diff --git a/src/mod/codecs/mod_iSAC/.svn/all-wcprops b/src/mod/codecs/mod_iSAC/.svn/all-wcprops new file mode 100644 index 0000000000..1c00e9faa9 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/all-wcprops @@ -0,0 +1,305 @@ +K 25 +svn:wc:ra_dav:version-url +V 73 +/svn/!svn/ver/1323/trunk/src/modules/audio_coding/codecs/iSAC/main/source +END +pitch_estimator.c +K 25 +svn:wc:ra_dav:version-url +V 90 +/svn/!svn/ver/270/trunk/src/modules/audio_coding/codecs/iSAC/main/source/pitch_estimator.c +END +spectrum_ar_model_tables.c +K 25 +svn:wc:ra_dav:version-url +V 99 +/svn/!svn/ver/156/trunk/src/modules/audio_coding/codecs/iSAC/main/source/spectrum_ar_model_tables.c +END +pitch_estimator.h +K 25 +svn:wc:ra_dav:version-url +V 90 +/svn/!svn/ver/156/trunk/src/modules/audio_coding/codecs/iSAC/main/source/pitch_estimator.h +END +spectrum_ar_model_tables.h +K 25 +svn:wc:ra_dav:version-url +V 99 +/svn/!svn/ver/156/trunk/src/modules/audio_coding/codecs/iSAC/main/source/spectrum_ar_model_tables.h +END +filterbanks.c +K 25 +svn:wc:ra_dav:version-url +V 87 +/svn/!svn/ver/1073/trunk/src/modules/audio_coding/codecs/iSAC/main/source/filterbanks.c +END +crc.c +K 25 +svn:wc:ra_dav:version-url +V 79 +/svn/!svn/ver/1073/trunk/src/modules/audio_coding/codecs/iSAC/main/source/crc.c +END +filterbank_tables.c +K 25 +svn:wc:ra_dav:version-url +V 93 +/svn/!svn/ver/1073/trunk/src/modules/audio_coding/codecs/iSAC/main/source/filterbank_tables.c +END +structs.h +K 25 +svn:wc:ra_dav:version-url +V 82 +/svn/!svn/ver/156/trunk/src/modules/audio_coding/codecs/iSAC/main/source/structs.h +END +crc.h +K 25 +svn:wc:ra_dav:version-url +V 78 +/svn/!svn/ver/156/trunk/src/modules/audio_coding/codecs/iSAC/main/source/crc.h +END +fft.c +K 25 +svn:wc:ra_dav:version-url +V 78 +/svn/!svn/ver/156/trunk/src/modules/audio_coding/codecs/iSAC/main/source/fft.c +END +arith_routines_logist.c +K 25 +svn:wc:ra_dav:version-url +V 96 +/svn/!svn/ver/156/trunk/src/modules/audio_coding/codecs/iSAC/main/source/arith_routines_logist.c +END +filterbank_tables.h +K 25 +svn:wc:ra_dav:version-url +V 93 +/svn/!svn/ver/1073/trunk/src/modules/audio_coding/codecs/iSAC/main/source/filterbank_tables.h +END +lpc_gain_swb_tables.c +K 25 +svn:wc:ra_dav:version-url +V 94 +/svn/!svn/ver/156/trunk/src/modules/audio_coding/codecs/iSAC/main/source/lpc_gain_swb_tables.c +END +codec.h +K 25 +svn:wc:ra_dav:version-url +V 80 +/svn/!svn/ver/156/trunk/src/modules/audio_coding/codecs/iSAC/main/source/codec.h +END +decode.c +K 25 +svn:wc:ra_dav:version-url +V 81 +/svn/!svn/ver/156/trunk/src/modules/audio_coding/codecs/iSAC/main/source/decode.c +END +pitch_lag_tables.c +K 25 +svn:wc:ra_dav:version-url +V 91 +/svn/!svn/ver/156/trunk/src/modules/audio_coding/codecs/iSAC/main/source/pitch_lag_tables.c +END +fft.h +K 25 +svn:wc:ra_dav:version-url +V 78 +/svn/!svn/ver/156/trunk/src/modules/audio_coding/codecs/iSAC/main/source/fft.h +END +lpc_gain_swb_tables.h +K 25 +svn:wc:ra_dav:version-url +V 94 +/svn/!svn/ver/156/trunk/src/modules/audio_coding/codecs/iSAC/main/source/lpc_gain_swb_tables.h +END +arith_routines_hist.c +K 25 +svn:wc:ra_dav:version-url +V 94 +/svn/!svn/ver/156/trunk/src/modules/audio_coding/codecs/iSAC/main/source/arith_routines_hist.c +END +os_specific_inline.h +K 25 +svn:wc:ra_dav:version-url +V 94 +/svn/!svn/ver/1323/trunk/src/modules/audio_coding/codecs/iSAC/main/source/os_specific_inline.h +END +pitch_lag_tables.h +K 25 +svn:wc:ra_dav:version-url +V 91 +/svn/!svn/ver/156/trunk/src/modules/audio_coding/codecs/iSAC/main/source/pitch_lag_tables.h +END +bandwidth_estimator.c +K 25 +svn:wc:ra_dav:version-url +V 95 +/svn/!svn/ver/1073/trunk/src/modules/audio_coding/codecs/iSAC/main/source/bandwidth_estimator.c +END +pitch_gain_tables.c +K 25 +svn:wc:ra_dav:version-url +V 92 +/svn/!svn/ver/156/trunk/src/modules/audio_coding/codecs/iSAC/main/source/pitch_gain_tables.c +END +arith_routines.c +K 25 +svn:wc:ra_dav:version-url +V 89 +/svn/!svn/ver/156/trunk/src/modules/audio_coding/codecs/iSAC/main/source/arith_routines.c +END +bandwidth_estimator.h +K 25 +svn:wc:ra_dav:version-url +V 95 +/svn/!svn/ver/1073/trunk/src/modules/audio_coding/codecs/iSAC/main/source/bandwidth_estimator.h +END +pitch_gain_tables.h +K 25 +svn:wc:ra_dav:version-url +V 92 +/svn/!svn/ver/156/trunk/src/modules/audio_coding/codecs/iSAC/main/source/pitch_gain_tables.h +END +arith_routines.h +K 25 +svn:wc:ra_dav:version-url +V 89 +/svn/!svn/ver/156/trunk/src/modules/audio_coding/codecs/iSAC/main/source/arith_routines.h +END +settings.h +K 25 +svn:wc:ra_dav:version-url +V 83 +/svn/!svn/ver/156/trunk/src/modules/audio_coding/codecs/iSAC/main/source/settings.h +END +isac.gypi +K 25 +svn:wc:ra_dav:version-url +V 83 +/svn/!svn/ver/1323/trunk/src/modules/audio_coding/codecs/iSAC/main/source/isac.gypi +END +Android.mk +K 25 +svn:wc:ra_dav:version-url +V 83 +/svn/!svn/ver/959/trunk/src/modules/audio_coding/codecs/iSAC/main/source/Android.mk +END +lpc_shape_swb12_tables.c +K 25 +svn:wc:ra_dav:version-url +V 97 +/svn/!svn/ver/156/trunk/src/modules/audio_coding/codecs/iSAC/main/source/lpc_shape_swb12_tables.c +END +encode_lpc_swb.c +K 25 +svn:wc:ra_dav:version-url +V 90 +/svn/!svn/ver/1286/trunk/src/modules/audio_coding/codecs/iSAC/main/source/encode_lpc_swb.c +END +lpc_tables.c +K 25 +svn:wc:ra_dav:version-url +V 85 +/svn/!svn/ver/156/trunk/src/modules/audio_coding/codecs/iSAC/main/source/lpc_tables.c +END +lpc_shape_swb16_tables.c +K 25 +svn:wc:ra_dav:version-url +V 98 +/svn/!svn/ver/1286/trunk/src/modules/audio_coding/codecs/iSAC/main/source/lpc_shape_swb16_tables.c +END +transform.c +K 25 +svn:wc:ra_dav:version-url +V 85 +/svn/!svn/ver/1323/trunk/src/modules/audio_coding/codecs/iSAC/main/source/transform.c +END +lpc_shape_swb12_tables.h +K 25 +svn:wc:ra_dav:version-url +V 97 +/svn/!svn/ver/156/trunk/src/modules/audio_coding/codecs/iSAC/main/source/lpc_shape_swb12_tables.h +END +encode_lpc_swb.h +K 25 +svn:wc:ra_dav:version-url +V 89 +/svn/!svn/ver/156/trunk/src/modules/audio_coding/codecs/iSAC/main/source/encode_lpc_swb.h +END +pitch_filter.c +K 25 +svn:wc:ra_dav:version-url +V 88 +/svn/!svn/ver/1323/trunk/src/modules/audio_coding/codecs/iSAC/main/source/pitch_filter.c +END +filter_functions.c +K 25 +svn:wc:ra_dav:version-url +V 91 +/svn/!svn/ver/270/trunk/src/modules/audio_coding/codecs/iSAC/main/source/filter_functions.c +END +lpc_tables.h +K 25 +svn:wc:ra_dav:version-url +V 85 +/svn/!svn/ver/156/trunk/src/modules/audio_coding/codecs/iSAC/main/source/lpc_tables.h +END +isac.c +K 25 +svn:wc:ra_dav:version-url +V 80 +/svn/!svn/ver/1323/trunk/src/modules/audio_coding/codecs/iSAC/main/source/isac.c +END +lpc_shape_swb16_tables.h +K 25 +svn:wc:ra_dav:version-url +V 98 +/svn/!svn/ver/1286/trunk/src/modules/audio_coding/codecs/iSAC/main/source/lpc_shape_swb16_tables.h +END +decode_bwe.c +K 25 +svn:wc:ra_dav:version-url +V 85 +/svn/!svn/ver/156/trunk/src/modules/audio_coding/codecs/iSAC/main/source/decode_bwe.c +END +lpc_analysis.c +K 25 +svn:wc:ra_dav:version-url +V 88 +/svn/!svn/ver/1073/trunk/src/modules/audio_coding/codecs/iSAC/main/source/lpc_analysis.c +END +entropy_coding.c +K 25 +svn:wc:ra_dav:version-url +V 90 +/svn/!svn/ver/1323/trunk/src/modules/audio_coding/codecs/iSAC/main/source/entropy_coding.c +END +lattice.c +K 25 +svn:wc:ra_dav:version-url +V 82 +/svn/!svn/ver/270/trunk/src/modules/audio_coding/codecs/iSAC/main/source/lattice.c +END +lpc_analysis.h +K 25 +svn:wc:ra_dav:version-url +V 88 +/svn/!svn/ver/1073/trunk/src/modules/audio_coding/codecs/iSAC/main/source/lpc_analysis.h +END +intialize.c +K 25 +svn:wc:ra_dav:version-url +V 84 +/svn/!svn/ver/156/trunk/src/modules/audio_coding/codecs/iSAC/main/source/intialize.c +END +entropy_coding.h +K 25 +svn:wc:ra_dav:version-url +V 89 +/svn/!svn/ver/156/trunk/src/modules/audio_coding/codecs/iSAC/main/source/entropy_coding.h +END +encode.c +K 25 +svn:wc:ra_dav:version-url +V 82 +/svn/!svn/ver/1073/trunk/src/modules/audio_coding/codecs/iSAC/main/source/encode.c +END diff --git a/src/mod/codecs/mod_iSAC/.svn/entries b/src/mod/codecs/mod_iSAC/.svn/entries new file mode 100644 index 0000000000..c92d06f933 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/entries @@ -0,0 +1,1728 @@ +10 + +dir +1500 +http://webrtc.googlecode.com/svn/trunk/src/modules/audio_coding/codecs/iSAC/main/source +http://webrtc.googlecode.com/svn + + + +2012-01-04T02:26:23.585138Z +1323 +turaj@webrtc.org + + + + + + + + + + + + + + +4adac7df-926f-26a2-2b94-8c16560cd09d + +pitch_estimator.c +file + + + + +2012-01-20T20:29:53.285255Z +ffc93b28d883b9c22b5b3c296d3158ea +2011-07-28T20:39:08.076378Z +270 +leozwang@google.com +has-props + + + + + + + + + + + + + + + + + + + + +22625 + +spectrum_ar_model_tables.c +file + + + + +2012-01-20T20:29:53.285255Z +fd9e6d371ff35900f6d71d8938321105 +2011-05-30T11:22:19.537914Z +4 +niklase@google.com +has-props + + + + + + + + + + + + + + + + + + + + +7222 + +pitch_estimator.h +file + + + + +2012-01-20T20:29:53.285255Z +c5b7b3a2fb40fb23e5b2d3c2f58b6876 +2011-05-30T11:22:19.537914Z +4 +niklase@google.com +has-props + + + + + + + + + + + + + + + + + + + + +2928 + +spectrum_ar_model_tables.h +file + + + + +2012-01-20T20:29:53.285255Z +c703694f696b8f664e1fb42fe06e8635 +2011-05-30T11:22:19.537914Z +4 +niklase@google.com +has-props + + + + + + + + + + + + + + + + + + + + +2811 + +filterbanks.c +file + + + + +2012-01-20T20:29:53.285255Z +411f0a3374d29e7f02dc66289618cf5d +2011-12-01T13:01:39.108470Z +1073 +tina.legrand@webrtc.org +has-props + + + + + + + + + + + + + + + + + + + + +15093 + +crc.c +file + + + + +2012-01-20T20:29:53.285255Z +db82f8ed8c2988208823b0fb0ffbb97f +2011-12-01T13:01:39.108470Z +1073 +tina.legrand@webrtc.org +has-props + + + + + + + + + + + + + + + + + + + + +4989 + +filterbank_tables.c +file + + + + +2012-01-20T20:29:53.285255Z +dc9e18e27d4547bc8f63a8f4074af9d8 +2011-12-01T13:01:39.108470Z +1073 +tina.legrand@webrtc.org +has-props + + + + + + + + + + + + + + + + + + + + +1616 + +structs.h +file + + + + +2012-01-20T20:29:53.285255Z +5040de4ef4b58958f2f35442a62ea554 +2011-05-30T11:22:19.537914Z +4 +niklase@google.com +has-props + + + + + + + + + + + + + + + + + + + + +13197 + +crc.h +file + + + + +2012-01-20T20:29:53.288588Z +d2caa50938a0fc7442e7cf49bda3a649 +2011-05-30T11:22:19.537914Z +4 +niklase@google.com +has-props + + + + + + + + + + + + + + + + + + + + +1226 + +fft.c +file + + + + +2012-01-20T20:29:53.288588Z +86bfb3198c6fccb37ed85f5f7134bf99 +2011-05-30T14:47:49.605490Z +16 +tlegrand@google.com +has-props + + + + + + + + + + + + + + + + + + + + +26370 + +arith_routines_logist.c +file + + + + +2012-01-20T20:29:53.288588Z +59ad1f22ef948167b66a79732633ec5a +2011-05-30T11:22:19.537914Z +4 +niklase@google.com +has-props + + + + + + + + + + + + + + + + + + + + +8912 + +filterbank_tables.h +file + + + + +2012-01-20T20:29:53.288588Z +74cdc5f1738d125a229c5e376530a820 +2011-12-01T13:01:39.108470Z +1073 +tina.legrand@webrtc.org +has-props + + + + + + + + + + + + + + + + + + + + +1653 + +lpc_gain_swb_tables.c +file + + + + +2012-01-20T20:29:53.288588Z +f3f5972c375c54ca1e886badd759d927 +2011-05-30T11:22:19.537914Z +4 +niklase@google.com +has-props + + + + + + + + + + + + + + + + + + + + +5158 + +codec.h +file + + + + +2012-01-20T20:29:53.288588Z +5ae9772deb8bceda582cb96aac3691a4 +2011-05-30T11:22:19.537914Z +4 +niklase@google.com +has-props + + + + + + + + + + + + + + + + + + + + +10070 + +decode.c +file + + + + +2012-01-20T20:29:53.288588Z +d43139a40fb4ed147ea800cdc70981c5 +2011-05-30T11:22:19.537914Z +4 +niklase@google.com +has-props + + + + + + + + + + + + + + + + + + + + +10380 + +pitch_lag_tables.c +file + + + + +2012-01-20T20:29:53.291921Z +a80e58b9d7b9533fb8067a5ecd495b2e +2011-05-30T11:22:19.537914Z +4 +niklase@google.com +has-props + + + + + + + + + + + + + + + + + + + + +15171 + +fft.h +file + + + + +2012-01-20T20:29:53.291921Z +2ef6ceb862c1f0c074f41862cac46e60 +2011-05-30T11:22:19.537914Z +4 +niklase@google.com +has-props + + + + + + + + + + + + + + + + + + + + +1680 + +lpc_gain_swb_tables.h +file + + + + +2012-01-20T20:29:53.291921Z +8275a8e40d9446571838f3ed9881305d +2011-05-30T11:22:19.537914Z +4 +niklase@google.com +has-props + + + + + + + + + + + + + + + + + + + + +1598 + +arith_routines_hist.c +file + + + + +2012-01-20T20:29:53.291921Z +35cec930bc1c98b232062f0f535396a5 +2011-05-30T11:22:19.537914Z +4 +niklase@google.com +has-props + + + + + + + + + + + + + + + + + + + + +8805 + +os_specific_inline.h +file + + + + +2012-01-20T20:29:53.291921Z +7d5226009f1e8964d071367276aad570 +2012-01-04T02:26:23.585138Z +1323 +turaj@webrtc.org + + + + + + + + + + + + + + + + + + + + + +1242 + +pitch_lag_tables.h +file + + + + +2012-01-20T20:29:53.291921Z +3dbbc40fdd01918d218a781f6a914b67 +2011-05-30T11:22:19.537914Z +4 +niklase@google.com +has-props + + + + + + + + + + + + + + + + + + + + +4118 + +bandwidth_estimator.c +file + + + + +2012-01-20T20:29:53.291921Z +c63cf515fd72171ef92264b8a5969880 +2011-12-01T13:01:39.108470Z +1073 +tina.legrand@webrtc.org +has-props + + + + + + + + + + + + + + + + + + + + +29875 + +pitch_gain_tables.c +file + + + + +2012-01-20T20:29:53.295255Z +a3339faa8e553ebc1dfb27a21ea9d66e +2011-05-30T11:22:19.537914Z +4 +niklase@google.com +has-props + + + + + + + + + + + + + + + + + + + + +8310 + +arith_routines.c +file + + + + +2012-01-20T20:29:53.291921Z +acb216fd9a5c6f7115124481cf01c3c3 +2011-05-30T11:22:19.537914Z +4 +niklase@google.com +has-props + + + + + + + + + + + + + + + + + + + + +1924 + +bandwidth_estimator.h +file + + + + +2012-01-20T20:29:53.295255Z +665e910bfe196428815b247f0112d8ec +2011-12-01T13:01:39.108470Z +1073 +tina.legrand@webrtc.org +has-props + + + + + + + + + + + + + + + + + + + + +6609 + +pitch_gain_tables.h +file + + + + +2012-01-20T20:29:53.295255Z +3878bb14fc8f4fc11e60653227c640d8 +2011-05-30T11:22:19.537914Z +4 +niklase@google.com +has-props + + + + + + + + + + + + + + + + + + + + +1676 + +arith_routines.h +file + + + + +2012-01-20T20:29:53.295255Z +7f9cf046bc3e3fc4169833b26cdd4e67 +2011-05-30T11:22:19.537914Z +4 +niklase@google.com +has-props + + + + + + + + + + + + + + + + + + + + +2992 + +settings.h +file + + + + +2012-01-20T20:29:53.295255Z +19c4e46acc69d2844d41bf9097a32d65 +2011-05-30T11:22:19.537914Z +4 +niklase@google.com +has-props + + + + + + + + + + + + + + + + + + + + +8528 + +isac.gypi +file + + + + +2012-01-20T20:29:53.295255Z +82997ffe48dc63007cbb1a0d7fe605f2 +2012-01-04T02:26:23.585138Z +1323 +turaj@webrtc.org +has-props + + + + + + + + + + + + + + + + + + + + +2381 + +Android.mk +file + + + + +2012-01-20T20:29:53.295255Z +9e7bf53efda587ab432c7a881bb8a090 +2011-11-17T08:35:47.037640Z +959 +kjellander@webrtc.org + + + + + + + + + + + + + + + + + + + + + +1697 + +encode_lpc_swb.c +file + + + + +2012-01-20T20:29:53.295255Z +a1aaf34b47a572f484e2f609fdedbf82 +2011-12-22T12:19:43.440027Z +1286 +pwestin@webrtc.org +has-props + + + + + + + + + + + + + + + + + + + + +17969 + +lpc_shape_swb12_tables.c +file + + + + +2012-01-20T20:29:53.295255Z +a7659aeeaa20194f3873e95b40fec68e +2011-05-30T11:22:19.537914Z +4 +niklase@google.com +has-props + + + + + + + + + + + + + + + + + + + + +5172 + +lpc_tables.c +file + + + + +2012-01-20T20:29:53.298588Z +f8be8c6e4e141c54a1ee2c99ed0dfadf +2011-05-30T11:22:19.537914Z +4 +niklase@google.com +has-props + + + + + + + + + + + + + + + + + + + + +114055 + +lpc_shape_swb16_tables.c +file + + + + +2012-01-20T20:29:53.298588Z +035078eed18395e9317aa6ae3e25d039 +2011-12-22T12:19:43.440027Z +1286 +pwestin@webrtc.org +has-props + + + + + + + + + + + + + + + + + + + + +8371 + +transform.c +file + + + + +2012-01-20T20:29:53.298588Z +f90a119f4fa995c341830210c55158b6 +2012-01-04T02:26:23.585138Z +1323 +turaj@webrtc.org +has-props + + + + + + + + + + + + + + + + + + + + +4030 + +lpc_shape_swb12_tables.h +file + + + + +2012-01-20T20:29:53.298588Z +b0522b0b537ed028f2f9c90a1e592575 +2011-05-30T11:22:19.537914Z +4 +niklase@google.com +has-props + + + + + + + + + + + + + + + + + + + + +2160 + +encode_lpc_swb.h +file + + + + +2012-01-20T20:29:53.301921Z +9d2cd2f6fb25dd0662e00e5bdbd9fe55 +2011-05-30T11:22:19.537914Z +4 +niklase@google.com +has-props + + + + + + + + + + + + + + + + + + + + +8529 + +pitch_filter.c +file + + + + +2012-01-20T20:29:53.301921Z +914d596951117c79a910daa7651ad1ea +2012-01-04T02:26:23.585138Z +1323 +turaj@webrtc.org +has-props + + + + + + + + + + + + + + + + + + + + +14875 + +filter_functions.c +file + + + + +2012-01-20T20:29:53.301921Z +914f948d354850b56840f060b45513eb +2011-07-28T20:39:08.076378Z +270 +leozwang@google.com +has-props + + + + + + + + + + + + + + + + + + + + +7619 + +lpc_tables.h +file + + + + +2012-01-20T20:29:53.301921Z +0dcd179945d39ec83402ed87c8ee704c +2011-05-30T11:22:19.537914Z +4 +niklase@google.com +has-props + + + + + + + + + + + + + + + + + + + + +3852 + +isac.c +file + + + + +2012-01-20T20:29:53.305255Z +4f345a79fc15a72c1e5dac7ab1647b31 +2012-01-04T02:26:23.585138Z +1323 +turaj@webrtc.org +has-props + + + + + + + + + + + + + + + + + + + + +81167 + +lpc_shape_swb16_tables.h +file + + + + +2012-01-20T20:29:53.305255Z +7c8bfd79c94feef8860e58d5f4da17fb +2011-12-22T12:19:43.440027Z +1286 +pwestin@webrtc.org +has-props + + + + + + + + + + + + + + + + + + + + +2672 + +decode_bwe.c +file + + + + +2012-01-20T20:29:53.305255Z +8f867b1e2a37886f1c8e8680c5b1970c +2011-05-30T11:22:19.537914Z +4 +niklase@google.com +has-props + + + + + + + + + + + + + + + + + + + + +2941 + +lpc_analysis.c +file + + + + +2012-01-20T20:29:53.305255Z +c9fb33ce29602266dc2c7d83016ccb5d +2011-12-01T13:01:39.108470Z +1073 +tina.legrand@webrtc.org +has-props + + + + + + + + + + + + + + + + + + + + +18147 + +entropy_coding.c +file + + + + +2012-01-20T20:29:53.305255Z +975d56650c9f3acba6f9fcf1236c68a1 +2012-01-04T02:26:23.585138Z +1323 +turaj@webrtc.org +has-props + + + + + + + + + + + + + + + + + + + + +79374 + +lattice.c +file + + + + +2012-01-20T20:29:53.308588Z +f03fb0857e654e33e57ab533a450a17d +2011-07-28T20:39:08.076378Z +270 +leozwang@google.com +has-props + + + + + + + + + + + + + + + + + + + + +5857 + +lpc_analysis.h +file + + + + +2012-01-20T20:29:53.308588Z +38bb7eeb78034b95c3d8a0bbe523c174 +2011-12-01T13:01:39.108470Z +1073 +tina.legrand@webrtc.org +has-props + + + + + + + + + + + + + + + + + + + + +1641 + +intialize.c +file + + + + +2012-01-20T20:29:53.308588Z +b418d320bfc05ee6db41ec550a961d6b +2011-05-30T11:22:19.537914Z +4 +niklase@google.com +has-props + + + + + + + + + + + + + + + + + + + + +4405 + +entropy_coding.h +file + + + + +2012-01-20T20:29:53.308588Z +c31837b13a97f74c66c279b2a672844b +2011-05-30T11:22:19.537914Z +4 +niklase@google.com +has-props + + + + + + + + + + + + + + + + + + + + +16088 + +encode.c +file + + + + +2012-01-20T20:29:53.308588Z +be62dce370af5d23c51d9b16404caf19 +2011-12-01T13:01:39.108470Z +1073 +tina.legrand@webrtc.org +has-props + + + + + + + + + + + + + + + + + + + + +52040 + diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/arith_routines.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/arith_routines.c.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/arith_routines.c.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/arith_routines.h.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/arith_routines.h.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/arith_routines.h.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/arith_routines_hist.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/arith_routines_hist.c.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/arith_routines_hist.c.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/arith_routines_logist.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/arith_routines_logist.c.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/arith_routines_logist.c.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/bandwidth_estimator.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/bandwidth_estimator.c.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/bandwidth_estimator.c.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/bandwidth_estimator.h.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/bandwidth_estimator.h.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/bandwidth_estimator.h.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/codec.h.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/codec.h.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/codec.h.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/crc.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/crc.c.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/crc.c.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/crc.h.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/crc.h.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/crc.h.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/decode.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/decode.c.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/decode.c.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/decode_bwe.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/decode_bwe.c.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/decode_bwe.c.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/encode.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/encode.c.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/encode.c.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/encode_lpc_swb.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/encode_lpc_swb.c.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/encode_lpc_swb.c.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/encode_lpc_swb.h.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/encode_lpc_swb.h.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/encode_lpc_swb.h.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/entropy_coding.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/entropy_coding.c.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/entropy_coding.c.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/entropy_coding.h.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/entropy_coding.h.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/entropy_coding.h.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/fft.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/fft.c.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/fft.c.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/fft.h.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/fft.h.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/fft.h.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/filter_functions.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/filter_functions.c.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/filter_functions.c.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/filterbank_tables.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/filterbank_tables.c.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/filterbank_tables.c.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/filterbank_tables.h.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/filterbank_tables.h.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/filterbank_tables.h.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/filterbanks.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/filterbanks.c.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/filterbanks.c.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/intialize.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/intialize.c.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/intialize.c.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/isac.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/isac.c.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/isac.c.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/isac.gypi.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/isac.gypi.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/isac.gypi.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/lattice.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/lattice.c.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/lattice.c.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/lpc_analysis.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/lpc_analysis.c.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/lpc_analysis.c.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/lpc_analysis.h.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/lpc_analysis.h.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/lpc_analysis.h.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/lpc_gain_swb_tables.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/lpc_gain_swb_tables.c.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/lpc_gain_swb_tables.c.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/lpc_gain_swb_tables.h.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/lpc_gain_swb_tables.h.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/lpc_gain_swb_tables.h.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/lpc_shape_swb12_tables.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/lpc_shape_swb12_tables.c.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/lpc_shape_swb12_tables.c.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/lpc_shape_swb12_tables.h.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/lpc_shape_swb12_tables.h.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/lpc_shape_swb12_tables.h.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/lpc_shape_swb16_tables.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/lpc_shape_swb16_tables.c.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/lpc_shape_swb16_tables.c.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/lpc_shape_swb16_tables.h.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/lpc_shape_swb16_tables.h.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/lpc_shape_swb16_tables.h.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/lpc_tables.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/lpc_tables.c.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/lpc_tables.c.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/lpc_tables.h.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/lpc_tables.h.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/lpc_tables.h.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/pitch_estimator.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/pitch_estimator.c.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/pitch_estimator.c.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/pitch_estimator.h.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/pitch_estimator.h.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/pitch_estimator.h.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/pitch_filter.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/pitch_filter.c.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/pitch_filter.c.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/pitch_gain_tables.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/pitch_gain_tables.c.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/pitch_gain_tables.c.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/pitch_gain_tables.h.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/pitch_gain_tables.h.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/pitch_gain_tables.h.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/pitch_lag_tables.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/pitch_lag_tables.c.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/pitch_lag_tables.c.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/pitch_lag_tables.h.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/pitch_lag_tables.h.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/pitch_lag_tables.h.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/settings.h.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/settings.h.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/settings.h.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/spectrum_ar_model_tables.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/spectrum_ar_model_tables.c.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/spectrum_ar_model_tables.c.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/spectrum_ar_model_tables.h.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/spectrum_ar_model_tables.h.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/spectrum_ar_model_tables.h.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/structs.h.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/structs.h.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/structs.h.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/prop-base/transform.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/prop-base/transform.c.svn-base new file mode 100644 index 0000000000..abd5821e1a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/prop-base/transform.c.svn-base @@ -0,0 +1,5 @@ +K 13 +svn:eol-style +V 2 +LF +END diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/Android.mk.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/Android.mk.svn-base new file mode 100644 index 0000000000..07b2a314b5 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/Android.mk.svn-base @@ -0,0 +1,66 @@ +# Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. +# +# Use of this source code is governed by a BSD-style license +# that can be found in the LICENSE file in the root of the source +# tree. An additional intellectual property rights grant can be found +# in the file PATENTS. All contributing project authors may +# be found in the AUTHORS file in the root of the source tree. + +LOCAL_PATH := $(call my-dir) + +include $(CLEAR_VARS) + +include $(LOCAL_PATH)/../../../../../../../android-webrtc.mk + +LOCAL_ARM_MODE := arm +LOCAL_MODULE_CLASS := STATIC_LIBRARIES +LOCAL_MODULE := libwebrtc_isac +LOCAL_MODULE_TAGS := optional +LOCAL_SRC_FILES := \ + arith_routines.c \ + arith_routines_hist.c \ + arith_routines_logist.c \ + bandwidth_estimator.c \ + crc.c \ + decode.c \ + decode_bwe.c \ + encode.c \ + encode_lpc_swb.c \ + entropy_coding.c \ + fft.c \ + filter_functions.c \ + filterbank_tables.c \ + intialize.c \ + isac.c \ + filterbanks.c \ + pitch_lag_tables.c \ + lattice.c \ + lpc_gain_swb_tables.c \ + lpc_analysis.c \ + lpc_shape_swb12_tables.c \ + lpc_shape_swb16_tables.c \ + lpc_tables.c \ + pitch_estimator.c \ + pitch_filter.c \ + pitch_gain_tables.c \ + spectrum_ar_model_tables.c \ + transform.c + +# Flags passed to both C and C++ files. +LOCAL_CFLAGS := \ + $(MY_WEBRTC_COMMON_DEFS) + +LOCAL_C_INCLUDES := \ + $(LOCAL_PATH)/../interface \ + $(LOCAL_PATH)/../../../../../.. \ + $(LOCAL_PATH)/../../../../../../common_audio/signal_processing/include + +LOCAL_SHARED_LIBRARIES := \ + libcutils \ + libdl \ + libstlport + +ifndef NDK_ROOT +include external/stlport/libstlport.mk +endif +include $(BUILD_STATIC_LIBRARY) diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/arith_routines.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/arith_routines.c.svn-base new file mode 100644 index 0000000000..31c441a7af --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/arith_routines.c.svn-base @@ -0,0 +1,60 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#include "arith_routines.h" +#include "settings.h" + + +/* + * terminate and return byte stream; + * returns the number of bytes in the stream + */ +int WebRtcIsac_EncTerminate(Bitstr *streamdata) /* in-/output struct containing bitstream */ +{ + WebRtc_UWord8 *stream_ptr; + + + /* point to the right place in the stream buffer */ + stream_ptr = streamdata->stream + streamdata->stream_index; + + /* find minimum length (determined by current interval width) */ + if ( streamdata->W_upper > 0x01FFFFFF ) + { + streamdata->streamval += 0x01000000; + /* add carry to buffer */ + if (streamdata->streamval < 0x01000000) + { + /* propagate carry */ + while ( !(++(*--stream_ptr)) ); + /* put pointer back to the old value */ + stream_ptr = streamdata->stream + streamdata->stream_index; + } + /* write remaining data to bitstream */ + *stream_ptr++ = (WebRtc_UWord8) (streamdata->streamval >> 24); + } + else + { + streamdata->streamval += 0x00010000; + /* add carry to buffer */ + if (streamdata->streamval < 0x00010000) + { + /* propagate carry */ + while ( !(++(*--stream_ptr)) ); + /* put pointer back to the old value */ + stream_ptr = streamdata->stream + streamdata->stream_index; + } + /* write remaining data to bitstream */ + *stream_ptr++ = (WebRtc_UWord8) (streamdata->streamval >> 24); + *stream_ptr++ = (WebRtc_UWord8) ((streamdata->streamval >> 16) & 0x00FF); + } + + /* calculate stream length */ + return (int)(stream_ptr - streamdata->stream); +} diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/arith_routines.h.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/arith_routines.h.svn-base new file mode 100644 index 0000000000..8e5f496f98 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/arith_routines.h.svn-base @@ -0,0 +1,63 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * arith_routines.h + * + * Functions for arithmetic coding. + * + */ + +#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_ARITH_ROUTINES_H_ +#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_ARITH_ROUTINES_H_ + +#include "structs.h" + + +int WebRtcIsac_EncLogisticMulti2( + Bitstr *streamdata, /* in-/output struct containing bitstream */ + WebRtc_Word16 *dataQ7, /* input: data vector */ + const WebRtc_UWord16 *env, /* input: side info vector defining the width of the pdf */ + const int N, /* input: data vector length */ + const WebRtc_Word16 isSWB12kHz); /* if the codec is working in 12kHz bandwidth */ + +/* returns the number of bytes in the stream */ +int WebRtcIsac_EncTerminate(Bitstr *streamdata); /* in-/output struct containing bitstream */ + +/* returns the number of bytes in the stream so far */ +int WebRtcIsac_DecLogisticMulti2( + WebRtc_Word16 *data, /* output: data vector */ + Bitstr *streamdata, /* in-/output struct containing bitstream */ + const WebRtc_UWord16 *env, /* input: side info vector defining the width of the pdf */ + const WebRtc_Word16 *dither, /* input: dither vector */ + const int N, /* input: data vector length */ + const WebRtc_Word16 isSWB12kHz); /* if the codec is working in 12kHz bandwidth */ + +void WebRtcIsac_EncHistMulti( + Bitstr *streamdata, /* in-/output struct containing bitstream */ + const int *data, /* input: data vector */ + const WebRtc_UWord16 **cdf, /* input: array of cdf arrays */ + const int N); /* input: data vector length */ + +int WebRtcIsac_DecHistBisectMulti( + int *data, /* output: data vector */ + Bitstr *streamdata, /* in-/output struct containing bitstream */ + const WebRtc_UWord16 **cdf, /* input: array of cdf arrays */ + const WebRtc_UWord16 *cdf_size, /* input: array of cdf table sizes+1 (power of two: 2^k) */ + const int N); /* input: data vector length */ + +int WebRtcIsac_DecHistOneStepMulti( + int *data, /* output: data vector */ + Bitstr *streamdata, /* in-/output struct containing bitstream */ + const WebRtc_UWord16 **cdf, /* input: array of cdf arrays */ + const WebRtc_UWord16 *init_index,/* input: vector of initial cdf table search entries */ + const int N); /* input: data vector length */ + +#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_ARITH_ROUTINES_H_ */ diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/arith_routines_hist.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/arith_routines_hist.c.svn-base new file mode 100644 index 0000000000..f4a13d6078 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/arith_routines_hist.c.svn-base @@ -0,0 +1,291 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#include "settings.h" +#include "arith_routines.h" + + +/* + * code symbols into arithmetic bytestream + */ +void WebRtcIsac_EncHistMulti(Bitstr *streamdata, /* in-/output struct containing bitstream */ + const int *data, /* input: data vector */ + const WebRtc_UWord16 **cdf, /* input: array of cdf arrays */ + const int N) /* input: data vector length */ +{ + WebRtc_UWord32 W_lower, W_upper; + WebRtc_UWord32 W_upper_LSB, W_upper_MSB; + WebRtc_UWord8 *stream_ptr; + WebRtc_UWord8 *stream_ptr_carry; + WebRtc_UWord32 cdf_lo, cdf_hi; + int k; + + + /* point to beginning of stream buffer */ + stream_ptr = streamdata->stream + streamdata->stream_index; + W_upper = streamdata->W_upper; + + for (k=N; k>0; k--) + { + /* fetch cdf_lower and cdf_upper from cdf tables */ + cdf_lo = (WebRtc_UWord32) *(*cdf + *data); + cdf_hi = (WebRtc_UWord32) *(*cdf++ + *data++ + 1); + + /* update interval */ + W_upper_LSB = W_upper & 0x0000FFFF; + W_upper_MSB = W_upper >> 16; + W_lower = W_upper_MSB * cdf_lo; + W_lower += (W_upper_LSB * cdf_lo) >> 16; + W_upper = W_upper_MSB * cdf_hi; + W_upper += (W_upper_LSB * cdf_hi) >> 16; + + /* shift interval such that it begins at zero */ + W_upper -= ++W_lower; + + /* add integer to bitstream */ + streamdata->streamval += W_lower; + + /* handle carry */ + if (streamdata->streamval < W_lower) + { + /* propagate carry */ + stream_ptr_carry = stream_ptr; + while (!(++(*--stream_ptr_carry))); + } + + /* renormalize interval, store most significant byte of streamval and update streamval */ + while ( !(W_upper & 0xFF000000) ) /* W_upper < 2^24 */ + { + W_upper <<= 8; + *stream_ptr++ = (WebRtc_UWord8) (streamdata->streamval >> 24); + streamdata->streamval <<= 8; + } + } + + /* calculate new stream_index */ + streamdata->stream_index = (int)(stream_ptr - streamdata->stream); + streamdata->W_upper = W_upper; + + return; +} + + + +/* + * function to decode more symbols from the arithmetic bytestream, using method of bisection + * cdf tables should be of size 2^k-1 (which corresponds to an alphabet size of 2^k-2) + */ +int WebRtcIsac_DecHistBisectMulti(int *data, /* output: data vector */ + Bitstr *streamdata, /* in-/output struct containing bitstream */ + const WebRtc_UWord16 **cdf, /* input: array of cdf arrays */ + const WebRtc_UWord16 *cdf_size, /* input: array of cdf table sizes+1 (power of two: 2^k) */ + const int N) /* input: data vector length */ +{ + WebRtc_UWord32 W_lower, W_upper; + WebRtc_UWord32 W_tmp; + WebRtc_UWord32 W_upper_LSB, W_upper_MSB; + WebRtc_UWord32 streamval; + const WebRtc_UWord8 *stream_ptr; + const WebRtc_UWord16 *cdf_ptr; + int size_tmp; + int k; + + W_lower = 0; //to remove warning -DH + stream_ptr = streamdata->stream + streamdata->stream_index; + W_upper = streamdata->W_upper; + if (W_upper == 0) + /* Should not be possible in normal operation */ + return -2; + + if (streamdata->stream_index == 0) /* first time decoder is called for this stream */ + { + /* read first word from bytestream */ + streamval = *stream_ptr << 24; + streamval |= *++stream_ptr << 16; + streamval |= *++stream_ptr << 8; + streamval |= *++stream_ptr; + } else { + streamval = streamdata->streamval; + } + + for (k=N; k>0; k--) + { + /* find the integer *data for which streamval lies in [W_lower+1, W_upper] */ + W_upper_LSB = W_upper & 0x0000FFFF; + W_upper_MSB = W_upper >> 16; + + /* start halfway the cdf range */ + size_tmp = *cdf_size++ >> 1; + cdf_ptr = *cdf + (size_tmp - 1); + + /* method of bisection */ + for ( ;; ) + { + W_tmp = W_upper_MSB * *cdf_ptr; + W_tmp += (W_upper_LSB * *cdf_ptr) >> 16; + size_tmp >>= 1; + if (size_tmp == 0) break; + if (streamval > W_tmp) + { + W_lower = W_tmp; + cdf_ptr += size_tmp; + } else { + W_upper = W_tmp; + cdf_ptr -= size_tmp; + } + } + if (streamval > W_tmp) + { + W_lower = W_tmp; + *data++ = (int)(cdf_ptr - *cdf++); + } else { + W_upper = W_tmp; + *data++ = (int)(cdf_ptr - *cdf++ - 1); + } + + /* shift interval to start at zero */ + W_upper -= ++W_lower; + + /* add integer to bitstream */ + streamval -= W_lower; + + /* renormalize interval and update streamval */ + while ( !(W_upper & 0xFF000000) ) /* W_upper < 2^24 */ + { + /* read next byte from stream */ + streamval = (streamval << 8) | *++stream_ptr; + W_upper <<= 8; + } + + if (W_upper == 0) + /* Should not be possible in normal operation */ + return -2; + + + } + + streamdata->stream_index = (int)(stream_ptr - streamdata->stream); + streamdata->W_upper = W_upper; + streamdata->streamval = streamval; + + + /* find number of bytes in original stream (determined by current interval width) */ + if ( W_upper > 0x01FFFFFF ) + return streamdata->stream_index - 2; + else + return streamdata->stream_index - 1; +} + + + +/* + * function to decode more symbols from the arithmetic bytestream, taking single step up or + * down at a time + * cdf tables can be of arbitrary size, but large tables may take a lot of iterations + */ +int WebRtcIsac_DecHistOneStepMulti(int *data, /* output: data vector */ + Bitstr *streamdata, /* in-/output struct containing bitstream */ + const WebRtc_UWord16 **cdf, /* input: array of cdf arrays */ + const WebRtc_UWord16 *init_index, /* input: vector of initial cdf table search entries */ + const int N) /* input: data vector length */ +{ + WebRtc_UWord32 W_lower, W_upper; + WebRtc_UWord32 W_tmp; + WebRtc_UWord32 W_upper_LSB, W_upper_MSB; + WebRtc_UWord32 streamval; + const WebRtc_UWord8 *stream_ptr; + const WebRtc_UWord16 *cdf_ptr; + int k; + + + stream_ptr = streamdata->stream + streamdata->stream_index; + W_upper = streamdata->W_upper; + if (W_upper == 0) + /* Should not be possible in normal operation */ + return -2; + + if (streamdata->stream_index == 0) /* first time decoder is called for this stream */ + { + /* read first word from bytestream */ + streamval = *stream_ptr << 24; + streamval |= *++stream_ptr << 16; + streamval |= *++stream_ptr << 8; + streamval |= *++stream_ptr; + } else { + streamval = streamdata->streamval; + } + + + for (k=N; k>0; k--) + { + /* find the integer *data for which streamval lies in [W_lower+1, W_upper] */ + W_upper_LSB = W_upper & 0x0000FFFF; + W_upper_MSB = W_upper >> 16; + + /* start at the specified table entry */ + cdf_ptr = *cdf + (*init_index++); + W_tmp = W_upper_MSB * *cdf_ptr; + W_tmp += (W_upper_LSB * *cdf_ptr) >> 16; + if (streamval > W_tmp) + { + for ( ;; ) + { + W_lower = W_tmp; + if (cdf_ptr[0]==65535) + /* range check */ + return -3; + W_tmp = W_upper_MSB * *++cdf_ptr; + W_tmp += (W_upper_LSB * *cdf_ptr) >> 16; + if (streamval <= W_tmp) break; + } + W_upper = W_tmp; + *data++ = (int)(cdf_ptr - *cdf++ - 1); + } else { + for ( ;; ) + { + W_upper = W_tmp; + --cdf_ptr; + if (cdf_ptr<*cdf) { + /* range check */ + return -3; + } + W_tmp = W_upper_MSB * *cdf_ptr; + W_tmp += (W_upper_LSB * *cdf_ptr) >> 16; + if (streamval > W_tmp) break; + } + W_lower = W_tmp; + *data++ = (int)(cdf_ptr - *cdf++); + } + + /* shift interval to start at zero */ + W_upper -= ++W_lower; + /* add integer to bitstream */ + streamval -= W_lower; + + /* renormalize interval and update streamval */ + while ( !(W_upper & 0xFF000000) ) /* W_upper < 2^24 */ + { + /* read next byte from stream */ + streamval = (streamval << 8) | *++stream_ptr; + W_upper <<= 8; + } + } + + streamdata->stream_index = (int)(stream_ptr - streamdata->stream); + streamdata->W_upper = W_upper; + streamdata->streamval = streamval; + + + /* find number of bytes in original stream (determined by current interval width) */ + if ( W_upper > 0x01FFFFFF ) + return streamdata->stream_index - 2; + else + return streamdata->stream_index - 1; +} diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/arith_routines_logist.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/arith_routines_logist.c.svn-base new file mode 100644 index 0000000000..422855a4ce --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/arith_routines_logist.c.svn-base @@ -0,0 +1,294 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * arith_routines.h + * + * This file contains functions for arithmatically encoding and + * decoding DFT coefficients. + * + */ + + +#include "arith_routines.h" + + + +static const WebRtc_Word32 kHistEdgesQ15[51] = { + -327680, -314573, -301466, -288359, -275252, -262144, -249037, -235930, -222823, -209716, + -196608, -183501, -170394, -157287, -144180, -131072, -117965, -104858, -91751, -78644, + -65536, -52429, -39322, -26215, -13108, 0, 13107, 26214, 39321, 52428, + 65536, 78643, 91750, 104857, 117964, 131072, 144179, 157286, 170393, 183500, + 196608, 209715, 222822, 235929, 249036, 262144, 275251, 288358, 301465, 314572, + 327680}; + + +static const int kCdfSlopeQ0[51] = { /* Q0 */ + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, + 5, 5, 13, 23, 47, 87, 154, 315, 700, 1088, + 2471, 6064, 14221, 21463, 36634, 36924, 19750, 13270, 5806, 2312, + 1095, 660, 316, 145, 86, 41, 32, 5, 5, 5, + 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 0}; + + +static const int kCdfQ16[51] = { /* Q16 */ + 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, + 20, 22, 24, 29, 38, 57, 92, 153, 279, 559, + 994, 1983, 4408, 10097, 18682, 33336, 48105, 56005, 61313, 63636, + 64560, 64998, 65262, 65389, 65447, 65481, 65497, 65510, 65512, 65514, + 65516, 65518, 65520, 65522, 65524, 65526, 65528, 65530, 65532, 65534, + 65535}; + + + +/* function to be converted to fixed point */ +static __inline WebRtc_UWord32 piecewise(WebRtc_Word32 xinQ15) { + + WebRtc_Word32 ind, qtmp1, qtmp2, qtmp3; + WebRtc_UWord32 tmpUW32; + + + qtmp2 = xinQ15; + + if (qtmp2 < kHistEdgesQ15[0]) { + qtmp2 = kHistEdgesQ15[0]; + } + if (qtmp2 > kHistEdgesQ15[50]) { + qtmp2 = kHistEdgesQ15[50]; + } + + qtmp1 = qtmp2 - kHistEdgesQ15[0]; /* Q15 - Q15 = Q15 */ + ind = (qtmp1 * 5) >> 16; /* 2^16 / 5 = 0.4 in Q15 */ + /* Q15 -> Q0 */ + qtmp1 = qtmp2 - kHistEdgesQ15[ind]; /* Q15 - Q15 = Q15 */ + qtmp2 = kCdfSlopeQ0[ind] * qtmp1; /* Q0 * Q15 = Q15 */ + qtmp3 = qtmp2>>15; /* Q15 -> Q0 */ + + tmpUW32 = kCdfQ16[ind] + qtmp3; /* Q0 + Q0 = Q0 */ + return tmpUW32; +} + + + +int WebRtcIsac_EncLogisticMulti2( + Bitstr *streamdata, /* in-/output struct containing bitstream */ + WebRtc_Word16 *dataQ7, /* input: data vector */ + const WebRtc_UWord16 *envQ8, /* input: side info vector defining the width of the pdf */ + const int N, /* input: data vector length / 2 */ + const WebRtc_Word16 isSWB12kHz) +{ + WebRtc_UWord32 W_lower, W_upper; + WebRtc_UWord32 W_upper_LSB, W_upper_MSB; + WebRtc_UWord8 *stream_ptr; + WebRtc_UWord8 *maxStreamPtr; + WebRtc_UWord8 *stream_ptr_carry; + WebRtc_UWord32 cdf_lo, cdf_hi; + int k; + + /* point to beginning of stream buffer */ + stream_ptr = streamdata->stream + streamdata->stream_index; + W_upper = streamdata->W_upper; + + maxStreamPtr = streamdata->stream + STREAM_SIZE_MAX_60 - 1; + for (k = 0; k < N; k++) + { + /* compute cdf_lower and cdf_upper by evaluating the piecewise linear cdf */ + cdf_lo = piecewise((*dataQ7 - 64) * *envQ8); + cdf_hi = piecewise((*dataQ7 + 64) * *envQ8); + + /* test and clip if probability gets too small */ + while (cdf_lo+1 >= cdf_hi) { + /* clip */ + if (*dataQ7 > 0) { + *dataQ7 -= 128; + cdf_hi = cdf_lo; + cdf_lo = piecewise((*dataQ7 - 64) * *envQ8); + } else { + *dataQ7 += 128; + cdf_lo = cdf_hi; + cdf_hi = piecewise((*dataQ7 + 64) * *envQ8); + } + } + + dataQ7++; + // increment only once per 4 iterations for SWB-16kHz or WB + // increment only once per 2 iterations for SWB-12kHz + envQ8 += (isSWB12kHz)? (k & 1):((k & 1) & (k >> 1)); + + + /* update interval */ + W_upper_LSB = W_upper & 0x0000FFFF; + W_upper_MSB = W_upper >> 16; + W_lower = W_upper_MSB * cdf_lo; + W_lower += (W_upper_LSB * cdf_lo) >> 16; + W_upper = W_upper_MSB * cdf_hi; + W_upper += (W_upper_LSB * cdf_hi) >> 16; + + /* shift interval such that it begins at zero */ + W_upper -= ++W_lower; + + /* add integer to bitstream */ + streamdata->streamval += W_lower; + + /* handle carry */ + if (streamdata->streamval < W_lower) + { + /* propagate carry */ + stream_ptr_carry = stream_ptr; + while (!(++(*--stream_ptr_carry))); + } + + /* renormalize interval, store most significant byte of streamval and update streamval */ + while ( !(W_upper & 0xFF000000) ) /* W_upper < 2^24 */ + { + W_upper <<= 8; + *stream_ptr++ = (WebRtc_UWord8) (streamdata->streamval >> 24); + + if(stream_ptr > maxStreamPtr) + { + return -ISAC_DISALLOWED_BITSTREAM_LENGTH; + } + streamdata->streamval <<= 8; + } + } + + /* calculate new stream_index */ + streamdata->stream_index = (int)(stream_ptr - streamdata->stream); + streamdata->W_upper = W_upper; + + return 0; +} + + + +int WebRtcIsac_DecLogisticMulti2( + WebRtc_Word16 *dataQ7, /* output: data vector */ + Bitstr *streamdata, /* in-/output struct containing bitstream */ + const WebRtc_UWord16 *envQ8, /* input: side info vector defining the width of the pdf */ + const WebRtc_Word16 *ditherQ7,/* input: dither vector */ + const int N, /* input: data vector length */ + const WebRtc_Word16 isSWB12kHz) +{ + WebRtc_UWord32 W_lower, W_upper; + WebRtc_UWord32 W_tmp; + WebRtc_UWord32 W_upper_LSB, W_upper_MSB; + WebRtc_UWord32 streamval; + const WebRtc_UWord8 *stream_ptr; + WebRtc_UWord32 cdf_tmp; + WebRtc_Word16 candQ7; + int k; + + stream_ptr = streamdata->stream + streamdata->stream_index; + W_upper = streamdata->W_upper; + if (streamdata->stream_index == 0) /* first time decoder is called for this stream */ + { + /* read first word from bytestream */ + streamval = *stream_ptr << 24; + streamval |= *++stream_ptr << 16; + streamval |= *++stream_ptr << 8; + streamval |= *++stream_ptr; + } else { + streamval = streamdata->streamval; + } + + + for (k = 0; k < N; k++) + { + /* find the integer *data for which streamval lies in [W_lower+1, W_upper] */ + W_upper_LSB = W_upper & 0x0000FFFF; + W_upper_MSB = W_upper >> 16; + + /* find first candidate by inverting the logistic cdf */ + candQ7 = - *ditherQ7 + 64; + cdf_tmp = piecewise(candQ7 * *envQ8); + + W_tmp = W_upper_MSB * cdf_tmp; + W_tmp += (W_upper_LSB * cdf_tmp) >> 16; + if (streamval > W_tmp) + { + W_lower = W_tmp; + candQ7 += 128; + cdf_tmp = piecewise(candQ7 * *envQ8); + + W_tmp = W_upper_MSB * cdf_tmp; + W_tmp += (W_upper_LSB * cdf_tmp) >> 16; + while (streamval > W_tmp) + { + W_lower = W_tmp; + candQ7 += 128; + cdf_tmp = piecewise(candQ7 * *envQ8); + + W_tmp = W_upper_MSB * cdf_tmp; + W_tmp += (W_upper_LSB * cdf_tmp) >> 16; + + /* error check */ + if (W_lower == W_tmp) return -1; + } + W_upper = W_tmp; + + /* another sample decoded */ + *dataQ7 = candQ7 - 64; + } + else + { + W_upper = W_tmp; + candQ7 -= 128; + cdf_tmp = piecewise(candQ7 * *envQ8); + + W_tmp = W_upper_MSB * cdf_tmp; + W_tmp += (W_upper_LSB * cdf_tmp) >> 16; + while ( !(streamval > W_tmp) ) + { + W_upper = W_tmp; + candQ7 -= 128; + cdf_tmp = piecewise(candQ7 * *envQ8); + + W_tmp = W_upper_MSB * cdf_tmp; + W_tmp += (W_upper_LSB * cdf_tmp) >> 16; + + /* error check */ + if (W_upper == W_tmp) return -1; + } + W_lower = W_tmp; + + /* another sample decoded */ + *dataQ7 = candQ7 + 64; + } + ditherQ7++; + dataQ7++; + // increment only once per 4 iterations for SWB-16kHz or WB + // increment only once per 2 iterations for SWB-12kHz + envQ8 += (isSWB12kHz)? (k & 1):((k & 1) & (k >> 1)); + + /* shift interval to start at zero */ + W_upper -= ++W_lower; + + /* add integer to bitstream */ + streamval -= W_lower; + + /* renormalize interval and update streamval */ + while ( !(W_upper & 0xFF000000) ) /* W_upper < 2^24 */ + { + /* read next byte from stream */ + streamval = (streamval << 8) | *++stream_ptr; + W_upper <<= 8; + } + } + + streamdata->stream_index = (int)(stream_ptr - streamdata->stream); + streamdata->W_upper = W_upper; + streamdata->streamval = streamval; + + /* find number of bytes in original stream (determined by current interval width) */ + if ( W_upper > 0x01FFFFFF ) + return streamdata->stream_index - 2; + else + return streamdata->stream_index - 1; +} diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/bandwidth_estimator.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/bandwidth_estimator.c.svn-base new file mode 100644 index 0000000000..85912efbc8 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/bandwidth_estimator.c.svn-base @@ -0,0 +1,1024 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * BwEstimator.c + * + * This file contains the code for the Bandwidth Estimator designed + * for iSAC. + * + */ + +#include "bandwidth_estimator.h" +#include "settings.h" +#include "isac.h" + +#include + +/* array of quantization levels for bottle neck info; Matlab code: */ +/* sprintf('%4.1ff, ', logspace(log10(5000), log10(40000), 12)) */ +static const float kQRateTableWb[12] = +{ + 10000.0f, 11115.3f, 12355.1f, 13733.1f, 15264.8f, 16967.3f, + 18859.8f, 20963.3f, 23301.4f, 25900.3f, 28789.0f, 32000.0f}; + + +static const float kQRateTableSwb[24] = +{ + 10000.0f, 11115.3f, 12355.1f, 13733.1f, 15264.8f, 16967.3f, + 18859.8f, 20963.3f, 23153.1f, 25342.9f, 27532.7f, 29722.5f, + 31912.3f, 34102.1f, 36291.9f, 38481.7f, 40671.4f, 42861.2f, + 45051.0f, 47240.8f, 49430.6f, 51620.4f, 53810.2f, 56000.0f, +}; + + + + +WebRtc_Word32 WebRtcIsac_InitBandwidthEstimator( + BwEstimatorstr* bwest_str, + enum IsacSamplingRate encoderSampRate, + enum IsacSamplingRate decoderSampRate) +{ + switch(encoderSampRate) + { + case kIsacWideband: + { + bwest_str->send_bw_avg = INIT_BN_EST_WB; + break; + } + case kIsacSuperWideband: + { + bwest_str->send_bw_avg = INIT_BN_EST_SWB; + break; + } + default: + return -1; + } + + switch(decoderSampRate) + { + case kIsacWideband: + { + bwest_str->prev_frame_length = INIT_FRAME_LEN_WB; + bwest_str->rec_bw_inv = 1.0f / + (INIT_BN_EST_WB + INIT_HDR_RATE_WB); + bwest_str->rec_bw = (WebRtc_Word32)INIT_BN_EST_WB; + bwest_str->rec_bw_avg_Q = INIT_BN_EST_WB; + bwest_str->rec_bw_avg = INIT_BN_EST_WB + INIT_HDR_RATE_WB; + bwest_str->rec_header_rate = INIT_HDR_RATE_WB; + break; + } + case kIsacSuperWideband: + { + bwest_str->prev_frame_length = INIT_FRAME_LEN_SWB; + bwest_str->rec_bw_inv = 1.0f / + (INIT_BN_EST_SWB + INIT_HDR_RATE_SWB); + bwest_str->rec_bw = (WebRtc_Word32)INIT_BN_EST_SWB; + bwest_str->rec_bw_avg_Q = INIT_BN_EST_SWB; + bwest_str->rec_bw_avg = INIT_BN_EST_SWB + INIT_HDR_RATE_SWB; + bwest_str->rec_header_rate = INIT_HDR_RATE_SWB; + break; + } + default: + return -1; + } + + bwest_str->prev_rec_rtp_number = 0; + bwest_str->prev_rec_arr_ts = 0; + bwest_str->prev_rec_send_ts = 0; + bwest_str->prev_rec_rtp_rate = 1.0f; + bwest_str->last_update_ts = 0; + bwest_str->last_reduction_ts = 0; + bwest_str->count_tot_updates_rec = -9; + bwest_str->rec_jitter = 10.0f; + bwest_str->rec_jitter_short_term = 0.0f; + bwest_str->rec_jitter_short_term_abs = 5.0f; + bwest_str->rec_max_delay = 10.0f; + bwest_str->rec_max_delay_avg_Q = 10.0f; + bwest_str->num_pkts_rec = 0; + + bwest_str->send_max_delay_avg = 10.0f; + + bwest_str->hsn_detect_rec = 0; + + bwest_str->num_consec_rec_pkts_over_30k = 0; + + bwest_str->hsn_detect_snd = 0; + + bwest_str->num_consec_snt_pkts_over_30k = 0; + + bwest_str->in_wait_period = 0; + + bwest_str->change_to_WB = 0; + + bwest_str->numConsecLatePkts = 0; + bwest_str->consecLatency = 0; + bwest_str->inWaitLatePkts = 0; + bwest_str->senderTimestamp = 0; + bwest_str->receiverTimestamp = 0; + return 0; +} + +/* This function updates both bottle neck rates */ +/* Parameters: */ +/* rtp_number - value from RTP packet, from NetEq */ +/* frame length - length of signal frame in ms, from iSAC decoder */ +/* send_ts - value in RTP header giving send time in samples */ +/* arr_ts - value given by timeGetTime() time of arrival in samples of packet from NetEq */ +/* pksize - size of packet in bytes, from NetEq */ +/* Index - integer (range 0...23) indicating bottle neck & jitter as estimated by other side */ +/* returns 0 if everything went fine, -1 otherwise */ +WebRtc_Word16 WebRtcIsac_UpdateBandwidthEstimator( + BwEstimatorstr *bwest_str, + const WebRtc_UWord16 rtp_number, + const WebRtc_Word32 frame_length, + const WebRtc_UWord32 send_ts, + const WebRtc_UWord32 arr_ts, + const WebRtc_Word32 pksize + /*, const WebRtc_UWord16 Index*/) +{ + float weight = 0.0f; + float curr_bw_inv = 0.0f; + float rec_rtp_rate; + float t_diff_proj; + float arr_ts_diff; + float send_ts_diff; + float arr_time_noise; + float arr_time_noise_abs; + + float delay_correction_factor = 1; + float late_diff = 0.0f; + int immediate_set = 0; + int num_pkts_expected; + + + // We have to adjust the header-rate if the first packet has a + // frame-size different than the initialized value. + if ( frame_length != bwest_str->prev_frame_length ) + { + bwest_str->rec_header_rate = (float)HEADER_SIZE * 8.0f * + 1000.0f / (float)frame_length; /* bits/s */ + } + + /* UPDATE ESTIMATES ON THIS SIDE */ + /* compute far-side transmission rate */ + rec_rtp_rate = ((float)pksize * 8.0f * 1000.0f / (float)frame_length) + + bwest_str->rec_header_rate; + // rec_rtp_rate packet bits/s + header bits/s + + /* check for timer wrap-around */ + if (arr_ts < bwest_str->prev_rec_arr_ts) + { + bwest_str->prev_rec_arr_ts = arr_ts; + bwest_str->last_update_ts = arr_ts; + bwest_str->last_reduction_ts = arr_ts + 3*FS; + bwest_str->num_pkts_rec = 0; + + /* store frame length */ + bwest_str->prev_frame_length = frame_length; + + /* store far-side transmission rate */ + bwest_str->prev_rec_rtp_rate = rec_rtp_rate; + + /* store far-side RTP time stamp */ + bwest_str->prev_rec_rtp_number = rtp_number; + + return 0; + } + + bwest_str->num_pkts_rec++; + + /* check that it's not one of the first 9 packets */ + if ( bwest_str->count_tot_updates_rec > 0 ) + { + if(bwest_str->in_wait_period > 0 ) + { + bwest_str->in_wait_period--; + } + + bwest_str->inWaitLatePkts -= ((bwest_str->inWaitLatePkts > 0)? 1:0); + send_ts_diff = (float)(send_ts - bwest_str->prev_rec_send_ts); + + if (send_ts_diff <= (16 * frame_length)*2) + //doesn't allow for a dropped packet, not sure necessary to be + // that strict -DH + { + /* if not been updated for a long time, reduce the BN estimate */ + if((WebRtc_UWord32)(arr_ts - bwest_str->last_update_ts) * + 1000.0f / FS > 3000) + { + //how many frames should have been received since the last + // update if too many have been dropped or there have been + // big delays won't allow this reduction may no longer need + // the send_ts_diff here + num_pkts_expected = (int)(((float)(arr_ts - + bwest_str->last_update_ts) * 1000.0f /(float) FS) / + (float)frame_length); + + if(((float)bwest_str->num_pkts_rec/(float)num_pkts_expected) > + 0.9) + { + float inv_bitrate = (float) pow( 0.99995, + (double)((WebRtc_UWord32)(arr_ts - + bwest_str->last_reduction_ts)*1000.0f/FS) ); + + if ( inv_bitrate ) + { + bwest_str->rec_bw_inv /= inv_bitrate; + + //precautionary, likely never necessary + if (bwest_str->hsn_detect_snd && + bwest_str->hsn_detect_rec) + { + if (bwest_str->rec_bw_inv > 0.000066f) + { + bwest_str->rec_bw_inv = 0.000066f; + } + } + } + else + { + bwest_str->rec_bw_inv = 1.0f / + (INIT_BN_EST_WB + INIT_HDR_RATE_WB); + } + /* reset time-since-update counter */ + bwest_str->last_reduction_ts = arr_ts; + } + else + //reset here? + { + bwest_str->last_reduction_ts = arr_ts + 3*FS; + bwest_str->last_update_ts = arr_ts; + bwest_str->num_pkts_rec = 0; + } + } + } + else + { + bwest_str->last_reduction_ts = arr_ts + 3*FS; + bwest_str->last_update_ts = arr_ts; + bwest_str->num_pkts_rec = 0; + } + + + /* temporarily speed up adaptation if frame length has changed */ + if ( frame_length != bwest_str->prev_frame_length ) + { + bwest_str->count_tot_updates_rec = 10; + bwest_str->rec_header_rate = (float)HEADER_SIZE * 8.0f * + 1000.0f / (float)frame_length; /* bits/s */ + + bwest_str->rec_bw_inv = 1.0f /((float)bwest_str->rec_bw + + bwest_str->rec_header_rate); + } + + //////////////////////// + arr_ts_diff = (float)(arr_ts - bwest_str->prev_rec_arr_ts); + + if (send_ts_diff > 0 ) + { + late_diff = arr_ts_diff - send_ts_diff; + } + else + { + late_diff = arr_ts_diff - (float)(16 * frame_length); + } + + if((late_diff > 0) && !bwest_str->inWaitLatePkts) + { + bwest_str->numConsecLatePkts++; + bwest_str->consecLatency += late_diff; + } + else + { + bwest_str->numConsecLatePkts = 0; + bwest_str->consecLatency = 0; + } + if(bwest_str->numConsecLatePkts > 50) + { + float latencyMs = bwest_str->consecLatency/(FS/1000); + float averageLatencyMs = latencyMs / bwest_str->numConsecLatePkts; + delay_correction_factor = frame_length / (frame_length + averageLatencyMs); + immediate_set = 1; + bwest_str->inWaitLatePkts = (WebRtc_Word16)((bwest_str->consecLatency/(FS/1000)) / 30);// + 150; + bwest_str->start_wait_period = arr_ts; + } + /////////////////////////////////////////////// + + + + /* update only if previous packet was not lost */ + if ( rtp_number == bwest_str->prev_rec_rtp_number + 1 ) + { + + + if (!(bwest_str->hsn_detect_snd && bwest_str->hsn_detect_rec)) + { + if ((arr_ts_diff > (float)(16 * frame_length))) + { + //1/2 second + if ((late_diff > 8000.0f) && !bwest_str->in_wait_period) + { + delay_correction_factor = 0.7f; + bwest_str->in_wait_period = 55; + bwest_str->start_wait_period = arr_ts; + immediate_set = 1; + } + //320 ms + else if (late_diff > 5120.0f && !bwest_str->in_wait_period) + { + delay_correction_factor = 0.8f; + immediate_set = 1; + bwest_str->in_wait_period = 44; + bwest_str->start_wait_period = arr_ts; + } + } + } + + + if ((bwest_str->prev_rec_rtp_rate > bwest_str->rec_bw_avg) && + (rec_rtp_rate > bwest_str->rec_bw_avg) && + !bwest_str->in_wait_period) + { + /* test if still in initiation period and increment counter */ + if (bwest_str->count_tot_updates_rec++ > 99) + { + /* constant weight after initiation part */ + weight = 0.01f; + } + else + { + /* weight decreases with number of updates */ + weight = 1.0f / (float) bwest_str->count_tot_updates_rec; + } + /* Bottle Neck Estimation */ + + /* limit outliers */ + /* if more than 25 ms too much */ + if (arr_ts_diff > frame_length * FS/1000 + 400.0f) + { + // in samples, why 25ms?? + arr_ts_diff = frame_length * FS/1000 + 400.0f; + } + if(arr_ts_diff < (frame_length * FS/1000) - 160.0f) + { + /* don't allow it to be less than frame rate - 10 ms */ + arr_ts_diff = (float)frame_length * FS/1000 - 160.0f; + } + + /* compute inverse receiving rate for last packet */ + curr_bw_inv = arr_ts_diff / ((float)(pksize + HEADER_SIZE) * + 8.0f * FS); // (180+35)*8*16000 = 27.5 Mbit.... + + + if(curr_bw_inv < + (1.0f / (MAX_ISAC_BW + bwest_str->rec_header_rate))) + { + // don't allow inv rate to be larger than MAX + curr_bw_inv = (1.0f / + (MAX_ISAC_BW + bwest_str->rec_header_rate)); + } + + /* update bottle neck rate estimate */ + bwest_str->rec_bw_inv = weight * curr_bw_inv + + (1.0f - weight) * bwest_str->rec_bw_inv; + + /* reset time-since-update counter */ + bwest_str->last_update_ts = arr_ts; + bwest_str->last_reduction_ts = arr_ts + 3 * FS; + bwest_str->num_pkts_rec = 0; + + /* Jitter Estimation */ + /* projected difference between arrival times */ + t_diff_proj = ((float)(pksize + HEADER_SIZE) * 8.0f * + 1000.0f) / bwest_str->rec_bw_avg; + + + // difference between projected and actual + // arrival time differences + arr_time_noise = (float)(arr_ts_diff*1000.0f/FS) - + t_diff_proj; + arr_time_noise_abs = (float) fabs( arr_time_noise ); + + /* long term averaged absolute jitter */ + bwest_str->rec_jitter = weight * arr_time_noise_abs + + (1.0f - weight) * bwest_str->rec_jitter; + if (bwest_str->rec_jitter > 10.0f) + { + bwest_str->rec_jitter = 10.0f; + } + /* short term averaged absolute jitter */ + bwest_str->rec_jitter_short_term_abs = 0.05f * + arr_time_noise_abs + 0.95f * + bwest_str->rec_jitter_short_term_abs; + + /* short term averaged jitter */ + bwest_str->rec_jitter_short_term = 0.05f * arr_time_noise + + 0.95f * bwest_str->rec_jitter_short_term; + } + } + } + else + { + // reset time-since-update counter when + // receiving the first 9 packets + bwest_str->last_update_ts = arr_ts; + bwest_str->last_reduction_ts = arr_ts + 3*FS; + bwest_str->num_pkts_rec = 0; + + bwest_str->count_tot_updates_rec++; + } + + /* limit minimum bottle neck rate */ + if (bwest_str->rec_bw_inv > 1.0f / ((float)MIN_ISAC_BW + + bwest_str->rec_header_rate)) + { + bwest_str->rec_bw_inv = 1.0f / ((float)MIN_ISAC_BW + + bwest_str->rec_header_rate); + } + + // limit maximum bitrate + if (bwest_str->rec_bw_inv < 1.0f / ((float)MAX_ISAC_BW + + bwest_str->rec_header_rate)) + { + bwest_str->rec_bw_inv = 1.0f / ((float)MAX_ISAC_BW + + bwest_str->rec_header_rate); + } + + /* store frame length */ + bwest_str->prev_frame_length = frame_length; + + /* store far-side transmission rate */ + bwest_str->prev_rec_rtp_rate = rec_rtp_rate; + + /* store far-side RTP time stamp */ + bwest_str->prev_rec_rtp_number = rtp_number; + + // Replace bwest_str->rec_max_delay by the new + // value (atomic operation) + bwest_str->rec_max_delay = 3.0f * bwest_str->rec_jitter; + + /* store send and arrival time stamp */ + bwest_str->prev_rec_arr_ts = arr_ts ; + bwest_str->prev_rec_send_ts = send_ts; + + /* Replace bwest_str->rec_bw by the new value (atomic operation) */ + bwest_str->rec_bw = (WebRtc_Word32)(1.0f / bwest_str->rec_bw_inv - + bwest_str->rec_header_rate); + + if (immediate_set) + { + bwest_str->rec_bw = (WebRtc_Word32) (delay_correction_factor * + (float) bwest_str->rec_bw); + + if (bwest_str->rec_bw < (WebRtc_Word32) MIN_ISAC_BW) + { + bwest_str->rec_bw = (WebRtc_Word32) MIN_ISAC_BW; + } + + bwest_str->rec_bw_avg = bwest_str->rec_bw + + bwest_str->rec_header_rate; + + bwest_str->rec_bw_avg_Q = (float) bwest_str->rec_bw; + + bwest_str->rec_jitter_short_term = 0.0f; + + bwest_str->rec_bw_inv = 1.0f / (bwest_str->rec_bw + + bwest_str->rec_header_rate); + + bwest_str->count_tot_updates_rec = 1; + + immediate_set = 0; + bwest_str->consecLatency = 0; + bwest_str->numConsecLatePkts = 0; + } + + return 0; +} + + +/* This function updates the send bottle neck rate */ +/* Index - integer (range 0...23) indicating bottle neck & jitter as estimated by other side */ +/* returns 0 if everything went fine, -1 otherwise */ +WebRtc_Word16 WebRtcIsac_UpdateUplinkBwImpl( + BwEstimatorstr* bwest_str, + WebRtc_Word16 index, + enum IsacSamplingRate encoderSamplingFreq) +{ + if((index < 0) || (index > 23)) + { + return -ISAC_RANGE_ERROR_BW_ESTIMATOR; + } + + /* UPDATE ESTIMATES FROM OTHER SIDE */ + if(encoderSamplingFreq == kIsacWideband) + { + if(index > 11) + { + index -= 12; + /* compute the jitter estimate as decoded on the other side */ + bwest_str->send_max_delay_avg = 0.9f * bwest_str->send_max_delay_avg + + 0.1f * (float)MAX_ISAC_MD; + } + else + { + /* compute the jitter estimate as decoded on the other side */ + bwest_str->send_max_delay_avg = 0.9f * bwest_str->send_max_delay_avg + + 0.1f * (float)MIN_ISAC_MD; + } + + /* compute the BN estimate as decoded on the other side */ + bwest_str->send_bw_avg = 0.9f * bwest_str->send_bw_avg + + 0.1f * kQRateTableWb[index]; + } + else + { + /* compute the BN estimate as decoded on the other side */ + bwest_str->send_bw_avg = 0.9f * bwest_str->send_bw_avg + + 0.1f * kQRateTableSwb[index]; + } + + if (bwest_str->send_bw_avg > (float) 28000 && !bwest_str->hsn_detect_snd) + { + bwest_str->num_consec_snt_pkts_over_30k++; + + if (bwest_str->num_consec_snt_pkts_over_30k >= 66) + { + //approx 2 seconds with 30ms frames + bwest_str->hsn_detect_snd = 1; + } + } + else if (!bwest_str->hsn_detect_snd) + { + bwest_str->num_consec_snt_pkts_over_30k = 0; + } + return 0; +} + +// called when there is upper-band bit-stream to update jitter +// statistics. +WebRtc_Word16 WebRtcIsac_UpdateUplinkJitter( + BwEstimatorstr* bwest_str, + WebRtc_Word32 index) +{ + if((index < 0) || (index > 23)) + { + return -ISAC_RANGE_ERROR_BW_ESTIMATOR; + } + + if(index > 0) + { + /* compute the jitter estimate as decoded on the other side */ + bwest_str->send_max_delay_avg = 0.9f * bwest_str->send_max_delay_avg + + 0.1f * (float)MAX_ISAC_MD; + } + else + { + /* compute the jitter estimate as decoded on the other side */ + bwest_str->send_max_delay_avg = 0.9f * bwest_str->send_max_delay_avg + + 0.1f * (float)MIN_ISAC_MD; + } + + return 0; +} + + + +// Returns the bandwidth/jitter estimation code (integer 0...23) +// to put in the sending iSAC payload +WebRtc_UWord16 +WebRtcIsac_GetDownlinkBwJitIndexImpl( + BwEstimatorstr* bwest_str, + WebRtc_Word16* bottleneckIndex, + WebRtc_Word16* jitterInfo, + enum IsacSamplingRate decoderSamplingFreq) +{ + float MaxDelay; + //WebRtc_UWord16 MaxDelayBit; + + float rate; + float r; + float e1, e2; + const float weight = 0.1f; + const float* ptrQuantizationTable; + WebRtc_Word16 addJitterInfo; + WebRtc_Word16 minInd; + WebRtc_Word16 maxInd; + WebRtc_Word16 midInd; + + /* Get Max Delay Bit */ + /* get unquantized max delay */ + MaxDelay = (float)WebRtcIsac_GetDownlinkMaxDelay(bwest_str); + + if ( ((1.f - weight) * bwest_str->rec_max_delay_avg_Q + weight * + MAX_ISAC_MD - MaxDelay) > (MaxDelay - (1.f-weight) * + bwest_str->rec_max_delay_avg_Q - weight * MIN_ISAC_MD) ) + { + jitterInfo[0] = 0; + /* update quantized average */ + bwest_str->rec_max_delay_avg_Q = + (1.f - weight) * bwest_str->rec_max_delay_avg_Q + weight * + (float)MIN_ISAC_MD; + } + else + { + jitterInfo[0] = 1; + /* update quantized average */ + bwest_str->rec_max_delay_avg_Q = + (1.f-weight) * bwest_str->rec_max_delay_avg_Q + weight * + (float)MAX_ISAC_MD; + } + + // Get unquantized rate. + rate = (float)WebRtcIsac_GetDownlinkBandwidth(bwest_str); + + /* Get Rate Index */ + if(decoderSamplingFreq == kIsacWideband) + { + ptrQuantizationTable = kQRateTableWb; + addJitterInfo = 1; + maxInd = 11; + } + else + { + ptrQuantizationTable = kQRateTableSwb; + addJitterInfo = 0; + maxInd = 23; + } + + minInd = 0; + while(maxInd > minInd + 1) + { + midInd = (maxInd + minInd) >> 1; + if(rate > ptrQuantizationTable[midInd]) + { + minInd = midInd; + } + else + { + maxInd = midInd; + } + } + // Chose the index which gives results an average which is closest + // to rate + r = (1 - weight) * bwest_str->rec_bw_avg_Q - rate; + e1 = weight * ptrQuantizationTable[minInd] + r; + e2 = weight * ptrQuantizationTable[maxInd] + r; + e1 = (e1 > 0)? e1:-e1; + e2 = (e2 > 0)? e2:-e2; + if(e1 < e2) + { + bottleneckIndex[0] = minInd; + } + else + { + bottleneckIndex[0] = maxInd; + } + + bwest_str->rec_bw_avg_Q = (1 - weight) * bwest_str->rec_bw_avg_Q + + weight * ptrQuantizationTable[bottleneckIndex[0]]; + bottleneckIndex[0] += jitterInfo[0] * 12 * addJitterInfo; + + bwest_str->rec_bw_avg = (1 - weight) * bwest_str->rec_bw_avg + weight * + (rate + bwest_str->rec_header_rate); + + return 0; +} + + + +/* get the bottle neck rate from far side to here, as estimated on this side */ +WebRtc_Word32 WebRtcIsac_GetDownlinkBandwidth( const BwEstimatorstr *bwest_str) +{ + WebRtc_Word32 rec_bw; + float jitter_sign; + float bw_adjust; + + /* create a value between -1.0 and 1.0 indicating "average sign" of jitter */ + jitter_sign = bwest_str->rec_jitter_short_term / + bwest_str->rec_jitter_short_term_abs; + + /* adjust bw proportionally to negative average jitter sign */ + bw_adjust = 1.0f - jitter_sign * (0.15f + 0.15f * jitter_sign * jitter_sign); + + /* adjust Rate if jitter sign is mostly constant */ + rec_bw = (WebRtc_Word32)(bwest_str->rec_bw * bw_adjust); + + /* limit range of bottle neck rate */ + if (rec_bw < MIN_ISAC_BW) + { + rec_bw = MIN_ISAC_BW; + } + else if (rec_bw > MAX_ISAC_BW) + { + rec_bw = MAX_ISAC_BW; + } + return rec_bw; +} + +/* Returns the max delay (in ms) */ +WebRtc_Word32 +WebRtcIsac_GetDownlinkMaxDelay(const BwEstimatorstr *bwest_str) +{ + WebRtc_Word32 rec_max_delay; + + rec_max_delay = (WebRtc_Word32)(bwest_str->rec_max_delay); + + /* limit range of jitter estimate */ + if (rec_max_delay < MIN_ISAC_MD) + { + rec_max_delay = MIN_ISAC_MD; + } + else if (rec_max_delay > MAX_ISAC_MD) + { + rec_max_delay = MAX_ISAC_MD; + } + return rec_max_delay; +} + +/* get the bottle neck rate from here to far side, as estimated by far side */ +void +WebRtcIsac_GetUplinkBandwidth( + const BwEstimatorstr* bwest_str, + WebRtc_Word32* bitRate) +{ + /* limit range of bottle neck rate */ + if (bwest_str->send_bw_avg < MIN_ISAC_BW) + { + *bitRate = MIN_ISAC_BW; + } + else if (bwest_str->send_bw_avg > MAX_ISAC_BW) + { + *bitRate = MAX_ISAC_BW; + } + else + { + *bitRate = (WebRtc_Word32)(bwest_str->send_bw_avg); + } + return; +} + +/* Returns the max delay value from the other side in ms */ +WebRtc_Word32 +WebRtcIsac_GetUplinkMaxDelay(const BwEstimatorstr *bwest_str) +{ + WebRtc_Word32 send_max_delay; + + send_max_delay = (WebRtc_Word32)(bwest_str->send_max_delay_avg); + + /* limit range of jitter estimate */ + if (send_max_delay < MIN_ISAC_MD) + { + send_max_delay = MIN_ISAC_MD; + } + else if (send_max_delay > MAX_ISAC_MD) + { + send_max_delay = MAX_ISAC_MD; + } + return send_max_delay; +} + + +/* + * update long-term average bitrate and amount of data in buffer + * returns minimum payload size (bytes) + */ +int WebRtcIsac_GetMinBytes( + RateModel* State, + int StreamSize, /* bytes in bitstream */ + const int FrameSamples, /* samples per frame */ + const double BottleNeck, /* bottle neck rate; excl headers (bps) */ + const double DelayBuildUp, /* max delay from bottleneck buffering (ms) */ + enum ISACBandwidth bandwidth + /*,WebRtc_Word16 frequentLargePackets*/) +{ + double MinRate = 0.0; + int MinBytes; + double TransmissionTime; + int burstInterval = BURST_INTERVAL; + + // first 10 packets @ low rate, then INIT_BURST_LEN packets @ + // fixed rate of INIT_RATE bps + if (State->InitCounter > 0) + { + if (State->InitCounter-- <= INIT_BURST_LEN) + { + if(bandwidth == isac8kHz) + { + MinRate = INIT_RATE_WB; + } + else + { + MinRate = INIT_RATE_SWB; + } + } + else + { + MinRate = 0; + } + } + else + { + /* handle burst */ + if (State->BurstCounter) + { + if (State->StillBuffered < (1.0 - 1.0/BURST_LEN) * DelayBuildUp) + { + /* max bps derived from BottleNeck and DelayBuildUp values */ + MinRate = (1.0 + (FS/1000) * DelayBuildUp / + (double)(BURST_LEN * FrameSamples)) * BottleNeck; + } + else + { + // max bps derived from StillBuffered and DelayBuildUp + // values + MinRate = (1.0 + (FS/1000) * (DelayBuildUp - + State->StillBuffered) / (double)FrameSamples) * BottleNeck; + if (MinRate < 1.04 * BottleNeck) + { + MinRate = 1.04 * BottleNeck; + } + } + State->BurstCounter--; + } + } + + + /* convert rate from bits/second to bytes/packet */ + MinBytes = (int) (MinRate * FrameSamples / (8.0 * FS)); + + /* StreamSize will be adjusted if less than MinBytes */ + if (StreamSize < MinBytes) + { + StreamSize = MinBytes; + } + + /* keep track of when bottle neck was last exceeded by at least 1% */ + if (StreamSize * 8.0 * FS / FrameSamples > 1.01 * BottleNeck) { + if (State->PrevExceed) { + /* bottle_neck exceded twice in a row, decrease ExceedAgo */ + State->ExceedAgo -= /*BURST_INTERVAL*/ burstInterval / (BURST_LEN - 1); + if (State->ExceedAgo < 0) + State->ExceedAgo = 0; + } + else + { + State->ExceedAgo += (FrameSamples * 1000) / FS; /* ms */ + State->PrevExceed = 1; + } + } + else + { + State->PrevExceed = 0; + State->ExceedAgo += (FrameSamples * 1000) / FS; /* ms */ + } + + /* set burst flag if bottle neck not exceeded for long time */ + if ((State->ExceedAgo > burstInterval) && + (State->BurstCounter == 0)) + { + if (State->PrevExceed) + { + State->BurstCounter = BURST_LEN - 1; + } + else + { + State->BurstCounter = BURST_LEN; + } + } + + + /* Update buffer delay */ + TransmissionTime = StreamSize * 8.0 * 1000.0 / BottleNeck; /* ms */ + State->StillBuffered += TransmissionTime; + State->StillBuffered -= (FrameSamples * 1000) / FS; /* ms */ + if (State->StillBuffered < 0.0) + { + State->StillBuffered = 0.0; + } + + return MinBytes; +} + + +/* + * update long-term average bitrate and amount of data in buffer + */ +void WebRtcIsac_UpdateRateModel( + RateModel *State, + int StreamSize, /* bytes in bitstream */ + const int FrameSamples, /* samples per frame */ + const double BottleNeck) /* bottle neck rate; excl headers (bps) */ +{ + double TransmissionTime; + + /* avoid the initial "high-rate" burst */ + State->InitCounter = 0; + + /* Update buffer delay */ + TransmissionTime = StreamSize * 8.0 * 1000.0 / BottleNeck; /* ms */ + State->StillBuffered += TransmissionTime; + State->StillBuffered -= (FrameSamples * 1000) / FS; /* ms */ + if (State->StillBuffered < 0.0) + State->StillBuffered = 0.0; + +} + + +void WebRtcIsac_InitRateModel( + RateModel *State) +{ + State->PrevExceed = 0; /* boolean */ + State->ExceedAgo = 0; /* ms */ + State->BurstCounter = 0; /* packets */ + State->InitCounter = INIT_BURST_LEN + 10; /* packets */ + State->StillBuffered = 1.0; /* ms */ +} + +int WebRtcIsac_GetNewFrameLength( + double bottle_neck, + int current_framesamples) +{ + int new_framesamples; + + const int Thld_20_30 = 20000; + + //const int Thld_30_20 = 30000; + const int Thld_30_20 = 1000000; // disable 20 ms frames + + const int Thld_30_60 = 18000; + //const int Thld_30_60 = 0; // disable 60 ms frames + + const int Thld_60_30 = 27000; + + + new_framesamples = current_framesamples; + + /* find new framelength */ + switch(current_framesamples) { + case 320: + if (bottle_neck < Thld_20_30) + new_framesamples = 480; + break; + case 480: + if (bottle_neck < Thld_30_60) + new_framesamples = 960; + else if (bottle_neck > Thld_30_20) + new_framesamples = 320; + break; + case 960: + if (bottle_neck >= Thld_60_30) + new_framesamples = 480; + break; + } + + return new_framesamples; +} + +double WebRtcIsac_GetSnr( + double bottle_neck, + int framesamples) +{ + double s2nr; + + const double a_20 = -30.0; + const double b_20 = 0.8; + const double c_20 = 0.0; + + const double a_30 = -23.0; + const double b_30 = 0.48; + const double c_30 = 0.0; + + const double a_60 = -23.0; + const double b_60 = 0.53; + const double c_60 = 0.0; + + + /* find new SNR value */ + switch(framesamples) { + case 320: + s2nr = a_20 + b_20 * bottle_neck * 0.001 + c_20 * bottle_neck * + bottle_neck * 0.000001; + break; + case 480: + s2nr = a_30 + b_30 * bottle_neck * 0.001 + c_30 * bottle_neck * + bottle_neck * 0.000001; + break; + case 960: + s2nr = a_60 + b_60 * bottle_neck * 0.001 + c_60 * bottle_neck * + bottle_neck * 0.000001; + break; + default: + s2nr = 0; + } + + return s2nr; + +} diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/bandwidth_estimator.h.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/bandwidth_estimator.h.svn-base new file mode 100644 index 0000000000..5604d7bbbd --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/bandwidth_estimator.h.svn-base @@ -0,0 +1,177 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * bandwidth_estimator.h + * + * This header file contains the API for the Bandwidth Estimator + * designed for iSAC. + * + */ + +#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_BANDWIDTH_ESTIMATOR_H_ +#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_BANDWIDTH_ESTIMATOR_H_ + +#include "structs.h" +#include "settings.h" + + +#define MIN_ISAC_BW 10000 +#define MIN_ISAC_BW_LB 10000 +#define MIN_ISAC_BW_UB 25000 + +#define MAX_ISAC_BW 56000 +#define MAX_ISAC_BW_UB 32000 +#define MAX_ISAC_BW_LB 32000 + +#define MIN_ISAC_MD 5 +#define MAX_ISAC_MD 25 + +// assumed header size, in bytes; we don't know the exact number +// (header compression may be used) +#define HEADER_SIZE 35 + +// Initial Frame-Size, in ms, for Wideband & Super-Wideband Mode +#define INIT_FRAME_LEN_WB 60 +#define INIT_FRAME_LEN_SWB 30 + +// Initial Bottleneck Estimate, in bits/sec, for +// Wideband & Super-wideband mode +#define INIT_BN_EST_WB 20e3f +#define INIT_BN_EST_SWB 56e3f + +// Initial Header rate (header rate depends on frame-size), +// in bits/sec, for Wideband & Super-Wideband mode. +#define INIT_HDR_RATE_WB \ + ((float)HEADER_SIZE * 8.0f * 1000.0f / (float)INIT_FRAME_LEN_WB) +#define INIT_HDR_RATE_SWB \ + ((float)HEADER_SIZE * 8.0f * 1000.0f / (float)INIT_FRAME_LEN_SWB) + +// number of packets in a row for a high rate burst +#define BURST_LEN 3 + +// ms, max time between two full bursts +#define BURST_INTERVAL 500 + +// number of packets in a row for initial high rate burst +#define INIT_BURST_LEN 5 + +// bits/s, rate for the first BURST_LEN packets +#define INIT_RATE_WB INIT_BN_EST_WB +#define INIT_RATE_SWB INIT_BN_EST_SWB + + +#if defined(__cplusplus) +extern "C" { +#endif + + /* This function initializes the struct */ + /* to be called before using the struct for anything else */ + /* returns 0 if everything went fine, -1 otherwise */ + WebRtc_Word32 WebRtcIsac_InitBandwidthEstimator( + BwEstimatorstr* bwest_str, + enum IsacSamplingRate encoderSampRate, + enum IsacSamplingRate decoderSampRate); + + /* This function updates the receiving estimate */ + /* Parameters: */ + /* rtp_number - value from RTP packet, from NetEq */ + /* frame length - length of signal frame in ms, from iSAC decoder */ + /* send_ts - value in RTP header giving send time in samples */ + /* arr_ts - value given by timeGetTime() time of arrival in samples of packet from NetEq */ + /* pksize - size of packet in bytes, from NetEq */ + /* Index - integer (range 0...23) indicating bottle neck & jitter as estimated by other side */ + /* returns 0 if everything went fine, -1 otherwise */ + WebRtc_Word16 WebRtcIsac_UpdateBandwidthEstimator( + BwEstimatorstr* bwest_str, + const WebRtc_UWord16 rtp_number, + const WebRtc_Word32 frame_length, + const WebRtc_UWord32 send_ts, + const WebRtc_UWord32 arr_ts, + const WebRtc_Word32 pksize); + + /* Update receiving estimates. Used when we only receive BWE index, no iSAC data packet. */ + WebRtc_Word16 WebRtcIsac_UpdateUplinkBwImpl( + BwEstimatorstr* bwest_str, + WebRtc_Word16 Index, + enum IsacSamplingRate encoderSamplingFreq); + + /* Returns the bandwidth/jitter estimation code (integer 0...23) to put in the sending iSAC payload */ + WebRtc_UWord16 WebRtcIsac_GetDownlinkBwJitIndexImpl( + BwEstimatorstr* bwest_str, + WebRtc_Word16* bottleneckIndex, + WebRtc_Word16* jitterInfo, + enum IsacSamplingRate decoderSamplingFreq); + + /* Returns the bandwidth estimation (in bps) */ + WebRtc_Word32 WebRtcIsac_GetDownlinkBandwidth( + const BwEstimatorstr *bwest_str); + + /* Returns the max delay (in ms) */ + WebRtc_Word32 WebRtcIsac_GetDownlinkMaxDelay( + const BwEstimatorstr *bwest_str); + + /* Returns the bandwidth that iSAC should send with in bps */ + void WebRtcIsac_GetUplinkBandwidth( + const BwEstimatorstr* bwest_str, + WebRtc_Word32* bitRate); + + /* Returns the max delay value from the other side in ms */ + WebRtc_Word32 WebRtcIsac_GetUplinkMaxDelay( + const BwEstimatorstr *bwest_str); + + + /* + * update amount of data in bottle neck buffer and burst handling + * returns minimum payload size (bytes) + */ + int WebRtcIsac_GetMinBytes( + RateModel* State, + int StreamSize, /* bytes in bitstream */ + const int FrameLen, /* ms per frame */ + const double BottleNeck, /* bottle neck rate; excl headers (bps) */ + const double DelayBuildUp, /* max delay from bottleneck buffering (ms) */ + enum ISACBandwidth bandwidth + /*,WebRtc_Word16 frequentLargePackets*/); + + /* + * update long-term average bitrate and amount of data in buffer + */ + void WebRtcIsac_UpdateRateModel( + RateModel* State, + int StreamSize, /* bytes in bitstream */ + const int FrameSamples, /* samples per frame */ + const double BottleNeck); /* bottle neck rate; excl headers (bps) */ + + + void WebRtcIsac_InitRateModel( + RateModel *State); + + /* Returns the new framelength value (input argument: bottle_neck) */ + int WebRtcIsac_GetNewFrameLength( + double bottle_neck, + int current_framelength); + + /* Returns the new SNR value (input argument: bottle_neck) */ + double WebRtcIsac_GetSnr( + double bottle_neck, + int new_framelength); + + + WebRtc_Word16 WebRtcIsac_UpdateUplinkJitter( + BwEstimatorstr* bwest_str, + WebRtc_Word32 index); + +#if defined(__cplusplus) +} +#endif + + +#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_BANDWIDTH_ESTIMATOR_H_ */ diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/codec.h.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/codec.h.svn-base new file mode 100644 index 0000000000..6af27ea9e0 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/codec.h.svn-base @@ -0,0 +1,292 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * codec.h + * + * This header file contains the calls to the internal encoder + * and decoder functions. + * + */ + +#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_CODEC_H_ +#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_CODEC_H_ + +#include "structs.h" + +int WebRtcIsac_EstimateBandwidth( + BwEstimatorstr* bwest_str, + Bitstr* streamdata, + WebRtc_Word32 packet_size, + WebRtc_UWord16 rtp_seq_number, + WebRtc_UWord32 send_ts, + WebRtc_UWord32 arr_ts, + enum IsacSamplingRate encoderSampRate, + enum IsacSamplingRate decoderSampRate); + +int WebRtcIsac_DecodeLb( + float* signal_out, + ISACLBDecStruct* ISACdec_obj, + WebRtc_Word16* current_framesamples, + WebRtc_Word16 isRCUPayload); + +int WebRtcIsac_DecodeRcuLb( + float* signal_out, + ISACLBDecStruct* ISACdec_obj, + WebRtc_Word16* current_framesamples); + +int WebRtcIsac_EncodeLb( + float* in, + ISACLBEncStruct* ISACencLB_obj, + WebRtc_Word16 codingMode, + WebRtc_Word16 bottleneckIndex); + +int WebRtcIsac_EncodeStoredDataLb( + const ISAC_SaveEncData_t* ISACSavedEnc_obj, + Bitstr* ISACBitStr_obj, + int BWnumber, + float scale); + + +int WebRtcIsac_EncodeStoredDataUb12( + const ISACUBSaveEncDataStruct* ISACSavedEnc_obj, + Bitstr* bitStream, + WebRtc_Word32 jitterInfo, + float scale); + +int WebRtcIsac_EncodeStoredDataUb16( + const ISACUBSaveEncDataStruct* ISACSavedEnc_obj, + Bitstr* bitStream, + WebRtc_Word32 jitterInfo, + float scale); + + +WebRtc_Word16 WebRtcIsac_GetRedPayloadUb( + const ISACUBSaveEncDataStruct* ISACSavedEncObj, + Bitstr* bitStreamObj, + enum ISACBandwidth bandwidth); +/****************************************************************************** + * WebRtcIsac_RateAllocation() + * Internal function to perform a rate-allocation for upper and lower-band, + * given a total rate. + * + * Input: + * - inRateBitPerSec : a total bit-rate in bits/sec. + * + * Output: + * - rateLBBitPerSec : a bit-rate allocated to the lower-band + * in bits/sec. + * - rateUBBitPerSec : a bit-rate allocated to the upper-band + * in bits/sec. + * + * Return value : 0 if rate allocation has been successful. + * -1 if failed to allocate rates. + */ + +WebRtc_Word16 +WebRtcIsac_RateAllocation( + WebRtc_Word32 inRateBitPerSec, + double* rateLBBitPerSec, + double* rateUBBitPerSec, + enum ISACBandwidth* bandwidthKHz); + + +/****************************************************************************** + * WebRtcIsac_DecodeUb16() + * + * Decode the upper-band if the codec is in 0-16 kHz mode. + * + * Input/Output: + * -ISACdec_obj : pointer to the upper-band decoder object. The + * bit-stream is stored inside the decoder object. + * + * Output: + * -signal_out : decoded audio, 480 samples 30 ms. + * + * Return value : >0 number of decoded bytes. + * <0 if an error occurred. + */ +int WebRtcIsac_DecodeUb16( + float* signal_out, + ISACUBDecStruct* ISACdec_obj, + WebRtc_Word16 isRCUPayload); + + +/****************************************************************************** + * WebRtcIsac_DecodeUb12() + * + * Decode the upper-band if the codec is in 0-12 kHz mode. + * + * Input/Output: + * -ISACdec_obj : pointer to the upper-band decoder object. The + * bit-stream is stored inside the decoder object. + * + * Output: + * -signal_out : decoded audio, 480 samples 30 ms. + * + * Return value : >0 number of decoded bytes. + * <0 if an error occurred. + */ +int WebRtcIsac_DecodeUb12( + float* signal_out, + ISACUBDecStruct* ISACdec_obj, + WebRtc_Word16 isRCUPayload); + + +/****************************************************************************** + * WebRtcIsac_EncodeUb16() + * + * Encode the upper-band if the codec is in 0-16 kHz mode. + * + * Input: + * -in : upper-band audio, 160 samples (10 ms). + * + * Input/Output: + * -ISACdec_obj : pointer to the upper-band encoder object. The + * bit-stream is stored inside the encoder object. + * + * Return value : >0 number of encoded bytes. + * <0 if an error occurred. + */ +int WebRtcIsac_EncodeUb16( + float* in, + ISACUBEncStruct* ISACenc_obj, + WebRtc_Word32 jitterInfo); + + +/****************************************************************************** + * WebRtcIsac_EncodeUb12() + * + * Encode the upper-band if the codec is in 0-12 kHz mode. + * + * Input: + * -in : upper-band audio, 160 samples (10 ms). + * + * Input/Output: + * -ISACdec_obj : pointer to the upper-band encoder object. The + * bit-stream is stored inside the encoder object. + * + * Return value : >0 number of encoded bytes. + * <0 if an error occurred. + */ +int WebRtcIsac_EncodeUb12( + float* in, + ISACUBEncStruct* ISACenc_obj, + WebRtc_Word32 jitterInfo); + +/************************** initialization functions *************************/ + +void WebRtcIsac_InitMasking(MaskFiltstr *maskdata); + +void WebRtcIsac_InitPreFilterbank(PreFiltBankstr *prefiltdata); + +void WebRtcIsac_InitPostFilterbank(PostFiltBankstr *postfiltdata); + +void WebRtcIsac_InitPitchFilter(PitchFiltstr *pitchfiltdata); + +void WebRtcIsac_InitPitchAnalysis(PitchAnalysisStruct *State); + + +/**************************** transform functions ****************************/ + +void WebRtcIsac_InitTransform(); + +void WebRtcIsac_Time2Spec(double *inre1, + double *inre2, + WebRtc_Word16 *outre, + WebRtc_Word16 *outim, + FFTstr *fftstr_obj); + +void WebRtcIsac_Spec2time(double *inre, + double *inim, + double *outre1, + double *outre2, + FFTstr *fftstr_obj); + + +/******************************* filter functions ****************************/ + +void WebRtcIsac_AllPoleFilter(double *InOut, + double *Coef, + int lengthInOut, + int orderCoef); + +void WebRtcIsac_AllZeroFilter(double *In, + double *Coef, + int lengthInOut, + int orderCoef, + double *Out); + +void WebRtcIsac_ZeroPoleFilter(double *In, + double *ZeroCoef, + double *PoleCoef, + int lengthInOut, + int orderCoef, + double *Out); + + +/***************************** filterbank functions **************************/ + +void WebRtcIsac_SplitAndFilter(double *in, + double *LP, + double *HP, + double *LP_la, + double *HP_la, + PreFiltBankstr *prefiltdata); + + +void WebRtcIsac_FilterAndCombine(double *InLP, + double *InHP, + double *Out, + PostFiltBankstr *postfiltdata); + + + +void WebRtcIsac_SplitAndFilterFloat(float *in, + float *LP, + float *HP, + double *LP_la, + double *HP_la, + PreFiltBankstr *prefiltdata); + + +void WebRtcIsac_FilterAndCombineFloat(float *InLP, + float *InHP, + float *Out, + PostFiltBankstr *postfiltdata); + + +/************************* normalized lattice filters ************************/ + +void WebRtcIsac_NormLatticeFilterMa(int orderCoef, + float *stateF, + float *stateG, + float *lat_in, + double *filtcoeflo, + double *lat_out); + +void WebRtcIsac_NormLatticeFilterAr(int orderCoef, + float *stateF, + float *stateG, + double *lat_in, + double *lo_filt_coef, + float *lat_out); + +void WebRtcIsac_Dir2Lat(double *a, + int orderCoef, + float *sth, + float *cth); + +void WebRtcIsac_AutoCorr(double *r, + const double *x, + int N, + int order); + +#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_CODEC_H_ */ diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/crc.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/crc.c.svn-base new file mode 100644 index 0000000000..098e4b7a69 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/crc.c.svn-base @@ -0,0 +1,110 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#include "crc.h" +#include +#include "signal_processing_library.h" + +#define POLYNOMIAL 0x04c11db7L + + +static const WebRtc_UWord32 kCrcTable[256] = { + 0, 0x4c11db7, 0x9823b6e, 0xd4326d9, 0x130476dc, 0x17c56b6b, + 0x1a864db2, 0x1e475005, 0x2608edb8, 0x22c9f00f, 0x2f8ad6d6, 0x2b4bcb61, + 0x350c9b64, 0x31cd86d3, 0x3c8ea00a, 0x384fbdbd, 0x4c11db70, 0x48d0c6c7, + 0x4593e01e, 0x4152fda9, 0x5f15adac, 0x5bd4b01b, 0x569796c2, 0x52568b75, + 0x6a1936c8, 0x6ed82b7f, 0x639b0da6, 0x675a1011, 0x791d4014, 0x7ddc5da3, + 0x709f7b7a, 0x745e66cd, 0x9823b6e0, 0x9ce2ab57, 0x91a18d8e, 0x95609039, + 0x8b27c03c, 0x8fe6dd8b, 0x82a5fb52, 0x8664e6e5, 0xbe2b5b58, 0xbaea46ef, + 0xb7a96036, 0xb3687d81, 0xad2f2d84, 0xa9ee3033, 0xa4ad16ea, 0xa06c0b5d, + 0xd4326d90, 0xd0f37027, 0xddb056fe, 0xd9714b49, 0xc7361b4c, 0xc3f706fb, + 0xceb42022, 0xca753d95, 0xf23a8028, 0xf6fb9d9f, 0xfbb8bb46, 0xff79a6f1, + 0xe13ef6f4, 0xe5ffeb43, 0xe8bccd9a, 0xec7dd02d, 0x34867077, 0x30476dc0, + 0x3d044b19, 0x39c556ae, 0x278206ab, 0x23431b1c, 0x2e003dc5, 0x2ac12072, + 0x128e9dcf, 0x164f8078, 0x1b0ca6a1, 0x1fcdbb16, 0x18aeb13, 0x54bf6a4, + 0x808d07d, 0xcc9cdca, 0x7897ab07, 0x7c56b6b0, 0x71159069, 0x75d48dde, + 0x6b93dddb, 0x6f52c06c, 0x6211e6b5, 0x66d0fb02, 0x5e9f46bf, 0x5a5e5b08, + 0x571d7dd1, 0x53dc6066, 0x4d9b3063, 0x495a2dd4, 0x44190b0d, 0x40d816ba, + 0xaca5c697, 0xa864db20, 0xa527fdf9, 0xa1e6e04e, 0xbfa1b04b, 0xbb60adfc, + 0xb6238b25, 0xb2e29692, 0x8aad2b2f, 0x8e6c3698, 0x832f1041, 0x87ee0df6, + 0x99a95df3, 0x9d684044, 0x902b669d, 0x94ea7b2a, 0xe0b41de7, 0xe4750050, + 0xe9362689, 0xedf73b3e, 0xf3b06b3b, 0xf771768c, 0xfa325055, 0xfef34de2, + 0xc6bcf05f, 0xc27dede8, 0xcf3ecb31, 0xcbffd686, 0xd5b88683, 0xd1799b34, + 0xdc3abded, 0xd8fba05a, 0x690ce0ee, 0x6dcdfd59, 0x608edb80, 0x644fc637, + 0x7a089632, 0x7ec98b85, 0x738aad5c, 0x774bb0eb, 0x4f040d56, 0x4bc510e1, + 0x46863638, 0x42472b8f, 0x5c007b8a, 0x58c1663d, 0x558240e4, 0x51435d53, + 0x251d3b9e, 0x21dc2629, 0x2c9f00f0, 0x285e1d47, 0x36194d42, 0x32d850f5, + 0x3f9b762c, 0x3b5a6b9b, 0x315d626, 0x7d4cb91, 0xa97ed48, 0xe56f0ff, + 0x1011a0fa, 0x14d0bd4d, 0x19939b94, 0x1d528623, 0xf12f560e, 0xf5ee4bb9, + 0xf8ad6d60, 0xfc6c70d7, 0xe22b20d2, 0xe6ea3d65, 0xeba91bbc, 0xef68060b, + 0xd727bbb6, 0xd3e6a601, 0xdea580d8, 0xda649d6f, 0xc423cd6a, 0xc0e2d0dd, + 0xcda1f604, 0xc960ebb3, 0xbd3e8d7e, 0xb9ff90c9, 0xb4bcb610, 0xb07daba7, + 0xae3afba2, 0xaafbe615, 0xa7b8c0cc, 0xa379dd7b, 0x9b3660c6, 0x9ff77d71, + 0x92b45ba8, 0x9675461f, 0x8832161a, 0x8cf30bad, 0x81b02d74, 0x857130c3, + 0x5d8a9099, 0x594b8d2e, 0x5408abf7, 0x50c9b640, 0x4e8ee645, 0x4a4ffbf2, + 0x470cdd2b, 0x43cdc09c, 0x7b827d21, 0x7f436096, 0x7200464f, 0x76c15bf8, + 0x68860bfd, 0x6c47164a, 0x61043093, 0x65c52d24, 0x119b4be9, 0x155a565e, + 0x18197087, 0x1cd86d30, 0x29f3d35, 0x65e2082, 0xb1d065b, 0xfdc1bec, + 0x3793a651, 0x3352bbe6, 0x3e119d3f, 0x3ad08088, 0x2497d08d, 0x2056cd3a, + 0x2d15ebe3, 0x29d4f654, 0xc5a92679, 0xc1683bce, 0xcc2b1d17, 0xc8ea00a0, + 0xd6ad50a5, 0xd26c4d12, 0xdf2f6bcb, 0xdbee767c, 0xe3a1cbc1, 0xe760d676, + 0xea23f0af, 0xeee2ed18, 0xf0a5bd1d, 0xf464a0aa, 0xf9278673, 0xfde69bc4, + 0x89b8fd09, 0x8d79e0be, 0x803ac667, 0x84fbdbd0, 0x9abc8bd5, 0x9e7d9662, + 0x933eb0bb, 0x97ffad0c, 0xafb010b1, 0xab710d06, 0xa6322bdf, 0xa2f33668, + 0xbcb4666d, 0xb8757bda, 0xb5365d03, 0xb1f740b4 +}; + + + + +/**************************************************************************** + * WebRtcIsac_GetCrc(...) + * + * This function returns a 32 bit CRC checksum of a bit stream + * + * Input: + * - bitstream : payload bitstream + * - len_bitstream_in_bytes : number of 8-bit words in the bit stream + * + * Output: + * - crc : checksum + * + * Return value : 0 - Ok + * -1 - Error + */ + +WebRtc_Word16 WebRtcIsac_GetCrc(const WebRtc_Word16* bitstream, + WebRtc_Word16 len_bitstream_in_bytes, + WebRtc_UWord32* crc) +{ + WebRtc_UWord8* bitstream_ptr_uw8; + WebRtc_UWord32 crc_state; + int byte_cntr; + int crc_tbl_indx; + + /* Sanity Check. */ + if (bitstream == NULL) { + return -1; + } + /* cast to UWord8 pointer */ + bitstream_ptr_uw8 = (WebRtc_UWord8 *)bitstream; + + /* initialize */ + crc_state = 0xFFFFFFFF; + + for (byte_cntr = 0; byte_cntr < len_bitstream_in_bytes; byte_cntr++) { + crc_tbl_indx = (WEBRTC_SPL_RSHIFT_U32(crc_state, 24) ^ + bitstream_ptr_uw8[byte_cntr]) & 0xFF; + crc_state = WEBRTC_SPL_LSHIFT_U32(crc_state, 8) ^ kCrcTable[crc_tbl_indx]; + } + + *crc = ~crc_state; + return 0; +} diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/crc.h.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/crc.h.svn-base new file mode 100644 index 0000000000..015127894b --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/crc.h.svn-base @@ -0,0 +1,46 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * crc.h + * + * Checksum functions + * + */ + +#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_CRC_H_ +#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_CRC_H_ + +#include "typedefs.h" + +/**************************************************************************** + * WebRtcIsac_GetCrc(...) + * + * This function returns a 32 bit CRC checksum of a bit stream + * + * Input: + * - encoded : payload bit stream + * - no_of_word8s : number of 8-bit words in the bit stream + * + * Output: + * - crc : checksum + * + * Return value : 0 - Ok + * -1 - Error + */ + +WebRtc_Word16 WebRtcIsac_GetCrc( + const WebRtc_Word16* encoded, + WebRtc_Word16 no_of_word8s, + WebRtc_UWord32* crc); + + + +#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_CRC_H_ */ diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/decode.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/decode.c.svn-base new file mode 100644 index 0000000000..25634b0a89 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/decode.c.svn-base @@ -0,0 +1,330 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * decode_B.c + * + * This file contains definition of funtions for decoding. + * Decoding of lower-band, including normal-decoding and RCU decoding. + * Decoding of upper-band, including 8-12 kHz, when the bandwidth is + * 0-12 kHz, and 8-16 kHz, when the bandwidth is 0-16 kHz. + * + */ + + +#include "codec.h" +#include "entropy_coding.h" +#include "pitch_estimator.h" +#include "bandwidth_estimator.h" +#include "structs.h" +#include "settings.h" + +#include +#include +#include + + +/* + * function to decode the bitstream + * returns the total number of bytes in the stream + */ +int +WebRtcIsac_DecodeLb( + float* signal_out, + ISACLBDecStruct* ISACdecLB_obj, + WebRtc_Word16* current_framesamples, + WebRtc_Word16 isRCUPayload) +{ + int k, model; + int len, err; + WebRtc_Word16 bandwidthInd; + + float LP_dec_float[FRAMESAMPLES_HALF]; + float HP_dec_float[FRAMESAMPLES_HALF]; + + double LPw[FRAMESAMPLES_HALF]; + double HPw[FRAMESAMPLES_HALF]; + double LPw_pf[FRAMESAMPLES_HALF]; + + double lo_filt_coef[(ORDERLO+1)*SUBFRAMES]; + double hi_filt_coef[(ORDERHI+1)*SUBFRAMES]; + + double real_f[FRAMESAMPLES_HALF]; + double imag_f[FRAMESAMPLES_HALF]; + + double PitchLags[4]; + double PitchGains[4]; + double AvgPitchGain; + WebRtc_Word16 PitchGains_Q12[4]; + WebRtc_Word16 AvgPitchGain_Q12; + + float gain; + + int frame_nb; /* counter */ + int frame_mode; /* 0 for 20ms and 30ms, 1 for 60ms */ + int processed_samples; + + (ISACdecLB_obj->bitstr_obj).W_upper = 0xFFFFFFFF; + (ISACdecLB_obj->bitstr_obj).streamval = 0; + (ISACdecLB_obj->bitstr_obj).stream_index = 0; + + len = 0; + + /* decode framelength and BW estimation - not used, + only for stream pointer*/ + err = WebRtcIsac_DecodeFrameLen(&ISACdecLB_obj->bitstr_obj, + current_framesamples); + if (err < 0) { // error check + return err; + } + + /* frame_mode: 0, or 1 */ + frame_mode = *current_framesamples/MAX_FRAMESAMPLES; + /* processed_samples: either 320 (20ms) or 480 (30, 60 ms) */ + processed_samples = *current_framesamples/(frame_mode+1); + + err = WebRtcIsac_DecodeSendBW(&ISACdecLB_obj->bitstr_obj, &bandwidthInd); + if (err < 0) { // error check + return err; + } + + /* one loop if it's one frame (20 or 30ms), 2 loops if 2 frames + bundled together (60ms) */ + for (frame_nb = 0; frame_nb <= frame_mode; frame_nb++) { + /* decode & dequantize pitch parameters */ + err = WebRtcIsac_DecodePitchGain(&(ISACdecLB_obj->bitstr_obj), + PitchGains_Q12); + if (err < 0) { // error check + return err; + } + + err = WebRtcIsac_DecodePitchLag(&ISACdecLB_obj->bitstr_obj, + PitchGains_Q12, PitchLags); + if (err < 0) { // error check + return err; + } + + AvgPitchGain_Q12 = (PitchGains_Q12[0] + PitchGains_Q12[1] + + PitchGains_Q12[2] + PitchGains_Q12[3])>>2; + + /* decode & dequantize FiltCoef */ + err = WebRtcIsac_DecodeLpc(&ISACdecLB_obj->bitstr_obj, + lo_filt_coef,hi_filt_coef, &model); + if (err < 0) { // error check + return err; + } + /* decode & dequantize spectrum */ + len = WebRtcIsac_DecodeSpecLb(&ISACdecLB_obj->bitstr_obj, + real_f, imag_f, AvgPitchGain_Q12); + if (len < 0) { // error check + return len; + } + + /* inverse transform */ + WebRtcIsac_Spec2time(real_f, imag_f, LPw, HPw, + &ISACdecLB_obj->fftstr_obj); + + /* convert PitchGains back to FLOAT for pitchfilter_post */ + for (k = 0; k < 4; k++) { + PitchGains[k] = ((float)PitchGains_Q12[k])/4096; + } + + if(isRCUPayload) + { + for (k = 0; k < 240; k++) { + LPw[k] *= RCU_TRANSCODING_SCALE_INVERSE; + HPw[k] *= RCU_TRANSCODING_SCALE_INVERSE; + } + } + + /* inverse pitch filter */ + WebRtcIsac_PitchfilterPost(LPw, LPw_pf, + &ISACdecLB_obj->pitchfiltstr_obj, PitchLags, PitchGains); + /* convert AvgPitchGain back to FLOAT for computation of gain */ + AvgPitchGain = ((float)AvgPitchGain_Q12)/4096; + gain = 1.0f - 0.45f * (float)AvgPitchGain; + + for (k = 0; k < FRAMESAMPLES_HALF; k++) { + /* reduce gain to compensate for pitch enhancer */ + LPw_pf[ k ] *= gain; + } + + if(isRCUPayload) + { + for (k = 0; k < FRAMESAMPLES_HALF; k++) { + /* compensation for transcoding gain changes*/ + LPw_pf[k] *= RCU_TRANSCODING_SCALE; + HPw[k] *= RCU_TRANSCODING_SCALE; + } + } + + /* perceptual post-filtering (using normalized lattice filter) */ + WebRtcIsac_NormLatticeFilterAr(ORDERLO, + ISACdecLB_obj->maskfiltstr_obj.PostStateLoF, + (ISACdecLB_obj->maskfiltstr_obj).PostStateLoG, + LPw_pf, lo_filt_coef, LP_dec_float); + WebRtcIsac_NormLatticeFilterAr(ORDERHI, + ISACdecLB_obj->maskfiltstr_obj.PostStateHiF, + (ISACdecLB_obj->maskfiltstr_obj).PostStateHiG, + HPw, hi_filt_coef, HP_dec_float); + + /* recombine the 2 bands */ + WebRtcIsac_FilterAndCombineFloat( LP_dec_float, HP_dec_float, + signal_out + frame_nb * processed_samples, + &ISACdecLB_obj->postfiltbankstr_obj); + } + + return len; +} + + +/* + * This decode function is called when the codec is operating in 16 kHz + * bandwidth to decode the upperband, i.e. 8-16 kHz. + * + * Contrary to lower-band, the upper-band (8-16 kHz) is not split in + * frequency, but split to 12 sub-frames, i.e. twice as lower-band. + */ +int +WebRtcIsac_DecodeUb16( + float* signal_out, + ISACUBDecStruct* ISACdecUB_obj, + WebRtc_Word16 isRCUPayload) +{ + int len, err; + + double halfFrameFirst[FRAMESAMPLES_HALF]; + double halfFrameSecond[FRAMESAMPLES_HALF]; + + double percepFilterParam[(UB_LPC_ORDER+1) * (SUBFRAMES<<1) + + (UB_LPC_ORDER+1)]; + + double real_f[FRAMESAMPLES_HALF]; + double imag_f[FRAMESAMPLES_HALF]; + + len = 0; + + /* decode & dequantize FiltCoef */ + memset(percepFilterParam, 0, sizeof(percepFilterParam)); + err = WebRtcIsac_DecodeInterpolLpcUb(&ISACdecUB_obj->bitstr_obj, + percepFilterParam, isac16kHz); + if (err < 0) { // error check + return err; + } + + /* decode & dequantize spectrum */ + len = WebRtcIsac_DecodeSpecUB16(&ISACdecUB_obj->bitstr_obj, real_f, + imag_f); + if (len < 0) { // error check + return len; + } + if(isRCUPayload) + { + int n; + for(n = 0; n < 240; n++) + { + real_f[n] *= RCU_TRANSCODING_SCALE_UB_INVERSE; + imag_f[n] *= RCU_TRANSCODING_SCALE_UB_INVERSE; + } + } + + /* inverse transform */ + WebRtcIsac_Spec2time(real_f, imag_f, halfFrameFirst, halfFrameSecond, + &ISACdecUB_obj->fftstr_obj); + + /* perceptual post-filtering (using normalized lattice filter) */ + WebRtcIsac_NormLatticeFilterAr(UB_LPC_ORDER, + ISACdecUB_obj->maskfiltstr_obj.PostStateLoF, + (ISACdecUB_obj->maskfiltstr_obj).PostStateLoG, halfFrameFirst, + &percepFilterParam[(UB_LPC_ORDER+1)], signal_out); + + WebRtcIsac_NormLatticeFilterAr(UB_LPC_ORDER, + ISACdecUB_obj->maskfiltstr_obj.PostStateLoF, + (ISACdecUB_obj->maskfiltstr_obj).PostStateLoG, halfFrameSecond, + &percepFilterParam[(UB_LPC_ORDER + 1) * SUBFRAMES + (UB_LPC_ORDER+1)], + &signal_out[FRAMESAMPLES_HALF]); + + return len; +} + +/* + * This decode function is called when the codec operates at 0-12 kHz + * bandwidth to decode the upperband, i.e. 8-12 kHz. + * + * At the encoder the upper-band is split into two band, 8-12 kHz & 12-16 + * kHz, and only 8-12 kHz is encoded. At the decoder, 8-12 kHz band is + * reconstructed and 12-16 kHz replaced with zeros. Then two bands + * are combined, to reconstruct the upperband 8-16 kHz. + */ +int +WebRtcIsac_DecodeUb12( + float* signal_out, + ISACUBDecStruct* ISACdecUB_obj, + WebRtc_Word16 isRCUPayload) +{ + int len, err; + + float LP_dec_float[FRAMESAMPLES_HALF]; + float HP_dec_float[FRAMESAMPLES_HALF]; + + double LPw[FRAMESAMPLES_HALF]; + double HPw[FRAMESAMPLES_HALF]; + + double percepFilterParam[(UB_LPC_ORDER+1)*SUBFRAMES]; + + double real_f[FRAMESAMPLES_HALF]; + double imag_f[FRAMESAMPLES_HALF]; + + len = 0; + + /* decode & dequantize FiltCoef */ + err = WebRtcIsac_DecodeInterpolLpcUb(&ISACdecUB_obj->bitstr_obj, + percepFilterParam, isac12kHz); + if(err < 0) { // error check + return err; + } + + /* decode & dequantize spectrum */ + len = WebRtcIsac_DecodeSpecUB12(&ISACdecUB_obj->bitstr_obj, + real_f, imag_f); + if(len < 0) { // error check + return len; + } + + if(isRCUPayload) + { + int n; + for(n = 0; n < 240; n++) + { + real_f[n] *= RCU_TRANSCODING_SCALE_UB_INVERSE; + imag_f[n] *= RCU_TRANSCODING_SCALE_UB_INVERSE; + } + } + + /* inverse transform */ + WebRtcIsac_Spec2time(real_f, imag_f, LPw, HPw, &ISACdecUB_obj->fftstr_obj); + + /* perceptual post-filtering (using normalized lattice filter) */ + WebRtcIsac_NormLatticeFilterAr(UB_LPC_ORDER, + ISACdecUB_obj->maskfiltstr_obj.PostStateLoF, + (ISACdecUB_obj->maskfiltstr_obj).PostStateLoG, LPw, + percepFilterParam, LP_dec_float); + + /* Zerro for upper-band */ + memset(HP_dec_float, 0, sizeof(float) * (FRAMESAMPLES_HALF)); + + /* recombine the 2 bands */ + WebRtcIsac_FilterAndCombineFloat(HP_dec_float, LP_dec_float, signal_out, + &ISACdecUB_obj->postfiltbankstr_obj); + + + + return len; +} diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/decode_bwe.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/decode_bwe.c.svn-base new file mode 100644 index 0000000000..cdac7fa8bf --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/decode_bwe.c.svn-base @@ -0,0 +1,88 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#include "structs.h" +#include "bandwidth_estimator.h" +#include "entropy_coding.h" +#include "codec.h" + + +int +WebRtcIsac_EstimateBandwidth( + BwEstimatorstr* bwest_str, + Bitstr* streamdata, + WebRtc_Word32 packet_size, + WebRtc_UWord16 rtp_seq_number, + WebRtc_UWord32 send_ts, + WebRtc_UWord32 arr_ts, + enum IsacSamplingRate encoderSampRate, + enum IsacSamplingRate decoderSampRate) +{ + WebRtc_Word16 index; + WebRtc_Word16 frame_samples; + WebRtc_UWord32 sendTimestampIn16kHz; + WebRtc_UWord32 arrivalTimestampIn16kHz; + WebRtc_UWord32 diffSendTime; + WebRtc_UWord32 diffArrivalTime; + int err; + + /* decode framelength and BW estimation */ + err = WebRtcIsac_DecodeFrameLen(streamdata, &frame_samples); + if(err < 0) // error check + { + return err; + } + err = WebRtcIsac_DecodeSendBW(streamdata, &index); + if(err < 0) // error check + { + return err; + } + + /* UPDATE ESTIMATES FROM OTHER SIDE */ + err = WebRtcIsac_UpdateUplinkBwImpl(bwest_str, index, encoderSampRate); + if(err < 0) + { + return err; + } + + // We like BWE to work at 16 kHz sampling rate, + // therefore, we have to change the timestamps accordingly. + // translate the send timestamp if required + diffSendTime = (WebRtc_UWord32)((WebRtc_UWord32)send_ts - + (WebRtc_UWord32)bwest_str->senderTimestamp); + bwest_str->senderTimestamp = send_ts; + + diffArrivalTime = (WebRtc_UWord32)((WebRtc_UWord32)arr_ts - + (WebRtc_UWord32)bwest_str->receiverTimestamp); + bwest_str->receiverTimestamp = arr_ts; + + if(decoderSampRate == kIsacSuperWideband) + { + diffArrivalTime = (WebRtc_UWord32)diffArrivalTime >> 1; + diffSendTime = (WebRtc_UWord32)diffSendTime >> 1; + } + // arrival timestamp in 16 kHz + arrivalTimestampIn16kHz = (WebRtc_UWord32)((WebRtc_UWord32) + bwest_str->prev_rec_arr_ts + (WebRtc_UWord32)diffArrivalTime); + // send timestamp in 16 kHz + sendTimestampIn16kHz = (WebRtc_UWord32)((WebRtc_UWord32) + bwest_str->prev_rec_send_ts + (WebRtc_UWord32)diffSendTime); + + err = WebRtcIsac_UpdateBandwidthEstimator(bwest_str, rtp_seq_number, + (frame_samples * 1000) / FS, sendTimestampIn16kHz, + arrivalTimestampIn16kHz, packet_size); + // error check + if(err < 0) + { + return err; + } + + return 0; +} diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/encode.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/encode.c.svn-base new file mode 100644 index 0000000000..75cd726507 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/encode.c.svn-base @@ -0,0 +1,1451 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * encode.c + * + * This file contains definition of funtions for encoding. + * Decoding of upper-band, including 8-12 kHz, when the bandwidth is + * 0-12 kHz, and 8-16 kHz, when the bandwidth is 0-16 kHz. + * + */ + +#include +#include + +#include "structs.h" +#include "codec.h" +#include "pitch_estimator.h" +#include "entropy_coding.h" +#include "arith_routines.h" +#include "pitch_gain_tables.h" +#include "pitch_lag_tables.h" +#include "spectrum_ar_model_tables.h" +#include "lpc_tables.h" +#include "lpc_analysis.h" +#include "bandwidth_estimator.h" +#include "lpc_shape_swb12_tables.h" +#include "lpc_shape_swb16_tables.h" +#include "lpc_gain_swb_tables.h" + + +#define UB_LOOKAHEAD 24 + +/* + Rate allocation tables of lower and upper-band bottleneck for + 12kHz & 16kHz bandwidth. + + 12 kHz bandwidth + ----------------- + The overall bottleneck of the coder is between 38 kbps and 45 kbps. We have + considered 7 enteries, uniformly distributed in this interval, i.e. 38, + 39.17, 40.33, 41.5, 42.67, 43.83 and 45. For every entery, the lower-band + and the upper-band bottlenecks are specified in + 'kLowerBandBitRate12' and 'kUpperBandBitRate12' + tables, respectively. E.g. the overall rate of 41.5 kbps corresponts to a + bottleneck of 31 kbps for lower-band and 27 kbps for upper-band. Given an + overall bottleneck of the codec, we use linear interpolation to get + lower-band and upper-band bottlenecks. + + 16 kHz bandwidth + ----------------- + The overall bottleneck of the coder is between 50 kbps and 56 kbps. We have + considered 7 enteries, uniformly distributed in this interval, i.e. 50, 51.2, + 52.4, 53.6, 54.8 and 56. For every entery, the lower-band and the upper-band + bottlenecks are specified in 'kLowerBandBitRate16' and + 'kUpperBandBitRate16' tables, respectively. E.g. the overall rate + of 53.6 kbps corresponts to a bottleneck of 32 kbps for lower-band and 30 + kbps for upper-band. Given an overall bottleneck of the codec, we use linear + interpolation to get lower-band and upper-band bottlenecks. + +*/ + +// 38 39.17 40.33 41.5 42.67 43.83 45 +static const WebRtc_Word16 kLowerBandBitRate12[7] = { + 29000, 30000, 30000, 31000, 31000, 32000, 32000}; +static const WebRtc_Word16 kUpperBandBitRate12[7] = { + 25000, 25000, 27000, 27000, 29000, 29000, 32000}; + +// 50 51.2 52.4 53.6 54.8 56 +static const WebRtc_Word16 kLowerBandBitRate16[6] = { + 31000, 31000, 32000, 32000, 32000, 32000}; +static const WebRtc_Word16 kUpperBandBitRate16[6] = { + 28000, 29000, 29000, 30000, 31000, 32000}; + +/****************************************************************************** + * WebRtcIsac_RateAllocation() + * Internal function to perform a rate-allocation for upper and lower-band, + * given a total rate. + * + * Input: + * - inRateBitPerSec : a total bottleneck in bits/sec. + * + * Output: + * - rateLBBitPerSec : a bottleneck allocated to the lower-band + * in bits/sec. + * - rateUBBitPerSec : a bottleneck allocated to the upper-band + * in bits/sec. + * + * Return value : 0 if rate allocation has been successful. + * -1 if failed to allocate rates. + */ + +WebRtc_Word16 +WebRtcIsac_RateAllocation( + WebRtc_Word32 inRateBitPerSec, + double* rateLBBitPerSec, + double* rateUBBitPerSec, + enum ISACBandwidth* bandwidthKHz) +{ + WebRtc_Word16 idx; + double idxD; + double idxErr; + if(inRateBitPerSec < 38000) + { + // If the given overall bottleneck is less than 38000 then + // then codec has to operate in wideband mode, i.e. 8 kHz + // bandwidth. + *rateLBBitPerSec = (WebRtc_Word16)((inRateBitPerSec > 32000)? + 32000:inRateBitPerSec); + *rateUBBitPerSec = 0; + *bandwidthKHz = isac8kHz; + } + else if((inRateBitPerSec >= 38000) && (inRateBitPerSec < 50000)) + { + // At a bottleneck between 38 and 50 kbps the codec is operating + // at 12 kHz bandwidth. Using xxxBandBitRate12[] to calculates + // upper/lower bottleneck + + // find the bottlenecks by linear interpolation + // step is (45000 - 38000)/6.0 we use the inverse of it. + const double stepSizeInv = 8.5714286e-4; + idxD = (inRateBitPerSec - 38000) * stepSizeInv; + idx = (idxD >= 6)? 6:((WebRtc_Word16)idxD); + idxErr = idxD - idx; + *rateLBBitPerSec = kLowerBandBitRate12[idx]; + *rateUBBitPerSec = kUpperBandBitRate12[idx]; + + if(idx < 6) + { + *rateLBBitPerSec += (WebRtc_Word16)(idxErr * + (kLowerBandBitRate12[idx + 1] - + kLowerBandBitRate12[idx])); + *rateUBBitPerSec += (WebRtc_Word16)(idxErr * + (kUpperBandBitRate12[idx + 1] - + kUpperBandBitRate12[idx])); + } + + *bandwidthKHz = isac12kHz; + } + else if((inRateBitPerSec >= 50000) && (inRateBitPerSec <= 56000)) + { + // A bottleneck between 50 and 56 kbps corresponds to bandwidth + // of 16 kHz. Using xxxBandBitRate16[] to calculates + // upper/lower bottleneck + + // find the bottlenecks by linear interpolation + // step is (56000 - 50000)/5 we use the inverse of it + const double stepSizeInv = 8.3333333e-4; + idxD = (inRateBitPerSec - 50000) * stepSizeInv; + idx = (idxD >= 5)? 5:((WebRtc_Word16)idxD); + idxErr = idxD - idx; + *rateLBBitPerSec = kLowerBandBitRate16[idx]; + *rateUBBitPerSec = kUpperBandBitRate16[idx]; + + if(idx < 5) + { + *rateLBBitPerSec += (WebRtc_Word16)(idxErr * + (kLowerBandBitRate16[idx + 1] - + kLowerBandBitRate16[idx])); + + *rateUBBitPerSec += (WebRtc_Word16)(idxErr * + (kUpperBandBitRate16[idx + 1] - + kUpperBandBitRate16[idx])); + } + + *bandwidthKHz = isac16kHz; + } + else + { + // Out-of-range botlteneck value. + return -1; + } + + // limit the values. + *rateLBBitPerSec = (*rateLBBitPerSec > 32000)? 32000:*rateLBBitPerSec; + *rateUBBitPerSec = (*rateUBBitPerSec > 32000)? 32000:*rateUBBitPerSec; + + return 0; +} + + + +int +WebRtcIsac_EncodeLb( + float* in, + ISACLBEncStruct* ISACencLB_obj, + WebRtc_Word16 codingMode, + WebRtc_Word16 bottleneckIndex) +{ + int stream_length = 0; + int err; + int k; + int iterCntr; + + double lofilt_coef[(ORDERLO+1)*SUBFRAMES]; + double hifilt_coef[(ORDERHI+1)*SUBFRAMES]; + float LP[FRAMESAMPLES_HALF]; + float HP[FRAMESAMPLES_HALF]; + + double LP_lookahead[FRAMESAMPLES_HALF]; + double HP_lookahead[FRAMESAMPLES_HALF]; + double LP_lookahead_pf[FRAMESAMPLES_HALF + QLOOKAHEAD]; + double LPw[FRAMESAMPLES_HALF]; + + double HPw[FRAMESAMPLES_HALF]; + double LPw_pf[FRAMESAMPLES_HALF]; + WebRtc_Word16 fre[FRAMESAMPLES_HALF]; /* Q7 */ + WebRtc_Word16 fim[FRAMESAMPLES_HALF]; /* Q7 */ + + double PitchLags[4]; + double PitchGains[4]; + WebRtc_Word16 PitchGains_Q12[4]; + WebRtc_Word16 AvgPitchGain_Q12; + + int frame_mode; /* 0 for 30ms, 1 for 60ms */ + int processed_samples, status = 0; + + double bits_gains; + int bmodel; + + transcode_obj transcodingParam; + double bytesLeftSpecCoding; + WebRtc_UWord16 payloadLimitBytes; + + /* copy new frame length and bottle neck rate only for the first + 10 ms data */ + if (ISACencLB_obj->buffer_index == 0) { + /* set the framelength for the next packet */ + ISACencLB_obj->current_framesamples = ISACencLB_obj->new_framelength; + } + /* frame_mode is 0 (30 ms) or 1 (60 ms) */ + frame_mode = ISACencLB_obj->current_framesamples/MAX_FRAMESAMPLES; + /* processed_samples: 480 (30, 60 ms) */ + processed_samples = ISACencLB_obj->current_framesamples/(frame_mode+1); + + /* buffer speech samples (by 10ms packet) until the framelength */ + /* is reached (30 or 60 ms) */ + /****************************************************************/ + + /* fill the buffer with 10ms input data */ + for (k = 0; k < FRAMESAMPLES_10ms; k++) { + ISACencLB_obj->data_buffer_float[k + ISACencLB_obj->buffer_index] = + in[k]; + } + + /* if buffersize is not equal to current framesize then increase index + and return. We do no encoding untill we have enough audio. */ + if (ISACencLB_obj->buffer_index + FRAMESAMPLES_10ms != processed_samples) { + ISACencLB_obj->buffer_index += FRAMESAMPLES_10ms; + return 0; + } + /* if buffer reached the right size, reset index and continue with + encoding the frame */ + ISACencLB_obj->buffer_index = 0; + + /* end of buffer function */ + /**************************/ + + /* encoding */ + /************/ + + if (frame_mode == 0 || ISACencLB_obj->frame_nb == 0 ) { + // This is to avoid Linux warnings until we change 'int' to 'Word32' + // at all places. + int intVar; + /* reset bitstream */ + ISACencLB_obj->bitstr_obj.W_upper = 0xFFFFFFFF; + ISACencLB_obj->bitstr_obj.streamval = 0; + ISACencLB_obj->bitstr_obj.stream_index = 0; + + if((codingMode == 0) && (frame_mode == 0) && + (ISACencLB_obj->enforceFrameSize == 0)) { + ISACencLB_obj->new_framelength = + WebRtcIsac_GetNewFrameLength(ISACencLB_obj->bottleneck, + ISACencLB_obj->current_framesamples); + } + + ISACencLB_obj->s2nr = WebRtcIsac_GetSnr( + ISACencLB_obj->bottleneck, ISACencLB_obj->current_framesamples); + + /* encode frame length */ + status = WebRtcIsac_EncodeFrameLen( + ISACencLB_obj->current_framesamples, &ISACencLB_obj->bitstr_obj); + if (status < 0) { + /* Wrong frame size */ + return status; + } + /* Save framelength for multiple packets memory */ + ISACencLB_obj->SaveEnc_obj.framelength = + ISACencLB_obj->current_framesamples; + + /* To be used for Redundant Coding */ + ISACencLB_obj->lastBWIdx = bottleneckIndex; + intVar = (int)bottleneckIndex; + WebRtcIsac_EncodeReceiveBw(&intVar, &ISACencLB_obj->bitstr_obj); + } + + /* split signal in two bands */ + WebRtcIsac_SplitAndFilterFloat(ISACencLB_obj->data_buffer_float, LP, HP, + LP_lookahead, HP_lookahead, &ISACencLB_obj->prefiltbankstr_obj ); + + /* estimate pitch parameters and pitch-filter lookahead signal */ + WebRtcIsac_PitchAnalysis(LP_lookahead, LP_lookahead_pf, + &ISACencLB_obj->pitchanalysisstr_obj, PitchLags, PitchGains); + + /* encode in FIX Q12 */ + + /* convert PitchGain to Fixed point */ + for (k=0;kframe_nb == 0) + { + ISACencLB_obj->SaveEnc_obj.startIdx = 0; + } else { + ISACencLB_obj->SaveEnc_obj.startIdx = 1; + } + + /* quantize & encode pitch parameters */ + WebRtcIsac_EncodePitchGain(PitchGains_Q12, &ISACencLB_obj->bitstr_obj, + &ISACencLB_obj->SaveEnc_obj); + WebRtcIsac_EncodePitchLag(PitchLags, PitchGains_Q12, + &ISACencLB_obj->bitstr_obj, &ISACencLB_obj->SaveEnc_obj); + + AvgPitchGain_Q12 = (PitchGains_Q12[0] + PitchGains_Q12[1] + + PitchGains_Q12[2] + PitchGains_Q12[3])>>2; + + /* find coefficients for perceptual pre-filters */ + WebRtcIsac_GetLpcCoefLb(LP_lookahead_pf, HP_lookahead, + &ISACencLB_obj->maskfiltstr_obj, ISACencLB_obj->s2nr, + PitchGains_Q12, lofilt_coef, hifilt_coef); + + /* code LPC model and shape - gains not quantized yet */ + WebRtcIsac_EncodeLpcLb(lofilt_coef, hifilt_coef, &bmodel, &bits_gains, + &ISACencLB_obj->bitstr_obj, &ISACencLB_obj->SaveEnc_obj); + + /* convert PitchGains back to FLOAT for pitchfilter_pre */ + for (k = 0; k < 4; k++) { + PitchGains[k] = ((float)PitchGains_Q12[k])/4096; + } + + /* Store the state of arithmetic coder before coding LPC gains */ + transcodingParam.W_upper = ISACencLB_obj->bitstr_obj.W_upper; + transcodingParam.stream_index = ISACencLB_obj->bitstr_obj.stream_index; + transcodingParam.streamval = ISACencLB_obj->bitstr_obj.streamval; + transcodingParam.stream[0] = ISACencLB_obj->bitstr_obj.stream[ + ISACencLB_obj->bitstr_obj.stream_index - 2]; + transcodingParam.stream[1] = ISACencLB_obj->bitstr_obj.stream[ + ISACencLB_obj->bitstr_obj.stream_index - 1]; + transcodingParam.stream[2] = ISACencLB_obj->bitstr_obj.stream[ + ISACencLB_obj->bitstr_obj.stream_index]; + + /* Store LPC Gains before encoding them */ + for(k = 0; k < SUBFRAMES; k++) { + transcodingParam.loFiltGain[k] = lofilt_coef[(LPC_LOBAND_ORDER+1)*k]; + transcodingParam.hiFiltGain[k] = hifilt_coef[(LPC_HIBAND_ORDER+1)*k]; + } + + /* Code gains */ + WebRtcIsac_EncodeLpcGainLb(lofilt_coef, hifilt_coef, bmodel, + &ISACencLB_obj->bitstr_obj, &ISACencLB_obj->SaveEnc_obj); + + /* Get the correct value for the payload limit and calculate the + number of bytes left for coding the spectrum.*/ + if((frame_mode == 1) && (ISACencLB_obj->frame_nb == 0)) { + /* It is a 60ms and we are in the first 30ms then the limit at + this point should be half of the assigned value */ + payloadLimitBytes = ISACencLB_obj->payloadLimitBytes60 >> 1; + } + else if (frame_mode == 0) { + /* It is a 30ms frame */ + /* Subract 3 because termination process may add 3 bytes */ + payloadLimitBytes = ISACencLB_obj->payloadLimitBytes30 - 3; + } else { + /* This is the second half of a 60ms frame. */ + /* Subract 3 because termination process may add 3 bytes */ + payloadLimitBytes = ISACencLB_obj->payloadLimitBytes60 - 3; + } + bytesLeftSpecCoding = payloadLimitBytes - transcodingParam.stream_index; + + /* perceptual pre-filtering (using normalized lattice filter) */ + /* low-band filtering */ + WebRtcIsac_NormLatticeFilterMa(ORDERLO, + ISACencLB_obj->maskfiltstr_obj.PreStateLoF, + ISACencLB_obj->maskfiltstr_obj.PreStateLoG, LP, lofilt_coef, LPw); + /* high-band filtering */ + WebRtcIsac_NormLatticeFilterMa(ORDERHI, + ISACencLB_obj->maskfiltstr_obj.PreStateHiF, + ISACencLB_obj->maskfiltstr_obj.PreStateHiG, HP, hifilt_coef, HPw); + + + /* pitch filter */ + WebRtcIsac_PitchfilterPre(LPw, LPw_pf, &ISACencLB_obj->pitchfiltstr_obj, + PitchLags, PitchGains); + + /* transform */ + WebRtcIsac_Time2Spec(LPw_pf, HPw, fre, fim, &ISACencLB_obj->fftstr_obj); + + + /* Save data for multiple packets memory */ + for (k = 0; k < FRAMESAMPLES_HALF; k++) { + ISACencLB_obj->SaveEnc_obj.fre[k + + ISACencLB_obj->SaveEnc_obj.startIdx*FRAMESAMPLES_HALF] = fre[k]; + ISACencLB_obj->SaveEnc_obj.fim[k + + ISACencLB_obj->SaveEnc_obj.startIdx*FRAMESAMPLES_HALF] = fim[k]; + } + ISACencLB_obj->SaveEnc_obj.AvgPitchGain[ + ISACencLB_obj->SaveEnc_obj.startIdx] = AvgPitchGain_Q12; + + /* quantization and lossless coding */ + err = WebRtcIsac_EncodeSpecLb(fre, fim, &ISACencLB_obj->bitstr_obj, + AvgPitchGain_Q12); + if ((err < 0) && (err != -ISAC_DISALLOWED_BITSTREAM_LENGTH)) { + /* There has been an error but it was not too large payload + (we can cure too large payload) */ + if (frame_mode == 1 && ISACencLB_obj->frame_nb == 1) { + /* If this is the second 30ms of a 60ms frame reset + this such that in the next call encoder starts fresh. */ + ISACencLB_obj->frame_nb = 0; + } + return err; + } + iterCntr = 0; + while((ISACencLB_obj->bitstr_obj.stream_index > payloadLimitBytes) || + (err == -ISAC_DISALLOWED_BITSTREAM_LENGTH)) { + double bytesSpecCoderUsed; + double transcodeScale; + + if(iterCntr >= MAX_PAYLOAD_LIMIT_ITERATION) { + /* We were not able to limit the payload size */ + if((frame_mode == 1) && (ISACencLB_obj->frame_nb == 0)) { + /* This was the first 30ms of a 60ms frame. Although + the payload is larger than it should be but we let + the second 30ms be encoded. Maybe together we + won't exceed the limit. */ + ISACencLB_obj->frame_nb = 1; + return 0; + } else if((frame_mode == 1) && (ISACencLB_obj->frame_nb == 1)) { + ISACencLB_obj->frame_nb = 0; + } + + if(err != -ISAC_DISALLOWED_BITSTREAM_LENGTH) { + return -ISAC_PAYLOAD_LARGER_THAN_LIMIT; + } else { + return status; + } + } + + if(err == -ISAC_DISALLOWED_BITSTREAM_LENGTH) { + bytesSpecCoderUsed = STREAM_SIZE_MAX; + // being coservative + transcodeScale = bytesLeftSpecCoding / bytesSpecCoderUsed * 0.5; + } else { + bytesSpecCoderUsed = ISACencLB_obj->bitstr_obj.stream_index - + transcodingParam.stream_index; + transcodeScale = bytesLeftSpecCoding / bytesSpecCoderUsed; + } + + /* To be safe, we reduce the scale depending on + the number of iterations. */ + transcodeScale *= (1.0 - (0.9 * (double)iterCntr / + (double)MAX_PAYLOAD_LIMIT_ITERATION)); + + /* Scale the LPC Gains */ + for (k = 0; k < SUBFRAMES; k++) { + lofilt_coef[(LPC_LOBAND_ORDER+1) * k] = + transcodingParam.loFiltGain[k] * transcodeScale; + hifilt_coef[(LPC_HIBAND_ORDER+1) * k] = + transcodingParam.hiFiltGain[k] * transcodeScale; + transcodingParam.loFiltGain[k] = + lofilt_coef[(LPC_LOBAND_ORDER+1) * k]; + transcodingParam.hiFiltGain[k] = + hifilt_coef[(LPC_HIBAND_ORDER+1) * k]; + } + + /* Scale DFT coefficients */ + for (k = 0; k < FRAMESAMPLES_HALF; k++) { + fre[k] = (WebRtc_Word16)(fre[k] * transcodeScale); + fim[k] = (WebRtc_Word16)(fim[k] * transcodeScale); + } + + /* Save data for multiple packets memory */ + for (k = 0; k < FRAMESAMPLES_HALF; k++) { + ISACencLB_obj->SaveEnc_obj.fre[k + + ISACencLB_obj->SaveEnc_obj.startIdx * FRAMESAMPLES_HALF] = + fre[k]; + ISACencLB_obj->SaveEnc_obj.fim[k + + ISACencLB_obj->SaveEnc_obj.startIdx * FRAMESAMPLES_HALF] = + fim[k]; + } + + /* Re-store the state of arithmetic coder before coding LPC gains */ + ISACencLB_obj->bitstr_obj.W_upper = transcodingParam.W_upper; + ISACencLB_obj->bitstr_obj.stream_index = transcodingParam.stream_index; + ISACencLB_obj->bitstr_obj.streamval = transcodingParam.streamval; + ISACencLB_obj->bitstr_obj.stream[transcodingParam.stream_index - 2] = + transcodingParam.stream[0]; + ISACencLB_obj->bitstr_obj.stream[transcodingParam.stream_index - 1] = + transcodingParam.stream[1]; + ISACencLB_obj->bitstr_obj.stream[transcodingParam.stream_index] = + transcodingParam.stream[2]; + + /* Code gains */ + WebRtcIsac_EncodeLpcGainLb(lofilt_coef, hifilt_coef, bmodel, + &ISACencLB_obj->bitstr_obj, &ISACencLB_obj->SaveEnc_obj); + + /* Update the number of bytes left for encoding the spectrum */ + bytesLeftSpecCoding = payloadLimitBytes - + transcodingParam.stream_index; + + /* Encode the spectrum */ + err = WebRtcIsac_EncodeSpecLb(fre, fim, &ISACencLB_obj->bitstr_obj, + AvgPitchGain_Q12); + if((err < 0) && (err != -ISAC_DISALLOWED_BITSTREAM_LENGTH)) { + /* There has been an error but it was not too large + payload (we can cure too large payload) */ + if (frame_mode == 1 && ISACencLB_obj->frame_nb == 1) { + /* If this is the second 30ms of a 60ms frame reset + this such that in the next call encoder starts fresh. */ + ISACencLB_obj->frame_nb = 0; + } + return err; + } + iterCntr++; + } + + /* i.e. 60 ms framesize and just processed the first 30ms, */ + /* go back to main function to buffer the other 30ms speech frame */ + if (frame_mode == 1) + { + if(ISACencLB_obj->frame_nb == 0) + { + ISACencLB_obj->frame_nb = 1; + return 0; + } + else if(ISACencLB_obj->frame_nb == 1) + { + ISACencLB_obj->frame_nb = 0; + /* also update the framelength for next packet, + in Adaptive mode only */ + if (codingMode == 0 && (ISACencLB_obj->enforceFrameSize == 0)) + { + ISACencLB_obj->new_framelength = + WebRtcIsac_GetNewFrameLength(ISACencLB_obj->bottleneck, + ISACencLB_obj->current_framesamples); + } + } + } + else + { + ISACencLB_obj->frame_nb = 0; + } + + /* complete arithmetic coding */ + stream_length = WebRtcIsac_EncTerminate(&ISACencLB_obj->bitstr_obj); + + return stream_length; +} + +int +WebRtcIsac_EncodeUb16( + float* in, + ISACUBEncStruct* ISACencUB_obj, + WebRtc_Word32 jitterInfo) +{ + int err; + int k; + + double lpcVecs[UB_LPC_ORDER * UB16_LPC_VEC_PER_FRAME]; + double percepFilterParams[(1 + UB_LPC_ORDER) * (SUBFRAMES<<1) + + (1 + UB_LPC_ORDER)]; + + double LP_lookahead[FRAMESAMPLES]; + WebRtc_Word16 fre[FRAMESAMPLES_HALF]; /* Q7 */ + WebRtc_Word16 fim[FRAMESAMPLES_HALF]; /* Q7 */ + + int status = 0; + + double varscale[2]; + double corr[SUBFRAMES<<1][UB_LPC_ORDER + 1]; + double lpcGains[SUBFRAMES<<1]; + transcode_obj transcodingParam; + double bytesLeftSpecCoding; + WebRtc_UWord16 payloadLimitBytes; + WebRtc_UWord16 iterCntr; + double s2nr; + + /* buffer speech samples (by 10ms packet) until the framelength is */ + /* reached (30 or 60 ms) */ + /*********************************************************************/ + + /* fill the buffer with 10ms input data */ + for (k = 0; k < FRAMESAMPLES_10ms; k++) { + ISACencUB_obj->data_buffer_float[k + ISACencUB_obj->buffer_index] = + in[k]; + } + + /* if buffersize is not equal to current framesize, and end of file is + not reached yet, we don't do encoding unless we have the whole frame */ + if (ISACencUB_obj->buffer_index + FRAMESAMPLES_10ms < FRAMESAMPLES) { + ISACencUB_obj->buffer_index += FRAMESAMPLES_10ms; + return 0; + } + + /* end of buffer function */ + /**************************/ + + /* encoding */ + /************/ + + /* reset bitstream */ + ISACencUB_obj->bitstr_obj.W_upper = 0xFFFFFFFF; + ISACencUB_obj->bitstr_obj.streamval = 0; + ISACencUB_obj->bitstr_obj.stream_index = 0; + + /* bandwidth estimation and coding */ + /* To be used for Redundant Coding */ + WebRtcIsac_EncodeJitterInfo(jitterInfo, &ISACencUB_obj->bitstr_obj); + + status = WebRtcIsac_EncodeBandwidth(isac16kHz, + &ISACencUB_obj->bitstr_obj); + if (status < 0) { + return status; + } + + s2nr = WebRtcIsac_GetSnr(ISACencUB_obj->bottleneck, + FRAMESAMPLES); + + memcpy(lpcVecs, ISACencUB_obj->lastLPCVec, UB_LPC_ORDER * sizeof(double)); + + for (k = 0; k < FRAMESAMPLES; k++) { + LP_lookahead[k] = ISACencUB_obj->data_buffer_float[UB_LOOKAHEAD + k]; + } + + /* find coefficients for perceptual pre-filters */ + WebRtcIsac_GetLpcCoefUb(LP_lookahead, &ISACencUB_obj->maskfiltstr_obj, + &lpcVecs[UB_LPC_ORDER], corr, varscale, isac16kHz); + + memcpy(ISACencUB_obj->lastLPCVec, + &lpcVecs[(UB16_LPC_VEC_PER_FRAME - 1) * (UB_LPC_ORDER)], + sizeof(double) * UB_LPC_ORDER); + + /* code LPC model and shape - gains not quantized yet */ + WebRtcIsac_EncodeLpcUB(lpcVecs, &ISACencUB_obj->bitstr_obj, + percepFilterParams, isac16kHz, &ISACencUB_obj->SaveEnc_obj); + + + // the first set of lpc parameters are from the last sub-frame of + // the previous frame. so we don't care about them + WebRtcIsac_GetLpcGain(s2nr, &percepFilterParams[UB_LPC_ORDER + 1], + (SUBFRAMES<<1), lpcGains, corr, varscale); + + /* Store the state of arithmetic coder before coding LPC gains */ + transcodingParam.stream_index = ISACencUB_obj->bitstr_obj.stream_index; + transcodingParam.W_upper = ISACencUB_obj->bitstr_obj.W_upper; + transcodingParam.streamval = ISACencUB_obj->bitstr_obj.streamval; + transcodingParam.stream[0] = ISACencUB_obj->bitstr_obj.stream[ + ISACencUB_obj->bitstr_obj.stream_index - 2]; + transcodingParam.stream[1] = ISACencUB_obj->bitstr_obj.stream[ + ISACencUB_obj->bitstr_obj.stream_index - 1]; + transcodingParam.stream[2] = ISACencUB_obj->bitstr_obj.stream[ + ISACencUB_obj->bitstr_obj.stream_index]; + + /* Store LPC Gains before encoding them */ + for(k = 0; k < SUBFRAMES; k++) { + transcodingParam.loFiltGain[k] = lpcGains[k]; + transcodingParam.hiFiltGain[k] = lpcGains[SUBFRAMES + k]; + } + + // Store the gains for multiple encoding + memcpy(ISACencUB_obj->SaveEnc_obj.lpcGain, lpcGains, (SUBFRAMES << 1) * sizeof(double)); + + WebRtcIsac_EncodeLpcGainUb(lpcGains, &ISACencUB_obj->bitstr_obj, + ISACencUB_obj->SaveEnc_obj.lpcGainIndex); + WebRtcIsac_EncodeLpcGainUb(&lpcGains[SUBFRAMES], &ISACencUB_obj->bitstr_obj, + &ISACencUB_obj->SaveEnc_obj.lpcGainIndex[SUBFRAMES]); + + /* Get the correct value for the payload limit and calculate the number of + bytes left for coding the spectrum. It is a 30ms frame + Subract 3 because termination process may add 3 bytes */ + payloadLimitBytes = ISACencUB_obj->maxPayloadSizeBytes - + ISACencUB_obj->numBytesUsed - 3; + bytesLeftSpecCoding = payloadLimitBytes - + ISACencUB_obj->bitstr_obj.stream_index; + + for (k = 0; k < (SUBFRAMES<<1); k++) { + percepFilterParams[k*(UB_LPC_ORDER + 1) + (UB_LPC_ORDER + 1)] = + lpcGains[k]; + } + + /* perceptual pre-filtering (using normalized lattice filter) */ + /* first half-frame filtering */ + WebRtcIsac_NormLatticeFilterMa(UB_LPC_ORDER, + ISACencUB_obj->maskfiltstr_obj.PreStateLoF, + ISACencUB_obj->maskfiltstr_obj.PreStateLoG, + &ISACencUB_obj->data_buffer_float[0], + &percepFilterParams[UB_LPC_ORDER + 1], + &LP_lookahead[0]); + + /* Second half-frame filtering */ + WebRtcIsac_NormLatticeFilterMa(UB_LPC_ORDER, + ISACencUB_obj->maskfiltstr_obj.PreStateLoF, + ISACencUB_obj->maskfiltstr_obj.PreStateLoG, + &ISACencUB_obj->data_buffer_float[FRAMESAMPLES_HALF], + &percepFilterParams[(UB_LPC_ORDER + 1) + SUBFRAMES * + (UB_LPC_ORDER + 1)], &LP_lookahead[FRAMESAMPLES_HALF]); + + WebRtcIsac_Time2Spec(&LP_lookahead[0], &LP_lookahead[FRAMESAMPLES_HALF], + fre, fim, &ISACencUB_obj->fftstr_obj); + + //Store FFT coefficients for multiple encoding + memcpy(&ISACencUB_obj->SaveEnc_obj.realFFT, fre, + FRAMESAMPLES_HALF * sizeof(WebRtc_Word16)); + + memcpy(&ISACencUB_obj->SaveEnc_obj.imagFFT, fim, + FRAMESAMPLES_HALF * sizeof(WebRtc_Word16)); + + // Prepare the audio buffer for the next packet + // move the last 3 ms to the beginning of the buffer + memcpy(ISACencUB_obj->data_buffer_float, + &ISACencUB_obj->data_buffer_float[FRAMESAMPLES], + LB_TOTAL_DELAY_SAMPLES * sizeof(float)); + // start writing with 3 ms delay to compensate for the delay + // of the lower-band. + ISACencUB_obj->buffer_index = LB_TOTAL_DELAY_SAMPLES; + + // Save the bit-stream object at this point for FEC. + memcpy(&ISACencUB_obj->SaveEnc_obj.bitStreamObj, + &ISACencUB_obj->bitstr_obj, sizeof(Bitstr)); + + /* quantization and lossless coding */ + err = WebRtcIsac_EncodeSpecUB16(fre, fim, &ISACencUB_obj->bitstr_obj); + if ((err < 0) && (err != -ISAC_DISALLOWED_BITSTREAM_LENGTH)) { + return err; + } + + iterCntr = 0; + while((ISACencUB_obj->bitstr_obj.stream_index > payloadLimitBytes) || + (err == -ISAC_DISALLOWED_BITSTREAM_LENGTH)) { + double bytesSpecCoderUsed; + double transcodeScale; + + if (iterCntr >= MAX_PAYLOAD_LIMIT_ITERATION) { + /* We were not able to limit the payload size */ + return -ISAC_PAYLOAD_LARGER_THAN_LIMIT; + } + + if (err == -ISAC_DISALLOWED_BITSTREAM_LENGTH) { + bytesSpecCoderUsed = STREAM_SIZE_MAX; + // being conservative + transcodeScale = bytesLeftSpecCoding / bytesSpecCoderUsed * 0.5; + } else { + bytesSpecCoderUsed = ISACencUB_obj->bitstr_obj.stream_index - + transcodingParam.stream_index; + transcodeScale = bytesLeftSpecCoding / bytesSpecCoderUsed; + } + + /* To be safe, we reduce the scale depending on the + number of iterations. */ + transcodeScale *= (1.0 - (0.9 * (double)iterCntr/ + (double)MAX_PAYLOAD_LIMIT_ITERATION)); + + /* Scale the LPC Gains */ + for (k = 0; k < SUBFRAMES; k++) { + transcodingParam.loFiltGain[k] *= transcodeScale; + transcodingParam.hiFiltGain[k] *= transcodeScale; + } + + /* Scale DFT coefficients */ + for (k = 0; k < FRAMESAMPLES_HALF; k++) { + fre[k] = (WebRtc_Word16)(fre[k] * transcodeScale + 0.5); + fim[k] = (WebRtc_Word16)(fim[k] * transcodeScale + 0.5); + } + + //Store FFT coefficients for multiple encoding + memcpy(&ISACencUB_obj->SaveEnc_obj.realFFT, fre, + FRAMESAMPLES_HALF * sizeof(WebRtc_Word16)); + + memcpy(&ISACencUB_obj->SaveEnc_obj.imagFFT, fim, + FRAMESAMPLES_HALF * sizeof(WebRtc_Word16)); + + + /* Store the state of arithmetic coder before coding LPC gains */ + ISACencUB_obj->bitstr_obj.W_upper = transcodingParam.W_upper; + + ISACencUB_obj->bitstr_obj.stream_index = transcodingParam.stream_index; + + ISACencUB_obj->bitstr_obj.streamval = transcodingParam.streamval; + + ISACencUB_obj->bitstr_obj.stream[transcodingParam.stream_index - 2] = + transcodingParam.stream[0]; + + ISACencUB_obj->bitstr_obj.stream[transcodingParam.stream_index - 1] = + transcodingParam.stream[1]; + + ISACencUB_obj->bitstr_obj.stream[transcodingParam.stream_index] = + transcodingParam.stream[2]; + + // Store the gains for multiple encoding + memcpy(ISACencUB_obj->SaveEnc_obj.lpcGain, lpcGains, + (SUBFRAMES << 1) * sizeof(double)); + + WebRtcIsac_EncodeLpcGainUb(transcodingParam.loFiltGain, + &ISACencUB_obj->bitstr_obj, + ISACencUB_obj->SaveEnc_obj.lpcGainIndex); + WebRtcIsac_EncodeLpcGainUb(transcodingParam.hiFiltGain, + &ISACencUB_obj->bitstr_obj, + &ISACencUB_obj->SaveEnc_obj.lpcGainIndex[SUBFRAMES]); + + /* Update the number of bytes left for encoding the spectrum */ + bytesLeftSpecCoding = payloadLimitBytes - + ISACencUB_obj->bitstr_obj.stream_index; + + // Save the bit-stream object at this point for FEC. + memcpy(&ISACencUB_obj->SaveEnc_obj.bitStreamObj, + &ISACencUB_obj->bitstr_obj, sizeof(Bitstr)); + + /* Encode the spectrum */ + err = WebRtcIsac_EncodeSpecUB16(fre, fim, &ISACencUB_obj->bitstr_obj); + if ((err < 0) && (err != -ISAC_DISALLOWED_BITSTREAM_LENGTH)) { + /* There has been an error but it was not too large payload + (we can cure too large payload) */ + return err; + } + iterCntr++; + } + + /* complete arithmetic coding */ + return WebRtcIsac_EncTerminate(&ISACencUB_obj->bitstr_obj); +} + + +int +WebRtcIsac_EncodeUb12( + float* in, + ISACUBEncStruct* ISACencUB_obj, + WebRtc_Word32 jitterInfo) +{ + int err; + int k; + int iterCntr; + + double lpcVecs[UB_LPC_ORDER * UB_LPC_VEC_PER_FRAME]; + + double percepFilterParams[(1 + UB_LPC_ORDER) * SUBFRAMES]; + float LP[FRAMESAMPLES_HALF]; + float HP[FRAMESAMPLES_HALF]; + + double LP_lookahead[FRAMESAMPLES_HALF]; + double HP_lookahead[FRAMESAMPLES_HALF]; + double LPw[FRAMESAMPLES_HALF]; + + double HPw[FRAMESAMPLES_HALF]; + WebRtc_Word16 fre[FRAMESAMPLES_HALF]; /* Q7 */ + WebRtc_Word16 fim[FRAMESAMPLES_HALF]; /* Q7 */ + + int status = 0; + + double varscale[1]; + + double corr[UB_LPC_GAIN_DIM][UB_LPC_ORDER + 1]; + double lpcGains[SUBFRAMES]; + transcode_obj transcodingParam; + double bytesLeftSpecCoding; + WebRtc_UWord16 payloadLimitBytes; + double s2nr; + + /* buffer speech samples (by 10ms packet) until the framelength is */ + /* reached (30 or 60 ms) */ + /********************************************************************/ + + /* fill the buffer with 10ms input data */ + for (k=0; kdata_buffer_float[k + ISACencUB_obj->buffer_index] = + in[k]; + } + + /* if buffer-size is not equal to current frame-size then increase the + index and return. We do the encoding when we have enough audio. */ + if (ISACencUB_obj->buffer_index + FRAMESAMPLES_10ms < FRAMESAMPLES) { + ISACencUB_obj->buffer_index += FRAMESAMPLES_10ms; + return 0; + } + /* if buffer reached the right size, reset index and continue + with encoding the frame */ + ISACencUB_obj->buffer_index = 0; + + /* end of buffer function */ + /**************************/ + + /* encoding */ + /************/ + + /* reset bitstream */ + ISACencUB_obj->bitstr_obj.W_upper = 0xFFFFFFFF; + ISACencUB_obj->bitstr_obj.streamval = 0; + ISACencUB_obj->bitstr_obj.stream_index = 0; + + /* bandwidth estimation and coding */ + /* To be used for Redundant Coding */ + WebRtcIsac_EncodeJitterInfo(jitterInfo, &ISACencUB_obj->bitstr_obj); + + status = WebRtcIsac_EncodeBandwidth(isac12kHz, + &ISACencUB_obj->bitstr_obj); + if (status < 0) { + return status; + } + + + s2nr = WebRtcIsac_GetSnr(ISACencUB_obj->bottleneck, + FRAMESAMPLES); + + /* split signal in two bands */ + WebRtcIsac_SplitAndFilterFloat(ISACencUB_obj->data_buffer_float, HP, LP, + HP_lookahead, LP_lookahead, &ISACencUB_obj->prefiltbankstr_obj); + + /* find coefficients for perceptual pre-filters */ + WebRtcIsac_GetLpcCoefUb(LP_lookahead, &ISACencUB_obj->maskfiltstr_obj, + lpcVecs, corr, varscale, isac12kHz); + + /* code LPC model and shape - gains not quantized yet */ + WebRtcIsac_EncodeLpcUB(lpcVecs, &ISACencUB_obj->bitstr_obj, + percepFilterParams, isac12kHz, &ISACencUB_obj->SaveEnc_obj); + + WebRtcIsac_GetLpcGain(s2nr, percepFilterParams, SUBFRAMES, lpcGains, + corr, varscale); + + /* Store the state of arithmetic coder before coding LPC gains */ + transcodingParam.W_upper = ISACencUB_obj->bitstr_obj.W_upper; + + transcodingParam.stream_index = ISACencUB_obj->bitstr_obj.stream_index; + + transcodingParam.streamval = ISACencUB_obj->bitstr_obj.streamval; + + transcodingParam.stream[0] = ISACencUB_obj->bitstr_obj.stream[ + ISACencUB_obj->bitstr_obj.stream_index - 2]; + + transcodingParam.stream[1] = ISACencUB_obj->bitstr_obj.stream[ + ISACencUB_obj->bitstr_obj.stream_index - 1]; + + transcodingParam.stream[2] = ISACencUB_obj->bitstr_obj.stream[ + ISACencUB_obj->bitstr_obj.stream_index]; + + /* Store LPC Gains before encoding them */ + for(k = 0; k < SUBFRAMES; k++) { + transcodingParam.loFiltGain[k] = lpcGains[k]; + } + + // Store the gains for multiple encoding + memcpy(ISACencUB_obj->SaveEnc_obj.lpcGain, lpcGains, SUBFRAMES * + sizeof(double)); + + WebRtcIsac_EncodeLpcGainUb(lpcGains, &ISACencUB_obj->bitstr_obj, + ISACencUB_obj->SaveEnc_obj.lpcGainIndex); + + for(k = 0; k < SUBFRAMES; k++) { + percepFilterParams[k*(UB_LPC_ORDER + 1)] = lpcGains[k]; + } + + /* perceptual pre-filtering (using normalized lattice filter) */ + /* low-band filtering */ + WebRtcIsac_NormLatticeFilterMa(UB_LPC_ORDER, + ISACencUB_obj->maskfiltstr_obj.PreStateLoF, + ISACencUB_obj->maskfiltstr_obj.PreStateLoG, LP, percepFilterParams, + LPw); + + /* Get the correct value for the payload limit and calculate the number + of bytes left for coding the spectrum. It is a 30ms frame Subract 3 + because termination process may add 3 bytes */ + payloadLimitBytes = ISACencUB_obj->maxPayloadSizeBytes - + ISACencUB_obj->numBytesUsed - 3; + bytesLeftSpecCoding = payloadLimitBytes - + ISACencUB_obj->bitstr_obj.stream_index; + + memset(HPw, 0, sizeof(double) * FRAMESAMPLES_HALF); + + /* transform */ + WebRtcIsac_Time2Spec(LPw, HPw, fre, fim, &ISACencUB_obj->fftstr_obj); + + //Store real FFT coefficients for multiple encoding + memcpy(&ISACencUB_obj->SaveEnc_obj.realFFT, fre, + FRAMESAMPLES_HALF * sizeof(WebRtc_Word16)); + + //Store imaginary FFT coefficients for multiple encoding + memcpy(&ISACencUB_obj->SaveEnc_obj.imagFFT, fim, + FRAMESAMPLES_HALF * sizeof(WebRtc_Word16)); + + // Save the bit-stream object at this point for FEC. + memcpy(&ISACencUB_obj->SaveEnc_obj.bitStreamObj, + &ISACencUB_obj->bitstr_obj, sizeof(Bitstr)); + + /* quantization and lossless coding */ + err = WebRtcIsac_EncodeSpecUB12(fre, fim, &ISACencUB_obj->bitstr_obj); + if ((err < 0) && (err != -ISAC_DISALLOWED_BITSTREAM_LENGTH)) { + /* There has been an error but it was not too large + payload (we can cure too large payload) */ + return err; + } + iterCntr = 0; + while((ISACencUB_obj->bitstr_obj.stream_index > payloadLimitBytes) || + (err == -ISAC_DISALLOWED_BITSTREAM_LENGTH)) { + double bytesSpecCoderUsed; + double transcodeScale; + + if (iterCntr >= MAX_PAYLOAD_LIMIT_ITERATION) { + /* We were not able to limit the payload size */ + return -ISAC_PAYLOAD_LARGER_THAN_LIMIT; + } + + if (err == -ISAC_DISALLOWED_BITSTREAM_LENGTH) { + bytesSpecCoderUsed = STREAM_SIZE_MAX; + // being coservative + transcodeScale = bytesLeftSpecCoding / bytesSpecCoderUsed * 0.5; + } else { + bytesSpecCoderUsed = ISACencUB_obj->bitstr_obj.stream_index - + transcodingParam.stream_index; + transcodeScale = bytesLeftSpecCoding / bytesSpecCoderUsed; + } + + /* To be safe, we reduce the scale depending on the + number of iterations. */ + transcodeScale *= (1.0 - (0.9 * (double)iterCntr/ + (double)MAX_PAYLOAD_LIMIT_ITERATION)); + + /* Scale the LPC Gains */ + for (k = 0; k < SUBFRAMES; k++) { + transcodingParam.loFiltGain[k] *= transcodeScale; + } + + /* Scale DFT coefficients */ + for (k = 0; k < FRAMESAMPLES_HALF; k++) { + fre[k] = (WebRtc_Word16)(fre[k] * transcodeScale + 0.5); + fim[k] = (WebRtc_Word16)(fim[k] * transcodeScale + 0.5); + } + + //Store real FFT coefficients for multiple encoding + memcpy(&ISACencUB_obj->SaveEnc_obj.realFFT, fre, + FRAMESAMPLES_HALF * sizeof(WebRtc_Word16)); + + //Store imaginary FFT coefficients for multiple encoding + memcpy(&ISACencUB_obj->SaveEnc_obj.imagFFT, fim, + FRAMESAMPLES_HALF * sizeof(WebRtc_Word16)); + + + /* Re-store the state of arithmetic coder before coding LPC gains */ + ISACencUB_obj->bitstr_obj.W_upper = transcodingParam.W_upper; + + ISACencUB_obj->bitstr_obj.stream_index = transcodingParam.stream_index; + + ISACencUB_obj->bitstr_obj.streamval = transcodingParam.streamval; + + ISACencUB_obj->bitstr_obj.stream[transcodingParam.stream_index - 2] = + transcodingParam.stream[0]; + + ISACencUB_obj->bitstr_obj.stream[transcodingParam.stream_index - 1] = + transcodingParam.stream[1]; + + ISACencUB_obj->bitstr_obj.stream[transcodingParam.stream_index] = + transcodingParam.stream[2]; + + // Store the gains for multiple encoding + memcpy(&ISACencUB_obj->SaveEnc_obj.lpcGain, lpcGains, SUBFRAMES * + sizeof(double)); + + // encode LPC gain and store quantization indices. HAving quantization + // indices reduces transcoding complexity if 'scale factor' is 1. + WebRtcIsac_EncodeLpcGainUb(transcodingParam.loFiltGain, + &ISACencUB_obj->bitstr_obj, + ISACencUB_obj->SaveEnc_obj.lpcGainIndex); + + // Save the bit-stream object at this point for FEC. + memcpy(&ISACencUB_obj->SaveEnc_obj.bitStreamObj, + &ISACencUB_obj->bitstr_obj, sizeof(Bitstr)); + + /* Update the number of bytes left for encoding the spectrum */ + bytesLeftSpecCoding = payloadLimitBytes - + ISACencUB_obj->bitstr_obj.stream_index; + + /* Encode the spectrum */ + err = WebRtcIsac_EncodeSpecUB12(fre, fim, + &ISACencUB_obj->bitstr_obj); + if ((err < 0) && (err != -ISAC_DISALLOWED_BITSTREAM_LENGTH)) { + /* There has been an error but it was not too large payload + (we can cure too large payload) */ + return err; + } + iterCntr++; + } + + /* complete arithmetic coding */ + return WebRtcIsac_EncTerminate(&ISACencUB_obj->bitstr_obj); +} + + + + + + +/* This function is used to create a new bitstream with new BWE. + The same data as previously encoded with the function WebRtcIsac_Encoder(). + The data needed is taken from the struct, where it was stored + when calling the encoder. */ + +int WebRtcIsac_EncodeStoredDataLb( + const ISAC_SaveEncData_t* ISACSavedEnc_obj, + Bitstr* ISACBitStr_obj, + int BWnumber, + float scale) +{ + int ii; + int status; + int BWno = BWnumber; + + const WebRtc_UWord16 *WebRtcIsac_kQPitchGainCdf_ptr[1]; + const WebRtc_UWord16 **cdf; + + double tmpLPCcoeffs_lo[(ORDERLO+1)*SUBFRAMES*2]; + double tmpLPCcoeffs_hi[(ORDERHI+1)*SUBFRAMES*2]; + int tmpLPCindex_g[12*2]; + WebRtc_Word16 tmp_fre[FRAMESAMPLES], tmp_fim[FRAMESAMPLES]; + + /* Sanity Check - possible values for BWnumber is 0 - 23 */ + if ((BWnumber < 0) || (BWnumber > 23)) { + return -ISAC_RANGE_ERROR_BW_ESTIMATOR; + } + + /* reset bitstream */ + ISACBitStr_obj->W_upper = 0xFFFFFFFF; + ISACBitStr_obj->streamval = 0; + ISACBitStr_obj->stream_index = 0; + + /* encode frame length */ + status = WebRtcIsac_EncodeFrameLen(ISACSavedEnc_obj->framelength, + ISACBitStr_obj); + if (status < 0) { + /* Wrong frame size */ + return status; + } + + /* Transcoding */ + if ((scale > 0.0) && (scale < 1.0)) { + /* Compensate LPC gain */ + for (ii = 0; + ii < ((ORDERLO + 1)* SUBFRAMES * (1 + ISACSavedEnc_obj->startIdx)); + ii++) { + tmpLPCcoeffs_lo[ii] = scale * ISACSavedEnc_obj->LPCcoeffs_lo[ii]; + } + for (ii = 0; + ii < ((ORDERHI + 1) * SUBFRAMES *(1 + ISACSavedEnc_obj->startIdx)); + ii++) { + tmpLPCcoeffs_hi[ii] = scale * ISACSavedEnc_obj->LPCcoeffs_hi[ii]; + } + /* Scale DFT */ + for (ii = 0; + ii < (FRAMESAMPLES_HALF * (1 + ISACSavedEnc_obj->startIdx)); + ii++) { + tmp_fre[ii] = (WebRtc_Word16)((scale) * + (float)ISACSavedEnc_obj->fre[ii]) ; + tmp_fim[ii] = (WebRtc_Word16)((scale) * + (float)ISACSavedEnc_obj->fim[ii]) ; + } + } else { + for (ii = 0; + ii < (KLT_ORDER_GAIN * (1 + ISACSavedEnc_obj->startIdx)); + ii++) { + tmpLPCindex_g[ii] = ISACSavedEnc_obj->LPCindex_g[ii]; + } + for (ii = 0; + ii < (FRAMESAMPLES_HALF * (1 + ISACSavedEnc_obj->startIdx)); + ii++) { + tmp_fre[ii] = ISACSavedEnc_obj->fre[ii]; + tmp_fim[ii] = ISACSavedEnc_obj->fim[ii]; + } + } + + /* encode bandwidth estimate */ + WebRtcIsac_EncodeReceiveBw(&BWno, ISACBitStr_obj); + + /* Loop over number of 30 msec */ + for (ii = 0; ii <= ISACSavedEnc_obj->startIdx; ii++) { + /* encode pitch gains */ + *WebRtcIsac_kQPitchGainCdf_ptr = WebRtcIsac_kQPitchGainCdf; + WebRtcIsac_EncHistMulti(ISACBitStr_obj, + &ISACSavedEnc_obj->pitchGain_index[ii], WebRtcIsac_kQPitchGainCdf_ptr, 1); + + /* entropy coding of quantization pitch lags */ + /* voicing classificiation */ + if (ISACSavedEnc_obj->meanGain[ii] < 0.2) { + cdf = WebRtcIsac_kQPitchLagCdfPtrLo; + } else if (ISACSavedEnc_obj->meanGain[ii] < 0.4) { + cdf = WebRtcIsac_kQPitchLagCdfPtrMid; + } else { + cdf = WebRtcIsac_kQPitchLagCdfPtrHi; + } + WebRtcIsac_EncHistMulti(ISACBitStr_obj, + &ISACSavedEnc_obj->pitchIndex[PITCH_SUBFRAMES*ii], cdf, + PITCH_SUBFRAMES); + + /* LPC */ + /* entropy coding of model number */ + WebRtcIsac_EncHistMulti(ISACBitStr_obj, + &ISACSavedEnc_obj->LPCmodel[ii], WebRtcIsac_kQKltModelCdfPtr, 1); + + /* entropy coding of quantization indices - LPC shape only */ + WebRtcIsac_EncHistMulti(ISACBitStr_obj, + &ISACSavedEnc_obj->LPCindex_s[KLT_ORDER_SHAPE*ii], + WebRtcIsac_kQKltCdfPtrShape[ISACSavedEnc_obj->LPCmodel[ii]], + KLT_ORDER_SHAPE); + + /* If transcoding, get new LPC gain indices */ + if (scale < 1.0) { + WebRtcIsac_TranscodeLPCCoef(&tmpLPCcoeffs_lo[(ORDERLO+1) * + SUBFRAMES*ii], &tmpLPCcoeffs_hi[(ORDERHI+1)*SUBFRAMES*ii], + ISACSavedEnc_obj->LPCmodel[ii], + &tmpLPCindex_g[KLT_ORDER_GAIN * ii]); + } + + /* entropy coding of quantization indices - LPC gain */ + WebRtcIsac_EncHistMulti(ISACBitStr_obj, + &tmpLPCindex_g[KLT_ORDER_GAIN*ii], WebRtcIsac_kQKltCdfPtrGain[ + ISACSavedEnc_obj->LPCmodel[ii]], KLT_ORDER_GAIN); + + /* quantization and lossless coding */ + status = WebRtcIsac_EncodeSpecLb(&tmp_fre[ii*FRAMESAMPLES_HALF], + &tmp_fim[ii*FRAMESAMPLES_HALF], ISACBitStr_obj, + ISACSavedEnc_obj->AvgPitchGain[ii]); + if (status < 0) { + return status; + } + } + + /* complete arithmetic coding */ + return WebRtcIsac_EncTerminate(ISACBitStr_obj); +} + + + + +int WebRtcIsac_EncodeStoredDataUb12( + const ISACUBSaveEncDataStruct* ISACSavedEnc_obj, + Bitstr* bitStream, + WebRtc_Word32 jitterInfo, + float scale) +{ + int n; + int err; + double lpcGain[SUBFRAMES]; + WebRtc_Word16 realFFT[FRAMESAMPLES_HALF]; + WebRtc_Word16 imagFFT[FRAMESAMPLES_HALF]; + + /* reset bitstream */ + bitStream->W_upper = 0xFFFFFFFF; + bitStream->streamval = 0; + bitStream->stream_index = 0; + + // Encode jitter index + WebRtcIsac_EncodeJitterInfo(jitterInfo, bitStream); + + err = WebRtcIsac_EncodeBandwidth(isac12kHz, bitStream); + if(err < 0) + { + return err; + } + + // Encode LPC-shape + WebRtcIsac_EncHistMulti(bitStream, ISACSavedEnc_obj->indexLPCShape, + WebRtcIsac_kLpcShapeCdfMatUb12, UB_LPC_ORDER * UB_LPC_VEC_PER_FRAME); + + + // we only consider scales between zero and one. + if((scale <= 0.0) || (scale > 1.0)) + { + scale = 1.0f; + } + + if(scale == 1.0f) + { + //memcpy(lpcGain, ISACSavedEnc_obj->lpcGain, SUBFRAMES * sizeof(double)); + WebRtcIsac_EncHistMulti(bitStream, ISACSavedEnc_obj->lpcGainIndex, + WebRtcIsac_kLpcGainCdfMat, UB_LPC_GAIN_DIM); + // store FFT coefficients + err = WebRtcIsac_EncodeSpecUB12(ISACSavedEnc_obj->realFFT, + ISACSavedEnc_obj->imagFFT, bitStream); + } + else + { + /* scale lpc gain and FFT coefficients */ + for(n = 0; n < SUBFRAMES; n++) + { + lpcGain[n] = scale * ISACSavedEnc_obj->lpcGain[n]; + } + // store lpc gain + WebRtcIsac_StoreLpcGainUb(lpcGain, bitStream); + for(n = 0; n < FRAMESAMPLES_HALF; n++) + { + realFFT[n] = (WebRtc_Word16)(scale * (float)ISACSavedEnc_obj->realFFT[n] + 0.5f); + imagFFT[n] = (WebRtc_Word16)(scale * (float)ISACSavedEnc_obj->imagFFT[n] + 0.5f); + } + // store FFT coefficients + err = WebRtcIsac_EncodeSpecUB12(realFFT, imagFFT, bitStream); + } + if(err < 0) + { + // error happened while encoding FFT coefficients. + return err; + } + + /* complete arithmetic coding */ + return WebRtcIsac_EncTerminate(bitStream); +} + + +int +WebRtcIsac_EncodeStoredDataUb16( + const ISACUBSaveEncDataStruct* ISACSavedEnc_obj, + Bitstr* bitStream, + WebRtc_Word32 jitterInfo, + float scale) +{ + int n; + int err; + double lpcGain[SUBFRAMES << 1]; + WebRtc_Word16 realFFT[FRAMESAMPLES_HALF]; + WebRtc_Word16 imagFFT[FRAMESAMPLES_HALF]; + + /* reset bitstream */ + bitStream->W_upper = 0xFFFFFFFF; + bitStream->streamval = 0; + bitStream->stream_index = 0; + + // Encode jitter index + WebRtcIsac_EncodeJitterInfo(jitterInfo, bitStream); + + err = WebRtcIsac_EncodeBandwidth(isac16kHz, bitStream); + if(err < 0) + { + return err; + } + + WebRtcIsac_EncHistMulti(bitStream, ISACSavedEnc_obj->indexLPCShape, + WebRtcIsac_kLpcShapeCdfMatUb16, UB_LPC_ORDER * UB16_LPC_VEC_PER_FRAME); + + // we only consider scales between zero and one. + if((scale <= 0.0) || (scale > 1.0)) + { + scale = 1.0f; + } + + if(scale == 1.0f) + { + // store gains + WebRtcIsac_EncHistMulti(bitStream, ISACSavedEnc_obj->lpcGainIndex, + WebRtcIsac_kLpcGainCdfMat, UB_LPC_GAIN_DIM); + WebRtcIsac_EncHistMulti(bitStream, &ISACSavedEnc_obj->lpcGainIndex[SUBFRAMES], + WebRtcIsac_kLpcGainCdfMat, UB_LPC_GAIN_DIM); + // store FFT coefficients + err = WebRtcIsac_EncodeSpecUB16(ISACSavedEnc_obj->realFFT, + ISACSavedEnc_obj->imagFFT, bitStream); + + } + else + { + /* Scale Gain */ + for(n = 0; n < SUBFRAMES; n++) + { + lpcGain[n] = scale * ISACSavedEnc_obj->lpcGain[n]; + lpcGain[n + SUBFRAMES] = scale * ISACSavedEnc_obj->lpcGain[n + SUBFRAMES]; + } + // store lpc gain + WebRtcIsac_StoreLpcGainUb(lpcGain, bitStream); + WebRtcIsac_StoreLpcGainUb(&lpcGain[SUBFRAMES], bitStream); + /* scale FFT coefficients */ + for(n = 0; n < FRAMESAMPLES_HALF; n++) + { + realFFT[n] = (WebRtc_Word16)(scale * (float)ISACSavedEnc_obj->realFFT[n] + 0.5f); + imagFFT[n] = (WebRtc_Word16)(scale * (float)ISACSavedEnc_obj->imagFFT[n] + 0.5f); + } + // store FFT coefficients + err = WebRtcIsac_EncodeSpecUB16(realFFT, imagFFT, bitStream); + } + + if(err < 0) + { + // error happened while encoding FFT coefficients. + return err; + } + + /* complete arithmetic coding */ + return WebRtcIsac_EncTerminate(bitStream); +} + + +WebRtc_Word16 +WebRtcIsac_GetRedPayloadUb( + const ISACUBSaveEncDataStruct* ISACSavedEncObj, + Bitstr* bitStreamObj, + enum ISACBandwidth bandwidth) +{ + int n; + WebRtc_Word16 status; + WebRtc_Word16 realFFT[FRAMESAMPLES_HALF]; + WebRtc_Word16 imagFFT[FRAMESAMPLES_HALF]; + + // store bit-stream object. + memcpy(bitStreamObj, &ISACSavedEncObj->bitStreamObj, sizeof(Bitstr)); + + // Scale FFT coefficients. + for(n = 0; n < FRAMESAMPLES_HALF; n++) + { + realFFT[n] = (WebRtc_Word16)((float)ISACSavedEncObj->realFFT[n] * + RCU_TRANSCODING_SCALE_UB + 0.5); + imagFFT[n] = (WebRtc_Word16)((float)ISACSavedEncObj->imagFFT[n] * + RCU_TRANSCODING_SCALE_UB + 0.5); + } + + switch(bandwidth) + { + case isac12kHz: + { + status = WebRtcIsac_EncodeSpecUB12(realFFT, imagFFT, bitStreamObj); + break; + } + case isac16kHz: + { + status = WebRtcIsac_EncodeSpecUB16(realFFT, imagFFT, bitStreamObj); + break; + } + default: + return -1; + } + + if(status < 0) + { + // error happened + return status; + } + else + { + // terminate entropy coding + return WebRtcIsac_EncTerminate(bitStreamObj); + } +} diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/encode_lpc_swb.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/encode_lpc_swb.c.svn-base new file mode 100644 index 0000000000..2bf4c36460 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/encode_lpc_swb.c.svn-base @@ -0,0 +1,708 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * code_LPC_UB.c + * + * This file contains definition of functions used to + * encode LPC parameters (Shape & gain) of the upper band. + * + */ + +#include "encode_lpc_swb.h" +#include "typedefs.h" +#include "settings.h" + +#include "lpc_shape_swb12_tables.h" +#include "lpc_shape_swb16_tables.h" +#include "lpc_gain_swb_tables.h" + +#include +#include +#include + +/****************************************************************************** + * WebRtcIsac_RemoveLarMean() + * + * Remove the means from LAR coefficients. + * + * Input: + * -lar : pointer to lar vectors. LAR vectors are + * concatenated. + * -bandwidth : indicates if the given LAR vectors belong + * to SWB-12kHz or SWB-16kHz. + * + * Output: + * -lar : pointer to mean-removed LAR:s. + * + * + */ +WebRtc_Word16 +WebRtcIsac_RemoveLarMean( + double* lar, + WebRtc_Word16 bandwidth) +{ + WebRtc_Word16 coeffCntr; + WebRtc_Word16 vecCntr; + WebRtc_Word16 numVec; + const double* meanLAR; + switch(bandwidth) + { + case isac12kHz: + { + numVec = UB_LPC_VEC_PER_FRAME; + meanLAR = WebRtcIsac_kMeanLarUb12; + break; + } + case isac16kHz: + { + numVec = UB16_LPC_VEC_PER_FRAME; + meanLAR = WebRtcIsac_kMeanLarUb16; + break; + } + default: + return -1; + } + + for(vecCntr = 0; vecCntr < numVec; vecCntr++) + { + for(coeffCntr = 0; coeffCntr < UB_LPC_ORDER; coeffCntr++) + { + // REMOVE MEAN + *lar++ -= meanLAR[coeffCntr]; + } + } + return 0; +} + +/****************************************************************************** + * WebRtcIsac_DecorrelateIntraVec() + * + * Remove the correlation amonge the components of LAR vectors. If LAR vectors + * of one frame are put in a matrix where each column is a LAR vector of a + * sub-frame, then this is equivalent to multiplying the LAR matrix with + * a decorrelting mtrix from left. + * + * Input: + * -inLar : pointer to mean-removed LAR vecrtors. + * -bandwidth : indicates if the given LAR vectors belong + * to SWB-12kHz or SWB-16kHz. + * + * Output: + * -out : decorrelated LAR vectors. + */ +WebRtc_Word16 +WebRtcIsac_DecorrelateIntraVec( + const double* data, + double* out, + WebRtc_Word16 bandwidth) +{ + const double* ptrData; + const double* ptrRow; + WebRtc_Word16 rowCntr; + WebRtc_Word16 colCntr; + WebRtc_Word16 larVecCntr; + WebRtc_Word16 numVec; + const double* decorrMat; + switch(bandwidth) + { + case isac12kHz: + { + decorrMat = &WebRtcIsac_kIntraVecDecorrMatUb12[0][0]; + numVec = UB_LPC_VEC_PER_FRAME; + break; + } + case isac16kHz: + { + decorrMat = &WebRtcIsac_kIintraVecDecorrMatUb16[0][0]; + numVec = UB16_LPC_VEC_PER_FRAME; + break; + } + default: + return -1; + } + + // + // decorrMat * data + // + // data is assumed to contain 'numVec' of LAR + // vectors (mean removed) each of dimension 'UB_LPC_ORDER' + // concatenated one after the other. + // + + ptrData = data; + for(larVecCntr = 0; larVecCntr < numVec; larVecCntr++) + { + for(rowCntr = 0; rowCntr < UB_LPC_ORDER; rowCntr++) + { + ptrRow = &decorrMat[rowCntr * UB_LPC_ORDER]; + *out = 0; + for(colCntr = 0; colCntr < UB_LPC_ORDER; colCntr++) + { + *out += ptrData[colCntr] * ptrRow[colCntr]; + } + out++; + } + ptrData += UB_LPC_ORDER; + } + return 0; +} + +/****************************************************************************** + * WebRtcIsac_DecorrelateInterVec() + * + * Remover the correlation among mean-removed LAR vectors. If LAR vectors + * of one frame are put in a matrix where each column is a LAR vector of a + * sub-frame, then this is equivalent to multiplying the LAR matrix with + * a decorrelting mtrix from right. + * + * Input: + * -data : pointer to matrix of LAR vectors. The matrix + * is stored column-wise. + * -bandwidth : indicates if the given LAR vectors belong + * to SWB-12kHz or SWB-16kHz. + * + * Output: + * -out : decorrelated LAR vectors. + */ +WebRtc_Word16 +WebRtcIsac_DecorrelateInterVec( + const double* data, + double* out, + WebRtc_Word16 bandwidth) +{ + WebRtc_Word16 coeffCntr; + WebRtc_Word16 rowCntr; + WebRtc_Word16 colCntr; + const double* decorrMat; + WebRtc_Word16 interVecDim; + + switch(bandwidth) + { + case isac12kHz: + { + decorrMat = &WebRtcIsac_kInterVecDecorrMatUb12[0][0]; + interVecDim = UB_LPC_VEC_PER_FRAME; + break; + } + case isac16kHz: + { + decorrMat = &WebRtcIsac_kInterVecDecorrMatUb16[0][0]; + interVecDim = UB16_LPC_VEC_PER_FRAME; + break; + } + default: + return -1; + } + + // + // data * decorrMat + // + // data is of size 'interVecDim' * 'UB_LPC_ORDER' + // That is 'interVecDim' of LAR vectors (mean removed) + // in columns each of dimension 'UB_LPC_ORDER'. + // matrix is stored column-wise. + // + + for(coeffCntr = 0; coeffCntr < UB_LPC_ORDER; coeffCntr++) + { + for(colCntr = 0; colCntr < interVecDim; colCntr++) + { + out[coeffCntr + colCntr * UB_LPC_ORDER] = 0; + for(rowCntr = 0; rowCntr < interVecDim; rowCntr++) + { + out[coeffCntr + colCntr * UB_LPC_ORDER] += + data[coeffCntr + rowCntr * UB_LPC_ORDER] * + decorrMat[rowCntr * interVecDim + colCntr]; + } + } + } + return 0; +} + +/****************************************************************************** + * WebRtcIsac_QuantizeUncorrLar() + * + * Quantize the uncorrelated parameters. + * + * Input: + * -data : uncorrelated LAR vectors. + * -bandwidth : indicates if the given LAR vectors belong + * to SWB-12kHz or SWB-16kHz. + * + * Output: + * -data : quantized version of the input. + * -idx : pointer to quantization indices. + */ +double +WebRtcIsac_QuantizeUncorrLar( + double* data, + int* recIdx, + WebRtc_Word16 bandwidth) +{ + WebRtc_Word16 cntr; + WebRtc_Word32 idx; + WebRtc_Word16 interVecDim; + const double* leftRecPoint; + double quantizationStepSize; + const WebRtc_Word16* numQuantCell; + switch(bandwidth) + { + case isac12kHz: + { + leftRecPoint = WebRtcIsac_kLpcShapeLeftRecPointUb12; + quantizationStepSize = WebRtcIsac_kLpcShapeQStepSizeUb12; + numQuantCell = WebRtcIsac_kLpcShapeNumRecPointUb12; + interVecDim = UB_LPC_VEC_PER_FRAME; + break; + } + case isac16kHz: + { + leftRecPoint = WebRtcIsac_kLpcShapeLeftRecPointUb16; + quantizationStepSize = WebRtcIsac_kLpcShapeQStepSizeUb16; + numQuantCell = WebRtcIsac_kLpcShapeNumRecPointUb16; + interVecDim = UB16_LPC_VEC_PER_FRAME; + break; + } + default: + return -1; + } + + // + // Quantize the parametrs. + // + for(cntr = 0; cntr < UB_LPC_ORDER * interVecDim; cntr++) + { + idx = (WebRtc_Word32)floor((*data - leftRecPoint[cntr]) / + quantizationStepSize + 0.5); + if(idx < 0) + { + idx = 0; + } + else if(idx >= numQuantCell[cntr]) + { + idx = numQuantCell[cntr] - 1; + } + + *data++ = leftRecPoint[cntr] + idx * quantizationStepSize; + *recIdx++ = idx; + } + return 0; +} + + +/****************************************************************************** + * WebRtcIsac_DequantizeLpcParam() + * + * Get the quantized value of uncorrelated LARs given the quantization indices. + * + * Input: + * -idx : pointer to quantiztion indices. + * -bandwidth : indicates if the given LAR vectors belong + * to SWB-12kHz or SWB-16kHz. + * + * Output: + * -out : pointer to quantized values. + */ +WebRtc_Word16 +WebRtcIsac_DequantizeLpcParam( + const int* idx, + double* out, + WebRtc_Word16 bandwidth) +{ + WebRtc_Word16 cntr; + WebRtc_Word16 interVecDim; + const double* leftRecPoint; + double quantizationStepSize; + + switch(bandwidth) + { + case isac12kHz: + { + leftRecPoint = WebRtcIsac_kLpcShapeLeftRecPointUb12; + quantizationStepSize = WebRtcIsac_kLpcShapeQStepSizeUb12; + interVecDim = UB_LPC_VEC_PER_FRAME; + break; + } + case isac16kHz: + { + leftRecPoint = WebRtcIsac_kLpcShapeLeftRecPointUb16; + quantizationStepSize = WebRtcIsac_kLpcShapeQStepSizeUb16; + interVecDim = UB16_LPC_VEC_PER_FRAME; + break; + } + default: + return -1; + } + + // + // Dequantize given the quantization indices + // + + for(cntr = 0; cntr < UB_LPC_ORDER * interVecDim; cntr++) + { + *out++ = leftRecPoint[cntr] + *idx++ * quantizationStepSize; + } + return 0; +} + + +/****************************************************************************** + * WebRtcIsac_CorrelateIntraVec() + * + * This is the inverse of WebRtcIsac_DecorrelateIntraVec(). + * + * Input: + * -data : uncorrelated parameters. + * -bandwidth : indicates if the given LAR vectors belong + * to SWB-12kHz or SWB-16kHz. + * + * Output: + * -out : correlated parametrs. + */ +WebRtc_Word16 +WebRtcIsac_CorrelateIntraVec( + const double* data, + double* out, + WebRtc_Word16 bandwidth) +{ + WebRtc_Word16 vecCntr; + WebRtc_Word16 rowCntr; + WebRtc_Word16 colCntr; + WebRtc_Word16 numVec; + const double* ptrData; + const double* intraVecDecorrMat; + + switch(bandwidth) + { + case isac12kHz: + { + numVec = UB_LPC_VEC_PER_FRAME; + intraVecDecorrMat = &WebRtcIsac_kIntraVecDecorrMatUb12[0][0]; + break; + } + case isac16kHz: + { + numVec = UB16_LPC_VEC_PER_FRAME; + intraVecDecorrMat = &WebRtcIsac_kIintraVecDecorrMatUb16[0][0]; + break; + } + default: + return -1; + } + + + ptrData = data; + for(vecCntr = 0; vecCntr < numVec; vecCntr++) + { + for(colCntr = 0; colCntr < UB_LPC_ORDER; colCntr++) + { + *out = 0; + for(rowCntr = 0; rowCntr < UB_LPC_ORDER; rowCntr++) + { + *out += ptrData[rowCntr] * + intraVecDecorrMat[rowCntr * UB_LPC_ORDER + colCntr]; + } + out++; + } + ptrData += UB_LPC_ORDER; + } + return 0; +} + +/****************************************************************************** + * WebRtcIsac_CorrelateInterVec() + * + * This is the inverse of WebRtcIsac_DecorrelateInterVec(). + * + * Input: + * -data + * -bandwidth : indicates if the given LAR vectors belong + * to SWB-12kHz or SWB-16kHz. + * + * Output: + * -out : correlated parametrs. + */ +WebRtc_Word16 +WebRtcIsac_CorrelateInterVec( + const double* data, + double* out, + WebRtc_Word16 bandwidth) +{ + WebRtc_Word16 coeffCntr; + WebRtc_Word16 rowCntr; + WebRtc_Word16 colCntr; + WebRtc_Word16 interVecDim; + double myVec[UB16_LPC_VEC_PER_FRAME]; + const double* interVecDecorrMat; + + switch(bandwidth) + { + case isac12kHz: + { + interVecDim = UB_LPC_VEC_PER_FRAME; + interVecDecorrMat = &WebRtcIsac_kInterVecDecorrMatUb12[0][0]; + break; + } + case isac16kHz: + { + interVecDim = UB16_LPC_VEC_PER_FRAME; + interVecDecorrMat = &WebRtcIsac_kInterVecDecorrMatUb16[0][0]; + break; + } + default: + return -1; + } + + for(coeffCntr = 0; coeffCntr < UB_LPC_ORDER; coeffCntr++) + { + for(rowCntr = 0; rowCntr < interVecDim; rowCntr++) + { + myVec[rowCntr] = 0; + for(colCntr = 0; colCntr < interVecDim; colCntr++) + { + myVec[rowCntr] += data[coeffCntr + colCntr * UB_LPC_ORDER] * //*ptrData * + interVecDecorrMat[rowCntr * interVecDim + colCntr]; + //ptrData += UB_LPC_ORDER; + } + } + + for(rowCntr = 0; rowCntr < interVecDim; rowCntr++) + { + out[coeffCntr + rowCntr * UB_LPC_ORDER] = myVec[rowCntr]; + } + } + return 0; +} + +/****************************************************************************** + * WebRtcIsac_AddLarMean() + * + * This is the inverse of WebRtcIsac_RemoveLarMean() + * + * Input: + * -data : pointer to mean-removed LAR:s. + * -bandwidth : indicates if the given LAR vectors belong + * to SWB-12kHz or SWB-16kHz. + * + * Output: + * -data : pointer to LARs. + */ +WebRtc_Word16 +WebRtcIsac_AddLarMean( + double* data, + WebRtc_Word16 bandwidth) +{ + WebRtc_Word16 coeffCntr; + WebRtc_Word16 vecCntr; + WebRtc_Word16 numVec; + const double* meanLAR; + + switch(bandwidth) + { + case isac12kHz: + { + numVec = UB_LPC_VEC_PER_FRAME; + meanLAR = WebRtcIsac_kMeanLarUb12; + break; + } + case isac16kHz: + { + numVec = UB16_LPC_VEC_PER_FRAME; + meanLAR = WebRtcIsac_kMeanLarUb16; + break; + } + default: + return -1; + } + + for(vecCntr = 0; vecCntr < numVec; vecCntr++) + { + for(coeffCntr = 0; coeffCntr < UB_LPC_ORDER; coeffCntr++) + { + *data++ += meanLAR[coeffCntr]; + } + } + return 0; +} + +/****************************************************************************** + * WebRtcIsac_ToLogDomainRemoveMean() + * + * Transform the LPC gain to log domain then remove the mean value. + * + * Input: + * -lpcGain : pointer to LPC Gain, expecting 6 LPC gains + * + * Output: + * -lpcGain : mean-removed in log domain. + */ +WebRtc_Word16 +WebRtcIsac_ToLogDomainRemoveMean( + double* data) +{ + WebRtc_Word16 coeffCntr; + for(coeffCntr = 0; coeffCntr < UB_LPC_GAIN_DIM; coeffCntr++) + { + data[coeffCntr] = log(data[coeffCntr]) - WebRtcIsac_kMeanLpcGain; + } + return 0; +} + + +/****************************************************************************** + * WebRtcIsac_DecorrelateLPGain() + * + * Decorrelate LPC gains. There are 6 LPC Gains per frame. This is like + * multiplying gain vector with decorrelating matrix. + * + * Input: + * -data : LPC gain in log-domain with mean removed. + * + * Output: + * -out : decorrelated parameters. + */ +WebRtc_Word16 WebRtcIsac_DecorrelateLPGain( + const double* data, + double* out) +{ + WebRtc_Word16 rowCntr; + WebRtc_Word16 colCntr; + + for(colCntr = 0; colCntr < UB_LPC_GAIN_DIM; colCntr++) + { + *out = 0; + for(rowCntr = 0; rowCntr < UB_LPC_GAIN_DIM; rowCntr++) + { + *out += data[rowCntr] * WebRtcIsac_kLpcGainDecorrMat[rowCntr][colCntr]; + } + out++; + } + return 0; +} + +/****************************************************************************** + * WebRtcIsac_QuantizeLpcGain() + * + * Quantize the decorrelated log-domain gains. + * + * Input: + * -lpcGain : uncorrelated LPC gains. + * + * Output: + * -idx : quantization indices + * -lpcGain : quantized value of the inpt. + */ +double WebRtcIsac_QuantizeLpcGain( + double* data, + int* idx) +{ + WebRtc_Word16 coeffCntr; + for(coeffCntr = 0; coeffCntr < UB_LPC_GAIN_DIM; coeffCntr++) + { + *idx = (int)floor((*data - WebRtcIsac_kLeftRecPointLpcGain[coeffCntr]) / + WebRtcIsac_kQSizeLpcGain + 0.5); + + if(*idx < 0) + { + *idx = 0; + } + else if(*idx >= WebRtcIsac_kNumQCellLpcGain[coeffCntr]) + { + *idx = WebRtcIsac_kNumQCellLpcGain[coeffCntr] - 1; + } + *data = WebRtcIsac_kLeftRecPointLpcGain[coeffCntr] + *idx * + WebRtcIsac_kQSizeLpcGain; + + data++; + idx++; + } + return 0; +} + +/****************************************************************************** + * WebRtcIsac_DequantizeLpcGain() + * + * Get the quantized values given the quantization indices. + * + * Input: + * -idx : pointer to quantization indices. + * + * Output: + * -lpcGains : quantized values of the given parametes. + */ +WebRtc_Word16 WebRtcIsac_DequantizeLpcGain( + const int* idx, + double* out) +{ + WebRtc_Word16 coeffCntr; + for(coeffCntr = 0; coeffCntr < UB_LPC_GAIN_DIM; coeffCntr++) + { + *out = WebRtcIsac_kLeftRecPointLpcGain[coeffCntr] + *idx * + WebRtcIsac_kQSizeLpcGain; + out++; + idx++; + } + return 0; +} + +/****************************************************************************** + * WebRtcIsac_CorrelateLpcGain() + * + * This is the inverse of WebRtcIsac_DecorrelateLPGain(). + * + * Input: + * -data : decorrelated parameters. + * + * Output: + * -out : correlated parameters. + */ +WebRtc_Word16 WebRtcIsac_CorrelateLpcGain( + const double* data, + double* out) +{ + WebRtc_Word16 rowCntr; + WebRtc_Word16 colCntr; + + for(rowCntr = 0; rowCntr < UB_LPC_GAIN_DIM; rowCntr++) + { + *out = 0; + for(colCntr = 0; colCntr < UB_LPC_GAIN_DIM; colCntr++) + { + *out += WebRtcIsac_kLpcGainDecorrMat[rowCntr][colCntr] * data[colCntr]; + } + out++; + } + + return 0; +} + + +/****************************************************************************** + * WebRtcIsac_AddMeanToLinearDomain() + * + * This is the inverse of WebRtcIsac_ToLogDomainRemoveMean(). + * + * Input: + * -lpcGain : LPC gain in log-domain & mean removed + * + * Output: + * -lpcGain : LPC gain in normal domain. + */ +WebRtc_Word16 WebRtcIsac_AddMeanToLinearDomain( + double* lpcGains) +{ + WebRtc_Word16 coeffCntr; + for(coeffCntr = 0; coeffCntr < UB_LPC_GAIN_DIM; coeffCntr++) + { + lpcGains[coeffCntr] = exp(lpcGains[coeffCntr] + WebRtcIsac_kMeanLpcGain); + } + return 0; +} diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/encode_lpc_swb.h.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/encode_lpc_swb.h.svn-base new file mode 100644 index 0000000000..e7f1a76af2 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/encode_lpc_swb.h.svn-base @@ -0,0 +1,283 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * encode_lpc_swb.h + * + * This file contains declaration of functions used to + * encode LPC parameters (Shape & gain) of the upper band. + * + */ + +#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_ENCODE_LPC_SWB_H_ +#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_ENCODE_LPC_SWB_H_ + +#include "typedefs.h" +#include "settings.h" +#include "structs.h" + + +/****************************************************************************** + * WebRtcIsac_RemoveLarMean() + * + * Remove the means from LAR coefficients. + * + * Input: + * -lar : pointer to lar vectors. LAR vectors are + * concatenated. + * -bandwidth : indicates if the given LAR vectors belong + * to SWB-12kHz or SWB-16kHz. + * + * Output: + * -lar : pointer to mean-removed LAR:s. + * + * + */ +WebRtc_Word16 WebRtcIsac_RemoveLarMean( + double* lar, + WebRtc_Word16 bandwidth); + +/****************************************************************************** + * WebRtcIsac_DecorrelateIntraVec() + * + * Remove the correlation amonge the components of LAR vectors. If LAR vectors + * of one frame are put in a matrix where each column is a LAR vector of a + * sub-frame, then this is equivalent to multiplying the LAR matrix with + * a decorrelting mtrix from left. + * + * Input: + * -inLar : pointer to mean-removed LAR vecrtors. + * -bandwidth : indicates if the given LAR vectors belong + * to SWB-12kHz or SWB-16kHz. + * + * Output: + * -out : decorrelated LAR vectors. + */ +WebRtc_Word16 WebRtcIsac_DecorrelateIntraVec( + const double* inLAR, + double* out, + WebRtc_Word16 bandwidth); + + +/****************************************************************************** + * WebRtcIsac_DecorrelateInterVec() + * + * Remover the correlation among mean-removed LAR vectors. If LAR vectors + * of one frame are put in a matrix where each column is a LAR vector of a + * sub-frame, then this is equivalent to multiplying the LAR matrix with + * a decorrelting mtrix from right. + * + * Input: + * -data : pointer to matrix of LAR vectors. The matrix + * is stored column-wise. + * -bandwidth : indicates if the given LAR vectors belong + * to SWB-12kHz or SWB-16kHz. + * + * Output: + * -out : decorrelated LAR vectors. + */ +WebRtc_Word16 WebRtcIsac_DecorrelateInterVec( + const double* data, + double* out, + WebRtc_Word16 bandwidth); + + +/****************************************************************************** + * WebRtcIsac_QuantizeUncorrLar() + * + * Quantize the uncorrelated parameters. + * + * Input: + * -data : uncorrelated LAR vectors. + * -bandwidth : indicates if the given LAR vectors belong + * to SWB-12kHz or SWB-16kHz. + * + * Output: + * -data : quantized version of the input. + * -idx : pointer to quantization indices. + */ +double WebRtcIsac_QuantizeUncorrLar( + double* data, + int* idx, + WebRtc_Word16 bandwidth); + + +/****************************************************************************** + * WebRtcIsac_CorrelateIntraVec() + * + * This is the inverse of WebRtcIsac_DecorrelateIntraVec(). + * + * Input: + * -data : uncorrelated parameters. + * -bandwidth : indicates if the given LAR vectors belong + * to SWB-12kHz or SWB-16kHz. + * + * Output: + * -out : correlated parametrs. + */ +WebRtc_Word16 WebRtcIsac_CorrelateIntraVec( + const double* data, + double* out, + WebRtc_Word16 bandwidth); + + +/****************************************************************************** + * WebRtcIsac_CorrelateInterVec() + * + * This is the inverse of WebRtcIsac_DecorrelateInterVec(). + * + * Input: + * -data + * -bandwidth : indicates if the given LAR vectors belong + * to SWB-12kHz or SWB-16kHz. + * + * Output: + * -out : correlated parametrs. + */ +WebRtc_Word16 WebRtcIsac_CorrelateInterVec( + const double* data, + double* out, + WebRtc_Word16 bandwidth); + + +/****************************************************************************** + * WebRtcIsac_AddLarMean() + * + * This is the inverse of WebRtcIsac_RemoveLarMean() + * + * Input: + * -data : pointer to mean-removed LAR:s. + * -bandwidth : indicates if the given LAR vectors belong + * to SWB-12kHz or SWB-16kHz. + * + * Output: + * -data : pointer to LARs. + */ +WebRtc_Word16 WebRtcIsac_AddLarMean( + double* data, + WebRtc_Word16 bandwidth); + + +/****************************************************************************** + * WebRtcIsac_DequantizeLpcParam() + * + * Get the quantized value of uncorrelated LARs given the quantization indices. + * + * Input: + * -idx : pointer to quantiztion indices. + * -bandwidth : indicates if the given LAR vectors belong + * to SWB-12kHz or SWB-16kHz. + * + * Output: + * -out : pointer to quantized values. + */ +WebRtc_Word16 WebRtcIsac_DequantizeLpcParam( + const int* idx, + double* out, + WebRtc_Word16 bandwidth); + + +/****************************************************************************** + * WebRtcIsac_ToLogDomainRemoveMean() + * + * Transform the LPC gain to log domain then remove the mean value. + * + * Input: + * -lpcGain : pointer to LPC Gain, expecting 6 LPC gains + * + * Output: + * -lpcGain : mean-removed in log domain. + */ +WebRtc_Word16 WebRtcIsac_ToLogDomainRemoveMean( + double* lpGains); + + +/****************************************************************************** + * WebRtcIsac_DecorrelateLPGain() + * + * Decorrelate LPC gains. There are 6 LPC Gains per frame. This is like + * multiplying gain vector with decorrelating matrix. + * + * Input: + * -data : LPC gain in log-domain with mean removed. + * + * Output: + * -out : decorrelated parameters. + */ +WebRtc_Word16 WebRtcIsac_DecorrelateLPGain( + const double* data, + double* out); + + +/****************************************************************************** + * WebRtcIsac_QuantizeLpcGain() + * + * Quantize the decorrelated log-domain gains. + * + * Input: + * -lpcGain : uncorrelated LPC gains. + * + * Output: + * -idx : quantization indices + * -lpcGain : quantized value of the inpt. + */ +double WebRtcIsac_QuantizeLpcGain( + double* lpGains, + int* idx); + + +/****************************************************************************** + * WebRtcIsac_DequantizeLpcGain() + * + * Get the quantized values given the quantization indices. + * + * Input: + * -idx : pointer to quantization indices. + * + * Output: + * -lpcGains : quantized values of the given parametes. + */ +WebRtc_Word16 WebRtcIsac_DequantizeLpcGain( + const int* idx, + double* lpGains); + + +/****************************************************************************** + * WebRtcIsac_CorrelateLpcGain() + * + * This is the inverse of WebRtcIsac_DecorrelateLPGain(). + * + * Input: + * -data : decorrelated parameters. + * + * Output: + * -out : correlated parameters. + */ +WebRtc_Word16 WebRtcIsac_CorrelateLpcGain( + const double* data, + double* out); + + +/****************************************************************************** + * WebRtcIsac_AddMeanToLinearDomain() + * + * This is the inverse of WebRtcIsac_ToLogDomainRemoveMean(). + * + * Input: + * -lpcGain : LPC gain in log-domain & mean removed + * + * Output: + * -lpcGain : LPC gain in normal domain. + */ +WebRtc_Word16 WebRtcIsac_AddMeanToLinearDomain( + double* lpcGains); + + +#endif // WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_ENCODE_LPC_SWB_H_ diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/entropy_coding.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/entropy_coding.c.svn-base new file mode 100644 index 0000000000..a7299447f1 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/entropy_coding.c.svn-base @@ -0,0 +1,2748 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * entropy_coding.c + * + * This header file defines all of the functions used to arithmetically + * encode the iSAC bistream + * + */ + + +#include "entropy_coding.h" +#include "settings.h" +#include "arith_routines.h" +#include "signal_processing_library.h" +#include "spectrum_ar_model_tables.h" +#include "lpc_tables.h" +#include "pitch_gain_tables.h" +#include "pitch_lag_tables.h" +#include "encode_lpc_swb.h" +#include "lpc_shape_swb12_tables.h" +#include "lpc_shape_swb16_tables.h" +#include "lpc_gain_swb_tables.h" +#include "os_specific_inline.h" + +#include +#include + +static const WebRtc_UWord16 kLpcVecPerSegmentUb12 = 5; +static const WebRtc_UWord16 kLpcVecPerSegmentUb16 = 4; + +/* coefficients for the stepwise rate estimation */ +static const WebRtc_Word32 kRPointsQ10[100] = { + 14495, 14295, 14112, 13944, 13788, 13643, 13459, 13276, 13195, 13239, + 13243, 13191, 13133, 13216, 13263, 13330, 13316, 13242, 13191, 13106, + 12942, 12669, 12291, 11840, 11361, 10795, 10192, 9561, 8934, 8335, + 7750, 7161, 6589, 6062, 5570, 5048, 4548, 4069, 3587, 3143, + 2717, 2305, 1915, 1557, 1235, 963, 720, 541, 423, 366, + 369, 435, 561, 750, 1001, 1304, 1626, 1989, 2381, 2793, + 3219, 3656, 4134, 4612, 5106, 5629, 6122, 6644, 7216, 7801, + 8386, 8987, 9630, 10255, 10897, 11490, 11950, 12397, 12752, 12999, + 13175, 13258, 13323, 13290, 13296, 13335, 13113, 13255, 13347, 13355, + 13298, 13247, 13313, 13155, 13267, 13313, 13374, 13446, 13525, 13609}; + + +/* cdf array for encoder bandwidth (12 vs 16 kHz) indicator */ +static const WebRtc_UWord16 kOneBitEqualProbCdf[3] = { + 0, 32768, 65535 }; + +/* pointer to cdf array for encoder bandwidth (12 vs 16 kHz) indicator */ +static const WebRtc_UWord16 *kOneBitEqualProbCdf_ptr[1] = { + kOneBitEqualProbCdf }; + +/* initial cdf index for decoder of encoded bandwidth (12 vs 16 kHz) indicator */ +static const WebRtc_UWord16 kOneBitEqualProbInitIndex[1] = {1}; + + +/* coefficients for the stepwise rate estimation */ + + +static const WebRtc_Word32 acnQ10 = 426; +static const WebRtc_Word32 bcnQ10 = -581224; +static const WebRtc_Word32 ccnQ10 = 722631; +static const WebRtc_Word32 lbcnQ10 = -402874; +#define DPMIN_Q10 -10240 // -10.00 in Q10 +#define DPMAX_Q10 10240 // 10.00 in Q10 +#define MINBITS_Q10 10240 /* 10.0 in Q10 */ +#define IS_SWB_12KHZ 1 + +__inline WebRtc_UWord32 stepwise(WebRtc_Word32 dinQ10) { + + WebRtc_Word32 ind, diQ10, dtQ10; + + diQ10 = dinQ10; + if (diQ10 < DPMIN_Q10) + diQ10 = DPMIN_Q10; + if (diQ10 >= DPMAX_Q10) + diQ10 = DPMAX_Q10 - 1; + + dtQ10 = diQ10 - DPMIN_Q10; /* Q10 + Q10 = Q10 */ + ind = (dtQ10 * 5) >> 10; /* 2^10 / 5 = 0.2 in Q10 */ + /* Q10 -> Q0 */ + + return kRPointsQ10[ind]; +} + + +__inline short log2_Q10_B( int x ) +{ + int zeros; + short frac; + + zeros = WebRtcSpl_NormU32( x ); + frac = ((unsigned int)(x << zeros) & 0x7FFFFFFF) >> 21; + return (short) (((31 - zeros) << 10) + frac); +} + + + +/* compute correlation from power spectrum */ +static void WebRtcIsac_FindCorrelation(WebRtc_Word32 *PSpecQ12, WebRtc_Word32 *CorrQ7) +{ + WebRtc_Word32 summ[FRAMESAMPLES/8]; + WebRtc_Word32 diff[FRAMESAMPLES/8]; + const WebRtc_Word16 *CS_ptrQ9; + WebRtc_Word32 sum; + int k, n; + + for (k = 0; k < FRAMESAMPLES/8; k++) { + summ[k] = (PSpecQ12[k] + PSpecQ12[FRAMESAMPLES_QUARTER-1 - k] + 16) >> 5; + diff[k] = (PSpecQ12[k] - PSpecQ12[FRAMESAMPLES_QUARTER-1 - k] + 16) >> 5; + } + + sum = 2; + for (n = 0; n < FRAMESAMPLES/8; n++) + sum += summ[n]; + CorrQ7[0] = sum; + + for (k = 0; k < AR_ORDER; k += 2) { + sum = 0; + CS_ptrQ9 = WebRtcIsac_kCos[k]; + for (n = 0; n < FRAMESAMPLES/8; n++) + sum += (CS_ptrQ9[n] * diff[n] + 256) >> 9; + CorrQ7[k+1] = sum; + } + + for (k=1; k> 9; + CorrQ7[k+1] = sum; + } +} + +/* compute inverse AR power spectrum */ +/* Changed to the function used in iSAC FIX for compatibility reasons */ +static void WebRtcIsac_FindInvArSpec(const WebRtc_Word16 *ARCoefQ12, + const WebRtc_Word32 gainQ10, + WebRtc_Word32 *CurveQ16) +{ + WebRtc_Word32 CorrQ11[AR_ORDER+1]; + WebRtc_Word32 sum, tmpGain; + WebRtc_Word32 diffQ16[FRAMESAMPLES/8]; + const WebRtc_Word16 *CS_ptrQ9; + int k, n; + WebRtc_Word16 round, shftVal = 0, sh; + + sum = 0; + for (n = 0; n < AR_ORDER+1; n++) + sum += WEBRTC_SPL_MUL(ARCoefQ12[n], ARCoefQ12[n]); /* Q24 */ + sum = WEBRTC_SPL_RSHIFT_W32(WEBRTC_SPL_MUL(WEBRTC_SPL_RSHIFT_W32(sum, 6), 65) + 32768, 16); /* result in Q8 */ + CorrQ11[0] = WEBRTC_SPL_RSHIFT_W32(WEBRTC_SPL_MUL(sum, gainQ10) + 256, 9); + + /* To avoid overflow, we shift down gainQ10 if it is large. We will not lose any precision */ + if(gainQ10>400000){ + tmpGain = WEBRTC_SPL_RSHIFT_W32(gainQ10, 3); + round = 32; + shftVal = 6; + } else { + tmpGain = gainQ10; + round = 256; + shftVal = 9; + } + + for (k = 1; k < AR_ORDER+1; k++) { + sum = 16384; + for (n = k; n < AR_ORDER+1; n++) + sum += WEBRTC_SPL_MUL(ARCoefQ12[n-k], ARCoefQ12[n]); /* Q24 */ + sum = WEBRTC_SPL_RSHIFT_W32(sum, 15); + CorrQ11[k] = WEBRTC_SPL_RSHIFT_W32(WEBRTC_SPL_MUL(sum, tmpGain) + round, shftVal); + } + sum = WEBRTC_SPL_LSHIFT_W32(CorrQ11[0], 7); + for (n = 0; n < FRAMESAMPLES/8; n++) + CurveQ16[n] = sum; + + for (k = 1; k < AR_ORDER; k += 2) { + //CS_ptrQ9 = WebRtcIsac_kCos[k]; + for (n = 0; n < FRAMESAMPLES/8; n++) + CurveQ16[n] += WEBRTC_SPL_RSHIFT_W32( + WEBRTC_SPL_MUL(WebRtcIsac_kCos[k][n], CorrQ11[k+1]) + 2, 2); + } + + CS_ptrQ9 = WebRtcIsac_kCos[0]; + + /* If CorrQ11[1] too large we avoid getting overflow in the calculation by shifting */ + sh=WebRtcSpl_NormW32(CorrQ11[1]); + if (CorrQ11[1]==0) /* Use next correlation */ + sh=WebRtcSpl_NormW32(CorrQ11[2]); + + if (sh<9) + shftVal = 9 - sh; + else + shftVal = 0; + + for (n = 0; n < FRAMESAMPLES/8; n++) + diffQ16[n] = WEBRTC_SPL_RSHIFT_W32(WEBRTC_SPL_MUL(CS_ptrQ9[n], WEBRTC_SPL_RSHIFT_W32(CorrQ11[1], shftVal)) + 2, 2); + for (k = 2; k < AR_ORDER; k += 2) { + CS_ptrQ9 = WebRtcIsac_kCos[k]; + for (n = 0; n < FRAMESAMPLES/8; n++) + diffQ16[n] += WEBRTC_SPL_RSHIFT_W32(WEBRTC_SPL_MUL(CS_ptrQ9[n], WEBRTC_SPL_RSHIFT_W32(CorrQ11[k+1], shftVal)) + 2, 2); + } + + for (k=0; k>25); // * 128/4294967295 + + /* new random unsigned int */ + seed = (seed * 196314165) + 907633515; + + /* fixed-point dither sample between -64 and 64 */ + dither2_Q7 = (WebRtc_Word16)(((int)seed + 16777216)>>25); + + shft = (seed >> 25) & 15; + if (shft < 5) + { + bufQ7[k] = dither1_Q7; + bufQ7[k+1] = dither2_Q7; + bufQ7[k+2] = 0; + } + else if (shft < 10) + { + bufQ7[k] = dither1_Q7; + bufQ7[k+1] = 0; + bufQ7[k+2] = dither2_Q7; + } + else + { + bufQ7[k] = 0; + bufQ7[k+1] = dither1_Q7; + bufQ7[k+2] = dither2_Q7; + } + } + } + else + { + dither_gain_Q14 = (WebRtc_Word16)(22528 - 10 * AvgPitchGain_Q12); + + /* dither on half of the coefficients */ + for (k = 0; k < length-1; k += 2) + { + /* new random unsigned int */ + seed = (seed * 196314165) + 907633515; + + /* fixed-point dither sample between -64 and 64 */ + dither1_Q7 = (WebRtc_Word16)(((int)seed + 16777216)>>25); + + /* dither sample is placed in either even or odd index */ + shft = (seed >> 25) & 1; /* either 0 or 1 */ + + bufQ7[k + shft] = (((dither_gain_Q14 * dither1_Q7) + 8192)>>14); + bufQ7[k + 1 - shft] = 0; + } + } +} + + + +/****************************************************************************** + * GenerateDitherQ7LbUB() + * + * generate array of dither samples in Q7 There are less zeros in dither + * vector compared to GenerateDitherQ7Lb. + * + * A uniform random number generator with the range of [-64 64] is employed + * but the generated dithers are scaled by 0.35, a heuristic scaling. + * + * Input: + * -seed : the initial seed for the random number generator. + * -length : the number of dither values to be generated. + * + * Output: + * -bufQ7 : pointer to a buffer where dithers are written to. + */ +static void GenerateDitherQ7LbUB( + WebRtc_Word16 *bufQ7, + WebRtc_UWord32 seed, + int length) +{ + int k; + for (k = 0; k < length; k++) { + /* new random unsigned int */ + seed = (seed * 196314165) + 907633515; + + /* fixed-point dither sample between -64 and 64 (Q7) */ + // * 128/4294967295 + bufQ7[k] = (WebRtc_Word16)(((int)seed + 16777216)>>25); + + // scale by 0.35 + bufQ7[k] = (WebRtc_Word16)WEBRTC_SPL_MUL_16_16_RSFT(bufQ7[k], + 2048, 13); + } +} + + + +/* + * function to decode the complex spectrum from the bit stream + * returns the total number of bytes in the stream + */ +int WebRtcIsac_DecodeSpecLb(Bitstr *streamdata, + double *fr, + double *fi, + WebRtc_Word16 AvgPitchGain_Q12) +{ + WebRtc_Word16 DitherQ7[FRAMESAMPLES]; + WebRtc_Word16 data[FRAMESAMPLES]; + WebRtc_Word32 invARSpec2_Q16[FRAMESAMPLES_QUARTER]; + WebRtc_UWord16 invARSpecQ8[FRAMESAMPLES_QUARTER]; + WebRtc_Word16 ARCoefQ12[AR_ORDER+1]; + WebRtc_Word16 RCQ15[AR_ORDER]; + WebRtc_Word16 gainQ10; + WebRtc_Word32 gain2_Q10, res; + WebRtc_Word32 in_sqrt; + WebRtc_Word32 newRes; + int k, len, i; + + /* create dither signal */ + GenerateDitherQ7Lb(DitherQ7, streamdata->W_upper, FRAMESAMPLES, AvgPitchGain_Q12); + + /* decode model parameters */ + if (WebRtcIsac_DecodeRc(streamdata, RCQ15) < 0) + return -ISAC_RANGE_ERROR_DECODE_SPECTRUM; + + WebRtcSpl_ReflCoefToLpc(RCQ15, AR_ORDER, ARCoefQ12); + + if (WebRtcIsac_DecodeGain2(streamdata, &gain2_Q10) < 0) + return -ISAC_RANGE_ERROR_DECODE_SPECTRUM; + + /* compute inverse AR power spectrum */ + WebRtcIsac_FindInvArSpec(ARCoefQ12, gain2_Q10, invARSpec2_Q16); + + /* convert to magnitude spectrum, by doing square-roots (modified from SPLIB) */ + res = 1 << (WebRtcSpl_GetSizeInBits(invARSpec2_Q16[0]) >> 1); + for (k = 0; k < FRAMESAMPLES_QUARTER; k++) + { + in_sqrt = invARSpec2_Q16[k]; + i = 10; + + /* Negative values make no sense for a real sqrt-function. */ + if (in_sqrt<0) + in_sqrt=-in_sqrt; + + newRes = (in_sqrt / res + res) >> 1; + do + { + res = newRes; + newRes = (in_sqrt / res + res) >> 1; + } while (newRes != res && i-- > 0); + + invARSpecQ8[k] = (WebRtc_Word16)newRes; + } + + /* arithmetic decoding of spectrum */ + if ((len = WebRtcIsac_DecLogisticMulti2(data, streamdata, invARSpecQ8, DitherQ7, + FRAMESAMPLES, !IS_SWB_12KHZ)) <1) + return -ISAC_RANGE_ERROR_DECODE_SPECTRUM; + + /* subtract dither and scale down spectral samples with low SNR */ + if (AvgPitchGain_Q12 <= 614) + { + for (k = 0; k < FRAMESAMPLES; k += 4) + { + gainQ10 = WebRtcSpl_DivW32W16ResW16(30 << 10, + (WebRtc_Word16)((invARSpec2_Q16[k>>2] + (32768 + (33 << 16))) >> 16)); + *fr++ = (double)((data[ k ] * gainQ10 + 512) >> 10) / 128.0; + *fi++ = (double)((data[k+1] * gainQ10 + 512) >> 10) / 128.0; + *fr++ = (double)((data[k+2] * gainQ10 + 512) >> 10) / 128.0; + *fi++ = (double)((data[k+3] * gainQ10 + 512) >> 10) / 128.0; + } + } + else + { + for (k = 0; k < FRAMESAMPLES; k += 4) + { + gainQ10 = WebRtcSpl_DivW32W16ResW16(36 << 10, + (WebRtc_Word16)((invARSpec2_Q16[k>>2] + (32768 + (40 << 16))) >> 16)); + *fr++ = (double)((data[ k ] * gainQ10 + 512) >> 10) / 128.0; + *fi++ = (double)((data[k+1] * gainQ10 + 512) >> 10) / 128.0; + *fr++ = (double)((data[k+2] * gainQ10 + 512) >> 10) / 128.0; + *fi++ = (double)((data[k+3] * gainQ10 + 512) >> 10) / 128.0; + } + } + + return len; +} + +/****************************************************************************** + * WebRtcIsac_DecodeSpecUB16() + * Decode real and imaginary part of the DFT coefficients, given a bit-stream. + * This function is called when the codec is in 0-16 kHz bandwidth. + * The decoded DFT coefficient can be transformed to time domain by + * WebRtcIsac_Time2Spec(). + * + * Input: + * - streamdata : pointer to a stucture containg the encoded + * data and theparameters needed for entropy + * coding. + * + * Output: + * -*fr : pointer to a buffer where the real part of DFT + * coefficients are written to. + * -*fi : pointer to a buffer where the imaginary part + * of DFT coefficients are written to. + * + * Return value : < 0 if an error occures + * 0 if succeeded. + */ +int WebRtcIsac_DecodeSpecUB16( + Bitstr* streamdata, + double* fr, + double* fi) +{ + WebRtc_Word16 DitherQ7[FRAMESAMPLES]; + WebRtc_Word16 data[FRAMESAMPLES]; + WebRtc_Word32 invARSpec2_Q16[FRAMESAMPLES_QUARTER]; + WebRtc_UWord16 invARSpecQ8[FRAMESAMPLES_QUARTER]; + WebRtc_Word16 ARCoefQ12[AR_ORDER+1]; + WebRtc_Word16 RCQ15[AR_ORDER]; + WebRtc_Word32 gain2_Q10, res; + WebRtc_Word32 in_sqrt; + WebRtc_Word32 newRes; + int k, len, i, j; + + /* create dither signal */ + GenerateDitherQ7LbUB(DitherQ7, streamdata->W_upper, FRAMESAMPLES); + + /* decode model parameters */ + if (WebRtcIsac_DecodeRc(streamdata, RCQ15) < 0) + return -ISAC_RANGE_ERROR_DECODE_SPECTRUM; + + WebRtcSpl_ReflCoefToLpc(RCQ15, AR_ORDER, ARCoefQ12); + + if (WebRtcIsac_DecodeGain2(streamdata, &gain2_Q10) < 0) + return -ISAC_RANGE_ERROR_DECODE_SPECTRUM; + + /* compute inverse AR power spectrum */ + WebRtcIsac_FindInvArSpec(ARCoefQ12, gain2_Q10, invARSpec2_Q16); + + /* convert to magnitude spectrum, by doing square-roots (modified from SPLIB) */ + res = 1 << (WebRtcSpl_GetSizeInBits(invARSpec2_Q16[0]) >> 1); + for (k = 0; k < FRAMESAMPLES_QUARTER; k++) + { + in_sqrt = invARSpec2_Q16[k]; + i = 10; + + /* Negative values make no sense for a real sqrt-function. */ + if (in_sqrt<0) + in_sqrt=-in_sqrt; + + newRes = (in_sqrt / res + res) >> 1; + do + { + res = newRes; + newRes = (in_sqrt / res + res) >> 1; + } while (newRes != res && i-- > 0); + + invARSpecQ8[k] = (WebRtc_Word16)newRes; + } + + /* arithmetic decoding of spectrum */ + if ((len = WebRtcIsac_DecLogisticMulti2(data, streamdata, invARSpecQ8, + DitherQ7, FRAMESAMPLES, !IS_SWB_12KHZ)) <1) + return -ISAC_RANGE_ERROR_DECODE_SPECTRUM; + + /* re-arrange DFT coefficients and scale down */ + for (j = 0, k = 0; k < FRAMESAMPLES; k += 4, j++) + { + fr[j] = (double)data[ k ] / 128.0; + fi[j] = (double)data[k+1] / 128.0; + fr[(FRAMESAMPLES_HALF) - 1 - j] = (double)data[k+2] / 128.0; + fi[(FRAMESAMPLES_HALF) - 1 - j] = (double)data[k+3] / 128.0; + + } + return len; +} + + + + +/****************************************************************************** + * WebRtcIsac_DecodeSpecUB12() + * Decode real and imaginary part of the DFT coefficients, given a bit-stream. + * This function is called when the codec is in 0-12 kHz bandwidth. + * The decoded DFT coefficient can be transformed to time domain by + * WebRtcIsac_Time2Spec(). + * + * Input: + * - streamdata : pointer to a stucture containg the encoded + * data and theparameters needed for entropy + * coding. + * + * Output: + * -*fr : pointer to a buffer where the real part of DFT + * coefficients are written to. + * -*fi : pointer to a buffer where the imaginary part + * of DFT coefficients are written to. + * + * Return value : < 0 if an error occures + * 0 if succeeded. + */ +int WebRtcIsac_DecodeSpecUB12( + Bitstr *streamdata, + double *fr, + double *fi) +{ + WebRtc_Word16 DitherQ7[FRAMESAMPLES]; + WebRtc_Word16 data[FRAMESAMPLES]; + WebRtc_Word32 invARSpec2_Q16[FRAMESAMPLES_QUARTER]; + WebRtc_UWord16 invARSpecQ8[FRAMESAMPLES_QUARTER]; + WebRtc_Word16 ARCoefQ12[AR_ORDER+1]; + WebRtc_Word16 RCQ15[AR_ORDER]; + WebRtc_Word32 gain2_Q10; + WebRtc_Word32 res; + WebRtc_Word32 in_sqrt; + WebRtc_Word32 newRes; + int k, len, i; + + /* create dither signal */ + GenerateDitherQ7LbUB(DitherQ7, streamdata->W_upper, FRAMESAMPLES); + + /* decode model parameters */ + if (WebRtcIsac_DecodeRc(streamdata, RCQ15) < 0) + return -ISAC_RANGE_ERROR_DECODE_SPECTRUM; + + WebRtcSpl_ReflCoefToLpc(RCQ15, AR_ORDER, ARCoefQ12); + + if (WebRtcIsac_DecodeGain2(streamdata, &gain2_Q10) < 0) + return -ISAC_RANGE_ERROR_DECODE_SPECTRUM; + + + /* compute inverse AR power spectrum */ + WebRtcIsac_FindInvArSpec(ARCoefQ12, gain2_Q10, invARSpec2_Q16); + + /* convert to magnitude spectrum, by doing square-roots (modified from SPLIB) */ + res = 1 << (WebRtcSpl_GetSizeInBits(invARSpec2_Q16[0]) >> 1); + for (k = 0; k < FRAMESAMPLES_QUARTER; k++) + { + in_sqrt = invARSpec2_Q16[k]; + i = 10; + + /* Negative values make no sense for a real sqrt-function. */ + if (in_sqrt<0) + in_sqrt=-in_sqrt; + + newRes = (in_sqrt / res + res) >> 1; + do + { + res = newRes; + newRes = (in_sqrt / res + res) >> 1; + } while (newRes != res && i-- > 0); + + invARSpecQ8[k] = (WebRtc_Word16)newRes; + } + + /* arithmetic decoding of spectrum */ + if ((len = WebRtcIsac_DecLogisticMulti2(data, streamdata, + invARSpecQ8, DitherQ7, (FRAMESAMPLES_HALF), IS_SWB_12KHZ)) < 1) + { + return -ISAC_RANGE_ERROR_DECODE_SPECTRUM; + } + + for (k = 0, i = 0; k < FRAMESAMPLES_HALF; k += 4) + { + fr[i] = (double)data[ k ] / 128.0; + fi[i] = (double)data[k+1] / 128.0; + i++; + fr[i] = (double)data[k+2] / 128.0; + fi[i] = (double)data[k+3] / 128.0; + i++; + } + + // The second half of real and imaginary coefficients is zero. This is + // due to using the old FFT module which requires two signals as input + // while in 0-12 kHz mode we only have 8-12 kHz band, and the second signal + // is set to zero + memset(&fr[FRAMESAMPLES_QUARTER], 0, FRAMESAMPLES_QUARTER * sizeof(double)); + memset(&fi[FRAMESAMPLES_QUARTER], 0, FRAMESAMPLES_QUARTER * sizeof(double)); + + return len; +} + + + + + +int WebRtcIsac_EncodeSpecLb(const WebRtc_Word16 *fr, + const WebRtc_Word16 *fi, + Bitstr *streamdata, + WebRtc_Word16 AvgPitchGain_Q12) +{ + WebRtc_Word16 ditherQ7[FRAMESAMPLES]; + WebRtc_Word16 dataQ7[FRAMESAMPLES]; + WebRtc_Word32 PSpec[FRAMESAMPLES_QUARTER]; + WebRtc_Word32 invARSpec2_Q16[FRAMESAMPLES_QUARTER]; + WebRtc_UWord16 invARSpecQ8[FRAMESAMPLES_QUARTER]; + WebRtc_Word32 CorrQ7[AR_ORDER+1]; + WebRtc_Word32 CorrQ7_norm[AR_ORDER+1]; + WebRtc_Word16 RCQ15[AR_ORDER]; + WebRtc_Word16 ARCoefQ12[AR_ORDER+1]; + WebRtc_Word32 gain2_Q10; + WebRtc_Word16 val; + WebRtc_Word32 nrg, res; + WebRtc_UWord32 sum; + WebRtc_Word32 in_sqrt; + WebRtc_Word32 newRes; + WebRtc_Word16 err; + WebRtc_UWord32 nrg_u32; + int shift_var; + int k, n, j, i; + + + /* create dither_float signal */ + GenerateDitherQ7Lb(ditherQ7, streamdata->W_upper, FRAMESAMPLES, AvgPitchGain_Q12); + + /* add dither and quantize, and compute power spectrum */ + for (k = 0; k < FRAMESAMPLES; k += 4) + { + val = ((*fr++ + ditherQ7[k] + 64) & 0xFF80) - ditherQ7[k]; + dataQ7[k] = val; + sum = val * val; + + val = ((*fi++ + ditherQ7[k+1] + 64) & 0xFF80) - ditherQ7[k+1]; + dataQ7[k+1] = val; + sum += val * val; + + val = ((*fr++ + ditherQ7[k+2] + 64) & 0xFF80) - ditherQ7[k+2]; + dataQ7[k+2] = val; + sum += val * val; + + val = ((*fi++ + ditherQ7[k+3] + 64) & 0xFF80) - ditherQ7[k+3]; + dataQ7[k+3] = val; + sum += val * val; + + PSpec[k>>2] = sum >> 2; + } + + /* compute correlation from power spectrum */ + WebRtcIsac_FindCorrelation(PSpec, CorrQ7); + + + /* find AR coefficients */ + /* number of bit shifts to 14-bit normalize CorrQ7[0] (leaving room for sign) */ + shift_var = WebRtcSpl_NormW32(CorrQ7[0]) - 18; + + if (shift_var > 0) { + for (k=0; k> (-shift_var); + } + } + + /* find RC coefficients */ + WebRtcSpl_AutoCorrToReflCoef(CorrQ7_norm, AR_ORDER, RCQ15); + + /* quantize & code RC Coefficient */ + WebRtcIsac_EncodeRc(RCQ15, streamdata); + + /* RC -> AR coefficients */ + WebRtcSpl_ReflCoefToLpc(RCQ15, AR_ORDER, ARCoefQ12); + + /* compute ARCoef' * Corr * ARCoef in Q19 */ + nrg = 0; + for (j = 0; j <= AR_ORDER; j++) { + for (n = 0; n <= j; n++) { + nrg += ( ARCoefQ12[j] * ((CorrQ7_norm[j-n] * ARCoefQ12[n] + 256) >> 9) + 4 ) >> 3; + } + for (n = j+1; n <= AR_ORDER; n++) { + nrg += ( ARCoefQ12[j] * ((CorrQ7_norm[n-j] * ARCoefQ12[n] + 256) >> 9) + 4 ) >> 3; + } + } + + nrg_u32 = (WebRtc_UWord32)nrg; + if (shift_var > 0) { + nrg_u32 = nrg_u32 >> shift_var; + } else { + nrg_u32 = nrg_u32 << (-shift_var); + } + + if (nrg_u32 > 0x7FFFFFFF) + nrg = 0x7FFFFFFF; + else + nrg = (WebRtc_Word32)nrg_u32; + + gain2_Q10 = WebRtcSpl_DivResultInQ31(FRAMESAMPLES_QUARTER, nrg); /* also shifts 31 bits to the left! */ + + /* quantize & code gain2_Q10 */ + if (WebRtcIsac_EncodeGain2(&gain2_Q10, streamdata)) { + return -1; + } + + /* compute inverse AR power spectrum */ + WebRtcIsac_FindInvArSpec(ARCoefQ12, gain2_Q10, invARSpec2_Q16); + + /* convert to magnitude spectrum, by doing square-roots (modified from SPLIB) */ + res = 1 << (WebRtcSpl_GetSizeInBits(invARSpec2_Q16[0]) >> 1); + for (k = 0; k < FRAMESAMPLES_QUARTER; k++) + { + in_sqrt = invARSpec2_Q16[k]; + i = 10; + + /* Negative values make no sense for a real sqrt-function. */ + if (in_sqrt<0) + in_sqrt=-in_sqrt; + + newRes = (in_sqrt / res + res) >> 1; + do + { + res = newRes; + newRes = (in_sqrt / res + res) >> 1; + } while (newRes != res && i-- > 0); + + invARSpecQ8[k] = (WebRtc_Word16)newRes; + } + + /* arithmetic coding of spectrum */ + err = WebRtcIsac_EncLogisticMulti2(streamdata, dataQ7, invARSpecQ8, + FRAMESAMPLES, !IS_SWB_12KHZ); + if (err < 0) + { + return (err); + } + + return 0; +} + + +/****************************************************************************** + * WebRtcIsac_EncodeSpecUB16() + * Quantize and encode real and imaginary part of the DFT coefficients. + * This function is called when the codec is in 0-16 kHz bandwidth. + * The real and imaginary part are computed by calling WebRtcIsac_Time2Spec(). + * + * + * Input: + * -*fr : pointer to a buffer where the real part of DFT + * coefficients are stored. + * -*fi : pointer to a buffer where the imaginary part + * of DFT coefficients are stored. + * + * Output: + * - streamdata : pointer to a stucture containg the encoded + * data and theparameters needed for entropy + * coding. + * + * Return value : < 0 if an error occures + * 0 if succeeded. + */ +int WebRtcIsac_EncodeSpecUB16( + const WebRtc_Word16* fr, + const WebRtc_Word16* fi, + Bitstr* streamdata) +{ + WebRtc_Word16 ditherQ7[FRAMESAMPLES]; + WebRtc_Word16 dataQ7[FRAMESAMPLES]; + WebRtc_Word32 PSpec[FRAMESAMPLES_QUARTER]; + WebRtc_Word32 invARSpec2_Q16[FRAMESAMPLES_QUARTER]; + WebRtc_UWord16 invARSpecQ8[FRAMESAMPLES_QUARTER]; + WebRtc_Word32 CorrQ7[AR_ORDER+1]; + WebRtc_Word32 CorrQ7_norm[AR_ORDER+1]; + WebRtc_Word16 RCQ15[AR_ORDER]; + WebRtc_Word16 ARCoefQ12[AR_ORDER+1]; + WebRtc_Word32 gain2_Q10; + WebRtc_Word16 val; + WebRtc_Word32 nrg, res; + WebRtc_UWord32 sum; + WebRtc_Word32 in_sqrt; + WebRtc_Word32 newRes; + WebRtc_Word16 err; + WebRtc_UWord32 nrg_u32; + int shift_var; + int k, n, j, i; + + /* create dither_float signal */ + GenerateDitherQ7LbUB(ditherQ7, streamdata->W_upper, FRAMESAMPLES); + + /* add dither and quantize, and compute power spectrum */ + for (j = 0, k = 0; k < FRAMESAMPLES; k += 4, j++) + { + val = ((fr[j] + ditherQ7[k] + 64) & 0xFF80) - ditherQ7[k]; + dataQ7[k] = val; + sum = val * val; + + val = ((fi[j] + ditherQ7[k+1] + 64) & 0xFF80) - ditherQ7[k+1]; + dataQ7[k+1] = val; + sum += val * val; + + val = ((fr[(FRAMESAMPLES_HALF) - 1 - j] + ditherQ7[k+2] + 64) & + 0xFF80) - ditherQ7[k+2]; + dataQ7[k+2] = val; + sum += val * val; + + val = ((fi[(FRAMESAMPLES_HALF) - 1 - j] + ditherQ7[k+3] + 64) & + 0xFF80) - ditherQ7[k+3]; + dataQ7[k+3] = val; + sum += val * val; + + PSpec[k>>2] = sum >> 2; + } + + /* compute correlation from power spectrum */ + WebRtcIsac_FindCorrelation(PSpec, CorrQ7); + + + /* find AR coefficients + number of bit shifts to 14-bit normalize CorrQ7[0] + (leaving room for sign) */ + shift_var = WebRtcSpl_NormW32(CorrQ7[0]) - 18; + + if (shift_var > 0) { + for (k=0; k> (-shift_var); + } + } + + /* find RC coefficients */ + WebRtcSpl_AutoCorrToReflCoef(CorrQ7_norm, AR_ORDER, RCQ15); + + /* quantize & code RC Coef */ + WebRtcIsac_EncodeRc(RCQ15, streamdata); + + /* RC -> AR coefficients */ + WebRtcSpl_ReflCoefToLpc(RCQ15, AR_ORDER, ARCoefQ12); + + /* compute ARCoef' * Corr * ARCoef in Q19 */ + nrg = 0; + for (j = 0; j <= AR_ORDER; j++) { + for (n = 0; n <= j; n++) { + nrg += ( ARCoefQ12[j] * ((CorrQ7_norm[j-n] * ARCoefQ12[n] + + 256) >> 9) + 4 ) >> 3; + } + for (n = j+1; n <= AR_ORDER; n++) { + nrg += ( ARCoefQ12[j] * ((CorrQ7_norm[n-j] * ARCoefQ12[n] + + 256) >> 9) + 4 ) >> 3; + } + } + nrg_u32 = (WebRtc_UWord32)nrg; + if (shift_var > 0) { + nrg_u32 = nrg_u32 >> shift_var; + } else { + nrg_u32 = nrg_u32 << (-shift_var); + } + + if (nrg_u32 > 0x7FFFFFFF) + nrg = 0x7FFFFFFF; + else + nrg = (WebRtc_Word32)nrg_u32; + + gain2_Q10 = WebRtcSpl_DivResultInQ31(FRAMESAMPLES_QUARTER, nrg); /* also shifts 31 bits to the left! */ + + /* quantize & code gain2_Q10 */ + if (WebRtcIsac_EncodeGain2(&gain2_Q10, streamdata)) { + return -1; + } + + /* compute inverse AR power spectrum */ + WebRtcIsac_FindInvArSpec(ARCoefQ12, gain2_Q10, invARSpec2_Q16); + + /* convert to magnitude spectrum, by doing square-roots (modified from SPLIB) */ + res = 1 << (WebRtcSpl_GetSizeInBits(invARSpec2_Q16[0]) >> 1); + for (k = 0; k < FRAMESAMPLES_QUARTER; k++) + { + in_sqrt = invARSpec2_Q16[k]; + i = 10; + + /* Negative values make no sense for a real sqrt-function. */ + if (in_sqrt<0) + in_sqrt=-in_sqrt; + + newRes = (in_sqrt / res + res) >> 1; + do + { + res = newRes; + newRes = (in_sqrt / res + res) >> 1; + } while (newRes != res && i-- > 0); + + invARSpecQ8[k] = (WebRtc_Word16)newRes; + } + + /* arithmetic coding of spectrum */ + err = WebRtcIsac_EncLogisticMulti2(streamdata, dataQ7, invARSpecQ8, + FRAMESAMPLES, !IS_SWB_12KHZ); + if (err < 0) + { + return (err); + } + + return 0; +} + + + + +int WebRtcIsac_EncodeSpecUB12(const WebRtc_Word16 *fr, + const WebRtc_Word16 *fi, + Bitstr *streamdata) +{ + WebRtc_Word16 ditherQ7[FRAMESAMPLES]; + WebRtc_Word16 dataQ7[FRAMESAMPLES]; + WebRtc_Word32 PSpec[FRAMESAMPLES_QUARTER]; + WebRtc_Word32 invARSpec2_Q16[FRAMESAMPLES_QUARTER]; + WebRtc_UWord16 invARSpecQ8[FRAMESAMPLES_QUARTER]; + WebRtc_Word32 CorrQ7[AR_ORDER+1]; + WebRtc_Word32 CorrQ7_norm[AR_ORDER+1]; + WebRtc_Word16 RCQ15[AR_ORDER]; + WebRtc_Word16 ARCoefQ12[AR_ORDER+1]; + WebRtc_Word32 gain2_Q10; + WebRtc_Word16 val; + WebRtc_Word32 nrg, res; + WebRtc_UWord32 sum; + WebRtc_Word32 in_sqrt; + WebRtc_Word32 newRes; + WebRtc_Word16 err; + int shift_var; + int k, n, j, i; + WebRtc_UWord32 nrg_u32; + + /* create dither_float signal */ + GenerateDitherQ7LbUB(ditherQ7, streamdata->W_upper, FRAMESAMPLES); + + /* add dither and quantize, and compute power spectrum */ + for (k = 0, j = 0; k < (FRAMESAMPLES_HALF); k += 4) + { + val = ((*fr++ + ditherQ7[k] + 64) & 0xFF80) - ditherQ7[k]; + dataQ7[k] = val; + sum = (val) * (val); + + val = ((*fi++ + ditherQ7[k+1] + 64) & 0xFF80) - ditherQ7[k+1]; + dataQ7[k+1] = val; + sum += (val) * (val); + + if(j < FRAMESAMPLES_QUARTER) + { + PSpec[j] = sum >> 1; + j++; + } + + val = ((*fr++ + ditherQ7[k+2] + 64) & 0xFF80) - ditherQ7[k+2]; + dataQ7[k+2] = val; + sum = (val) * (val); + + val = ((*fi++ + ditherQ7[k+3] + 64) & 0xFF80) - ditherQ7[k+3]; + dataQ7[k+3] = val; + sum += (val) * (val); + + if(j < FRAMESAMPLES_QUARTER) + { + PSpec[j] = sum >> 1; + j++; + } + } + /* compute correlation from power spectrum */ + WebRtcIsac_FindCorrelation(PSpec, CorrQ7); + + + /* find AR coefficients */ + /* number of bit shifts to 14-bit normalize CorrQ7[0] (leaving room for sign) */ + shift_var = WebRtcSpl_NormW32(CorrQ7[0]) - 18; + + if (shift_var > 0) { + for (k=0; k> (-shift_var); + } + } + + /* find RC coefficients */ + WebRtcSpl_AutoCorrToReflCoef(CorrQ7_norm, AR_ORDER, RCQ15); + + /* quantize & code RC Coef */ + WebRtcIsac_EncodeRc(RCQ15, streamdata); + + + /* RC -> AR coefficients */ + WebRtcSpl_ReflCoefToLpc(RCQ15, AR_ORDER, ARCoefQ12); + + + /* compute ARCoef' * Corr * ARCoef in Q19 */ + nrg = 0; + for (j = 0; j <= AR_ORDER; j++) { + for (n = 0; n <= j; n++) { + nrg += ( ARCoefQ12[j] * ((CorrQ7_norm[j-n] * ARCoefQ12[n] + 256) >> 9) + 4 ) >> 3; + } + for (n = j+1; n <= AR_ORDER; n++) { + nrg += ( ARCoefQ12[j] * ((CorrQ7_norm[n-j] * ARCoefQ12[n] + 256) >> 9) + 4 ) >> 3; + } + } + + nrg_u32 = (WebRtc_UWord32)nrg; + if (shift_var > 0) { + nrg_u32 = nrg_u32 >> shift_var; + } else { + nrg_u32 = nrg_u32 << (-shift_var); + } + + if (nrg_u32 > 0x7FFFFFFF) { + nrg = 0x7FFFFFFF; + } else { + nrg = (WebRtc_Word32)nrg_u32; + } + + gain2_Q10 = WebRtcSpl_DivResultInQ31(FRAMESAMPLES_QUARTER, nrg); /* also shifts 31 bits to the left! */ + + /* quantize & code gain2_Q10 */ + if (WebRtcIsac_EncodeGain2(&gain2_Q10, streamdata)) { + return -1; + } + + /* compute inverse AR power spectrum */ + WebRtcIsac_FindInvArSpec(ARCoefQ12, gain2_Q10, invARSpec2_Q16); + + /* convert to magnitude spectrum, by doing square-roots (modified from SPLIB) */ + res = 1 << (WebRtcSpl_GetSizeInBits(invARSpec2_Q16[0]) >> 1); + for (k = 0; k < FRAMESAMPLES_QUARTER; k++) + { + in_sqrt = invARSpec2_Q16[k]; + i = 10; + + /* Negative values make no sense for a real sqrt-function. */ + if (in_sqrt<0) + in_sqrt=-in_sqrt; + + newRes = (in_sqrt / res + res) >> 1; + do + { + res = newRes; + newRes = (in_sqrt / res + res) >> 1; + } while (newRes != res && i-- > 0); + + invARSpecQ8[k] = (WebRtc_Word16)newRes; + } + + /* arithmetic coding of spectrum */ + err = WebRtcIsac_EncLogisticMulti2(streamdata, dataQ7, invARSpecQ8, + (FRAMESAMPLES_HALF), IS_SWB_12KHZ); + if (err < 0) + { + return (err); + } + + return 0; +} + + + +/* step-up */ +void WebRtcIsac_Rc2Poly(double *RC, int N, double *a) +{ + int m, k; + double tmp[MAX_AR_MODEL_ORDER]; + + a[0] = 1.0; + tmp[0] = 1.0; + for (m=1; m<=N; m++) { + /* copy */ + for (k=1; k0; m--) { + tmp_inv = 1.0 / (1.0 - RC[m]*RC[m]); + for (k=1; k<=m; k++) + tmp[k] = (a[k] - RC[m] * a[m-k+1]) * tmp_inv; + + for (k=1; k WebRtcIsac_kQKltMaxIndGain[k]) + index_g[k] = WebRtcIsac_kQKltMaxIndGain[k]; + index_ovr_g[k] = WebRtcIsac_kQKltOffsetGain[bmodel][k]+index_g[k]; + pos = WebRtcIsac_kQKltOfLevelsGain[bmodel] + index_ovr_g[k]; + + /* determine number of bits */ + sum = WebRtcIsac_kQKltCodeLenGain[pos]; + Bits += sum; + } + + for (k=0; k WebRtcIsac_kQKltMaxIndShape[k]) + index_s[k] = WebRtcIsac_kQKltMaxIndShape[k]; + index_ovr_s[k] = WebRtcIsac_kQKltOffsetShape[bmodel][k]+index_s[k]; + pos = WebRtcIsac_kQKltOfLevelsShape[bmodel] + index_ovr_s[k]; + sum = WebRtcIsac_kQKltCodeLenShape[pos]; + Bits += sum; + } + + + /* Only one model remains in this version of the code, model = 0 */ + *model=bmodel; + *size=Bits; + + /* entropy coding of model number */ + WebRtcIsac_EncHistMulti(streamdata, model, WebRtcIsac_kQKltModelCdfPtr, 1); + + /* entropy coding of quantization indices - shape only */ + WebRtcIsac_EncHistMulti(streamdata, index_s, WebRtcIsac_kQKltCdfPtrShape[bmodel], KLT_ORDER_SHAPE); + + /* Save data for creation of multiple bit streams */ + encData->LPCmodel[encData->startIdx] = 0; + for (k=0; kLPCindex_s[KLT_ORDER_SHAPE*encData->startIdx + k] = index_s[k]; + } + + /* find quantization levels for shape coefficients */ + for (k=0; kLPCcoeffs_lo[(ORDERLO+1)*SUBFRAMES*encData->startIdx + k] = LPCCoef_lo[k]; + } + for (k=0; k<(ORDERHI+1)*SUBFRAMES; k++) { + encData->LPCcoeffs_hi[(ORDERHI+1)*SUBFRAMES*encData->startIdx + k] = LPCCoef_hi[k]; + } +} + + +WebRtc_Word16 +WebRtcIsac_EncodeLpcUB( + double* lpcVecs, + Bitstr* streamdata, + double* interpolLPCCoeff, + WebRtc_Word16 bandwidth, + ISACUBSaveEncDataStruct* encData) +{ + + double U[UB_LPC_ORDER * UB16_LPC_VEC_PER_FRAME]; + int idx[UB_LPC_ORDER * UB16_LPC_VEC_PER_FRAME]; + int interpolCntr; + + WebRtcIsac_Poly2LarUB(lpcVecs, bandwidth); + WebRtcIsac_RemoveLarMean(lpcVecs, bandwidth); + WebRtcIsac_DecorrelateIntraVec(lpcVecs, U, bandwidth); + WebRtcIsac_DecorrelateInterVec(U, lpcVecs, bandwidth); + WebRtcIsac_QuantizeUncorrLar(lpcVecs, idx, bandwidth); + + WebRtcIsac_CorrelateInterVec(lpcVecs, U, bandwidth); + WebRtcIsac_CorrelateIntraVec(U, lpcVecs, bandwidth); + WebRtcIsac_AddLarMean(lpcVecs, bandwidth); + + switch(bandwidth) + { + case isac12kHz: + { + // Stor the indices to be used for multiple encoding. + memcpy(encData->indexLPCShape, idx, UB_LPC_ORDER * UB_LPC_VEC_PER_FRAME * + sizeof(int)); + WebRtcIsac_EncHistMulti(streamdata, idx, WebRtcIsac_kLpcShapeCdfMatUb12, + UB_LPC_ORDER * UB_LPC_VEC_PER_FRAME); + for(interpolCntr = 0; interpolCntr < UB_INTERPOL_SEGMENTS; interpolCntr++) + { + WebRtcIsac_Lar2PolyInterpolUB(lpcVecs, + interpolLPCCoeff, kLpcVecPerSegmentUb12 + 1); + lpcVecs += UB_LPC_ORDER; + interpolLPCCoeff += (kLpcVecPerSegmentUb12 * (UB_LPC_ORDER + 1)); + } + break; + } + case isac16kHz: + { + // Stor the indices to be used for multiple encoding. + memcpy(encData->indexLPCShape, idx, UB_LPC_ORDER * UB16_LPC_VEC_PER_FRAME * + sizeof(int)); + WebRtcIsac_EncHistMulti(streamdata, idx, WebRtcIsac_kLpcShapeCdfMatUb16, + UB_LPC_ORDER * UB16_LPC_VEC_PER_FRAME); + for(interpolCntr = 0; interpolCntr < UB16_INTERPOL_SEGMENTS; interpolCntr++) + { + WebRtcIsac_Lar2PolyInterpolUB(lpcVecs, + interpolLPCCoeff, kLpcVecPerSegmentUb16 + 1); + lpcVecs += UB_LPC_ORDER; + interpolLPCCoeff += (kLpcVecPerSegmentUb16 * (UB_LPC_ORDER + 1)); + } + break; + } + default: + return -1; + } + return 0; +} + +void WebRtcIsac_EncodeLpcGainLb(double *LPCCoef_lo, double *LPCCoef_hi, int model, Bitstr *streamdata, ISAC_SaveEncData_t* encData) { + + int j, k, n, pos, pos2, posg, offsg, offs2; + int index_g[KLT_ORDER_GAIN]; + int index_ovr_g[KLT_ORDER_GAIN]; + double tmpcoeffs_g[KLT_ORDER_GAIN]; + double tmpcoeffs2_g[KLT_ORDER_GAIN]; + double sum; + + /* log gains, mean removal and scaling */ + posg = 0; + for (k=0; k WebRtcIsac_kQKltMaxIndGain[k]) { + index_g[k] = WebRtcIsac_kQKltMaxIndGain[k]; + } + index_ovr_g[k] = WebRtcIsac_kQKltOffsetGain[model][k]+index_g[k]; + + /* find quantization levels for coefficients */ + tmpcoeffs_g[WebRtcIsac_kQKltSelIndGain[k]] = WebRtcIsac_kQKltLevelsGain[WebRtcIsac_kQKltOfLevelsGain[model]+index_ovr_g[k]]; + + /* Save data for creation of multiple bit streams */ + encData->LPCindex_g[KLT_ORDER_GAIN*encData->startIdx + k] = index_g[k]; + } + + + /* entropy coding of quantization indices - gain */ + WebRtcIsac_EncHistMulti(streamdata, index_g, WebRtcIsac_kQKltCdfPtrGain[model], KLT_ORDER_GAIN); + + /* find quantization levels for coefficients */ + + /* left transform */ + offsg = 0; + posg = 0; + for (j=0; j WebRtcIsac_kQArBoundaryLevels[index[k]]) + { + while (RCQ15[k] > WebRtcIsac_kQArBoundaryLevels[index[k] + 1]) + index[k]++; + } + else + { + while (RCQ15[k] < WebRtcIsac_kQArBoundaryLevels[--index[k]]) ; + } + + RCQ15[k] = *(WebRtcIsac_kQArRcLevelsPtr[k] + index[k]); + } + + + /* entropy coding of quantization indices */ + WebRtcIsac_EncHistMulti(streamdata, index, WebRtcIsac_kQArRcCdfPtr, AR_ORDER); +} + + +/* decode & dequantize squared Gain */ +int WebRtcIsac_DecodeGain2(Bitstr *streamdata, WebRtc_Word32 *gainQ10) +{ + int index, err; + + /* entropy decoding of quantization index */ + err = WebRtcIsac_DecHistOneStepMulti(&index, streamdata, WebRtcIsac_kQGainCdf_ptr, + WebRtcIsac_kQGainInitIndex, 1); + if (err<0) // error check + return err; + + /* find quantization level */ + *gainQ10 = WebRtcIsac_kQGain2Levels[index]; + + return 0; +} + + + +/* quantize & code squared Gain */ +int WebRtcIsac_EncodeGain2(WebRtc_Word32 *gainQ10, Bitstr *streamdata) +{ + int index; + + + /* find quantization index */ + index = WebRtcIsac_kQGainInitIndex[0]; + if (*gainQ10 > WebRtcIsac_kQGain2BoundaryLevels[index]) + { + while (*gainQ10 > WebRtcIsac_kQGain2BoundaryLevels[index + 1]) + index++; + } + else + { + while (*gainQ10 < WebRtcIsac_kQGain2BoundaryLevels[--index]) ; + } + + /* dequantize */ + *gainQ10 = WebRtcIsac_kQGain2Levels[index]; + + + /* entropy coding of quantization index */ + WebRtcIsac_EncHistMulti(streamdata, &index, WebRtcIsac_kQGainCdf_ptr, 1); + + return 0; +} + + +/* code and decode Pitch Gains and Lags functions */ + +/* decode & dequantize Pitch Gains */ +int WebRtcIsac_DecodePitchGain(Bitstr *streamdata, WebRtc_Word16 *PitchGains_Q12) +{ + int index_comb, err; + const WebRtc_UWord16 *WebRtcIsac_kQPitchGainCdf_ptr[1]; + + /* entropy decoding of quantization indices */ + *WebRtcIsac_kQPitchGainCdf_ptr = WebRtcIsac_kQPitchGainCdf; + err = WebRtcIsac_DecHistBisectMulti(&index_comb, streamdata, WebRtcIsac_kQPitchGainCdf_ptr, WebRtcIsac_kQCdfTableSizeGain, 1); + /* error check, Q_mean_Gain.. tables are of size 144 */ + if ((err<0) || (index_comb<0) || (index_comb>144)) + return -ISAC_RANGE_ERROR_DECODE_PITCH_GAIN; + + /* unquantize back to pitch gains by table look-up */ + PitchGains_Q12[0] = WebRtcIsac_kQMeanGain1Q12[index_comb]; + PitchGains_Q12[1] = WebRtcIsac_kQMeanGain2Q12[index_comb]; + PitchGains_Q12[2] = WebRtcIsac_kQMeanGain3Q12[index_comb]; + PitchGains_Q12[3] = WebRtcIsac_kQMeanGain4Q12[index_comb]; + + return 0; +} + + +/* quantize & code Pitch Gains */ +void WebRtcIsac_EncodePitchGain(WebRtc_Word16 *PitchGains_Q12, Bitstr *streamdata, ISAC_SaveEncData_t* encData) +{ + int k,j; + double C; + double S[PITCH_SUBFRAMES]; + int index[3]; + int index_comb; + const WebRtc_UWord16 *WebRtcIsac_kQPitchGainCdf_ptr[1]; + double PitchGains[PITCH_SUBFRAMES] = {0,0,0,0}; + + /* take the asin */ + for (k=0; k WebRtcIsac_kIndexUpperLimitGain[k]) index[k] = WebRtcIsac_kIndexUpperLimitGain[k]; + index[k] -= WebRtcIsac_kIndexLowerLimitGain[k]; + } + + /* calculate unique overall index */ + index_comb = WebRtcIsac_kIndexMultsGain[0] * index[0] + WebRtcIsac_kIndexMultsGain[1] * index[1] + index[2]; + + /* unquantize back to pitch gains by table look-up */ + PitchGains_Q12[0] = WebRtcIsac_kQMeanGain1Q12[index_comb]; + PitchGains_Q12[1] = WebRtcIsac_kQMeanGain2Q12[index_comb]; + PitchGains_Q12[2] = WebRtcIsac_kQMeanGain3Q12[index_comb]; + PitchGains_Q12[3] = WebRtcIsac_kQMeanGain4Q12[index_comb]; + + /* entropy coding of quantization pitch gains */ + *WebRtcIsac_kQPitchGainCdf_ptr = WebRtcIsac_kQPitchGainCdf; + WebRtcIsac_EncHistMulti(streamdata, &index_comb, WebRtcIsac_kQPitchGainCdf_ptr, 1); + encData->pitchGain_index[encData->startIdx] = index_comb; + +} + + + +/* Pitch LAG */ + + +/* decode & dequantize Pitch Lags */ +int WebRtcIsac_DecodePitchLag(Bitstr *streamdata, WebRtc_Word16 *PitchGain_Q12, double *PitchLags) +{ + int k, err; + double StepSize; + double C; + int index[PITCH_SUBFRAMES]; + double mean_gain; + const double *mean_val2, *mean_val3, *mean_val4; + const WebRtc_Word16 *lower_limit; + const WebRtc_UWord16 *init_index; + const WebRtc_UWord16 *cdf_size; + const WebRtc_UWord16 **cdf; + + //(Y) + double PitchGain[4]={0,0,0,0}; + // + + /* compute mean pitch gain */ + mean_gain = 0.0; + for (k = 0; k < 4; k++) + { + //(Y) + PitchGain[k] = ((float)PitchGain_Q12[k])/4096; + //(Y) + mean_gain += PitchGain[k]; + } + mean_gain /= 4.0; + + /* voicing classificiation */ + if (mean_gain < 0.2) { + StepSize = WebRtcIsac_kQPitchLagStepsizeLo; + cdf = WebRtcIsac_kQPitchLagCdfPtrLo; + cdf_size = WebRtcIsac_kQPitchLagCdfSizeLo; + mean_val2 = WebRtcIsac_kQMeanLag2Lo; + mean_val3 = WebRtcIsac_kQMeanLag3Lo; + mean_val4 = WebRtcIsac_kQMeanLag4Lo; + lower_limit = WebRtcIsac_kQIndexLowerLimitLagLo; + init_index = WebRtcIsac_kQInitIndexLagLo; + } else if (mean_gain < 0.4) { + StepSize = WebRtcIsac_kQPitchLagStepsizeMid; + cdf = WebRtcIsac_kQPitchLagCdfPtrMid; + cdf_size = WebRtcIsac_kQPitchLagCdfSizeMid; + mean_val2 = WebRtcIsac_kQMeanLag2Mid; + mean_val3 = WebRtcIsac_kQMeanLag3Mid; + mean_val4 = WebRtcIsac_kQMeanLag4Mid; + lower_limit = WebRtcIsac_kQIndexLowerLimitLagMid; + init_index = WebRtcIsac_kQInitIndexLagMid; + } else { + StepSize = WebRtcIsac_kQPitchLagStepsizeHi; + cdf = WebRtcIsac_kQPitchLagCdfPtrHi; + cdf_size = WebRtcIsac_kQPitchLagCdfSizeHi; + mean_val2 = WebRtcIsac_kQMeanLag2Hi; + mean_val3 = WebRtcIsac_kQMeanLag3Hi; + mean_val4 = WebRtcIsac_kQMeanLag4Hi; + lower_limit = WebRtcIsac_kQindexLowerLimitLagHi; + init_index = WebRtcIsac_kQInitIndexLagHi; + } + + /* entropy decoding of quantization indices */ + err = WebRtcIsac_DecHistBisectMulti(index, streamdata, cdf, cdf_size, 1); + if ((err<0) || (index[0]<0)) // error check + return -ISAC_RANGE_ERROR_DECODE_PITCH_LAG; + + err = WebRtcIsac_DecHistOneStepMulti(index+1, streamdata, cdf+1, init_index, 3); + if (err<0) // error check + return -ISAC_RANGE_ERROR_DECODE_PITCH_LAG; + + + /* unquantize back to transform coefficients and do the inverse transform: S = T'*C */ + C = (index[0] + lower_limit[0]) * StepSize; + for (k=0; kmeanGain[encData->startIdx] = mean_gain; + + /* voicing classification */ + if (mean_gain < 0.2) { + StepSize = WebRtcIsac_kQPitchLagStepsizeLo; + cdf = WebRtcIsac_kQPitchLagCdfPtrLo; + mean_val2 = WebRtcIsac_kQMeanLag2Lo; + mean_val3 = WebRtcIsac_kQMeanLag3Lo; + mean_val4 = WebRtcIsac_kQMeanLag4Lo; + lower_limit = WebRtcIsac_kQIndexLowerLimitLagLo; + upper_limit = WebRtcIsac_kQIndexUpperLimitLagLo; + } else if (mean_gain < 0.4) { + StepSize = WebRtcIsac_kQPitchLagStepsizeMid; + cdf = WebRtcIsac_kQPitchLagCdfPtrMid; + mean_val2 = WebRtcIsac_kQMeanLag2Mid; + mean_val3 = WebRtcIsac_kQMeanLag3Mid; + mean_val4 = WebRtcIsac_kQMeanLag4Mid; + lower_limit = WebRtcIsac_kQIndexLowerLimitLagMid; + upper_limit = WebRtcIsac_kQIndexUpperLimitLagMid; + } else { + StepSize = WebRtcIsac_kQPitchLagStepsizeHi; + cdf = WebRtcIsac_kQPitchLagCdfPtrHi; + mean_val2 = WebRtcIsac_kQMeanLag2Hi; + mean_val3 = WebRtcIsac_kQMeanLag3Hi; + mean_val4 = WebRtcIsac_kQMeanLag4Hi; + lower_limit = WebRtcIsac_kQindexLowerLimitLagHi; + upper_limit = WebRtcIsac_kQindexUpperLimitLagHi; + } + + + /* find quantization index */ + for (k=0; k<4; k++) + { + /* transform */ + C = 0.0; + for (j=0; j upper_limit[k]) index[k] = upper_limit[k]; + index[k] -= lower_limit[k]; + + /* Save data for creation of multiple bit streams */ + encData->pitchIndex[PITCH_SUBFRAMES*encData->startIdx + k] = index[k]; + } + + /* unquantize back to transform coefficients and do the inverse transform: S = T'*C */ + C = (index[0] + lower_limit[0]) * StepSize; + for (k=0; k WebRtcIsac_kQKltMaxIndGain[k]) { + index_g[k] = WebRtcIsac_kQKltMaxIndGain[k]; + } + index_ovr_g[k] = WebRtcIsac_kQKltOffsetGain[model][k]+index_g[k]; + + /* find quantization levels for coefficients */ + tmpcoeffs_g[WebRtcIsac_kQKltSelIndGain[k]] = WebRtcIsac_kQKltLevelsGain[WebRtcIsac_kQKltOfLevelsGain[model]+index_ovr_g[k]]; + } +} + + +/* decode & dequantize LPC Coef */ +int +WebRtcIsac_DecodeLpcCoefUB( + Bitstr* streamdata, + double* lpcVecs, + double* percepFilterGains, + WebRtc_Word16 bandwidth) +{ + int index_s[KLT_ORDER_SHAPE]; + + double U[UB_LPC_ORDER * UB16_LPC_VEC_PER_FRAME]; + int err; + + /* entropy decoding of quantization indices */ + switch(bandwidth) + { + case isac12kHz: + { + err = WebRtcIsac_DecHistOneStepMulti(index_s, streamdata, + WebRtcIsac_kLpcShapeCdfMatUb12, WebRtcIsac_kLpcShapeEntropySearchUb12, + UB_LPC_ORDER * UB_LPC_VEC_PER_FRAME); + break; + } + case isac16kHz: + { + err = WebRtcIsac_DecHistOneStepMulti(index_s, streamdata, + WebRtcIsac_kLpcShapeCdfMatUb16, WebRtcIsac_kLpcShapeEntropySearchUb16, + UB_LPC_ORDER * UB16_LPC_VEC_PER_FRAME); + break; + } + default: + return -1; + } + + if (err<0) // error check + { + return err; + } + + WebRtcIsac_DequantizeLpcParam(index_s, lpcVecs, bandwidth); + WebRtcIsac_CorrelateInterVec(lpcVecs, U, bandwidth); + WebRtcIsac_CorrelateIntraVec(U, lpcVecs, bandwidth); + WebRtcIsac_AddLarMean(lpcVecs, bandwidth); + + + WebRtcIsac_DecodeLpcGainUb(percepFilterGains, streamdata); + + if(bandwidth == isac16kHz) + { + // decode another set of Gains + WebRtcIsac_DecodeLpcGainUb(&percepFilterGains[SUBFRAMES], streamdata); + } + + return 0; +} + +WebRtc_Word16 +WebRtcIsac_EncodeBandwidth( + enum ISACBandwidth bandwidth, + Bitstr* streamData) +{ + int bandwidthMode; + switch(bandwidth) + { + case isac12kHz: + { + bandwidthMode = 0; + break; + } + case isac16kHz: + { + bandwidthMode = 1; + break; + } + default: + return -ISAC_DISALLOWED_ENCODER_BANDWIDTH; + } + + WebRtcIsac_EncHistMulti(streamData, &bandwidthMode, + kOneBitEqualProbCdf_ptr, 1); + return 0; +} + +WebRtc_Word16 +WebRtcIsac_DecodeBandwidth( + Bitstr* streamData, + enum ISACBandwidth* bandwidth) +{ + int bandwidthMode; + + if(WebRtcIsac_DecHistOneStepMulti(&bandwidthMode, streamData, + kOneBitEqualProbCdf_ptr, + kOneBitEqualProbInitIndex, 1) < 0) + { + // error check + return -ISAC_RANGE_ERROR_DECODE_BANDWITH; + } + + switch(bandwidthMode) + { + case 0: + { + *bandwidth = isac12kHz; + break; + } + case 1: + { + *bandwidth = isac16kHz; + break; + } + default: + return -ISAC_DISALLOWED_BANDWIDTH_MODE_DECODER; + } + return 0; +} + +WebRtc_Word16 +WebRtcIsac_EncodeJitterInfo( + WebRtc_Word32 jitterIndex, + Bitstr* streamData) +{ + // This is to avoid LINUX warning until we change 'int' to + // 'Word32' + int intVar; + + if((jitterIndex < 0) || (jitterIndex > 1)) + { + return -1; + } + intVar = (int)(jitterIndex); + // Use the same CDF table as for bandwidth + // both take two values with equal probability + WebRtcIsac_EncHistMulti(streamData, &intVar, + kOneBitEqualProbCdf_ptr, 1); + return 0; + +} + +WebRtc_Word16 +WebRtcIsac_DecodeJitterInfo( + Bitstr* streamData, + WebRtc_Word32* jitterInfo) +{ + int intVar; + + // Use the same CDF table as for bandwidth + // both take two values with equal probability + if(WebRtcIsac_DecHistOneStepMulti(&intVar, streamData, + kOneBitEqualProbCdf_ptr, + kOneBitEqualProbInitIndex, 1) < 0) + { + // error check + return -ISAC_RANGE_ERROR_DECODE_BANDWITH; + } + *jitterInfo = (WebRtc_Word16)(intVar); + return 0; +} diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/entropy_coding.h.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/entropy_coding.h.svn-base new file mode 100644 index 0000000000..8446bcf3e5 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/entropy_coding.h.svn-base @@ -0,0 +1,412 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * entropy_coding.h + * + * This header file declares all of the functions used to arithmetically + * encode the iSAC bistream + * + */ + +#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_ENTROPY_CODING_H_ +#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_ENTROPY_CODING_H_ + +#include "structs.h" + +/* decode complex spectrum (return number of bytes in stream) */ +int WebRtcIsac_DecodeSpecLb(Bitstr *streamdata, + double *fr, + double *fi, + WebRtc_Word16 AvgPitchGain_Q12); + +/****************************************************************************** + * WebRtcIsac_DecodeSpecUB16() + * Decode real and imaginary part of the DFT coefficients, given a bit-stream. + * This function is called when the codec is in 0-16 kHz bandwidth. + * The decoded DFT coefficient can be transformed to time domain by + * WebRtcIsac_Time2Spec(). + * + * Input: + * - streamdata : pointer to a stucture containg the encoded + * data and theparameters needed for entropy + * coding. + * + * Output: + * -*fr : pointer to a buffer where the real part of DFT + * coefficients are written to. + * -*fi : pointer to a buffer where the imaginary part + * of DFT coefficients are written to. + * + * Return value : < 0 if an error occures + * 0 if succeeded. + */ +int WebRtcIsac_DecodeSpecUB16( + Bitstr* streamdata, + double* fr, + double* fi); + + +/****************************************************************************** + * WebRtcIsac_DecodeSpecUB12() + * Decode real and imaginary part of the DFT coefficients, given a bit-stream. + * This function is called when the codec is in 0-12 kHz bandwidth. + * The decoded DFT coefficient can be transformed to time domain by + * WebRtcIsac_Time2Spec(). + * + * Input: + * - streamdata : pointer to a stucture containg the encoded + * data and theparameters needed for entropy + * coding. + * + * Output: + * -*fr : pointer to a buffer where the real part of DFT + * coefficients are written to. + * -*fi : pointer to a buffer where the imaginary part + * of DFT coefficients are written to. + * + * Return value : < 0 if an error occures + * 0 if succeeded. + */ +int WebRtcIsac_DecodeSpecUB12( + Bitstr* streamdata, + double* fr, + double* fi); + + +/* encode complex spectrum */ +int WebRtcIsac_EncodeSpecLb(const WebRtc_Word16* fr, + const WebRtc_Word16* fi, + Bitstr* streamdata, + WebRtc_Word16 AvgPitchGain_Q12); + + +/****************************************************************************** + * WebRtcIsac_EncodeSpecUB16() + * Quantize and encode real and imaginary part of the DFT coefficients. + * This function is called when the codec is in 0-16 kHz bandwidth. + * The real and imaginary part are computed by calling WebRtcIsac_Time2Spec(). + * + * + * Input: + * -*fr : pointer to a buffer where the real part of DFT + * coefficients are stored. + * -*fi : pointer to a buffer where the imaginary part + * of DFT coefficients are stored. + * + * Output: + * - streamdata : pointer to a stucture containg the encoded + * data and theparameters needed for entropy + * coding. + * + * Return value : < 0 if an error occures + * 0 if succeeded. + */ +int WebRtcIsac_EncodeSpecUB16( + const WebRtc_Word16* fr, + const WebRtc_Word16* fi, + Bitstr* streamdata); + + +/****************************************************************************** + * WebRtcIsac_EncodeSpecUB12() + * Quantize and encode real and imaginary part of the DFT coefficients. + * This function is called when the codec is in 0-12 kHz bandwidth. + * The real and imaginary part are computed by calling WebRtcIsac_Time2Spec(). + * + * + * Input: + * -*fr : pointer to a buffer where the real part of DFT + * coefficients are stored. + * -*fi : pointer to a buffer where the imaginary part + * of DFT coefficients are stored. + * + * Output: + * - streamdata : pointer to a stucture containg the encoded + * data and theparameters needed for entropy + * coding. + * + * Return value : < 0 if an error occures + * 0 if succeeded. + */ +int WebRtcIsac_EncodeSpecUB12( + const WebRtc_Word16* fr, + const WebRtc_Word16* fi, + Bitstr* streamdata); + + +/* decode & dequantize LPC Coef */ +int WebRtcIsac_DecodeLpcCoef(Bitstr *streamdata, double *LPCCoef, int *outmodel); +int WebRtcIsac_DecodeLpcCoefUB( + Bitstr* streamdata, + double* lpcVecs, + double* percepFilterGains, + WebRtc_Word16 bandwidth); + +int WebRtcIsac_DecodeLpc(Bitstr *streamdata, double *LPCCoef_lo, double *LPCCoef_hi, int *outmodel); + +/* quantize & code LPC Coef */ +void WebRtcIsac_EncodeLpcLb(double *LPCCoef_lo, double *LPCCoef_hi, int *model, double *size, Bitstr *streamdata, ISAC_SaveEncData_t* encData); +void WebRtcIsac_EncodeLpcGainLb(double *LPCCoef_lo, double *LPCCoef_hi, int model, Bitstr *streamdata, ISAC_SaveEncData_t* encData); + +/****************************************************************************** + * WebRtcIsac_EncodeLpcUB() + * Encode LPC parameters, given as A-polynomial, of upper-band. The encoding + * is performed in LAR domain. + * For the upper-band, we compute and encode LPC of some sub-frames, LPC of + * other sub-frames are computed by linear interpolation, in LAR domain. This + * function performs the interpolation and returns the LPC of all sub-frames. + * + * Inputs: + * - lpcCoef : a buffer containing A-polynomials of sub-frames + * (excluding first coefficient that is 1). + * - bandwidth : specifies if the codec is operating at 0-12 kHz + * or 0-16 kHz mode. + * + * Input/output: + * - streamdata : pointer to a stucture containg the encoded + * data and theparameters needed for entropy + * coding. + * + * Output: + * - interpolLPCCoeff : Decoded and interpolated LPC (A-polynomial) + * of all sub-frames. + * If LP analysis is of order K, and there are N + * sub-frames then this is a buffer of size + * (k + 1) * N, each vector starts with the LPC gain + * of the corresponding sub-frame. The LPC gains + * are encoded and inserted after this function is + * called. The first A-coefficient which is 1 is not + * included. + * + * Return value : 0 if encoding is successful, + * <0 if failed to encode. + */ +WebRtc_Word16 WebRtcIsac_EncodeLpcUB( + double* lpcCoeff, + Bitstr* streamdata, + double* interpolLPCCoeff, + WebRtc_Word16 bandwidth, + ISACUBSaveEncDataStruct* encData); + +/****************************************************************************** + * WebRtcIsac_DecodeInterpolLpcUb() + * Decode LPC coefficients and interpolate to get the coefficients fo all + * sub-frmaes. + * + * Inputs: + * - bandwidth : spepecifies if the codec is in 0-12 kHz or + * 0-16 kHz mode. + * + * Input/output: + * - streamdata : pointer to a stucture containg the encoded + * data and theparameters needed for entropy + * coding. + * + * Output: + * - percepFilterParam : Decoded and interpolated LPC (A-polynomial) of + * all sub-frames. + * If LP analysis is of order K, and there are N + * sub-frames then this is a buffer of size + * (k + 1) * N, each vector starts with the LPC gain + * of the corresponding sub-frame. The LPC gains + * are encoded and inserted after this function is + * called. The first A-coefficient which is 1 is not + * included. + * + * Return value : 0 if encoding is successful, + * <0 if failed to encode. + */ +WebRtc_Word16 WebRtcIsac_DecodeInterpolLpcUb( + Bitstr* streamdata, + double* percepFilterParam, + WebRtc_Word16 bandwidth); + +/* decode & dequantize RC */ +int WebRtcIsac_DecodeRc(Bitstr *streamdata, WebRtc_Word16 *RCQ15); + +/* quantize & code RC */ +void WebRtcIsac_EncodeRc(WebRtc_Word16 *RCQ15, Bitstr *streamdata); + +/* decode & dequantize squared Gain */ +int WebRtcIsac_DecodeGain2(Bitstr *streamdata, WebRtc_Word32 *Gain2); + +/* quantize & code squared Gain (input is squared gain) */ +int WebRtcIsac_EncodeGain2(WebRtc_Word32 *gain2, Bitstr *streamdata); + +void WebRtcIsac_EncodePitchGain(WebRtc_Word16* PitchGains_Q12, Bitstr* streamdata, ISAC_SaveEncData_t* encData); + +void WebRtcIsac_EncodePitchLag(double* PitchLags, WebRtc_Word16* PitchGain_Q12, Bitstr* streamdata, ISAC_SaveEncData_t* encData); + +int WebRtcIsac_DecodePitchGain(Bitstr *streamdata, WebRtc_Word16 *PitchGain_Q12); +int WebRtcIsac_DecodePitchLag(Bitstr *streamdata, WebRtc_Word16 *PitchGain_Q12, double *PitchLag); + +int WebRtcIsac_DecodeFrameLen(Bitstr *streamdata, WebRtc_Word16 *framelength); +int WebRtcIsac_EncodeFrameLen(WebRtc_Word16 framelength, Bitstr *streamdata); +int WebRtcIsac_DecodeSendBW(Bitstr *streamdata, WebRtc_Word16 *BWno); +void WebRtcIsac_EncodeReceiveBw(int *BWno, Bitstr *streamdata); + +/* step-down */ +void WebRtcIsac_Poly2Rc(double *a, int N, double *RC); + +/* step-up */ +void WebRtcIsac_Rc2Poly(double *RC, int N, double *a); + +void WebRtcIsac_TranscodeLPCCoef(double *LPCCoef_lo, double *LPCCoef_hi, int model, + int *index_g); + + +/****************************************************************************** + * WebRtcIsac_EncodeLpcGainUb() + * Encode LPC gains of sub-Frames. + * + * Input/outputs: + * - lpGains : a buffer which contains 'SUBFRAME' number of + * LP gains to be encoded. The input values are + * overwritten by the quantized values. + * - streamdata : pointer to a stucture containg the encoded + * data and theparameters needed for entropy + * coding. + * + * Output: + * - lpcGainIndex : quantization indices for lpc gains, these will + * be stored to be used for FEC. + */ +void WebRtcIsac_EncodeLpcGainUb( + double* lpGains, + Bitstr* streamdata, + int* lpcGainIndex); + + +/****************************************************************************** + * WebRtcIsac_EncodeLpcGainUb() + * Store LPC gains of sub-Frames in 'streamdata'. + * + * Input: + * - lpGains : a buffer which contains 'SUBFRAME' number of + * LP gains to be encoded. + * Input/outputs: + * - streamdata : pointer to a stucture containg the encoded + * data and theparameters needed for entropy + * coding. + * + */ +void WebRtcIsac_StoreLpcGainUb( + double* lpGains, + Bitstr* streamdata); + + +/****************************************************************************** + * WebRtcIsac_DecodeLpcGainUb() + * Decode the LPC gain of sub-frames. + * + * Input/output: + * - streamdata : pointer to a stucture containg the encoded + * data and theparameters needed for entropy + * coding. + * + * Output: + * - lpGains : a buffer where decoded LPC gians will be stored. + * + * Return value : 0 if succeeded. + * <0 if failed. + */ +WebRtc_Word16 WebRtcIsac_DecodeLpcGainUb( + double* lpGains, + Bitstr* streamdata); + + +/****************************************************************************** + * WebRtcIsac_EncodeBandwidth() + * Encode if the bandwidth of encoded audio is 0-12 kHz or 0-16 kHz. + * + * Input: + * - bandwidth : an enumerator specifying if the codec in is + * 0-12 kHz or 0-16 kHz mode. + * + * Input/output: + * - streamdata : pointer to a stucture containg the encoded + * data and theparameters needed for entropy + * coding. + * + * Return value : 0 if succeeded. + * <0 if failed. + */ +WebRtc_Word16 WebRtcIsac_EncodeBandwidth( + enum ISACBandwidth bandwidth, + Bitstr* streamData); + + +/****************************************************************************** + * WebRtcIsac_DecodeBandwidth() + * Decode the bandwidth of the encoded audio, i.e. if the bandwidth is 0-12 kHz + * or 0-16 kHz. + * + * Input/output: + * - streamdata : pointer to a stucture containg the encoded + * data and theparameters needed for entropy + * coding. + * + * Output: + * - bandwidth : an enumerator specifying if the codec is in + * 0-12 kHz or 0-16 kHz mode. + * + * Return value : 0 if succeeded. + * <0 if failed. + */ +WebRtc_Word16 WebRtcIsac_DecodeBandwidth( + Bitstr* streamData, + enum ISACBandwidth* bandwidth); + + +/****************************************************************************** + * WebRtcIsac_EncodeJitterInfo() + * Decode the jitter information. + * + * Input/output: + * - streamdata : pointer to a stucture containg the encoded + * data and theparameters needed for entropy + * coding. + * + * Input: + * - jitterInfo : one bit of info specifying if the channel is + * in high/low jitter. Zero indicates low jitter + * and one indicates high jitter. + * + * Return value : 0 if succeeded. + * <0 if failed. + */ +WebRtc_Word16 WebRtcIsac_EncodeJitterInfo( + WebRtc_Word32 jitterIndex, + Bitstr* streamData); + + +/****************************************************************************** + * WebRtcIsac_DecodeJitterInfo() + * Decode the jitter information. + * + * Input/output: + * - streamdata : pointer to a stucture containg the encoded + * data and theparameters needed for entropy + * coding. + * + * Output: + * - jitterInfo : one bit of info specifying if the channel is + * in high/low jitter. Zero indicates low jitter + * and one indicates high jitter. + * + * Return value : 0 if succeeded. + * <0 if failed. + */ +WebRtc_Word16 WebRtcIsac_DecodeJitterInfo( + Bitstr* streamData, + WebRtc_Word32* jitterInfo); + +#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_ENTROPY_CODING_H_ */ diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/fft.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/fft.c.svn-base new file mode 100644 index 0000000000..c8247983aa --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/fft.c.svn-base @@ -0,0 +1,947 @@ +/* + * Copyright(c)1995,97 Mark Olesen + * Queen's Univ at Kingston (Canada) + * + * Permission to use, copy, modify, and distribute this software for + * any purpose without fee is hereby granted, provided that this + * entire notice is included in all copies of any software which is + * or includes a copy or modification of this software and in all + * copies of the supporting documentation for such software. + * + * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR + * IMPLIED WARRANTY. IN PARTICULAR, NEITHER THE AUTHOR NOR QUEEN'S + * UNIVERSITY AT KINGSTON MAKES ANY REPRESENTATION OR WARRANTY OF ANY + * KIND CONCERNING THE MERCHANTABILITY OF THIS SOFTWARE OR ITS + * FITNESS FOR ANY PARTICULAR PURPOSE. + * + * All of which is to say that you can do what you like with this + * source code provided you don't try to sell it as your own and you + * include an unaltered copy of this message (including the + * copyright). + * + * It is also implicitly understood that bug fixes and improvements + * should make their way back to the general Internet community so + * that everyone benefits. + * + * Changes: + * Trivial type modifications by the WebRTC authors. + */ + + +/* + * File: + * WebRtcIsac_Fftn.c + * + * Public: + * WebRtcIsac_Fftn / fftnf (); + * + * Private: + * WebRtcIsac_Fftradix / fftradixf (); + * + * Descript: + * multivariate complex Fourier transform, computed in place + * using mixed-radix Fast Fourier Transform algorithm. + * + * Fortran code by: + * RC Singleton, Stanford Research Institute, Sept. 1968 + * + * translated by f2c (version 19950721). + * + * int WebRtcIsac_Fftn (int ndim, const int dims[], REAL Re[], REAL Im[], + * int iSign, double scaling); + * + * NDIM = the total number dimensions + * DIMS = a vector of array sizes + * if NDIM is zero then DIMS must be zero-terminated + * + * RE and IM hold the real and imaginary components of the data, and return + * the resulting real and imaginary Fourier coefficients. Multidimensional + * data *must* be allocated contiguously. There is no limit on the number + * of dimensions. + * + * ISIGN = the sign of the complex exponential (ie, forward or inverse FFT) + * the magnitude of ISIGN (normally 1) is used to determine the + * correct indexing increment (see below). + * + * SCALING = normalizing constant by which the final result is *divided* + * if SCALING == -1, normalize by total dimension of the transform + * if SCALING < -1, normalize by the square-root of the total dimension + * + * example: + * tri-variate transform with Re[n1][n2][n3], Im[n1][n2][n3] + * + * int dims[3] = {n1,n2,n3} + * WebRtcIsac_Fftn (3, dims, Re, Im, 1, scaling); + * + *-----------------------------------------------------------------------* + * int WebRtcIsac_Fftradix (REAL Re[], REAL Im[], size_t nTotal, size_t nPass, + * size_t nSpan, int iSign, size_t max_factors, + * size_t max_perm); + * + * RE, IM - see above documentation + * + * Although there is no limit on the number of dimensions, WebRtcIsac_Fftradix() must + * be called once for each dimension, but the calls may be in any order. + * + * NTOTAL = the total number of complex data values + * NPASS = the dimension of the current variable + * NSPAN/NPASS = the spacing of consecutive data values while indexing the + * current variable + * ISIGN - see above documentation + * + * example: + * tri-variate transform with Re[n1][n2][n3], Im[n1][n2][n3] + * + * WebRtcIsac_Fftradix (Re, Im, n1*n2*n3, n1, n1, 1, maxf, maxp); + * WebRtcIsac_Fftradix (Re, Im, n1*n2*n3, n2, n1*n2, 1, maxf, maxp); + * WebRtcIsac_Fftradix (Re, Im, n1*n2*n3, n3, n1*n2*n3, 1, maxf, maxp); + * + * single-variate transform, + * NTOTAL = N = NSPAN = (number of complex data values), + * + * WebRtcIsac_Fftradix (Re, Im, n, n, n, 1, maxf, maxp); + * + * The data can also be stored in a single array with alternating real and + * imaginary parts, the magnitude of ISIGN is changed to 2 to give correct + * indexing increment, and data [0] and data [1] used to pass the initial + * addresses for the sequences of real and imaginary values, + * + * example: + * REAL data [2*NTOTAL]; + * WebRtcIsac_Fftradix ( &data[0], &data[1], NTOTAL, nPass, nSpan, 2, maxf, maxp); + * + * for temporary allocation: + * + * MAX_FACTORS >= the maximum prime factor of NPASS + * MAX_PERM >= the number of prime factors of NPASS. In addition, + * if the square-free portion K of NPASS has two or more prime + * factors, then MAX_PERM >= (K-1) + * + * storage in FACTOR for a maximum of 15 prime factors of NPASS. if NPASS + * has more than one square-free factor, the product of the square-free + * factors must be <= 210 array storage for maximum prime factor of 23 the + * following two constants should agree with the array dimensions. + * + *----------------------------------------------------------------------*/ +#include "fft.h" + +#include +#include + + + +/* double precision routine */ +static int +WebRtcIsac_Fftradix (double Re[], double Im[], + size_t nTotal, size_t nPass, size_t nSpan, int isign, + int max_factors, unsigned int max_perm, + FFTstr *fftstate); + + + +#ifndef M_PI +# define M_PI 3.14159265358979323846264338327950288 +#endif + +#ifndef SIN60 +# define SIN60 0.86602540378443865 /* sin(60 deg) */ +# define COS72 0.30901699437494742 /* cos(72 deg) */ +# define SIN72 0.95105651629515357 /* sin(72 deg) */ +#endif + +# define REAL double +# define FFTN WebRtcIsac_Fftn +# define FFTNS "fftn" +# define FFTRADIX WebRtcIsac_Fftradix +# define FFTRADIXS "fftradix" + + +int WebRtcIsac_Fftns(unsigned int ndim, const int dims[], + double Re[], + double Im[], + int iSign, + double scaling, + FFTstr *fftstate) +{ + + size_t nSpan, nPass, nTotal; + unsigned int i; + int ret, max_factors, max_perm; + + /* + * tally the number of elements in the data array + * and determine the number of dimensions + */ + nTotal = 1; + if (ndim && dims [0]) + { + for (i = 0; i < ndim; i++) + { + if (dims [i] <= 0) + { + return -1; + } + nTotal *= dims [i]; + } + } + else + { + ndim = 0; + for (i = 0; dims [i]; i++) + { + if (dims [i] <= 0) + { + return -1; + } + nTotal *= dims [i]; + ndim++; + } + } + + /* determine maximum number of factors and permuations */ +#if 1 + /* + * follow John Beale's example, just use the largest dimension and don't + * worry about excess allocation. May be someone else will do it? + */ + max_factors = max_perm = 1; + for (i = 0; i < ndim; i++) + { + nSpan = dims [i]; + if ((int)nSpan > max_factors) + { + max_factors = (int)nSpan; + } + if ((int)nSpan > max_perm) + { + max_perm = (int)nSpan; + } + } +#else + /* use the constants used in the original Fortran code */ + max_factors = 23; + max_perm = 209; +#endif + /* loop over the dimensions: */ + nPass = 1; + for (i = 0; i < ndim; i++) + { + nSpan = dims [i]; + nPass *= nSpan; + ret = FFTRADIX (Re, Im, nTotal, nSpan, nPass, iSign, + max_factors, max_perm, fftstate); + /* exit, clean-up already done */ + if (ret) + return ret; + } + + /* Divide through by the normalizing constant: */ + if (scaling && scaling != 1.0) + { + if (iSign < 0) iSign = -iSign; + if (scaling < 0.0) + { + scaling = (double)nTotal; + if (scaling < -1.0) + scaling = sqrt (scaling); + } + scaling = 1.0 / scaling; /* multiply is often faster */ + for (i = 0; i < nTotal; i += iSign) + { + Re [i] *= scaling; + Im [i] *= scaling; + } + } + return 0; +} + +/* + * singleton's mixed radix routine + * + * could move allocation out to WebRtcIsac_Fftn(), but leave it here so that it's + * possible to make this a standalone function + */ + +static int FFTRADIX (REAL Re[], + REAL Im[], + size_t nTotal, + size_t nPass, + size_t nSpan, + int iSign, + int max_factors, + unsigned int max_perm, + FFTstr *fftstate) +{ + int ii, mfactor, kspan, ispan, inc; + int j, jc, jf, jj, k, k1, k2, k3, k4, kk, kt, nn, ns, nt; + + + REAL radf; + REAL c1, c2, c3, cd, aa, aj, ak, ajm, ajp, akm, akp; + REAL s1, s2, s3, sd, bb, bj, bk, bjm, bjp, bkm, bkp; + + REAL *Rtmp = NULL; /* temp space for real part*/ + REAL *Itmp = NULL; /* temp space for imaginary part */ + REAL *Cos = NULL; /* Cosine values */ + REAL *Sin = NULL; /* Sine values */ + + REAL s60 = SIN60; /* sin(60 deg) */ + REAL c72 = COS72; /* cos(72 deg) */ + REAL s72 = SIN72; /* sin(72 deg) */ + REAL pi2 = M_PI; /* use PI first, 2 PI later */ + + + fftstate->SpaceAlloced = 0; + fftstate->MaxPermAlloced = 0; + + + // initialize to avoid warnings + k3 = c2 = c3 = s2 = s3 = 0.0; + + if (nPass < 2) + return 0; + + /* allocate storage */ + if (fftstate->SpaceAlloced < max_factors * sizeof (REAL)) + { +#ifdef SUN_BROKEN_REALLOC + if (!fftstate->SpaceAlloced) /* first time */ + { + fftstate->SpaceAlloced = max_factors * sizeof (REAL); + } + else + { +#endif + fftstate->SpaceAlloced = max_factors * sizeof (REAL); +#ifdef SUN_BROKEN_REALLOC + } +#endif + } + else + { + /* allow full use of alloc'd space */ + max_factors = fftstate->SpaceAlloced / sizeof (REAL); + } + if (fftstate->MaxPermAlloced < max_perm) + { +#ifdef SUN_BROKEN_REALLOC + if (!fftstate->MaxPermAlloced) /* first time */ + else +#endif + fftstate->MaxPermAlloced = max_perm; + } + else + { + /* allow full use of alloc'd space */ + max_perm = fftstate->MaxPermAlloced; + } + if (fftstate->Tmp0 == NULL || fftstate->Tmp1 == NULL || fftstate->Tmp2 == NULL || fftstate->Tmp3 == NULL + || fftstate->Perm == NULL) { + return -1; + } + + /* assign pointers */ + Rtmp = (REAL *) fftstate->Tmp0; + Itmp = (REAL *) fftstate->Tmp1; + Cos = (REAL *) fftstate->Tmp2; + Sin = (REAL *) fftstate->Tmp3; + + /* + * Function Body + */ + inc = iSign; + if (iSign < 0) { + s72 = -s72; + s60 = -s60; + pi2 = -pi2; + inc = -inc; /* absolute value */ + } + + /* adjust for strange increments */ + nt = inc * (int)nTotal; + ns = inc * (int)nSpan; + kspan = ns; + + nn = nt - inc; + jc = ns / (int)nPass; + radf = pi2 * (double) jc; + pi2 *= 2.0; /* use 2 PI from here on */ + + ii = 0; + jf = 0; + /* determine the factors of n */ + mfactor = 0; + k = (int)nPass; + while (k % 16 == 0) { + mfactor++; + fftstate->factor [mfactor - 1] = 4; + k /= 16; + } + j = 3; + jj = 9; + do { + while (k % jj == 0) { + mfactor++; + fftstate->factor [mfactor - 1] = j; + k /= jj; + } + j += 2; + jj = j * j; + } while (jj <= k); + if (k <= 4) { + kt = mfactor; + fftstate->factor [mfactor] = k; + if (k != 1) + mfactor++; + } else { + if (k - (k / 4 << 2) == 0) { + mfactor++; + fftstate->factor [mfactor - 1] = 2; + k /= 4; + } + kt = mfactor; + j = 2; + do { + if (k % j == 0) { + mfactor++; + fftstate->factor [mfactor - 1] = j; + k /= j; + } + j = ((j + 1) / 2 << 1) + 1; + } while (j <= k); + } + if (kt) { + j = kt; + do { + mfactor++; + fftstate->factor [mfactor - 1] = fftstate->factor [j - 1]; + j--; + } while (j); + } + + /* test that mfactors is in range */ + if (mfactor > NFACTOR) + { + return -1; + } + + /* compute fourier transform */ + for (;;) { + sd = radf / (double) kspan; + cd = sin(sd); + cd = 2.0 * cd * cd; + sd = sin(sd + sd); + kk = 0; + ii++; + + switch (fftstate->factor [ii - 1]) { + case 2: + /* transform for factor of 2 (including rotation factor) */ + kspan /= 2; + k1 = kspan + 2; + do { + do { + k2 = kk + kspan; + ak = Re [k2]; + bk = Im [k2]; + Re [k2] = Re [kk] - ak; + Im [k2] = Im [kk] - bk; + Re [kk] += ak; + Im [kk] += bk; + kk = k2 + kspan; + } while (kk < nn); + kk -= nn; + } while (kk < jc); + if (kk >= kspan) + goto Permute_Results_Label; /* exit infinite loop */ + do { + c1 = 1.0 - cd; + s1 = sd; + do { + do { + do { + k2 = kk + kspan; + ak = Re [kk] - Re [k2]; + bk = Im [kk] - Im [k2]; + Re [kk] += Re [k2]; + Im [kk] += Im [k2]; + Re [k2] = c1 * ak - s1 * bk; + Im [k2] = s1 * ak + c1 * bk; + kk = k2 + kspan; + } while (kk < (nt-1)); + k2 = kk - nt; + c1 = -c1; + kk = k1 - k2; + } while (kk > k2); + ak = c1 - (cd * c1 + sd * s1); + s1 = sd * c1 - cd * s1 + s1; + c1 = 2.0 - (ak * ak + s1 * s1); + s1 *= c1; + c1 *= ak; + kk += jc; + } while (kk < k2); + k1 += inc + inc; + kk = (k1 - kspan + 1) / 2 + jc - 1; + } while (kk < (jc + jc)); + break; + + case 4: /* transform for factor of 4 */ + ispan = kspan; + kspan /= 4; + + do { + c1 = 1.0; + s1 = 0.0; + do { + do { + k1 = kk + kspan; + k2 = k1 + kspan; + k3 = k2 + kspan; + akp = Re [kk] + Re [k2]; + akm = Re [kk] - Re [k2]; + ajp = Re [k1] + Re [k3]; + ajm = Re [k1] - Re [k3]; + bkp = Im [kk] + Im [k2]; + bkm = Im [kk] - Im [k2]; + bjp = Im [k1] + Im [k3]; + bjm = Im [k1] - Im [k3]; + Re [kk] = akp + ajp; + Im [kk] = bkp + bjp; + ajp = akp - ajp; + bjp = bkp - bjp; + if (iSign < 0) { + akp = akm + bjm; + bkp = bkm - ajm; + akm -= bjm; + bkm += ajm; + } else { + akp = akm - bjm; + bkp = bkm + ajm; + akm += bjm; + bkm -= ajm; + } + /* avoid useless multiplies */ + if (s1 == 0.0) { + Re [k1] = akp; + Re [k2] = ajp; + Re [k3] = akm; + Im [k1] = bkp; + Im [k2] = bjp; + Im [k3] = bkm; + } else { + Re [k1] = akp * c1 - bkp * s1; + Re [k2] = ajp * c2 - bjp * s2; + Re [k3] = akm * c3 - bkm * s3; + Im [k1] = akp * s1 + bkp * c1; + Im [k2] = ajp * s2 + bjp * c2; + Im [k3] = akm * s3 + bkm * c3; + } + kk = k3 + kspan; + } while (kk < nt); + + c2 = c1 - (cd * c1 + sd * s1); + s1 = sd * c1 - cd * s1 + s1; + c1 = 2.0 - (c2 * c2 + s1 * s1); + s1 *= c1; + c1 *= c2; + /* values of c2, c3, s2, s3 that will get used next time */ + c2 = c1 * c1 - s1 * s1; + s2 = 2.0 * c1 * s1; + c3 = c2 * c1 - s2 * s1; + s3 = c2 * s1 + s2 * c1; + kk = kk - nt + jc; + } while (kk < kspan); + kk = kk - kspan + inc; + } while (kk < jc); + if (kspan == jc) + goto Permute_Results_Label; /* exit infinite loop */ + break; + + default: + /* transform for odd factors */ +#ifdef FFT_RADIX4 + return -1; + break; +#else /* FFT_RADIX4 */ + k = fftstate->factor [ii - 1]; + ispan = kspan; + kspan /= k; + + switch (k) { + case 3: /* transform for factor of 3 (optional code) */ + do { + do { + k1 = kk + kspan; + k2 = k1 + kspan; + ak = Re [kk]; + bk = Im [kk]; + aj = Re [k1] + Re [k2]; + bj = Im [k1] + Im [k2]; + Re [kk] = ak + aj; + Im [kk] = bk + bj; + ak -= 0.5 * aj; + bk -= 0.5 * bj; + aj = (Re [k1] - Re [k2]) * s60; + bj = (Im [k1] - Im [k2]) * s60; + Re [k1] = ak - bj; + Re [k2] = ak + bj; + Im [k1] = bk + aj; + Im [k2] = bk - aj; + kk = k2 + kspan; + } while (kk < (nn - 1)); + kk -= nn; + } while (kk < kspan); + break; + + case 5: /* transform for factor of 5 (optional code) */ + c2 = c72 * c72 - s72 * s72; + s2 = 2.0 * c72 * s72; + do { + do { + k1 = kk + kspan; + k2 = k1 + kspan; + k3 = k2 + kspan; + k4 = k3 + kspan; + akp = Re [k1] + Re [k4]; + akm = Re [k1] - Re [k4]; + bkp = Im [k1] + Im [k4]; + bkm = Im [k1] - Im [k4]; + ajp = Re [k2] + Re [k3]; + ajm = Re [k2] - Re [k3]; + bjp = Im [k2] + Im [k3]; + bjm = Im [k2] - Im [k3]; + aa = Re [kk]; + bb = Im [kk]; + Re [kk] = aa + akp + ajp; + Im [kk] = bb + bkp + bjp; + ak = akp * c72 + ajp * c2 + aa; + bk = bkp * c72 + bjp * c2 + bb; + aj = akm * s72 + ajm * s2; + bj = bkm * s72 + bjm * s2; + Re [k1] = ak - bj; + Re [k4] = ak + bj; + Im [k1] = bk + aj; + Im [k4] = bk - aj; + ak = akp * c2 + ajp * c72 + aa; + bk = bkp * c2 + bjp * c72 + bb; + aj = akm * s2 - ajm * s72; + bj = bkm * s2 - bjm * s72; + Re [k2] = ak - bj; + Re [k3] = ak + bj; + Im [k2] = bk + aj; + Im [k3] = bk - aj; + kk = k4 + kspan; + } while (kk < (nn-1)); + kk -= nn; + } while (kk < kspan); + break; + + default: + if (k != jf) { + jf = k; + s1 = pi2 / (double) k; + c1 = cos(s1); + s1 = sin(s1); + if (jf > max_factors){ + return -1; + } + Cos [jf - 1] = 1.0; + Sin [jf - 1] = 0.0; + j = 1; + do { + Cos [j - 1] = Cos [k - 1] * c1 + Sin [k - 1] * s1; + Sin [j - 1] = Cos [k - 1] * s1 - Sin [k - 1] * c1; + k--; + Cos [k - 1] = Cos [j - 1]; + Sin [k - 1] = -Sin [j - 1]; + j++; + } while (j < k); + } + do { + do { + k1 = kk; + k2 = kk + ispan; + ak = aa = Re [kk]; + bk = bb = Im [kk]; + j = 1; + k1 += kspan; + do { + k2 -= kspan; + j++; + Rtmp [j - 1] = Re [k1] + Re [k2]; + ak += Rtmp [j - 1]; + Itmp [j - 1] = Im [k1] + Im [k2]; + bk += Itmp [j - 1]; + j++; + Rtmp [j - 1] = Re [k1] - Re [k2]; + Itmp [j - 1] = Im [k1] - Im [k2]; + k1 += kspan; + } while (k1 < k2); + Re [kk] = ak; + Im [kk] = bk; + k1 = kk; + k2 = kk + ispan; + j = 1; + do { + k1 += kspan; + k2 -= kspan; + jj = j; + ak = aa; + bk = bb; + aj = 0.0; + bj = 0.0; + k = 1; + do { + k++; + ak += Rtmp [k - 1] * Cos [jj - 1]; + bk += Itmp [k - 1] * Cos [jj - 1]; + k++; + aj += Rtmp [k - 1] * Sin [jj - 1]; + bj += Itmp [k - 1] * Sin [jj - 1]; + jj += j; + if (jj > jf) { + jj -= jf; + } + } while (k < jf); + k = jf - j; + Re [k1] = ak - bj; + Im [k1] = bk + aj; + Re [k2] = ak + bj; + Im [k2] = bk - aj; + j++; + } while (j < k); + kk += ispan; + } while (kk < nn); + kk -= nn; + } while (kk < kspan); + break; + } + + /* multiply by rotation factor (except for factors of 2 and 4) */ + if (ii == mfactor) + goto Permute_Results_Label; /* exit infinite loop */ + kk = jc; + do { + c2 = 1.0 - cd; + s1 = sd; + do { + c1 = c2; + s2 = s1; + kk += kspan; + do { + do { + ak = Re [kk]; + Re [kk] = c2 * ak - s2 * Im [kk]; + Im [kk] = s2 * ak + c2 * Im [kk]; + kk += ispan; + } while (kk < nt); + ak = s1 * s2; + s2 = s1 * c2 + c1 * s2; + c2 = c1 * c2 - ak; + kk = kk - nt + kspan; + } while (kk < ispan); + c2 = c1 - (cd * c1 + sd * s1); + s1 += sd * c1 - cd * s1; + c1 = 2.0 - (c2 * c2 + s1 * s1); + s1 *= c1; + c2 *= c1; + kk = kk - ispan + jc; + } while (kk < kspan); + kk = kk - kspan + jc + inc; + } while (kk < (jc + jc)); + break; +#endif /* FFT_RADIX4 */ + } + } + + /* permute the results to normal order---done in two stages */ + /* permutation for square factors of n */ +Permute_Results_Label: + fftstate->Perm [0] = ns; + if (kt) { + k = kt + kt + 1; + if (mfactor < k) + k--; + j = 1; + fftstate->Perm [k] = jc; + do { + fftstate->Perm [j] = fftstate->Perm [j - 1] / fftstate->factor [j - 1]; + fftstate->Perm [k - 1] = fftstate->Perm [k] * fftstate->factor [j - 1]; + j++; + k--; + } while (j < k); + k3 = fftstate->Perm [k]; + kspan = fftstate->Perm [1]; + kk = jc; + k2 = kspan; + j = 1; + if (nPass != nTotal) { + /* permutation for multivariate transform */ + Permute_Multi_Label: + do { + do { + k = kk + jc; + do { + /* swap Re [kk] <> Re [k2], Im [kk] <> Im [k2] */ + ak = Re [kk]; Re [kk] = Re [k2]; Re [k2] = ak; + bk = Im [kk]; Im [kk] = Im [k2]; Im [k2] = bk; + kk += inc; + k2 += inc; + } while (kk < (k-1)); + kk += ns - jc; + k2 += ns - jc; + } while (kk < (nt-1)); + k2 = k2 - nt + kspan; + kk = kk - nt + jc; + } while (k2 < (ns-1)); + do { + do { + k2 -= fftstate->Perm [j - 1]; + j++; + k2 = fftstate->Perm [j] + k2; + } while (k2 > fftstate->Perm [j - 1]); + j = 1; + do { + if (kk < (k2-1)) + goto Permute_Multi_Label; + kk += jc; + k2 += kspan; + } while (k2 < (ns-1)); + } while (kk < (ns-1)); + } else { + /* permutation for single-variate transform (optional code) */ + Permute_Single_Label: + do { + /* swap Re [kk] <> Re [k2], Im [kk] <> Im [k2] */ + ak = Re [kk]; Re [kk] = Re [k2]; Re [k2] = ak; + bk = Im [kk]; Im [kk] = Im [k2]; Im [k2] = bk; + kk += inc; + k2 += kspan; + } while (k2 < (ns-1)); + do { + do { + k2 -= fftstate->Perm [j - 1]; + j++; + k2 = fftstate->Perm [j] + k2; + } while (k2 >= fftstate->Perm [j - 1]); + j = 1; + do { + if (kk < k2) + goto Permute_Single_Label; + kk += inc; + k2 += kspan; + } while (k2 < (ns-1)); + } while (kk < (ns-1)); + } + jc = k3; + } + + if ((kt << 1) + 1 >= mfactor) + return 0; + ispan = fftstate->Perm [kt]; + /* permutation for square-free factors of n */ + j = mfactor - kt; + fftstate->factor [j] = 1; + do { + fftstate->factor [j - 1] *= fftstate->factor [j]; + j--; + } while (j != kt); + kt++; + nn = fftstate->factor [kt - 1] - 1; + if (nn > (int) max_perm) { + return -1; + } + j = jj = 0; + for (;;) { + k = kt + 1; + k2 = fftstate->factor [kt - 1]; + kk = fftstate->factor [k - 1]; + j++; + if (j > nn) + break; /* exit infinite loop */ + jj += kk; + while (jj >= k2) { + jj -= k2; + k2 = kk; + k++; + kk = fftstate->factor [k - 1]; + jj += kk; + } + fftstate->Perm [j - 1] = jj; + } + /* determine the permutation cycles of length greater than 1 */ + j = 0; + for (;;) { + do { + j++; + kk = fftstate->Perm [j - 1]; + } while (kk < 0); + if (kk != j) { + do { + k = kk; + kk = fftstate->Perm [k - 1]; + fftstate->Perm [k - 1] = -kk; + } while (kk != j); + k3 = kk; + } else { + fftstate->Perm [j - 1] = -j; + if (j == nn) + break; /* exit infinite loop */ + } + } + max_factors *= inc; + /* reorder a and b, following the permutation cycles */ + for (;;) { + j = k3 + 1; + nt -= ispan; + ii = nt - inc + 1; + if (nt < 0) + break; /* exit infinite loop */ + do { + do { + j--; + } while (fftstate->Perm [j - 1] < 0); + jj = jc; + do { + kspan = jj; + if (jj > max_factors) { + kspan = max_factors; + } + jj -= kspan; + k = fftstate->Perm [j - 1]; + kk = jc * k + ii + jj; + k1 = kk + kspan - 1; + k2 = 0; + do { + k2++; + Rtmp [k2 - 1] = Re [k1]; + Itmp [k2 - 1] = Im [k1]; + k1 -= inc; + } while (k1 != (kk-1)); + do { + k1 = kk + kspan - 1; + k2 = k1 - jc * (k + fftstate->Perm [k - 1]); + k = -fftstate->Perm [k - 1]; + do { + Re [k1] = Re [k2]; + Im [k1] = Im [k2]; + k1 -= inc; + k2 -= inc; + } while (k1 != (kk-1)); + kk = k2 + 1; + } while (k != j); + k1 = kk + kspan - 1; + k2 = 0; + do { + k2++; + Re [k1] = Rtmp [k2 - 1]; + Im [k1] = Itmp [k2 - 1]; + k1 -= inc; + } while (k1 != (kk-1)); + } while (jj); + } while (j != 1); + } + return 0; /* exit point here */ +} +/* ---------------------- end-of-file (c source) ---------------------- */ + diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/fft.h.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/fft.h.svn-base new file mode 100644 index 0000000000..a42f57bcb5 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/fft.h.svn-base @@ -0,0 +1,45 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/*--------------------------------*-C-*---------------------------------* + * File: + * fftn.h + * ---------------------------------------------------------------------* + * Re[]: real value array + * Im[]: imaginary value array + * nTotal: total number of complex values + * nPass: number of elements involved in this pass of transform + * nSpan: nspan/nPass = number of bytes to increment pointer + * in Re[] and Im[] + * isign: exponent: +1 = forward -1 = reverse + * scaling: normalizing constant by which the final result is *divided* + * scaling == -1, normalize by total dimension of the transform + * scaling < -1, normalize by the square-root of the total dimension + * + * ---------------------------------------------------------------------- + * See the comments in the code for correct usage! + */ + +#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_FFT_H_ +#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_FFT_H_ + + +#include "structs.h" + + +/* double precision routine */ + + +int WebRtcIsac_Fftns (unsigned int ndim, const int dims[], double Re[], double Im[], + int isign, double scaling, FFTstr *fftstate); + + + +#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_FFT_H_ */ diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/filter_functions.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/filter_functions.c.svn-base new file mode 100644 index 0000000000..33024a3dee --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/filter_functions.c.svn-base @@ -0,0 +1,271 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#include +#ifdef WEBRTC_ANDROID +#include +#endif +#include "pitch_estimator.h" +#include "lpc_analysis.h" +#include "codec.h" + + + +void WebRtcIsac_AllPoleFilter(double *InOut, double *Coef, int lengthInOut, int orderCoef){ + + /* the state of filter is assumed to be in InOut[-1] to InOut[-orderCoef] */ + double scal; + double sum; + int n,k; + + //if (fabs(Coef[0]-1.0)<0.001) { + if ( (Coef[0] > 0.9999) && (Coef[0] < 1.0001) ) + { + for(n = 0; n < lengthInOut; n++) + { + sum = Coef[1] * InOut[-1]; + for(k = 2; k <= orderCoef; k++){ + sum += Coef[k] * InOut[-k]; + } + *InOut++ -= sum; + } + } + else + { + scal = 1.0 / Coef[0]; + for(n=0;nbuffer, sizeof(double) * PITCH_WLPCBUFLEN); + memcpy(tmpbuffer+PITCH_WLPCBUFLEN, in, sizeof(double) * PITCH_FRAME_LEN); + memcpy(wfdata->buffer, tmpbuffer+PITCH_FRAME_LEN, sizeof(double) * PITCH_WLPCBUFLEN); + + dp=weoutbuf; + dp2=whoutbuf; + for (k=0;kweostate[k]; + *dp2++ = wfdata->whostate[k]; + opol[k]=0.0; + } + opol[0]=1.0; + opol[PITCH_WLPCORDER]=0.0; + weo=dp; + who=dp2; + + endpos=PITCH_WLPCBUFLEN + PITCH_SUBFRAME_LEN; + inp=tmpbuffer + PITCH_WLPCBUFLEN; + + for (n=0; nwindow[k]*tmpbuffer[start+k]; + } + + /* Get LPC polynomial */ + WebRtcIsac_AutoCorr(corr, ext, PITCH_WLPCWINLEN, PITCH_WLPCORDER); + corr[0]=1.01*corr[0]+1.0; /* White noise correction */ + WebRtcIsac_LevDurb(apol, rc, corr, PITCH_WLPCORDER); + WebRtcIsac_BwExpand(apolr, apol, rho, PITCH_WLPCORDER+1); + + /* Filtering */ + WebRtcIsac_ZeroPoleFilter(inp, apol, apolr, PITCH_SUBFRAME_LEN, PITCH_WLPCORDER, weo); + WebRtcIsac_ZeroPoleFilter(inp, apolr, opol, PITCH_SUBFRAME_LEN, PITCH_WLPCORDER, who); + + inp+=PITCH_SUBFRAME_LEN; + endpos+=PITCH_SUBFRAME_LEN; + weo+=PITCH_SUBFRAME_LEN; + who+=PITCH_SUBFRAME_LEN; + } + + /* Export filter states */ + for (k=0;kweostate[k]=weoutbuf[PITCH_FRAME_LEN+k]; + wfdata->whostate[k]=whoutbuf[PITCH_FRAME_LEN+k]; + } + + /* Export output data */ + memcpy(weiout, weoutbuf+PITCH_WLPCORDER, sizeof(double) * PITCH_FRAME_LEN); + memcpy(whiout, whoutbuf+PITCH_WLPCORDER, sizeof(double) * PITCH_FRAME_LEN); +} + + +static const double APupper[ALLPASSSECTIONS] = {0.0347, 0.3826}; +static const double APlower[ALLPASSSECTIONS] = {0.1544, 0.744}; + + + +void WebRtcIsac_AllpassFilterForDec(double *InOut, + const double *APSectionFactors, + int lengthInOut, + double *FilterState) +{ + //This performs all-pass filtering--a series of first order all-pass sections are used + //to filter the input in a cascade manner. + int n,j; + double temp; + for (j=0; jINLABUFx arrays + each of length QLOOKAHEAD. + The remaining FRAMESAMPLES_HALF-QLOOKAHEAD samples are based + on the first FRAMESAMPLES_HALF-QLOOKAHEAD samples of the input + array in[]. + HP: a FRAMESAMPLES_HALF array of high-pass filtered samples that + have been phase equalized. The first QLOOKAHEAD samples are + based on the samples in the two prefiltdata->INLABUFx arrays + each of length QLOOKAHEAD. + The remaining FRAMESAMPLES_HALF-QLOOKAHEAD samples are based + on the first FRAMESAMPLES_HALF-QLOOKAHEAD samples of the input + array in[]. + + LP_la: a FRAMESAMPLES_HALF array of low-pass filtered samples. + These samples are not phase equalized. They are computed + from the samples in the in[] array. + HP_la: a FRAMESAMPLES_HALF array of high-pass filtered samples + that are not phase equalized. They are computed from + the in[] vector. + prefiltdata: this input data structure's filterbank state and + lookahead sample buffers are updated for the next + encoding iteration. +*/ +void WebRtcIsac_SplitAndFilterFloat(float *pin, float *LP, float *HP, + double *LP_la, double *HP_la, + PreFiltBankstr *prefiltdata) +{ + int k,n; + float CompositeAPFilterState[NUMBEROFCOMPOSITEAPSECTIONS]; + float ForTransform_CompositeAPFilterState[NUMBEROFCOMPOSITEAPSECTIONS]; + float ForTransform_CompositeAPFilterState2[NUMBEROFCOMPOSITEAPSECTIONS]; + float tempinoutvec[FRAMESAMPLES+MAX_AR_MODEL_ORDER]; + float tempin_ch1[FRAMESAMPLES+MAX_AR_MODEL_ORDER]; + float tempin_ch2[FRAMESAMPLES+MAX_AR_MODEL_ORDER]; + float in[FRAMESAMPLES]; + float ftmp; + + + /* High pass filter */ + + for (k=0;kHPstates_float[0] + + kHpStCoefInFloat[3] * prefiltdata->HPstates_float[1]; + ftmp = pin[k] - kHpStCoefInFloat[0] * prefiltdata->HPstates_float[0] - + kHpStCoefInFloat[1] * prefiltdata->HPstates_float[1]; + prefiltdata->HPstates_float[1] = prefiltdata->HPstates_float[0]; + prefiltdata->HPstates_float[0] = ftmp; + } + + /* + % backwards all-pass filtering to obtain zero-phase + [tmp1(N2+LA:-1:LA+1, 1), state1] = filter(Q.coef, Q.coef(end:-1:1), in(N:-2:2)); + tmp1(LA:-1:1) = filter(Q.coef, Q.coef(end:-1:1), Q.LookAheadBuf1, state1); + Q.LookAheadBuf1 = in(N:-2:N-2*LA+2); + */ + /*Backwards all-pass filter the odd samples of the input (upper channel) + to eventually obtain zero phase. The composite all-pass filter (comprised of both + the upper and lower channel all-pass filsters in series) is used for the + filtering. */ + + /* First Channel */ + + /*initial state of composite filter is zero */ + for (k=0;kINLABUF1_float, + WebRtcIsac_kCompositeApFactorsFloat, QLOOKAHEAD, + NUMBEROFCOMPOSITEAPSECTIONS, CompositeAPFilterState); + + /* save the output, but write it in forward order */ + /* write the lookahead samples for the next encoding iteration. Every other + sample at the end of the input frame is written in reverse order for the + lookahead length. Exported in the prefiltdata structure. */ + for (k=0;kINLABUF1_float[k]; + prefiltdata->INLABUF1_float[k]=in[FRAMESAMPLES-1-2*k]; + } + + /* Second Channel. This is exactly like the first channel, except that the + even samples are now filtered instead (lower channel). */ + for (k=0;kINLABUF2_float, + WebRtcIsac_kCompositeApFactorsFloat, QLOOKAHEAD,NUMBEROFCOMPOSITEAPSECTIONS, + CompositeAPFilterState); + + for (k=0;kINLABUF2_float[k]; + prefiltdata->INLABUF2_float[k]=in[FRAMESAMPLES-2-2*k]; + } + + /* Transform filter states from backward to forward */ + /*At this point, each of the states of the backwards composite filters for the + two channels are transformed into forward filtering states for the corresponding + forward channel filters. Each channel's forward filtering state from the previous + encoding iteration is added to the transformed state to get a proper forward state */ + + /* So the existing NUMBEROFCOMPOSITEAPSECTIONS x 1 (4x1) state vector is multiplied by a + NUMBEROFCHANNELAPSECTIONSxNUMBEROFCOMPOSITEAPSECTIONS (2x4) transform matrix to get the + new state that is added to the previous 2x1 input state */ + + for (k=0;kINSTAT1_float[k] += ForTransform_CompositeAPFilterState[n]* + WebRtcIsac_kTransform1Float[k*NUMBEROFCHANNELAPSECTIONS+n]; + prefiltdata->INSTAT2_float[k] += ForTransform_CompositeAPFilterState2[n]* + WebRtcIsac_kTransform2Float[k*NUMBEROFCHANNELAPSECTIONS+n]; + } + } + + /*obtain polyphase components by forward all-pass filtering through each channel */ + /* the backward filtered samples are now forward filtered with the corresponding channel filters */ + /* The all pass filtering automatically updates the filter states which are exported in the + prefiltdata structure */ + WebRtcIsac_AllPassFilter2Float(tempin_ch1,WebRtcIsac_kUpperApFactorsFloat, + FRAMESAMPLES_HALF, NUMBEROFCHANNELAPSECTIONS, prefiltdata->INSTAT1_float); + WebRtcIsac_AllPassFilter2Float(tempin_ch2,WebRtcIsac_kLowerApFactorsFloat, + FRAMESAMPLES_HALF, NUMBEROFCHANNELAPSECTIONS, prefiltdata->INSTAT2_float); + + /* Now Construct low-pass and high-pass signals as combinations of polyphase components */ + for (k=0; kINSTATLA1_float); + WebRtcIsac_AllPassFilter2Float(tempin_ch2,WebRtcIsac_kLowerApFactorsFloat, + FRAMESAMPLES_HALF, NUMBEROFCHANNELAPSECTIONS, prefiltdata->INSTATLA2_float); + + for (k=0; kSTATE_0_UPPER_float); + + /* Now, all-pass filter the new lower channel signal. But since all-pass filter factors + at the decoder are swapped from the ones at the encoder, the 'upper' channel + all-pass filter factors (WebRtcIsac_kUpperApFactorsFloat) are used to filter this new + lower channel signal */ + WebRtcIsac_AllPassFilter2Float(tempin_ch2, WebRtcIsac_kUpperApFactorsFloat, + FRAMESAMPLES_HALF, NUMBEROFCHANNELAPSECTIONS,postfiltdata->STATE_0_LOWER_float); + + + /* Merge outputs to form the full length output signal.*/ + for (k=0;kHPstates1_float[0] + + kHpStCoefOut1Float[3] * postfiltdata->HPstates1_float[1]; + ftmp = Out[k] - kHpStCoefOut1Float[0] * postfiltdata->HPstates1_float[0] - + kHpStCoefOut1Float[1] * postfiltdata->HPstates1_float[1]; + postfiltdata->HPstates1_float[1] = postfiltdata->HPstates1_float[0]; + postfiltdata->HPstates1_float[0] = ftmp; + Out[k] = ftmp2; + } + + for (k=0;kHPstates2_float[0] + + kHpStCoefOut2Float[3] * postfiltdata->HPstates2_float[1]; + ftmp = Out[k] - kHpStCoefOut2Float[0] * postfiltdata->HPstates2_float[0] - + kHpStCoefOut2Float[1] * postfiltdata->HPstates2_float[1]; + postfiltdata->HPstates2_float[1] = postfiltdata->HPstates2_float[0]; + postfiltdata->HPstates2_float[0] = ftmp; + Out[k] = ftmp2; + } +} diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/intialize.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/intialize.c.svn-base new file mode 100644 index 0000000000..6df034d1c7 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/intialize.c.svn-base @@ -0,0 +1,175 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* encode.c - Encoding function for the iSAC coder */ + +#include "structs.h" +#include "codec.h" +#include "pitch_estimator.h" + +#include + +void WebRtcIsac_InitMasking(MaskFiltstr *maskdata) { + + int k; + + for (k = 0; k < WINLEN; k++) { + maskdata->DataBufferLo[k] = 0.0; + maskdata->DataBufferHi[k] = 0.0; + } + for (k = 0; k < ORDERLO+1; k++) { + maskdata->CorrBufLo[k] = 0.0; + maskdata->PreStateLoF[k] = 0.0; + maskdata->PreStateLoG[k] = 0.0; + maskdata->PostStateLoF[k] = 0.0; + maskdata->PostStateLoG[k] = 0.0; + } + for (k = 0; k < ORDERHI+1; k++) { + maskdata->CorrBufHi[k] = 0.0; + maskdata->PreStateHiF[k] = 0.0; + maskdata->PreStateHiG[k] = 0.0; + maskdata->PostStateHiF[k] = 0.0; + maskdata->PostStateHiG[k] = 0.0; + } + + maskdata->OldEnergy = 10.0; + + /* fill tables for transforms */ + WebRtcIsac_InitTransform(); + + return; +} + +void WebRtcIsac_InitPreFilterbank(PreFiltBankstr *prefiltdata) +{ + int k; + + for (k = 0; k < QLOOKAHEAD; k++) { + prefiltdata->INLABUF1[k] = 0; + prefiltdata->INLABUF2[k] = 0; + + prefiltdata->INLABUF1_float[k] = 0; + prefiltdata->INLABUF2_float[k] = 0; + } + for (k = 0; k < 2*(QORDER-1); k++) { + prefiltdata->INSTAT1[k] = 0; + prefiltdata->INSTAT2[k] = 0; + prefiltdata->INSTATLA1[k] = 0; + prefiltdata->INSTATLA2[k] = 0; + + prefiltdata->INSTAT1_float[k] = 0; + prefiltdata->INSTAT2_float[k] = 0; + prefiltdata->INSTATLA1_float[k] = 0; + prefiltdata->INSTATLA2_float[k] = 0; + } + + /* High pass filter states */ + prefiltdata->HPstates[0] = 0.0; + prefiltdata->HPstates[1] = 0.0; + + prefiltdata->HPstates_float[0] = 0.0f; + prefiltdata->HPstates_float[1] = 0.0f; + + return; +} + +void WebRtcIsac_InitPostFilterbank(PostFiltBankstr *postfiltdata) +{ + int k; + + for (k = 0; k < 2*POSTQORDER; k++) { + postfiltdata->STATE_0_LOWER[k] = 0; + postfiltdata->STATE_0_UPPER[k] = 0; + + postfiltdata->STATE_0_LOWER_float[k] = 0; + postfiltdata->STATE_0_UPPER_float[k] = 0; + } + + /* High pass filter states */ + postfiltdata->HPstates1[0] = 0.0; + postfiltdata->HPstates1[1] = 0.0; + + postfiltdata->HPstates2[0] = 0.0; + postfiltdata->HPstates2[1] = 0.0; + + postfiltdata->HPstates1_float[0] = 0.0f; + postfiltdata->HPstates1_float[1] = 0.0f; + + postfiltdata->HPstates2_float[0] = 0.0f; + postfiltdata->HPstates2_float[1] = 0.0f; + + return; +} + + +void WebRtcIsac_InitPitchFilter(PitchFiltstr *pitchfiltdata) +{ + int k; + + for (k = 0; k < PITCH_BUFFSIZE; k++) { + pitchfiltdata->ubuf[k] = 0.0; + } + pitchfiltdata->ystate[0] = 0.0; + for (k = 1; k < (PITCH_DAMPORDER); k++) { + pitchfiltdata->ystate[k] = 0.0; + } + pitchfiltdata->oldlagp[0] = 50.0; + pitchfiltdata->oldgainp[0] = 0.0; +} + +void WebRtcIsac_InitWeightingFilter(WeightFiltstr *wfdata) +{ + int k; + double t, dtmp, dtmp2, denum, denum2; + + for (k=0;kbuffer[k]=0.0; + + for (k=0;kistate[k]=0.0; + wfdata->weostate[k]=0.0; + wfdata->whostate[k]=0.0; + } + + /* next part should be in Matlab, writing to a global table */ + t = 0.5; + denum = 1.0 / ((double) PITCH_WLPCWINLEN); + denum2 = denum * denum; + for (k=0;kwindow[k] = dtmp2 * dtmp2; + t++; + } +} + +/* clear all buffers */ +void WebRtcIsac_InitPitchAnalysis(PitchAnalysisStruct *State) +{ + int k; + + for (k = 0; k < PITCH_CORR_LEN2+PITCH_CORR_STEP2+PITCH_MAX_LAG/2-PITCH_FRAME_LEN/2+2; k++) + State->dec_buffer[k] = 0.0; + for (k = 0; k < 2*ALLPASSSECTIONS+1; k++) + State->decimator_state[k] = 0.0; + for (k = 0; k < 2; k++) + State->hp_state[k] = 0.0; + for (k = 0; k < QLOOKAHEAD; k++) + State->whitened_buf[k] = 0.0; + for (k = 0; k < QLOOKAHEAD; k++) + State->inbuf[k] = 0.0; + + WebRtcIsac_InitPitchFilter(&(State->PFstr_wght)); + + WebRtcIsac_InitPitchFilter(&(State->PFstr)); + + WebRtcIsac_InitWeightingFilter(&(State->Wghtstr)); +} diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/isac.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/isac.c.svn-base new file mode 100644 index 0000000000..2199d571f9 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/isac.c.svn-base @@ -0,0 +1,2797 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * isac.c + * + * This C file contains the functions for the ISAC API + * + */ + +#include "isac.h" +#include "bandwidth_estimator.h" +#include "crc.h" +#include "entropy_coding.h" +#include "codec.h" +#include "structs.h" +#include "signal_processing_library.h" +#include "lpc_shape_swb16_tables.h" +#include "os_specific_inline.h" + +#include +#include +#include +#include + +#define BIT_MASK_DEC_INIT 0x0001 +#define BIT_MASK_ENC_INIT 0x0002 + +#define LEN_CHECK_SUM_WORD8 4 +#define MAX_NUM_LAYERS 10 + + +/**************************************************************************** + * UpdatePayloadSizeLimit() + * + * Call this function to update the limit on the payload size. The limit on + * payload size might change i) if a user ''directly changes the limit by + * calling xxx_setMaxPayloadSize() or xxx_setMaxRate(), or ii) indirectly + * when bandwidth is changing. The latter might be the result of bandwidth + * adaptation, or direct change of the bottleneck in instantaneous mode. + * + * This function takes the current overall limit on payload, and translate it + * to the limits on lower and upper-band. If the codec is in wideband mode + * then the overall limit and the limit on the lower-band is the same. + * Otherwise, a fraction of the limit should be allocated to lower-band + * leaving some room for the upper-band bit-stream. That is why an update + * of limit is required every time that the bandwidth is changing. + * + */ +static void UpdatePayloadSizeLimit( + ISACMainStruct *instISAC) +{ + WebRtc_Word16 lim30MsPayloadBytes; + WebRtc_Word16 lim60MsPayloadBytes; + + lim30MsPayloadBytes = WEBRTC_SPL_MIN( + (instISAC->maxPayloadSizeBytes), + (instISAC->maxRateBytesPer30Ms)); + + lim60MsPayloadBytes = WEBRTC_SPL_MIN( + (instISAC->maxPayloadSizeBytes), + (instISAC->maxRateBytesPer30Ms << 1)); + + // The only time that iSAC will have 60 ms + // frame-size is when operating in wideband so + // there is no upper-band bit-stream + + if(instISAC->bandwidthKHz == isac8kHz) + { + // at 8 kHz there is no upper-band bit-stream + // therefore the lower-band limit is as the overall + // limit. + instISAC->instLB.ISACencLB_obj.payloadLimitBytes60 = + lim60MsPayloadBytes; + instISAC->instLB.ISACencLB_obj.payloadLimitBytes30 = + lim30MsPayloadBytes; + } + else + { + // when in super-wideband, we only have 30 ms frames + // Do a rate allocation for the given limit. + if(lim30MsPayloadBytes > 250) + { + // 4/5 to lower-band the rest for upper-band + instISAC->instLB.ISACencLB_obj.payloadLimitBytes30 = + (lim30MsPayloadBytes << 2) / 5; + } + else if(lim30MsPayloadBytes > 200) + { + // for the interval of 200 to 250 the share of + // upper-band linearly grows from 20 to 50; + instISAC->instLB.ISACencLB_obj.payloadLimitBytes30 = + (lim30MsPayloadBytes << 1) / 5 + 100; + } + else + { + // allocate only 20 for upper-band + instISAC->instLB.ISACencLB_obj.payloadLimitBytes30 = + lim30MsPayloadBytes - 20; + } + instISAC->instUB.ISACencUB_obj.maxPayloadSizeBytes = + lim30MsPayloadBytes; + } +} + + +/**************************************************************************** + * UpdateBottleneck() + * + * This function updates the bottleneck only if the codec is operating in + * channel-adaptive mode. Furthermore, as the update of bottleneck might + * result in an update of bandwidth, therefore, the bottlenech should be + * updated just right before the first 10ms of a frame is pushed into encoder. + * + */ +static void UpdateBottleneck( + ISACMainStruct *instISAC) +{ + // read the bottleneck from bandwidth estimator for the + // first 10 ms audio. This way, if there is a change + // in bandwidth upper and lower-band will be in sync. + if((instISAC->codingMode == 0) && + (instISAC->instLB.ISACencLB_obj.buffer_index == 0) && + (instISAC->instLB.ISACencLB_obj.frame_nb == 0)) + { + WebRtc_Word32 bottleneck; + WebRtcIsac_GetUplinkBandwidth(&(instISAC->bwestimator_obj), + &bottleneck); + + // Adding hysteresis when increasing signal bandwidth + if((instISAC->bandwidthKHz == isac8kHz) + && (bottleneck > 37000) + && (bottleneck < 41000)) + { + bottleneck = 37000; + } + + // switching from 12 kHz to 16 kHz is not allowed at this revision + // If we let this happen, we have to take care of buffer_index and + // the last LPC vector. + if((instISAC->bandwidthKHz != isac16kHz) && + (bottleneck > 46000)) + { + bottleneck = 46000; + } + + // we might need a rate allocation. + if(instISAC->encoderSamplingRateKHz == kIsacWideband) + { + // wideband is the only choise we have here. + instISAC->instLB.ISACencLB_obj.bottleneck = + (bottleneck > 32000)? 32000:bottleneck; + instISAC->bandwidthKHz = isac8kHz; + } + else + { + // do the rate-allosation and get the new bandwidth. + enum ISACBandwidth bandwidth; + WebRtcIsac_RateAllocation(bottleneck, + &(instISAC->instLB.ISACencLB_obj.bottleneck), + &(instISAC->instUB.ISACencUB_obj.bottleneck), + &bandwidth); + if(bandwidth != isac8kHz) + { + instISAC->instLB.ISACencLB_obj.new_framelength = 480; + } + if(bandwidth != instISAC->bandwidthKHz) + { + // bandwidth is changing. + instISAC->bandwidthKHz = bandwidth; + UpdatePayloadSizeLimit(instISAC); + if(bandwidth == isac12kHz) + { + instISAC->instLB.ISACencLB_obj.buffer_index = 0; + } + // currently we don't let the bandwidth to switch to 16 kHz + // if in adaptive mode. If we let this happen, we have to take + // car of buffer_index and the last LPC vector. + } + } + } +} + + +/**************************************************************************** + * GetSendBandwidthInfo() + * + * This is called to get the bandwidth info. This info is the bandwidth and + * and the jitter of 'there-to-here' channel, estimated 'here.' These info + * is signaled in an in-band fashion to the otherside. + * + * The call to the bandwidth estimator trigers a recursive averaging which + * has to be synchronized between encoder & decoder, therefore. The call to + * BWE should be once per packet. As the BWE info is inserted into bit-stream + * we need a valid info right before the encodeLB function is going to + * generating a bit-stream. That is when lower-band buffer has already 20ms + * of audio, and the 3rd block of 10ms is going to be injected into encoder. + * + * Inputs: + * - instISAC : iSAC instance. + * + * Outputs: + * - bandwidthIndex : an index which has to be encoded in + * lower-band bit-stream, indicating the + * bandwidth of there-to-here channel. + * - jitterInfo : this indicates if the jitter is high + * or low and it is encoded in upper-band + * bit-stream. + * + */ +static void GetSendBandwidthInfo( + ISACMainStruct* instISAC, + WebRtc_Word16* bandwidthIndex, + WebRtc_Word16* jitterInfo) +{ + if((instISAC->instLB.ISACencLB_obj.buffer_index == + (FRAMESAMPLES_10ms << 1)) && + (instISAC->instLB.ISACencLB_obj.frame_nb == 0)) + { + /* bandwidth estimation and coding */ + WebRtcIsac_GetDownlinkBwJitIndexImpl(&(instISAC->bwestimator_obj), + bandwidthIndex, jitterInfo, instISAC->decoderSamplingRateKHz); + } +} + + +/**************************************************************************** + * WebRtcIsac_AssignSize(...) + * + * This function returns the size of the ISAC instance, so that the instance + * can be created out side iSAC. + * + * Output: + * - sizeinbytes : number of bytes needed to allocate for the + * instance. + * + * Return value : 0 - Ok + * -1 - Error + */ +WebRtc_Word16 WebRtcIsac_AssignSize( + int *sizeInBytes) +{ + *sizeInBytes = sizeof(ISACMainStruct) * 2 / sizeof(WebRtc_Word16); + return 0; +} + + +/**************************************************************************** + * WebRtcIsac_Assign(...) + * + * This function assignes the memory already created to the ISAC instance. + * + * Input: + * - ISAC_main_inst : address of the pointer to the coder instance. + * - instISAC_Addr : the already allocaded memeory, where we put the + * iSAC struct + * + * Return value : 0 - Ok + * -1 - Error + */ +WebRtc_Word16 WebRtcIsac_Assign( + ISACStruct** ISAC_main_inst, + void* instISAC_Addr) +{ + if(instISAC_Addr != NULL) + { + ISACMainStruct* instISAC = (ISACMainStruct*)instISAC_Addr; + instISAC->errorCode = 0; + instISAC->initFlag = 0; + + // Assign the address + *ISAC_main_inst = (ISACStruct*)instISAC_Addr; + + // Default is wideband. + instISAC->encoderSamplingRateKHz = kIsacWideband; + instISAC->decoderSamplingRateKHz = kIsacWideband; + instISAC->bandwidthKHz = isac8kHz; + return 0; + } + else + { + return -1; + } +} + + +/**************************************************************************** + * WebRtcIsac_Create(...) + * + * This function creates an ISAC instance, which will contain the state + * information for one coding/decoding channel. + * + * Input: + * - ISAC_main_inst : address of the pointer to the coder instance. + * + * Return value : 0 - Ok + * -1 - Error + */ +WebRtc_Word16 WebRtcIsac_Create( + ISACStruct** ISAC_main_inst) +{ + ISACMainStruct* instISAC; + + instISAC = (ISACMainStruct*)WEBRTC_SPL_VNEW(ISACMainStruct, 1); + *ISAC_main_inst = (ISACStruct*)instISAC; + if(*ISAC_main_inst != NULL) + { + instISAC->errorCode = 0; + instISAC->initFlag = 0; + // Default is wideband + instISAC->bandwidthKHz = isac8kHz; + instISAC->encoderSamplingRateKHz = kIsacWideband; + instISAC->decoderSamplingRateKHz = kIsacWideband; + return 0; + } + else + { + return -1; + } +} + + +/**************************************************************************** + * WebRtcIsac_Free(...) + * + * This function frees the ISAC instance created at the beginning. + * + * Input: + * - ISAC_main_inst : a ISAC instance. + * + * Return value : 0 - Ok + * -1 - Error + */ +WebRtc_Word16 WebRtcIsac_Free( + ISACStruct* ISAC_main_inst) +{ + ISACMainStruct* instISAC; + + instISAC = (ISACMainStruct*)ISAC_main_inst; + WEBRTC_SPL_FREE(instISAC); + return 0; +} + + +/**************************************************************************** + * EncoderInitLb(...) - internal function for initialization of + * Lower Band + * EncoderInitUb(...) - internal function for initialization of + * Upper Band + * WebRtcIsac_EncoderInit(...) - API function + * + * This function initializes a ISAC instance prior to the encoder calls. + * + * Input: + * - ISAC_main_inst : ISAC instance. + * - CodingMode : 0 -> Bit rate and frame length are automatically + * adjusted to available bandwidth on + * transmission channel, applicable just to + * wideband mode. + * 1 -> User sets a frame length and a target bit + * rate which is taken as the maximum + * short-term average bit rate. + * + * Return value : 0 - Ok + * -1 - Error + */ +static WebRtc_Word16 EncoderInitLb( + ISACLBStruct* instLB, + WebRtc_Word16 codingMode, + enum IsacSamplingRate sampRate) +{ + WebRtc_Word16 statusInit = 0; + int k; + + /* Init stream vector to zero */ + for(k=0; k < STREAM_SIZE_MAX_60; k++) + { + instLB->ISACencLB_obj.bitstr_obj.stream[k] = 0; + } + + if((codingMode == 1) || (sampRate == kIsacSuperWideband)) + { + // 30 ms frame-size if either in super-wideband or + // instanteneous mode (I-mode) + instLB->ISACencLB_obj.new_framelength = 480; + } + else + { + instLB->ISACencLB_obj.new_framelength = INITIAL_FRAMESAMPLES; + } + + WebRtcIsac_InitMasking(&instLB->ISACencLB_obj.maskfiltstr_obj); + WebRtcIsac_InitPreFilterbank(&instLB->ISACencLB_obj.prefiltbankstr_obj); + WebRtcIsac_InitPitchFilter(&instLB->ISACencLB_obj.pitchfiltstr_obj); + WebRtcIsac_InitPitchAnalysis( + &instLB->ISACencLB_obj.pitchanalysisstr_obj); + + + instLB->ISACencLB_obj.buffer_index = 0; + instLB->ISACencLB_obj.frame_nb = 0; + /* default for I-mode */ + instLB->ISACencLB_obj.bottleneck = 32000; + instLB->ISACencLB_obj.current_framesamples = 0; + instLB->ISACencLB_obj.s2nr = 0; + instLB->ISACencLB_obj.payloadLimitBytes30 = STREAM_SIZE_MAX_30; + instLB->ISACencLB_obj.payloadLimitBytes60 = STREAM_SIZE_MAX_60; + instLB->ISACencLB_obj.maxPayloadBytes = STREAM_SIZE_MAX_60; + instLB->ISACencLB_obj.maxRateInBytes = STREAM_SIZE_MAX_30; + instLB->ISACencLB_obj.enforceFrameSize = 0; + /* invalid value prevents getRedPayload to + run before encoder is called */ + instLB->ISACencLB_obj.lastBWIdx = -1; + return statusInit; +} + +static WebRtc_Word16 EncoderInitUb( + ISACUBStruct* instUB, + WebRtc_Word16 bandwidth) +{ + WebRtc_Word16 statusInit = 0; + int k; + + /* Init stream vector to zero */ + for(k = 0; k < STREAM_SIZE_MAX_60; k++) + { + instUB->ISACencUB_obj.bitstr_obj.stream[k] = 0; + } + + WebRtcIsac_InitMasking(&instUB->ISACencUB_obj.maskfiltstr_obj); + WebRtcIsac_InitPreFilterbank(&instUB->ISACencUB_obj.prefiltbankstr_obj); + + if(bandwidth == isac16kHz) + { + instUB->ISACencUB_obj.buffer_index = LB_TOTAL_DELAY_SAMPLES; + } + else + { + instUB->ISACencUB_obj.buffer_index = 0; + } + /* default for I-mode */ + instUB->ISACencUB_obj.bottleneck = 32000; + // These store the limits for the wideband + super-wideband bit-stream. + instUB->ISACencUB_obj.maxPayloadSizeBytes = STREAM_SIZE_MAX_30 << 1; + // This has to be updated after each lower-band encoding to guarantee + // a correct payload-limitation. + instUB->ISACencUB_obj.numBytesUsed = 0; + memset(instUB->ISACencUB_obj.data_buffer_float, 0, + (MAX_FRAMESAMPLES + LB_TOTAL_DELAY_SAMPLES) * sizeof(float)); + + memcpy(&(instUB->ISACencUB_obj.lastLPCVec), + WebRtcIsac_kMeanLarUb16, sizeof(double) * UB_LPC_ORDER); + + return statusInit; +} + + +WebRtc_Word16 WebRtcIsac_EncoderInit( + ISACStruct* ISAC_main_inst, + WebRtc_Word16 codingMode) +{ + ISACMainStruct *instISAC; + WebRtc_Word16 status; + + instISAC = (ISACMainStruct*)ISAC_main_inst; + + if((codingMode != 0) && (codingMode != 1)) + { + instISAC->errorCode = ISAC_DISALLOWED_CODING_MODE; + return -1; + } + // default bottleneck + instISAC->bottleneck = MAX_ISAC_BW; + + if(instISAC->encoderSamplingRateKHz == kIsacWideband) + { + instISAC->bandwidthKHz = isac8kHz; + instISAC->maxPayloadSizeBytes = STREAM_SIZE_MAX_60; + instISAC->maxRateBytesPer30Ms = STREAM_SIZE_MAX_30; + } + else + { + instISAC->bandwidthKHz = isac16kHz; + instISAC->maxPayloadSizeBytes = STREAM_SIZE_MAX; + instISAC->maxRateBytesPer30Ms = STREAM_SIZE_MAX; + } + + // Channel-adaptive = 0; Instantaneous (Channel-independent) = 1; + instISAC->codingMode = codingMode; + + WebRtcIsac_InitBandwidthEstimator(&instISAC->bwestimator_obj, + instISAC->encoderSamplingRateKHz, + instISAC->decoderSamplingRateKHz); + + WebRtcIsac_InitRateModel(&instISAC->rate_data_obj); + /* default for I-mode */ + instISAC->MaxDelay = 10.0; + + status = EncoderInitLb(&instISAC->instLB, codingMode, + instISAC->encoderSamplingRateKHz); + if(status < 0) + { + instISAC->errorCode = -status; + return -1; + } + + if(instISAC->encoderSamplingRateKHz == kIsacSuperWideband) + { + // Initialize encoder filter-bank. + memset(instISAC->analysisFBState1, 0, + FB_STATE_SIZE_WORD32 * sizeof(WebRtc_Word32)); + memset(instISAC->analysisFBState2, 0, + FB_STATE_SIZE_WORD32 * sizeof(WebRtc_Word32)); + + status = EncoderInitUb(&(instISAC->instUB), + instISAC->bandwidthKHz); + if(status < 0) + { + instISAC->errorCode = -status; + return -1; + } + } + // Initializtion is successful, set the flag + instISAC->initFlag |= BIT_MASK_ENC_INIT; + return 0; +} + + +/**************************************************************************** + * WebRtcIsac_Encode(...) + * + * This function encodes 10ms frame(s) and inserts it into a package. + * Input speech length has to be 160 samples (10ms). The encoder buffers those + * 10ms frames until it reaches the chosen Framesize (480 or 960 samples + * corresponding to 30 or 60 ms frames), and then proceeds to the encoding. + * + * Input: + * - ISAC_main_inst : ISAC instance. + * - speechIn : input speech vector. + * + * Output: + * - encoded : the encoded data vector + * + * Return value: + * : >0 - Length (in bytes) of coded data + * : 0 - The buffer didn't reach the chosen + * frameSize so it keeps buffering speech + * samples. + * : -1 - Error + */ +WebRtc_Word16 WebRtcIsac_Encode( + ISACStruct* ISAC_main_inst, + const WebRtc_Word16* speechIn, + WebRtc_Word16* encoded) +{ + ISACMainStruct* instISAC; + ISACLBStruct* instLB; + ISACUBStruct* instUB; + + float inFrame[FRAMESAMPLES_10ms]; + WebRtc_Word16 speechInLB[FRAMESAMPLES_10ms]; + WebRtc_Word16 speechInUB[FRAMESAMPLES_10ms]; + WebRtc_Word16 streamLenLB; + WebRtc_Word16 streamLenUB; + WebRtc_Word16 streamLen; + WebRtc_Word16 k; + WebRtc_UWord8* ptrEncodedUW8 = (WebRtc_UWord8*)encoded; + int garbageLen; + WebRtc_Word32 bottleneck; + WebRtc_Word16 bottleneckIdx = 0; + WebRtc_Word16 jitterInfo = 0; + + instISAC = (ISACMainStruct*)ISAC_main_inst; + instLB = &(instISAC->instLB); + instUB = &(instISAC->instUB); + + /* check if encoder initiated */ + if((instISAC->initFlag & BIT_MASK_ENC_INIT) != + BIT_MASK_ENC_INIT) + { + instISAC->errorCode = ISAC_ENCODER_NOT_INITIATED; + return -1; + } + + if(instISAC->encoderSamplingRateKHz == kIsacSuperWideband) + { + WebRtcSpl_AnalysisQMF(speechIn, speechInLB, speechInUB, + instISAC->analysisFBState1, instISAC->analysisFBState2); + + /* convert from fixed to floating point */ + for(k = 0; k < FRAMESAMPLES_10ms; k++) + { + inFrame[k] = (float)speechInLB[k]; + } + } + else + { + for(k = 0; k < FRAMESAMPLES_10ms; k++) + { + inFrame[k] = (float) speechIn[k]; + } + } + + /* add some noise to avoid denormal numbers */ + inFrame[0] += (float)1.23455334e-3; + inFrame[1] -= (float)2.04324239e-3; + inFrame[2] += (float)1.90854954e-3; + inFrame[9] += (float)1.84854878e-3; + + + // This function will update the bottleneck if required + UpdateBottleneck(instISAC); + + // Get the bandwith information which has to be sent to the other side + GetSendBandwidthInfo(instISAC, &bottleneckIdx, &jitterInfo); + + // + // ENCODE LOWER-BAND + // + streamLenLB = WebRtcIsac_EncodeLb(inFrame, &instLB->ISACencLB_obj, + instISAC->codingMode, bottleneckIdx); + + if(streamLenLB < 0) + { + return -1; + } + + if(instISAC->encoderSamplingRateKHz == kIsacSuperWideband) + { + instUB = &(instISAC->instUB); + + // convert to float + for(k = 0; k < FRAMESAMPLES_10ms; k++) + { + inFrame[k] = (float) speechInUB[k]; + } + + /* add some noise to avoid denormal numbers */ + inFrame[0] += (float)1.23455334e-3; + inFrame[1] -= (float)2.04324239e-3; + inFrame[2] += (float)1.90854954e-3; + inFrame[9] += (float)1.84854878e-3; + + // Tell to upper-band the number of bytes used so far. + // This is for payload limitation. + instUB->ISACencUB_obj.numBytesUsed = streamLenLB + 1 + + LEN_CHECK_SUM_WORD8; + + // + // ENCODE UPPER-BAND + // + switch(instISAC->bandwidthKHz) + { + case isac12kHz: + { + streamLenUB = WebRtcIsac_EncodeUb12(inFrame, + &instUB->ISACencUB_obj, + jitterInfo); + break; + } + case isac16kHz: + { + streamLenUB = WebRtcIsac_EncodeUb16(inFrame, + &instUB->ISACencUB_obj, + jitterInfo); + break; + } + case isac8kHz: + { + streamLenUB = 0; + break; + } + default: + return -1; + } + + if((streamLenUB < 0) && + (streamLenUB != -ISAC_PAYLOAD_LARGER_THAN_LIMIT)) + { + // an error has happened but this is not the error due to a + // bit-stream larger than the limit + return -1; + } + + if(streamLenLB == 0) + { + return 0; + } + + // One bite is allocated for the length. According to older decoders + // so the length bit-stream plus one byte for size and + // LEN_CHECK_SUM_WORD8 for the checksum should be less than or equal + // to 255. + if((streamLenUB > (255 - (LEN_CHECK_SUM_WORD8 + 1))) || + (streamLenUB == -ISAC_PAYLOAD_LARGER_THAN_LIMIT)) + { + // we have got a too long bit-stream we skip the upper-band + // bit-stream for this frame. + streamLenUB = 0; + } + + memcpy(ptrEncodedUW8, instLB->ISACencLB_obj.bitstr_obj.stream, + streamLenLB); + streamLen = streamLenLB; + if(streamLenUB > 0) + { + ptrEncodedUW8[streamLenLB] = (WebRtc_UWord8)(streamLenUB + 1 + + LEN_CHECK_SUM_WORD8); + memcpy(&ptrEncodedUW8[streamLenLB + 1], + instUB->ISACencUB_obj.bitstr_obj.stream, streamLenUB); + streamLen += ptrEncodedUW8[streamLenLB]; + } + else + { + ptrEncodedUW8[streamLenLB] = 0; + } + } + else + { + if(streamLenLB == 0) + { + return 0; + } + memcpy(ptrEncodedUW8, instLB->ISACencLB_obj.bitstr_obj.stream, + streamLenLB); + streamLenUB = 0; + streamLen = streamLenLB; + } + + // Add Garbage if required. + WebRtcIsac_GetUplinkBandwidth(&instISAC->bwestimator_obj, &bottleneck); + if(instISAC->codingMode == 0) + { + int minBytes; + int limit; + WebRtc_UWord8* ptrGarbage; + + instISAC->MaxDelay = (double)WebRtcIsac_GetUplinkMaxDelay( + &instISAC->bwestimator_obj); + + /* update rate model and get minimum number of bytes in this packet */ + minBytes = WebRtcIsac_GetMinBytes(&(instISAC->rate_data_obj), + streamLen, instISAC->instLB.ISACencLB_obj.current_framesamples, + bottleneck, instISAC->MaxDelay, instISAC->bandwidthKHz); + + /* Make sure MinBytes does not exceed packet size limit */ + if(instISAC->bandwidthKHz == isac8kHz) + { + if(instLB->ISACencLB_obj.current_framesamples == FRAMESAMPLES) + { + limit = instLB->ISACencLB_obj.payloadLimitBytes30; + } + else + { + limit = instLB->ISACencLB_obj.payloadLimitBytes60; + } + } + else + { + limit = instUB->ISACencUB_obj.maxPayloadSizeBytes; + } + minBytes = (minBytes > limit)? limit:minBytes; + + /* Make sure we don't allow more than 255 bytes of garbage data. + We store the length of the garbage data in 8 bits in the bitstream, + 255 is the max garbage length we can signal using 8 bits. */ + if((instISAC->bandwidthKHz == isac8kHz) || + (streamLenUB == 0)) + { + ptrGarbage = &ptrEncodedUW8[streamLenLB]; + limit = streamLen + 255; + } + else + { + ptrGarbage = &ptrEncodedUW8[streamLenLB + 1 + streamLenUB]; + limit = streamLen + (255 - ptrEncodedUW8[streamLenLB]); + } + minBytes = (minBytes > limit)? limit:minBytes; + + garbageLen = (minBytes > streamLen)? (minBytes - streamLen):0; + + /* Save data for creation of multiple bitstreams */ + //ISACencLB_obj->SaveEnc_obj.minBytes = MinBytes; + + /* if bitstream is too short, add garbage at the end */ + if(garbageLen > 0) + { + for(k = 0; k < garbageLen; k++) + { + ptrGarbage[k] = (WebRtc_UWord8)(rand() & 0xFF); + } + + // for a correct length of the upper-band bit-stream together + // with the garbage. Garbage is embeded in upper-band bit-stream. + // That is the only way to preserve backward compatibility. + if((instISAC->bandwidthKHz == isac8kHz) || + (streamLenUB == 0)) + { + ptrEncodedUW8[streamLenLB] = (WebRtc_UWord8)garbageLen; + } + else + { + ptrEncodedUW8[streamLenLB] += (WebRtc_UWord8)garbageLen; + // write the length of the garbage at the end of the upper-band + // bit-stream, if exists. This helps for sanity check. + ptrEncodedUW8[streamLenLB + 1 + streamLenUB] = (WebRtc_UWord8)garbageLen; + + } + + streamLen += garbageLen; + } + } + else + { + /* update rate model */ + WebRtcIsac_UpdateRateModel(&instISAC->rate_data_obj, streamLen, + instISAC->instLB.ISACencLB_obj.current_framesamples, bottleneck); + garbageLen = 0; + } + + // Generate CRC if required. + if((instISAC->bandwidthKHz != isac8kHz) && + (streamLenUB > 0)) + { + WebRtc_UWord32 crc; + + WebRtcIsac_GetCrc((WebRtc_Word16*)(&(ptrEncodedUW8[streamLenLB + 1])), + streamLenUB + garbageLen, &crc); +#ifndef WEBRTC_BIG_ENDIAN + for(k = 0; k < LEN_CHECK_SUM_WORD8; k++) + { + ptrEncodedUW8[streamLen - LEN_CHECK_SUM_WORD8 + k] = + (WebRtc_UWord8)((crc >> (24 - k * 8)) & 0xFF); + } +#else + memcpy(&ptrEncodedUW8[streamLenLB + streamLenUB + 1], &crc, + LEN_CHECK_SUM_WORD8); +#endif + } + + return streamLen; +} + + +/****************************************************************************** + * WebRtcIsac_GetNewBitStream(...) + * + * This function returns encoded data, with the recieved bwe-index in the + * stream. If the rate is set to a value less than bottleneck of codec + * the new bistream will be re-encoded with the given target rate. + * It should always return a complete packet, i.e. only called once + * even for 60 msec frames. + * + * NOTE 1! This function does not write in the ISACStruct, it is not allowed. + * NOTE 3! Rates larger than the bottleneck of the codec will be limited + * to the current bottleneck. + * + * Input: + * - ISAC_main_inst : ISAC instance. + * - bweIndex : Index of bandwidth estimate to put in new + * bitstream + * - rate : target rate of the transcoder is bits/sec. + * Valid values are the accepted rate in iSAC, + * i.e. 10000 to 56000. + * + * Output: + * - encoded : The encoded data vector + * + * Return value : >0 - Length (in bytes) of coded data + * -1 - Error or called in SWB mode + * NOTE! No error code is written to + * the struct since it is only allowed to read + * the struct. + */ +WebRtc_Word16 WebRtcIsac_GetNewBitStream( + ISACStruct* ISAC_main_inst, + WebRtc_Word16 bweIndex, + WebRtc_Word16 jitterInfo, + WebRtc_Word32 rate, + WebRtc_Word16* encoded, + WebRtc_Word16 isRCU) +{ + Bitstr iSACBitStreamInst; /* Local struct for bitstream handling */ + WebRtc_Word16 streamLenLB; + WebRtc_Word16 streamLenUB; + WebRtc_Word16 totalStreamLen; + double gain2; + double gain1; + float scale; + enum ISACBandwidth bandwidthKHz; + double rateLB; + double rateUB; + WebRtc_Word32 currentBN; + ISACMainStruct* instISAC; + WebRtc_UWord8* encodedPtrUW8 = (WebRtc_UWord8*)encoded; + WebRtc_UWord32 crc; +#ifndef WEBRTC_BIG_ENDIAN + WebRtc_Word16 k; +#endif + + instISAC = (ISACMainStruct*)ISAC_main_inst; + + if((instISAC->initFlag & BIT_MASK_ENC_INIT) != + BIT_MASK_ENC_INIT) + { + return -1; + } + + // Get the bottleneck of this iSAC and limit the + // given rate to the current bottleneck. + WebRtcIsac_GetUplinkBw(ISAC_main_inst, ¤tBN); + if(rate > currentBN) + { + rate = currentBN; + } + + if(WebRtcIsac_RateAllocation(rate, &rateLB, &rateUB, &bandwidthKHz) < 0) + { + return -1; + } + + // Cannot transcode from 16 kHz to 12 kHz + if((bandwidthKHz == isac12kHz) && + (instISAC->bandwidthKHz == isac16kHz)) + { + return -1; + } + + // These gains are in dB + // gain for the given rate. + gain1 = WebRtcIsac_GetSnr(rateLB, + instISAC->instLB.ISACencLB_obj.current_framesamples); + // gain of this iSAC + gain2 = WebRtcIsac_GetSnr( + instISAC->instLB.ISACencLB_obj.bottleneck, + instISAC->instLB.ISACencLB_obj.current_framesamples); + + // scale is the ratio of two gains in normal domain. + scale = (float)pow(10, (gain1 - gain2) / 20.0); + // change the scale if this is a RCU bit-stream. + scale = (isRCU)? (scale * RCU_TRANSCODING_SCALE):scale; + + streamLenLB = WebRtcIsac_EncodeStoredDataLb( + &instISAC->instLB.ISACencLB_obj.SaveEnc_obj, &iSACBitStreamInst, + bweIndex, scale); + + if(streamLenLB < 0) + { + return -1; + } + + /* convert from bytes to WebRtc_Word16 */ + memcpy(encoded, iSACBitStreamInst.stream, streamLenLB); + + if(bandwidthKHz == isac8kHz) + { + return streamLenLB; + } + + totalStreamLen = streamLenLB; + // super-wideband is always at 30ms. + // These gains are in dB + // gain for the given rate. + gain1 = WebRtcIsac_GetSnr(rateUB, FRAMESAMPLES); + // gain of this iSAC + gain2 = WebRtcIsac_GetSnr( + instISAC->instUB.ISACencUB_obj.bottleneck, FRAMESAMPLES); + + // scale is the ratio of two gains in normal domain. + scale = (float)pow(10, (gain1 - gain2) / 20.0); + + // change the scale if this is a RCU bit-stream. + scale = (isRCU)? (scale * RCU_TRANSCODING_SCALE_UB):scale; + + switch(instISAC->bandwidthKHz) + { + case isac12kHz: + { + streamLenUB = WebRtcIsac_EncodeStoredDataUb12( + &(instISAC->instUB.ISACencUB_obj.SaveEnc_obj), + &iSACBitStreamInst, jitterInfo, scale); + break; + } + case isac16kHz: + { + streamLenUB = WebRtcIsac_EncodeStoredDataUb16( + &(instISAC->instUB.ISACencUB_obj.SaveEnc_obj), + &iSACBitStreamInst, jitterInfo, scale); + break; + } + default: + return -1; + } + + if(streamLenUB < 0) + { + return -1; + } + + if(streamLenUB + 1 + LEN_CHECK_SUM_WORD8 > 255) + { + return streamLenLB; + } + + totalStreamLen = streamLenLB + streamLenUB + 1 + LEN_CHECK_SUM_WORD8; + encodedPtrUW8[streamLenLB] = streamLenUB + 1 + LEN_CHECK_SUM_WORD8; + + memcpy(&encodedPtrUW8[streamLenLB+1], iSACBitStreamInst.stream, + streamLenUB); + + WebRtcIsac_GetCrc((WebRtc_Word16*)(&(encodedPtrUW8[streamLenLB + 1])), + streamLenUB, &crc); +#ifndef WEBRTC_BIG_ENDIAN + for(k = 0; k < LEN_CHECK_SUM_WORD8; k++) + { + encodedPtrUW8[totalStreamLen - LEN_CHECK_SUM_WORD8 + k] = + (WebRtc_UWord8)((crc >> (24 - k * 8)) & 0xFF); + } +#else + memcpy(&encodedPtrUW8[streamLenLB + streamLenUB + 1], &crc, + LEN_CHECK_SUM_WORD8); +#endif + + + return totalStreamLen; +} + + +/**************************************************************************** + * DecoderInitLb(...) - internal function for initialization of + * Lower Band + * DecoderInitUb(...) - internal function for initialization of + * Upper Band + * WebRtcIsac_DecoderInit(...) - API function + * + * This function initializes a ISAC instance prior to the decoder calls. + * + * Input: + * - ISAC_main_inst : ISAC instance. + * + * Return value + * : 0 - Ok + * -1 - Error + */ +static WebRtc_Word16 DecoderInitLb( + ISACLBStruct* instISAC) +{ + int i; + /* Init stream vector to zero */ + for (i=0; iISACdecLB_obj.bitstr_obj.stream[i] = 0; + } + + WebRtcIsac_InitMasking(&instISAC->ISACdecLB_obj.maskfiltstr_obj); + WebRtcIsac_InitPostFilterbank( + &instISAC->ISACdecLB_obj.postfiltbankstr_obj); + WebRtcIsac_InitPitchFilter(&instISAC->ISACdecLB_obj.pitchfiltstr_obj); + + return (0); +} + +static WebRtc_Word16 DecoderInitUb( + ISACUBStruct* instISAC) +{ + int i; + /* Init stream vector to zero */ + for (i = 0; i < STREAM_SIZE_MAX_60; i++) + { + instISAC->ISACdecUB_obj.bitstr_obj.stream[i] = 0; + } + + WebRtcIsac_InitMasking(&instISAC->ISACdecUB_obj.maskfiltstr_obj); + WebRtcIsac_InitPostFilterbank( + &instISAC->ISACdecUB_obj.postfiltbankstr_obj); + return (0); +} + +WebRtc_Word16 WebRtcIsac_DecoderInit( + ISACStruct *ISAC_main_inst) +{ + ISACMainStruct* instISAC; + + instISAC = (ISACMainStruct*)ISAC_main_inst; + + if(DecoderInitLb(&instISAC->instLB) < 0) + { + return -1; + } + + if(instISAC->decoderSamplingRateKHz == kIsacSuperWideband) + { + memset(instISAC->synthesisFBState1, 0, + FB_STATE_SIZE_WORD32 * sizeof(WebRtc_Word32)); + memset(instISAC->synthesisFBState2, 0, + FB_STATE_SIZE_WORD32 * sizeof(WebRtc_Word32)); + + if(DecoderInitUb(&(instISAC->instUB)) < 0) + { + return -1; + } + } + + if((instISAC->initFlag & BIT_MASK_ENC_INIT) != + BIT_MASK_ENC_INIT) + { + WebRtcIsac_InitBandwidthEstimator(&instISAC->bwestimator_obj, + instISAC->encoderSamplingRateKHz, + instISAC->decoderSamplingRateKHz); + } + + instISAC->initFlag |= BIT_MASK_DEC_INIT; + + instISAC->resetFlag_8kHz = 0; + + return 0; +} + + +/**************************************************************************** + * WebRtcIsac_UpdateBwEstimate(...) + * + * This function updates the estimate of the bandwidth. + * + * Input: + * - ISAC_main_inst : ISAC instance. + * - encoded : encoded ISAC frame(s). + * - packet_size : size of the packet. + * - rtp_seq_number : the RTP number of the packet. + * - arr_ts : the arrival time of the packet (from NetEq) + * in samples. + * + * Return value : 0 - Ok + * -1 - Error + */ +WebRtc_Word16 WebRtcIsac_UpdateBwEstimate( + ISACStruct* ISAC_main_inst, + const WebRtc_UWord16* encoded, + WebRtc_Word32 packet_size, + WebRtc_UWord16 rtp_seq_number, + WebRtc_UWord32 send_ts, + WebRtc_UWord32 arr_ts) +{ + ISACMainStruct *instISAC; + Bitstr streamdata; +#ifndef WEBRTC_BIG_ENDIAN + int k; +#endif + WebRtc_Word16 err; + + /* typecast pointer to real structure */ + instISAC = (ISACMainStruct *)ISAC_main_inst; + + /* check if decoder initiated */ + if((instISAC->initFlag & BIT_MASK_DEC_INIT) != + BIT_MASK_DEC_INIT) + { + instISAC->errorCode = ISAC_DECODER_NOT_INITIATED; + return -1; + } + + if(packet_size <= 0) + { + /* return error code if the packet length is null */ + instISAC->errorCode = ISAC_EMPTY_PACKET; + return -1; + } + + streamdata.W_upper = 0xFFFFFFFF; + streamdata.streamval = 0; + streamdata.stream_index = 0; + +#ifndef WEBRTC_BIG_ENDIAN + for(k = 0; k < 10; k++) + { + streamdata.stream[k] = (WebRtc_UWord8) ((encoded[k>>1] >> + ((k&1) << 3)) & 0xFF); + } +#else + memcpy(streamdata.stream, encoded, 10); +#endif + + err = WebRtcIsac_EstimateBandwidth(&instISAC->bwestimator_obj, &streamdata, + packet_size, rtp_seq_number, send_ts, arr_ts, + instISAC->encoderSamplingRateKHz, + instISAC->decoderSamplingRateKHz); + + if(err < 0) + { + /* return error code if something went wrong */ + instISAC->errorCode = -err; + return -1; + } + + return 0; +} + +static WebRtc_Word16 Decode( + ISACStruct* ISAC_main_inst, + const WebRtc_UWord16* encoded, + WebRtc_Word16 lenEncodedBytes, + WebRtc_Word16* decoded, + WebRtc_Word16* speechType, + WebRtc_Word16 isRCUPayload) +{ + /* number of samples (480 or 960), output from decoder + that were actually used in the encoder/decoder + (determined on the fly) */ + ISACMainStruct* instISAC; + ISACUBDecStruct* decInstUB; + ISACLBDecStruct* decInstLB; + + WebRtc_Word16 numSamplesLB; + WebRtc_Word16 numSamplesUB; + WebRtc_Word16 speechIdx; + float outFrame[MAX_FRAMESAMPLES]; + WebRtc_Word16 outFrameLB[MAX_FRAMESAMPLES]; + WebRtc_Word16 outFrameUB[MAX_FRAMESAMPLES]; + WebRtc_Word16 numDecodedBytesLB; + WebRtc_Word16 numDecodedBytesUB; + WebRtc_Word16 lenEncodedLBBytes; + WebRtc_Word16 validChecksum = 1; + WebRtc_Word16 k; + WebRtc_UWord8* ptrEncodedUW8 = (WebRtc_UWord8*)encoded; + WebRtc_UWord16 numLayer; + WebRtc_Word16 totSizeBytes; + WebRtc_Word16 err; + + instISAC = (ISACMainStruct*)ISAC_main_inst; + decInstUB = &(instISAC->instUB.ISACdecUB_obj); + decInstLB = &(instISAC->instLB.ISACdecLB_obj); + + /* check if decoder initiated */ + if((instISAC->initFlag & BIT_MASK_DEC_INIT) != + BIT_MASK_DEC_INIT) + { + instISAC->errorCode = ISAC_DECODER_NOT_INITIATED; + return -1; + } + + if(lenEncodedBytes <= 0) + { + /* return error code if the packet length is null */ + instISAC->errorCode = ISAC_EMPTY_PACKET; + return -1; + } + + // the size of the rncoded lower-band is bounded by + // STREAM_SIZE_MAX, + // If a payload with the size larger than STREAM_SIZE_MAX + // is received, it is not considered erroneous. + lenEncodedLBBytes = (lenEncodedBytes > STREAM_SIZE_MAX) + ? STREAM_SIZE_MAX:lenEncodedBytes; + + // Copy to lower-band bit-stream structure + memcpy(instISAC->instLB.ISACdecLB_obj.bitstr_obj.stream, ptrEncodedUW8, + lenEncodedLBBytes); + + // Regardless of that the current codec is setup to work in + // wideband or super-wideband, the decoding of the lower-band + // has to be performed. + numDecodedBytesLB = WebRtcIsac_DecodeLb(outFrame, decInstLB, + &numSamplesLB, isRCUPayload); + + // Check for error + if((numDecodedBytesLB < 0) || + (numDecodedBytesLB > lenEncodedLBBytes) || + (numSamplesLB > MAX_FRAMESAMPLES)) + { + instISAC->errorCode = ISAC_LENGTH_MISMATCH; + return -1; + } + + // Error Check, we accept multi-layer bit-stream + // This will limit number of iterations of the + // while loop. Even withouut this the number of iterations + // is limited. + numLayer = 1; + totSizeBytes = numDecodedBytesLB; + while(totSizeBytes != lenEncodedBytes) + { + if((totSizeBytes > lenEncodedBytes) || + (ptrEncodedUW8[totSizeBytes] == 0) || + (numLayer > MAX_NUM_LAYERS)) + { + instISAC->errorCode = ISAC_LENGTH_MISMATCH; + return -1; + } + totSizeBytes += ptrEncodedUW8[totSizeBytes]; + numLayer++; + } + + if(instISAC->decoderSamplingRateKHz == kIsacWideband) + { + for(k = 0; k < numSamplesLB; k++) + { + if(outFrame[k] > 32767) + { + decoded[k] = 32767; + } + else if(outFrame[k] < -32768) + { + decoded[k] = -32768; + } + else + { + decoded[k] = (WebRtc_Word16)WebRtcIsac_lrint(outFrame[k]); + } + } + numSamplesUB = 0; + } + else + { + WebRtc_UWord32 crc; + // We don't accept larger than 30ms (480 samples at lower-band) + // frame-size. + for(k = 0; k < numSamplesLB; k++) + { + if(outFrame[k] > 32767) + { + outFrameLB[k] = 32767; + } + else if(outFrame[k] < -32768) + { + outFrameLB[k] = -32768; + } + else + { + outFrameLB[k] = (WebRtc_Word16)WebRtcIsac_lrint(outFrame[k]); + } + } + + //numSamplesUB = numSamplesLB; + + // Check for possible error, and if upper-band stream exist. + if(numDecodedBytesLB == lenEncodedBytes) + { + // Decoding was successful. No super-wideband bitstream + // exists. + numSamplesUB = numSamplesLB; + memset(outFrameUB, 0, sizeof(WebRtc_Word16) * numSamplesUB); + + // Prepare for the potential increase of signal bandwidth + instISAC->resetFlag_8kHz = 2; + } + else + { + // this includes the check sum and the bytes that stores the + // length + WebRtc_Word16 lenNextStream = ptrEncodedUW8[numDecodedBytesLB]; + + // Is this garbage or valid super-wideband bit-stream? + // Check if checksum is valid + if(lenNextStream <= (LEN_CHECK_SUM_WORD8 + 1)) + { + // such a small second layer cannot be super-wideband layer. + // It must be a short garbage. + validChecksum = 0; + } + else + { + // Run CRC to see if the checksum match. + WebRtcIsac_GetCrc((WebRtc_Word16*)( + &ptrEncodedUW8[numDecodedBytesLB + 1]), + lenNextStream - LEN_CHECK_SUM_WORD8 - 1, &crc); + + validChecksum = 1; + for(k = 0; k < LEN_CHECK_SUM_WORD8; k++) + { + validChecksum &= (((crc >> (24 - k * 8)) & 0xFF) == + ptrEncodedUW8[numDecodedBytesLB + lenNextStream - + LEN_CHECK_SUM_WORD8 + k]); + } + } + + if(!validChecksum) + { + // this is a garbage, we have received a wideband + // bit-stream with garbage + numSamplesUB = numSamplesLB; + memset(outFrameUB, 0, sizeof(WebRtc_Word16) * numSamplesUB); + } + else + { + // A valid super-wideband biststream exists. + enum ISACBandwidth bandwidthKHz; + WebRtc_Word32 maxDelayBit; + + //instISAC->bwestimator_obj.incomingStreamSampFreq = + // kIsacSuperWideband; + // If we have super-wideband bit-stream, we cannot + // have 60 ms frame-size. + if(numSamplesLB > FRAMESAMPLES) + { + instISAC->errorCode = ISAC_LENGTH_MISMATCH; + return -1; + } + + // the rest of the bit-stream contains the upper-band + // bit-stream curently this is the only thing there, + // however, we might add more layers. + + // Have to exclude one byte where the length is stored + // and last 'LEN_CHECK_SUM_WORD8' bytes where the + // checksum is stored. + lenNextStream -= (LEN_CHECK_SUM_WORD8 + 1); + + memcpy(decInstUB->bitstr_obj.stream, + &ptrEncodedUW8[numDecodedBytesLB + 1], lenNextStream); + + // THIS IS THE FIRST DECODING + decInstUB->bitstr_obj.W_upper = 0xFFFFFFFF; + decInstUB->bitstr_obj.streamval = 0; + decInstUB->bitstr_obj.stream_index = 0; + + // Decode jitter infotmation + err = WebRtcIsac_DecodeJitterInfo(&decInstUB->bitstr_obj, + &maxDelayBit); + // error check + if(err < 0) + { + instISAC->errorCode = -err; + return -1; + } + + // Update jitter info which is in the upper-band bit-stream + // only if the encoder is in super-wideband. Otherwise, + // the jitter info is already embeded in bandwidth index + // and has been updated. + if(instISAC->encoderSamplingRateKHz == kIsacSuperWideband) + { + err = WebRtcIsac_UpdateUplinkJitter( + &(instISAC->bwestimator_obj), maxDelayBit); + if(err < 0) + { + instISAC->errorCode = -err; + return -1; + } + } + + // decode bandwidth information + err = WebRtcIsac_DecodeBandwidth(&decInstUB->bitstr_obj, + &bandwidthKHz); + if(err < 0) + { + instISAC->errorCode = -err; + return -1; + } + + switch(bandwidthKHz) + { + case isac12kHz: + { + numDecodedBytesUB = WebRtcIsac_DecodeUb12(outFrame, + decInstUB, isRCUPayload); + + // Hang-over for transient alleviation - + // wait two frames to add the upper band going up from 8 kHz + if (instISAC->resetFlag_8kHz > 0) + { + if (instISAC->resetFlag_8kHz == 2) + { + // Silence first and a half frame + memset(outFrame, 0, MAX_FRAMESAMPLES * + sizeof(float)); + } + else + { + const float rampStep = 2.0f / MAX_FRAMESAMPLES; + float rampVal = 0; + memset(outFrame, 0, (MAX_FRAMESAMPLES>>1) * + sizeof(float)); + + // Ramp up second half of second frame + for(k = MAX_FRAMESAMPLES/2; k < MAX_FRAMESAMPLES; k++) + { + outFrame[k] *= rampVal; + rampVal += rampStep; + } + } + instISAC->resetFlag_8kHz -= 1; + } + + break; + } + case isac16kHz: + { + numDecodedBytesUB = WebRtcIsac_DecodeUb16(outFrame, + decInstUB, isRCUPayload); + break; + } + default: + return -1; + } + + // it might be less due to garbage. + if((numDecodedBytesUB != lenNextStream) && + (numDecodedBytesUB != (lenNextStream - ptrEncodedUW8[ + numDecodedBytesLB + 1 + numDecodedBytesUB]))) + { + instISAC->errorCode = ISAC_LENGTH_MISMATCH; + return -1; + } + + // If there is no error Upper-band always decodes + // 30 ms (480 samples) + numSamplesUB = FRAMESAMPLES; + + // Convert to W16 + for(k = 0; k < numSamplesUB; k++) + { + if(outFrame[k] > 32767) + { + outFrameUB[k] = 32767; + } + else if(outFrame[k] < -32768) + { + outFrameUB[k] = -32768; + } + else + { + outFrameUB[k] = (WebRtc_Word16)WebRtcIsac_lrint( + outFrame[k]); + } + } + } + } + + speechIdx = 0; + while(speechIdx < numSamplesLB) + { + WebRtcSpl_SynthesisQMF(&outFrameLB[speechIdx], + &outFrameUB[speechIdx], &decoded[(speechIdx<<1)], + instISAC->synthesisFBState1, instISAC->synthesisFBState2); + + speechIdx += FRAMESAMPLES_10ms; + } + } + *speechType = 0; + return (numSamplesLB + numSamplesUB); +} + + + + + + + +/**************************************************************************** + * WebRtcIsac_Decode(...) + * + * This function decodes a ISAC frame. Output speech length + * will be a multiple of 480 samples: 480 or 960 samples, + * depending on the frameSize (30 or 60 ms). + * + * Input: + * - ISAC_main_inst : ISAC instance. + * - encoded : encoded ISAC frame(s) + * - len : bytes in encoded vector + * + * Output: + * - decoded : The decoded vector + * + * Return value : >0 - number of samples in decoded vector + * -1 - Error + */ + +WebRtc_Word16 WebRtcIsac_Decode( + ISACStruct* ISAC_main_inst, + const WebRtc_UWord16* encoded, + WebRtc_Word16 lenEncodedBytes, + WebRtc_Word16* decoded, + WebRtc_Word16* speechType) +{ + WebRtc_Word16 isRCUPayload = 0; + return Decode(ISAC_main_inst, encoded, lenEncodedBytes, decoded, + speechType, isRCUPayload); +} + +/**************************************************************************** + * WebRtcIsac_DecodeRcu(...) + * + * This function decodes a redundant (RCU) iSAC frame. Function is called in + * NetEq with a stored RCU payload i case of packet loss. Output speech length + * will be a multiple of 480 samples: 480 or 960 samples, + * depending on the framesize (30 or 60 ms). + * + * Input: + * - ISAC_main_inst : ISAC instance. + * - encoded : encoded ISAC RCU frame(s) + * - len : bytes in encoded vector + * + * Output: + * - decoded : The decoded vector + * + * Return value : >0 - number of samples in decoded vector + * -1 - Error + */ + + + +WebRtc_Word16 WebRtcIsac_DecodeRcu( + ISACStruct* ISAC_main_inst, + const WebRtc_UWord16* encoded, + WebRtc_Word16 lenEncodedBytes, + WebRtc_Word16* decoded, + WebRtc_Word16* speechType) +{ + WebRtc_Word16 isRCUPayload = 1; + return Decode(ISAC_main_inst, encoded, lenEncodedBytes, decoded, + speechType, isRCUPayload); +} + + +/**************************************************************************** + * WebRtcIsac_DecodePlc(...) + * + * This function conducts PLC for ISAC frame(s). Output speech length + * will be a multiple of 480 samples: 480 or 960 samples, + * depending on the frameSize (30 or 60 ms). + * + * Input: + * - ISAC_main_inst : ISAC instance. + * - noOfLostFrames : Number of PLC frames to produce + * + * Output: + * - decoded : The decoded vector + * + * Return value : >0 - number of samples in decoded PLC vector + * -1 - Error + */ +WebRtc_Word16 WebRtcIsac_DecodePlc( + ISACStruct* ISAC_main_inst, + WebRtc_Word16* decoded, + WebRtc_Word16 noOfLostFrames) +{ + WebRtc_Word16 numSamples; + ISACMainStruct* instISAC; + + + /* typecast pointer to real structure */ + instISAC = (ISACMainStruct*)ISAC_main_inst; + + /* Limit number of frames to two = 60 msec. Otherwise we exceed data vectors */ + if(noOfLostFrames > 2) + { + noOfLostFrames = 2; + } + + /* Get the number of samples per frame */ + switch(instISAC->decoderSamplingRateKHz) + { + case kIsacWideband: + { + numSamples = 480 * noOfLostFrames; + break; + } + case kIsacSuperWideband: + { + numSamples = 960 * noOfLostFrames; + break; + } + default: + return -1; + } + + /* Set output samples to zero */ + memset(decoded, 0, numSamples * sizeof(WebRtc_Word16)); + return numSamples; +} + + +/**************************************************************************** + * ControlLb(...) - Internal function for controling Lower Band + * ControlUb(...) - Internal function for controling Upper Band + * WebRtcIsac_Control(...) - API function + * + * This function sets the limit on the short-term average bit rate and the + * frame length. Should be used only in Instantaneous mode. + * + * Input: + * - ISAC_main_inst : ISAC instance. + * - rate : limit on the short-term average bit rate, + * in bits/second (between 10000 and 32000) + * - frameSize : number of milliseconds per frame (30 or 60) + * + * Return value : 0 - ok + * -1 - Error + */ +static WebRtc_Word16 ControlLb( + ISACLBStruct* instISAC, + double rate, + WebRtc_Word16 frameSize) +{ + if((rate >= 10000) && (rate <= 32000)) + { + instISAC->ISACencLB_obj.bottleneck = rate; + } + else + { + return -ISAC_DISALLOWED_BOTTLENECK; + } + + if((frameSize == 30) || (frameSize == 60)) + { + instISAC->ISACencLB_obj.new_framelength = (FS/1000) * frameSize; + } + else + { + return -ISAC_DISALLOWED_FRAME_LENGTH; + } + + return 0; +} + +static WebRtc_Word16 ControlUb( + ISACUBStruct* instISAC, + double rate) +{ + if((rate >= 10000) && (rate <= 32000)) + { + instISAC->ISACencUB_obj.bottleneck = rate; + } + else + { + return -ISAC_DISALLOWED_BOTTLENECK; + } + return 0; +} + +WebRtc_Word16 WebRtcIsac_Control( + ISACStruct* ISAC_main_inst, + WebRtc_Word32 bottleneckBPS, + WebRtc_Word16 frameSize) +{ + ISACMainStruct *instISAC; + WebRtc_Word16 status; + double rateLB; + double rateUB; + enum ISACBandwidth bandwidthKHz; + + + /* Typecast pointer to real structure */ + instISAC = (ISACMainStruct*)ISAC_main_inst; + + if(instISAC->codingMode == 0) + { + /* in adaptive mode */ + instISAC->errorCode = ISAC_MODE_MISMATCH; + return -1; + } + + /* check if encoder initiated */ + if((instISAC->initFlag & BIT_MASK_ENC_INIT) != + BIT_MASK_ENC_INIT) + { + instISAC->errorCode = ISAC_ENCODER_NOT_INITIATED; + return -1; + } + + if(instISAC->encoderSamplingRateKHz == kIsacWideband) + { + // if the sampling rate is 16kHz then bandwith should be 8kHz, + // regardless of bottleneck. + bandwidthKHz = isac8kHz; + rateLB = (bottleneckBPS > 32000)? 32000:bottleneckBPS; + rateUB = 0; + } + else + { + if(WebRtcIsac_RateAllocation(bottleneckBPS, &rateLB, &rateUB, + &bandwidthKHz) < 0) + { + return -1; + } + } + + if((instISAC->encoderSamplingRateKHz == kIsacSuperWideband) && + (frameSize != 30) && + (bandwidthKHz != isac8kHz)) + { + // Cannot have 60 ms in super-wideband + instISAC->errorCode = ISAC_DISALLOWED_FRAME_LENGTH; + return -1; + } + + status = ControlLb(&instISAC->instLB, rateLB, frameSize); + if(status < 0) + { + instISAC->errorCode = -status; + return -1; + } + if(bandwidthKHz != isac8kHz) + { + status = ControlUb(&(instISAC->instUB), rateUB); + if(status < 0) + { + instISAC->errorCode = -status; + return -1; + } + } + + // + // Check if bandwidth is changing from wideband to super-wideband + // then we have to synch data buffer of lower & upper-band. also + // clean up the upper-band data buffer. + // + if((instISAC->bandwidthKHz == isac8kHz) && + (bandwidthKHz != isac8kHz)) + { + memset(instISAC->instUB.ISACencUB_obj.data_buffer_float, 0, + sizeof(float) * (MAX_FRAMESAMPLES + LB_TOTAL_DELAY_SAMPLES)); + + if(bandwidthKHz == isac12kHz) + { + instISAC->instUB.ISACencUB_obj.buffer_index = + instISAC->instLB.ISACencLB_obj.buffer_index; + } + else + { + instISAC->instUB.ISACencUB_obj.buffer_index = LB_TOTAL_DELAY_SAMPLES + + instISAC->instLB.ISACencLB_obj.buffer_index; + + memcpy(&(instISAC->instUB.ISACencUB_obj.lastLPCVec), + WebRtcIsac_kMeanLarUb16, sizeof(double) * UB_LPC_ORDER); + } + } + + // update the payload limit it the bandwidth is changing. + if(instISAC->bandwidthKHz != bandwidthKHz) + { + instISAC->bandwidthKHz = bandwidthKHz; + UpdatePayloadSizeLimit(instISAC); + } + instISAC->bottleneck = bottleneckBPS; + return 0; +} + + +/**************************************************************************** + * WebRtcIsac_ControlBwe(...) + * + * This function sets the initial values of bottleneck and frame-size if + * iSAC is used in channel-adaptive mode. Through this API, users can + * enforce a frame-size for all values of bottleneck. Then iSAC will not + * automatically change the frame-size. + * + * + * Input: + * - ISAC_main_inst : ISAC instance. + * - rateBPS : initial value of bottleneck in bits/second + * 10000 <= rateBPS <= 32000 is accepted + * For default bottleneck set rateBPS = 0 + * - frameSizeMs : number of milliseconds per frame (30 or 60) + * - enforceFrameSize : 1 to enforce the given frame-size through out + * the adaptation process, 0 to let iSAC change + * the frame-size if required. + * + * Return value : 0 - ok + * -1 - Error + */ +WebRtc_Word16 WebRtcIsac_ControlBwe( + ISACStruct* ISAC_main_inst, + WebRtc_Word32 bottleneckBPS, + WebRtc_Word16 frameSizeMs, + WebRtc_Word16 enforceFrameSize) +{ + ISACMainStruct *instISAC; + enum ISACBandwidth bandwidth; + + /* Typecast pointer to real structure */ + instISAC = (ISACMainStruct *)ISAC_main_inst; + + /* check if encoder initiated */ + if((instISAC->initFlag & BIT_MASK_ENC_INIT) != + BIT_MASK_ENC_INIT) + { + instISAC->errorCode = ISAC_ENCODER_NOT_INITIATED; + return -1; + } + + /* Check that we are in channel-adaptive mode, otherwise, return (-1) */ + if(instISAC->codingMode != 0) + { + instISAC->errorCode = ISAC_MODE_MISMATCH; + return -1; + } + if((frameSizeMs != 30) && + (instISAC->encoderSamplingRateKHz == kIsacSuperWideband)) + { + return -1; + } + + /* Set struct variable if enforceFrameSize is set. ISAC will then */ + /* keep the chosen frame size. */ + if((enforceFrameSize != 0) /*|| + (instISAC->samplingRateKHz == kIsacSuperWideband)*/) + { + instISAC->instLB.ISACencLB_obj.enforceFrameSize = 1; + } + else + { + instISAC->instLB.ISACencLB_obj.enforceFrameSize = 0; + } + + /* Set initial rate, if value between 10000 and 32000, */ + /* if rateBPS is 0, keep the default initial bottleneck value (15000) */ + if(bottleneckBPS != 0) + { + double rateLB; + double rateUB; + if(WebRtcIsac_RateAllocation(bottleneckBPS, &rateLB, &rateUB, &bandwidth) < 0) + { + return -1; + } + instISAC->bwestimator_obj.send_bw_avg = (float)bottleneckBPS; + instISAC->bandwidthKHz = bandwidth; + } + + /* Set initial frameSize. If enforceFrameSize is set the frame size will + not change */ + if(frameSizeMs != 0) + { + if((frameSizeMs == 30) || (frameSizeMs == 60)) + { + instISAC->instLB.ISACencLB_obj.new_framelength = (FS/1000) * + frameSizeMs; + //instISAC->bwestimator_obj.rec_header_rate = ((float)HEADER_SIZE * + // 8.0f * 1000.0f / (float)frameSizeMs); + } + else + { + instISAC->errorCode = ISAC_DISALLOWED_FRAME_LENGTH; + return -1; + } + } + return 0; +} + + +/**************************************************************************** + * WebRtcIsac_GetDownLinkBwIndex(...) + * + * This function returns index representing the Bandwidth estimate from + * other side to this side. + * + * Input: + * - ISAC_main_inst : iSAC struct + * + * Output: + * - bweIndex : Bandwidth estimate to transmit to other side. + * + */ +WebRtc_Word16 WebRtcIsac_GetDownLinkBwIndex( + ISACStruct* ISAC_main_inst, + WebRtc_Word16* bweIndex, + WebRtc_Word16* jitterInfo) +{ + ISACMainStruct *instISAC; + + /* typecast pointer to real structure */ + instISAC = (ISACMainStruct*)ISAC_main_inst; + + /* check if encoder initiated */ + if((instISAC->initFlag & BIT_MASK_DEC_INIT) != + BIT_MASK_DEC_INIT) + { + instISAC->errorCode = ISAC_ENCODER_NOT_INITIATED; + return -1; + } + + /* Call function to get Bandwidth Estimate */ + WebRtcIsac_GetDownlinkBwJitIndexImpl(&(instISAC->bwestimator_obj), + bweIndex, jitterInfo, instISAC->decoderSamplingRateKHz); + return 0; +} + + +/**************************************************************************** + * WebRtcIsac_UpdateUplinkBw(...) + * + * This function takes an index representing the Bandwidth estimate from + * this side to other side and updates BWE. + * + * Input: + * - ISAC_main_inst : iSAC struct + * - rateIndex : Bandwidth estimate from other side. + * + * Return value : 0 - ok + * -1 - index out of range + */ +WebRtc_Word16 WebRtcIsac_UpdateUplinkBw( + ISACStruct* ISAC_main_inst, + WebRtc_Word16 bweIndex) +{ + ISACMainStruct *instISAC; + WebRtc_Word16 returnVal; + + /* typecast pointer to real structure */ + instISAC = (ISACMainStruct *)ISAC_main_inst; + + /* check if encoder initiated */ + if((instISAC->initFlag & BIT_MASK_ENC_INIT) != + BIT_MASK_ENC_INIT) + { + instISAC->errorCode = ISAC_ENCODER_NOT_INITIATED; + return -1; + } + + /* Call function to get Bandwidth Estimate */ + returnVal = WebRtcIsac_UpdateUplinkBwImpl( + &(instISAC->bwestimator_obj), bweIndex, + instISAC->encoderSamplingRateKHz); + + if(returnVal < 0) + { + instISAC->errorCode = -returnVal; + return -1; + } + else + { + return 0; + } +} + + +/**************************************************************************** + * WebRtcIsac_ReadBwIndex(...) + * + * This function returns the index of the Bandwidth estimate from the + * bitstream. + * + * Input: + * - encoded : Encoded bitstream + * + * Output: + * - frameLength : Length of frame in packet (in samples) + * - bweIndex : Bandwidth estimate in bitstream + * + */ +WebRtc_Word16 WebRtcIsac_ReadBwIndex( + const WebRtc_Word16* encoded, + WebRtc_Word16* bweIndex) +{ + Bitstr streamdata; +#ifndef WEBRTC_BIG_ENDIAN + int k; +#endif + WebRtc_Word16 err; + + streamdata.W_upper = 0xFFFFFFFF; + streamdata.streamval = 0; + streamdata.stream_index = 0; + +#ifndef WEBRTC_BIG_ENDIAN + for(k = 0; k < 10; k++) + { + streamdata.stream[k] = (WebRtc_UWord8) ((encoded[k>>1] >> + ((k&1) << 3)) & 0xFF); + } +#else + memcpy(streamdata.stream, encoded, 10); +#endif + + /* decode frame length */ + err = WebRtcIsac_DecodeFrameLen(&streamdata, bweIndex); + if(err < 0) + { + return err; + } + + /* decode BW estimation */ + err = WebRtcIsac_DecodeSendBW(&streamdata, bweIndex); + if(err < 0) + { + return err; + } + + return 0; +} + + +/**************************************************************************** + * WebRtcIsac_ReadFrameLen(...) + * + * This function returns the length of the frame represented in the packet. + * + * Input: + * - encoded : Encoded bitstream + * + * Output: + * - frameLength : Length of frame in packet (in samples) + * + */ +WebRtc_Word16 WebRtcIsac_ReadFrameLen( + ISACStruct* ISAC_main_inst, + const WebRtc_Word16* encoded, + WebRtc_Word16* frameLength) +{ + Bitstr streamdata; +#ifndef WEBRTC_BIG_ENDIAN + int k; +#endif + WebRtc_Word16 err; + ISACMainStruct* instISAC; + + streamdata.W_upper = 0xFFFFFFFF; + streamdata.streamval = 0; + streamdata.stream_index = 0; + +#ifndef WEBRTC_BIG_ENDIAN + for (k=0; k<10; k++) { + streamdata.stream[k] = (WebRtc_UWord8) ((encoded[k>>1] >> + ((k&1) << 3)) & 0xFF); + } +#else + memcpy(streamdata.stream, encoded, 10); +#endif + + /* decode frame length */ + err = WebRtcIsac_DecodeFrameLen(&streamdata, frameLength); + if(err < 0) { + return -1; + } + instISAC = (ISACMainStruct*)ISAC_main_inst; + + if(instISAC->decoderSamplingRateKHz == kIsacSuperWideband) + { + // the decoded frame length indicates the number of samples in + // lower-band in this case, multiply by 2 to get the total number + // of samples. + *frameLength <<= 1; + } + + return 0; +} + + +/******************************************************************************* + * WebRtcIsac_GetNewFrameLen(...) + * + * returns the frame lenght (in samples) of the next packet. In the case of + * channel-adaptive mode, iSAC decides on its frame lenght based on the + * estimated bottleneck this allows a user to prepare for the next packet + * (at the encoder). + * + * The primary usage is in CE to make the iSAC works in channel-adaptive mode + * + * Input: + * - ISAC_main_inst : iSAC struct + * + * Return Value : frame lenght in samples + * + */ +WebRtc_Word16 WebRtcIsac_GetNewFrameLen( + ISACStruct *ISAC_main_inst) +{ + ISACMainStruct *instISAC; + + /* typecast pointer to real structure */ + instISAC = (ISACMainStruct *)ISAC_main_inst; + + /* Return new frame length */ + if(instISAC->encoderSamplingRateKHz == kIsacWideband) + { + return (instISAC->instLB.ISACencLB_obj.new_framelength); + } + else + { + return ((instISAC->instLB.ISACencLB_obj.new_framelength) << 1); + } +} + + +/**************************************************************************** + * WebRtcIsac_GetErrorCode(...) + * + * This function can be used to check the error code of an iSAC instance. + * When a function returns -1 a error code will be set for that instance. + * The function below extract the code of the last error that occured in + * the specified instance. + * + * Input: + * - ISAC_main_inst : ISAC instance + * + * Return value : Error code + */ +WebRtc_Word16 WebRtcIsac_GetErrorCode( + ISACStruct *ISAC_main_inst) +{ + ISACMainStruct *instISAC; + /* typecast pointer to real structure */ + instISAC = (ISACMainStruct *)ISAC_main_inst; + + return (instISAC->errorCode); +} + + +/**************************************************************************** + * WebRtcIsac_GetUplinkBw(...) + * + * This function outputs the target bottleneck of the codec. In + * channel-adaptive mode, the target bottleneck is specified through in-band + * signalling retreived by bandwidth estimator. + * In channel-independent, also called instantaneous mode, the target + * bottleneck is provided to the encoder by calling xxx_control(...) (if + * xxx_control is never called the default values is). + * Note that the output is the iSAC internal operating bottleneck whch might + * differ slightly from the one provided through xxx_control(). + * + * Input: + * - ISAC_main_inst : iSAC instance + * + * Output: + * - *bottleneck : bottleneck in bits/sec + * + * Return value : -1 if error happens + * 0 bit-rates computed correctly. + */ +WebRtc_Word16 WebRtcIsac_GetUplinkBw( + ISACStruct* ISAC_main_inst, + WebRtc_Word32* bottleneck) +{ + ISACMainStruct* instISAC = (ISACMainStruct *)ISAC_main_inst; + + if(instISAC->codingMode == 0) + { + // we are in adaptive mode then get the bottleneck from BWE + *bottleneck = (WebRtc_Word32)instISAC->bwestimator_obj.send_bw_avg; + } + else + { + *bottleneck = instISAC->bottleneck; + } + + if((*bottleneck > 32000) && (*bottleneck < 38000)) + { + *bottleneck = 32000; + } + else if((*bottleneck > 45000) && (*bottleneck < 50000)) + { + *bottleneck = 45000; + } + else if(*bottleneck > 56000) + { + *bottleneck = 56000; + } + + return 0; +} + + +/****************************************************************************** + * WebRtcIsac_SetMaxPayloadSize(...) + * + * This function sets a limit for the maximum payload size of iSAC. The same + * value is used both for 30 and 60 ms packets. If the encoder sampling rate + * is 16 kHz the maximum payload size is between 120 and 400 bytes. If the + * encoder sampling rate is 32 kHz the maximum payload size is between 120 + * and 600 bytes. + * + * --------------- + * IMPORTANT NOTES + * --------------- + * The size of a packet is limited to the minimum of 'max-payload-size' and + * 'max-rate.' For instance, let's assume the max-payload-size is set to + * 170 bytes, and max-rate is set to 40 kbps. Note that a limit of 40 kbps + * translates to 150 bytes for 30ms frame-size & 300 bytes for 60ms + * frame-size. Then a packet with a frame-size of 30 ms is limited to 150, + * i.e. min(170, 150), and a packet with 60 ms frame-size is limited to + * 170 bytes, i.e. min(170, 300). + * + * Input: + * - ISAC_main_inst : iSAC instance + * - maxPayloadBytes : maximum size of the payload in bytes + * valid values are between 100 and 400 bytes + * if encoder sampling rate is 16 kHz. For + * 32 kHz encoder sampling rate valid values + * are between 100 and 600 bytes. + * + * Return value : 0 if successful + * -1 if error happens + */ +WebRtc_Word16 WebRtcIsac_SetMaxPayloadSize( + ISACStruct* ISAC_main_inst, + WebRtc_Word16 maxPayloadBytes) +{ + ISACMainStruct *instISAC; + WebRtc_Word16 status = 0; + + /* typecast pointer to real structure */ + instISAC = (ISACMainStruct *)ISAC_main_inst; + + /* check if encoder initiated */ + if((instISAC->initFlag & BIT_MASK_ENC_INIT) != + BIT_MASK_ENC_INIT) + { + instISAC->errorCode = ISAC_ENCODER_NOT_INITIATED; + return -1; + } + + if(instISAC->encoderSamplingRateKHz == kIsacSuperWideband) + { + // sanity check + if(maxPayloadBytes < 120) + { + // maxRate is out of valid range + // set to the acceptable value and return -1. + maxPayloadBytes = 120; + status = -1; + } + + /* sanity check */ + if(maxPayloadBytes > STREAM_SIZE_MAX) + { + // maxRate is out of valid range + // set to the acceptable value and return -1. + maxPayloadBytes = STREAM_SIZE_MAX; + status = -1; + } + } + else + { + if(maxPayloadBytes < 120) + { + // max payload-size is out of valid range + // set to the acceptable value and return -1. + maxPayloadBytes = 120; + status = -1; + } + if(maxPayloadBytes > STREAM_SIZE_MAX_60) + { + // max payload-size is out of valid range + // set to the acceptable value and return -1. + maxPayloadBytes = STREAM_SIZE_MAX_60; + status = -1; + } + } + instISAC->maxPayloadSizeBytes = maxPayloadBytes; + UpdatePayloadSizeLimit(instISAC); + return status; +} + + +/****************************************************************************** + * WebRtcIsac_SetMaxRate(...) + * + * This function sets the maximum rate which the codec may not exceed for + * any signal packet. The maximum rate is defined and payload-size per + * frame-size in bits per second. + * + * The codec has a maximum rate of 53400 bits per second (200 bytes per 30 + * ms) if the encoder sampling rate is 16kHz, and 160 kbps (600 bytes/30 ms) + * if the encoder sampling rate is 32 kHz. + * + * It is possible to set a maximum rate between 32000 and 53400 bits/sec + * in wideband mode, and 32000 to 160000 bits/sec in super-wideband mode. + * + * --------------- + * IMPORTANT NOTES + * --------------- + * The size of a packet is limited to the minimum of 'max-payload-size' and + * 'max-rate.' For instance, let's assume the max-payload-size is set to + * 170 bytes, and max-rate is set to 40 kbps. Note that a limit of 40 kbps + * translates to 150 bytes for 30ms frame-size & 300 bytes for 60ms + * frame-size. Then a packet with a frame-size of 30 ms is limited to 150, + * i.e. min(170, 150), and a packet with 60 ms frame-size is limited to + * 170 bytes, min(170, 300). + * + * Input: + * - ISAC_main_inst : iSAC instance + * - maxRate : maximum rate in bits per second, + * valid values are 32000 to 53400 bits/sec in + * wideband mode, and 32000 to 160000 bits/sec in + * super-wideband mode. + * + * Return value : 0 if successful + * -1 if error happens + */ +WebRtc_Word16 WebRtcIsac_SetMaxRate( + ISACStruct* ISAC_main_inst, + WebRtc_Word32 maxRate) +{ + ISACMainStruct *instISAC; + WebRtc_Word16 maxRateInBytesPer30Ms; + WebRtc_Word16 status = 0; + + /* typecast pointer to real structure */ + instISAC = (ISACMainStruct *)ISAC_main_inst; + + /* check if encoder initiated */ + if((instISAC->initFlag & BIT_MASK_ENC_INIT) != + BIT_MASK_ENC_INIT) + { + instISAC->errorCode = ISAC_ENCODER_NOT_INITIATED; + return -1; + } + /* + Calculate maximum number of bytes per 30 msec packets for the + given maximum rate. Multiply with 30/1000 to get number of + bits per 30 ms, divide by 8 to get number of bytes per 30 ms: + maxRateInBytes = floor((maxRate * 30/1000) / 8); + */ + maxRateInBytesPer30Ms = (WebRtc_Word16)(maxRate*3/800); + + if(instISAC->encoderSamplingRateKHz == kIsacWideband) + { + if(maxRate < 32000) + { + // max rate is out of valid range + // set to the acceptable value and return -1. + maxRateInBytesPer30Ms = 120; + status = -1; + } + + if(maxRate > 53400) + { + // max rate is out of valid range + // set to the acceptable value and return -1. + maxRateInBytesPer30Ms = 200; + status = -1; + } + } + else + { + if(maxRateInBytesPer30Ms < 120) + { + // maxRate is out of valid range + // set to the acceptable value and return -1. + maxRateInBytesPer30Ms = 120; + status = -1; + } + + if(maxRateInBytesPer30Ms > STREAM_SIZE_MAX) + { + // maxRate is out of valid range + // set to the acceptable value and return -1. + maxRateInBytesPer30Ms = STREAM_SIZE_MAX; + status = -1; + } + } + instISAC->maxRateBytesPer30Ms = maxRateInBytesPer30Ms; + UpdatePayloadSizeLimit(instISAC); + return status; +} + + +/**************************************************************************** + * WebRtcIsac_GetRedPayload(...) + * + * Populates "encoded" with the redundant payload of the recently encoded + * frame. This function has to be called once that WebRtcIsac_Encode(...) + * returns a positive value. Regardless of the frame-size this function will + * be called only once after encoding is completed. The bit-stream is + * targeted for 16000 bit/sec. + * + * Input: + * - ISAC_main_inst : iSAC struct + * + * Output: + * - encoded : the encoded data vector + * + * + * Return value : >0 - Length (in bytes) of coded data + * : -1 - Error + * + * + */ +WebRtc_Word16 WebRtcIsac_GetRedPayload( + ISACStruct* ISAC_main_inst, + WebRtc_Word16* encoded) +{ + ISACMainStruct* instISAC; + Bitstr iSACBitStreamInst; + WebRtc_Word16 streamLenLB; + WebRtc_Word16 streamLenUB; + WebRtc_Word16 streamLen; + WebRtc_Word16 totalLenUB; + WebRtc_UWord8* ptrEncodedUW8 = (WebRtc_UWord8*)encoded; +#ifndef WEBRTC_BIG_ENDIAN + int k; +#endif + + /* typecast pointer to real structure */ + instISAC = (ISACMainStruct*)ISAC_main_inst; + + + if((instISAC->initFlag & BIT_MASK_ENC_INIT) != + BIT_MASK_ENC_INIT) + { + instISAC->errorCode = ISAC_ENCODER_NOT_INITIATED; + } + + + iSACBitStreamInst.W_upper = 0xFFFFFFFF; + iSACBitStreamInst.streamval = 0; + iSACBitStreamInst.stream_index = 0; + + + streamLenLB = WebRtcIsac_EncodeStoredDataLb( + &instISAC->instLB.ISACencLB_obj.SaveEnc_obj, + &iSACBitStreamInst, + instISAC->instLB.ISACencLB_obj.lastBWIdx, + RCU_TRANSCODING_SCALE); + + if(streamLenLB < 0) + { + return -1; + } + + /* convert from bytes to WebRtc_Word16 */ + memcpy(ptrEncodedUW8, iSACBitStreamInst.stream, streamLenLB); + + streamLen = streamLenLB; + + if(instISAC->bandwidthKHz == isac8kHz) + { + return streamLenLB; + } + + streamLenUB = WebRtcIsac_GetRedPayloadUb( + &instISAC->instUB.ISACencUB_obj.SaveEnc_obj, + &iSACBitStreamInst, instISAC->bandwidthKHz); + + if(streamLenUB < 0) + { + // an error has happened but this is not the error due to a + // bit-stream larger than the limit + return -1; + } + + // We have one byte to write the total length of the upper band + // the length include the bitstream length, check-sum and the + // single byte where the length is written to. This is according to + // iSAC wideband and how the "garbage" is dealt. + totalLenUB = streamLenUB + 1 + LEN_CHECK_SUM_WORD8; + if(totalLenUB > 255) + { + streamLenUB = 0; + } + + // Generate CRC if required. + if((instISAC->bandwidthKHz != isac8kHz) && + (streamLenUB > 0)) + { + WebRtc_UWord32 crc; + streamLen += totalLenUB; + ptrEncodedUW8[streamLenLB] = (WebRtc_UWord8)totalLenUB; + memcpy(&ptrEncodedUW8[streamLenLB+1], iSACBitStreamInst.stream, streamLenUB); + + WebRtcIsac_GetCrc((WebRtc_Word16*)(&(ptrEncodedUW8[streamLenLB + 1])), + streamLenUB, &crc); +#ifndef WEBRTC_BIG_ENDIAN + for(k = 0; k < LEN_CHECK_SUM_WORD8; k++) + { + ptrEncodedUW8[streamLen - LEN_CHECK_SUM_WORD8 + k] = + (WebRtc_UWord8)((crc >> (24 - k * 8)) & 0xFF); + } +#else + memcpy(&ptrEncodedUW8[streamLenLB + streamLenUB + 1], &crc, + LEN_CHECK_SUM_WORD8); +#endif + } + + + return streamLen; +} + + +/**************************************************************************** + * WebRtcIsac_version(...) + * + * This function returns the version number. + * + * Output: + * - version : Pointer to character string + * + */ +void WebRtcIsac_version(char *version) +{ + strcpy(version, "4.3.0"); +} + + +/****************************************************************************** + * WebRtcIsac_SetEncSampRate() + * Set the sampling rate of the encoder. Initialization of the encoder WILL + * NOT overwrite the sampling rate of the encoder. The default value is 16 kHz + * which is set when the instance is created. The encoding-mode and the + * bottleneck remain unchanged by this call, however, the maximum rate and + * maximum payload-size will reset to their default value. + * + * Input: + * - ISAC_main_inst : iSAC instance + * - sampRate : enumerator specifying the sampling rate. + * + * Return value : 0 if successful + * -1 if failed. + */ +WebRtc_Word16 WebRtcIsac_SetEncSampRate( + ISACStruct* ISAC_main_inst, + enum IsacSamplingRate sampRate) +{ + ISACMainStruct* instISAC; + + instISAC = (ISACMainStruct*)ISAC_main_inst; + + if((sampRate != kIsacWideband) && + (sampRate != kIsacSuperWideband)) + { + // Sampling Frequency is not supported + instISAC->errorCode = ISAC_UNSUPPORTED_SAMPLING_FREQUENCY; + return -1; + } + else if((instISAC->initFlag & BIT_MASK_ENC_INIT) != + BIT_MASK_ENC_INIT) + { + if(sampRate == kIsacWideband) + { + instISAC->bandwidthKHz = isac8kHz; + } + else + { + instISAC->bandwidthKHz = isac16kHz; + } + instISAC->encoderSamplingRateKHz = sampRate; + return 0; + } + else + { + ISACUBStruct* instUB = &(instISAC->instUB); + ISACLBStruct* instLB = &(instISAC->instLB); + double bottleneckLB; + double bottleneckUB; + WebRtc_Word32 bottleneck = instISAC->bottleneck; + WebRtc_Word16 codingMode = instISAC->codingMode; + WebRtc_Word16 frameSizeMs = instLB->ISACencLB_obj.new_framelength / (FS / 1000); + + if((sampRate == kIsacWideband) && + (instISAC->encoderSamplingRateKHz == kIsacSuperWideband)) + { + // changing from super-wideband to wideband. + // we don't need to re-initialize the encoder of the + // lower-band. + instISAC->bandwidthKHz = isac8kHz; + if(codingMode == 1) + { + ControlLb(instLB, + (bottleneck > 32000)? 32000:bottleneck, FRAMESIZE); + } + instISAC->maxPayloadSizeBytes = STREAM_SIZE_MAX_60; + instISAC->maxRateBytesPer30Ms = STREAM_SIZE_MAX_30; + } + else if((sampRate == kIsacSuperWideband) && + (instISAC->encoderSamplingRateKHz == kIsacWideband)) + { + if(codingMode == 1) + { + WebRtcIsac_RateAllocation(bottleneck, &bottleneckLB, &bottleneckUB, + &(instISAC->bandwidthKHz)); + } + + instISAC->bandwidthKHz = isac16kHz; + instISAC->maxPayloadSizeBytes = STREAM_SIZE_MAX; + instISAC->maxRateBytesPer30Ms = STREAM_SIZE_MAX; + + EncoderInitLb(instLB, codingMode, sampRate); + EncoderInitUb(instUB, instISAC->bandwidthKHz); + + memset(instISAC->analysisFBState1, 0, + FB_STATE_SIZE_WORD32 * sizeof(WebRtc_Word32)); + memset(instISAC->analysisFBState2, 0, + FB_STATE_SIZE_WORD32 * sizeof(WebRtc_Word32)); + + if(codingMode == 1) + { + instISAC->bottleneck = bottleneck; + ControlLb(instLB, bottleneckLB, + (instISAC->bandwidthKHz == isac8kHz)? frameSizeMs:FRAMESIZE); + if(instISAC->bandwidthKHz > isac8kHz) + { + ControlUb(instUB, bottleneckUB); + } + } + else + { + instLB->ISACencLB_obj.enforceFrameSize = 0; + instLB->ISACencLB_obj.new_framelength = FRAMESAMPLES; + } + } + instISAC->encoderSamplingRateKHz = sampRate; + return 0; + } +} + + +/****************************************************************************** + * WebRtcIsac_SetDecSampRate() + * Set the sampling rate of the decoder. Initialization of the decoder WILL + * NOT overwrite the sampling rate of the encoder. The default value is 16 kHz + * which is set when the instance is created. + * + * Input: + * - ISAC_main_inst : iSAC instance + * - sampRate : enumerator specifying the sampling rate. + * + * Return value : 0 if successful + * -1 if failed. + */ +WebRtc_Word16 WebRtcIsac_SetDecSampRate( + ISACStruct* ISAC_main_inst, + enum IsacSamplingRate sampRate) +{ + ISACMainStruct* instISAC; + + instISAC = (ISACMainStruct*)ISAC_main_inst; + + if((sampRate != kIsacWideband) && + (sampRate != kIsacSuperWideband)) + { + // Sampling Frequency is not supported + instISAC->errorCode = ISAC_UNSUPPORTED_SAMPLING_FREQUENCY; + return -1; + } + else + { + if((instISAC->decoderSamplingRateKHz == kIsacWideband) && + (sampRate == kIsacSuperWideband)) + { + // switching from wideband to super-wideband at the decoder + // we need to reset the filter-bank and initialize + // upper-band decoder. + memset(instISAC->synthesisFBState1, 0, + FB_STATE_SIZE_WORD32 * sizeof(WebRtc_Word32)); + memset(instISAC->synthesisFBState2, 0, + FB_STATE_SIZE_WORD32 * sizeof(WebRtc_Word32)); + + if(DecoderInitUb(&(instISAC->instUB)) < 0) + { + return -1; + } + } + instISAC->decoderSamplingRateKHz = sampRate; + return 0; + } +} + + +/****************************************************************************** + * WebRtcIsac_EncSampRate() + * + * Input: + * - ISAC_main_inst : iSAC instance + * + * Return value : enumerator representing sampling frequency + * associated with the encoder, the input audio + * is expected to be sampled at this rate. + * + */ +enum IsacSamplingRate WebRtcIsac_EncSampRate( + ISACStruct* ISAC_main_inst) +{ + ISACMainStruct* instISAC; + + instISAC = (ISACMainStruct*)ISAC_main_inst; + + return instISAC->encoderSamplingRateKHz; +} + + +/****************************************************************************** + * WebRtcIsac_DecSampRate() + * Return the sampling rate of the decoded audio. + * + * Input: + * - ISAC_main_inst : iSAC instance + * + * Return value : enumerator representing sampling frequency + * associated with the decoder, i.e. the + * sampling rate of the decoded audio. + * + */ +enum IsacSamplingRate WebRtcIsac_DecSampRate( + ISACStruct* ISAC_main_inst) +{ + ISACMainStruct* instISAC; + + instISAC = (ISACMainStruct*)ISAC_main_inst; + + return instISAC->decoderSamplingRateKHz; +} diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/isac.gypi.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/isac.gypi.svn-base new file mode 100644 index 0000000000..d30be551bd --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/isac.gypi.svn-base @@ -0,0 +1,91 @@ +# Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. +# +# Use of this source code is governed by a BSD-style license +# that can be found in the LICENSE file in the root of the source +# tree. An additional intellectual property rights grant can be found +# in the file PATENTS. All contributing project authors may +# be found in the AUTHORS file in the root of the source tree. + +{ + 'targets': [ + { + 'target_name': 'iSAC', + 'type': '<(library)', + 'dependencies': [ + '<(webrtc_root)/common_audio/common_audio.gyp:signal_processing', + ], + 'include_dirs': [ + '../interface', + ], + 'direct_dependent_settings': { + 'include_dirs': [ + '../interface', + ], + }, + 'sources': [ + '../interface/isac.h', + 'arith_routines.c', + 'arith_routines_hist.c', + 'arith_routines_logist.c', + 'bandwidth_estimator.c', + 'crc.c', + 'decode.c', + 'decode_bwe.c', + 'encode.c', + 'encode_lpc_swb.c', + 'entropy_coding.c', + 'fft.c', + 'filter_functions.c', + 'filterbank_tables.c', + 'intialize.c', + 'isac.c', + 'filterbanks.c', + 'pitch_lag_tables.c', + 'lattice.c', + 'lpc_gain_swb_tables.c', + 'lpc_analysis.c', + 'lpc_shape_swb12_tables.c', + 'lpc_shape_swb16_tables.c', + 'lpc_tables.c', + 'pitch_estimator.c', + 'pitch_filter.c', + 'pitch_gain_tables.c', + 'spectrum_ar_model_tables.c', + 'transform.c', + 'arith_routines.h', + 'bandwidth_estimator.h', + 'codec.h', + 'crc.h', + 'encode_lpc_swb.h', + 'entropy_coding.h', + 'fft.h', + 'filterbank_tables.h', + 'lpc_gain_swb_tables.h', + 'lpc_analysis.h', + 'lpc_shape_swb12_tables.h', + 'lpc_shape_swb16_tables.h', + 'lpc_tables.h', + 'pitch_estimator.h', + 'pitch_gain_tables.h', + 'pitch_lag_tables.h', + 'settings.h', + 'spectrum_ar_model_tables.h', + 'structs.h', + 'os_specific_inline.h', + ], + 'conditions': [ + ['OS!="win"', { + 'defines': [ + 'WEBRTC_LINUX', + ], + }], + ], + }, + ], +} + +# Local Variables: +# tab-width:2 +# indent-tabs-mode:nil +# End: +# vim: set expandtab tabstop=2 shiftwidth=2: diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/lattice.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/lattice.c.svn-base new file mode 100644 index 0000000000..a46135a3f7 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/lattice.c.svn-base @@ -0,0 +1,217 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * lattice.c + * + * contains the normalized lattice filter routines (MA and AR) for iSAC codec + * + */ +#include "settings.h" +#include "codec.h" + +#include +#include +#ifdef WEBRTC_ANDROID +#include +#endif + +/* filter the signal using normalized lattice filter */ +/* MA filter */ +void WebRtcIsac_NormLatticeFilterMa(int orderCoef, + float *stateF, + float *stateG, + float *lat_in, + double *filtcoeflo, + double *lat_out) +{ + int n,k,i,u,temp1; + int ord_1 = orderCoef+1; + float sth[MAX_AR_MODEL_ORDER]; + float cth[MAX_AR_MODEL_ORDER]; + float inv_cth[MAX_AR_MODEL_ORDER]; + double a[MAX_AR_MODEL_ORDER+1]; + float f[MAX_AR_MODEL_ORDER+1][HALF_SUBFRAMELEN], g[MAX_AR_MODEL_ORDER+1][HALF_SUBFRAMELEN]; + float gain1; + + for (u=0;u=0;i--) //get the state of f&g for the first input, for all orders + { + ARf[i][0] = cth[i]*ARf[i+1][0] - sth[i]*stateG[i]; + ARg[i+1][0] = sth[i]*ARf[i+1][0] + cth[i]* stateG[i]; + } + ARg[0][0] = ARf[0][0]; + + for(n=0;n<(HALF_SUBFRAMELEN-1);n++) + { + for(k=orderCoef-1;k>=0;k--) + { + ARf[k][n+1] = cth[k]*ARf[k+1][n+1] - sth[k]*ARg[k][n]; + ARg[k+1][n+1] = sth[k]*ARf[k+1][n+1] + cth[k]* ARg[k][n]; + } + ARg[0][n+1] = ARf[0][n+1]; + } + + memcpy(lat_out+u * HALF_SUBFRAMELEN, &(ARf[0][0]), sizeof(float) * HALF_SUBFRAMELEN); + + /* cannot use memcpy in the following */ + for (i=0;i0; m--) + { + tmp_inv = 1.0f / cth2; + for (k=1; k<=m; k++) + { + tmp[k] = ((float)a[k] - sth[m] * (float)a[m-k+1]) * tmp_inv; + } + + for (k=1; k +#include + +#define LEVINSON_EPS 1.0e-10 + + +/* window */ +/* Matlab generation code: + * t = (1:256)/257; r = 1-(1-t).^.45; w = sin(r*pi).^3; w = w/sum(w); plot((1:256)/8, w); grid; + * for k=1:16, fprintf(1, '%.8f, ', w(k*16 + (-15:0))); fprintf(1, '\n'); end + */ +static const double kLpcCorrWindow[WINLEN] = { + 0.00000000, 0.00000001, 0.00000004, 0.00000010, 0.00000020, + 0.00000035, 0.00000055, 0.00000083, 0.00000118, 0.00000163, + 0.00000218, 0.00000283, 0.00000361, 0.00000453, 0.00000558, 0.00000679, + 0.00000817, 0.00000973, 0.00001147, 0.00001342, 0.00001558, + 0.00001796, 0.00002058, 0.00002344, 0.00002657, 0.00002997, + 0.00003365, 0.00003762, 0.00004190, 0.00004651, 0.00005144, 0.00005673, + 0.00006236, 0.00006837, 0.00007476, 0.00008155, 0.00008875, + 0.00009636, 0.00010441, 0.00011290, 0.00012186, 0.00013128, + 0.00014119, 0.00015160, 0.00016252, 0.00017396, 0.00018594, 0.00019846, + 0.00021155, 0.00022521, 0.00023946, 0.00025432, 0.00026978, + 0.00028587, 0.00030260, 0.00031998, 0.00033802, 0.00035674, + 0.00037615, 0.00039626, 0.00041708, 0.00043863, 0.00046092, 0.00048396, + 0.00050775, 0.00053233, 0.00055768, 0.00058384, 0.00061080, + 0.00063858, 0.00066720, 0.00069665, 0.00072696, 0.00075813, + 0.00079017, 0.00082310, 0.00085692, 0.00089164, 0.00092728, 0.00096384, + 0.00100133, 0.00103976, 0.00107914, 0.00111947, 0.00116077, + 0.00120304, 0.00124630, 0.00129053, 0.00133577, 0.00138200, + 0.00142924, 0.00147749, 0.00152676, 0.00157705, 0.00162836, 0.00168070, + 0.00173408, 0.00178850, 0.00184395, 0.00190045, 0.00195799, + 0.00201658, 0.00207621, 0.00213688, 0.00219860, 0.00226137, + 0.00232518, 0.00239003, 0.00245591, 0.00252284, 0.00259079, 0.00265977, + 0.00272977, 0.00280078, 0.00287280, 0.00294582, 0.00301984, + 0.00309484, 0.00317081, 0.00324774, 0.00332563, 0.00340446, + 0.00348421, 0.00356488, 0.00364644, 0.00372889, 0.00381220, 0.00389636, + 0.00398135, 0.00406715, 0.00415374, 0.00424109, 0.00432920, + 0.00441802, 0.00450754, 0.00459773, 0.00468857, 0.00478001, + 0.00487205, 0.00496464, 0.00505775, 0.00515136, 0.00524542, 0.00533990, + 0.00543476, 0.00552997, 0.00562548, 0.00572125, 0.00581725, + 0.00591342, 0.00600973, 0.00610612, 0.00620254, 0.00629895, + 0.00639530, 0.00649153, 0.00658758, 0.00668341, 0.00677894, 0.00687413, + 0.00696891, 0.00706322, 0.00715699, 0.00725016, 0.00734266, + 0.00743441, 0.00752535, 0.00761540, 0.00770449, 0.00779254, + 0.00787947, 0.00796519, 0.00804963, 0.00813270, 0.00821431, 0.00829437, + 0.00837280, 0.00844949, 0.00852436, 0.00859730, 0.00866822, + 0.00873701, 0.00880358, 0.00886781, 0.00892960, 0.00898884, + 0.00904542, 0.00909923, 0.00915014, 0.00919805, 0.00924283, 0.00928436, + 0.00932252, 0.00935718, 0.00938821, 0.00941550, 0.00943890, + 0.00945828, 0.00947351, 0.00948446, 0.00949098, 0.00949294, + 0.00949020, 0.00948262, 0.00947005, 0.00945235, 0.00942938, 0.00940099, + 0.00936704, 0.00932738, 0.00928186, 0.00923034, 0.00917268, + 0.00910872, 0.00903832, 0.00896134, 0.00887763, 0.00878706, + 0.00868949, 0.00858478, 0.00847280, 0.00835343, 0.00822653, 0.00809199, + 0.00794970, 0.00779956, 0.00764145, 0.00747530, 0.00730103, + 0.00711857, 0.00692787, 0.00672888, 0.00652158, 0.00630597, + 0.00608208, 0.00584994, 0.00560962, 0.00536124, 0.00510493, 0.00484089, + 0.00456935, 0.00429062, 0.00400505, 0.00371310, 0.00341532, + 0.00311238, 0.00280511, 0.00249452, 0.00218184, 0.00186864, + 0.00155690, 0.00124918, 0.00094895, 0.00066112, 0.00039320, 0.00015881 +}; + +double WebRtcIsac_LevDurb(double *a, double *k, double *r, int order) +{ + + double sum, alpha; + int m, m_h, i; + alpha = 0; //warning -DH + a[0] = 1.0; + if (r[0] < LEVINSON_EPS) { /* if r[0] <= 0, set LPC coeff. to zero */ + for (i = 0; i < order; i++) { + k[i] = 0; + a[i+1] = 0; + } + } else { + a[1] = k[0] = -r[1]/r[0]; + alpha = r[0] + r[1] * k[0]; + for (m = 1; m < order; m++){ + sum = r[m + 1]; + for (i = 0; i < m; i++){ + sum += a[i+1] * r[m - i]; + } + k[m] = -sum / alpha; + alpha += k[m] * sum; + m_h = (m + 1) >> 1; + for (i = 0; i < m_h; i++){ + sum = a[i+1] + k[m] * a[m - i]; + a[m - i] += k[m] * a[i+1]; + a[i+1] = sum; + } + a[m+1] = k[m]; + } + } + return alpha; +} + + +//was static before, but didn't work with MEX file +void WebRtcIsac_GetVars(const double *input, const WebRtc_Word16 *pitchGains_Q12, + double *oldEnergy, double *varscale) +{ + double nrg[4], chng, pg; + int k; + + double pitchGains[4]={0,0,0,0};; + + /* Calculate energies of first and second frame halfs */ + nrg[0] = 0.0001; + for (k = QLOOKAHEAD/2; k < (FRAMESAMPLES_QUARTER + QLOOKAHEAD) / 2; k++) { + nrg[0] += input[k]*input[k]; + } + nrg[1] = 0.0001; + for ( ; k < (FRAMESAMPLES_HALF + QLOOKAHEAD) / 2; k++) { + nrg[1] += input[k]*input[k]; + } + nrg[2] = 0.0001; + for ( ; k < (FRAMESAMPLES*3/4 + QLOOKAHEAD) / 2; k++) { + nrg[2] += input[k]*input[k]; + } + nrg[3] = 0.0001; + for ( ; k < (FRAMESAMPLES + QLOOKAHEAD) / 2; k++) { + nrg[3] += input[k]*input[k]; + } + + /* Calculate average level change */ + chng = 0.25 * (fabs(10.0 * log10(nrg[3] / nrg[2])) + + fabs(10.0 * log10(nrg[2] / nrg[1])) + + fabs(10.0 * log10(nrg[1] / nrg[0])) + + fabs(10.0 * log10(nrg[0] / *oldEnergy))); + + + /* Find average pitch gain */ + pg = 0.0; + for (k=0; k<4; k++) + { + pitchGains[k] = ((float)pitchGains_Q12[k])/4096; + pg += pitchGains[k]; + } + pg *= 0.25; + + /* If pitch gain is low and energy constant - increase noise level*/ + /* Matlab code: + pg = 0:.01:.45; plot(pg, 0.0 + 1.0 * exp( -1.0 * exp(-200.0 * pg.*pg.*pg) / (1.0 + 0.4 * 0) )) + */ + *varscale = 0.0 + 1.0 * exp( -1.4 * exp(-200.0 * pg*pg*pg) / (1.0 + 0.4 * chng) ); + + *oldEnergy = nrg[3]; +} + +void +WebRtcIsac_GetVarsUB( + const double* input, + double* oldEnergy, + double* varscale) +{ + double nrg[4], chng; + int k; + + /* Calculate energies of first and second frame halfs */ + nrg[0] = 0.0001; + for (k = 0; k < (FRAMESAMPLES_QUARTER) / 2; k++) { + nrg[0] += input[k]*input[k]; + } + nrg[1] = 0.0001; + for ( ; k < (FRAMESAMPLES_HALF) / 2; k++) { + nrg[1] += input[k]*input[k]; + } + nrg[2] = 0.0001; + for ( ; k < (FRAMESAMPLES*3/4) / 2; k++) { + nrg[2] += input[k]*input[k]; + } + nrg[3] = 0.0001; + for ( ; k < (FRAMESAMPLES) / 2; k++) { + nrg[3] += input[k]*input[k]; + } + + /* Calculate average level change */ + chng = 0.25 * (fabs(10.0 * log10(nrg[3] / nrg[2])) + + fabs(10.0 * log10(nrg[2] / nrg[1])) + + fabs(10.0 * log10(nrg[1] / nrg[0])) + + fabs(10.0 * log10(nrg[0] / *oldEnergy))); + + + /* If pitch gain is low and energy constant - increase noise level*/ + /* Matlab code: + pg = 0:.01:.45; plot(pg, 0.0 + 1.0 * exp( -1.0 * exp(-200.0 * pg.*pg.*pg) / (1.0 + 0.4 * 0) )) + */ + *varscale = exp( -1.4 / (1.0 + 0.4 * chng) ); + + *oldEnergy = nrg[3]; +} + +void WebRtcIsac_GetLpcCoefLb(double *inLo, double *inHi, MaskFiltstr *maskdata, + double signal_noise_ratio, const WebRtc_Word16 *pitchGains_Q12, + double *lo_coeff, double *hi_coeff) +{ + int k, n, j, pos1, pos2; + double varscale; + + double DataLo[WINLEN], DataHi[WINLEN]; + double corrlo[ORDERLO+2], corrlo2[ORDERLO+1]; + double corrhi[ORDERHI+1]; + double k_veclo[ORDERLO], k_vechi[ORDERHI]; + + double a_LO[ORDERLO+1], a_HI[ORDERHI+1]; + double tmp, res_nrg; + + double FwdA, FwdB; + + /* hearing threshold level in dB; higher value gives more noise */ + const double HearThresOffset = -28.0; + + /* bandwdith expansion factors for low- and high band */ + const double gammaLo = 0.9; + const double gammaHi = 0.8; + + /* less-noise-at-low-frequencies factor */ + double aa; + + + /* convert from dB to signal level */ + const double H_T_H = pow(10.0, 0.05 * HearThresOffset); + double S_N_R = pow(10.0, 0.05 * signal_noise_ratio) / 3.46; /* divide by sqrt(12) */ + + /* change quallevel depending on pitch gains and level fluctuations */ + WebRtcIsac_GetVars(inLo, pitchGains_Q12, &(maskdata->OldEnergy), &varscale); + + /* less-noise-at-low-frequencies factor */ + aa = 0.35 * (0.5 + 0.5 * varscale); + + /* replace data in buffer by new look-ahead data */ + for (pos1 = 0; pos1 < QLOOKAHEAD; pos1++) + maskdata->DataBufferLo[pos1 + WINLEN - QLOOKAHEAD] = inLo[pos1]; + + for (k = 0; k < SUBFRAMES; k++) { + + /* Update input buffer and multiply signal with window */ + for (pos1 = 0; pos1 < WINLEN - UPDATE/2; pos1++) { + maskdata->DataBufferLo[pos1] = maskdata->DataBufferLo[pos1 + UPDATE/2]; + maskdata->DataBufferHi[pos1] = maskdata->DataBufferHi[pos1 + UPDATE/2]; + DataLo[pos1] = maskdata->DataBufferLo[pos1] * kLpcCorrWindow[pos1]; + DataHi[pos1] = maskdata->DataBufferHi[pos1] * kLpcCorrWindow[pos1]; + } + pos2 = k * UPDATE/2; + for (n = 0; n < UPDATE/2; n++, pos1++) { + maskdata->DataBufferLo[pos1] = inLo[QLOOKAHEAD + pos2]; + maskdata->DataBufferHi[pos1] = inHi[pos2++]; + DataLo[pos1] = maskdata->DataBufferLo[pos1] * kLpcCorrWindow[pos1]; + DataHi[pos1] = maskdata->DataBufferHi[pos1] * kLpcCorrWindow[pos1]; + } + + /* Get correlation coefficients */ + WebRtcIsac_AutoCorr(corrlo, DataLo, WINLEN, ORDERLO+1); /* computing autocorrelation */ + WebRtcIsac_AutoCorr(corrhi, DataHi, WINLEN, ORDERHI); + + + /* less noise for lower frequencies, by filtering/scaling autocorrelation sequences */ + corrlo2[0] = (1.0+aa*aa) * corrlo[0] - 2.0*aa * corrlo[1]; + tmp = (1.0 + aa*aa); + for (n = 1; n <= ORDERLO; n++) { + corrlo2[n] = tmp * corrlo[n] - aa * (corrlo[n-1] + corrlo[n+1]); + } + tmp = (1.0+aa) * (1.0+aa); + for (n = 0; n <= ORDERHI; n++) { + corrhi[n] = tmp * corrhi[n]; + } + + /* add white noise floor */ + corrlo2[0] += 1e-6; + corrhi[0] += 1e-6; + + + FwdA = 0.01; + FwdB = 0.01; + + /* recursive filtering of correlation over subframes */ + for (n = 0; n <= ORDERLO; n++) { + maskdata->CorrBufLo[n] = FwdA * maskdata->CorrBufLo[n] + corrlo2[n]; + corrlo2[n] = ((1.0-FwdA)*FwdB) * maskdata->CorrBufLo[n] + (1.0-FwdB) * corrlo2[n]; + } + for (n = 0; n <= ORDERHI; n++) { + maskdata->CorrBufHi[n] = FwdA * maskdata->CorrBufHi[n] + corrhi[n]; + corrhi[n] = ((1.0-FwdA)*FwdB) * maskdata->CorrBufHi[n] + (1.0-FwdB) * corrhi[n]; + } + + /* compute prediction coefficients */ + WebRtcIsac_LevDurb(a_LO, k_veclo, corrlo2, ORDERLO); + WebRtcIsac_LevDurb(a_HI, k_vechi, corrhi, ORDERHI); + + /* bandwidth expansion */ + tmp = gammaLo; + for (n = 1; n <= ORDERLO; n++) { + a_LO[n] *= tmp; + tmp *= gammaLo; + } + + /* residual energy */ + res_nrg = 0.0; + for (j = 0; j <= ORDERLO; j++) { + for (n = 0; n <= j; n++) { + res_nrg += a_LO[j] * corrlo2[j-n] * a_LO[n]; + } + for (n = j+1; n <= ORDERLO; n++) { + res_nrg += a_LO[j] * corrlo2[n-j] * a_LO[n]; + } + } + + /* add hearing threshold and compute the gain */ + *lo_coeff++ = S_N_R / (sqrt(res_nrg) / varscale + H_T_H); + + /* copy coefficients to output array */ + for (n = 1; n <= ORDERLO; n++) { + *lo_coeff++ = a_LO[n]; + } + + + /* bandwidth expansion */ + tmp = gammaHi; + for (n = 1; n <= ORDERHI; n++) { + a_HI[n] *= tmp; + tmp *= gammaHi; + } + + /* residual energy */ + res_nrg = 0.0; + for (j = 0; j <= ORDERHI; j++) { + for (n = 0; n <= j; n++) { + res_nrg += a_HI[j] * corrhi[j-n] * a_HI[n]; + } + for (n = j+1; n <= ORDERHI; n++) { + res_nrg += a_HI[j] * corrhi[n-j] * a_HI[n]; + } + } + + /* add hearing threshold and compute of the gain */ + *hi_coeff++ = S_N_R / (sqrt(res_nrg) / varscale + H_T_H); + + /* copy coefficients to output array */ + for (n = 1; n <= ORDERHI; n++) { + *hi_coeff++ = a_HI[n]; + } + } +} + + + +/****************************************************************************** + * WebRtcIsac_GetLpcCoefUb() + * + * Compute LP coefficients and correlation coefficients. At 12 kHz LP + * coefficients of the first and the last sub-frame is computed. At 16 kHz + * LP coefficients of 4th, 8th and 12th sub-frames are computed. We always + * compute correlation coefficients of all sub-frames. + * + * Inputs: + * -inSignal : Input signal + * -maskdata : a structure keeping signal from previous frame. + * -bandwidth : specifies if the codec is in 0-16 kHz mode or + * 0-12 kHz mode. + * + * Outputs: + * -lpCoeff : pointer to a buffer where A-polynomials are + * written to (first coeff is 1 and it is not + * written) + * -corrMat : a matrix where correlation coefficients of each + * sub-frame are written to one row. + * -varscale : a scale used to compute LPC gains. + */ +void +WebRtcIsac_GetLpcCoefUb( + double* inSignal, + MaskFiltstr* maskdata, + double* lpCoeff, + double corrMat[][UB_LPC_ORDER + 1], + double* varscale, + WebRtc_Word16 bandwidth) +{ + int frameCntr, activeFrameCntr, n, pos1, pos2; + WebRtc_Word16 criterion1; + WebRtc_Word16 criterion2; + WebRtc_Word16 numSubFrames = SUBFRAMES * (1 + (bandwidth == isac16kHz)); + double data[WINLEN]; + double corrSubFrame[UB_LPC_ORDER+2]; + double reflecCoeff[UB_LPC_ORDER]; + + double aPolynom[UB_LPC_ORDER+1]; + double tmp; + + /* bandwdith expansion factors */ + const double gamma = 0.9; + + /* change quallevel depending on pitch gains and level fluctuations */ + WebRtcIsac_GetVarsUB(inSignal, &(maskdata->OldEnergy), varscale); + + /* replace data in buffer by new look-ahead data */ + for(frameCntr = 0, activeFrameCntr = 0; frameCntr < numSubFrames; + frameCntr++) + { + if(frameCntr == SUBFRAMES) + { + // we are in 16 kHz + varscale++; + WebRtcIsac_GetVarsUB(&inSignal[FRAMESAMPLES_HALF], + &(maskdata->OldEnergy), varscale); + } + /* Update input buffer and multiply signal with window */ + for(pos1 = 0; pos1 < WINLEN - UPDATE/2; pos1++) + { + maskdata->DataBufferLo[pos1] = maskdata->DataBufferLo[pos1 + + UPDATE/2]; + data[pos1] = maskdata->DataBufferLo[pos1] * kLpcCorrWindow[pos1]; + } + pos2 = frameCntr * UPDATE/2; + for(n = 0; n < UPDATE/2; n++, pos1++, pos2++) + { + maskdata->DataBufferLo[pos1] = inSignal[pos2]; + data[pos1] = maskdata->DataBufferLo[pos1] * kLpcCorrWindow[pos1]; + } + + /* Get correlation coefficients */ + /* computing autocorrelation */ + WebRtcIsac_AutoCorr(corrSubFrame, data, WINLEN, UB_LPC_ORDER+1); + memcpy(corrMat[frameCntr], corrSubFrame, + (UB_LPC_ORDER+1)*sizeof(double)); + + criterion1 = ((frameCntr == 0) || (frameCntr == (SUBFRAMES - 1))) && + (bandwidth == isac12kHz); + criterion2 = (((frameCntr+1) % 4) == 0) && + (bandwidth == isac16kHz); + if(criterion1 || criterion2) + { + /* add noise */ + corrSubFrame[0] += 1e-6; + /* compute prediction coefficients */ + WebRtcIsac_LevDurb(aPolynom, reflecCoeff, corrSubFrame, + UB_LPC_ORDER); + + /* bandwidth expansion */ + tmp = gamma; + for (n = 1; n <= UB_LPC_ORDER; n++) + { + *lpCoeff++ = aPolynom[n] * tmp; + tmp *= gamma; + } + activeFrameCntr++; + } + } +} + + + +/****************************************************************************** + * WebRtcIsac_GetLpcGain() + * + * Compute the LPC gains for each sub-frame, given the LPC of each sub-frame + * and the corresponding correlation coefficients. + * + * Inputs: + * -signal_noise_ratio : the desired SNR in dB. + * -numVecs : number of sub-frames + * -corrMat : a matrix of correlation coefficients where + * each row is a set of correlation coefficients of + * one sub-frame. + * -varscale : a scale computed when WebRtcIsac_GetLpcCoefUb() + * is called. + * + * Outputs: + * -gain : pointer to a buffer where LP gains are written. + * + */ +void +WebRtcIsac_GetLpcGain( + double signal_noise_ratio, + const double* filtCoeffVecs, + int numVecs, + double* gain, + double corrMat[][UB_LPC_ORDER + 1], + const double* varscale) +{ + WebRtc_Word16 j, n; + WebRtc_Word16 subFrameCntr; + double aPolynom[ORDERLO + 1]; + double res_nrg; + + const double HearThresOffset = -28.0; + const double H_T_H = pow(10.0, 0.05 * HearThresOffset); + /* divide by sqrt(12) = 3.46 */ + const double S_N_R = pow(10.0, 0.05 * signal_noise_ratio) / 3.46; + + aPolynom[0] = 1; + for(subFrameCntr = 0; subFrameCntr < numVecs; subFrameCntr++) + { + if(subFrameCntr == SUBFRAMES) + { + // we are in second half of a SWB frame. use new varscale + varscale++; + } + memcpy(&aPolynom[1], &filtCoeffVecs[(subFrameCntr * (UB_LPC_ORDER + 1)) + + 1], sizeof(double) * UB_LPC_ORDER); + + /* residual energy */ + res_nrg = 0.0; + for(j = 0; j <= UB_LPC_ORDER; j++) + { + for(n = 0; n <= j; n++) + { + res_nrg += aPolynom[j] * corrMat[subFrameCntr][j-n] * + aPolynom[n]; + } + for(n = j+1; n <= UB_LPC_ORDER; n++) + { + res_nrg += aPolynom[j] * corrMat[subFrameCntr][n-j] * + aPolynom[n]; + } + } + + /* add hearing threshold and compute the gain */ + gain[subFrameCntr] = S_N_R / (sqrt(res_nrg) / *varscale + H_T_H); + } +} diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/lpc_analysis.h.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/lpc_analysis.h.svn-base new file mode 100644 index 0000000000..4eafeac7bc --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/lpc_analysis.h.svn-base @@ -0,0 +1,50 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * lpc_analysis.h + * + * LPC functions + * + */ + +#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_ANALYSIS_H_ +#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_ANALYSIS_H_ + +#include "settings.h" +#include "structs.h" + +double WebRtcIsac_LevDurb(double *a, double *k, double *r, int order); + +void WebRtcIsac_GetVars(const double *input, const WebRtc_Word16 *pitchGains_Q12, + double *oldEnergy, double *varscale); + +void WebRtcIsac_GetLpcCoefLb(double *inLo, double *inHi, MaskFiltstr *maskdata, + double signal_noise_ratio, const WebRtc_Word16 *pitchGains_Q12, + double *lo_coeff, double *hi_coeff); + + +void WebRtcIsac_GetLpcGain( + double signal_noise_ratio, + const double* filtCoeffVecs, + int numVecs, + double* gain, + double corrLo[][UB_LPC_ORDER + 1], + const double* varscale); + +void WebRtcIsac_GetLpcCoefUb( + double* inSignal, + MaskFiltstr* maskdata, + double* lpCoeff, + double corr[][UB_LPC_ORDER + 1], + double* varscale, + WebRtc_Word16 bandwidth); + +#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_ANALYIS_H_ */ diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/lpc_gain_swb_tables.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/lpc_gain_swb_tables.c.svn-base new file mode 100644 index 0000000000..25c69cbfef --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/lpc_gain_swb_tables.c.svn-base @@ -0,0 +1,137 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * SWB_KLT_Tables_LPCGain.c + * + * This file defines tables used for entropy coding of LPC Gain + * of upper-band. + * + */ + +#include "lpc_gain_swb_tables.h" +#include "settings.h" +#include "typedefs.h" + +const double WebRtcIsac_kQSizeLpcGain = 0.100000; + +const double WebRtcIsac_kMeanLpcGain = -3.3822; + +/* +* The smallest reconstruction points for quantiztion of +* LPC gains. +*/ +const double WebRtcIsac_kLeftRecPointLpcGain[SUBFRAMES] = +{ + -0.800000, -1.000000, -1.200000, -2.200000, -3.000000, -12.700000 +}; + +/* +* Number of reconstruction points of quantizers for LPC Gains. +*/ +const WebRtc_Word16 WebRtcIsac_kNumQCellLpcGain[SUBFRAMES] = +{ + 17, 20, 25, 45, 77, 170 +}; +/* +* Starting index for entropy decoder to search for the right interval, +* one entry per LAR coefficient +*/ +const WebRtc_UWord16 WebRtcIsac_kLpcGainEntropySearch[SUBFRAMES] = +{ + 8, 10, 12, 22, 38, 85 +}; + +/* +* The following 6 vectors define CDF of 6 decorrelated LPC +* gains. +*/ +const WebRtc_UWord16 WebRtcIsac_kLpcGainCdfVec0[18] = +{ + 0, 10, 27, 83, 234, 568, 1601, 4683, 16830, 57534, 63437, + 64767, 65229, 65408, 65483, 65514, 65527, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcGainCdfVec1[21] = +{ + 0, 15, 33, 84, 185, 385, 807, 1619, 3529, 7850, 19488, + 51365, 62437, 64548, 65088, 65304, 65409, 65484, 65507, 65522, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcGainCdfVec2[26] = +{ + 0, 15, 29, 54, 89, 145, 228, 380, 652, 1493, 4260, + 12359, 34133, 50749, 57224, 60814, 62927, 64078, 64742, 65103, 65311, 65418, + 65473, 65509, 65521, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcGainCdfVec3[46] = +{ + 0, 8, 12, 16, 26, 42, 56, 76, 111, 164, 247, + 366, 508, 693, 1000, 1442, 2155, 3188, 4854, 7387, 11249, 17617, + 30079, 46711, 56291, 60127, 62140, 63258, 63954, 64384, 64690, 64891, 65031, + 65139, 65227, 65293, 65351, 65399, 65438, 65467, 65492, 65504, 65510, 65518, + 65523, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcGainCdfVec4[78] = +{ + 0, 17, 29, 39, 51, 70, 104, 154, 234, 324, 443, + 590, 760, 971, 1202, 1494, 1845, 2274, 2797, 3366, 4088, 4905, + 5899, 7142, 8683, 10625, 12983, 16095, 20637, 28216, 38859, 47237, 51537, + 54150, 56066, 57583, 58756, 59685, 60458, 61103, 61659, 62144, 62550, 62886, + 63186, 63480, 63743, 63954, 64148, 64320, 64467, 64600, 64719, 64837, 64939, + 65014, 65098, 65160, 65211, 65250, 65290, 65325, 65344, 65366, 65391, 65410, + 65430, 65447, 65460, 65474, 65487, 65494, 65501, 65509, 65513, 65518, 65520, + 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcGainCdfVec5[171] = +{ + 0, 10, 12, 14, 16, 18, 23, 29, 35, 42, 51, + 58, 65, 72, 78, 87, 96, 103, 111, 122, 134, 150, + 167, 184, 202, 223, 244, 265, 289, 315, 346, 379, 414, + 450, 491, 532, 572, 613, 656, 700, 751, 802, 853, 905, + 957, 1021, 1098, 1174, 1250, 1331, 1413, 1490, 1565, 1647, 1730, + 1821, 1913, 2004, 2100, 2207, 2314, 2420, 2532, 2652, 2783, 2921, + 3056, 3189, 3327, 3468, 3640, 3817, 3993, 4171, 4362, 4554, 4751, + 4948, 5142, 5346, 5566, 5799, 6044, 6301, 6565, 6852, 7150, 7470, + 7797, 8143, 8492, 8835, 9181, 9547, 9919, 10315, 10718, 11136, 11566, + 12015, 12482, 12967, 13458, 13953, 14432, 14903, 15416, 15936, 16452, 16967, + 17492, 18024, 18600, 19173, 19736, 20311, 20911, 21490, 22041, 22597, 23157, + 23768, 24405, 25034, 25660, 26280, 26899, 27614, 28331, 29015, 29702, 30403, + 31107, 31817, 32566, 33381, 34224, 35099, 36112, 37222, 38375, 39549, 40801, + 42074, 43350, 44626, 45982, 47354, 48860, 50361, 51845, 53312, 54739, 56026, + 57116, 58104, 58996, 59842, 60658, 61488, 62324, 63057, 63769, 64285, 64779, + 65076, 65344, 65430, 65500, 65517, 65535 +}; + +/* +* An array of pointers to CDFs of decorrelated LPC Gains +*/ +const WebRtc_UWord16* WebRtcIsac_kLpcGainCdfMat[SUBFRAMES] = +{ + WebRtcIsac_kLpcGainCdfVec0, WebRtcIsac_kLpcGainCdfVec1, + WebRtcIsac_kLpcGainCdfVec2, WebRtcIsac_kLpcGainCdfVec3, + WebRtcIsac_kLpcGainCdfVec4, WebRtcIsac_kLpcGainCdfVec5 +}; + +/* +* A matrix to decorrellate LPC gains of subframes. +*/ +const double WebRtcIsac_kLpcGainDecorrMat[SUBFRAMES][SUBFRAMES] = +{ + {-0.150860, 0.327872, 0.367220, 0.504613, 0.559270, 0.409234}, + { 0.457128, -0.613591, -0.289283, -0.029734, 0.393760, 0.418240}, + {-0.626043, 0.136489, -0.439118, -0.448323, 0.135987, 0.420869}, + { 0.526617, 0.480187, 0.242552, -0.488754, -0.158713, 0.411331}, + {-0.302587, -0.494953, 0.588112, -0.063035, -0.404290, 0.387510}, + { 0.086378, 0.147714, -0.428875, 0.548300, -0.570121, 0.401391} +}; diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/lpc_gain_swb_tables.h.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/lpc_gain_swb_tables.h.svn-base new file mode 100644 index 0000000000..1eba97c8ba --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/lpc_gain_swb_tables.h.svn-base @@ -0,0 +1,49 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * SWB_KLT_Tables_LPCGain.h + * + * This file declares tables used for entropy coding of LPC Gain + * of upper-band. + * + */ + +#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_GAIN_SWB_TABLES_H_ +#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_GAIN_SWB_TABLES_H_ + +#include "settings.h" +#include "typedefs.h" + +extern const double WebRtcIsac_kQSizeLpcGain; + +extern const double WebRtcIsac_kLeftRecPointLpcGain[SUBFRAMES]; + +extern const WebRtc_Word16 WebRtcIsac_kNumQCellLpcGain[SUBFRAMES]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcGainEntropySearch[SUBFRAMES]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcGainCdfVec0[18]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcGainCdfVec1[21]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcGainCdfVec2[26]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcGainCdfVec3[46]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcGainCdfVec4[78]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcGainCdfVec5[171]; + +extern const WebRtc_UWord16* WebRtcIsac_kLpcGainCdfMat[SUBFRAMES]; + +extern const double WebRtcIsac_kLpcGainDecorrMat[SUBFRAMES][SUBFRAMES]; + +#endif // WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_GAIN_SWB_TABLES_H_ diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/lpc_shape_swb12_tables.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/lpc_shape_swb12_tables.c.svn-base new file mode 100644 index 0000000000..695d583277 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/lpc_shape_swb12_tables.c.svn-base @@ -0,0 +1,159 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * SWB_KLT_Tables.c + * + * This file defines tables used for entropy coding of LPC shape of + * upper-band signal if the bandwidth is 12 kHz. + * + */ + +#include "lpc_shape_swb12_tables.h" +#include "settings.h" +#include "typedefs.h" + +/* +* Mean value of LAR +*/ +const double WebRtcIsac_kMeanLarUb12[UB_LPC_ORDER] = +{ + 0.03748928306641, 0.09453441192543, -0.01112522344398, 0.03800237516842 +}; + +/* +* A rotation matrix to decorrelate intra-vector correlation, +* i.e. correlation among components of LAR vector. +*/ +const double WebRtcIsac_kIntraVecDecorrMatUb12[UB_LPC_ORDER][UB_LPC_ORDER] = +{ + {-0.00075365493856, -0.05809964887743, -0.23397966154116, 0.97050367376411}, + { 0.00625021257734, -0.17299965610679, 0.95977735920651, 0.22104179375008}, + { 0.20543384258374, -0.96202143495696, -0.15301870801552, -0.09432375099565}, + {-0.97865075648479, -0.20300322280841, -0.02581111653779, -0.01913568980258} +}; + +/* +* A rotation matrix to remove correlation among LAR coefficients +* of different LAR vectors. One might guess that decorrelation matrix +* for the first component should differ from the second component +* but we haven't observed a significant benefit of having different +* decorrelation matrices for different components. +*/ +const double WebRtcIsac_kInterVecDecorrMatUb12 +[UB_LPC_VEC_PER_FRAME][UB_LPC_VEC_PER_FRAME] = +{ + { 0.70650597970460, -0.70770707262373}, + {-0.70770707262373, -0.70650597970460} +}; + +/* +* LAR quantization step-size. +*/ +const double WebRtcIsac_kLpcShapeQStepSizeUb12 = 0.150000; + +/* +* The smallest reconstruction points for quantiztion of LAR coefficients. +*/ +const double WebRtcIsac_kLpcShapeLeftRecPointUb12 +[UB_LPC_ORDER*UB_LPC_VEC_PER_FRAME] = +{ + -0.900000, -1.050000, -1.350000, -1.800000, -1.350000, -1.650000, + -2.250000, -3.450000 +}; + +/* +* Number of reconstruction points of quantizers for LAR coefficients. +*/ +const WebRtc_Word16 WebRtcIsac_kLpcShapeNumRecPointUb12 +[UB_LPC_ORDER * UB_LPC_VEC_PER_FRAME] = +{ + 13, 15, 19, 27, 19, 24, 32, 48 +}; + +/* +* Starting index for entropy decoder to search for the right interval, +* one entry per LAR coefficient +*/ +const WebRtc_UWord16 WebRtcIsac_kLpcShapeEntropySearchUb12 +[UB_LPC_ORDER * UB_LPC_VEC_PER_FRAME] = +{ + 6, 7, 9, 13, 9, 12, 16, 24 +}; + +/* +* The following 8 vectors define CDF of 8 decorrelated LAR +* coefficients. +*/ +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec0Ub12[14] = +{ + 0, 13, 95, 418, 1687, 6498, 21317, 44200, 59029, 63849, 65147, + 65449, 65525, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec1Ub12[16] = +{ + 0, 10, 59, 255, 858, 2667, 8200, 22609, 42988, 57202, 62947, + 64743, 65308, 65476, 65522, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec2Ub12[20] = +{ + 0, 18, 40, 118, 332, 857, 2017, 4822, 11321, 24330, 41279, + 54342, 60637, 63394, 64659, 65184, 65398, 65482, 65518, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec3Ub12[28] = +{ + 0, 21, 38, 90, 196, 398, 770, 1400, 2589, 4650, 8211, + 14933, 26044, 39592, 50814, 57452, 60971, 62884, 63995, 64621, 65019, 65273, + 65410, 65480, 65514, 65522, 65531, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec4Ub12[20] = +{ + 0, 7, 46, 141, 403, 969, 2132, 4649, 10633, 24902, 43254, + 54665, 59928, 62674, 64173, 64938, 65293, 65464, 65523, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec5Ub12[25] = +{ + 0, 7, 22, 72, 174, 411, 854, 1737, 3545, 6774, 13165, + 25221, 40980, 52821, 58714, 61706, 63472, 64437, 64989, 65287, 65430, 65503, + 65525, 65529, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec6Ub12[33] = +{ + 0, 11, 21, 36, 65, 128, 228, 401, 707, 1241, 2126, + 3589, 6060, 10517, 18853, 31114, 42477, 49770, 54271, 57467, 59838, 61569, + 62831, 63772, 64433, 64833, 65123, 65306, 65419, 65466, 65499, 65519, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec7Ub12[49] = +{ + 0, 14, 34, 67, 107, 167, 245, 326, 449, 645, 861, + 1155, 1508, 2003, 2669, 3544, 4592, 5961, 7583, 9887, 13256, 18765, + 26519, 34077, 40034, 44349, 47795, 50663, 53262, 55473, 57458, 59122, 60592, + 61742, 62690, 63391, 63997, 64463, 64794, 65045, 65207, 65309, 65394, 65443, + 65478, 65504, 65514, 65523, 65535 +}; + +/* +* An array of pointers to CDFs of decorrelated LARs +*/ +const WebRtc_UWord16* WebRtcIsac_kLpcShapeCdfMatUb12 +[UB_LPC_ORDER * UB_LPC_VEC_PER_FRAME] = +{ + WebRtcIsac_kLpcShapeCdfVec0Ub12, WebRtcIsac_kLpcShapeCdfVec1Ub12, + WebRtcIsac_kLpcShapeCdfVec2Ub12, WebRtcIsac_kLpcShapeCdfVec3Ub12, + WebRtcIsac_kLpcShapeCdfVec4Ub12, WebRtcIsac_kLpcShapeCdfVec5Ub12, + WebRtcIsac_kLpcShapeCdfVec6Ub12, WebRtcIsac_kLpcShapeCdfVec7Ub12 +}; diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/lpc_shape_swb12_tables.h.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/lpc_shape_swb12_tables.h.svn-base new file mode 100644 index 0000000000..1e93847fae --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/lpc_shape_swb12_tables.h.svn-base @@ -0,0 +1,65 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * lpc_shape_swb12_tables.h + * + * This file declares tables used for entropy coding of LPC shape of + * upper-band signal if the bandwidth is 12 kHz. + * + */ + +#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_SHAPE_SWB12_TABLES_H_ +#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_SHAPE_SWB12_TABLES_H_ + +#include "settings.h" +#include "typedefs.h" + +extern const double WebRtcIsac_kMeanLarUb12[UB_LPC_ORDER]; + +extern const double WebRtcIsac_kMeanLpcGain; + +extern const double WebRtcIsac_kIntraVecDecorrMatUb12[UB_LPC_ORDER][UB_LPC_ORDER]; + +extern const double WebRtcIsac_kInterVecDecorrMatUb12 +[UB_LPC_VEC_PER_FRAME][UB_LPC_VEC_PER_FRAME]; + +extern const double WebRtcIsac_kLpcShapeQStepSizeUb12; + +extern const double WebRtcIsac_kLpcShapeLeftRecPointUb12 +[UB_LPC_ORDER*UB_LPC_VEC_PER_FRAME]; + + +extern const WebRtc_Word16 WebRtcIsac_kLpcShapeNumRecPointUb12 +[UB_LPC_ORDER * UB_LPC_VEC_PER_FRAME]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeEntropySearchUb12 +[UB_LPC_ORDER * UB_LPC_VEC_PER_FRAME]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec0Ub12[14]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec1Ub12[16]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec2Ub12[20]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec3Ub12[28]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec4Ub12[20]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec5Ub12[25]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec6Ub12[33]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec7Ub12[49]; + +extern const WebRtc_UWord16* WebRtcIsac_kLpcShapeCdfMatUb12 +[UB_LPC_ORDER * UB_LPC_VEC_PER_FRAME]; + +#endif // WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_SHAPE_SWB12_TABLES_H_ diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/lpc_shape_swb16_tables.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/lpc_shape_swb16_tables.c.svn-base new file mode 100644 index 0000000000..89f45233f5 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/lpc_shape_swb16_tables.c.svn-base @@ -0,0 +1,248 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * SWB16_KLT_Tables.c + * + * This file defines tables used for entropy coding of LPC shape of + * upper-band signal if the bandwidth is 16 kHz. + * + */ + +#include "lpc_shape_swb16_tables.h" +#include "settings.h" +#include "typedefs.h" + +/* +* Mean value of LAR +*/ +const double WebRtcIsac_kMeanLarUb16[UB_LPC_ORDER] = +{ +0.454978, 0.364747, 0.102999, 0.104523 +}; + +/* +* A rotation matrix to decorrelate intra-vector correlation, +* i.e. correlation among components of LAR vector. +*/ +const double WebRtcIsac_kIintraVecDecorrMatUb16[UB_LPC_ORDER][UB_LPC_ORDER] = +{ + {-0.020528, -0.085858, -0.002431, 0.996093}, + {-0.033155, 0.036102, 0.998786, 0.004866}, + { 0.202627, 0.974853, -0.028940, 0.088132}, + {-0.978479, 0.202454, -0.039785, -0.002811} +}; + +/* +* A rotation matrix to remove correlation among LAR coefficients +* of different LAR vectors. One might guess that decorrelation matrix +* for the first component should differ from the second component +* but we haven't observed a significant benefit of having different +* decorrelation matrices for different components. +*/ +const double WebRtcIsac_kInterVecDecorrMatUb16 +[UB16_LPC_VEC_PER_FRAME][UB16_LPC_VEC_PER_FRAME] = +{ + { 0.291675, -0.515786, 0.644927, 0.482658}, + {-0.647220, 0.479712, 0.289556, 0.516856}, + { 0.643084, 0.485489, -0.289307, 0.516763}, + {-0.287185, -0.517823, -0.645389, 0.482553} +}; + +/* +* The following 16 vectors define CDF of 16 decorrelated LAR +* coefficients. +*/ +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec01Ub16[14] = +{ + 0, 2, 20, 159, 1034, 5688, 20892, 44653, + 59849, 64485, 65383, 65518, 65534, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec1Ub16[16] = +{ + 0, 1, 7, 43, 276, 1496, 6681, 21653, + 43891, 58859, 64022, 65248, 65489, 65529, 65534, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec2Ub16[18] = +{ + 0, 1, 9, 54, 238, 933, 3192, 9461, + 23226, 42146, 56138, 62413, 64623, 65300, 65473, 65521, + 65533, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec3Ub16[30] = +{ + 0, 2, 4, 8, 17, 36, 75, 155, + 329, 683, 1376, 2662, 5047, 9508, 17526, 29027, + 40363, 48997, 55096, 59180, 61789, 63407, 64400, 64967, + 65273, 65429, 65497, 65526, 65534, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec4Ub16[16] = +{ + 0, 1, 10, 63, 361, 1785, 7407, 22242, + 43337, 58125, 63729, 65181, 65472, 65527, 65534, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec5Ub16[17] = +{ + 0, 1, 7, 29, 134, 599, 2443, 8590, + 22962, 42635, 56911, 63060, 64940, 65408, 65513, 65531, + 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec6Ub16[21] = +{ + 0, 1, 5, 16, 57, 191, 611, 1808, + 4847, 11755, 24612, 40910, 53789, 60698, 63729, 64924, + 65346, 65486, 65523, 65532, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec7Ub16[36] = +{ + 0, 1, 4, 12, 25, 55, 104, 184, + 314, 539, 926, 1550, 2479, 3861, 5892, 8845, + 13281, 20018, 29019, 38029, 45581, 51557, 56057, 59284, + 61517, 63047, 64030, 64648, 65031, 65261, 65402, 65480, + 65518, 65530, 65534, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec8Ub16[21] = +{ + 0, 1, 2, 7, 26, 103, 351, 1149, + 3583, 10204, 23846, 41711, 55361, 61917, 64382, 65186, + 65433, 65506, 65528, 65534, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec01Ub160[21] = +{ + 0, 6, 19, 63, 205, 638, 1799, 4784, + 11721, 24494, 40803, 53805, 60886, 63822, 64931, 65333, + 65472, 65517, 65530, 65533, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec01Ub161[28] = +{ + 0, 1, 3, 11, 31, 86, 221, 506, + 1101, 2296, 4486, 8477, 15356, 26079, 38941, 49952, + 57165, 61257, 63426, 64549, 65097, 65351, 65463, 65510, + 65526, 65532, 65534, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec01Ub162[55] = +{ + 0, 3, 12, 23, 42, 65, 89, 115, + 150, 195, 248, 327, 430, 580, 784, 1099, + 1586, 2358, 3651, 5899, 9568, 14312, 19158, 23776, + 28267, 32663, 36991, 41153, 45098, 48680, 51870, 54729, + 57141, 59158, 60772, 62029, 63000, 63761, 64322, 64728, + 65000, 65192, 65321, 65411, 65463, 65496, 65514, 65523, + 65527, 65529, 65531, 65532, 65533, 65534, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec01Ub163[26] = +{ + 0, 2, 4, 10, 21, 48, 114, 280, + 701, 1765, 4555, 11270, 24267, 41213, 54285, 61003, + 63767, 64840, 65254, 65421, 65489, 65514, 65526, 65532, + 65534, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec01Ub164[28] = +{ + 0, 1, 3, 6, 15, 36, 82, 196, + 453, 1087, 2557, 5923, 13016, 25366, 40449, 52582, + 59539, 62896, 64389, 65033, 65316, 65442, 65494, 65519, + 65529, 65533, 65534, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec01Ub165[34] = +{ + 0, 2, 4, 8, 18, 35, 73, 146, + 279, 524, 980, 1789, 3235, 5784, 10040, 16998, + 27070, 38543, 48499, 55421, 59712, 62257, 63748, 64591, + 65041, 65278, 65410, 65474, 65508, 65522, 65530, 65533, + 65534, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec01Ub166[71] = +{ + 0, 1, 2, 6, 13, 26, 55, 92, + 141, 191, 242, 296, 355, 429, 522, 636, + 777, 947, 1162, 1428, 1753, 2137, 2605, 3140, + 3743, 4409, 5164, 6016, 6982, 8118, 9451, 10993, + 12754, 14810, 17130, 19780, 22864, 26424, 30547, 35222, + 40140, 44716, 48698, 52056, 54850, 57162, 59068, 60643, + 61877, 62827, 63561, 64113, 64519, 64807, 65019, 65167, + 65272, 65343, 65399, 65440, 65471, 65487, 65500, 65509, + 65518, 65524, 65527, 65531, 65533, 65534, 65535 +}; + +/* +* An array of pointers to CDFs of decorrelated LARs +*/ +const WebRtc_UWord16* WebRtcIsac_kLpcShapeCdfMatUb16 +[UB_LPC_ORDER * UB16_LPC_VEC_PER_FRAME] = { + WebRtcIsac_kLpcShapeCdfVec01Ub16, + WebRtcIsac_kLpcShapeCdfVec1Ub16, + WebRtcIsac_kLpcShapeCdfVec2Ub16, + WebRtcIsac_kLpcShapeCdfVec3Ub16, + WebRtcIsac_kLpcShapeCdfVec4Ub16, + WebRtcIsac_kLpcShapeCdfVec5Ub16, + WebRtcIsac_kLpcShapeCdfVec6Ub16, + WebRtcIsac_kLpcShapeCdfVec7Ub16, + WebRtcIsac_kLpcShapeCdfVec8Ub16, + WebRtcIsac_kLpcShapeCdfVec01Ub160, + WebRtcIsac_kLpcShapeCdfVec01Ub161, + WebRtcIsac_kLpcShapeCdfVec01Ub162, + WebRtcIsac_kLpcShapeCdfVec01Ub163, + WebRtcIsac_kLpcShapeCdfVec01Ub164, + WebRtcIsac_kLpcShapeCdfVec01Ub165, + WebRtcIsac_kLpcShapeCdfVec01Ub166 +}; + +/* +* The smallest reconstruction points for quantiztion of LAR coefficients. +*/ +const double WebRtcIsac_kLpcShapeLeftRecPointUb16 +[UB_LPC_ORDER * UB16_LPC_VEC_PER_FRAME] = +{ + -0.8250, -0.9750, -1.1250, -2.1750, -0.9750, -1.1250, -1.4250, + -2.6250, -1.4250, -1.2750, -1.8750, -3.6750, -1.7250, -1.8750, + -2.3250, -5.4750 +}; + +/* +* Number of reconstruction points of quantizers for LAR coefficients. +*/ +const WebRtc_Word16 WebRtcIsac_kLpcShapeNumRecPointUb16 +[UB_LPC_ORDER * UB16_LPC_VEC_PER_FRAME] = +{ + 13, 15, 17, 29, 15, 16, 20, 35, 20, + 20, 27, 54, 25, 27, 33, 70 +}; + +/* +* Starting index for entropy decoder to search for the right interval, +* one entry per LAR coefficient +*/ +const WebRtc_UWord16 WebRtcIsac_kLpcShapeEntropySearchUb16 +[UB_LPC_ORDER * UB16_LPC_VEC_PER_FRAME] = +{ + 6, 7, 8, 14, 7, 8, 10, 17, 10, + 10, 13, 27, 12, 13, 16, 35 +}; + +/* +* LAR quantization step-size. +*/ +const double WebRtcIsac_kLpcShapeQStepSizeUb16 = 0.150000; diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/lpc_shape_swb16_tables.h.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/lpc_shape_swb16_tables.h.svn-base new file mode 100644 index 0000000000..68d08b2047 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/lpc_shape_swb16_tables.h.svn-base @@ -0,0 +1,79 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * lpc_shape_swb16_tables.h + * + * This file declares tables used for entropy coding of LPC shape of + * upper-band signal if the bandwidth is 16 kHz. + * + */ + +#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_SHAPE_SWB16_TABLES_H_ +#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_SHAPE_SWB16_TABLES_H_ + +#include "settings.h" +#include "typedefs.h" + + +extern const double WebRtcIsac_kMeanLarUb16[UB_LPC_ORDER]; + +extern const double WebRtcIsac_kIintraVecDecorrMatUb16[UB_LPC_ORDER][UB_LPC_ORDER]; + +extern const double WebRtcIsac_kInterVecDecorrMatUb16 +[UB16_LPC_VEC_PER_FRAME][UB16_LPC_VEC_PER_FRAME]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec01Ub16[14]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec1Ub16[16]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec2Ub16[18]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec3Ub16[30]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec4Ub16[16]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec5Ub16[17]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec6Ub16[21]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec7Ub16[36]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec8Ub16[21]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec01Ub160[21]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec01Ub161[28]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec01Ub162[55]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec01Ub163[26]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec01Ub164[28]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec01Ub165[34]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec01Ub166[71]; + +extern const WebRtc_UWord16* WebRtcIsac_kLpcShapeCdfMatUb16 +[UB_LPC_ORDER * UB16_LPC_VEC_PER_FRAME]; + +extern const double WebRtcIsac_kLpcShapeLeftRecPointUb16 +[UB_LPC_ORDER * UB16_LPC_VEC_PER_FRAME]; + +extern const WebRtc_Word16 WebRtcIsac_kLpcShapeNumRecPointUb16 +[UB_LPC_ORDER * UB16_LPC_VEC_PER_FRAME]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeEntropySearchUb16 +[UB_LPC_ORDER * UB16_LPC_VEC_PER_FRAME]; + +extern const double WebRtcIsac_kLpcShapeQStepSizeUb16; + +#endif // WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_SHAPE_SWB16_TABLES_H_ diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/lpc_tables.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/lpc_tables.c.svn-base new file mode 100644 index 0000000000..7df6121462 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/lpc_tables.c.svn-base @@ -0,0 +1,1129 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* coding tables for the KLT coefficients */ + +#include "lpc_tables.h" +#include "settings.h" + +/* indices of KLT coefficients used */ +const WebRtc_UWord16 WebRtcIsac_kQKltSelIndGain[12] = { + 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, + 10, 11}; + +const WebRtc_UWord16 WebRtcIsac_kQKltSelIndShape[108] = { + 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, + 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, + 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, + 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, + 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, + 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, + 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, + 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, + 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, + 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, + 100, 101, 102, 103, 104, 105, 106, 107}; + +/* cdf array for model indicator */ +const WebRtc_UWord16 WebRtcIsac_kQKltModelCdf[4] = { + 0, 15434, 37548, 65535}; + +/* pointer to cdf array for model indicator */ +const WebRtc_UWord16 *WebRtcIsac_kQKltModelCdfPtr[1] = {WebRtcIsac_kQKltModelCdf}; + +/* initial cdf index for decoder of model indicator */ +const WebRtc_UWord16 WebRtcIsac_kQKltModelInitIndex[1] = {1}; + +/* offset to go from rounded value to quantization index */ +const short WebRtcIsac_kQKltQuantMinGain[12] = { + 3, 6, 4, 6, 6, 9, 5, 16, 11, 34, 32, 47}; + + +const short WebRtcIsac_kQKltQuantMinShape[108] = { + 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, + 1, 1, 1, 1, 2, 2, 2, 3, 0, 0, + 0, 0, 1, 0, 0, 0, 0, 1, 1, 1, + 1, 1, 1, 2, 2, 3, 0, 0, 0, 0, + 1, 0, 1, 1, 1, 1, 1, 1, 1, 2, + 2, 4, 3, 5, 0, 0, 0, 0, 1, 1, + 1, 1, 1, 1, 2, 1, 2, 2, 3, 4, + 4, 7, 0, 0, 1, 1, 1, 1, 1, 1, + 1, 2, 3, 2, 3, 4, 4, 5, 7, 13, + 0, 1, 1, 2, 3, 2, 2, 2, 4, 4, + 5, 6, 7, 11, 9, 13, 12, 26}; + +/* maximum quantization index */ +const WebRtc_UWord16 WebRtcIsac_kQKltMaxIndGain[12] = { + 6, 12, 8, 14, 10, 19, 12, 31, 22, 56, 52, 138}; + +const WebRtc_UWord16 WebRtcIsac_kQKltMaxIndShape[108] = { + 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, + 2, 2, 2, 2, 4, 4, 5, 6, 0, 0, + 0, 0, 1, 0, 0, 0, 0, 1, 2, 2, + 2, 2, 3, 4, 5, 7, 0, 0, 0, 0, + 2, 0, 2, 2, 2, 2, 3, 2, 2, 4, + 4, 6, 6, 9, 0, 0, 0, 0, 2, 2, + 2, 2, 2, 2, 3, 2, 4, 4, 7, 7, + 9, 13, 0, 0, 2, 2, 2, 2, 2, 2, + 3, 4, 5, 4, 6, 8, 8, 10, 16, 25, + 0, 2, 2, 4, 5, 4, 4, 4, 7, 8, + 9, 10, 13, 19, 17, 23, 25, 49}; + +/* index offset */ +const WebRtc_UWord16 WebRtcIsac_kQKltOffsetGain[3][12] = { +{ 0, 7, 20, 29, 44, 55, 75, 88, 120, 143, + 200, 253}, +{ 0, 7, 19, 27, 42, 53, 73, 86, 117, 140, + 197, 249}, +{ 0, 7, 20, 28, 44, 55, 75, 89, 121, 145, + 202, 257}}; + +const WebRtc_UWord16 WebRtcIsac_kQKltOffsetShape[3][108] = { +{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, + 11, 14, 17, 20, 23, 28, 33, 39, 46, 47, + 48, 49, 50, 52, 53, 54, 55, 56, 58, 61, + 64, 67, 70, 74, 79, 85, 93, 94, 95, 96, + 97, 100, 101, 104, 107, 110, 113, 117, 120, 123, + 128, 133, 140, 147, 157, 158, 159, 160, 161, 164, + 167, 170, 173, 176, 179, 183, 186, 191, 196, 204, + 212, 222, 236, 237, 238, 241, 244, 247, 250, 253, + 256, 260, 265, 271, 276, 283, 292, 301, 312, 329, + 355, 356, 359, 362, 367, 373, 378, 383, 388, 396, + 405, 415, 426, 440, 460, 478, 502, 528}, +{ 0, 1, 2, 3, 4, 6, 7, 8, 9, 11, + 13, 16, 19, 22, 26, 29, 34, 39, 45, 46, + 47, 48, 49, 50, 51, 52, 53, 55, 57, 60, + 63, 66, 70, 73, 78, 84, 91, 92, 93, 94, + 95, 96, 97, 99, 102, 105, 108, 111, 114, 118, + 123, 128, 134, 141, 151, 152, 153, 154, 156, 159, + 162, 165, 168, 171, 174, 177, 181, 186, 194, 200, + 208, 218, 233, 234, 235, 236, 239, 242, 245, 248, + 251, 254, 258, 263, 270, 277, 288, 297, 308, 324, + 349, 351, 354, 357, 361, 366, 372, 378, 383, 390, + 398, 407, 420, 431, 450, 472, 496, 524}, +{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 11, + 14, 17, 20, 23, 26, 29, 34, 40, 47, 48, + 49, 50, 51, 52, 53, 54, 55, 58, 61, 64, + 67, 70, 73, 77, 82, 88, 96, 97, 98, 99, + 101, 102, 104, 107, 110, 113, 116, 119, 122, 125, + 129, 134, 141, 150, 160, 161, 162, 163, 166, 168, + 171, 174, 177, 180, 183, 186, 190, 195, 201, 208, + 216, 226, 243, 244, 245, 248, 251, 254, 257, 260, + 263, 268, 273, 278, 284, 291, 299, 310, 323, 340, + 366, 368, 371, 374, 379, 383, 389, 394, 399, 406, + 414, 422, 433, 445, 461, 480, 505, 533}}; + +/* initial cdf index for KLT coefficients */ +const WebRtc_UWord16 WebRtcIsac_kQKltInitIndexGain[3][12] = { +{ 3, 6, 4, 7, 5, 10, 6, 16, 11, 28, + 26, 69}, +{ 3, 6, 4, 7, 5, 10, 6, 15, 11, 28, + 26, 69}, +{ 3, 6, 4, 8, 5, 10, 7, 16, 12, 28, + 27, 70}}; + +const WebRtc_UWord16 WebRtcIsac_kQKltInitIndexShape[3][108] = { +{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, + 1, 1, 1, 1, 2, 2, 3, 3, 0, 0, + 0, 0, 1, 0, 0, 0, 0, 1, 1, 1, + 1, 1, 2, 2, 3, 4, 0, 0, 0, 0, + 1, 0, 1, 1, 1, 1, 2, 1, 1, 2, + 2, 3, 3, 5, 0, 0, 0, 0, 1, 1, + 1, 1, 1, 1, 2, 1, 2, 2, 4, 4, + 5, 7, 0, 0, 1, 1, 1, 1, 1, 1, + 2, 2, 3, 2, 3, 4, 4, 5, 8, 13, + 0, 1, 1, 2, 3, 2, 2, 2, 4, 4, + 5, 5, 7, 10, 9, 12, 13, 25}, +{ 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, + 1, 1, 1, 2, 1, 2, 2, 3, 0, 0, + 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, + 1, 2, 1, 2, 3, 3, 0, 0, 0, 0, + 0, 0, 1, 1, 1, 1, 1, 1, 2, 2, + 2, 3, 3, 5, 0, 0, 0, 1, 1, 1, + 1, 1, 1, 1, 1, 2, 2, 4, 3, 4, + 5, 7, 0, 0, 0, 1, 1, 1, 1, 1, + 1, 2, 2, 3, 3, 5, 4, 5, 8, 12, + 1, 1, 1, 2, 2, 3, 3, 2, 3, 4, + 4, 6, 5, 9, 11, 12, 14, 25}, +{ 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, + 1, 1, 1, 1, 1, 2, 3, 3, 0, 0, + 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, + 1, 1, 2, 2, 3, 4, 0, 0, 0, 1, + 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, + 2, 3, 4, 5, 0, 0, 0, 1, 1, 1, + 1, 1, 1, 1, 1, 2, 2, 3, 3, 4, + 5, 8, 0, 0, 1, 1, 1, 1, 1, 1, + 2, 2, 2, 3, 3, 4, 5, 6, 8, 13, + 1, 1, 1, 2, 2, 3, 2, 2, 3, 4, + 4, 5, 6, 8, 9, 12, 14, 25}}; + +/* offsets for quantizer representation levels*/ +const WebRtc_UWord16 WebRtcIsac_kQKltOfLevelsGain[3] = { + 0, 392, 779}; + +const WebRtc_UWord16 WebRtcIsac_kQKltOfLevelsShape[3] = { + 0, 578, 1152}; + +/* quantizer representation levels */ +const double WebRtcIsac_kQKltLevelsGain[1176] = { +-2.78127126, -1.76745590, -0.77913790, -0.00437329, 0.79961206, 1.81775776, 2.81389782, -5.78753143, -4.88384084, -3.89320940, +-2.88133610, -1.92859977, -0.86347396, 0.02003888, 0.86140400, 1.89667156, 2.97134967, 3.98781964, 4.91727277, 5.82865898, +-4.11195874, -2.80898424, -1.87547977, -0.80943825, -0.00679084, 0.79573851, 1.83953397, 2.67586037, 3.76274082, -6.10933968, +-4.93034581, -3.89281296, -2.91530625, -1.89684163, -0.85319130, -0.02275767, 0.86862017, 1.91578276, 2.96107339, 3.96543056, + 4.91369908, 5.91058154, 6.83848343, 8.07136925, -5.87470395, -4.84703049, -3.84284597, -2.86168446, -1.89290192, -0.82798145, +-0.00080013, 0.82594974, 1.85754329, 2.88351798, 3.96172628, -8.85684885, -7.87387461, -6.97811862, -5.93256270, -4.94301439, +-3.95513701, -2.96041544, -1.94031192, -0.87961478, -0.00456201, 0.89911505, 1.91723376, 2.94011511, 3.93302540, 4.97990967, + 5.93133404, 7.02181199, 7.92407762, 8.80155440, 10.04665814, -4.82396678, -3.85612158, -2.89482244, -1.89558408, -0.90036978, +-0.00677823, 0.90607989, 1.90937981, 2.91175777, 3.91637730, 4.97565723, 5.84771228, 7.11145863, -16.07879840, -15.03776309, +-13.93905670, -12.95671800, -11.89171202, -10.95820934, -9.95923714, -8.94357334, -7.99068299, -6.97481009, -5.94826231, -4.96673988, +-3.97490466, -2.97846970, -1.95130435, -0.94215262, -0.01444043, 0.96770704, 1.95848598, 2.94107862, 3.95666119, 4.97253085, + 5.97191122, 6.93277360, 7.96608727, 8.87958779, 10.00264269, 10.86560820, 12.07449071, 13.04491775, 13.97507061, 14.91845261, +-10.85696295, -9.83365357, -9.01245635, -7.95915145, -6.95625003, -5.95362618, -4.93468444, -3.98760978, -2.95044407, -1.97041277, +-0.97701799, -0.00840234, 0.97834289, 1.98361415, 2.97802439, 3.96415871, 4.95369042, 5.94101770, 6.92756798, 7.94063998, + 8.85951828, 9.97077022, 11.00068503, -33.92030406, -32.81426422, -32.00000000, -31.13243639, -30.11886909, -29.06017570, -28.12598824, +-27.22045482, -25.81215858, -25.07849962, -23.93018013, -23.02097643, -21.89529725, -20.99091085, -19.98889048, -18.94327044, -17.96562071, +-16.96126218, -15.95054062, -14.98516200, -13.97101012, -13.02106500, -11.98438006, -11.03216748, -9.95930286, -8.97043946, -7.98085082, +-6.98360995, -5.98998802, -4.98668173, -4.00032906, -3.00420619, -1.98701132, -0.99324682, -0.00609324, 0.98297834, 1.99483076, + 3.00305044, 3.97142097, 4.97525759, 5.98612258, 6.97448236, 7.97575900, 9.01086211, 9.98665542, 11.00541438, 11.98078628, + 12.92352471, 14.06849675, 14.99949430, 15.94904834, 16.97440321, 18.04040916, 18.88987609, 20.05312391, 21.00000000, 21.79443341, +-31.98578825, -31.00000000, -29.89060567, -28.98555686, -27.97114102, -26.84935410, -26.02402230, -24.94195278, -23.92336849, -22.95552382, +-21.97932836, -20.96055470, -19.99649553, -19.03436122, -17.96706525, -17.01139515, -16.01363516, -14.99154248, -14.00298333, -12.99630613, +-11.99955519, -10.99000421, -10.00819092, -8.99763648, -7.98431793, -7.01769025, -5.99604690, -4.99980697, -3.99334671, -3.01748192, +-2.02051217, -1.00848371, -0.01942358, 1.00477757, 1.95477872, 2.98593031, 3.98779079, 4.96862849, 6.02694771, 6.93983733, + 7.89874717, 8.99615862, 10.02367921, 10.96293452, 11.84351528, 12.92207187, 13.85122329, 15.05146877, 15.99371264, 17.00000000, + 18.00000000, 19.00000000, 19.82763573, -47.00000000, -46.00000000, -44.87138498, -44.00000000, -43.00000000, -42.00000000, -41.00000000, +-39.88966612, -38.98913239, -37.80306486, -37.23584325, -35.94200288, -34.99881301, -34.11361858, -33.06507360, -32.13129135, -30.90891364, +-29.81511907, -28.99250380, -28.04535391, -26.99767800, -26.04418164, -24.95687851, -24.04865595, -23.03392645, -21.89366707, -20.93517364, +-19.99388660, -18.91620943, -18.03749683, -16.99532379, -15.98683813, -15.06421479, -13.99359211, -12.99714098, -11.97022520, -10.98500279, +-9.98834422, -8.95729330, -8.01232284, -7.00253661, -5.99681626, -5.01207817, -3.95914904, -3.01232178, -1.96615919, -0.97687670, + 0.01228030, 0.98412288, 2.01753544, 3.00580570, 3.97783510, 4.98846894, 6.01321400, 7.00867732, 8.00416375, 9.01771966, + 9.98637729, 10.98255180, 11.99194163, 13.01807333, 14.00999545, 15.00118556, 16.00089224, 17.00584148, 17.98251763, 18.99942091, + 19.96917690, 20.97839265, 21.98207297, 23.00171271, 23.99930737, 24.99746061, 26.00936304, 26.98240132, 28.01126868, 29.01395915, + 29.98153507, 31.01376711, 31.99876818, 33.00475317, 33.99753994, 34.99493913, 35.98933585, 36.95620160, 37.98428461, 38.99317544, + 40.01832073, 40.98048133, 41.95999283, 42.98232091, 43.96523612, 44.99574268, 45.99524194, 47.05464025, 48.03821548, 48.99354366, + 49.96400411, 50.98017973, 51.95184408, 52.96291806, 54.00194392, 54.96603783, 55.95623778, 57.03076595, 58.05889901, 58.99081551, + 59.97928121, 61.05071612, 62.03971580, 63.01286038, 64.01290338, 65.02074503, 65.99454594, 67.00399425, 67.96571257, 68.95305727, + 69.92030664, 70.95594862, 71.98088567, 73.04764124, 74.00285480, 75.02696330, 75.89837673, 76.93459997, 78.16266309, 78.83317543, + 80.00000000, 80.87251574, 82.09803524, 83.10671664, 84.00000000, 84.77023523, 86.00000000, 87.00000000, 87.92946897, 88.69159118, + 90.00000000, 90.90535270, -3.00000000, -2.00000000, -0.77592424, -0.00564307, 0.76727305, 2.00000000, 3.00000000, -6.00000000, +-5.00000000, -4.00000000, -2.92897924, -1.85623684, -0.72445303, -0.00119184, 0.72896652, 2.05710416, 3.17909894, 4.00000000, + 5.00000000, -3.00000000, -2.00000000, -0.67480586, -0.00028016, 0.66618169, 2.00000000, 3.00000000, 4.00000000, -7.00000000, +-6.00000000, -5.00000000, -3.78336783, -2.84811556, -2.04088844, -0.71114371, 0.03142493, 0.69662772, 1.91417930, 3.00000000, + 4.01411062, 5.00000000, 6.00000000, 7.00000000, -6.00000000, -5.00000000, -4.00000000, -3.00000000, -2.00000000, -0.63703469, + 0.00169604, 0.66294191, 1.83808563, 3.00000000, 4.00000000, -8.00000000, -7.00000000, -6.03082300, -5.00000000, -3.88061019, +-2.92670084, -1.99902336, -0.72898996, -0.02880170, 0.73769927, 1.95920233, 2.78356263, 4.08100921, 5.00000000, 6.00000000, + 6.78771437, 8.00000000, 9.00000000, 10.00000000, 11.00000000, -5.00000000, -4.00000000, -2.88150384, -1.89520024, -0.71479482, + 0.00962397, 0.72816030, 1.73583550, 3.00000000, 4.00000000, 5.00000000, 6.00000000, 7.00000000, -16.00000000, -15.00000000, +-13.80516401, -13.00000000, -12.00000000, -11.00000000, -10.02723144, -9.11825995, -8.05820112, -7.00000000, -6.17943541, -5.01837980, +-3.97546169, -2.92806857, -1.89778775, -0.81138893, -0.02246016, 0.80528415, 1.85705214, 2.96438524, 3.97540151, 4.79684246, + 6.00000000, 6.75549513, 8.12185828, 9.00000000, 10.00000000, 11.00000000, 12.00000000, 13.00000000, 14.00000000, -11.00000000, +-10.00000000, -9.00000000, -7.91603344, -6.77865892, -5.85765006, -4.93342332, -3.96679157, -2.84925552, -1.89230732, -0.85384229, + 0.00579591, 0.84863246, 1.89006713, 2.89483818, 3.87322971, 5.13228411, 6.00000000, 7.00000000, 8.00000000, 9.00000000, + 10.00000000, 11.00000000, -34.00000000, -33.00000000, -32.00000000, -31.00000000, -30.00000000, -29.00000000, -28.00000000, -27.00000000, +-26.00000000, -25.00000000, -24.00000000, -23.00000000, -22.00000000, -21.00000000, -20.19501953, -19.00000000, -18.00000000, -17.00000000, +-16.00000000, -14.89069633, -14.00000000, -13.00000000, -12.16260304, -11.15418282, -9.83543570, -8.85600407, -7.82712677, -7.05664308, +-5.97007352, -4.89268438, -3.93822771, -2.94975269, -1.92192127, -0.90702480, 0.03974847, 0.92488359, 1.93747579, 2.94500522, + 3.95181797, 4.95433087, 5.95141808, 7.00212920, 8.02964757, 9.03210585, 9.84644504, 10.82907720, 11.87622530, 12.96908371, + 14.00000000, 15.16963413, 15.94902025, 17.00000000, 18.00000000, 19.00000000, 20.00000000, 21.00000000, 22.00000000, -29.00000000, +-27.79780781, -27.00757888, -26.01571026, -24.89695568, -23.99946491, -22.98699614, -21.96678139, -20.99883532, -20.00851529, -18.94738054, +-17.98672566, -16.98684787, -15.96917397, -14.99856852, -13.98974852, -12.97786927, -11.96110939, -10.98877093, -9.99875257, -8.99001359, +-8.00799989, -6.99471760, -6.00034670, -4.99936372, -4.00581479, -3.00424577, -2.02047620, -0.99713266, -0.00366397, 1.00803955, + 1.98452687, 3.00748501, 4.02714611, 4.97661026, 5.99337271, 6.99754716, 8.00713602, 8.97184974, 9.98047901, 10.97685939, + 11.99533975, 12.96107876, 13.95061478, 15.00756776, 15.94078690, 16.88231059, 17.92069248, 18.78011047, 20.00000000, 21.00000000, + 22.00000000, -55.76988333, -54.96048193, -53.88411581, -52.94117980, -51.80983449, -50.90359699, -50.00000000, -48.99838741, -47.97685542, +-47.03288597, -45.97820919, -45.02418374, -43.90081897, -42.88832512, -41.98234549, -40.96745512, -39.98148729, -39.06792854, -37.96493755, +-36.98707870, -36.03416079, -35.01192444, -33.95785029, -32.99469087, -31.96633807, -31.01769053, -29.99727691, -28.99329690, -27.98873019, +-27.00344273, -25.97657141, -25.00511074, -23.96689479, -23.01566842, -22.01632643, -21.00076343, -19.97788007, -18.97248680, -17.96076284, +-16.97585453, -15.98345587, -15.01612745, -13.96862118, -12.96622055, -12.02196641, -11.02078103, -9.98445656, -9.00050060, -8.03442387, +-7.00363761, -5.97921358, -4.98886269, -4.00528221, -3.01672947, -1.98599795, -1.00668518, -0.02633490, 1.00794139, 2.00837138, + 2.99213287, 3.98710216, 4.99064334, 6.01416391, 7.01759708, 7.97878151, 8.99665730, 10.02656114, 11.01863887, 12.01207901, + 13.00958725, 13.99237829, 15.00954971, 16.00724653, 17.00606559, 17.99886292, 18.99611967, 19.98808171, 21.01871930, 21.97014763, + 22.99833843, 24.00316842, 24.99949142, 25.98539601, 27.02480733, 27.98075377, 28.98266019, 30.00611445, 30.99409128, 31.94523141, + 32.97688339, 33.98800206, 35.00177074, 35.98639997, 36.98939428, 37.95644255, 39.00114054, 39.99492439, 40.99338254, 41.97050844, + 43.03085663, 43.96757668, 44.97800970, 45.95953358, 46.98109551, 47.99368477, 49.00141209, 49.94459923, 50.93298108, 51.99894661, + 53.06463883, 53.99704669, 55.02037199, 55.98368047, 57.01930954, 58.03813852, 58.96232502, 60.01644186, 61.03254711, 62.01086576, + 62.87962247, 63.98378413, 65.02189831, 65.93003954, 66.92439900, 68.07051633, 68.95928756, 70.03315022, 71.05579859, 72.00000000, + 73.00000000, 74.00000000, 75.00000000, 75.93485291, 77.20950456, 78.00000000, 79.00000000, 79.91519960, 81.00000000, -3.00000000, +-2.00000000, -0.65174074, -0.00092112, 0.62967387, 2.00000000, 3.00000000, -6.00000000, -5.00000000, -4.00000000, -2.89861729, +-1.69999061, -0.72632201, 0.00219241, 0.72891750, 1.73257865, 3.00000000, 3.76561508, 5.00000000, 6.00000000, -3.00000000, +-2.00000000, -0.66227013, 0.00389373, 0.66163500, 2.00000000, 3.00000000, 4.00000000, -8.00000000, -7.00000000, -6.00000000, +-4.76421796, -4.04320264, -3.01415201, -1.84346485, -0.77185048, 0.00061977, 0.76274524, 1.84330156, 3.00000000, 4.00000000, + 5.00000000, 6.00000000, 7.00000000, -6.00000000, -5.00000000, -4.00000000, -3.00000000, -1.75749611, -0.72951347, -0.00104394, + 0.72040315, 1.72594036, 3.00000000, 4.00000000, -9.00000000, -8.00000000, -7.00000000, -5.90394062, -5.00000000, -3.75562807, +-2.89699407, -1.86696610, -0.79056636, -0.00330943, 0.79744554, 1.85149941, 2.91118681, 3.99520311, 4.96341987, 6.00000000, + 7.00000000, 8.00000000, 9.00000000, 10.00000000, -6.00000000, -4.80151529, -4.00000000, -2.87442856, -1.85285815, -0.77767592, +-0.02071301, 0.81752572, 1.82503940, 2.79602150, 3.92870203, 5.00000000, 6.00000000, 7.00000000, -17.00000000, -16.00000000, +-15.00000000, -14.00000000, -13.00000000, -12.00000000, -11.00000000, -9.80059874, -9.00000000, -8.00185204, -7.13087808, -5.92942149, +-4.77883243, -3.93417708, -2.88004618, -1.89952522, -0.86239337, 0.00332274, 0.86657548, 1.89479279, 2.89701813, 3.90987417, + 4.98910145, 6.07676766, 7.00000000, 8.00000000, 9.00000000, 10.00000000, 11.00000000, 12.00000000, 13.00000000, 14.00000000, +-12.00000000, -11.00000000, -9.89996262, -8.85894205, -7.87594823, -6.99685317, -5.94917589, -4.93914916, -3.93317670, -2.93174244, +-1.90737478, -0.90982242, 0.00803316, 0.90111563, 1.90362879, 2.90332432, 3.90654662, 4.94461954, 5.87963665, 6.91988113, + 7.79514004, 8.98805413, 10.00000000, 11.00000000, -35.00000000, -34.00000000, -33.00000000, -32.00000000, -31.00000000, -30.00000000, +-29.00000000, -28.00000000, -27.00000000, -26.00000000, -25.00000000, -24.00000000, -22.88310970, -22.00000000, -21.00000000, -20.00000000, +-19.00000000, -18.00000000, -17.00000000, -16.11854974, -15.00000000, -14.10507667, -13.04497040, -11.94846700, -10.97432494, -9.94514368, +-8.97311414, -7.94171496, -6.97232122, -5.98590548, -4.97455572, -3.95477903, -2.93935454, -1.95573532, -0.97120273, -0.02084826, + 0.95689153, 1.96679781, 2.97060165, 3.96660892, 4.96754331, 5.97996089, 6.93822411, 7.96618014, 8.95809791, 9.98891474, + 10.95713402, 11.85433084, 13.03831696, 13.84035295, 15.00729606, 15.98652872, 17.20557599, 18.00000000, 18.90794805, 20.00000000, + 21.00000000, -34.00000000, -33.00000000, -32.00000000, -31.00000000, -30.00000000, -28.97280602, -28.00000000, -27.16255057, -26.04078092, +-24.85442050, -24.15783484, -22.78614956, -21.95739865, -21.21844626, -20.03008104, -19.03888543, -17.90460490, -17.02064693, -15.84673652, +-14.87140709, -13.87996048, -12.94907251, -11.96795995, -11.00977925, -9.95103238, -8.96674655, -7.96351667, -6.96886200, -5.99335494, +-4.97515534, -3.98891694, -2.99581150, -1.98758360, -0.99249128, -0.00001403, 0.98807868, 1.99119869, 2.99019366, 3.98612953, + 5.00312941, 5.98833080, 6.99686651, 7.98373889, 8.97942222, 9.94202752, 10.99671622, 11.94306164, 12.98539825, 13.90728690, + 14.89907642, 15.94836675, 16.89611342, 17.84084949, 18.74910958, 20.00000000, -67.00000000, -66.00000000, -65.00000000, -64.00000000, +-63.02511977, -62.00000000, -61.06061493, -59.95964043, -59.12824439, -58.00000000, -57.00000000, -56.00000000, -54.87857996, -54.09689334, +-53.00000000, -52.21057366, -50.93867921, -50.03032952, -49.19283867, -47.89439051, -46.99505692, -46.04895543, -44.89687413, -43.78942208, +-42.99025156, -41.88436155, -40.99169704, -40.00320429, -38.90181498, -38.06029271, -37.05030818, -36.07554573, -35.03202233, -33.93117946, +-32.97736655, -31.98942819, -30.99546798, -30.01511004, -28.97296525, -28.02561164, -26.94386985, -25.99632704, -25.00461143, -24.01578192, +-22.99177609, -22.02261094, -20.97939001, -19.96176066, -19.00442980, -18.01529434, -17.00196902, -15.99794828, -14.98675055, -13.97517657, +-12.98676283, -11.99718760, -11.00167809, -9.98872268, -9.02138474, -8.00320338, -6.99542797, -6.00059136, -5.01311763, -4.00336943, +-3.00348281, -1.99365875, -0.98223019, 0.00126343, 0.99699237, 1.99381968, 3.00054436, 3.99898305, 5.00160508, 6.00310399, + 6.99885096, 8.02740039, 8.99515550, 9.98962151, 11.00642302, 11.98694516, 13.00018933, 13.97726018, 14.99186645, 16.00580131, + 16.97434224, 17.96982658, 19.00066438, 20.01228749, 21.00741822, 21.94988312, 23.00860212, 23.98801542, 24.97638417, 25.98003521, + 27.02336188, 27.99667029, 29.01014125, 30.02481912, 31.01415797, 31.97399854, 33.06214485, 33.99929330, 34.94095386, 35.96368372, + 36.96980925, 37.98389244, 39.01121235, 40.00715026, 41.06382894, 41.96618280, 43.01555590, 43.95430436, 45.01970038, 45.99967821, + 47.19847394, 48.04852502, 49.10609965, 50.04244122, 50.86051406, 51.92983796, 53.02781107, 54.06248545, 54.89942009, 56.08347165, + 57.06887956, 58.09671115, 59.07832400, 59.87005277, 61.14778499, 62.00000000, 63.00000000, 64.00000000, 65.00000000, 66.00000000, + 67.00000000, 68.00000000, 69.00000000, 70.00000000, 71.00000000, 72.00000000}; + +const double WebRtcIsac_kQKltLevelsShape[1735] = { + 0.00032397, 0.00008053, -0.00061202, -0.00012620, 0.00030437, 0.00054764, -0.00027902, 0.00069360, 0.00029449, -0.80219239, + 0.00091089, -0.74514927, -0.00094283, 0.64030631, -0.60509119, 0.00035575, 0.61851665, -0.62129957, 0.00375219, 0.60054900, +-0.61554359, 0.00054977, 0.63362016, -1.73118727, -0.65422341, 0.00524568, 0.66165298, 1.76785515, -1.83182018, -0.65997434, +-0.00011887, 0.67524299, 1.79933938, -1.76344480, -0.72547708, -0.00133017, 0.73104704, 1.75305377, 2.85164534, -2.80423916, +-1.71959639, -0.75419722, -0.00329945, 0.77196760, 1.72211069, 2.87339653, 0.00031089, -0.00015311, 0.00018201, -0.00035035, +-0.77357251, 0.00154647, -0.00047625, -0.00045299, 0.00086590, 0.00044762, -0.83383829, 0.00024787, -0.68526258, -0.00122472, + 0.64643255, -0.60904942, -0.00448987, 0.62309184, -0.59626442, -0.00574132, 0.62296546, -0.63222115, 0.00013441, 0.63609545, +-0.66911055, -0.00369971, 0.66346095, 2.07281301, -1.77184694, -0.67640425, -0.00010145, 0.64818392, 1.74948973, -1.69420224, +-0.71943894, -0.00004680, 0.75303493, 1.81075983, 2.80610041, -2.80005755, -1.79866753, -0.77409777, -0.00084220, 0.80141293, + 1.78291081, 2.73954236, 3.82994169, 0.00015140, -0.00012766, -0.00034241, -0.00119125, -0.76113497, 0.00069246, 0.76722027, + 0.00132862, -0.69107530, 0.00010656, 0.77061578, -0.78012970, 0.00095947, 0.77828502, -0.64787758, 0.00217168, 0.63050167, +-0.58601125, 0.00306596, 0.59466308, -0.58603410, 0.00059779, 0.64257970, 1.76512766, -0.61193600, -0.00259517, 0.59767574, +-0.61026273, 0.00315811, 0.61725479, -1.69169719, -0.65816029, 0.00067575, 0.65576890, 2.00000000, -1.72689193, -0.69780808, +-0.00040990, 0.70668487, 1.74198458, -3.79028154, -3.00000000, -1.73194459, -0.70179341, -0.00106695, 0.71302629, 1.76849782, +-2.89332364, -1.78585007, -0.78731491, -0.00132610, 0.79692976, 1.75247009, 2.97828682, -5.26238694, -3.69559829, -2.87286122, +-1.84908818, -0.84434577, -0.01167975, 0.84641753, 1.84087672, 2.87628156, 3.83556679, -0.00190204, 0.00092642, 0.00354385, +-0.00012982, -0.67742785, 0.00229509, 0.64935672, -0.58444751, 0.00470733, 0.57299534, -0.58456202, -0.00097715, 0.64593607, +-0.64060330, -0.00638534, 0.59680157, -0.59287537, 0.00490772, 0.58919707, -0.60306173, -0.00417464, 0.60562100, -1.75218757, +-0.63018569, -0.00225922, 0.63863300, -0.63949939, -0.00126421, 0.64268914, -1.75851182, -0.68318060, 0.00510418, 0.69049211, + 1.88178506, -1.71136148, -0.72710534, -0.00815559, 0.73412917, 1.79996711, -2.77111145, -1.73940498, -0.78212945, 0.01074476, + 0.77688916, 1.76873972, 2.87281379, 3.77554698, -3.75832725, -2.95463235, -1.80451491, -0.80017226, 0.00149902, 0.80729206, + 1.78265046, 2.89391793, -3.78236148, -2.83640598, -1.82532067, -0.88844327, -0.00620952, 0.88208030, 1.85757631, 2.81712391, + 3.88430176, 5.16179367, -7.00000000, -5.93805408, -4.87172597, -3.87524433, -2.89399744, -1.92359563, -0.92136341, -0.00172725, + 0.93087018, 1.90528280, 2.89809686, 3.88085708, 4.89147740, 5.89078692, -0.00239502, 0.00312564, -1.00000000, 0.00178325, + 1.00000000, -0.62198029, 0.00143254, 0.65344051, -0.59851220, -0.00676987, 0.61510140, -0.58894151, 0.00385055, 0.59794203, +-0.59808568, -0.00038214, 0.57625703, -0.63009713, -0.01107985, 0.61278758, -0.64206758, -0.00154369, 0.65480598, 1.80604162, +-1.80909286, -0.67810514, 0.00205762, 0.68571097, 1.79453891, -3.22682422, -1.73808453, -0.71870305, -0.00738594, 0.71486172, + 1.73005326, -1.66891897, -0.73689615, -0.00616203, 0.74262409, 1.73807899, -2.92417482, -1.73866741, -0.78133871, 0.00764425, + 0.80027264, 1.78668732, 2.74992588, -4.00000000, -2.75578740, -1.83697516, -0.83117035, -0.00355191, 0.83527172, 1.82814700, + 2.77377675, 3.80718693, -3.81667698, -2.83575471, -1.83372350, -0.86579471, 0.00547578, 0.87582281, 1.82858793, 2.87265007, + 3.91405377, -4.87521600, -3.78999094, -2.86437014, -1.86964365, -0.90618018, 0.00128243, 0.91497811, 1.87374952, 2.83199819, + 3.91519130, 4.76632822, -6.68713448, -6.01252467, -4.94587936, -3.88795368, -2.91299088, -1.92592211, -0.95504570, -0.00089980, + 0.94565200, 1.93239633, 2.91832808, 3.91363475, 4.88920034, 5.96471415, 6.83905252, 7.86195009, 8.81571018, -12.96141759, +-11.73039516, -10.96459719, -9.97382433, -9.04414433, -7.89460619, -6.96628608, -5.93236595, -4.93337924, -3.95479990, -2.96451499, +-1.96635876, -0.97271229, -0.00402238, 0.98343930, 1.98348291, 2.96641164, 3.95456471, 4.95517089, 5.98975714, 6.90322073, + 7.90468849, 8.85639467, 9.97255498, 10.79006309, 11.81988596, 0.04950500, -1.00000000, -0.01226628, 1.00000000, -0.59479469, +-0.10438305, 0.59822144, -2.00000000, -0.67109149, -0.09256692, 0.65171621, 2.00000000, -3.00000000, -1.68391999, -0.76681039, +-0.03354151, 0.71509146, 1.77615472, -2.00000000, -0.68661511, -0.02497881, 0.66478398, 2.00000000, -2.00000000, -0.67032784, +-0.00920582, 0.64892756, 2.00000000, -2.00000000, -0.68561894, 0.03641869, 0.73021611, 1.68293863, -4.00000000, -2.72024184, +-1.80096059, -0.81696185, 0.03604685, 0.79232033, 1.70070730, 3.00000000, -4.00000000, -2.71795670, -1.80482986, -0.86001162, + 0.03764903, 0.87723968, 1.79970771, 2.72685932, 3.67589143, -5.00000000, -4.00000000, -2.85492548, -1.78996365, -0.83250358, +-0.01376828, 0.84195506, 1.78161105, 2.76754458, 4.00000000, -6.00000000, -5.00000000, -3.82268811, -2.77563624, -1.82608163, +-0.86486114, -0.02671886, 0.86693165, 1.88422879, 2.86248347, 3.95632216, -7.00000000, -6.00000000, -5.00000000, -3.77533988, +-2.86391432, -1.87052039, -0.90513658, 0.06271236, 0.91083620, 1.85734756, 2.86031688, 3.82019418, 4.94420394, 6.00000000, +-11.00000000, -10.00000000, -9.00000000, -8.00000000, -6.91952415, -6.00000000, -4.92044374, -3.87845165, -2.87392362, -1.88413020, +-0.91915740, 0.00318517, 0.91602800, 1.89664838, 2.88925058, 3.84123856, 4.78988651, 5.94526812, 6.81953917, 8.00000000, +-9.00000000, -8.00000000, -7.03319143, -5.94530963, -4.86669720, -3.92438007, -2.88620396, -1.92848070, -0.94365985, 0.01671855, + 0.97349410, 1.93419878, 2.89740109, 3.89662823, 4.83235583, 5.88106535, 6.80328232, 8.00000000, -13.00000000, -12.00000000, +-11.00000000, -10.00000000, -9.00000000, -7.86033489, -6.83344055, -5.89844215, -4.90811454, -3.94841298, -2.95820490, -1.98627966, +-0.99161468, -0.02286136, 0.96055651, 1.95052433, 2.93969396, 3.94304346, 4.88522624, 5.87434241, 6.78309433, 7.87244101, + 9.00000000, 10.00000000, -12.09117356, -11.00000000, -10.00000000, -8.84766108, -7.86934236, -6.98544896, -5.94233429, -4.95583292, +-3.95575986, -2.97085529, -1.98955811, -0.99359873, -0.00485413, 0.98298870, 1.98093258, 2.96430203, 3.95540216, 4.96915010, + 5.96775124, 6.99236918, 7.96503302, 8.99864542, 9.85857723, 10.96541926, 11.91647197, 12.71060069, -26.00000000, -25.00000000, +-24.00585596, -23.11642573, -22.14271284, -20.89800711, -19.87815799, -19.05036354, -17.88555651, -16.86471209, -15.97711073, -14.94012359, +-14.02661226, -12.98243228, -11.97489256, -10.97402777, -9.96425624, -9.01085220, -7.97372506, -6.98795002, -5.97271328, -5.00191694, +-3.98055849, -2.98458048, -1.99470442, -0.99656768, -0.00825666, 1.00272004, 1.99922218, 2.99357669, 4.01407905, 5.01003897, + 5.98115528, 7.00018958, 8.00338125, 8.98981046, 9.98990318, 10.96341479, 11.96866930, 12.99175139, 13.94580443, 14.95745083, + 15.98992869, 16.97484646, 17.99630043, 18.93396897, 19.88347741, 20.96532482, 21.92191032, 23.22314702, 0.00006846, 0.00014352, +-0.00056203, 0.00027588, -0.00147678, 1.00000000, 0.00003823, 0.00001975, -0.00033710, -0.00096712, 1.00000000, -1.00000000, + 0.00067511, -1.00000000, 0.00342065, 1.00000000, -1.00000000, 0.00196254, 1.00000000, -1.00000000, 0.00201173, 1.00000000, +-2.00000000, -1.00000000, -0.00381686, 1.00000000, -1.00000000, 0.00178037, 1.00000000, -2.00000000, -1.00000000, -0.00320274, + 1.00000000, 2.00000000, -2.00000000, -1.00000000, 0.00426519, 1.00000000, 2.00000000, -3.00000000, -2.00000000, -1.00000000, +-0.00074072, 0.64654602, 2.00000000, 0.00031217, 0.00063348, 0.00020247, 0.00047891, 0.00122893, -0.00150669, -0.00148276, + 0.00016848, 0.00147085, 1.00000000, -0.00088160, 1.00000000, -1.00000000, 0.00381641, 1.00000000, -1.00000000, 0.00129816, + 1.00000000, -1.00000000, 0.00074903, 1.00000000, -2.00000000, -0.76230566, -0.00370764, 0.82467977, -0.78769346, -0.00492670, + 0.84532630, -2.00000000, -0.70943195, -0.01257613, 0.75905385, 2.00000000, -2.00000000, -0.62780445, -0.00408633, 0.60272506, + 2.00000000, 3.00000000, -3.00000000, -2.00000000, -0.61412985, 0.00102833, 0.61527589, 2.00000000, 3.00000000, 0.00012115, +-0.00080909, 0.00071061, -0.00227957, 0.00179794, 0.00103827, -1.00000000, 0.00444757, -1.00000000, 0.00604068, 1.00000000, +-1.00000000, 0.00427327, 1.00000000, -1.00000000, 0.00086662, 1.00000000, -1.00000000, -0.00837492, 1.00000000, -0.65715934, +-0.00645342, 0.64004630, -2.00000000, -0.64987682, -0.01449567, 0.69893373, -2.00000000, -0.63221961, 0.00421765, 0.62452105, + 2.00000000, -2.00000000, -0.60027006, -0.00110630, 0.62033821, 2.00000000, -2.00000000, -0.59823932, 0.00928313, 0.62188520, + 2.00000000, 3.00000000, -3.00000000, -2.00000000, -0.63230286, -0.00248555, 0.62632575, 2.00000000, 3.00000000, -5.00000000, +-4.00000000, -3.00000000, -2.00000000, -0.66521143, 0.00544305, 0.66930486, 2.00000000, 3.00000000, 4.00000000, 0.00077008, + 0.00061140, -0.00009317, -0.00049643, 1.00000000, -1.00000000, -0.00285084, 1.00000000, -1.00000000, 0.00601784, 1.00000000, +-1.00000000, -0.00091887, 0.75122772, -0.71579859, -0.00043545, 1.00000000, -0.85571363, -0.00227654, 0.63816873, -1.00000000, +-0.00393484, 0.76748004, -0.58223659, -0.01229777, 0.58080322, -0.61945902, -0.00232238, 0.62277938, 2.00000000, -2.00000000, +-0.60595489, -0.00535702, 0.60547736, 2.00000000, -4.00000000, -3.00000000, -2.00000000, -0.62368122, 0.01112097, 0.63997294, + 2.00000000, 3.00000000, -3.00000000, -2.00000000, -0.64318217, 0.00515139, 0.64781184, 2.00000000, -3.00000000, -1.78031579, +-0.67122588, 0.02153711, 0.67899877, 2.00000000, 3.00000000, 4.00000000, -4.00000000, -3.00000000, -1.80503233, -0.69835727, +-0.00270770, 0.70999554, 1.77332849, 3.00000000, 4.00000000, 5.00000000, -8.00000000, -7.00000000, -6.00000000, -5.00000000, +-4.00000000, -2.81600693, -1.72970368, -0.73779413, -0.01384841, 0.75694606, 1.80042618, 3.00000000, 4.00000000, 5.00000000, + 6.00000000, -0.00051787, 0.00059593, -0.00023319, -1.00000000, 0.00191861, 0.79547197, -0.75020995, 0.00217840, 0.69165833, +-1.00000000, -0.00304964, 0.67698951, -0.64516943, -0.00657667, 0.59260129, -0.62819301, -0.00456626, 0.59426260, -0.60909519, + 0.00256476, 0.61660408, -0.66560131, -0.00293463, 0.67477566, 2.00000000, -2.00000000, -0.62484067, 0.00505116, 0.63491494, + 2.00000000, -3.00000000, -2.00000000, -0.68427246, 0.00924353, 0.68755774, 2.00000000, 3.00000000, -3.00000000, -2.00000000, +-0.65390928, 0.01008025, 0.65849449, 2.00000000, 3.00000000, -5.00000000, -4.00000000, -3.00000000, -1.70848232, -0.72079538, +-0.00007674, 0.71556176, 1.76815351, 3.00000000, 4.00000000, 5.00000000, -4.00000000, -3.00000000, -1.82887466, -0.73529886, + 0.00033458, 0.73847588, 1.83009515, 3.00000000, 4.00000000, -5.00000000, -4.00000000, -2.83203553, -1.79500085, -0.77452749, +-0.00614320, 0.77416943, 1.82469471, 2.77034612, 4.00000000, 5.00000000, -7.00000000, -6.00000000, -5.00000000, -4.00000000, +-2.76574798, -1.84700836, -0.80822297, 0.00054165, 0.80901445, 1.85687331, 2.75680191, 3.81986695, 5.00000000, 6.00000000, + 7.00000000, 8.00000000, -13.00000000, -12.00000000, -11.00000000, -10.00000000, -9.00000000, -8.00000000, -7.00000000, -6.00000000, +-5.00000000, -3.88304817, -2.93396067, -1.86645989, -0.84825410, 0.00666207, 0.84853252, 1.88634684, 2.95282618, 3.89813287, + 4.89189079, 6.00000000, 7.00000000, 8.00000000, 9.00000000, 10.00000000, 11.00000000, -0.00344877, 1.00000000, -0.61413659, +-0.02115630, 0.59438887, -0.60873054, 0.00844993, 0.62510557, -2.00000000, -0.75002947, 0.00120913, 0.66616051, -2.00000000, +-0.72324691, 0.04760499, 0.70532533, 2.00000000, -3.00000000, -1.66577589, -0.78941380, -0.01909714, 0.74993685, 1.70945570, +-1.64422308, -0.70992006, -0.02795108, 0.76990363, 1.79682243, 2.96233315, -1.71686461, -0.76572785, -0.00041846, 0.78174132, + 1.66217596, -3.00000000, -1.77033369, -0.79475091, 0.03709740, 0.80097076, 1.83947400, 2.85879773, -4.00000000, -3.16528651, +-1.79564411, -0.90078981, 0.02403102, 0.86138856, 1.84207433, 2.74584048, -4.00000000, -2.91249347, -1.87804769, -0.87323549, + 0.08164382, 0.89037056, 1.82505263, 2.71336163, 4.00000000, -4.81262228, -3.87173565, -2.83424209, -1.87517938, -0.86199960, + 0.00268598, 0.89547657, 1.90713511, 2.85219071, 3.86417171, 4.80711781, 6.00000000, 7.00000000, -5.00000000, -3.82388480, +-2.82875808, -1.90350457, -0.90795818, 0.03047007, 0.93676836, 1.88844957, 2.83269711, 3.76109686, 5.00000000, -9.00000000, +-8.00000000, -6.88037957, -5.88776398, -4.91209139, -3.93902541, -2.90989221, -1.92281230, -0.98960535, -0.07440511, 0.94023957, + 1.91666262, 2.83340828, 3.83651295, 4.77839424, 6.12284019, 7.00000000, 8.00000000, 9.00000000, -12.00000000, -11.00000000, +-10.00000000, -9.00000000, -8.00000000, -6.68554513, -5.97994708, -4.98789075, -3.91383581, -2.92952795, -1.91727195, -0.93148075, +-0.00568870, 0.93515148, 1.94580068, 2.93838956, 3.92567644, 4.96573603, 5.95402763, 7.00000000, 8.00000000, 9.00000000, +-11.00000000, -9.90096030, -8.97868124, -7.93663988, -6.98806055, -5.95937864, -4.93473664, -3.95454756, -2.96518446, -1.97711766, +-0.98552111, -0.03317271, 0.95115775, 1.93785086, 2.96310779, 3.93322450, 5.01716212, 5.85909823, 6.89163669, 7.97492693, + 8.85698897, 9.79802946, 11.09373957, 12.00000000, -13.00000000, -12.00000000, -10.67579109, -9.95079100, -8.90576592, -7.93254656, +-6.96112672, -5.96015798, -4.95493809, -3.98556269, -2.98182856, -1.98150255, -0.96551153, -0.00399791, 0.98644875, 1.98043830, + 2.97969033, 3.97728257, 4.95173541, 5.95649050, 6.96447378, 7.95591513, 9.07680954, 9.92093070, 10.76496555, 11.97525735, + 13.00000000, 14.00000000, -25.00000000, -24.00000000, -23.00000000, -22.00072357, -21.00000000, -20.00000000, -19.00000000, -18.20003462, +-17.01648407, -15.78651996, -14.95660266, -13.99167850, -13.28722978, -11.85013840, -10.92025302, -9.87055810, -8.93841040, -7.95329867, +-6.97819441, -6.01593394, -5.00905213, -3.99905285, -2.99171810, -1.99062796, -1.00112466, 0.00140492, 1.00701091, 2.02327185, + 3.00194633, 3.99188294, 5.00313145, 6.00448038, 6.98904951, 7.98158293, 8.98212774, 10.00363404, 10.98641678, 11.98034311, + 12.95176779, 13.95383703, 14.99084578, 15.98600642, 16.99406826, 17.98134623, 19.01793961, 19.86072639, 20.88465474, 21.99287082, + 22.81916620, 23.77946383, 0.00000234, 0.00000298, 0.00000048, 0.00002408, -0.00000165, -0.00001831, -0.00005703, -0.00000184, +-1.00000000, 0.00001977, 1.00000000, -1.00000000, 0.00000010, 1.00000000, -1.00000000, -0.00001152, 1.00000000, -1.00000000, + 0.00000840, 1.00000000, -1.00000000, 0.00002353, 1.00000000, -0.75455603, -0.00001433, 1.00000000, -0.65859705, -0.00000703, + 0.62995860, -2.00000000, -0.72724652, -0.00033969, 0.61359174, 2.00000000, -2.00000000, -0.69510998, -0.00031410, 0.66467605, + 2.00000000, 3.00000000, -3.00000000, -2.00000000, -0.65738683, 0.00039019, 0.66554720, 1.91774106, 3.18089124, 0.00000070, + 0.00001152, -0.00000795, -0.00000058, -0.00003502, -0.00001508, -0.00004225, -0.00002165, -1.00000000, 0.00004391, 1.00000000, +-1.00000000, 0.00001784, 1.00000000, -1.00000000, -0.00003678, 1.00000000, -0.68878314, -0.00013166, 0.60880149, -0.75291978, + 0.00006493, 1.00000000, -0.76757316, 0.00003057, 0.67140524, -0.61602267, -0.00014495, 0.63625803, 2.00000000, -2.00000000, +-0.61253314, -0.00116483, 0.65071851, 2.00000000, -3.00000000, -1.71451667, -0.67799909, -0.00048294, 0.65846019, 2.00000000, +-3.02497593, -1.83515395, -0.70317981, 0.00519701, 0.67780009, 1.84218153, 2.88846262, 4.00000000, 0.00001124, 0.00000588, +-0.00000172, 0.00002835, 1.00000000, 0.00001012, -0.00008644, 1.00000000, -0.75115901, 0.00004347, 1.00000000, -1.00000000, + 0.00002800, 1.00000000, -1.00000000, -0.00006039, 1.00000000, -0.79763258, -0.00011907, 0.71713616, -0.76791870, -0.00007113, + 0.63583609, -0.62337806, 0.00012891, 0.62242094, -0.60837055, 0.00043216, 0.65515705, -0.63637782, -0.00019749, 0.60423967, + 2.00000000, -2.00000000, -0.65404827, -0.00089304, 0.64706660, 2.00000000, -1.86334076, -0.66410366, 0.00063219, 0.66968004, + 2.00000000, 3.00000000, 4.00000000, -4.00000000, -3.00000000, -1.79048834, -0.69451890, 0.00030677, 0.71009333, 1.70591343, + 3.00000000, 4.00000000, -4.00000000, -2.90176499, -1.78368781, -0.74425178, 0.00234068, 0.74847325, 1.78886822, 2.78478854, + 3.83608985, 4.95996151, 0.00002170, 0.00001281, 0.00002162, -1.00000000, -0.00007266, 1.00000000, -1.00000000, -0.00003250, +-0.64088804, 0.00015239, 1.00000000, -0.58450370, -0.00008410, 0.60567186, -1.00000000, -0.00010752, 1.00000000, -0.58922508, +-0.00017378, 0.60755779, -0.62797206, -0.00001016, 0.64432847, -0.58497934, -0.00001851, 0.59716791, -0.62642499, -0.00097386, + 0.63568558, 2.00000000, -2.00000000, -0.63236390, -0.00173361, 0.63142762, 1.75629192, -3.00000000, -2.00000000, -0.65596684, + 0.00209364, 0.65419742, 2.00000000, -3.00000000, -1.73856625, -0.67767521, -0.00119512, 0.68973603, 1.70985573, 3.00000000, +-3.00000000, -1.81820220, -0.73974134, 0.00695869, 0.72216179, 1.75624461, 3.00000000, 4.00000000, -5.00000000, -4.00000000, +-3.17718593, -1.76857567, -0.76822322, 0.00267400, 0.76414602, 1.84309221, 3.04940652, 4.00000000, -7.08189123, -6.00000000, +-5.22882249, -3.96477958, -2.79653492, -1.81923435, -0.80050253, -0.01086663, 0.82708565, 1.85804900, 2.89996354, 3.76028554, + 4.80518081, 5.81738096, 7.00000000, 8.00000000, 9.08816091, -0.00002979, -0.00000333, -1.00000000, -0.00011532, 1.00000000, +-0.70921122, -0.00005325, 0.68933188, -0.67581263, -0.00023107, 0.57868212, -0.58388312, -0.00020850, 0.60149012, -0.60912457, + 0.00001567, 0.60180554, -0.59130091, -0.00038863, 0.59908653, -2.00000000, -0.63697707, 0.00083913, 0.62040514, 2.00000000, +-2.00000000, -0.63216238, -0.00081100, 0.64411071, 2.00000000, -1.76856259, -0.65266989, -0.00243486, 0.66888899, 2.00000000, +-1.75427214, -0.71415385, -0.00226376, 0.71296778, 1.66182947, 3.00000000, -3.00000000, -1.72505821, -0.72920134, -0.00360424, + 0.73800767, 1.72848281, 3.00000000, -4.00000000, -2.95284408, -1.72025758, -0.76503859, 0.00418761, 0.75297139, 1.73959808, + 3.00000000, -5.00000000, -3.96232791, -2.74080544, -1.78897123, -0.80233505, -0.00002050, 0.79693417, 1.76182598, 2.78434458, + 3.85693287, 5.00000000, -6.00000000, -4.78439284, -3.83501790, -2.85203629, -1.84909573, -0.85382658, -0.00181019, 0.84735145, + 1.83676575, 2.83656843, 3.86722376, 4.79702431, 6.00000000, -9.00000000, -8.00000000, -7.00000000, -6.07957292, -4.84677515, +-3.85093972, -2.88683139, -1.84596391, -0.88058034, -0.00008692, 0.87554746, 1.86933183, 2.84729990, 3.89029797, 4.87311773, + 5.90844023, 7.00000000, -11.00000000, -9.97745420, -8.90015761, -7.94187517, -6.86987726, -5.84795335, -4.86693435, -3.90601819, +-2.91031804, -1.91620096, -0.90497055, 0.00659199, 0.90926869, 1.90980821, 2.91070850, 3.93685967, 4.85581177, 6.06727337, + 7.05801043, 8.00000000, 9.00000000, 10.00000000, 10.90825787, 12.00000000, 13.00000000, 14.00000000, -0.00008918, 1.00000000, +-0.54405938, 0.00120348, 0.55781920, -0.59227786, -0.00349602, 0.59777231, -1.63717598, -0.69048065, 0.00999281, 0.65770558, + 2.00000000, -2.00000000, -0.71013571, 0.00454518, 0.66991065, -3.00000000, -1.73004867, -0.73743921, 0.01162454, 0.69964842, + 1.83319587, -1.81225491, -0.76806000, 0.00164742, 0.76780397, 1.67168896, -1.64564794, -0.79903361, -0.01522880, 0.84277926, + 1.68873752, -3.00000000, -1.72063244, -0.83687428, 0.00246724, 0.84618697, 1.79464483, 2.77447025, -3.77118426, -2.75025539, +-1.82050448, -0.90373722, -0.00187780, 0.90102245, 1.85249394, 2.71364180, -2.71720889, -1.79466125, -0.89860801, -0.02725825, + 0.90877329, 1.90542096, 2.76847902, 3.71496428, -4.70257302, -3.90746659, -2.87078421, -1.88858709, -0.93608993, -0.02157425, + 0.95181182, 1.91155682, 2.83614575, 3.87820801, 4.72172277, -5.02764544, -3.80066801, -2.87484378, -1.90707477, -0.96326017, +-0.01060091, 0.96558851, 1.92191548, 2.86970759, 3.85655474, 4.83135970, 5.76387469, -9.00000000, -8.00000000, -6.75261776, +-5.86333393, -4.84846871, -3.91871758, -2.93827286, -1.93050320, -0.96359634, -0.00141931, 0.95926312, 1.92541870, 2.93009411, + 3.86699087, 4.82315929, 5.67815206, -8.76594345, -7.70350451, -6.91784020, -5.81539490, -4.92526872, -3.91513203, -2.92134949, +-1.95465646, -0.97638102, -0.00742564, 0.96948714, 1.96401112, 2.95256722, 3.93146353, 4.90991357, 5.88139022, 6.88640588, + 7.82610489, 9.00000000, -10.97611369, -9.80036760, -8.91109518, -7.92809404, -6.93865353, -5.91965899, -4.92957669, -3.95206224, +-2.97308718, -1.97778214, -0.98552568, -0.00063212, 0.98686014, 1.97511867, 2.97114218, 3.97854244, 4.96578513, 5.96457765, + 6.95180187, 7.95163483, 8.93760897, 9.87666900, 10.88024562, 11.96270158, 12.99519291, -15.00000000, -13.76826291, -12.97229116, +-12.00334834, -10.95980884, -9.98190891, -8.93798503, -7.95621309, -6.96109479, -5.96056649, -4.95843419, -3.97688640, -2.98989576, +-1.98533395, -0.99580972, 0.00694370, 0.99421120, 1.99033132, 2.98751217, 3.98549580, 4.96482394, 5.96623233, 6.93564626, + 7.93772467, 8.92015276, 9.88785129, 10.97606096, 11.79686057, -23.00000000, -22.00000000, -21.00000000, -20.00000000, -19.00000000, +-17.73310977, -16.83574096, -15.90889480, -15.00437366, -13.95007272, -12.99296117, -11.98334751, -10.96970820, -9.97775151, -8.98193840, +-7.98378966, -6.98887770, -5.99059477, -5.00228769, -3.99355850, -2.99947486, -1.99897483, -0.99375857, 0.00324880, 1.00215912, + 1.99277083, 3.00503747, 3.99390482, 4.98854283, 5.98753219, 6.98245347, 7.98089893, 8.95960522, 9.95663648, 11.00810285, + 12.01421617, 12.96208687, 13.99227766, 14.97230040, 15.95114804, 16.97347393, 17.97794884, 18.96777118, 19.94446034, 20.94799029, + 22.14740083, 22.84288347, 23.99212109, 25.00000000, 25.96562658}; + +/* cdf tables for quantizer indices */ +const WebRtc_UWord16 WebRtcIsac_kQKltCdfGain[1212] = { + 0, 13, 301, 3730, 61784, 65167, 65489, 65535, 0, 17, + 142, 314, 929, 2466, 7678, 56450, 63463, 64740, 65204, 65426, + 65527, 65535, 0, 8, 100, 724, 6301, 60105, 65125, 65510, + 65531, 65535, 0, 13, 117, 368, 1068, 3010, 11928, 53603, + 61177, 63404, 64505, 65108, 65422, 65502, 65531, 65535, 0, 4, + 17, 96, 410, 1859, 12125, 54361, 64103, 65305, 65497, 65535, + 0, 4, 88, 230, 469, 950, 1746, 3228, 6092, 16592, + 44756, 56848, 61256, 63308, 64325, 64920, 65309, 65460, 65502, 65522, + 65535, 0, 88, 352, 1675, 6339, 20749, 46686, 59284, 63525, + 64949, 65359, 65502, 65527, 65535, 0, 13, 38, 63, 117, + 234, 381, 641, 929, 1407, 2043, 2809, 4032, 5753, 8792, + 14407, 24308, 38941, 48947, 55403, 59293, 61411, 62688, 63630, 64329, + 64840, 65188, 65376, 65472, 65506, 65527, 65531, 65535, 0, 8, + 29, 75, 222, 615, 1327, 2801, 5623, 9931, 16094, 24966, + 34419, 43458, 50676, 56186, 60055, 62500, 63936, 64765, 65225, 65435, + 65514, 65535, 0, 8, 13, 15, 17, 21, 33, 59, + 71, 92, 151, 243, 360, 456, 674, 934, 1223, 1583, + 1989, 2504, 3031, 3617, 4354, 5154, 6163, 7411, 8780, 10747, + 12874, 15591, 18974, 23027, 27436, 32020, 36948, 41830, 46205, 49797, + 53042, 56094, 58418, 60360, 61763, 62818, 63559, 64103, 64509, 64798, + 65045, 65162, 65288, 65363, 65447, 65506, 65522, 65531, 65533, 65535, + 0, 4, 6, 25, 38, 71, 138, 264, 519, 808, + 1227, 1825, 2516, 3408, 4279, 5560, 7092, 9197, 11420, 14108, + 16947, 20300, 23926, 27459, 31164, 34827, 38575, 42178, 45540, 48747, + 51444, 54090, 56426, 58460, 60080, 61595, 62734, 63668, 64275, 64673, + 64936, 65112, 65217, 65334, 65426, 65464, 65477, 65489, 65518, 65527, + 65529, 65531, 65533, 65535, 0, 2, 4, 8, 10, 12, + 14, 16, 21, 33, 50, 71, 84, 92, 105, 138, + 180, 255, 318, 377, 435, 473, 511, 590, 682, 758, + 913, 1097, 1256, 1449, 1671, 1884, 2169, 2445, 2772, 3157, + 3563, 3944, 4375, 4848, 5334, 5820, 6448, 7101, 7716, 8378, + 9102, 9956, 10752, 11648, 12707, 13670, 14758, 15910, 17187, 18472, + 19627, 20649, 21951, 23169, 24283, 25552, 26862, 28227, 29391, 30764, + 31882, 33213, 34432, 35600, 36910, 38116, 39464, 40729, 41872, 43144, + 44371, 45514, 46762, 47813, 48968, 50069, 51032, 51974, 52908, 53737, + 54603, 55445, 56282, 56990, 57572, 58191, 58840, 59410, 59887, 60264, + 60607, 60946, 61269, 61516, 61771, 61960, 62198, 62408, 62558, 62776, + 62985, 63207, 63408, 63546, 63739, 63906, 64070, 64237, 64371, 64551, + 64677, 64836, 64999, 65095, 65213, 65284, 65338, 65380, 65426, 65447, + 65472, 65485, 65487, 65489, 65502, 65510, 65512, 65514, 65516, 65518, + 65522, 65531, 65533, 65535, 0, 2, 4, 6, 65528, 65531, + 65533, 65535, 0, 2, 4, 6, 8, 10, 222, 65321, + 65513, 65528, 65531, 65533, 65535, 0, 2, 4, 50, 65476, + 65529, 65531, 65533, 65535, 0, 2, 4, 6, 8, 12, + 38, 544, 64936, 65509, 65523, 65525, 65529, 65531, 65533, 65535, + 0, 2, 4, 6, 8, 10, 1055, 64508, 65528, 65531, + 65533, 65535, 0, 2, 4, 6, 8, 10, 12, 123, + 3956, 62999, 65372, 65495, 65515, 65521, 65523, 65525, 65527, 65529, + 65531, 65533, 65535, 0, 2, 4, 12, 53, 4707, 59445, + 65467, 65525, 65527, 65529, 65531, 65533, 65535, 0, 2, 4, + 6, 8, 10, 12, 14, 16, 38, 40, 50, 67, + 96, 234, 929, 14345, 55750, 64866, 65389, 65462, 65514, 65517, + 65519, 65521, 65523, 65525, 65527, 65529, 65531, 65533, 65535, 0, + 2, 4, 6, 8, 10, 15, 35, 91, 377, 1946, + 13618, 52565, 63714, 65184, 65465, 65520, 65523, 65525, 65527, 65529, + 65531, 65533, 65535, 0, 2, 4, 6, 8, 10, 12, + 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, + 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, + 54, 82, 149, 362, 751, 1701, 4239, 12893, 38627, 55072, + 60875, 63071, 64158, 64702, 65096, 65283, 65412, 65473, 65494, 65505, + 65508, 65517, 65519, 65521, 65523, 65525, 65527, 65529, 65531, 65533, + 65535, 0, 2, 15, 23, 53, 143, 260, 418, 698, + 988, 1353, 1812, 2411, 3144, 4015, 5143, 6401, 7611, 8999, + 10653, 12512, 14636, 16865, 19404, 22154, 24798, 27521, 30326, 33102, + 35790, 38603, 41415, 43968, 46771, 49435, 52152, 54715, 57143, 59481, + 61178, 62507, 63603, 64489, 64997, 65257, 65427, 65473, 65503, 65520, + 65529, 65531, 65533, 65535, 0, 3, 6, 9, 26, 32, + 44, 46, 64, 94, 111, 164, 205, 254, 327, 409, + 506, 608, 733, 885, 1093, 1292, 1482, 1742, 1993, 2329, + 2615, 3029, 3374, 3798, 4257, 4870, 5405, 5992, 6618, 7225, + 7816, 8418, 9051, 9761, 10532, 11380, 12113, 13010, 13788, 14594, + 15455, 16361, 17182, 18088, 18997, 20046, 20951, 21968, 22947, 24124, + 25296, 26547, 27712, 28775, 29807, 30835, 31709, 32469, 33201, 34014, + 34876, 35773, 36696, 37620, 38558, 39547, 40406, 41277, 42367, 43290, + 44445, 45443, 46510, 47684, 48973, 50157, 51187, 52242, 53209, 54083, + 55006, 55871, 56618, 57293, 57965, 58556, 59222, 59722, 60180, 60554, + 60902, 61250, 61554, 61837, 62100, 62372, 62631, 62856, 63078, 63324, + 63557, 63768, 63961, 64089, 64235, 64352, 64501, 64633, 64770, 64887, + 65001, 65059, 65121, 65188, 65246, 65302, 65346, 65390, 65428, 65463, + 65477, 65506, 65515, 65517, 65519, 65521, 65523, 65525, 65527, 65529, + 65531, 65533, 65535, 0, 2, 4, 109, 65332, 65531, 65533, + 65535, 0, 2, 4, 6, 8, 25, 1817, 63874, 65511, + 65527, 65529, 65531, 65533, 65535, 0, 2, 4, 907, 65014, + 65529, 65531, 65533, 65535, 0, 2, 4, 6, 8, 10, + 12, 132, 2743, 62708, 65430, 65525, 65527, 65529, 65531, 65533, + 65535, 0, 2, 4, 6, 8, 35, 3743, 61666, 65485, + 65531, 65533, 65535, 0, 2, 4, 6, 8, 10, 23, + 109, 683, 6905, 58417, 64911, 65398, 65497, 65518, 65525, 65527, + 65529, 65531, 65533, 65535, 0, 2, 4, 6, 53, 510, + 10209, 55212, 64573, 65441, 65522, 65529, 65531, 65533, 65535, 0, + 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, + 22, 32, 90, 266, 1037, 3349, 14468, 50488, 62394, 64685, + 65341, 65480, 65514, 65519, 65521, 65523, 65525, 65527, 65529, 65531, + 65533, 65535, 0, 2, 4, 6, 9, 16, 37, 106, + 296, 748, 1868, 5733, 18897, 45553, 60165, 63949, 64926, 65314, + 65441, 65508, 65524, 65529, 65531, 65533, 65535, 0, 2, 4, + 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, + 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, + 46, 48, 50, 83, 175, 344, 667, 1293, 2337, 4357, + 8033, 14988, 28600, 43244, 52011, 57042, 59980, 61779, 63065, 63869, + 64390, 64753, 64988, 65164, 65326, 65422, 65462, 65492, 65506, 65522, + 65524, 65526, 65531, 65533, 65535, 0, 2, 4, 6, 8, + 10, 12, 14, 16, 25, 39, 48, 55, 62, 65, + 85, 106, 139, 169, 194, 252, 323, 485, 688, 1074, + 1600, 2544, 3863, 5733, 8303, 11397, 15529, 20273, 25734, 31455, + 36853, 41891, 46410, 50306, 53702, 56503, 58673, 60479, 61880, 62989, + 63748, 64404, 64852, 65124, 65309, 65424, 65480, 65524, 65528, 65533, + 65535, 0, 2, 4, 6, 8, 10, 12, 14, 21, + 23, 25, 27, 29, 31, 39, 41, 43, 48, 60, + 72, 79, 106, 136, 166, 187, 224, 252, 323, 381, + 427, 478, 568, 660, 783, 912, 1046, 1175, 1365, 1567, + 1768, 2024, 2347, 2659, 3049, 3529, 4033, 4623, 5281, 5925, + 6726, 7526, 8417, 9468, 10783, 12141, 13571, 15222, 16916, 18659, + 20350, 22020, 23725, 25497, 27201, 29026, 30867, 32632, 34323, 36062, + 37829, 39466, 41144, 42654, 43981, 45343, 46579, 47759, 49013, 50171, + 51249, 52283, 53245, 54148, 54938, 55669, 56421, 57109, 57791, 58464, + 59092, 59674, 60105, 60653, 61083, 61407, 61757, 62095, 62388, 62649, + 62873, 63157, 63358, 63540, 63725, 63884, 64046, 64155, 64278, 64426, + 64548, 64654, 64806, 64906, 64994, 65077, 65137, 65215, 65277, 65324, + 65354, 65409, 65437, 65455, 65462, 65490, 65495, 65499, 65508, 65511, + 65513, 65515, 65517, 65519, 65521, 65523, 65525, 65527, 65529, 65531, + 65533, 65535}; + +const WebRtc_UWord16 WebRtcIsac_kQKltCdfShape[2059] = { + 0, 65535, 0, 65535, 0, 65535, 0, 65535, 0, 65535, + 0, 65535, 0, 65535, 0, 65535, 0, 65535, 0, 4, + 65535, 0, 8, 65514, 65535, 0, 29, 65481, 65535, 0, + 121, 65439, 65535, 0, 239, 65284, 65535, 0, 8, 779, + 64999, 65527, 65535, 0, 8, 888, 64693, 65522, 65535, 0, + 29, 2604, 62843, 65497, 65531, 65535, 0, 25, 176, 4576, + 61164, 65275, 65527, 65535, 0, 65535, 0, 65535, 0, 65535, + 0, 65535, 0, 4, 65535, 0, 65535, 0, 65535, 0, + 65535, 0, 65535, 0, 4, 65535, 0, 33, 65502, 65535, + 0, 54, 65481, 65535, 0, 251, 65309, 65535, 0, 611, + 65074, 65535, 0, 1273, 64292, 65527, 65535, 0, 4, 1809, + 63940, 65518, 65535, 0, 88, 4392, 60603, 65426, 65531, 65535, + 0, 25, 419, 7046, 57756, 64961, 65514, 65531, 65535, 0, + 65535, 0, 65535, 0, 65535, 0, 65535, 0, 4, 65531, + 65535, 0, 65535, 0, 8, 65531, 65535, 0, 4, 65527, + 65535, 0, 17, 65510, 65535, 0, 42, 65481, 65535, 0, + 197, 65342, 65531, 65535, 0, 385, 65154, 65535, 0, 1005, + 64522, 65535, 0, 8, 1985, 63469, 65533, 65535, 0, 38, + 3119, 61884, 65514, 65535, 0, 4, 6, 67, 4961, 60804, + 65472, 65535, 0, 17, 565, 9182, 56538, 65087, 65514, 65535, + 0, 8, 63, 327, 2118, 14490, 52774, 63839, 65376, 65522, + 65535, 0, 65535, 0, 65535, 0, 65535, 0, 65535, 0, + 17, 65522, 65535, 0, 59, 65489, 65535, 0, 50, 65522, + 65535, 0, 54, 65489, 65535, 0, 310, 65179, 65535, 0, + 615, 64836, 65535, 0, 4, 1503, 63965, 65535, 0, 2780, + 63383, 65535, 0, 21, 3919, 61051, 65527, 65535, 0, 84, + 6674, 59929, 65435, 65535, 0, 4, 255, 7976, 55784, 65150, + 65518, 65531, 65535, 0, 4, 8, 582, 10726, 53465, 64949, + 65518, 65535, 0, 29, 339, 3006, 17555, 49517, 62956, 65200, + 65497, 65531, 65535, 0, 2, 33, 138, 565, 2324, 7670, + 22089, 45966, 58949, 63479, 64966, 65380, 65518, 65535, 0, 65535, + 0, 65535, 0, 2, 65533, 65535, 0, 46, 65514, 65535, + 0, 414, 65091, 65535, 0, 540, 64911, 65535, 0, 419, + 65162, 65535, 0, 976, 64790, 65535, 0, 2977, 62495, 65531, + 65535, 0, 4, 3852, 61034, 65527, 65535, 0, 4, 29, + 6021, 60243, 65468, 65535, 0, 84, 6711, 58066, 65418, 65535, + 0, 13, 281, 9550, 54917, 65125, 65506, 65535, 0, 2, + 63, 984, 12108, 52644, 64342, 65435, 65527, 65535, 0, 29, + 251, 2014, 14871, 47553, 62881, 65229, 65518, 65535, 0, 13, + 142, 749, 4220, 18497, 45200, 60913, 64823, 65426, 65527, 65535, + 0, 13, 71, 264, 1176, 3789, 10500, 24480, 43488, 56324, + 62315, 64493, 65242, 65464, 65514, 65522, 65531, 65535, 0, 4, + 13, 38, 109, 205, 448, 850, 1708, 3429, 6276, 11371, + 19221, 29734, 40955, 49391, 55411, 59460, 62102, 63793, 64656, 65150, + 65401, 65485, 65522, 65531, 65535, 0, 65535, 0, 2, 65533, + 65535, 0, 1160, 65476, 65535, 0, 2, 6640, 64763, 65533, + 65535, 0, 2, 38, 9923, 61009, 65527, 65535, 0, 2, + 4949, 63092, 65533, 65535, 0, 2, 3090, 63398, 65533, 65535, + 0, 2, 2520, 58744, 65510, 65535, 0, 2, 13, 544, + 8784, 51403, 65148, 65533, 65535, 0, 2, 25, 1017, 10412, + 43550, 63651, 65489, 65527, 65535, 0, 2, 4, 29, 783, + 13377, 52462, 64524, 65495, 65533, 65535, 0, 2, 4, 6, + 100, 1817, 18451, 52590, 63559, 65376, 65531, 65535, 0, 2, + 4, 6, 46, 385, 2562, 11225, 37416, 60488, 65026, 65487, + 65529, 65533, 65535, 0, 2, 4, 6, 8, 10, 12, + 42, 222, 971, 5221, 19811, 45048, 60312, 64486, 65294, 65474, + 65525, 65529, 65533, 65535, 0, 2, 4, 8, 71, 167, + 666, 2533, 7875, 19622, 38082, 54359, 62108, 64633, 65290, 65495, + 65529, 65533, 65535, 0, 2, 4, 6, 8, 10, 13, + 109, 586, 1930, 4949, 11600, 22641, 36125, 48312, 56899, 61495, + 63927, 64932, 65389, 65489, 65518, 65531, 65533, 65535, 0, 4, + 6, 8, 67, 209, 712, 1838, 4195, 8432, 14432, 22834, + 31723, 40523, 48139, 53929, 57865, 60657, 62403, 63584, 64363, 64907, + 65167, 65372, 65472, 65514, 65535, 0, 2, 4, 13, 25, + 42, 46, 50, 75, 113, 147, 281, 448, 657, 909, + 1185, 1591, 1976, 2600, 3676, 5317, 7398, 9914, 12941, 16169, + 19477, 22885, 26464, 29851, 33360, 37228, 41139, 44802, 48654, 52058, + 55181, 57676, 59581, 61022, 62190, 63107, 63676, 64199, 64547, 64924, + 65158, 65313, 65430, 65481, 65518, 65535, 0, 65535, 0, 65535, + 0, 65535, 0, 65535, 0, 65533, 65535, 0, 65535, 0, + 65535, 0, 65535, 0, 65533, 65535, 0, 2, 65535, 0, + 2, 65533, 65535, 0, 2, 65533, 65535, 0, 2, 65533, + 65535, 0, 2, 4, 65533, 65535, 0, 2, 65533, 65535, + 0, 2, 4, 65531, 65533, 65535, 0, 2, 4, 65531, + 65533, 65535, 0, 2, 4, 6, 65524, 65533, 65535, 0, + 65535, 0, 65535, 0, 65535, 0, 65535, 0, 65535, 0, + 65535, 0, 65535, 0, 65535, 0, 65533, 65535, 0, 65533, + 65535, 0, 2, 65533, 65535, 0, 2, 65533, 65535, 0, + 2, 65533, 65535, 0, 2, 4, 65532, 65535, 0, 6, + 65523, 65535, 0, 2, 15, 65530, 65533, 65535, 0, 2, + 35, 65493, 65531, 65533, 65535, 0, 2, 4, 158, 65382, + 65531, 65533, 65535, 0, 65535, 0, 65535, 0, 65535, 0, + 65535, 0, 65535, 0, 65535, 0, 2, 65535, 0, 2, + 65533, 65535, 0, 2, 65533, 65535, 0, 2, 65533, 65535, + 0, 2, 65533, 65535, 0, 9, 65512, 65535, 0, 2, + 12, 65529, 65535, 0, 2, 73, 65434, 65533, 65535, 0, + 2, 240, 65343, 65533, 65535, 0, 2, 476, 65017, 65531, + 65533, 65535, 0, 2, 4, 1046, 64686, 65531, 65533, 65535, + 0, 2, 4, 6, 8, 1870, 63898, 65529, 65531, 65533, + 65535, 0, 65535, 0, 65535, 0, 65535, 0, 65533, 65535, + 0, 2, 65533, 65535, 0, 2, 65533, 65535, 0, 2, + 65532, 65535, 0, 6, 65533, 65535, 0, 6, 65523, 65535, + 0, 2, 65532, 65535, 0, 137, 65439, 65535, 0, 576, + 64899, 65533, 65535, 0, 2, 289, 65299, 65533, 65535, 0, + 2, 4, 6, 880, 64134, 65531, 65533, 65535, 0, 2, + 4, 1853, 63347, 65533, 65535, 0, 2, 6, 2516, 61762, + 65529, 65531, 65533, 65535, 0, 2, 4, 9, 3980, 61380, + 65503, 65529, 65531, 65533, 65535, 0, 2, 4, 6, 8, + 10, 12, 61, 6393, 59859, 65466, 65527, 65529, 65531, 65533, + 65535, 0, 65535, 0, 65535, 0, 65535, 0, 2, 65532, + 65535, 0, 3, 65529, 65535, 0, 2, 65529, 65535, 0, + 61, 65453, 65535, 0, 234, 65313, 65535, 0, 503, 65138, + 65535, 0, 155, 65402, 65533, 65535, 0, 2, 1058, 64554, + 65533, 65535, 0, 2, 4, 3138, 62109, 65531, 65533, 65535, + 0, 2, 4, 2031, 63339, 65531, 65533, 65535, 0, 2, + 4, 6, 9, 4155, 60778, 65523, 65529, 65531, 65533, 65535, + 0, 2, 4, 41, 6189, 59269, 65490, 65531, 65533, 65535, + 0, 2, 4, 6, 210, 8789, 57043, 65400, 65528, 65531, + 65533, 65535, 0, 2, 4, 6, 8, 26, 453, 10086, + 55499, 64948, 65483, 65524, 65527, 65529, 65531, 65533, 65535, 0, + 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, + 114, 1014, 11202, 52670, 64226, 65356, 65503, 65514, 65523, 65525, + 65527, 65529, 65531, 65533, 65535, 0, 65533, 65535, 0, 15, + 65301, 65535, 0, 152, 64807, 65535, 0, 2, 3328, 63308, + 65535, 0, 2, 4050, 59730, 65533, 65535, 0, 2, 164, + 10564, 61894, 65529, 65535, 0, 15, 6712, 59831, 65076, 65532, + 65535, 0, 32, 7712, 57449, 65459, 65535, 0, 2, 210, + 7849, 53110, 65021, 65523, 65535, 0, 2, 12, 1081, 13883, + 48262, 62870, 65477, 65535, 0, 2, 88, 847, 6145, 37852, + 62012, 65454, 65533, 65535, 0, 9, 47, 207, 1823, 14522, + 45521, 61069, 64891, 65481, 65528, 65531, 65533, 65535, 0, 2, + 9, 488, 2881, 12758, 38703, 58412, 64420, 65410, 65533, 65535, + 0, 2, 4, 6, 61, 333, 1891, 6486, 19720, 43188, + 57547, 62472, 64796, 65421, 65497, 65523, 65529, 65531, 65533, 65535, + 0, 2, 4, 6, 8, 10, 12, 29, 117, 447, + 1528, 6138, 21242, 43133, 56495, 62432, 64746, 65362, 65500, 65529, + 65531, 65533, 65535, 0, 2, 18, 105, 301, 760, 1490, + 3472, 7568, 15002, 26424, 40330, 53029, 60048, 62964, 64274, 64890, + 65337, 65445, 65489, 65513, 65527, 65530, 65533, 65535, 0, 2, + 4, 6, 41, 102, 409, 853, 2031, 4316, 7302, 11328, + 16869, 24825, 34926, 43481, 50877, 56126, 59874, 62103, 63281, 63857, + 64166, 64675, 65382, 65522, 65531, 65533, 65535, 0, 2, 4, + 6, 8, 10, 12, 14, 16, 18, 29, 38, 53, + 58, 96, 181, 503, 1183, 2849, 5590, 8600, 11379, 13942, + 16478, 19453, 22638, 26039, 29411, 32921, 37596, 41433, 44998, 48560, + 51979, 55106, 57666, 59892, 61485, 62616, 63484, 64018, 64375, 64685, + 64924, 65076, 65278, 65395, 65471, 65509, 65529, 65535, 0, 65535, + 0, 65535, 0, 65535, 0, 65535, 0, 65535, 0, 65535, + 0, 65535, 0, 65535, 0, 2, 65533, 65535, 0, 2, + 65533, 65535, 0, 2, 65533, 65535, 0, 2, 65533, 65535, + 0, 2, 65533, 65535, 0, 2, 65533, 65535, 0, 7, + 65519, 65535, 0, 2, 14, 65491, 65533, 65535, 0, 2, + 81, 65427, 65531, 65533, 65535, 0, 2, 4, 312, 65293, + 65528, 65533, 65535, 0, 65535, 0, 65535, 0, 65535, 0, + 65535, 0, 65535, 0, 65535, 0, 65535, 0, 65535, 0, + 2, 65533, 65535, 0, 2, 65533, 65535, 0, 2, 65533, + 65535, 0, 5, 65523, 65535, 0, 2, 65533, 65535, 0, + 7, 65526, 65535, 0, 46, 65464, 65533, 65535, 0, 2, + 120, 65309, 65533, 65535, 0, 2, 5, 362, 65097, 65533, + 65535, 0, 2, 18, 1164, 64785, 65528, 65531, 65533, 65535, + 0, 65535, 0, 65535, 0, 65535, 0, 65533, 65535, 0, + 65535, 0, 65533, 65535, 0, 2, 65533, 65535, 0, 2, + 65533, 65535, 0, 2, 65533, 65535, 0, 2, 65530, 65535, + 0, 2, 65523, 65535, 0, 69, 65477, 65535, 0, 141, + 65459, 65535, 0, 194, 65325, 65533, 65535, 0, 2, 543, + 64912, 65533, 65535, 0, 5, 1270, 64301, 65529, 65531, 65533, + 65535, 0, 2, 4, 12, 2055, 63538, 65508, 65531, 65533, + 65535, 0, 2, 7, 102, 3775, 61970, 65429, 65526, 65528, + 65533, 65535, 0, 65535, 0, 65535, 0, 65535, 0, 2, + 65533, 65535, 0, 2, 65535, 0, 9, 65533, 65535, 0, + 25, 65512, 65535, 0, 2, 65533, 65535, 0, 44, 65480, + 65535, 0, 48, 65475, 65535, 0, 162, 65373, 65535, 0, + 637, 64806, 65533, 65535, 0, 2, 935, 64445, 65533, 65535, + 0, 2, 4, 1662, 64083, 65533, 65535, 0, 2, 12, + 3036, 62469, 65521, 65533, 65535, 0, 2, 120, 5405, 60468, + 65469, 65531, 65533, 65535, 0, 2, 4, 18, 254, 6663, + 58999, 65272, 65528, 65533, 65535, 0, 2, 4, 9, 12, + 67, 591, 8981, 56781, 64564, 65365, 65508, 65524, 65526, 65529, + 65531, 65533, 65535, 0, 65535, 0, 65535, 0, 2, 65533, + 65535, 0, 9, 65526, 65535, 0, 14, 65503, 65535, 0, + 127, 65390, 65535, 0, 517, 64990, 65535, 0, 178, 65330, + 65535, 0, 2, 1055, 64533, 65533, 65535, 0, 2, 1558, + 63942, 65533, 65535, 0, 2, 2205, 63173, 65533, 65535, 0, + 25, 4493, 60862, 65505, 65533, 65535, 0, 2, 48, 5890, + 59442, 65482, 65533, 65535, 0, 2, 4, 127, 7532, 58191, + 65394, 65533, 65535, 0, 2, 5, 32, 550, 10388, 54924, + 65046, 65510, 65531, 65533, 65535, 0, 2, 4, 30, 150, + 1685, 14340, 51375, 63619, 65288, 65503, 65528, 65533, 65535, 0, + 2, 4, 6, 8, 28, 97, 473, 2692, 15407, 50020, + 62880, 65064, 65445, 65508, 65531, 65533, 65535, 0, 2, 4, + 12, 32, 79, 150, 372, 907, 2184, 5868, 18207, 45431, + 59856, 64031, 65096, 65401, 65481, 65507, 65521, 65523, 65525, 65527, + 65529, 65531, 65533, 65535, 0, 65533, 65535, 0, 182, 65491, + 65535, 0, 877, 64286, 65535, 0, 9, 2708, 63612, 65533, + 65535, 0, 2, 6038, 59532, 65535, 0, 2, 92, 5500, + 60539, 65533, 65535, 0, 268, 8908, 56512, 65385, 65535, 0, + 129, 13110, 52742, 65036, 65535, 0, 2, 806, 14003, 51929, + 64732, 65523, 65535, 0, 7, 92, 2667, 18159, 47678, 62610, + 65355, 65535, 0, 32, 1836, 19676, 48237, 61677, 64960, 65526, + 65535, 0, 21, 159, 967, 5668, 22782, 44709, 58317, 64020, + 65406, 65528, 65535, 0, 7, 162, 1838, 8328, 23929, 43014, + 56394, 63374, 65216, 65484, 65521, 65535, 0, 2, 4, 6, + 28, 268, 1120, 3613, 10688, 24185, 40989, 54917, 61684, 64510, + 65403, 65530, 65535, 0, 2, 16, 44, 139, 492, 1739, + 5313, 13558, 26766, 41566, 52446, 58937, 62815, 64480, 65201, 65454, + 65524, 65533, 65535, 0, 7, 25, 76, 263, 612, 1466, + 3325, 6832, 12366, 20152, 29466, 39255, 47360, 53506, 57740, 60726, + 62845, 64131, 64882, 65260, 65459, 65521, 65528, 65530, 65535, 0, + 2, 4, 14, 48, 136, 312, 653, 1240, 2369, 4327, + 7028, 10759, 15449, 21235, 28027, 35386, 42938, 49562, 54990, 59119, + 62086, 63916, 64863, 65249, 65445, 65493, 65523, 65535, 0, 2, + 4, 6, 8, 10, 12, 21, 83, 208, 409, 723, + 1152, 1868, 2951, 4463, 6460, 8979, 11831, 15195, 18863, 22657, + 26762, 30881, 34963, 39098, 43054, 47069, 50620, 53871, 56821, 59386, + 61340, 62670, 63512, 64023, 64429, 64750, 64944, 65126, 65279, 65366, + 65413, 65445, 65473, 65505, 65510, 65521, 65528, 65530, 65535}; + +/* pointers to cdf tables for quantizer indices */ +const WebRtc_UWord16 *WebRtcIsac_kQKltCdfPtrGain[3][12] = { +{WebRtcIsac_kQKltCdfGain +0 +0, WebRtcIsac_kQKltCdfGain +0 +8, WebRtcIsac_kQKltCdfGain +0 +22, WebRtcIsac_kQKltCdfGain +0 +32, WebRtcIsac_kQKltCdfGain +0 +48, WebRtcIsac_kQKltCdfGain +0 +60, WebRtcIsac_kQKltCdfGain +0 +81, WebRtcIsac_kQKltCdfGain +0 +95, WebRtcIsac_kQKltCdfGain +0 +128, WebRtcIsac_kQKltCdfGain +0 +152, +WebRtcIsac_kQKltCdfGain +0 +210, WebRtcIsac_kQKltCdfGain +0 +264}, +{WebRtcIsac_kQKltCdfGain +404 +0, WebRtcIsac_kQKltCdfGain +404 +8, WebRtcIsac_kQKltCdfGain +404 +21, WebRtcIsac_kQKltCdfGain +404 +30, WebRtcIsac_kQKltCdfGain +404 +46, WebRtcIsac_kQKltCdfGain +404 +58, WebRtcIsac_kQKltCdfGain +404 +79, WebRtcIsac_kQKltCdfGain +404 +93, WebRtcIsac_kQKltCdfGain +404 +125, WebRtcIsac_kQKltCdfGain +404 +149, +WebRtcIsac_kQKltCdfGain +404 +207, WebRtcIsac_kQKltCdfGain +404 +260}, +{WebRtcIsac_kQKltCdfGain +803 +0, WebRtcIsac_kQKltCdfGain +803 +8, WebRtcIsac_kQKltCdfGain +803 +22, WebRtcIsac_kQKltCdfGain +803 +31, WebRtcIsac_kQKltCdfGain +803 +48, WebRtcIsac_kQKltCdfGain +803 +60, WebRtcIsac_kQKltCdfGain +803 +81, WebRtcIsac_kQKltCdfGain +803 +96, WebRtcIsac_kQKltCdfGain +803 +129, WebRtcIsac_kQKltCdfGain +803 +154, +WebRtcIsac_kQKltCdfGain +803 +212, WebRtcIsac_kQKltCdfGain +803 +268}}; + +const WebRtc_UWord16 *WebRtcIsac_kQKltCdfPtrShape[3][108] = { +{WebRtcIsac_kQKltCdfShape +0 +0, WebRtcIsac_kQKltCdfShape +0 +2, WebRtcIsac_kQKltCdfShape +0 +4, WebRtcIsac_kQKltCdfShape +0 +6, WebRtcIsac_kQKltCdfShape +0 +8, WebRtcIsac_kQKltCdfShape +0 +10, WebRtcIsac_kQKltCdfShape +0 +12, WebRtcIsac_kQKltCdfShape +0 +14, WebRtcIsac_kQKltCdfShape +0 +16, WebRtcIsac_kQKltCdfShape +0 +18, +WebRtcIsac_kQKltCdfShape +0 +21, WebRtcIsac_kQKltCdfShape +0 +25, WebRtcIsac_kQKltCdfShape +0 +29, WebRtcIsac_kQKltCdfShape +0 +33, WebRtcIsac_kQKltCdfShape +0 +37, WebRtcIsac_kQKltCdfShape +0 +43, WebRtcIsac_kQKltCdfShape +0 +49, WebRtcIsac_kQKltCdfShape +0 +56, WebRtcIsac_kQKltCdfShape +0 +64, WebRtcIsac_kQKltCdfShape +0 +66, +WebRtcIsac_kQKltCdfShape +0 +68, WebRtcIsac_kQKltCdfShape +0 +70, WebRtcIsac_kQKltCdfShape +0 +72, WebRtcIsac_kQKltCdfShape +0 +75, WebRtcIsac_kQKltCdfShape +0 +77, WebRtcIsac_kQKltCdfShape +0 +79, WebRtcIsac_kQKltCdfShape +0 +81, WebRtcIsac_kQKltCdfShape +0 +83, WebRtcIsac_kQKltCdfShape +0 +86, WebRtcIsac_kQKltCdfShape +0 +90, +WebRtcIsac_kQKltCdfShape +0 +94, WebRtcIsac_kQKltCdfShape +0 +98, WebRtcIsac_kQKltCdfShape +0 +102, WebRtcIsac_kQKltCdfShape +0 +107, WebRtcIsac_kQKltCdfShape +0 +113, WebRtcIsac_kQKltCdfShape +0 +120, WebRtcIsac_kQKltCdfShape +0 +129, WebRtcIsac_kQKltCdfShape +0 +131, WebRtcIsac_kQKltCdfShape +0 +133, WebRtcIsac_kQKltCdfShape +0 +135, +WebRtcIsac_kQKltCdfShape +0 +137, WebRtcIsac_kQKltCdfShape +0 +141, WebRtcIsac_kQKltCdfShape +0 +143, WebRtcIsac_kQKltCdfShape +0 +147, WebRtcIsac_kQKltCdfShape +0 +151, WebRtcIsac_kQKltCdfShape +0 +155, WebRtcIsac_kQKltCdfShape +0 +159, WebRtcIsac_kQKltCdfShape +0 +164, WebRtcIsac_kQKltCdfShape +0 +168, WebRtcIsac_kQKltCdfShape +0 +172, +WebRtcIsac_kQKltCdfShape +0 +178, WebRtcIsac_kQKltCdfShape +0 +184, WebRtcIsac_kQKltCdfShape +0 +192, WebRtcIsac_kQKltCdfShape +0 +200, WebRtcIsac_kQKltCdfShape +0 +211, WebRtcIsac_kQKltCdfShape +0 +213, WebRtcIsac_kQKltCdfShape +0 +215, WebRtcIsac_kQKltCdfShape +0 +217, WebRtcIsac_kQKltCdfShape +0 +219, WebRtcIsac_kQKltCdfShape +0 +223, +WebRtcIsac_kQKltCdfShape +0 +227, WebRtcIsac_kQKltCdfShape +0 +231, WebRtcIsac_kQKltCdfShape +0 +235, WebRtcIsac_kQKltCdfShape +0 +239, WebRtcIsac_kQKltCdfShape +0 +243, WebRtcIsac_kQKltCdfShape +0 +248, WebRtcIsac_kQKltCdfShape +0 +252, WebRtcIsac_kQKltCdfShape +0 +258, WebRtcIsac_kQKltCdfShape +0 +264, WebRtcIsac_kQKltCdfShape +0 +273, +WebRtcIsac_kQKltCdfShape +0 +282, WebRtcIsac_kQKltCdfShape +0 +293, WebRtcIsac_kQKltCdfShape +0 +308, WebRtcIsac_kQKltCdfShape +0 +310, WebRtcIsac_kQKltCdfShape +0 +312, WebRtcIsac_kQKltCdfShape +0 +316, WebRtcIsac_kQKltCdfShape +0 +320, WebRtcIsac_kQKltCdfShape +0 +324, WebRtcIsac_kQKltCdfShape +0 +328, WebRtcIsac_kQKltCdfShape +0 +332, +WebRtcIsac_kQKltCdfShape +0 +336, WebRtcIsac_kQKltCdfShape +0 +341, WebRtcIsac_kQKltCdfShape +0 +347, WebRtcIsac_kQKltCdfShape +0 +354, WebRtcIsac_kQKltCdfShape +0 +360, WebRtcIsac_kQKltCdfShape +0 +368, WebRtcIsac_kQKltCdfShape +0 +378, WebRtcIsac_kQKltCdfShape +0 +388, WebRtcIsac_kQKltCdfShape +0 +400, WebRtcIsac_kQKltCdfShape +0 +418, +WebRtcIsac_kQKltCdfShape +0 +445, WebRtcIsac_kQKltCdfShape +0 +447, WebRtcIsac_kQKltCdfShape +0 +451, WebRtcIsac_kQKltCdfShape +0 +455, WebRtcIsac_kQKltCdfShape +0 +461, WebRtcIsac_kQKltCdfShape +0 +468, WebRtcIsac_kQKltCdfShape +0 +474, WebRtcIsac_kQKltCdfShape +0 +480, WebRtcIsac_kQKltCdfShape +0 +486, WebRtcIsac_kQKltCdfShape +0 +495, +WebRtcIsac_kQKltCdfShape +0 +505, WebRtcIsac_kQKltCdfShape +0 +516, WebRtcIsac_kQKltCdfShape +0 +528, WebRtcIsac_kQKltCdfShape +0 +543, WebRtcIsac_kQKltCdfShape +0 +564, WebRtcIsac_kQKltCdfShape +0 +583, WebRtcIsac_kQKltCdfShape +0 +608, WebRtcIsac_kQKltCdfShape +0 +635}, +{WebRtcIsac_kQKltCdfShape +686 +0, WebRtcIsac_kQKltCdfShape +686 +2, WebRtcIsac_kQKltCdfShape +686 +4, WebRtcIsac_kQKltCdfShape +686 +6, WebRtcIsac_kQKltCdfShape +686 +8, WebRtcIsac_kQKltCdfShape +686 +11, WebRtcIsac_kQKltCdfShape +686 +13, WebRtcIsac_kQKltCdfShape +686 +15, WebRtcIsac_kQKltCdfShape +686 +17, WebRtcIsac_kQKltCdfShape +686 +20, +WebRtcIsac_kQKltCdfShape +686 +23, WebRtcIsac_kQKltCdfShape +686 +27, WebRtcIsac_kQKltCdfShape +686 +31, WebRtcIsac_kQKltCdfShape +686 +35, WebRtcIsac_kQKltCdfShape +686 +40, WebRtcIsac_kQKltCdfShape +686 +44, WebRtcIsac_kQKltCdfShape +686 +50, WebRtcIsac_kQKltCdfShape +686 +56, WebRtcIsac_kQKltCdfShape +686 +63, WebRtcIsac_kQKltCdfShape +686 +65, +WebRtcIsac_kQKltCdfShape +686 +67, WebRtcIsac_kQKltCdfShape +686 +69, WebRtcIsac_kQKltCdfShape +686 +71, WebRtcIsac_kQKltCdfShape +686 +73, WebRtcIsac_kQKltCdfShape +686 +75, WebRtcIsac_kQKltCdfShape +686 +77, WebRtcIsac_kQKltCdfShape +686 +79, WebRtcIsac_kQKltCdfShape +686 +82, WebRtcIsac_kQKltCdfShape +686 +85, WebRtcIsac_kQKltCdfShape +686 +89, +WebRtcIsac_kQKltCdfShape +686 +93, WebRtcIsac_kQKltCdfShape +686 +97, WebRtcIsac_kQKltCdfShape +686 +102, WebRtcIsac_kQKltCdfShape +686 +106, WebRtcIsac_kQKltCdfShape +686 +112, WebRtcIsac_kQKltCdfShape +686 +119, WebRtcIsac_kQKltCdfShape +686 +127, WebRtcIsac_kQKltCdfShape +686 +129, WebRtcIsac_kQKltCdfShape +686 +131, WebRtcIsac_kQKltCdfShape +686 +133, +WebRtcIsac_kQKltCdfShape +686 +135, WebRtcIsac_kQKltCdfShape +686 +137, WebRtcIsac_kQKltCdfShape +686 +139, WebRtcIsac_kQKltCdfShape +686 +142, WebRtcIsac_kQKltCdfShape +686 +146, WebRtcIsac_kQKltCdfShape +686 +150, WebRtcIsac_kQKltCdfShape +686 +154, WebRtcIsac_kQKltCdfShape +686 +158, WebRtcIsac_kQKltCdfShape +686 +162, WebRtcIsac_kQKltCdfShape +686 +167, +WebRtcIsac_kQKltCdfShape +686 +173, WebRtcIsac_kQKltCdfShape +686 +179, WebRtcIsac_kQKltCdfShape +686 +186, WebRtcIsac_kQKltCdfShape +686 +194, WebRtcIsac_kQKltCdfShape +686 +205, WebRtcIsac_kQKltCdfShape +686 +207, WebRtcIsac_kQKltCdfShape +686 +209, WebRtcIsac_kQKltCdfShape +686 +211, WebRtcIsac_kQKltCdfShape +686 +214, WebRtcIsac_kQKltCdfShape +686 +218, +WebRtcIsac_kQKltCdfShape +686 +222, WebRtcIsac_kQKltCdfShape +686 +226, WebRtcIsac_kQKltCdfShape +686 +230, WebRtcIsac_kQKltCdfShape +686 +234, WebRtcIsac_kQKltCdfShape +686 +238, WebRtcIsac_kQKltCdfShape +686 +242, WebRtcIsac_kQKltCdfShape +686 +247, WebRtcIsac_kQKltCdfShape +686 +253, WebRtcIsac_kQKltCdfShape +686 +262, WebRtcIsac_kQKltCdfShape +686 +269, +WebRtcIsac_kQKltCdfShape +686 +278, WebRtcIsac_kQKltCdfShape +686 +289, WebRtcIsac_kQKltCdfShape +686 +305, WebRtcIsac_kQKltCdfShape +686 +307, WebRtcIsac_kQKltCdfShape +686 +309, WebRtcIsac_kQKltCdfShape +686 +311, WebRtcIsac_kQKltCdfShape +686 +315, WebRtcIsac_kQKltCdfShape +686 +319, WebRtcIsac_kQKltCdfShape +686 +323, WebRtcIsac_kQKltCdfShape +686 +327, +WebRtcIsac_kQKltCdfShape +686 +331, WebRtcIsac_kQKltCdfShape +686 +335, WebRtcIsac_kQKltCdfShape +686 +340, WebRtcIsac_kQKltCdfShape +686 +346, WebRtcIsac_kQKltCdfShape +686 +354, WebRtcIsac_kQKltCdfShape +686 +362, WebRtcIsac_kQKltCdfShape +686 +374, WebRtcIsac_kQKltCdfShape +686 +384, WebRtcIsac_kQKltCdfShape +686 +396, WebRtcIsac_kQKltCdfShape +686 +413, +WebRtcIsac_kQKltCdfShape +686 +439, WebRtcIsac_kQKltCdfShape +686 +442, WebRtcIsac_kQKltCdfShape +686 +446, WebRtcIsac_kQKltCdfShape +686 +450, WebRtcIsac_kQKltCdfShape +686 +455, WebRtcIsac_kQKltCdfShape +686 +461, WebRtcIsac_kQKltCdfShape +686 +468, WebRtcIsac_kQKltCdfShape +686 +475, WebRtcIsac_kQKltCdfShape +686 +481, WebRtcIsac_kQKltCdfShape +686 +489, +WebRtcIsac_kQKltCdfShape +686 +498, WebRtcIsac_kQKltCdfShape +686 +508, WebRtcIsac_kQKltCdfShape +686 +522, WebRtcIsac_kQKltCdfShape +686 +534, WebRtcIsac_kQKltCdfShape +686 +554, WebRtcIsac_kQKltCdfShape +686 +577, WebRtcIsac_kQKltCdfShape +686 +602, WebRtcIsac_kQKltCdfShape +686 +631}, +{WebRtcIsac_kQKltCdfShape +1368 +0, WebRtcIsac_kQKltCdfShape +1368 +2, WebRtcIsac_kQKltCdfShape +1368 +4, WebRtcIsac_kQKltCdfShape +1368 +6, WebRtcIsac_kQKltCdfShape +1368 +8, WebRtcIsac_kQKltCdfShape +1368 +10, WebRtcIsac_kQKltCdfShape +1368 +12, WebRtcIsac_kQKltCdfShape +1368 +14, WebRtcIsac_kQKltCdfShape +1368 +16, WebRtcIsac_kQKltCdfShape +1368 +20, +WebRtcIsac_kQKltCdfShape +1368 +24, WebRtcIsac_kQKltCdfShape +1368 +28, WebRtcIsac_kQKltCdfShape +1368 +32, WebRtcIsac_kQKltCdfShape +1368 +36, WebRtcIsac_kQKltCdfShape +1368 +40, WebRtcIsac_kQKltCdfShape +1368 +44, WebRtcIsac_kQKltCdfShape +1368 +50, WebRtcIsac_kQKltCdfShape +1368 +57, WebRtcIsac_kQKltCdfShape +1368 +65, WebRtcIsac_kQKltCdfShape +1368 +67, +WebRtcIsac_kQKltCdfShape +1368 +69, WebRtcIsac_kQKltCdfShape +1368 +71, WebRtcIsac_kQKltCdfShape +1368 +73, WebRtcIsac_kQKltCdfShape +1368 +75, WebRtcIsac_kQKltCdfShape +1368 +77, WebRtcIsac_kQKltCdfShape +1368 +79, WebRtcIsac_kQKltCdfShape +1368 +81, WebRtcIsac_kQKltCdfShape +1368 +85, WebRtcIsac_kQKltCdfShape +1368 +89, WebRtcIsac_kQKltCdfShape +1368 +93, +WebRtcIsac_kQKltCdfShape +1368 +97, WebRtcIsac_kQKltCdfShape +1368 +101, WebRtcIsac_kQKltCdfShape +1368 +105, WebRtcIsac_kQKltCdfShape +1368 +110, WebRtcIsac_kQKltCdfShape +1368 +116, WebRtcIsac_kQKltCdfShape +1368 +123, WebRtcIsac_kQKltCdfShape +1368 +132, WebRtcIsac_kQKltCdfShape +1368 +134, WebRtcIsac_kQKltCdfShape +1368 +136, WebRtcIsac_kQKltCdfShape +1368 +138, +WebRtcIsac_kQKltCdfShape +1368 +141, WebRtcIsac_kQKltCdfShape +1368 +143, WebRtcIsac_kQKltCdfShape +1368 +146, WebRtcIsac_kQKltCdfShape +1368 +150, WebRtcIsac_kQKltCdfShape +1368 +154, WebRtcIsac_kQKltCdfShape +1368 +158, WebRtcIsac_kQKltCdfShape +1368 +162, WebRtcIsac_kQKltCdfShape +1368 +166, WebRtcIsac_kQKltCdfShape +1368 +170, WebRtcIsac_kQKltCdfShape +1368 +174, +WebRtcIsac_kQKltCdfShape +1368 +179, WebRtcIsac_kQKltCdfShape +1368 +185, WebRtcIsac_kQKltCdfShape +1368 +193, WebRtcIsac_kQKltCdfShape +1368 +203, WebRtcIsac_kQKltCdfShape +1368 +214, WebRtcIsac_kQKltCdfShape +1368 +216, WebRtcIsac_kQKltCdfShape +1368 +218, WebRtcIsac_kQKltCdfShape +1368 +220, WebRtcIsac_kQKltCdfShape +1368 +224, WebRtcIsac_kQKltCdfShape +1368 +227, +WebRtcIsac_kQKltCdfShape +1368 +231, WebRtcIsac_kQKltCdfShape +1368 +235, WebRtcIsac_kQKltCdfShape +1368 +239, WebRtcIsac_kQKltCdfShape +1368 +243, WebRtcIsac_kQKltCdfShape +1368 +247, WebRtcIsac_kQKltCdfShape +1368 +251, WebRtcIsac_kQKltCdfShape +1368 +256, WebRtcIsac_kQKltCdfShape +1368 +262, WebRtcIsac_kQKltCdfShape +1368 +269, WebRtcIsac_kQKltCdfShape +1368 +277, +WebRtcIsac_kQKltCdfShape +1368 +286, WebRtcIsac_kQKltCdfShape +1368 +297, WebRtcIsac_kQKltCdfShape +1368 +315, WebRtcIsac_kQKltCdfShape +1368 +317, WebRtcIsac_kQKltCdfShape +1368 +319, WebRtcIsac_kQKltCdfShape +1368 +323, WebRtcIsac_kQKltCdfShape +1368 +327, WebRtcIsac_kQKltCdfShape +1368 +331, WebRtcIsac_kQKltCdfShape +1368 +335, WebRtcIsac_kQKltCdfShape +1368 +339, +WebRtcIsac_kQKltCdfShape +1368 +343, WebRtcIsac_kQKltCdfShape +1368 +349, WebRtcIsac_kQKltCdfShape +1368 +355, WebRtcIsac_kQKltCdfShape +1368 +361, WebRtcIsac_kQKltCdfShape +1368 +368, WebRtcIsac_kQKltCdfShape +1368 +376, WebRtcIsac_kQKltCdfShape +1368 +385, WebRtcIsac_kQKltCdfShape +1368 +397, WebRtcIsac_kQKltCdfShape +1368 +411, WebRtcIsac_kQKltCdfShape +1368 +429, +WebRtcIsac_kQKltCdfShape +1368 +456, WebRtcIsac_kQKltCdfShape +1368 +459, WebRtcIsac_kQKltCdfShape +1368 +463, WebRtcIsac_kQKltCdfShape +1368 +467, WebRtcIsac_kQKltCdfShape +1368 +473, WebRtcIsac_kQKltCdfShape +1368 +478, WebRtcIsac_kQKltCdfShape +1368 +485, WebRtcIsac_kQKltCdfShape +1368 +491, WebRtcIsac_kQKltCdfShape +1368 +497, WebRtcIsac_kQKltCdfShape +1368 +505, +WebRtcIsac_kQKltCdfShape +1368 +514, WebRtcIsac_kQKltCdfShape +1368 +523, WebRtcIsac_kQKltCdfShape +1368 +535, WebRtcIsac_kQKltCdfShape +1368 +548, WebRtcIsac_kQKltCdfShape +1368 +565, WebRtcIsac_kQKltCdfShape +1368 +585, WebRtcIsac_kQKltCdfShape +1368 +611, WebRtcIsac_kQKltCdfShape +1368 +640}}; + +/* code length for all coefficients using different models */ +const double WebRtcIsac_kQKltCodeLenGain[392] = { + 12.29956028, 7.83007500, 4.25642781, 0.17489215, 4.27591254, 7.66908312, 10.47643804, 11.91253716, 9.03421572, 8.57373525, + 6.73555740, 5.41409855, 3.65237863, 0.42623449, 3.22418399, 5.68145719, 7.14201900, 8.20558413, 9.34178852, 13.00000000, + 13.00000000, 9.47643804, 6.71459778, 3.55472644, 0.28457419, 3.70652835, 7.41128536, 11.60768258, 14.00000000, 12.29956028, + 9.29956028, 8.02845645, 6.54878889, 5.07667251, 2.87749552, 0.65310542, 3.11316029, 4.87911416, 5.89540125, 6.76398581, + 7.70537925, 9.67807191, 11.14201900, 14.00000000, 14.00000000, 12.29956028, 9.69621925, 7.70537925, 5.49915812, 2.67441345, + 0.63381441, 2.74999773, 5.76877882, 8.41503750, 10.75207249, 14.00000000, 9.60768258, 8.85025288, 8.09913319, 7.09010692, + 6.36337538, 5.46667027, 4.51618422, 2.64189829, 1.21843537, 2.43823474, 3.89409149, 4.99718498, 6.00989604, 6.78325414, + 7.39637366, 8.76159526, 10.60768258, 11.67807191, 12.29956028, 9.54056838, 7.95560588, 5.63040265, 3.81264793, 2.18521728, + 1.33727600, 2.37909290, 3.94981123, 5.52426657, 7.32051990, 8.84012866, 11.35614381, 13.00000000, 12.29956028, 11.35614381, + 11.35614381, 10.24511250, 9.12963528, 8.80032766, 7.97763219, 7.83007500, 7.09913319, 6.68711704, 6.41879942, 5.74379131, + 5.25096862, 4.43061904, 3.54492969, 2.72664147, 2.16306204, 2.71142226, 3.34357514, 4.07444556, 4.95151313, 5.68145719, + 6.12041675, 6.55085135, 7.00282052, 7.55705650, 8.44541115, 9.41503750, 10.91253716, 11.60768258, 14.00000000, 14.00000000, + 13.00000000, 11.60768258, 10.47643804, 8.80032766, 7.38161450, 6.52426657, 5.47447919, 4.53749773, 3.92719747, 3.41058292, + 2.88495635, 2.79344346, 2.85805254, 3.18261657, 3.57216340, 4.08225499, 4.74438125, 5.51215997, 6.30477171, 7.15450995, + 8.28575448, 9.69621925, 11.60768258, 13.00000000, 13.67807191, 15.00000000, 15.00000000, 14.00000000, 12.41503750, 11.29956028, + 12.41503750, 11.60768258, 10.11735695, 9.47643804, 9.12963528, 9.41503750, 8.23181568, 7.97763219, 7.82507432, 7.50814690, + 7.33466408, 6.99157138, 6.95834085, 6.80524315, 6.47447919, 6.35614381, 6.02128954, 5.71459778, 5.58109327, 5.05821876, + 4.94539568, 4.59220115, 4.27591254, 4.01522554, 3.89376424, 3.83760867, 3.73321346, 3.74674342, 3.90493270, 4.18942837, + 4.33599724, 4.42446075, 4.81760565, 5.07667251, 5.54570071, 5.95697272, 6.46667027, 6.91253716, 7.33466408, 7.82507432, + 8.05163277, 9.12963528, 9.02272008, 9.77118131, 9.60768258, 10.11735695, 12.00000000, 12.83007500, 15.00000000, 15.00000000, + 14.00000000, 15.00000000, 11.75207249, 12.29956028, 10.95560588, 9.93391081, 9.02272008, 8.00564656, 7.82507432, 7.28919357, + 6.77599833, 6.56745810, 6.19910010, 6.23347109, 5.67694524, 5.41879942, 4.96039548, 4.88170777, 4.60768258, 4.52883287, + 4.28876323, 4.17583679, 4.21332197, 4.14474217, 4.16119001, 4.12809476, 4.18501706, 4.28489599, 4.35299136, 4.60286019, + 4.63040265, 4.81017544, 5.00989604, 5.33822190, 5.43489792, 5.84644797, 6.13272126, 6.75444729, 7.36337538, 7.96108101, + 8.54056838, 9.28575448, 9.12963528, 9.47643804, 10.75207249, 12.29956028, 12.41503750, 11.14201900, 12.83007500, 15.00000000, + 15.00000000, 15.00000000, 15.00000000, 15.00000000, 15.00000000, 14.00000000, 15.00000000, 15.00000000, 15.00000000, 15.00000000, + 13.67807191, 12.41503750, 11.91253716, 11.60768258, 12.29956028, 13.00000000, 12.29956028, 10.95560588, 10.60768258, 9.77118131, + 10.02272008, 10.11735695, 10.14201900, 10.75207249, 10.75207249, 9.69621925, 9.47643804, 9.75207249, 8.72387559, 8.47643804, + 8.68711704, 8.40754296, 8.20558413, 8.26529038, 7.84518189, 7.89147554, 7.64685317, 7.41128536, 7.33466408, 7.42635281, + 7.24845594, 7.11430363, 7.07518750, 7.07518750, 6.70537925, 6.64906082, 6.73555740, 6.62931259, 6.50015411, 6.26190774, + 6.36337538, 6.19264508, 5.95151313, 6.08860801, 5.91253716, 5.83007500, 5.68145719, 5.67244736, 5.82632286, 6.00282052, + 5.65348627, 5.74970158, 5.87846648, 5.69052365, 5.64464890, 5.58531476, 5.81512466, 5.57688409, 5.87329553, 5.62170514, + 5.74851759, 5.81017544, 5.64464890, 5.76398581, 5.60339522, 5.69507833, 5.84139031, 5.68711704, 5.73908047, 5.84139031, + 5.71459778, 5.96245305, 5.82632286, 5.89540125, 6.08860801, 6.12041675, 6.13272126, 6.30477171, 6.24177679, 6.28232358, + 6.29091619, 6.53239445, 6.81512466, 6.72620440, 6.65792533, 6.84518189, 7.10215454, 7.44157929, 7.57793523, 7.59485854, + 7.66460965, 8.05163277, 8.00564656, 8.43775758, 8.10518224, 8.28575448, 8.77118131, 8.23181568, 8.29264087, 8.20558413, + 8.34894831, 8.89147554, 8.40754296, 8.61629571, 8.64244800, 8.61629571, 8.93391081, 8.50814690, 9.02272008, 8.68711704, + 8.65127185, 9.41503750, 9.11735695, 9.85025288, 10.24511250, 10.60768258, 10.47643804, 11.60768258, 11.35614381, 12.29956028, + 15.00000000, 15.00000000, 12.29956028, 13.00000000, 15.00000000, 15.00000000, 15.00000000, 15.00000000, 14.00000000, 12.83007500, + 15.00000000, 15.00000000}; + +const double WebRtcIsac_kQKltCodeLenShape[578] = { + 0.00002201, 0.00002201, 0.00002201, 0.00002201, 0.00002201, 0.00002201, 0.00002201, 0.00002201, 0.00002201, 14.00000000, + 0.00011007, 13.00000000, 0.00066056, 11.60768258, 11.14201900, 0.00185034, 10.24511250, 9.08113676, 0.00480700, 9.41503750, + 8.09913319, 0.01084946, 8.02845645, 13.00000000, 6.40941295, 0.02926496, 6.95560588, 13.00000000, 13.00000000, 6.21864029, + 0.03861814, 6.30477171, 12.29956028, 11.14201900, 4.66964328, 0.12158980, 4.62604734, 10.91253716, 14.00000000, 11.35614381, + 8.76159526, 3.89671219, 0.21179147, 3.99472634, 8.02272008, 13.00000000, 0.00002201, 0.00002201, 0.00002201, 0.00002201, + 14.00000000, 0.00011007, 0.00002201, 0.00002201, 0.00002201, 0.00002201, 14.00000000, 0.00011007, 10.95560588, 0.00147568, + 10.95560588, 10.24511250, 0.00240150, 10.24511250, 8.02845645, 0.01056115, 8.17982104, 6.74497143, 0.02381629, 7.15137706, + 5.68598330, 0.05650076, 5.72970467, 13.00000000, 14.00000000, 5.18221688, 0.07697435, 5.37611851, 11.91253716, 9.54056838, + 3.92853764, 0.22143514, 3.76428491, 9.28575448, 14.00000000, 11.35614381, 7.37794818, 3.30585980, 0.37001735, 3.18521728, + 6.88886433, 11.91253716, 14.00000000, 0.00002201, 0.00002201, 0.00002201, 0.00002201, 14.00000000, 0.00019814, 14.00000000, + 0.00002201, 13.00000000, 0.00028621, 14.00000000, 14.00000000, 0.00028621, 13.00000000, 11.91253716, 0.00094690, 11.35614381, + 10.60768258, 0.00213692, 10.24511250, 8.37794818, 0.00863317, 8.43775758, 14.00000000, 7.41128536, 0.01698415, 7.42635281, + 6.02702021, 0.04514485, 6.01558154, 13.00000000, 5.05090284, 0.09207659, 4.98877274, 15.00000000, 10.75207249, 4.41081703, + 0.15733047, 4.17424617, 11.60768258, 14.00000000, 15.00000000, 10.06926266, 3.74320161, 0.23091117, 3.81141115, 10.02272008, + 11.91253716, 6.90196792, 2.92703003, 0.46874039, 2.93846004, 7.26190774, 11.60768258, 13.00000000, 10.21864029, 7.95560588, + 5.19345038, 2.40520888, 0.77554605, 2.56628417, 5.41409855, 8.81017544, 12.29956028, 0.00002201, 0.00002201, 0.00002201, + 0.00002201, 11.91253716, 0.00068259, 12.29956028, 10.11735695, 0.00233535, 10.47643804, 10.35614381, 0.00140957, 12.29956028, + 10.24511250, 0.00222511, 10.47643804, 7.72387559, 0.01475842, 7.52426657, 6.73555740, 0.02924249, 6.55085135, 14.00000000, + 5.45021533, 0.06930886, 5.38345116, 4.55913083, 0.11289841, 4.92853764, 11.60768258, 4.07148162, 0.19798859, 3.87200568, + 13.00000000, 9.60768258, 3.31393725, 0.29937064, 3.57321111, 9.35614381, 14.00000000, 8.02845645, 3.08542800, 0.45503557, + 2.80678268, 7.47643804, 12.29956028, 14.00000000, 14.00000000, 14.00000000, 6.83509307, 2.69166097, 0.61673447, 2.51266238, + 6.84771516, 11.91253716, 11.14201900, 7.72387559, 4.61899789, 2.17136763, 1.03592993, 2.28586183, 4.86814304, 7.78568088, + 10.91253716, 14.00000000, 15.00000000, 11.04580369, 9.28575448, 7.26190774, 5.21946023, 3.61575588, 2.18431651, 1.45666604, + 2.33566383, 3.85470467, 5.46181107, 7.30651304, 8.89147554, 11.91253716, 0.00002201, 0.00002201, 15.00000000, 0.00011007, + 15.00000000, 10.47643804, 0.00149771, 11.60768258, 7.30651304, 0.01903486, 7.20558413, 6.92318440, 0.02587674, 6.71459778, + 7.28919357, 0.01756340, 7.45696818, 6.06926266, 0.03841465, 6.45890338, 4.46035649, 0.13896157, 4.43204392, 14.00000000, + 14.00000000, 4.09010692, 0.19672654, 3.86653665, 13.00000000, 14.00000000, 11.35614381, 3.45117809, 0.27340929, 3.64878468, + 9.93391081, 9.60768258, 3.30585980, 0.35178287, 3.15607895, 9.12963528, 12.29956028, 7.93391081, 2.82180202, 0.53064436, + 2.68258739, 7.42635281, 11.14201900, 15.00000000, 10.06926266, 6.15294265, 2.55861197, 0.69308389, 2.48602573, 5.90592231, + 9.47643804, 13.00000000, 11.14201900, 8.20558413, 5.21618324, 2.34973357, 1.00379135, 2.09611815, 4.80278331, 7.82507432, + 11.91253716, 12.29956028, 8.98877274, 6.75444729, 4.23886435, 2.19859476, 1.29528579, 2.06032897, 4.06704711, 6.76398581, + 9.34178852, 13.00000000, 12.29956028, 10.14201900, 8.40754296, 6.16710999, 4.64850859, 3.28768796, 2.22892326, 1.78568088, + 2.35209193, 3.45141888, 4.91121176, 6.45117809, 8.20558413, 10.35614381, 13.00000000, 12.83007500, 14.00000000, 14.00000000, + 12.83007500, 11.35614381, 9.85025288, 9.41503750, 8.07518750, 7.34894831, 6.25516616, 5.25096862, 4.52477322, 3.68513357, + 3.06152306, 2.64011320, 2.54608637, 2.95765662, 3.44445223, 4.01665007, 4.63258525, 5.27633906, 6.24678325, 7.05163277, + 8.02845645, 9.60768258, 10.79054663, 12.83007500, 14.00000000, 0.00002201, 15.00000000, 0.00011007, 15.00000000, 5.82009091, + 0.02710994, 10.11735695, 15.00000000, 3.30346709, 0.17317845, 6.41128536, 15.00000000, 15.00000000, 10.83007500, 2.72897475, + 0.35935964, 3.85853144, 13.00000000, 15.00000000, 3.72766182, 0.17268211, 4.74674342, 15.00000000, 15.00000000, 4.40754296, + 0.11993823, 4.93997965, 15.00000000, 15.00000000, 4.70193743, 0.22110152, 3.27591254, 11.35614381, 15.00000000, 12.54056838, + 6.94743195, 2.99157138, 0.62079088, 2.25338071, 7.41128536, 15.00000000, 15.00000000, 11.47643804, 6.04580369, 2.80232255, + 0.98380109, 1.70502034, 5.15607895, 10.75207249, 13.00000000, 15.00000000, 15.00000000, 11.35614381, 6.44157929, 2.37955105, + 0.74567258, 2.44181848, 6.07667251, 10.75207249, 15.00000000, 15.00000000, 15.00000000, 15.00000000, 9.44541115, 5.25432568, + 1.97815248, 0.94086682, 2.57885561, 5.17265730, 8.72387559, 14.00000000, 15.00000000, 15.00000000, 15.00000000, 10.67807191, + 7.59485854, 4.91187431, 2.91934900, 1.32321648, 1.50614455, 3.85215911, 7.15137706, 10.60768258, 14.00000000, 15.00000000, + 15.00000000, 15.00000000, 15.00000000, 15.00000000, 15.00000000, 15.00000000, 11.09310940, 8.50814690, 6.45117809, 3.94675287, + 2.16730774, 1.37674720, 2.10215454, 3.97278511, 6.34178852, 8.50814690, 10.32757466, 14.00000000, 14.00000000, 15.00000000, + 15.00000000, 15.00000000, 14.00000000, 10.02272008, 9.41503750, 7.03710399, 5.13349379, 3.61683574, 2.47999526, 1.82788507, + 2.00945280, 3.08020557, 4.69793233, 6.64025044, 8.32051990, 10.91253716, 14.00000000, 15.00000000, 15.00000000, 15.00000000, + 15.00000000, 15.00000000, 15.00000000, 14.41503750, 9.41503750, 7.10215454, 5.60768258, 4.44014496, 3.30064444, 2.56941678, + 2.28103909, 2.42694459, 2.93206152, 3.83383692, 4.75207249, 6.02702021, 7.16394964, 9.35614381, 11.14201900, 12.29956028, + 15.00000000, 15.00000000, 14.00000000, 15.00000000, 15.00000000, 10.11735695, 8.85025288, 7.02558541, 5.86300889, 4.79726396, + 3.95117259, 3.44925321, 2.96348293, 2.88219459, 2.89671219, 3.10518224, 3.50065237, 4.05748549, 4.55291677, 5.23016216, + 5.79420675, 6.39452048, 6.91253716, 7.97763219, 8.32051990, 9.35614381, 10.60768258, 11.60768258, 15.00000000, 15.00000000, + 12.83007500, 12.41503750, 11.91253716, 14.00000000, 14.00000000, 11.35614381, 10.75207249, 10.91253716, 8.93391081, 8.61629571, + 8.29264087, 8.02272008, 7.89147554, 7.33466408, 7.41128536, 6.71459778, 5.92853764, 5.31964048, 4.97693875, 4.70308379, + 4.43632704, 4.34357514, 4.30825648, 4.26529038, 4.19465917, 4.27420773, 4.22315577, 4.08262792, 4.06667818, 4.16119001, + 4.08860801, 4.26698468, 4.39128315, 4.71517590, 5.10442472, 5.50714538, 5.81017544, 6.15922208}; + +/* left KLT transforms */ +const double WebRtcIsac_kKltT1Gain[3][4] = { +{-0.79742827, 0.60341375, 0.60341375, 0.79742827}, +{-0.81372390, 0.58125159, 0.58125159, 0.81372390}, +{-0.71832547, 0.69570721, 0.69570721, 0.71832547}}; + +const double WebRtcIsac_kKltT1Shape[3][324] = { +{ 0.00159597, 0.00049320, 0.00513821, 0.00021066, 0.01338581, -0.00422367, -0.00272072, 0.00935107, 0.02047622, 0.02691189, + 0.00478236, 0.03969702, 0.00886698, 0.04877604, -0.10898362, -0.05930891, -0.03415047, 0.98889721, 0.00293558, -0.00035282, + 0.01156321, -0.00195341, -0.00937631, 0.01052213, -0.02551163, 0.01644059, 0.03189927, 0.07754773, -0.08742313, -0.03026338, + 0.05136248, -0.14395974, 0.17725040, 0.22664856, 0.93380230, 0.07076411, 0.00557890, -0.00222834, 0.01377569, 0.01466808, + 0.02847361, -0.00603178, 0.02382480, -0.01210452, 0.03797267, -0.02371480, 0.11260335, -0.07366682, 0.00453436, -0.04136941, +-0.07912843, -0.95031418, 0.25295337, -0.05302216, -0.00617554, -0.00044040, -0.00653778, 0.01097838, 0.01529174, 0.01374431, +-0.00748512, -0.00020034, 0.02432713, 0.11101570, -0.08556891, 0.09282249, -0.01029446, 0.67556443, -0.67454300, 0.06910063, + 0.20866865, -0.10318050, 0.00932175, 0.00524058, 0.00803610, -0.00594676, -0.01082578, 0.01069906, 0.00546768, 0.01565291, + 0.06816200, 0.10201227, 0.16812734, 0.22984074, 0.58213170, -0.54138651, -0.51379962, 0.06847390, -0.01920037, -0.04592324, +-0.00467394, 0.00328858, 0.00377424, -0.00987448, 0.08222096, -0.00377301, 0.04551941, -0.02592517, 0.16317082, 0.13077530, + 0.22702921, -0.31215289, -0.69645962, -0.38047101, -0.39339411, 0.11124777, 0.02508035, -0.00708074, 0.00400344, 0.00040331, + 0.01142402, 0.01725406, 0.01635170, 0.14285366, 0.03949233, -0.05905676, 0.05877154, -0.17497577, -0.32479440, 0.80754464, +-0.38085603, -0.17055430, -0.03168622, -0.07531451, 0.02942002, -0.02148095, -0.00754114, -0.00322372, 0.00567812, -0.01701521, +-0.12358320, 0.11473564, 0.09070136, 0.06533068, -0.22560802, 0.19209022, 0.81605094, 0.36592275, -0.09919829, 0.16667122, + 0.16300725, 0.04803807, 0.06739263, -0.00156752, -0.01685302, -0.00905240, -0.02297836, -0.00469939, 0.06310613, -0.16391930, + 0.10919511, 0.12529293, 0.85581322, -0.32145522, 0.24539076, 0.07181839, 0.07289591, 0.14066759, 0.10406711, 0.05815518, + 0.01072680, -0.00759339, 0.00053486, -0.00044865, 0.03407361, 0.01645348, 0.08758579, 0.27722240, 0.53665485, -0.74853376, +-0.01118192, -0.19805430, 0.06130619, -0.09675299, 0.08978480, 0.03405255, -0.00706867, 0.05102045, 0.03250746, 0.01849966, +-0.01216314, -0.01184187, -0.01579288, 0.00114807, 0.11376166, 0.88342114, -0.36425379, 0.13863190, 0.12524180, -0.13553892, + 0.04715856, -0.12341103, 0.04531568, 0.01899360, -0.00206897, 0.00567768, -0.01444163, 0.00411946, -0.00855896, 0.00381663, +-0.01664861, -0.05534280, 0.21328278, 0.20161162, 0.72360394, 0.59130708, -0.08043791, 0.08757349, -0.13893918, -0.05147377, + 0.02680690, -0.01144070, 0.00625162, -0.00634215, -0.01248947, -0.00329455, -0.00609625, -0.00136305, -0.05097048, -0.01029851, + 0.25065384, -0.16856837, -0.07123372, 0.15992623, -0.39487617, -0.79972301, 0.18118185, -0.04826639, -0.01805578, -0.02927253, +-0.16400618, 0.07472763, 0.10376449, 0.01705406, 0.01065801, -0.01500498, 0.02039914, 0.37776349, -0.84484186, 0.10434286, + 0.15616990, 0.13474456, -0.00906238, -0.25238368, -0.03820885, -0.10650905, -0.03880833, -0.03660028, -0.09640894, 0.00583314, + 0.01922097, 0.01489911, -0.02431117, -0.09372217, 0.39404721, -0.84786223, -0.31277121, 0.03193850, 0.01974060, 0.01887901, + 0.00337911, -0.11359599, -0.02792521, -0.03220184, -0.01533311, 0.00015962, -0.04225043, -0.00933965, 0.00675311, 0.00206060, + 0.15926771, 0.40199829, -0.80792558, -0.35591604, -0.17169764, 0.02830436, 0.02459982, -0.03438589, 0.00718705, -0.01798329, +-0.01594508, -0.00702430, -0.00952419, -0.00962701, -0.01307212, -0.01749740, 0.01299602, 0.00587270, -0.36103108, -0.82039266, +-0.43092844, -0.08500097, -0.04361674, -0.00333482, 0.01250434, -0.02538295, -0.00921797, 0.01645071, -0.01400872, 0.00317607, + 0.00003277, -0.01617646, -0.00616863, -0.00882661, 0.00466157, 0.00353237, 0.91803104, -0.39503305, -0.02048964, 0.00060125, + 0.01980634, 0.00300109, 0.00313880, 0.00657337, 0.00715163, 0.00000261, 0.00854276, -0.00154825, -0.00516128, 0.00909527, + 0.00095609, 0.00701196, -0.00221867, -0.00156741}, +{-0.00469582, -0.00020403, -0.00587134, 0.00185153, -0.02256479, -0.01185761, -0.02891481, -0.00493792, -0.00182344, 0.00285962, + 0.01558059, -0.02185140, 0.04639438, -0.04357142, 0.12718613, -0.06756136, 0.05542227, 0.98480184, -0.00374376, -0.00236433, +-0.00607169, -0.00303290, -0.00127243, -0.01794845, 0.00620033, -0.00732704, -0.02837749, -0.00107164, 0.04820548, 0.00713300, + 0.09784244, -0.16806261, -0.04563341, -0.33406041, 0.91554083, -0.08139655, -0.00415851, -0.00538193, -0.00731198, -0.00534534, +-0.00623075, -0.02016943, -0.05480133, -0.03172290, -0.03879603, 0.01518441, 0.09591688, 0.02238470, 0.08126640, 0.08236821, +-0.24802119, 0.89516402, 0.32029647, 0.07188887, -0.00220366, 0.00344025, -0.00277284, 0.00358963, -0.08668007, -0.02205910, +-0.05289669, -0.03535201, -0.01188017, -0.06456872, -0.09321006, -0.00009617, -0.15804070, 0.24632041, 0.90166119, 0.19250690, + 0.17264619, -0.09699155, -0.00567329, -0.00897700, -0.01442565, -0.01939390, 0.03702127, -0.02999862, -0.04385696, -0.05232394, +-0.03339177, 0.03905964, -0.00281424, -0.29213275, 0.02892968, 0.90257613, -0.21546058, -0.18070946, 0.09014567, 0.04117230, +-0.01029696, -0.00329116, -0.03354346, 0.02937079, 0.01274208, -0.01260649, -0.03505571, -0.01020645, 0.03787209, 0.12132165, +-0.20826840, 0.81556933, -0.43874351, 0.21518682, -0.14564290, -0.05210031, 0.07124563, 0.06127983, -0.00457321, 0.01740496, + 0.04185176, 0.00128036, -0.05033693, -0.01890046, 0.06221734, 0.10280078, -0.03738531, 0.04830209, -0.08408293, -0.46409009, +-0.83936263, -0.14817619, -0.13135927, 0.04563506, 0.08340661, 0.04040200, 0.00044396, -0.01365972, 0.01228951, 0.01078273, + 0.09205406, -0.03791500, 0.07135889, 0.08158339, 0.06298278, -0.22875755, -0.92917558, -0.11248260, 0.17801883, -0.03971674, +-0.07491915, 0.06477287, 0.04635713, 0.01856159, 0.00130895, -0.01991604, 0.02358176, -0.09376056, 0.02782280, -0.04691559, + 0.13749249, 0.31383132, 0.92274602, 0.04727419, 0.09765196, -0.02108945, 0.00626005, 0.05193322, 0.02009133, 0.03094066, + 0.04573470, 0.00451733, 0.00240169, -0.00982355, -0.03546208, -0.14156875, -0.02480689, 0.22997442, 0.09778317, 0.88834235, +-0.32797611, -0.00079977, 0.04917079, 0.06977359, 0.06451185, 0.07816204, 0.03119314, 0.01136506, 0.01062006, 0.00632783, + 0.03241828, -0.03318847, -0.01350502, -0.30055361, 0.07265375, 0.17308022, 0.88795796, -0.23231020, -0.08932700, 0.11759604, + 0.00590705, 0.03525351, 0.00840466, 0.04389942, 0.04387629, 0.04003275, 0.01772966, 0.02709780, -0.02393282, 0.02766178, + 0.00342983, -0.33882220, 0.76612668, 0.44061716, -0.28414784, -0.09364014, 0.03694060, 0.01124120, 0.01130268, -0.02869682, +-0.07428963, -0.03504754, 0.05874942, 0.01196795, 0.02003875, 0.00787152, -0.01605561, 0.04501257, -0.06959958, -0.13015784, +-0.05738065, 0.04681625, 0.06668700, -0.04492094, 0.02927765, -0.94404277, 0.19243952, 0.09504337, -0.12540826, 0.05394317, +-0.07972638, -0.02145188, 0.00136427, 0.01964678, 0.06667373, 0.06204535, 0.17302394, 0.22005905, 0.58329964, -0.68440447, + 0.19628796, 0.15718011, -0.12481840, -0.08222507, 0.11780870, 0.03798206, -0.01818866, 0.00892766, 0.05582263, 0.01126832, +-0.00973589, 0.00697442, -0.09937902, 0.06621185, -0.19452202, -0.80004569, -0.13946094, -0.48990700, -0.17595191, -0.00798873, +-0.06121856, 0.08768040, -0.04507631, 0.00448896, 0.01153941, -0.04711652, -0.01050749, -0.01660047, -0.03007159, -0.01468906, + 0.12848053, 0.13859838, 0.93863771, -0.22250065, -0.14841278, 0.04666032, -0.06344813, -0.01915105, -0.01840150, -0.02389410, +-0.01245496, 0.05023402, 0.02125840, 0.02467318, -0.01893022, -0.00889647, 0.00551817, 0.00481915, -0.40626968, -0.89028236, + 0.18261687, -0.03852330, 0.02621926, -0.05420122, -0.01704117, -0.00072893, -0.02694170, -0.04335124, 0.02256467, 0.00642301, +-0.01619484, -0.00871160, 0.00400065, -0.00488820, -0.00752173, -0.00170603, 0.89554989, -0.41825934, -0.08725803, -0.09051404, +-0.00916236, -0.02959065, -0.07268075, -0.00816626, -0.00314215, -0.01941078, -0.00036782, -0.00188655, -0.02107724, -0.00771657, +-0.00448194, -0.00387517, 0.00082998, 0.00202471}, +{ 0.00167296, -0.00647772, -0.00604394, 0.01490810, -0.00837664, 0.00246438, 0.02082153, 0.01216715, 0.01001396, -0.02850860, +-0.01187868, -0.00113289, 0.04140237, -0.11084998, 0.16102260, 0.20084170, -0.28969446, -0.91312256, 0.00087788, -0.00136895, + 0.00004622, 0.00578894, 0.00524119, -0.00044550, 0.00948906, -0.00396910, -0.03312197, -0.00075487, 0.00987494, -0.02088734, + 0.09835550, -0.20080342, 0.13687782, -0.16111863, -0.90089988, 0.30312999, 0.00248784, -0.00975419, -0.01617200, 0.00699371, +-0.02151635, -0.01625774, -0.01262800, 0.02588781, -0.05620764, -0.13651454, 0.04242442, -0.02615307, 0.20497288, -0.20422909, + 0.14184406, 0.89712919, 0.01758042, 0.25447787, -0.00207668, -0.00260329, 0.00724812, -0.01007749, 0.00806242, -0.03089729, +-0.01161934, -0.00618676, -0.10327342, -0.10160272, 0.11919283, 0.20781533, 0.11564869, -0.19072476, 0.86402008, -0.24650846, + 0.24684161, 0.04775750, 0.00486888, -0.01735569, -0.01868000, -0.01870386, -0.03243262, -0.05883701, -0.03433371, 0.10441236, +-0.22831067, -0.22837988, 0.15082544, -0.21313767, 0.13215611, -0.78096079, -0.32270595, -0.21307018, 0.17339271, -0.05435742, +-0.00940813, 0.00272520, 0.00542917, -0.05232991, -0.01280809, -0.10773627, -0.17626479, 0.03719285, -0.26297104, -0.21780618, + 0.21406665, 0.15202177, 0.75911044, 0.38627481, -0.16504189, -0.10242997, -0.02394939, -0.06018959, 0.00994733, -0.02617197, +-0.01543723, -0.10320051, -0.03010481, -0.19098072, -0.06893233, 0.12253174, -0.25556092, -0.31989059, 0.09542655, 0.72712041, +-0.43108921, -0.01568072, -0.16532685, 0.06646835, -0.08885408, -0.00050364, -0.01791050, 0.00245405, 0.00204794, -0.17948691, +-0.05193881, -0.16329387, -0.13676259, 0.01214133, -0.30994612, -0.00687734, 0.63254090, -0.47180795, -0.35409214, 0.23658315, + 0.11170294, 0.05229887, -0.06107035, -0.01094212, 0.01523854, -0.01608284, -0.03739206, -0.23864328, -0.03958494, -0.19305719, +-0.26019058, 0.24108257, -0.55933566, 0.40623396, -0.53367968, -0.08930957, -0.00599383, -0.00050845, 0.06960811, 0.02664961, + 0.01464197, -0.00486781, -0.01905736, 0.01437578, 0.02379930, -0.26639588, 0.05208876, -0.43525002, -0.63009424, 0.05251889, + 0.56732782, -0.06731164, -0.03705909, -0.03253946, 0.00950673, -0.07941760, 0.02388267, -0.01258409, -0.00343524, 0.00148711, +-0.00362107, 0.03981813, -0.07235214, -0.46180041, -0.05595288, -0.55699317, 0.61935853, -0.25379716, 0.06796783, 0.01039267, +-0.06329171, -0.02143024, 0.09406929, -0.00799203, -0.01419805, -0.00603024, 0.01313145, 0.00091161, -0.00212107, -0.02405340, + 0.07146405, -0.76695326, -0.14841817, 0.60372663, -0.01478424, 0.06522462, 0.08580016, -0.05817981, 0.02438942, 0.04840904, + 0.02934363, -0.02239678, -0.00582247, -0.00091312, -0.00394148, -0.00285276, -0.03435745, 0.05277435, 0.17882781, -0.06194164, + 0.27321118, 0.01840179, -0.10188148, -0.33168524, -0.03491221, 0.67351789, 0.37017376, 0.32083717, 0.09737800, -0.20998084, +-0.10725041, 0.06379186, 0.02169903, -0.02031584, 0.05623799, -0.18300962, -0.17337803, 0.08915172, -0.53835537, -0.08547263, + 0.15163321, 0.56732906, 0.21878115, 0.37274266, 0.26206918, 0.13443927, 0.09178695, -0.03276324, -0.01131664, -0.00236369, + 0.00772568, 0.01008805, -0.17122615, 0.15301569, 0.40135484, -0.06058913, 0.56405128, -0.05176853, 0.24544337, 0.62448073, + 0.07265009, -0.01198695, 0.05151774, -0.03678498, 0.01886154, 0.03724094, 0.01393667, 0.00758055, -0.00254297, 0.00537118, + 0.24169707, -0.41735970, -0.67564355, -0.09270478, 0.53106033, 0.06214579, 0.02574404, 0.09943837, 0.03032542, 0.02194476, + 0.06369772, -0.00133741, 0.01301113, 0.01508494, 0.00036111, -0.00278870, 0.00139205, 0.00015792, -0.43347887, 0.69923146, +-0.55406563, -0.01102231, 0.01347767, 0.07012139, -0.02530164, 0.06803192, 0.01177196, 0.04374491, 0.04073027, 0.04037438, + 0.00167330, -0.01807065, -0.00425562, 0.00149653, -0.00035119, -0.00172888, 0.84785495, 0.52289580, 0.01067734, -0.00859194, + 0.01685964, 0.00481442, 0.00434738, 0.07592695, 0.01419942, 0.01005336, 0.03316937, 0.00360465, 0.00435039, 0.00029122, + 0.00171268, 0.00198919, -0.00046889, -0.00094176}}; + +/* right KLT transforms */ +const double WebRtcIsac_kKltT2Gain[3][36] = { +{ 0.14572837, -0.45446306, 0.61990621, -0.52197033, 0.32145074, -0.11026900, -0.20698282, 0.48962182, -0.27127933, -0.33627476, + 0.65094037, -0.32715751, 0.40262573, -0.47844405, -0.33876075, 0.44130653, 0.37383966, -0.39964662, -0.51730480, 0.06611973, + 0.49030187, 0.47512886, -0.02141226, -0.51129451, -0.58578569, -0.39132064, -0.13187771, 0.15649421, 0.40735596, 0.54396897, + 0.40381276, 0.40904942, 0.41179766, 0.41167576, 0.40840251, 0.40468132}, +{-0.11368135, 0.34815515, -0.56434996, 0.61130763, -0.39970336, 0.11795708, 0.28514257, -0.58879243, 0.32775812, 0.27024886, +-0.56251299, 0.27411037, 0.42649186, -0.44080232, -0.36408215, 0.35932457, 0.43592895, -0.41484213, -0.49813030, -0.00012592, + 0.49865688, 0.47634953, 0.01094246, -0.52552726, -0.56154082, -0.41110686, -0.14170764, 0.15946614, 0.40818082, 0.55094554, + 0.40051601, 0.41084781, 0.41567800, 0.41450700, 0.40871872, 0.39891823}, +{-0.10719481, 0.34796287, -0.54573957, 0.59521001, -0.43943367, 0.14907223, 0.26554957, -0.59549939, 0.36760692, 0.26040652, +-0.55268701, 0.25778784, 0.38994096, -0.45282773, -0.37975656, 0.40213055, 0.43052647, -0.38937904, -0.52698359, 0.02788094, + 0.48284286, 0.47792474, 0.02557759, -0.50922240, -0.57699826, -0.39476779, -0.14708238, 0.12742149, 0.37835245, 0.57464021, + 0.39408127, 0.40327462, 0.40993655, 0.41419345, 0.41506301, 0.41253853}}; + +const double WebRtcIsac_kKltT2Shape[3][36] = { +{ 0.13427386, -0.35132558, 0.52506528, -0.59419077, 0.45075085, -0.16312057, 0.29857439, -0.58660147, 0.34265431, 0.20879510, +-0.56063262, 0.30238345, 0.43308283, -0.41186999, -0.35288681, 0.42768996, 0.36094634, -0.45284910, -0.47116680, 0.02893449, + 0.54326135, 0.45249040, -0.06264420, -0.52283830, 0.57137758, 0.44298139, 0.12617554, -0.20819946, -0.42324603, -0.48876443, + 0.39597050, 0.40713935, 0.41389880, 0.41512486, 0.41130400, 0.40575001}, +{ 0.16540737, -0.43379435, 0.58165221, -0.55154773, 0.35734028, -0.11935912, 0.29434254, -0.55954817, 0.23549804, 0.33087258, +-0.58848503, 0.29835834, 0.45464789, -0.38316155, -0.41689708, 0.35607296, 0.41260747, -0.41910198, -0.48633899, -0.04144955, + 0.47824583, 0.51050942, 0.01000345, -0.52184032, 0.53488229, 0.42641051, 0.17049774, -0.15849613, -0.43229355, -0.53945045, + 0.39582002, 0.41033103, 0.41788713, 0.41688080, 0.41081697, 0.39719658}, +{ 0.13386268, -0.37919915, 0.54989123, -0.57663572, 0.42402636, -0.15362720, 0.29641577, -0.58806770, 0.31381040, 0.26524954, +-0.56271012, 0.28431868, 0.42699898, -0.41058922, -0.40408270, 0.39215865, 0.40788513, -0.40699735, -0.49846482, -0.01521208, + 0.48756040, 0.49479418, -0.00347672, -0.51841384, 0.55513106, 0.41683793, 0.15131217, -0.15613621, -0.41029341, -0.54996461, + 0.39402116, 0.40965305, 0.41862791, 0.41730770, 0.41089648, 0.39837262}}; + +/* means of log gains and LAR coefficients*/ +const double WebRtcIsac_kLpcMeansGain[3][12] = { +{-6.86881911, -5.35075273, -6.86792680, -5.36200897, -6.86401538, -5.36921533, -6.86802969, -5.36893966, -6.86538097, -5.36315063, +-6.85535304, -5.35155315}, +{-6.12914600, -4.78070092, -6.12971780, -4.78382183, -6.12858525, -4.79362198, -6.12926491, -4.79017481, -6.12102401, -4.78346122, +-6.11441152, -4.78019228}, +{-5.67273484, -3.73876311, -5.65246094, -3.71407895, -5.61716443, -3.68814580, -5.58804560, -3.66334094, -5.54189577, -3.63845640, +-5.49293185, -3.61760203}}; + +const double WebRtcIsac_kLpcMeansShape[3][108] = { +{-0.91232981, 0.26258634, -0.33716701, 0.08477430, -0.03378426, 0.14423909, 0.07036185, 0.06155019, 0.01490385, 0.04138740, + 0.01427317, 0.01288970, 0.83872106, 0.25750199, 0.07988929, -0.01957923, 0.00831390, 0.01770300, -0.90957164, 0.25732216, +-0.33385344, 0.08735740, -0.03715332, 0.14584917, 0.06998990, 0.06131968, 0.01504379, 0.04067339, 0.01428039, 0.01406460, + 0.83846243, 0.26169862, 0.08109025, -0.01767055, 0.00970539, 0.01954310, -0.90490803, 0.24656405, -0.33578607, 0.08843286, +-0.03749139, 0.14443959, 0.07214669, 0.06170993, 0.01449947, 0.04134309, 0.01314762, 0.01413471, 0.83895203, 0.26748062, + 0.08197507, -0.01781298, 0.00885967, 0.01922394, -0.90922472, 0.24495889, -0.33921540, 0.08877169, -0.03581332, 0.14199172, + 0.07444032, 0.06185940, 0.01502054, 0.04185113, 0.01276579, 0.01355457, 0.83645358, 0.26631720, 0.08119697, -0.01835449, + 0.00788512, 0.01846446, -0.90482253, 0.24658310, -0.34019734, 0.08281090, -0.03486038, 0.14359248, 0.07401336, 0.06001471, + 0.01528421, 0.04254560, 0.01321472, 0.01240799, 0.83857127, 0.26281654, 0.08174380, -0.02099842, 0.00755176, 0.01699448, +-0.90132307, 0.25174308, -0.33838268, 0.07883863, -0.02877906, 0.14105407, 0.07220290, 0.06000352, 0.01684879, 0.04226844, + 0.01331331, 0.01269244, 0.83832138, 0.25467485, 0.08118028, -0.02120528, 0.00747832, 0.01567212}, +{-1.11639718, 0.35377266, 0.00798929, 0.20165280, 0.07656104, 0.10629964, 0.04894160, 0.10955305, -0.01806405, 0.05082282, + 0.01730794, 0.01345957, 0.73717782, 0.05952284, 0.03176204, 0.08195122, 0.01253148, 0.02253385, -1.12053537, 0.35523538, + 0.00859646, 0.20007706, 0.07715852, 0.10754596, 0.05165976, 0.10927703, -0.01554395, 0.05178866, 0.01752534, 0.01343468, + 0.73489046, 0.06395167, 0.03287798, 0.07972374, 0.01293550, 0.02300929, -1.11772179, 0.35457623, 0.01205524, 0.19926481, + 0.08000866, 0.10817921, 0.05052481, 0.11016167, -0.01552091, 0.05155510, 0.01787163, 0.01343778, 0.73142568, 0.06840830, + 0.03316828, 0.07902608, 0.01525042, 0.02178127, -1.12120164, 0.36405233, 0.00630305, 0.19799738, 0.07829690, 0.10727588, + 0.04017317, 0.10437949, -0.01844109, 0.05021700, 0.01561726, 0.01226571, 0.73438044, 0.06947982, 0.03396317, 0.07858683, + 0.01367105, 0.02041955, -1.12146187, 0.35952226, 0.00340090, 0.19700813, 0.07938222, 0.10904137, 0.03921216, 0.10531403, +-0.01833415, 0.04956231, 0.01399539, 0.01323582, 0.74378099, 0.07059589, 0.03367692, 0.08151462, 0.01182040, 0.02075577, +-1.11245254, 0.35234230, 0.00687490, 0.20204252, 0.07813186, 0.11081259, 0.04634665, 0.11073238, -0.01637954, 0.05104577, + 0.01675122, 0.01448696, 0.74013627, 0.06239059, 0.03129412, 0.08207461, 0.01249475, 0.02189238}, +{-1.27118948, 0.35834331, -0.33499347, 0.13524073, 0.04829079, 0.19542773, 0.05273835, 0.04157974, -0.01755227, 0.01513442, + 0.00386630, 0.02199463, 1.14439142, 0.21903073, 0.14750213, 0.12743356, 0.08463334, 0.06839691, -1.28367777, 0.35556287, +-0.33809405, 0.13627881, 0.04939309, 0.19642571, 0.05354373, 0.04099247, -0.01787481, 0.01472425, 0.00391474, 0.02150716, + 1.14739079, 0.21840872, 0.14643624, 0.12724347, 0.08390642, 0.06811938, -1.29007667, 0.35159558, -0.34154267, 0.13295849, + 0.04883602, 0.19587595, 0.05452759, 0.04174703, -0.01782110, 0.01388270, 0.00374754, 0.02138105, 1.14333767, 0.21690116, + 0.14544599, 0.12606728, 0.08314168, 0.06771389, -1.29856471, 0.35239315, -0.34238732, 0.13277553, 0.04722712, 0.19233156, + 0.05366901, 0.04328110, -0.01657749, 0.01444736, 0.00438108, 0.02102563, 1.13548397, 0.21537812, 0.14357377, 0.12525845, + 0.08230994, 0.06722511, -1.30663540, 0.34366563, -0.34205544, 0.12861679, 0.04655851, 0.18864359, 0.05351285, 0.04358693, +-0.01604498, 0.01431907, 0.00395326, 0.02082299, 1.12207794, 0.21167325, 0.14212491, 0.12418671, 0.08155467, 0.06639789, +-1.31011673, 0.33686271, -0.34379843, 0.12169569, 0.04480323, 0.18637557, 0.05374078, 0.04260827, -0.01588226, 0.01378294, + 0.00396009, 0.02112406, 1.10466984, 0.20905894, 0.14107033, 0.12303074, 0.08047136, 0.06588031}}; + diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/lpc_tables.h.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/lpc_tables.h.svn-base new file mode 100644 index 0000000000..604d963c37 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/lpc_tables.h.svn-base @@ -0,0 +1,114 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * lpc_tables.h + * + * header file for coding tables for the LPC coefficients + * + */ + +#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_TABLES_H_ +#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_TABLES_H_ + +#include "structs.h" + +#include "settings.h" + +#define KLT_STEPSIZE 1.00000000 +#define KLT_NUM_AVG_GAIN 0 +#define KLT_NUM_AVG_SHAPE 0 +#define KLT_NUM_MODELS 3 +#define LPC_GAIN_SCALE 4.000f +#define LPC_LOBAND_SCALE 2.100f +#define LPC_LOBAND_ORDER ORDERLO +#define LPC_HIBAND_SCALE 0.450f +#define LPC_HIBAND_ORDER ORDERHI +#define LPC_GAIN_ORDER 2 + +#define LPC_SHAPE_ORDER (LPC_LOBAND_ORDER + LPC_HIBAND_ORDER) + +#define KLT_ORDER_GAIN (LPC_GAIN_ORDER * SUBFRAMES) +#define KLT_ORDER_SHAPE (LPC_SHAPE_ORDER * SUBFRAMES) +/* indices of KLT coefficients used */ +extern const WebRtc_UWord16 WebRtcIsac_kQKltSelIndGain[12]; + +extern const WebRtc_UWord16 WebRtcIsac_kQKltSelIndShape[108]; + +/* cdf array for model indicator */ +extern const WebRtc_UWord16 WebRtcIsac_kQKltModelCdf[KLT_NUM_MODELS+1]; + +/* pointer to cdf array for model indicator */ +extern const WebRtc_UWord16 *WebRtcIsac_kQKltModelCdfPtr[1]; + +/* initial cdf index for decoder of model indicator */ +extern const WebRtc_UWord16 WebRtcIsac_kQKltModelInitIndex[1]; + +/* offset to go from rounded value to quantization index */ +extern const short WebRtcIsac_kQKltQuantMinGain[12]; + +extern const short WebRtcIsac_kQKltQuantMinShape[108]; + +/* maximum quantization index */ +extern const WebRtc_UWord16 WebRtcIsac_kQKltMaxIndGain[12]; + +extern const WebRtc_UWord16 WebRtcIsac_kQKltMaxIndShape[108]; + +/* index offset */ +extern const WebRtc_UWord16 WebRtcIsac_kQKltOffsetGain[KLT_NUM_MODELS][12]; + +extern const WebRtc_UWord16 WebRtcIsac_kQKltOffsetShape[KLT_NUM_MODELS][108]; + +/* initial cdf index for KLT coefficients */ +extern const WebRtc_UWord16 WebRtcIsac_kQKltInitIndexGain[KLT_NUM_MODELS][12]; + +extern const WebRtc_UWord16 WebRtcIsac_kQKltInitIndexShape[KLT_NUM_MODELS][108]; + +/* offsets for quantizer representation levels */ +extern const WebRtc_UWord16 WebRtcIsac_kQKltOfLevelsGain[3]; + +extern const WebRtc_UWord16 WebRtcIsac_kQKltOfLevelsShape[3]; + +/* quantizer representation levels */ +extern const double WebRtcIsac_kQKltLevelsGain[1176]; + +extern const double WebRtcIsac_kQKltLevelsShape[1735]; + +/* cdf tables for quantizer indices */ +extern const WebRtc_UWord16 WebRtcIsac_kQKltCdfGain[1212]; + +extern const WebRtc_UWord16 WebRtcIsac_kQKltCdfShape[2059]; + +/* pointers to cdf tables for quantizer indices */ +extern const WebRtc_UWord16 *WebRtcIsac_kQKltCdfPtrGain[KLT_NUM_MODELS][12]; + +extern const WebRtc_UWord16 *WebRtcIsac_kQKltCdfPtrShape[KLT_NUM_MODELS][108]; + +/* code length for all coefficients using different models */ +extern const double WebRtcIsac_kQKltCodeLenGain[392]; + +extern const double WebRtcIsac_kQKltCodeLenShape[578]; + +/* left KLT transforms */ +extern const double WebRtcIsac_kKltT1Gain[KLT_NUM_MODELS][4]; + +extern const double WebRtcIsac_kKltT1Shape[KLT_NUM_MODELS][324]; + +/* right KLT transforms */ +extern const double WebRtcIsac_kKltT2Gain[KLT_NUM_MODELS][36]; + +extern const double WebRtcIsac_kKltT2Shape[KLT_NUM_MODELS][36]; + +/* means of log gains and LAR coefficients */ +extern const double WebRtcIsac_kLpcMeansGain[KLT_NUM_MODELS][12]; + +extern const double WebRtcIsac_kLpcMeansShape[KLT_NUM_MODELS][108]; + +#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_TABLES_H_ */ diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/os_specific_inline.h.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/os_specific_inline.h.svn-base new file mode 100644 index 0000000000..c469c2ec9c --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/os_specific_inline.h.svn-base @@ -0,0 +1,42 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + + +#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_OS_SPECIFIC_INLINE_H_ +#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_OS_SPECIFIC_INLINE_H_ + +#include +#include "typedefs.h" + +// TODO(turaj): switch to WEBRTC_POSIX when available +#if defined(WEBRTC_LINUX) || defined(WEBRTC_MAC) +#define WebRtcIsac_lrint lrint +#elif (defined(WEBRTC_ARCH_X86) && defined(WIN32)) +static __inline long int WebRtcIsac_lrint(double x_dbl) { + long int x_int; + + __asm { + fld x_dbl + fistp x_int + }; + + return x_int; +} +#else // Do a slow but correct implementation of lrint + +static __inline long int WebRtcIsac_lrint(double x_dbl) { + long int x_int; + x_int = (long int)floor(x_dbl + 0.499999999999); + return x_int; +} + +#endif + +#endif // WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_OS_SPECIFIC_INLINE_H_ diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/pitch_estimator.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/pitch_estimator.c.svn-base new file mode 100644 index 0000000000..75525f69d4 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/pitch_estimator.c.svn-base @@ -0,0 +1,622 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#include "pitch_estimator.h" + +#include +#include +#ifdef WEBRTC_ANDROID +#include +#endif + +static const double kInterpolWin[8] = {-0.00067556028640, 0.02184247643159, -0.12203175715679, 0.60086484101160, + 0.60086484101160, -0.12203175715679, 0.02184247643159, -0.00067556028640}; + +/* interpolation filter */ +__inline static void IntrepolFilter(double *data_ptr, double *intrp) +{ + *intrp = kInterpolWin[0] * data_ptr[-3]; + *intrp += kInterpolWin[1] * data_ptr[-2]; + *intrp += kInterpolWin[2] * data_ptr[-1]; + *intrp += kInterpolWin[3] * data_ptr[0]; + *intrp += kInterpolWin[4] * data_ptr[1]; + *intrp += kInterpolWin[5] * data_ptr[2]; + *intrp += kInterpolWin[6] * data_ptr[3]; + *intrp += kInterpolWin[7] * data_ptr[4]; +} + + +/* 2D parabolic interpolation */ +/* probably some 0.5 factors can be eliminated, and the square-roots can be removed from the Cholesky fact. */ +__inline static void Intrpol2D(double T[3][3], double *x, double *y, double *peak_val) +{ + double c, b[2], A[2][2]; + double t1, t2, d; + double delta1, delta2; + + + // double T[3][3] = {{-1.25, -.25,-.25}, {-.25, .75, .75}, {-.25, .75, .75}}; + // should result in: delta1 = 0.5; delta2 = 0.0; peak_val = 1.0 + + c = T[1][1]; + b[0] = 0.5 * (T[1][2] + T[2][1] - T[0][1] - T[1][0]); + b[1] = 0.5 * (T[1][0] + T[2][1] - T[0][1] - T[1][2]); + A[0][1] = -0.5 * (T[0][1] + T[2][1] - T[1][0] - T[1][2]); + t1 = 0.5 * (T[0][0] + T[2][2]) - c; + t2 = 0.5 * (T[2][0] + T[0][2]) - c; + d = (T[0][1] + T[1][2] + T[1][0] + T[2][1]) - 4.0 * c - t1 - t2; + A[0][0] = -t1 - 0.5 * d; + A[1][1] = -t2 - 0.5 * d; + + /* deal with singularities or ill-conditioned cases */ + if ( (A[0][0] < 1e-7) || ((A[0][0] * A[1][1] - A[0][1] * A[0][1]) < 1e-7) ) { + *peak_val = T[1][1]; + return; + } + + /* Cholesky decomposition: replace A by upper-triangular factor */ + A[0][0] = sqrt(A[0][0]); + A[0][1] = A[0][1] / A[0][0]; + A[1][1] = sqrt(A[1][1] - A[0][1] * A[0][1]); + + /* compute [x; y] = -0.5 * inv(A) * b */ + t1 = b[0] / A[0][0]; + t2 = (b[1] - t1 * A[0][1]) / A[1][1]; + delta2 = t2 / A[1][1]; + delta1 = 0.5 * (t1 - delta2 * A[0][1]) / A[0][0]; + delta2 *= 0.5; + + /* limit norm */ + t1 = delta1 * delta1 + delta2 * delta2; + if (t1 > 1.0) { + delta1 /= t1; + delta2 /= t1; + } + + *peak_val = 0.5 * (b[0] * delta1 + b[1] * delta2) + c; + + *x += delta1; + *y += delta2; +} + + +static void PCorr(const double *in, double *outcorr) +{ + double sum, ysum, prod; + const double *x, *inptr; + int k, n; + + //ysum = 1e-6; /* use this with float (i.s.o. double)! */ + ysum = 1e-13; + sum = 0.0; + x = in + PITCH_MAX_LAG/2 + 2; + for (n = 0; n < PITCH_CORR_LEN2; n++) { + ysum += in[n] * in[n]; + sum += x[n] * in[n]; + } + + outcorr += PITCH_LAG_SPAN2 - 1; /* index of last element in array */ + *outcorr = sum / sqrt(ysum); + + for (k = 1; k < PITCH_LAG_SPAN2; k++) { + ysum -= in[k-1] * in[k-1]; + ysum += in[PITCH_CORR_LEN2 + k - 1] * in[PITCH_CORR_LEN2 + k - 1]; + sum = 0.0; + inptr = &in[k]; + prod = x[0] * inptr[0]; + for (n = 1; n < PITCH_CORR_LEN2; n++) { + sum += prod; + prod = x[n] * inptr[n]; + } + sum += prod; + outcorr--; + *outcorr = sum / sqrt(ysum); + } +} + + +void WebRtcIsac_InitializePitch(const double *in, + const double old_lag, + const double old_gain, + PitchAnalysisStruct *State, + double *lags) +{ + double buf_dec[PITCH_CORR_LEN2+PITCH_CORR_STEP2+PITCH_MAX_LAG/2+2]; + double ratio, log_lag, gain_bias; + double bias; + double corrvec1[PITCH_LAG_SPAN2]; + double corrvec2[PITCH_LAG_SPAN2]; + int m, k; + // Allocating 10 extra entries at the begining of the CorrSurf + double corrSurfBuff[10 + (2*PITCH_BW+3)*(PITCH_LAG_SPAN2+4)]; + double* CorrSurf[2*PITCH_BW+3]; + double *CorrSurfPtr1, *CorrSurfPtr2; + double LagWin[3] = {0.2, 0.5, 0.98}; + int ind1, ind2, peaks_ind, peak, max_ind; + int peaks[PITCH_MAX_NUM_PEAKS]; + double adj, gain_tmp; + double corr, corr_max; + double intrp_a, intrp_b, intrp_c, intrp_d; + double peak_vals[PITCH_MAX_NUM_PEAKS]; + double lags1[PITCH_MAX_NUM_PEAKS]; + double lags2[PITCH_MAX_NUM_PEAKS]; + double T[3][3]; + int row; + + for(k = 0; k < 2*PITCH_BW+3; k++) + { + CorrSurf[k] = &corrSurfBuff[10 + k * (PITCH_LAG_SPAN2+4)]; + } + /* reset CorrSurf matrix */ + memset(corrSurfBuff, 0, sizeof(double) * (10 + (2*PITCH_BW+3) * (PITCH_LAG_SPAN2+4))); + + //warnings -DH + max_ind = 0; + peak = 0; + + /* copy old values from state buffer */ + memcpy(buf_dec, State->dec_buffer, sizeof(double) * (PITCH_CORR_LEN2+PITCH_CORR_STEP2+PITCH_MAX_LAG/2-PITCH_FRAME_LEN/2+2)); + + /* decimation; put result after the old values */ + WebRtcIsac_DecimateAllpass(in, State->decimator_state, PITCH_FRAME_LEN, + &buf_dec[PITCH_CORR_LEN2+PITCH_CORR_STEP2+PITCH_MAX_LAG/2-PITCH_FRAME_LEN/2+2]); + + /* low-pass filtering */ + for (k = PITCH_CORR_LEN2+PITCH_CORR_STEP2+PITCH_MAX_LAG/2-PITCH_FRAME_LEN/2+2; k < PITCH_CORR_LEN2+PITCH_CORR_STEP2+PITCH_MAX_LAG/2+2; k++) + buf_dec[k] += 0.75 * buf_dec[k-1] - 0.25 * buf_dec[k-2]; + + /* copy end part back into state buffer */ + memcpy(State->dec_buffer, buf_dec+PITCH_FRAME_LEN/2, sizeof(double) * (PITCH_CORR_LEN2+PITCH_CORR_STEP2+PITCH_MAX_LAG/2-PITCH_FRAME_LEN/2+2)); + + /* compute correlation for first and second half of the frame */ + PCorr(buf_dec, corrvec1); + PCorr(buf_dec + PITCH_CORR_STEP2, corrvec2); + + /* bias towards pitch lag of previous frame */ + log_lag = log(0.5 * old_lag); + gain_bias = 4.0 * old_gain * old_gain; + if (gain_bias > 0.8) gain_bias = 0.8; + for (k = 0; k < PITCH_LAG_SPAN2; k++) + { + ratio = log((double) (k + (PITCH_MIN_LAG/2-2))) - log_lag; + bias = 1.0 + gain_bias * exp(-5.0 * ratio * ratio); + corrvec1[k] *= bias; + } + + /* taper correlation functions */ + for (k = 0; k < 3; k++) { + gain_tmp = LagWin[k]; + corrvec1[k] *= gain_tmp; + corrvec2[k] *= gain_tmp; + corrvec1[PITCH_LAG_SPAN2-1-k] *= gain_tmp; + corrvec2[PITCH_LAG_SPAN2-1-k] *= gain_tmp; + } + + corr_max = 0.0; + /* fill middle row of correlation surface */ + ind1 = 0; + ind2 = 0; + CorrSurfPtr1 = &CorrSurf[PITCH_BW][2]; + for (k = 0; k < PITCH_LAG_SPAN2; k++) { + corr = corrvec1[ind1++] + corrvec2[ind2++]; + CorrSurfPtr1[k] = corr; + if (corr > corr_max) { + corr_max = corr; /* update maximum */ + max_ind = (int)(&CorrSurfPtr1[k] - &CorrSurf[0][0]); + } + } + /* fill first and last rows of correlation surface */ + ind1 = 0; + ind2 = PITCH_BW; + CorrSurfPtr1 = &CorrSurf[0][2]; + CorrSurfPtr2 = &CorrSurf[2*PITCH_BW][PITCH_BW+2]; + for (k = 0; k < PITCH_LAG_SPAN2-PITCH_BW; k++) { + ratio = ((double) (ind1 + 12)) / ((double) (ind2 + 12)); + adj = 0.2 * ratio * (2.0 - ratio); /* adjustment factor; inverse parabola as a function of ratio */ + corr = adj * (corrvec1[ind1] + corrvec2[ind2]); + CorrSurfPtr1[k] = corr; + if (corr > corr_max) { + corr_max = corr; /* update maximum */ + max_ind = (int)(&CorrSurfPtr1[k] - &CorrSurf[0][0]); + } + corr = adj * (corrvec1[ind2++] + corrvec2[ind1++]); + CorrSurfPtr2[k] = corr; + if (corr > corr_max) { + corr_max = corr; /* update maximum */ + max_ind = (int)(&CorrSurfPtr2[k] - &CorrSurf[0][0]); + } + } + /* fill second and next to last rows of correlation surface */ + ind1 = 0; + ind2 = PITCH_BW-1; + CorrSurfPtr1 = &CorrSurf[1][2]; + CorrSurfPtr2 = &CorrSurf[2*PITCH_BW-1][PITCH_BW+1]; + for (k = 0; k < PITCH_LAG_SPAN2-PITCH_BW+1; k++) { + ratio = ((double) (ind1 + 12)) / ((double) (ind2 + 12)); + adj = 0.9 * ratio * (2.0 - ratio); /* adjustment factor; inverse parabola as a function of ratio */ + corr = adj * (corrvec1[ind1] + corrvec2[ind2]); + CorrSurfPtr1[k] = corr; + if (corr > corr_max) { + corr_max = corr; /* update maximum */ + max_ind = (int)(&CorrSurfPtr1[k] - &CorrSurf[0][0]); + } + corr = adj * (corrvec1[ind2++] + corrvec2[ind1++]); + CorrSurfPtr2[k] = corr; + if (corr > corr_max) { + corr_max = corr; /* update maximum */ + max_ind = (int)(&CorrSurfPtr2[k] - &CorrSurf[0][0]); + } + } + /* fill remainder of correlation surface */ + for (m = 2; m < PITCH_BW; m++) { + ind1 = 0; + ind2 = PITCH_BW - m; /* always larger than ind1 */ + CorrSurfPtr1 = &CorrSurf[m][2]; + CorrSurfPtr2 = &CorrSurf[2*PITCH_BW-m][PITCH_BW+2-m]; + for (k = 0; k < PITCH_LAG_SPAN2-PITCH_BW+m; k++) { + ratio = ((double) (ind1 + 12)) / ((double) (ind2 + 12)); + adj = ratio * (2.0 - ratio); /* adjustment factor; inverse parabola as a function of ratio */ + corr = adj * (corrvec1[ind1] + corrvec2[ind2]); + CorrSurfPtr1[k] = corr; + if (corr > corr_max) { + corr_max = corr; /* update maximum */ + max_ind = (int)(&CorrSurfPtr1[k] - &CorrSurf[0][0]); + } + corr = adj * (corrvec1[ind2++] + corrvec2[ind1++]); + CorrSurfPtr2[k] = corr; + if (corr > corr_max) { + corr_max = corr; /* update maximum */ + max_ind = (int)(&CorrSurfPtr2[k] - &CorrSurf[0][0]); + } + } + } + + /* threshold value to qualify as a peak */ + corr_max *= 0.6; + + peaks_ind = 0; + /* find peaks */ + for (m = 1; m < PITCH_BW+1; m++) { + if (peaks_ind == PITCH_MAX_NUM_PEAKS) break; + CorrSurfPtr1 = &CorrSurf[m][2]; + for (k = 2; k < PITCH_LAG_SPAN2-PITCH_BW-2+m; k++) { + corr = CorrSurfPtr1[k]; + if (corr > corr_max) { + if ( (corr > CorrSurfPtr1[k - (PITCH_LAG_SPAN2+5)]) && (corr > CorrSurfPtr1[k - (PITCH_LAG_SPAN2+4)]) ) { + if ( (corr > CorrSurfPtr1[k + (PITCH_LAG_SPAN2+4)]) && (corr > CorrSurfPtr1[k + (PITCH_LAG_SPAN2+5)]) ) { + /* found a peak; store index into matrix */ + peaks[peaks_ind++] = (int)(&CorrSurfPtr1[k] - &CorrSurf[0][0]); + if (peaks_ind == PITCH_MAX_NUM_PEAKS) break; + } + } + } + } + } + for (m = PITCH_BW+1; m < 2*PITCH_BW; m++) { + if (peaks_ind == PITCH_MAX_NUM_PEAKS) break; + CorrSurfPtr1 = &CorrSurf[m][2]; + for (k = 2+m-PITCH_BW; k < PITCH_LAG_SPAN2-2; k++) { + corr = CorrSurfPtr1[k]; + if (corr > corr_max) { + if ( (corr > CorrSurfPtr1[k - (PITCH_LAG_SPAN2+5)]) && (corr > CorrSurfPtr1[k - (PITCH_LAG_SPAN2+4)]) ) { + if ( (corr > CorrSurfPtr1[k + (PITCH_LAG_SPAN2+4)]) && (corr > CorrSurfPtr1[k + (PITCH_LAG_SPAN2+5)]) ) { + /* found a peak; store index into matrix */ + peaks[peaks_ind++] = (int)(&CorrSurfPtr1[k] - &CorrSurf[0][0]); + if (peaks_ind == PITCH_MAX_NUM_PEAKS) break; + } + } + } + } + } + + if (peaks_ind > 0) { + /* examine each peak */ + CorrSurfPtr1 = &CorrSurf[0][0]; + for (k = 0; k < peaks_ind; k++) { + peak = peaks[k]; + + /* compute four interpolated values around current peak */ + IntrepolFilter(&CorrSurfPtr1[peak - (PITCH_LAG_SPAN2+5)], &intrp_a); + IntrepolFilter(&CorrSurfPtr1[peak - 1 ], &intrp_b); + IntrepolFilter(&CorrSurfPtr1[peak ], &intrp_c); + IntrepolFilter(&CorrSurfPtr1[peak + (PITCH_LAG_SPAN2+4)], &intrp_d); + + /* determine maximum of the interpolated values */ + corr = CorrSurfPtr1[peak]; + corr_max = intrp_a; + if (intrp_b > corr_max) corr_max = intrp_b; + if (intrp_c > corr_max) corr_max = intrp_c; + if (intrp_d > corr_max) corr_max = intrp_d; + + /* determine where the peak sits and fill a 3x3 matrix around it */ + row = peak / (PITCH_LAG_SPAN2+4); + lags1[k] = (double) ((peak - row * (PITCH_LAG_SPAN2+4)) + PITCH_MIN_LAG/2 - 4); + lags2[k] = (double) (lags1[k] + PITCH_BW - row); + if ( corr > corr_max ) { + T[0][0] = CorrSurfPtr1[peak - (PITCH_LAG_SPAN2+5)]; + T[2][0] = CorrSurfPtr1[peak - (PITCH_LAG_SPAN2+4)]; + T[1][1] = corr; + T[0][2] = CorrSurfPtr1[peak + (PITCH_LAG_SPAN2+4)]; + T[2][2] = CorrSurfPtr1[peak + (PITCH_LAG_SPAN2+5)]; + T[1][0] = intrp_a; + T[0][1] = intrp_b; + T[2][1] = intrp_c; + T[1][2] = intrp_d; + } else { + if (intrp_a == corr_max) { + lags1[k] -= 0.5; + lags2[k] += 0.5; + IntrepolFilter(&CorrSurfPtr1[peak - 2*(PITCH_LAG_SPAN2+5)], &T[0][0]); + IntrepolFilter(&CorrSurfPtr1[peak - (2*PITCH_LAG_SPAN2+9)], &T[2][0]); + T[1][1] = intrp_a; + T[0][2] = intrp_b; + T[2][2] = intrp_c; + T[1][0] = CorrSurfPtr1[peak - (2*PITCH_LAG_SPAN2+9)]; + T[0][1] = CorrSurfPtr1[peak - (PITCH_LAG_SPAN2+5)]; + T[2][1] = CorrSurfPtr1[peak - (PITCH_LAG_SPAN2+4)]; + T[1][2] = corr; + } else if (intrp_b == corr_max) { + lags1[k] -= 0.5; + lags2[k] -= 0.5; + IntrepolFilter(&CorrSurfPtr1[peak - (PITCH_LAG_SPAN2+6)], &T[0][0]); + T[2][0] = intrp_a; + T[1][1] = intrp_b; + IntrepolFilter(&CorrSurfPtr1[peak + (PITCH_LAG_SPAN2+3)], &T[0][2]); + T[2][2] = intrp_d; + T[1][0] = CorrSurfPtr1[peak - (PITCH_LAG_SPAN2+5)]; + T[0][1] = CorrSurfPtr1[peak - 1]; + T[2][1] = corr; + T[1][2] = CorrSurfPtr1[peak + (PITCH_LAG_SPAN2+4)]; + } else if (intrp_c == corr_max) { + lags1[k] += 0.5; + lags2[k] += 0.5; + T[0][0] = intrp_a; + IntrepolFilter(&CorrSurfPtr1[peak - (PITCH_LAG_SPAN2+4)], &T[2][0]); + T[1][1] = intrp_c; + T[0][2] = intrp_d; + IntrepolFilter(&CorrSurfPtr1[peak + (PITCH_LAG_SPAN2+5)], &T[2][2]); + T[1][0] = CorrSurfPtr1[peak - (PITCH_LAG_SPAN2+4)]; + T[0][1] = corr; + T[2][1] = CorrSurfPtr1[peak + 1]; + T[1][2] = CorrSurfPtr1[peak + (PITCH_LAG_SPAN2+5)]; + } else { + lags1[k] += 0.5; + lags2[k] -= 0.5; + T[0][0] = intrp_b; + T[2][0] = intrp_c; + T[1][1] = intrp_d; + IntrepolFilter(&CorrSurfPtr1[peak + 2*(PITCH_LAG_SPAN2+4)], &T[0][2]); + IntrepolFilter(&CorrSurfPtr1[peak + (2*PITCH_LAG_SPAN2+9)], &T[2][2]); + T[1][0] = corr; + T[0][1] = CorrSurfPtr1[peak + (PITCH_LAG_SPAN2+4)]; + T[2][1] = CorrSurfPtr1[peak + (PITCH_LAG_SPAN2+5)]; + T[1][2] = CorrSurfPtr1[peak + (2*PITCH_LAG_SPAN2+9)]; + } + } + + /* 2D parabolic interpolation gives more accurate lags and peak value */ + Intrpol2D(T, &lags1[k], &lags2[k], &peak_vals[k]); + } + + /* determine the highest peak, after applying a bias towards short lags */ + corr_max = 0.0; + for (k = 0; k < peaks_ind; k++) { + corr = peak_vals[k] * pow(PITCH_PEAK_DECAY, log(lags1[k] + lags2[k])); + if (corr > corr_max) { + corr_max = corr; + peak = k; + } + } + + lags1[peak] *= 2.0; + lags2[peak] *= 2.0; + + if (lags1[peak] < (double) PITCH_MIN_LAG) lags1[peak] = (double) PITCH_MIN_LAG; + if (lags2[peak] < (double) PITCH_MIN_LAG) lags2[peak] = (double) PITCH_MIN_LAG; + if (lags1[peak] > (double) PITCH_MAX_LAG) lags1[peak] = (double) PITCH_MAX_LAG; + if (lags2[peak] > (double) PITCH_MAX_LAG) lags2[peak] = (double) PITCH_MAX_LAG; + + /* store lags of highest peak in output array */ + lags[0] = lags1[peak]; + lags[1] = lags1[peak]; + lags[2] = lags2[peak]; + lags[3] = lags2[peak]; + } + else + { + row = max_ind / (PITCH_LAG_SPAN2+4); + lags1[0] = (double) ((max_ind - row * (PITCH_LAG_SPAN2+4)) + PITCH_MIN_LAG/2 - 4); + lags2[0] = (double) (lags1[0] + PITCH_BW - row); + + if (lags1[0] < (double) PITCH_MIN_LAG) lags1[0] = (double) PITCH_MIN_LAG; + if (lags2[0] < (double) PITCH_MIN_LAG) lags2[0] = (double) PITCH_MIN_LAG; + if (lags1[0] > (double) PITCH_MAX_LAG) lags1[0] = (double) PITCH_MAX_LAG; + if (lags2[0] > (double) PITCH_MAX_LAG) lags2[0] = (double) PITCH_MAX_LAG; + + /* store lags of highest peak in output array */ + lags[0] = lags1[0]; + lags[1] = lags1[0]; + lags[2] = lags2[0]; + lags[3] = lags2[0]; + } +} + + + +/* create weighting matrix by orthogonalizing a basis of polynomials of increasing order + * t = (0:4)'; + * A = [t.^0, t.^1, t.^2, t.^3, t.^4]; + * [Q, dummy] = qr(A); + * P.Weight = Q * diag([0, .1, .5, 1, 1]) * Q'; */ +static const double kWeight[5][5] = { + { 0.29714285714286, -0.30857142857143, -0.05714285714286, 0.05142857142857, 0.01714285714286}, + {-0.30857142857143, 0.67428571428571, -0.27142857142857, -0.14571428571429, 0.05142857142857}, + {-0.05714285714286, -0.27142857142857, 0.65714285714286, -0.27142857142857, -0.05714285714286}, + { 0.05142857142857, -0.14571428571429, -0.27142857142857, 0.67428571428571, -0.30857142857143}, + { 0.01714285714286, 0.05142857142857, -0.05714285714286, -0.30857142857143, 0.29714285714286} +}; + + +void WebRtcIsac_PitchAnalysis(const double *in, /* PITCH_FRAME_LEN samples */ + double *out, /* PITCH_FRAME_LEN+QLOOKAHEAD samples */ + PitchAnalysisStruct *State, + double *lags, + double *gains) +{ + double HPin[PITCH_FRAME_LEN]; + double Weighted[PITCH_FRAME_LEN]; + double Whitened[PITCH_FRAME_LEN + QLOOKAHEAD]; + double inbuf[PITCH_FRAME_LEN + QLOOKAHEAD]; + double out_G[PITCH_FRAME_LEN + QLOOKAHEAD]; // could be removed by using out instead + double out_dG[4][PITCH_FRAME_LEN + QLOOKAHEAD]; + double old_lag, old_gain; + double nrg_wht, tmp; + double Wnrg, Wfluct, Wgain; + double H[4][4]; + double grad[4]; + double dG[4]; + int k, m, n, iter; + + /* high pass filtering using second order pole-zero filter */ + WebRtcIsac_Highpass(in, HPin, State->hp_state, PITCH_FRAME_LEN); + + /* copy from state into buffer */ + memcpy(Whitened, State->whitened_buf, sizeof(double) * QLOOKAHEAD); + + /* compute weighted and whitened signals */ + WebRtcIsac_WeightingFilter(HPin, &Weighted[0], &Whitened[QLOOKAHEAD], &(State->Wghtstr)); + + /* copy from buffer into state */ + memcpy(State->whitened_buf, Whitened+PITCH_FRAME_LEN, sizeof(double) * QLOOKAHEAD); + + old_lag = State->PFstr_wght.oldlagp[0]; + old_gain = State->PFstr_wght.oldgainp[0]; + + /* inital pitch estimate */ + WebRtcIsac_InitializePitch(Weighted, old_lag, old_gain, State, lags); + + + /* Iterative optimization of lags - to be done */ + + /* compute energy of whitened signal */ + nrg_wht = 0.0; + for (k = 0; k < PITCH_FRAME_LEN + QLOOKAHEAD; k++) + nrg_wht += Whitened[k] * Whitened[k]; + + + /* Iterative optimization of gains */ + + /* set weights for energy, gain fluctiation, and spectral gain penalty functions */ + Wnrg = 1.0 / nrg_wht; + Wgain = 0.005; + Wfluct = 3.0; + + /* set initial gains */ + for (k = 0; k < 4; k++) + gains[k] = PITCH_MAX_GAIN_06; + + /* two iterations should be enough */ + for (iter = 0; iter < 2; iter++) { + /* compute Jacobian of pre-filter output towards gains */ + WebRtcIsac_PitchfilterPre_gains(Whitened, out_G, out_dG, &(State->PFstr_wght), lags, gains); + + /* gradient and approximate Hessian (lower triangle) for minimizing the filter's output power */ + for (k = 0; k < 4; k++) { + tmp = 0.0; + for (n = 0; n < PITCH_FRAME_LEN + QLOOKAHEAD; n++) + tmp += out_G[n] * out_dG[k][n]; + grad[k] = tmp * Wnrg; + } + for (k = 0; k < 4; k++) { + for (m = 0; m <= k; m++) { + tmp = 0.0; + for (n = 0; n < PITCH_FRAME_LEN + QLOOKAHEAD; n++) + tmp += out_dG[m][n] * out_dG[k][n]; + H[k][m] = tmp * Wnrg; + } + } + + /* add gradient and Hessian (lower triangle) for dampening fast gain changes */ + for (k = 0; k < 4; k++) { + tmp = kWeight[k+1][0] * old_gain; + for (m = 0; m < 4; m++) + tmp += kWeight[k+1][m+1] * gains[m]; + grad[k] += tmp * Wfluct; + } + for (k = 0; k < 4; k++) { + for (m = 0; m <= k; m++) { + H[k][m] += kWeight[k+1][m+1] * Wfluct; + } + } + + /* add gradient and Hessian for dampening gain */ + for (k = 0; k < 3; k++) { + tmp = 1.0 / (1 - gains[k]); + grad[k] += tmp * tmp * Wgain; + H[k][k] += 2.0 * tmp * (tmp * tmp * Wgain); + } + tmp = 1.0 / (1 - gains[3]); + grad[3] += 1.33 * (tmp * tmp * Wgain); + H[3][3] += 2.66 * tmp * (tmp * tmp * Wgain); + + + /* compute Cholesky factorization of Hessian + * by overwritting the upper triangle; scale factors on diagonal + * (for non pc-platforms store the inverse of the diagonals seperately to minimize divisions) */ + H[0][1] = H[1][0] / H[0][0]; + H[0][2] = H[2][0] / H[0][0]; + H[0][3] = H[3][0] / H[0][0]; + H[1][1] -= H[0][0] * H[0][1] * H[0][1]; + H[1][2] = (H[2][1] - H[0][1] * H[2][0]) / H[1][1]; + H[1][3] = (H[3][1] - H[0][1] * H[3][0]) / H[1][1]; + H[2][2] -= H[0][0] * H[0][2] * H[0][2] + H[1][1] * H[1][2] * H[1][2]; + H[2][3] = (H[3][2] - H[0][2] * H[3][0] - H[1][2] * H[1][1] * H[1][3]) / H[2][2]; + H[3][3] -= H[0][0] * H[0][3] * H[0][3] + H[1][1] * H[1][3] * H[1][3] + H[2][2] * H[2][3] * H[2][3]; + + /* Compute update as delta_gains = -inv(H) * grad */ + /* copy and negate */ + for (k = 0; k < 4; k++) + dG[k] = -grad[k]; + /* back substitution */ + dG[1] -= dG[0] * H[0][1]; + dG[2] -= dG[0] * H[0][2] + dG[1] * H[1][2]; + dG[3] -= dG[0] * H[0][3] + dG[1] * H[1][3] + dG[2] * H[2][3]; + /* scale */ + for (k = 0; k < 4; k++) + dG[k] /= H[k][k]; + /* back substitution */ + dG[2] -= dG[3] * H[2][3]; + dG[1] -= dG[3] * H[1][3] + dG[2] * H[1][2]; + dG[0] -= dG[3] * H[0][3] + dG[2] * H[0][2] + dG[1] * H[0][1]; + + /* update gains and check range */ + for (k = 0; k < 4; k++) { + gains[k] += dG[k]; + if (gains[k] > PITCH_MAX_GAIN) + gains[k] = PITCH_MAX_GAIN; + else if (gains[k] < 0.0) + gains[k] = 0.0; + } + } + + /* update state for next frame */ + WebRtcIsac_PitchfilterPre(Whitened, out, &(State->PFstr_wght), lags, gains); + + /* concatenate previous input's end and current input */ + memcpy(inbuf, State->inbuf, sizeof(double) * QLOOKAHEAD); + memcpy(inbuf+QLOOKAHEAD, in, sizeof(double) * PITCH_FRAME_LEN); + + /* lookahead pitch filtering for masking analysis */ + WebRtcIsac_PitchfilterPre_la(inbuf, out, &(State->PFstr), lags, gains); + + /* store last part of input */ + for (k = 0; k < QLOOKAHEAD; k++) + State->inbuf[k] = inbuf[k + PITCH_FRAME_LEN]; +} diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/pitch_estimator.h.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/pitch_estimator.h.svn-base new file mode 100644 index 0000000000..f5d93564be --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/pitch_estimator.h.svn-base @@ -0,0 +1,71 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * pitch_estimator.h + * + * Pitch functions + * + */ + +#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_PITCH_ESTIMATOR_H_ +#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_PITCH_ESTIMATOR_H_ + +#include "structs.h" + + + +void WebRtcIsac_PitchAnalysis(const double *in, /* PITCH_FRAME_LEN samples */ + double *out, /* PITCH_FRAME_LEN+QLOOKAHEAD samples */ + PitchAnalysisStruct *State, + double *lags, + double *gains); + +void WebRtcIsac_InitializePitch(const double *in, + const double old_lag, + const double old_gain, + PitchAnalysisStruct *State, + double *lags); + +void WebRtcIsac_PitchfilterPre(double *indat, + double *outdat, + PitchFiltstr *pfp, + double *lags, + double *gains); + +void WebRtcIsac_PitchfilterPost(double *indat, + double *outdat, + PitchFiltstr *pfp, + double *lags, + double *gains); + +void WebRtcIsac_PitchfilterPre_la(double *indat, + double *outdat, + PitchFiltstr *pfp, + double *lags, + double *gains); + +void WebRtcIsac_PitchfilterPre_gains(double *indat, + double *outdat, + double out_dG[][PITCH_FRAME_LEN + QLOOKAHEAD], + PitchFiltstr *pfp, + double *lags, + double *gains); + +void WebRtcIsac_WeightingFilter(const double *in, double *weiout, double *whiout, WeightFiltstr *wfdata); + +void WebRtcIsac_Highpass(const double *in, double *out, double *state, int N); + +void WebRtcIsac_DecimateAllpass(const double *in, + double *state_in, /* array of size: 2*ALLPASSSECTIONS+1 */ + int N, /* number of input samples */ + double *out); /* array of size N/2 */ + +#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_PITCH_ESTIMATOR_H_ */ diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/pitch_filter.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/pitch_filter.c.svn-base new file mode 100644 index 0000000000..ccc8d214da --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/pitch_filter.c.svn-base @@ -0,0 +1,469 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#include "pitch_estimator.h" +#include "os_specific_inline.h" + +#include +#include +#include + +static const double kDampFilter[PITCH_DAMPORDER] = {-0.07, 0.25, 0.64, 0.25, -0.07}; + +/* interpolation coefficients; generated by design_pitch_filter.m */ +static const double kIntrpCoef[PITCH_FRACS][PITCH_FRACORDER] = { + {-0.02239172458614, 0.06653315052934, -0.16515880017569, 0.60701333734125, 0.64671399919202, -0.20249000396417, 0.09926548334755, -0.04765933793109, 0.01754159521746}, + {-0.01985640750434, 0.05816126837866, -0.13991265473714, 0.44560418147643, 0.79117042386876, -0.20266133815188, 0.09585268418555, -0.04533310458084, 0.01654127246314}, + {-0.01463300534216, 0.04229888475060, -0.09897034715253, 0.28284326017787, 0.90385267956632, -0.16976950138649, 0.07704272393639, -0.03584218578311, 0.01295781500709}, + {-0.00764851320885, 0.02184035544377, -0.04985561057281, 0.13083306574393, 0.97545011664662, -0.10177807997561, 0.04400901776474, -0.02010737175166, 0.00719783432422}, + {-0.00000000000000, 0.00000000000000, -0.00000000000001, 0.00000000000001, 0.99999999999999, 0.00000000000001, -0.00000000000001, 0.00000000000000, -0.00000000000000}, + { 0.00719783432422, -0.02010737175166, 0.04400901776474, -0.10177807997562, 0.97545011664663, 0.13083306574393, -0.04985561057280, 0.02184035544377, -0.00764851320885}, + { 0.01295781500710, -0.03584218578312, 0.07704272393640, -0.16976950138650, 0.90385267956634, 0.28284326017785, -0.09897034715252, 0.04229888475059, -0.01463300534216}, + { 0.01654127246315, -0.04533310458085, 0.09585268418557, -0.20266133815190, 0.79117042386878, 0.44560418147640, -0.13991265473712, 0.05816126837865, -0.01985640750433} +}; + + +void WebRtcIsac_PitchfilterPre(double *indat, + double *outdat, + PitchFiltstr *pfp, + double *lags, + double *gains) +{ + + double ubuf[PITCH_INTBUFFSIZE]; + const double *fracoeff = NULL; + double curgain, curlag, gaindelta, lagdelta; + double sum, inystate[PITCH_DAMPORDER]; + double ftmp, oldlag, oldgain; + int k, n, m, pos, ind, pos2, Li, frc; + + Li = 0; + /* Set up buffer and states */ + memcpy(ubuf, pfp->ubuf, sizeof(double) * PITCH_BUFFSIZE); + memcpy(inystate, pfp->ystate, sizeof(double) * PITCH_DAMPORDER); + + oldlag = *pfp->oldlagp; + oldgain = *pfp->oldgainp; + + /* No interpolation if pitch lag step is big */ + if ((lags[0] > (PITCH_UPSTEP * oldlag)) || (lags[0] < (PITCH_DOWNSTEP * oldlag))) { + oldlag = lags[0]; + oldgain = gains[0]; + } + + ind=0; + for (k=0;k0;m--) + inystate[m] = inystate[m-1]; + + /* Filter to get fractional pitch */ + pos = ind + PITCH_BUFFSIZE; + pos2 = pos - Li; + sum=0; + for (m=0;mubuf, ubuf+PITCH_FRAME_LEN, sizeof(double) * PITCH_BUFFSIZE); + memcpy(pfp->ystate, inystate, sizeof(double) * PITCH_DAMPORDER); + + *pfp->oldlagp = oldlag; + *pfp->oldgainp = oldgain; + +} + + +void WebRtcIsac_PitchfilterPre_la(double *indat, + double *outdat, + PitchFiltstr *pfp, + double *lags, + double *gains) +{ + double ubuf[PITCH_INTBUFFSIZE+QLOOKAHEAD]; + const double *fracoeff = NULL; + double curgain, curlag, gaindelta, lagdelta; + double sum, inystate[PITCH_DAMPORDER]; + double ftmp; + double oldlag, oldgain; + int k, n, m, pos, ind, pos2, Li, frc; + + Li = 0; + /* Set up buffer and states */ + memcpy(ubuf, pfp->ubuf, sizeof(double) * PITCH_BUFFSIZE); + memcpy(inystate, pfp->ystate, sizeof(double) * PITCH_DAMPORDER); + + oldlag = *pfp->oldlagp; + oldgain = *pfp->oldgainp; + + /* No interpolation if pitch lag step is big */ + if ((lags[0] > (PITCH_UPSTEP * oldlag)) || (lags[0] < (PITCH_DOWNSTEP * oldlag))) { + oldlag = lags[0]; + oldgain = gains[0]; + } + + + ind=0; + for (k=0;k0;m--) + inystate[m] = inystate[m-1]; + + /* Filter to get fractional pitch */ + pos = ind + PITCH_BUFFSIZE; + pos2 = pos - Li; + sum=0.0; + for (m=0;mubuf, ubuf+PITCH_FRAME_LEN, sizeof(double) * PITCH_BUFFSIZE); + memcpy(pfp->ystate, inystate, sizeof(double) * PITCH_DAMPORDER); + + *pfp->oldlagp = oldlag; + *pfp->oldgainp = oldgain; + + + /* Filter look-ahead segment */ + for (n=0;n0;m--) + inystate[m] = inystate[m-1]; + + /* Filter to get fractional pitch */ + pos = ind + PITCH_BUFFSIZE; + pos2 = pos - Li; + sum=0.0; + for (m=0;mubuf, sizeof(double) * PITCH_BUFFSIZE); + memcpy(inystate, pfp->ystate, sizeof(double) * PITCH_DAMPORDER); + + /* clear some buffers */ + for (k = 0; k < 4; k++) { + gain_mult[k] = 0.0; + for (n = 0; n < PITCH_DAMPORDER; n++) + inystate_dG[k][n] = 0.0; + } + + oldlag = *pfp->oldlagp; + oldgain = *pfp->oldgainp; + + /* No interpolation if pitch lag step is big */ + if ((lags[0] > (PITCH_UPSTEP * oldlag)) || (lags[0] < (PITCH_DOWNSTEP * oldlag))) { + oldlag = lags[0]; + oldgain = gains[0]; + gain_mult[0] = 1.0; + } + + + ind=0; + for (k=0;k 1.0) gain_mult[k] = 1.0; + if (k > 0) gain_mult[k-1] -= 0.2; + } + + /* shift low pass filter states */ + for (m=PITCH_DAMPORDER-1;m>0;m--) { + inystate[m] = inystate[m-1]; + for (j = 0; j < 4; j++) + inystate_dG[j][m] = inystate_dG[j][m-1]; + } + + pos = ind + PITCH_BUFFSIZE; + pos2 = pos - Li; + + /* Filter to get fractional pitch */ + sum=0.0; + for (m=0;m 0) ? Li-ind : 0; + for (j = 0; j < k+1; j++) { + /* filter */ + sum2 = 0.0; + for (m = PITCH_FRACORDER-1; m >= m_tmp; m--) + sum2 += out_dG[j][ind-Li + m] * fracoeff[m]; + inystate_dG[j][0] = gain_mult[j] * sum + curgain * sum2; + } + + /* Low pass filter */ + sum=0.0; + for (m=0;m0;m--) { + inystate[m] = inystate[m-1]; + for (j = 0; j < 4; j++) + inystate_dG[j][m] = inystate_dG[j][m-1]; + } + + pos = ind + PITCH_BUFFSIZE; + pos2 = pos - Li; + + /* Filter to get fractional pitch */ + sum=0.0; + for (m=0;m 0) ? Li-ind : 0; + for (j = 0; (j= m_tmp; m--) + sum2 += out_dG[j][ind-Li + m] * fracoeff[m]; + inystate_dG[j][0] = gain_mult[j] * sum + curgain * sum2; + } + + /* Low pass filter */ + sum=0.0; + for (m=0;mubuf, sizeof(double) * PITCH_BUFFSIZE); + memcpy(inystate, pfp->ystate, sizeof(double) * PITCH_DAMPORDER); + + oldlag = *pfp->oldlagp; + oldgain = *pfp->oldgainp; + + /* make output more periodic */ + for (k=0;k (PITCH_UPSTEP * oldlag)) || (lags[0] < (PITCH_DOWNSTEP * oldlag))) { + oldlag = lags[0]; + oldgain = gains[0]; + } + + + ind=0; + for (k=0;k0;m--) + inystate[m] = inystate[m-1]; + + /* Filter to get fractional pitch */ + pos = ind + PITCH_BUFFSIZE; + pos2 = pos - Li; + sum=0.0; + for (m=0;mubuf, ubuf+PITCH_FRAME_LEN, sizeof(double) * PITCH_BUFFSIZE); + memcpy(pfp->ystate, inystate, sizeof(double) * PITCH_DAMPORDER); + + *pfp->oldlagp = oldlag; + *pfp->oldgainp = oldgain; + +} diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/pitch_gain_tables.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/pitch_gain_tables.c.svn-base new file mode 100644 index 0000000000..5d998a2928 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/pitch_gain_tables.c.svn-base @@ -0,0 +1,105 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#include "pitch_gain_tables.h" + +#include "settings.h" + +/* header file for coding tables for the pitch filter side-info in the entropy coder */ +/********************* Pitch Filter Gain Coefficient Tables ************************/ +/* cdf for quantized pitch filter gains */ +const WebRtc_UWord16 WebRtcIsac_kQPitchGainCdf[255] = { + 0, 2, 4, 6, 64, 901, 903, 905, 16954, 16956, + 16961, 17360, 17362, 17364, 17366, 17368, 17370, 17372, 17374, 17411, + 17514, 17516, 17583, 18790, 18796, 18802, 20760, 20777, 20782, 21722, + 21724, 21728, 21738, 21740, 21742, 21744, 21746, 21748, 22224, 22227, + 22230, 23214, 23229, 23239, 25086, 25108, 25120, 26088, 26094, 26098, + 26175, 26177, 26179, 26181, 26183, 26185, 26484, 26507, 26522, 27705, + 27731, 27750, 29767, 29799, 29817, 30866, 30883, 30885, 31025, 31029, + 31031, 31033, 31035, 31037, 31114, 31126, 31134, 32687, 32722, 32767, + 35718, 35742, 35757, 36943, 36952, 36954, 37115, 37128, 37130, 37132, + 37134, 37136, 37143, 37145, 37152, 38843, 38863, 38897, 47458, 47467, + 47474, 49040, 49061, 49063, 49145, 49157, 49159, 49161, 49163, 49165, + 49167, 49169, 49171, 49757, 49770, 49782, 61333, 61344, 61346, 62860, + 62883, 62885, 62887, 62889, 62891, 62893, 62895, 62897, 62899, 62901, + 62903, 62905, 62907, 62909, 65496, 65498, 65500, 65521, 65523, 65525, + 65527, 65529, 65531, 65533, 65535, 65535, 65535, 65535, 65535, 65535, + 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, + 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, + 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, + 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, + 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, + 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, + 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, + 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, + 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, + 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, + 65535, 65535, 65535, 65535, 65535}; + +/* index limits and ranges */ +const WebRtc_Word16 WebRtcIsac_kIndexLowerLimitGain[3] = { + -7, -2, -1}; + +const WebRtc_Word16 WebRtcIsac_kIndexUpperLimitGain[3] = { + 0, 3, 1}; + +const WebRtc_UWord16 WebRtcIsac_kIndexMultsGain[2] = { + 18, 3}; + +/* size of cdf table */ +const WebRtc_UWord16 WebRtcIsac_kQCdfTableSizeGain[1] = { + 256}; + +///////////////////////////FIXED POINT +/* mean values of pitch filter gains in FIXED point */ +const WebRtc_Word16 WebRtcIsac_kQMeanGain1Q12[144] = { + 843, 1092, 1336, 1222, 1405, 1656, 1500, 1815, 1843, 1838, 1839, 1843, 1843, 1843, 1843, 1843, + 1843, 1843, 814, 846, 1092, 1013, 1174, 1383, 1391, 1511, 1584, 1734, 1753, 1843, 1843, 1843, + 1843, 1843, 1843, 1843, 524, 689, 777, 845, 947, 1069, 1090, 1263, 1380, 1447, 1559, 1676, + 1645, 1749, 1843, 1843, 1843, 1843, 81, 477, 563, 611, 706, 806, 849, 1012, 1192, 1128, + 1330, 1489, 1425, 1576, 1826, 1741, 1843, 1843, 0, 290, 305, 356, 488, 575, 602, 741, + 890, 835, 1079, 1196, 1182, 1376, 1519, 1506, 1680, 1843, 0, 47, 97, 69, 289, 381, + 385, 474, 617, 664, 803, 1079, 935, 1160, 1269, 1265, 1506, 1741, 0, 0, 0, 0, + 112, 120, 190, 283, 442, 343, 526, 809, 684, 935, 1134, 1020, 1265, 1506, 0, 0, + 0, 0, 0, 0, 0, 111, 256, 87, 373, 597, 430, 684, 935, 770, 1020, 1265}; + +const WebRtc_Word16 WebRtcIsac_kQMeanGain2Q12[144] = { + 1760, 1525, 1285, 1747, 1671, 1393, 1843, 1826, 1555, 1843, 1784, 1606, 1843, 1843, 1711, 1843, + 1843, 1814, 1389, 1275, 1040, 1564, 1414, 1252, 1610, 1495, 1343, 1753, 1592, 1405, 1804, 1720, + 1475, 1843, 1814, 1581, 1208, 1061, 856, 1349, 1148, 994, 1390, 1253, 1111, 1495, 1343, 1178, + 1770, 1465, 1234, 1814, 1581, 1342, 1040, 793, 713, 1053, 895, 737, 1128, 1003, 861, 1277, + 1094, 981, 1475, 1192, 1019, 1581, 1342, 1098, 855, 570, 483, 833, 648, 540, 948, 744, + 572, 1009, 844, 636, 1234, 934, 685, 1342, 1217, 984, 537, 318, 124, 603, 423, 350, + 687, 479, 322, 791, 581, 430, 987, 671, 488, 1098, 849, 597, 283, 27, 0, 397, + 222, 38, 513, 271, 124, 624, 325, 157, 737, 484, 233, 849, 597, 343, 27, 0, + 0, 141, 0, 0, 256, 69, 0, 370, 87, 0, 484, 229, 0, 597, 343, 87}; + +const WebRtc_Word16 WebRtcIsac_kQMeanGain3Q12[144] = { + 1843, 1843, 1711, 1843, 1818, 1606, 1843, 1827, 1511, 1814, 1639, 1393, 1760, 1525, 1285, 1656, + 1419, 1176, 1835, 1718, 1475, 1841, 1650, 1387, 1648, 1498, 1287, 1600, 1411, 1176, 1522, 1299, + 1040, 1419, 1176, 928, 1773, 1461, 1128, 1532, 1355, 1202, 1429, 1260, 1115, 1398, 1151, 1025, + 1172, 1080, 790, 1176, 928, 677, 1475, 1147, 1019, 1276, 1096, 922, 1214, 1010, 901, 1057, + 893, 800, 1040, 796, 734, 928, 677, 424, 1137, 897, 753, 1120, 830, 710, 875, 751, + 601, 795, 642, 583, 790, 544, 475, 677, 474, 140, 987, 750, 482, 697, 573, 450, + 691, 487, 303, 661, 394, 332, 537, 303, 220, 424, 168, 0, 737, 484, 229, 624, + 348, 153, 441, 261, 136, 397, 166, 51, 283, 27, 0, 168, 0, 0, 484, 229, + 0, 370, 57, 0, 256, 43, 0, 141, 0, 0, 27, 0, 0, 0, 0, 0}; + + +const WebRtc_Word16 WebRtcIsac_kQMeanGain4Q12[144] = { + 1843, 1843, 1843, 1843, 1841, 1843, 1500, 1821, 1843, 1222, 1434, 1656, 843, 1092, 1336, 504, + 757, 1007, 1843, 1843, 1843, 1838, 1791, 1843, 1265, 1505, 1599, 965, 1219, 1425, 730, 821, + 1092, 249, 504, 757, 1783, 1819, 1843, 1351, 1567, 1727, 1096, 1268, 1409, 805, 961, 1131, + 444, 670, 843, 0, 249, 504, 1425, 1655, 1743, 1096, 1324, 1448, 822, 1019, 1199, 490, + 704, 867, 81, 450, 555, 0, 0, 249, 1247, 1428, 1530, 881, 1073, 1283, 610, 759, + 939, 278, 464, 645, 0, 200, 270, 0, 0, 0, 935, 1163, 1410, 528, 790, 1068, + 377, 499, 717, 173, 240, 274, 0, 43, 62, 0, 0, 0, 684, 935, 1182, 343, + 551, 735, 161, 262, 423, 0, 55, 27, 0, 0, 0, 0, 0, 0, 430, 684, + 935, 87, 377, 597, 0, 46, 256, 0, 0, 0, 0, 0, 0, 0, 0, 0}; diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/pitch_gain_tables.h.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/pitch_gain_tables.h.svn-base new file mode 100644 index 0000000000..f958f5df45 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/pitch_gain_tables.h.svn-base @@ -0,0 +1,45 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * pitch_gain_tables.h + * + * This file contains tables for the pitch filter side-info in the entropy coder. + * + */ + +#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_PITCH_GAIN_TABLES_H_ +#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_PITCH_GAIN_TABLES_H_ + +#include "typedefs.h" + +/* header file for coding tables for the pitch filter side-info in the entropy coder */ +/********************* Pitch Filter Gain Coefficient Tables ************************/ +/* cdf for quantized pitch filter gains */ +extern const WebRtc_UWord16 WebRtcIsac_kQPitchGainCdf[255]; + +/* index limits and ranges */ +extern const WebRtc_Word16 WebRtcIsac_kIndexLowerLimitGain[3]; + +extern const WebRtc_Word16 WebRtcIsac_kIndexUpperLimitGain[3]; +extern const WebRtc_UWord16 WebRtcIsac_kIndexMultsGain[2]; + +/* mean values of pitch filter gains */ +//(Y) +extern const WebRtc_Word16 WebRtcIsac_kQMeanGain1Q12[144]; +extern const WebRtc_Word16 WebRtcIsac_kQMeanGain2Q12[144]; +extern const WebRtc_Word16 WebRtcIsac_kQMeanGain3Q12[144]; +extern const WebRtc_Word16 WebRtcIsac_kQMeanGain4Q12[144]; +//(Y) + +/* size of cdf table */ +extern const WebRtc_UWord16 WebRtcIsac_kQCdfTableSizeGain[1]; + +#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_PITCH_GAIN_TABLES_H_ */ diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/pitch_lag_tables.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/pitch_lag_tables.c.svn-base new file mode 100644 index 0000000000..72a031e227 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/pitch_lag_tables.c.svn-base @@ -0,0 +1,277 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#include "pitch_lag_tables.h" +#include "settings.h" + +/* header file for coding tables for the pitch filter side-info in the entropy coder */ +/********************* Pitch Filter Gain Coefficient Tables ************************/ + +/* tables for use with small pitch gain */ + +/* cdf for quantized pitch filter lags */ +const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf1Lo[127] = { + 0, 134, 336, 549, 778, 998, 1264, 1512, 1777, 2070, + 2423, 2794, 3051, 3361, 3708, 3979, 4315, 4610, 4933, 5269, + 5575, 5896, 6155, 6480, 6816, 7129, 7477, 7764, 8061, 8358, + 8718, 9020, 9390, 9783, 10177, 10543, 10885, 11342, 11795, 12213, + 12680, 13096, 13524, 13919, 14436, 14903, 15349, 15795, 16267, 16734, + 17266, 17697, 18130, 18632, 19080, 19447, 19884, 20315, 20735, 21288, + 21764, 22264, 22723, 23193, 23680, 24111, 24557, 25022, 25537, 26082, + 26543, 27090, 27620, 28139, 28652, 29149, 29634, 30175, 30692, 31273, + 31866, 32506, 33059, 33650, 34296, 34955, 35629, 36295, 36967, 37726, + 38559, 39458, 40364, 41293, 42256, 43215, 44231, 45253, 46274, 47359, + 48482, 49678, 50810, 51853, 53016, 54148, 55235, 56263, 57282, 58363, + 59288, 60179, 61076, 61806, 62474, 63129, 63656, 64160, 64533, 64856, + 65152, 65535, 65535, 65535, 65535, 65535, 65535}; + +const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf2Lo[20] = { + 0, 429, 3558, 5861, 8558, 11639, 15210, 19502, 24773, 31983, + 42602, 48567, 52601, 55676, 58160, 60172, 61889, 63235, 65383, 65535}; + +const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf3Lo[2] = { + 0, 65535}; + +const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf4Lo[10] = { + 0, 2966, 6368, 11182, 19431, 37793, 48532, 55353, 60626, 65535}; + +const WebRtc_UWord16 *WebRtcIsac_kQPitchLagCdfPtrLo[4] = {WebRtcIsac_kQPitchLagCdf1Lo, WebRtcIsac_kQPitchLagCdf2Lo, WebRtcIsac_kQPitchLagCdf3Lo, WebRtcIsac_kQPitchLagCdf4Lo}; + +/* size of first cdf table */ +const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdfSizeLo[1] = {128}; + +/* index limits and ranges */ +const WebRtc_Word16 WebRtcIsac_kQIndexLowerLimitLagLo[4] = { +-140, -9, 0, -4}; + +const WebRtc_Word16 WebRtcIsac_kQIndexUpperLimitLagLo[4] = { +-20, 9, 0, 4}; + +/* initial index for arithmetic decoder */ +const WebRtc_UWord16 WebRtcIsac_kQInitIndexLagLo[3] = { + 10, 1, 5}; + +/* mean values of pitch filter lags */ +const double WebRtcIsac_kQMeanLag2Lo[19] = { +-17.21385070, -15.82678944, -14.07123081, -12.03003877, -10.01311864, -8.00794627, -5.91162987, -3.89231876, -1.90220980, -0.01879275, + 1.89144232, 3.88123171, 5.92146992, 7.96435361, 9.98923648, 11.98266347, 13.96101002, 15.74855713, 17.10976611}; + +const double WebRtcIsac_kQMeanLag3Lo[1] = { + 0.00000000}; + +const double WebRtcIsac_kQMeanLag4Lo[9] = { +-7.76246496, -5.92083980, -3.94095226, -1.89502305, 0.03724681, 1.93054221, 3.96443467, 5.91726366, 7.78434291}; + +const double WebRtcIsac_kQPitchLagStepsizeLo = 2.000000; + + +/* tables for use with medium pitch gain */ + +/* cdf for quantized pitch filter lags */ +const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf1Mid[255] = { + 0, 28, 61, 88, 121, 149, 233, 331, 475, 559, + 624, 661, 689, 712, 745, 791, 815, 843, 866, 922, + 959, 1024, 1061, 1117, 1178, 1238, 1280, 1350, 1453, 1513, + 1564, 1625, 1671, 1741, 1788, 1904, 2072, 2421, 2626, 2770, + 2840, 2900, 2942, 3012, 3068, 3115, 3147, 3194, 3254, 3319, + 3366, 3520, 3678, 3780, 3850, 3911, 3957, 4032, 4106, 4185, + 4292, 4474, 4683, 4842, 5019, 5191, 5321, 5428, 5540, 5675, + 5763, 5847, 5959, 6127, 6304, 6564, 6839, 7090, 7263, 7421, + 7556, 7728, 7872, 7984, 8142, 8361, 8580, 8743, 8938, 9227, + 9409, 9539, 9674, 9795, 9930, 10060, 10177, 10382, 10614, 10861, + 11038, 11271, 11415, 11629, 11792, 12044, 12193, 12416, 12574, 12821, + 13007, 13235, 13445, 13654, 13901, 14134, 14488, 15000, 15703, 16285, + 16504, 16797, 17086, 17328, 17579, 17807, 17998, 18268, 18538, 18836, + 19087, 19274, 19474, 19716, 19935, 20270, 20833, 21303, 21532, 21741, + 21978, 22207, 22523, 22770, 23054, 23613, 23943, 24204, 24399, 24651, + 24832, 25074, 25270, 25549, 25759, 26015, 26150, 26424, 26713, 27048, + 27342, 27504, 27681, 27854, 28021, 28207, 28412, 28664, 28859, 29064, + 29278, 29548, 29748, 30107, 30377, 30656, 30856, 31164, 31452, 31755, + 32011, 32328, 32626, 32919, 33319, 33789, 34329, 34925, 35396, 35973, + 36443, 36964, 37551, 38156, 38724, 39357, 40023, 40908, 41587, 42602, + 43924, 45037, 45810, 46597, 47421, 48291, 49092, 50051, 51448, 52719, + 53440, 54241, 54944, 55977, 56676, 57299, 57872, 58389, 59059, 59688, + 60237, 60782, 61094, 61573, 61890, 62290, 62658, 63030, 63217, 63454, + 63622, 63882, 64003, 64273, 64427, 64529, 64581, 64697, 64758, 64902, + 65414, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, + 65535, 65535, 65535, 65535, 65535}; + +const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf2Mid[36] = { + 0, 71, 335, 581, 836, 1039, 1323, 1795, 2258, 2608, + 3005, 3591, 4243, 5344, 7163, 10583, 16848, 28078, 49448, 57007, + 60357, 61850, 62837, 63437, 63872, 64188, 64377, 64614, 64774, 64949, + 65039, 65115, 65223, 65360, 65474, 65535}; + +const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf3Mid[2] = { + 0, 65535}; + +const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf4Mid[20] = { + 0, 28, 246, 459, 667, 1045, 1523, 2337, 4337, 11347, + 44231, 56709, 60781, 62243, 63161, 63969, 64608, 65062, 65502, 65535}; + +const WebRtc_UWord16 *WebRtcIsac_kQPitchLagCdfPtrMid[4] = {WebRtcIsac_kQPitchLagCdf1Mid, WebRtcIsac_kQPitchLagCdf2Mid, WebRtcIsac_kQPitchLagCdf3Mid, WebRtcIsac_kQPitchLagCdf4Mid}; + +/* size of first cdf table */ +const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdfSizeMid[1] = {256}; + +/* index limits and ranges */ +const WebRtc_Word16 WebRtcIsac_kQIndexLowerLimitLagMid[4] = { +-280, -17, 0, -9}; + +const WebRtc_Word16 WebRtcIsac_kQIndexUpperLimitLagMid[4] = { +-40, 17, 0, 9}; + +/* initial index for arithmetic decoder */ +const WebRtc_UWord16 WebRtcIsac_kQInitIndexLagMid[3] = { + 18, 1, 10}; + +/* mean values of pitch filter lags */ +const double WebRtcIsac_kQMeanLag2Mid[35] = { +-16.89183900, -15.86949778, -15.05476653, -14.00664348, -13.02793036, -12.07324237, -11.00542532, -10.11250602, -8.90792971, -8.02474753, +-7.00426767, -5.94055287, -4.98251338, -3.91053158, -2.98820425, -1.93524245, -0.92978085, -0.01722509, 0.91317387, 1.92973955, + 2.96908851, 3.93728974, 4.96308471, 5.92244151, 7.08673497, 8.00993708, 9.04656316, 9.98538742, 10.97851694, 11.94772884, + 13.02426166, 14.00039951, 15.01347042, 15.80758023, 16.94086895}; + +const double WebRtcIsac_kQMeanLag3Mid[1] = { + 0.00000000}; + +const double WebRtcIsac_kQMeanLag4Mid[19] = { +-8.60409403, -7.89198395, -7.03450280, -5.86260421, -4.93822322, -3.93078706, -2.91302322, -1.91824007, -0.87003282, 0.02822649, + 0.89951758, 1.87495484, 2.91802604, 3.96874074, 5.06571703, 5.93618227, 7.00520185, 7.88497726, 8.64160364}; + +const double WebRtcIsac_kQPitchLagStepsizeMid = 1.000000; + + +/* tables for use with large pitch gain */ + +/* cdf for quantized pitch filter lags */ +const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf1Hi[511] = { + 0, 7, 18, 33, 69, 105, 156, 228, 315, 612, + 680, 691, 709, 724, 735, 738, 742, 746, 749, 753, + 756, 760, 764, 774, 782, 785, 789, 796, 800, 803, + 807, 814, 818, 822, 829, 832, 847, 854, 858, 869, + 876, 883, 898, 908, 934, 977, 1010, 1050, 1060, 1064, + 1075, 1078, 1086, 1089, 1093, 1104, 1111, 1122, 1133, 1136, + 1151, 1162, 1183, 1209, 1252, 1281, 1339, 1364, 1386, 1401, + 1411, 1415, 1426, 1430, 1433, 1440, 1448, 1455, 1462, 1477, + 1487, 1495, 1502, 1506, 1509, 1516, 1524, 1531, 1535, 1542, + 1553, 1556, 1578, 1589, 1611, 1625, 1639, 1643, 1654, 1665, + 1672, 1687, 1694, 1705, 1708, 1719, 1730, 1744, 1752, 1759, + 1791, 1795, 1820, 1867, 1886, 1915, 1936, 1943, 1965, 1987, + 2041, 2099, 2161, 2175, 2200, 2211, 2226, 2233, 2244, 2251, + 2266, 2280, 2287, 2298, 2309, 2316, 2331, 2342, 2356, 2378, + 2403, 2418, 2447, 2497, 2544, 2602, 2863, 2895, 2903, 2935, + 2950, 2971, 3004, 3011, 3018, 3029, 3040, 3062, 3087, 3127, + 3152, 3170, 3199, 3243, 3293, 3322, 3340, 3377, 3402, 3427, + 3474, 3518, 3543, 3579, 3601, 3637, 3659, 3706, 3731, 3760, + 3818, 3847, 3869, 3901, 3920, 3952, 4068, 4169, 4220, 4271, + 4524, 4571, 4604, 4632, 4672, 4730, 4777, 4806, 4857, 4904, + 4951, 5002, 5031, 5060, 5107, 5150, 5212, 5266, 5331, 5382, + 5432, 5490, 5544, 5610, 5700, 5762, 5812, 5874, 5972, 6022, + 6091, 6163, 6232, 6305, 6402, 6540, 6685, 6880, 7090, 7271, + 7379, 7452, 7542, 7625, 7687, 7770, 7843, 7911, 7966, 8024, + 8096, 8190, 8252, 8320, 8411, 8501, 8585, 8639, 8751, 8842, + 8918, 8986, 9066, 9127, 9203, 9269, 9345, 9406, 9464, 9536, + 9612, 9667, 9735, 9844, 9931, 10036, 10119, 10199, 10260, 10358, + 10441, 10514, 10666, 10734, 10872, 10951, 11053, 11125, 11223, 11324, + 11516, 11664, 11737, 11816, 11892, 12008, 12120, 12200, 12280, 12392, + 12490, 12576, 12685, 12812, 12917, 13003, 13108, 13210, 13300, 13384, + 13470, 13579, 13673, 13771, 13879, 13999, 14136, 14201, 14368, 14614, + 14759, 14867, 14958, 15030, 15121, 15189, 15280, 15385, 15461, 15555, + 15653, 15768, 15884, 15971, 16069, 16145, 16210, 16279, 16380, 16463, + 16539, 16615, 16688, 16818, 16919, 17017, 18041, 18338, 18523, 18649, + 18790, 18917, 19047, 19167, 19315, 19460, 19601, 19731, 19858, 20068, + 20173, 20318, 20466, 20625, 20741, 20911, 21045, 21201, 21396, 21588, + 21816, 22022, 22305, 22547, 22786, 23072, 23322, 23600, 23879, 24168, + 24433, 24769, 25120, 25511, 25895, 26289, 26792, 27219, 27683, 28077, + 28566, 29094, 29546, 29977, 30491, 30991, 31573, 32105, 32594, 33173, + 33788, 34497, 35181, 35833, 36488, 37255, 37921, 38645, 39275, 39894, + 40505, 41167, 41790, 42431, 43096, 43723, 44385, 45134, 45858, 46607, + 47349, 48091, 48768, 49405, 49955, 50555, 51167, 51985, 52611, 53078, + 53494, 53965, 54435, 54996, 55601, 56125, 56563, 56838, 57244, 57566, + 57967, 58297, 58771, 59093, 59419, 59647, 59886, 60143, 60461, 60693, + 60917, 61170, 61416, 61634, 61891, 62122, 62310, 62455, 62632, 62839, + 63103, 63436, 63639, 63805, 63906, 64015, 64192, 64355, 64475, 64558, + 64663, 64742, 64811, 64865, 64916, 64956, 64981, 65025, 65068, 65115, + 65195, 65314, 65419, 65535, 65535, 65535, 65535, 65535, 65535, 65535, + 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, + 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, + 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, + 65535}; + +const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf2Hi[68] = { + 0, 7, 11, 22, 37, 52, 56, 59, 81, 85, + 89, 96, 115, 130, 137, 152, 170, 181, 193, 200, + 207, 233, 237, 259, 289, 318, 363, 433, 592, 992, + 1607, 3062, 6149, 12206, 25522, 48368, 58223, 61918, 63640, 64584, + 64943, 65098, 65206, 65268, 65294, 65335, 65350, 65372, 65387, 65402, + 65413, 65420, 65428, 65435, 65439, 65450, 65454, 65468, 65472, 65476, + 65483, 65491, 65498, 65505, 65516, 65520, 65528, 65535}; + +const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf3Hi[2] = { + 0, 65535}; + +const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf4Hi[35] = { + 0, 7, 19, 30, 41, 48, 63, 74, 82, 96, + 122, 152, 215, 330, 701, 2611, 10931, 48106, 61177, 64341, + 65112, 65238, 65309, 65338, 65364, 65379, 65401, 65427, 65453, 65465, + 65476, 65490, 65509, 65528, 65535}; + +const WebRtc_UWord16 *WebRtcIsac_kQPitchLagCdfPtrHi[4] = {WebRtcIsac_kQPitchLagCdf1Hi, WebRtcIsac_kQPitchLagCdf2Hi, WebRtcIsac_kQPitchLagCdf3Hi, WebRtcIsac_kQPitchLagCdf4Hi}; + +/* size of first cdf table */ +const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdfSizeHi[1] = {512}; + +/* index limits and ranges */ +const WebRtc_Word16 WebRtcIsac_kQindexLowerLimitLagHi[4] = { +-552, -34, 0, -16}; + +const WebRtc_Word16 WebRtcIsac_kQindexUpperLimitLagHi[4] = { +-80, 32, 0, 17}; + +/* initial index for arithmetic decoder */ +const WebRtc_UWord16 WebRtcIsac_kQInitIndexLagHi[3] = { + 34, 1, 18}; + +/* mean values of pitch filter lags */ +const double WebRtcIsac_kQMeanLag2Hi[67] = { +-17.07263295, -16.50000000, -15.83966081, -15.55613708, -14.96948007, -14.50000000, -14.00000000, -13.48377986, -13.00000000, -12.50000000, +-11.93199636, -11.44530414, -11.04197641, -10.39910301, -10.15202337, -9.51322461, -8.93357741, -8.46456632, -8.10270672, -7.53751847, +-6.98686404, -6.50000000, -6.08463150, -5.46872991, -5.00864717, -4.50163760, -4.01382410, -3.43856708, -2.96898001, -2.46554810, +-1.96861004, -1.47106701, -0.97197237, -0.46561654, -0.00531409, 0.45767857, 0.96777907, 1.47507903, 1.97740425, 2.46695420, + 3.00695774, 3.47167185, 4.02712538, 4.49280007, 5.01087640, 5.48191963, 6.04916550, 6.51511058, 6.97297819, 7.46565499, + 8.01489405, 8.39912001, 8.91819757, 9.50000000, 10.11654065, 10.50000000, 11.03712583, 11.50000000, 12.00000000, 12.38964346, + 12.89466127, 13.43657881, 13.96013840, 14.46279912, 15.00000000, 15.39412269, 15.96662441}; + +const double WebRtcIsac_kQMeanLag3Hi[1] = { + 0.00000000}; + +const double WebRtcIsac_kQMeanLag4Hi[34] = { +-7.98331221, -7.47988769, -7.03626557, -6.52708003, -6.06982173, -5.51856292, -5.05827033, -4.45909878, -3.99125864, -3.45308135, +-3.02328139, -2.47297273, -1.94341995, -1.44699056, -0.93612243, -0.43012406, 0.01120357, 0.44054812, 0.93199883, 1.45669587, + 1.97218322, 2.50187419, 2.98748690, 3.49343202, 4.01660147, 4.50984306, 5.01402683, 5.58936797, 5.91787793, 6.59998900, + 6.85034315, 7.53503316, 7.87711194, 8.53631648}; + +const double WebRtcIsac_kQPitchLagStepsizeHi = 0.500000; + +/* transform matrix */ +const double WebRtcIsac_kTransform[4][4] = { +{-0.50000000, -0.50000000, -0.50000000, -0.50000000}, +{ 0.67082039, 0.22360680, -0.22360680, -0.67082039}, +{ 0.50000000, -0.50000000, -0.50000000, 0.50000000}, +{ 0.22360680, -0.67082039, 0.67082039, -0.22360680}}; + +/* transpose transform matrix */ +const double WebRtcIsac_kTransformTranspose[4][4] = { +{-0.50000000, 0.67082039, 0.50000000, 0.22360680}, +{-0.50000000, 0.22360680, -0.50000000, -0.67082039}, +{-0.50000000, -0.22360680, -0.50000000, 0.67082039}, +{-0.50000000, -0.67082039, 0.50000000, -0.22360680}}; + diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/pitch_lag_tables.h.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/pitch_lag_tables.h.svn-base new file mode 100644 index 0000000000..67b02e5e4d --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/pitch_lag_tables.h.svn-base @@ -0,0 +1,114 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * pitch_lag_tables.h + * + * This file contains tables for the pitch filter side-info in the entropy coder. + * + */ + +#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_PITCH_LAG_TABLES_H_ +#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_PITCH_LAG_TABLES_H_ + +#include "typedefs.h" +/* header file for coding tables for the pitch filter side-info in the entropy coder */ +/********************* Pitch Filter Lag Coefficient Tables ************************/ + +/* tables for use with small pitch gain */ + +/* cdfs for quantized pitch lags */ +extern const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf1Lo[127]; +extern const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf2Lo[20]; +extern const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf3Lo[2]; +extern const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf4Lo[10]; + +extern const WebRtc_UWord16 *WebRtcIsac_kQPitchLagCdfPtrLo[4]; + +/* size of first cdf table */ +extern const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdfSizeLo[1]; + +/* index limits and ranges */ +extern const WebRtc_Word16 WebRtcIsac_kQIndexLowerLimitLagLo[4]; +extern const WebRtc_Word16 WebRtcIsac_kQIndexUpperLimitLagLo[4]; + +/* initial index for arithmetic decoder */ +extern const WebRtc_UWord16 WebRtcIsac_kQInitIndexLagLo[3]; + +/* mean values of pitch filter lags */ +extern const double WebRtcIsac_kQMeanLag2Lo[19]; +extern const double WebRtcIsac_kQMeanLag3Lo[1]; +extern const double WebRtcIsac_kQMeanLag4Lo[9]; + +extern const double WebRtcIsac_kQPitchLagStepsizeLo; + + +/* tables for use with medium pitch gain */ + +/* cdfs for quantized pitch lags */ +extern const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf1Mid[255]; +extern const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf2Mid[36]; +extern const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf3Mid[2]; +extern const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf4Mid[20]; + +extern const WebRtc_UWord16 *WebRtcIsac_kQPitchLagCdfPtrMid[4]; + +/* size of first cdf table */ +extern const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdfSizeMid[1]; + +/* index limits and ranges */ +extern const WebRtc_Word16 WebRtcIsac_kQIndexLowerLimitLagMid[4]; +extern const WebRtc_Word16 WebRtcIsac_kQIndexUpperLimitLagMid[4]; + +/* initial index for arithmetic decoder */ +extern const WebRtc_UWord16 WebRtcIsac_kQInitIndexLagMid[3]; + +/* mean values of pitch filter lags */ +extern const double WebRtcIsac_kQMeanLag2Mid[35]; +extern const double WebRtcIsac_kQMeanLag3Mid[1]; +extern const double WebRtcIsac_kQMeanLag4Mid[19]; + +extern const double WebRtcIsac_kQPitchLagStepsizeMid; + + +/* tables for use with large pitch gain */ + +/* cdfs for quantized pitch lags */ +extern const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf1Hi[511]; +extern const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf2Hi[68]; +extern const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf3Hi[2]; +extern const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf4Hi[35]; + +extern const WebRtc_UWord16 *WebRtcIsac_kQPitchLagCdfPtrHi[4]; + +/* size of first cdf table */ +extern const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdfSizeHi[1]; + +/* index limits and ranges */ +extern const WebRtc_Word16 WebRtcIsac_kQindexLowerLimitLagHi[4]; +extern const WebRtc_Word16 WebRtcIsac_kQindexUpperLimitLagHi[4]; + +/* initial index for arithmetic decoder */ +extern const WebRtc_UWord16 WebRtcIsac_kQInitIndexLagHi[3]; + +/* mean values of pitch filter lags */ +extern const double WebRtcIsac_kQMeanLag2Hi[67]; +extern const double WebRtcIsac_kQMeanLag3Hi[1]; +extern const double WebRtcIsac_kQMeanLag4Hi[34]; + +extern const double WebRtcIsac_kQPitchLagStepsizeHi; + +/* transform matrix */ +extern const double WebRtcIsac_kTransform[4][4]; + +/* transpose transform matrix */ +extern const double WebRtcIsac_kTransformTranspose[4][4]; + +#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_PITCH_LAG_TABLES_H_ */ diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/settings.h.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/settings.h.svn-base new file mode 100644 index 0000000000..b7aed77065 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/settings.h.svn-base @@ -0,0 +1,199 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * settings.h + * + * Declaration of #defines used in the iSAC codec + * + */ + +#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_SETTINGS_H_ +#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_SETTINGS_H_ + +/* sampling frequency (Hz) */ +#define FS 16000 + +/* number of samples per frame (either 320 (20ms), 480 (30ms) or 960 (60ms)) */ +#define INITIAL_FRAMESAMPLES 960 + + +#define MAXFFTSIZE 2048 +#define NFACTOR 11 + + + +/* do not modify the following; this will have to be modified if we have a 20ms framesize option */ +/*************************************************************************************************/ +/* miliseconds */ +#define FRAMESIZE 30 +/* number of samples per frame processed in the encoder, 480 */ +#define FRAMESAMPLES 480 /* ((FRAMESIZE*FS)/1000) */ +#define FRAMESAMPLES_HALF 240 +#define FRAMESAMPLES_QUARTER 120 +/*************************************************************************************************/ + + + +/* max number of samples per frame (= 60 ms frame) */ +#define MAX_FRAMESAMPLES 960 +#define MAX_SWBFRAMESAMPLES (MAX_FRAMESAMPLES * 2) +/* number of samples per 10ms frame */ +#define FRAMESAMPLES_10ms ((10*FS)/1000) +#define SWBFRAMESAMPLES_10ms (FRAMESAMPLES_10ms * 2) +/* number of samples in 30 ms frame */ +#define FRAMESAMPLES_30ms 480 +/* number of subframes */ +#define SUBFRAMES 6 +/* length of a subframe */ +#define UPDATE 80 +/* length of half a subframe (low/high band) */ +#define HALF_SUBFRAMELEN (UPDATE/2) +/* samples of look ahead (in a half-band, so actually half the samples of look ahead @ FS) */ +#define QLOOKAHEAD 24 /* 3 ms */ +/* order of AR model in spectral entropy coder */ +#define AR_ORDER 6 +/* order of LP model in spectral entropy coder */ +#define LP_ORDER 0 + +/* window length (masking analysis) */ +#define WINLEN 256 +/* order of low-band pole filter used to approximate masking curve */ +#define ORDERLO 12 +/* order of hi-band pole filter used to approximate masking curve */ +#define ORDERHI 6 + +#define UB_LPC_ORDER 4 +#define UB_LPC_VEC_PER_FRAME 2 +#define UB16_LPC_VEC_PER_FRAME 4 +#define UB_ACTIVE_SUBFRAMES 2 +#define UB_MAX_LPC_ORDER 6 +#define UB_INTERPOL_SEGMENTS 1 +#define UB16_INTERPOL_SEGMENTS 3 +#define LB_TOTAL_DELAY_SAMPLES 48 +enum ISACBandwidth {isac8kHz = 8, isac12kHz = 12, isac16kHz = 16}; +enum ISACBand{isacLowerBand = 0, isacUpperBand = 1}; +#define UB_LPC_GAIN_DIM SUBFRAMES +#define FB_STATE_SIZE_WORD32 6 + + +/* order for post_filter_bank */ +#define POSTQORDER 3 +/* order for pre-filterbank */ +#define QORDER 3 +/* another order */ +#define QORDER_ALL (POSTQORDER+QORDER-1) +/* for decimator */ +#define ALLPASSSECTIONS 2 + + +/* array size for byte stream in number of bytes. */ +#define STREAM_SIZE_MAX 600 /* The old maximum size still needed for the decoding */ +#define STREAM_SIZE_MAX_30 200 /* 200 bytes = 53.4 kbit/s @ 30 ms.framelength */ +#define STREAM_SIZE_MAX_60 400 /* 400 bytes = 53.4 kbit/s @ 60 ms.framelength */ + +/* storage size for bit counts */ +#define BIT_COUNTER_SIZE 30 +/* maximum order of any AR model or filter */ +#define MAX_AR_MODEL_ORDER 12//50 + + +/* For pitch analysis */ +#define PITCH_FRAME_LEN (FRAMESAMPLES_HALF) /* 30 ms */ +#define PITCH_MAX_LAG 140 /* 57 Hz */ +#define PITCH_MIN_LAG 20 /* 400 Hz */ +#define PITCH_MAX_GAIN 0.45 +#define PITCH_MAX_GAIN_06 0.27 /* PITCH_MAX_GAIN*0.6 */ +#define PITCH_MAX_GAIN_Q12 1843 +#define PITCH_LAG_SPAN2 (PITCH_MAX_LAG/2-PITCH_MIN_LAG/2+5) +#define PITCH_CORR_LEN2 60 /* 15 ms */ +#define PITCH_CORR_STEP2 (PITCH_FRAME_LEN/4) +#define PITCH_BW 11 /* half the band width of correlation surface */ +#define PITCH_SUBFRAMES 4 +#define PITCH_GRAN_PER_SUBFRAME 5 +#define PITCH_SUBFRAME_LEN (PITCH_FRAME_LEN/PITCH_SUBFRAMES) +#define PITCH_UPDATE (PITCH_SUBFRAME_LEN/PITCH_GRAN_PER_SUBFRAME) +/* maximum number of peaks to be examined in correlation surface */ +#define PITCH_MAX_NUM_PEAKS 10 +#define PITCH_PEAK_DECAY 0.85 +/* For weighting filter */ +#define PITCH_WLPCORDER 6 +#define PITCH_WLPCWINLEN PITCH_FRAME_LEN +#define PITCH_WLPCASYM 0.3 /* asymmetry parameter */ +#define PITCH_WLPCBUFLEN PITCH_WLPCWINLEN +/* For pitch filter */ +#define PITCH_BUFFSIZE (PITCH_MAX_LAG + 50) /* Extra 50 for fraction and LP filters */ +#define PITCH_INTBUFFSIZE (PITCH_FRAME_LEN+PITCH_BUFFSIZE) +/* Max rel. step for interpolation */ +#define PITCH_UPSTEP 1.5 +/* Max rel. step for interpolation */ +#define PITCH_DOWNSTEP 0.67 +#define PITCH_FRACS 8 +#define PITCH_FRACORDER 9 +#define PITCH_DAMPORDER 5 +#define PITCH_FILTDELAY 1.5f +/* stepsize for quantization of the pitch Gain */ +#define PITCH_GAIN_STEPSIZE 0.125 + + + +/* Order of high pass filter */ +#define HPORDER 2 + +/* some mathematical constants */ +#define LOG2EXP 1.44269504088896 /* log2(exp) */ +#define PI 3.14159265358979 + +/* Maximum number of iterations allowed to limit payload size */ +#define MAX_PAYLOAD_LIMIT_ITERATION 5 + +/* Redundant Coding */ +#define RCU_BOTTLENECK_BPS 16000 +#define RCU_TRANSCODING_SCALE 0.40f +#define RCU_TRANSCODING_SCALE_INVERSE 2.5f + +#define RCU_TRANSCODING_SCALE_UB 0.50f +#define RCU_TRANSCODING_SCALE_UB_INVERSE 2.0f + + +/* Define Error codes */ +/* 6000 General */ +#define ISAC_MEMORY_ALLOCATION_FAILED 6010 +#define ISAC_MODE_MISMATCH 6020 +#define ISAC_DISALLOWED_BOTTLENECK 6030 +#define ISAC_DISALLOWED_FRAME_LENGTH 6040 +#define ISAC_UNSUPPORTED_SAMPLING_FREQUENCY 6050 + +/* 6200 Bandwidth estimator */ +#define ISAC_RANGE_ERROR_BW_ESTIMATOR 6240 +/* 6400 Encoder */ +#define ISAC_ENCODER_NOT_INITIATED 6410 +#define ISAC_DISALLOWED_CODING_MODE 6420 +#define ISAC_DISALLOWED_FRAME_MODE_ENCODER 6430 +#define ISAC_DISALLOWED_BITSTREAM_LENGTH 6440 +#define ISAC_PAYLOAD_LARGER_THAN_LIMIT 6450 +#define ISAC_DISALLOWED_ENCODER_BANDWIDTH 6460 +/* 6600 Decoder */ +#define ISAC_DECODER_NOT_INITIATED 6610 +#define ISAC_EMPTY_PACKET 6620 +#define ISAC_DISALLOWED_FRAME_MODE_DECODER 6630 +#define ISAC_RANGE_ERROR_DECODE_FRAME_LENGTH 6640 +#define ISAC_RANGE_ERROR_DECODE_BANDWIDTH 6650 +#define ISAC_RANGE_ERROR_DECODE_PITCH_GAIN 6660 +#define ISAC_RANGE_ERROR_DECODE_PITCH_LAG 6670 +#define ISAC_RANGE_ERROR_DECODE_LPC 6680 +#define ISAC_RANGE_ERROR_DECODE_SPECTRUM 6690 +#define ISAC_LENGTH_MISMATCH 6730 +#define ISAC_RANGE_ERROR_DECODE_BANDWITH 6740 +#define ISAC_DISALLOWED_BANDWIDTH_MODE_DECODER 6750 +/* 6800 Call setup formats */ +#define ISAC_INCOMPATIBLE_FORMATS 6810 + +#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_SETTINGS_H_ */ diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/spectrum_ar_model_tables.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/spectrum_ar_model_tables.c.svn-base new file mode 100644 index 0000000000..92b9c4d626 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/spectrum_ar_model_tables.c.svn-base @@ -0,0 +1,138 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#include "spectrum_ar_model_tables.h" +#include "settings.h" + +/********************* AR Coefficient Tables ************************/ +/* cdf for quantized reflection coefficient 1 */ +const WebRtc_UWord16 WebRtcIsac_kQArRc1Cdf[12] = { + 0, 2, 4, 129, 7707, 57485, 65495, 65527, 65529, 65531, + 65533, 65535}; + +/* cdf for quantized reflection coefficient 2 */ +const WebRtc_UWord16 WebRtcIsac_kQArRc2Cdf[12] = { + 0, 2, 4, 7, 531, 25298, 64525, 65526, 65529, 65531, + 65533, 65535}; + +/* cdf for quantized reflection coefficient 3 */ +const WebRtc_UWord16 WebRtcIsac_kQArRc3Cdf[12] = { + 0, 2, 4, 6, 620, 22898, 64843, 65527, 65529, 65531, + 65533, 65535}; + +/* cdf for quantized reflection coefficient 4 */ +const WebRtc_UWord16 WebRtcIsac_kQArRc4Cdf[12] = { + 0, 2, 4, 6, 35, 10034, 60733, 65506, 65529, 65531, + 65533, 65535}; + +/* cdf for quantized reflection coefficient 5 */ +const WebRtc_UWord16 WebRtcIsac_kQArRc5Cdf[12] = { + 0, 2, 4, 6, 36, 7567, 56727, 65385, 65529, 65531, + 65533, 65535}; + +/* cdf for quantized reflection coefficient 6 */ +const WebRtc_UWord16 WebRtcIsac_kQArRc6Cdf[12] = { + 0, 2, 4, 6, 14, 6579, 57360, 65409, 65529, 65531, + 65533, 65535}; + +/* representation levels for quantized reflection coefficient 1 */ +const WebRtc_Word16 WebRtcIsac_kQArRc1Levels[11] = { + -32104, -29007, -23202, -15496, -9279, -2577, 5934, 17535, 24512, 29503, 32104 +}; + +/* representation levels for quantized reflection coefficient 2 */ +const WebRtc_Word16 WebRtcIsac_kQArRc2Levels[11] = { + -32104, -29503, -23494, -15261, -7309, -1399, 6158, 16381, 24512, 29503, 32104 +}; + +/* representation levels for quantized reflection coefficient 3 */ +const WebRtc_Word16 WebRtcIsac_kQArRc3Levels[11] = { +-32104, -29503, -23157, -15186, -7347, -1359, 5829, 17535, 24512, 29503, 32104 +}; + +/* representation levels for quantized reflection coefficient 4 */ +const WebRtc_Word16 WebRtcIsac_kQArRc4Levels[11] = { +-32104, -29503, -24512, -15362, -6665, -342, 6596, 14585, 24512, 29503, 32104 +}; + +/* representation levels for quantized reflection coefficient 5 */ +const WebRtc_Word16 WebRtcIsac_kQArRc5Levels[11] = { +-32104, -29503, -24512, -15005, -6564, -106, 7123, 14920, 24512, 29503, 32104 +}; + +/* representation levels for quantized reflection coefficient 6 */ +const WebRtc_Word16 WebRtcIsac_kQArRc6Levels[11] = { +-32104, -29503, -24512, -15096, -6656, -37, 7036, 14847, 24512, 29503, 32104 +}; + +/* quantization boundary levels for reflection coefficients */ +const WebRtc_Word16 WebRtcIsac_kQArBoundaryLevels[12] = { +-32768, -31441, -27566, -21458, -13612, -4663, 4663, 13612, 21458, 27566, 31441, 32767 +}; + +/* initial index for AR reflection coefficient quantizer and cdf table search */ +const WebRtc_UWord16 WebRtcIsac_kQArRcInitIndex[6] = { + 5, 5, 5, 5, 5, 5}; + +/* pointers to AR cdf tables */ +const WebRtc_UWord16 *WebRtcIsac_kQArRcCdfPtr[AR_ORDER] = { + WebRtcIsac_kQArRc1Cdf, WebRtcIsac_kQArRc2Cdf, WebRtcIsac_kQArRc3Cdf, + WebRtcIsac_kQArRc4Cdf, WebRtcIsac_kQArRc5Cdf, WebRtcIsac_kQArRc6Cdf +}; + +/* pointers to AR representation levels tables */ +const WebRtc_Word16 *WebRtcIsac_kQArRcLevelsPtr[AR_ORDER] = { + WebRtcIsac_kQArRc1Levels, WebRtcIsac_kQArRc2Levels, WebRtcIsac_kQArRc3Levels, + WebRtcIsac_kQArRc4Levels, WebRtcIsac_kQArRc5Levels, WebRtcIsac_kQArRc6Levels +}; + + +/******************** GAIN Coefficient Tables ***********************/ +/* cdf for Gain coefficient */ +const WebRtc_UWord16 WebRtcIsac_kQGainCdf[19] = { + 0, 2, 4, 6, 8, 10, 12, 14, 16, 1172, + 11119, 29411, 51699, 64445, 65527, 65529, 65531, 65533, 65535}; + +/* representation levels for quantized squared Gain coefficient */ +const WebRtc_Word32 WebRtcIsac_kQGain2Levels[18] = { +// 17, 28, 46, 76, 128, 215, 364, 709, 1268, 1960, 3405, 6078, 11286, 17827, 51918, 134498, 487432, 2048000}; + 128, 128, 128, 128, 128, 215, 364, 709, 1268, 1960, 3405, 6078, 11286, 17827, 51918, 134498, 487432, 2048000}; +/* quantization boundary levels for squared Gain coefficient */ +const WebRtc_Word32 WebRtcIsac_kQGain2BoundaryLevels[19] = { +0, 21, 35, 59, 99, 166, 280, 475, 815, 1414, 2495, 4505, 8397, 16405, 34431, 81359, 240497, 921600, 0x7FFFFFFF}; + +/* pointers to Gain cdf table */ +const WebRtc_UWord16 *WebRtcIsac_kQGainCdf_ptr[1] = {WebRtcIsac_kQGainCdf}; + +/* Gain initial index for gain quantizer and cdf table search */ +const WebRtc_UWord16 WebRtcIsac_kQGainInitIndex[1] = {11}; + +/************************* Cosine Tables ****************************/ +/* Cosine table */ +const WebRtc_Word16 WebRtcIsac_kCos[6][60] = { +{512, 512, 511, 510, 508, 507, 505, 502, 499, 496, 493, 489, 485, 480, 476, 470, 465, 459, 453, 447, +440, 433, 426, 418, 410, 402, 394, 385, 376, 367, 357, 348, 338, 327, 317, 306, 295, 284, 273, 262, +250, 238, 226, 214, 202, 190, 177, 165, 152, 139, 126, 113, 100, 87, 73, 60, 47, 33, 20, 7}, +{512, 510, 508, 503, 498, 491, 483, 473, 462, 450, 437, 422, 406, 389, 371, 352, 333, 312, 290, 268, +244, 220, 196, 171, 145, 120, 93, 67, 40, 13, -13, -40, -67, -93, -120, -145, -171, -196, -220, -244, +-268, -290, -312, -333, -352, -371, -389, -406, -422, -437, -450, -462, -473, -483, -491, -498, -503, -508, -510, -512}, +{512, 508, 502, 493, 480, 465, 447, 426, 402, 376, 348, 317, 284, 250, 214, 177, 139, 100, 60, 20, +-20, -60, -100, -139, -177, -214, -250, -284, -317, -348, -376, -402, -426, -447, -465, -480, -493, -502, -508, -512, +-512, -508, -502, -493, -480, -465, -447, -426, -402, -376, -348, -317, -284, -250, -214, -177, -139, -100, -60, -20}, +{511, 506, 495, 478, 456, 429, 398, 362, 322, 279, 232, 183, 133, 80, 27, -27, -80, -133, -183, -232, +-279, -322, -362, -398, -429, -456, -478, -495, -506, -511, -511, -506, -495, -478, -456, -429, -398, -362, -322, -279, +-232, -183, -133, -80, -27, 27, 80, 133, 183, 232, 279, 322, 362, 398, 429, 456, 478, 495, 506, 511}, +{511, 502, 485, 459, 426, 385, 338, 284, 226, 165, 100, 33, -33, -100, -165, -226, -284, -338, -385, -426, +-459, -485, -502, -511, -511, -502, -485, -459, -426, -385, -338, -284, -226, -165, -100, -33, 33, 100, 165, 226, +284, 338, 385, 426, 459, 485, 502, 511, 511, 502, 485, 459, 426, 385, 338, 284, 226, 165, 100, 33}, +{510, 498, 473, 437, 389, 333, 268, 196, 120, 40, -40, -120, -196, -268, -333, -389, -437, -473, -498, -510, +-510, -498, -473, -437, -389, -333, -268, -196, -120, -40, 40, 120, 196, 268, 333, 389, 437, 473, 498, 510, +510, 498, 473, 437, 389, 333, 268, 196, 120, 40, -40, -120, -196, -268, -333, -389, -437, -473, -498, -510} +}; diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/spectrum_ar_model_tables.h.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/spectrum_ar_model_tables.h.svn-base new file mode 100644 index 0000000000..159245bd98 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/spectrum_ar_model_tables.h.svn-base @@ -0,0 +1,76 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * spectrum_ar_model_tables.h + * + * This file contains definitions of tables with AR coefficients, + * Gain coefficients and cosine tables. + * + */ + +#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_SPECTRUM_AR_MODEL_TABLES_H_ +#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_SPECTRUM_AR_MODEL_TABLES_H_ + +#include "structs.h" + +/********************* AR Coefficient Tables ************************/ +/* cdf for quantized reflection coefficient 1 */ +extern const WebRtc_UWord16 WebRtcIsac_kQArRc1Cdf[12]; + +/* cdf for quantized reflection coefficient 2 */ +extern const WebRtc_UWord16 WebRtcIsac_kQArRc2Cdf[12]; + +/* cdf for quantized reflection coefficient 3 */ +extern const WebRtc_UWord16 WebRtcIsac_kQArRc3Cdf[12]; + +/* cdf for quantized reflection coefficient 4 */ +extern const WebRtc_UWord16 WebRtcIsac_kQArRc4Cdf[12]; + +/* cdf for quantized reflection coefficient 5 */ +extern const WebRtc_UWord16 WebRtcIsac_kQArRc5Cdf[12]; + +/* cdf for quantized reflection coefficient 6 */ +extern const WebRtc_UWord16 WebRtcIsac_kQArRc6Cdf[12]; + +/* quantization boundary levels for reflection coefficients */ +extern const WebRtc_Word16 WebRtcIsac_kQArBoundaryLevels[12]; + +/* initial indices for AR reflection coefficient quantizer and cdf table search */ +extern const WebRtc_UWord16 WebRtcIsac_kQArRcInitIndex[AR_ORDER]; + +/* pointers to AR cdf tables */ +extern const WebRtc_UWord16 *WebRtcIsac_kQArRcCdfPtr[AR_ORDER]; + +/* pointers to AR representation levels tables */ +extern const WebRtc_Word16 *WebRtcIsac_kQArRcLevelsPtr[AR_ORDER]; + + +/******************** GAIN Coefficient Tables ***********************/ +/* cdf for Gain coefficient */ +extern const WebRtc_UWord16 WebRtcIsac_kQGainCdf[19]; + +/* representation levels for quantized Gain coefficient */ +extern const WebRtc_Word32 WebRtcIsac_kQGain2Levels[18]; + +/* squared quantization boundary levels for Gain coefficient */ +extern const WebRtc_Word32 WebRtcIsac_kQGain2BoundaryLevels[19]; + +/* pointer to Gain cdf table */ +extern const WebRtc_UWord16 *WebRtcIsac_kQGainCdf_ptr[1]; + +/* Gain initial index for gain quantizer and cdf table search */ +extern const WebRtc_UWord16 WebRtcIsac_kQGainInitIndex[1]; + +/************************* Cosine Tables ****************************/ +/* Cosine table */ +extern const WebRtc_Word16 WebRtcIsac_kCos[6][60]; + +#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_SPECTRUM_AR_MODEL_TABLES_H_ */ diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/structs.h.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/structs.h.svn-base new file mode 100644 index 0000000000..7523ad6e4a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/structs.h.svn-base @@ -0,0 +1,478 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * structs.h + * + * This header file contains all the structs used in the ISAC codec + * + */ + +#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_STRUCTS_H_ +#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_STRUCTS_H_ + + +#include "typedefs.h" +#include "settings.h" +#include "isac.h" + +typedef struct Bitstreamstruct { + + WebRtc_UWord8 stream[STREAM_SIZE_MAX]; + WebRtc_UWord32 W_upper; + WebRtc_UWord32 streamval; + WebRtc_UWord32 stream_index; + +} Bitstr; + +typedef struct { + + double DataBufferLo[WINLEN]; + double DataBufferHi[WINLEN]; + + double CorrBufLo[ORDERLO+1]; + double CorrBufHi[ORDERHI+1]; + + float PreStateLoF[ORDERLO+1]; + float PreStateLoG[ORDERLO+1]; + float PreStateHiF[ORDERHI+1]; + float PreStateHiG[ORDERHI+1]; + float PostStateLoF[ORDERLO+1]; + float PostStateLoG[ORDERLO+1]; + float PostStateHiF[ORDERHI+1]; + float PostStateHiG[ORDERHI+1]; + + double OldEnergy; + +} MaskFiltstr; + + +typedef struct { + + //state vectors for each of the two analysis filters + double INSTAT1[2*(QORDER-1)]; + double INSTAT2[2*(QORDER-1)]; + double INSTATLA1[2*(QORDER-1)]; + double INSTATLA2[2*(QORDER-1)]; + double INLABUF1[QLOOKAHEAD]; + double INLABUF2[QLOOKAHEAD]; + + float INSTAT1_float[2*(QORDER-1)]; + float INSTAT2_float[2*(QORDER-1)]; + float INSTATLA1_float[2*(QORDER-1)]; + float INSTATLA2_float[2*(QORDER-1)]; + float INLABUF1_float[QLOOKAHEAD]; + float INLABUF2_float[QLOOKAHEAD]; + + /* High pass filter */ + double HPstates[HPORDER]; + float HPstates_float[HPORDER]; + +} PreFiltBankstr; + + +typedef struct { + + //state vectors for each of the two analysis filters + double STATE_0_LOWER[2*POSTQORDER]; + double STATE_0_UPPER[2*POSTQORDER]; + + /* High pass filter */ + double HPstates1[HPORDER]; + double HPstates2[HPORDER]; + + float STATE_0_LOWER_float[2*POSTQORDER]; + float STATE_0_UPPER_float[2*POSTQORDER]; + + float HPstates1_float[HPORDER]; + float HPstates2_float[HPORDER]; + +} PostFiltBankstr; + +typedef struct { + + //data buffer for pitch filter + double ubuf[PITCH_BUFFSIZE]; + + //low pass state vector + double ystate[PITCH_DAMPORDER]; + + //old lag and gain + double oldlagp[1]; + double oldgainp[1]; + +} PitchFiltstr; + +typedef struct { + + //data buffer + double buffer[PITCH_WLPCBUFLEN]; + + //state vectors + double istate[PITCH_WLPCORDER]; + double weostate[PITCH_WLPCORDER]; + double whostate[PITCH_WLPCORDER]; + + //LPC window -> should be a global array because constant + double window[PITCH_WLPCWINLEN]; + +} WeightFiltstr; + +typedef struct { + + //for inital estimator + double dec_buffer[PITCH_CORR_LEN2 + PITCH_CORR_STEP2 + + PITCH_MAX_LAG/2 - PITCH_FRAME_LEN/2+2]; + double decimator_state[2*ALLPASSSECTIONS+1]; + double hp_state[2]; + + double whitened_buf[QLOOKAHEAD]; + + double inbuf[QLOOKAHEAD]; + + PitchFiltstr PFstr_wght; + PitchFiltstr PFstr; + WeightFiltstr Wghtstr; + +} PitchAnalysisStruct; + + + +/* Have instance of struct together with other iSAC structs */ +typedef struct { + + /* Previous frame length (in ms) */ + WebRtc_Word32 prev_frame_length; + + /* Previous RTP timestamp from received + packet (in samples relative beginning) */ + WebRtc_Word32 prev_rec_rtp_number; + + /* Send timestamp for previous packet (in ms using timeGetTime()) */ + WebRtc_UWord32 prev_rec_send_ts; + + /* Arrival time for previous packet (in ms using timeGetTime()) */ + WebRtc_UWord32 prev_rec_arr_ts; + + /* rate of previous packet, derived from RTP timestamps (in bits/s) */ + float prev_rec_rtp_rate; + + /* Time sinse the last update of the BN estimate (in ms) */ + WebRtc_UWord32 last_update_ts; + + /* Time sinse the last reduction (in ms) */ + WebRtc_UWord32 last_reduction_ts; + + /* How many times the estimate was update in the beginning */ + WebRtc_Word32 count_tot_updates_rec; + + /* The estimated bottle neck rate from there to here (in bits/s) */ + WebRtc_Word32 rec_bw; + float rec_bw_inv; + float rec_bw_avg; + float rec_bw_avg_Q; + + /* The estimated mean absolute jitter value, + as seen on this side (in ms) */ + float rec_jitter; + float rec_jitter_short_term; + float rec_jitter_short_term_abs; + float rec_max_delay; + float rec_max_delay_avg_Q; + + /* (assumed) bitrate for headers (bps) */ + float rec_header_rate; + + /* The estimated bottle neck rate from here to there (in bits/s) */ + float send_bw_avg; + + /* The estimated mean absolute jitter value, as seen on + the other siee (in ms) */ + float send_max_delay_avg; + + // number of packets received since last update + int num_pkts_rec; + + int num_consec_rec_pkts_over_30k; + + // flag for marking that a high speed network has been + // detected downstream + int hsn_detect_rec; + + int num_consec_snt_pkts_over_30k; + + // flag for marking that a high speed network has + // been detected upstream + int hsn_detect_snd; + + WebRtc_UWord32 start_wait_period; + + int in_wait_period; + + int change_to_WB; + + WebRtc_UWord32 senderTimestamp; + WebRtc_UWord32 receiverTimestamp; + //enum IsacSamplingRate incomingStreamSampFreq; + WebRtc_UWord16 numConsecLatePkts; + float consecLatency; + WebRtc_Word16 inWaitLatePkts; +} BwEstimatorstr; + + +typedef struct { + + /* boolean, flags if previous packet exceeded B.N. */ + int PrevExceed; + /* ms */ + int ExceedAgo; + /* packets left to send in current burst */ + int BurstCounter; + /* packets */ + int InitCounter; + /* ms remaining in buffer when next packet will be sent */ + double StillBuffered; + +} RateModel; + + +typedef struct { + + unsigned int SpaceAlloced; + unsigned int MaxPermAlloced; + double Tmp0[MAXFFTSIZE]; + double Tmp1[MAXFFTSIZE]; + double Tmp2[MAXFFTSIZE]; + double Tmp3[MAXFFTSIZE]; + int Perm[MAXFFTSIZE]; + int factor [NFACTOR]; + +} FFTstr; + + +/* The following strutc is used to store data from encoding, to make it + fast and easy to construct a new bitstream with a different Bandwidth + estimate. All values (except framelength and minBytes) is double size to + handle 60 ms of data. +*/ +typedef struct { + + /* Used to keep track of if it is first or second part of 60 msec packet */ + int startIdx; + + /* Frame length in samples */ + WebRtc_Word16 framelength; + + /* Pitch Gain */ + int pitchGain_index[2]; + + /* Pitch Lag */ + double meanGain[2]; + int pitchIndex[PITCH_SUBFRAMES*2]; + + /* LPC */ + int LPCmodel[2]; + int LPCindex_s[108*2]; /* KLT_ORDER_SHAPE = 108 */ + int LPCindex_g[12*2]; /* KLT_ORDER_GAIN = 12 */ + double LPCcoeffs_lo[(ORDERLO+1)*SUBFRAMES*2]; + double LPCcoeffs_hi[(ORDERHI+1)*SUBFRAMES*2]; + + /* Encode Spec */ + WebRtc_Word16 fre[FRAMESAMPLES]; + WebRtc_Word16 fim[FRAMESAMPLES]; + WebRtc_Word16 AvgPitchGain[2]; + + /* Used in adaptive mode only */ + int minBytes; + +} ISAC_SaveEncData_t; + + +typedef struct { + + int indexLPCShape[UB_LPC_ORDER * UB16_LPC_VEC_PER_FRAME]; + double lpcGain[SUBFRAMES<<1]; + int lpcGainIndex[SUBFRAMES<<1]; + + Bitstr bitStreamObj; + + WebRtc_Word16 realFFT[FRAMESAMPLES_HALF]; + WebRtc_Word16 imagFFT[FRAMESAMPLES_HALF]; +} ISACUBSaveEncDataStruct; + + + +typedef struct { + + Bitstr bitstr_obj; + MaskFiltstr maskfiltstr_obj; + PreFiltBankstr prefiltbankstr_obj; + PitchFiltstr pitchfiltstr_obj; + PitchAnalysisStruct pitchanalysisstr_obj; + FFTstr fftstr_obj; + ISAC_SaveEncData_t SaveEnc_obj; + + int buffer_index; + WebRtc_Word16 current_framesamples; + + float data_buffer_float[FRAMESAMPLES_30ms]; + + int frame_nb; + double bottleneck; + WebRtc_Word16 new_framelength; + double s2nr; + + /* Maximum allowed number of bits for a 30 msec packet */ + WebRtc_Word16 payloadLimitBytes30; + /* Maximum allowed number of bits for a 30 msec packet */ + WebRtc_Word16 payloadLimitBytes60; + /* Maximum allowed number of bits for both 30 and 60 msec packet */ + WebRtc_Word16 maxPayloadBytes; + /* Maximum allowed rate in bytes per 30 msec packet */ + WebRtc_Word16 maxRateInBytes; + + /*--- + If set to 1 iSAC will not addapt the frame-size, if used in + channel-adaptive mode. The initial value will be used for all rates. + ---*/ + WebRtc_Word16 enforceFrameSize; + + /*----- + This records the BWE index the encoder injected into the bit-stream. + It will be used in RCU. The same BWE index of main paylaod will be in + the redundant payload. We can not retrive it from BWE because it is + a recursive procedure (WebRtcIsac_GetDownlinkBwJitIndexImpl) and has to be + called only once per each encode. + -----*/ + WebRtc_Word16 lastBWIdx; +} ISACLBEncStruct; + +typedef struct { + + Bitstr bitstr_obj; + MaskFiltstr maskfiltstr_obj; + PreFiltBankstr prefiltbankstr_obj; + FFTstr fftstr_obj; + ISACUBSaveEncDataStruct SaveEnc_obj; + + int buffer_index; + float data_buffer_float[MAX_FRAMESAMPLES + + LB_TOTAL_DELAY_SAMPLES]; + double bottleneck; + /* Maximum allowed number of bits for a 30 msec packet */ + //WebRtc_Word16 payloadLimitBytes30; + /* Maximum allowed number of bits for both 30 and 60 msec packet */ + //WebRtc_Word16 maxPayloadBytes; + WebRtc_Word16 maxPayloadSizeBytes; + + double lastLPCVec[UB_LPC_ORDER]; + WebRtc_Word16 numBytesUsed; + WebRtc_Word16 lastJitterInfo; +} ISACUBEncStruct; + + + +typedef struct { + + Bitstr bitstr_obj; + MaskFiltstr maskfiltstr_obj; + PostFiltBankstr postfiltbankstr_obj; + PitchFiltstr pitchfiltstr_obj; + FFTstr fftstr_obj; + +} ISACLBDecStruct; + +typedef struct { + + Bitstr bitstr_obj; + MaskFiltstr maskfiltstr_obj; + PostFiltBankstr postfiltbankstr_obj; + FFTstr fftstr_obj; + +} ISACUBDecStruct; + + + +typedef struct { + + ISACLBEncStruct ISACencLB_obj; + ISACLBDecStruct ISACdecLB_obj; +} ISACLBStruct; + + +typedef struct { + + ISACUBEncStruct ISACencUB_obj; + ISACUBDecStruct ISACdecUB_obj; +} ISACUBStruct; + +/* + This struct is used to take a snapshot of the entropy coder and LPC gains + right before encoding LPC gains. This allows us to go back to that state + if we like to limit the payload size. +*/ +typedef struct { + /* 6 lower-band & 6 upper-band */ + double loFiltGain[SUBFRAMES]; + double hiFiltGain[SUBFRAMES]; + /* Upper boundary of interval W */ + WebRtc_UWord32 W_upper; + WebRtc_UWord32 streamval; + /* Index to the current position in bytestream */ + WebRtc_UWord32 stream_index; + WebRtc_UWord8 stream[3]; +} transcode_obj; + + +typedef struct { + // lower-band codec instance + ISACLBStruct instLB; + // upper-band codec instance + ISACUBStruct instUB; + + // Bandwidth Estimator and model for the rate. + BwEstimatorstr bwestimator_obj; + RateModel rate_data_obj; + double MaxDelay; + + /* 0 = adaptive; 1 = instantaneous */ + WebRtc_Word16 codingMode; + + // overall bottleneck of the codec + WebRtc_Word32 bottleneck; + + // QMF Filter state + WebRtc_Word32 analysisFBState1[FB_STATE_SIZE_WORD32]; + WebRtc_Word32 analysisFBState2[FB_STATE_SIZE_WORD32]; + WebRtc_Word32 synthesisFBState1[FB_STATE_SIZE_WORD32]; + WebRtc_Word32 synthesisFBState2[FB_STATE_SIZE_WORD32]; + + // Error Code + WebRtc_Word16 errorCode; + + // bandwidth of the encoded audio 8, 12 or 16 kHz + enum ISACBandwidth bandwidthKHz; + // Sampling rate of audio, encoder and decode, 8 or 16 kHz + enum IsacSamplingRate encoderSamplingRateKHz; + enum IsacSamplingRate decoderSamplingRateKHz; + // Flag to keep track of initializations, lower & upper-band + // encoder and decoder. + WebRtc_Word16 initFlag; + + // Flag to to indicate signal bandwidth switch + WebRtc_Word16 resetFlag_8kHz; + + // Maximum allowed rate, measured in Bytes per 30 ms. + WebRtc_Word16 maxRateBytesPer30Ms; + // Maximum allowed payload-size, measured in Bytes. + WebRtc_Word16 maxPayloadSizeBytes; +} ISACMainStruct; + +#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_STRUCTS_H_ */ diff --git a/src/mod/codecs/mod_iSAC/.svn/text-base/transform.c.svn-base b/src/mod/codecs/mod_iSAC/.svn/text-base/transform.c.svn-base new file mode 100644 index 0000000000..97b801ac49 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/.svn/text-base/transform.c.svn-base @@ -0,0 +1,131 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#include "settings.h" +#include "fft.h" +#include "codec.h" +#include "os_specific_inline.h" +#include + +static double costab1[FRAMESAMPLES_HALF]; +static double sintab1[FRAMESAMPLES_HALF]; +static double costab2[FRAMESAMPLES_QUARTER]; +static double sintab2[FRAMESAMPLES_QUARTER]; + +void WebRtcIsac_InitTransform() +{ + int k; + double fact, phase; + + fact = PI / (FRAMESAMPLES_HALF); + phase = 0.0; + for (k = 0; k < FRAMESAMPLES_HALF; k++) { + costab1[k] = cos(phase); + sintab1[k] = sin(phase); + phase += fact; + } + + fact = PI * ((double) (FRAMESAMPLES_HALF - 1)) / ((double) FRAMESAMPLES_HALF); + phase = 0.5 * fact; + for (k = 0; k < FRAMESAMPLES_QUARTER; k++) { + costab2[k] = cos(phase); + sintab2[k] = sin(phase); + phase += fact; + } +} + + +void WebRtcIsac_Time2Spec(double *inre1, + double *inre2, + WebRtc_Word16 *outreQ7, + WebRtc_Word16 *outimQ7, + FFTstr *fftstr_obj) +{ + + int k; + int dims[1]; + double tmp1r, tmp1i, xr, xi, yr, yi, fact; + double tmpre[FRAMESAMPLES_HALF], tmpim[FRAMESAMPLES_HALF]; + + + dims[0] = FRAMESAMPLES_HALF; + + + /* Multiply with complex exponentials and combine into one complex vector */ + fact = 0.5 / sqrt(FRAMESAMPLES_HALF); + for (k = 0; k < FRAMESAMPLES_HALF; k++) { + tmp1r = costab1[k]; + tmp1i = sintab1[k]; + tmpre[k] = (inre1[k] * tmp1r + inre2[k] * tmp1i) * fact; + tmpim[k] = (inre2[k] * tmp1r - inre1[k] * tmp1i) * fact; + } + + + /* Get DFT */ + WebRtcIsac_Fftns(1, dims, tmpre, tmpim, -1, 1.0, fftstr_obj); + + /* Use symmetry to separate into two complex vectors and center frames in time around zero */ + for (k = 0; k < FRAMESAMPLES_QUARTER; k++) { + xr = tmpre[k] + tmpre[FRAMESAMPLES_HALF - 1 - k]; + yi = -tmpre[k] + tmpre[FRAMESAMPLES_HALF - 1 - k]; + xi = tmpim[k] - tmpim[FRAMESAMPLES_HALF - 1 - k]; + yr = tmpim[k] + tmpim[FRAMESAMPLES_HALF - 1 - k]; + + tmp1r = costab2[k]; + tmp1i = sintab2[k]; + outreQ7[k] = (WebRtc_Word16)WebRtcIsac_lrint((xr * tmp1r - xi * tmp1i) * 128.0); + outimQ7[k] = (WebRtc_Word16)WebRtcIsac_lrint((xr * tmp1i + xi * tmp1r) * 128.0); + outreQ7[FRAMESAMPLES_HALF - 1 - k] = (WebRtc_Word16)WebRtcIsac_lrint((-yr * tmp1i - yi * tmp1r) * 128.0); + outimQ7[FRAMESAMPLES_HALF - 1 - k] = (WebRtc_Word16)WebRtcIsac_lrint((-yr * tmp1r + yi * tmp1i) * 128.0); + } +} + + +void WebRtcIsac_Spec2time(double *inre, double *inim, double *outre1, double *outre2, FFTstr *fftstr_obj) +{ + + int k; + double tmp1r, tmp1i, xr, xi, yr, yi, fact; + + int dims; + + dims = FRAMESAMPLES_HALF; + + for (k = 0; k < FRAMESAMPLES_QUARTER; k++) { + /* Move zero in time to beginning of frames */ + tmp1r = costab2[k]; + tmp1i = sintab2[k]; + xr = inre[k] * tmp1r + inim[k] * tmp1i; + xi = inim[k] * tmp1r - inre[k] * tmp1i; + yr = -inim[FRAMESAMPLES_HALF - 1 - k] * tmp1r - inre[FRAMESAMPLES_HALF - 1 - k] * tmp1i; + yi = -inre[FRAMESAMPLES_HALF - 1 - k] * tmp1r + inim[FRAMESAMPLES_HALF - 1 - k] * tmp1i; + + /* Combine into one vector, z = x + j * y */ + outre1[k] = xr - yi; + outre1[FRAMESAMPLES_HALF - 1 - k] = xr + yi; + outre2[k] = xi + yr; + outre2[FRAMESAMPLES_HALF - 1 - k] = -xi + yr; + } + + + /* Get IDFT */ + WebRtcIsac_Fftns(1, &dims, outre1, outre2, 1, FRAMESAMPLES_HALF, fftstr_obj); + + + /* Demodulate and separate */ + fact = sqrt(FRAMESAMPLES_HALF); + for (k = 0; k < FRAMESAMPLES_HALF; k++) { + tmp1r = costab1[k]; + tmp1i = sintab1[k]; + xr = (outre1[k] * tmp1r - outre2[k] * tmp1i) * fact; + outre2[k] = (outre2[k] * tmp1r + outre1[k] * tmp1i) * fact; + outre1[k] = xr; + } +} diff --git a/src/mod/codecs/mod_iSAC/LICENSE b/src/mod/codecs/mod_iSAC/LICENSE new file mode 100644 index 0000000000..4c41b7b251 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/LICENSE @@ -0,0 +1,29 @@ +Copyright (c) 2011, The WebRTC project authors. All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are +met: + + * Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + + * Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in + the documentation and/or other materials provided with the + distribution. + + * Neither the name of Google nor the names of its contributors may + be used to endorse or promote products derived from this software + without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. diff --git a/src/mod/codecs/mod_iSAC/Makefile b/src/mod/codecs/mod_iSAC/Makefile new file mode 100644 index 0000000000..d89cf0c613 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/Makefile @@ -0,0 +1,71 @@ +BASE=../../../.. + +LOCAL_SOURCES=arith_routines.c\ +arith_routines_hist.c\ +arith_routines_logist.c\ +auto_correlation.c\ +auto_corr_to_refl_coef.c\ +bandwidth_estimator.c\ +complex_bit_reverse.c\ +complex_fft.c\ +copy_set_operations.c\ +crc.c\ +cross_correlation.c\ +decode_bwe.c\ +decode.c\ +division_operations.c\ +dot_product_with_scale.c\ +downsample_fast.c\ +encode.c\ +encode_lpc_swb.c\ +energy.c\ +entropy_coding.c\ +fft.c\ +filter_ar.c\ +filter_ar_fast_q12.c\ +filterbanks.c\ +filterbank_tables.c\ +filter_functions.c\ +filter_ma_fast_q12.c\ +get_hanning_window.c\ +get_scaling_square.c\ +ilbc_specific_functions.c\ +intialize.c\ +isac.c\ +lattice.c\ +levinson_durbin.c\ +lpc_analysis.c\ +lpc_gain_swb_tables.c\ +lpc_shape_swb12_tables.c\ +lpc_shape_swb16_tables.c\ +lpc_tables.c\ +lpc_to_refl_coef.c\ +min_max_operations.c\ +min_max_operations_neon.c\ +pitch_estimator.c\ +pitch_filter.c\ +pitch_gain_tables.c\ +pitch_lag_tables.c\ +randomization_functions.c\ +refl_coef_to_lpc.c\ +resample_48khz.c\ +resample_by_2.c\ +resample_by_2_internal.c\ +resample.c\ +resample_fractional.c\ +spectrum_ar_model_tables.c\ +splitting_filter.c\ +spl_sqrt.c\ +spl_sqrt_floor.c\ +spl_version.c\ +sqrt_of_one_minus_x_squared.c\ +transform.c\ +vector_scaling_operations.c\ +webrtc_fft_t_1024_8.c\ +webrtc_fft_t_rad.c "" + +LOCAL_OBJS=$(shell echo $(LOCAL_SOURCES) | sed "s/.c /.o /g") +LOCAL_CFLAGS=-w -I. + +include $(BASE)/build/modmake.rules + diff --git a/src/mod/codecs/mod_iSAC/PATENTS b/src/mod/codecs/mod_iSAC/PATENTS new file mode 100644 index 0000000000..190607ac26 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/PATENTS @@ -0,0 +1,24 @@ +Additional IP Rights Grant (Patents) + +"This implementation" means the copyrightable works distributed by +Google as part of the WebRTC code package. + +Google hereby grants to you a perpetual, worldwide, non-exclusive, +no-charge, irrevocable (except as stated in this section) patent +license to make, have made, use, offer to sell, sell, import, +transfer, and otherwise run, modify and propagate the contents of this +implementation of the WebRTC code package, where such license applies +only to those patent claims, both currently owned by Google and +acquired in the future, licensable by Google that are necessarily +infringed by this implementation of the WebRTC code package. This +grant does not include claims that would be infringed only as a +consequence of further modification of this implementation. If you or +your agent or exclusive licensee institute or order or agree to the +institution of patent litigation against any entity (including a +cross-claim or counterclaim in a lawsuit) alleging that this +implementation of the WebRTC code package or any code incorporated +within this implementation of the WebRTC code package constitutes +direct or contributory patent infringement, or inducement of patent +infringement, then any patent rights granted to you under this License +for this implementation of the WebRTC code package shall terminate as +of the date such litigation is filed. diff --git a/src/mod/codecs/mod_iSAC/arith_routines.c b/src/mod/codecs/mod_iSAC/arith_routines.c new file mode 100644 index 0000000000..31c441a7af --- /dev/null +++ b/src/mod/codecs/mod_iSAC/arith_routines.c @@ -0,0 +1,60 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#include "arith_routines.h" +#include "settings.h" + + +/* + * terminate and return byte stream; + * returns the number of bytes in the stream + */ +int WebRtcIsac_EncTerminate(Bitstr *streamdata) /* in-/output struct containing bitstream */ +{ + WebRtc_UWord8 *stream_ptr; + + + /* point to the right place in the stream buffer */ + stream_ptr = streamdata->stream + streamdata->stream_index; + + /* find minimum length (determined by current interval width) */ + if ( streamdata->W_upper > 0x01FFFFFF ) + { + streamdata->streamval += 0x01000000; + /* add carry to buffer */ + if (streamdata->streamval < 0x01000000) + { + /* propagate carry */ + while ( !(++(*--stream_ptr)) ); + /* put pointer back to the old value */ + stream_ptr = streamdata->stream + streamdata->stream_index; + } + /* write remaining data to bitstream */ + *stream_ptr++ = (WebRtc_UWord8) (streamdata->streamval >> 24); + } + else + { + streamdata->streamval += 0x00010000; + /* add carry to buffer */ + if (streamdata->streamval < 0x00010000) + { + /* propagate carry */ + while ( !(++(*--stream_ptr)) ); + /* put pointer back to the old value */ + stream_ptr = streamdata->stream + streamdata->stream_index; + } + /* write remaining data to bitstream */ + *stream_ptr++ = (WebRtc_UWord8) (streamdata->streamval >> 24); + *stream_ptr++ = (WebRtc_UWord8) ((streamdata->streamval >> 16) & 0x00FF); + } + + /* calculate stream length */ + return (int)(stream_ptr - streamdata->stream); +} diff --git a/src/mod/codecs/mod_iSAC/arith_routines.h b/src/mod/codecs/mod_iSAC/arith_routines.h new file mode 100644 index 0000000000..8e5f496f98 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/arith_routines.h @@ -0,0 +1,63 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * arith_routines.h + * + * Functions for arithmetic coding. + * + */ + +#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_ARITH_ROUTINES_H_ +#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_ARITH_ROUTINES_H_ + +#include "structs.h" + + +int WebRtcIsac_EncLogisticMulti2( + Bitstr *streamdata, /* in-/output struct containing bitstream */ + WebRtc_Word16 *dataQ7, /* input: data vector */ + const WebRtc_UWord16 *env, /* input: side info vector defining the width of the pdf */ + const int N, /* input: data vector length */ + const WebRtc_Word16 isSWB12kHz); /* if the codec is working in 12kHz bandwidth */ + +/* returns the number of bytes in the stream */ +int WebRtcIsac_EncTerminate(Bitstr *streamdata); /* in-/output struct containing bitstream */ + +/* returns the number of bytes in the stream so far */ +int WebRtcIsac_DecLogisticMulti2( + WebRtc_Word16 *data, /* output: data vector */ + Bitstr *streamdata, /* in-/output struct containing bitstream */ + const WebRtc_UWord16 *env, /* input: side info vector defining the width of the pdf */ + const WebRtc_Word16 *dither, /* input: dither vector */ + const int N, /* input: data vector length */ + const WebRtc_Word16 isSWB12kHz); /* if the codec is working in 12kHz bandwidth */ + +void WebRtcIsac_EncHistMulti( + Bitstr *streamdata, /* in-/output struct containing bitstream */ + const int *data, /* input: data vector */ + const WebRtc_UWord16 **cdf, /* input: array of cdf arrays */ + const int N); /* input: data vector length */ + +int WebRtcIsac_DecHistBisectMulti( + int *data, /* output: data vector */ + Bitstr *streamdata, /* in-/output struct containing bitstream */ + const WebRtc_UWord16 **cdf, /* input: array of cdf arrays */ + const WebRtc_UWord16 *cdf_size, /* input: array of cdf table sizes+1 (power of two: 2^k) */ + const int N); /* input: data vector length */ + +int WebRtcIsac_DecHistOneStepMulti( + int *data, /* output: data vector */ + Bitstr *streamdata, /* in-/output struct containing bitstream */ + const WebRtc_UWord16 **cdf, /* input: array of cdf arrays */ + const WebRtc_UWord16 *init_index,/* input: vector of initial cdf table search entries */ + const int N); /* input: data vector length */ + +#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_ARITH_ROUTINES_H_ */ diff --git a/src/mod/codecs/mod_iSAC/arith_routines_hist.c b/src/mod/codecs/mod_iSAC/arith_routines_hist.c new file mode 100644 index 0000000000..f4a13d6078 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/arith_routines_hist.c @@ -0,0 +1,291 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#include "settings.h" +#include "arith_routines.h" + + +/* + * code symbols into arithmetic bytestream + */ +void WebRtcIsac_EncHistMulti(Bitstr *streamdata, /* in-/output struct containing bitstream */ + const int *data, /* input: data vector */ + const WebRtc_UWord16 **cdf, /* input: array of cdf arrays */ + const int N) /* input: data vector length */ +{ + WebRtc_UWord32 W_lower, W_upper; + WebRtc_UWord32 W_upper_LSB, W_upper_MSB; + WebRtc_UWord8 *stream_ptr; + WebRtc_UWord8 *stream_ptr_carry; + WebRtc_UWord32 cdf_lo, cdf_hi; + int k; + + + /* point to beginning of stream buffer */ + stream_ptr = streamdata->stream + streamdata->stream_index; + W_upper = streamdata->W_upper; + + for (k=N; k>0; k--) + { + /* fetch cdf_lower and cdf_upper from cdf tables */ + cdf_lo = (WebRtc_UWord32) *(*cdf + *data); + cdf_hi = (WebRtc_UWord32) *(*cdf++ + *data++ + 1); + + /* update interval */ + W_upper_LSB = W_upper & 0x0000FFFF; + W_upper_MSB = W_upper >> 16; + W_lower = W_upper_MSB * cdf_lo; + W_lower += (W_upper_LSB * cdf_lo) >> 16; + W_upper = W_upper_MSB * cdf_hi; + W_upper += (W_upper_LSB * cdf_hi) >> 16; + + /* shift interval such that it begins at zero */ + W_upper -= ++W_lower; + + /* add integer to bitstream */ + streamdata->streamval += W_lower; + + /* handle carry */ + if (streamdata->streamval < W_lower) + { + /* propagate carry */ + stream_ptr_carry = stream_ptr; + while (!(++(*--stream_ptr_carry))); + } + + /* renormalize interval, store most significant byte of streamval and update streamval */ + while ( !(W_upper & 0xFF000000) ) /* W_upper < 2^24 */ + { + W_upper <<= 8; + *stream_ptr++ = (WebRtc_UWord8) (streamdata->streamval >> 24); + streamdata->streamval <<= 8; + } + } + + /* calculate new stream_index */ + streamdata->stream_index = (int)(stream_ptr - streamdata->stream); + streamdata->W_upper = W_upper; + + return; +} + + + +/* + * function to decode more symbols from the arithmetic bytestream, using method of bisection + * cdf tables should be of size 2^k-1 (which corresponds to an alphabet size of 2^k-2) + */ +int WebRtcIsac_DecHistBisectMulti(int *data, /* output: data vector */ + Bitstr *streamdata, /* in-/output struct containing bitstream */ + const WebRtc_UWord16 **cdf, /* input: array of cdf arrays */ + const WebRtc_UWord16 *cdf_size, /* input: array of cdf table sizes+1 (power of two: 2^k) */ + const int N) /* input: data vector length */ +{ + WebRtc_UWord32 W_lower, W_upper; + WebRtc_UWord32 W_tmp; + WebRtc_UWord32 W_upper_LSB, W_upper_MSB; + WebRtc_UWord32 streamval; + const WebRtc_UWord8 *stream_ptr; + const WebRtc_UWord16 *cdf_ptr; + int size_tmp; + int k; + + W_lower = 0; //to remove warning -DH + stream_ptr = streamdata->stream + streamdata->stream_index; + W_upper = streamdata->W_upper; + if (W_upper == 0) + /* Should not be possible in normal operation */ + return -2; + + if (streamdata->stream_index == 0) /* first time decoder is called for this stream */ + { + /* read first word from bytestream */ + streamval = *stream_ptr << 24; + streamval |= *++stream_ptr << 16; + streamval |= *++stream_ptr << 8; + streamval |= *++stream_ptr; + } else { + streamval = streamdata->streamval; + } + + for (k=N; k>0; k--) + { + /* find the integer *data for which streamval lies in [W_lower+1, W_upper] */ + W_upper_LSB = W_upper & 0x0000FFFF; + W_upper_MSB = W_upper >> 16; + + /* start halfway the cdf range */ + size_tmp = *cdf_size++ >> 1; + cdf_ptr = *cdf + (size_tmp - 1); + + /* method of bisection */ + for ( ;; ) + { + W_tmp = W_upper_MSB * *cdf_ptr; + W_tmp += (W_upper_LSB * *cdf_ptr) >> 16; + size_tmp >>= 1; + if (size_tmp == 0) break; + if (streamval > W_tmp) + { + W_lower = W_tmp; + cdf_ptr += size_tmp; + } else { + W_upper = W_tmp; + cdf_ptr -= size_tmp; + } + } + if (streamval > W_tmp) + { + W_lower = W_tmp; + *data++ = (int)(cdf_ptr - *cdf++); + } else { + W_upper = W_tmp; + *data++ = (int)(cdf_ptr - *cdf++ - 1); + } + + /* shift interval to start at zero */ + W_upper -= ++W_lower; + + /* add integer to bitstream */ + streamval -= W_lower; + + /* renormalize interval and update streamval */ + while ( !(W_upper & 0xFF000000) ) /* W_upper < 2^24 */ + { + /* read next byte from stream */ + streamval = (streamval << 8) | *++stream_ptr; + W_upper <<= 8; + } + + if (W_upper == 0) + /* Should not be possible in normal operation */ + return -2; + + + } + + streamdata->stream_index = (int)(stream_ptr - streamdata->stream); + streamdata->W_upper = W_upper; + streamdata->streamval = streamval; + + + /* find number of bytes in original stream (determined by current interval width) */ + if ( W_upper > 0x01FFFFFF ) + return streamdata->stream_index - 2; + else + return streamdata->stream_index - 1; +} + + + +/* + * function to decode more symbols from the arithmetic bytestream, taking single step up or + * down at a time + * cdf tables can be of arbitrary size, but large tables may take a lot of iterations + */ +int WebRtcIsac_DecHistOneStepMulti(int *data, /* output: data vector */ + Bitstr *streamdata, /* in-/output struct containing bitstream */ + const WebRtc_UWord16 **cdf, /* input: array of cdf arrays */ + const WebRtc_UWord16 *init_index, /* input: vector of initial cdf table search entries */ + const int N) /* input: data vector length */ +{ + WebRtc_UWord32 W_lower, W_upper; + WebRtc_UWord32 W_tmp; + WebRtc_UWord32 W_upper_LSB, W_upper_MSB; + WebRtc_UWord32 streamval; + const WebRtc_UWord8 *stream_ptr; + const WebRtc_UWord16 *cdf_ptr; + int k; + + + stream_ptr = streamdata->stream + streamdata->stream_index; + W_upper = streamdata->W_upper; + if (W_upper == 0) + /* Should not be possible in normal operation */ + return -2; + + if (streamdata->stream_index == 0) /* first time decoder is called for this stream */ + { + /* read first word from bytestream */ + streamval = *stream_ptr << 24; + streamval |= *++stream_ptr << 16; + streamval |= *++stream_ptr << 8; + streamval |= *++stream_ptr; + } else { + streamval = streamdata->streamval; + } + + + for (k=N; k>0; k--) + { + /* find the integer *data for which streamval lies in [W_lower+1, W_upper] */ + W_upper_LSB = W_upper & 0x0000FFFF; + W_upper_MSB = W_upper >> 16; + + /* start at the specified table entry */ + cdf_ptr = *cdf + (*init_index++); + W_tmp = W_upper_MSB * *cdf_ptr; + W_tmp += (W_upper_LSB * *cdf_ptr) >> 16; + if (streamval > W_tmp) + { + for ( ;; ) + { + W_lower = W_tmp; + if (cdf_ptr[0]==65535) + /* range check */ + return -3; + W_tmp = W_upper_MSB * *++cdf_ptr; + W_tmp += (W_upper_LSB * *cdf_ptr) >> 16; + if (streamval <= W_tmp) break; + } + W_upper = W_tmp; + *data++ = (int)(cdf_ptr - *cdf++ - 1); + } else { + for ( ;; ) + { + W_upper = W_tmp; + --cdf_ptr; + if (cdf_ptr<*cdf) { + /* range check */ + return -3; + } + W_tmp = W_upper_MSB * *cdf_ptr; + W_tmp += (W_upper_LSB * *cdf_ptr) >> 16; + if (streamval > W_tmp) break; + } + W_lower = W_tmp; + *data++ = (int)(cdf_ptr - *cdf++); + } + + /* shift interval to start at zero */ + W_upper -= ++W_lower; + /* add integer to bitstream */ + streamval -= W_lower; + + /* renormalize interval and update streamval */ + while ( !(W_upper & 0xFF000000) ) /* W_upper < 2^24 */ + { + /* read next byte from stream */ + streamval = (streamval << 8) | *++stream_ptr; + W_upper <<= 8; + } + } + + streamdata->stream_index = (int)(stream_ptr - streamdata->stream); + streamdata->W_upper = W_upper; + streamdata->streamval = streamval; + + + /* find number of bytes in original stream (determined by current interval width) */ + if ( W_upper > 0x01FFFFFF ) + return streamdata->stream_index - 2; + else + return streamdata->stream_index - 1; +} diff --git a/src/mod/codecs/mod_iSAC/arith_routines_logist.c b/src/mod/codecs/mod_iSAC/arith_routines_logist.c new file mode 100644 index 0000000000..422855a4ce --- /dev/null +++ b/src/mod/codecs/mod_iSAC/arith_routines_logist.c @@ -0,0 +1,294 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * arith_routines.h + * + * This file contains functions for arithmatically encoding and + * decoding DFT coefficients. + * + */ + + +#include "arith_routines.h" + + + +static const WebRtc_Word32 kHistEdgesQ15[51] = { + -327680, -314573, -301466, -288359, -275252, -262144, -249037, -235930, -222823, -209716, + -196608, -183501, -170394, -157287, -144180, -131072, -117965, -104858, -91751, -78644, + -65536, -52429, -39322, -26215, -13108, 0, 13107, 26214, 39321, 52428, + 65536, 78643, 91750, 104857, 117964, 131072, 144179, 157286, 170393, 183500, + 196608, 209715, 222822, 235929, 249036, 262144, 275251, 288358, 301465, 314572, + 327680}; + + +static const int kCdfSlopeQ0[51] = { /* Q0 */ + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, + 5, 5, 13, 23, 47, 87, 154, 315, 700, 1088, + 2471, 6064, 14221, 21463, 36634, 36924, 19750, 13270, 5806, 2312, + 1095, 660, 316, 145, 86, 41, 32, 5, 5, 5, + 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 0}; + + +static const int kCdfQ16[51] = { /* Q16 */ + 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, + 20, 22, 24, 29, 38, 57, 92, 153, 279, 559, + 994, 1983, 4408, 10097, 18682, 33336, 48105, 56005, 61313, 63636, + 64560, 64998, 65262, 65389, 65447, 65481, 65497, 65510, 65512, 65514, + 65516, 65518, 65520, 65522, 65524, 65526, 65528, 65530, 65532, 65534, + 65535}; + + + +/* function to be converted to fixed point */ +static __inline WebRtc_UWord32 piecewise(WebRtc_Word32 xinQ15) { + + WebRtc_Word32 ind, qtmp1, qtmp2, qtmp3; + WebRtc_UWord32 tmpUW32; + + + qtmp2 = xinQ15; + + if (qtmp2 < kHistEdgesQ15[0]) { + qtmp2 = kHistEdgesQ15[0]; + } + if (qtmp2 > kHistEdgesQ15[50]) { + qtmp2 = kHistEdgesQ15[50]; + } + + qtmp1 = qtmp2 - kHistEdgesQ15[0]; /* Q15 - Q15 = Q15 */ + ind = (qtmp1 * 5) >> 16; /* 2^16 / 5 = 0.4 in Q15 */ + /* Q15 -> Q0 */ + qtmp1 = qtmp2 - kHistEdgesQ15[ind]; /* Q15 - Q15 = Q15 */ + qtmp2 = kCdfSlopeQ0[ind] * qtmp1; /* Q0 * Q15 = Q15 */ + qtmp3 = qtmp2>>15; /* Q15 -> Q0 */ + + tmpUW32 = kCdfQ16[ind] + qtmp3; /* Q0 + Q0 = Q0 */ + return tmpUW32; +} + + + +int WebRtcIsac_EncLogisticMulti2( + Bitstr *streamdata, /* in-/output struct containing bitstream */ + WebRtc_Word16 *dataQ7, /* input: data vector */ + const WebRtc_UWord16 *envQ8, /* input: side info vector defining the width of the pdf */ + const int N, /* input: data vector length / 2 */ + const WebRtc_Word16 isSWB12kHz) +{ + WebRtc_UWord32 W_lower, W_upper; + WebRtc_UWord32 W_upper_LSB, W_upper_MSB; + WebRtc_UWord8 *stream_ptr; + WebRtc_UWord8 *maxStreamPtr; + WebRtc_UWord8 *stream_ptr_carry; + WebRtc_UWord32 cdf_lo, cdf_hi; + int k; + + /* point to beginning of stream buffer */ + stream_ptr = streamdata->stream + streamdata->stream_index; + W_upper = streamdata->W_upper; + + maxStreamPtr = streamdata->stream + STREAM_SIZE_MAX_60 - 1; + for (k = 0; k < N; k++) + { + /* compute cdf_lower and cdf_upper by evaluating the piecewise linear cdf */ + cdf_lo = piecewise((*dataQ7 - 64) * *envQ8); + cdf_hi = piecewise((*dataQ7 + 64) * *envQ8); + + /* test and clip if probability gets too small */ + while (cdf_lo+1 >= cdf_hi) { + /* clip */ + if (*dataQ7 > 0) { + *dataQ7 -= 128; + cdf_hi = cdf_lo; + cdf_lo = piecewise((*dataQ7 - 64) * *envQ8); + } else { + *dataQ7 += 128; + cdf_lo = cdf_hi; + cdf_hi = piecewise((*dataQ7 + 64) * *envQ8); + } + } + + dataQ7++; + // increment only once per 4 iterations for SWB-16kHz or WB + // increment only once per 2 iterations for SWB-12kHz + envQ8 += (isSWB12kHz)? (k & 1):((k & 1) & (k >> 1)); + + + /* update interval */ + W_upper_LSB = W_upper & 0x0000FFFF; + W_upper_MSB = W_upper >> 16; + W_lower = W_upper_MSB * cdf_lo; + W_lower += (W_upper_LSB * cdf_lo) >> 16; + W_upper = W_upper_MSB * cdf_hi; + W_upper += (W_upper_LSB * cdf_hi) >> 16; + + /* shift interval such that it begins at zero */ + W_upper -= ++W_lower; + + /* add integer to bitstream */ + streamdata->streamval += W_lower; + + /* handle carry */ + if (streamdata->streamval < W_lower) + { + /* propagate carry */ + stream_ptr_carry = stream_ptr; + while (!(++(*--stream_ptr_carry))); + } + + /* renormalize interval, store most significant byte of streamval and update streamval */ + while ( !(W_upper & 0xFF000000) ) /* W_upper < 2^24 */ + { + W_upper <<= 8; + *stream_ptr++ = (WebRtc_UWord8) (streamdata->streamval >> 24); + + if(stream_ptr > maxStreamPtr) + { + return -ISAC_DISALLOWED_BITSTREAM_LENGTH; + } + streamdata->streamval <<= 8; + } + } + + /* calculate new stream_index */ + streamdata->stream_index = (int)(stream_ptr - streamdata->stream); + streamdata->W_upper = W_upper; + + return 0; +} + + + +int WebRtcIsac_DecLogisticMulti2( + WebRtc_Word16 *dataQ7, /* output: data vector */ + Bitstr *streamdata, /* in-/output struct containing bitstream */ + const WebRtc_UWord16 *envQ8, /* input: side info vector defining the width of the pdf */ + const WebRtc_Word16 *ditherQ7,/* input: dither vector */ + const int N, /* input: data vector length */ + const WebRtc_Word16 isSWB12kHz) +{ + WebRtc_UWord32 W_lower, W_upper; + WebRtc_UWord32 W_tmp; + WebRtc_UWord32 W_upper_LSB, W_upper_MSB; + WebRtc_UWord32 streamval; + const WebRtc_UWord8 *stream_ptr; + WebRtc_UWord32 cdf_tmp; + WebRtc_Word16 candQ7; + int k; + + stream_ptr = streamdata->stream + streamdata->stream_index; + W_upper = streamdata->W_upper; + if (streamdata->stream_index == 0) /* first time decoder is called for this stream */ + { + /* read first word from bytestream */ + streamval = *stream_ptr << 24; + streamval |= *++stream_ptr << 16; + streamval |= *++stream_ptr << 8; + streamval |= *++stream_ptr; + } else { + streamval = streamdata->streamval; + } + + + for (k = 0; k < N; k++) + { + /* find the integer *data for which streamval lies in [W_lower+1, W_upper] */ + W_upper_LSB = W_upper & 0x0000FFFF; + W_upper_MSB = W_upper >> 16; + + /* find first candidate by inverting the logistic cdf */ + candQ7 = - *ditherQ7 + 64; + cdf_tmp = piecewise(candQ7 * *envQ8); + + W_tmp = W_upper_MSB * cdf_tmp; + W_tmp += (W_upper_LSB * cdf_tmp) >> 16; + if (streamval > W_tmp) + { + W_lower = W_tmp; + candQ7 += 128; + cdf_tmp = piecewise(candQ7 * *envQ8); + + W_tmp = W_upper_MSB * cdf_tmp; + W_tmp += (W_upper_LSB * cdf_tmp) >> 16; + while (streamval > W_tmp) + { + W_lower = W_tmp; + candQ7 += 128; + cdf_tmp = piecewise(candQ7 * *envQ8); + + W_tmp = W_upper_MSB * cdf_tmp; + W_tmp += (W_upper_LSB * cdf_tmp) >> 16; + + /* error check */ + if (W_lower == W_tmp) return -1; + } + W_upper = W_tmp; + + /* another sample decoded */ + *dataQ7 = candQ7 - 64; + } + else + { + W_upper = W_tmp; + candQ7 -= 128; + cdf_tmp = piecewise(candQ7 * *envQ8); + + W_tmp = W_upper_MSB * cdf_tmp; + W_tmp += (W_upper_LSB * cdf_tmp) >> 16; + while ( !(streamval > W_tmp) ) + { + W_upper = W_tmp; + candQ7 -= 128; + cdf_tmp = piecewise(candQ7 * *envQ8); + + W_tmp = W_upper_MSB * cdf_tmp; + W_tmp += (W_upper_LSB * cdf_tmp) >> 16; + + /* error check */ + if (W_upper == W_tmp) return -1; + } + W_lower = W_tmp; + + /* another sample decoded */ + *dataQ7 = candQ7 + 64; + } + ditherQ7++; + dataQ7++; + // increment only once per 4 iterations for SWB-16kHz or WB + // increment only once per 2 iterations for SWB-12kHz + envQ8 += (isSWB12kHz)? (k & 1):((k & 1) & (k >> 1)); + + /* shift interval to start at zero */ + W_upper -= ++W_lower; + + /* add integer to bitstream */ + streamval -= W_lower; + + /* renormalize interval and update streamval */ + while ( !(W_upper & 0xFF000000) ) /* W_upper < 2^24 */ + { + /* read next byte from stream */ + streamval = (streamval << 8) | *++stream_ptr; + W_upper <<= 8; + } + } + + streamdata->stream_index = (int)(stream_ptr - streamdata->stream); + streamdata->W_upper = W_upper; + streamdata->streamval = streamval; + + /* find number of bytes in original stream (determined by current interval width) */ + if ( W_upper > 0x01FFFFFF ) + return streamdata->stream_index - 2; + else + return streamdata->stream_index - 1; +} diff --git a/src/mod/codecs/mod_iSAC/auto_corr_to_refl_coef.c b/src/mod/codecs/mod_iSAC/auto_corr_to_refl_coef.c new file mode 100644 index 0000000000..b7e885898a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/auto_corr_to_refl_coef.c @@ -0,0 +1,103 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + + +/* + * This file contains the function WebRtcSpl_AutoCorrToReflCoef(). + * The description header can be found in signal_processing_library.h + * + */ + +#include "signal_processing_library.h" + +void WebRtcSpl_AutoCorrToReflCoef(G_CONST WebRtc_Word32 *R, int use_order, WebRtc_Word16 *K) +{ + int i, n; + WebRtc_Word16 tmp; + G_CONST WebRtc_Word32 *rptr; + WebRtc_Word32 L_num, L_den; + WebRtc_Word16 *acfptr, *pptr, *wptr, *p1ptr, *w1ptr, ACF[WEBRTC_SPL_MAX_LPC_ORDER], + P[WEBRTC_SPL_MAX_LPC_ORDER], W[WEBRTC_SPL_MAX_LPC_ORDER]; + + // Initialize loop and pointers. + acfptr = ACF; + rptr = R; + pptr = P; + p1ptr = &P[1]; + w1ptr = &W[1]; + wptr = w1ptr; + + // First loop; n=0. Determine shifting. + tmp = WebRtcSpl_NormW32(*R); + *acfptr = (WebRtc_Word16)((*rptr++ << tmp) >> 16); + *pptr++ = *acfptr++; + + // Initialize ACF, P and W. + for (i = 1; i <= use_order; i++) + { + *acfptr = (WebRtc_Word16)((*rptr++ << tmp) >> 16); + *wptr++ = *acfptr; + *pptr++ = *acfptr++; + } + + // Compute reflection coefficients. + for (n = 1; n <= use_order; n++, K++) + { + tmp = WEBRTC_SPL_ABS_W16(*p1ptr); + if (*P < tmp) + { + for (i = n; i <= use_order; i++) + *K++ = 0; + + return; + } + + // Division: WebRtcSpl_div(tmp, *P) + *K = 0; + if (tmp != 0) + { + L_num = tmp; + L_den = *P; + i = 15; + while (i--) + { + (*K) <<= 1; + L_num <<= 1; + if (L_num >= L_den) + { + L_num -= L_den; + (*K)++; + } + } + if (*p1ptr > 0) + *K = -*K; + } + + // Last iteration; don't do Schur recursion. + if (n == use_order) + return; + + // Schur recursion. + pptr = P; + wptr = w1ptr; + tmp = (WebRtc_Word16)(((WebRtc_Word32)*p1ptr * (WebRtc_Word32)*K + 16384) >> 15); + *pptr = WEBRTC_SPL_ADD_SAT_W16( *pptr, tmp ); + pptr++; + for (i = 1; i <= use_order - n; i++) + { + tmp = (WebRtc_Word16)(((WebRtc_Word32)*wptr * (WebRtc_Word32)*K + 16384) >> 15); + *pptr = WEBRTC_SPL_ADD_SAT_W16( *(pptr+1), tmp ); + pptr++; + tmp = (WebRtc_Word16)(((WebRtc_Word32)*pptr * (WebRtc_Word32)*K + 16384) >> 15); + *wptr = WEBRTC_SPL_ADD_SAT_W16( *wptr, tmp ); + wptr++; + } + } +} diff --git a/src/mod/codecs/mod_iSAC/auto_correlation.c b/src/mod/codecs/mod_iSAC/auto_correlation.c new file mode 100644 index 0000000000..a00fde4bc3 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/auto_correlation.c @@ -0,0 +1,141 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + + +/* + * This file contains the function WebRtcSpl_AutoCorrelation(). + * The description header can be found in signal_processing_library.h + * + */ + +#include "signal_processing_library.h" + +int WebRtcSpl_AutoCorrelation(G_CONST WebRtc_Word16* in_vector, + int in_vector_length, + int order, + WebRtc_Word32* result, + int* scale) +{ + WebRtc_Word32 sum; + int i, j; + WebRtc_Word16 smax; // Sample max + G_CONST WebRtc_Word16* xptr1; + G_CONST WebRtc_Word16* xptr2; + WebRtc_Word32* resultptr; + int scaling = 0; + +#ifdef _ARM_OPT_ +#pragma message("NOTE: _ARM_OPT_ optimizations are used") + WebRtc_Word16 loops4; +#endif + + if (order < 0) + order = in_vector_length; + + // Find the max. sample + smax = WebRtcSpl_MaxAbsValueW16(in_vector, in_vector_length); + + // In order to avoid overflow when computing the sum we should scale the samples so that + // (in_vector_length * smax * smax) will not overflow. + + if (smax == 0) + { + scaling = 0; + } else + { + int nbits = WebRtcSpl_GetSizeInBits(in_vector_length); // # of bits in the sum loop + int t = WebRtcSpl_NormW32(WEBRTC_SPL_MUL(smax, smax)); // # of bits to normalize smax + + if (t > nbits) + { + scaling = 0; + } else + { + scaling = nbits - t; + } + + } + + resultptr = result; + + // Perform the actual correlation calculation + for (i = 0; i < order + 1; i++) + { + int loops = (in_vector_length - i); + sum = 0; + xptr1 = in_vector; + xptr2 = &in_vector[i]; +#ifndef _ARM_OPT_ + for (j = loops; j > 0; j--) + { + sum += WEBRTC_SPL_MUL_16_16_RSFT(*xptr1++, *xptr2++, scaling); + } +#else + loops4 = (loops >> 2) << 2; + + if (scaling == 0) + { + for (j = 0; j < loops4; j = j + 4) + { + sum += WEBRTC_SPL_MUL_16_16(*xptr1, *xptr2); + xptr1++; + xptr2++; + sum += WEBRTC_SPL_MUL_16_16(*xptr1, *xptr2); + xptr1++; + xptr2++; + sum += WEBRTC_SPL_MUL_16_16(*xptr1, *xptr2); + xptr1++; + xptr2++; + sum += WEBRTC_SPL_MUL_16_16(*xptr1, *xptr2); + xptr1++; + xptr2++; + } + + for (j = loops4; j < loops; j++) + { + sum += WEBRTC_SPL_MUL_16_16(*xptr1, *xptr2); + xptr1++; + xptr2++; + } + } + else + { + for (j = 0; j < loops4; j = j + 4) + { + sum += WEBRTC_SPL_MUL_16_16_RSFT(*xptr1, *xptr2, scaling); + xptr1++; + xptr2++; + sum += WEBRTC_SPL_MUL_16_16_RSFT(*xptr1, *xptr2, scaling); + xptr1++; + xptr2++; + sum += WEBRTC_SPL_MUL_16_16_RSFT(*xptr1, *xptr2, scaling); + xptr1++; + xptr2++; + sum += WEBRTC_SPL_MUL_16_16_RSFT(*xptr1, *xptr2, scaling); + xptr1++; + xptr2++; + } + + for (j = loops4; j < loops; j++) + { + sum += WEBRTC_SPL_MUL_16_16_RSFT(*xptr1, *xptr2, scaling); + xptr1++; + xptr2++; + } + } + +#endif + *resultptr++ = sum; + } + + *scale = scaling; + + return order + 1; +} diff --git a/src/mod/codecs/mod_iSAC/bandwidth_estimator.c b/src/mod/codecs/mod_iSAC/bandwidth_estimator.c new file mode 100644 index 0000000000..85912efbc8 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/bandwidth_estimator.c @@ -0,0 +1,1024 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * BwEstimator.c + * + * This file contains the code for the Bandwidth Estimator designed + * for iSAC. + * + */ + +#include "bandwidth_estimator.h" +#include "settings.h" +#include "isac.h" + +#include + +/* array of quantization levels for bottle neck info; Matlab code: */ +/* sprintf('%4.1ff, ', logspace(log10(5000), log10(40000), 12)) */ +static const float kQRateTableWb[12] = +{ + 10000.0f, 11115.3f, 12355.1f, 13733.1f, 15264.8f, 16967.3f, + 18859.8f, 20963.3f, 23301.4f, 25900.3f, 28789.0f, 32000.0f}; + + +static const float kQRateTableSwb[24] = +{ + 10000.0f, 11115.3f, 12355.1f, 13733.1f, 15264.8f, 16967.3f, + 18859.8f, 20963.3f, 23153.1f, 25342.9f, 27532.7f, 29722.5f, + 31912.3f, 34102.1f, 36291.9f, 38481.7f, 40671.4f, 42861.2f, + 45051.0f, 47240.8f, 49430.6f, 51620.4f, 53810.2f, 56000.0f, +}; + + + + +WebRtc_Word32 WebRtcIsac_InitBandwidthEstimator( + BwEstimatorstr* bwest_str, + enum IsacSamplingRate encoderSampRate, + enum IsacSamplingRate decoderSampRate) +{ + switch(encoderSampRate) + { + case kIsacWideband: + { + bwest_str->send_bw_avg = INIT_BN_EST_WB; + break; + } + case kIsacSuperWideband: + { + bwest_str->send_bw_avg = INIT_BN_EST_SWB; + break; + } + default: + return -1; + } + + switch(decoderSampRate) + { + case kIsacWideband: + { + bwest_str->prev_frame_length = INIT_FRAME_LEN_WB; + bwest_str->rec_bw_inv = 1.0f / + (INIT_BN_EST_WB + INIT_HDR_RATE_WB); + bwest_str->rec_bw = (WebRtc_Word32)INIT_BN_EST_WB; + bwest_str->rec_bw_avg_Q = INIT_BN_EST_WB; + bwest_str->rec_bw_avg = INIT_BN_EST_WB + INIT_HDR_RATE_WB; + bwest_str->rec_header_rate = INIT_HDR_RATE_WB; + break; + } + case kIsacSuperWideband: + { + bwest_str->prev_frame_length = INIT_FRAME_LEN_SWB; + bwest_str->rec_bw_inv = 1.0f / + (INIT_BN_EST_SWB + INIT_HDR_RATE_SWB); + bwest_str->rec_bw = (WebRtc_Word32)INIT_BN_EST_SWB; + bwest_str->rec_bw_avg_Q = INIT_BN_EST_SWB; + bwest_str->rec_bw_avg = INIT_BN_EST_SWB + INIT_HDR_RATE_SWB; + bwest_str->rec_header_rate = INIT_HDR_RATE_SWB; + break; + } + default: + return -1; + } + + bwest_str->prev_rec_rtp_number = 0; + bwest_str->prev_rec_arr_ts = 0; + bwest_str->prev_rec_send_ts = 0; + bwest_str->prev_rec_rtp_rate = 1.0f; + bwest_str->last_update_ts = 0; + bwest_str->last_reduction_ts = 0; + bwest_str->count_tot_updates_rec = -9; + bwest_str->rec_jitter = 10.0f; + bwest_str->rec_jitter_short_term = 0.0f; + bwest_str->rec_jitter_short_term_abs = 5.0f; + bwest_str->rec_max_delay = 10.0f; + bwest_str->rec_max_delay_avg_Q = 10.0f; + bwest_str->num_pkts_rec = 0; + + bwest_str->send_max_delay_avg = 10.0f; + + bwest_str->hsn_detect_rec = 0; + + bwest_str->num_consec_rec_pkts_over_30k = 0; + + bwest_str->hsn_detect_snd = 0; + + bwest_str->num_consec_snt_pkts_over_30k = 0; + + bwest_str->in_wait_period = 0; + + bwest_str->change_to_WB = 0; + + bwest_str->numConsecLatePkts = 0; + bwest_str->consecLatency = 0; + bwest_str->inWaitLatePkts = 0; + bwest_str->senderTimestamp = 0; + bwest_str->receiverTimestamp = 0; + return 0; +} + +/* This function updates both bottle neck rates */ +/* Parameters: */ +/* rtp_number - value from RTP packet, from NetEq */ +/* frame length - length of signal frame in ms, from iSAC decoder */ +/* send_ts - value in RTP header giving send time in samples */ +/* arr_ts - value given by timeGetTime() time of arrival in samples of packet from NetEq */ +/* pksize - size of packet in bytes, from NetEq */ +/* Index - integer (range 0...23) indicating bottle neck & jitter as estimated by other side */ +/* returns 0 if everything went fine, -1 otherwise */ +WebRtc_Word16 WebRtcIsac_UpdateBandwidthEstimator( + BwEstimatorstr *bwest_str, + const WebRtc_UWord16 rtp_number, + const WebRtc_Word32 frame_length, + const WebRtc_UWord32 send_ts, + const WebRtc_UWord32 arr_ts, + const WebRtc_Word32 pksize + /*, const WebRtc_UWord16 Index*/) +{ + float weight = 0.0f; + float curr_bw_inv = 0.0f; + float rec_rtp_rate; + float t_diff_proj; + float arr_ts_diff; + float send_ts_diff; + float arr_time_noise; + float arr_time_noise_abs; + + float delay_correction_factor = 1; + float late_diff = 0.0f; + int immediate_set = 0; + int num_pkts_expected; + + + // We have to adjust the header-rate if the first packet has a + // frame-size different than the initialized value. + if ( frame_length != bwest_str->prev_frame_length ) + { + bwest_str->rec_header_rate = (float)HEADER_SIZE * 8.0f * + 1000.0f / (float)frame_length; /* bits/s */ + } + + /* UPDATE ESTIMATES ON THIS SIDE */ + /* compute far-side transmission rate */ + rec_rtp_rate = ((float)pksize * 8.0f * 1000.0f / (float)frame_length) + + bwest_str->rec_header_rate; + // rec_rtp_rate packet bits/s + header bits/s + + /* check for timer wrap-around */ + if (arr_ts < bwest_str->prev_rec_arr_ts) + { + bwest_str->prev_rec_arr_ts = arr_ts; + bwest_str->last_update_ts = arr_ts; + bwest_str->last_reduction_ts = arr_ts + 3*FS; + bwest_str->num_pkts_rec = 0; + + /* store frame length */ + bwest_str->prev_frame_length = frame_length; + + /* store far-side transmission rate */ + bwest_str->prev_rec_rtp_rate = rec_rtp_rate; + + /* store far-side RTP time stamp */ + bwest_str->prev_rec_rtp_number = rtp_number; + + return 0; + } + + bwest_str->num_pkts_rec++; + + /* check that it's not one of the first 9 packets */ + if ( bwest_str->count_tot_updates_rec > 0 ) + { + if(bwest_str->in_wait_period > 0 ) + { + bwest_str->in_wait_period--; + } + + bwest_str->inWaitLatePkts -= ((bwest_str->inWaitLatePkts > 0)? 1:0); + send_ts_diff = (float)(send_ts - bwest_str->prev_rec_send_ts); + + if (send_ts_diff <= (16 * frame_length)*2) + //doesn't allow for a dropped packet, not sure necessary to be + // that strict -DH + { + /* if not been updated for a long time, reduce the BN estimate */ + if((WebRtc_UWord32)(arr_ts - bwest_str->last_update_ts) * + 1000.0f / FS > 3000) + { + //how many frames should have been received since the last + // update if too many have been dropped or there have been + // big delays won't allow this reduction may no longer need + // the send_ts_diff here + num_pkts_expected = (int)(((float)(arr_ts - + bwest_str->last_update_ts) * 1000.0f /(float) FS) / + (float)frame_length); + + if(((float)bwest_str->num_pkts_rec/(float)num_pkts_expected) > + 0.9) + { + float inv_bitrate = (float) pow( 0.99995, + (double)((WebRtc_UWord32)(arr_ts - + bwest_str->last_reduction_ts)*1000.0f/FS) ); + + if ( inv_bitrate ) + { + bwest_str->rec_bw_inv /= inv_bitrate; + + //precautionary, likely never necessary + if (bwest_str->hsn_detect_snd && + bwest_str->hsn_detect_rec) + { + if (bwest_str->rec_bw_inv > 0.000066f) + { + bwest_str->rec_bw_inv = 0.000066f; + } + } + } + else + { + bwest_str->rec_bw_inv = 1.0f / + (INIT_BN_EST_WB + INIT_HDR_RATE_WB); + } + /* reset time-since-update counter */ + bwest_str->last_reduction_ts = arr_ts; + } + else + //reset here? + { + bwest_str->last_reduction_ts = arr_ts + 3*FS; + bwest_str->last_update_ts = arr_ts; + bwest_str->num_pkts_rec = 0; + } + } + } + else + { + bwest_str->last_reduction_ts = arr_ts + 3*FS; + bwest_str->last_update_ts = arr_ts; + bwest_str->num_pkts_rec = 0; + } + + + /* temporarily speed up adaptation if frame length has changed */ + if ( frame_length != bwest_str->prev_frame_length ) + { + bwest_str->count_tot_updates_rec = 10; + bwest_str->rec_header_rate = (float)HEADER_SIZE * 8.0f * + 1000.0f / (float)frame_length; /* bits/s */ + + bwest_str->rec_bw_inv = 1.0f /((float)bwest_str->rec_bw + + bwest_str->rec_header_rate); + } + + //////////////////////// + arr_ts_diff = (float)(arr_ts - bwest_str->prev_rec_arr_ts); + + if (send_ts_diff > 0 ) + { + late_diff = arr_ts_diff - send_ts_diff; + } + else + { + late_diff = arr_ts_diff - (float)(16 * frame_length); + } + + if((late_diff > 0) && !bwest_str->inWaitLatePkts) + { + bwest_str->numConsecLatePkts++; + bwest_str->consecLatency += late_diff; + } + else + { + bwest_str->numConsecLatePkts = 0; + bwest_str->consecLatency = 0; + } + if(bwest_str->numConsecLatePkts > 50) + { + float latencyMs = bwest_str->consecLatency/(FS/1000); + float averageLatencyMs = latencyMs / bwest_str->numConsecLatePkts; + delay_correction_factor = frame_length / (frame_length + averageLatencyMs); + immediate_set = 1; + bwest_str->inWaitLatePkts = (WebRtc_Word16)((bwest_str->consecLatency/(FS/1000)) / 30);// + 150; + bwest_str->start_wait_period = arr_ts; + } + /////////////////////////////////////////////// + + + + /* update only if previous packet was not lost */ + if ( rtp_number == bwest_str->prev_rec_rtp_number + 1 ) + { + + + if (!(bwest_str->hsn_detect_snd && bwest_str->hsn_detect_rec)) + { + if ((arr_ts_diff > (float)(16 * frame_length))) + { + //1/2 second + if ((late_diff > 8000.0f) && !bwest_str->in_wait_period) + { + delay_correction_factor = 0.7f; + bwest_str->in_wait_period = 55; + bwest_str->start_wait_period = arr_ts; + immediate_set = 1; + } + //320 ms + else if (late_diff > 5120.0f && !bwest_str->in_wait_period) + { + delay_correction_factor = 0.8f; + immediate_set = 1; + bwest_str->in_wait_period = 44; + bwest_str->start_wait_period = arr_ts; + } + } + } + + + if ((bwest_str->prev_rec_rtp_rate > bwest_str->rec_bw_avg) && + (rec_rtp_rate > bwest_str->rec_bw_avg) && + !bwest_str->in_wait_period) + { + /* test if still in initiation period and increment counter */ + if (bwest_str->count_tot_updates_rec++ > 99) + { + /* constant weight after initiation part */ + weight = 0.01f; + } + else + { + /* weight decreases with number of updates */ + weight = 1.0f / (float) bwest_str->count_tot_updates_rec; + } + /* Bottle Neck Estimation */ + + /* limit outliers */ + /* if more than 25 ms too much */ + if (arr_ts_diff > frame_length * FS/1000 + 400.0f) + { + // in samples, why 25ms?? + arr_ts_diff = frame_length * FS/1000 + 400.0f; + } + if(arr_ts_diff < (frame_length * FS/1000) - 160.0f) + { + /* don't allow it to be less than frame rate - 10 ms */ + arr_ts_diff = (float)frame_length * FS/1000 - 160.0f; + } + + /* compute inverse receiving rate for last packet */ + curr_bw_inv = arr_ts_diff / ((float)(pksize + HEADER_SIZE) * + 8.0f * FS); // (180+35)*8*16000 = 27.5 Mbit.... + + + if(curr_bw_inv < + (1.0f / (MAX_ISAC_BW + bwest_str->rec_header_rate))) + { + // don't allow inv rate to be larger than MAX + curr_bw_inv = (1.0f / + (MAX_ISAC_BW + bwest_str->rec_header_rate)); + } + + /* update bottle neck rate estimate */ + bwest_str->rec_bw_inv = weight * curr_bw_inv + + (1.0f - weight) * bwest_str->rec_bw_inv; + + /* reset time-since-update counter */ + bwest_str->last_update_ts = arr_ts; + bwest_str->last_reduction_ts = arr_ts + 3 * FS; + bwest_str->num_pkts_rec = 0; + + /* Jitter Estimation */ + /* projected difference between arrival times */ + t_diff_proj = ((float)(pksize + HEADER_SIZE) * 8.0f * + 1000.0f) / bwest_str->rec_bw_avg; + + + // difference between projected and actual + // arrival time differences + arr_time_noise = (float)(arr_ts_diff*1000.0f/FS) - + t_diff_proj; + arr_time_noise_abs = (float) fabs( arr_time_noise ); + + /* long term averaged absolute jitter */ + bwest_str->rec_jitter = weight * arr_time_noise_abs + + (1.0f - weight) * bwest_str->rec_jitter; + if (bwest_str->rec_jitter > 10.0f) + { + bwest_str->rec_jitter = 10.0f; + } + /* short term averaged absolute jitter */ + bwest_str->rec_jitter_short_term_abs = 0.05f * + arr_time_noise_abs + 0.95f * + bwest_str->rec_jitter_short_term_abs; + + /* short term averaged jitter */ + bwest_str->rec_jitter_short_term = 0.05f * arr_time_noise + + 0.95f * bwest_str->rec_jitter_short_term; + } + } + } + else + { + // reset time-since-update counter when + // receiving the first 9 packets + bwest_str->last_update_ts = arr_ts; + bwest_str->last_reduction_ts = arr_ts + 3*FS; + bwest_str->num_pkts_rec = 0; + + bwest_str->count_tot_updates_rec++; + } + + /* limit minimum bottle neck rate */ + if (bwest_str->rec_bw_inv > 1.0f / ((float)MIN_ISAC_BW + + bwest_str->rec_header_rate)) + { + bwest_str->rec_bw_inv = 1.0f / ((float)MIN_ISAC_BW + + bwest_str->rec_header_rate); + } + + // limit maximum bitrate + if (bwest_str->rec_bw_inv < 1.0f / ((float)MAX_ISAC_BW + + bwest_str->rec_header_rate)) + { + bwest_str->rec_bw_inv = 1.0f / ((float)MAX_ISAC_BW + + bwest_str->rec_header_rate); + } + + /* store frame length */ + bwest_str->prev_frame_length = frame_length; + + /* store far-side transmission rate */ + bwest_str->prev_rec_rtp_rate = rec_rtp_rate; + + /* store far-side RTP time stamp */ + bwest_str->prev_rec_rtp_number = rtp_number; + + // Replace bwest_str->rec_max_delay by the new + // value (atomic operation) + bwest_str->rec_max_delay = 3.0f * bwest_str->rec_jitter; + + /* store send and arrival time stamp */ + bwest_str->prev_rec_arr_ts = arr_ts ; + bwest_str->prev_rec_send_ts = send_ts; + + /* Replace bwest_str->rec_bw by the new value (atomic operation) */ + bwest_str->rec_bw = (WebRtc_Word32)(1.0f / bwest_str->rec_bw_inv - + bwest_str->rec_header_rate); + + if (immediate_set) + { + bwest_str->rec_bw = (WebRtc_Word32) (delay_correction_factor * + (float) bwest_str->rec_bw); + + if (bwest_str->rec_bw < (WebRtc_Word32) MIN_ISAC_BW) + { + bwest_str->rec_bw = (WebRtc_Word32) MIN_ISAC_BW; + } + + bwest_str->rec_bw_avg = bwest_str->rec_bw + + bwest_str->rec_header_rate; + + bwest_str->rec_bw_avg_Q = (float) bwest_str->rec_bw; + + bwest_str->rec_jitter_short_term = 0.0f; + + bwest_str->rec_bw_inv = 1.0f / (bwest_str->rec_bw + + bwest_str->rec_header_rate); + + bwest_str->count_tot_updates_rec = 1; + + immediate_set = 0; + bwest_str->consecLatency = 0; + bwest_str->numConsecLatePkts = 0; + } + + return 0; +} + + +/* This function updates the send bottle neck rate */ +/* Index - integer (range 0...23) indicating bottle neck & jitter as estimated by other side */ +/* returns 0 if everything went fine, -1 otherwise */ +WebRtc_Word16 WebRtcIsac_UpdateUplinkBwImpl( + BwEstimatorstr* bwest_str, + WebRtc_Word16 index, + enum IsacSamplingRate encoderSamplingFreq) +{ + if((index < 0) || (index > 23)) + { + return -ISAC_RANGE_ERROR_BW_ESTIMATOR; + } + + /* UPDATE ESTIMATES FROM OTHER SIDE */ + if(encoderSamplingFreq == kIsacWideband) + { + if(index > 11) + { + index -= 12; + /* compute the jitter estimate as decoded on the other side */ + bwest_str->send_max_delay_avg = 0.9f * bwest_str->send_max_delay_avg + + 0.1f * (float)MAX_ISAC_MD; + } + else + { + /* compute the jitter estimate as decoded on the other side */ + bwest_str->send_max_delay_avg = 0.9f * bwest_str->send_max_delay_avg + + 0.1f * (float)MIN_ISAC_MD; + } + + /* compute the BN estimate as decoded on the other side */ + bwest_str->send_bw_avg = 0.9f * bwest_str->send_bw_avg + + 0.1f * kQRateTableWb[index]; + } + else + { + /* compute the BN estimate as decoded on the other side */ + bwest_str->send_bw_avg = 0.9f * bwest_str->send_bw_avg + + 0.1f * kQRateTableSwb[index]; + } + + if (bwest_str->send_bw_avg > (float) 28000 && !bwest_str->hsn_detect_snd) + { + bwest_str->num_consec_snt_pkts_over_30k++; + + if (bwest_str->num_consec_snt_pkts_over_30k >= 66) + { + //approx 2 seconds with 30ms frames + bwest_str->hsn_detect_snd = 1; + } + } + else if (!bwest_str->hsn_detect_snd) + { + bwest_str->num_consec_snt_pkts_over_30k = 0; + } + return 0; +} + +// called when there is upper-band bit-stream to update jitter +// statistics. +WebRtc_Word16 WebRtcIsac_UpdateUplinkJitter( + BwEstimatorstr* bwest_str, + WebRtc_Word32 index) +{ + if((index < 0) || (index > 23)) + { + return -ISAC_RANGE_ERROR_BW_ESTIMATOR; + } + + if(index > 0) + { + /* compute the jitter estimate as decoded on the other side */ + bwest_str->send_max_delay_avg = 0.9f * bwest_str->send_max_delay_avg + + 0.1f * (float)MAX_ISAC_MD; + } + else + { + /* compute the jitter estimate as decoded on the other side */ + bwest_str->send_max_delay_avg = 0.9f * bwest_str->send_max_delay_avg + + 0.1f * (float)MIN_ISAC_MD; + } + + return 0; +} + + + +// Returns the bandwidth/jitter estimation code (integer 0...23) +// to put in the sending iSAC payload +WebRtc_UWord16 +WebRtcIsac_GetDownlinkBwJitIndexImpl( + BwEstimatorstr* bwest_str, + WebRtc_Word16* bottleneckIndex, + WebRtc_Word16* jitterInfo, + enum IsacSamplingRate decoderSamplingFreq) +{ + float MaxDelay; + //WebRtc_UWord16 MaxDelayBit; + + float rate; + float r; + float e1, e2; + const float weight = 0.1f; + const float* ptrQuantizationTable; + WebRtc_Word16 addJitterInfo; + WebRtc_Word16 minInd; + WebRtc_Word16 maxInd; + WebRtc_Word16 midInd; + + /* Get Max Delay Bit */ + /* get unquantized max delay */ + MaxDelay = (float)WebRtcIsac_GetDownlinkMaxDelay(bwest_str); + + if ( ((1.f - weight) * bwest_str->rec_max_delay_avg_Q + weight * + MAX_ISAC_MD - MaxDelay) > (MaxDelay - (1.f-weight) * + bwest_str->rec_max_delay_avg_Q - weight * MIN_ISAC_MD) ) + { + jitterInfo[0] = 0; + /* update quantized average */ + bwest_str->rec_max_delay_avg_Q = + (1.f - weight) * bwest_str->rec_max_delay_avg_Q + weight * + (float)MIN_ISAC_MD; + } + else + { + jitterInfo[0] = 1; + /* update quantized average */ + bwest_str->rec_max_delay_avg_Q = + (1.f-weight) * bwest_str->rec_max_delay_avg_Q + weight * + (float)MAX_ISAC_MD; + } + + // Get unquantized rate. + rate = (float)WebRtcIsac_GetDownlinkBandwidth(bwest_str); + + /* Get Rate Index */ + if(decoderSamplingFreq == kIsacWideband) + { + ptrQuantizationTable = kQRateTableWb; + addJitterInfo = 1; + maxInd = 11; + } + else + { + ptrQuantizationTable = kQRateTableSwb; + addJitterInfo = 0; + maxInd = 23; + } + + minInd = 0; + while(maxInd > minInd + 1) + { + midInd = (maxInd + minInd) >> 1; + if(rate > ptrQuantizationTable[midInd]) + { + minInd = midInd; + } + else + { + maxInd = midInd; + } + } + // Chose the index which gives results an average which is closest + // to rate + r = (1 - weight) * bwest_str->rec_bw_avg_Q - rate; + e1 = weight * ptrQuantizationTable[minInd] + r; + e2 = weight * ptrQuantizationTable[maxInd] + r; + e1 = (e1 > 0)? e1:-e1; + e2 = (e2 > 0)? e2:-e2; + if(e1 < e2) + { + bottleneckIndex[0] = minInd; + } + else + { + bottleneckIndex[0] = maxInd; + } + + bwest_str->rec_bw_avg_Q = (1 - weight) * bwest_str->rec_bw_avg_Q + + weight * ptrQuantizationTable[bottleneckIndex[0]]; + bottleneckIndex[0] += jitterInfo[0] * 12 * addJitterInfo; + + bwest_str->rec_bw_avg = (1 - weight) * bwest_str->rec_bw_avg + weight * + (rate + bwest_str->rec_header_rate); + + return 0; +} + + + +/* get the bottle neck rate from far side to here, as estimated on this side */ +WebRtc_Word32 WebRtcIsac_GetDownlinkBandwidth( const BwEstimatorstr *bwest_str) +{ + WebRtc_Word32 rec_bw; + float jitter_sign; + float bw_adjust; + + /* create a value between -1.0 and 1.0 indicating "average sign" of jitter */ + jitter_sign = bwest_str->rec_jitter_short_term / + bwest_str->rec_jitter_short_term_abs; + + /* adjust bw proportionally to negative average jitter sign */ + bw_adjust = 1.0f - jitter_sign * (0.15f + 0.15f * jitter_sign * jitter_sign); + + /* adjust Rate if jitter sign is mostly constant */ + rec_bw = (WebRtc_Word32)(bwest_str->rec_bw * bw_adjust); + + /* limit range of bottle neck rate */ + if (rec_bw < MIN_ISAC_BW) + { + rec_bw = MIN_ISAC_BW; + } + else if (rec_bw > MAX_ISAC_BW) + { + rec_bw = MAX_ISAC_BW; + } + return rec_bw; +} + +/* Returns the max delay (in ms) */ +WebRtc_Word32 +WebRtcIsac_GetDownlinkMaxDelay(const BwEstimatorstr *bwest_str) +{ + WebRtc_Word32 rec_max_delay; + + rec_max_delay = (WebRtc_Word32)(bwest_str->rec_max_delay); + + /* limit range of jitter estimate */ + if (rec_max_delay < MIN_ISAC_MD) + { + rec_max_delay = MIN_ISAC_MD; + } + else if (rec_max_delay > MAX_ISAC_MD) + { + rec_max_delay = MAX_ISAC_MD; + } + return rec_max_delay; +} + +/* get the bottle neck rate from here to far side, as estimated by far side */ +void +WebRtcIsac_GetUplinkBandwidth( + const BwEstimatorstr* bwest_str, + WebRtc_Word32* bitRate) +{ + /* limit range of bottle neck rate */ + if (bwest_str->send_bw_avg < MIN_ISAC_BW) + { + *bitRate = MIN_ISAC_BW; + } + else if (bwest_str->send_bw_avg > MAX_ISAC_BW) + { + *bitRate = MAX_ISAC_BW; + } + else + { + *bitRate = (WebRtc_Word32)(bwest_str->send_bw_avg); + } + return; +} + +/* Returns the max delay value from the other side in ms */ +WebRtc_Word32 +WebRtcIsac_GetUplinkMaxDelay(const BwEstimatorstr *bwest_str) +{ + WebRtc_Word32 send_max_delay; + + send_max_delay = (WebRtc_Word32)(bwest_str->send_max_delay_avg); + + /* limit range of jitter estimate */ + if (send_max_delay < MIN_ISAC_MD) + { + send_max_delay = MIN_ISAC_MD; + } + else if (send_max_delay > MAX_ISAC_MD) + { + send_max_delay = MAX_ISAC_MD; + } + return send_max_delay; +} + + +/* + * update long-term average bitrate and amount of data in buffer + * returns minimum payload size (bytes) + */ +int WebRtcIsac_GetMinBytes( + RateModel* State, + int StreamSize, /* bytes in bitstream */ + const int FrameSamples, /* samples per frame */ + const double BottleNeck, /* bottle neck rate; excl headers (bps) */ + const double DelayBuildUp, /* max delay from bottleneck buffering (ms) */ + enum ISACBandwidth bandwidth + /*,WebRtc_Word16 frequentLargePackets*/) +{ + double MinRate = 0.0; + int MinBytes; + double TransmissionTime; + int burstInterval = BURST_INTERVAL; + + // first 10 packets @ low rate, then INIT_BURST_LEN packets @ + // fixed rate of INIT_RATE bps + if (State->InitCounter > 0) + { + if (State->InitCounter-- <= INIT_BURST_LEN) + { + if(bandwidth == isac8kHz) + { + MinRate = INIT_RATE_WB; + } + else + { + MinRate = INIT_RATE_SWB; + } + } + else + { + MinRate = 0; + } + } + else + { + /* handle burst */ + if (State->BurstCounter) + { + if (State->StillBuffered < (1.0 - 1.0/BURST_LEN) * DelayBuildUp) + { + /* max bps derived from BottleNeck and DelayBuildUp values */ + MinRate = (1.0 + (FS/1000) * DelayBuildUp / + (double)(BURST_LEN * FrameSamples)) * BottleNeck; + } + else + { + // max bps derived from StillBuffered and DelayBuildUp + // values + MinRate = (1.0 + (FS/1000) * (DelayBuildUp - + State->StillBuffered) / (double)FrameSamples) * BottleNeck; + if (MinRate < 1.04 * BottleNeck) + { + MinRate = 1.04 * BottleNeck; + } + } + State->BurstCounter--; + } + } + + + /* convert rate from bits/second to bytes/packet */ + MinBytes = (int) (MinRate * FrameSamples / (8.0 * FS)); + + /* StreamSize will be adjusted if less than MinBytes */ + if (StreamSize < MinBytes) + { + StreamSize = MinBytes; + } + + /* keep track of when bottle neck was last exceeded by at least 1% */ + if (StreamSize * 8.0 * FS / FrameSamples > 1.01 * BottleNeck) { + if (State->PrevExceed) { + /* bottle_neck exceded twice in a row, decrease ExceedAgo */ + State->ExceedAgo -= /*BURST_INTERVAL*/ burstInterval / (BURST_LEN - 1); + if (State->ExceedAgo < 0) + State->ExceedAgo = 0; + } + else + { + State->ExceedAgo += (FrameSamples * 1000) / FS; /* ms */ + State->PrevExceed = 1; + } + } + else + { + State->PrevExceed = 0; + State->ExceedAgo += (FrameSamples * 1000) / FS; /* ms */ + } + + /* set burst flag if bottle neck not exceeded for long time */ + if ((State->ExceedAgo > burstInterval) && + (State->BurstCounter == 0)) + { + if (State->PrevExceed) + { + State->BurstCounter = BURST_LEN - 1; + } + else + { + State->BurstCounter = BURST_LEN; + } + } + + + /* Update buffer delay */ + TransmissionTime = StreamSize * 8.0 * 1000.0 / BottleNeck; /* ms */ + State->StillBuffered += TransmissionTime; + State->StillBuffered -= (FrameSamples * 1000) / FS; /* ms */ + if (State->StillBuffered < 0.0) + { + State->StillBuffered = 0.0; + } + + return MinBytes; +} + + +/* + * update long-term average bitrate and amount of data in buffer + */ +void WebRtcIsac_UpdateRateModel( + RateModel *State, + int StreamSize, /* bytes in bitstream */ + const int FrameSamples, /* samples per frame */ + const double BottleNeck) /* bottle neck rate; excl headers (bps) */ +{ + double TransmissionTime; + + /* avoid the initial "high-rate" burst */ + State->InitCounter = 0; + + /* Update buffer delay */ + TransmissionTime = StreamSize * 8.0 * 1000.0 / BottleNeck; /* ms */ + State->StillBuffered += TransmissionTime; + State->StillBuffered -= (FrameSamples * 1000) / FS; /* ms */ + if (State->StillBuffered < 0.0) + State->StillBuffered = 0.0; + +} + + +void WebRtcIsac_InitRateModel( + RateModel *State) +{ + State->PrevExceed = 0; /* boolean */ + State->ExceedAgo = 0; /* ms */ + State->BurstCounter = 0; /* packets */ + State->InitCounter = INIT_BURST_LEN + 10; /* packets */ + State->StillBuffered = 1.0; /* ms */ +} + +int WebRtcIsac_GetNewFrameLength( + double bottle_neck, + int current_framesamples) +{ + int new_framesamples; + + const int Thld_20_30 = 20000; + + //const int Thld_30_20 = 30000; + const int Thld_30_20 = 1000000; // disable 20 ms frames + + const int Thld_30_60 = 18000; + //const int Thld_30_60 = 0; // disable 60 ms frames + + const int Thld_60_30 = 27000; + + + new_framesamples = current_framesamples; + + /* find new framelength */ + switch(current_framesamples) { + case 320: + if (bottle_neck < Thld_20_30) + new_framesamples = 480; + break; + case 480: + if (bottle_neck < Thld_30_60) + new_framesamples = 960; + else if (bottle_neck > Thld_30_20) + new_framesamples = 320; + break; + case 960: + if (bottle_neck >= Thld_60_30) + new_framesamples = 480; + break; + } + + return new_framesamples; +} + +double WebRtcIsac_GetSnr( + double bottle_neck, + int framesamples) +{ + double s2nr; + + const double a_20 = -30.0; + const double b_20 = 0.8; + const double c_20 = 0.0; + + const double a_30 = -23.0; + const double b_30 = 0.48; + const double c_30 = 0.0; + + const double a_60 = -23.0; + const double b_60 = 0.53; + const double c_60 = 0.0; + + + /* find new SNR value */ + switch(framesamples) { + case 320: + s2nr = a_20 + b_20 * bottle_neck * 0.001 + c_20 * bottle_neck * + bottle_neck * 0.000001; + break; + case 480: + s2nr = a_30 + b_30 * bottle_neck * 0.001 + c_30 * bottle_neck * + bottle_neck * 0.000001; + break; + case 960: + s2nr = a_60 + b_60 * bottle_neck * 0.001 + c_60 * bottle_neck * + bottle_neck * 0.000001; + break; + default: + s2nr = 0; + } + + return s2nr; + +} diff --git a/src/mod/codecs/mod_iSAC/bandwidth_estimator.h b/src/mod/codecs/mod_iSAC/bandwidth_estimator.h new file mode 100644 index 0000000000..5604d7bbbd --- /dev/null +++ b/src/mod/codecs/mod_iSAC/bandwidth_estimator.h @@ -0,0 +1,177 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * bandwidth_estimator.h + * + * This header file contains the API for the Bandwidth Estimator + * designed for iSAC. + * + */ + +#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_BANDWIDTH_ESTIMATOR_H_ +#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_BANDWIDTH_ESTIMATOR_H_ + +#include "structs.h" +#include "settings.h" + + +#define MIN_ISAC_BW 10000 +#define MIN_ISAC_BW_LB 10000 +#define MIN_ISAC_BW_UB 25000 + +#define MAX_ISAC_BW 56000 +#define MAX_ISAC_BW_UB 32000 +#define MAX_ISAC_BW_LB 32000 + +#define MIN_ISAC_MD 5 +#define MAX_ISAC_MD 25 + +// assumed header size, in bytes; we don't know the exact number +// (header compression may be used) +#define HEADER_SIZE 35 + +// Initial Frame-Size, in ms, for Wideband & Super-Wideband Mode +#define INIT_FRAME_LEN_WB 60 +#define INIT_FRAME_LEN_SWB 30 + +// Initial Bottleneck Estimate, in bits/sec, for +// Wideband & Super-wideband mode +#define INIT_BN_EST_WB 20e3f +#define INIT_BN_EST_SWB 56e3f + +// Initial Header rate (header rate depends on frame-size), +// in bits/sec, for Wideband & Super-Wideband mode. +#define INIT_HDR_RATE_WB \ + ((float)HEADER_SIZE * 8.0f * 1000.0f / (float)INIT_FRAME_LEN_WB) +#define INIT_HDR_RATE_SWB \ + ((float)HEADER_SIZE * 8.0f * 1000.0f / (float)INIT_FRAME_LEN_SWB) + +// number of packets in a row for a high rate burst +#define BURST_LEN 3 + +// ms, max time between two full bursts +#define BURST_INTERVAL 500 + +// number of packets in a row for initial high rate burst +#define INIT_BURST_LEN 5 + +// bits/s, rate for the first BURST_LEN packets +#define INIT_RATE_WB INIT_BN_EST_WB +#define INIT_RATE_SWB INIT_BN_EST_SWB + + +#if defined(__cplusplus) +extern "C" { +#endif + + /* This function initializes the struct */ + /* to be called before using the struct for anything else */ + /* returns 0 if everything went fine, -1 otherwise */ + WebRtc_Word32 WebRtcIsac_InitBandwidthEstimator( + BwEstimatorstr* bwest_str, + enum IsacSamplingRate encoderSampRate, + enum IsacSamplingRate decoderSampRate); + + /* This function updates the receiving estimate */ + /* Parameters: */ + /* rtp_number - value from RTP packet, from NetEq */ + /* frame length - length of signal frame in ms, from iSAC decoder */ + /* send_ts - value in RTP header giving send time in samples */ + /* arr_ts - value given by timeGetTime() time of arrival in samples of packet from NetEq */ + /* pksize - size of packet in bytes, from NetEq */ + /* Index - integer (range 0...23) indicating bottle neck & jitter as estimated by other side */ + /* returns 0 if everything went fine, -1 otherwise */ + WebRtc_Word16 WebRtcIsac_UpdateBandwidthEstimator( + BwEstimatorstr* bwest_str, + const WebRtc_UWord16 rtp_number, + const WebRtc_Word32 frame_length, + const WebRtc_UWord32 send_ts, + const WebRtc_UWord32 arr_ts, + const WebRtc_Word32 pksize); + + /* Update receiving estimates. Used when we only receive BWE index, no iSAC data packet. */ + WebRtc_Word16 WebRtcIsac_UpdateUplinkBwImpl( + BwEstimatorstr* bwest_str, + WebRtc_Word16 Index, + enum IsacSamplingRate encoderSamplingFreq); + + /* Returns the bandwidth/jitter estimation code (integer 0...23) to put in the sending iSAC payload */ + WebRtc_UWord16 WebRtcIsac_GetDownlinkBwJitIndexImpl( + BwEstimatorstr* bwest_str, + WebRtc_Word16* bottleneckIndex, + WebRtc_Word16* jitterInfo, + enum IsacSamplingRate decoderSamplingFreq); + + /* Returns the bandwidth estimation (in bps) */ + WebRtc_Word32 WebRtcIsac_GetDownlinkBandwidth( + const BwEstimatorstr *bwest_str); + + /* Returns the max delay (in ms) */ + WebRtc_Word32 WebRtcIsac_GetDownlinkMaxDelay( + const BwEstimatorstr *bwest_str); + + /* Returns the bandwidth that iSAC should send with in bps */ + void WebRtcIsac_GetUplinkBandwidth( + const BwEstimatorstr* bwest_str, + WebRtc_Word32* bitRate); + + /* Returns the max delay value from the other side in ms */ + WebRtc_Word32 WebRtcIsac_GetUplinkMaxDelay( + const BwEstimatorstr *bwest_str); + + + /* + * update amount of data in bottle neck buffer and burst handling + * returns minimum payload size (bytes) + */ + int WebRtcIsac_GetMinBytes( + RateModel* State, + int StreamSize, /* bytes in bitstream */ + const int FrameLen, /* ms per frame */ + const double BottleNeck, /* bottle neck rate; excl headers (bps) */ + const double DelayBuildUp, /* max delay from bottleneck buffering (ms) */ + enum ISACBandwidth bandwidth + /*,WebRtc_Word16 frequentLargePackets*/); + + /* + * update long-term average bitrate and amount of data in buffer + */ + void WebRtcIsac_UpdateRateModel( + RateModel* State, + int StreamSize, /* bytes in bitstream */ + const int FrameSamples, /* samples per frame */ + const double BottleNeck); /* bottle neck rate; excl headers (bps) */ + + + void WebRtcIsac_InitRateModel( + RateModel *State); + + /* Returns the new framelength value (input argument: bottle_neck) */ + int WebRtcIsac_GetNewFrameLength( + double bottle_neck, + int current_framelength); + + /* Returns the new SNR value (input argument: bottle_neck) */ + double WebRtcIsac_GetSnr( + double bottle_neck, + int new_framelength); + + + WebRtc_Word16 WebRtcIsac_UpdateUplinkJitter( + BwEstimatorstr* bwest_str, + WebRtc_Word32 index); + +#if defined(__cplusplus) +} +#endif + + +#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_BANDWIDTH_ESTIMATOR_H_ */ diff --git a/src/mod/codecs/mod_iSAC/codec.h b/src/mod/codecs/mod_iSAC/codec.h new file mode 100644 index 0000000000..6af27ea9e0 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/codec.h @@ -0,0 +1,292 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * codec.h + * + * This header file contains the calls to the internal encoder + * and decoder functions. + * + */ + +#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_CODEC_H_ +#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_CODEC_H_ + +#include "structs.h" + +int WebRtcIsac_EstimateBandwidth( + BwEstimatorstr* bwest_str, + Bitstr* streamdata, + WebRtc_Word32 packet_size, + WebRtc_UWord16 rtp_seq_number, + WebRtc_UWord32 send_ts, + WebRtc_UWord32 arr_ts, + enum IsacSamplingRate encoderSampRate, + enum IsacSamplingRate decoderSampRate); + +int WebRtcIsac_DecodeLb( + float* signal_out, + ISACLBDecStruct* ISACdec_obj, + WebRtc_Word16* current_framesamples, + WebRtc_Word16 isRCUPayload); + +int WebRtcIsac_DecodeRcuLb( + float* signal_out, + ISACLBDecStruct* ISACdec_obj, + WebRtc_Word16* current_framesamples); + +int WebRtcIsac_EncodeLb( + float* in, + ISACLBEncStruct* ISACencLB_obj, + WebRtc_Word16 codingMode, + WebRtc_Word16 bottleneckIndex); + +int WebRtcIsac_EncodeStoredDataLb( + const ISAC_SaveEncData_t* ISACSavedEnc_obj, + Bitstr* ISACBitStr_obj, + int BWnumber, + float scale); + + +int WebRtcIsac_EncodeStoredDataUb12( + const ISACUBSaveEncDataStruct* ISACSavedEnc_obj, + Bitstr* bitStream, + WebRtc_Word32 jitterInfo, + float scale); + +int WebRtcIsac_EncodeStoredDataUb16( + const ISACUBSaveEncDataStruct* ISACSavedEnc_obj, + Bitstr* bitStream, + WebRtc_Word32 jitterInfo, + float scale); + + +WebRtc_Word16 WebRtcIsac_GetRedPayloadUb( + const ISACUBSaveEncDataStruct* ISACSavedEncObj, + Bitstr* bitStreamObj, + enum ISACBandwidth bandwidth); +/****************************************************************************** + * WebRtcIsac_RateAllocation() + * Internal function to perform a rate-allocation for upper and lower-band, + * given a total rate. + * + * Input: + * - inRateBitPerSec : a total bit-rate in bits/sec. + * + * Output: + * - rateLBBitPerSec : a bit-rate allocated to the lower-band + * in bits/sec. + * - rateUBBitPerSec : a bit-rate allocated to the upper-band + * in bits/sec. + * + * Return value : 0 if rate allocation has been successful. + * -1 if failed to allocate rates. + */ + +WebRtc_Word16 +WebRtcIsac_RateAllocation( + WebRtc_Word32 inRateBitPerSec, + double* rateLBBitPerSec, + double* rateUBBitPerSec, + enum ISACBandwidth* bandwidthKHz); + + +/****************************************************************************** + * WebRtcIsac_DecodeUb16() + * + * Decode the upper-band if the codec is in 0-16 kHz mode. + * + * Input/Output: + * -ISACdec_obj : pointer to the upper-band decoder object. The + * bit-stream is stored inside the decoder object. + * + * Output: + * -signal_out : decoded audio, 480 samples 30 ms. + * + * Return value : >0 number of decoded bytes. + * <0 if an error occurred. + */ +int WebRtcIsac_DecodeUb16( + float* signal_out, + ISACUBDecStruct* ISACdec_obj, + WebRtc_Word16 isRCUPayload); + + +/****************************************************************************** + * WebRtcIsac_DecodeUb12() + * + * Decode the upper-band if the codec is in 0-12 kHz mode. + * + * Input/Output: + * -ISACdec_obj : pointer to the upper-band decoder object. The + * bit-stream is stored inside the decoder object. + * + * Output: + * -signal_out : decoded audio, 480 samples 30 ms. + * + * Return value : >0 number of decoded bytes. + * <0 if an error occurred. + */ +int WebRtcIsac_DecodeUb12( + float* signal_out, + ISACUBDecStruct* ISACdec_obj, + WebRtc_Word16 isRCUPayload); + + +/****************************************************************************** + * WebRtcIsac_EncodeUb16() + * + * Encode the upper-band if the codec is in 0-16 kHz mode. + * + * Input: + * -in : upper-band audio, 160 samples (10 ms). + * + * Input/Output: + * -ISACdec_obj : pointer to the upper-band encoder object. The + * bit-stream is stored inside the encoder object. + * + * Return value : >0 number of encoded bytes. + * <0 if an error occurred. + */ +int WebRtcIsac_EncodeUb16( + float* in, + ISACUBEncStruct* ISACenc_obj, + WebRtc_Word32 jitterInfo); + + +/****************************************************************************** + * WebRtcIsac_EncodeUb12() + * + * Encode the upper-band if the codec is in 0-12 kHz mode. + * + * Input: + * -in : upper-band audio, 160 samples (10 ms). + * + * Input/Output: + * -ISACdec_obj : pointer to the upper-band encoder object. The + * bit-stream is stored inside the encoder object. + * + * Return value : >0 number of encoded bytes. + * <0 if an error occurred. + */ +int WebRtcIsac_EncodeUb12( + float* in, + ISACUBEncStruct* ISACenc_obj, + WebRtc_Word32 jitterInfo); + +/************************** initialization functions *************************/ + +void WebRtcIsac_InitMasking(MaskFiltstr *maskdata); + +void WebRtcIsac_InitPreFilterbank(PreFiltBankstr *prefiltdata); + +void WebRtcIsac_InitPostFilterbank(PostFiltBankstr *postfiltdata); + +void WebRtcIsac_InitPitchFilter(PitchFiltstr *pitchfiltdata); + +void WebRtcIsac_InitPitchAnalysis(PitchAnalysisStruct *State); + + +/**************************** transform functions ****************************/ + +void WebRtcIsac_InitTransform(); + +void WebRtcIsac_Time2Spec(double *inre1, + double *inre2, + WebRtc_Word16 *outre, + WebRtc_Word16 *outim, + FFTstr *fftstr_obj); + +void WebRtcIsac_Spec2time(double *inre, + double *inim, + double *outre1, + double *outre2, + FFTstr *fftstr_obj); + + +/******************************* filter functions ****************************/ + +void WebRtcIsac_AllPoleFilter(double *InOut, + double *Coef, + int lengthInOut, + int orderCoef); + +void WebRtcIsac_AllZeroFilter(double *In, + double *Coef, + int lengthInOut, + int orderCoef, + double *Out); + +void WebRtcIsac_ZeroPoleFilter(double *In, + double *ZeroCoef, + double *PoleCoef, + int lengthInOut, + int orderCoef, + double *Out); + + +/***************************** filterbank functions **************************/ + +void WebRtcIsac_SplitAndFilter(double *in, + double *LP, + double *HP, + double *LP_la, + double *HP_la, + PreFiltBankstr *prefiltdata); + + +void WebRtcIsac_FilterAndCombine(double *InLP, + double *InHP, + double *Out, + PostFiltBankstr *postfiltdata); + + + +void WebRtcIsac_SplitAndFilterFloat(float *in, + float *LP, + float *HP, + double *LP_la, + double *HP_la, + PreFiltBankstr *prefiltdata); + + +void WebRtcIsac_FilterAndCombineFloat(float *InLP, + float *InHP, + float *Out, + PostFiltBankstr *postfiltdata); + + +/************************* normalized lattice filters ************************/ + +void WebRtcIsac_NormLatticeFilterMa(int orderCoef, + float *stateF, + float *stateG, + float *lat_in, + double *filtcoeflo, + double *lat_out); + +void WebRtcIsac_NormLatticeFilterAr(int orderCoef, + float *stateF, + float *stateG, + double *lat_in, + double *lo_filt_coef, + float *lat_out); + +void WebRtcIsac_Dir2Lat(double *a, + int orderCoef, + float *sth, + float *cth); + +void WebRtcIsac_AutoCorr(double *r, + const double *x, + int N, + int order); + +#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_CODEC_H_ */ diff --git a/src/mod/codecs/mod_iSAC/complex_bit_reverse.c b/src/mod/codecs/mod_iSAC/complex_bit_reverse.c new file mode 100644 index 0000000000..85c76f8283 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/complex_bit_reverse.c @@ -0,0 +1,51 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + + +/* + * This file contains the function WebRtcSpl_ComplexBitReverse(). + * The description header can be found in signal_processing_library.h + * + */ + +#include "signal_processing_library.h" + +void WebRtcSpl_ComplexBitReverse(WebRtc_Word16 frfi[], int stages) +{ + int mr, nn, n, l, m; + WebRtc_Word16 tr, ti; + + n = 1 << stages; + + mr = 0; + nn = n - 1; + + // decimation in time - re-order data + for (m = 1; m <= nn; ++m) + { + l = n; + do + { + l >>= 1; + } while (mr + l > nn); + mr = (mr & (l - 1)) + l; + + if (mr <= m) + continue; + + tr = frfi[2 * m]; + frfi[2 * m] = frfi[2 * mr]; + frfi[2 * mr] = tr; + + ti = frfi[2 * m + 1]; + frfi[2 * m + 1] = frfi[2 * mr + 1]; + frfi[2 * mr + 1] = ti; + } +} diff --git a/src/mod/codecs/mod_iSAC/complex_fft.c b/src/mod/codecs/mod_iSAC/complex_fft.c new file mode 100644 index 0000000000..1e8503c245 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/complex_fft.c @@ -0,0 +1,425 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + + +/* + * This file contains the function WebRtcSpl_ComplexFFT(). + * The description header can be found in signal_processing_library.h + * + */ + +#include "signal_processing_library.h" + +#define CFFTSFT 14 +#define CFFTRND 1 +#define CFFTRND2 16384 + +#define CIFFTSFT 14 +#define CIFFTRND 1 + +static const WebRtc_Word16 kSinTable1024[] = { + 0, 201, 402, 603, 804, 1005, 1206, 1406, + 1607, 1808, 2009, 2209, 2410, 2610, 2811, 3011, + 3211, 3411, 3611, 3811, 4011, 4210, 4409, 4608, + 4807, 5006, 5205, 5403, 5601, 5799, 5997, 6195, + 6392, 6589, 6786, 6982, 7179, 7375, 7571, 7766, + 7961, 8156, 8351, 8545, 8739, 8932, 9126, 9319, + 9511, 9703, 9895, 10087, 10278, 10469, 10659, 10849, + 11038, 11227, 11416, 11604, 11792, 11980, 12166, 12353, + 12539, 12724, 12909, 13094, 13278, 13462, 13645, 13827, + 14009, 14191, 14372, 14552, 14732, 14911, 15090, 15268, + 15446, 15623, 15799, 15975, 16150, 16325, 16499, 16672, + 16845, 17017, 17189, 17360, 17530, 17699, 17868, 18036, + 18204, 18371, 18537, 18702, 18867, 19031, 19194, 19357, + 19519, 19680, 19840, 20000, 20159, 20317, 20474, 20631, + 20787, 20942, 21096, 21249, 21402, 21554, 21705, 21855, + 22004, 22153, 22301, 22448, 22594, 22739, 22883, 23027, + 23169, 23311, 23452, 23592, 23731, 23869, 24006, 24143, + 24278, 24413, 24546, 24679, 24811, 24942, 25072, 25201, + 25329, 25456, 25582, 25707, 25831, 25954, 26077, 26198, + 26318, 26437, 26556, 26673, 26789, 26905, 27019, 27132, + 27244, 27355, 27466, 27575, 27683, 27790, 27896, 28001, + 28105, 28208, 28309, 28410, 28510, 28608, 28706, 28802, + 28897, 28992, 29085, 29177, 29268, 29358, 29446, 29534, + 29621, 29706, 29790, 29873, 29955, 30036, 30116, 30195, + 30272, 30349, 30424, 30498, 30571, 30643, 30713, 30783, + 30851, 30918, 30984, 31049, + 31113, 31175, 31236, 31297, + 31356, 31413, 31470, 31525, 31580, 31633, 31684, 31735, + 31785, 31833, 31880, 31926, 31970, 32014, 32056, 32097, + 32137, 32176, 32213, 32249, 32284, 32318, 32350, 32382, + 32412, 32441, 32468, 32495, 32520, 32544, 32567, 32588, + 32609, 32628, 32646, 32662, 32678, 32692, 32705, 32717, + 32727, 32736, 32744, 32751, 32757, 32761, 32764, 32766, + 32767, 32766, 32764, 32761, 32757, 32751, 32744, 32736, + 32727, 32717, 32705, 32692, 32678, 32662, 32646, 32628, + 32609, 32588, 32567, 32544, 32520, 32495, 32468, 32441, + 32412, 32382, 32350, 32318, 32284, 32249, 32213, 32176, + 32137, 32097, 32056, 32014, 31970, 31926, 31880, 31833, + 31785, 31735, 31684, 31633, 31580, 31525, 31470, 31413, + 31356, 31297, 31236, 31175, 31113, 31049, 30984, 30918, + 30851, 30783, 30713, 30643, 30571, 30498, 30424, 30349, + 30272, 30195, 30116, 30036, 29955, 29873, 29790, 29706, + 29621, 29534, 29446, 29358, 29268, 29177, 29085, 28992, + 28897, 28802, 28706, 28608, 28510, 28410, 28309, 28208, + 28105, 28001, 27896, 27790, 27683, 27575, 27466, 27355, + 27244, 27132, 27019, 26905, 26789, 26673, 26556, 26437, + 26318, 26198, 26077, 25954, 25831, 25707, 25582, 25456, + 25329, 25201, 25072, 24942, 24811, 24679, 24546, 24413, + 24278, 24143, 24006, 23869, 23731, 23592, 23452, 23311, + 23169, 23027, 22883, 22739, 22594, 22448, 22301, 22153, + 22004, 21855, 21705, 21554, 21402, 21249, 21096, 20942, + 20787, 20631, 20474, 20317, 20159, 20000, 19840, 19680, + 19519, 19357, 19194, 19031, 18867, 18702, 18537, 18371, + 18204, 18036, 17868, 17699, 17530, 17360, 17189, 17017, + 16845, 16672, 16499, 16325, 16150, 15975, 15799, 15623, + 15446, 15268, 15090, 14911, 14732, 14552, 14372, 14191, + 14009, 13827, 13645, 13462, 13278, 13094, 12909, 12724, + 12539, 12353, 12166, 11980, 11792, 11604, 11416, 11227, + 11038, 10849, 10659, 10469, 10278, 10087, 9895, 9703, + 9511, 9319, 9126, 8932, 8739, 8545, 8351, 8156, + 7961, 7766, 7571, 7375, 7179, 6982, 6786, 6589, + 6392, 6195, 5997, 5799, 5601, 5403, 5205, 5006, + 4807, 4608, 4409, 4210, 4011, 3811, 3611, 3411, + 3211, 3011, 2811, 2610, 2410, 2209, 2009, 1808, + 1607, 1406, 1206, 1005, 804, 603, 402, 201, + 0, -201, -402, -603, -804, -1005, -1206, -1406, + -1607, -1808, -2009, -2209, -2410, -2610, -2811, -3011, + -3211, -3411, -3611, -3811, -4011, -4210, -4409, -4608, + -4807, -5006, -5205, -5403, -5601, -5799, -5997, -6195, + -6392, -6589, -6786, -6982, -7179, -7375, -7571, -7766, + -7961, -8156, -8351, -8545, -8739, -8932, -9126, -9319, + -9511, -9703, -9895, -10087, -10278, -10469, -10659, -10849, + -11038, -11227, -11416, -11604, -11792, -11980, -12166, -12353, + -12539, -12724, -12909, -13094, -13278, -13462, -13645, -13827, + -14009, -14191, -14372, -14552, -14732, -14911, -15090, -15268, + -15446, -15623, -15799, -15975, -16150, -16325, -16499, -16672, + -16845, -17017, -17189, -17360, -17530, -17699, -17868, -18036, + -18204, -18371, -18537, -18702, -18867, -19031, -19194, -19357, + -19519, -19680, -19840, -20000, -20159, -20317, -20474, -20631, + -20787, -20942, -21096, -21249, -21402, -21554, -21705, -21855, + -22004, -22153, -22301, -22448, -22594, -22739, -22883, -23027, + -23169, -23311, -23452, -23592, -23731, -23869, -24006, -24143, + -24278, -24413, -24546, -24679, -24811, -24942, -25072, -25201, + -25329, -25456, -25582, -25707, -25831, -25954, -26077, -26198, + -26318, -26437, -26556, -26673, -26789, -26905, -27019, -27132, + -27244, -27355, -27466, -27575, -27683, -27790, -27896, -28001, + -28105, -28208, -28309, -28410, -28510, -28608, -28706, -28802, + -28897, -28992, -29085, -29177, -29268, -29358, -29446, -29534, + -29621, -29706, -29790, -29873, -29955, -30036, -30116, -30195, + -30272, -30349, -30424, -30498, -30571, -30643, -30713, -30783, + -30851, -30918, -30984, -31049, -31113, -31175, -31236, -31297, + -31356, -31413, -31470, -31525, -31580, -31633, -31684, -31735, + -31785, -31833, -31880, -31926, -31970, -32014, -32056, -32097, + -32137, -32176, -32213, -32249, -32284, -32318, -32350, -32382, + -32412, -32441, -32468, -32495, -32520, -32544, -32567, -32588, + -32609, -32628, -32646, -32662, -32678, -32692, -32705, -32717, + -32727, -32736, -32744, -32751, -32757, -32761, -32764, -32766, + -32767, -32766, -32764, -32761, -32757, -32751, -32744, -32736, + -32727, -32717, -32705, -32692, -32678, -32662, -32646, -32628, + -32609, -32588, -32567, -32544, -32520, -32495, -32468, -32441, + -32412, -32382, -32350, -32318, -32284, -32249, -32213, -32176, + -32137, -32097, -32056, -32014, -31970, -31926, -31880, -31833, + -31785, -31735, -31684, -31633, -31580, -31525, -31470, -31413, + -31356, -31297, -31236, -31175, -31113, -31049, -30984, -30918, + -30851, -30783, -30713, -30643, -30571, -30498, -30424, -30349, + -30272, -30195, -30116, -30036, -29955, -29873, -29790, -29706, + -29621, -29534, -29446, -29358, -29268, -29177, -29085, -28992, + -28897, -28802, -28706, -28608, -28510, -28410, -28309, -28208, + -28105, -28001, -27896, -27790, -27683, -27575, -27466, -27355, + -27244, -27132, -27019, -26905, -26789, -26673, -26556, -26437, + -26318, -26198, -26077, -25954, -25831, -25707, -25582, -25456, + -25329, -25201, -25072, -24942, -24811, -24679, -24546, -24413, + -24278, -24143, -24006, -23869, -23731, -23592, -23452, -23311, + -23169, -23027, -22883, -22739, -22594, -22448, -22301, -22153, + -22004, -21855, -21705, -21554, -21402, -21249, -21096, -20942, + -20787, -20631, -20474, -20317, -20159, -20000, -19840, -19680, + -19519, -19357, -19194, -19031, -18867, -18702, -18537, -18371, + -18204, -18036, -17868, -17699, -17530, -17360, -17189, -17017, + -16845, -16672, -16499, -16325, -16150, -15975, -15799, -15623, + -15446, -15268, -15090, -14911, -14732, -14552, -14372, -14191, + -14009, -13827, -13645, -13462, -13278, -13094, -12909, -12724, + -12539, -12353, -12166, -11980, -11792, -11604, -11416, -11227, + -11038, -10849, -10659, -10469, -10278, -10087, -9895, -9703, + -9511, -9319, -9126, -8932, -8739, -8545, -8351, -8156, + -7961, -7766, -7571, -7375, -7179, -6982, -6786, -6589, + -6392, -6195, -5997, -5799, -5601, -5403, -5205, -5006, + -4807, -4608, -4409, -4210, -4011, -3811, -3611, -3411, + -3211, -3011, -2811, -2610, -2410, -2209, -2009, -1808, + -1607, -1406, -1206, -1005, -804, -603, -402, -201 +}; + +int WebRtcSpl_ComplexFFT(WebRtc_Word16 frfi[], int stages, int mode) +{ + int i, j, l, k, istep, n, m; + WebRtc_Word16 wr, wi; + WebRtc_Word32 tr32, ti32, qr32, qi32; + + /* The 1024-value is a constant given from the size of kSinTable1024[], + * and should not be changed depending on the input parameter 'stages' + */ + n = 1 << stages; + if (n > 1024) + return -1; + + l = 1; + k = 10 - 1; /* Constant for given kSinTable1024[]. Do not change + depending on the input parameter 'stages' */ + + if (mode == 0) + { + // mode==0: Low-complexity and Low-accuracy mode + while (l < n) + { + istep = l << 1; + + for (m = 0; m < l; ++m) + { + j = m << k; + + /* The 256-value is a constant given as 1/4 of the size of + * kSinTable1024[], and should not be changed depending on the input + * parameter 'stages'. It will result in 0 <= j < N_SINE_WAVE/2 + */ + wr = kSinTable1024[j + 256]; + wi = -kSinTable1024[j]; + + for (i = m; i < n; i += istep) + { + j = i + l; + + tr32 = WEBRTC_SPL_RSHIFT_W32((WEBRTC_SPL_MUL_16_16(wr, frfi[2 * j]) + - WEBRTC_SPL_MUL_16_16(wi, frfi[2 * j + 1])), 15); + + ti32 = WEBRTC_SPL_RSHIFT_W32((WEBRTC_SPL_MUL_16_16(wr, frfi[2 * j + 1]) + + WEBRTC_SPL_MUL_16_16(wi, frfi[2 * j])), 15); + + qr32 = (WebRtc_Word32)frfi[2 * i]; + qi32 = (WebRtc_Word32)frfi[2 * i + 1]; + frfi[2 * j] = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32(qr32 - tr32, 1); + frfi[2 * j + 1] = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32(qi32 - ti32, 1); + frfi[2 * i] = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32(qr32 + tr32, 1); + frfi[2 * i + 1] = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32(qi32 + ti32, 1); + } + } + + --k; + l = istep; + + } + + } else + { + // mode==1: High-complexity and High-accuracy mode + while (l < n) + { + istep = l << 1; + + for (m = 0; m < l; ++m) + { + j = m << k; + + /* The 256-value is a constant given as 1/4 of the size of + * kSinTable1024[], and should not be changed depending on the input + * parameter 'stages'. It will result in 0 <= j < N_SINE_WAVE/2 + */ + wr = kSinTable1024[j + 256]; + wi = -kSinTable1024[j]; + +#ifdef WEBRTC_ARCH_ARM_V7A + WebRtc_Word32 wri; + WebRtc_Word32 frfi_r; + __asm__("pkhbt %0, %1, %2, lsl #16" : "=r"(wri) : + "r"((WebRtc_Word32)wr), "r"((WebRtc_Word32)wi)); +#endif + + for (i = m; i < n; i += istep) + { + j = i + l; + +#ifdef WEBRTC_ARCH_ARM_V7A + __asm__("pkhbt %0, %1, %2, lsl #16" : "=r"(frfi_r) : + "r"((WebRtc_Word32)frfi[2*j]), "r"((WebRtc_Word32)frfi[2*j +1])); + __asm__("smlsd %0, %1, %2, %3" : "=r"(tr32) : + "r"(wri), "r"(frfi_r), "r"(CFFTRND)); + __asm__("smladx %0, %1, %2, %3" : "=r"(ti32) : + "r"(wri), "r"(frfi_r), "r"(CFFTRND)); + +#else + tr32 = WEBRTC_SPL_MUL_16_16(wr, frfi[2 * j]) + - WEBRTC_SPL_MUL_16_16(wi, frfi[2 * j + 1]) + CFFTRND; + + ti32 = WEBRTC_SPL_MUL_16_16(wr, frfi[2 * j + 1]) + + WEBRTC_SPL_MUL_16_16(wi, frfi[2 * j]) + CFFTRND; +#endif + + tr32 = WEBRTC_SPL_RSHIFT_W32(tr32, 15 - CFFTSFT); + ti32 = WEBRTC_SPL_RSHIFT_W32(ti32, 15 - CFFTSFT); + + qr32 = ((WebRtc_Word32)frfi[2 * i]) << CFFTSFT; + qi32 = ((WebRtc_Word32)frfi[2 * i + 1]) << CFFTSFT; + + frfi[2 * j] = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32( + (qr32 - tr32 + CFFTRND2), 1 + CFFTSFT); + frfi[2 * j + 1] = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32( + (qi32 - ti32 + CFFTRND2), 1 + CFFTSFT); + frfi[2 * i] = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32( + (qr32 + tr32 + CFFTRND2), 1 + CFFTSFT); + frfi[2 * i + 1] = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32( + (qi32 + ti32 + CFFTRND2), 1 + CFFTSFT); + } + } + + --k; + l = istep; + } + } + return 0; +} + +int WebRtcSpl_ComplexIFFT(WebRtc_Word16 frfi[], int stages, int mode) +{ + int i, j, l, k, istep, n, m, scale, shift; + WebRtc_Word16 wr, wi; + WebRtc_Word32 tr32, ti32, qr32, qi32; + WebRtc_Word32 tmp32, round2; + + /* The 1024-value is a constant given from the size of kSinTable1024[], + * and should not be changed depending on the input parameter 'stages' + */ + n = 1 << stages; + if (n > 1024) + return -1; + + scale = 0; + + l = 1; + k = 10 - 1; /* Constant for given kSinTable1024[]. Do not change + depending on the input parameter 'stages' */ + + while (l < n) + { + // variable scaling, depending upon data + shift = 0; + round2 = 8192; + + tmp32 = (WebRtc_Word32)WebRtcSpl_MaxAbsValueW16(frfi, 2 * n); + if (tmp32 > 13573) + { + shift++; + scale++; + round2 <<= 1; + } + if (tmp32 > 27146) + { + shift++; + scale++; + round2 <<= 1; + } + + istep = l << 1; + + if (mode == 0) + { + // mode==0: Low-complexity and Low-accuracy mode + for (m = 0; m < l; ++m) + { + j = m << k; + + /* The 256-value is a constant given as 1/4 of the size of + * kSinTable1024[], and should not be changed depending on the input + * parameter 'stages'. It will result in 0 <= j < N_SINE_WAVE/2 + */ + wr = kSinTable1024[j + 256]; + wi = kSinTable1024[j]; + + for (i = m; i < n; i += istep) + { + j = i + l; + + tr32 = WEBRTC_SPL_RSHIFT_W32((WEBRTC_SPL_MUL_16_16_RSFT(wr, frfi[2 * j], 0) + - WEBRTC_SPL_MUL_16_16_RSFT(wi, frfi[2 * j + 1], 0)), 15); + + ti32 = WEBRTC_SPL_RSHIFT_W32( + (WEBRTC_SPL_MUL_16_16_RSFT(wr, frfi[2 * j + 1], 0) + + WEBRTC_SPL_MUL_16_16_RSFT(wi,frfi[2*j],0)), 15); + + qr32 = (WebRtc_Word32)frfi[2 * i]; + qi32 = (WebRtc_Word32)frfi[2 * i + 1]; + frfi[2 * j] = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32(qr32 - tr32, shift); + frfi[2 * j + 1] = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32(qi32 - ti32, shift); + frfi[2 * i] = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32(qr32 + tr32, shift); + frfi[2 * i + 1] = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32(qi32 + ti32, shift); + } + } + } else + { + // mode==1: High-complexity and High-accuracy mode + + for (m = 0; m < l; ++m) + { + j = m << k; + + /* The 256-value is a constant given as 1/4 of the size of + * kSinTable1024[], and should not be changed depending on the input + * parameter 'stages'. It will result in 0 <= j < N_SINE_WAVE/2 + */ + wr = kSinTable1024[j + 256]; + wi = kSinTable1024[j]; + +#ifdef WEBRTC_ARCH_ARM_V7A + WebRtc_Word32 wri; + WebRtc_Word32 frfi_r; + __asm__("pkhbt %0, %1, %2, lsl #16" : "=r"(wri) : + "r"((WebRtc_Word32)wr), "r"((WebRtc_Word32)wi)); +#endif + + for (i = m; i < n; i += istep) + { + j = i + l; + +#ifdef WEBRTC_ARCH_ARM_V7A + __asm__("pkhbt %0, %1, %2, lsl #16" : "=r"(frfi_r) : + "r"((WebRtc_Word32)frfi[2*j]), "r"((WebRtc_Word32)frfi[2*j +1])); + __asm__("smlsd %0, %1, %2, %3" : "=r"(tr32) : + "r"(wri), "r"(frfi_r), "r"(CIFFTRND)); + __asm__("smladx %0, %1, %2, %3" : "=r"(ti32) : + "r"(wri), "r"(frfi_r), "r"(CIFFTRND)); +#else + + tr32 = WEBRTC_SPL_MUL_16_16(wr, frfi[2 * j]) + - WEBRTC_SPL_MUL_16_16(wi, frfi[2 * j + 1]) + CIFFTRND; + + ti32 = WEBRTC_SPL_MUL_16_16(wr, frfi[2 * j + 1]) + + WEBRTC_SPL_MUL_16_16(wi, frfi[2 * j]) + CIFFTRND; +#endif + tr32 = WEBRTC_SPL_RSHIFT_W32(tr32, 15 - CIFFTSFT); + ti32 = WEBRTC_SPL_RSHIFT_W32(ti32, 15 - CIFFTSFT); + + qr32 = ((WebRtc_Word32)frfi[2 * i]) << CIFFTSFT; + qi32 = ((WebRtc_Word32)frfi[2 * i + 1]) << CIFFTSFT; + + frfi[2 * j] = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32((qr32 - tr32+round2), + shift+CIFFTSFT); + frfi[2 * j + 1] = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32( + (qi32 - ti32 + round2), shift + CIFFTSFT); + frfi[2 * i] = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32((qr32 + tr32 + round2), + shift + CIFFTSFT); + frfi[2 * i + 1] = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32( + (qi32 + ti32 + round2), shift + CIFFTSFT); + } + } + + } + --k; + l = istep; + } + return scale; +} diff --git a/src/mod/codecs/mod_iSAC/copy_set_operations.c b/src/mod/codecs/mod_iSAC/copy_set_operations.c new file mode 100644 index 0000000000..8247337754 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/copy_set_operations.c @@ -0,0 +1,108 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + + +/* + * This file contains the implementation of functions + * WebRtcSpl_MemSetW16() + * WebRtcSpl_MemSetW32() + * WebRtcSpl_MemCpyReversedOrder() + * WebRtcSpl_CopyFromEndW16() + * WebRtcSpl_ZerosArrayW16() + * WebRtcSpl_ZerosArrayW32() + * WebRtcSpl_OnesArrayW16() + * WebRtcSpl_OnesArrayW32() + * + * The description header can be found in signal_processing_library.h + * + */ + +#include +#include "signal_processing_library.h" + + +void WebRtcSpl_MemSetW16(WebRtc_Word16 *ptr, WebRtc_Word16 set_value, int length) +{ + int j; + WebRtc_Word16 *arrptr = ptr; + + for (j = length; j > 0; j--) + { + *arrptr++ = set_value; + } +} + +void WebRtcSpl_MemSetW32(WebRtc_Word32 *ptr, WebRtc_Word32 set_value, int length) +{ + int j; + WebRtc_Word32 *arrptr = ptr; + + for (j = length; j > 0; j--) + { + *arrptr++ = set_value; + } +} + +void WebRtcSpl_MemCpyReversedOrder(WebRtc_Word16* dest, WebRtc_Word16* source, int length) +{ + int j; + WebRtc_Word16* destPtr = dest; + WebRtc_Word16* sourcePtr = source; + + for (j = 0; j < length; j++) + { + *destPtr-- = *sourcePtr++; + } +} + +WebRtc_Word16 WebRtcSpl_CopyFromEndW16(G_CONST WebRtc_Word16 *vector_in, + WebRtc_Word16 length, + WebRtc_Word16 samples, + WebRtc_Word16 *vector_out) +{ + // Copy the last of the input vector to vector_out + WEBRTC_SPL_MEMCPY_W16(vector_out, &vector_in[length - samples], samples); + + return samples; +} + +WebRtc_Word16 WebRtcSpl_ZerosArrayW16(WebRtc_Word16 *vector, WebRtc_Word16 length) +{ + WebRtcSpl_MemSetW16(vector, 0, length); + return length; +} + +WebRtc_Word16 WebRtcSpl_ZerosArrayW32(WebRtc_Word32 *vector, WebRtc_Word16 length) +{ + WebRtcSpl_MemSetW32(vector, 0, length); + return length; +} + +WebRtc_Word16 WebRtcSpl_OnesArrayW16(WebRtc_Word16 *vector, WebRtc_Word16 length) +{ + WebRtc_Word16 i; + WebRtc_Word16 *tmpvec = vector; + for (i = 0; i < length; i++) + { + *tmpvec++ = 1; + } + return length; +} + +WebRtc_Word16 WebRtcSpl_OnesArrayW32(WebRtc_Word32 *vector, WebRtc_Word16 length) +{ + WebRtc_Word16 i; + WebRtc_Word32 *tmpvec = vector; + for (i = 0; i < length; i++) + { + *tmpvec++ = 1; + } + return length; +} diff --git a/src/mod/codecs/mod_iSAC/crc.c b/src/mod/codecs/mod_iSAC/crc.c new file mode 100644 index 0000000000..098e4b7a69 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/crc.c @@ -0,0 +1,110 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#include "crc.h" +#include +#include "signal_processing_library.h" + +#define POLYNOMIAL 0x04c11db7L + + +static const WebRtc_UWord32 kCrcTable[256] = { + 0, 0x4c11db7, 0x9823b6e, 0xd4326d9, 0x130476dc, 0x17c56b6b, + 0x1a864db2, 0x1e475005, 0x2608edb8, 0x22c9f00f, 0x2f8ad6d6, 0x2b4bcb61, + 0x350c9b64, 0x31cd86d3, 0x3c8ea00a, 0x384fbdbd, 0x4c11db70, 0x48d0c6c7, + 0x4593e01e, 0x4152fda9, 0x5f15adac, 0x5bd4b01b, 0x569796c2, 0x52568b75, + 0x6a1936c8, 0x6ed82b7f, 0x639b0da6, 0x675a1011, 0x791d4014, 0x7ddc5da3, + 0x709f7b7a, 0x745e66cd, 0x9823b6e0, 0x9ce2ab57, 0x91a18d8e, 0x95609039, + 0x8b27c03c, 0x8fe6dd8b, 0x82a5fb52, 0x8664e6e5, 0xbe2b5b58, 0xbaea46ef, + 0xb7a96036, 0xb3687d81, 0xad2f2d84, 0xa9ee3033, 0xa4ad16ea, 0xa06c0b5d, + 0xd4326d90, 0xd0f37027, 0xddb056fe, 0xd9714b49, 0xc7361b4c, 0xc3f706fb, + 0xceb42022, 0xca753d95, 0xf23a8028, 0xf6fb9d9f, 0xfbb8bb46, 0xff79a6f1, + 0xe13ef6f4, 0xe5ffeb43, 0xe8bccd9a, 0xec7dd02d, 0x34867077, 0x30476dc0, + 0x3d044b19, 0x39c556ae, 0x278206ab, 0x23431b1c, 0x2e003dc5, 0x2ac12072, + 0x128e9dcf, 0x164f8078, 0x1b0ca6a1, 0x1fcdbb16, 0x18aeb13, 0x54bf6a4, + 0x808d07d, 0xcc9cdca, 0x7897ab07, 0x7c56b6b0, 0x71159069, 0x75d48dde, + 0x6b93dddb, 0x6f52c06c, 0x6211e6b5, 0x66d0fb02, 0x5e9f46bf, 0x5a5e5b08, + 0x571d7dd1, 0x53dc6066, 0x4d9b3063, 0x495a2dd4, 0x44190b0d, 0x40d816ba, + 0xaca5c697, 0xa864db20, 0xa527fdf9, 0xa1e6e04e, 0xbfa1b04b, 0xbb60adfc, + 0xb6238b25, 0xb2e29692, 0x8aad2b2f, 0x8e6c3698, 0x832f1041, 0x87ee0df6, + 0x99a95df3, 0x9d684044, 0x902b669d, 0x94ea7b2a, 0xe0b41de7, 0xe4750050, + 0xe9362689, 0xedf73b3e, 0xf3b06b3b, 0xf771768c, 0xfa325055, 0xfef34de2, + 0xc6bcf05f, 0xc27dede8, 0xcf3ecb31, 0xcbffd686, 0xd5b88683, 0xd1799b34, + 0xdc3abded, 0xd8fba05a, 0x690ce0ee, 0x6dcdfd59, 0x608edb80, 0x644fc637, + 0x7a089632, 0x7ec98b85, 0x738aad5c, 0x774bb0eb, 0x4f040d56, 0x4bc510e1, + 0x46863638, 0x42472b8f, 0x5c007b8a, 0x58c1663d, 0x558240e4, 0x51435d53, + 0x251d3b9e, 0x21dc2629, 0x2c9f00f0, 0x285e1d47, 0x36194d42, 0x32d850f5, + 0x3f9b762c, 0x3b5a6b9b, 0x315d626, 0x7d4cb91, 0xa97ed48, 0xe56f0ff, + 0x1011a0fa, 0x14d0bd4d, 0x19939b94, 0x1d528623, 0xf12f560e, 0xf5ee4bb9, + 0xf8ad6d60, 0xfc6c70d7, 0xe22b20d2, 0xe6ea3d65, 0xeba91bbc, 0xef68060b, + 0xd727bbb6, 0xd3e6a601, 0xdea580d8, 0xda649d6f, 0xc423cd6a, 0xc0e2d0dd, + 0xcda1f604, 0xc960ebb3, 0xbd3e8d7e, 0xb9ff90c9, 0xb4bcb610, 0xb07daba7, + 0xae3afba2, 0xaafbe615, 0xa7b8c0cc, 0xa379dd7b, 0x9b3660c6, 0x9ff77d71, + 0x92b45ba8, 0x9675461f, 0x8832161a, 0x8cf30bad, 0x81b02d74, 0x857130c3, + 0x5d8a9099, 0x594b8d2e, 0x5408abf7, 0x50c9b640, 0x4e8ee645, 0x4a4ffbf2, + 0x470cdd2b, 0x43cdc09c, 0x7b827d21, 0x7f436096, 0x7200464f, 0x76c15bf8, + 0x68860bfd, 0x6c47164a, 0x61043093, 0x65c52d24, 0x119b4be9, 0x155a565e, + 0x18197087, 0x1cd86d30, 0x29f3d35, 0x65e2082, 0xb1d065b, 0xfdc1bec, + 0x3793a651, 0x3352bbe6, 0x3e119d3f, 0x3ad08088, 0x2497d08d, 0x2056cd3a, + 0x2d15ebe3, 0x29d4f654, 0xc5a92679, 0xc1683bce, 0xcc2b1d17, 0xc8ea00a0, + 0xd6ad50a5, 0xd26c4d12, 0xdf2f6bcb, 0xdbee767c, 0xe3a1cbc1, 0xe760d676, + 0xea23f0af, 0xeee2ed18, 0xf0a5bd1d, 0xf464a0aa, 0xf9278673, 0xfde69bc4, + 0x89b8fd09, 0x8d79e0be, 0x803ac667, 0x84fbdbd0, 0x9abc8bd5, 0x9e7d9662, + 0x933eb0bb, 0x97ffad0c, 0xafb010b1, 0xab710d06, 0xa6322bdf, 0xa2f33668, + 0xbcb4666d, 0xb8757bda, 0xb5365d03, 0xb1f740b4 +}; + + + + +/**************************************************************************** + * WebRtcIsac_GetCrc(...) + * + * This function returns a 32 bit CRC checksum of a bit stream + * + * Input: + * - bitstream : payload bitstream + * - len_bitstream_in_bytes : number of 8-bit words in the bit stream + * + * Output: + * - crc : checksum + * + * Return value : 0 - Ok + * -1 - Error + */ + +WebRtc_Word16 WebRtcIsac_GetCrc(const WebRtc_Word16* bitstream, + WebRtc_Word16 len_bitstream_in_bytes, + WebRtc_UWord32* crc) +{ + WebRtc_UWord8* bitstream_ptr_uw8; + WebRtc_UWord32 crc_state; + int byte_cntr; + int crc_tbl_indx; + + /* Sanity Check. */ + if (bitstream == NULL) { + return -1; + } + /* cast to UWord8 pointer */ + bitstream_ptr_uw8 = (WebRtc_UWord8 *)bitstream; + + /* initialize */ + crc_state = 0xFFFFFFFF; + + for (byte_cntr = 0; byte_cntr < len_bitstream_in_bytes; byte_cntr++) { + crc_tbl_indx = (WEBRTC_SPL_RSHIFT_U32(crc_state, 24) ^ + bitstream_ptr_uw8[byte_cntr]) & 0xFF; + crc_state = WEBRTC_SPL_LSHIFT_U32(crc_state, 8) ^ kCrcTable[crc_tbl_indx]; + } + + *crc = ~crc_state; + return 0; +} diff --git a/src/mod/codecs/mod_iSAC/crc.h b/src/mod/codecs/mod_iSAC/crc.h new file mode 100644 index 0000000000..015127894b --- /dev/null +++ b/src/mod/codecs/mod_iSAC/crc.h @@ -0,0 +1,46 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * crc.h + * + * Checksum functions + * + */ + +#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_CRC_H_ +#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_CRC_H_ + +#include "typedefs.h" + +/**************************************************************************** + * WebRtcIsac_GetCrc(...) + * + * This function returns a 32 bit CRC checksum of a bit stream + * + * Input: + * - encoded : payload bit stream + * - no_of_word8s : number of 8-bit words in the bit stream + * + * Output: + * - crc : checksum + * + * Return value : 0 - Ok + * -1 - Error + */ + +WebRtc_Word16 WebRtcIsac_GetCrc( + const WebRtc_Word16* encoded, + WebRtc_Word16 no_of_word8s, + WebRtc_UWord32* crc); + + + +#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_CRC_H_ */ diff --git a/src/mod/codecs/mod_iSAC/cross_correlation.c b/src/mod/codecs/mod_iSAC/cross_correlation.c new file mode 100644 index 0000000000..726a74967b --- /dev/null +++ b/src/mod/codecs/mod_iSAC/cross_correlation.c @@ -0,0 +1,271 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + + +/* + * This file contains the function WebRtcSpl_CrossCorrelation(). + * The description header can be found in signal_processing_library.h + * + */ + +/* TODO(kma): Clean up the code in this file, and break it up for + * various platforms (Xscale, ARM/Neon etc.). + */ + +#include "signal_processing_library.h" + +void WebRtcSpl_CrossCorrelation(WebRtc_Word32* cross_correlation, WebRtc_Word16* seq1, + WebRtc_Word16* seq2, WebRtc_Word16 dim_seq, + WebRtc_Word16 dim_cross_correlation, + WebRtc_Word16 right_shifts, + WebRtc_Word16 step_seq2) +{ + int i, j; + WebRtc_Word16* seq1Ptr; + WebRtc_Word16* seq2Ptr; + WebRtc_Word32* CrossCorrPtr; + +#ifdef _XSCALE_OPT_ + +#ifdef _WIN32 +#pragma message("NOTE: _XSCALE_OPT_ optimizations are used (overrides _ARM_OPT_ and requires /QRxscale compiler flag)") +#endif + + __int64 macc40; + + int iseq1[250]; + int iseq2[250]; + int iseq3[250]; + int * iseq1Ptr; + int * iseq2Ptr; + int * iseq3Ptr; + int len, i_len; + + seq1Ptr = seq1; + iseq1Ptr = iseq1; + for(i = 0; i < ((dim_seq + 1) >> 1); i++) + { + *iseq1Ptr = (unsigned short)*seq1Ptr++; + *iseq1Ptr++ |= (WebRtc_Word32)*seq1Ptr++ << 16; + + } + + if(dim_seq%2) + { + *(iseq1Ptr-1) &= 0x0000ffff; + } + *iseq1Ptr = 0; + iseq1Ptr++; + *iseq1Ptr = 0; + iseq1Ptr++; + *iseq1Ptr = 0; + + if(step_seq2 < 0) + { + seq2Ptr = seq2 - dim_cross_correlation + 1; + CrossCorrPtr = &cross_correlation[dim_cross_correlation - 1]; + } + else + { + seq2Ptr = seq2; + CrossCorrPtr = cross_correlation; + } + + len = dim_seq + dim_cross_correlation - 1; + i_len = (len + 1) >> 1; + iseq2Ptr = iseq2; + + iseq3Ptr = iseq3; + for(i = 0; i < i_len; i++) + { + *iseq2Ptr = (unsigned short)*seq2Ptr++; + *iseq3Ptr = (unsigned short)*seq2Ptr; + *iseq2Ptr++ |= (WebRtc_Word32)*seq2Ptr++ << 16; + *iseq3Ptr++ |= (WebRtc_Word32)*seq2Ptr << 16; + } + + if(len % 2) + { + iseq2[i_len - 1] &= 0x0000ffff; + iseq3[i_len - 1] = 0; + } + else + iseq3[i_len - 1] &= 0x0000ffff; + + iseq2[i_len] = 0; + iseq3[i_len] = 0; + iseq2[i_len + 1] = 0; + iseq3[i_len + 1] = 0; + iseq2[i_len + 2] = 0; + iseq3[i_len + 2] = 0; + + // Set pointer to start value + iseq2Ptr = iseq2; + iseq3Ptr = iseq3; + + i_len = (dim_seq + 7) >> 3; + for (i = 0; i < dim_cross_correlation; i++) + { + + iseq1Ptr = iseq1; + + macc40 = 0; + + _WriteCoProcessor(macc40, 0); + + if((i & 1)) + { + iseq3Ptr = iseq3 + (i >> 1); + for (j = i_len; j > 0; j--) + { + _SmulAddPack_2SW_ACC(*iseq1Ptr++, *iseq3Ptr++); + _SmulAddPack_2SW_ACC(*iseq1Ptr++, *iseq3Ptr++); + _SmulAddPack_2SW_ACC(*iseq1Ptr++, *iseq3Ptr++); + _SmulAddPack_2SW_ACC(*iseq1Ptr++, *iseq3Ptr++); + } + } + else + { + iseq2Ptr = iseq2 + (i >> 1); + for (j = i_len; j > 0; j--) + { + _SmulAddPack_2SW_ACC(*iseq1Ptr++, *iseq2Ptr++); + _SmulAddPack_2SW_ACC(*iseq1Ptr++, *iseq2Ptr++); + _SmulAddPack_2SW_ACC(*iseq1Ptr++, *iseq2Ptr++); + _SmulAddPack_2SW_ACC(*iseq1Ptr++, *iseq2Ptr++); + } + + } + + macc40 = _ReadCoProcessor(0); + *CrossCorrPtr = (WebRtc_Word32)(macc40 >> right_shifts); + CrossCorrPtr += step_seq2; + } +#else // #ifdef _XSCALE_OPT_ +#ifdef _ARM_OPT_ + WebRtc_Word16 dim_seq8 = (dim_seq >> 3) << 3; +#endif + + CrossCorrPtr = cross_correlation; + + for (i = 0; i < dim_cross_correlation; i++) + { + // Set the pointer to the static vector, set the pointer to the sliding vector + // and initialize cross_correlation + seq1Ptr = seq1; + seq2Ptr = seq2 + (step_seq2 * i); + (*CrossCorrPtr) = 0; + +#ifndef _ARM_OPT_ +#ifdef _WIN32 +#pragma message("NOTE: default implementation is used") +#endif + // Perform the cross correlation + for (j = 0; j < dim_seq; j++) + { + (*CrossCorrPtr) += WEBRTC_SPL_MUL_16_16_RSFT((*seq1Ptr), (*seq2Ptr), right_shifts); + seq1Ptr++; + seq2Ptr++; + } +#else +#ifdef _WIN32 +#pragma message("NOTE: _ARM_OPT_ optimizations are used") +#endif + if (right_shifts == 0) + { + // Perform the optimized cross correlation + for (j = 0; j < dim_seq8; j = j + 8) + { + (*CrossCorrPtr) += WEBRTC_SPL_MUL_16_16((*seq1Ptr), (*seq2Ptr)); + seq1Ptr++; + seq2Ptr++; + (*CrossCorrPtr) += WEBRTC_SPL_MUL_16_16((*seq1Ptr), (*seq2Ptr)); + seq1Ptr++; + seq2Ptr++; + (*CrossCorrPtr) += WEBRTC_SPL_MUL_16_16((*seq1Ptr), (*seq2Ptr)); + seq1Ptr++; + seq2Ptr++; + (*CrossCorrPtr) += WEBRTC_SPL_MUL_16_16((*seq1Ptr), (*seq2Ptr)); + seq1Ptr++; + seq2Ptr++; + (*CrossCorrPtr) += WEBRTC_SPL_MUL_16_16((*seq1Ptr), (*seq2Ptr)); + seq1Ptr++; + seq2Ptr++; + (*CrossCorrPtr) += WEBRTC_SPL_MUL_16_16((*seq1Ptr), (*seq2Ptr)); + seq1Ptr++; + seq2Ptr++; + (*CrossCorrPtr) += WEBRTC_SPL_MUL_16_16((*seq1Ptr), (*seq2Ptr)); + seq1Ptr++; + seq2Ptr++; + (*CrossCorrPtr) += WEBRTC_SPL_MUL_16_16((*seq1Ptr), (*seq2Ptr)); + seq1Ptr++; + seq2Ptr++; + } + + for (j = dim_seq8; j < dim_seq; j++) + { + (*CrossCorrPtr) += WEBRTC_SPL_MUL_16_16((*seq1Ptr), (*seq2Ptr)); + seq1Ptr++; + seq2Ptr++; + } + } + else // right_shifts != 0 + + { + // Perform the optimized cross correlation + for (j = 0; j < dim_seq8; j = j + 8) + { + (*CrossCorrPtr) += WEBRTC_SPL_MUL_16_16_RSFT((*seq1Ptr), (*seq2Ptr), + right_shifts); + seq1Ptr++; + seq2Ptr++; + (*CrossCorrPtr) += WEBRTC_SPL_MUL_16_16_RSFT((*seq1Ptr), (*seq2Ptr), + right_shifts); + seq1Ptr++; + seq2Ptr++; + (*CrossCorrPtr) += WEBRTC_SPL_MUL_16_16_RSFT((*seq1Ptr), (*seq2Ptr), + right_shifts); + seq1Ptr++; + seq2Ptr++; + (*CrossCorrPtr) += WEBRTC_SPL_MUL_16_16_RSFT((*seq1Ptr), (*seq2Ptr), + right_shifts); + seq1Ptr++; + seq2Ptr++; + (*CrossCorrPtr) += WEBRTC_SPL_MUL_16_16_RSFT((*seq1Ptr), (*seq2Ptr), + right_shifts); + seq1Ptr++; + seq2Ptr++; + (*CrossCorrPtr) += WEBRTC_SPL_MUL_16_16_RSFT((*seq1Ptr), (*seq2Ptr), + right_shifts); + seq1Ptr++; + seq2Ptr++; + (*CrossCorrPtr) += WEBRTC_SPL_MUL_16_16_RSFT((*seq1Ptr), (*seq2Ptr), + right_shifts); + seq1Ptr++; + seq2Ptr++; + (*CrossCorrPtr) += WEBRTC_SPL_MUL_16_16_RSFT((*seq1Ptr), (*seq2Ptr), + right_shifts); + seq1Ptr++; + seq2Ptr++; + } + + for (j = dim_seq8; j < dim_seq; j++) + { + (*CrossCorrPtr) += WEBRTC_SPL_MUL_16_16_RSFT((*seq1Ptr), (*seq2Ptr), + right_shifts); + seq1Ptr++; + seq2Ptr++; + } + } +#endif + CrossCorrPtr++; + } +#endif +} diff --git a/src/mod/codecs/mod_iSAC/decode.c b/src/mod/codecs/mod_iSAC/decode.c new file mode 100644 index 0000000000..25634b0a89 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/decode.c @@ -0,0 +1,330 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * decode_B.c + * + * This file contains definition of funtions for decoding. + * Decoding of lower-band, including normal-decoding and RCU decoding. + * Decoding of upper-band, including 8-12 kHz, when the bandwidth is + * 0-12 kHz, and 8-16 kHz, when the bandwidth is 0-16 kHz. + * + */ + + +#include "codec.h" +#include "entropy_coding.h" +#include "pitch_estimator.h" +#include "bandwidth_estimator.h" +#include "structs.h" +#include "settings.h" + +#include +#include +#include + + +/* + * function to decode the bitstream + * returns the total number of bytes in the stream + */ +int +WebRtcIsac_DecodeLb( + float* signal_out, + ISACLBDecStruct* ISACdecLB_obj, + WebRtc_Word16* current_framesamples, + WebRtc_Word16 isRCUPayload) +{ + int k, model; + int len, err; + WebRtc_Word16 bandwidthInd; + + float LP_dec_float[FRAMESAMPLES_HALF]; + float HP_dec_float[FRAMESAMPLES_HALF]; + + double LPw[FRAMESAMPLES_HALF]; + double HPw[FRAMESAMPLES_HALF]; + double LPw_pf[FRAMESAMPLES_HALF]; + + double lo_filt_coef[(ORDERLO+1)*SUBFRAMES]; + double hi_filt_coef[(ORDERHI+1)*SUBFRAMES]; + + double real_f[FRAMESAMPLES_HALF]; + double imag_f[FRAMESAMPLES_HALF]; + + double PitchLags[4]; + double PitchGains[4]; + double AvgPitchGain; + WebRtc_Word16 PitchGains_Q12[4]; + WebRtc_Word16 AvgPitchGain_Q12; + + float gain; + + int frame_nb; /* counter */ + int frame_mode; /* 0 for 20ms and 30ms, 1 for 60ms */ + int processed_samples; + + (ISACdecLB_obj->bitstr_obj).W_upper = 0xFFFFFFFF; + (ISACdecLB_obj->bitstr_obj).streamval = 0; + (ISACdecLB_obj->bitstr_obj).stream_index = 0; + + len = 0; + + /* decode framelength and BW estimation - not used, + only for stream pointer*/ + err = WebRtcIsac_DecodeFrameLen(&ISACdecLB_obj->bitstr_obj, + current_framesamples); + if (err < 0) { // error check + return err; + } + + /* frame_mode: 0, or 1 */ + frame_mode = *current_framesamples/MAX_FRAMESAMPLES; + /* processed_samples: either 320 (20ms) or 480 (30, 60 ms) */ + processed_samples = *current_framesamples/(frame_mode+1); + + err = WebRtcIsac_DecodeSendBW(&ISACdecLB_obj->bitstr_obj, &bandwidthInd); + if (err < 0) { // error check + return err; + } + + /* one loop if it's one frame (20 or 30ms), 2 loops if 2 frames + bundled together (60ms) */ + for (frame_nb = 0; frame_nb <= frame_mode; frame_nb++) { + /* decode & dequantize pitch parameters */ + err = WebRtcIsac_DecodePitchGain(&(ISACdecLB_obj->bitstr_obj), + PitchGains_Q12); + if (err < 0) { // error check + return err; + } + + err = WebRtcIsac_DecodePitchLag(&ISACdecLB_obj->bitstr_obj, + PitchGains_Q12, PitchLags); + if (err < 0) { // error check + return err; + } + + AvgPitchGain_Q12 = (PitchGains_Q12[0] + PitchGains_Q12[1] + + PitchGains_Q12[2] + PitchGains_Q12[3])>>2; + + /* decode & dequantize FiltCoef */ + err = WebRtcIsac_DecodeLpc(&ISACdecLB_obj->bitstr_obj, + lo_filt_coef,hi_filt_coef, &model); + if (err < 0) { // error check + return err; + } + /* decode & dequantize spectrum */ + len = WebRtcIsac_DecodeSpecLb(&ISACdecLB_obj->bitstr_obj, + real_f, imag_f, AvgPitchGain_Q12); + if (len < 0) { // error check + return len; + } + + /* inverse transform */ + WebRtcIsac_Spec2time(real_f, imag_f, LPw, HPw, + &ISACdecLB_obj->fftstr_obj); + + /* convert PitchGains back to FLOAT for pitchfilter_post */ + for (k = 0; k < 4; k++) { + PitchGains[k] = ((float)PitchGains_Q12[k])/4096; + } + + if(isRCUPayload) + { + for (k = 0; k < 240; k++) { + LPw[k] *= RCU_TRANSCODING_SCALE_INVERSE; + HPw[k] *= RCU_TRANSCODING_SCALE_INVERSE; + } + } + + /* inverse pitch filter */ + WebRtcIsac_PitchfilterPost(LPw, LPw_pf, + &ISACdecLB_obj->pitchfiltstr_obj, PitchLags, PitchGains); + /* convert AvgPitchGain back to FLOAT for computation of gain */ + AvgPitchGain = ((float)AvgPitchGain_Q12)/4096; + gain = 1.0f - 0.45f * (float)AvgPitchGain; + + for (k = 0; k < FRAMESAMPLES_HALF; k++) { + /* reduce gain to compensate for pitch enhancer */ + LPw_pf[ k ] *= gain; + } + + if(isRCUPayload) + { + for (k = 0; k < FRAMESAMPLES_HALF; k++) { + /* compensation for transcoding gain changes*/ + LPw_pf[k] *= RCU_TRANSCODING_SCALE; + HPw[k] *= RCU_TRANSCODING_SCALE; + } + } + + /* perceptual post-filtering (using normalized lattice filter) */ + WebRtcIsac_NormLatticeFilterAr(ORDERLO, + ISACdecLB_obj->maskfiltstr_obj.PostStateLoF, + (ISACdecLB_obj->maskfiltstr_obj).PostStateLoG, + LPw_pf, lo_filt_coef, LP_dec_float); + WebRtcIsac_NormLatticeFilterAr(ORDERHI, + ISACdecLB_obj->maskfiltstr_obj.PostStateHiF, + (ISACdecLB_obj->maskfiltstr_obj).PostStateHiG, + HPw, hi_filt_coef, HP_dec_float); + + /* recombine the 2 bands */ + WebRtcIsac_FilterAndCombineFloat( LP_dec_float, HP_dec_float, + signal_out + frame_nb * processed_samples, + &ISACdecLB_obj->postfiltbankstr_obj); + } + + return len; +} + + +/* + * This decode function is called when the codec is operating in 16 kHz + * bandwidth to decode the upperband, i.e. 8-16 kHz. + * + * Contrary to lower-band, the upper-band (8-16 kHz) is not split in + * frequency, but split to 12 sub-frames, i.e. twice as lower-band. + */ +int +WebRtcIsac_DecodeUb16( + float* signal_out, + ISACUBDecStruct* ISACdecUB_obj, + WebRtc_Word16 isRCUPayload) +{ + int len, err; + + double halfFrameFirst[FRAMESAMPLES_HALF]; + double halfFrameSecond[FRAMESAMPLES_HALF]; + + double percepFilterParam[(UB_LPC_ORDER+1) * (SUBFRAMES<<1) + + (UB_LPC_ORDER+1)]; + + double real_f[FRAMESAMPLES_HALF]; + double imag_f[FRAMESAMPLES_HALF]; + + len = 0; + + /* decode & dequantize FiltCoef */ + memset(percepFilterParam, 0, sizeof(percepFilterParam)); + err = WebRtcIsac_DecodeInterpolLpcUb(&ISACdecUB_obj->bitstr_obj, + percepFilterParam, isac16kHz); + if (err < 0) { // error check + return err; + } + + /* decode & dequantize spectrum */ + len = WebRtcIsac_DecodeSpecUB16(&ISACdecUB_obj->bitstr_obj, real_f, + imag_f); + if (len < 0) { // error check + return len; + } + if(isRCUPayload) + { + int n; + for(n = 0; n < 240; n++) + { + real_f[n] *= RCU_TRANSCODING_SCALE_UB_INVERSE; + imag_f[n] *= RCU_TRANSCODING_SCALE_UB_INVERSE; + } + } + + /* inverse transform */ + WebRtcIsac_Spec2time(real_f, imag_f, halfFrameFirst, halfFrameSecond, + &ISACdecUB_obj->fftstr_obj); + + /* perceptual post-filtering (using normalized lattice filter) */ + WebRtcIsac_NormLatticeFilterAr(UB_LPC_ORDER, + ISACdecUB_obj->maskfiltstr_obj.PostStateLoF, + (ISACdecUB_obj->maskfiltstr_obj).PostStateLoG, halfFrameFirst, + &percepFilterParam[(UB_LPC_ORDER+1)], signal_out); + + WebRtcIsac_NormLatticeFilterAr(UB_LPC_ORDER, + ISACdecUB_obj->maskfiltstr_obj.PostStateLoF, + (ISACdecUB_obj->maskfiltstr_obj).PostStateLoG, halfFrameSecond, + &percepFilterParam[(UB_LPC_ORDER + 1) * SUBFRAMES + (UB_LPC_ORDER+1)], + &signal_out[FRAMESAMPLES_HALF]); + + return len; +} + +/* + * This decode function is called when the codec operates at 0-12 kHz + * bandwidth to decode the upperband, i.e. 8-12 kHz. + * + * At the encoder the upper-band is split into two band, 8-12 kHz & 12-16 + * kHz, and only 8-12 kHz is encoded. At the decoder, 8-12 kHz band is + * reconstructed and 12-16 kHz replaced with zeros. Then two bands + * are combined, to reconstruct the upperband 8-16 kHz. + */ +int +WebRtcIsac_DecodeUb12( + float* signal_out, + ISACUBDecStruct* ISACdecUB_obj, + WebRtc_Word16 isRCUPayload) +{ + int len, err; + + float LP_dec_float[FRAMESAMPLES_HALF]; + float HP_dec_float[FRAMESAMPLES_HALF]; + + double LPw[FRAMESAMPLES_HALF]; + double HPw[FRAMESAMPLES_HALF]; + + double percepFilterParam[(UB_LPC_ORDER+1)*SUBFRAMES]; + + double real_f[FRAMESAMPLES_HALF]; + double imag_f[FRAMESAMPLES_HALF]; + + len = 0; + + /* decode & dequantize FiltCoef */ + err = WebRtcIsac_DecodeInterpolLpcUb(&ISACdecUB_obj->bitstr_obj, + percepFilterParam, isac12kHz); + if(err < 0) { // error check + return err; + } + + /* decode & dequantize spectrum */ + len = WebRtcIsac_DecodeSpecUB12(&ISACdecUB_obj->bitstr_obj, + real_f, imag_f); + if(len < 0) { // error check + return len; + } + + if(isRCUPayload) + { + int n; + for(n = 0; n < 240; n++) + { + real_f[n] *= RCU_TRANSCODING_SCALE_UB_INVERSE; + imag_f[n] *= RCU_TRANSCODING_SCALE_UB_INVERSE; + } + } + + /* inverse transform */ + WebRtcIsac_Spec2time(real_f, imag_f, LPw, HPw, &ISACdecUB_obj->fftstr_obj); + + /* perceptual post-filtering (using normalized lattice filter) */ + WebRtcIsac_NormLatticeFilterAr(UB_LPC_ORDER, + ISACdecUB_obj->maskfiltstr_obj.PostStateLoF, + (ISACdecUB_obj->maskfiltstr_obj).PostStateLoG, LPw, + percepFilterParam, LP_dec_float); + + /* Zerro for upper-band */ + memset(HP_dec_float, 0, sizeof(float) * (FRAMESAMPLES_HALF)); + + /* recombine the 2 bands */ + WebRtcIsac_FilterAndCombineFloat(HP_dec_float, LP_dec_float, signal_out, + &ISACdecUB_obj->postfiltbankstr_obj); + + + + return len; +} diff --git a/src/mod/codecs/mod_iSAC/decode_bwe.c b/src/mod/codecs/mod_iSAC/decode_bwe.c new file mode 100644 index 0000000000..cdac7fa8bf --- /dev/null +++ b/src/mod/codecs/mod_iSAC/decode_bwe.c @@ -0,0 +1,88 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#include "structs.h" +#include "bandwidth_estimator.h" +#include "entropy_coding.h" +#include "codec.h" + + +int +WebRtcIsac_EstimateBandwidth( + BwEstimatorstr* bwest_str, + Bitstr* streamdata, + WebRtc_Word32 packet_size, + WebRtc_UWord16 rtp_seq_number, + WebRtc_UWord32 send_ts, + WebRtc_UWord32 arr_ts, + enum IsacSamplingRate encoderSampRate, + enum IsacSamplingRate decoderSampRate) +{ + WebRtc_Word16 index; + WebRtc_Word16 frame_samples; + WebRtc_UWord32 sendTimestampIn16kHz; + WebRtc_UWord32 arrivalTimestampIn16kHz; + WebRtc_UWord32 diffSendTime; + WebRtc_UWord32 diffArrivalTime; + int err; + + /* decode framelength and BW estimation */ + err = WebRtcIsac_DecodeFrameLen(streamdata, &frame_samples); + if(err < 0) // error check + { + return err; + } + err = WebRtcIsac_DecodeSendBW(streamdata, &index); + if(err < 0) // error check + { + return err; + } + + /* UPDATE ESTIMATES FROM OTHER SIDE */ + err = WebRtcIsac_UpdateUplinkBwImpl(bwest_str, index, encoderSampRate); + if(err < 0) + { + return err; + } + + // We like BWE to work at 16 kHz sampling rate, + // therefore, we have to change the timestamps accordingly. + // translate the send timestamp if required + diffSendTime = (WebRtc_UWord32)((WebRtc_UWord32)send_ts - + (WebRtc_UWord32)bwest_str->senderTimestamp); + bwest_str->senderTimestamp = send_ts; + + diffArrivalTime = (WebRtc_UWord32)((WebRtc_UWord32)arr_ts - + (WebRtc_UWord32)bwest_str->receiverTimestamp); + bwest_str->receiverTimestamp = arr_ts; + + if(decoderSampRate == kIsacSuperWideband) + { + diffArrivalTime = (WebRtc_UWord32)diffArrivalTime >> 1; + diffSendTime = (WebRtc_UWord32)diffSendTime >> 1; + } + // arrival timestamp in 16 kHz + arrivalTimestampIn16kHz = (WebRtc_UWord32)((WebRtc_UWord32) + bwest_str->prev_rec_arr_ts + (WebRtc_UWord32)diffArrivalTime); + // send timestamp in 16 kHz + sendTimestampIn16kHz = (WebRtc_UWord32)((WebRtc_UWord32) + bwest_str->prev_rec_send_ts + (WebRtc_UWord32)diffSendTime); + + err = WebRtcIsac_UpdateBandwidthEstimator(bwest_str, rtp_seq_number, + (frame_samples * 1000) / FS, sendTimestampIn16kHz, + arrivalTimestampIn16kHz, packet_size); + // error check + if(err < 0) + { + return err; + } + + return 0; +} diff --git a/src/mod/codecs/mod_iSAC/division_operations.c b/src/mod/codecs/mod_iSAC/division_operations.c new file mode 100644 index 0000000000..b143373a2f --- /dev/null +++ b/src/mod/codecs/mod_iSAC/division_operations.c @@ -0,0 +1,144 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + + +/* + * This file contains implementations of the divisions + * WebRtcSpl_DivU32U16() + * WebRtcSpl_DivW32W16() + * WebRtcSpl_DivW32W16ResW16() + * WebRtcSpl_DivResultInQ31() + * WebRtcSpl_DivW32HiLow() + * + * The description header can be found in signal_processing_library.h + * + */ + +#include "signal_processing_library.h" + +WebRtc_UWord32 WebRtcSpl_DivU32U16(WebRtc_UWord32 num, WebRtc_UWord16 den) +{ + // Guard against division with 0 + if (den != 0) + { + return (WebRtc_UWord32)(num / den); + } else + { + return (WebRtc_UWord32)0xFFFFFFFF; + } +} + +WebRtc_Word32 WebRtcSpl_DivW32W16(WebRtc_Word32 num, WebRtc_Word16 den) +{ + // Guard against division with 0 + if (den != 0) + { + return (WebRtc_Word32)(num / den); + } else + { + return (WebRtc_Word32)0x7FFFFFFF; + } +} + +WebRtc_Word16 WebRtcSpl_DivW32W16ResW16(WebRtc_Word32 num, WebRtc_Word16 den) +{ + // Guard against division with 0 + if (den != 0) + { + return (WebRtc_Word16)(num / den); + } else + { + return (WebRtc_Word16)0x7FFF; + } +} + +WebRtc_Word32 WebRtcSpl_DivResultInQ31(WebRtc_Word32 num, WebRtc_Word32 den) +{ + WebRtc_Word32 L_num = num; + WebRtc_Word32 L_den = den; + WebRtc_Word32 div = 0; + int k = 31; + int change_sign = 0; + + if (num == 0) + return 0; + + if (num < 0) + { + change_sign++; + L_num = -num; + } + if (den < 0) + { + change_sign++; + L_den = -den; + } + while (k--) + { + div <<= 1; + L_num <<= 1; + if (L_num >= L_den) + { + L_num -= L_den; + div++; + } + } + if (change_sign == 1) + { + div = -div; + } + return div; +} + +WebRtc_Word32 WebRtcSpl_DivW32HiLow(WebRtc_Word32 num, WebRtc_Word16 den_hi, + WebRtc_Word16 den_low) +{ + WebRtc_Word16 approx, tmp_hi, tmp_low, num_hi, num_low; + WebRtc_Word32 tmpW32; + + approx = (WebRtc_Word16)WebRtcSpl_DivW32W16((WebRtc_Word32)0x1FFFFFFF, den_hi); + // result in Q14 (Note: 3FFFFFFF = 0.5 in Q30) + + // tmpW32 = 1/den = approx * (2.0 - den * approx) (in Q30) + tmpW32 = (WEBRTC_SPL_MUL_16_16(den_hi, approx) << 1) + + ((WEBRTC_SPL_MUL_16_16(den_low, approx) >> 15) << 1); + // tmpW32 = den * approx + + tmpW32 = (WebRtc_Word32)0x7fffffffL - tmpW32; // result in Q30 (tmpW32 = 2.0-(den*approx)) + + // Store tmpW32 in hi and low format + tmp_hi = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32(tmpW32, 16); + tmp_low = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32((tmpW32 + - WEBRTC_SPL_LSHIFT_W32((WebRtc_Word32)tmp_hi, 16)), 1); + + // tmpW32 = 1/den in Q29 + tmpW32 = ((WEBRTC_SPL_MUL_16_16(tmp_hi, approx) + (WEBRTC_SPL_MUL_16_16(tmp_low, approx) + >> 15)) << 1); + + // 1/den in hi and low format + tmp_hi = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32(tmpW32, 16); + tmp_low = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32((tmpW32 + - WEBRTC_SPL_LSHIFT_W32((WebRtc_Word32)tmp_hi, 16)), 1); + + // Store num in hi and low format + num_hi = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32(num, 16); + num_low = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32((num + - WEBRTC_SPL_LSHIFT_W32((WebRtc_Word32)num_hi, 16)), 1); + + // num * (1/den) by 32 bit multiplication (result in Q28) + + tmpW32 = (WEBRTC_SPL_MUL_16_16(num_hi, tmp_hi) + (WEBRTC_SPL_MUL_16_16(num_hi, tmp_low) + >> 15) + (WEBRTC_SPL_MUL_16_16(num_low, tmp_hi) >> 15)); + + // Put result in Q31 (convert from Q28) + tmpW32 = WEBRTC_SPL_LSHIFT_W32(tmpW32, 3); + + return tmpW32; +} diff --git a/src/mod/codecs/mod_iSAC/dot_product_with_scale.c b/src/mod/codecs/mod_iSAC/dot_product_with_scale.c new file mode 100644 index 0000000000..6e085fdb60 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/dot_product_with_scale.c @@ -0,0 +1,91 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + + +/* + * This file contains the function WebRtcSpl_DotProductWithScale(). + * The description header can be found in signal_processing_library.h + * + */ + +#include "signal_processing_library.h" + +WebRtc_Word32 WebRtcSpl_DotProductWithScale(WebRtc_Word16 *vector1, WebRtc_Word16 *vector2, + int length, int scaling) +{ + WebRtc_Word32 sum; + int i; +#ifdef _ARM_OPT_ +#pragma message("NOTE: _ARM_OPT_ optimizations are used") + WebRtc_Word16 len4 = (length >> 2) << 2; +#endif + + sum = 0; + +#ifndef _ARM_OPT_ + for (i = 0; i < length; i++) + { + sum += WEBRTC_SPL_MUL_16_16_RSFT(*vector1++, *vector2++, scaling); + } +#else + if (scaling == 0) + { + for (i = 0; i < len4; i = i + 4) + { + sum += WEBRTC_SPL_MUL_16_16(*vector1, *vector2); + vector1++; + vector2++; + sum += WEBRTC_SPL_MUL_16_16(*vector1, *vector2); + vector1++; + vector2++; + sum += WEBRTC_SPL_MUL_16_16(*vector1, *vector2); + vector1++; + vector2++; + sum += WEBRTC_SPL_MUL_16_16(*vector1, *vector2); + vector1++; + vector2++; + } + + for (i = len4; i < length; i++) + { + sum += WEBRTC_SPL_MUL_16_16(*vector1, *vector2); + vector1++; + vector2++; + } + } + else + { + for (i = 0; i < len4; i = i + 4) + { + sum += WEBRTC_SPL_MUL_16_16_RSFT(*vector1, *vector2, scaling); + vector1++; + vector2++; + sum += WEBRTC_SPL_MUL_16_16_RSFT(*vector1, *vector2, scaling); + vector1++; + vector2++; + sum += WEBRTC_SPL_MUL_16_16_RSFT(*vector1, *vector2, scaling); + vector1++; + vector2++; + sum += WEBRTC_SPL_MUL_16_16_RSFT(*vector1, *vector2, scaling); + vector1++; + vector2++; + } + + for (i = len4; i < length; i++) + { + sum += WEBRTC_SPL_MUL_16_16_RSFT(*vector1, *vector2, scaling); + vector1++; + vector2++; + } + } +#endif + + return sum; +} diff --git a/src/mod/codecs/mod_iSAC/downsample_fast.c b/src/mod/codecs/mod_iSAC/downsample_fast.c new file mode 100644 index 0000000000..cce463c5d3 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/downsample_fast.c @@ -0,0 +1,59 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + + +/* + * This file contains the function WebRtcSpl_DownsampleFast(). + * The description header can be found in signal_processing_library.h + * + */ + +#include "signal_processing_library.h" + +int WebRtcSpl_DownsampleFast(WebRtc_Word16 *in_ptr, WebRtc_Word16 in_length, + WebRtc_Word16 *out_ptr, WebRtc_Word16 out_length, + WebRtc_Word16 *B, WebRtc_Word16 B_length, WebRtc_Word16 factor, + WebRtc_Word16 delay) +{ + WebRtc_Word32 o; + int i, j; + + WebRtc_Word16 *downsampled_ptr = out_ptr; + WebRtc_Word16 *b_ptr; + WebRtc_Word16 *x_ptr; + WebRtc_Word16 endpos = delay + + (WebRtc_Word16)WEBRTC_SPL_MUL_16_16(factor, (out_length - 1)) + 1; + + if (in_length < endpos) + { + return -1; + } + + for (i = delay; i < endpos; i += factor) + { + b_ptr = &B[0]; + x_ptr = &in_ptr[i]; + + o = (WebRtc_Word32)2048; // Round val + + for (j = 0; j < B_length; j++) + { + o += WEBRTC_SPL_MUL_16_16(*b_ptr++, *x_ptr--); + } + + o = WEBRTC_SPL_RSHIFT_W32(o, 12); + + // If output is higher than 32768, saturate it. Same with negative side + + *downsampled_ptr++ = WebRtcSpl_SatW32ToW16(o); + } + + return 0; +} diff --git a/src/mod/codecs/mod_iSAC/encode.c b/src/mod/codecs/mod_iSAC/encode.c new file mode 100644 index 0000000000..75cd726507 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/encode.c @@ -0,0 +1,1451 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * encode.c + * + * This file contains definition of funtions for encoding. + * Decoding of upper-band, including 8-12 kHz, when the bandwidth is + * 0-12 kHz, and 8-16 kHz, when the bandwidth is 0-16 kHz. + * + */ + +#include +#include + +#include "structs.h" +#include "codec.h" +#include "pitch_estimator.h" +#include "entropy_coding.h" +#include "arith_routines.h" +#include "pitch_gain_tables.h" +#include "pitch_lag_tables.h" +#include "spectrum_ar_model_tables.h" +#include "lpc_tables.h" +#include "lpc_analysis.h" +#include "bandwidth_estimator.h" +#include "lpc_shape_swb12_tables.h" +#include "lpc_shape_swb16_tables.h" +#include "lpc_gain_swb_tables.h" + + +#define UB_LOOKAHEAD 24 + +/* + Rate allocation tables of lower and upper-band bottleneck for + 12kHz & 16kHz bandwidth. + + 12 kHz bandwidth + ----------------- + The overall bottleneck of the coder is between 38 kbps and 45 kbps. We have + considered 7 enteries, uniformly distributed in this interval, i.e. 38, + 39.17, 40.33, 41.5, 42.67, 43.83 and 45. For every entery, the lower-band + and the upper-band bottlenecks are specified in + 'kLowerBandBitRate12' and 'kUpperBandBitRate12' + tables, respectively. E.g. the overall rate of 41.5 kbps corresponts to a + bottleneck of 31 kbps for lower-band and 27 kbps for upper-band. Given an + overall bottleneck of the codec, we use linear interpolation to get + lower-band and upper-band bottlenecks. + + 16 kHz bandwidth + ----------------- + The overall bottleneck of the coder is between 50 kbps and 56 kbps. We have + considered 7 enteries, uniformly distributed in this interval, i.e. 50, 51.2, + 52.4, 53.6, 54.8 and 56. For every entery, the lower-band and the upper-band + bottlenecks are specified in 'kLowerBandBitRate16' and + 'kUpperBandBitRate16' tables, respectively. E.g. the overall rate + of 53.6 kbps corresponts to a bottleneck of 32 kbps for lower-band and 30 + kbps for upper-band. Given an overall bottleneck of the codec, we use linear + interpolation to get lower-band and upper-band bottlenecks. + +*/ + +// 38 39.17 40.33 41.5 42.67 43.83 45 +static const WebRtc_Word16 kLowerBandBitRate12[7] = { + 29000, 30000, 30000, 31000, 31000, 32000, 32000}; +static const WebRtc_Word16 kUpperBandBitRate12[7] = { + 25000, 25000, 27000, 27000, 29000, 29000, 32000}; + +// 50 51.2 52.4 53.6 54.8 56 +static const WebRtc_Word16 kLowerBandBitRate16[6] = { + 31000, 31000, 32000, 32000, 32000, 32000}; +static const WebRtc_Word16 kUpperBandBitRate16[6] = { + 28000, 29000, 29000, 30000, 31000, 32000}; + +/****************************************************************************** + * WebRtcIsac_RateAllocation() + * Internal function to perform a rate-allocation for upper and lower-band, + * given a total rate. + * + * Input: + * - inRateBitPerSec : a total bottleneck in bits/sec. + * + * Output: + * - rateLBBitPerSec : a bottleneck allocated to the lower-band + * in bits/sec. + * - rateUBBitPerSec : a bottleneck allocated to the upper-band + * in bits/sec. + * + * Return value : 0 if rate allocation has been successful. + * -1 if failed to allocate rates. + */ + +WebRtc_Word16 +WebRtcIsac_RateAllocation( + WebRtc_Word32 inRateBitPerSec, + double* rateLBBitPerSec, + double* rateUBBitPerSec, + enum ISACBandwidth* bandwidthKHz) +{ + WebRtc_Word16 idx; + double idxD; + double idxErr; + if(inRateBitPerSec < 38000) + { + // If the given overall bottleneck is less than 38000 then + // then codec has to operate in wideband mode, i.e. 8 kHz + // bandwidth. + *rateLBBitPerSec = (WebRtc_Word16)((inRateBitPerSec > 32000)? + 32000:inRateBitPerSec); + *rateUBBitPerSec = 0; + *bandwidthKHz = isac8kHz; + } + else if((inRateBitPerSec >= 38000) && (inRateBitPerSec < 50000)) + { + // At a bottleneck between 38 and 50 kbps the codec is operating + // at 12 kHz bandwidth. Using xxxBandBitRate12[] to calculates + // upper/lower bottleneck + + // find the bottlenecks by linear interpolation + // step is (45000 - 38000)/6.0 we use the inverse of it. + const double stepSizeInv = 8.5714286e-4; + idxD = (inRateBitPerSec - 38000) * stepSizeInv; + idx = (idxD >= 6)? 6:((WebRtc_Word16)idxD); + idxErr = idxD - idx; + *rateLBBitPerSec = kLowerBandBitRate12[idx]; + *rateUBBitPerSec = kUpperBandBitRate12[idx]; + + if(idx < 6) + { + *rateLBBitPerSec += (WebRtc_Word16)(idxErr * + (kLowerBandBitRate12[idx + 1] - + kLowerBandBitRate12[idx])); + *rateUBBitPerSec += (WebRtc_Word16)(idxErr * + (kUpperBandBitRate12[idx + 1] - + kUpperBandBitRate12[idx])); + } + + *bandwidthKHz = isac12kHz; + } + else if((inRateBitPerSec >= 50000) && (inRateBitPerSec <= 56000)) + { + // A bottleneck between 50 and 56 kbps corresponds to bandwidth + // of 16 kHz. Using xxxBandBitRate16[] to calculates + // upper/lower bottleneck + + // find the bottlenecks by linear interpolation + // step is (56000 - 50000)/5 we use the inverse of it + const double stepSizeInv = 8.3333333e-4; + idxD = (inRateBitPerSec - 50000) * stepSizeInv; + idx = (idxD >= 5)? 5:((WebRtc_Word16)idxD); + idxErr = idxD - idx; + *rateLBBitPerSec = kLowerBandBitRate16[idx]; + *rateUBBitPerSec = kUpperBandBitRate16[idx]; + + if(idx < 5) + { + *rateLBBitPerSec += (WebRtc_Word16)(idxErr * + (kLowerBandBitRate16[idx + 1] - + kLowerBandBitRate16[idx])); + + *rateUBBitPerSec += (WebRtc_Word16)(idxErr * + (kUpperBandBitRate16[idx + 1] - + kUpperBandBitRate16[idx])); + } + + *bandwidthKHz = isac16kHz; + } + else + { + // Out-of-range botlteneck value. + return -1; + } + + // limit the values. + *rateLBBitPerSec = (*rateLBBitPerSec > 32000)? 32000:*rateLBBitPerSec; + *rateUBBitPerSec = (*rateUBBitPerSec > 32000)? 32000:*rateUBBitPerSec; + + return 0; +} + + + +int +WebRtcIsac_EncodeLb( + float* in, + ISACLBEncStruct* ISACencLB_obj, + WebRtc_Word16 codingMode, + WebRtc_Word16 bottleneckIndex) +{ + int stream_length = 0; + int err; + int k; + int iterCntr; + + double lofilt_coef[(ORDERLO+1)*SUBFRAMES]; + double hifilt_coef[(ORDERHI+1)*SUBFRAMES]; + float LP[FRAMESAMPLES_HALF]; + float HP[FRAMESAMPLES_HALF]; + + double LP_lookahead[FRAMESAMPLES_HALF]; + double HP_lookahead[FRAMESAMPLES_HALF]; + double LP_lookahead_pf[FRAMESAMPLES_HALF + QLOOKAHEAD]; + double LPw[FRAMESAMPLES_HALF]; + + double HPw[FRAMESAMPLES_HALF]; + double LPw_pf[FRAMESAMPLES_HALF]; + WebRtc_Word16 fre[FRAMESAMPLES_HALF]; /* Q7 */ + WebRtc_Word16 fim[FRAMESAMPLES_HALF]; /* Q7 */ + + double PitchLags[4]; + double PitchGains[4]; + WebRtc_Word16 PitchGains_Q12[4]; + WebRtc_Word16 AvgPitchGain_Q12; + + int frame_mode; /* 0 for 30ms, 1 for 60ms */ + int processed_samples, status = 0; + + double bits_gains; + int bmodel; + + transcode_obj transcodingParam; + double bytesLeftSpecCoding; + WebRtc_UWord16 payloadLimitBytes; + + /* copy new frame length and bottle neck rate only for the first + 10 ms data */ + if (ISACencLB_obj->buffer_index == 0) { + /* set the framelength for the next packet */ + ISACencLB_obj->current_framesamples = ISACencLB_obj->new_framelength; + } + /* frame_mode is 0 (30 ms) or 1 (60 ms) */ + frame_mode = ISACencLB_obj->current_framesamples/MAX_FRAMESAMPLES; + /* processed_samples: 480 (30, 60 ms) */ + processed_samples = ISACencLB_obj->current_framesamples/(frame_mode+1); + + /* buffer speech samples (by 10ms packet) until the framelength */ + /* is reached (30 or 60 ms) */ + /****************************************************************/ + + /* fill the buffer with 10ms input data */ + for (k = 0; k < FRAMESAMPLES_10ms; k++) { + ISACencLB_obj->data_buffer_float[k + ISACencLB_obj->buffer_index] = + in[k]; + } + + /* if buffersize is not equal to current framesize then increase index + and return. We do no encoding untill we have enough audio. */ + if (ISACencLB_obj->buffer_index + FRAMESAMPLES_10ms != processed_samples) { + ISACencLB_obj->buffer_index += FRAMESAMPLES_10ms; + return 0; + } + /* if buffer reached the right size, reset index and continue with + encoding the frame */ + ISACencLB_obj->buffer_index = 0; + + /* end of buffer function */ + /**************************/ + + /* encoding */ + /************/ + + if (frame_mode == 0 || ISACencLB_obj->frame_nb == 0 ) { + // This is to avoid Linux warnings until we change 'int' to 'Word32' + // at all places. + int intVar; + /* reset bitstream */ + ISACencLB_obj->bitstr_obj.W_upper = 0xFFFFFFFF; + ISACencLB_obj->bitstr_obj.streamval = 0; + ISACencLB_obj->bitstr_obj.stream_index = 0; + + if((codingMode == 0) && (frame_mode == 0) && + (ISACencLB_obj->enforceFrameSize == 0)) { + ISACencLB_obj->new_framelength = + WebRtcIsac_GetNewFrameLength(ISACencLB_obj->bottleneck, + ISACencLB_obj->current_framesamples); + } + + ISACencLB_obj->s2nr = WebRtcIsac_GetSnr( + ISACencLB_obj->bottleneck, ISACencLB_obj->current_framesamples); + + /* encode frame length */ + status = WebRtcIsac_EncodeFrameLen( + ISACencLB_obj->current_framesamples, &ISACencLB_obj->bitstr_obj); + if (status < 0) { + /* Wrong frame size */ + return status; + } + /* Save framelength for multiple packets memory */ + ISACencLB_obj->SaveEnc_obj.framelength = + ISACencLB_obj->current_framesamples; + + /* To be used for Redundant Coding */ + ISACencLB_obj->lastBWIdx = bottleneckIndex; + intVar = (int)bottleneckIndex; + WebRtcIsac_EncodeReceiveBw(&intVar, &ISACencLB_obj->bitstr_obj); + } + + /* split signal in two bands */ + WebRtcIsac_SplitAndFilterFloat(ISACencLB_obj->data_buffer_float, LP, HP, + LP_lookahead, HP_lookahead, &ISACencLB_obj->prefiltbankstr_obj ); + + /* estimate pitch parameters and pitch-filter lookahead signal */ + WebRtcIsac_PitchAnalysis(LP_lookahead, LP_lookahead_pf, + &ISACencLB_obj->pitchanalysisstr_obj, PitchLags, PitchGains); + + /* encode in FIX Q12 */ + + /* convert PitchGain to Fixed point */ + for (k=0;kframe_nb == 0) + { + ISACencLB_obj->SaveEnc_obj.startIdx = 0; + } else { + ISACencLB_obj->SaveEnc_obj.startIdx = 1; + } + + /* quantize & encode pitch parameters */ + WebRtcIsac_EncodePitchGain(PitchGains_Q12, &ISACencLB_obj->bitstr_obj, + &ISACencLB_obj->SaveEnc_obj); + WebRtcIsac_EncodePitchLag(PitchLags, PitchGains_Q12, + &ISACencLB_obj->bitstr_obj, &ISACencLB_obj->SaveEnc_obj); + + AvgPitchGain_Q12 = (PitchGains_Q12[0] + PitchGains_Q12[1] + + PitchGains_Q12[2] + PitchGains_Q12[3])>>2; + + /* find coefficients for perceptual pre-filters */ + WebRtcIsac_GetLpcCoefLb(LP_lookahead_pf, HP_lookahead, + &ISACencLB_obj->maskfiltstr_obj, ISACencLB_obj->s2nr, + PitchGains_Q12, lofilt_coef, hifilt_coef); + + /* code LPC model and shape - gains not quantized yet */ + WebRtcIsac_EncodeLpcLb(lofilt_coef, hifilt_coef, &bmodel, &bits_gains, + &ISACencLB_obj->bitstr_obj, &ISACencLB_obj->SaveEnc_obj); + + /* convert PitchGains back to FLOAT for pitchfilter_pre */ + for (k = 0; k < 4; k++) { + PitchGains[k] = ((float)PitchGains_Q12[k])/4096; + } + + /* Store the state of arithmetic coder before coding LPC gains */ + transcodingParam.W_upper = ISACencLB_obj->bitstr_obj.W_upper; + transcodingParam.stream_index = ISACencLB_obj->bitstr_obj.stream_index; + transcodingParam.streamval = ISACencLB_obj->bitstr_obj.streamval; + transcodingParam.stream[0] = ISACencLB_obj->bitstr_obj.stream[ + ISACencLB_obj->bitstr_obj.stream_index - 2]; + transcodingParam.stream[1] = ISACencLB_obj->bitstr_obj.stream[ + ISACencLB_obj->bitstr_obj.stream_index - 1]; + transcodingParam.stream[2] = ISACencLB_obj->bitstr_obj.stream[ + ISACencLB_obj->bitstr_obj.stream_index]; + + /* Store LPC Gains before encoding them */ + for(k = 0; k < SUBFRAMES; k++) { + transcodingParam.loFiltGain[k] = lofilt_coef[(LPC_LOBAND_ORDER+1)*k]; + transcodingParam.hiFiltGain[k] = hifilt_coef[(LPC_HIBAND_ORDER+1)*k]; + } + + /* Code gains */ + WebRtcIsac_EncodeLpcGainLb(lofilt_coef, hifilt_coef, bmodel, + &ISACencLB_obj->bitstr_obj, &ISACencLB_obj->SaveEnc_obj); + + /* Get the correct value for the payload limit and calculate the + number of bytes left for coding the spectrum.*/ + if((frame_mode == 1) && (ISACencLB_obj->frame_nb == 0)) { + /* It is a 60ms and we are in the first 30ms then the limit at + this point should be half of the assigned value */ + payloadLimitBytes = ISACencLB_obj->payloadLimitBytes60 >> 1; + } + else if (frame_mode == 0) { + /* It is a 30ms frame */ + /* Subract 3 because termination process may add 3 bytes */ + payloadLimitBytes = ISACencLB_obj->payloadLimitBytes30 - 3; + } else { + /* This is the second half of a 60ms frame. */ + /* Subract 3 because termination process may add 3 bytes */ + payloadLimitBytes = ISACencLB_obj->payloadLimitBytes60 - 3; + } + bytesLeftSpecCoding = payloadLimitBytes - transcodingParam.stream_index; + + /* perceptual pre-filtering (using normalized lattice filter) */ + /* low-band filtering */ + WebRtcIsac_NormLatticeFilterMa(ORDERLO, + ISACencLB_obj->maskfiltstr_obj.PreStateLoF, + ISACencLB_obj->maskfiltstr_obj.PreStateLoG, LP, lofilt_coef, LPw); + /* high-band filtering */ + WebRtcIsac_NormLatticeFilterMa(ORDERHI, + ISACencLB_obj->maskfiltstr_obj.PreStateHiF, + ISACencLB_obj->maskfiltstr_obj.PreStateHiG, HP, hifilt_coef, HPw); + + + /* pitch filter */ + WebRtcIsac_PitchfilterPre(LPw, LPw_pf, &ISACencLB_obj->pitchfiltstr_obj, + PitchLags, PitchGains); + + /* transform */ + WebRtcIsac_Time2Spec(LPw_pf, HPw, fre, fim, &ISACencLB_obj->fftstr_obj); + + + /* Save data for multiple packets memory */ + for (k = 0; k < FRAMESAMPLES_HALF; k++) { + ISACencLB_obj->SaveEnc_obj.fre[k + + ISACencLB_obj->SaveEnc_obj.startIdx*FRAMESAMPLES_HALF] = fre[k]; + ISACencLB_obj->SaveEnc_obj.fim[k + + ISACencLB_obj->SaveEnc_obj.startIdx*FRAMESAMPLES_HALF] = fim[k]; + } + ISACencLB_obj->SaveEnc_obj.AvgPitchGain[ + ISACencLB_obj->SaveEnc_obj.startIdx] = AvgPitchGain_Q12; + + /* quantization and lossless coding */ + err = WebRtcIsac_EncodeSpecLb(fre, fim, &ISACencLB_obj->bitstr_obj, + AvgPitchGain_Q12); + if ((err < 0) && (err != -ISAC_DISALLOWED_BITSTREAM_LENGTH)) { + /* There has been an error but it was not too large payload + (we can cure too large payload) */ + if (frame_mode == 1 && ISACencLB_obj->frame_nb == 1) { + /* If this is the second 30ms of a 60ms frame reset + this such that in the next call encoder starts fresh. */ + ISACencLB_obj->frame_nb = 0; + } + return err; + } + iterCntr = 0; + while((ISACencLB_obj->bitstr_obj.stream_index > payloadLimitBytes) || + (err == -ISAC_DISALLOWED_BITSTREAM_LENGTH)) { + double bytesSpecCoderUsed; + double transcodeScale; + + if(iterCntr >= MAX_PAYLOAD_LIMIT_ITERATION) { + /* We were not able to limit the payload size */ + if((frame_mode == 1) && (ISACencLB_obj->frame_nb == 0)) { + /* This was the first 30ms of a 60ms frame. Although + the payload is larger than it should be but we let + the second 30ms be encoded. Maybe together we + won't exceed the limit. */ + ISACencLB_obj->frame_nb = 1; + return 0; + } else if((frame_mode == 1) && (ISACencLB_obj->frame_nb == 1)) { + ISACencLB_obj->frame_nb = 0; + } + + if(err != -ISAC_DISALLOWED_BITSTREAM_LENGTH) { + return -ISAC_PAYLOAD_LARGER_THAN_LIMIT; + } else { + return status; + } + } + + if(err == -ISAC_DISALLOWED_BITSTREAM_LENGTH) { + bytesSpecCoderUsed = STREAM_SIZE_MAX; + // being coservative + transcodeScale = bytesLeftSpecCoding / bytesSpecCoderUsed * 0.5; + } else { + bytesSpecCoderUsed = ISACencLB_obj->bitstr_obj.stream_index - + transcodingParam.stream_index; + transcodeScale = bytesLeftSpecCoding / bytesSpecCoderUsed; + } + + /* To be safe, we reduce the scale depending on + the number of iterations. */ + transcodeScale *= (1.0 - (0.9 * (double)iterCntr / + (double)MAX_PAYLOAD_LIMIT_ITERATION)); + + /* Scale the LPC Gains */ + for (k = 0; k < SUBFRAMES; k++) { + lofilt_coef[(LPC_LOBAND_ORDER+1) * k] = + transcodingParam.loFiltGain[k] * transcodeScale; + hifilt_coef[(LPC_HIBAND_ORDER+1) * k] = + transcodingParam.hiFiltGain[k] * transcodeScale; + transcodingParam.loFiltGain[k] = + lofilt_coef[(LPC_LOBAND_ORDER+1) * k]; + transcodingParam.hiFiltGain[k] = + hifilt_coef[(LPC_HIBAND_ORDER+1) * k]; + } + + /* Scale DFT coefficients */ + for (k = 0; k < FRAMESAMPLES_HALF; k++) { + fre[k] = (WebRtc_Word16)(fre[k] * transcodeScale); + fim[k] = (WebRtc_Word16)(fim[k] * transcodeScale); + } + + /* Save data for multiple packets memory */ + for (k = 0; k < FRAMESAMPLES_HALF; k++) { + ISACencLB_obj->SaveEnc_obj.fre[k + + ISACencLB_obj->SaveEnc_obj.startIdx * FRAMESAMPLES_HALF] = + fre[k]; + ISACencLB_obj->SaveEnc_obj.fim[k + + ISACencLB_obj->SaveEnc_obj.startIdx * FRAMESAMPLES_HALF] = + fim[k]; + } + + /* Re-store the state of arithmetic coder before coding LPC gains */ + ISACencLB_obj->bitstr_obj.W_upper = transcodingParam.W_upper; + ISACencLB_obj->bitstr_obj.stream_index = transcodingParam.stream_index; + ISACencLB_obj->bitstr_obj.streamval = transcodingParam.streamval; + ISACencLB_obj->bitstr_obj.stream[transcodingParam.stream_index - 2] = + transcodingParam.stream[0]; + ISACencLB_obj->bitstr_obj.stream[transcodingParam.stream_index - 1] = + transcodingParam.stream[1]; + ISACencLB_obj->bitstr_obj.stream[transcodingParam.stream_index] = + transcodingParam.stream[2]; + + /* Code gains */ + WebRtcIsac_EncodeLpcGainLb(lofilt_coef, hifilt_coef, bmodel, + &ISACencLB_obj->bitstr_obj, &ISACencLB_obj->SaveEnc_obj); + + /* Update the number of bytes left for encoding the spectrum */ + bytesLeftSpecCoding = payloadLimitBytes - + transcodingParam.stream_index; + + /* Encode the spectrum */ + err = WebRtcIsac_EncodeSpecLb(fre, fim, &ISACencLB_obj->bitstr_obj, + AvgPitchGain_Q12); + if((err < 0) && (err != -ISAC_DISALLOWED_BITSTREAM_LENGTH)) { + /* There has been an error but it was not too large + payload (we can cure too large payload) */ + if (frame_mode == 1 && ISACencLB_obj->frame_nb == 1) { + /* If this is the second 30ms of a 60ms frame reset + this such that in the next call encoder starts fresh. */ + ISACencLB_obj->frame_nb = 0; + } + return err; + } + iterCntr++; + } + + /* i.e. 60 ms framesize and just processed the first 30ms, */ + /* go back to main function to buffer the other 30ms speech frame */ + if (frame_mode == 1) + { + if(ISACencLB_obj->frame_nb == 0) + { + ISACencLB_obj->frame_nb = 1; + return 0; + } + else if(ISACencLB_obj->frame_nb == 1) + { + ISACencLB_obj->frame_nb = 0; + /* also update the framelength for next packet, + in Adaptive mode only */ + if (codingMode == 0 && (ISACencLB_obj->enforceFrameSize == 0)) + { + ISACencLB_obj->new_framelength = + WebRtcIsac_GetNewFrameLength(ISACencLB_obj->bottleneck, + ISACencLB_obj->current_framesamples); + } + } + } + else + { + ISACencLB_obj->frame_nb = 0; + } + + /* complete arithmetic coding */ + stream_length = WebRtcIsac_EncTerminate(&ISACencLB_obj->bitstr_obj); + + return stream_length; +} + +int +WebRtcIsac_EncodeUb16( + float* in, + ISACUBEncStruct* ISACencUB_obj, + WebRtc_Word32 jitterInfo) +{ + int err; + int k; + + double lpcVecs[UB_LPC_ORDER * UB16_LPC_VEC_PER_FRAME]; + double percepFilterParams[(1 + UB_LPC_ORDER) * (SUBFRAMES<<1) + + (1 + UB_LPC_ORDER)]; + + double LP_lookahead[FRAMESAMPLES]; + WebRtc_Word16 fre[FRAMESAMPLES_HALF]; /* Q7 */ + WebRtc_Word16 fim[FRAMESAMPLES_HALF]; /* Q7 */ + + int status = 0; + + double varscale[2]; + double corr[SUBFRAMES<<1][UB_LPC_ORDER + 1]; + double lpcGains[SUBFRAMES<<1]; + transcode_obj transcodingParam; + double bytesLeftSpecCoding; + WebRtc_UWord16 payloadLimitBytes; + WebRtc_UWord16 iterCntr; + double s2nr; + + /* buffer speech samples (by 10ms packet) until the framelength is */ + /* reached (30 or 60 ms) */ + /*********************************************************************/ + + /* fill the buffer with 10ms input data */ + for (k = 0; k < FRAMESAMPLES_10ms; k++) { + ISACencUB_obj->data_buffer_float[k + ISACencUB_obj->buffer_index] = + in[k]; + } + + /* if buffersize is not equal to current framesize, and end of file is + not reached yet, we don't do encoding unless we have the whole frame */ + if (ISACencUB_obj->buffer_index + FRAMESAMPLES_10ms < FRAMESAMPLES) { + ISACencUB_obj->buffer_index += FRAMESAMPLES_10ms; + return 0; + } + + /* end of buffer function */ + /**************************/ + + /* encoding */ + /************/ + + /* reset bitstream */ + ISACencUB_obj->bitstr_obj.W_upper = 0xFFFFFFFF; + ISACencUB_obj->bitstr_obj.streamval = 0; + ISACencUB_obj->bitstr_obj.stream_index = 0; + + /* bandwidth estimation and coding */ + /* To be used for Redundant Coding */ + WebRtcIsac_EncodeJitterInfo(jitterInfo, &ISACencUB_obj->bitstr_obj); + + status = WebRtcIsac_EncodeBandwidth(isac16kHz, + &ISACencUB_obj->bitstr_obj); + if (status < 0) { + return status; + } + + s2nr = WebRtcIsac_GetSnr(ISACencUB_obj->bottleneck, + FRAMESAMPLES); + + memcpy(lpcVecs, ISACencUB_obj->lastLPCVec, UB_LPC_ORDER * sizeof(double)); + + for (k = 0; k < FRAMESAMPLES; k++) { + LP_lookahead[k] = ISACencUB_obj->data_buffer_float[UB_LOOKAHEAD + k]; + } + + /* find coefficients for perceptual pre-filters */ + WebRtcIsac_GetLpcCoefUb(LP_lookahead, &ISACencUB_obj->maskfiltstr_obj, + &lpcVecs[UB_LPC_ORDER], corr, varscale, isac16kHz); + + memcpy(ISACencUB_obj->lastLPCVec, + &lpcVecs[(UB16_LPC_VEC_PER_FRAME - 1) * (UB_LPC_ORDER)], + sizeof(double) * UB_LPC_ORDER); + + /* code LPC model and shape - gains not quantized yet */ + WebRtcIsac_EncodeLpcUB(lpcVecs, &ISACencUB_obj->bitstr_obj, + percepFilterParams, isac16kHz, &ISACencUB_obj->SaveEnc_obj); + + + // the first set of lpc parameters are from the last sub-frame of + // the previous frame. so we don't care about them + WebRtcIsac_GetLpcGain(s2nr, &percepFilterParams[UB_LPC_ORDER + 1], + (SUBFRAMES<<1), lpcGains, corr, varscale); + + /* Store the state of arithmetic coder before coding LPC gains */ + transcodingParam.stream_index = ISACencUB_obj->bitstr_obj.stream_index; + transcodingParam.W_upper = ISACencUB_obj->bitstr_obj.W_upper; + transcodingParam.streamval = ISACencUB_obj->bitstr_obj.streamval; + transcodingParam.stream[0] = ISACencUB_obj->bitstr_obj.stream[ + ISACencUB_obj->bitstr_obj.stream_index - 2]; + transcodingParam.stream[1] = ISACencUB_obj->bitstr_obj.stream[ + ISACencUB_obj->bitstr_obj.stream_index - 1]; + transcodingParam.stream[2] = ISACencUB_obj->bitstr_obj.stream[ + ISACencUB_obj->bitstr_obj.stream_index]; + + /* Store LPC Gains before encoding them */ + for(k = 0; k < SUBFRAMES; k++) { + transcodingParam.loFiltGain[k] = lpcGains[k]; + transcodingParam.hiFiltGain[k] = lpcGains[SUBFRAMES + k]; + } + + // Store the gains for multiple encoding + memcpy(ISACencUB_obj->SaveEnc_obj.lpcGain, lpcGains, (SUBFRAMES << 1) * sizeof(double)); + + WebRtcIsac_EncodeLpcGainUb(lpcGains, &ISACencUB_obj->bitstr_obj, + ISACencUB_obj->SaveEnc_obj.lpcGainIndex); + WebRtcIsac_EncodeLpcGainUb(&lpcGains[SUBFRAMES], &ISACencUB_obj->bitstr_obj, + &ISACencUB_obj->SaveEnc_obj.lpcGainIndex[SUBFRAMES]); + + /* Get the correct value for the payload limit and calculate the number of + bytes left for coding the spectrum. It is a 30ms frame + Subract 3 because termination process may add 3 bytes */ + payloadLimitBytes = ISACencUB_obj->maxPayloadSizeBytes - + ISACencUB_obj->numBytesUsed - 3; + bytesLeftSpecCoding = payloadLimitBytes - + ISACencUB_obj->bitstr_obj.stream_index; + + for (k = 0; k < (SUBFRAMES<<1); k++) { + percepFilterParams[k*(UB_LPC_ORDER + 1) + (UB_LPC_ORDER + 1)] = + lpcGains[k]; + } + + /* perceptual pre-filtering (using normalized lattice filter) */ + /* first half-frame filtering */ + WebRtcIsac_NormLatticeFilterMa(UB_LPC_ORDER, + ISACencUB_obj->maskfiltstr_obj.PreStateLoF, + ISACencUB_obj->maskfiltstr_obj.PreStateLoG, + &ISACencUB_obj->data_buffer_float[0], + &percepFilterParams[UB_LPC_ORDER + 1], + &LP_lookahead[0]); + + /* Second half-frame filtering */ + WebRtcIsac_NormLatticeFilterMa(UB_LPC_ORDER, + ISACencUB_obj->maskfiltstr_obj.PreStateLoF, + ISACencUB_obj->maskfiltstr_obj.PreStateLoG, + &ISACencUB_obj->data_buffer_float[FRAMESAMPLES_HALF], + &percepFilterParams[(UB_LPC_ORDER + 1) + SUBFRAMES * + (UB_LPC_ORDER + 1)], &LP_lookahead[FRAMESAMPLES_HALF]); + + WebRtcIsac_Time2Spec(&LP_lookahead[0], &LP_lookahead[FRAMESAMPLES_HALF], + fre, fim, &ISACencUB_obj->fftstr_obj); + + //Store FFT coefficients for multiple encoding + memcpy(&ISACencUB_obj->SaveEnc_obj.realFFT, fre, + FRAMESAMPLES_HALF * sizeof(WebRtc_Word16)); + + memcpy(&ISACencUB_obj->SaveEnc_obj.imagFFT, fim, + FRAMESAMPLES_HALF * sizeof(WebRtc_Word16)); + + // Prepare the audio buffer for the next packet + // move the last 3 ms to the beginning of the buffer + memcpy(ISACencUB_obj->data_buffer_float, + &ISACencUB_obj->data_buffer_float[FRAMESAMPLES], + LB_TOTAL_DELAY_SAMPLES * sizeof(float)); + // start writing with 3 ms delay to compensate for the delay + // of the lower-band. + ISACencUB_obj->buffer_index = LB_TOTAL_DELAY_SAMPLES; + + // Save the bit-stream object at this point for FEC. + memcpy(&ISACencUB_obj->SaveEnc_obj.bitStreamObj, + &ISACencUB_obj->bitstr_obj, sizeof(Bitstr)); + + /* quantization and lossless coding */ + err = WebRtcIsac_EncodeSpecUB16(fre, fim, &ISACencUB_obj->bitstr_obj); + if ((err < 0) && (err != -ISAC_DISALLOWED_BITSTREAM_LENGTH)) { + return err; + } + + iterCntr = 0; + while((ISACencUB_obj->bitstr_obj.stream_index > payloadLimitBytes) || + (err == -ISAC_DISALLOWED_BITSTREAM_LENGTH)) { + double bytesSpecCoderUsed; + double transcodeScale; + + if (iterCntr >= MAX_PAYLOAD_LIMIT_ITERATION) { + /* We were not able to limit the payload size */ + return -ISAC_PAYLOAD_LARGER_THAN_LIMIT; + } + + if (err == -ISAC_DISALLOWED_BITSTREAM_LENGTH) { + bytesSpecCoderUsed = STREAM_SIZE_MAX; + // being conservative + transcodeScale = bytesLeftSpecCoding / bytesSpecCoderUsed * 0.5; + } else { + bytesSpecCoderUsed = ISACencUB_obj->bitstr_obj.stream_index - + transcodingParam.stream_index; + transcodeScale = bytesLeftSpecCoding / bytesSpecCoderUsed; + } + + /* To be safe, we reduce the scale depending on the + number of iterations. */ + transcodeScale *= (1.0 - (0.9 * (double)iterCntr/ + (double)MAX_PAYLOAD_LIMIT_ITERATION)); + + /* Scale the LPC Gains */ + for (k = 0; k < SUBFRAMES; k++) { + transcodingParam.loFiltGain[k] *= transcodeScale; + transcodingParam.hiFiltGain[k] *= transcodeScale; + } + + /* Scale DFT coefficients */ + for (k = 0; k < FRAMESAMPLES_HALF; k++) { + fre[k] = (WebRtc_Word16)(fre[k] * transcodeScale + 0.5); + fim[k] = (WebRtc_Word16)(fim[k] * transcodeScale + 0.5); + } + + //Store FFT coefficients for multiple encoding + memcpy(&ISACencUB_obj->SaveEnc_obj.realFFT, fre, + FRAMESAMPLES_HALF * sizeof(WebRtc_Word16)); + + memcpy(&ISACencUB_obj->SaveEnc_obj.imagFFT, fim, + FRAMESAMPLES_HALF * sizeof(WebRtc_Word16)); + + + /* Store the state of arithmetic coder before coding LPC gains */ + ISACencUB_obj->bitstr_obj.W_upper = transcodingParam.W_upper; + + ISACencUB_obj->bitstr_obj.stream_index = transcodingParam.stream_index; + + ISACencUB_obj->bitstr_obj.streamval = transcodingParam.streamval; + + ISACencUB_obj->bitstr_obj.stream[transcodingParam.stream_index - 2] = + transcodingParam.stream[0]; + + ISACencUB_obj->bitstr_obj.stream[transcodingParam.stream_index - 1] = + transcodingParam.stream[1]; + + ISACencUB_obj->bitstr_obj.stream[transcodingParam.stream_index] = + transcodingParam.stream[2]; + + // Store the gains for multiple encoding + memcpy(ISACencUB_obj->SaveEnc_obj.lpcGain, lpcGains, + (SUBFRAMES << 1) * sizeof(double)); + + WebRtcIsac_EncodeLpcGainUb(transcodingParam.loFiltGain, + &ISACencUB_obj->bitstr_obj, + ISACencUB_obj->SaveEnc_obj.lpcGainIndex); + WebRtcIsac_EncodeLpcGainUb(transcodingParam.hiFiltGain, + &ISACencUB_obj->bitstr_obj, + &ISACencUB_obj->SaveEnc_obj.lpcGainIndex[SUBFRAMES]); + + /* Update the number of bytes left for encoding the spectrum */ + bytesLeftSpecCoding = payloadLimitBytes - + ISACencUB_obj->bitstr_obj.stream_index; + + // Save the bit-stream object at this point for FEC. + memcpy(&ISACencUB_obj->SaveEnc_obj.bitStreamObj, + &ISACencUB_obj->bitstr_obj, sizeof(Bitstr)); + + /* Encode the spectrum */ + err = WebRtcIsac_EncodeSpecUB16(fre, fim, &ISACencUB_obj->bitstr_obj); + if ((err < 0) && (err != -ISAC_DISALLOWED_BITSTREAM_LENGTH)) { + /* There has been an error but it was not too large payload + (we can cure too large payload) */ + return err; + } + iterCntr++; + } + + /* complete arithmetic coding */ + return WebRtcIsac_EncTerminate(&ISACencUB_obj->bitstr_obj); +} + + +int +WebRtcIsac_EncodeUb12( + float* in, + ISACUBEncStruct* ISACencUB_obj, + WebRtc_Word32 jitterInfo) +{ + int err; + int k; + int iterCntr; + + double lpcVecs[UB_LPC_ORDER * UB_LPC_VEC_PER_FRAME]; + + double percepFilterParams[(1 + UB_LPC_ORDER) * SUBFRAMES]; + float LP[FRAMESAMPLES_HALF]; + float HP[FRAMESAMPLES_HALF]; + + double LP_lookahead[FRAMESAMPLES_HALF]; + double HP_lookahead[FRAMESAMPLES_HALF]; + double LPw[FRAMESAMPLES_HALF]; + + double HPw[FRAMESAMPLES_HALF]; + WebRtc_Word16 fre[FRAMESAMPLES_HALF]; /* Q7 */ + WebRtc_Word16 fim[FRAMESAMPLES_HALF]; /* Q7 */ + + int status = 0; + + double varscale[1]; + + double corr[UB_LPC_GAIN_DIM][UB_LPC_ORDER + 1]; + double lpcGains[SUBFRAMES]; + transcode_obj transcodingParam; + double bytesLeftSpecCoding; + WebRtc_UWord16 payloadLimitBytes; + double s2nr; + + /* buffer speech samples (by 10ms packet) until the framelength is */ + /* reached (30 or 60 ms) */ + /********************************************************************/ + + /* fill the buffer with 10ms input data */ + for (k=0; kdata_buffer_float[k + ISACencUB_obj->buffer_index] = + in[k]; + } + + /* if buffer-size is not equal to current frame-size then increase the + index and return. We do the encoding when we have enough audio. */ + if (ISACencUB_obj->buffer_index + FRAMESAMPLES_10ms < FRAMESAMPLES) { + ISACencUB_obj->buffer_index += FRAMESAMPLES_10ms; + return 0; + } + /* if buffer reached the right size, reset index and continue + with encoding the frame */ + ISACencUB_obj->buffer_index = 0; + + /* end of buffer function */ + /**************************/ + + /* encoding */ + /************/ + + /* reset bitstream */ + ISACencUB_obj->bitstr_obj.W_upper = 0xFFFFFFFF; + ISACencUB_obj->bitstr_obj.streamval = 0; + ISACencUB_obj->bitstr_obj.stream_index = 0; + + /* bandwidth estimation and coding */ + /* To be used for Redundant Coding */ + WebRtcIsac_EncodeJitterInfo(jitterInfo, &ISACencUB_obj->bitstr_obj); + + status = WebRtcIsac_EncodeBandwidth(isac12kHz, + &ISACencUB_obj->bitstr_obj); + if (status < 0) { + return status; + } + + + s2nr = WebRtcIsac_GetSnr(ISACencUB_obj->bottleneck, + FRAMESAMPLES); + + /* split signal in two bands */ + WebRtcIsac_SplitAndFilterFloat(ISACencUB_obj->data_buffer_float, HP, LP, + HP_lookahead, LP_lookahead, &ISACencUB_obj->prefiltbankstr_obj); + + /* find coefficients for perceptual pre-filters */ + WebRtcIsac_GetLpcCoefUb(LP_lookahead, &ISACencUB_obj->maskfiltstr_obj, + lpcVecs, corr, varscale, isac12kHz); + + /* code LPC model and shape - gains not quantized yet */ + WebRtcIsac_EncodeLpcUB(lpcVecs, &ISACencUB_obj->bitstr_obj, + percepFilterParams, isac12kHz, &ISACencUB_obj->SaveEnc_obj); + + WebRtcIsac_GetLpcGain(s2nr, percepFilterParams, SUBFRAMES, lpcGains, + corr, varscale); + + /* Store the state of arithmetic coder before coding LPC gains */ + transcodingParam.W_upper = ISACencUB_obj->bitstr_obj.W_upper; + + transcodingParam.stream_index = ISACencUB_obj->bitstr_obj.stream_index; + + transcodingParam.streamval = ISACencUB_obj->bitstr_obj.streamval; + + transcodingParam.stream[0] = ISACencUB_obj->bitstr_obj.stream[ + ISACencUB_obj->bitstr_obj.stream_index - 2]; + + transcodingParam.stream[1] = ISACencUB_obj->bitstr_obj.stream[ + ISACencUB_obj->bitstr_obj.stream_index - 1]; + + transcodingParam.stream[2] = ISACencUB_obj->bitstr_obj.stream[ + ISACencUB_obj->bitstr_obj.stream_index]; + + /* Store LPC Gains before encoding them */ + for(k = 0; k < SUBFRAMES; k++) { + transcodingParam.loFiltGain[k] = lpcGains[k]; + } + + // Store the gains for multiple encoding + memcpy(ISACencUB_obj->SaveEnc_obj.lpcGain, lpcGains, SUBFRAMES * + sizeof(double)); + + WebRtcIsac_EncodeLpcGainUb(lpcGains, &ISACencUB_obj->bitstr_obj, + ISACencUB_obj->SaveEnc_obj.lpcGainIndex); + + for(k = 0; k < SUBFRAMES; k++) { + percepFilterParams[k*(UB_LPC_ORDER + 1)] = lpcGains[k]; + } + + /* perceptual pre-filtering (using normalized lattice filter) */ + /* low-band filtering */ + WebRtcIsac_NormLatticeFilterMa(UB_LPC_ORDER, + ISACencUB_obj->maskfiltstr_obj.PreStateLoF, + ISACencUB_obj->maskfiltstr_obj.PreStateLoG, LP, percepFilterParams, + LPw); + + /* Get the correct value for the payload limit and calculate the number + of bytes left for coding the spectrum. It is a 30ms frame Subract 3 + because termination process may add 3 bytes */ + payloadLimitBytes = ISACencUB_obj->maxPayloadSizeBytes - + ISACencUB_obj->numBytesUsed - 3; + bytesLeftSpecCoding = payloadLimitBytes - + ISACencUB_obj->bitstr_obj.stream_index; + + memset(HPw, 0, sizeof(double) * FRAMESAMPLES_HALF); + + /* transform */ + WebRtcIsac_Time2Spec(LPw, HPw, fre, fim, &ISACencUB_obj->fftstr_obj); + + //Store real FFT coefficients for multiple encoding + memcpy(&ISACencUB_obj->SaveEnc_obj.realFFT, fre, + FRAMESAMPLES_HALF * sizeof(WebRtc_Word16)); + + //Store imaginary FFT coefficients for multiple encoding + memcpy(&ISACencUB_obj->SaveEnc_obj.imagFFT, fim, + FRAMESAMPLES_HALF * sizeof(WebRtc_Word16)); + + // Save the bit-stream object at this point for FEC. + memcpy(&ISACencUB_obj->SaveEnc_obj.bitStreamObj, + &ISACencUB_obj->bitstr_obj, sizeof(Bitstr)); + + /* quantization and lossless coding */ + err = WebRtcIsac_EncodeSpecUB12(fre, fim, &ISACencUB_obj->bitstr_obj); + if ((err < 0) && (err != -ISAC_DISALLOWED_BITSTREAM_LENGTH)) { + /* There has been an error but it was not too large + payload (we can cure too large payload) */ + return err; + } + iterCntr = 0; + while((ISACencUB_obj->bitstr_obj.stream_index > payloadLimitBytes) || + (err == -ISAC_DISALLOWED_BITSTREAM_LENGTH)) { + double bytesSpecCoderUsed; + double transcodeScale; + + if (iterCntr >= MAX_PAYLOAD_LIMIT_ITERATION) { + /* We were not able to limit the payload size */ + return -ISAC_PAYLOAD_LARGER_THAN_LIMIT; + } + + if (err == -ISAC_DISALLOWED_BITSTREAM_LENGTH) { + bytesSpecCoderUsed = STREAM_SIZE_MAX; + // being coservative + transcodeScale = bytesLeftSpecCoding / bytesSpecCoderUsed * 0.5; + } else { + bytesSpecCoderUsed = ISACencUB_obj->bitstr_obj.stream_index - + transcodingParam.stream_index; + transcodeScale = bytesLeftSpecCoding / bytesSpecCoderUsed; + } + + /* To be safe, we reduce the scale depending on the + number of iterations. */ + transcodeScale *= (1.0 - (0.9 * (double)iterCntr/ + (double)MAX_PAYLOAD_LIMIT_ITERATION)); + + /* Scale the LPC Gains */ + for (k = 0; k < SUBFRAMES; k++) { + transcodingParam.loFiltGain[k] *= transcodeScale; + } + + /* Scale DFT coefficients */ + for (k = 0; k < FRAMESAMPLES_HALF; k++) { + fre[k] = (WebRtc_Word16)(fre[k] * transcodeScale + 0.5); + fim[k] = (WebRtc_Word16)(fim[k] * transcodeScale + 0.5); + } + + //Store real FFT coefficients for multiple encoding + memcpy(&ISACencUB_obj->SaveEnc_obj.realFFT, fre, + FRAMESAMPLES_HALF * sizeof(WebRtc_Word16)); + + //Store imaginary FFT coefficients for multiple encoding + memcpy(&ISACencUB_obj->SaveEnc_obj.imagFFT, fim, + FRAMESAMPLES_HALF * sizeof(WebRtc_Word16)); + + + /* Re-store the state of arithmetic coder before coding LPC gains */ + ISACencUB_obj->bitstr_obj.W_upper = transcodingParam.W_upper; + + ISACencUB_obj->bitstr_obj.stream_index = transcodingParam.stream_index; + + ISACencUB_obj->bitstr_obj.streamval = transcodingParam.streamval; + + ISACencUB_obj->bitstr_obj.stream[transcodingParam.stream_index - 2] = + transcodingParam.stream[0]; + + ISACencUB_obj->bitstr_obj.stream[transcodingParam.stream_index - 1] = + transcodingParam.stream[1]; + + ISACencUB_obj->bitstr_obj.stream[transcodingParam.stream_index] = + transcodingParam.stream[2]; + + // Store the gains for multiple encoding + memcpy(&ISACencUB_obj->SaveEnc_obj.lpcGain, lpcGains, SUBFRAMES * + sizeof(double)); + + // encode LPC gain and store quantization indices. HAving quantization + // indices reduces transcoding complexity if 'scale factor' is 1. + WebRtcIsac_EncodeLpcGainUb(transcodingParam.loFiltGain, + &ISACencUB_obj->bitstr_obj, + ISACencUB_obj->SaveEnc_obj.lpcGainIndex); + + // Save the bit-stream object at this point for FEC. + memcpy(&ISACencUB_obj->SaveEnc_obj.bitStreamObj, + &ISACencUB_obj->bitstr_obj, sizeof(Bitstr)); + + /* Update the number of bytes left for encoding the spectrum */ + bytesLeftSpecCoding = payloadLimitBytes - + ISACencUB_obj->bitstr_obj.stream_index; + + /* Encode the spectrum */ + err = WebRtcIsac_EncodeSpecUB12(fre, fim, + &ISACencUB_obj->bitstr_obj); + if ((err < 0) && (err != -ISAC_DISALLOWED_BITSTREAM_LENGTH)) { + /* There has been an error but it was not too large payload + (we can cure too large payload) */ + return err; + } + iterCntr++; + } + + /* complete arithmetic coding */ + return WebRtcIsac_EncTerminate(&ISACencUB_obj->bitstr_obj); +} + + + + + + +/* This function is used to create a new bitstream with new BWE. + The same data as previously encoded with the function WebRtcIsac_Encoder(). + The data needed is taken from the struct, where it was stored + when calling the encoder. */ + +int WebRtcIsac_EncodeStoredDataLb( + const ISAC_SaveEncData_t* ISACSavedEnc_obj, + Bitstr* ISACBitStr_obj, + int BWnumber, + float scale) +{ + int ii; + int status; + int BWno = BWnumber; + + const WebRtc_UWord16 *WebRtcIsac_kQPitchGainCdf_ptr[1]; + const WebRtc_UWord16 **cdf; + + double tmpLPCcoeffs_lo[(ORDERLO+1)*SUBFRAMES*2]; + double tmpLPCcoeffs_hi[(ORDERHI+1)*SUBFRAMES*2]; + int tmpLPCindex_g[12*2]; + WebRtc_Word16 tmp_fre[FRAMESAMPLES], tmp_fim[FRAMESAMPLES]; + + /* Sanity Check - possible values for BWnumber is 0 - 23 */ + if ((BWnumber < 0) || (BWnumber > 23)) { + return -ISAC_RANGE_ERROR_BW_ESTIMATOR; + } + + /* reset bitstream */ + ISACBitStr_obj->W_upper = 0xFFFFFFFF; + ISACBitStr_obj->streamval = 0; + ISACBitStr_obj->stream_index = 0; + + /* encode frame length */ + status = WebRtcIsac_EncodeFrameLen(ISACSavedEnc_obj->framelength, + ISACBitStr_obj); + if (status < 0) { + /* Wrong frame size */ + return status; + } + + /* Transcoding */ + if ((scale > 0.0) && (scale < 1.0)) { + /* Compensate LPC gain */ + for (ii = 0; + ii < ((ORDERLO + 1)* SUBFRAMES * (1 + ISACSavedEnc_obj->startIdx)); + ii++) { + tmpLPCcoeffs_lo[ii] = scale * ISACSavedEnc_obj->LPCcoeffs_lo[ii]; + } + for (ii = 0; + ii < ((ORDERHI + 1) * SUBFRAMES *(1 + ISACSavedEnc_obj->startIdx)); + ii++) { + tmpLPCcoeffs_hi[ii] = scale * ISACSavedEnc_obj->LPCcoeffs_hi[ii]; + } + /* Scale DFT */ + for (ii = 0; + ii < (FRAMESAMPLES_HALF * (1 + ISACSavedEnc_obj->startIdx)); + ii++) { + tmp_fre[ii] = (WebRtc_Word16)((scale) * + (float)ISACSavedEnc_obj->fre[ii]) ; + tmp_fim[ii] = (WebRtc_Word16)((scale) * + (float)ISACSavedEnc_obj->fim[ii]) ; + } + } else { + for (ii = 0; + ii < (KLT_ORDER_GAIN * (1 + ISACSavedEnc_obj->startIdx)); + ii++) { + tmpLPCindex_g[ii] = ISACSavedEnc_obj->LPCindex_g[ii]; + } + for (ii = 0; + ii < (FRAMESAMPLES_HALF * (1 + ISACSavedEnc_obj->startIdx)); + ii++) { + tmp_fre[ii] = ISACSavedEnc_obj->fre[ii]; + tmp_fim[ii] = ISACSavedEnc_obj->fim[ii]; + } + } + + /* encode bandwidth estimate */ + WebRtcIsac_EncodeReceiveBw(&BWno, ISACBitStr_obj); + + /* Loop over number of 30 msec */ + for (ii = 0; ii <= ISACSavedEnc_obj->startIdx; ii++) { + /* encode pitch gains */ + *WebRtcIsac_kQPitchGainCdf_ptr = WebRtcIsac_kQPitchGainCdf; + WebRtcIsac_EncHistMulti(ISACBitStr_obj, + &ISACSavedEnc_obj->pitchGain_index[ii], WebRtcIsac_kQPitchGainCdf_ptr, 1); + + /* entropy coding of quantization pitch lags */ + /* voicing classificiation */ + if (ISACSavedEnc_obj->meanGain[ii] < 0.2) { + cdf = WebRtcIsac_kQPitchLagCdfPtrLo; + } else if (ISACSavedEnc_obj->meanGain[ii] < 0.4) { + cdf = WebRtcIsac_kQPitchLagCdfPtrMid; + } else { + cdf = WebRtcIsac_kQPitchLagCdfPtrHi; + } + WebRtcIsac_EncHistMulti(ISACBitStr_obj, + &ISACSavedEnc_obj->pitchIndex[PITCH_SUBFRAMES*ii], cdf, + PITCH_SUBFRAMES); + + /* LPC */ + /* entropy coding of model number */ + WebRtcIsac_EncHistMulti(ISACBitStr_obj, + &ISACSavedEnc_obj->LPCmodel[ii], WebRtcIsac_kQKltModelCdfPtr, 1); + + /* entropy coding of quantization indices - LPC shape only */ + WebRtcIsac_EncHistMulti(ISACBitStr_obj, + &ISACSavedEnc_obj->LPCindex_s[KLT_ORDER_SHAPE*ii], + WebRtcIsac_kQKltCdfPtrShape[ISACSavedEnc_obj->LPCmodel[ii]], + KLT_ORDER_SHAPE); + + /* If transcoding, get new LPC gain indices */ + if (scale < 1.0) { + WebRtcIsac_TranscodeLPCCoef(&tmpLPCcoeffs_lo[(ORDERLO+1) * + SUBFRAMES*ii], &tmpLPCcoeffs_hi[(ORDERHI+1)*SUBFRAMES*ii], + ISACSavedEnc_obj->LPCmodel[ii], + &tmpLPCindex_g[KLT_ORDER_GAIN * ii]); + } + + /* entropy coding of quantization indices - LPC gain */ + WebRtcIsac_EncHistMulti(ISACBitStr_obj, + &tmpLPCindex_g[KLT_ORDER_GAIN*ii], WebRtcIsac_kQKltCdfPtrGain[ + ISACSavedEnc_obj->LPCmodel[ii]], KLT_ORDER_GAIN); + + /* quantization and lossless coding */ + status = WebRtcIsac_EncodeSpecLb(&tmp_fre[ii*FRAMESAMPLES_HALF], + &tmp_fim[ii*FRAMESAMPLES_HALF], ISACBitStr_obj, + ISACSavedEnc_obj->AvgPitchGain[ii]); + if (status < 0) { + return status; + } + } + + /* complete arithmetic coding */ + return WebRtcIsac_EncTerminate(ISACBitStr_obj); +} + + + + +int WebRtcIsac_EncodeStoredDataUb12( + const ISACUBSaveEncDataStruct* ISACSavedEnc_obj, + Bitstr* bitStream, + WebRtc_Word32 jitterInfo, + float scale) +{ + int n; + int err; + double lpcGain[SUBFRAMES]; + WebRtc_Word16 realFFT[FRAMESAMPLES_HALF]; + WebRtc_Word16 imagFFT[FRAMESAMPLES_HALF]; + + /* reset bitstream */ + bitStream->W_upper = 0xFFFFFFFF; + bitStream->streamval = 0; + bitStream->stream_index = 0; + + // Encode jitter index + WebRtcIsac_EncodeJitterInfo(jitterInfo, bitStream); + + err = WebRtcIsac_EncodeBandwidth(isac12kHz, bitStream); + if(err < 0) + { + return err; + } + + // Encode LPC-shape + WebRtcIsac_EncHistMulti(bitStream, ISACSavedEnc_obj->indexLPCShape, + WebRtcIsac_kLpcShapeCdfMatUb12, UB_LPC_ORDER * UB_LPC_VEC_PER_FRAME); + + + // we only consider scales between zero and one. + if((scale <= 0.0) || (scale > 1.0)) + { + scale = 1.0f; + } + + if(scale == 1.0f) + { + //memcpy(lpcGain, ISACSavedEnc_obj->lpcGain, SUBFRAMES * sizeof(double)); + WebRtcIsac_EncHistMulti(bitStream, ISACSavedEnc_obj->lpcGainIndex, + WebRtcIsac_kLpcGainCdfMat, UB_LPC_GAIN_DIM); + // store FFT coefficients + err = WebRtcIsac_EncodeSpecUB12(ISACSavedEnc_obj->realFFT, + ISACSavedEnc_obj->imagFFT, bitStream); + } + else + { + /* scale lpc gain and FFT coefficients */ + for(n = 0; n < SUBFRAMES; n++) + { + lpcGain[n] = scale * ISACSavedEnc_obj->lpcGain[n]; + } + // store lpc gain + WebRtcIsac_StoreLpcGainUb(lpcGain, bitStream); + for(n = 0; n < FRAMESAMPLES_HALF; n++) + { + realFFT[n] = (WebRtc_Word16)(scale * (float)ISACSavedEnc_obj->realFFT[n] + 0.5f); + imagFFT[n] = (WebRtc_Word16)(scale * (float)ISACSavedEnc_obj->imagFFT[n] + 0.5f); + } + // store FFT coefficients + err = WebRtcIsac_EncodeSpecUB12(realFFT, imagFFT, bitStream); + } + if(err < 0) + { + // error happened while encoding FFT coefficients. + return err; + } + + /* complete arithmetic coding */ + return WebRtcIsac_EncTerminate(bitStream); +} + + +int +WebRtcIsac_EncodeStoredDataUb16( + const ISACUBSaveEncDataStruct* ISACSavedEnc_obj, + Bitstr* bitStream, + WebRtc_Word32 jitterInfo, + float scale) +{ + int n; + int err; + double lpcGain[SUBFRAMES << 1]; + WebRtc_Word16 realFFT[FRAMESAMPLES_HALF]; + WebRtc_Word16 imagFFT[FRAMESAMPLES_HALF]; + + /* reset bitstream */ + bitStream->W_upper = 0xFFFFFFFF; + bitStream->streamval = 0; + bitStream->stream_index = 0; + + // Encode jitter index + WebRtcIsac_EncodeJitterInfo(jitterInfo, bitStream); + + err = WebRtcIsac_EncodeBandwidth(isac16kHz, bitStream); + if(err < 0) + { + return err; + } + + WebRtcIsac_EncHistMulti(bitStream, ISACSavedEnc_obj->indexLPCShape, + WebRtcIsac_kLpcShapeCdfMatUb16, UB_LPC_ORDER * UB16_LPC_VEC_PER_FRAME); + + // we only consider scales between zero and one. + if((scale <= 0.0) || (scale > 1.0)) + { + scale = 1.0f; + } + + if(scale == 1.0f) + { + // store gains + WebRtcIsac_EncHistMulti(bitStream, ISACSavedEnc_obj->lpcGainIndex, + WebRtcIsac_kLpcGainCdfMat, UB_LPC_GAIN_DIM); + WebRtcIsac_EncHistMulti(bitStream, &ISACSavedEnc_obj->lpcGainIndex[SUBFRAMES], + WebRtcIsac_kLpcGainCdfMat, UB_LPC_GAIN_DIM); + // store FFT coefficients + err = WebRtcIsac_EncodeSpecUB16(ISACSavedEnc_obj->realFFT, + ISACSavedEnc_obj->imagFFT, bitStream); + + } + else + { + /* Scale Gain */ + for(n = 0; n < SUBFRAMES; n++) + { + lpcGain[n] = scale * ISACSavedEnc_obj->lpcGain[n]; + lpcGain[n + SUBFRAMES] = scale * ISACSavedEnc_obj->lpcGain[n + SUBFRAMES]; + } + // store lpc gain + WebRtcIsac_StoreLpcGainUb(lpcGain, bitStream); + WebRtcIsac_StoreLpcGainUb(&lpcGain[SUBFRAMES], bitStream); + /* scale FFT coefficients */ + for(n = 0; n < FRAMESAMPLES_HALF; n++) + { + realFFT[n] = (WebRtc_Word16)(scale * (float)ISACSavedEnc_obj->realFFT[n] + 0.5f); + imagFFT[n] = (WebRtc_Word16)(scale * (float)ISACSavedEnc_obj->imagFFT[n] + 0.5f); + } + // store FFT coefficients + err = WebRtcIsac_EncodeSpecUB16(realFFT, imagFFT, bitStream); + } + + if(err < 0) + { + // error happened while encoding FFT coefficients. + return err; + } + + /* complete arithmetic coding */ + return WebRtcIsac_EncTerminate(bitStream); +} + + +WebRtc_Word16 +WebRtcIsac_GetRedPayloadUb( + const ISACUBSaveEncDataStruct* ISACSavedEncObj, + Bitstr* bitStreamObj, + enum ISACBandwidth bandwidth) +{ + int n; + WebRtc_Word16 status; + WebRtc_Word16 realFFT[FRAMESAMPLES_HALF]; + WebRtc_Word16 imagFFT[FRAMESAMPLES_HALF]; + + // store bit-stream object. + memcpy(bitStreamObj, &ISACSavedEncObj->bitStreamObj, sizeof(Bitstr)); + + // Scale FFT coefficients. + for(n = 0; n < FRAMESAMPLES_HALF; n++) + { + realFFT[n] = (WebRtc_Word16)((float)ISACSavedEncObj->realFFT[n] * + RCU_TRANSCODING_SCALE_UB + 0.5); + imagFFT[n] = (WebRtc_Word16)((float)ISACSavedEncObj->imagFFT[n] * + RCU_TRANSCODING_SCALE_UB + 0.5); + } + + switch(bandwidth) + { + case isac12kHz: + { + status = WebRtcIsac_EncodeSpecUB12(realFFT, imagFFT, bitStreamObj); + break; + } + case isac16kHz: + { + status = WebRtcIsac_EncodeSpecUB16(realFFT, imagFFT, bitStreamObj); + break; + } + default: + return -1; + } + + if(status < 0) + { + // error happened + return status; + } + else + { + // terminate entropy coding + return WebRtcIsac_EncTerminate(bitStreamObj); + } +} diff --git a/src/mod/codecs/mod_iSAC/encode_lpc_swb.c b/src/mod/codecs/mod_iSAC/encode_lpc_swb.c new file mode 100644 index 0000000000..2bf4c36460 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/encode_lpc_swb.c @@ -0,0 +1,708 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * code_LPC_UB.c + * + * This file contains definition of functions used to + * encode LPC parameters (Shape & gain) of the upper band. + * + */ + +#include "encode_lpc_swb.h" +#include "typedefs.h" +#include "settings.h" + +#include "lpc_shape_swb12_tables.h" +#include "lpc_shape_swb16_tables.h" +#include "lpc_gain_swb_tables.h" + +#include +#include +#include + +/****************************************************************************** + * WebRtcIsac_RemoveLarMean() + * + * Remove the means from LAR coefficients. + * + * Input: + * -lar : pointer to lar vectors. LAR vectors are + * concatenated. + * -bandwidth : indicates if the given LAR vectors belong + * to SWB-12kHz or SWB-16kHz. + * + * Output: + * -lar : pointer to mean-removed LAR:s. + * + * + */ +WebRtc_Word16 +WebRtcIsac_RemoveLarMean( + double* lar, + WebRtc_Word16 bandwidth) +{ + WebRtc_Word16 coeffCntr; + WebRtc_Word16 vecCntr; + WebRtc_Word16 numVec; + const double* meanLAR; + switch(bandwidth) + { + case isac12kHz: + { + numVec = UB_LPC_VEC_PER_FRAME; + meanLAR = WebRtcIsac_kMeanLarUb12; + break; + } + case isac16kHz: + { + numVec = UB16_LPC_VEC_PER_FRAME; + meanLAR = WebRtcIsac_kMeanLarUb16; + break; + } + default: + return -1; + } + + for(vecCntr = 0; vecCntr < numVec; vecCntr++) + { + for(coeffCntr = 0; coeffCntr < UB_LPC_ORDER; coeffCntr++) + { + // REMOVE MEAN + *lar++ -= meanLAR[coeffCntr]; + } + } + return 0; +} + +/****************************************************************************** + * WebRtcIsac_DecorrelateIntraVec() + * + * Remove the correlation amonge the components of LAR vectors. If LAR vectors + * of one frame are put in a matrix where each column is a LAR vector of a + * sub-frame, then this is equivalent to multiplying the LAR matrix with + * a decorrelting mtrix from left. + * + * Input: + * -inLar : pointer to mean-removed LAR vecrtors. + * -bandwidth : indicates if the given LAR vectors belong + * to SWB-12kHz or SWB-16kHz. + * + * Output: + * -out : decorrelated LAR vectors. + */ +WebRtc_Word16 +WebRtcIsac_DecorrelateIntraVec( + const double* data, + double* out, + WebRtc_Word16 bandwidth) +{ + const double* ptrData; + const double* ptrRow; + WebRtc_Word16 rowCntr; + WebRtc_Word16 colCntr; + WebRtc_Word16 larVecCntr; + WebRtc_Word16 numVec; + const double* decorrMat; + switch(bandwidth) + { + case isac12kHz: + { + decorrMat = &WebRtcIsac_kIntraVecDecorrMatUb12[0][0]; + numVec = UB_LPC_VEC_PER_FRAME; + break; + } + case isac16kHz: + { + decorrMat = &WebRtcIsac_kIintraVecDecorrMatUb16[0][0]; + numVec = UB16_LPC_VEC_PER_FRAME; + break; + } + default: + return -1; + } + + // + // decorrMat * data + // + // data is assumed to contain 'numVec' of LAR + // vectors (mean removed) each of dimension 'UB_LPC_ORDER' + // concatenated one after the other. + // + + ptrData = data; + for(larVecCntr = 0; larVecCntr < numVec; larVecCntr++) + { + for(rowCntr = 0; rowCntr < UB_LPC_ORDER; rowCntr++) + { + ptrRow = &decorrMat[rowCntr * UB_LPC_ORDER]; + *out = 0; + for(colCntr = 0; colCntr < UB_LPC_ORDER; colCntr++) + { + *out += ptrData[colCntr] * ptrRow[colCntr]; + } + out++; + } + ptrData += UB_LPC_ORDER; + } + return 0; +} + +/****************************************************************************** + * WebRtcIsac_DecorrelateInterVec() + * + * Remover the correlation among mean-removed LAR vectors. If LAR vectors + * of one frame are put in a matrix where each column is a LAR vector of a + * sub-frame, then this is equivalent to multiplying the LAR matrix with + * a decorrelting mtrix from right. + * + * Input: + * -data : pointer to matrix of LAR vectors. The matrix + * is stored column-wise. + * -bandwidth : indicates if the given LAR vectors belong + * to SWB-12kHz or SWB-16kHz. + * + * Output: + * -out : decorrelated LAR vectors. + */ +WebRtc_Word16 +WebRtcIsac_DecorrelateInterVec( + const double* data, + double* out, + WebRtc_Word16 bandwidth) +{ + WebRtc_Word16 coeffCntr; + WebRtc_Word16 rowCntr; + WebRtc_Word16 colCntr; + const double* decorrMat; + WebRtc_Word16 interVecDim; + + switch(bandwidth) + { + case isac12kHz: + { + decorrMat = &WebRtcIsac_kInterVecDecorrMatUb12[0][0]; + interVecDim = UB_LPC_VEC_PER_FRAME; + break; + } + case isac16kHz: + { + decorrMat = &WebRtcIsac_kInterVecDecorrMatUb16[0][0]; + interVecDim = UB16_LPC_VEC_PER_FRAME; + break; + } + default: + return -1; + } + + // + // data * decorrMat + // + // data is of size 'interVecDim' * 'UB_LPC_ORDER' + // That is 'interVecDim' of LAR vectors (mean removed) + // in columns each of dimension 'UB_LPC_ORDER'. + // matrix is stored column-wise. + // + + for(coeffCntr = 0; coeffCntr < UB_LPC_ORDER; coeffCntr++) + { + for(colCntr = 0; colCntr < interVecDim; colCntr++) + { + out[coeffCntr + colCntr * UB_LPC_ORDER] = 0; + for(rowCntr = 0; rowCntr < interVecDim; rowCntr++) + { + out[coeffCntr + colCntr * UB_LPC_ORDER] += + data[coeffCntr + rowCntr * UB_LPC_ORDER] * + decorrMat[rowCntr * interVecDim + colCntr]; + } + } + } + return 0; +} + +/****************************************************************************** + * WebRtcIsac_QuantizeUncorrLar() + * + * Quantize the uncorrelated parameters. + * + * Input: + * -data : uncorrelated LAR vectors. + * -bandwidth : indicates if the given LAR vectors belong + * to SWB-12kHz or SWB-16kHz. + * + * Output: + * -data : quantized version of the input. + * -idx : pointer to quantization indices. + */ +double +WebRtcIsac_QuantizeUncorrLar( + double* data, + int* recIdx, + WebRtc_Word16 bandwidth) +{ + WebRtc_Word16 cntr; + WebRtc_Word32 idx; + WebRtc_Word16 interVecDim; + const double* leftRecPoint; + double quantizationStepSize; + const WebRtc_Word16* numQuantCell; + switch(bandwidth) + { + case isac12kHz: + { + leftRecPoint = WebRtcIsac_kLpcShapeLeftRecPointUb12; + quantizationStepSize = WebRtcIsac_kLpcShapeQStepSizeUb12; + numQuantCell = WebRtcIsac_kLpcShapeNumRecPointUb12; + interVecDim = UB_LPC_VEC_PER_FRAME; + break; + } + case isac16kHz: + { + leftRecPoint = WebRtcIsac_kLpcShapeLeftRecPointUb16; + quantizationStepSize = WebRtcIsac_kLpcShapeQStepSizeUb16; + numQuantCell = WebRtcIsac_kLpcShapeNumRecPointUb16; + interVecDim = UB16_LPC_VEC_PER_FRAME; + break; + } + default: + return -1; + } + + // + // Quantize the parametrs. + // + for(cntr = 0; cntr < UB_LPC_ORDER * interVecDim; cntr++) + { + idx = (WebRtc_Word32)floor((*data - leftRecPoint[cntr]) / + quantizationStepSize + 0.5); + if(idx < 0) + { + idx = 0; + } + else if(idx >= numQuantCell[cntr]) + { + idx = numQuantCell[cntr] - 1; + } + + *data++ = leftRecPoint[cntr] + idx * quantizationStepSize; + *recIdx++ = idx; + } + return 0; +} + + +/****************************************************************************** + * WebRtcIsac_DequantizeLpcParam() + * + * Get the quantized value of uncorrelated LARs given the quantization indices. + * + * Input: + * -idx : pointer to quantiztion indices. + * -bandwidth : indicates if the given LAR vectors belong + * to SWB-12kHz or SWB-16kHz. + * + * Output: + * -out : pointer to quantized values. + */ +WebRtc_Word16 +WebRtcIsac_DequantizeLpcParam( + const int* idx, + double* out, + WebRtc_Word16 bandwidth) +{ + WebRtc_Word16 cntr; + WebRtc_Word16 interVecDim; + const double* leftRecPoint; + double quantizationStepSize; + + switch(bandwidth) + { + case isac12kHz: + { + leftRecPoint = WebRtcIsac_kLpcShapeLeftRecPointUb12; + quantizationStepSize = WebRtcIsac_kLpcShapeQStepSizeUb12; + interVecDim = UB_LPC_VEC_PER_FRAME; + break; + } + case isac16kHz: + { + leftRecPoint = WebRtcIsac_kLpcShapeLeftRecPointUb16; + quantizationStepSize = WebRtcIsac_kLpcShapeQStepSizeUb16; + interVecDim = UB16_LPC_VEC_PER_FRAME; + break; + } + default: + return -1; + } + + // + // Dequantize given the quantization indices + // + + for(cntr = 0; cntr < UB_LPC_ORDER * interVecDim; cntr++) + { + *out++ = leftRecPoint[cntr] + *idx++ * quantizationStepSize; + } + return 0; +} + + +/****************************************************************************** + * WebRtcIsac_CorrelateIntraVec() + * + * This is the inverse of WebRtcIsac_DecorrelateIntraVec(). + * + * Input: + * -data : uncorrelated parameters. + * -bandwidth : indicates if the given LAR vectors belong + * to SWB-12kHz or SWB-16kHz. + * + * Output: + * -out : correlated parametrs. + */ +WebRtc_Word16 +WebRtcIsac_CorrelateIntraVec( + const double* data, + double* out, + WebRtc_Word16 bandwidth) +{ + WebRtc_Word16 vecCntr; + WebRtc_Word16 rowCntr; + WebRtc_Word16 colCntr; + WebRtc_Word16 numVec; + const double* ptrData; + const double* intraVecDecorrMat; + + switch(bandwidth) + { + case isac12kHz: + { + numVec = UB_LPC_VEC_PER_FRAME; + intraVecDecorrMat = &WebRtcIsac_kIntraVecDecorrMatUb12[0][0]; + break; + } + case isac16kHz: + { + numVec = UB16_LPC_VEC_PER_FRAME; + intraVecDecorrMat = &WebRtcIsac_kIintraVecDecorrMatUb16[0][0]; + break; + } + default: + return -1; + } + + + ptrData = data; + for(vecCntr = 0; vecCntr < numVec; vecCntr++) + { + for(colCntr = 0; colCntr < UB_LPC_ORDER; colCntr++) + { + *out = 0; + for(rowCntr = 0; rowCntr < UB_LPC_ORDER; rowCntr++) + { + *out += ptrData[rowCntr] * + intraVecDecorrMat[rowCntr * UB_LPC_ORDER + colCntr]; + } + out++; + } + ptrData += UB_LPC_ORDER; + } + return 0; +} + +/****************************************************************************** + * WebRtcIsac_CorrelateInterVec() + * + * This is the inverse of WebRtcIsac_DecorrelateInterVec(). + * + * Input: + * -data + * -bandwidth : indicates if the given LAR vectors belong + * to SWB-12kHz or SWB-16kHz. + * + * Output: + * -out : correlated parametrs. + */ +WebRtc_Word16 +WebRtcIsac_CorrelateInterVec( + const double* data, + double* out, + WebRtc_Word16 bandwidth) +{ + WebRtc_Word16 coeffCntr; + WebRtc_Word16 rowCntr; + WebRtc_Word16 colCntr; + WebRtc_Word16 interVecDim; + double myVec[UB16_LPC_VEC_PER_FRAME]; + const double* interVecDecorrMat; + + switch(bandwidth) + { + case isac12kHz: + { + interVecDim = UB_LPC_VEC_PER_FRAME; + interVecDecorrMat = &WebRtcIsac_kInterVecDecorrMatUb12[0][0]; + break; + } + case isac16kHz: + { + interVecDim = UB16_LPC_VEC_PER_FRAME; + interVecDecorrMat = &WebRtcIsac_kInterVecDecorrMatUb16[0][0]; + break; + } + default: + return -1; + } + + for(coeffCntr = 0; coeffCntr < UB_LPC_ORDER; coeffCntr++) + { + for(rowCntr = 0; rowCntr < interVecDim; rowCntr++) + { + myVec[rowCntr] = 0; + for(colCntr = 0; colCntr < interVecDim; colCntr++) + { + myVec[rowCntr] += data[coeffCntr + colCntr * UB_LPC_ORDER] * //*ptrData * + interVecDecorrMat[rowCntr * interVecDim + colCntr]; + //ptrData += UB_LPC_ORDER; + } + } + + for(rowCntr = 0; rowCntr < interVecDim; rowCntr++) + { + out[coeffCntr + rowCntr * UB_LPC_ORDER] = myVec[rowCntr]; + } + } + return 0; +} + +/****************************************************************************** + * WebRtcIsac_AddLarMean() + * + * This is the inverse of WebRtcIsac_RemoveLarMean() + * + * Input: + * -data : pointer to mean-removed LAR:s. + * -bandwidth : indicates if the given LAR vectors belong + * to SWB-12kHz or SWB-16kHz. + * + * Output: + * -data : pointer to LARs. + */ +WebRtc_Word16 +WebRtcIsac_AddLarMean( + double* data, + WebRtc_Word16 bandwidth) +{ + WebRtc_Word16 coeffCntr; + WebRtc_Word16 vecCntr; + WebRtc_Word16 numVec; + const double* meanLAR; + + switch(bandwidth) + { + case isac12kHz: + { + numVec = UB_LPC_VEC_PER_FRAME; + meanLAR = WebRtcIsac_kMeanLarUb12; + break; + } + case isac16kHz: + { + numVec = UB16_LPC_VEC_PER_FRAME; + meanLAR = WebRtcIsac_kMeanLarUb16; + break; + } + default: + return -1; + } + + for(vecCntr = 0; vecCntr < numVec; vecCntr++) + { + for(coeffCntr = 0; coeffCntr < UB_LPC_ORDER; coeffCntr++) + { + *data++ += meanLAR[coeffCntr]; + } + } + return 0; +} + +/****************************************************************************** + * WebRtcIsac_ToLogDomainRemoveMean() + * + * Transform the LPC gain to log domain then remove the mean value. + * + * Input: + * -lpcGain : pointer to LPC Gain, expecting 6 LPC gains + * + * Output: + * -lpcGain : mean-removed in log domain. + */ +WebRtc_Word16 +WebRtcIsac_ToLogDomainRemoveMean( + double* data) +{ + WebRtc_Word16 coeffCntr; + for(coeffCntr = 0; coeffCntr < UB_LPC_GAIN_DIM; coeffCntr++) + { + data[coeffCntr] = log(data[coeffCntr]) - WebRtcIsac_kMeanLpcGain; + } + return 0; +} + + +/****************************************************************************** + * WebRtcIsac_DecorrelateLPGain() + * + * Decorrelate LPC gains. There are 6 LPC Gains per frame. This is like + * multiplying gain vector with decorrelating matrix. + * + * Input: + * -data : LPC gain in log-domain with mean removed. + * + * Output: + * -out : decorrelated parameters. + */ +WebRtc_Word16 WebRtcIsac_DecorrelateLPGain( + const double* data, + double* out) +{ + WebRtc_Word16 rowCntr; + WebRtc_Word16 colCntr; + + for(colCntr = 0; colCntr < UB_LPC_GAIN_DIM; colCntr++) + { + *out = 0; + for(rowCntr = 0; rowCntr < UB_LPC_GAIN_DIM; rowCntr++) + { + *out += data[rowCntr] * WebRtcIsac_kLpcGainDecorrMat[rowCntr][colCntr]; + } + out++; + } + return 0; +} + +/****************************************************************************** + * WebRtcIsac_QuantizeLpcGain() + * + * Quantize the decorrelated log-domain gains. + * + * Input: + * -lpcGain : uncorrelated LPC gains. + * + * Output: + * -idx : quantization indices + * -lpcGain : quantized value of the inpt. + */ +double WebRtcIsac_QuantizeLpcGain( + double* data, + int* idx) +{ + WebRtc_Word16 coeffCntr; + for(coeffCntr = 0; coeffCntr < UB_LPC_GAIN_DIM; coeffCntr++) + { + *idx = (int)floor((*data - WebRtcIsac_kLeftRecPointLpcGain[coeffCntr]) / + WebRtcIsac_kQSizeLpcGain + 0.5); + + if(*idx < 0) + { + *idx = 0; + } + else if(*idx >= WebRtcIsac_kNumQCellLpcGain[coeffCntr]) + { + *idx = WebRtcIsac_kNumQCellLpcGain[coeffCntr] - 1; + } + *data = WebRtcIsac_kLeftRecPointLpcGain[coeffCntr] + *idx * + WebRtcIsac_kQSizeLpcGain; + + data++; + idx++; + } + return 0; +} + +/****************************************************************************** + * WebRtcIsac_DequantizeLpcGain() + * + * Get the quantized values given the quantization indices. + * + * Input: + * -idx : pointer to quantization indices. + * + * Output: + * -lpcGains : quantized values of the given parametes. + */ +WebRtc_Word16 WebRtcIsac_DequantizeLpcGain( + const int* idx, + double* out) +{ + WebRtc_Word16 coeffCntr; + for(coeffCntr = 0; coeffCntr < UB_LPC_GAIN_DIM; coeffCntr++) + { + *out = WebRtcIsac_kLeftRecPointLpcGain[coeffCntr] + *idx * + WebRtcIsac_kQSizeLpcGain; + out++; + idx++; + } + return 0; +} + +/****************************************************************************** + * WebRtcIsac_CorrelateLpcGain() + * + * This is the inverse of WebRtcIsac_DecorrelateLPGain(). + * + * Input: + * -data : decorrelated parameters. + * + * Output: + * -out : correlated parameters. + */ +WebRtc_Word16 WebRtcIsac_CorrelateLpcGain( + const double* data, + double* out) +{ + WebRtc_Word16 rowCntr; + WebRtc_Word16 colCntr; + + for(rowCntr = 0; rowCntr < UB_LPC_GAIN_DIM; rowCntr++) + { + *out = 0; + for(colCntr = 0; colCntr < UB_LPC_GAIN_DIM; colCntr++) + { + *out += WebRtcIsac_kLpcGainDecorrMat[rowCntr][colCntr] * data[colCntr]; + } + out++; + } + + return 0; +} + + +/****************************************************************************** + * WebRtcIsac_AddMeanToLinearDomain() + * + * This is the inverse of WebRtcIsac_ToLogDomainRemoveMean(). + * + * Input: + * -lpcGain : LPC gain in log-domain & mean removed + * + * Output: + * -lpcGain : LPC gain in normal domain. + */ +WebRtc_Word16 WebRtcIsac_AddMeanToLinearDomain( + double* lpcGains) +{ + WebRtc_Word16 coeffCntr; + for(coeffCntr = 0; coeffCntr < UB_LPC_GAIN_DIM; coeffCntr++) + { + lpcGains[coeffCntr] = exp(lpcGains[coeffCntr] + WebRtcIsac_kMeanLpcGain); + } + return 0; +} diff --git a/src/mod/codecs/mod_iSAC/encode_lpc_swb.h b/src/mod/codecs/mod_iSAC/encode_lpc_swb.h new file mode 100644 index 0000000000..e7f1a76af2 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/encode_lpc_swb.h @@ -0,0 +1,283 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * encode_lpc_swb.h + * + * This file contains declaration of functions used to + * encode LPC parameters (Shape & gain) of the upper band. + * + */ + +#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_ENCODE_LPC_SWB_H_ +#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_ENCODE_LPC_SWB_H_ + +#include "typedefs.h" +#include "settings.h" +#include "structs.h" + + +/****************************************************************************** + * WebRtcIsac_RemoveLarMean() + * + * Remove the means from LAR coefficients. + * + * Input: + * -lar : pointer to lar vectors. LAR vectors are + * concatenated. + * -bandwidth : indicates if the given LAR vectors belong + * to SWB-12kHz or SWB-16kHz. + * + * Output: + * -lar : pointer to mean-removed LAR:s. + * + * + */ +WebRtc_Word16 WebRtcIsac_RemoveLarMean( + double* lar, + WebRtc_Word16 bandwidth); + +/****************************************************************************** + * WebRtcIsac_DecorrelateIntraVec() + * + * Remove the correlation amonge the components of LAR vectors. If LAR vectors + * of one frame are put in a matrix where each column is a LAR vector of a + * sub-frame, then this is equivalent to multiplying the LAR matrix with + * a decorrelting mtrix from left. + * + * Input: + * -inLar : pointer to mean-removed LAR vecrtors. + * -bandwidth : indicates if the given LAR vectors belong + * to SWB-12kHz or SWB-16kHz. + * + * Output: + * -out : decorrelated LAR vectors. + */ +WebRtc_Word16 WebRtcIsac_DecorrelateIntraVec( + const double* inLAR, + double* out, + WebRtc_Word16 bandwidth); + + +/****************************************************************************** + * WebRtcIsac_DecorrelateInterVec() + * + * Remover the correlation among mean-removed LAR vectors. If LAR vectors + * of one frame are put in a matrix where each column is a LAR vector of a + * sub-frame, then this is equivalent to multiplying the LAR matrix with + * a decorrelting mtrix from right. + * + * Input: + * -data : pointer to matrix of LAR vectors. The matrix + * is stored column-wise. + * -bandwidth : indicates if the given LAR vectors belong + * to SWB-12kHz or SWB-16kHz. + * + * Output: + * -out : decorrelated LAR vectors. + */ +WebRtc_Word16 WebRtcIsac_DecorrelateInterVec( + const double* data, + double* out, + WebRtc_Word16 bandwidth); + + +/****************************************************************************** + * WebRtcIsac_QuantizeUncorrLar() + * + * Quantize the uncorrelated parameters. + * + * Input: + * -data : uncorrelated LAR vectors. + * -bandwidth : indicates if the given LAR vectors belong + * to SWB-12kHz or SWB-16kHz. + * + * Output: + * -data : quantized version of the input. + * -idx : pointer to quantization indices. + */ +double WebRtcIsac_QuantizeUncorrLar( + double* data, + int* idx, + WebRtc_Word16 bandwidth); + + +/****************************************************************************** + * WebRtcIsac_CorrelateIntraVec() + * + * This is the inverse of WebRtcIsac_DecorrelateIntraVec(). + * + * Input: + * -data : uncorrelated parameters. + * -bandwidth : indicates if the given LAR vectors belong + * to SWB-12kHz or SWB-16kHz. + * + * Output: + * -out : correlated parametrs. + */ +WebRtc_Word16 WebRtcIsac_CorrelateIntraVec( + const double* data, + double* out, + WebRtc_Word16 bandwidth); + + +/****************************************************************************** + * WebRtcIsac_CorrelateInterVec() + * + * This is the inverse of WebRtcIsac_DecorrelateInterVec(). + * + * Input: + * -data + * -bandwidth : indicates if the given LAR vectors belong + * to SWB-12kHz or SWB-16kHz. + * + * Output: + * -out : correlated parametrs. + */ +WebRtc_Word16 WebRtcIsac_CorrelateInterVec( + const double* data, + double* out, + WebRtc_Word16 bandwidth); + + +/****************************************************************************** + * WebRtcIsac_AddLarMean() + * + * This is the inverse of WebRtcIsac_RemoveLarMean() + * + * Input: + * -data : pointer to mean-removed LAR:s. + * -bandwidth : indicates if the given LAR vectors belong + * to SWB-12kHz or SWB-16kHz. + * + * Output: + * -data : pointer to LARs. + */ +WebRtc_Word16 WebRtcIsac_AddLarMean( + double* data, + WebRtc_Word16 bandwidth); + + +/****************************************************************************** + * WebRtcIsac_DequantizeLpcParam() + * + * Get the quantized value of uncorrelated LARs given the quantization indices. + * + * Input: + * -idx : pointer to quantiztion indices. + * -bandwidth : indicates if the given LAR vectors belong + * to SWB-12kHz or SWB-16kHz. + * + * Output: + * -out : pointer to quantized values. + */ +WebRtc_Word16 WebRtcIsac_DequantizeLpcParam( + const int* idx, + double* out, + WebRtc_Word16 bandwidth); + + +/****************************************************************************** + * WebRtcIsac_ToLogDomainRemoveMean() + * + * Transform the LPC gain to log domain then remove the mean value. + * + * Input: + * -lpcGain : pointer to LPC Gain, expecting 6 LPC gains + * + * Output: + * -lpcGain : mean-removed in log domain. + */ +WebRtc_Word16 WebRtcIsac_ToLogDomainRemoveMean( + double* lpGains); + + +/****************************************************************************** + * WebRtcIsac_DecorrelateLPGain() + * + * Decorrelate LPC gains. There are 6 LPC Gains per frame. This is like + * multiplying gain vector with decorrelating matrix. + * + * Input: + * -data : LPC gain in log-domain with mean removed. + * + * Output: + * -out : decorrelated parameters. + */ +WebRtc_Word16 WebRtcIsac_DecorrelateLPGain( + const double* data, + double* out); + + +/****************************************************************************** + * WebRtcIsac_QuantizeLpcGain() + * + * Quantize the decorrelated log-domain gains. + * + * Input: + * -lpcGain : uncorrelated LPC gains. + * + * Output: + * -idx : quantization indices + * -lpcGain : quantized value of the inpt. + */ +double WebRtcIsac_QuantizeLpcGain( + double* lpGains, + int* idx); + + +/****************************************************************************** + * WebRtcIsac_DequantizeLpcGain() + * + * Get the quantized values given the quantization indices. + * + * Input: + * -idx : pointer to quantization indices. + * + * Output: + * -lpcGains : quantized values of the given parametes. + */ +WebRtc_Word16 WebRtcIsac_DequantizeLpcGain( + const int* idx, + double* lpGains); + + +/****************************************************************************** + * WebRtcIsac_CorrelateLpcGain() + * + * This is the inverse of WebRtcIsac_DecorrelateLPGain(). + * + * Input: + * -data : decorrelated parameters. + * + * Output: + * -out : correlated parameters. + */ +WebRtc_Word16 WebRtcIsac_CorrelateLpcGain( + const double* data, + double* out); + + +/****************************************************************************** + * WebRtcIsac_AddMeanToLinearDomain() + * + * This is the inverse of WebRtcIsac_ToLogDomainRemoveMean(). + * + * Input: + * -lpcGain : LPC gain in log-domain & mean removed + * + * Output: + * -lpcGain : LPC gain in normal domain. + */ +WebRtc_Word16 WebRtcIsac_AddMeanToLinearDomain( + double* lpcGains); + + +#endif // WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_ENCODE_LPC_SWB_H_ diff --git a/src/mod/codecs/mod_iSAC/energy.c b/src/mod/codecs/mod_iSAC/energy.c new file mode 100644 index 0000000000..e8fdf94e03 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/energy.c @@ -0,0 +1,36 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + + +/* + * This file contains the function WebRtcSpl_Energy(). + * The description header can be found in signal_processing_library.h + * + */ + +#include "signal_processing_library.h" + +WebRtc_Word32 WebRtcSpl_Energy(WebRtc_Word16* vector, int vector_length, int* scale_factor) +{ + WebRtc_Word32 en = 0; + int i; + int scaling = WebRtcSpl_GetScalingSquare(vector, vector_length, vector_length); + int looptimes = vector_length; + WebRtc_Word16 *vectorptr = vector; + + for (i = 0; i < looptimes; i++) + { + en += WEBRTC_SPL_MUL_16_16_RSFT(*vectorptr, *vectorptr, scaling); + vectorptr++; + } + *scale_factor = scaling; + + return en; +} diff --git a/src/mod/codecs/mod_iSAC/entropy_coding.c b/src/mod/codecs/mod_iSAC/entropy_coding.c new file mode 100644 index 0000000000..a7299447f1 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/entropy_coding.c @@ -0,0 +1,2748 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * entropy_coding.c + * + * This header file defines all of the functions used to arithmetically + * encode the iSAC bistream + * + */ + + +#include "entropy_coding.h" +#include "settings.h" +#include "arith_routines.h" +#include "signal_processing_library.h" +#include "spectrum_ar_model_tables.h" +#include "lpc_tables.h" +#include "pitch_gain_tables.h" +#include "pitch_lag_tables.h" +#include "encode_lpc_swb.h" +#include "lpc_shape_swb12_tables.h" +#include "lpc_shape_swb16_tables.h" +#include "lpc_gain_swb_tables.h" +#include "os_specific_inline.h" + +#include +#include + +static const WebRtc_UWord16 kLpcVecPerSegmentUb12 = 5; +static const WebRtc_UWord16 kLpcVecPerSegmentUb16 = 4; + +/* coefficients for the stepwise rate estimation */ +static const WebRtc_Word32 kRPointsQ10[100] = { + 14495, 14295, 14112, 13944, 13788, 13643, 13459, 13276, 13195, 13239, + 13243, 13191, 13133, 13216, 13263, 13330, 13316, 13242, 13191, 13106, + 12942, 12669, 12291, 11840, 11361, 10795, 10192, 9561, 8934, 8335, + 7750, 7161, 6589, 6062, 5570, 5048, 4548, 4069, 3587, 3143, + 2717, 2305, 1915, 1557, 1235, 963, 720, 541, 423, 366, + 369, 435, 561, 750, 1001, 1304, 1626, 1989, 2381, 2793, + 3219, 3656, 4134, 4612, 5106, 5629, 6122, 6644, 7216, 7801, + 8386, 8987, 9630, 10255, 10897, 11490, 11950, 12397, 12752, 12999, + 13175, 13258, 13323, 13290, 13296, 13335, 13113, 13255, 13347, 13355, + 13298, 13247, 13313, 13155, 13267, 13313, 13374, 13446, 13525, 13609}; + + +/* cdf array for encoder bandwidth (12 vs 16 kHz) indicator */ +static const WebRtc_UWord16 kOneBitEqualProbCdf[3] = { + 0, 32768, 65535 }; + +/* pointer to cdf array for encoder bandwidth (12 vs 16 kHz) indicator */ +static const WebRtc_UWord16 *kOneBitEqualProbCdf_ptr[1] = { + kOneBitEqualProbCdf }; + +/* initial cdf index for decoder of encoded bandwidth (12 vs 16 kHz) indicator */ +static const WebRtc_UWord16 kOneBitEqualProbInitIndex[1] = {1}; + + +/* coefficients for the stepwise rate estimation */ + + +static const WebRtc_Word32 acnQ10 = 426; +static const WebRtc_Word32 bcnQ10 = -581224; +static const WebRtc_Word32 ccnQ10 = 722631; +static const WebRtc_Word32 lbcnQ10 = -402874; +#define DPMIN_Q10 -10240 // -10.00 in Q10 +#define DPMAX_Q10 10240 // 10.00 in Q10 +#define MINBITS_Q10 10240 /* 10.0 in Q10 */ +#define IS_SWB_12KHZ 1 + +__inline WebRtc_UWord32 stepwise(WebRtc_Word32 dinQ10) { + + WebRtc_Word32 ind, diQ10, dtQ10; + + diQ10 = dinQ10; + if (diQ10 < DPMIN_Q10) + diQ10 = DPMIN_Q10; + if (diQ10 >= DPMAX_Q10) + diQ10 = DPMAX_Q10 - 1; + + dtQ10 = diQ10 - DPMIN_Q10; /* Q10 + Q10 = Q10 */ + ind = (dtQ10 * 5) >> 10; /* 2^10 / 5 = 0.2 in Q10 */ + /* Q10 -> Q0 */ + + return kRPointsQ10[ind]; +} + + +__inline short log2_Q10_B( int x ) +{ + int zeros; + short frac; + + zeros = WebRtcSpl_NormU32( x ); + frac = ((unsigned int)(x << zeros) & 0x7FFFFFFF) >> 21; + return (short) (((31 - zeros) << 10) + frac); +} + + + +/* compute correlation from power spectrum */ +static void WebRtcIsac_FindCorrelation(WebRtc_Word32 *PSpecQ12, WebRtc_Word32 *CorrQ7) +{ + WebRtc_Word32 summ[FRAMESAMPLES/8]; + WebRtc_Word32 diff[FRAMESAMPLES/8]; + const WebRtc_Word16 *CS_ptrQ9; + WebRtc_Word32 sum; + int k, n; + + for (k = 0; k < FRAMESAMPLES/8; k++) { + summ[k] = (PSpecQ12[k] + PSpecQ12[FRAMESAMPLES_QUARTER-1 - k] + 16) >> 5; + diff[k] = (PSpecQ12[k] - PSpecQ12[FRAMESAMPLES_QUARTER-1 - k] + 16) >> 5; + } + + sum = 2; + for (n = 0; n < FRAMESAMPLES/8; n++) + sum += summ[n]; + CorrQ7[0] = sum; + + for (k = 0; k < AR_ORDER; k += 2) { + sum = 0; + CS_ptrQ9 = WebRtcIsac_kCos[k]; + for (n = 0; n < FRAMESAMPLES/8; n++) + sum += (CS_ptrQ9[n] * diff[n] + 256) >> 9; + CorrQ7[k+1] = sum; + } + + for (k=1; k> 9; + CorrQ7[k+1] = sum; + } +} + +/* compute inverse AR power spectrum */ +/* Changed to the function used in iSAC FIX for compatibility reasons */ +static void WebRtcIsac_FindInvArSpec(const WebRtc_Word16 *ARCoefQ12, + const WebRtc_Word32 gainQ10, + WebRtc_Word32 *CurveQ16) +{ + WebRtc_Word32 CorrQ11[AR_ORDER+1]; + WebRtc_Word32 sum, tmpGain; + WebRtc_Word32 diffQ16[FRAMESAMPLES/8]; + const WebRtc_Word16 *CS_ptrQ9; + int k, n; + WebRtc_Word16 round, shftVal = 0, sh; + + sum = 0; + for (n = 0; n < AR_ORDER+1; n++) + sum += WEBRTC_SPL_MUL(ARCoefQ12[n], ARCoefQ12[n]); /* Q24 */ + sum = WEBRTC_SPL_RSHIFT_W32(WEBRTC_SPL_MUL(WEBRTC_SPL_RSHIFT_W32(sum, 6), 65) + 32768, 16); /* result in Q8 */ + CorrQ11[0] = WEBRTC_SPL_RSHIFT_W32(WEBRTC_SPL_MUL(sum, gainQ10) + 256, 9); + + /* To avoid overflow, we shift down gainQ10 if it is large. We will not lose any precision */ + if(gainQ10>400000){ + tmpGain = WEBRTC_SPL_RSHIFT_W32(gainQ10, 3); + round = 32; + shftVal = 6; + } else { + tmpGain = gainQ10; + round = 256; + shftVal = 9; + } + + for (k = 1; k < AR_ORDER+1; k++) { + sum = 16384; + for (n = k; n < AR_ORDER+1; n++) + sum += WEBRTC_SPL_MUL(ARCoefQ12[n-k], ARCoefQ12[n]); /* Q24 */ + sum = WEBRTC_SPL_RSHIFT_W32(sum, 15); + CorrQ11[k] = WEBRTC_SPL_RSHIFT_W32(WEBRTC_SPL_MUL(sum, tmpGain) + round, shftVal); + } + sum = WEBRTC_SPL_LSHIFT_W32(CorrQ11[0], 7); + for (n = 0; n < FRAMESAMPLES/8; n++) + CurveQ16[n] = sum; + + for (k = 1; k < AR_ORDER; k += 2) { + //CS_ptrQ9 = WebRtcIsac_kCos[k]; + for (n = 0; n < FRAMESAMPLES/8; n++) + CurveQ16[n] += WEBRTC_SPL_RSHIFT_W32( + WEBRTC_SPL_MUL(WebRtcIsac_kCos[k][n], CorrQ11[k+1]) + 2, 2); + } + + CS_ptrQ9 = WebRtcIsac_kCos[0]; + + /* If CorrQ11[1] too large we avoid getting overflow in the calculation by shifting */ + sh=WebRtcSpl_NormW32(CorrQ11[1]); + if (CorrQ11[1]==0) /* Use next correlation */ + sh=WebRtcSpl_NormW32(CorrQ11[2]); + + if (sh<9) + shftVal = 9 - sh; + else + shftVal = 0; + + for (n = 0; n < FRAMESAMPLES/8; n++) + diffQ16[n] = WEBRTC_SPL_RSHIFT_W32(WEBRTC_SPL_MUL(CS_ptrQ9[n], WEBRTC_SPL_RSHIFT_W32(CorrQ11[1], shftVal)) + 2, 2); + for (k = 2; k < AR_ORDER; k += 2) { + CS_ptrQ9 = WebRtcIsac_kCos[k]; + for (n = 0; n < FRAMESAMPLES/8; n++) + diffQ16[n] += WEBRTC_SPL_RSHIFT_W32(WEBRTC_SPL_MUL(CS_ptrQ9[n], WEBRTC_SPL_RSHIFT_W32(CorrQ11[k+1], shftVal)) + 2, 2); + } + + for (k=0; k>25); // * 128/4294967295 + + /* new random unsigned int */ + seed = (seed * 196314165) + 907633515; + + /* fixed-point dither sample between -64 and 64 */ + dither2_Q7 = (WebRtc_Word16)(((int)seed + 16777216)>>25); + + shft = (seed >> 25) & 15; + if (shft < 5) + { + bufQ7[k] = dither1_Q7; + bufQ7[k+1] = dither2_Q7; + bufQ7[k+2] = 0; + } + else if (shft < 10) + { + bufQ7[k] = dither1_Q7; + bufQ7[k+1] = 0; + bufQ7[k+2] = dither2_Q7; + } + else + { + bufQ7[k] = 0; + bufQ7[k+1] = dither1_Q7; + bufQ7[k+2] = dither2_Q7; + } + } + } + else + { + dither_gain_Q14 = (WebRtc_Word16)(22528 - 10 * AvgPitchGain_Q12); + + /* dither on half of the coefficients */ + for (k = 0; k < length-1; k += 2) + { + /* new random unsigned int */ + seed = (seed * 196314165) + 907633515; + + /* fixed-point dither sample between -64 and 64 */ + dither1_Q7 = (WebRtc_Word16)(((int)seed + 16777216)>>25); + + /* dither sample is placed in either even or odd index */ + shft = (seed >> 25) & 1; /* either 0 or 1 */ + + bufQ7[k + shft] = (((dither_gain_Q14 * dither1_Q7) + 8192)>>14); + bufQ7[k + 1 - shft] = 0; + } + } +} + + + +/****************************************************************************** + * GenerateDitherQ7LbUB() + * + * generate array of dither samples in Q7 There are less zeros in dither + * vector compared to GenerateDitherQ7Lb. + * + * A uniform random number generator with the range of [-64 64] is employed + * but the generated dithers are scaled by 0.35, a heuristic scaling. + * + * Input: + * -seed : the initial seed for the random number generator. + * -length : the number of dither values to be generated. + * + * Output: + * -bufQ7 : pointer to a buffer where dithers are written to. + */ +static void GenerateDitherQ7LbUB( + WebRtc_Word16 *bufQ7, + WebRtc_UWord32 seed, + int length) +{ + int k; + for (k = 0; k < length; k++) { + /* new random unsigned int */ + seed = (seed * 196314165) + 907633515; + + /* fixed-point dither sample between -64 and 64 (Q7) */ + // * 128/4294967295 + bufQ7[k] = (WebRtc_Word16)(((int)seed + 16777216)>>25); + + // scale by 0.35 + bufQ7[k] = (WebRtc_Word16)WEBRTC_SPL_MUL_16_16_RSFT(bufQ7[k], + 2048, 13); + } +} + + + +/* + * function to decode the complex spectrum from the bit stream + * returns the total number of bytes in the stream + */ +int WebRtcIsac_DecodeSpecLb(Bitstr *streamdata, + double *fr, + double *fi, + WebRtc_Word16 AvgPitchGain_Q12) +{ + WebRtc_Word16 DitherQ7[FRAMESAMPLES]; + WebRtc_Word16 data[FRAMESAMPLES]; + WebRtc_Word32 invARSpec2_Q16[FRAMESAMPLES_QUARTER]; + WebRtc_UWord16 invARSpecQ8[FRAMESAMPLES_QUARTER]; + WebRtc_Word16 ARCoefQ12[AR_ORDER+1]; + WebRtc_Word16 RCQ15[AR_ORDER]; + WebRtc_Word16 gainQ10; + WebRtc_Word32 gain2_Q10, res; + WebRtc_Word32 in_sqrt; + WebRtc_Word32 newRes; + int k, len, i; + + /* create dither signal */ + GenerateDitherQ7Lb(DitherQ7, streamdata->W_upper, FRAMESAMPLES, AvgPitchGain_Q12); + + /* decode model parameters */ + if (WebRtcIsac_DecodeRc(streamdata, RCQ15) < 0) + return -ISAC_RANGE_ERROR_DECODE_SPECTRUM; + + WebRtcSpl_ReflCoefToLpc(RCQ15, AR_ORDER, ARCoefQ12); + + if (WebRtcIsac_DecodeGain2(streamdata, &gain2_Q10) < 0) + return -ISAC_RANGE_ERROR_DECODE_SPECTRUM; + + /* compute inverse AR power spectrum */ + WebRtcIsac_FindInvArSpec(ARCoefQ12, gain2_Q10, invARSpec2_Q16); + + /* convert to magnitude spectrum, by doing square-roots (modified from SPLIB) */ + res = 1 << (WebRtcSpl_GetSizeInBits(invARSpec2_Q16[0]) >> 1); + for (k = 0; k < FRAMESAMPLES_QUARTER; k++) + { + in_sqrt = invARSpec2_Q16[k]; + i = 10; + + /* Negative values make no sense for a real sqrt-function. */ + if (in_sqrt<0) + in_sqrt=-in_sqrt; + + newRes = (in_sqrt / res + res) >> 1; + do + { + res = newRes; + newRes = (in_sqrt / res + res) >> 1; + } while (newRes != res && i-- > 0); + + invARSpecQ8[k] = (WebRtc_Word16)newRes; + } + + /* arithmetic decoding of spectrum */ + if ((len = WebRtcIsac_DecLogisticMulti2(data, streamdata, invARSpecQ8, DitherQ7, + FRAMESAMPLES, !IS_SWB_12KHZ)) <1) + return -ISAC_RANGE_ERROR_DECODE_SPECTRUM; + + /* subtract dither and scale down spectral samples with low SNR */ + if (AvgPitchGain_Q12 <= 614) + { + for (k = 0; k < FRAMESAMPLES; k += 4) + { + gainQ10 = WebRtcSpl_DivW32W16ResW16(30 << 10, + (WebRtc_Word16)((invARSpec2_Q16[k>>2] + (32768 + (33 << 16))) >> 16)); + *fr++ = (double)((data[ k ] * gainQ10 + 512) >> 10) / 128.0; + *fi++ = (double)((data[k+1] * gainQ10 + 512) >> 10) / 128.0; + *fr++ = (double)((data[k+2] * gainQ10 + 512) >> 10) / 128.0; + *fi++ = (double)((data[k+3] * gainQ10 + 512) >> 10) / 128.0; + } + } + else + { + for (k = 0; k < FRAMESAMPLES; k += 4) + { + gainQ10 = WebRtcSpl_DivW32W16ResW16(36 << 10, + (WebRtc_Word16)((invARSpec2_Q16[k>>2] + (32768 + (40 << 16))) >> 16)); + *fr++ = (double)((data[ k ] * gainQ10 + 512) >> 10) / 128.0; + *fi++ = (double)((data[k+1] * gainQ10 + 512) >> 10) / 128.0; + *fr++ = (double)((data[k+2] * gainQ10 + 512) >> 10) / 128.0; + *fi++ = (double)((data[k+3] * gainQ10 + 512) >> 10) / 128.0; + } + } + + return len; +} + +/****************************************************************************** + * WebRtcIsac_DecodeSpecUB16() + * Decode real and imaginary part of the DFT coefficients, given a bit-stream. + * This function is called when the codec is in 0-16 kHz bandwidth. + * The decoded DFT coefficient can be transformed to time domain by + * WebRtcIsac_Time2Spec(). + * + * Input: + * - streamdata : pointer to a stucture containg the encoded + * data and theparameters needed for entropy + * coding. + * + * Output: + * -*fr : pointer to a buffer where the real part of DFT + * coefficients are written to. + * -*fi : pointer to a buffer where the imaginary part + * of DFT coefficients are written to. + * + * Return value : < 0 if an error occures + * 0 if succeeded. + */ +int WebRtcIsac_DecodeSpecUB16( + Bitstr* streamdata, + double* fr, + double* fi) +{ + WebRtc_Word16 DitherQ7[FRAMESAMPLES]; + WebRtc_Word16 data[FRAMESAMPLES]; + WebRtc_Word32 invARSpec2_Q16[FRAMESAMPLES_QUARTER]; + WebRtc_UWord16 invARSpecQ8[FRAMESAMPLES_QUARTER]; + WebRtc_Word16 ARCoefQ12[AR_ORDER+1]; + WebRtc_Word16 RCQ15[AR_ORDER]; + WebRtc_Word32 gain2_Q10, res; + WebRtc_Word32 in_sqrt; + WebRtc_Word32 newRes; + int k, len, i, j; + + /* create dither signal */ + GenerateDitherQ7LbUB(DitherQ7, streamdata->W_upper, FRAMESAMPLES); + + /* decode model parameters */ + if (WebRtcIsac_DecodeRc(streamdata, RCQ15) < 0) + return -ISAC_RANGE_ERROR_DECODE_SPECTRUM; + + WebRtcSpl_ReflCoefToLpc(RCQ15, AR_ORDER, ARCoefQ12); + + if (WebRtcIsac_DecodeGain2(streamdata, &gain2_Q10) < 0) + return -ISAC_RANGE_ERROR_DECODE_SPECTRUM; + + /* compute inverse AR power spectrum */ + WebRtcIsac_FindInvArSpec(ARCoefQ12, gain2_Q10, invARSpec2_Q16); + + /* convert to magnitude spectrum, by doing square-roots (modified from SPLIB) */ + res = 1 << (WebRtcSpl_GetSizeInBits(invARSpec2_Q16[0]) >> 1); + for (k = 0; k < FRAMESAMPLES_QUARTER; k++) + { + in_sqrt = invARSpec2_Q16[k]; + i = 10; + + /* Negative values make no sense for a real sqrt-function. */ + if (in_sqrt<0) + in_sqrt=-in_sqrt; + + newRes = (in_sqrt / res + res) >> 1; + do + { + res = newRes; + newRes = (in_sqrt / res + res) >> 1; + } while (newRes != res && i-- > 0); + + invARSpecQ8[k] = (WebRtc_Word16)newRes; + } + + /* arithmetic decoding of spectrum */ + if ((len = WebRtcIsac_DecLogisticMulti2(data, streamdata, invARSpecQ8, + DitherQ7, FRAMESAMPLES, !IS_SWB_12KHZ)) <1) + return -ISAC_RANGE_ERROR_DECODE_SPECTRUM; + + /* re-arrange DFT coefficients and scale down */ + for (j = 0, k = 0; k < FRAMESAMPLES; k += 4, j++) + { + fr[j] = (double)data[ k ] / 128.0; + fi[j] = (double)data[k+1] / 128.0; + fr[(FRAMESAMPLES_HALF) - 1 - j] = (double)data[k+2] / 128.0; + fi[(FRAMESAMPLES_HALF) - 1 - j] = (double)data[k+3] / 128.0; + + } + return len; +} + + + + +/****************************************************************************** + * WebRtcIsac_DecodeSpecUB12() + * Decode real and imaginary part of the DFT coefficients, given a bit-stream. + * This function is called when the codec is in 0-12 kHz bandwidth. + * The decoded DFT coefficient can be transformed to time domain by + * WebRtcIsac_Time2Spec(). + * + * Input: + * - streamdata : pointer to a stucture containg the encoded + * data and theparameters needed for entropy + * coding. + * + * Output: + * -*fr : pointer to a buffer where the real part of DFT + * coefficients are written to. + * -*fi : pointer to a buffer where the imaginary part + * of DFT coefficients are written to. + * + * Return value : < 0 if an error occures + * 0 if succeeded. + */ +int WebRtcIsac_DecodeSpecUB12( + Bitstr *streamdata, + double *fr, + double *fi) +{ + WebRtc_Word16 DitherQ7[FRAMESAMPLES]; + WebRtc_Word16 data[FRAMESAMPLES]; + WebRtc_Word32 invARSpec2_Q16[FRAMESAMPLES_QUARTER]; + WebRtc_UWord16 invARSpecQ8[FRAMESAMPLES_QUARTER]; + WebRtc_Word16 ARCoefQ12[AR_ORDER+1]; + WebRtc_Word16 RCQ15[AR_ORDER]; + WebRtc_Word32 gain2_Q10; + WebRtc_Word32 res; + WebRtc_Word32 in_sqrt; + WebRtc_Word32 newRes; + int k, len, i; + + /* create dither signal */ + GenerateDitherQ7LbUB(DitherQ7, streamdata->W_upper, FRAMESAMPLES); + + /* decode model parameters */ + if (WebRtcIsac_DecodeRc(streamdata, RCQ15) < 0) + return -ISAC_RANGE_ERROR_DECODE_SPECTRUM; + + WebRtcSpl_ReflCoefToLpc(RCQ15, AR_ORDER, ARCoefQ12); + + if (WebRtcIsac_DecodeGain2(streamdata, &gain2_Q10) < 0) + return -ISAC_RANGE_ERROR_DECODE_SPECTRUM; + + + /* compute inverse AR power spectrum */ + WebRtcIsac_FindInvArSpec(ARCoefQ12, gain2_Q10, invARSpec2_Q16); + + /* convert to magnitude spectrum, by doing square-roots (modified from SPLIB) */ + res = 1 << (WebRtcSpl_GetSizeInBits(invARSpec2_Q16[0]) >> 1); + for (k = 0; k < FRAMESAMPLES_QUARTER; k++) + { + in_sqrt = invARSpec2_Q16[k]; + i = 10; + + /* Negative values make no sense for a real sqrt-function. */ + if (in_sqrt<0) + in_sqrt=-in_sqrt; + + newRes = (in_sqrt / res + res) >> 1; + do + { + res = newRes; + newRes = (in_sqrt / res + res) >> 1; + } while (newRes != res && i-- > 0); + + invARSpecQ8[k] = (WebRtc_Word16)newRes; + } + + /* arithmetic decoding of spectrum */ + if ((len = WebRtcIsac_DecLogisticMulti2(data, streamdata, + invARSpecQ8, DitherQ7, (FRAMESAMPLES_HALF), IS_SWB_12KHZ)) < 1) + { + return -ISAC_RANGE_ERROR_DECODE_SPECTRUM; + } + + for (k = 0, i = 0; k < FRAMESAMPLES_HALF; k += 4) + { + fr[i] = (double)data[ k ] / 128.0; + fi[i] = (double)data[k+1] / 128.0; + i++; + fr[i] = (double)data[k+2] / 128.0; + fi[i] = (double)data[k+3] / 128.0; + i++; + } + + // The second half of real and imaginary coefficients is zero. This is + // due to using the old FFT module which requires two signals as input + // while in 0-12 kHz mode we only have 8-12 kHz band, and the second signal + // is set to zero + memset(&fr[FRAMESAMPLES_QUARTER], 0, FRAMESAMPLES_QUARTER * sizeof(double)); + memset(&fi[FRAMESAMPLES_QUARTER], 0, FRAMESAMPLES_QUARTER * sizeof(double)); + + return len; +} + + + + + +int WebRtcIsac_EncodeSpecLb(const WebRtc_Word16 *fr, + const WebRtc_Word16 *fi, + Bitstr *streamdata, + WebRtc_Word16 AvgPitchGain_Q12) +{ + WebRtc_Word16 ditherQ7[FRAMESAMPLES]; + WebRtc_Word16 dataQ7[FRAMESAMPLES]; + WebRtc_Word32 PSpec[FRAMESAMPLES_QUARTER]; + WebRtc_Word32 invARSpec2_Q16[FRAMESAMPLES_QUARTER]; + WebRtc_UWord16 invARSpecQ8[FRAMESAMPLES_QUARTER]; + WebRtc_Word32 CorrQ7[AR_ORDER+1]; + WebRtc_Word32 CorrQ7_norm[AR_ORDER+1]; + WebRtc_Word16 RCQ15[AR_ORDER]; + WebRtc_Word16 ARCoefQ12[AR_ORDER+1]; + WebRtc_Word32 gain2_Q10; + WebRtc_Word16 val; + WebRtc_Word32 nrg, res; + WebRtc_UWord32 sum; + WebRtc_Word32 in_sqrt; + WebRtc_Word32 newRes; + WebRtc_Word16 err; + WebRtc_UWord32 nrg_u32; + int shift_var; + int k, n, j, i; + + + /* create dither_float signal */ + GenerateDitherQ7Lb(ditherQ7, streamdata->W_upper, FRAMESAMPLES, AvgPitchGain_Q12); + + /* add dither and quantize, and compute power spectrum */ + for (k = 0; k < FRAMESAMPLES; k += 4) + { + val = ((*fr++ + ditherQ7[k] + 64) & 0xFF80) - ditherQ7[k]; + dataQ7[k] = val; + sum = val * val; + + val = ((*fi++ + ditherQ7[k+1] + 64) & 0xFF80) - ditherQ7[k+1]; + dataQ7[k+1] = val; + sum += val * val; + + val = ((*fr++ + ditherQ7[k+2] + 64) & 0xFF80) - ditherQ7[k+2]; + dataQ7[k+2] = val; + sum += val * val; + + val = ((*fi++ + ditherQ7[k+3] + 64) & 0xFF80) - ditherQ7[k+3]; + dataQ7[k+3] = val; + sum += val * val; + + PSpec[k>>2] = sum >> 2; + } + + /* compute correlation from power spectrum */ + WebRtcIsac_FindCorrelation(PSpec, CorrQ7); + + + /* find AR coefficients */ + /* number of bit shifts to 14-bit normalize CorrQ7[0] (leaving room for sign) */ + shift_var = WebRtcSpl_NormW32(CorrQ7[0]) - 18; + + if (shift_var > 0) { + for (k=0; k> (-shift_var); + } + } + + /* find RC coefficients */ + WebRtcSpl_AutoCorrToReflCoef(CorrQ7_norm, AR_ORDER, RCQ15); + + /* quantize & code RC Coefficient */ + WebRtcIsac_EncodeRc(RCQ15, streamdata); + + /* RC -> AR coefficients */ + WebRtcSpl_ReflCoefToLpc(RCQ15, AR_ORDER, ARCoefQ12); + + /* compute ARCoef' * Corr * ARCoef in Q19 */ + nrg = 0; + for (j = 0; j <= AR_ORDER; j++) { + for (n = 0; n <= j; n++) { + nrg += ( ARCoefQ12[j] * ((CorrQ7_norm[j-n] * ARCoefQ12[n] + 256) >> 9) + 4 ) >> 3; + } + for (n = j+1; n <= AR_ORDER; n++) { + nrg += ( ARCoefQ12[j] * ((CorrQ7_norm[n-j] * ARCoefQ12[n] + 256) >> 9) + 4 ) >> 3; + } + } + + nrg_u32 = (WebRtc_UWord32)nrg; + if (shift_var > 0) { + nrg_u32 = nrg_u32 >> shift_var; + } else { + nrg_u32 = nrg_u32 << (-shift_var); + } + + if (nrg_u32 > 0x7FFFFFFF) + nrg = 0x7FFFFFFF; + else + nrg = (WebRtc_Word32)nrg_u32; + + gain2_Q10 = WebRtcSpl_DivResultInQ31(FRAMESAMPLES_QUARTER, nrg); /* also shifts 31 bits to the left! */ + + /* quantize & code gain2_Q10 */ + if (WebRtcIsac_EncodeGain2(&gain2_Q10, streamdata)) { + return -1; + } + + /* compute inverse AR power spectrum */ + WebRtcIsac_FindInvArSpec(ARCoefQ12, gain2_Q10, invARSpec2_Q16); + + /* convert to magnitude spectrum, by doing square-roots (modified from SPLIB) */ + res = 1 << (WebRtcSpl_GetSizeInBits(invARSpec2_Q16[0]) >> 1); + for (k = 0; k < FRAMESAMPLES_QUARTER; k++) + { + in_sqrt = invARSpec2_Q16[k]; + i = 10; + + /* Negative values make no sense for a real sqrt-function. */ + if (in_sqrt<0) + in_sqrt=-in_sqrt; + + newRes = (in_sqrt / res + res) >> 1; + do + { + res = newRes; + newRes = (in_sqrt / res + res) >> 1; + } while (newRes != res && i-- > 0); + + invARSpecQ8[k] = (WebRtc_Word16)newRes; + } + + /* arithmetic coding of spectrum */ + err = WebRtcIsac_EncLogisticMulti2(streamdata, dataQ7, invARSpecQ8, + FRAMESAMPLES, !IS_SWB_12KHZ); + if (err < 0) + { + return (err); + } + + return 0; +} + + +/****************************************************************************** + * WebRtcIsac_EncodeSpecUB16() + * Quantize and encode real and imaginary part of the DFT coefficients. + * This function is called when the codec is in 0-16 kHz bandwidth. + * The real and imaginary part are computed by calling WebRtcIsac_Time2Spec(). + * + * + * Input: + * -*fr : pointer to a buffer where the real part of DFT + * coefficients are stored. + * -*fi : pointer to a buffer where the imaginary part + * of DFT coefficients are stored. + * + * Output: + * - streamdata : pointer to a stucture containg the encoded + * data and theparameters needed for entropy + * coding. + * + * Return value : < 0 if an error occures + * 0 if succeeded. + */ +int WebRtcIsac_EncodeSpecUB16( + const WebRtc_Word16* fr, + const WebRtc_Word16* fi, + Bitstr* streamdata) +{ + WebRtc_Word16 ditherQ7[FRAMESAMPLES]; + WebRtc_Word16 dataQ7[FRAMESAMPLES]; + WebRtc_Word32 PSpec[FRAMESAMPLES_QUARTER]; + WebRtc_Word32 invARSpec2_Q16[FRAMESAMPLES_QUARTER]; + WebRtc_UWord16 invARSpecQ8[FRAMESAMPLES_QUARTER]; + WebRtc_Word32 CorrQ7[AR_ORDER+1]; + WebRtc_Word32 CorrQ7_norm[AR_ORDER+1]; + WebRtc_Word16 RCQ15[AR_ORDER]; + WebRtc_Word16 ARCoefQ12[AR_ORDER+1]; + WebRtc_Word32 gain2_Q10; + WebRtc_Word16 val; + WebRtc_Word32 nrg, res; + WebRtc_UWord32 sum; + WebRtc_Word32 in_sqrt; + WebRtc_Word32 newRes; + WebRtc_Word16 err; + WebRtc_UWord32 nrg_u32; + int shift_var; + int k, n, j, i; + + /* create dither_float signal */ + GenerateDitherQ7LbUB(ditherQ7, streamdata->W_upper, FRAMESAMPLES); + + /* add dither and quantize, and compute power spectrum */ + for (j = 0, k = 0; k < FRAMESAMPLES; k += 4, j++) + { + val = ((fr[j] + ditherQ7[k] + 64) & 0xFF80) - ditherQ7[k]; + dataQ7[k] = val; + sum = val * val; + + val = ((fi[j] + ditherQ7[k+1] + 64) & 0xFF80) - ditherQ7[k+1]; + dataQ7[k+1] = val; + sum += val * val; + + val = ((fr[(FRAMESAMPLES_HALF) - 1 - j] + ditherQ7[k+2] + 64) & + 0xFF80) - ditherQ7[k+2]; + dataQ7[k+2] = val; + sum += val * val; + + val = ((fi[(FRAMESAMPLES_HALF) - 1 - j] + ditherQ7[k+3] + 64) & + 0xFF80) - ditherQ7[k+3]; + dataQ7[k+3] = val; + sum += val * val; + + PSpec[k>>2] = sum >> 2; + } + + /* compute correlation from power spectrum */ + WebRtcIsac_FindCorrelation(PSpec, CorrQ7); + + + /* find AR coefficients + number of bit shifts to 14-bit normalize CorrQ7[0] + (leaving room for sign) */ + shift_var = WebRtcSpl_NormW32(CorrQ7[0]) - 18; + + if (shift_var > 0) { + for (k=0; k> (-shift_var); + } + } + + /* find RC coefficients */ + WebRtcSpl_AutoCorrToReflCoef(CorrQ7_norm, AR_ORDER, RCQ15); + + /* quantize & code RC Coef */ + WebRtcIsac_EncodeRc(RCQ15, streamdata); + + /* RC -> AR coefficients */ + WebRtcSpl_ReflCoefToLpc(RCQ15, AR_ORDER, ARCoefQ12); + + /* compute ARCoef' * Corr * ARCoef in Q19 */ + nrg = 0; + for (j = 0; j <= AR_ORDER; j++) { + for (n = 0; n <= j; n++) { + nrg += ( ARCoefQ12[j] * ((CorrQ7_norm[j-n] * ARCoefQ12[n] + + 256) >> 9) + 4 ) >> 3; + } + for (n = j+1; n <= AR_ORDER; n++) { + nrg += ( ARCoefQ12[j] * ((CorrQ7_norm[n-j] * ARCoefQ12[n] + + 256) >> 9) + 4 ) >> 3; + } + } + nrg_u32 = (WebRtc_UWord32)nrg; + if (shift_var > 0) { + nrg_u32 = nrg_u32 >> shift_var; + } else { + nrg_u32 = nrg_u32 << (-shift_var); + } + + if (nrg_u32 > 0x7FFFFFFF) + nrg = 0x7FFFFFFF; + else + nrg = (WebRtc_Word32)nrg_u32; + + gain2_Q10 = WebRtcSpl_DivResultInQ31(FRAMESAMPLES_QUARTER, nrg); /* also shifts 31 bits to the left! */ + + /* quantize & code gain2_Q10 */ + if (WebRtcIsac_EncodeGain2(&gain2_Q10, streamdata)) { + return -1; + } + + /* compute inverse AR power spectrum */ + WebRtcIsac_FindInvArSpec(ARCoefQ12, gain2_Q10, invARSpec2_Q16); + + /* convert to magnitude spectrum, by doing square-roots (modified from SPLIB) */ + res = 1 << (WebRtcSpl_GetSizeInBits(invARSpec2_Q16[0]) >> 1); + for (k = 0; k < FRAMESAMPLES_QUARTER; k++) + { + in_sqrt = invARSpec2_Q16[k]; + i = 10; + + /* Negative values make no sense for a real sqrt-function. */ + if (in_sqrt<0) + in_sqrt=-in_sqrt; + + newRes = (in_sqrt / res + res) >> 1; + do + { + res = newRes; + newRes = (in_sqrt / res + res) >> 1; + } while (newRes != res && i-- > 0); + + invARSpecQ8[k] = (WebRtc_Word16)newRes; + } + + /* arithmetic coding of spectrum */ + err = WebRtcIsac_EncLogisticMulti2(streamdata, dataQ7, invARSpecQ8, + FRAMESAMPLES, !IS_SWB_12KHZ); + if (err < 0) + { + return (err); + } + + return 0; +} + + + + +int WebRtcIsac_EncodeSpecUB12(const WebRtc_Word16 *fr, + const WebRtc_Word16 *fi, + Bitstr *streamdata) +{ + WebRtc_Word16 ditherQ7[FRAMESAMPLES]; + WebRtc_Word16 dataQ7[FRAMESAMPLES]; + WebRtc_Word32 PSpec[FRAMESAMPLES_QUARTER]; + WebRtc_Word32 invARSpec2_Q16[FRAMESAMPLES_QUARTER]; + WebRtc_UWord16 invARSpecQ8[FRAMESAMPLES_QUARTER]; + WebRtc_Word32 CorrQ7[AR_ORDER+1]; + WebRtc_Word32 CorrQ7_norm[AR_ORDER+1]; + WebRtc_Word16 RCQ15[AR_ORDER]; + WebRtc_Word16 ARCoefQ12[AR_ORDER+1]; + WebRtc_Word32 gain2_Q10; + WebRtc_Word16 val; + WebRtc_Word32 nrg, res; + WebRtc_UWord32 sum; + WebRtc_Word32 in_sqrt; + WebRtc_Word32 newRes; + WebRtc_Word16 err; + int shift_var; + int k, n, j, i; + WebRtc_UWord32 nrg_u32; + + /* create dither_float signal */ + GenerateDitherQ7LbUB(ditherQ7, streamdata->W_upper, FRAMESAMPLES); + + /* add dither and quantize, and compute power spectrum */ + for (k = 0, j = 0; k < (FRAMESAMPLES_HALF); k += 4) + { + val = ((*fr++ + ditherQ7[k] + 64) & 0xFF80) - ditherQ7[k]; + dataQ7[k] = val; + sum = (val) * (val); + + val = ((*fi++ + ditherQ7[k+1] + 64) & 0xFF80) - ditherQ7[k+1]; + dataQ7[k+1] = val; + sum += (val) * (val); + + if(j < FRAMESAMPLES_QUARTER) + { + PSpec[j] = sum >> 1; + j++; + } + + val = ((*fr++ + ditherQ7[k+2] + 64) & 0xFF80) - ditherQ7[k+2]; + dataQ7[k+2] = val; + sum = (val) * (val); + + val = ((*fi++ + ditherQ7[k+3] + 64) & 0xFF80) - ditherQ7[k+3]; + dataQ7[k+3] = val; + sum += (val) * (val); + + if(j < FRAMESAMPLES_QUARTER) + { + PSpec[j] = sum >> 1; + j++; + } + } + /* compute correlation from power spectrum */ + WebRtcIsac_FindCorrelation(PSpec, CorrQ7); + + + /* find AR coefficients */ + /* number of bit shifts to 14-bit normalize CorrQ7[0] (leaving room for sign) */ + shift_var = WebRtcSpl_NormW32(CorrQ7[0]) - 18; + + if (shift_var > 0) { + for (k=0; k> (-shift_var); + } + } + + /* find RC coefficients */ + WebRtcSpl_AutoCorrToReflCoef(CorrQ7_norm, AR_ORDER, RCQ15); + + /* quantize & code RC Coef */ + WebRtcIsac_EncodeRc(RCQ15, streamdata); + + + /* RC -> AR coefficients */ + WebRtcSpl_ReflCoefToLpc(RCQ15, AR_ORDER, ARCoefQ12); + + + /* compute ARCoef' * Corr * ARCoef in Q19 */ + nrg = 0; + for (j = 0; j <= AR_ORDER; j++) { + for (n = 0; n <= j; n++) { + nrg += ( ARCoefQ12[j] * ((CorrQ7_norm[j-n] * ARCoefQ12[n] + 256) >> 9) + 4 ) >> 3; + } + for (n = j+1; n <= AR_ORDER; n++) { + nrg += ( ARCoefQ12[j] * ((CorrQ7_norm[n-j] * ARCoefQ12[n] + 256) >> 9) + 4 ) >> 3; + } + } + + nrg_u32 = (WebRtc_UWord32)nrg; + if (shift_var > 0) { + nrg_u32 = nrg_u32 >> shift_var; + } else { + nrg_u32 = nrg_u32 << (-shift_var); + } + + if (nrg_u32 > 0x7FFFFFFF) { + nrg = 0x7FFFFFFF; + } else { + nrg = (WebRtc_Word32)nrg_u32; + } + + gain2_Q10 = WebRtcSpl_DivResultInQ31(FRAMESAMPLES_QUARTER, nrg); /* also shifts 31 bits to the left! */ + + /* quantize & code gain2_Q10 */ + if (WebRtcIsac_EncodeGain2(&gain2_Q10, streamdata)) { + return -1; + } + + /* compute inverse AR power spectrum */ + WebRtcIsac_FindInvArSpec(ARCoefQ12, gain2_Q10, invARSpec2_Q16); + + /* convert to magnitude spectrum, by doing square-roots (modified from SPLIB) */ + res = 1 << (WebRtcSpl_GetSizeInBits(invARSpec2_Q16[0]) >> 1); + for (k = 0; k < FRAMESAMPLES_QUARTER; k++) + { + in_sqrt = invARSpec2_Q16[k]; + i = 10; + + /* Negative values make no sense for a real sqrt-function. */ + if (in_sqrt<0) + in_sqrt=-in_sqrt; + + newRes = (in_sqrt / res + res) >> 1; + do + { + res = newRes; + newRes = (in_sqrt / res + res) >> 1; + } while (newRes != res && i-- > 0); + + invARSpecQ8[k] = (WebRtc_Word16)newRes; + } + + /* arithmetic coding of spectrum */ + err = WebRtcIsac_EncLogisticMulti2(streamdata, dataQ7, invARSpecQ8, + (FRAMESAMPLES_HALF), IS_SWB_12KHZ); + if (err < 0) + { + return (err); + } + + return 0; +} + + + +/* step-up */ +void WebRtcIsac_Rc2Poly(double *RC, int N, double *a) +{ + int m, k; + double tmp[MAX_AR_MODEL_ORDER]; + + a[0] = 1.0; + tmp[0] = 1.0; + for (m=1; m<=N; m++) { + /* copy */ + for (k=1; k0; m--) { + tmp_inv = 1.0 / (1.0 - RC[m]*RC[m]); + for (k=1; k<=m; k++) + tmp[k] = (a[k] - RC[m] * a[m-k+1]) * tmp_inv; + + for (k=1; k WebRtcIsac_kQKltMaxIndGain[k]) + index_g[k] = WebRtcIsac_kQKltMaxIndGain[k]; + index_ovr_g[k] = WebRtcIsac_kQKltOffsetGain[bmodel][k]+index_g[k]; + pos = WebRtcIsac_kQKltOfLevelsGain[bmodel] + index_ovr_g[k]; + + /* determine number of bits */ + sum = WebRtcIsac_kQKltCodeLenGain[pos]; + Bits += sum; + } + + for (k=0; k WebRtcIsac_kQKltMaxIndShape[k]) + index_s[k] = WebRtcIsac_kQKltMaxIndShape[k]; + index_ovr_s[k] = WebRtcIsac_kQKltOffsetShape[bmodel][k]+index_s[k]; + pos = WebRtcIsac_kQKltOfLevelsShape[bmodel] + index_ovr_s[k]; + sum = WebRtcIsac_kQKltCodeLenShape[pos]; + Bits += sum; + } + + + /* Only one model remains in this version of the code, model = 0 */ + *model=bmodel; + *size=Bits; + + /* entropy coding of model number */ + WebRtcIsac_EncHistMulti(streamdata, model, WebRtcIsac_kQKltModelCdfPtr, 1); + + /* entropy coding of quantization indices - shape only */ + WebRtcIsac_EncHistMulti(streamdata, index_s, WebRtcIsac_kQKltCdfPtrShape[bmodel], KLT_ORDER_SHAPE); + + /* Save data for creation of multiple bit streams */ + encData->LPCmodel[encData->startIdx] = 0; + for (k=0; kLPCindex_s[KLT_ORDER_SHAPE*encData->startIdx + k] = index_s[k]; + } + + /* find quantization levels for shape coefficients */ + for (k=0; kLPCcoeffs_lo[(ORDERLO+1)*SUBFRAMES*encData->startIdx + k] = LPCCoef_lo[k]; + } + for (k=0; k<(ORDERHI+1)*SUBFRAMES; k++) { + encData->LPCcoeffs_hi[(ORDERHI+1)*SUBFRAMES*encData->startIdx + k] = LPCCoef_hi[k]; + } +} + + +WebRtc_Word16 +WebRtcIsac_EncodeLpcUB( + double* lpcVecs, + Bitstr* streamdata, + double* interpolLPCCoeff, + WebRtc_Word16 bandwidth, + ISACUBSaveEncDataStruct* encData) +{ + + double U[UB_LPC_ORDER * UB16_LPC_VEC_PER_FRAME]; + int idx[UB_LPC_ORDER * UB16_LPC_VEC_PER_FRAME]; + int interpolCntr; + + WebRtcIsac_Poly2LarUB(lpcVecs, bandwidth); + WebRtcIsac_RemoveLarMean(lpcVecs, bandwidth); + WebRtcIsac_DecorrelateIntraVec(lpcVecs, U, bandwidth); + WebRtcIsac_DecorrelateInterVec(U, lpcVecs, bandwidth); + WebRtcIsac_QuantizeUncorrLar(lpcVecs, idx, bandwidth); + + WebRtcIsac_CorrelateInterVec(lpcVecs, U, bandwidth); + WebRtcIsac_CorrelateIntraVec(U, lpcVecs, bandwidth); + WebRtcIsac_AddLarMean(lpcVecs, bandwidth); + + switch(bandwidth) + { + case isac12kHz: + { + // Stor the indices to be used for multiple encoding. + memcpy(encData->indexLPCShape, idx, UB_LPC_ORDER * UB_LPC_VEC_PER_FRAME * + sizeof(int)); + WebRtcIsac_EncHistMulti(streamdata, idx, WebRtcIsac_kLpcShapeCdfMatUb12, + UB_LPC_ORDER * UB_LPC_VEC_PER_FRAME); + for(interpolCntr = 0; interpolCntr < UB_INTERPOL_SEGMENTS; interpolCntr++) + { + WebRtcIsac_Lar2PolyInterpolUB(lpcVecs, + interpolLPCCoeff, kLpcVecPerSegmentUb12 + 1); + lpcVecs += UB_LPC_ORDER; + interpolLPCCoeff += (kLpcVecPerSegmentUb12 * (UB_LPC_ORDER + 1)); + } + break; + } + case isac16kHz: + { + // Stor the indices to be used for multiple encoding. + memcpy(encData->indexLPCShape, idx, UB_LPC_ORDER * UB16_LPC_VEC_PER_FRAME * + sizeof(int)); + WebRtcIsac_EncHistMulti(streamdata, idx, WebRtcIsac_kLpcShapeCdfMatUb16, + UB_LPC_ORDER * UB16_LPC_VEC_PER_FRAME); + for(interpolCntr = 0; interpolCntr < UB16_INTERPOL_SEGMENTS; interpolCntr++) + { + WebRtcIsac_Lar2PolyInterpolUB(lpcVecs, + interpolLPCCoeff, kLpcVecPerSegmentUb16 + 1); + lpcVecs += UB_LPC_ORDER; + interpolLPCCoeff += (kLpcVecPerSegmentUb16 * (UB_LPC_ORDER + 1)); + } + break; + } + default: + return -1; + } + return 0; +} + +void WebRtcIsac_EncodeLpcGainLb(double *LPCCoef_lo, double *LPCCoef_hi, int model, Bitstr *streamdata, ISAC_SaveEncData_t* encData) { + + int j, k, n, pos, pos2, posg, offsg, offs2; + int index_g[KLT_ORDER_GAIN]; + int index_ovr_g[KLT_ORDER_GAIN]; + double tmpcoeffs_g[KLT_ORDER_GAIN]; + double tmpcoeffs2_g[KLT_ORDER_GAIN]; + double sum; + + /* log gains, mean removal and scaling */ + posg = 0; + for (k=0; k WebRtcIsac_kQKltMaxIndGain[k]) { + index_g[k] = WebRtcIsac_kQKltMaxIndGain[k]; + } + index_ovr_g[k] = WebRtcIsac_kQKltOffsetGain[model][k]+index_g[k]; + + /* find quantization levels for coefficients */ + tmpcoeffs_g[WebRtcIsac_kQKltSelIndGain[k]] = WebRtcIsac_kQKltLevelsGain[WebRtcIsac_kQKltOfLevelsGain[model]+index_ovr_g[k]]; + + /* Save data for creation of multiple bit streams */ + encData->LPCindex_g[KLT_ORDER_GAIN*encData->startIdx + k] = index_g[k]; + } + + + /* entropy coding of quantization indices - gain */ + WebRtcIsac_EncHistMulti(streamdata, index_g, WebRtcIsac_kQKltCdfPtrGain[model], KLT_ORDER_GAIN); + + /* find quantization levels for coefficients */ + + /* left transform */ + offsg = 0; + posg = 0; + for (j=0; j WebRtcIsac_kQArBoundaryLevels[index[k]]) + { + while (RCQ15[k] > WebRtcIsac_kQArBoundaryLevels[index[k] + 1]) + index[k]++; + } + else + { + while (RCQ15[k] < WebRtcIsac_kQArBoundaryLevels[--index[k]]) ; + } + + RCQ15[k] = *(WebRtcIsac_kQArRcLevelsPtr[k] + index[k]); + } + + + /* entropy coding of quantization indices */ + WebRtcIsac_EncHistMulti(streamdata, index, WebRtcIsac_kQArRcCdfPtr, AR_ORDER); +} + + +/* decode & dequantize squared Gain */ +int WebRtcIsac_DecodeGain2(Bitstr *streamdata, WebRtc_Word32 *gainQ10) +{ + int index, err; + + /* entropy decoding of quantization index */ + err = WebRtcIsac_DecHistOneStepMulti(&index, streamdata, WebRtcIsac_kQGainCdf_ptr, + WebRtcIsac_kQGainInitIndex, 1); + if (err<0) // error check + return err; + + /* find quantization level */ + *gainQ10 = WebRtcIsac_kQGain2Levels[index]; + + return 0; +} + + + +/* quantize & code squared Gain */ +int WebRtcIsac_EncodeGain2(WebRtc_Word32 *gainQ10, Bitstr *streamdata) +{ + int index; + + + /* find quantization index */ + index = WebRtcIsac_kQGainInitIndex[0]; + if (*gainQ10 > WebRtcIsac_kQGain2BoundaryLevels[index]) + { + while (*gainQ10 > WebRtcIsac_kQGain2BoundaryLevels[index + 1]) + index++; + } + else + { + while (*gainQ10 < WebRtcIsac_kQGain2BoundaryLevels[--index]) ; + } + + /* dequantize */ + *gainQ10 = WebRtcIsac_kQGain2Levels[index]; + + + /* entropy coding of quantization index */ + WebRtcIsac_EncHistMulti(streamdata, &index, WebRtcIsac_kQGainCdf_ptr, 1); + + return 0; +} + + +/* code and decode Pitch Gains and Lags functions */ + +/* decode & dequantize Pitch Gains */ +int WebRtcIsac_DecodePitchGain(Bitstr *streamdata, WebRtc_Word16 *PitchGains_Q12) +{ + int index_comb, err; + const WebRtc_UWord16 *WebRtcIsac_kQPitchGainCdf_ptr[1]; + + /* entropy decoding of quantization indices */ + *WebRtcIsac_kQPitchGainCdf_ptr = WebRtcIsac_kQPitchGainCdf; + err = WebRtcIsac_DecHistBisectMulti(&index_comb, streamdata, WebRtcIsac_kQPitchGainCdf_ptr, WebRtcIsac_kQCdfTableSizeGain, 1); + /* error check, Q_mean_Gain.. tables are of size 144 */ + if ((err<0) || (index_comb<0) || (index_comb>144)) + return -ISAC_RANGE_ERROR_DECODE_PITCH_GAIN; + + /* unquantize back to pitch gains by table look-up */ + PitchGains_Q12[0] = WebRtcIsac_kQMeanGain1Q12[index_comb]; + PitchGains_Q12[1] = WebRtcIsac_kQMeanGain2Q12[index_comb]; + PitchGains_Q12[2] = WebRtcIsac_kQMeanGain3Q12[index_comb]; + PitchGains_Q12[3] = WebRtcIsac_kQMeanGain4Q12[index_comb]; + + return 0; +} + + +/* quantize & code Pitch Gains */ +void WebRtcIsac_EncodePitchGain(WebRtc_Word16 *PitchGains_Q12, Bitstr *streamdata, ISAC_SaveEncData_t* encData) +{ + int k,j; + double C; + double S[PITCH_SUBFRAMES]; + int index[3]; + int index_comb; + const WebRtc_UWord16 *WebRtcIsac_kQPitchGainCdf_ptr[1]; + double PitchGains[PITCH_SUBFRAMES] = {0,0,0,0}; + + /* take the asin */ + for (k=0; k WebRtcIsac_kIndexUpperLimitGain[k]) index[k] = WebRtcIsac_kIndexUpperLimitGain[k]; + index[k] -= WebRtcIsac_kIndexLowerLimitGain[k]; + } + + /* calculate unique overall index */ + index_comb = WebRtcIsac_kIndexMultsGain[0] * index[0] + WebRtcIsac_kIndexMultsGain[1] * index[1] + index[2]; + + /* unquantize back to pitch gains by table look-up */ + PitchGains_Q12[0] = WebRtcIsac_kQMeanGain1Q12[index_comb]; + PitchGains_Q12[1] = WebRtcIsac_kQMeanGain2Q12[index_comb]; + PitchGains_Q12[2] = WebRtcIsac_kQMeanGain3Q12[index_comb]; + PitchGains_Q12[3] = WebRtcIsac_kQMeanGain4Q12[index_comb]; + + /* entropy coding of quantization pitch gains */ + *WebRtcIsac_kQPitchGainCdf_ptr = WebRtcIsac_kQPitchGainCdf; + WebRtcIsac_EncHistMulti(streamdata, &index_comb, WebRtcIsac_kQPitchGainCdf_ptr, 1); + encData->pitchGain_index[encData->startIdx] = index_comb; + +} + + + +/* Pitch LAG */ + + +/* decode & dequantize Pitch Lags */ +int WebRtcIsac_DecodePitchLag(Bitstr *streamdata, WebRtc_Word16 *PitchGain_Q12, double *PitchLags) +{ + int k, err; + double StepSize; + double C; + int index[PITCH_SUBFRAMES]; + double mean_gain; + const double *mean_val2, *mean_val3, *mean_val4; + const WebRtc_Word16 *lower_limit; + const WebRtc_UWord16 *init_index; + const WebRtc_UWord16 *cdf_size; + const WebRtc_UWord16 **cdf; + + //(Y) + double PitchGain[4]={0,0,0,0}; + // + + /* compute mean pitch gain */ + mean_gain = 0.0; + for (k = 0; k < 4; k++) + { + //(Y) + PitchGain[k] = ((float)PitchGain_Q12[k])/4096; + //(Y) + mean_gain += PitchGain[k]; + } + mean_gain /= 4.0; + + /* voicing classificiation */ + if (mean_gain < 0.2) { + StepSize = WebRtcIsac_kQPitchLagStepsizeLo; + cdf = WebRtcIsac_kQPitchLagCdfPtrLo; + cdf_size = WebRtcIsac_kQPitchLagCdfSizeLo; + mean_val2 = WebRtcIsac_kQMeanLag2Lo; + mean_val3 = WebRtcIsac_kQMeanLag3Lo; + mean_val4 = WebRtcIsac_kQMeanLag4Lo; + lower_limit = WebRtcIsac_kQIndexLowerLimitLagLo; + init_index = WebRtcIsac_kQInitIndexLagLo; + } else if (mean_gain < 0.4) { + StepSize = WebRtcIsac_kQPitchLagStepsizeMid; + cdf = WebRtcIsac_kQPitchLagCdfPtrMid; + cdf_size = WebRtcIsac_kQPitchLagCdfSizeMid; + mean_val2 = WebRtcIsac_kQMeanLag2Mid; + mean_val3 = WebRtcIsac_kQMeanLag3Mid; + mean_val4 = WebRtcIsac_kQMeanLag4Mid; + lower_limit = WebRtcIsac_kQIndexLowerLimitLagMid; + init_index = WebRtcIsac_kQInitIndexLagMid; + } else { + StepSize = WebRtcIsac_kQPitchLagStepsizeHi; + cdf = WebRtcIsac_kQPitchLagCdfPtrHi; + cdf_size = WebRtcIsac_kQPitchLagCdfSizeHi; + mean_val2 = WebRtcIsac_kQMeanLag2Hi; + mean_val3 = WebRtcIsac_kQMeanLag3Hi; + mean_val4 = WebRtcIsac_kQMeanLag4Hi; + lower_limit = WebRtcIsac_kQindexLowerLimitLagHi; + init_index = WebRtcIsac_kQInitIndexLagHi; + } + + /* entropy decoding of quantization indices */ + err = WebRtcIsac_DecHistBisectMulti(index, streamdata, cdf, cdf_size, 1); + if ((err<0) || (index[0]<0)) // error check + return -ISAC_RANGE_ERROR_DECODE_PITCH_LAG; + + err = WebRtcIsac_DecHistOneStepMulti(index+1, streamdata, cdf+1, init_index, 3); + if (err<0) // error check + return -ISAC_RANGE_ERROR_DECODE_PITCH_LAG; + + + /* unquantize back to transform coefficients and do the inverse transform: S = T'*C */ + C = (index[0] + lower_limit[0]) * StepSize; + for (k=0; kmeanGain[encData->startIdx] = mean_gain; + + /* voicing classification */ + if (mean_gain < 0.2) { + StepSize = WebRtcIsac_kQPitchLagStepsizeLo; + cdf = WebRtcIsac_kQPitchLagCdfPtrLo; + mean_val2 = WebRtcIsac_kQMeanLag2Lo; + mean_val3 = WebRtcIsac_kQMeanLag3Lo; + mean_val4 = WebRtcIsac_kQMeanLag4Lo; + lower_limit = WebRtcIsac_kQIndexLowerLimitLagLo; + upper_limit = WebRtcIsac_kQIndexUpperLimitLagLo; + } else if (mean_gain < 0.4) { + StepSize = WebRtcIsac_kQPitchLagStepsizeMid; + cdf = WebRtcIsac_kQPitchLagCdfPtrMid; + mean_val2 = WebRtcIsac_kQMeanLag2Mid; + mean_val3 = WebRtcIsac_kQMeanLag3Mid; + mean_val4 = WebRtcIsac_kQMeanLag4Mid; + lower_limit = WebRtcIsac_kQIndexLowerLimitLagMid; + upper_limit = WebRtcIsac_kQIndexUpperLimitLagMid; + } else { + StepSize = WebRtcIsac_kQPitchLagStepsizeHi; + cdf = WebRtcIsac_kQPitchLagCdfPtrHi; + mean_val2 = WebRtcIsac_kQMeanLag2Hi; + mean_val3 = WebRtcIsac_kQMeanLag3Hi; + mean_val4 = WebRtcIsac_kQMeanLag4Hi; + lower_limit = WebRtcIsac_kQindexLowerLimitLagHi; + upper_limit = WebRtcIsac_kQindexUpperLimitLagHi; + } + + + /* find quantization index */ + for (k=0; k<4; k++) + { + /* transform */ + C = 0.0; + for (j=0; j upper_limit[k]) index[k] = upper_limit[k]; + index[k] -= lower_limit[k]; + + /* Save data for creation of multiple bit streams */ + encData->pitchIndex[PITCH_SUBFRAMES*encData->startIdx + k] = index[k]; + } + + /* unquantize back to transform coefficients and do the inverse transform: S = T'*C */ + C = (index[0] + lower_limit[0]) * StepSize; + for (k=0; k WebRtcIsac_kQKltMaxIndGain[k]) { + index_g[k] = WebRtcIsac_kQKltMaxIndGain[k]; + } + index_ovr_g[k] = WebRtcIsac_kQKltOffsetGain[model][k]+index_g[k]; + + /* find quantization levels for coefficients */ + tmpcoeffs_g[WebRtcIsac_kQKltSelIndGain[k]] = WebRtcIsac_kQKltLevelsGain[WebRtcIsac_kQKltOfLevelsGain[model]+index_ovr_g[k]]; + } +} + + +/* decode & dequantize LPC Coef */ +int +WebRtcIsac_DecodeLpcCoefUB( + Bitstr* streamdata, + double* lpcVecs, + double* percepFilterGains, + WebRtc_Word16 bandwidth) +{ + int index_s[KLT_ORDER_SHAPE]; + + double U[UB_LPC_ORDER * UB16_LPC_VEC_PER_FRAME]; + int err; + + /* entropy decoding of quantization indices */ + switch(bandwidth) + { + case isac12kHz: + { + err = WebRtcIsac_DecHistOneStepMulti(index_s, streamdata, + WebRtcIsac_kLpcShapeCdfMatUb12, WebRtcIsac_kLpcShapeEntropySearchUb12, + UB_LPC_ORDER * UB_LPC_VEC_PER_FRAME); + break; + } + case isac16kHz: + { + err = WebRtcIsac_DecHistOneStepMulti(index_s, streamdata, + WebRtcIsac_kLpcShapeCdfMatUb16, WebRtcIsac_kLpcShapeEntropySearchUb16, + UB_LPC_ORDER * UB16_LPC_VEC_PER_FRAME); + break; + } + default: + return -1; + } + + if (err<0) // error check + { + return err; + } + + WebRtcIsac_DequantizeLpcParam(index_s, lpcVecs, bandwidth); + WebRtcIsac_CorrelateInterVec(lpcVecs, U, bandwidth); + WebRtcIsac_CorrelateIntraVec(U, lpcVecs, bandwidth); + WebRtcIsac_AddLarMean(lpcVecs, bandwidth); + + + WebRtcIsac_DecodeLpcGainUb(percepFilterGains, streamdata); + + if(bandwidth == isac16kHz) + { + // decode another set of Gains + WebRtcIsac_DecodeLpcGainUb(&percepFilterGains[SUBFRAMES], streamdata); + } + + return 0; +} + +WebRtc_Word16 +WebRtcIsac_EncodeBandwidth( + enum ISACBandwidth bandwidth, + Bitstr* streamData) +{ + int bandwidthMode; + switch(bandwidth) + { + case isac12kHz: + { + bandwidthMode = 0; + break; + } + case isac16kHz: + { + bandwidthMode = 1; + break; + } + default: + return -ISAC_DISALLOWED_ENCODER_BANDWIDTH; + } + + WebRtcIsac_EncHistMulti(streamData, &bandwidthMode, + kOneBitEqualProbCdf_ptr, 1); + return 0; +} + +WebRtc_Word16 +WebRtcIsac_DecodeBandwidth( + Bitstr* streamData, + enum ISACBandwidth* bandwidth) +{ + int bandwidthMode; + + if(WebRtcIsac_DecHistOneStepMulti(&bandwidthMode, streamData, + kOneBitEqualProbCdf_ptr, + kOneBitEqualProbInitIndex, 1) < 0) + { + // error check + return -ISAC_RANGE_ERROR_DECODE_BANDWITH; + } + + switch(bandwidthMode) + { + case 0: + { + *bandwidth = isac12kHz; + break; + } + case 1: + { + *bandwidth = isac16kHz; + break; + } + default: + return -ISAC_DISALLOWED_BANDWIDTH_MODE_DECODER; + } + return 0; +} + +WebRtc_Word16 +WebRtcIsac_EncodeJitterInfo( + WebRtc_Word32 jitterIndex, + Bitstr* streamData) +{ + // This is to avoid LINUX warning until we change 'int' to + // 'Word32' + int intVar; + + if((jitterIndex < 0) || (jitterIndex > 1)) + { + return -1; + } + intVar = (int)(jitterIndex); + // Use the same CDF table as for bandwidth + // both take two values with equal probability + WebRtcIsac_EncHistMulti(streamData, &intVar, + kOneBitEqualProbCdf_ptr, 1); + return 0; + +} + +WebRtc_Word16 +WebRtcIsac_DecodeJitterInfo( + Bitstr* streamData, + WebRtc_Word32* jitterInfo) +{ + int intVar; + + // Use the same CDF table as for bandwidth + // both take two values with equal probability + if(WebRtcIsac_DecHistOneStepMulti(&intVar, streamData, + kOneBitEqualProbCdf_ptr, + kOneBitEqualProbInitIndex, 1) < 0) + { + // error check + return -ISAC_RANGE_ERROR_DECODE_BANDWITH; + } + *jitterInfo = (WebRtc_Word16)(intVar); + return 0; +} diff --git a/src/mod/codecs/mod_iSAC/entropy_coding.h b/src/mod/codecs/mod_iSAC/entropy_coding.h new file mode 100644 index 0000000000..8446bcf3e5 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/entropy_coding.h @@ -0,0 +1,412 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * entropy_coding.h + * + * This header file declares all of the functions used to arithmetically + * encode the iSAC bistream + * + */ + +#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_ENTROPY_CODING_H_ +#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_ENTROPY_CODING_H_ + +#include "structs.h" + +/* decode complex spectrum (return number of bytes in stream) */ +int WebRtcIsac_DecodeSpecLb(Bitstr *streamdata, + double *fr, + double *fi, + WebRtc_Word16 AvgPitchGain_Q12); + +/****************************************************************************** + * WebRtcIsac_DecodeSpecUB16() + * Decode real and imaginary part of the DFT coefficients, given a bit-stream. + * This function is called when the codec is in 0-16 kHz bandwidth. + * The decoded DFT coefficient can be transformed to time domain by + * WebRtcIsac_Time2Spec(). + * + * Input: + * - streamdata : pointer to a stucture containg the encoded + * data and theparameters needed for entropy + * coding. + * + * Output: + * -*fr : pointer to a buffer where the real part of DFT + * coefficients are written to. + * -*fi : pointer to a buffer where the imaginary part + * of DFT coefficients are written to. + * + * Return value : < 0 if an error occures + * 0 if succeeded. + */ +int WebRtcIsac_DecodeSpecUB16( + Bitstr* streamdata, + double* fr, + double* fi); + + +/****************************************************************************** + * WebRtcIsac_DecodeSpecUB12() + * Decode real and imaginary part of the DFT coefficients, given a bit-stream. + * This function is called when the codec is in 0-12 kHz bandwidth. + * The decoded DFT coefficient can be transformed to time domain by + * WebRtcIsac_Time2Spec(). + * + * Input: + * - streamdata : pointer to a stucture containg the encoded + * data and theparameters needed for entropy + * coding. + * + * Output: + * -*fr : pointer to a buffer where the real part of DFT + * coefficients are written to. + * -*fi : pointer to a buffer where the imaginary part + * of DFT coefficients are written to. + * + * Return value : < 0 if an error occures + * 0 if succeeded. + */ +int WebRtcIsac_DecodeSpecUB12( + Bitstr* streamdata, + double* fr, + double* fi); + + +/* encode complex spectrum */ +int WebRtcIsac_EncodeSpecLb(const WebRtc_Word16* fr, + const WebRtc_Word16* fi, + Bitstr* streamdata, + WebRtc_Word16 AvgPitchGain_Q12); + + +/****************************************************************************** + * WebRtcIsac_EncodeSpecUB16() + * Quantize and encode real and imaginary part of the DFT coefficients. + * This function is called when the codec is in 0-16 kHz bandwidth. + * The real and imaginary part are computed by calling WebRtcIsac_Time2Spec(). + * + * + * Input: + * -*fr : pointer to a buffer where the real part of DFT + * coefficients are stored. + * -*fi : pointer to a buffer where the imaginary part + * of DFT coefficients are stored. + * + * Output: + * - streamdata : pointer to a stucture containg the encoded + * data and theparameters needed for entropy + * coding. + * + * Return value : < 0 if an error occures + * 0 if succeeded. + */ +int WebRtcIsac_EncodeSpecUB16( + const WebRtc_Word16* fr, + const WebRtc_Word16* fi, + Bitstr* streamdata); + + +/****************************************************************************** + * WebRtcIsac_EncodeSpecUB12() + * Quantize and encode real and imaginary part of the DFT coefficients. + * This function is called when the codec is in 0-12 kHz bandwidth. + * The real and imaginary part are computed by calling WebRtcIsac_Time2Spec(). + * + * + * Input: + * -*fr : pointer to a buffer where the real part of DFT + * coefficients are stored. + * -*fi : pointer to a buffer where the imaginary part + * of DFT coefficients are stored. + * + * Output: + * - streamdata : pointer to a stucture containg the encoded + * data and theparameters needed for entropy + * coding. + * + * Return value : < 0 if an error occures + * 0 if succeeded. + */ +int WebRtcIsac_EncodeSpecUB12( + const WebRtc_Word16* fr, + const WebRtc_Word16* fi, + Bitstr* streamdata); + + +/* decode & dequantize LPC Coef */ +int WebRtcIsac_DecodeLpcCoef(Bitstr *streamdata, double *LPCCoef, int *outmodel); +int WebRtcIsac_DecodeLpcCoefUB( + Bitstr* streamdata, + double* lpcVecs, + double* percepFilterGains, + WebRtc_Word16 bandwidth); + +int WebRtcIsac_DecodeLpc(Bitstr *streamdata, double *LPCCoef_lo, double *LPCCoef_hi, int *outmodel); + +/* quantize & code LPC Coef */ +void WebRtcIsac_EncodeLpcLb(double *LPCCoef_lo, double *LPCCoef_hi, int *model, double *size, Bitstr *streamdata, ISAC_SaveEncData_t* encData); +void WebRtcIsac_EncodeLpcGainLb(double *LPCCoef_lo, double *LPCCoef_hi, int model, Bitstr *streamdata, ISAC_SaveEncData_t* encData); + +/****************************************************************************** + * WebRtcIsac_EncodeLpcUB() + * Encode LPC parameters, given as A-polynomial, of upper-band. The encoding + * is performed in LAR domain. + * For the upper-band, we compute and encode LPC of some sub-frames, LPC of + * other sub-frames are computed by linear interpolation, in LAR domain. This + * function performs the interpolation and returns the LPC of all sub-frames. + * + * Inputs: + * - lpcCoef : a buffer containing A-polynomials of sub-frames + * (excluding first coefficient that is 1). + * - bandwidth : specifies if the codec is operating at 0-12 kHz + * or 0-16 kHz mode. + * + * Input/output: + * - streamdata : pointer to a stucture containg the encoded + * data and theparameters needed for entropy + * coding. + * + * Output: + * - interpolLPCCoeff : Decoded and interpolated LPC (A-polynomial) + * of all sub-frames. + * If LP analysis is of order K, and there are N + * sub-frames then this is a buffer of size + * (k + 1) * N, each vector starts with the LPC gain + * of the corresponding sub-frame. The LPC gains + * are encoded and inserted after this function is + * called. The first A-coefficient which is 1 is not + * included. + * + * Return value : 0 if encoding is successful, + * <0 if failed to encode. + */ +WebRtc_Word16 WebRtcIsac_EncodeLpcUB( + double* lpcCoeff, + Bitstr* streamdata, + double* interpolLPCCoeff, + WebRtc_Word16 bandwidth, + ISACUBSaveEncDataStruct* encData); + +/****************************************************************************** + * WebRtcIsac_DecodeInterpolLpcUb() + * Decode LPC coefficients and interpolate to get the coefficients fo all + * sub-frmaes. + * + * Inputs: + * - bandwidth : spepecifies if the codec is in 0-12 kHz or + * 0-16 kHz mode. + * + * Input/output: + * - streamdata : pointer to a stucture containg the encoded + * data and theparameters needed for entropy + * coding. + * + * Output: + * - percepFilterParam : Decoded and interpolated LPC (A-polynomial) of + * all sub-frames. + * If LP analysis is of order K, and there are N + * sub-frames then this is a buffer of size + * (k + 1) * N, each vector starts with the LPC gain + * of the corresponding sub-frame. The LPC gains + * are encoded and inserted after this function is + * called. The first A-coefficient which is 1 is not + * included. + * + * Return value : 0 if encoding is successful, + * <0 if failed to encode. + */ +WebRtc_Word16 WebRtcIsac_DecodeInterpolLpcUb( + Bitstr* streamdata, + double* percepFilterParam, + WebRtc_Word16 bandwidth); + +/* decode & dequantize RC */ +int WebRtcIsac_DecodeRc(Bitstr *streamdata, WebRtc_Word16 *RCQ15); + +/* quantize & code RC */ +void WebRtcIsac_EncodeRc(WebRtc_Word16 *RCQ15, Bitstr *streamdata); + +/* decode & dequantize squared Gain */ +int WebRtcIsac_DecodeGain2(Bitstr *streamdata, WebRtc_Word32 *Gain2); + +/* quantize & code squared Gain (input is squared gain) */ +int WebRtcIsac_EncodeGain2(WebRtc_Word32 *gain2, Bitstr *streamdata); + +void WebRtcIsac_EncodePitchGain(WebRtc_Word16* PitchGains_Q12, Bitstr* streamdata, ISAC_SaveEncData_t* encData); + +void WebRtcIsac_EncodePitchLag(double* PitchLags, WebRtc_Word16* PitchGain_Q12, Bitstr* streamdata, ISAC_SaveEncData_t* encData); + +int WebRtcIsac_DecodePitchGain(Bitstr *streamdata, WebRtc_Word16 *PitchGain_Q12); +int WebRtcIsac_DecodePitchLag(Bitstr *streamdata, WebRtc_Word16 *PitchGain_Q12, double *PitchLag); + +int WebRtcIsac_DecodeFrameLen(Bitstr *streamdata, WebRtc_Word16 *framelength); +int WebRtcIsac_EncodeFrameLen(WebRtc_Word16 framelength, Bitstr *streamdata); +int WebRtcIsac_DecodeSendBW(Bitstr *streamdata, WebRtc_Word16 *BWno); +void WebRtcIsac_EncodeReceiveBw(int *BWno, Bitstr *streamdata); + +/* step-down */ +void WebRtcIsac_Poly2Rc(double *a, int N, double *RC); + +/* step-up */ +void WebRtcIsac_Rc2Poly(double *RC, int N, double *a); + +void WebRtcIsac_TranscodeLPCCoef(double *LPCCoef_lo, double *LPCCoef_hi, int model, + int *index_g); + + +/****************************************************************************** + * WebRtcIsac_EncodeLpcGainUb() + * Encode LPC gains of sub-Frames. + * + * Input/outputs: + * - lpGains : a buffer which contains 'SUBFRAME' number of + * LP gains to be encoded. The input values are + * overwritten by the quantized values. + * - streamdata : pointer to a stucture containg the encoded + * data and theparameters needed for entropy + * coding. + * + * Output: + * - lpcGainIndex : quantization indices for lpc gains, these will + * be stored to be used for FEC. + */ +void WebRtcIsac_EncodeLpcGainUb( + double* lpGains, + Bitstr* streamdata, + int* lpcGainIndex); + + +/****************************************************************************** + * WebRtcIsac_EncodeLpcGainUb() + * Store LPC gains of sub-Frames in 'streamdata'. + * + * Input: + * - lpGains : a buffer which contains 'SUBFRAME' number of + * LP gains to be encoded. + * Input/outputs: + * - streamdata : pointer to a stucture containg the encoded + * data and theparameters needed for entropy + * coding. + * + */ +void WebRtcIsac_StoreLpcGainUb( + double* lpGains, + Bitstr* streamdata); + + +/****************************************************************************** + * WebRtcIsac_DecodeLpcGainUb() + * Decode the LPC gain of sub-frames. + * + * Input/output: + * - streamdata : pointer to a stucture containg the encoded + * data and theparameters needed for entropy + * coding. + * + * Output: + * - lpGains : a buffer where decoded LPC gians will be stored. + * + * Return value : 0 if succeeded. + * <0 if failed. + */ +WebRtc_Word16 WebRtcIsac_DecodeLpcGainUb( + double* lpGains, + Bitstr* streamdata); + + +/****************************************************************************** + * WebRtcIsac_EncodeBandwidth() + * Encode if the bandwidth of encoded audio is 0-12 kHz or 0-16 kHz. + * + * Input: + * - bandwidth : an enumerator specifying if the codec in is + * 0-12 kHz or 0-16 kHz mode. + * + * Input/output: + * - streamdata : pointer to a stucture containg the encoded + * data and theparameters needed for entropy + * coding. + * + * Return value : 0 if succeeded. + * <0 if failed. + */ +WebRtc_Word16 WebRtcIsac_EncodeBandwidth( + enum ISACBandwidth bandwidth, + Bitstr* streamData); + + +/****************************************************************************** + * WebRtcIsac_DecodeBandwidth() + * Decode the bandwidth of the encoded audio, i.e. if the bandwidth is 0-12 kHz + * or 0-16 kHz. + * + * Input/output: + * - streamdata : pointer to a stucture containg the encoded + * data and theparameters needed for entropy + * coding. + * + * Output: + * - bandwidth : an enumerator specifying if the codec is in + * 0-12 kHz or 0-16 kHz mode. + * + * Return value : 0 if succeeded. + * <0 if failed. + */ +WebRtc_Word16 WebRtcIsac_DecodeBandwidth( + Bitstr* streamData, + enum ISACBandwidth* bandwidth); + + +/****************************************************************************** + * WebRtcIsac_EncodeJitterInfo() + * Decode the jitter information. + * + * Input/output: + * - streamdata : pointer to a stucture containg the encoded + * data and theparameters needed for entropy + * coding. + * + * Input: + * - jitterInfo : one bit of info specifying if the channel is + * in high/low jitter. Zero indicates low jitter + * and one indicates high jitter. + * + * Return value : 0 if succeeded. + * <0 if failed. + */ +WebRtc_Word16 WebRtcIsac_EncodeJitterInfo( + WebRtc_Word32 jitterIndex, + Bitstr* streamData); + + +/****************************************************************************** + * WebRtcIsac_DecodeJitterInfo() + * Decode the jitter information. + * + * Input/output: + * - streamdata : pointer to a stucture containg the encoded + * data and theparameters needed for entropy + * coding. + * + * Output: + * - jitterInfo : one bit of info specifying if the channel is + * in high/low jitter. Zero indicates low jitter + * and one indicates high jitter. + * + * Return value : 0 if succeeded. + * <0 if failed. + */ +WebRtc_Word16 WebRtcIsac_DecodeJitterInfo( + Bitstr* streamData, + WebRtc_Word32* jitterInfo); + +#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_ENTROPY_CODING_H_ */ diff --git a/src/mod/codecs/mod_iSAC/fft.c b/src/mod/codecs/mod_iSAC/fft.c new file mode 100644 index 0000000000..c8247983aa --- /dev/null +++ b/src/mod/codecs/mod_iSAC/fft.c @@ -0,0 +1,947 @@ +/* + * Copyright(c)1995,97 Mark Olesen + * Queen's Univ at Kingston (Canada) + * + * Permission to use, copy, modify, and distribute this software for + * any purpose without fee is hereby granted, provided that this + * entire notice is included in all copies of any software which is + * or includes a copy or modification of this software and in all + * copies of the supporting documentation for such software. + * + * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR + * IMPLIED WARRANTY. IN PARTICULAR, NEITHER THE AUTHOR NOR QUEEN'S + * UNIVERSITY AT KINGSTON MAKES ANY REPRESENTATION OR WARRANTY OF ANY + * KIND CONCERNING THE MERCHANTABILITY OF THIS SOFTWARE OR ITS + * FITNESS FOR ANY PARTICULAR PURPOSE. + * + * All of which is to say that you can do what you like with this + * source code provided you don't try to sell it as your own and you + * include an unaltered copy of this message (including the + * copyright). + * + * It is also implicitly understood that bug fixes and improvements + * should make their way back to the general Internet community so + * that everyone benefits. + * + * Changes: + * Trivial type modifications by the WebRTC authors. + */ + + +/* + * File: + * WebRtcIsac_Fftn.c + * + * Public: + * WebRtcIsac_Fftn / fftnf (); + * + * Private: + * WebRtcIsac_Fftradix / fftradixf (); + * + * Descript: + * multivariate complex Fourier transform, computed in place + * using mixed-radix Fast Fourier Transform algorithm. + * + * Fortran code by: + * RC Singleton, Stanford Research Institute, Sept. 1968 + * + * translated by f2c (version 19950721). + * + * int WebRtcIsac_Fftn (int ndim, const int dims[], REAL Re[], REAL Im[], + * int iSign, double scaling); + * + * NDIM = the total number dimensions + * DIMS = a vector of array sizes + * if NDIM is zero then DIMS must be zero-terminated + * + * RE and IM hold the real and imaginary components of the data, and return + * the resulting real and imaginary Fourier coefficients. Multidimensional + * data *must* be allocated contiguously. There is no limit on the number + * of dimensions. + * + * ISIGN = the sign of the complex exponential (ie, forward or inverse FFT) + * the magnitude of ISIGN (normally 1) is used to determine the + * correct indexing increment (see below). + * + * SCALING = normalizing constant by which the final result is *divided* + * if SCALING == -1, normalize by total dimension of the transform + * if SCALING < -1, normalize by the square-root of the total dimension + * + * example: + * tri-variate transform with Re[n1][n2][n3], Im[n1][n2][n3] + * + * int dims[3] = {n1,n2,n3} + * WebRtcIsac_Fftn (3, dims, Re, Im, 1, scaling); + * + *-----------------------------------------------------------------------* + * int WebRtcIsac_Fftradix (REAL Re[], REAL Im[], size_t nTotal, size_t nPass, + * size_t nSpan, int iSign, size_t max_factors, + * size_t max_perm); + * + * RE, IM - see above documentation + * + * Although there is no limit on the number of dimensions, WebRtcIsac_Fftradix() must + * be called once for each dimension, but the calls may be in any order. + * + * NTOTAL = the total number of complex data values + * NPASS = the dimension of the current variable + * NSPAN/NPASS = the spacing of consecutive data values while indexing the + * current variable + * ISIGN - see above documentation + * + * example: + * tri-variate transform with Re[n1][n2][n3], Im[n1][n2][n3] + * + * WebRtcIsac_Fftradix (Re, Im, n1*n2*n3, n1, n1, 1, maxf, maxp); + * WebRtcIsac_Fftradix (Re, Im, n1*n2*n3, n2, n1*n2, 1, maxf, maxp); + * WebRtcIsac_Fftradix (Re, Im, n1*n2*n3, n3, n1*n2*n3, 1, maxf, maxp); + * + * single-variate transform, + * NTOTAL = N = NSPAN = (number of complex data values), + * + * WebRtcIsac_Fftradix (Re, Im, n, n, n, 1, maxf, maxp); + * + * The data can also be stored in a single array with alternating real and + * imaginary parts, the magnitude of ISIGN is changed to 2 to give correct + * indexing increment, and data [0] and data [1] used to pass the initial + * addresses for the sequences of real and imaginary values, + * + * example: + * REAL data [2*NTOTAL]; + * WebRtcIsac_Fftradix ( &data[0], &data[1], NTOTAL, nPass, nSpan, 2, maxf, maxp); + * + * for temporary allocation: + * + * MAX_FACTORS >= the maximum prime factor of NPASS + * MAX_PERM >= the number of prime factors of NPASS. In addition, + * if the square-free portion K of NPASS has two or more prime + * factors, then MAX_PERM >= (K-1) + * + * storage in FACTOR for a maximum of 15 prime factors of NPASS. if NPASS + * has more than one square-free factor, the product of the square-free + * factors must be <= 210 array storage for maximum prime factor of 23 the + * following two constants should agree with the array dimensions. + * + *----------------------------------------------------------------------*/ +#include "fft.h" + +#include +#include + + + +/* double precision routine */ +static int +WebRtcIsac_Fftradix (double Re[], double Im[], + size_t nTotal, size_t nPass, size_t nSpan, int isign, + int max_factors, unsigned int max_perm, + FFTstr *fftstate); + + + +#ifndef M_PI +# define M_PI 3.14159265358979323846264338327950288 +#endif + +#ifndef SIN60 +# define SIN60 0.86602540378443865 /* sin(60 deg) */ +# define COS72 0.30901699437494742 /* cos(72 deg) */ +# define SIN72 0.95105651629515357 /* sin(72 deg) */ +#endif + +# define REAL double +# define FFTN WebRtcIsac_Fftn +# define FFTNS "fftn" +# define FFTRADIX WebRtcIsac_Fftradix +# define FFTRADIXS "fftradix" + + +int WebRtcIsac_Fftns(unsigned int ndim, const int dims[], + double Re[], + double Im[], + int iSign, + double scaling, + FFTstr *fftstate) +{ + + size_t nSpan, nPass, nTotal; + unsigned int i; + int ret, max_factors, max_perm; + + /* + * tally the number of elements in the data array + * and determine the number of dimensions + */ + nTotal = 1; + if (ndim && dims [0]) + { + for (i = 0; i < ndim; i++) + { + if (dims [i] <= 0) + { + return -1; + } + nTotal *= dims [i]; + } + } + else + { + ndim = 0; + for (i = 0; dims [i]; i++) + { + if (dims [i] <= 0) + { + return -1; + } + nTotal *= dims [i]; + ndim++; + } + } + + /* determine maximum number of factors and permuations */ +#if 1 + /* + * follow John Beale's example, just use the largest dimension and don't + * worry about excess allocation. May be someone else will do it? + */ + max_factors = max_perm = 1; + for (i = 0; i < ndim; i++) + { + nSpan = dims [i]; + if ((int)nSpan > max_factors) + { + max_factors = (int)nSpan; + } + if ((int)nSpan > max_perm) + { + max_perm = (int)nSpan; + } + } +#else + /* use the constants used in the original Fortran code */ + max_factors = 23; + max_perm = 209; +#endif + /* loop over the dimensions: */ + nPass = 1; + for (i = 0; i < ndim; i++) + { + nSpan = dims [i]; + nPass *= nSpan; + ret = FFTRADIX (Re, Im, nTotal, nSpan, nPass, iSign, + max_factors, max_perm, fftstate); + /* exit, clean-up already done */ + if (ret) + return ret; + } + + /* Divide through by the normalizing constant: */ + if (scaling && scaling != 1.0) + { + if (iSign < 0) iSign = -iSign; + if (scaling < 0.0) + { + scaling = (double)nTotal; + if (scaling < -1.0) + scaling = sqrt (scaling); + } + scaling = 1.0 / scaling; /* multiply is often faster */ + for (i = 0; i < nTotal; i += iSign) + { + Re [i] *= scaling; + Im [i] *= scaling; + } + } + return 0; +} + +/* + * singleton's mixed radix routine + * + * could move allocation out to WebRtcIsac_Fftn(), but leave it here so that it's + * possible to make this a standalone function + */ + +static int FFTRADIX (REAL Re[], + REAL Im[], + size_t nTotal, + size_t nPass, + size_t nSpan, + int iSign, + int max_factors, + unsigned int max_perm, + FFTstr *fftstate) +{ + int ii, mfactor, kspan, ispan, inc; + int j, jc, jf, jj, k, k1, k2, k3, k4, kk, kt, nn, ns, nt; + + + REAL radf; + REAL c1, c2, c3, cd, aa, aj, ak, ajm, ajp, akm, akp; + REAL s1, s2, s3, sd, bb, bj, bk, bjm, bjp, bkm, bkp; + + REAL *Rtmp = NULL; /* temp space for real part*/ + REAL *Itmp = NULL; /* temp space for imaginary part */ + REAL *Cos = NULL; /* Cosine values */ + REAL *Sin = NULL; /* Sine values */ + + REAL s60 = SIN60; /* sin(60 deg) */ + REAL c72 = COS72; /* cos(72 deg) */ + REAL s72 = SIN72; /* sin(72 deg) */ + REAL pi2 = M_PI; /* use PI first, 2 PI later */ + + + fftstate->SpaceAlloced = 0; + fftstate->MaxPermAlloced = 0; + + + // initialize to avoid warnings + k3 = c2 = c3 = s2 = s3 = 0.0; + + if (nPass < 2) + return 0; + + /* allocate storage */ + if (fftstate->SpaceAlloced < max_factors * sizeof (REAL)) + { +#ifdef SUN_BROKEN_REALLOC + if (!fftstate->SpaceAlloced) /* first time */ + { + fftstate->SpaceAlloced = max_factors * sizeof (REAL); + } + else + { +#endif + fftstate->SpaceAlloced = max_factors * sizeof (REAL); +#ifdef SUN_BROKEN_REALLOC + } +#endif + } + else + { + /* allow full use of alloc'd space */ + max_factors = fftstate->SpaceAlloced / sizeof (REAL); + } + if (fftstate->MaxPermAlloced < max_perm) + { +#ifdef SUN_BROKEN_REALLOC + if (!fftstate->MaxPermAlloced) /* first time */ + else +#endif + fftstate->MaxPermAlloced = max_perm; + } + else + { + /* allow full use of alloc'd space */ + max_perm = fftstate->MaxPermAlloced; + } + if (fftstate->Tmp0 == NULL || fftstate->Tmp1 == NULL || fftstate->Tmp2 == NULL || fftstate->Tmp3 == NULL + || fftstate->Perm == NULL) { + return -1; + } + + /* assign pointers */ + Rtmp = (REAL *) fftstate->Tmp0; + Itmp = (REAL *) fftstate->Tmp1; + Cos = (REAL *) fftstate->Tmp2; + Sin = (REAL *) fftstate->Tmp3; + + /* + * Function Body + */ + inc = iSign; + if (iSign < 0) { + s72 = -s72; + s60 = -s60; + pi2 = -pi2; + inc = -inc; /* absolute value */ + } + + /* adjust for strange increments */ + nt = inc * (int)nTotal; + ns = inc * (int)nSpan; + kspan = ns; + + nn = nt - inc; + jc = ns / (int)nPass; + radf = pi2 * (double) jc; + pi2 *= 2.0; /* use 2 PI from here on */ + + ii = 0; + jf = 0; + /* determine the factors of n */ + mfactor = 0; + k = (int)nPass; + while (k % 16 == 0) { + mfactor++; + fftstate->factor [mfactor - 1] = 4; + k /= 16; + } + j = 3; + jj = 9; + do { + while (k % jj == 0) { + mfactor++; + fftstate->factor [mfactor - 1] = j; + k /= jj; + } + j += 2; + jj = j * j; + } while (jj <= k); + if (k <= 4) { + kt = mfactor; + fftstate->factor [mfactor] = k; + if (k != 1) + mfactor++; + } else { + if (k - (k / 4 << 2) == 0) { + mfactor++; + fftstate->factor [mfactor - 1] = 2; + k /= 4; + } + kt = mfactor; + j = 2; + do { + if (k % j == 0) { + mfactor++; + fftstate->factor [mfactor - 1] = j; + k /= j; + } + j = ((j + 1) / 2 << 1) + 1; + } while (j <= k); + } + if (kt) { + j = kt; + do { + mfactor++; + fftstate->factor [mfactor - 1] = fftstate->factor [j - 1]; + j--; + } while (j); + } + + /* test that mfactors is in range */ + if (mfactor > NFACTOR) + { + return -1; + } + + /* compute fourier transform */ + for (;;) { + sd = radf / (double) kspan; + cd = sin(sd); + cd = 2.0 * cd * cd; + sd = sin(sd + sd); + kk = 0; + ii++; + + switch (fftstate->factor [ii - 1]) { + case 2: + /* transform for factor of 2 (including rotation factor) */ + kspan /= 2; + k1 = kspan + 2; + do { + do { + k2 = kk + kspan; + ak = Re [k2]; + bk = Im [k2]; + Re [k2] = Re [kk] - ak; + Im [k2] = Im [kk] - bk; + Re [kk] += ak; + Im [kk] += bk; + kk = k2 + kspan; + } while (kk < nn); + kk -= nn; + } while (kk < jc); + if (kk >= kspan) + goto Permute_Results_Label; /* exit infinite loop */ + do { + c1 = 1.0 - cd; + s1 = sd; + do { + do { + do { + k2 = kk + kspan; + ak = Re [kk] - Re [k2]; + bk = Im [kk] - Im [k2]; + Re [kk] += Re [k2]; + Im [kk] += Im [k2]; + Re [k2] = c1 * ak - s1 * bk; + Im [k2] = s1 * ak + c1 * bk; + kk = k2 + kspan; + } while (kk < (nt-1)); + k2 = kk - nt; + c1 = -c1; + kk = k1 - k2; + } while (kk > k2); + ak = c1 - (cd * c1 + sd * s1); + s1 = sd * c1 - cd * s1 + s1; + c1 = 2.0 - (ak * ak + s1 * s1); + s1 *= c1; + c1 *= ak; + kk += jc; + } while (kk < k2); + k1 += inc + inc; + kk = (k1 - kspan + 1) / 2 + jc - 1; + } while (kk < (jc + jc)); + break; + + case 4: /* transform for factor of 4 */ + ispan = kspan; + kspan /= 4; + + do { + c1 = 1.0; + s1 = 0.0; + do { + do { + k1 = kk + kspan; + k2 = k1 + kspan; + k3 = k2 + kspan; + akp = Re [kk] + Re [k2]; + akm = Re [kk] - Re [k2]; + ajp = Re [k1] + Re [k3]; + ajm = Re [k1] - Re [k3]; + bkp = Im [kk] + Im [k2]; + bkm = Im [kk] - Im [k2]; + bjp = Im [k1] + Im [k3]; + bjm = Im [k1] - Im [k3]; + Re [kk] = akp + ajp; + Im [kk] = bkp + bjp; + ajp = akp - ajp; + bjp = bkp - bjp; + if (iSign < 0) { + akp = akm + bjm; + bkp = bkm - ajm; + akm -= bjm; + bkm += ajm; + } else { + akp = akm - bjm; + bkp = bkm + ajm; + akm += bjm; + bkm -= ajm; + } + /* avoid useless multiplies */ + if (s1 == 0.0) { + Re [k1] = akp; + Re [k2] = ajp; + Re [k3] = akm; + Im [k1] = bkp; + Im [k2] = bjp; + Im [k3] = bkm; + } else { + Re [k1] = akp * c1 - bkp * s1; + Re [k2] = ajp * c2 - bjp * s2; + Re [k3] = akm * c3 - bkm * s3; + Im [k1] = akp * s1 + bkp * c1; + Im [k2] = ajp * s2 + bjp * c2; + Im [k3] = akm * s3 + bkm * c3; + } + kk = k3 + kspan; + } while (kk < nt); + + c2 = c1 - (cd * c1 + sd * s1); + s1 = sd * c1 - cd * s1 + s1; + c1 = 2.0 - (c2 * c2 + s1 * s1); + s1 *= c1; + c1 *= c2; + /* values of c2, c3, s2, s3 that will get used next time */ + c2 = c1 * c1 - s1 * s1; + s2 = 2.0 * c1 * s1; + c3 = c2 * c1 - s2 * s1; + s3 = c2 * s1 + s2 * c1; + kk = kk - nt + jc; + } while (kk < kspan); + kk = kk - kspan + inc; + } while (kk < jc); + if (kspan == jc) + goto Permute_Results_Label; /* exit infinite loop */ + break; + + default: + /* transform for odd factors */ +#ifdef FFT_RADIX4 + return -1; + break; +#else /* FFT_RADIX4 */ + k = fftstate->factor [ii - 1]; + ispan = kspan; + kspan /= k; + + switch (k) { + case 3: /* transform for factor of 3 (optional code) */ + do { + do { + k1 = kk + kspan; + k2 = k1 + kspan; + ak = Re [kk]; + bk = Im [kk]; + aj = Re [k1] + Re [k2]; + bj = Im [k1] + Im [k2]; + Re [kk] = ak + aj; + Im [kk] = bk + bj; + ak -= 0.5 * aj; + bk -= 0.5 * bj; + aj = (Re [k1] - Re [k2]) * s60; + bj = (Im [k1] - Im [k2]) * s60; + Re [k1] = ak - bj; + Re [k2] = ak + bj; + Im [k1] = bk + aj; + Im [k2] = bk - aj; + kk = k2 + kspan; + } while (kk < (nn - 1)); + kk -= nn; + } while (kk < kspan); + break; + + case 5: /* transform for factor of 5 (optional code) */ + c2 = c72 * c72 - s72 * s72; + s2 = 2.0 * c72 * s72; + do { + do { + k1 = kk + kspan; + k2 = k1 + kspan; + k3 = k2 + kspan; + k4 = k3 + kspan; + akp = Re [k1] + Re [k4]; + akm = Re [k1] - Re [k4]; + bkp = Im [k1] + Im [k4]; + bkm = Im [k1] - Im [k4]; + ajp = Re [k2] + Re [k3]; + ajm = Re [k2] - Re [k3]; + bjp = Im [k2] + Im [k3]; + bjm = Im [k2] - Im [k3]; + aa = Re [kk]; + bb = Im [kk]; + Re [kk] = aa + akp + ajp; + Im [kk] = bb + bkp + bjp; + ak = akp * c72 + ajp * c2 + aa; + bk = bkp * c72 + bjp * c2 + bb; + aj = akm * s72 + ajm * s2; + bj = bkm * s72 + bjm * s2; + Re [k1] = ak - bj; + Re [k4] = ak + bj; + Im [k1] = bk + aj; + Im [k4] = bk - aj; + ak = akp * c2 + ajp * c72 + aa; + bk = bkp * c2 + bjp * c72 + bb; + aj = akm * s2 - ajm * s72; + bj = bkm * s2 - bjm * s72; + Re [k2] = ak - bj; + Re [k3] = ak + bj; + Im [k2] = bk + aj; + Im [k3] = bk - aj; + kk = k4 + kspan; + } while (kk < (nn-1)); + kk -= nn; + } while (kk < kspan); + break; + + default: + if (k != jf) { + jf = k; + s1 = pi2 / (double) k; + c1 = cos(s1); + s1 = sin(s1); + if (jf > max_factors){ + return -1; + } + Cos [jf - 1] = 1.0; + Sin [jf - 1] = 0.0; + j = 1; + do { + Cos [j - 1] = Cos [k - 1] * c1 + Sin [k - 1] * s1; + Sin [j - 1] = Cos [k - 1] * s1 - Sin [k - 1] * c1; + k--; + Cos [k - 1] = Cos [j - 1]; + Sin [k - 1] = -Sin [j - 1]; + j++; + } while (j < k); + } + do { + do { + k1 = kk; + k2 = kk + ispan; + ak = aa = Re [kk]; + bk = bb = Im [kk]; + j = 1; + k1 += kspan; + do { + k2 -= kspan; + j++; + Rtmp [j - 1] = Re [k1] + Re [k2]; + ak += Rtmp [j - 1]; + Itmp [j - 1] = Im [k1] + Im [k2]; + bk += Itmp [j - 1]; + j++; + Rtmp [j - 1] = Re [k1] - Re [k2]; + Itmp [j - 1] = Im [k1] - Im [k2]; + k1 += kspan; + } while (k1 < k2); + Re [kk] = ak; + Im [kk] = bk; + k1 = kk; + k2 = kk + ispan; + j = 1; + do { + k1 += kspan; + k2 -= kspan; + jj = j; + ak = aa; + bk = bb; + aj = 0.0; + bj = 0.0; + k = 1; + do { + k++; + ak += Rtmp [k - 1] * Cos [jj - 1]; + bk += Itmp [k - 1] * Cos [jj - 1]; + k++; + aj += Rtmp [k - 1] * Sin [jj - 1]; + bj += Itmp [k - 1] * Sin [jj - 1]; + jj += j; + if (jj > jf) { + jj -= jf; + } + } while (k < jf); + k = jf - j; + Re [k1] = ak - bj; + Im [k1] = bk + aj; + Re [k2] = ak + bj; + Im [k2] = bk - aj; + j++; + } while (j < k); + kk += ispan; + } while (kk < nn); + kk -= nn; + } while (kk < kspan); + break; + } + + /* multiply by rotation factor (except for factors of 2 and 4) */ + if (ii == mfactor) + goto Permute_Results_Label; /* exit infinite loop */ + kk = jc; + do { + c2 = 1.0 - cd; + s1 = sd; + do { + c1 = c2; + s2 = s1; + kk += kspan; + do { + do { + ak = Re [kk]; + Re [kk] = c2 * ak - s2 * Im [kk]; + Im [kk] = s2 * ak + c2 * Im [kk]; + kk += ispan; + } while (kk < nt); + ak = s1 * s2; + s2 = s1 * c2 + c1 * s2; + c2 = c1 * c2 - ak; + kk = kk - nt + kspan; + } while (kk < ispan); + c2 = c1 - (cd * c1 + sd * s1); + s1 += sd * c1 - cd * s1; + c1 = 2.0 - (c2 * c2 + s1 * s1); + s1 *= c1; + c2 *= c1; + kk = kk - ispan + jc; + } while (kk < kspan); + kk = kk - kspan + jc + inc; + } while (kk < (jc + jc)); + break; +#endif /* FFT_RADIX4 */ + } + } + + /* permute the results to normal order---done in two stages */ + /* permutation for square factors of n */ +Permute_Results_Label: + fftstate->Perm [0] = ns; + if (kt) { + k = kt + kt + 1; + if (mfactor < k) + k--; + j = 1; + fftstate->Perm [k] = jc; + do { + fftstate->Perm [j] = fftstate->Perm [j - 1] / fftstate->factor [j - 1]; + fftstate->Perm [k - 1] = fftstate->Perm [k] * fftstate->factor [j - 1]; + j++; + k--; + } while (j < k); + k3 = fftstate->Perm [k]; + kspan = fftstate->Perm [1]; + kk = jc; + k2 = kspan; + j = 1; + if (nPass != nTotal) { + /* permutation for multivariate transform */ + Permute_Multi_Label: + do { + do { + k = kk + jc; + do { + /* swap Re [kk] <> Re [k2], Im [kk] <> Im [k2] */ + ak = Re [kk]; Re [kk] = Re [k2]; Re [k2] = ak; + bk = Im [kk]; Im [kk] = Im [k2]; Im [k2] = bk; + kk += inc; + k2 += inc; + } while (kk < (k-1)); + kk += ns - jc; + k2 += ns - jc; + } while (kk < (nt-1)); + k2 = k2 - nt + kspan; + kk = kk - nt + jc; + } while (k2 < (ns-1)); + do { + do { + k2 -= fftstate->Perm [j - 1]; + j++; + k2 = fftstate->Perm [j] + k2; + } while (k2 > fftstate->Perm [j - 1]); + j = 1; + do { + if (kk < (k2-1)) + goto Permute_Multi_Label; + kk += jc; + k2 += kspan; + } while (k2 < (ns-1)); + } while (kk < (ns-1)); + } else { + /* permutation for single-variate transform (optional code) */ + Permute_Single_Label: + do { + /* swap Re [kk] <> Re [k2], Im [kk] <> Im [k2] */ + ak = Re [kk]; Re [kk] = Re [k2]; Re [k2] = ak; + bk = Im [kk]; Im [kk] = Im [k2]; Im [k2] = bk; + kk += inc; + k2 += kspan; + } while (k2 < (ns-1)); + do { + do { + k2 -= fftstate->Perm [j - 1]; + j++; + k2 = fftstate->Perm [j] + k2; + } while (k2 >= fftstate->Perm [j - 1]); + j = 1; + do { + if (kk < k2) + goto Permute_Single_Label; + kk += inc; + k2 += kspan; + } while (k2 < (ns-1)); + } while (kk < (ns-1)); + } + jc = k3; + } + + if ((kt << 1) + 1 >= mfactor) + return 0; + ispan = fftstate->Perm [kt]; + /* permutation for square-free factors of n */ + j = mfactor - kt; + fftstate->factor [j] = 1; + do { + fftstate->factor [j - 1] *= fftstate->factor [j]; + j--; + } while (j != kt); + kt++; + nn = fftstate->factor [kt - 1] - 1; + if (nn > (int) max_perm) { + return -1; + } + j = jj = 0; + for (;;) { + k = kt + 1; + k2 = fftstate->factor [kt - 1]; + kk = fftstate->factor [k - 1]; + j++; + if (j > nn) + break; /* exit infinite loop */ + jj += kk; + while (jj >= k2) { + jj -= k2; + k2 = kk; + k++; + kk = fftstate->factor [k - 1]; + jj += kk; + } + fftstate->Perm [j - 1] = jj; + } + /* determine the permutation cycles of length greater than 1 */ + j = 0; + for (;;) { + do { + j++; + kk = fftstate->Perm [j - 1]; + } while (kk < 0); + if (kk != j) { + do { + k = kk; + kk = fftstate->Perm [k - 1]; + fftstate->Perm [k - 1] = -kk; + } while (kk != j); + k3 = kk; + } else { + fftstate->Perm [j - 1] = -j; + if (j == nn) + break; /* exit infinite loop */ + } + } + max_factors *= inc; + /* reorder a and b, following the permutation cycles */ + for (;;) { + j = k3 + 1; + nt -= ispan; + ii = nt - inc + 1; + if (nt < 0) + break; /* exit infinite loop */ + do { + do { + j--; + } while (fftstate->Perm [j - 1] < 0); + jj = jc; + do { + kspan = jj; + if (jj > max_factors) { + kspan = max_factors; + } + jj -= kspan; + k = fftstate->Perm [j - 1]; + kk = jc * k + ii + jj; + k1 = kk + kspan - 1; + k2 = 0; + do { + k2++; + Rtmp [k2 - 1] = Re [k1]; + Itmp [k2 - 1] = Im [k1]; + k1 -= inc; + } while (k1 != (kk-1)); + do { + k1 = kk + kspan - 1; + k2 = k1 - jc * (k + fftstate->Perm [k - 1]); + k = -fftstate->Perm [k - 1]; + do { + Re [k1] = Re [k2]; + Im [k1] = Im [k2]; + k1 -= inc; + k2 -= inc; + } while (k1 != (kk-1)); + kk = k2 + 1; + } while (k != j); + k1 = kk + kspan - 1; + k2 = 0; + do { + k2++; + Re [k1] = Rtmp [k2 - 1]; + Im [k1] = Itmp [k2 - 1]; + k1 -= inc; + } while (k1 != (kk-1)); + } while (jj); + } while (j != 1); + } + return 0; /* exit point here */ +} +/* ---------------------- end-of-file (c source) ---------------------- */ + diff --git a/src/mod/codecs/mod_iSAC/fft.h b/src/mod/codecs/mod_iSAC/fft.h new file mode 100644 index 0000000000..a42f57bcb5 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/fft.h @@ -0,0 +1,45 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/*--------------------------------*-C-*---------------------------------* + * File: + * fftn.h + * ---------------------------------------------------------------------* + * Re[]: real value array + * Im[]: imaginary value array + * nTotal: total number of complex values + * nPass: number of elements involved in this pass of transform + * nSpan: nspan/nPass = number of bytes to increment pointer + * in Re[] and Im[] + * isign: exponent: +1 = forward -1 = reverse + * scaling: normalizing constant by which the final result is *divided* + * scaling == -1, normalize by total dimension of the transform + * scaling < -1, normalize by the square-root of the total dimension + * + * ---------------------------------------------------------------------- + * See the comments in the code for correct usage! + */ + +#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_FFT_H_ +#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_FFT_H_ + + +#include "structs.h" + + +/* double precision routine */ + + +int WebRtcIsac_Fftns (unsigned int ndim, const int dims[], double Re[], double Im[], + int isign, double scaling, FFTstr *fftstate); + + + +#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_FFT_H_ */ diff --git a/src/mod/codecs/mod_iSAC/filter_ar.c b/src/mod/codecs/mod_iSAC/filter_ar.c new file mode 100644 index 0000000000..24e83a6b91 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/filter_ar.c @@ -0,0 +1,89 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + + +/* + * This file contains the function WebRtcSpl_FilterAR(). + * The description header can be found in signal_processing_library.h + * + */ + +#include "signal_processing_library.h" + +int WebRtcSpl_FilterAR(G_CONST WebRtc_Word16* a, + int a_length, + G_CONST WebRtc_Word16* x, + int x_length, + WebRtc_Word16* state, + int state_length, + WebRtc_Word16* state_low, + int state_low_length, + WebRtc_Word16* filtered, + WebRtc_Word16* filtered_low, + int filtered_low_length) +{ + WebRtc_Word32 o; + WebRtc_Word32 oLOW; + int i, j, stop; + G_CONST WebRtc_Word16* x_ptr = &x[0]; + WebRtc_Word16* filteredFINAL_ptr = filtered; + WebRtc_Word16* filteredFINAL_LOW_ptr = filtered_low; + + for (i = 0; i < x_length; i++) + { + // Calculate filtered[i] and filtered_low[i] + G_CONST WebRtc_Word16* a_ptr = &a[1]; + WebRtc_Word16* filtered_ptr = &filtered[i - 1]; + WebRtc_Word16* filtered_low_ptr = &filtered_low[i - 1]; + WebRtc_Word16* state_ptr = &state[state_length - 1]; + WebRtc_Word16* state_low_ptr = &state_low[state_length - 1]; + + o = (WebRtc_Word32)(*x_ptr++) << 12; + oLOW = (WebRtc_Word32)0; + + stop = (i < a_length) ? i + 1 : a_length; + for (j = 1; j < stop; j++) + { + o -= WEBRTC_SPL_MUL_16_16(*a_ptr, *filtered_ptr--); + oLOW -= WEBRTC_SPL_MUL_16_16(*a_ptr++, *filtered_low_ptr--); + } + for (j = i + 1; j < a_length; j++) + { + o -= WEBRTC_SPL_MUL_16_16(*a_ptr, *state_ptr--); + oLOW -= WEBRTC_SPL_MUL_16_16(*a_ptr++, *state_low_ptr--); + } + + o += (oLOW >> 12); + *filteredFINAL_ptr = (WebRtc_Word16)((o + (WebRtc_Word32)2048) >> 12); + *filteredFINAL_LOW_ptr++ = (WebRtc_Word16)(o - ((WebRtc_Word32)(*filteredFINAL_ptr++) + << 12)); + } + + // Save the filter state + if (x_length >= state_length) + { + WebRtcSpl_CopyFromEndW16(filtered, x_length, a_length - 1, state); + WebRtcSpl_CopyFromEndW16(filtered_low, x_length, a_length - 1, state_low); + } else + { + for (i = 0; i < state_length - x_length; i++) + { + state[i] = state[i + x_length]; + state_low[i] = state_low[i + x_length]; + } + for (i = 0; i < x_length; i++) + { + state[state_length - x_length + i] = filtered[i]; + state[state_length - x_length + i] = filtered_low[i]; + } + } + + return x_length; +} diff --git a/src/mod/codecs/mod_iSAC/filter_ar_fast_q12.c b/src/mod/codecs/mod_iSAC/filter_ar_fast_q12.c new file mode 100644 index 0000000000..6184da3f4c --- /dev/null +++ b/src/mod/codecs/mod_iSAC/filter_ar_fast_q12.c @@ -0,0 +1,49 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + + +/* + * This file contains the function WebRtcSpl_FilterARFastQ12(). + * The description header can be found in signal_processing_library.h + * + */ + +#include "signal_processing_library.h" + +void WebRtcSpl_FilterARFastQ12(WebRtc_Word16 *in, WebRtc_Word16 *out, WebRtc_Word16 *A, + WebRtc_Word16 A_length, WebRtc_Word16 length) +{ + WebRtc_Word32 o; + int i, j; + + WebRtc_Word16 *x_ptr = &in[0]; + WebRtc_Word16 *filtered_ptr = &out[0]; + + for (i = 0; i < length; i++) + { + // Calculate filtered[i] + G_CONST WebRtc_Word16 *a_ptr = &A[0]; + WebRtc_Word16 *state_ptr = &out[i - 1]; + + o = WEBRTC_SPL_MUL_16_16(*x_ptr++, *a_ptr++); + + for (j = 1; j < A_length; j++) + { + o -= WEBRTC_SPL_MUL_16_16(*a_ptr++,*state_ptr--); + } + + // Saturate the output + o = WEBRTC_SPL_SAT((WebRtc_Word32)134215679, o, (WebRtc_Word32)-134217728); + + *filtered_ptr++ = (WebRtc_Word16)((o + (WebRtc_Word32)2048) >> 12); + } + + return; +} diff --git a/src/mod/codecs/mod_iSAC/filter_functions.c b/src/mod/codecs/mod_iSAC/filter_functions.c new file mode 100644 index 0000000000..33024a3dee --- /dev/null +++ b/src/mod/codecs/mod_iSAC/filter_functions.c @@ -0,0 +1,271 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#include +#ifdef WEBRTC_ANDROID +#include +#endif +#include "pitch_estimator.h" +#include "lpc_analysis.h" +#include "codec.h" + + + +void WebRtcIsac_AllPoleFilter(double *InOut, double *Coef, int lengthInOut, int orderCoef){ + + /* the state of filter is assumed to be in InOut[-1] to InOut[-orderCoef] */ + double scal; + double sum; + int n,k; + + //if (fabs(Coef[0]-1.0)<0.001) { + if ( (Coef[0] > 0.9999) && (Coef[0] < 1.0001) ) + { + for(n = 0; n < lengthInOut; n++) + { + sum = Coef[1] * InOut[-1]; + for(k = 2; k <= orderCoef; k++){ + sum += Coef[k] * InOut[-k]; + } + *InOut++ -= sum; + } + } + else + { + scal = 1.0 / Coef[0]; + for(n=0;nbuffer, sizeof(double) * PITCH_WLPCBUFLEN); + memcpy(tmpbuffer+PITCH_WLPCBUFLEN, in, sizeof(double) * PITCH_FRAME_LEN); + memcpy(wfdata->buffer, tmpbuffer+PITCH_FRAME_LEN, sizeof(double) * PITCH_WLPCBUFLEN); + + dp=weoutbuf; + dp2=whoutbuf; + for (k=0;kweostate[k]; + *dp2++ = wfdata->whostate[k]; + opol[k]=0.0; + } + opol[0]=1.0; + opol[PITCH_WLPCORDER]=0.0; + weo=dp; + who=dp2; + + endpos=PITCH_WLPCBUFLEN + PITCH_SUBFRAME_LEN; + inp=tmpbuffer + PITCH_WLPCBUFLEN; + + for (n=0; nwindow[k]*tmpbuffer[start+k]; + } + + /* Get LPC polynomial */ + WebRtcIsac_AutoCorr(corr, ext, PITCH_WLPCWINLEN, PITCH_WLPCORDER); + corr[0]=1.01*corr[0]+1.0; /* White noise correction */ + WebRtcIsac_LevDurb(apol, rc, corr, PITCH_WLPCORDER); + WebRtcIsac_BwExpand(apolr, apol, rho, PITCH_WLPCORDER+1); + + /* Filtering */ + WebRtcIsac_ZeroPoleFilter(inp, apol, apolr, PITCH_SUBFRAME_LEN, PITCH_WLPCORDER, weo); + WebRtcIsac_ZeroPoleFilter(inp, apolr, opol, PITCH_SUBFRAME_LEN, PITCH_WLPCORDER, who); + + inp+=PITCH_SUBFRAME_LEN; + endpos+=PITCH_SUBFRAME_LEN; + weo+=PITCH_SUBFRAME_LEN; + who+=PITCH_SUBFRAME_LEN; + } + + /* Export filter states */ + for (k=0;kweostate[k]=weoutbuf[PITCH_FRAME_LEN+k]; + wfdata->whostate[k]=whoutbuf[PITCH_FRAME_LEN+k]; + } + + /* Export output data */ + memcpy(weiout, weoutbuf+PITCH_WLPCORDER, sizeof(double) * PITCH_FRAME_LEN); + memcpy(whiout, whoutbuf+PITCH_WLPCORDER, sizeof(double) * PITCH_FRAME_LEN); +} + + +static const double APupper[ALLPASSSECTIONS] = {0.0347, 0.3826}; +static const double APlower[ALLPASSSECTIONS] = {0.1544, 0.744}; + + + +void WebRtcIsac_AllpassFilterForDec(double *InOut, + const double *APSectionFactors, + int lengthInOut, + double *FilterState) +{ + //This performs all-pass filtering--a series of first order all-pass sections are used + //to filter the input in a cascade manner. + int n,j; + double temp; + for (j=0; j> 12); + } + return; +} diff --git a/src/mod/codecs/mod_iSAC/filterbank_tables.c b/src/mod/codecs/mod_iSAC/filterbank_tables.c new file mode 100644 index 0000000000..0f844af9d2 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/filterbank_tables.c @@ -0,0 +1,37 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* filterbank_tables.c*/ +/* This file contains variables that are used in filterbanks.c*/ + +#include "filterbank_tables.h" +#include "settings.h" + +/* The composite all-pass filter factors */ +const float WebRtcIsac_kCompositeApFactorsFloat[4] = { + 0.03470000000000f, 0.15440000000000f, 0.38260000000000f, 0.74400000000000f}; + +/* The upper channel all-pass filter factors */ +const float WebRtcIsac_kUpperApFactorsFloat[2] = { + 0.03470000000000f, 0.38260000000000f}; + +/* The lower channel all-pass filter factors */ +const float WebRtcIsac_kLowerApFactorsFloat[2] = { + 0.15440000000000f, 0.74400000000000f}; + +/* The matrix for transforming the backward composite state to upper channel state */ +const float WebRtcIsac_kTransform1Float[8] = { + -0.00158678506084f, 0.00127157815343f, -0.00104805672709f, 0.00084837248079f, + 0.00134467983258f, -0.00107756549387f, 0.00088814793277f, -0.00071893072525f}; + +/* The matrix for transforming the backward composite state to lower channel state */ +const float WebRtcIsac_kTransform2Float[8] = { + -0.00170686041697f, 0.00136780109829f, -0.00112736532350f, 0.00091257055385f, + 0.00103094281812f, -0.00082615076557f, 0.00068092756088f, -0.00055119165484f}; diff --git a/src/mod/codecs/mod_iSAC/filterbank_tables.h b/src/mod/codecs/mod_iSAC/filterbank_tables.h new file mode 100644 index 0000000000..e8fda5e545 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/filterbank_tables.h @@ -0,0 +1,46 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * filterbank_tables.h + * + * Header file for variables that are defined in + * filterbank_tables.c. + * + */ + +#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_FILTERBANK_TABLES_H_ +#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_FILTERBANK_TABLES_H_ + +#include "structs.h" + +/********************* Coefficient Tables ************************/ +/* The number of composite all-pass filter factors */ +#define NUMBEROFCOMPOSITEAPSECTIONS 4 + +/* The number of all-pass filter factors in an upper or lower channel*/ +#define NUMBEROFCHANNELAPSECTIONS 2 + +/* The composite all-pass filter factors */ +extern const float WebRtcIsac_kCompositeApFactorsFloat[4]; + +/* The upper channel all-pass filter factors */ +extern const float WebRtcIsac_kUpperApFactorsFloat[2]; + +/* The lower channel all-pass filter factors */ +extern const float WebRtcIsac_kLowerApFactorsFloat[2]; + +/* The matrix for transforming the backward composite state to upper channel state */ +extern const float WebRtcIsac_kTransform1Float[8]; + +/* The matrix for transforming the backward composite state to lower channel state */ +extern const float WebRtcIsac_kTransform2Float[8]; + +#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_FILTERBANK_TABLES_H_ */ diff --git a/src/mod/codecs/mod_iSAC/filterbanks.c b/src/mod/codecs/mod_iSAC/filterbanks.c new file mode 100644 index 0000000000..671fd321ce --- /dev/null +++ b/src/mod/codecs/mod_iSAC/filterbanks.c @@ -0,0 +1,346 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * filterbanks.c + * + * This file contains function WebRtcIsac_AllPassFilter2Float, + * WebRtcIsac_SplitAndFilter, and WebRtcIsac_FilterAndCombine + * which implement filterbanks that produce decimated lowpass and + * highpass versions of a signal, and performs reconstruction. + * + */ + +#include "settings.h" +#include "filterbank_tables.h" +#include "codec.h" + +/* This function performs all-pass filtering--a series of first order all-pass + * sections are used to filter the input in a cascade manner. + * The input is overwritten!! + */ +static void WebRtcIsac_AllPassFilter2Float(float *InOut, const float *APSectionFactors, + int lengthInOut, int NumberOfSections, + float *FilterState) +{ + int n, j; + float temp; + for (j=0; jINLABUFx arrays + each of length QLOOKAHEAD. + The remaining FRAMESAMPLES_HALF-QLOOKAHEAD samples are based + on the first FRAMESAMPLES_HALF-QLOOKAHEAD samples of the input + array in[]. + HP: a FRAMESAMPLES_HALF array of high-pass filtered samples that + have been phase equalized. The first QLOOKAHEAD samples are + based on the samples in the two prefiltdata->INLABUFx arrays + each of length QLOOKAHEAD. + The remaining FRAMESAMPLES_HALF-QLOOKAHEAD samples are based + on the first FRAMESAMPLES_HALF-QLOOKAHEAD samples of the input + array in[]. + + LP_la: a FRAMESAMPLES_HALF array of low-pass filtered samples. + These samples are not phase equalized. They are computed + from the samples in the in[] array. + HP_la: a FRAMESAMPLES_HALF array of high-pass filtered samples + that are not phase equalized. They are computed from + the in[] vector. + prefiltdata: this input data structure's filterbank state and + lookahead sample buffers are updated for the next + encoding iteration. +*/ +void WebRtcIsac_SplitAndFilterFloat(float *pin, float *LP, float *HP, + double *LP_la, double *HP_la, + PreFiltBankstr *prefiltdata) +{ + int k,n; + float CompositeAPFilterState[NUMBEROFCOMPOSITEAPSECTIONS]; + float ForTransform_CompositeAPFilterState[NUMBEROFCOMPOSITEAPSECTIONS]; + float ForTransform_CompositeAPFilterState2[NUMBEROFCOMPOSITEAPSECTIONS]; + float tempinoutvec[FRAMESAMPLES+MAX_AR_MODEL_ORDER]; + float tempin_ch1[FRAMESAMPLES+MAX_AR_MODEL_ORDER]; + float tempin_ch2[FRAMESAMPLES+MAX_AR_MODEL_ORDER]; + float in[FRAMESAMPLES]; + float ftmp; + + + /* High pass filter */ + + for (k=0;kHPstates_float[0] + + kHpStCoefInFloat[3] * prefiltdata->HPstates_float[1]; + ftmp = pin[k] - kHpStCoefInFloat[0] * prefiltdata->HPstates_float[0] - + kHpStCoefInFloat[1] * prefiltdata->HPstates_float[1]; + prefiltdata->HPstates_float[1] = prefiltdata->HPstates_float[0]; + prefiltdata->HPstates_float[0] = ftmp; + } + + /* + % backwards all-pass filtering to obtain zero-phase + [tmp1(N2+LA:-1:LA+1, 1), state1] = filter(Q.coef, Q.coef(end:-1:1), in(N:-2:2)); + tmp1(LA:-1:1) = filter(Q.coef, Q.coef(end:-1:1), Q.LookAheadBuf1, state1); + Q.LookAheadBuf1 = in(N:-2:N-2*LA+2); + */ + /*Backwards all-pass filter the odd samples of the input (upper channel) + to eventually obtain zero phase. The composite all-pass filter (comprised of both + the upper and lower channel all-pass filsters in series) is used for the + filtering. */ + + /* First Channel */ + + /*initial state of composite filter is zero */ + for (k=0;kINLABUF1_float, + WebRtcIsac_kCompositeApFactorsFloat, QLOOKAHEAD, + NUMBEROFCOMPOSITEAPSECTIONS, CompositeAPFilterState); + + /* save the output, but write it in forward order */ + /* write the lookahead samples for the next encoding iteration. Every other + sample at the end of the input frame is written in reverse order for the + lookahead length. Exported in the prefiltdata structure. */ + for (k=0;kINLABUF1_float[k]; + prefiltdata->INLABUF1_float[k]=in[FRAMESAMPLES-1-2*k]; + } + + /* Second Channel. This is exactly like the first channel, except that the + even samples are now filtered instead (lower channel). */ + for (k=0;kINLABUF2_float, + WebRtcIsac_kCompositeApFactorsFloat, QLOOKAHEAD,NUMBEROFCOMPOSITEAPSECTIONS, + CompositeAPFilterState); + + for (k=0;kINLABUF2_float[k]; + prefiltdata->INLABUF2_float[k]=in[FRAMESAMPLES-2-2*k]; + } + + /* Transform filter states from backward to forward */ + /*At this point, each of the states of the backwards composite filters for the + two channels are transformed into forward filtering states for the corresponding + forward channel filters. Each channel's forward filtering state from the previous + encoding iteration is added to the transformed state to get a proper forward state */ + + /* So the existing NUMBEROFCOMPOSITEAPSECTIONS x 1 (4x1) state vector is multiplied by a + NUMBEROFCHANNELAPSECTIONSxNUMBEROFCOMPOSITEAPSECTIONS (2x4) transform matrix to get the + new state that is added to the previous 2x1 input state */ + + for (k=0;kINSTAT1_float[k] += ForTransform_CompositeAPFilterState[n]* + WebRtcIsac_kTransform1Float[k*NUMBEROFCHANNELAPSECTIONS+n]; + prefiltdata->INSTAT2_float[k] += ForTransform_CompositeAPFilterState2[n]* + WebRtcIsac_kTransform2Float[k*NUMBEROFCHANNELAPSECTIONS+n]; + } + } + + /*obtain polyphase components by forward all-pass filtering through each channel */ + /* the backward filtered samples are now forward filtered with the corresponding channel filters */ + /* The all pass filtering automatically updates the filter states which are exported in the + prefiltdata structure */ + WebRtcIsac_AllPassFilter2Float(tempin_ch1,WebRtcIsac_kUpperApFactorsFloat, + FRAMESAMPLES_HALF, NUMBEROFCHANNELAPSECTIONS, prefiltdata->INSTAT1_float); + WebRtcIsac_AllPassFilter2Float(tempin_ch2,WebRtcIsac_kLowerApFactorsFloat, + FRAMESAMPLES_HALF, NUMBEROFCHANNELAPSECTIONS, prefiltdata->INSTAT2_float); + + /* Now Construct low-pass and high-pass signals as combinations of polyphase components */ + for (k=0; kINSTATLA1_float); + WebRtcIsac_AllPassFilter2Float(tempin_ch2,WebRtcIsac_kLowerApFactorsFloat, + FRAMESAMPLES_HALF, NUMBEROFCHANNELAPSECTIONS, prefiltdata->INSTATLA2_float); + + for (k=0; kSTATE_0_UPPER_float); + + /* Now, all-pass filter the new lower channel signal. But since all-pass filter factors + at the decoder are swapped from the ones at the encoder, the 'upper' channel + all-pass filter factors (WebRtcIsac_kUpperApFactorsFloat) are used to filter this new + lower channel signal */ + WebRtcIsac_AllPassFilter2Float(tempin_ch2, WebRtcIsac_kUpperApFactorsFloat, + FRAMESAMPLES_HALF, NUMBEROFCHANNELAPSECTIONS,postfiltdata->STATE_0_LOWER_float); + + + /* Merge outputs to form the full length output signal.*/ + for (k=0;kHPstates1_float[0] + + kHpStCoefOut1Float[3] * postfiltdata->HPstates1_float[1]; + ftmp = Out[k] - kHpStCoefOut1Float[0] * postfiltdata->HPstates1_float[0] - + kHpStCoefOut1Float[1] * postfiltdata->HPstates1_float[1]; + postfiltdata->HPstates1_float[1] = postfiltdata->HPstates1_float[0]; + postfiltdata->HPstates1_float[0] = ftmp; + Out[k] = ftmp2; + } + + for (k=0;kHPstates2_float[0] + + kHpStCoefOut2Float[3] * postfiltdata->HPstates2_float[1]; + ftmp = Out[k] - kHpStCoefOut2Float[0] * postfiltdata->HPstates2_float[0] - + kHpStCoefOut2Float[1] * postfiltdata->HPstates2_float[1]; + postfiltdata->HPstates2_float[1] = postfiltdata->HPstates2_float[0]; + postfiltdata->HPstates2_float[0] = ftmp; + Out[k] = ftmp2; + } +} diff --git a/src/mod/codecs/mod_iSAC/get_hanning_window.c b/src/mod/codecs/mod_iSAC/get_hanning_window.c new file mode 100644 index 0000000000..6d67e60f7a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/get_hanning_window.c @@ -0,0 +1,77 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + + +/* + * This file contains the function WebRtcSpl_GetHanningWindow(). + * The description header can be found in signal_processing_library.h + * + */ + +#include "signal_processing_library.h" + +// Hanning table with 256 entries +static const WebRtc_Word16 kHanningTable[] = { + 1, 2, 6, 10, 15, 22, 30, 39, + 50, 62, 75, 89, 104, 121, 138, 157, + 178, 199, 222, 246, 271, 297, 324, 353, + 383, 413, 446, 479, 513, 549, 586, 624, + 663, 703, 744, 787, 830, 875, 920, 967, + 1015, 1064, 1114, 1165, 1218, 1271, 1325, 1381, + 1437, 1494, 1553, 1612, 1673, 1734, 1796, 1859, + 1924, 1989, 2055, 2122, 2190, 2259, 2329, 2399, + 2471, 2543, 2617, 2691, 2765, 2841, 2918, 2995, + 3073, 3152, 3232, 3312, 3393, 3475, 3558, 3641, + 3725, 3809, 3895, 3980, 4067, 4154, 4242, 4330, + 4419, 4509, 4599, 4689, 4781, 4872, 4964, 5057, + 5150, 5244, 5338, 5432, 5527, 5622, 5718, 5814, + 5910, 6007, 6104, 6202, 6299, 6397, 6495, 6594, + 6693, 6791, 6891, 6990, 7090, 7189, 7289, 7389, + 7489, 7589, 7690, 7790, 7890, 7991, 8091, 8192, + 8293, 8393, 8494, 8594, 8694, 8795, 8895, 8995, + 9095, 9195, 9294, 9394, 9493, 9593, 9691, 9790, + 9889, 9987, 10085, 10182, 10280, 10377, 10474, 10570, +10666, 10762, 10857, 10952, 11046, 11140, 11234, 11327, +11420, 11512, 11603, 11695, 11785, 11875, 11965, 12054, +12142, 12230, 12317, 12404, 12489, 12575, 12659, 12743, +12826, 12909, 12991, 13072, 13152, 13232, 13311, 13389, +13466, 13543, 13619, 13693, 13767, 13841, 13913, 13985, +14055, 14125, 14194, 14262, 14329, 14395, 14460, 14525, +14588, 14650, 14711, 14772, 14831, 14890, 14947, 15003, +15059, 15113, 15166, 15219, 15270, 15320, 15369, 15417, +15464, 15509, 15554, 15597, 15640, 15681, 15721, 15760, +15798, 15835, 15871, 15905, 15938, 15971, 16001, 16031, +16060, 16087, 16113, 16138, 16162, 16185, 16206, 16227, +16246, 16263, 16280, 16295, 16309, 16322, 16334, 16345, +16354, 16362, 16369, 16374, 16378, 16382, 16383, 16384 +}; + +void WebRtcSpl_GetHanningWindow(WebRtc_Word16 *v, WebRtc_Word16 size) +{ + int jj; + WebRtc_Word16 *vptr1; + + WebRtc_Word32 index; + WebRtc_Word32 factor = ((WebRtc_Word32)0x40000000); + + factor = WebRtcSpl_DivW32W16(factor, size); + if (size < 513) + index = (WebRtc_Word32)-0x200000; + else + index = (WebRtc_Word32)-0x100000; + vptr1 = v; + + for (jj = 0; jj < size; jj++) + { + index += factor; + (*vptr1++) = kHanningTable[index >> 22]; + } + +} diff --git a/src/mod/codecs/mod_iSAC/get_scaling_square.c b/src/mod/codecs/mod_iSAC/get_scaling_square.c new file mode 100644 index 0000000000..dccbf334fd --- /dev/null +++ b/src/mod/codecs/mod_iSAC/get_scaling_square.c @@ -0,0 +1,44 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + + +/* + * This file contains the function WebRtcSpl_GetScalingSquare(). + * The description header can be found in signal_processing_library.h + * + */ + +#include "signal_processing_library.h" + +int WebRtcSpl_GetScalingSquare(WebRtc_Word16 *in_vector, int in_vector_length, int times) +{ + int nbits = WebRtcSpl_GetSizeInBits(times); + int i; + WebRtc_Word16 smax = -1; + WebRtc_Word16 sabs; + WebRtc_Word16 *sptr = in_vector; + int t; + int looptimes = in_vector_length; + + for (i = looptimes; i > 0; i--) + { + sabs = (*sptr > 0 ? *sptr++ : -*sptr++); + smax = (sabs > smax ? sabs : smax); + } + t = WebRtcSpl_NormW32(WEBRTC_SPL_MUL(smax, smax)); + + if (smax == 0) + { + return 0; // Since norm(0) returns 0 + } else + { + return (t > nbits) ? 0 : nbits - t; + } +} diff --git a/src/mod/codecs/mod_iSAC/ilbc_specific_functions.c b/src/mod/codecs/mod_iSAC/ilbc_specific_functions.c new file mode 100644 index 0000000000..5a9e5773b3 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/ilbc_specific_functions.c @@ -0,0 +1,120 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + + +/* + * This file contains implementations of the iLBC specific functions + * WebRtcSpl_ScaleAndAddVectorsWithRound() + * WebRtcSpl_ReverseOrderMultArrayElements() + * WebRtcSpl_ElementwiseVectorMult() + * WebRtcSpl_AddVectorsAndShift() + * WebRtcSpl_AddAffineVectorToVector() + * WebRtcSpl_AffineTransformVector() + * + * The description header can be found in signal_processing_library.h + * + */ + +#include "signal_processing_library.h" + +void WebRtcSpl_ScaleAndAddVectorsWithRound(WebRtc_Word16 *vector1, WebRtc_Word16 scale1, + WebRtc_Word16 *vector2, WebRtc_Word16 scale2, + WebRtc_Word16 right_shifts, WebRtc_Word16 *out, + WebRtc_Word16 vector_length) +{ + int i; + WebRtc_Word16 roundVal; + roundVal = 1 << right_shifts; + roundVal = roundVal >> 1; + for (i = 0; i < vector_length; i++) + { + out[i] = (WebRtc_Word16)((WEBRTC_SPL_MUL_16_16(vector1[i], scale1) + + WEBRTC_SPL_MUL_16_16(vector2[i], scale2) + roundVal) >> right_shifts); + } +} + +void WebRtcSpl_ReverseOrderMultArrayElements(WebRtc_Word16 *out, G_CONST WebRtc_Word16 *in, + G_CONST WebRtc_Word16 *win, + WebRtc_Word16 vector_length, + WebRtc_Word16 right_shifts) +{ + int i; + WebRtc_Word16 *outptr = out; + G_CONST WebRtc_Word16 *inptr = in; + G_CONST WebRtc_Word16 *winptr = win; + for (i = 0; i < vector_length; i++) + { + (*outptr++) = (WebRtc_Word16)WEBRTC_SPL_MUL_16_16_RSFT(*inptr++, + *winptr--, right_shifts); + } +} + +void WebRtcSpl_ElementwiseVectorMult(WebRtc_Word16 *out, G_CONST WebRtc_Word16 *in, + G_CONST WebRtc_Word16 *win, WebRtc_Word16 vector_length, + WebRtc_Word16 right_shifts) +{ + int i; + WebRtc_Word16 *outptr = out; + G_CONST WebRtc_Word16 *inptr = in; + G_CONST WebRtc_Word16 *winptr = win; + for (i = 0; i < vector_length; i++) + { + (*outptr++) = (WebRtc_Word16)WEBRTC_SPL_MUL_16_16_RSFT(*inptr++, + *winptr++, right_shifts); + } +} + +void WebRtcSpl_AddVectorsAndShift(WebRtc_Word16 *out, G_CONST WebRtc_Word16 *in1, + G_CONST WebRtc_Word16 *in2, WebRtc_Word16 vector_length, + WebRtc_Word16 right_shifts) +{ + int i; + WebRtc_Word16 *outptr = out; + G_CONST WebRtc_Word16 *in1ptr = in1; + G_CONST WebRtc_Word16 *in2ptr = in2; + for (i = vector_length; i > 0; i--) + { + (*outptr++) = (WebRtc_Word16)(((*in1ptr++) + (*in2ptr++)) >> right_shifts); + } +} + +void WebRtcSpl_AddAffineVectorToVector(WebRtc_Word16 *out, WebRtc_Word16 *in, + WebRtc_Word16 gain, WebRtc_Word32 add_constant, + WebRtc_Word16 right_shifts, int vector_length) +{ + WebRtc_Word16 *inPtr; + WebRtc_Word16 *outPtr; + int i; + + inPtr = in; + outPtr = out; + for (i = 0; i < vector_length; i++) + { + (*outPtr++) += (WebRtc_Word16)((WEBRTC_SPL_MUL_16_16((*inPtr++), gain) + + (WebRtc_Word32)add_constant) >> right_shifts); + } +} + +void WebRtcSpl_AffineTransformVector(WebRtc_Word16 *out, WebRtc_Word16 *in, + WebRtc_Word16 gain, WebRtc_Word32 add_constant, + WebRtc_Word16 right_shifts, int vector_length) +{ + WebRtc_Word16 *inPtr; + WebRtc_Word16 *outPtr; + int i; + + inPtr = in; + outPtr = out; + for (i = 0; i < vector_length; i++) + { + (*outPtr++) = (WebRtc_Word16)((WEBRTC_SPL_MUL_16_16((*inPtr++), gain) + + (WebRtc_Word32)add_constant) >> right_shifts); + } +} diff --git a/src/mod/codecs/mod_iSAC/intialize.c b/src/mod/codecs/mod_iSAC/intialize.c new file mode 100644 index 0000000000..6df034d1c7 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/intialize.c @@ -0,0 +1,175 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* encode.c - Encoding function for the iSAC coder */ + +#include "structs.h" +#include "codec.h" +#include "pitch_estimator.h" + +#include + +void WebRtcIsac_InitMasking(MaskFiltstr *maskdata) { + + int k; + + for (k = 0; k < WINLEN; k++) { + maskdata->DataBufferLo[k] = 0.0; + maskdata->DataBufferHi[k] = 0.0; + } + for (k = 0; k < ORDERLO+1; k++) { + maskdata->CorrBufLo[k] = 0.0; + maskdata->PreStateLoF[k] = 0.0; + maskdata->PreStateLoG[k] = 0.0; + maskdata->PostStateLoF[k] = 0.0; + maskdata->PostStateLoG[k] = 0.0; + } + for (k = 0; k < ORDERHI+1; k++) { + maskdata->CorrBufHi[k] = 0.0; + maskdata->PreStateHiF[k] = 0.0; + maskdata->PreStateHiG[k] = 0.0; + maskdata->PostStateHiF[k] = 0.0; + maskdata->PostStateHiG[k] = 0.0; + } + + maskdata->OldEnergy = 10.0; + + /* fill tables for transforms */ + WebRtcIsac_InitTransform(); + + return; +} + +void WebRtcIsac_InitPreFilterbank(PreFiltBankstr *prefiltdata) +{ + int k; + + for (k = 0; k < QLOOKAHEAD; k++) { + prefiltdata->INLABUF1[k] = 0; + prefiltdata->INLABUF2[k] = 0; + + prefiltdata->INLABUF1_float[k] = 0; + prefiltdata->INLABUF2_float[k] = 0; + } + for (k = 0; k < 2*(QORDER-1); k++) { + prefiltdata->INSTAT1[k] = 0; + prefiltdata->INSTAT2[k] = 0; + prefiltdata->INSTATLA1[k] = 0; + prefiltdata->INSTATLA2[k] = 0; + + prefiltdata->INSTAT1_float[k] = 0; + prefiltdata->INSTAT2_float[k] = 0; + prefiltdata->INSTATLA1_float[k] = 0; + prefiltdata->INSTATLA2_float[k] = 0; + } + + /* High pass filter states */ + prefiltdata->HPstates[0] = 0.0; + prefiltdata->HPstates[1] = 0.0; + + prefiltdata->HPstates_float[0] = 0.0f; + prefiltdata->HPstates_float[1] = 0.0f; + + return; +} + +void WebRtcIsac_InitPostFilterbank(PostFiltBankstr *postfiltdata) +{ + int k; + + for (k = 0; k < 2*POSTQORDER; k++) { + postfiltdata->STATE_0_LOWER[k] = 0; + postfiltdata->STATE_0_UPPER[k] = 0; + + postfiltdata->STATE_0_LOWER_float[k] = 0; + postfiltdata->STATE_0_UPPER_float[k] = 0; + } + + /* High pass filter states */ + postfiltdata->HPstates1[0] = 0.0; + postfiltdata->HPstates1[1] = 0.0; + + postfiltdata->HPstates2[0] = 0.0; + postfiltdata->HPstates2[1] = 0.0; + + postfiltdata->HPstates1_float[0] = 0.0f; + postfiltdata->HPstates1_float[1] = 0.0f; + + postfiltdata->HPstates2_float[0] = 0.0f; + postfiltdata->HPstates2_float[1] = 0.0f; + + return; +} + + +void WebRtcIsac_InitPitchFilter(PitchFiltstr *pitchfiltdata) +{ + int k; + + for (k = 0; k < PITCH_BUFFSIZE; k++) { + pitchfiltdata->ubuf[k] = 0.0; + } + pitchfiltdata->ystate[0] = 0.0; + for (k = 1; k < (PITCH_DAMPORDER); k++) { + pitchfiltdata->ystate[k] = 0.0; + } + pitchfiltdata->oldlagp[0] = 50.0; + pitchfiltdata->oldgainp[0] = 0.0; +} + +void WebRtcIsac_InitWeightingFilter(WeightFiltstr *wfdata) +{ + int k; + double t, dtmp, dtmp2, denum, denum2; + + for (k=0;kbuffer[k]=0.0; + + for (k=0;kistate[k]=0.0; + wfdata->weostate[k]=0.0; + wfdata->whostate[k]=0.0; + } + + /* next part should be in Matlab, writing to a global table */ + t = 0.5; + denum = 1.0 / ((double) PITCH_WLPCWINLEN); + denum2 = denum * denum; + for (k=0;kwindow[k] = dtmp2 * dtmp2; + t++; + } +} + +/* clear all buffers */ +void WebRtcIsac_InitPitchAnalysis(PitchAnalysisStruct *State) +{ + int k; + + for (k = 0; k < PITCH_CORR_LEN2+PITCH_CORR_STEP2+PITCH_MAX_LAG/2-PITCH_FRAME_LEN/2+2; k++) + State->dec_buffer[k] = 0.0; + for (k = 0; k < 2*ALLPASSSECTIONS+1; k++) + State->decimator_state[k] = 0.0; + for (k = 0; k < 2; k++) + State->hp_state[k] = 0.0; + for (k = 0; k < QLOOKAHEAD; k++) + State->whitened_buf[k] = 0.0; + for (k = 0; k < QLOOKAHEAD; k++) + State->inbuf[k] = 0.0; + + WebRtcIsac_InitPitchFilter(&(State->PFstr_wght)); + + WebRtcIsac_InitPitchFilter(&(State->PFstr)); + + WebRtcIsac_InitWeightingFilter(&(State->Wghtstr)); +} diff --git a/src/mod/codecs/mod_iSAC/isac.c b/src/mod/codecs/mod_iSAC/isac.c new file mode 100644 index 0000000000..2199d571f9 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/isac.c @@ -0,0 +1,2797 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * isac.c + * + * This C file contains the functions for the ISAC API + * + */ + +#include "isac.h" +#include "bandwidth_estimator.h" +#include "crc.h" +#include "entropy_coding.h" +#include "codec.h" +#include "structs.h" +#include "signal_processing_library.h" +#include "lpc_shape_swb16_tables.h" +#include "os_specific_inline.h" + +#include +#include +#include +#include + +#define BIT_MASK_DEC_INIT 0x0001 +#define BIT_MASK_ENC_INIT 0x0002 + +#define LEN_CHECK_SUM_WORD8 4 +#define MAX_NUM_LAYERS 10 + + +/**************************************************************************** + * UpdatePayloadSizeLimit() + * + * Call this function to update the limit on the payload size. The limit on + * payload size might change i) if a user ''directly changes the limit by + * calling xxx_setMaxPayloadSize() or xxx_setMaxRate(), or ii) indirectly + * when bandwidth is changing. The latter might be the result of bandwidth + * adaptation, or direct change of the bottleneck in instantaneous mode. + * + * This function takes the current overall limit on payload, and translate it + * to the limits on lower and upper-band. If the codec is in wideband mode + * then the overall limit and the limit on the lower-band is the same. + * Otherwise, a fraction of the limit should be allocated to lower-band + * leaving some room for the upper-band bit-stream. That is why an update + * of limit is required every time that the bandwidth is changing. + * + */ +static void UpdatePayloadSizeLimit( + ISACMainStruct *instISAC) +{ + WebRtc_Word16 lim30MsPayloadBytes; + WebRtc_Word16 lim60MsPayloadBytes; + + lim30MsPayloadBytes = WEBRTC_SPL_MIN( + (instISAC->maxPayloadSizeBytes), + (instISAC->maxRateBytesPer30Ms)); + + lim60MsPayloadBytes = WEBRTC_SPL_MIN( + (instISAC->maxPayloadSizeBytes), + (instISAC->maxRateBytesPer30Ms << 1)); + + // The only time that iSAC will have 60 ms + // frame-size is when operating in wideband so + // there is no upper-band bit-stream + + if(instISAC->bandwidthKHz == isac8kHz) + { + // at 8 kHz there is no upper-band bit-stream + // therefore the lower-band limit is as the overall + // limit. + instISAC->instLB.ISACencLB_obj.payloadLimitBytes60 = + lim60MsPayloadBytes; + instISAC->instLB.ISACencLB_obj.payloadLimitBytes30 = + lim30MsPayloadBytes; + } + else + { + // when in super-wideband, we only have 30 ms frames + // Do a rate allocation for the given limit. + if(lim30MsPayloadBytes > 250) + { + // 4/5 to lower-band the rest for upper-band + instISAC->instLB.ISACencLB_obj.payloadLimitBytes30 = + (lim30MsPayloadBytes << 2) / 5; + } + else if(lim30MsPayloadBytes > 200) + { + // for the interval of 200 to 250 the share of + // upper-band linearly grows from 20 to 50; + instISAC->instLB.ISACencLB_obj.payloadLimitBytes30 = + (lim30MsPayloadBytes << 1) / 5 + 100; + } + else + { + // allocate only 20 for upper-band + instISAC->instLB.ISACencLB_obj.payloadLimitBytes30 = + lim30MsPayloadBytes - 20; + } + instISAC->instUB.ISACencUB_obj.maxPayloadSizeBytes = + lim30MsPayloadBytes; + } +} + + +/**************************************************************************** + * UpdateBottleneck() + * + * This function updates the bottleneck only if the codec is operating in + * channel-adaptive mode. Furthermore, as the update of bottleneck might + * result in an update of bandwidth, therefore, the bottlenech should be + * updated just right before the first 10ms of a frame is pushed into encoder. + * + */ +static void UpdateBottleneck( + ISACMainStruct *instISAC) +{ + // read the bottleneck from bandwidth estimator for the + // first 10 ms audio. This way, if there is a change + // in bandwidth upper and lower-band will be in sync. + if((instISAC->codingMode == 0) && + (instISAC->instLB.ISACencLB_obj.buffer_index == 0) && + (instISAC->instLB.ISACencLB_obj.frame_nb == 0)) + { + WebRtc_Word32 bottleneck; + WebRtcIsac_GetUplinkBandwidth(&(instISAC->bwestimator_obj), + &bottleneck); + + // Adding hysteresis when increasing signal bandwidth + if((instISAC->bandwidthKHz == isac8kHz) + && (bottleneck > 37000) + && (bottleneck < 41000)) + { + bottleneck = 37000; + } + + // switching from 12 kHz to 16 kHz is not allowed at this revision + // If we let this happen, we have to take care of buffer_index and + // the last LPC vector. + if((instISAC->bandwidthKHz != isac16kHz) && + (bottleneck > 46000)) + { + bottleneck = 46000; + } + + // we might need a rate allocation. + if(instISAC->encoderSamplingRateKHz == kIsacWideband) + { + // wideband is the only choise we have here. + instISAC->instLB.ISACencLB_obj.bottleneck = + (bottleneck > 32000)? 32000:bottleneck; + instISAC->bandwidthKHz = isac8kHz; + } + else + { + // do the rate-allosation and get the new bandwidth. + enum ISACBandwidth bandwidth; + WebRtcIsac_RateAllocation(bottleneck, + &(instISAC->instLB.ISACencLB_obj.bottleneck), + &(instISAC->instUB.ISACencUB_obj.bottleneck), + &bandwidth); + if(bandwidth != isac8kHz) + { + instISAC->instLB.ISACencLB_obj.new_framelength = 480; + } + if(bandwidth != instISAC->bandwidthKHz) + { + // bandwidth is changing. + instISAC->bandwidthKHz = bandwidth; + UpdatePayloadSizeLimit(instISAC); + if(bandwidth == isac12kHz) + { + instISAC->instLB.ISACencLB_obj.buffer_index = 0; + } + // currently we don't let the bandwidth to switch to 16 kHz + // if in adaptive mode. If we let this happen, we have to take + // car of buffer_index and the last LPC vector. + } + } + } +} + + +/**************************************************************************** + * GetSendBandwidthInfo() + * + * This is called to get the bandwidth info. This info is the bandwidth and + * and the jitter of 'there-to-here' channel, estimated 'here.' These info + * is signaled in an in-band fashion to the otherside. + * + * The call to the bandwidth estimator trigers a recursive averaging which + * has to be synchronized between encoder & decoder, therefore. The call to + * BWE should be once per packet. As the BWE info is inserted into bit-stream + * we need a valid info right before the encodeLB function is going to + * generating a bit-stream. That is when lower-band buffer has already 20ms + * of audio, and the 3rd block of 10ms is going to be injected into encoder. + * + * Inputs: + * - instISAC : iSAC instance. + * + * Outputs: + * - bandwidthIndex : an index which has to be encoded in + * lower-band bit-stream, indicating the + * bandwidth of there-to-here channel. + * - jitterInfo : this indicates if the jitter is high + * or low and it is encoded in upper-band + * bit-stream. + * + */ +static void GetSendBandwidthInfo( + ISACMainStruct* instISAC, + WebRtc_Word16* bandwidthIndex, + WebRtc_Word16* jitterInfo) +{ + if((instISAC->instLB.ISACencLB_obj.buffer_index == + (FRAMESAMPLES_10ms << 1)) && + (instISAC->instLB.ISACencLB_obj.frame_nb == 0)) + { + /* bandwidth estimation and coding */ + WebRtcIsac_GetDownlinkBwJitIndexImpl(&(instISAC->bwestimator_obj), + bandwidthIndex, jitterInfo, instISAC->decoderSamplingRateKHz); + } +} + + +/**************************************************************************** + * WebRtcIsac_AssignSize(...) + * + * This function returns the size of the ISAC instance, so that the instance + * can be created out side iSAC. + * + * Output: + * - sizeinbytes : number of bytes needed to allocate for the + * instance. + * + * Return value : 0 - Ok + * -1 - Error + */ +WebRtc_Word16 WebRtcIsac_AssignSize( + int *sizeInBytes) +{ + *sizeInBytes = sizeof(ISACMainStruct) * 2 / sizeof(WebRtc_Word16); + return 0; +} + + +/**************************************************************************** + * WebRtcIsac_Assign(...) + * + * This function assignes the memory already created to the ISAC instance. + * + * Input: + * - ISAC_main_inst : address of the pointer to the coder instance. + * - instISAC_Addr : the already allocaded memeory, where we put the + * iSAC struct + * + * Return value : 0 - Ok + * -1 - Error + */ +WebRtc_Word16 WebRtcIsac_Assign( + ISACStruct** ISAC_main_inst, + void* instISAC_Addr) +{ + if(instISAC_Addr != NULL) + { + ISACMainStruct* instISAC = (ISACMainStruct*)instISAC_Addr; + instISAC->errorCode = 0; + instISAC->initFlag = 0; + + // Assign the address + *ISAC_main_inst = (ISACStruct*)instISAC_Addr; + + // Default is wideband. + instISAC->encoderSamplingRateKHz = kIsacWideband; + instISAC->decoderSamplingRateKHz = kIsacWideband; + instISAC->bandwidthKHz = isac8kHz; + return 0; + } + else + { + return -1; + } +} + + +/**************************************************************************** + * WebRtcIsac_Create(...) + * + * This function creates an ISAC instance, which will contain the state + * information for one coding/decoding channel. + * + * Input: + * - ISAC_main_inst : address of the pointer to the coder instance. + * + * Return value : 0 - Ok + * -1 - Error + */ +WebRtc_Word16 WebRtcIsac_Create( + ISACStruct** ISAC_main_inst) +{ + ISACMainStruct* instISAC; + + instISAC = (ISACMainStruct*)WEBRTC_SPL_VNEW(ISACMainStruct, 1); + *ISAC_main_inst = (ISACStruct*)instISAC; + if(*ISAC_main_inst != NULL) + { + instISAC->errorCode = 0; + instISAC->initFlag = 0; + // Default is wideband + instISAC->bandwidthKHz = isac8kHz; + instISAC->encoderSamplingRateKHz = kIsacWideband; + instISAC->decoderSamplingRateKHz = kIsacWideband; + return 0; + } + else + { + return -1; + } +} + + +/**************************************************************************** + * WebRtcIsac_Free(...) + * + * This function frees the ISAC instance created at the beginning. + * + * Input: + * - ISAC_main_inst : a ISAC instance. + * + * Return value : 0 - Ok + * -1 - Error + */ +WebRtc_Word16 WebRtcIsac_Free( + ISACStruct* ISAC_main_inst) +{ + ISACMainStruct* instISAC; + + instISAC = (ISACMainStruct*)ISAC_main_inst; + WEBRTC_SPL_FREE(instISAC); + return 0; +} + + +/**************************************************************************** + * EncoderInitLb(...) - internal function for initialization of + * Lower Band + * EncoderInitUb(...) - internal function for initialization of + * Upper Band + * WebRtcIsac_EncoderInit(...) - API function + * + * This function initializes a ISAC instance prior to the encoder calls. + * + * Input: + * - ISAC_main_inst : ISAC instance. + * - CodingMode : 0 -> Bit rate and frame length are automatically + * adjusted to available bandwidth on + * transmission channel, applicable just to + * wideband mode. + * 1 -> User sets a frame length and a target bit + * rate which is taken as the maximum + * short-term average bit rate. + * + * Return value : 0 - Ok + * -1 - Error + */ +static WebRtc_Word16 EncoderInitLb( + ISACLBStruct* instLB, + WebRtc_Word16 codingMode, + enum IsacSamplingRate sampRate) +{ + WebRtc_Word16 statusInit = 0; + int k; + + /* Init stream vector to zero */ + for(k=0; k < STREAM_SIZE_MAX_60; k++) + { + instLB->ISACencLB_obj.bitstr_obj.stream[k] = 0; + } + + if((codingMode == 1) || (sampRate == kIsacSuperWideband)) + { + // 30 ms frame-size if either in super-wideband or + // instanteneous mode (I-mode) + instLB->ISACencLB_obj.new_framelength = 480; + } + else + { + instLB->ISACencLB_obj.new_framelength = INITIAL_FRAMESAMPLES; + } + + WebRtcIsac_InitMasking(&instLB->ISACencLB_obj.maskfiltstr_obj); + WebRtcIsac_InitPreFilterbank(&instLB->ISACencLB_obj.prefiltbankstr_obj); + WebRtcIsac_InitPitchFilter(&instLB->ISACencLB_obj.pitchfiltstr_obj); + WebRtcIsac_InitPitchAnalysis( + &instLB->ISACencLB_obj.pitchanalysisstr_obj); + + + instLB->ISACencLB_obj.buffer_index = 0; + instLB->ISACencLB_obj.frame_nb = 0; + /* default for I-mode */ + instLB->ISACencLB_obj.bottleneck = 32000; + instLB->ISACencLB_obj.current_framesamples = 0; + instLB->ISACencLB_obj.s2nr = 0; + instLB->ISACencLB_obj.payloadLimitBytes30 = STREAM_SIZE_MAX_30; + instLB->ISACencLB_obj.payloadLimitBytes60 = STREAM_SIZE_MAX_60; + instLB->ISACencLB_obj.maxPayloadBytes = STREAM_SIZE_MAX_60; + instLB->ISACencLB_obj.maxRateInBytes = STREAM_SIZE_MAX_30; + instLB->ISACencLB_obj.enforceFrameSize = 0; + /* invalid value prevents getRedPayload to + run before encoder is called */ + instLB->ISACencLB_obj.lastBWIdx = -1; + return statusInit; +} + +static WebRtc_Word16 EncoderInitUb( + ISACUBStruct* instUB, + WebRtc_Word16 bandwidth) +{ + WebRtc_Word16 statusInit = 0; + int k; + + /* Init stream vector to zero */ + for(k = 0; k < STREAM_SIZE_MAX_60; k++) + { + instUB->ISACencUB_obj.bitstr_obj.stream[k] = 0; + } + + WebRtcIsac_InitMasking(&instUB->ISACencUB_obj.maskfiltstr_obj); + WebRtcIsac_InitPreFilterbank(&instUB->ISACencUB_obj.prefiltbankstr_obj); + + if(bandwidth == isac16kHz) + { + instUB->ISACencUB_obj.buffer_index = LB_TOTAL_DELAY_SAMPLES; + } + else + { + instUB->ISACencUB_obj.buffer_index = 0; + } + /* default for I-mode */ + instUB->ISACencUB_obj.bottleneck = 32000; + // These store the limits for the wideband + super-wideband bit-stream. + instUB->ISACencUB_obj.maxPayloadSizeBytes = STREAM_SIZE_MAX_30 << 1; + // This has to be updated after each lower-band encoding to guarantee + // a correct payload-limitation. + instUB->ISACencUB_obj.numBytesUsed = 0; + memset(instUB->ISACencUB_obj.data_buffer_float, 0, + (MAX_FRAMESAMPLES + LB_TOTAL_DELAY_SAMPLES) * sizeof(float)); + + memcpy(&(instUB->ISACencUB_obj.lastLPCVec), + WebRtcIsac_kMeanLarUb16, sizeof(double) * UB_LPC_ORDER); + + return statusInit; +} + + +WebRtc_Word16 WebRtcIsac_EncoderInit( + ISACStruct* ISAC_main_inst, + WebRtc_Word16 codingMode) +{ + ISACMainStruct *instISAC; + WebRtc_Word16 status; + + instISAC = (ISACMainStruct*)ISAC_main_inst; + + if((codingMode != 0) && (codingMode != 1)) + { + instISAC->errorCode = ISAC_DISALLOWED_CODING_MODE; + return -1; + } + // default bottleneck + instISAC->bottleneck = MAX_ISAC_BW; + + if(instISAC->encoderSamplingRateKHz == kIsacWideband) + { + instISAC->bandwidthKHz = isac8kHz; + instISAC->maxPayloadSizeBytes = STREAM_SIZE_MAX_60; + instISAC->maxRateBytesPer30Ms = STREAM_SIZE_MAX_30; + } + else + { + instISAC->bandwidthKHz = isac16kHz; + instISAC->maxPayloadSizeBytes = STREAM_SIZE_MAX; + instISAC->maxRateBytesPer30Ms = STREAM_SIZE_MAX; + } + + // Channel-adaptive = 0; Instantaneous (Channel-independent) = 1; + instISAC->codingMode = codingMode; + + WebRtcIsac_InitBandwidthEstimator(&instISAC->bwestimator_obj, + instISAC->encoderSamplingRateKHz, + instISAC->decoderSamplingRateKHz); + + WebRtcIsac_InitRateModel(&instISAC->rate_data_obj); + /* default for I-mode */ + instISAC->MaxDelay = 10.0; + + status = EncoderInitLb(&instISAC->instLB, codingMode, + instISAC->encoderSamplingRateKHz); + if(status < 0) + { + instISAC->errorCode = -status; + return -1; + } + + if(instISAC->encoderSamplingRateKHz == kIsacSuperWideband) + { + // Initialize encoder filter-bank. + memset(instISAC->analysisFBState1, 0, + FB_STATE_SIZE_WORD32 * sizeof(WebRtc_Word32)); + memset(instISAC->analysisFBState2, 0, + FB_STATE_SIZE_WORD32 * sizeof(WebRtc_Word32)); + + status = EncoderInitUb(&(instISAC->instUB), + instISAC->bandwidthKHz); + if(status < 0) + { + instISAC->errorCode = -status; + return -1; + } + } + // Initializtion is successful, set the flag + instISAC->initFlag |= BIT_MASK_ENC_INIT; + return 0; +} + + +/**************************************************************************** + * WebRtcIsac_Encode(...) + * + * This function encodes 10ms frame(s) and inserts it into a package. + * Input speech length has to be 160 samples (10ms). The encoder buffers those + * 10ms frames until it reaches the chosen Framesize (480 or 960 samples + * corresponding to 30 or 60 ms frames), and then proceeds to the encoding. + * + * Input: + * - ISAC_main_inst : ISAC instance. + * - speechIn : input speech vector. + * + * Output: + * - encoded : the encoded data vector + * + * Return value: + * : >0 - Length (in bytes) of coded data + * : 0 - The buffer didn't reach the chosen + * frameSize so it keeps buffering speech + * samples. + * : -1 - Error + */ +WebRtc_Word16 WebRtcIsac_Encode( + ISACStruct* ISAC_main_inst, + const WebRtc_Word16* speechIn, + WebRtc_Word16* encoded) +{ + ISACMainStruct* instISAC; + ISACLBStruct* instLB; + ISACUBStruct* instUB; + + float inFrame[FRAMESAMPLES_10ms]; + WebRtc_Word16 speechInLB[FRAMESAMPLES_10ms]; + WebRtc_Word16 speechInUB[FRAMESAMPLES_10ms]; + WebRtc_Word16 streamLenLB; + WebRtc_Word16 streamLenUB; + WebRtc_Word16 streamLen; + WebRtc_Word16 k; + WebRtc_UWord8* ptrEncodedUW8 = (WebRtc_UWord8*)encoded; + int garbageLen; + WebRtc_Word32 bottleneck; + WebRtc_Word16 bottleneckIdx = 0; + WebRtc_Word16 jitterInfo = 0; + + instISAC = (ISACMainStruct*)ISAC_main_inst; + instLB = &(instISAC->instLB); + instUB = &(instISAC->instUB); + + /* check if encoder initiated */ + if((instISAC->initFlag & BIT_MASK_ENC_INIT) != + BIT_MASK_ENC_INIT) + { + instISAC->errorCode = ISAC_ENCODER_NOT_INITIATED; + return -1; + } + + if(instISAC->encoderSamplingRateKHz == kIsacSuperWideband) + { + WebRtcSpl_AnalysisQMF(speechIn, speechInLB, speechInUB, + instISAC->analysisFBState1, instISAC->analysisFBState2); + + /* convert from fixed to floating point */ + for(k = 0; k < FRAMESAMPLES_10ms; k++) + { + inFrame[k] = (float)speechInLB[k]; + } + } + else + { + for(k = 0; k < FRAMESAMPLES_10ms; k++) + { + inFrame[k] = (float) speechIn[k]; + } + } + + /* add some noise to avoid denormal numbers */ + inFrame[0] += (float)1.23455334e-3; + inFrame[1] -= (float)2.04324239e-3; + inFrame[2] += (float)1.90854954e-3; + inFrame[9] += (float)1.84854878e-3; + + + // This function will update the bottleneck if required + UpdateBottleneck(instISAC); + + // Get the bandwith information which has to be sent to the other side + GetSendBandwidthInfo(instISAC, &bottleneckIdx, &jitterInfo); + + // + // ENCODE LOWER-BAND + // + streamLenLB = WebRtcIsac_EncodeLb(inFrame, &instLB->ISACencLB_obj, + instISAC->codingMode, bottleneckIdx); + + if(streamLenLB < 0) + { + return -1; + } + + if(instISAC->encoderSamplingRateKHz == kIsacSuperWideband) + { + instUB = &(instISAC->instUB); + + // convert to float + for(k = 0; k < FRAMESAMPLES_10ms; k++) + { + inFrame[k] = (float) speechInUB[k]; + } + + /* add some noise to avoid denormal numbers */ + inFrame[0] += (float)1.23455334e-3; + inFrame[1] -= (float)2.04324239e-3; + inFrame[2] += (float)1.90854954e-3; + inFrame[9] += (float)1.84854878e-3; + + // Tell to upper-band the number of bytes used so far. + // This is for payload limitation. + instUB->ISACencUB_obj.numBytesUsed = streamLenLB + 1 + + LEN_CHECK_SUM_WORD8; + + // + // ENCODE UPPER-BAND + // + switch(instISAC->bandwidthKHz) + { + case isac12kHz: + { + streamLenUB = WebRtcIsac_EncodeUb12(inFrame, + &instUB->ISACencUB_obj, + jitterInfo); + break; + } + case isac16kHz: + { + streamLenUB = WebRtcIsac_EncodeUb16(inFrame, + &instUB->ISACencUB_obj, + jitterInfo); + break; + } + case isac8kHz: + { + streamLenUB = 0; + break; + } + default: + return -1; + } + + if((streamLenUB < 0) && + (streamLenUB != -ISAC_PAYLOAD_LARGER_THAN_LIMIT)) + { + // an error has happened but this is not the error due to a + // bit-stream larger than the limit + return -1; + } + + if(streamLenLB == 0) + { + return 0; + } + + // One bite is allocated for the length. According to older decoders + // so the length bit-stream plus one byte for size and + // LEN_CHECK_SUM_WORD8 for the checksum should be less than or equal + // to 255. + if((streamLenUB > (255 - (LEN_CHECK_SUM_WORD8 + 1))) || + (streamLenUB == -ISAC_PAYLOAD_LARGER_THAN_LIMIT)) + { + // we have got a too long bit-stream we skip the upper-band + // bit-stream for this frame. + streamLenUB = 0; + } + + memcpy(ptrEncodedUW8, instLB->ISACencLB_obj.bitstr_obj.stream, + streamLenLB); + streamLen = streamLenLB; + if(streamLenUB > 0) + { + ptrEncodedUW8[streamLenLB] = (WebRtc_UWord8)(streamLenUB + 1 + + LEN_CHECK_SUM_WORD8); + memcpy(&ptrEncodedUW8[streamLenLB + 1], + instUB->ISACencUB_obj.bitstr_obj.stream, streamLenUB); + streamLen += ptrEncodedUW8[streamLenLB]; + } + else + { + ptrEncodedUW8[streamLenLB] = 0; + } + } + else + { + if(streamLenLB == 0) + { + return 0; + } + memcpy(ptrEncodedUW8, instLB->ISACencLB_obj.bitstr_obj.stream, + streamLenLB); + streamLenUB = 0; + streamLen = streamLenLB; + } + + // Add Garbage if required. + WebRtcIsac_GetUplinkBandwidth(&instISAC->bwestimator_obj, &bottleneck); + if(instISAC->codingMode == 0) + { + int minBytes; + int limit; + WebRtc_UWord8* ptrGarbage; + + instISAC->MaxDelay = (double)WebRtcIsac_GetUplinkMaxDelay( + &instISAC->bwestimator_obj); + + /* update rate model and get minimum number of bytes in this packet */ + minBytes = WebRtcIsac_GetMinBytes(&(instISAC->rate_data_obj), + streamLen, instISAC->instLB.ISACencLB_obj.current_framesamples, + bottleneck, instISAC->MaxDelay, instISAC->bandwidthKHz); + + /* Make sure MinBytes does not exceed packet size limit */ + if(instISAC->bandwidthKHz == isac8kHz) + { + if(instLB->ISACencLB_obj.current_framesamples == FRAMESAMPLES) + { + limit = instLB->ISACencLB_obj.payloadLimitBytes30; + } + else + { + limit = instLB->ISACencLB_obj.payloadLimitBytes60; + } + } + else + { + limit = instUB->ISACencUB_obj.maxPayloadSizeBytes; + } + minBytes = (minBytes > limit)? limit:minBytes; + + /* Make sure we don't allow more than 255 bytes of garbage data. + We store the length of the garbage data in 8 bits in the bitstream, + 255 is the max garbage length we can signal using 8 bits. */ + if((instISAC->bandwidthKHz == isac8kHz) || + (streamLenUB == 0)) + { + ptrGarbage = &ptrEncodedUW8[streamLenLB]; + limit = streamLen + 255; + } + else + { + ptrGarbage = &ptrEncodedUW8[streamLenLB + 1 + streamLenUB]; + limit = streamLen + (255 - ptrEncodedUW8[streamLenLB]); + } + minBytes = (minBytes > limit)? limit:minBytes; + + garbageLen = (minBytes > streamLen)? (minBytes - streamLen):0; + + /* Save data for creation of multiple bitstreams */ + //ISACencLB_obj->SaveEnc_obj.minBytes = MinBytes; + + /* if bitstream is too short, add garbage at the end */ + if(garbageLen > 0) + { + for(k = 0; k < garbageLen; k++) + { + ptrGarbage[k] = (WebRtc_UWord8)(rand() & 0xFF); + } + + // for a correct length of the upper-band bit-stream together + // with the garbage. Garbage is embeded in upper-band bit-stream. + // That is the only way to preserve backward compatibility. + if((instISAC->bandwidthKHz == isac8kHz) || + (streamLenUB == 0)) + { + ptrEncodedUW8[streamLenLB] = (WebRtc_UWord8)garbageLen; + } + else + { + ptrEncodedUW8[streamLenLB] += (WebRtc_UWord8)garbageLen; + // write the length of the garbage at the end of the upper-band + // bit-stream, if exists. This helps for sanity check. + ptrEncodedUW8[streamLenLB + 1 + streamLenUB] = (WebRtc_UWord8)garbageLen; + + } + + streamLen += garbageLen; + } + } + else + { + /* update rate model */ + WebRtcIsac_UpdateRateModel(&instISAC->rate_data_obj, streamLen, + instISAC->instLB.ISACencLB_obj.current_framesamples, bottleneck); + garbageLen = 0; + } + + // Generate CRC if required. + if((instISAC->bandwidthKHz != isac8kHz) && + (streamLenUB > 0)) + { + WebRtc_UWord32 crc; + + WebRtcIsac_GetCrc((WebRtc_Word16*)(&(ptrEncodedUW8[streamLenLB + 1])), + streamLenUB + garbageLen, &crc); +#ifndef WEBRTC_BIG_ENDIAN + for(k = 0; k < LEN_CHECK_SUM_WORD8; k++) + { + ptrEncodedUW8[streamLen - LEN_CHECK_SUM_WORD8 + k] = + (WebRtc_UWord8)((crc >> (24 - k * 8)) & 0xFF); + } +#else + memcpy(&ptrEncodedUW8[streamLenLB + streamLenUB + 1], &crc, + LEN_CHECK_SUM_WORD8); +#endif + } + + return streamLen; +} + + +/****************************************************************************** + * WebRtcIsac_GetNewBitStream(...) + * + * This function returns encoded data, with the recieved bwe-index in the + * stream. If the rate is set to a value less than bottleneck of codec + * the new bistream will be re-encoded with the given target rate. + * It should always return a complete packet, i.e. only called once + * even for 60 msec frames. + * + * NOTE 1! This function does not write in the ISACStruct, it is not allowed. + * NOTE 3! Rates larger than the bottleneck of the codec will be limited + * to the current bottleneck. + * + * Input: + * - ISAC_main_inst : ISAC instance. + * - bweIndex : Index of bandwidth estimate to put in new + * bitstream + * - rate : target rate of the transcoder is bits/sec. + * Valid values are the accepted rate in iSAC, + * i.e. 10000 to 56000. + * + * Output: + * - encoded : The encoded data vector + * + * Return value : >0 - Length (in bytes) of coded data + * -1 - Error or called in SWB mode + * NOTE! No error code is written to + * the struct since it is only allowed to read + * the struct. + */ +WebRtc_Word16 WebRtcIsac_GetNewBitStream( + ISACStruct* ISAC_main_inst, + WebRtc_Word16 bweIndex, + WebRtc_Word16 jitterInfo, + WebRtc_Word32 rate, + WebRtc_Word16* encoded, + WebRtc_Word16 isRCU) +{ + Bitstr iSACBitStreamInst; /* Local struct for bitstream handling */ + WebRtc_Word16 streamLenLB; + WebRtc_Word16 streamLenUB; + WebRtc_Word16 totalStreamLen; + double gain2; + double gain1; + float scale; + enum ISACBandwidth bandwidthKHz; + double rateLB; + double rateUB; + WebRtc_Word32 currentBN; + ISACMainStruct* instISAC; + WebRtc_UWord8* encodedPtrUW8 = (WebRtc_UWord8*)encoded; + WebRtc_UWord32 crc; +#ifndef WEBRTC_BIG_ENDIAN + WebRtc_Word16 k; +#endif + + instISAC = (ISACMainStruct*)ISAC_main_inst; + + if((instISAC->initFlag & BIT_MASK_ENC_INIT) != + BIT_MASK_ENC_INIT) + { + return -1; + } + + // Get the bottleneck of this iSAC and limit the + // given rate to the current bottleneck. + WebRtcIsac_GetUplinkBw(ISAC_main_inst, ¤tBN); + if(rate > currentBN) + { + rate = currentBN; + } + + if(WebRtcIsac_RateAllocation(rate, &rateLB, &rateUB, &bandwidthKHz) < 0) + { + return -1; + } + + // Cannot transcode from 16 kHz to 12 kHz + if((bandwidthKHz == isac12kHz) && + (instISAC->bandwidthKHz == isac16kHz)) + { + return -1; + } + + // These gains are in dB + // gain for the given rate. + gain1 = WebRtcIsac_GetSnr(rateLB, + instISAC->instLB.ISACencLB_obj.current_framesamples); + // gain of this iSAC + gain2 = WebRtcIsac_GetSnr( + instISAC->instLB.ISACencLB_obj.bottleneck, + instISAC->instLB.ISACencLB_obj.current_framesamples); + + // scale is the ratio of two gains in normal domain. + scale = (float)pow(10, (gain1 - gain2) / 20.0); + // change the scale if this is a RCU bit-stream. + scale = (isRCU)? (scale * RCU_TRANSCODING_SCALE):scale; + + streamLenLB = WebRtcIsac_EncodeStoredDataLb( + &instISAC->instLB.ISACencLB_obj.SaveEnc_obj, &iSACBitStreamInst, + bweIndex, scale); + + if(streamLenLB < 0) + { + return -1; + } + + /* convert from bytes to WebRtc_Word16 */ + memcpy(encoded, iSACBitStreamInst.stream, streamLenLB); + + if(bandwidthKHz == isac8kHz) + { + return streamLenLB; + } + + totalStreamLen = streamLenLB; + // super-wideband is always at 30ms. + // These gains are in dB + // gain for the given rate. + gain1 = WebRtcIsac_GetSnr(rateUB, FRAMESAMPLES); + // gain of this iSAC + gain2 = WebRtcIsac_GetSnr( + instISAC->instUB.ISACencUB_obj.bottleneck, FRAMESAMPLES); + + // scale is the ratio of two gains in normal domain. + scale = (float)pow(10, (gain1 - gain2) / 20.0); + + // change the scale if this is a RCU bit-stream. + scale = (isRCU)? (scale * RCU_TRANSCODING_SCALE_UB):scale; + + switch(instISAC->bandwidthKHz) + { + case isac12kHz: + { + streamLenUB = WebRtcIsac_EncodeStoredDataUb12( + &(instISAC->instUB.ISACencUB_obj.SaveEnc_obj), + &iSACBitStreamInst, jitterInfo, scale); + break; + } + case isac16kHz: + { + streamLenUB = WebRtcIsac_EncodeStoredDataUb16( + &(instISAC->instUB.ISACencUB_obj.SaveEnc_obj), + &iSACBitStreamInst, jitterInfo, scale); + break; + } + default: + return -1; + } + + if(streamLenUB < 0) + { + return -1; + } + + if(streamLenUB + 1 + LEN_CHECK_SUM_WORD8 > 255) + { + return streamLenLB; + } + + totalStreamLen = streamLenLB + streamLenUB + 1 + LEN_CHECK_SUM_WORD8; + encodedPtrUW8[streamLenLB] = streamLenUB + 1 + LEN_CHECK_SUM_WORD8; + + memcpy(&encodedPtrUW8[streamLenLB+1], iSACBitStreamInst.stream, + streamLenUB); + + WebRtcIsac_GetCrc((WebRtc_Word16*)(&(encodedPtrUW8[streamLenLB + 1])), + streamLenUB, &crc); +#ifndef WEBRTC_BIG_ENDIAN + for(k = 0; k < LEN_CHECK_SUM_WORD8; k++) + { + encodedPtrUW8[totalStreamLen - LEN_CHECK_SUM_WORD8 + k] = + (WebRtc_UWord8)((crc >> (24 - k * 8)) & 0xFF); + } +#else + memcpy(&encodedPtrUW8[streamLenLB + streamLenUB + 1], &crc, + LEN_CHECK_SUM_WORD8); +#endif + + + return totalStreamLen; +} + + +/**************************************************************************** + * DecoderInitLb(...) - internal function for initialization of + * Lower Band + * DecoderInitUb(...) - internal function for initialization of + * Upper Band + * WebRtcIsac_DecoderInit(...) - API function + * + * This function initializes a ISAC instance prior to the decoder calls. + * + * Input: + * - ISAC_main_inst : ISAC instance. + * + * Return value + * : 0 - Ok + * -1 - Error + */ +static WebRtc_Word16 DecoderInitLb( + ISACLBStruct* instISAC) +{ + int i; + /* Init stream vector to zero */ + for (i=0; iISACdecLB_obj.bitstr_obj.stream[i] = 0; + } + + WebRtcIsac_InitMasking(&instISAC->ISACdecLB_obj.maskfiltstr_obj); + WebRtcIsac_InitPostFilterbank( + &instISAC->ISACdecLB_obj.postfiltbankstr_obj); + WebRtcIsac_InitPitchFilter(&instISAC->ISACdecLB_obj.pitchfiltstr_obj); + + return (0); +} + +static WebRtc_Word16 DecoderInitUb( + ISACUBStruct* instISAC) +{ + int i; + /* Init stream vector to zero */ + for (i = 0; i < STREAM_SIZE_MAX_60; i++) + { + instISAC->ISACdecUB_obj.bitstr_obj.stream[i] = 0; + } + + WebRtcIsac_InitMasking(&instISAC->ISACdecUB_obj.maskfiltstr_obj); + WebRtcIsac_InitPostFilterbank( + &instISAC->ISACdecUB_obj.postfiltbankstr_obj); + return (0); +} + +WebRtc_Word16 WebRtcIsac_DecoderInit( + ISACStruct *ISAC_main_inst) +{ + ISACMainStruct* instISAC; + + instISAC = (ISACMainStruct*)ISAC_main_inst; + + if(DecoderInitLb(&instISAC->instLB) < 0) + { + return -1; + } + + if(instISAC->decoderSamplingRateKHz == kIsacSuperWideband) + { + memset(instISAC->synthesisFBState1, 0, + FB_STATE_SIZE_WORD32 * sizeof(WebRtc_Word32)); + memset(instISAC->synthesisFBState2, 0, + FB_STATE_SIZE_WORD32 * sizeof(WebRtc_Word32)); + + if(DecoderInitUb(&(instISAC->instUB)) < 0) + { + return -1; + } + } + + if((instISAC->initFlag & BIT_MASK_ENC_INIT) != + BIT_MASK_ENC_INIT) + { + WebRtcIsac_InitBandwidthEstimator(&instISAC->bwestimator_obj, + instISAC->encoderSamplingRateKHz, + instISAC->decoderSamplingRateKHz); + } + + instISAC->initFlag |= BIT_MASK_DEC_INIT; + + instISAC->resetFlag_8kHz = 0; + + return 0; +} + + +/**************************************************************************** + * WebRtcIsac_UpdateBwEstimate(...) + * + * This function updates the estimate of the bandwidth. + * + * Input: + * - ISAC_main_inst : ISAC instance. + * - encoded : encoded ISAC frame(s). + * - packet_size : size of the packet. + * - rtp_seq_number : the RTP number of the packet. + * - arr_ts : the arrival time of the packet (from NetEq) + * in samples. + * + * Return value : 0 - Ok + * -1 - Error + */ +WebRtc_Word16 WebRtcIsac_UpdateBwEstimate( + ISACStruct* ISAC_main_inst, + const WebRtc_UWord16* encoded, + WebRtc_Word32 packet_size, + WebRtc_UWord16 rtp_seq_number, + WebRtc_UWord32 send_ts, + WebRtc_UWord32 arr_ts) +{ + ISACMainStruct *instISAC; + Bitstr streamdata; +#ifndef WEBRTC_BIG_ENDIAN + int k; +#endif + WebRtc_Word16 err; + + /* typecast pointer to real structure */ + instISAC = (ISACMainStruct *)ISAC_main_inst; + + /* check if decoder initiated */ + if((instISAC->initFlag & BIT_MASK_DEC_INIT) != + BIT_MASK_DEC_INIT) + { + instISAC->errorCode = ISAC_DECODER_NOT_INITIATED; + return -1; + } + + if(packet_size <= 0) + { + /* return error code if the packet length is null */ + instISAC->errorCode = ISAC_EMPTY_PACKET; + return -1; + } + + streamdata.W_upper = 0xFFFFFFFF; + streamdata.streamval = 0; + streamdata.stream_index = 0; + +#ifndef WEBRTC_BIG_ENDIAN + for(k = 0; k < 10; k++) + { + streamdata.stream[k] = (WebRtc_UWord8) ((encoded[k>>1] >> + ((k&1) << 3)) & 0xFF); + } +#else + memcpy(streamdata.stream, encoded, 10); +#endif + + err = WebRtcIsac_EstimateBandwidth(&instISAC->bwestimator_obj, &streamdata, + packet_size, rtp_seq_number, send_ts, arr_ts, + instISAC->encoderSamplingRateKHz, + instISAC->decoderSamplingRateKHz); + + if(err < 0) + { + /* return error code if something went wrong */ + instISAC->errorCode = -err; + return -1; + } + + return 0; +} + +static WebRtc_Word16 Decode( + ISACStruct* ISAC_main_inst, + const WebRtc_UWord16* encoded, + WebRtc_Word16 lenEncodedBytes, + WebRtc_Word16* decoded, + WebRtc_Word16* speechType, + WebRtc_Word16 isRCUPayload) +{ + /* number of samples (480 or 960), output from decoder + that were actually used in the encoder/decoder + (determined on the fly) */ + ISACMainStruct* instISAC; + ISACUBDecStruct* decInstUB; + ISACLBDecStruct* decInstLB; + + WebRtc_Word16 numSamplesLB; + WebRtc_Word16 numSamplesUB; + WebRtc_Word16 speechIdx; + float outFrame[MAX_FRAMESAMPLES]; + WebRtc_Word16 outFrameLB[MAX_FRAMESAMPLES]; + WebRtc_Word16 outFrameUB[MAX_FRAMESAMPLES]; + WebRtc_Word16 numDecodedBytesLB; + WebRtc_Word16 numDecodedBytesUB; + WebRtc_Word16 lenEncodedLBBytes; + WebRtc_Word16 validChecksum = 1; + WebRtc_Word16 k; + WebRtc_UWord8* ptrEncodedUW8 = (WebRtc_UWord8*)encoded; + WebRtc_UWord16 numLayer; + WebRtc_Word16 totSizeBytes; + WebRtc_Word16 err; + + instISAC = (ISACMainStruct*)ISAC_main_inst; + decInstUB = &(instISAC->instUB.ISACdecUB_obj); + decInstLB = &(instISAC->instLB.ISACdecLB_obj); + + /* check if decoder initiated */ + if((instISAC->initFlag & BIT_MASK_DEC_INIT) != + BIT_MASK_DEC_INIT) + { + instISAC->errorCode = ISAC_DECODER_NOT_INITIATED; + return -1; + } + + if(lenEncodedBytes <= 0) + { + /* return error code if the packet length is null */ + instISAC->errorCode = ISAC_EMPTY_PACKET; + return -1; + } + + // the size of the rncoded lower-band is bounded by + // STREAM_SIZE_MAX, + // If a payload with the size larger than STREAM_SIZE_MAX + // is received, it is not considered erroneous. + lenEncodedLBBytes = (lenEncodedBytes > STREAM_SIZE_MAX) + ? STREAM_SIZE_MAX:lenEncodedBytes; + + // Copy to lower-band bit-stream structure + memcpy(instISAC->instLB.ISACdecLB_obj.bitstr_obj.stream, ptrEncodedUW8, + lenEncodedLBBytes); + + // Regardless of that the current codec is setup to work in + // wideband or super-wideband, the decoding of the lower-band + // has to be performed. + numDecodedBytesLB = WebRtcIsac_DecodeLb(outFrame, decInstLB, + &numSamplesLB, isRCUPayload); + + // Check for error + if((numDecodedBytesLB < 0) || + (numDecodedBytesLB > lenEncodedLBBytes) || + (numSamplesLB > MAX_FRAMESAMPLES)) + { + instISAC->errorCode = ISAC_LENGTH_MISMATCH; + return -1; + } + + // Error Check, we accept multi-layer bit-stream + // This will limit number of iterations of the + // while loop. Even withouut this the number of iterations + // is limited. + numLayer = 1; + totSizeBytes = numDecodedBytesLB; + while(totSizeBytes != lenEncodedBytes) + { + if((totSizeBytes > lenEncodedBytes) || + (ptrEncodedUW8[totSizeBytes] == 0) || + (numLayer > MAX_NUM_LAYERS)) + { + instISAC->errorCode = ISAC_LENGTH_MISMATCH; + return -1; + } + totSizeBytes += ptrEncodedUW8[totSizeBytes]; + numLayer++; + } + + if(instISAC->decoderSamplingRateKHz == kIsacWideband) + { + for(k = 0; k < numSamplesLB; k++) + { + if(outFrame[k] > 32767) + { + decoded[k] = 32767; + } + else if(outFrame[k] < -32768) + { + decoded[k] = -32768; + } + else + { + decoded[k] = (WebRtc_Word16)WebRtcIsac_lrint(outFrame[k]); + } + } + numSamplesUB = 0; + } + else + { + WebRtc_UWord32 crc; + // We don't accept larger than 30ms (480 samples at lower-band) + // frame-size. + for(k = 0; k < numSamplesLB; k++) + { + if(outFrame[k] > 32767) + { + outFrameLB[k] = 32767; + } + else if(outFrame[k] < -32768) + { + outFrameLB[k] = -32768; + } + else + { + outFrameLB[k] = (WebRtc_Word16)WebRtcIsac_lrint(outFrame[k]); + } + } + + //numSamplesUB = numSamplesLB; + + // Check for possible error, and if upper-band stream exist. + if(numDecodedBytesLB == lenEncodedBytes) + { + // Decoding was successful. No super-wideband bitstream + // exists. + numSamplesUB = numSamplesLB; + memset(outFrameUB, 0, sizeof(WebRtc_Word16) * numSamplesUB); + + // Prepare for the potential increase of signal bandwidth + instISAC->resetFlag_8kHz = 2; + } + else + { + // this includes the check sum and the bytes that stores the + // length + WebRtc_Word16 lenNextStream = ptrEncodedUW8[numDecodedBytesLB]; + + // Is this garbage or valid super-wideband bit-stream? + // Check if checksum is valid + if(lenNextStream <= (LEN_CHECK_SUM_WORD8 + 1)) + { + // such a small second layer cannot be super-wideband layer. + // It must be a short garbage. + validChecksum = 0; + } + else + { + // Run CRC to see if the checksum match. + WebRtcIsac_GetCrc((WebRtc_Word16*)( + &ptrEncodedUW8[numDecodedBytesLB + 1]), + lenNextStream - LEN_CHECK_SUM_WORD8 - 1, &crc); + + validChecksum = 1; + for(k = 0; k < LEN_CHECK_SUM_WORD8; k++) + { + validChecksum &= (((crc >> (24 - k * 8)) & 0xFF) == + ptrEncodedUW8[numDecodedBytesLB + lenNextStream - + LEN_CHECK_SUM_WORD8 + k]); + } + } + + if(!validChecksum) + { + // this is a garbage, we have received a wideband + // bit-stream with garbage + numSamplesUB = numSamplesLB; + memset(outFrameUB, 0, sizeof(WebRtc_Word16) * numSamplesUB); + } + else + { + // A valid super-wideband biststream exists. + enum ISACBandwidth bandwidthKHz; + WebRtc_Word32 maxDelayBit; + + //instISAC->bwestimator_obj.incomingStreamSampFreq = + // kIsacSuperWideband; + // If we have super-wideband bit-stream, we cannot + // have 60 ms frame-size. + if(numSamplesLB > FRAMESAMPLES) + { + instISAC->errorCode = ISAC_LENGTH_MISMATCH; + return -1; + } + + // the rest of the bit-stream contains the upper-band + // bit-stream curently this is the only thing there, + // however, we might add more layers. + + // Have to exclude one byte where the length is stored + // and last 'LEN_CHECK_SUM_WORD8' bytes where the + // checksum is stored. + lenNextStream -= (LEN_CHECK_SUM_WORD8 + 1); + + memcpy(decInstUB->bitstr_obj.stream, + &ptrEncodedUW8[numDecodedBytesLB + 1], lenNextStream); + + // THIS IS THE FIRST DECODING + decInstUB->bitstr_obj.W_upper = 0xFFFFFFFF; + decInstUB->bitstr_obj.streamval = 0; + decInstUB->bitstr_obj.stream_index = 0; + + // Decode jitter infotmation + err = WebRtcIsac_DecodeJitterInfo(&decInstUB->bitstr_obj, + &maxDelayBit); + // error check + if(err < 0) + { + instISAC->errorCode = -err; + return -1; + } + + // Update jitter info which is in the upper-band bit-stream + // only if the encoder is in super-wideband. Otherwise, + // the jitter info is already embeded in bandwidth index + // and has been updated. + if(instISAC->encoderSamplingRateKHz == kIsacSuperWideband) + { + err = WebRtcIsac_UpdateUplinkJitter( + &(instISAC->bwestimator_obj), maxDelayBit); + if(err < 0) + { + instISAC->errorCode = -err; + return -1; + } + } + + // decode bandwidth information + err = WebRtcIsac_DecodeBandwidth(&decInstUB->bitstr_obj, + &bandwidthKHz); + if(err < 0) + { + instISAC->errorCode = -err; + return -1; + } + + switch(bandwidthKHz) + { + case isac12kHz: + { + numDecodedBytesUB = WebRtcIsac_DecodeUb12(outFrame, + decInstUB, isRCUPayload); + + // Hang-over for transient alleviation - + // wait two frames to add the upper band going up from 8 kHz + if (instISAC->resetFlag_8kHz > 0) + { + if (instISAC->resetFlag_8kHz == 2) + { + // Silence first and a half frame + memset(outFrame, 0, MAX_FRAMESAMPLES * + sizeof(float)); + } + else + { + const float rampStep = 2.0f / MAX_FRAMESAMPLES; + float rampVal = 0; + memset(outFrame, 0, (MAX_FRAMESAMPLES>>1) * + sizeof(float)); + + // Ramp up second half of second frame + for(k = MAX_FRAMESAMPLES/2; k < MAX_FRAMESAMPLES; k++) + { + outFrame[k] *= rampVal; + rampVal += rampStep; + } + } + instISAC->resetFlag_8kHz -= 1; + } + + break; + } + case isac16kHz: + { + numDecodedBytesUB = WebRtcIsac_DecodeUb16(outFrame, + decInstUB, isRCUPayload); + break; + } + default: + return -1; + } + + // it might be less due to garbage. + if((numDecodedBytesUB != lenNextStream) && + (numDecodedBytesUB != (lenNextStream - ptrEncodedUW8[ + numDecodedBytesLB + 1 + numDecodedBytesUB]))) + { + instISAC->errorCode = ISAC_LENGTH_MISMATCH; + return -1; + } + + // If there is no error Upper-band always decodes + // 30 ms (480 samples) + numSamplesUB = FRAMESAMPLES; + + // Convert to W16 + for(k = 0; k < numSamplesUB; k++) + { + if(outFrame[k] > 32767) + { + outFrameUB[k] = 32767; + } + else if(outFrame[k] < -32768) + { + outFrameUB[k] = -32768; + } + else + { + outFrameUB[k] = (WebRtc_Word16)WebRtcIsac_lrint( + outFrame[k]); + } + } + } + } + + speechIdx = 0; + while(speechIdx < numSamplesLB) + { + WebRtcSpl_SynthesisQMF(&outFrameLB[speechIdx], + &outFrameUB[speechIdx], &decoded[(speechIdx<<1)], + instISAC->synthesisFBState1, instISAC->synthesisFBState2); + + speechIdx += FRAMESAMPLES_10ms; + } + } + *speechType = 0; + return (numSamplesLB + numSamplesUB); +} + + + + + + + +/**************************************************************************** + * WebRtcIsac_Decode(...) + * + * This function decodes a ISAC frame. Output speech length + * will be a multiple of 480 samples: 480 or 960 samples, + * depending on the frameSize (30 or 60 ms). + * + * Input: + * - ISAC_main_inst : ISAC instance. + * - encoded : encoded ISAC frame(s) + * - len : bytes in encoded vector + * + * Output: + * - decoded : The decoded vector + * + * Return value : >0 - number of samples in decoded vector + * -1 - Error + */ + +WebRtc_Word16 WebRtcIsac_Decode( + ISACStruct* ISAC_main_inst, + const WebRtc_UWord16* encoded, + WebRtc_Word16 lenEncodedBytes, + WebRtc_Word16* decoded, + WebRtc_Word16* speechType) +{ + WebRtc_Word16 isRCUPayload = 0; + return Decode(ISAC_main_inst, encoded, lenEncodedBytes, decoded, + speechType, isRCUPayload); +} + +/**************************************************************************** + * WebRtcIsac_DecodeRcu(...) + * + * This function decodes a redundant (RCU) iSAC frame. Function is called in + * NetEq with a stored RCU payload i case of packet loss. Output speech length + * will be a multiple of 480 samples: 480 or 960 samples, + * depending on the framesize (30 or 60 ms). + * + * Input: + * - ISAC_main_inst : ISAC instance. + * - encoded : encoded ISAC RCU frame(s) + * - len : bytes in encoded vector + * + * Output: + * - decoded : The decoded vector + * + * Return value : >0 - number of samples in decoded vector + * -1 - Error + */ + + + +WebRtc_Word16 WebRtcIsac_DecodeRcu( + ISACStruct* ISAC_main_inst, + const WebRtc_UWord16* encoded, + WebRtc_Word16 lenEncodedBytes, + WebRtc_Word16* decoded, + WebRtc_Word16* speechType) +{ + WebRtc_Word16 isRCUPayload = 1; + return Decode(ISAC_main_inst, encoded, lenEncodedBytes, decoded, + speechType, isRCUPayload); +} + + +/**************************************************************************** + * WebRtcIsac_DecodePlc(...) + * + * This function conducts PLC for ISAC frame(s). Output speech length + * will be a multiple of 480 samples: 480 or 960 samples, + * depending on the frameSize (30 or 60 ms). + * + * Input: + * - ISAC_main_inst : ISAC instance. + * - noOfLostFrames : Number of PLC frames to produce + * + * Output: + * - decoded : The decoded vector + * + * Return value : >0 - number of samples in decoded PLC vector + * -1 - Error + */ +WebRtc_Word16 WebRtcIsac_DecodePlc( + ISACStruct* ISAC_main_inst, + WebRtc_Word16* decoded, + WebRtc_Word16 noOfLostFrames) +{ + WebRtc_Word16 numSamples; + ISACMainStruct* instISAC; + + + /* typecast pointer to real structure */ + instISAC = (ISACMainStruct*)ISAC_main_inst; + + /* Limit number of frames to two = 60 msec. Otherwise we exceed data vectors */ + if(noOfLostFrames > 2) + { + noOfLostFrames = 2; + } + + /* Get the number of samples per frame */ + switch(instISAC->decoderSamplingRateKHz) + { + case kIsacWideband: + { + numSamples = 480 * noOfLostFrames; + break; + } + case kIsacSuperWideband: + { + numSamples = 960 * noOfLostFrames; + break; + } + default: + return -1; + } + + /* Set output samples to zero */ + memset(decoded, 0, numSamples * sizeof(WebRtc_Word16)); + return numSamples; +} + + +/**************************************************************************** + * ControlLb(...) - Internal function for controling Lower Band + * ControlUb(...) - Internal function for controling Upper Band + * WebRtcIsac_Control(...) - API function + * + * This function sets the limit on the short-term average bit rate and the + * frame length. Should be used only in Instantaneous mode. + * + * Input: + * - ISAC_main_inst : ISAC instance. + * - rate : limit on the short-term average bit rate, + * in bits/second (between 10000 and 32000) + * - frameSize : number of milliseconds per frame (30 or 60) + * + * Return value : 0 - ok + * -1 - Error + */ +static WebRtc_Word16 ControlLb( + ISACLBStruct* instISAC, + double rate, + WebRtc_Word16 frameSize) +{ + if((rate >= 10000) && (rate <= 32000)) + { + instISAC->ISACencLB_obj.bottleneck = rate; + } + else + { + return -ISAC_DISALLOWED_BOTTLENECK; + } + + if((frameSize == 30) || (frameSize == 60)) + { + instISAC->ISACencLB_obj.new_framelength = (FS/1000) * frameSize; + } + else + { + return -ISAC_DISALLOWED_FRAME_LENGTH; + } + + return 0; +} + +static WebRtc_Word16 ControlUb( + ISACUBStruct* instISAC, + double rate) +{ + if((rate >= 10000) && (rate <= 32000)) + { + instISAC->ISACencUB_obj.bottleneck = rate; + } + else + { + return -ISAC_DISALLOWED_BOTTLENECK; + } + return 0; +} + +WebRtc_Word16 WebRtcIsac_Control( + ISACStruct* ISAC_main_inst, + WebRtc_Word32 bottleneckBPS, + WebRtc_Word16 frameSize) +{ + ISACMainStruct *instISAC; + WebRtc_Word16 status; + double rateLB; + double rateUB; + enum ISACBandwidth bandwidthKHz; + + + /* Typecast pointer to real structure */ + instISAC = (ISACMainStruct*)ISAC_main_inst; + + if(instISAC->codingMode == 0) + { + /* in adaptive mode */ + instISAC->errorCode = ISAC_MODE_MISMATCH; + return -1; + } + + /* check if encoder initiated */ + if((instISAC->initFlag & BIT_MASK_ENC_INIT) != + BIT_MASK_ENC_INIT) + { + instISAC->errorCode = ISAC_ENCODER_NOT_INITIATED; + return -1; + } + + if(instISAC->encoderSamplingRateKHz == kIsacWideband) + { + // if the sampling rate is 16kHz then bandwith should be 8kHz, + // regardless of bottleneck. + bandwidthKHz = isac8kHz; + rateLB = (bottleneckBPS > 32000)? 32000:bottleneckBPS; + rateUB = 0; + } + else + { + if(WebRtcIsac_RateAllocation(bottleneckBPS, &rateLB, &rateUB, + &bandwidthKHz) < 0) + { + return -1; + } + } + + if((instISAC->encoderSamplingRateKHz == kIsacSuperWideband) && + (frameSize != 30) && + (bandwidthKHz != isac8kHz)) + { + // Cannot have 60 ms in super-wideband + instISAC->errorCode = ISAC_DISALLOWED_FRAME_LENGTH; + return -1; + } + + status = ControlLb(&instISAC->instLB, rateLB, frameSize); + if(status < 0) + { + instISAC->errorCode = -status; + return -1; + } + if(bandwidthKHz != isac8kHz) + { + status = ControlUb(&(instISAC->instUB), rateUB); + if(status < 0) + { + instISAC->errorCode = -status; + return -1; + } + } + + // + // Check if bandwidth is changing from wideband to super-wideband + // then we have to synch data buffer of lower & upper-band. also + // clean up the upper-band data buffer. + // + if((instISAC->bandwidthKHz == isac8kHz) && + (bandwidthKHz != isac8kHz)) + { + memset(instISAC->instUB.ISACencUB_obj.data_buffer_float, 0, + sizeof(float) * (MAX_FRAMESAMPLES + LB_TOTAL_DELAY_SAMPLES)); + + if(bandwidthKHz == isac12kHz) + { + instISAC->instUB.ISACencUB_obj.buffer_index = + instISAC->instLB.ISACencLB_obj.buffer_index; + } + else + { + instISAC->instUB.ISACencUB_obj.buffer_index = LB_TOTAL_DELAY_SAMPLES + + instISAC->instLB.ISACencLB_obj.buffer_index; + + memcpy(&(instISAC->instUB.ISACencUB_obj.lastLPCVec), + WebRtcIsac_kMeanLarUb16, sizeof(double) * UB_LPC_ORDER); + } + } + + // update the payload limit it the bandwidth is changing. + if(instISAC->bandwidthKHz != bandwidthKHz) + { + instISAC->bandwidthKHz = bandwidthKHz; + UpdatePayloadSizeLimit(instISAC); + } + instISAC->bottleneck = bottleneckBPS; + return 0; +} + + +/**************************************************************************** + * WebRtcIsac_ControlBwe(...) + * + * This function sets the initial values of bottleneck and frame-size if + * iSAC is used in channel-adaptive mode. Through this API, users can + * enforce a frame-size for all values of bottleneck. Then iSAC will not + * automatically change the frame-size. + * + * + * Input: + * - ISAC_main_inst : ISAC instance. + * - rateBPS : initial value of bottleneck in bits/second + * 10000 <= rateBPS <= 32000 is accepted + * For default bottleneck set rateBPS = 0 + * - frameSizeMs : number of milliseconds per frame (30 or 60) + * - enforceFrameSize : 1 to enforce the given frame-size through out + * the adaptation process, 0 to let iSAC change + * the frame-size if required. + * + * Return value : 0 - ok + * -1 - Error + */ +WebRtc_Word16 WebRtcIsac_ControlBwe( + ISACStruct* ISAC_main_inst, + WebRtc_Word32 bottleneckBPS, + WebRtc_Word16 frameSizeMs, + WebRtc_Word16 enforceFrameSize) +{ + ISACMainStruct *instISAC; + enum ISACBandwidth bandwidth; + + /* Typecast pointer to real structure */ + instISAC = (ISACMainStruct *)ISAC_main_inst; + + /* check if encoder initiated */ + if((instISAC->initFlag & BIT_MASK_ENC_INIT) != + BIT_MASK_ENC_INIT) + { + instISAC->errorCode = ISAC_ENCODER_NOT_INITIATED; + return -1; + } + + /* Check that we are in channel-adaptive mode, otherwise, return (-1) */ + if(instISAC->codingMode != 0) + { + instISAC->errorCode = ISAC_MODE_MISMATCH; + return -1; + } + if((frameSizeMs != 30) && + (instISAC->encoderSamplingRateKHz == kIsacSuperWideband)) + { + return -1; + } + + /* Set struct variable if enforceFrameSize is set. ISAC will then */ + /* keep the chosen frame size. */ + if((enforceFrameSize != 0) /*|| + (instISAC->samplingRateKHz == kIsacSuperWideband)*/) + { + instISAC->instLB.ISACencLB_obj.enforceFrameSize = 1; + } + else + { + instISAC->instLB.ISACencLB_obj.enforceFrameSize = 0; + } + + /* Set initial rate, if value between 10000 and 32000, */ + /* if rateBPS is 0, keep the default initial bottleneck value (15000) */ + if(bottleneckBPS != 0) + { + double rateLB; + double rateUB; + if(WebRtcIsac_RateAllocation(bottleneckBPS, &rateLB, &rateUB, &bandwidth) < 0) + { + return -1; + } + instISAC->bwestimator_obj.send_bw_avg = (float)bottleneckBPS; + instISAC->bandwidthKHz = bandwidth; + } + + /* Set initial frameSize. If enforceFrameSize is set the frame size will + not change */ + if(frameSizeMs != 0) + { + if((frameSizeMs == 30) || (frameSizeMs == 60)) + { + instISAC->instLB.ISACencLB_obj.new_framelength = (FS/1000) * + frameSizeMs; + //instISAC->bwestimator_obj.rec_header_rate = ((float)HEADER_SIZE * + // 8.0f * 1000.0f / (float)frameSizeMs); + } + else + { + instISAC->errorCode = ISAC_DISALLOWED_FRAME_LENGTH; + return -1; + } + } + return 0; +} + + +/**************************************************************************** + * WebRtcIsac_GetDownLinkBwIndex(...) + * + * This function returns index representing the Bandwidth estimate from + * other side to this side. + * + * Input: + * - ISAC_main_inst : iSAC struct + * + * Output: + * - bweIndex : Bandwidth estimate to transmit to other side. + * + */ +WebRtc_Word16 WebRtcIsac_GetDownLinkBwIndex( + ISACStruct* ISAC_main_inst, + WebRtc_Word16* bweIndex, + WebRtc_Word16* jitterInfo) +{ + ISACMainStruct *instISAC; + + /* typecast pointer to real structure */ + instISAC = (ISACMainStruct*)ISAC_main_inst; + + /* check if encoder initiated */ + if((instISAC->initFlag & BIT_MASK_DEC_INIT) != + BIT_MASK_DEC_INIT) + { + instISAC->errorCode = ISAC_ENCODER_NOT_INITIATED; + return -1; + } + + /* Call function to get Bandwidth Estimate */ + WebRtcIsac_GetDownlinkBwJitIndexImpl(&(instISAC->bwestimator_obj), + bweIndex, jitterInfo, instISAC->decoderSamplingRateKHz); + return 0; +} + + +/**************************************************************************** + * WebRtcIsac_UpdateUplinkBw(...) + * + * This function takes an index representing the Bandwidth estimate from + * this side to other side and updates BWE. + * + * Input: + * - ISAC_main_inst : iSAC struct + * - rateIndex : Bandwidth estimate from other side. + * + * Return value : 0 - ok + * -1 - index out of range + */ +WebRtc_Word16 WebRtcIsac_UpdateUplinkBw( + ISACStruct* ISAC_main_inst, + WebRtc_Word16 bweIndex) +{ + ISACMainStruct *instISAC; + WebRtc_Word16 returnVal; + + /* typecast pointer to real structure */ + instISAC = (ISACMainStruct *)ISAC_main_inst; + + /* check if encoder initiated */ + if((instISAC->initFlag & BIT_MASK_ENC_INIT) != + BIT_MASK_ENC_INIT) + { + instISAC->errorCode = ISAC_ENCODER_NOT_INITIATED; + return -1; + } + + /* Call function to get Bandwidth Estimate */ + returnVal = WebRtcIsac_UpdateUplinkBwImpl( + &(instISAC->bwestimator_obj), bweIndex, + instISAC->encoderSamplingRateKHz); + + if(returnVal < 0) + { + instISAC->errorCode = -returnVal; + return -1; + } + else + { + return 0; + } +} + + +/**************************************************************************** + * WebRtcIsac_ReadBwIndex(...) + * + * This function returns the index of the Bandwidth estimate from the + * bitstream. + * + * Input: + * - encoded : Encoded bitstream + * + * Output: + * - frameLength : Length of frame in packet (in samples) + * - bweIndex : Bandwidth estimate in bitstream + * + */ +WebRtc_Word16 WebRtcIsac_ReadBwIndex( + const WebRtc_Word16* encoded, + WebRtc_Word16* bweIndex) +{ + Bitstr streamdata; +#ifndef WEBRTC_BIG_ENDIAN + int k; +#endif + WebRtc_Word16 err; + + streamdata.W_upper = 0xFFFFFFFF; + streamdata.streamval = 0; + streamdata.stream_index = 0; + +#ifndef WEBRTC_BIG_ENDIAN + for(k = 0; k < 10; k++) + { + streamdata.stream[k] = (WebRtc_UWord8) ((encoded[k>>1] >> + ((k&1) << 3)) & 0xFF); + } +#else + memcpy(streamdata.stream, encoded, 10); +#endif + + /* decode frame length */ + err = WebRtcIsac_DecodeFrameLen(&streamdata, bweIndex); + if(err < 0) + { + return err; + } + + /* decode BW estimation */ + err = WebRtcIsac_DecodeSendBW(&streamdata, bweIndex); + if(err < 0) + { + return err; + } + + return 0; +} + + +/**************************************************************************** + * WebRtcIsac_ReadFrameLen(...) + * + * This function returns the length of the frame represented in the packet. + * + * Input: + * - encoded : Encoded bitstream + * + * Output: + * - frameLength : Length of frame in packet (in samples) + * + */ +WebRtc_Word16 WebRtcIsac_ReadFrameLen( + ISACStruct* ISAC_main_inst, + const WebRtc_Word16* encoded, + WebRtc_Word16* frameLength) +{ + Bitstr streamdata; +#ifndef WEBRTC_BIG_ENDIAN + int k; +#endif + WebRtc_Word16 err; + ISACMainStruct* instISAC; + + streamdata.W_upper = 0xFFFFFFFF; + streamdata.streamval = 0; + streamdata.stream_index = 0; + +#ifndef WEBRTC_BIG_ENDIAN + for (k=0; k<10; k++) { + streamdata.stream[k] = (WebRtc_UWord8) ((encoded[k>>1] >> + ((k&1) << 3)) & 0xFF); + } +#else + memcpy(streamdata.stream, encoded, 10); +#endif + + /* decode frame length */ + err = WebRtcIsac_DecodeFrameLen(&streamdata, frameLength); + if(err < 0) { + return -1; + } + instISAC = (ISACMainStruct*)ISAC_main_inst; + + if(instISAC->decoderSamplingRateKHz == kIsacSuperWideband) + { + // the decoded frame length indicates the number of samples in + // lower-band in this case, multiply by 2 to get the total number + // of samples. + *frameLength <<= 1; + } + + return 0; +} + + +/******************************************************************************* + * WebRtcIsac_GetNewFrameLen(...) + * + * returns the frame lenght (in samples) of the next packet. In the case of + * channel-adaptive mode, iSAC decides on its frame lenght based on the + * estimated bottleneck this allows a user to prepare for the next packet + * (at the encoder). + * + * The primary usage is in CE to make the iSAC works in channel-adaptive mode + * + * Input: + * - ISAC_main_inst : iSAC struct + * + * Return Value : frame lenght in samples + * + */ +WebRtc_Word16 WebRtcIsac_GetNewFrameLen( + ISACStruct *ISAC_main_inst) +{ + ISACMainStruct *instISAC; + + /* typecast pointer to real structure */ + instISAC = (ISACMainStruct *)ISAC_main_inst; + + /* Return new frame length */ + if(instISAC->encoderSamplingRateKHz == kIsacWideband) + { + return (instISAC->instLB.ISACencLB_obj.new_framelength); + } + else + { + return ((instISAC->instLB.ISACencLB_obj.new_framelength) << 1); + } +} + + +/**************************************************************************** + * WebRtcIsac_GetErrorCode(...) + * + * This function can be used to check the error code of an iSAC instance. + * When a function returns -1 a error code will be set for that instance. + * The function below extract the code of the last error that occured in + * the specified instance. + * + * Input: + * - ISAC_main_inst : ISAC instance + * + * Return value : Error code + */ +WebRtc_Word16 WebRtcIsac_GetErrorCode( + ISACStruct *ISAC_main_inst) +{ + ISACMainStruct *instISAC; + /* typecast pointer to real structure */ + instISAC = (ISACMainStruct *)ISAC_main_inst; + + return (instISAC->errorCode); +} + + +/**************************************************************************** + * WebRtcIsac_GetUplinkBw(...) + * + * This function outputs the target bottleneck of the codec. In + * channel-adaptive mode, the target bottleneck is specified through in-band + * signalling retreived by bandwidth estimator. + * In channel-independent, also called instantaneous mode, the target + * bottleneck is provided to the encoder by calling xxx_control(...) (if + * xxx_control is never called the default values is). + * Note that the output is the iSAC internal operating bottleneck whch might + * differ slightly from the one provided through xxx_control(). + * + * Input: + * - ISAC_main_inst : iSAC instance + * + * Output: + * - *bottleneck : bottleneck in bits/sec + * + * Return value : -1 if error happens + * 0 bit-rates computed correctly. + */ +WebRtc_Word16 WebRtcIsac_GetUplinkBw( + ISACStruct* ISAC_main_inst, + WebRtc_Word32* bottleneck) +{ + ISACMainStruct* instISAC = (ISACMainStruct *)ISAC_main_inst; + + if(instISAC->codingMode == 0) + { + // we are in adaptive mode then get the bottleneck from BWE + *bottleneck = (WebRtc_Word32)instISAC->bwestimator_obj.send_bw_avg; + } + else + { + *bottleneck = instISAC->bottleneck; + } + + if((*bottleneck > 32000) && (*bottleneck < 38000)) + { + *bottleneck = 32000; + } + else if((*bottleneck > 45000) && (*bottleneck < 50000)) + { + *bottleneck = 45000; + } + else if(*bottleneck > 56000) + { + *bottleneck = 56000; + } + + return 0; +} + + +/****************************************************************************** + * WebRtcIsac_SetMaxPayloadSize(...) + * + * This function sets a limit for the maximum payload size of iSAC. The same + * value is used both for 30 and 60 ms packets. If the encoder sampling rate + * is 16 kHz the maximum payload size is between 120 and 400 bytes. If the + * encoder sampling rate is 32 kHz the maximum payload size is between 120 + * and 600 bytes. + * + * --------------- + * IMPORTANT NOTES + * --------------- + * The size of a packet is limited to the minimum of 'max-payload-size' and + * 'max-rate.' For instance, let's assume the max-payload-size is set to + * 170 bytes, and max-rate is set to 40 kbps. Note that a limit of 40 kbps + * translates to 150 bytes for 30ms frame-size & 300 bytes for 60ms + * frame-size. Then a packet with a frame-size of 30 ms is limited to 150, + * i.e. min(170, 150), and a packet with 60 ms frame-size is limited to + * 170 bytes, i.e. min(170, 300). + * + * Input: + * - ISAC_main_inst : iSAC instance + * - maxPayloadBytes : maximum size of the payload in bytes + * valid values are between 100 and 400 bytes + * if encoder sampling rate is 16 kHz. For + * 32 kHz encoder sampling rate valid values + * are between 100 and 600 bytes. + * + * Return value : 0 if successful + * -1 if error happens + */ +WebRtc_Word16 WebRtcIsac_SetMaxPayloadSize( + ISACStruct* ISAC_main_inst, + WebRtc_Word16 maxPayloadBytes) +{ + ISACMainStruct *instISAC; + WebRtc_Word16 status = 0; + + /* typecast pointer to real structure */ + instISAC = (ISACMainStruct *)ISAC_main_inst; + + /* check if encoder initiated */ + if((instISAC->initFlag & BIT_MASK_ENC_INIT) != + BIT_MASK_ENC_INIT) + { + instISAC->errorCode = ISAC_ENCODER_NOT_INITIATED; + return -1; + } + + if(instISAC->encoderSamplingRateKHz == kIsacSuperWideband) + { + // sanity check + if(maxPayloadBytes < 120) + { + // maxRate is out of valid range + // set to the acceptable value and return -1. + maxPayloadBytes = 120; + status = -1; + } + + /* sanity check */ + if(maxPayloadBytes > STREAM_SIZE_MAX) + { + // maxRate is out of valid range + // set to the acceptable value and return -1. + maxPayloadBytes = STREAM_SIZE_MAX; + status = -1; + } + } + else + { + if(maxPayloadBytes < 120) + { + // max payload-size is out of valid range + // set to the acceptable value and return -1. + maxPayloadBytes = 120; + status = -1; + } + if(maxPayloadBytes > STREAM_SIZE_MAX_60) + { + // max payload-size is out of valid range + // set to the acceptable value and return -1. + maxPayloadBytes = STREAM_SIZE_MAX_60; + status = -1; + } + } + instISAC->maxPayloadSizeBytes = maxPayloadBytes; + UpdatePayloadSizeLimit(instISAC); + return status; +} + + +/****************************************************************************** + * WebRtcIsac_SetMaxRate(...) + * + * This function sets the maximum rate which the codec may not exceed for + * any signal packet. The maximum rate is defined and payload-size per + * frame-size in bits per second. + * + * The codec has a maximum rate of 53400 bits per second (200 bytes per 30 + * ms) if the encoder sampling rate is 16kHz, and 160 kbps (600 bytes/30 ms) + * if the encoder sampling rate is 32 kHz. + * + * It is possible to set a maximum rate between 32000 and 53400 bits/sec + * in wideband mode, and 32000 to 160000 bits/sec in super-wideband mode. + * + * --------------- + * IMPORTANT NOTES + * --------------- + * The size of a packet is limited to the minimum of 'max-payload-size' and + * 'max-rate.' For instance, let's assume the max-payload-size is set to + * 170 bytes, and max-rate is set to 40 kbps. Note that a limit of 40 kbps + * translates to 150 bytes for 30ms frame-size & 300 bytes for 60ms + * frame-size. Then a packet with a frame-size of 30 ms is limited to 150, + * i.e. min(170, 150), and a packet with 60 ms frame-size is limited to + * 170 bytes, min(170, 300). + * + * Input: + * - ISAC_main_inst : iSAC instance + * - maxRate : maximum rate in bits per second, + * valid values are 32000 to 53400 bits/sec in + * wideband mode, and 32000 to 160000 bits/sec in + * super-wideband mode. + * + * Return value : 0 if successful + * -1 if error happens + */ +WebRtc_Word16 WebRtcIsac_SetMaxRate( + ISACStruct* ISAC_main_inst, + WebRtc_Word32 maxRate) +{ + ISACMainStruct *instISAC; + WebRtc_Word16 maxRateInBytesPer30Ms; + WebRtc_Word16 status = 0; + + /* typecast pointer to real structure */ + instISAC = (ISACMainStruct *)ISAC_main_inst; + + /* check if encoder initiated */ + if((instISAC->initFlag & BIT_MASK_ENC_INIT) != + BIT_MASK_ENC_INIT) + { + instISAC->errorCode = ISAC_ENCODER_NOT_INITIATED; + return -1; + } + /* + Calculate maximum number of bytes per 30 msec packets for the + given maximum rate. Multiply with 30/1000 to get number of + bits per 30 ms, divide by 8 to get number of bytes per 30 ms: + maxRateInBytes = floor((maxRate * 30/1000) / 8); + */ + maxRateInBytesPer30Ms = (WebRtc_Word16)(maxRate*3/800); + + if(instISAC->encoderSamplingRateKHz == kIsacWideband) + { + if(maxRate < 32000) + { + // max rate is out of valid range + // set to the acceptable value and return -1. + maxRateInBytesPer30Ms = 120; + status = -1; + } + + if(maxRate > 53400) + { + // max rate is out of valid range + // set to the acceptable value and return -1. + maxRateInBytesPer30Ms = 200; + status = -1; + } + } + else + { + if(maxRateInBytesPer30Ms < 120) + { + // maxRate is out of valid range + // set to the acceptable value and return -1. + maxRateInBytesPer30Ms = 120; + status = -1; + } + + if(maxRateInBytesPer30Ms > STREAM_SIZE_MAX) + { + // maxRate is out of valid range + // set to the acceptable value and return -1. + maxRateInBytesPer30Ms = STREAM_SIZE_MAX; + status = -1; + } + } + instISAC->maxRateBytesPer30Ms = maxRateInBytesPer30Ms; + UpdatePayloadSizeLimit(instISAC); + return status; +} + + +/**************************************************************************** + * WebRtcIsac_GetRedPayload(...) + * + * Populates "encoded" with the redundant payload of the recently encoded + * frame. This function has to be called once that WebRtcIsac_Encode(...) + * returns a positive value. Regardless of the frame-size this function will + * be called only once after encoding is completed. The bit-stream is + * targeted for 16000 bit/sec. + * + * Input: + * - ISAC_main_inst : iSAC struct + * + * Output: + * - encoded : the encoded data vector + * + * + * Return value : >0 - Length (in bytes) of coded data + * : -1 - Error + * + * + */ +WebRtc_Word16 WebRtcIsac_GetRedPayload( + ISACStruct* ISAC_main_inst, + WebRtc_Word16* encoded) +{ + ISACMainStruct* instISAC; + Bitstr iSACBitStreamInst; + WebRtc_Word16 streamLenLB; + WebRtc_Word16 streamLenUB; + WebRtc_Word16 streamLen; + WebRtc_Word16 totalLenUB; + WebRtc_UWord8* ptrEncodedUW8 = (WebRtc_UWord8*)encoded; +#ifndef WEBRTC_BIG_ENDIAN + int k; +#endif + + /* typecast pointer to real structure */ + instISAC = (ISACMainStruct*)ISAC_main_inst; + + + if((instISAC->initFlag & BIT_MASK_ENC_INIT) != + BIT_MASK_ENC_INIT) + { + instISAC->errorCode = ISAC_ENCODER_NOT_INITIATED; + } + + + iSACBitStreamInst.W_upper = 0xFFFFFFFF; + iSACBitStreamInst.streamval = 0; + iSACBitStreamInst.stream_index = 0; + + + streamLenLB = WebRtcIsac_EncodeStoredDataLb( + &instISAC->instLB.ISACencLB_obj.SaveEnc_obj, + &iSACBitStreamInst, + instISAC->instLB.ISACencLB_obj.lastBWIdx, + RCU_TRANSCODING_SCALE); + + if(streamLenLB < 0) + { + return -1; + } + + /* convert from bytes to WebRtc_Word16 */ + memcpy(ptrEncodedUW8, iSACBitStreamInst.stream, streamLenLB); + + streamLen = streamLenLB; + + if(instISAC->bandwidthKHz == isac8kHz) + { + return streamLenLB; + } + + streamLenUB = WebRtcIsac_GetRedPayloadUb( + &instISAC->instUB.ISACencUB_obj.SaveEnc_obj, + &iSACBitStreamInst, instISAC->bandwidthKHz); + + if(streamLenUB < 0) + { + // an error has happened but this is not the error due to a + // bit-stream larger than the limit + return -1; + } + + // We have one byte to write the total length of the upper band + // the length include the bitstream length, check-sum and the + // single byte where the length is written to. This is according to + // iSAC wideband and how the "garbage" is dealt. + totalLenUB = streamLenUB + 1 + LEN_CHECK_SUM_WORD8; + if(totalLenUB > 255) + { + streamLenUB = 0; + } + + // Generate CRC if required. + if((instISAC->bandwidthKHz != isac8kHz) && + (streamLenUB > 0)) + { + WebRtc_UWord32 crc; + streamLen += totalLenUB; + ptrEncodedUW8[streamLenLB] = (WebRtc_UWord8)totalLenUB; + memcpy(&ptrEncodedUW8[streamLenLB+1], iSACBitStreamInst.stream, streamLenUB); + + WebRtcIsac_GetCrc((WebRtc_Word16*)(&(ptrEncodedUW8[streamLenLB + 1])), + streamLenUB, &crc); +#ifndef WEBRTC_BIG_ENDIAN + for(k = 0; k < LEN_CHECK_SUM_WORD8; k++) + { + ptrEncodedUW8[streamLen - LEN_CHECK_SUM_WORD8 + k] = + (WebRtc_UWord8)((crc >> (24 - k * 8)) & 0xFF); + } +#else + memcpy(&ptrEncodedUW8[streamLenLB + streamLenUB + 1], &crc, + LEN_CHECK_SUM_WORD8); +#endif + } + + + return streamLen; +} + + +/**************************************************************************** + * WebRtcIsac_version(...) + * + * This function returns the version number. + * + * Output: + * - version : Pointer to character string + * + */ +void WebRtcIsac_version(char *version) +{ + strcpy(version, "4.3.0"); +} + + +/****************************************************************************** + * WebRtcIsac_SetEncSampRate() + * Set the sampling rate of the encoder. Initialization of the encoder WILL + * NOT overwrite the sampling rate of the encoder. The default value is 16 kHz + * which is set when the instance is created. The encoding-mode and the + * bottleneck remain unchanged by this call, however, the maximum rate and + * maximum payload-size will reset to their default value. + * + * Input: + * - ISAC_main_inst : iSAC instance + * - sampRate : enumerator specifying the sampling rate. + * + * Return value : 0 if successful + * -1 if failed. + */ +WebRtc_Word16 WebRtcIsac_SetEncSampRate( + ISACStruct* ISAC_main_inst, + enum IsacSamplingRate sampRate) +{ + ISACMainStruct* instISAC; + + instISAC = (ISACMainStruct*)ISAC_main_inst; + + if((sampRate != kIsacWideband) && + (sampRate != kIsacSuperWideband)) + { + // Sampling Frequency is not supported + instISAC->errorCode = ISAC_UNSUPPORTED_SAMPLING_FREQUENCY; + return -1; + } + else if((instISAC->initFlag & BIT_MASK_ENC_INIT) != + BIT_MASK_ENC_INIT) + { + if(sampRate == kIsacWideband) + { + instISAC->bandwidthKHz = isac8kHz; + } + else + { + instISAC->bandwidthKHz = isac16kHz; + } + instISAC->encoderSamplingRateKHz = sampRate; + return 0; + } + else + { + ISACUBStruct* instUB = &(instISAC->instUB); + ISACLBStruct* instLB = &(instISAC->instLB); + double bottleneckLB; + double bottleneckUB; + WebRtc_Word32 bottleneck = instISAC->bottleneck; + WebRtc_Word16 codingMode = instISAC->codingMode; + WebRtc_Word16 frameSizeMs = instLB->ISACencLB_obj.new_framelength / (FS / 1000); + + if((sampRate == kIsacWideband) && + (instISAC->encoderSamplingRateKHz == kIsacSuperWideband)) + { + // changing from super-wideband to wideband. + // we don't need to re-initialize the encoder of the + // lower-band. + instISAC->bandwidthKHz = isac8kHz; + if(codingMode == 1) + { + ControlLb(instLB, + (bottleneck > 32000)? 32000:bottleneck, FRAMESIZE); + } + instISAC->maxPayloadSizeBytes = STREAM_SIZE_MAX_60; + instISAC->maxRateBytesPer30Ms = STREAM_SIZE_MAX_30; + } + else if((sampRate == kIsacSuperWideband) && + (instISAC->encoderSamplingRateKHz == kIsacWideband)) + { + if(codingMode == 1) + { + WebRtcIsac_RateAllocation(bottleneck, &bottleneckLB, &bottleneckUB, + &(instISAC->bandwidthKHz)); + } + + instISAC->bandwidthKHz = isac16kHz; + instISAC->maxPayloadSizeBytes = STREAM_SIZE_MAX; + instISAC->maxRateBytesPer30Ms = STREAM_SIZE_MAX; + + EncoderInitLb(instLB, codingMode, sampRate); + EncoderInitUb(instUB, instISAC->bandwidthKHz); + + memset(instISAC->analysisFBState1, 0, + FB_STATE_SIZE_WORD32 * sizeof(WebRtc_Word32)); + memset(instISAC->analysisFBState2, 0, + FB_STATE_SIZE_WORD32 * sizeof(WebRtc_Word32)); + + if(codingMode == 1) + { + instISAC->bottleneck = bottleneck; + ControlLb(instLB, bottleneckLB, + (instISAC->bandwidthKHz == isac8kHz)? frameSizeMs:FRAMESIZE); + if(instISAC->bandwidthKHz > isac8kHz) + { + ControlUb(instUB, bottleneckUB); + } + } + else + { + instLB->ISACencLB_obj.enforceFrameSize = 0; + instLB->ISACencLB_obj.new_framelength = FRAMESAMPLES; + } + } + instISAC->encoderSamplingRateKHz = sampRate; + return 0; + } +} + + +/****************************************************************************** + * WebRtcIsac_SetDecSampRate() + * Set the sampling rate of the decoder. Initialization of the decoder WILL + * NOT overwrite the sampling rate of the encoder. The default value is 16 kHz + * which is set when the instance is created. + * + * Input: + * - ISAC_main_inst : iSAC instance + * - sampRate : enumerator specifying the sampling rate. + * + * Return value : 0 if successful + * -1 if failed. + */ +WebRtc_Word16 WebRtcIsac_SetDecSampRate( + ISACStruct* ISAC_main_inst, + enum IsacSamplingRate sampRate) +{ + ISACMainStruct* instISAC; + + instISAC = (ISACMainStruct*)ISAC_main_inst; + + if((sampRate != kIsacWideband) && + (sampRate != kIsacSuperWideband)) + { + // Sampling Frequency is not supported + instISAC->errorCode = ISAC_UNSUPPORTED_SAMPLING_FREQUENCY; + return -1; + } + else + { + if((instISAC->decoderSamplingRateKHz == kIsacWideband) && + (sampRate == kIsacSuperWideband)) + { + // switching from wideband to super-wideband at the decoder + // we need to reset the filter-bank and initialize + // upper-band decoder. + memset(instISAC->synthesisFBState1, 0, + FB_STATE_SIZE_WORD32 * sizeof(WebRtc_Word32)); + memset(instISAC->synthesisFBState2, 0, + FB_STATE_SIZE_WORD32 * sizeof(WebRtc_Word32)); + + if(DecoderInitUb(&(instISAC->instUB)) < 0) + { + return -1; + } + } + instISAC->decoderSamplingRateKHz = sampRate; + return 0; + } +} + + +/****************************************************************************** + * WebRtcIsac_EncSampRate() + * + * Input: + * - ISAC_main_inst : iSAC instance + * + * Return value : enumerator representing sampling frequency + * associated with the encoder, the input audio + * is expected to be sampled at this rate. + * + */ +enum IsacSamplingRate WebRtcIsac_EncSampRate( + ISACStruct* ISAC_main_inst) +{ + ISACMainStruct* instISAC; + + instISAC = (ISACMainStruct*)ISAC_main_inst; + + return instISAC->encoderSamplingRateKHz; +} + + +/****************************************************************************** + * WebRtcIsac_DecSampRate() + * Return the sampling rate of the decoded audio. + * + * Input: + * - ISAC_main_inst : iSAC instance + * + * Return value : enumerator representing sampling frequency + * associated with the decoder, i.e. the + * sampling rate of the decoded audio. + * + */ +enum IsacSamplingRate WebRtcIsac_DecSampRate( + ISACStruct* ISAC_main_inst) +{ + ISACMainStruct* instISAC; + + instISAC = (ISACMainStruct*)ISAC_main_inst; + + return instISAC->decoderSamplingRateKHz; +} diff --git a/src/mod/codecs/mod_iSAC/isac.gypi b/src/mod/codecs/mod_iSAC/isac.gypi new file mode 100644 index 0000000000..d30be551bd --- /dev/null +++ b/src/mod/codecs/mod_iSAC/isac.gypi @@ -0,0 +1,91 @@ +# Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. +# +# Use of this source code is governed by a BSD-style license +# that can be found in the LICENSE file in the root of the source +# tree. An additional intellectual property rights grant can be found +# in the file PATENTS. All contributing project authors may +# be found in the AUTHORS file in the root of the source tree. + +{ + 'targets': [ + { + 'target_name': 'iSAC', + 'type': '<(library)', + 'dependencies': [ + '<(webrtc_root)/common_audio/common_audio.gyp:signal_processing', + ], + 'include_dirs': [ + '../interface', + ], + 'direct_dependent_settings': { + 'include_dirs': [ + '../interface', + ], + }, + 'sources': [ + '../interface/isac.h', + 'arith_routines.c', + 'arith_routines_hist.c', + 'arith_routines_logist.c', + 'bandwidth_estimator.c', + 'crc.c', + 'decode.c', + 'decode_bwe.c', + 'encode.c', + 'encode_lpc_swb.c', + 'entropy_coding.c', + 'fft.c', + 'filter_functions.c', + 'filterbank_tables.c', + 'intialize.c', + 'isac.c', + 'filterbanks.c', + 'pitch_lag_tables.c', + 'lattice.c', + 'lpc_gain_swb_tables.c', + 'lpc_analysis.c', + 'lpc_shape_swb12_tables.c', + 'lpc_shape_swb16_tables.c', + 'lpc_tables.c', + 'pitch_estimator.c', + 'pitch_filter.c', + 'pitch_gain_tables.c', + 'spectrum_ar_model_tables.c', + 'transform.c', + 'arith_routines.h', + 'bandwidth_estimator.h', + 'codec.h', + 'crc.h', + 'encode_lpc_swb.h', + 'entropy_coding.h', + 'fft.h', + 'filterbank_tables.h', + 'lpc_gain_swb_tables.h', + 'lpc_analysis.h', + 'lpc_shape_swb12_tables.h', + 'lpc_shape_swb16_tables.h', + 'lpc_tables.h', + 'pitch_estimator.h', + 'pitch_gain_tables.h', + 'pitch_lag_tables.h', + 'settings.h', + 'spectrum_ar_model_tables.h', + 'structs.h', + 'os_specific_inline.h', + ], + 'conditions': [ + ['OS!="win"', { + 'defines': [ + 'WEBRTC_LINUX', + ], + }], + ], + }, + ], +} + +# Local Variables: +# tab-width:2 +# indent-tabs-mode:nil +# End: +# vim: set expandtab tabstop=2 shiftwidth=2: diff --git a/src/mod/codecs/mod_iSAC/isac.h b/src/mod/codecs/mod_iSAC/isac.h new file mode 100644 index 0000000000..03c260bb8a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/isac.h @@ -0,0 +1,729 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_INTERFACE_ISAC_H_ +#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_INTERFACE_ISAC_H_ + +/* + * Define the fixed-point numeric formats + */ +#include "typedefs.h" + +typedef struct WebRtcISACStruct ISACStruct; + +enum IsacSamplingRate {kIsacWideband = 16, kIsacSuperWideband = 32}; + + +#if defined(__cplusplus) +extern "C" { +#endif + + /****************************************************************************** + * WebRtcIsac_AssignSize(...) + * + * This function returns the size of the ISAC instance, so that the instance + * can be created outside iSAC. + * + * Input: + * - samplingRate : sampling rate of the input/output audio. + * + * Output: + * - sizeinbytes : number of bytes needed to allocate for the + * instance. + * + * Return value : 0 - Ok + * -1 - Error + */ + + WebRtc_Word16 WebRtcIsac_AssignSize( + int* sizeinbytes); + + + /****************************************************************************** + * WebRtcIsac_Assign(...) + * + * This function assignes the memory already created to the ISAC instance. + * + * Input: + * - *ISAC_main_inst : a pointer to the coder instance. + * - samplingRate : sampling rate of the input/output audio. + * - ISAC_inst_Addr : the already allocated memory, where we put the + * iSAC structure. + * + * Return value : 0 - Ok + * -1 - Error + */ + + WebRtc_Word16 WebRtcIsac_Assign( + ISACStruct** ISAC_main_inst, + void* ISAC_inst_Addr); + + + /****************************************************************************** + * WebRtcIsac_Create(...) + * + * This function creates an ISAC instance, which will contain the state + * information for one coding/decoding channel. + * + * Input: + * - *ISAC_main_inst : a pointer to the coder instance. + * + * Return value : 0 - Ok + * -1 - Error + */ + + WebRtc_Word16 WebRtcIsac_Create( + ISACStruct** ISAC_main_inst); + + + /****************************************************************************** + * WebRtcIsac_Free(...) + * + * This function frees the ISAC instance created at the beginning. + * + * Input: + * - ISAC_main_inst : an ISAC instance. + * + * Return value : 0 - Ok + * -1 - Error + */ + + WebRtc_Word16 WebRtcIsac_Free( + ISACStruct* ISAC_main_inst); + + + /****************************************************************************** + * WebRtcIsac_EncoderInit(...) + * + * This function initializes an ISAC instance prior to the encoder calls. + * + * Input: + * - ISAC_main_inst : ISAC instance. + * - CodingMode : 0 -> Bit rate and frame length are + * automatically adjusted to available bandwidth + * on transmission channel, just valid if codec + * is created to work in wideband mode. + * 1 -> User sets a frame length and a target bit + * rate which is taken as the maximum + * short-term average bit rate. + * + * Return value : 0 - Ok + * -1 - Error + */ + + WebRtc_Word16 WebRtcIsac_EncoderInit( + ISACStruct* ISAC_main_inst, + WebRtc_Word16 CodingMode); + + + /****************************************************************************** + * WebRtcIsac_Encode(...) + * + * This function encodes 10ms audio blocks and inserts it into a package. + * Input speech length has 160 samples if operating at 16 kHz sampling + * rate, or 320 if operating at 32 kHz sampling rate. The encoder buffers the + * input audio until the whole frame is buffered then proceeds with encoding. + * + * + * Input: + * - ISAC_main_inst : ISAC instance. + * - speechIn : input speech vector. + * + * Output: + * - encoded : the encoded data vector + * + * Return value: + * : >0 - Length (in bytes) of coded data + * : 0 - The buffer didn't reach the chosen + * frame-size so it keeps buffering speech + * samples. + * : -1 - Error + */ + + WebRtc_Word16 WebRtcIsac_Encode( + ISACStruct* ISAC_main_inst, + const WebRtc_Word16* speechIn, + WebRtc_Word16* encoded); + + + /****************************************************************************** + * WebRtcIsac_DecoderInit(...) + * + * This function initializes an ISAC instance prior to the decoder calls. + * + * Input: + * - ISAC_main_inst : ISAC instance. + * + * Return value + * : 0 - Ok + * -1 - Error + */ + + WebRtc_Word16 WebRtcIsac_DecoderInit( + ISACStruct* ISAC_main_inst); + + + /****************************************************************************** + * WebRtcIsac_UpdateBwEstimate(...) + * + * This function updates the estimate of the bandwidth. + * + * Input: + * - ISAC_main_inst : ISAC instance. + * - encoded : encoded ISAC frame(s). + * - packet_size : size of the packet. + * - rtp_seq_number : the RTP number of the packet. + * - send_ts : the RTP send timestamp, given in samples + * - arr_ts : the arrival time of the packet (from NetEq) + * in samples. + * + * Return value : 0 - Ok + * -1 - Error + */ + + WebRtc_Word16 WebRtcIsac_UpdateBwEstimate( + ISACStruct* ISAC_main_inst, + const WebRtc_UWord16* encoded, + WebRtc_Word32 packet_size, + WebRtc_UWord16 rtp_seq_number, + WebRtc_UWord32 send_ts, + WebRtc_UWord32 arr_ts); + + + /****************************************************************************** + * WebRtcIsac_Decode(...) + * + * This function decodes an ISAC frame. At 16 kHz sampling rate, the length + * of the output audio could be either 480 or 960 samples, equivalent to + * 30 or 60 ms respectively. At 32 kHz sampling rate, the length of the + * output audio is 960 samples, which is 30 ms. + * + * Input: + * - ISAC_main_inst : ISAC instance. + * - encoded : encoded ISAC frame(s). + * - len : bytes in encoded vector. + * + * Output: + * - decoded : The decoded vector. + * + * Return value : >0 - number of samples in decoded vector. + * -1 - Error. + */ + + WebRtc_Word16 WebRtcIsac_Decode( + ISACStruct* ISAC_main_inst, + const WebRtc_UWord16* encoded, + WebRtc_Word16 len, + WebRtc_Word16* decoded, + WebRtc_Word16* speechType); + + + /****************************************************************************** + * WebRtcIsac_DecodePlc(...) + * + * This function conducts PLC for ISAC frame(s). Output speech length + * will be a multiple of frames, i.e. multiples of 30 ms audio. Therefore, + * the output is multiple of 480 samples if operating at 16 kHz and multiple + * of 960 if operating at 32 kHz. + * + * Input: + * - ISAC_main_inst : ISAC instance. + * - noOfLostFrames : Number of PLC frames to produce. + * + * Output: + * - decoded : The decoded vector. + * + * Return value : >0 - number of samples in decoded PLC vector + * -1 - Error + */ + + WebRtc_Word16 WebRtcIsac_DecodePlc( + ISACStruct* ISAC_main_inst, + WebRtc_Word16* decoded, + WebRtc_Word16 noOfLostFrames); + + + /****************************************************************************** + * WebRtcIsac_Control(...) + * + * This function sets the limit on the short-term average bit-rate and the + * frame length. Should be used only in Instantaneous mode. At 16 kHz sampling + * rate, an average bit-rate between 10000 to 32000 bps is valid and a + * frame-size of 30 or 60 ms is acceptable. At 32 kHz, an average bit-rate + * between 10000 to 56000 is acceptable, and the valid frame-size is 30 ms. + * + * Input: + * - ISAC_main_inst : ISAC instance. + * - rate : limit on the short-term average bit rate, + * in bits/second. + * - framesize : frame-size in millisecond. + * + * Return value : 0 - ok + * -1 - Error + */ + + WebRtc_Word16 WebRtcIsac_Control( + ISACStruct* ISAC_main_inst, + WebRtc_Word32 rate, + WebRtc_Word16 framesize); + + + /****************************************************************************** + * WebRtcIsac_ControlBwe(...) + * + * This function sets the initial values of bottleneck and frame-size if + * iSAC is used in channel-adaptive mode. Therefore, this API is not + * applicable if the codec is created to operate in super-wideband mode. + * + * Through this API, users can enforce a frame-size for all values of + * bottleneck. Then iSAC will not automatically change the frame-size. + * + * + * Input: + * - ISAC_main_inst : ISAC instance. + * - rateBPS : initial value of bottleneck in bits/second + * 10000 <= rateBPS <= 56000 is accepted + * For default bottleneck set rateBPS = 0 + * - frameSizeMs : number of milliseconds per frame (30 or 60) + * - enforceFrameSize : 1 to enforce the given frame-size through + * out the adaptation process, 0 to let iSAC + * change the frame-size if required. + * + * Return value : 0 - ok + * -1 - Error + */ + + WebRtc_Word16 WebRtcIsac_ControlBwe( + ISACStruct* ISAC_main_inst, + WebRtc_Word32 rateBPS, + WebRtc_Word16 frameSizeMs, + WebRtc_Word16 enforceFrameSize); + + + /****************************************************************************** + * WebRtcIsac_ReadFrameLen(...) + * + * This function returns the length of the frame represented in the packet. + * + * Input: + * - encoded : Encoded bit-stream + * + * Output: + * - frameLength : Length of frame in packet (in samples) + * + */ + + WebRtc_Word16 WebRtcIsac_ReadFrameLen( + ISACStruct* ISAC_main_inst, + const WebRtc_Word16* encoded, + WebRtc_Word16* frameLength); + + + /****************************************************************************** + * WebRtcIsac_version(...) + * + * This function returns the version number. + * + * Output: + * - version : Pointer to character string + * + */ + + void WebRtcIsac_version( + char *version); + + + /****************************************************************************** + * WebRtcIsac_GetErrorCode(...) + * + * This function can be used to check the error code of an iSAC instance. When + * a function returns -1 a error code will be set for that instance. The + * function below extract the code of the last error that occurred in the + * specified instance. + * + * Input: + * - ISAC_main_inst : ISAC instance + * + * Return value : Error code + */ + + WebRtc_Word16 WebRtcIsac_GetErrorCode( + ISACStruct* ISAC_main_inst); + + + /**************************************************************************** + * WebRtcIsac_GetUplinkBw(...) + * + * This function outputs the target bottleneck of the codec. In + * channel-adaptive mode, the target bottleneck is specified through in-band + * signalling retreived by bandwidth estimator. + * In channel-independent, also called instantaneous mode, the target + * bottleneck is provided to the encoder by calling xxx_control(...). If + * xxx_control is never called the default values is returned. The default + * value for bottleneck at 16 kHz encoder sampling rate is 32000 bits/sec, + * and it is 56000 bits/sec for 32 kHz sampling rate. + * Note that the output is the iSAC internal operating bottleneck which might + * differ slightly from the one provided through xxx_control(). + * + * Input: + * - ISAC_main_inst : iSAC instance + * + * Output: + * - *bottleneck : bottleneck in bits/sec + * + * Return value : -1 if error happens + * 0 bit-rates computed correctly. + */ + + WebRtc_Word16 WebRtcIsac_GetUplinkBw( + ISACStruct* ISAC_main_inst, + WebRtc_Word32* bottleneck); + + + /****************************************************************************** + * WebRtcIsac_SetMaxPayloadSize(...) + * + * This function sets a limit for the maximum payload size of iSAC. The same + * value is used both for 30 and 60 ms packets. If the encoder sampling rate + * is 16 kHz the maximum payload size is between 120 and 400 bytes. If the + * encoder sampling rate is 32 kHz the maximum payload size is between 120 + * and 600 bytes. + * + * If an out of range limit is used, the function returns -1, but the closest + * valid value will be applied. + * + * --------------- + * IMPORTANT NOTES + * --------------- + * The size of a packet is limited to the minimum of 'max-payload-size' and + * 'max-rate.' For instance, let's assume the max-payload-size is set to + * 170 bytes, and max-rate is set to 40 kbps. Note that a limit of 40 kbps + * translates to 150 bytes for 30ms frame-size & 300 bytes for 60ms + * frame-size. Then a packet with a frame-size of 30 ms is limited to 150, + * i.e. min(170, 150), and a packet with 60 ms frame-size is limited to + * 170 bytes, i.e. min(170, 300). + * + * Input: + * - ISAC_main_inst : iSAC instance + * - maxPayloadBytes : maximum size of the payload in bytes + * valid values are between 120 and 400 bytes + * if encoder sampling rate is 16 kHz. For + * 32 kHz encoder sampling rate valid values + * are between 120 and 600 bytes. + * + * Return value : 0 if successful + * -1 if error happens + */ + + WebRtc_Word16 WebRtcIsac_SetMaxPayloadSize( + ISACStruct* ISAC_main_inst, + WebRtc_Word16 maxPayloadBytes); + + + /****************************************************************************** + * WebRtcIsac_SetMaxRate(...) + * + * This function sets the maximum rate which the codec may not exceed for + * any signal packet. The maximum rate is defined and payload-size per + * frame-size in bits per second. + * + * The codec has a maximum rate of 53400 bits per second (200 bytes per 30 + * ms) if the encoder sampling rate is 16kHz, and 160 kbps (600 bytes/30 ms) + * if the encoder sampling rate is 32 kHz. + * + * It is possible to set a maximum rate between 32000 and 53400 bits/sec + * in wideband mode, and 32000 to 160000 bits/sec in super-wideband mode. + * + * If an out of range limit is used, the function returns -1, but the closest + * valid value will be applied. + * + * --------------- + * IMPORTANT NOTES + * --------------- + * The size of a packet is limited to the minimum of 'max-payload-size' and + * 'max-rate.' For instance, let's assume the max-payload-size is set to + * 170 bytes, and max-rate is set to 40 kbps. Note that a limit of 40 kbps + * translates to 150 bytes for 30ms frame-size & 300 bytes for 60ms + * frame-size. Then a packet with a frame-size of 30 ms is limited to 150, + * i.e. min(170, 150), and a packet with 60 ms frame-size is limited to + * 170 bytes, min(170, 300). + * + * Input: + * - ISAC_main_inst : iSAC instance + * - maxRate : maximum rate in bits per second, + * valid values are 32000 to 53400 bits/sec in + * wideband mode, and 32000 to 160000 bits/sec in + * super-wideband mode. + * + * Return value : 0 if successful + * -1 if error happens + */ + + WebRtc_Word16 WebRtcIsac_SetMaxRate( + ISACStruct* ISAC_main_inst, + WebRtc_Word32 maxRate); + + + /****************************************************************************** + * WebRtcIsac_DecSampRate() + * Return the sampling rate of the decoded audio. + * + * Input: + * - ISAC_main_inst : iSAC instance + * + * Return value : enumerator representing sampling frequency + * associated with the decoder, i.e. the + * sampling rate of the decoded audio. + * + */ + + enum IsacSamplingRate WebRtcIsac_DecSampRate( + ISACStruct* ISAC_main_inst); + + + /****************************************************************************** + * WebRtcIsac_EncSampRate() + * + * Input: + * - ISAC_main_inst : iSAC instance + * + * Return value : enumerator representing sampling frequency + * associated with the encoder, the input audio + * is expected to be sampled at this rate. + * + */ + + enum IsacSamplingRate WebRtcIsac_EncSampRate( + ISACStruct* ISAC_main_inst); + + + /****************************************************************************** + * WebRtcIsac_SetDecSampRate() + * Set the sampling rate of the decoder. Initialization of the decoder WILL + * NOT overwrite the sampling rate of the encoder. The default value is 16 kHz + * which is set when the instance is created. + * + * Input: + * - ISAC_main_inst : iSAC instance + * - sampRate : enumerator specifying the sampling rate. + * + * Return value : 0 if successful + * -1 if failed. + */ + + WebRtc_Word16 WebRtcIsac_SetDecSampRate( + ISACStruct* ISAC_main_inst, + enum IsacSamplingRate sampRate); + + + /****************************************************************************** + * WebRtcIsac_SetEncSampRate() + * Set the sampling rate of the encoder. Initialization of the encoder WILL + * NOT overwrite the sampling rate of the encoder. The default value is 16 kHz + * which is set when the instance is created. The encoding-mode and the + * bottleneck remain unchanged by this call, however, the maximum rate and + * maximum payload-size will reset to their default value. + * + * Input: + * - ISAC_main_inst : iSAC instance + * - sampRate : enumerator specifying the sampling rate. + * + * Return value : 0 if successful + * -1 if failed. + */ + + WebRtc_Word16 WebRtcIsac_SetEncSampRate( + ISACStruct* ISAC_main_inst, + enum IsacSamplingRate sampRate); + + + + /****************************************************************************** + * WebRtcIsac_GetNewBitStream(...) + * + * This function returns encoded data, with the recieved bwe-index in the + * stream. If the rate is set to a value less than bottleneck of codec + * the new bistream will be re-encoded with the given target rate. + * It should always return a complete packet, i.e. only called once + * even for 60 msec frames. + * + * NOTE 1! This function does not write in the ISACStruct, it is not allowed. + * NOTE 2! Currently not implemented for SWB mode. + * NOTE 3! Rates larger than the bottleneck of the codec will be limited + * to the current bottleneck. + * + * Input: + * - ISAC_main_inst : ISAC instance. + * - bweIndex : Index of bandwidth estimate to put in new + * bitstream + * - rate : target rate of the transcoder is bits/sec. + * Valid values are the accepted rate in iSAC, + * i.e. 10000 to 56000. + * - isRCU : if the new bit-stream is an RCU stream. + * Note that the rate parameter always indicates + * the target rate of the main paylaod, regardless + * of 'isRCU' value. + * + * Output: + * - encoded : The encoded data vector + * + * Return value : >0 - Length (in bytes) of coded data + * -1 - Error or called in SWB mode + * NOTE! No error code is written to + * the struct since it is only allowed to read + * the struct. + */ + WebRtc_Word16 WebRtcIsac_GetNewBitStream( + ISACStruct* ISAC_main_inst, + WebRtc_Word16 bweIndex, + WebRtc_Word16 jitterInfo, + WebRtc_Word32 rate, + WebRtc_Word16* encoded, + WebRtc_Word16 isRCU); + + + + /**************************************************************************** + * WebRtcIsac_GetDownLinkBwIndex(...) + * + * This function returns index representing the Bandwidth estimate from + * other side to this side. + * + * Input: + * - ISAC_main_inst : iSAC struct + * + * Output: + * - bweIndex : Bandwidth estimate to transmit to other side. + * + */ + + WebRtc_Word16 WebRtcIsac_GetDownLinkBwIndex( + ISACStruct* ISAC_main_inst, + WebRtc_Word16* bweIndex, + WebRtc_Word16* jitterInfo); + + + /**************************************************************************** + * WebRtcIsac_UpdateUplinkBw(...) + * + * This function takes an index representing the Bandwidth estimate from + * this side to other side and updates BWE. + * + * Input: + * - ISAC_main_inst : iSAC struct + * - bweIndex : Bandwidth estimate from other side. + * + */ + + WebRtc_Word16 WebRtcIsac_UpdateUplinkBw( + ISACStruct* ISAC_main_inst, + WebRtc_Word16 bweIndex); + + + /**************************************************************************** + * WebRtcIsac_ReadBwIndex(...) + * + * This function returns the index of the Bandwidth estimate from the bitstream. + * + * Input: + * - encoded : Encoded bitstream + * + * Output: + * - frameLength : Length of frame in packet (in samples) + * - bweIndex : Bandwidth estimate in bitstream + * + */ + + WebRtc_Word16 WebRtcIsac_ReadBwIndex( + const WebRtc_Word16* encoded, + WebRtc_Word16* bweIndex); + + + + /******************************************************************************* + * WebRtcIsac_GetNewFrameLen(...) + * + * returns the frame lenght (in samples) of the next packet. In the case of channel-adaptive + * mode, iSAC decides on its frame lenght based on the estimated bottleneck + * this allows a user to prepare for the next packet (at the encoder) + * + * The primary usage is in CE to make the iSAC works in channel-adaptive mode + * + * Input: + * - ISAC_main_inst : iSAC struct + * + * Return Value : frame lenght in samples + * + */ + + WebRtc_Word16 WebRtcIsac_GetNewFrameLen( + ISACStruct* ISAC_main_inst); + + + /**************************************************************************** + * WebRtcIsac_GetRedPayload(...) + * + * Populates "encoded" with the redundant payload of the recently encoded + * frame. This function has to be called once that WebRtcIsac_Encode(...) + * returns a positive value. Regardless of the frame-size this function will + * be called only once after encoding is completed. + * + * Input: + * - ISAC_main_inst : iSAC struct + * + * Output: + * - encoded : the encoded data vector + * + * + * Return value: + * : >0 - Length (in bytes) of coded data + * : -1 - Error + * + * + */ + WebRtc_Word16 WebRtcIsac_GetRedPayload( + ISACStruct* ISAC_main_inst, + WebRtc_Word16* encoded); + + + /**************************************************************************** + * WebRtcIsac_DecodeRcu(...) + * + * This function decodes a redundant (RCU) iSAC frame. Function is called in + * NetEq with a stored RCU payload i case of packet loss. Output speech length + * will be a multiple of 480 samples: 480 or 960 samples, + * depending on the framesize (30 or 60 ms). + * + * Input: + * - ISAC_main_inst : ISAC instance. + * - encoded : encoded ISAC RCU frame(s) + * - len : bytes in encoded vector + * + * Output: + * - decoded : The decoded vector + * + * Return value : >0 - number of samples in decoded vector + * -1 - Error + */ + WebRtc_Word16 WebRtcIsac_DecodeRcu( + ISACStruct* ISAC_main_inst, + const WebRtc_UWord16* encoded, + WebRtc_Word16 len, + WebRtc_Word16* decoded, + WebRtc_Word16* speechType); + + +#if defined(__cplusplus) +} +#endif + + + +#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_INTERFACE_ISAC_H_ */ diff --git a/src/mod/codecs/mod_iSAC/lattice.c b/src/mod/codecs/mod_iSAC/lattice.c new file mode 100644 index 0000000000..a46135a3f7 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/lattice.c @@ -0,0 +1,217 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * lattice.c + * + * contains the normalized lattice filter routines (MA and AR) for iSAC codec + * + */ +#include "settings.h" +#include "codec.h" + +#include +#include +#ifdef WEBRTC_ANDROID +#include +#endif + +/* filter the signal using normalized lattice filter */ +/* MA filter */ +void WebRtcIsac_NormLatticeFilterMa(int orderCoef, + float *stateF, + float *stateG, + float *lat_in, + double *filtcoeflo, + double *lat_out) +{ + int n,k,i,u,temp1; + int ord_1 = orderCoef+1; + float sth[MAX_AR_MODEL_ORDER]; + float cth[MAX_AR_MODEL_ORDER]; + float inv_cth[MAX_AR_MODEL_ORDER]; + double a[MAX_AR_MODEL_ORDER+1]; + float f[MAX_AR_MODEL_ORDER+1][HALF_SUBFRAMELEN], g[MAX_AR_MODEL_ORDER+1][HALF_SUBFRAMELEN]; + float gain1; + + for (u=0;u=0;i--) //get the state of f&g for the first input, for all orders + { + ARf[i][0] = cth[i]*ARf[i+1][0] - sth[i]*stateG[i]; + ARg[i+1][0] = sth[i]*ARf[i+1][0] + cth[i]* stateG[i]; + } + ARg[0][0] = ARf[0][0]; + + for(n=0;n<(HALF_SUBFRAMELEN-1);n++) + { + for(k=orderCoef-1;k>=0;k--) + { + ARf[k][n+1] = cth[k]*ARf[k+1][n+1] - sth[k]*ARg[k][n]; + ARg[k+1][n+1] = sth[k]*ARf[k+1][n+1] + cth[k]* ARg[k][n]; + } + ARg[0][n+1] = ARf[0][n+1]; + } + + memcpy(lat_out+u * HALF_SUBFRAMELEN, &(ARf[0][0]), sizeof(float) * HALF_SUBFRAMELEN); + + /* cannot use memcpy in the following */ + for (i=0;i0; m--) + { + tmp_inv = 1.0f / cth2; + for (k=1; k<=m; k++) + { + tmp[k] = ((float)a[k] - sth[m] * (float)a[m-k+1]) * tmp_inv; + } + + for (k=1; k= 0; i--) + { + temp1W32 = WEBRTC_SPL_LSHIFT_W32(R[i], norm); + // Put R in hi and low format + R_hi[i] = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32(temp1W32, 16); + R_low[i] = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32((temp1W32 + - WEBRTC_SPL_LSHIFT_W32((WebRtc_Word32)R_hi[i], 16)), 1); + } + + // K = A[1] = -R[1] / R[0] + + temp2W32 = WEBRTC_SPL_LSHIFT_W32((WebRtc_Word32)R_hi[1],16) + + WEBRTC_SPL_LSHIFT_W32((WebRtc_Word32)R_low[1],1); // R[1] in Q31 + temp3W32 = WEBRTC_SPL_ABS_W32(temp2W32); // abs R[1] + temp1W32 = WebRtcSpl_DivW32HiLow(temp3W32, R_hi[0], R_low[0]); // abs(R[1])/R[0] in Q31 + // Put back the sign on R[1] + if (temp2W32 > 0) + { + temp1W32 = -temp1W32; + } + + // Put K in hi and low format + K_hi = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32(temp1W32, 16); + K_low = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32((temp1W32 + - WEBRTC_SPL_LSHIFT_W32((WebRtc_Word32)K_hi, 16)), 1); + + // Store first reflection coefficient + K[0] = K_hi; + + temp1W32 = WEBRTC_SPL_RSHIFT_W32(temp1W32, 4); // A[1] in Q27 + + // Put A[1] in hi and low format + A_hi[1] = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32(temp1W32, 16); + A_low[1] = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32((temp1W32 + - WEBRTC_SPL_LSHIFT_W32((WebRtc_Word32)A_hi[1], 16)), 1); + + // Alpha = R[0] * (1-K^2) + + temp1W32 = (((WEBRTC_SPL_MUL_16_16(K_hi, K_low) >> 14) + WEBRTC_SPL_MUL_16_16(K_hi, K_hi)) + << 1); // temp1W32 = k^2 in Q31 + + temp1W32 = WEBRTC_SPL_ABS_W32(temp1W32); // Guard against <0 + temp1W32 = (WebRtc_Word32)0x7fffffffL - temp1W32; // temp1W32 = (1 - K[0]*K[0]) in Q31 + + // Store temp1W32 = 1 - K[0]*K[0] on hi and low format + tmp_hi = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32(temp1W32, 16); + tmp_low = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32((temp1W32 + - WEBRTC_SPL_LSHIFT_W32((WebRtc_Word32)tmp_hi, 16)), 1); + + // Calculate Alpha in Q31 + temp1W32 = ((WEBRTC_SPL_MUL_16_16(R_hi[0], tmp_hi) + + (WEBRTC_SPL_MUL_16_16(R_hi[0], tmp_low) >> 15) + + (WEBRTC_SPL_MUL_16_16(R_low[0], tmp_hi) >> 15)) << 1); + + // Normalize Alpha and put it in hi and low format + + Alpha_exp = WebRtcSpl_NormW32(temp1W32); + temp1W32 = WEBRTC_SPL_LSHIFT_W32(temp1W32, Alpha_exp); + Alpha_hi = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32(temp1W32, 16); + Alpha_low = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32((temp1W32 + - WEBRTC_SPL_LSHIFT_W32((WebRtc_Word32)Alpha_hi, 16)), 1); + + // Perform the iterative calculations in the Levinson-Durbin algorithm + + for (i = 2; i <= order; i++) + { + /* ---- + temp1W32 = R[i] + > R[j]*A[i-j] + / + ---- + j=1..i-1 + */ + + temp1W32 = 0; + + for (j = 1; j < i; j++) + { + // temp1W32 is in Q31 + temp1W32 += ((WEBRTC_SPL_MUL_16_16(R_hi[j], A_hi[i-j]) << 1) + + (((WEBRTC_SPL_MUL_16_16(R_hi[j], A_low[i-j]) >> 15) + + (WEBRTC_SPL_MUL_16_16(R_low[j], A_hi[i-j]) >> 15)) << 1)); + } + + temp1W32 = WEBRTC_SPL_LSHIFT_W32(temp1W32, 4); + temp1W32 += (WEBRTC_SPL_LSHIFT_W32((WebRtc_Word32)R_hi[i], 16) + + WEBRTC_SPL_LSHIFT_W32((WebRtc_Word32)R_low[i], 1)); + + // K = -temp1W32 / Alpha + temp2W32 = WEBRTC_SPL_ABS_W32(temp1W32); // abs(temp1W32) + temp3W32 = WebRtcSpl_DivW32HiLow(temp2W32, Alpha_hi, Alpha_low); // abs(temp1W32)/Alpha + + // Put the sign of temp1W32 back again + if (temp1W32 > 0) + { + temp3W32 = -temp3W32; + } + + // Use the Alpha shifts from earlier to de-normalize + norm = WebRtcSpl_NormW32(temp3W32); + if ((Alpha_exp <= norm) || (temp3W32 == 0)) + { + temp3W32 = WEBRTC_SPL_LSHIFT_W32(temp3W32, Alpha_exp); + } else + { + if (temp3W32 > 0) + { + temp3W32 = (WebRtc_Word32)0x7fffffffL; + } else + { + temp3W32 = (WebRtc_Word32)0x80000000L; + } + } + + // Put K on hi and low format + K_hi = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32(temp3W32, 16); + K_low = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32((temp3W32 + - WEBRTC_SPL_LSHIFT_W32((WebRtc_Word32)K_hi, 16)), 1); + + // Store Reflection coefficient in Q15 + K[i - 1] = K_hi; + + // Test for unstable filter. + // If unstable return 0 and let the user decide what to do in that case + + if ((WebRtc_Word32)WEBRTC_SPL_ABS_W16(K_hi) > (WebRtc_Word32)32750) + { + return 0; // Unstable filter + } + + /* + Compute updated LPC coefficient: Anew[i] + Anew[j]= A[j] + K*A[i-j] for j=1..i-1 + Anew[i]= K + */ + + for (j = 1; j < i; j++) + { + // temp1W32 = A[j] in Q27 + temp1W32 = WEBRTC_SPL_LSHIFT_W32((WebRtc_Word32)A_hi[j],16) + + WEBRTC_SPL_LSHIFT_W32((WebRtc_Word32)A_low[j],1); + + // temp1W32 += K*A[i-j] in Q27 + temp1W32 += ((WEBRTC_SPL_MUL_16_16(K_hi, A_hi[i-j]) + + (WEBRTC_SPL_MUL_16_16(K_hi, A_low[i-j]) >> 15) + + (WEBRTC_SPL_MUL_16_16(K_low, A_hi[i-j]) >> 15)) << 1); + + // Put Anew in hi and low format + A_upd_hi[j] = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32(temp1W32, 16); + A_upd_low[j] = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32((temp1W32 + - WEBRTC_SPL_LSHIFT_W32((WebRtc_Word32)A_upd_hi[j], 16)), 1); + } + + // temp3W32 = K in Q27 (Convert from Q31 to Q27) + temp3W32 = WEBRTC_SPL_RSHIFT_W32(temp3W32, 4); + + // Store Anew in hi and low format + A_upd_hi[i] = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32(temp3W32, 16); + A_upd_low[i] = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32((temp3W32 + - WEBRTC_SPL_LSHIFT_W32((WebRtc_Word32)A_upd_hi[i], 16)), 1); + + // Alpha = Alpha * (1-K^2) + + temp1W32 = (((WEBRTC_SPL_MUL_16_16(K_hi, K_low) >> 14) + + WEBRTC_SPL_MUL_16_16(K_hi, K_hi)) << 1); // K*K in Q31 + + temp1W32 = WEBRTC_SPL_ABS_W32(temp1W32); // Guard against <0 + temp1W32 = (WebRtc_Word32)0x7fffffffL - temp1W32; // 1 - K*K in Q31 + + // Convert 1- K^2 in hi and low format + tmp_hi = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32(temp1W32, 16); + tmp_low = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32((temp1W32 + - WEBRTC_SPL_LSHIFT_W32((WebRtc_Word32)tmp_hi, 16)), 1); + + // Calculate Alpha = Alpha * (1-K^2) in Q31 + temp1W32 = ((WEBRTC_SPL_MUL_16_16(Alpha_hi, tmp_hi) + + (WEBRTC_SPL_MUL_16_16(Alpha_hi, tmp_low) >> 15) + + (WEBRTC_SPL_MUL_16_16(Alpha_low, tmp_hi) >> 15)) << 1); + + // Normalize Alpha and store it on hi and low format + + norm = WebRtcSpl_NormW32(temp1W32); + temp1W32 = WEBRTC_SPL_LSHIFT_W32(temp1W32, norm); + + Alpha_hi = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32(temp1W32, 16); + Alpha_low = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32((temp1W32 + - WEBRTC_SPL_LSHIFT_W32((WebRtc_Word32)Alpha_hi, 16)), 1); + + // Update the total normalization of Alpha + Alpha_exp = Alpha_exp + norm; + + // Update A[] + + for (j = 1; j <= i; j++) + { + A_hi[j] = A_upd_hi[j]; + A_low[j] = A_upd_low[j]; + } + } + + /* + Set A[0] to 1.0 and store the A[i] i=1...order in Q12 + (Convert from Q27 and use rounding) + */ + + A[0] = 4096; + + for (i = 1; i <= order; i++) + { + // temp1W32 in Q27 + temp1W32 = WEBRTC_SPL_LSHIFT_W32((WebRtc_Word32)A_hi[i], 16) + + WEBRTC_SPL_LSHIFT_W32((WebRtc_Word32)A_low[i], 1); + // Round and store upper word + A[i] = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32((temp1W32<<1)+(WebRtc_Word32)32768, 16); + } + return 1; // Stable filters +} diff --git a/src/mod/codecs/mod_iSAC/lpc_analysis.c b/src/mod/codecs/mod_iSAC/lpc_analysis.c new file mode 100644 index 0000000000..854b2d733c --- /dev/null +++ b/src/mod/codecs/mod_iSAC/lpc_analysis.c @@ -0,0 +1,535 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#include "lpc_analysis.h" +#include "settings.h" +#include "codec.h" +#include "entropy_coding.h" + +#include +#include + +#define LEVINSON_EPS 1.0e-10 + + +/* window */ +/* Matlab generation code: + * t = (1:256)/257; r = 1-(1-t).^.45; w = sin(r*pi).^3; w = w/sum(w); plot((1:256)/8, w); grid; + * for k=1:16, fprintf(1, '%.8f, ', w(k*16 + (-15:0))); fprintf(1, '\n'); end + */ +static const double kLpcCorrWindow[WINLEN] = { + 0.00000000, 0.00000001, 0.00000004, 0.00000010, 0.00000020, + 0.00000035, 0.00000055, 0.00000083, 0.00000118, 0.00000163, + 0.00000218, 0.00000283, 0.00000361, 0.00000453, 0.00000558, 0.00000679, + 0.00000817, 0.00000973, 0.00001147, 0.00001342, 0.00001558, + 0.00001796, 0.00002058, 0.00002344, 0.00002657, 0.00002997, + 0.00003365, 0.00003762, 0.00004190, 0.00004651, 0.00005144, 0.00005673, + 0.00006236, 0.00006837, 0.00007476, 0.00008155, 0.00008875, + 0.00009636, 0.00010441, 0.00011290, 0.00012186, 0.00013128, + 0.00014119, 0.00015160, 0.00016252, 0.00017396, 0.00018594, 0.00019846, + 0.00021155, 0.00022521, 0.00023946, 0.00025432, 0.00026978, + 0.00028587, 0.00030260, 0.00031998, 0.00033802, 0.00035674, + 0.00037615, 0.00039626, 0.00041708, 0.00043863, 0.00046092, 0.00048396, + 0.00050775, 0.00053233, 0.00055768, 0.00058384, 0.00061080, + 0.00063858, 0.00066720, 0.00069665, 0.00072696, 0.00075813, + 0.00079017, 0.00082310, 0.00085692, 0.00089164, 0.00092728, 0.00096384, + 0.00100133, 0.00103976, 0.00107914, 0.00111947, 0.00116077, + 0.00120304, 0.00124630, 0.00129053, 0.00133577, 0.00138200, + 0.00142924, 0.00147749, 0.00152676, 0.00157705, 0.00162836, 0.00168070, + 0.00173408, 0.00178850, 0.00184395, 0.00190045, 0.00195799, + 0.00201658, 0.00207621, 0.00213688, 0.00219860, 0.00226137, + 0.00232518, 0.00239003, 0.00245591, 0.00252284, 0.00259079, 0.00265977, + 0.00272977, 0.00280078, 0.00287280, 0.00294582, 0.00301984, + 0.00309484, 0.00317081, 0.00324774, 0.00332563, 0.00340446, + 0.00348421, 0.00356488, 0.00364644, 0.00372889, 0.00381220, 0.00389636, + 0.00398135, 0.00406715, 0.00415374, 0.00424109, 0.00432920, + 0.00441802, 0.00450754, 0.00459773, 0.00468857, 0.00478001, + 0.00487205, 0.00496464, 0.00505775, 0.00515136, 0.00524542, 0.00533990, + 0.00543476, 0.00552997, 0.00562548, 0.00572125, 0.00581725, + 0.00591342, 0.00600973, 0.00610612, 0.00620254, 0.00629895, + 0.00639530, 0.00649153, 0.00658758, 0.00668341, 0.00677894, 0.00687413, + 0.00696891, 0.00706322, 0.00715699, 0.00725016, 0.00734266, + 0.00743441, 0.00752535, 0.00761540, 0.00770449, 0.00779254, + 0.00787947, 0.00796519, 0.00804963, 0.00813270, 0.00821431, 0.00829437, + 0.00837280, 0.00844949, 0.00852436, 0.00859730, 0.00866822, + 0.00873701, 0.00880358, 0.00886781, 0.00892960, 0.00898884, + 0.00904542, 0.00909923, 0.00915014, 0.00919805, 0.00924283, 0.00928436, + 0.00932252, 0.00935718, 0.00938821, 0.00941550, 0.00943890, + 0.00945828, 0.00947351, 0.00948446, 0.00949098, 0.00949294, + 0.00949020, 0.00948262, 0.00947005, 0.00945235, 0.00942938, 0.00940099, + 0.00936704, 0.00932738, 0.00928186, 0.00923034, 0.00917268, + 0.00910872, 0.00903832, 0.00896134, 0.00887763, 0.00878706, + 0.00868949, 0.00858478, 0.00847280, 0.00835343, 0.00822653, 0.00809199, + 0.00794970, 0.00779956, 0.00764145, 0.00747530, 0.00730103, + 0.00711857, 0.00692787, 0.00672888, 0.00652158, 0.00630597, + 0.00608208, 0.00584994, 0.00560962, 0.00536124, 0.00510493, 0.00484089, + 0.00456935, 0.00429062, 0.00400505, 0.00371310, 0.00341532, + 0.00311238, 0.00280511, 0.00249452, 0.00218184, 0.00186864, + 0.00155690, 0.00124918, 0.00094895, 0.00066112, 0.00039320, 0.00015881 +}; + +double WebRtcIsac_LevDurb(double *a, double *k, double *r, int order) +{ + + double sum, alpha; + int m, m_h, i; + alpha = 0; //warning -DH + a[0] = 1.0; + if (r[0] < LEVINSON_EPS) { /* if r[0] <= 0, set LPC coeff. to zero */ + for (i = 0; i < order; i++) { + k[i] = 0; + a[i+1] = 0; + } + } else { + a[1] = k[0] = -r[1]/r[0]; + alpha = r[0] + r[1] * k[0]; + for (m = 1; m < order; m++){ + sum = r[m + 1]; + for (i = 0; i < m; i++){ + sum += a[i+1] * r[m - i]; + } + k[m] = -sum / alpha; + alpha += k[m] * sum; + m_h = (m + 1) >> 1; + for (i = 0; i < m_h; i++){ + sum = a[i+1] + k[m] * a[m - i]; + a[m - i] += k[m] * a[i+1]; + a[i+1] = sum; + } + a[m+1] = k[m]; + } + } + return alpha; +} + + +//was static before, but didn't work with MEX file +void WebRtcIsac_GetVars(const double *input, const WebRtc_Word16 *pitchGains_Q12, + double *oldEnergy, double *varscale) +{ + double nrg[4], chng, pg; + int k; + + double pitchGains[4]={0,0,0,0};; + + /* Calculate energies of first and second frame halfs */ + nrg[0] = 0.0001; + for (k = QLOOKAHEAD/2; k < (FRAMESAMPLES_QUARTER + QLOOKAHEAD) / 2; k++) { + nrg[0] += input[k]*input[k]; + } + nrg[1] = 0.0001; + for ( ; k < (FRAMESAMPLES_HALF + QLOOKAHEAD) / 2; k++) { + nrg[1] += input[k]*input[k]; + } + nrg[2] = 0.0001; + for ( ; k < (FRAMESAMPLES*3/4 + QLOOKAHEAD) / 2; k++) { + nrg[2] += input[k]*input[k]; + } + nrg[3] = 0.0001; + for ( ; k < (FRAMESAMPLES + QLOOKAHEAD) / 2; k++) { + nrg[3] += input[k]*input[k]; + } + + /* Calculate average level change */ + chng = 0.25 * (fabs(10.0 * log10(nrg[3] / nrg[2])) + + fabs(10.0 * log10(nrg[2] / nrg[1])) + + fabs(10.0 * log10(nrg[1] / nrg[0])) + + fabs(10.0 * log10(nrg[0] / *oldEnergy))); + + + /* Find average pitch gain */ + pg = 0.0; + for (k=0; k<4; k++) + { + pitchGains[k] = ((float)pitchGains_Q12[k])/4096; + pg += pitchGains[k]; + } + pg *= 0.25; + + /* If pitch gain is low and energy constant - increase noise level*/ + /* Matlab code: + pg = 0:.01:.45; plot(pg, 0.0 + 1.0 * exp( -1.0 * exp(-200.0 * pg.*pg.*pg) / (1.0 + 0.4 * 0) )) + */ + *varscale = 0.0 + 1.0 * exp( -1.4 * exp(-200.0 * pg*pg*pg) / (1.0 + 0.4 * chng) ); + + *oldEnergy = nrg[3]; +} + +void +WebRtcIsac_GetVarsUB( + const double* input, + double* oldEnergy, + double* varscale) +{ + double nrg[4], chng; + int k; + + /* Calculate energies of first and second frame halfs */ + nrg[0] = 0.0001; + for (k = 0; k < (FRAMESAMPLES_QUARTER) / 2; k++) { + nrg[0] += input[k]*input[k]; + } + nrg[1] = 0.0001; + for ( ; k < (FRAMESAMPLES_HALF) / 2; k++) { + nrg[1] += input[k]*input[k]; + } + nrg[2] = 0.0001; + for ( ; k < (FRAMESAMPLES*3/4) / 2; k++) { + nrg[2] += input[k]*input[k]; + } + nrg[3] = 0.0001; + for ( ; k < (FRAMESAMPLES) / 2; k++) { + nrg[3] += input[k]*input[k]; + } + + /* Calculate average level change */ + chng = 0.25 * (fabs(10.0 * log10(nrg[3] / nrg[2])) + + fabs(10.0 * log10(nrg[2] / nrg[1])) + + fabs(10.0 * log10(nrg[1] / nrg[0])) + + fabs(10.0 * log10(nrg[0] / *oldEnergy))); + + + /* If pitch gain is low and energy constant - increase noise level*/ + /* Matlab code: + pg = 0:.01:.45; plot(pg, 0.0 + 1.0 * exp( -1.0 * exp(-200.0 * pg.*pg.*pg) / (1.0 + 0.4 * 0) )) + */ + *varscale = exp( -1.4 / (1.0 + 0.4 * chng) ); + + *oldEnergy = nrg[3]; +} + +void WebRtcIsac_GetLpcCoefLb(double *inLo, double *inHi, MaskFiltstr *maskdata, + double signal_noise_ratio, const WebRtc_Word16 *pitchGains_Q12, + double *lo_coeff, double *hi_coeff) +{ + int k, n, j, pos1, pos2; + double varscale; + + double DataLo[WINLEN], DataHi[WINLEN]; + double corrlo[ORDERLO+2], corrlo2[ORDERLO+1]; + double corrhi[ORDERHI+1]; + double k_veclo[ORDERLO], k_vechi[ORDERHI]; + + double a_LO[ORDERLO+1], a_HI[ORDERHI+1]; + double tmp, res_nrg; + + double FwdA, FwdB; + + /* hearing threshold level in dB; higher value gives more noise */ + const double HearThresOffset = -28.0; + + /* bandwdith expansion factors for low- and high band */ + const double gammaLo = 0.9; + const double gammaHi = 0.8; + + /* less-noise-at-low-frequencies factor */ + double aa; + + + /* convert from dB to signal level */ + const double H_T_H = pow(10.0, 0.05 * HearThresOffset); + double S_N_R = pow(10.0, 0.05 * signal_noise_ratio) / 3.46; /* divide by sqrt(12) */ + + /* change quallevel depending on pitch gains and level fluctuations */ + WebRtcIsac_GetVars(inLo, pitchGains_Q12, &(maskdata->OldEnergy), &varscale); + + /* less-noise-at-low-frequencies factor */ + aa = 0.35 * (0.5 + 0.5 * varscale); + + /* replace data in buffer by new look-ahead data */ + for (pos1 = 0; pos1 < QLOOKAHEAD; pos1++) + maskdata->DataBufferLo[pos1 + WINLEN - QLOOKAHEAD] = inLo[pos1]; + + for (k = 0; k < SUBFRAMES; k++) { + + /* Update input buffer and multiply signal with window */ + for (pos1 = 0; pos1 < WINLEN - UPDATE/2; pos1++) { + maskdata->DataBufferLo[pos1] = maskdata->DataBufferLo[pos1 + UPDATE/2]; + maskdata->DataBufferHi[pos1] = maskdata->DataBufferHi[pos1 + UPDATE/2]; + DataLo[pos1] = maskdata->DataBufferLo[pos1] * kLpcCorrWindow[pos1]; + DataHi[pos1] = maskdata->DataBufferHi[pos1] * kLpcCorrWindow[pos1]; + } + pos2 = k * UPDATE/2; + for (n = 0; n < UPDATE/2; n++, pos1++) { + maskdata->DataBufferLo[pos1] = inLo[QLOOKAHEAD + pos2]; + maskdata->DataBufferHi[pos1] = inHi[pos2++]; + DataLo[pos1] = maskdata->DataBufferLo[pos1] * kLpcCorrWindow[pos1]; + DataHi[pos1] = maskdata->DataBufferHi[pos1] * kLpcCorrWindow[pos1]; + } + + /* Get correlation coefficients */ + WebRtcIsac_AutoCorr(corrlo, DataLo, WINLEN, ORDERLO+1); /* computing autocorrelation */ + WebRtcIsac_AutoCorr(corrhi, DataHi, WINLEN, ORDERHI); + + + /* less noise for lower frequencies, by filtering/scaling autocorrelation sequences */ + corrlo2[0] = (1.0+aa*aa) * corrlo[0] - 2.0*aa * corrlo[1]; + tmp = (1.0 + aa*aa); + for (n = 1; n <= ORDERLO; n++) { + corrlo2[n] = tmp * corrlo[n] - aa * (corrlo[n-1] + corrlo[n+1]); + } + tmp = (1.0+aa) * (1.0+aa); + for (n = 0; n <= ORDERHI; n++) { + corrhi[n] = tmp * corrhi[n]; + } + + /* add white noise floor */ + corrlo2[0] += 1e-6; + corrhi[0] += 1e-6; + + + FwdA = 0.01; + FwdB = 0.01; + + /* recursive filtering of correlation over subframes */ + for (n = 0; n <= ORDERLO; n++) { + maskdata->CorrBufLo[n] = FwdA * maskdata->CorrBufLo[n] + corrlo2[n]; + corrlo2[n] = ((1.0-FwdA)*FwdB) * maskdata->CorrBufLo[n] + (1.0-FwdB) * corrlo2[n]; + } + for (n = 0; n <= ORDERHI; n++) { + maskdata->CorrBufHi[n] = FwdA * maskdata->CorrBufHi[n] + corrhi[n]; + corrhi[n] = ((1.0-FwdA)*FwdB) * maskdata->CorrBufHi[n] + (1.0-FwdB) * corrhi[n]; + } + + /* compute prediction coefficients */ + WebRtcIsac_LevDurb(a_LO, k_veclo, corrlo2, ORDERLO); + WebRtcIsac_LevDurb(a_HI, k_vechi, corrhi, ORDERHI); + + /* bandwidth expansion */ + tmp = gammaLo; + for (n = 1; n <= ORDERLO; n++) { + a_LO[n] *= tmp; + tmp *= gammaLo; + } + + /* residual energy */ + res_nrg = 0.0; + for (j = 0; j <= ORDERLO; j++) { + for (n = 0; n <= j; n++) { + res_nrg += a_LO[j] * corrlo2[j-n] * a_LO[n]; + } + for (n = j+1; n <= ORDERLO; n++) { + res_nrg += a_LO[j] * corrlo2[n-j] * a_LO[n]; + } + } + + /* add hearing threshold and compute the gain */ + *lo_coeff++ = S_N_R / (sqrt(res_nrg) / varscale + H_T_H); + + /* copy coefficients to output array */ + for (n = 1; n <= ORDERLO; n++) { + *lo_coeff++ = a_LO[n]; + } + + + /* bandwidth expansion */ + tmp = gammaHi; + for (n = 1; n <= ORDERHI; n++) { + a_HI[n] *= tmp; + tmp *= gammaHi; + } + + /* residual energy */ + res_nrg = 0.0; + for (j = 0; j <= ORDERHI; j++) { + for (n = 0; n <= j; n++) { + res_nrg += a_HI[j] * corrhi[j-n] * a_HI[n]; + } + for (n = j+1; n <= ORDERHI; n++) { + res_nrg += a_HI[j] * corrhi[n-j] * a_HI[n]; + } + } + + /* add hearing threshold and compute of the gain */ + *hi_coeff++ = S_N_R / (sqrt(res_nrg) / varscale + H_T_H); + + /* copy coefficients to output array */ + for (n = 1; n <= ORDERHI; n++) { + *hi_coeff++ = a_HI[n]; + } + } +} + + + +/****************************************************************************** + * WebRtcIsac_GetLpcCoefUb() + * + * Compute LP coefficients and correlation coefficients. At 12 kHz LP + * coefficients of the first and the last sub-frame is computed. At 16 kHz + * LP coefficients of 4th, 8th and 12th sub-frames are computed. We always + * compute correlation coefficients of all sub-frames. + * + * Inputs: + * -inSignal : Input signal + * -maskdata : a structure keeping signal from previous frame. + * -bandwidth : specifies if the codec is in 0-16 kHz mode or + * 0-12 kHz mode. + * + * Outputs: + * -lpCoeff : pointer to a buffer where A-polynomials are + * written to (first coeff is 1 and it is not + * written) + * -corrMat : a matrix where correlation coefficients of each + * sub-frame are written to one row. + * -varscale : a scale used to compute LPC gains. + */ +void +WebRtcIsac_GetLpcCoefUb( + double* inSignal, + MaskFiltstr* maskdata, + double* lpCoeff, + double corrMat[][UB_LPC_ORDER + 1], + double* varscale, + WebRtc_Word16 bandwidth) +{ + int frameCntr, activeFrameCntr, n, pos1, pos2; + WebRtc_Word16 criterion1; + WebRtc_Word16 criterion2; + WebRtc_Word16 numSubFrames = SUBFRAMES * (1 + (bandwidth == isac16kHz)); + double data[WINLEN]; + double corrSubFrame[UB_LPC_ORDER+2]; + double reflecCoeff[UB_LPC_ORDER]; + + double aPolynom[UB_LPC_ORDER+1]; + double tmp; + + /* bandwdith expansion factors */ + const double gamma = 0.9; + + /* change quallevel depending on pitch gains and level fluctuations */ + WebRtcIsac_GetVarsUB(inSignal, &(maskdata->OldEnergy), varscale); + + /* replace data in buffer by new look-ahead data */ + for(frameCntr = 0, activeFrameCntr = 0; frameCntr < numSubFrames; + frameCntr++) + { + if(frameCntr == SUBFRAMES) + { + // we are in 16 kHz + varscale++; + WebRtcIsac_GetVarsUB(&inSignal[FRAMESAMPLES_HALF], + &(maskdata->OldEnergy), varscale); + } + /* Update input buffer and multiply signal with window */ + for(pos1 = 0; pos1 < WINLEN - UPDATE/2; pos1++) + { + maskdata->DataBufferLo[pos1] = maskdata->DataBufferLo[pos1 + + UPDATE/2]; + data[pos1] = maskdata->DataBufferLo[pos1] * kLpcCorrWindow[pos1]; + } + pos2 = frameCntr * UPDATE/2; + for(n = 0; n < UPDATE/2; n++, pos1++, pos2++) + { + maskdata->DataBufferLo[pos1] = inSignal[pos2]; + data[pos1] = maskdata->DataBufferLo[pos1] * kLpcCorrWindow[pos1]; + } + + /* Get correlation coefficients */ + /* computing autocorrelation */ + WebRtcIsac_AutoCorr(corrSubFrame, data, WINLEN, UB_LPC_ORDER+1); + memcpy(corrMat[frameCntr], corrSubFrame, + (UB_LPC_ORDER+1)*sizeof(double)); + + criterion1 = ((frameCntr == 0) || (frameCntr == (SUBFRAMES - 1))) && + (bandwidth == isac12kHz); + criterion2 = (((frameCntr+1) % 4) == 0) && + (bandwidth == isac16kHz); + if(criterion1 || criterion2) + { + /* add noise */ + corrSubFrame[0] += 1e-6; + /* compute prediction coefficients */ + WebRtcIsac_LevDurb(aPolynom, reflecCoeff, corrSubFrame, + UB_LPC_ORDER); + + /* bandwidth expansion */ + tmp = gamma; + for (n = 1; n <= UB_LPC_ORDER; n++) + { + *lpCoeff++ = aPolynom[n] * tmp; + tmp *= gamma; + } + activeFrameCntr++; + } + } +} + + + +/****************************************************************************** + * WebRtcIsac_GetLpcGain() + * + * Compute the LPC gains for each sub-frame, given the LPC of each sub-frame + * and the corresponding correlation coefficients. + * + * Inputs: + * -signal_noise_ratio : the desired SNR in dB. + * -numVecs : number of sub-frames + * -corrMat : a matrix of correlation coefficients where + * each row is a set of correlation coefficients of + * one sub-frame. + * -varscale : a scale computed when WebRtcIsac_GetLpcCoefUb() + * is called. + * + * Outputs: + * -gain : pointer to a buffer where LP gains are written. + * + */ +void +WebRtcIsac_GetLpcGain( + double signal_noise_ratio, + const double* filtCoeffVecs, + int numVecs, + double* gain, + double corrMat[][UB_LPC_ORDER + 1], + const double* varscale) +{ + WebRtc_Word16 j, n; + WebRtc_Word16 subFrameCntr; + double aPolynom[ORDERLO + 1]; + double res_nrg; + + const double HearThresOffset = -28.0; + const double H_T_H = pow(10.0, 0.05 * HearThresOffset); + /* divide by sqrt(12) = 3.46 */ + const double S_N_R = pow(10.0, 0.05 * signal_noise_ratio) / 3.46; + + aPolynom[0] = 1; + for(subFrameCntr = 0; subFrameCntr < numVecs; subFrameCntr++) + { + if(subFrameCntr == SUBFRAMES) + { + // we are in second half of a SWB frame. use new varscale + varscale++; + } + memcpy(&aPolynom[1], &filtCoeffVecs[(subFrameCntr * (UB_LPC_ORDER + 1)) + + 1], sizeof(double) * UB_LPC_ORDER); + + /* residual energy */ + res_nrg = 0.0; + for(j = 0; j <= UB_LPC_ORDER; j++) + { + for(n = 0; n <= j; n++) + { + res_nrg += aPolynom[j] * corrMat[subFrameCntr][j-n] * + aPolynom[n]; + } + for(n = j+1; n <= UB_LPC_ORDER; n++) + { + res_nrg += aPolynom[j] * corrMat[subFrameCntr][n-j] * + aPolynom[n]; + } + } + + /* add hearing threshold and compute the gain */ + gain[subFrameCntr] = S_N_R / (sqrt(res_nrg) / *varscale + H_T_H); + } +} diff --git a/src/mod/codecs/mod_iSAC/lpc_analysis.h b/src/mod/codecs/mod_iSAC/lpc_analysis.h new file mode 100644 index 0000000000..4eafeac7bc --- /dev/null +++ b/src/mod/codecs/mod_iSAC/lpc_analysis.h @@ -0,0 +1,50 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * lpc_analysis.h + * + * LPC functions + * + */ + +#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_ANALYSIS_H_ +#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_ANALYSIS_H_ + +#include "settings.h" +#include "structs.h" + +double WebRtcIsac_LevDurb(double *a, double *k, double *r, int order); + +void WebRtcIsac_GetVars(const double *input, const WebRtc_Word16 *pitchGains_Q12, + double *oldEnergy, double *varscale); + +void WebRtcIsac_GetLpcCoefLb(double *inLo, double *inHi, MaskFiltstr *maskdata, + double signal_noise_ratio, const WebRtc_Word16 *pitchGains_Q12, + double *lo_coeff, double *hi_coeff); + + +void WebRtcIsac_GetLpcGain( + double signal_noise_ratio, + const double* filtCoeffVecs, + int numVecs, + double* gain, + double corrLo[][UB_LPC_ORDER + 1], + const double* varscale); + +void WebRtcIsac_GetLpcCoefUb( + double* inSignal, + MaskFiltstr* maskdata, + double* lpCoeff, + double corr[][UB_LPC_ORDER + 1], + double* varscale, + WebRtc_Word16 bandwidth); + +#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_ANALYIS_H_ */ diff --git a/src/mod/codecs/mod_iSAC/lpc_gain_swb_tables.c b/src/mod/codecs/mod_iSAC/lpc_gain_swb_tables.c new file mode 100644 index 0000000000..25c69cbfef --- /dev/null +++ b/src/mod/codecs/mod_iSAC/lpc_gain_swb_tables.c @@ -0,0 +1,137 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * SWB_KLT_Tables_LPCGain.c + * + * This file defines tables used for entropy coding of LPC Gain + * of upper-band. + * + */ + +#include "lpc_gain_swb_tables.h" +#include "settings.h" +#include "typedefs.h" + +const double WebRtcIsac_kQSizeLpcGain = 0.100000; + +const double WebRtcIsac_kMeanLpcGain = -3.3822; + +/* +* The smallest reconstruction points for quantiztion of +* LPC gains. +*/ +const double WebRtcIsac_kLeftRecPointLpcGain[SUBFRAMES] = +{ + -0.800000, -1.000000, -1.200000, -2.200000, -3.000000, -12.700000 +}; + +/* +* Number of reconstruction points of quantizers for LPC Gains. +*/ +const WebRtc_Word16 WebRtcIsac_kNumQCellLpcGain[SUBFRAMES] = +{ + 17, 20, 25, 45, 77, 170 +}; +/* +* Starting index for entropy decoder to search for the right interval, +* one entry per LAR coefficient +*/ +const WebRtc_UWord16 WebRtcIsac_kLpcGainEntropySearch[SUBFRAMES] = +{ + 8, 10, 12, 22, 38, 85 +}; + +/* +* The following 6 vectors define CDF of 6 decorrelated LPC +* gains. +*/ +const WebRtc_UWord16 WebRtcIsac_kLpcGainCdfVec0[18] = +{ + 0, 10, 27, 83, 234, 568, 1601, 4683, 16830, 57534, 63437, + 64767, 65229, 65408, 65483, 65514, 65527, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcGainCdfVec1[21] = +{ + 0, 15, 33, 84, 185, 385, 807, 1619, 3529, 7850, 19488, + 51365, 62437, 64548, 65088, 65304, 65409, 65484, 65507, 65522, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcGainCdfVec2[26] = +{ + 0, 15, 29, 54, 89, 145, 228, 380, 652, 1493, 4260, + 12359, 34133, 50749, 57224, 60814, 62927, 64078, 64742, 65103, 65311, 65418, + 65473, 65509, 65521, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcGainCdfVec3[46] = +{ + 0, 8, 12, 16, 26, 42, 56, 76, 111, 164, 247, + 366, 508, 693, 1000, 1442, 2155, 3188, 4854, 7387, 11249, 17617, + 30079, 46711, 56291, 60127, 62140, 63258, 63954, 64384, 64690, 64891, 65031, + 65139, 65227, 65293, 65351, 65399, 65438, 65467, 65492, 65504, 65510, 65518, + 65523, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcGainCdfVec4[78] = +{ + 0, 17, 29, 39, 51, 70, 104, 154, 234, 324, 443, + 590, 760, 971, 1202, 1494, 1845, 2274, 2797, 3366, 4088, 4905, + 5899, 7142, 8683, 10625, 12983, 16095, 20637, 28216, 38859, 47237, 51537, + 54150, 56066, 57583, 58756, 59685, 60458, 61103, 61659, 62144, 62550, 62886, + 63186, 63480, 63743, 63954, 64148, 64320, 64467, 64600, 64719, 64837, 64939, + 65014, 65098, 65160, 65211, 65250, 65290, 65325, 65344, 65366, 65391, 65410, + 65430, 65447, 65460, 65474, 65487, 65494, 65501, 65509, 65513, 65518, 65520, + 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcGainCdfVec5[171] = +{ + 0, 10, 12, 14, 16, 18, 23, 29, 35, 42, 51, + 58, 65, 72, 78, 87, 96, 103, 111, 122, 134, 150, + 167, 184, 202, 223, 244, 265, 289, 315, 346, 379, 414, + 450, 491, 532, 572, 613, 656, 700, 751, 802, 853, 905, + 957, 1021, 1098, 1174, 1250, 1331, 1413, 1490, 1565, 1647, 1730, + 1821, 1913, 2004, 2100, 2207, 2314, 2420, 2532, 2652, 2783, 2921, + 3056, 3189, 3327, 3468, 3640, 3817, 3993, 4171, 4362, 4554, 4751, + 4948, 5142, 5346, 5566, 5799, 6044, 6301, 6565, 6852, 7150, 7470, + 7797, 8143, 8492, 8835, 9181, 9547, 9919, 10315, 10718, 11136, 11566, + 12015, 12482, 12967, 13458, 13953, 14432, 14903, 15416, 15936, 16452, 16967, + 17492, 18024, 18600, 19173, 19736, 20311, 20911, 21490, 22041, 22597, 23157, + 23768, 24405, 25034, 25660, 26280, 26899, 27614, 28331, 29015, 29702, 30403, + 31107, 31817, 32566, 33381, 34224, 35099, 36112, 37222, 38375, 39549, 40801, + 42074, 43350, 44626, 45982, 47354, 48860, 50361, 51845, 53312, 54739, 56026, + 57116, 58104, 58996, 59842, 60658, 61488, 62324, 63057, 63769, 64285, 64779, + 65076, 65344, 65430, 65500, 65517, 65535 +}; + +/* +* An array of pointers to CDFs of decorrelated LPC Gains +*/ +const WebRtc_UWord16* WebRtcIsac_kLpcGainCdfMat[SUBFRAMES] = +{ + WebRtcIsac_kLpcGainCdfVec0, WebRtcIsac_kLpcGainCdfVec1, + WebRtcIsac_kLpcGainCdfVec2, WebRtcIsac_kLpcGainCdfVec3, + WebRtcIsac_kLpcGainCdfVec4, WebRtcIsac_kLpcGainCdfVec5 +}; + +/* +* A matrix to decorrellate LPC gains of subframes. +*/ +const double WebRtcIsac_kLpcGainDecorrMat[SUBFRAMES][SUBFRAMES] = +{ + {-0.150860, 0.327872, 0.367220, 0.504613, 0.559270, 0.409234}, + { 0.457128, -0.613591, -0.289283, -0.029734, 0.393760, 0.418240}, + {-0.626043, 0.136489, -0.439118, -0.448323, 0.135987, 0.420869}, + { 0.526617, 0.480187, 0.242552, -0.488754, -0.158713, 0.411331}, + {-0.302587, -0.494953, 0.588112, -0.063035, -0.404290, 0.387510}, + { 0.086378, 0.147714, -0.428875, 0.548300, -0.570121, 0.401391} +}; diff --git a/src/mod/codecs/mod_iSAC/lpc_gain_swb_tables.h b/src/mod/codecs/mod_iSAC/lpc_gain_swb_tables.h new file mode 100644 index 0000000000..1eba97c8ba --- /dev/null +++ b/src/mod/codecs/mod_iSAC/lpc_gain_swb_tables.h @@ -0,0 +1,49 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * SWB_KLT_Tables_LPCGain.h + * + * This file declares tables used for entropy coding of LPC Gain + * of upper-band. + * + */ + +#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_GAIN_SWB_TABLES_H_ +#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_GAIN_SWB_TABLES_H_ + +#include "settings.h" +#include "typedefs.h" + +extern const double WebRtcIsac_kQSizeLpcGain; + +extern const double WebRtcIsac_kLeftRecPointLpcGain[SUBFRAMES]; + +extern const WebRtc_Word16 WebRtcIsac_kNumQCellLpcGain[SUBFRAMES]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcGainEntropySearch[SUBFRAMES]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcGainCdfVec0[18]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcGainCdfVec1[21]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcGainCdfVec2[26]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcGainCdfVec3[46]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcGainCdfVec4[78]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcGainCdfVec5[171]; + +extern const WebRtc_UWord16* WebRtcIsac_kLpcGainCdfMat[SUBFRAMES]; + +extern const double WebRtcIsac_kLpcGainDecorrMat[SUBFRAMES][SUBFRAMES]; + +#endif // WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_GAIN_SWB_TABLES_H_ diff --git a/src/mod/codecs/mod_iSAC/lpc_shape_swb12_tables.c b/src/mod/codecs/mod_iSAC/lpc_shape_swb12_tables.c new file mode 100644 index 0000000000..695d583277 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/lpc_shape_swb12_tables.c @@ -0,0 +1,159 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * SWB_KLT_Tables.c + * + * This file defines tables used for entropy coding of LPC shape of + * upper-band signal if the bandwidth is 12 kHz. + * + */ + +#include "lpc_shape_swb12_tables.h" +#include "settings.h" +#include "typedefs.h" + +/* +* Mean value of LAR +*/ +const double WebRtcIsac_kMeanLarUb12[UB_LPC_ORDER] = +{ + 0.03748928306641, 0.09453441192543, -0.01112522344398, 0.03800237516842 +}; + +/* +* A rotation matrix to decorrelate intra-vector correlation, +* i.e. correlation among components of LAR vector. +*/ +const double WebRtcIsac_kIntraVecDecorrMatUb12[UB_LPC_ORDER][UB_LPC_ORDER] = +{ + {-0.00075365493856, -0.05809964887743, -0.23397966154116, 0.97050367376411}, + { 0.00625021257734, -0.17299965610679, 0.95977735920651, 0.22104179375008}, + { 0.20543384258374, -0.96202143495696, -0.15301870801552, -0.09432375099565}, + {-0.97865075648479, -0.20300322280841, -0.02581111653779, -0.01913568980258} +}; + +/* +* A rotation matrix to remove correlation among LAR coefficients +* of different LAR vectors. One might guess that decorrelation matrix +* for the first component should differ from the second component +* but we haven't observed a significant benefit of having different +* decorrelation matrices for different components. +*/ +const double WebRtcIsac_kInterVecDecorrMatUb12 +[UB_LPC_VEC_PER_FRAME][UB_LPC_VEC_PER_FRAME] = +{ + { 0.70650597970460, -0.70770707262373}, + {-0.70770707262373, -0.70650597970460} +}; + +/* +* LAR quantization step-size. +*/ +const double WebRtcIsac_kLpcShapeQStepSizeUb12 = 0.150000; + +/* +* The smallest reconstruction points for quantiztion of LAR coefficients. +*/ +const double WebRtcIsac_kLpcShapeLeftRecPointUb12 +[UB_LPC_ORDER*UB_LPC_VEC_PER_FRAME] = +{ + -0.900000, -1.050000, -1.350000, -1.800000, -1.350000, -1.650000, + -2.250000, -3.450000 +}; + +/* +* Number of reconstruction points of quantizers for LAR coefficients. +*/ +const WebRtc_Word16 WebRtcIsac_kLpcShapeNumRecPointUb12 +[UB_LPC_ORDER * UB_LPC_VEC_PER_FRAME] = +{ + 13, 15, 19, 27, 19, 24, 32, 48 +}; + +/* +* Starting index for entropy decoder to search for the right interval, +* one entry per LAR coefficient +*/ +const WebRtc_UWord16 WebRtcIsac_kLpcShapeEntropySearchUb12 +[UB_LPC_ORDER * UB_LPC_VEC_PER_FRAME] = +{ + 6, 7, 9, 13, 9, 12, 16, 24 +}; + +/* +* The following 8 vectors define CDF of 8 decorrelated LAR +* coefficients. +*/ +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec0Ub12[14] = +{ + 0, 13, 95, 418, 1687, 6498, 21317, 44200, 59029, 63849, 65147, + 65449, 65525, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec1Ub12[16] = +{ + 0, 10, 59, 255, 858, 2667, 8200, 22609, 42988, 57202, 62947, + 64743, 65308, 65476, 65522, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec2Ub12[20] = +{ + 0, 18, 40, 118, 332, 857, 2017, 4822, 11321, 24330, 41279, + 54342, 60637, 63394, 64659, 65184, 65398, 65482, 65518, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec3Ub12[28] = +{ + 0, 21, 38, 90, 196, 398, 770, 1400, 2589, 4650, 8211, + 14933, 26044, 39592, 50814, 57452, 60971, 62884, 63995, 64621, 65019, 65273, + 65410, 65480, 65514, 65522, 65531, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec4Ub12[20] = +{ + 0, 7, 46, 141, 403, 969, 2132, 4649, 10633, 24902, 43254, + 54665, 59928, 62674, 64173, 64938, 65293, 65464, 65523, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec5Ub12[25] = +{ + 0, 7, 22, 72, 174, 411, 854, 1737, 3545, 6774, 13165, + 25221, 40980, 52821, 58714, 61706, 63472, 64437, 64989, 65287, 65430, 65503, + 65525, 65529, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec6Ub12[33] = +{ + 0, 11, 21, 36, 65, 128, 228, 401, 707, 1241, 2126, + 3589, 6060, 10517, 18853, 31114, 42477, 49770, 54271, 57467, 59838, 61569, + 62831, 63772, 64433, 64833, 65123, 65306, 65419, 65466, 65499, 65519, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec7Ub12[49] = +{ + 0, 14, 34, 67, 107, 167, 245, 326, 449, 645, 861, + 1155, 1508, 2003, 2669, 3544, 4592, 5961, 7583, 9887, 13256, 18765, + 26519, 34077, 40034, 44349, 47795, 50663, 53262, 55473, 57458, 59122, 60592, + 61742, 62690, 63391, 63997, 64463, 64794, 65045, 65207, 65309, 65394, 65443, + 65478, 65504, 65514, 65523, 65535 +}; + +/* +* An array of pointers to CDFs of decorrelated LARs +*/ +const WebRtc_UWord16* WebRtcIsac_kLpcShapeCdfMatUb12 +[UB_LPC_ORDER * UB_LPC_VEC_PER_FRAME] = +{ + WebRtcIsac_kLpcShapeCdfVec0Ub12, WebRtcIsac_kLpcShapeCdfVec1Ub12, + WebRtcIsac_kLpcShapeCdfVec2Ub12, WebRtcIsac_kLpcShapeCdfVec3Ub12, + WebRtcIsac_kLpcShapeCdfVec4Ub12, WebRtcIsac_kLpcShapeCdfVec5Ub12, + WebRtcIsac_kLpcShapeCdfVec6Ub12, WebRtcIsac_kLpcShapeCdfVec7Ub12 +}; diff --git a/src/mod/codecs/mod_iSAC/lpc_shape_swb12_tables.h b/src/mod/codecs/mod_iSAC/lpc_shape_swb12_tables.h new file mode 100644 index 0000000000..1e93847fae --- /dev/null +++ b/src/mod/codecs/mod_iSAC/lpc_shape_swb12_tables.h @@ -0,0 +1,65 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * lpc_shape_swb12_tables.h + * + * This file declares tables used for entropy coding of LPC shape of + * upper-band signal if the bandwidth is 12 kHz. + * + */ + +#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_SHAPE_SWB12_TABLES_H_ +#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_SHAPE_SWB12_TABLES_H_ + +#include "settings.h" +#include "typedefs.h" + +extern const double WebRtcIsac_kMeanLarUb12[UB_LPC_ORDER]; + +extern const double WebRtcIsac_kMeanLpcGain; + +extern const double WebRtcIsac_kIntraVecDecorrMatUb12[UB_LPC_ORDER][UB_LPC_ORDER]; + +extern const double WebRtcIsac_kInterVecDecorrMatUb12 +[UB_LPC_VEC_PER_FRAME][UB_LPC_VEC_PER_FRAME]; + +extern const double WebRtcIsac_kLpcShapeQStepSizeUb12; + +extern const double WebRtcIsac_kLpcShapeLeftRecPointUb12 +[UB_LPC_ORDER*UB_LPC_VEC_PER_FRAME]; + + +extern const WebRtc_Word16 WebRtcIsac_kLpcShapeNumRecPointUb12 +[UB_LPC_ORDER * UB_LPC_VEC_PER_FRAME]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeEntropySearchUb12 +[UB_LPC_ORDER * UB_LPC_VEC_PER_FRAME]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec0Ub12[14]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec1Ub12[16]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec2Ub12[20]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec3Ub12[28]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec4Ub12[20]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec5Ub12[25]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec6Ub12[33]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec7Ub12[49]; + +extern const WebRtc_UWord16* WebRtcIsac_kLpcShapeCdfMatUb12 +[UB_LPC_ORDER * UB_LPC_VEC_PER_FRAME]; + +#endif // WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_SHAPE_SWB12_TABLES_H_ diff --git a/src/mod/codecs/mod_iSAC/lpc_shape_swb16_tables.c b/src/mod/codecs/mod_iSAC/lpc_shape_swb16_tables.c new file mode 100644 index 0000000000..89f45233f5 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/lpc_shape_swb16_tables.c @@ -0,0 +1,248 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * SWB16_KLT_Tables.c + * + * This file defines tables used for entropy coding of LPC shape of + * upper-band signal if the bandwidth is 16 kHz. + * + */ + +#include "lpc_shape_swb16_tables.h" +#include "settings.h" +#include "typedefs.h" + +/* +* Mean value of LAR +*/ +const double WebRtcIsac_kMeanLarUb16[UB_LPC_ORDER] = +{ +0.454978, 0.364747, 0.102999, 0.104523 +}; + +/* +* A rotation matrix to decorrelate intra-vector correlation, +* i.e. correlation among components of LAR vector. +*/ +const double WebRtcIsac_kIintraVecDecorrMatUb16[UB_LPC_ORDER][UB_LPC_ORDER] = +{ + {-0.020528, -0.085858, -0.002431, 0.996093}, + {-0.033155, 0.036102, 0.998786, 0.004866}, + { 0.202627, 0.974853, -0.028940, 0.088132}, + {-0.978479, 0.202454, -0.039785, -0.002811} +}; + +/* +* A rotation matrix to remove correlation among LAR coefficients +* of different LAR vectors. One might guess that decorrelation matrix +* for the first component should differ from the second component +* but we haven't observed a significant benefit of having different +* decorrelation matrices for different components. +*/ +const double WebRtcIsac_kInterVecDecorrMatUb16 +[UB16_LPC_VEC_PER_FRAME][UB16_LPC_VEC_PER_FRAME] = +{ + { 0.291675, -0.515786, 0.644927, 0.482658}, + {-0.647220, 0.479712, 0.289556, 0.516856}, + { 0.643084, 0.485489, -0.289307, 0.516763}, + {-0.287185, -0.517823, -0.645389, 0.482553} +}; + +/* +* The following 16 vectors define CDF of 16 decorrelated LAR +* coefficients. +*/ +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec01Ub16[14] = +{ + 0, 2, 20, 159, 1034, 5688, 20892, 44653, + 59849, 64485, 65383, 65518, 65534, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec1Ub16[16] = +{ + 0, 1, 7, 43, 276, 1496, 6681, 21653, + 43891, 58859, 64022, 65248, 65489, 65529, 65534, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec2Ub16[18] = +{ + 0, 1, 9, 54, 238, 933, 3192, 9461, + 23226, 42146, 56138, 62413, 64623, 65300, 65473, 65521, + 65533, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec3Ub16[30] = +{ + 0, 2, 4, 8, 17, 36, 75, 155, + 329, 683, 1376, 2662, 5047, 9508, 17526, 29027, + 40363, 48997, 55096, 59180, 61789, 63407, 64400, 64967, + 65273, 65429, 65497, 65526, 65534, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec4Ub16[16] = +{ + 0, 1, 10, 63, 361, 1785, 7407, 22242, + 43337, 58125, 63729, 65181, 65472, 65527, 65534, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec5Ub16[17] = +{ + 0, 1, 7, 29, 134, 599, 2443, 8590, + 22962, 42635, 56911, 63060, 64940, 65408, 65513, 65531, + 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec6Ub16[21] = +{ + 0, 1, 5, 16, 57, 191, 611, 1808, + 4847, 11755, 24612, 40910, 53789, 60698, 63729, 64924, + 65346, 65486, 65523, 65532, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec7Ub16[36] = +{ + 0, 1, 4, 12, 25, 55, 104, 184, + 314, 539, 926, 1550, 2479, 3861, 5892, 8845, + 13281, 20018, 29019, 38029, 45581, 51557, 56057, 59284, + 61517, 63047, 64030, 64648, 65031, 65261, 65402, 65480, + 65518, 65530, 65534, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec8Ub16[21] = +{ + 0, 1, 2, 7, 26, 103, 351, 1149, + 3583, 10204, 23846, 41711, 55361, 61917, 64382, 65186, + 65433, 65506, 65528, 65534, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec01Ub160[21] = +{ + 0, 6, 19, 63, 205, 638, 1799, 4784, + 11721, 24494, 40803, 53805, 60886, 63822, 64931, 65333, + 65472, 65517, 65530, 65533, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec01Ub161[28] = +{ + 0, 1, 3, 11, 31, 86, 221, 506, + 1101, 2296, 4486, 8477, 15356, 26079, 38941, 49952, + 57165, 61257, 63426, 64549, 65097, 65351, 65463, 65510, + 65526, 65532, 65534, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec01Ub162[55] = +{ + 0, 3, 12, 23, 42, 65, 89, 115, + 150, 195, 248, 327, 430, 580, 784, 1099, + 1586, 2358, 3651, 5899, 9568, 14312, 19158, 23776, + 28267, 32663, 36991, 41153, 45098, 48680, 51870, 54729, + 57141, 59158, 60772, 62029, 63000, 63761, 64322, 64728, + 65000, 65192, 65321, 65411, 65463, 65496, 65514, 65523, + 65527, 65529, 65531, 65532, 65533, 65534, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec01Ub163[26] = +{ + 0, 2, 4, 10, 21, 48, 114, 280, + 701, 1765, 4555, 11270, 24267, 41213, 54285, 61003, + 63767, 64840, 65254, 65421, 65489, 65514, 65526, 65532, + 65534, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec01Ub164[28] = +{ + 0, 1, 3, 6, 15, 36, 82, 196, + 453, 1087, 2557, 5923, 13016, 25366, 40449, 52582, + 59539, 62896, 64389, 65033, 65316, 65442, 65494, 65519, + 65529, 65533, 65534, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec01Ub165[34] = +{ + 0, 2, 4, 8, 18, 35, 73, 146, + 279, 524, 980, 1789, 3235, 5784, 10040, 16998, + 27070, 38543, 48499, 55421, 59712, 62257, 63748, 64591, + 65041, 65278, 65410, 65474, 65508, 65522, 65530, 65533, + 65534, 65535 +}; + +const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec01Ub166[71] = +{ + 0, 1, 2, 6, 13, 26, 55, 92, + 141, 191, 242, 296, 355, 429, 522, 636, + 777, 947, 1162, 1428, 1753, 2137, 2605, 3140, + 3743, 4409, 5164, 6016, 6982, 8118, 9451, 10993, + 12754, 14810, 17130, 19780, 22864, 26424, 30547, 35222, + 40140, 44716, 48698, 52056, 54850, 57162, 59068, 60643, + 61877, 62827, 63561, 64113, 64519, 64807, 65019, 65167, + 65272, 65343, 65399, 65440, 65471, 65487, 65500, 65509, + 65518, 65524, 65527, 65531, 65533, 65534, 65535 +}; + +/* +* An array of pointers to CDFs of decorrelated LARs +*/ +const WebRtc_UWord16* WebRtcIsac_kLpcShapeCdfMatUb16 +[UB_LPC_ORDER * UB16_LPC_VEC_PER_FRAME] = { + WebRtcIsac_kLpcShapeCdfVec01Ub16, + WebRtcIsac_kLpcShapeCdfVec1Ub16, + WebRtcIsac_kLpcShapeCdfVec2Ub16, + WebRtcIsac_kLpcShapeCdfVec3Ub16, + WebRtcIsac_kLpcShapeCdfVec4Ub16, + WebRtcIsac_kLpcShapeCdfVec5Ub16, + WebRtcIsac_kLpcShapeCdfVec6Ub16, + WebRtcIsac_kLpcShapeCdfVec7Ub16, + WebRtcIsac_kLpcShapeCdfVec8Ub16, + WebRtcIsac_kLpcShapeCdfVec01Ub160, + WebRtcIsac_kLpcShapeCdfVec01Ub161, + WebRtcIsac_kLpcShapeCdfVec01Ub162, + WebRtcIsac_kLpcShapeCdfVec01Ub163, + WebRtcIsac_kLpcShapeCdfVec01Ub164, + WebRtcIsac_kLpcShapeCdfVec01Ub165, + WebRtcIsac_kLpcShapeCdfVec01Ub166 +}; + +/* +* The smallest reconstruction points for quantiztion of LAR coefficients. +*/ +const double WebRtcIsac_kLpcShapeLeftRecPointUb16 +[UB_LPC_ORDER * UB16_LPC_VEC_PER_FRAME] = +{ + -0.8250, -0.9750, -1.1250, -2.1750, -0.9750, -1.1250, -1.4250, + -2.6250, -1.4250, -1.2750, -1.8750, -3.6750, -1.7250, -1.8750, + -2.3250, -5.4750 +}; + +/* +* Number of reconstruction points of quantizers for LAR coefficients. +*/ +const WebRtc_Word16 WebRtcIsac_kLpcShapeNumRecPointUb16 +[UB_LPC_ORDER * UB16_LPC_VEC_PER_FRAME] = +{ + 13, 15, 17, 29, 15, 16, 20, 35, 20, + 20, 27, 54, 25, 27, 33, 70 +}; + +/* +* Starting index for entropy decoder to search for the right interval, +* one entry per LAR coefficient +*/ +const WebRtc_UWord16 WebRtcIsac_kLpcShapeEntropySearchUb16 +[UB_LPC_ORDER * UB16_LPC_VEC_PER_FRAME] = +{ + 6, 7, 8, 14, 7, 8, 10, 17, 10, + 10, 13, 27, 12, 13, 16, 35 +}; + +/* +* LAR quantization step-size. +*/ +const double WebRtcIsac_kLpcShapeQStepSizeUb16 = 0.150000; diff --git a/src/mod/codecs/mod_iSAC/lpc_shape_swb16_tables.h b/src/mod/codecs/mod_iSAC/lpc_shape_swb16_tables.h new file mode 100644 index 0000000000..68d08b2047 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/lpc_shape_swb16_tables.h @@ -0,0 +1,79 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * lpc_shape_swb16_tables.h + * + * This file declares tables used for entropy coding of LPC shape of + * upper-band signal if the bandwidth is 16 kHz. + * + */ + +#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_SHAPE_SWB16_TABLES_H_ +#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_SHAPE_SWB16_TABLES_H_ + +#include "settings.h" +#include "typedefs.h" + + +extern const double WebRtcIsac_kMeanLarUb16[UB_LPC_ORDER]; + +extern const double WebRtcIsac_kIintraVecDecorrMatUb16[UB_LPC_ORDER][UB_LPC_ORDER]; + +extern const double WebRtcIsac_kInterVecDecorrMatUb16 +[UB16_LPC_VEC_PER_FRAME][UB16_LPC_VEC_PER_FRAME]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec01Ub16[14]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec1Ub16[16]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec2Ub16[18]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec3Ub16[30]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec4Ub16[16]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec5Ub16[17]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec6Ub16[21]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec7Ub16[36]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec8Ub16[21]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec01Ub160[21]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec01Ub161[28]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec01Ub162[55]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec01Ub163[26]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec01Ub164[28]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec01Ub165[34]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeCdfVec01Ub166[71]; + +extern const WebRtc_UWord16* WebRtcIsac_kLpcShapeCdfMatUb16 +[UB_LPC_ORDER * UB16_LPC_VEC_PER_FRAME]; + +extern const double WebRtcIsac_kLpcShapeLeftRecPointUb16 +[UB_LPC_ORDER * UB16_LPC_VEC_PER_FRAME]; + +extern const WebRtc_Word16 WebRtcIsac_kLpcShapeNumRecPointUb16 +[UB_LPC_ORDER * UB16_LPC_VEC_PER_FRAME]; + +extern const WebRtc_UWord16 WebRtcIsac_kLpcShapeEntropySearchUb16 +[UB_LPC_ORDER * UB16_LPC_VEC_PER_FRAME]; + +extern const double WebRtcIsac_kLpcShapeQStepSizeUb16; + +#endif // WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_SHAPE_SWB16_TABLES_H_ diff --git a/src/mod/codecs/mod_iSAC/lpc_tables.c b/src/mod/codecs/mod_iSAC/lpc_tables.c new file mode 100644 index 0000000000..7df6121462 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/lpc_tables.c @@ -0,0 +1,1129 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* coding tables for the KLT coefficients */ + +#include "lpc_tables.h" +#include "settings.h" + +/* indices of KLT coefficients used */ +const WebRtc_UWord16 WebRtcIsac_kQKltSelIndGain[12] = { + 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, + 10, 11}; + +const WebRtc_UWord16 WebRtcIsac_kQKltSelIndShape[108] = { + 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, + 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, + 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, + 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, + 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, + 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, + 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, + 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, + 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, + 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, + 100, 101, 102, 103, 104, 105, 106, 107}; + +/* cdf array for model indicator */ +const WebRtc_UWord16 WebRtcIsac_kQKltModelCdf[4] = { + 0, 15434, 37548, 65535}; + +/* pointer to cdf array for model indicator */ +const WebRtc_UWord16 *WebRtcIsac_kQKltModelCdfPtr[1] = {WebRtcIsac_kQKltModelCdf}; + +/* initial cdf index for decoder of model indicator */ +const WebRtc_UWord16 WebRtcIsac_kQKltModelInitIndex[1] = {1}; + +/* offset to go from rounded value to quantization index */ +const short WebRtcIsac_kQKltQuantMinGain[12] = { + 3, 6, 4, 6, 6, 9, 5, 16, 11, 34, 32, 47}; + + +const short WebRtcIsac_kQKltQuantMinShape[108] = { + 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, + 1, 1, 1, 1, 2, 2, 2, 3, 0, 0, + 0, 0, 1, 0, 0, 0, 0, 1, 1, 1, + 1, 1, 1, 2, 2, 3, 0, 0, 0, 0, + 1, 0, 1, 1, 1, 1, 1, 1, 1, 2, + 2, 4, 3, 5, 0, 0, 0, 0, 1, 1, + 1, 1, 1, 1, 2, 1, 2, 2, 3, 4, + 4, 7, 0, 0, 1, 1, 1, 1, 1, 1, + 1, 2, 3, 2, 3, 4, 4, 5, 7, 13, + 0, 1, 1, 2, 3, 2, 2, 2, 4, 4, + 5, 6, 7, 11, 9, 13, 12, 26}; + +/* maximum quantization index */ +const WebRtc_UWord16 WebRtcIsac_kQKltMaxIndGain[12] = { + 6, 12, 8, 14, 10, 19, 12, 31, 22, 56, 52, 138}; + +const WebRtc_UWord16 WebRtcIsac_kQKltMaxIndShape[108] = { + 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, + 2, 2, 2, 2, 4, 4, 5, 6, 0, 0, + 0, 0, 1, 0, 0, 0, 0, 1, 2, 2, + 2, 2, 3, 4, 5, 7, 0, 0, 0, 0, + 2, 0, 2, 2, 2, 2, 3, 2, 2, 4, + 4, 6, 6, 9, 0, 0, 0, 0, 2, 2, + 2, 2, 2, 2, 3, 2, 4, 4, 7, 7, + 9, 13, 0, 0, 2, 2, 2, 2, 2, 2, + 3, 4, 5, 4, 6, 8, 8, 10, 16, 25, + 0, 2, 2, 4, 5, 4, 4, 4, 7, 8, + 9, 10, 13, 19, 17, 23, 25, 49}; + +/* index offset */ +const WebRtc_UWord16 WebRtcIsac_kQKltOffsetGain[3][12] = { +{ 0, 7, 20, 29, 44, 55, 75, 88, 120, 143, + 200, 253}, +{ 0, 7, 19, 27, 42, 53, 73, 86, 117, 140, + 197, 249}, +{ 0, 7, 20, 28, 44, 55, 75, 89, 121, 145, + 202, 257}}; + +const WebRtc_UWord16 WebRtcIsac_kQKltOffsetShape[3][108] = { +{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, + 11, 14, 17, 20, 23, 28, 33, 39, 46, 47, + 48, 49, 50, 52, 53, 54, 55, 56, 58, 61, + 64, 67, 70, 74, 79, 85, 93, 94, 95, 96, + 97, 100, 101, 104, 107, 110, 113, 117, 120, 123, + 128, 133, 140, 147, 157, 158, 159, 160, 161, 164, + 167, 170, 173, 176, 179, 183, 186, 191, 196, 204, + 212, 222, 236, 237, 238, 241, 244, 247, 250, 253, + 256, 260, 265, 271, 276, 283, 292, 301, 312, 329, + 355, 356, 359, 362, 367, 373, 378, 383, 388, 396, + 405, 415, 426, 440, 460, 478, 502, 528}, +{ 0, 1, 2, 3, 4, 6, 7, 8, 9, 11, + 13, 16, 19, 22, 26, 29, 34, 39, 45, 46, + 47, 48, 49, 50, 51, 52, 53, 55, 57, 60, + 63, 66, 70, 73, 78, 84, 91, 92, 93, 94, + 95, 96, 97, 99, 102, 105, 108, 111, 114, 118, + 123, 128, 134, 141, 151, 152, 153, 154, 156, 159, + 162, 165, 168, 171, 174, 177, 181, 186, 194, 200, + 208, 218, 233, 234, 235, 236, 239, 242, 245, 248, + 251, 254, 258, 263, 270, 277, 288, 297, 308, 324, + 349, 351, 354, 357, 361, 366, 372, 378, 383, 390, + 398, 407, 420, 431, 450, 472, 496, 524}, +{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 11, + 14, 17, 20, 23, 26, 29, 34, 40, 47, 48, + 49, 50, 51, 52, 53, 54, 55, 58, 61, 64, + 67, 70, 73, 77, 82, 88, 96, 97, 98, 99, + 101, 102, 104, 107, 110, 113, 116, 119, 122, 125, + 129, 134, 141, 150, 160, 161, 162, 163, 166, 168, + 171, 174, 177, 180, 183, 186, 190, 195, 201, 208, + 216, 226, 243, 244, 245, 248, 251, 254, 257, 260, + 263, 268, 273, 278, 284, 291, 299, 310, 323, 340, + 366, 368, 371, 374, 379, 383, 389, 394, 399, 406, + 414, 422, 433, 445, 461, 480, 505, 533}}; + +/* initial cdf index for KLT coefficients */ +const WebRtc_UWord16 WebRtcIsac_kQKltInitIndexGain[3][12] = { +{ 3, 6, 4, 7, 5, 10, 6, 16, 11, 28, + 26, 69}, +{ 3, 6, 4, 7, 5, 10, 6, 15, 11, 28, + 26, 69}, +{ 3, 6, 4, 8, 5, 10, 7, 16, 12, 28, + 27, 70}}; + +const WebRtc_UWord16 WebRtcIsac_kQKltInitIndexShape[3][108] = { +{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, + 1, 1, 1, 1, 2, 2, 3, 3, 0, 0, + 0, 0, 1, 0, 0, 0, 0, 1, 1, 1, + 1, 1, 2, 2, 3, 4, 0, 0, 0, 0, + 1, 0, 1, 1, 1, 1, 2, 1, 1, 2, + 2, 3, 3, 5, 0, 0, 0, 0, 1, 1, + 1, 1, 1, 1, 2, 1, 2, 2, 4, 4, + 5, 7, 0, 0, 1, 1, 1, 1, 1, 1, + 2, 2, 3, 2, 3, 4, 4, 5, 8, 13, + 0, 1, 1, 2, 3, 2, 2, 2, 4, 4, + 5, 5, 7, 10, 9, 12, 13, 25}, +{ 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, + 1, 1, 1, 2, 1, 2, 2, 3, 0, 0, + 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, + 1, 2, 1, 2, 3, 3, 0, 0, 0, 0, + 0, 0, 1, 1, 1, 1, 1, 1, 2, 2, + 2, 3, 3, 5, 0, 0, 0, 1, 1, 1, + 1, 1, 1, 1, 1, 2, 2, 4, 3, 4, + 5, 7, 0, 0, 0, 1, 1, 1, 1, 1, + 1, 2, 2, 3, 3, 5, 4, 5, 8, 12, + 1, 1, 1, 2, 2, 3, 3, 2, 3, 4, + 4, 6, 5, 9, 11, 12, 14, 25}, +{ 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, + 1, 1, 1, 1, 1, 2, 3, 3, 0, 0, + 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, + 1, 1, 2, 2, 3, 4, 0, 0, 0, 1, + 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, + 2, 3, 4, 5, 0, 0, 0, 1, 1, 1, + 1, 1, 1, 1, 1, 2, 2, 3, 3, 4, + 5, 8, 0, 0, 1, 1, 1, 1, 1, 1, + 2, 2, 2, 3, 3, 4, 5, 6, 8, 13, + 1, 1, 1, 2, 2, 3, 2, 2, 3, 4, + 4, 5, 6, 8, 9, 12, 14, 25}}; + +/* offsets for quantizer representation levels*/ +const WebRtc_UWord16 WebRtcIsac_kQKltOfLevelsGain[3] = { + 0, 392, 779}; + +const WebRtc_UWord16 WebRtcIsac_kQKltOfLevelsShape[3] = { + 0, 578, 1152}; + +/* quantizer representation levels */ +const double WebRtcIsac_kQKltLevelsGain[1176] = { +-2.78127126, -1.76745590, -0.77913790, -0.00437329, 0.79961206, 1.81775776, 2.81389782, -5.78753143, -4.88384084, -3.89320940, +-2.88133610, -1.92859977, -0.86347396, 0.02003888, 0.86140400, 1.89667156, 2.97134967, 3.98781964, 4.91727277, 5.82865898, +-4.11195874, -2.80898424, -1.87547977, -0.80943825, -0.00679084, 0.79573851, 1.83953397, 2.67586037, 3.76274082, -6.10933968, +-4.93034581, -3.89281296, -2.91530625, -1.89684163, -0.85319130, -0.02275767, 0.86862017, 1.91578276, 2.96107339, 3.96543056, + 4.91369908, 5.91058154, 6.83848343, 8.07136925, -5.87470395, -4.84703049, -3.84284597, -2.86168446, -1.89290192, -0.82798145, +-0.00080013, 0.82594974, 1.85754329, 2.88351798, 3.96172628, -8.85684885, -7.87387461, -6.97811862, -5.93256270, -4.94301439, +-3.95513701, -2.96041544, -1.94031192, -0.87961478, -0.00456201, 0.89911505, 1.91723376, 2.94011511, 3.93302540, 4.97990967, + 5.93133404, 7.02181199, 7.92407762, 8.80155440, 10.04665814, -4.82396678, -3.85612158, -2.89482244, -1.89558408, -0.90036978, +-0.00677823, 0.90607989, 1.90937981, 2.91175777, 3.91637730, 4.97565723, 5.84771228, 7.11145863, -16.07879840, -15.03776309, +-13.93905670, -12.95671800, -11.89171202, -10.95820934, -9.95923714, -8.94357334, -7.99068299, -6.97481009, -5.94826231, -4.96673988, +-3.97490466, -2.97846970, -1.95130435, -0.94215262, -0.01444043, 0.96770704, 1.95848598, 2.94107862, 3.95666119, 4.97253085, + 5.97191122, 6.93277360, 7.96608727, 8.87958779, 10.00264269, 10.86560820, 12.07449071, 13.04491775, 13.97507061, 14.91845261, +-10.85696295, -9.83365357, -9.01245635, -7.95915145, -6.95625003, -5.95362618, -4.93468444, -3.98760978, -2.95044407, -1.97041277, +-0.97701799, -0.00840234, 0.97834289, 1.98361415, 2.97802439, 3.96415871, 4.95369042, 5.94101770, 6.92756798, 7.94063998, + 8.85951828, 9.97077022, 11.00068503, -33.92030406, -32.81426422, -32.00000000, -31.13243639, -30.11886909, -29.06017570, -28.12598824, +-27.22045482, -25.81215858, -25.07849962, -23.93018013, -23.02097643, -21.89529725, -20.99091085, -19.98889048, -18.94327044, -17.96562071, +-16.96126218, -15.95054062, -14.98516200, -13.97101012, -13.02106500, -11.98438006, -11.03216748, -9.95930286, -8.97043946, -7.98085082, +-6.98360995, -5.98998802, -4.98668173, -4.00032906, -3.00420619, -1.98701132, -0.99324682, -0.00609324, 0.98297834, 1.99483076, + 3.00305044, 3.97142097, 4.97525759, 5.98612258, 6.97448236, 7.97575900, 9.01086211, 9.98665542, 11.00541438, 11.98078628, + 12.92352471, 14.06849675, 14.99949430, 15.94904834, 16.97440321, 18.04040916, 18.88987609, 20.05312391, 21.00000000, 21.79443341, +-31.98578825, -31.00000000, -29.89060567, -28.98555686, -27.97114102, -26.84935410, -26.02402230, -24.94195278, -23.92336849, -22.95552382, +-21.97932836, -20.96055470, -19.99649553, -19.03436122, -17.96706525, -17.01139515, -16.01363516, -14.99154248, -14.00298333, -12.99630613, +-11.99955519, -10.99000421, -10.00819092, -8.99763648, -7.98431793, -7.01769025, -5.99604690, -4.99980697, -3.99334671, -3.01748192, +-2.02051217, -1.00848371, -0.01942358, 1.00477757, 1.95477872, 2.98593031, 3.98779079, 4.96862849, 6.02694771, 6.93983733, + 7.89874717, 8.99615862, 10.02367921, 10.96293452, 11.84351528, 12.92207187, 13.85122329, 15.05146877, 15.99371264, 17.00000000, + 18.00000000, 19.00000000, 19.82763573, -47.00000000, -46.00000000, -44.87138498, -44.00000000, -43.00000000, -42.00000000, -41.00000000, +-39.88966612, -38.98913239, -37.80306486, -37.23584325, -35.94200288, -34.99881301, -34.11361858, -33.06507360, -32.13129135, -30.90891364, +-29.81511907, -28.99250380, -28.04535391, -26.99767800, -26.04418164, -24.95687851, -24.04865595, -23.03392645, -21.89366707, -20.93517364, +-19.99388660, -18.91620943, -18.03749683, -16.99532379, -15.98683813, -15.06421479, -13.99359211, -12.99714098, -11.97022520, -10.98500279, +-9.98834422, -8.95729330, -8.01232284, -7.00253661, -5.99681626, -5.01207817, -3.95914904, -3.01232178, -1.96615919, -0.97687670, + 0.01228030, 0.98412288, 2.01753544, 3.00580570, 3.97783510, 4.98846894, 6.01321400, 7.00867732, 8.00416375, 9.01771966, + 9.98637729, 10.98255180, 11.99194163, 13.01807333, 14.00999545, 15.00118556, 16.00089224, 17.00584148, 17.98251763, 18.99942091, + 19.96917690, 20.97839265, 21.98207297, 23.00171271, 23.99930737, 24.99746061, 26.00936304, 26.98240132, 28.01126868, 29.01395915, + 29.98153507, 31.01376711, 31.99876818, 33.00475317, 33.99753994, 34.99493913, 35.98933585, 36.95620160, 37.98428461, 38.99317544, + 40.01832073, 40.98048133, 41.95999283, 42.98232091, 43.96523612, 44.99574268, 45.99524194, 47.05464025, 48.03821548, 48.99354366, + 49.96400411, 50.98017973, 51.95184408, 52.96291806, 54.00194392, 54.96603783, 55.95623778, 57.03076595, 58.05889901, 58.99081551, + 59.97928121, 61.05071612, 62.03971580, 63.01286038, 64.01290338, 65.02074503, 65.99454594, 67.00399425, 67.96571257, 68.95305727, + 69.92030664, 70.95594862, 71.98088567, 73.04764124, 74.00285480, 75.02696330, 75.89837673, 76.93459997, 78.16266309, 78.83317543, + 80.00000000, 80.87251574, 82.09803524, 83.10671664, 84.00000000, 84.77023523, 86.00000000, 87.00000000, 87.92946897, 88.69159118, + 90.00000000, 90.90535270, -3.00000000, -2.00000000, -0.77592424, -0.00564307, 0.76727305, 2.00000000, 3.00000000, -6.00000000, +-5.00000000, -4.00000000, -2.92897924, -1.85623684, -0.72445303, -0.00119184, 0.72896652, 2.05710416, 3.17909894, 4.00000000, + 5.00000000, -3.00000000, -2.00000000, -0.67480586, -0.00028016, 0.66618169, 2.00000000, 3.00000000, 4.00000000, -7.00000000, +-6.00000000, -5.00000000, -3.78336783, -2.84811556, -2.04088844, -0.71114371, 0.03142493, 0.69662772, 1.91417930, 3.00000000, + 4.01411062, 5.00000000, 6.00000000, 7.00000000, -6.00000000, -5.00000000, -4.00000000, -3.00000000, -2.00000000, -0.63703469, + 0.00169604, 0.66294191, 1.83808563, 3.00000000, 4.00000000, -8.00000000, -7.00000000, -6.03082300, -5.00000000, -3.88061019, +-2.92670084, -1.99902336, -0.72898996, -0.02880170, 0.73769927, 1.95920233, 2.78356263, 4.08100921, 5.00000000, 6.00000000, + 6.78771437, 8.00000000, 9.00000000, 10.00000000, 11.00000000, -5.00000000, -4.00000000, -2.88150384, -1.89520024, -0.71479482, + 0.00962397, 0.72816030, 1.73583550, 3.00000000, 4.00000000, 5.00000000, 6.00000000, 7.00000000, -16.00000000, -15.00000000, +-13.80516401, -13.00000000, -12.00000000, -11.00000000, -10.02723144, -9.11825995, -8.05820112, -7.00000000, -6.17943541, -5.01837980, +-3.97546169, -2.92806857, -1.89778775, -0.81138893, -0.02246016, 0.80528415, 1.85705214, 2.96438524, 3.97540151, 4.79684246, + 6.00000000, 6.75549513, 8.12185828, 9.00000000, 10.00000000, 11.00000000, 12.00000000, 13.00000000, 14.00000000, -11.00000000, +-10.00000000, -9.00000000, -7.91603344, -6.77865892, -5.85765006, -4.93342332, -3.96679157, -2.84925552, -1.89230732, -0.85384229, + 0.00579591, 0.84863246, 1.89006713, 2.89483818, 3.87322971, 5.13228411, 6.00000000, 7.00000000, 8.00000000, 9.00000000, + 10.00000000, 11.00000000, -34.00000000, -33.00000000, -32.00000000, -31.00000000, -30.00000000, -29.00000000, -28.00000000, -27.00000000, +-26.00000000, -25.00000000, -24.00000000, -23.00000000, -22.00000000, -21.00000000, -20.19501953, -19.00000000, -18.00000000, -17.00000000, +-16.00000000, -14.89069633, -14.00000000, -13.00000000, -12.16260304, -11.15418282, -9.83543570, -8.85600407, -7.82712677, -7.05664308, +-5.97007352, -4.89268438, -3.93822771, -2.94975269, -1.92192127, -0.90702480, 0.03974847, 0.92488359, 1.93747579, 2.94500522, + 3.95181797, 4.95433087, 5.95141808, 7.00212920, 8.02964757, 9.03210585, 9.84644504, 10.82907720, 11.87622530, 12.96908371, + 14.00000000, 15.16963413, 15.94902025, 17.00000000, 18.00000000, 19.00000000, 20.00000000, 21.00000000, 22.00000000, -29.00000000, +-27.79780781, -27.00757888, -26.01571026, -24.89695568, -23.99946491, -22.98699614, -21.96678139, -20.99883532, -20.00851529, -18.94738054, +-17.98672566, -16.98684787, -15.96917397, -14.99856852, -13.98974852, -12.97786927, -11.96110939, -10.98877093, -9.99875257, -8.99001359, +-8.00799989, -6.99471760, -6.00034670, -4.99936372, -4.00581479, -3.00424577, -2.02047620, -0.99713266, -0.00366397, 1.00803955, + 1.98452687, 3.00748501, 4.02714611, 4.97661026, 5.99337271, 6.99754716, 8.00713602, 8.97184974, 9.98047901, 10.97685939, + 11.99533975, 12.96107876, 13.95061478, 15.00756776, 15.94078690, 16.88231059, 17.92069248, 18.78011047, 20.00000000, 21.00000000, + 22.00000000, -55.76988333, -54.96048193, -53.88411581, -52.94117980, -51.80983449, -50.90359699, -50.00000000, -48.99838741, -47.97685542, +-47.03288597, -45.97820919, -45.02418374, -43.90081897, -42.88832512, -41.98234549, -40.96745512, -39.98148729, -39.06792854, -37.96493755, +-36.98707870, -36.03416079, -35.01192444, -33.95785029, -32.99469087, -31.96633807, -31.01769053, -29.99727691, -28.99329690, -27.98873019, +-27.00344273, -25.97657141, -25.00511074, -23.96689479, -23.01566842, -22.01632643, -21.00076343, -19.97788007, -18.97248680, -17.96076284, +-16.97585453, -15.98345587, -15.01612745, -13.96862118, -12.96622055, -12.02196641, -11.02078103, -9.98445656, -9.00050060, -8.03442387, +-7.00363761, -5.97921358, -4.98886269, -4.00528221, -3.01672947, -1.98599795, -1.00668518, -0.02633490, 1.00794139, 2.00837138, + 2.99213287, 3.98710216, 4.99064334, 6.01416391, 7.01759708, 7.97878151, 8.99665730, 10.02656114, 11.01863887, 12.01207901, + 13.00958725, 13.99237829, 15.00954971, 16.00724653, 17.00606559, 17.99886292, 18.99611967, 19.98808171, 21.01871930, 21.97014763, + 22.99833843, 24.00316842, 24.99949142, 25.98539601, 27.02480733, 27.98075377, 28.98266019, 30.00611445, 30.99409128, 31.94523141, + 32.97688339, 33.98800206, 35.00177074, 35.98639997, 36.98939428, 37.95644255, 39.00114054, 39.99492439, 40.99338254, 41.97050844, + 43.03085663, 43.96757668, 44.97800970, 45.95953358, 46.98109551, 47.99368477, 49.00141209, 49.94459923, 50.93298108, 51.99894661, + 53.06463883, 53.99704669, 55.02037199, 55.98368047, 57.01930954, 58.03813852, 58.96232502, 60.01644186, 61.03254711, 62.01086576, + 62.87962247, 63.98378413, 65.02189831, 65.93003954, 66.92439900, 68.07051633, 68.95928756, 70.03315022, 71.05579859, 72.00000000, + 73.00000000, 74.00000000, 75.00000000, 75.93485291, 77.20950456, 78.00000000, 79.00000000, 79.91519960, 81.00000000, -3.00000000, +-2.00000000, -0.65174074, -0.00092112, 0.62967387, 2.00000000, 3.00000000, -6.00000000, -5.00000000, -4.00000000, -2.89861729, +-1.69999061, -0.72632201, 0.00219241, 0.72891750, 1.73257865, 3.00000000, 3.76561508, 5.00000000, 6.00000000, -3.00000000, +-2.00000000, -0.66227013, 0.00389373, 0.66163500, 2.00000000, 3.00000000, 4.00000000, -8.00000000, -7.00000000, -6.00000000, +-4.76421796, -4.04320264, -3.01415201, -1.84346485, -0.77185048, 0.00061977, 0.76274524, 1.84330156, 3.00000000, 4.00000000, + 5.00000000, 6.00000000, 7.00000000, -6.00000000, -5.00000000, -4.00000000, -3.00000000, -1.75749611, -0.72951347, -0.00104394, + 0.72040315, 1.72594036, 3.00000000, 4.00000000, -9.00000000, -8.00000000, -7.00000000, -5.90394062, -5.00000000, -3.75562807, +-2.89699407, -1.86696610, -0.79056636, -0.00330943, 0.79744554, 1.85149941, 2.91118681, 3.99520311, 4.96341987, 6.00000000, + 7.00000000, 8.00000000, 9.00000000, 10.00000000, -6.00000000, -4.80151529, -4.00000000, -2.87442856, -1.85285815, -0.77767592, +-0.02071301, 0.81752572, 1.82503940, 2.79602150, 3.92870203, 5.00000000, 6.00000000, 7.00000000, -17.00000000, -16.00000000, +-15.00000000, -14.00000000, -13.00000000, -12.00000000, -11.00000000, -9.80059874, -9.00000000, -8.00185204, -7.13087808, -5.92942149, +-4.77883243, -3.93417708, -2.88004618, -1.89952522, -0.86239337, 0.00332274, 0.86657548, 1.89479279, 2.89701813, 3.90987417, + 4.98910145, 6.07676766, 7.00000000, 8.00000000, 9.00000000, 10.00000000, 11.00000000, 12.00000000, 13.00000000, 14.00000000, +-12.00000000, -11.00000000, -9.89996262, -8.85894205, -7.87594823, -6.99685317, -5.94917589, -4.93914916, -3.93317670, -2.93174244, +-1.90737478, -0.90982242, 0.00803316, 0.90111563, 1.90362879, 2.90332432, 3.90654662, 4.94461954, 5.87963665, 6.91988113, + 7.79514004, 8.98805413, 10.00000000, 11.00000000, -35.00000000, -34.00000000, -33.00000000, -32.00000000, -31.00000000, -30.00000000, +-29.00000000, -28.00000000, -27.00000000, -26.00000000, -25.00000000, -24.00000000, -22.88310970, -22.00000000, -21.00000000, -20.00000000, +-19.00000000, -18.00000000, -17.00000000, -16.11854974, -15.00000000, -14.10507667, -13.04497040, -11.94846700, -10.97432494, -9.94514368, +-8.97311414, -7.94171496, -6.97232122, -5.98590548, -4.97455572, -3.95477903, -2.93935454, -1.95573532, -0.97120273, -0.02084826, + 0.95689153, 1.96679781, 2.97060165, 3.96660892, 4.96754331, 5.97996089, 6.93822411, 7.96618014, 8.95809791, 9.98891474, + 10.95713402, 11.85433084, 13.03831696, 13.84035295, 15.00729606, 15.98652872, 17.20557599, 18.00000000, 18.90794805, 20.00000000, + 21.00000000, -34.00000000, -33.00000000, -32.00000000, -31.00000000, -30.00000000, -28.97280602, -28.00000000, -27.16255057, -26.04078092, +-24.85442050, -24.15783484, -22.78614956, -21.95739865, -21.21844626, -20.03008104, -19.03888543, -17.90460490, -17.02064693, -15.84673652, +-14.87140709, -13.87996048, -12.94907251, -11.96795995, -11.00977925, -9.95103238, -8.96674655, -7.96351667, -6.96886200, -5.99335494, +-4.97515534, -3.98891694, -2.99581150, -1.98758360, -0.99249128, -0.00001403, 0.98807868, 1.99119869, 2.99019366, 3.98612953, + 5.00312941, 5.98833080, 6.99686651, 7.98373889, 8.97942222, 9.94202752, 10.99671622, 11.94306164, 12.98539825, 13.90728690, + 14.89907642, 15.94836675, 16.89611342, 17.84084949, 18.74910958, 20.00000000, -67.00000000, -66.00000000, -65.00000000, -64.00000000, +-63.02511977, -62.00000000, -61.06061493, -59.95964043, -59.12824439, -58.00000000, -57.00000000, -56.00000000, -54.87857996, -54.09689334, +-53.00000000, -52.21057366, -50.93867921, -50.03032952, -49.19283867, -47.89439051, -46.99505692, -46.04895543, -44.89687413, -43.78942208, +-42.99025156, -41.88436155, -40.99169704, -40.00320429, -38.90181498, -38.06029271, -37.05030818, -36.07554573, -35.03202233, -33.93117946, +-32.97736655, -31.98942819, -30.99546798, -30.01511004, -28.97296525, -28.02561164, -26.94386985, -25.99632704, -25.00461143, -24.01578192, +-22.99177609, -22.02261094, -20.97939001, -19.96176066, -19.00442980, -18.01529434, -17.00196902, -15.99794828, -14.98675055, -13.97517657, +-12.98676283, -11.99718760, -11.00167809, -9.98872268, -9.02138474, -8.00320338, -6.99542797, -6.00059136, -5.01311763, -4.00336943, +-3.00348281, -1.99365875, -0.98223019, 0.00126343, 0.99699237, 1.99381968, 3.00054436, 3.99898305, 5.00160508, 6.00310399, + 6.99885096, 8.02740039, 8.99515550, 9.98962151, 11.00642302, 11.98694516, 13.00018933, 13.97726018, 14.99186645, 16.00580131, + 16.97434224, 17.96982658, 19.00066438, 20.01228749, 21.00741822, 21.94988312, 23.00860212, 23.98801542, 24.97638417, 25.98003521, + 27.02336188, 27.99667029, 29.01014125, 30.02481912, 31.01415797, 31.97399854, 33.06214485, 33.99929330, 34.94095386, 35.96368372, + 36.96980925, 37.98389244, 39.01121235, 40.00715026, 41.06382894, 41.96618280, 43.01555590, 43.95430436, 45.01970038, 45.99967821, + 47.19847394, 48.04852502, 49.10609965, 50.04244122, 50.86051406, 51.92983796, 53.02781107, 54.06248545, 54.89942009, 56.08347165, + 57.06887956, 58.09671115, 59.07832400, 59.87005277, 61.14778499, 62.00000000, 63.00000000, 64.00000000, 65.00000000, 66.00000000, + 67.00000000, 68.00000000, 69.00000000, 70.00000000, 71.00000000, 72.00000000}; + +const double WebRtcIsac_kQKltLevelsShape[1735] = { + 0.00032397, 0.00008053, -0.00061202, -0.00012620, 0.00030437, 0.00054764, -0.00027902, 0.00069360, 0.00029449, -0.80219239, + 0.00091089, -0.74514927, -0.00094283, 0.64030631, -0.60509119, 0.00035575, 0.61851665, -0.62129957, 0.00375219, 0.60054900, +-0.61554359, 0.00054977, 0.63362016, -1.73118727, -0.65422341, 0.00524568, 0.66165298, 1.76785515, -1.83182018, -0.65997434, +-0.00011887, 0.67524299, 1.79933938, -1.76344480, -0.72547708, -0.00133017, 0.73104704, 1.75305377, 2.85164534, -2.80423916, +-1.71959639, -0.75419722, -0.00329945, 0.77196760, 1.72211069, 2.87339653, 0.00031089, -0.00015311, 0.00018201, -0.00035035, +-0.77357251, 0.00154647, -0.00047625, -0.00045299, 0.00086590, 0.00044762, -0.83383829, 0.00024787, -0.68526258, -0.00122472, + 0.64643255, -0.60904942, -0.00448987, 0.62309184, -0.59626442, -0.00574132, 0.62296546, -0.63222115, 0.00013441, 0.63609545, +-0.66911055, -0.00369971, 0.66346095, 2.07281301, -1.77184694, -0.67640425, -0.00010145, 0.64818392, 1.74948973, -1.69420224, +-0.71943894, -0.00004680, 0.75303493, 1.81075983, 2.80610041, -2.80005755, -1.79866753, -0.77409777, -0.00084220, 0.80141293, + 1.78291081, 2.73954236, 3.82994169, 0.00015140, -0.00012766, -0.00034241, -0.00119125, -0.76113497, 0.00069246, 0.76722027, + 0.00132862, -0.69107530, 0.00010656, 0.77061578, -0.78012970, 0.00095947, 0.77828502, -0.64787758, 0.00217168, 0.63050167, +-0.58601125, 0.00306596, 0.59466308, -0.58603410, 0.00059779, 0.64257970, 1.76512766, -0.61193600, -0.00259517, 0.59767574, +-0.61026273, 0.00315811, 0.61725479, -1.69169719, -0.65816029, 0.00067575, 0.65576890, 2.00000000, -1.72689193, -0.69780808, +-0.00040990, 0.70668487, 1.74198458, -3.79028154, -3.00000000, -1.73194459, -0.70179341, -0.00106695, 0.71302629, 1.76849782, +-2.89332364, -1.78585007, -0.78731491, -0.00132610, 0.79692976, 1.75247009, 2.97828682, -5.26238694, -3.69559829, -2.87286122, +-1.84908818, -0.84434577, -0.01167975, 0.84641753, 1.84087672, 2.87628156, 3.83556679, -0.00190204, 0.00092642, 0.00354385, +-0.00012982, -0.67742785, 0.00229509, 0.64935672, -0.58444751, 0.00470733, 0.57299534, -0.58456202, -0.00097715, 0.64593607, +-0.64060330, -0.00638534, 0.59680157, -0.59287537, 0.00490772, 0.58919707, -0.60306173, -0.00417464, 0.60562100, -1.75218757, +-0.63018569, -0.00225922, 0.63863300, -0.63949939, -0.00126421, 0.64268914, -1.75851182, -0.68318060, 0.00510418, 0.69049211, + 1.88178506, -1.71136148, -0.72710534, -0.00815559, 0.73412917, 1.79996711, -2.77111145, -1.73940498, -0.78212945, 0.01074476, + 0.77688916, 1.76873972, 2.87281379, 3.77554698, -3.75832725, -2.95463235, -1.80451491, -0.80017226, 0.00149902, 0.80729206, + 1.78265046, 2.89391793, -3.78236148, -2.83640598, -1.82532067, -0.88844327, -0.00620952, 0.88208030, 1.85757631, 2.81712391, + 3.88430176, 5.16179367, -7.00000000, -5.93805408, -4.87172597, -3.87524433, -2.89399744, -1.92359563, -0.92136341, -0.00172725, + 0.93087018, 1.90528280, 2.89809686, 3.88085708, 4.89147740, 5.89078692, -0.00239502, 0.00312564, -1.00000000, 0.00178325, + 1.00000000, -0.62198029, 0.00143254, 0.65344051, -0.59851220, -0.00676987, 0.61510140, -0.58894151, 0.00385055, 0.59794203, +-0.59808568, -0.00038214, 0.57625703, -0.63009713, -0.01107985, 0.61278758, -0.64206758, -0.00154369, 0.65480598, 1.80604162, +-1.80909286, -0.67810514, 0.00205762, 0.68571097, 1.79453891, -3.22682422, -1.73808453, -0.71870305, -0.00738594, 0.71486172, + 1.73005326, -1.66891897, -0.73689615, -0.00616203, 0.74262409, 1.73807899, -2.92417482, -1.73866741, -0.78133871, 0.00764425, + 0.80027264, 1.78668732, 2.74992588, -4.00000000, -2.75578740, -1.83697516, -0.83117035, -0.00355191, 0.83527172, 1.82814700, + 2.77377675, 3.80718693, -3.81667698, -2.83575471, -1.83372350, -0.86579471, 0.00547578, 0.87582281, 1.82858793, 2.87265007, + 3.91405377, -4.87521600, -3.78999094, -2.86437014, -1.86964365, -0.90618018, 0.00128243, 0.91497811, 1.87374952, 2.83199819, + 3.91519130, 4.76632822, -6.68713448, -6.01252467, -4.94587936, -3.88795368, -2.91299088, -1.92592211, -0.95504570, -0.00089980, + 0.94565200, 1.93239633, 2.91832808, 3.91363475, 4.88920034, 5.96471415, 6.83905252, 7.86195009, 8.81571018, -12.96141759, +-11.73039516, -10.96459719, -9.97382433, -9.04414433, -7.89460619, -6.96628608, -5.93236595, -4.93337924, -3.95479990, -2.96451499, +-1.96635876, -0.97271229, -0.00402238, 0.98343930, 1.98348291, 2.96641164, 3.95456471, 4.95517089, 5.98975714, 6.90322073, + 7.90468849, 8.85639467, 9.97255498, 10.79006309, 11.81988596, 0.04950500, -1.00000000, -0.01226628, 1.00000000, -0.59479469, +-0.10438305, 0.59822144, -2.00000000, -0.67109149, -0.09256692, 0.65171621, 2.00000000, -3.00000000, -1.68391999, -0.76681039, +-0.03354151, 0.71509146, 1.77615472, -2.00000000, -0.68661511, -0.02497881, 0.66478398, 2.00000000, -2.00000000, -0.67032784, +-0.00920582, 0.64892756, 2.00000000, -2.00000000, -0.68561894, 0.03641869, 0.73021611, 1.68293863, -4.00000000, -2.72024184, +-1.80096059, -0.81696185, 0.03604685, 0.79232033, 1.70070730, 3.00000000, -4.00000000, -2.71795670, -1.80482986, -0.86001162, + 0.03764903, 0.87723968, 1.79970771, 2.72685932, 3.67589143, -5.00000000, -4.00000000, -2.85492548, -1.78996365, -0.83250358, +-0.01376828, 0.84195506, 1.78161105, 2.76754458, 4.00000000, -6.00000000, -5.00000000, -3.82268811, -2.77563624, -1.82608163, +-0.86486114, -0.02671886, 0.86693165, 1.88422879, 2.86248347, 3.95632216, -7.00000000, -6.00000000, -5.00000000, -3.77533988, +-2.86391432, -1.87052039, -0.90513658, 0.06271236, 0.91083620, 1.85734756, 2.86031688, 3.82019418, 4.94420394, 6.00000000, +-11.00000000, -10.00000000, -9.00000000, -8.00000000, -6.91952415, -6.00000000, -4.92044374, -3.87845165, -2.87392362, -1.88413020, +-0.91915740, 0.00318517, 0.91602800, 1.89664838, 2.88925058, 3.84123856, 4.78988651, 5.94526812, 6.81953917, 8.00000000, +-9.00000000, -8.00000000, -7.03319143, -5.94530963, -4.86669720, -3.92438007, -2.88620396, -1.92848070, -0.94365985, 0.01671855, + 0.97349410, 1.93419878, 2.89740109, 3.89662823, 4.83235583, 5.88106535, 6.80328232, 8.00000000, -13.00000000, -12.00000000, +-11.00000000, -10.00000000, -9.00000000, -7.86033489, -6.83344055, -5.89844215, -4.90811454, -3.94841298, -2.95820490, -1.98627966, +-0.99161468, -0.02286136, 0.96055651, 1.95052433, 2.93969396, 3.94304346, 4.88522624, 5.87434241, 6.78309433, 7.87244101, + 9.00000000, 10.00000000, -12.09117356, -11.00000000, -10.00000000, -8.84766108, -7.86934236, -6.98544896, -5.94233429, -4.95583292, +-3.95575986, -2.97085529, -1.98955811, -0.99359873, -0.00485413, 0.98298870, 1.98093258, 2.96430203, 3.95540216, 4.96915010, + 5.96775124, 6.99236918, 7.96503302, 8.99864542, 9.85857723, 10.96541926, 11.91647197, 12.71060069, -26.00000000, -25.00000000, +-24.00585596, -23.11642573, -22.14271284, -20.89800711, -19.87815799, -19.05036354, -17.88555651, -16.86471209, -15.97711073, -14.94012359, +-14.02661226, -12.98243228, -11.97489256, -10.97402777, -9.96425624, -9.01085220, -7.97372506, -6.98795002, -5.97271328, -5.00191694, +-3.98055849, -2.98458048, -1.99470442, -0.99656768, -0.00825666, 1.00272004, 1.99922218, 2.99357669, 4.01407905, 5.01003897, + 5.98115528, 7.00018958, 8.00338125, 8.98981046, 9.98990318, 10.96341479, 11.96866930, 12.99175139, 13.94580443, 14.95745083, + 15.98992869, 16.97484646, 17.99630043, 18.93396897, 19.88347741, 20.96532482, 21.92191032, 23.22314702, 0.00006846, 0.00014352, +-0.00056203, 0.00027588, -0.00147678, 1.00000000, 0.00003823, 0.00001975, -0.00033710, -0.00096712, 1.00000000, -1.00000000, + 0.00067511, -1.00000000, 0.00342065, 1.00000000, -1.00000000, 0.00196254, 1.00000000, -1.00000000, 0.00201173, 1.00000000, +-2.00000000, -1.00000000, -0.00381686, 1.00000000, -1.00000000, 0.00178037, 1.00000000, -2.00000000, -1.00000000, -0.00320274, + 1.00000000, 2.00000000, -2.00000000, -1.00000000, 0.00426519, 1.00000000, 2.00000000, -3.00000000, -2.00000000, -1.00000000, +-0.00074072, 0.64654602, 2.00000000, 0.00031217, 0.00063348, 0.00020247, 0.00047891, 0.00122893, -0.00150669, -0.00148276, + 0.00016848, 0.00147085, 1.00000000, -0.00088160, 1.00000000, -1.00000000, 0.00381641, 1.00000000, -1.00000000, 0.00129816, + 1.00000000, -1.00000000, 0.00074903, 1.00000000, -2.00000000, -0.76230566, -0.00370764, 0.82467977, -0.78769346, -0.00492670, + 0.84532630, -2.00000000, -0.70943195, -0.01257613, 0.75905385, 2.00000000, -2.00000000, -0.62780445, -0.00408633, 0.60272506, + 2.00000000, 3.00000000, -3.00000000, -2.00000000, -0.61412985, 0.00102833, 0.61527589, 2.00000000, 3.00000000, 0.00012115, +-0.00080909, 0.00071061, -0.00227957, 0.00179794, 0.00103827, -1.00000000, 0.00444757, -1.00000000, 0.00604068, 1.00000000, +-1.00000000, 0.00427327, 1.00000000, -1.00000000, 0.00086662, 1.00000000, -1.00000000, -0.00837492, 1.00000000, -0.65715934, +-0.00645342, 0.64004630, -2.00000000, -0.64987682, -0.01449567, 0.69893373, -2.00000000, -0.63221961, 0.00421765, 0.62452105, + 2.00000000, -2.00000000, -0.60027006, -0.00110630, 0.62033821, 2.00000000, -2.00000000, -0.59823932, 0.00928313, 0.62188520, + 2.00000000, 3.00000000, -3.00000000, -2.00000000, -0.63230286, -0.00248555, 0.62632575, 2.00000000, 3.00000000, -5.00000000, +-4.00000000, -3.00000000, -2.00000000, -0.66521143, 0.00544305, 0.66930486, 2.00000000, 3.00000000, 4.00000000, 0.00077008, + 0.00061140, -0.00009317, -0.00049643, 1.00000000, -1.00000000, -0.00285084, 1.00000000, -1.00000000, 0.00601784, 1.00000000, +-1.00000000, -0.00091887, 0.75122772, -0.71579859, -0.00043545, 1.00000000, -0.85571363, -0.00227654, 0.63816873, -1.00000000, +-0.00393484, 0.76748004, -0.58223659, -0.01229777, 0.58080322, -0.61945902, -0.00232238, 0.62277938, 2.00000000, -2.00000000, +-0.60595489, -0.00535702, 0.60547736, 2.00000000, -4.00000000, -3.00000000, -2.00000000, -0.62368122, 0.01112097, 0.63997294, + 2.00000000, 3.00000000, -3.00000000, -2.00000000, -0.64318217, 0.00515139, 0.64781184, 2.00000000, -3.00000000, -1.78031579, +-0.67122588, 0.02153711, 0.67899877, 2.00000000, 3.00000000, 4.00000000, -4.00000000, -3.00000000, -1.80503233, -0.69835727, +-0.00270770, 0.70999554, 1.77332849, 3.00000000, 4.00000000, 5.00000000, -8.00000000, -7.00000000, -6.00000000, -5.00000000, +-4.00000000, -2.81600693, -1.72970368, -0.73779413, -0.01384841, 0.75694606, 1.80042618, 3.00000000, 4.00000000, 5.00000000, + 6.00000000, -0.00051787, 0.00059593, -0.00023319, -1.00000000, 0.00191861, 0.79547197, -0.75020995, 0.00217840, 0.69165833, +-1.00000000, -0.00304964, 0.67698951, -0.64516943, -0.00657667, 0.59260129, -0.62819301, -0.00456626, 0.59426260, -0.60909519, + 0.00256476, 0.61660408, -0.66560131, -0.00293463, 0.67477566, 2.00000000, -2.00000000, -0.62484067, 0.00505116, 0.63491494, + 2.00000000, -3.00000000, -2.00000000, -0.68427246, 0.00924353, 0.68755774, 2.00000000, 3.00000000, -3.00000000, -2.00000000, +-0.65390928, 0.01008025, 0.65849449, 2.00000000, 3.00000000, -5.00000000, -4.00000000, -3.00000000, -1.70848232, -0.72079538, +-0.00007674, 0.71556176, 1.76815351, 3.00000000, 4.00000000, 5.00000000, -4.00000000, -3.00000000, -1.82887466, -0.73529886, + 0.00033458, 0.73847588, 1.83009515, 3.00000000, 4.00000000, -5.00000000, -4.00000000, -2.83203553, -1.79500085, -0.77452749, +-0.00614320, 0.77416943, 1.82469471, 2.77034612, 4.00000000, 5.00000000, -7.00000000, -6.00000000, -5.00000000, -4.00000000, +-2.76574798, -1.84700836, -0.80822297, 0.00054165, 0.80901445, 1.85687331, 2.75680191, 3.81986695, 5.00000000, 6.00000000, + 7.00000000, 8.00000000, -13.00000000, -12.00000000, -11.00000000, -10.00000000, -9.00000000, -8.00000000, -7.00000000, -6.00000000, +-5.00000000, -3.88304817, -2.93396067, -1.86645989, -0.84825410, 0.00666207, 0.84853252, 1.88634684, 2.95282618, 3.89813287, + 4.89189079, 6.00000000, 7.00000000, 8.00000000, 9.00000000, 10.00000000, 11.00000000, -0.00344877, 1.00000000, -0.61413659, +-0.02115630, 0.59438887, -0.60873054, 0.00844993, 0.62510557, -2.00000000, -0.75002947, 0.00120913, 0.66616051, -2.00000000, +-0.72324691, 0.04760499, 0.70532533, 2.00000000, -3.00000000, -1.66577589, -0.78941380, -0.01909714, 0.74993685, 1.70945570, +-1.64422308, -0.70992006, -0.02795108, 0.76990363, 1.79682243, 2.96233315, -1.71686461, -0.76572785, -0.00041846, 0.78174132, + 1.66217596, -3.00000000, -1.77033369, -0.79475091, 0.03709740, 0.80097076, 1.83947400, 2.85879773, -4.00000000, -3.16528651, +-1.79564411, -0.90078981, 0.02403102, 0.86138856, 1.84207433, 2.74584048, -4.00000000, -2.91249347, -1.87804769, -0.87323549, + 0.08164382, 0.89037056, 1.82505263, 2.71336163, 4.00000000, -4.81262228, -3.87173565, -2.83424209, -1.87517938, -0.86199960, + 0.00268598, 0.89547657, 1.90713511, 2.85219071, 3.86417171, 4.80711781, 6.00000000, 7.00000000, -5.00000000, -3.82388480, +-2.82875808, -1.90350457, -0.90795818, 0.03047007, 0.93676836, 1.88844957, 2.83269711, 3.76109686, 5.00000000, -9.00000000, +-8.00000000, -6.88037957, -5.88776398, -4.91209139, -3.93902541, -2.90989221, -1.92281230, -0.98960535, -0.07440511, 0.94023957, + 1.91666262, 2.83340828, 3.83651295, 4.77839424, 6.12284019, 7.00000000, 8.00000000, 9.00000000, -12.00000000, -11.00000000, +-10.00000000, -9.00000000, -8.00000000, -6.68554513, -5.97994708, -4.98789075, -3.91383581, -2.92952795, -1.91727195, -0.93148075, +-0.00568870, 0.93515148, 1.94580068, 2.93838956, 3.92567644, 4.96573603, 5.95402763, 7.00000000, 8.00000000, 9.00000000, +-11.00000000, -9.90096030, -8.97868124, -7.93663988, -6.98806055, -5.95937864, -4.93473664, -3.95454756, -2.96518446, -1.97711766, +-0.98552111, -0.03317271, 0.95115775, 1.93785086, 2.96310779, 3.93322450, 5.01716212, 5.85909823, 6.89163669, 7.97492693, + 8.85698897, 9.79802946, 11.09373957, 12.00000000, -13.00000000, -12.00000000, -10.67579109, -9.95079100, -8.90576592, -7.93254656, +-6.96112672, -5.96015798, -4.95493809, -3.98556269, -2.98182856, -1.98150255, -0.96551153, -0.00399791, 0.98644875, 1.98043830, + 2.97969033, 3.97728257, 4.95173541, 5.95649050, 6.96447378, 7.95591513, 9.07680954, 9.92093070, 10.76496555, 11.97525735, + 13.00000000, 14.00000000, -25.00000000, -24.00000000, -23.00000000, -22.00072357, -21.00000000, -20.00000000, -19.00000000, -18.20003462, +-17.01648407, -15.78651996, -14.95660266, -13.99167850, -13.28722978, -11.85013840, -10.92025302, -9.87055810, -8.93841040, -7.95329867, +-6.97819441, -6.01593394, -5.00905213, -3.99905285, -2.99171810, -1.99062796, -1.00112466, 0.00140492, 1.00701091, 2.02327185, + 3.00194633, 3.99188294, 5.00313145, 6.00448038, 6.98904951, 7.98158293, 8.98212774, 10.00363404, 10.98641678, 11.98034311, + 12.95176779, 13.95383703, 14.99084578, 15.98600642, 16.99406826, 17.98134623, 19.01793961, 19.86072639, 20.88465474, 21.99287082, + 22.81916620, 23.77946383, 0.00000234, 0.00000298, 0.00000048, 0.00002408, -0.00000165, -0.00001831, -0.00005703, -0.00000184, +-1.00000000, 0.00001977, 1.00000000, -1.00000000, 0.00000010, 1.00000000, -1.00000000, -0.00001152, 1.00000000, -1.00000000, + 0.00000840, 1.00000000, -1.00000000, 0.00002353, 1.00000000, -0.75455603, -0.00001433, 1.00000000, -0.65859705, -0.00000703, + 0.62995860, -2.00000000, -0.72724652, -0.00033969, 0.61359174, 2.00000000, -2.00000000, -0.69510998, -0.00031410, 0.66467605, + 2.00000000, 3.00000000, -3.00000000, -2.00000000, -0.65738683, 0.00039019, 0.66554720, 1.91774106, 3.18089124, 0.00000070, + 0.00001152, -0.00000795, -0.00000058, -0.00003502, -0.00001508, -0.00004225, -0.00002165, -1.00000000, 0.00004391, 1.00000000, +-1.00000000, 0.00001784, 1.00000000, -1.00000000, -0.00003678, 1.00000000, -0.68878314, -0.00013166, 0.60880149, -0.75291978, + 0.00006493, 1.00000000, -0.76757316, 0.00003057, 0.67140524, -0.61602267, -0.00014495, 0.63625803, 2.00000000, -2.00000000, +-0.61253314, -0.00116483, 0.65071851, 2.00000000, -3.00000000, -1.71451667, -0.67799909, -0.00048294, 0.65846019, 2.00000000, +-3.02497593, -1.83515395, -0.70317981, 0.00519701, 0.67780009, 1.84218153, 2.88846262, 4.00000000, 0.00001124, 0.00000588, +-0.00000172, 0.00002835, 1.00000000, 0.00001012, -0.00008644, 1.00000000, -0.75115901, 0.00004347, 1.00000000, -1.00000000, + 0.00002800, 1.00000000, -1.00000000, -0.00006039, 1.00000000, -0.79763258, -0.00011907, 0.71713616, -0.76791870, -0.00007113, + 0.63583609, -0.62337806, 0.00012891, 0.62242094, -0.60837055, 0.00043216, 0.65515705, -0.63637782, -0.00019749, 0.60423967, + 2.00000000, -2.00000000, -0.65404827, -0.00089304, 0.64706660, 2.00000000, -1.86334076, -0.66410366, 0.00063219, 0.66968004, + 2.00000000, 3.00000000, 4.00000000, -4.00000000, -3.00000000, -1.79048834, -0.69451890, 0.00030677, 0.71009333, 1.70591343, + 3.00000000, 4.00000000, -4.00000000, -2.90176499, -1.78368781, -0.74425178, 0.00234068, 0.74847325, 1.78886822, 2.78478854, + 3.83608985, 4.95996151, 0.00002170, 0.00001281, 0.00002162, -1.00000000, -0.00007266, 1.00000000, -1.00000000, -0.00003250, +-0.64088804, 0.00015239, 1.00000000, -0.58450370, -0.00008410, 0.60567186, -1.00000000, -0.00010752, 1.00000000, -0.58922508, +-0.00017378, 0.60755779, -0.62797206, -0.00001016, 0.64432847, -0.58497934, -0.00001851, 0.59716791, -0.62642499, -0.00097386, + 0.63568558, 2.00000000, -2.00000000, -0.63236390, -0.00173361, 0.63142762, 1.75629192, -3.00000000, -2.00000000, -0.65596684, + 0.00209364, 0.65419742, 2.00000000, -3.00000000, -1.73856625, -0.67767521, -0.00119512, 0.68973603, 1.70985573, 3.00000000, +-3.00000000, -1.81820220, -0.73974134, 0.00695869, 0.72216179, 1.75624461, 3.00000000, 4.00000000, -5.00000000, -4.00000000, +-3.17718593, -1.76857567, -0.76822322, 0.00267400, 0.76414602, 1.84309221, 3.04940652, 4.00000000, -7.08189123, -6.00000000, +-5.22882249, -3.96477958, -2.79653492, -1.81923435, -0.80050253, -0.01086663, 0.82708565, 1.85804900, 2.89996354, 3.76028554, + 4.80518081, 5.81738096, 7.00000000, 8.00000000, 9.08816091, -0.00002979, -0.00000333, -1.00000000, -0.00011532, 1.00000000, +-0.70921122, -0.00005325, 0.68933188, -0.67581263, -0.00023107, 0.57868212, -0.58388312, -0.00020850, 0.60149012, -0.60912457, + 0.00001567, 0.60180554, -0.59130091, -0.00038863, 0.59908653, -2.00000000, -0.63697707, 0.00083913, 0.62040514, 2.00000000, +-2.00000000, -0.63216238, -0.00081100, 0.64411071, 2.00000000, -1.76856259, -0.65266989, -0.00243486, 0.66888899, 2.00000000, +-1.75427214, -0.71415385, -0.00226376, 0.71296778, 1.66182947, 3.00000000, -3.00000000, -1.72505821, -0.72920134, -0.00360424, + 0.73800767, 1.72848281, 3.00000000, -4.00000000, -2.95284408, -1.72025758, -0.76503859, 0.00418761, 0.75297139, 1.73959808, + 3.00000000, -5.00000000, -3.96232791, -2.74080544, -1.78897123, -0.80233505, -0.00002050, 0.79693417, 1.76182598, 2.78434458, + 3.85693287, 5.00000000, -6.00000000, -4.78439284, -3.83501790, -2.85203629, -1.84909573, -0.85382658, -0.00181019, 0.84735145, + 1.83676575, 2.83656843, 3.86722376, 4.79702431, 6.00000000, -9.00000000, -8.00000000, -7.00000000, -6.07957292, -4.84677515, +-3.85093972, -2.88683139, -1.84596391, -0.88058034, -0.00008692, 0.87554746, 1.86933183, 2.84729990, 3.89029797, 4.87311773, + 5.90844023, 7.00000000, -11.00000000, -9.97745420, -8.90015761, -7.94187517, -6.86987726, -5.84795335, -4.86693435, -3.90601819, +-2.91031804, -1.91620096, -0.90497055, 0.00659199, 0.90926869, 1.90980821, 2.91070850, 3.93685967, 4.85581177, 6.06727337, + 7.05801043, 8.00000000, 9.00000000, 10.00000000, 10.90825787, 12.00000000, 13.00000000, 14.00000000, -0.00008918, 1.00000000, +-0.54405938, 0.00120348, 0.55781920, -0.59227786, -0.00349602, 0.59777231, -1.63717598, -0.69048065, 0.00999281, 0.65770558, + 2.00000000, -2.00000000, -0.71013571, 0.00454518, 0.66991065, -3.00000000, -1.73004867, -0.73743921, 0.01162454, 0.69964842, + 1.83319587, -1.81225491, -0.76806000, 0.00164742, 0.76780397, 1.67168896, -1.64564794, -0.79903361, -0.01522880, 0.84277926, + 1.68873752, -3.00000000, -1.72063244, -0.83687428, 0.00246724, 0.84618697, 1.79464483, 2.77447025, -3.77118426, -2.75025539, +-1.82050448, -0.90373722, -0.00187780, 0.90102245, 1.85249394, 2.71364180, -2.71720889, -1.79466125, -0.89860801, -0.02725825, + 0.90877329, 1.90542096, 2.76847902, 3.71496428, -4.70257302, -3.90746659, -2.87078421, -1.88858709, -0.93608993, -0.02157425, + 0.95181182, 1.91155682, 2.83614575, 3.87820801, 4.72172277, -5.02764544, -3.80066801, -2.87484378, -1.90707477, -0.96326017, +-0.01060091, 0.96558851, 1.92191548, 2.86970759, 3.85655474, 4.83135970, 5.76387469, -9.00000000, -8.00000000, -6.75261776, +-5.86333393, -4.84846871, -3.91871758, -2.93827286, -1.93050320, -0.96359634, -0.00141931, 0.95926312, 1.92541870, 2.93009411, + 3.86699087, 4.82315929, 5.67815206, -8.76594345, -7.70350451, -6.91784020, -5.81539490, -4.92526872, -3.91513203, -2.92134949, +-1.95465646, -0.97638102, -0.00742564, 0.96948714, 1.96401112, 2.95256722, 3.93146353, 4.90991357, 5.88139022, 6.88640588, + 7.82610489, 9.00000000, -10.97611369, -9.80036760, -8.91109518, -7.92809404, -6.93865353, -5.91965899, -4.92957669, -3.95206224, +-2.97308718, -1.97778214, -0.98552568, -0.00063212, 0.98686014, 1.97511867, 2.97114218, 3.97854244, 4.96578513, 5.96457765, + 6.95180187, 7.95163483, 8.93760897, 9.87666900, 10.88024562, 11.96270158, 12.99519291, -15.00000000, -13.76826291, -12.97229116, +-12.00334834, -10.95980884, -9.98190891, -8.93798503, -7.95621309, -6.96109479, -5.96056649, -4.95843419, -3.97688640, -2.98989576, +-1.98533395, -0.99580972, 0.00694370, 0.99421120, 1.99033132, 2.98751217, 3.98549580, 4.96482394, 5.96623233, 6.93564626, + 7.93772467, 8.92015276, 9.88785129, 10.97606096, 11.79686057, -23.00000000, -22.00000000, -21.00000000, -20.00000000, -19.00000000, +-17.73310977, -16.83574096, -15.90889480, -15.00437366, -13.95007272, -12.99296117, -11.98334751, -10.96970820, -9.97775151, -8.98193840, +-7.98378966, -6.98887770, -5.99059477, -5.00228769, -3.99355850, -2.99947486, -1.99897483, -0.99375857, 0.00324880, 1.00215912, + 1.99277083, 3.00503747, 3.99390482, 4.98854283, 5.98753219, 6.98245347, 7.98089893, 8.95960522, 9.95663648, 11.00810285, + 12.01421617, 12.96208687, 13.99227766, 14.97230040, 15.95114804, 16.97347393, 17.97794884, 18.96777118, 19.94446034, 20.94799029, + 22.14740083, 22.84288347, 23.99212109, 25.00000000, 25.96562658}; + +/* cdf tables for quantizer indices */ +const WebRtc_UWord16 WebRtcIsac_kQKltCdfGain[1212] = { + 0, 13, 301, 3730, 61784, 65167, 65489, 65535, 0, 17, + 142, 314, 929, 2466, 7678, 56450, 63463, 64740, 65204, 65426, + 65527, 65535, 0, 8, 100, 724, 6301, 60105, 65125, 65510, + 65531, 65535, 0, 13, 117, 368, 1068, 3010, 11928, 53603, + 61177, 63404, 64505, 65108, 65422, 65502, 65531, 65535, 0, 4, + 17, 96, 410, 1859, 12125, 54361, 64103, 65305, 65497, 65535, + 0, 4, 88, 230, 469, 950, 1746, 3228, 6092, 16592, + 44756, 56848, 61256, 63308, 64325, 64920, 65309, 65460, 65502, 65522, + 65535, 0, 88, 352, 1675, 6339, 20749, 46686, 59284, 63525, + 64949, 65359, 65502, 65527, 65535, 0, 13, 38, 63, 117, + 234, 381, 641, 929, 1407, 2043, 2809, 4032, 5753, 8792, + 14407, 24308, 38941, 48947, 55403, 59293, 61411, 62688, 63630, 64329, + 64840, 65188, 65376, 65472, 65506, 65527, 65531, 65535, 0, 8, + 29, 75, 222, 615, 1327, 2801, 5623, 9931, 16094, 24966, + 34419, 43458, 50676, 56186, 60055, 62500, 63936, 64765, 65225, 65435, + 65514, 65535, 0, 8, 13, 15, 17, 21, 33, 59, + 71, 92, 151, 243, 360, 456, 674, 934, 1223, 1583, + 1989, 2504, 3031, 3617, 4354, 5154, 6163, 7411, 8780, 10747, + 12874, 15591, 18974, 23027, 27436, 32020, 36948, 41830, 46205, 49797, + 53042, 56094, 58418, 60360, 61763, 62818, 63559, 64103, 64509, 64798, + 65045, 65162, 65288, 65363, 65447, 65506, 65522, 65531, 65533, 65535, + 0, 4, 6, 25, 38, 71, 138, 264, 519, 808, + 1227, 1825, 2516, 3408, 4279, 5560, 7092, 9197, 11420, 14108, + 16947, 20300, 23926, 27459, 31164, 34827, 38575, 42178, 45540, 48747, + 51444, 54090, 56426, 58460, 60080, 61595, 62734, 63668, 64275, 64673, + 64936, 65112, 65217, 65334, 65426, 65464, 65477, 65489, 65518, 65527, + 65529, 65531, 65533, 65535, 0, 2, 4, 8, 10, 12, + 14, 16, 21, 33, 50, 71, 84, 92, 105, 138, + 180, 255, 318, 377, 435, 473, 511, 590, 682, 758, + 913, 1097, 1256, 1449, 1671, 1884, 2169, 2445, 2772, 3157, + 3563, 3944, 4375, 4848, 5334, 5820, 6448, 7101, 7716, 8378, + 9102, 9956, 10752, 11648, 12707, 13670, 14758, 15910, 17187, 18472, + 19627, 20649, 21951, 23169, 24283, 25552, 26862, 28227, 29391, 30764, + 31882, 33213, 34432, 35600, 36910, 38116, 39464, 40729, 41872, 43144, + 44371, 45514, 46762, 47813, 48968, 50069, 51032, 51974, 52908, 53737, + 54603, 55445, 56282, 56990, 57572, 58191, 58840, 59410, 59887, 60264, + 60607, 60946, 61269, 61516, 61771, 61960, 62198, 62408, 62558, 62776, + 62985, 63207, 63408, 63546, 63739, 63906, 64070, 64237, 64371, 64551, + 64677, 64836, 64999, 65095, 65213, 65284, 65338, 65380, 65426, 65447, + 65472, 65485, 65487, 65489, 65502, 65510, 65512, 65514, 65516, 65518, + 65522, 65531, 65533, 65535, 0, 2, 4, 6, 65528, 65531, + 65533, 65535, 0, 2, 4, 6, 8, 10, 222, 65321, + 65513, 65528, 65531, 65533, 65535, 0, 2, 4, 50, 65476, + 65529, 65531, 65533, 65535, 0, 2, 4, 6, 8, 12, + 38, 544, 64936, 65509, 65523, 65525, 65529, 65531, 65533, 65535, + 0, 2, 4, 6, 8, 10, 1055, 64508, 65528, 65531, + 65533, 65535, 0, 2, 4, 6, 8, 10, 12, 123, + 3956, 62999, 65372, 65495, 65515, 65521, 65523, 65525, 65527, 65529, + 65531, 65533, 65535, 0, 2, 4, 12, 53, 4707, 59445, + 65467, 65525, 65527, 65529, 65531, 65533, 65535, 0, 2, 4, + 6, 8, 10, 12, 14, 16, 38, 40, 50, 67, + 96, 234, 929, 14345, 55750, 64866, 65389, 65462, 65514, 65517, + 65519, 65521, 65523, 65525, 65527, 65529, 65531, 65533, 65535, 0, + 2, 4, 6, 8, 10, 15, 35, 91, 377, 1946, + 13618, 52565, 63714, 65184, 65465, 65520, 65523, 65525, 65527, 65529, + 65531, 65533, 65535, 0, 2, 4, 6, 8, 10, 12, + 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, + 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, + 54, 82, 149, 362, 751, 1701, 4239, 12893, 38627, 55072, + 60875, 63071, 64158, 64702, 65096, 65283, 65412, 65473, 65494, 65505, + 65508, 65517, 65519, 65521, 65523, 65525, 65527, 65529, 65531, 65533, + 65535, 0, 2, 15, 23, 53, 143, 260, 418, 698, + 988, 1353, 1812, 2411, 3144, 4015, 5143, 6401, 7611, 8999, + 10653, 12512, 14636, 16865, 19404, 22154, 24798, 27521, 30326, 33102, + 35790, 38603, 41415, 43968, 46771, 49435, 52152, 54715, 57143, 59481, + 61178, 62507, 63603, 64489, 64997, 65257, 65427, 65473, 65503, 65520, + 65529, 65531, 65533, 65535, 0, 3, 6, 9, 26, 32, + 44, 46, 64, 94, 111, 164, 205, 254, 327, 409, + 506, 608, 733, 885, 1093, 1292, 1482, 1742, 1993, 2329, + 2615, 3029, 3374, 3798, 4257, 4870, 5405, 5992, 6618, 7225, + 7816, 8418, 9051, 9761, 10532, 11380, 12113, 13010, 13788, 14594, + 15455, 16361, 17182, 18088, 18997, 20046, 20951, 21968, 22947, 24124, + 25296, 26547, 27712, 28775, 29807, 30835, 31709, 32469, 33201, 34014, + 34876, 35773, 36696, 37620, 38558, 39547, 40406, 41277, 42367, 43290, + 44445, 45443, 46510, 47684, 48973, 50157, 51187, 52242, 53209, 54083, + 55006, 55871, 56618, 57293, 57965, 58556, 59222, 59722, 60180, 60554, + 60902, 61250, 61554, 61837, 62100, 62372, 62631, 62856, 63078, 63324, + 63557, 63768, 63961, 64089, 64235, 64352, 64501, 64633, 64770, 64887, + 65001, 65059, 65121, 65188, 65246, 65302, 65346, 65390, 65428, 65463, + 65477, 65506, 65515, 65517, 65519, 65521, 65523, 65525, 65527, 65529, + 65531, 65533, 65535, 0, 2, 4, 109, 65332, 65531, 65533, + 65535, 0, 2, 4, 6, 8, 25, 1817, 63874, 65511, + 65527, 65529, 65531, 65533, 65535, 0, 2, 4, 907, 65014, + 65529, 65531, 65533, 65535, 0, 2, 4, 6, 8, 10, + 12, 132, 2743, 62708, 65430, 65525, 65527, 65529, 65531, 65533, + 65535, 0, 2, 4, 6, 8, 35, 3743, 61666, 65485, + 65531, 65533, 65535, 0, 2, 4, 6, 8, 10, 23, + 109, 683, 6905, 58417, 64911, 65398, 65497, 65518, 65525, 65527, + 65529, 65531, 65533, 65535, 0, 2, 4, 6, 53, 510, + 10209, 55212, 64573, 65441, 65522, 65529, 65531, 65533, 65535, 0, + 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, + 22, 32, 90, 266, 1037, 3349, 14468, 50488, 62394, 64685, + 65341, 65480, 65514, 65519, 65521, 65523, 65525, 65527, 65529, 65531, + 65533, 65535, 0, 2, 4, 6, 9, 16, 37, 106, + 296, 748, 1868, 5733, 18897, 45553, 60165, 63949, 64926, 65314, + 65441, 65508, 65524, 65529, 65531, 65533, 65535, 0, 2, 4, + 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, + 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, + 46, 48, 50, 83, 175, 344, 667, 1293, 2337, 4357, + 8033, 14988, 28600, 43244, 52011, 57042, 59980, 61779, 63065, 63869, + 64390, 64753, 64988, 65164, 65326, 65422, 65462, 65492, 65506, 65522, + 65524, 65526, 65531, 65533, 65535, 0, 2, 4, 6, 8, + 10, 12, 14, 16, 25, 39, 48, 55, 62, 65, + 85, 106, 139, 169, 194, 252, 323, 485, 688, 1074, + 1600, 2544, 3863, 5733, 8303, 11397, 15529, 20273, 25734, 31455, + 36853, 41891, 46410, 50306, 53702, 56503, 58673, 60479, 61880, 62989, + 63748, 64404, 64852, 65124, 65309, 65424, 65480, 65524, 65528, 65533, + 65535, 0, 2, 4, 6, 8, 10, 12, 14, 21, + 23, 25, 27, 29, 31, 39, 41, 43, 48, 60, + 72, 79, 106, 136, 166, 187, 224, 252, 323, 381, + 427, 478, 568, 660, 783, 912, 1046, 1175, 1365, 1567, + 1768, 2024, 2347, 2659, 3049, 3529, 4033, 4623, 5281, 5925, + 6726, 7526, 8417, 9468, 10783, 12141, 13571, 15222, 16916, 18659, + 20350, 22020, 23725, 25497, 27201, 29026, 30867, 32632, 34323, 36062, + 37829, 39466, 41144, 42654, 43981, 45343, 46579, 47759, 49013, 50171, + 51249, 52283, 53245, 54148, 54938, 55669, 56421, 57109, 57791, 58464, + 59092, 59674, 60105, 60653, 61083, 61407, 61757, 62095, 62388, 62649, + 62873, 63157, 63358, 63540, 63725, 63884, 64046, 64155, 64278, 64426, + 64548, 64654, 64806, 64906, 64994, 65077, 65137, 65215, 65277, 65324, + 65354, 65409, 65437, 65455, 65462, 65490, 65495, 65499, 65508, 65511, + 65513, 65515, 65517, 65519, 65521, 65523, 65525, 65527, 65529, 65531, + 65533, 65535}; + +const WebRtc_UWord16 WebRtcIsac_kQKltCdfShape[2059] = { + 0, 65535, 0, 65535, 0, 65535, 0, 65535, 0, 65535, + 0, 65535, 0, 65535, 0, 65535, 0, 65535, 0, 4, + 65535, 0, 8, 65514, 65535, 0, 29, 65481, 65535, 0, + 121, 65439, 65535, 0, 239, 65284, 65535, 0, 8, 779, + 64999, 65527, 65535, 0, 8, 888, 64693, 65522, 65535, 0, + 29, 2604, 62843, 65497, 65531, 65535, 0, 25, 176, 4576, + 61164, 65275, 65527, 65535, 0, 65535, 0, 65535, 0, 65535, + 0, 65535, 0, 4, 65535, 0, 65535, 0, 65535, 0, + 65535, 0, 65535, 0, 4, 65535, 0, 33, 65502, 65535, + 0, 54, 65481, 65535, 0, 251, 65309, 65535, 0, 611, + 65074, 65535, 0, 1273, 64292, 65527, 65535, 0, 4, 1809, + 63940, 65518, 65535, 0, 88, 4392, 60603, 65426, 65531, 65535, + 0, 25, 419, 7046, 57756, 64961, 65514, 65531, 65535, 0, + 65535, 0, 65535, 0, 65535, 0, 65535, 0, 4, 65531, + 65535, 0, 65535, 0, 8, 65531, 65535, 0, 4, 65527, + 65535, 0, 17, 65510, 65535, 0, 42, 65481, 65535, 0, + 197, 65342, 65531, 65535, 0, 385, 65154, 65535, 0, 1005, + 64522, 65535, 0, 8, 1985, 63469, 65533, 65535, 0, 38, + 3119, 61884, 65514, 65535, 0, 4, 6, 67, 4961, 60804, + 65472, 65535, 0, 17, 565, 9182, 56538, 65087, 65514, 65535, + 0, 8, 63, 327, 2118, 14490, 52774, 63839, 65376, 65522, + 65535, 0, 65535, 0, 65535, 0, 65535, 0, 65535, 0, + 17, 65522, 65535, 0, 59, 65489, 65535, 0, 50, 65522, + 65535, 0, 54, 65489, 65535, 0, 310, 65179, 65535, 0, + 615, 64836, 65535, 0, 4, 1503, 63965, 65535, 0, 2780, + 63383, 65535, 0, 21, 3919, 61051, 65527, 65535, 0, 84, + 6674, 59929, 65435, 65535, 0, 4, 255, 7976, 55784, 65150, + 65518, 65531, 65535, 0, 4, 8, 582, 10726, 53465, 64949, + 65518, 65535, 0, 29, 339, 3006, 17555, 49517, 62956, 65200, + 65497, 65531, 65535, 0, 2, 33, 138, 565, 2324, 7670, + 22089, 45966, 58949, 63479, 64966, 65380, 65518, 65535, 0, 65535, + 0, 65535, 0, 2, 65533, 65535, 0, 46, 65514, 65535, + 0, 414, 65091, 65535, 0, 540, 64911, 65535, 0, 419, + 65162, 65535, 0, 976, 64790, 65535, 0, 2977, 62495, 65531, + 65535, 0, 4, 3852, 61034, 65527, 65535, 0, 4, 29, + 6021, 60243, 65468, 65535, 0, 84, 6711, 58066, 65418, 65535, + 0, 13, 281, 9550, 54917, 65125, 65506, 65535, 0, 2, + 63, 984, 12108, 52644, 64342, 65435, 65527, 65535, 0, 29, + 251, 2014, 14871, 47553, 62881, 65229, 65518, 65535, 0, 13, + 142, 749, 4220, 18497, 45200, 60913, 64823, 65426, 65527, 65535, + 0, 13, 71, 264, 1176, 3789, 10500, 24480, 43488, 56324, + 62315, 64493, 65242, 65464, 65514, 65522, 65531, 65535, 0, 4, + 13, 38, 109, 205, 448, 850, 1708, 3429, 6276, 11371, + 19221, 29734, 40955, 49391, 55411, 59460, 62102, 63793, 64656, 65150, + 65401, 65485, 65522, 65531, 65535, 0, 65535, 0, 2, 65533, + 65535, 0, 1160, 65476, 65535, 0, 2, 6640, 64763, 65533, + 65535, 0, 2, 38, 9923, 61009, 65527, 65535, 0, 2, + 4949, 63092, 65533, 65535, 0, 2, 3090, 63398, 65533, 65535, + 0, 2, 2520, 58744, 65510, 65535, 0, 2, 13, 544, + 8784, 51403, 65148, 65533, 65535, 0, 2, 25, 1017, 10412, + 43550, 63651, 65489, 65527, 65535, 0, 2, 4, 29, 783, + 13377, 52462, 64524, 65495, 65533, 65535, 0, 2, 4, 6, + 100, 1817, 18451, 52590, 63559, 65376, 65531, 65535, 0, 2, + 4, 6, 46, 385, 2562, 11225, 37416, 60488, 65026, 65487, + 65529, 65533, 65535, 0, 2, 4, 6, 8, 10, 12, + 42, 222, 971, 5221, 19811, 45048, 60312, 64486, 65294, 65474, + 65525, 65529, 65533, 65535, 0, 2, 4, 8, 71, 167, + 666, 2533, 7875, 19622, 38082, 54359, 62108, 64633, 65290, 65495, + 65529, 65533, 65535, 0, 2, 4, 6, 8, 10, 13, + 109, 586, 1930, 4949, 11600, 22641, 36125, 48312, 56899, 61495, + 63927, 64932, 65389, 65489, 65518, 65531, 65533, 65535, 0, 4, + 6, 8, 67, 209, 712, 1838, 4195, 8432, 14432, 22834, + 31723, 40523, 48139, 53929, 57865, 60657, 62403, 63584, 64363, 64907, + 65167, 65372, 65472, 65514, 65535, 0, 2, 4, 13, 25, + 42, 46, 50, 75, 113, 147, 281, 448, 657, 909, + 1185, 1591, 1976, 2600, 3676, 5317, 7398, 9914, 12941, 16169, + 19477, 22885, 26464, 29851, 33360, 37228, 41139, 44802, 48654, 52058, + 55181, 57676, 59581, 61022, 62190, 63107, 63676, 64199, 64547, 64924, + 65158, 65313, 65430, 65481, 65518, 65535, 0, 65535, 0, 65535, + 0, 65535, 0, 65535, 0, 65533, 65535, 0, 65535, 0, + 65535, 0, 65535, 0, 65533, 65535, 0, 2, 65535, 0, + 2, 65533, 65535, 0, 2, 65533, 65535, 0, 2, 65533, + 65535, 0, 2, 4, 65533, 65535, 0, 2, 65533, 65535, + 0, 2, 4, 65531, 65533, 65535, 0, 2, 4, 65531, + 65533, 65535, 0, 2, 4, 6, 65524, 65533, 65535, 0, + 65535, 0, 65535, 0, 65535, 0, 65535, 0, 65535, 0, + 65535, 0, 65535, 0, 65535, 0, 65533, 65535, 0, 65533, + 65535, 0, 2, 65533, 65535, 0, 2, 65533, 65535, 0, + 2, 65533, 65535, 0, 2, 4, 65532, 65535, 0, 6, + 65523, 65535, 0, 2, 15, 65530, 65533, 65535, 0, 2, + 35, 65493, 65531, 65533, 65535, 0, 2, 4, 158, 65382, + 65531, 65533, 65535, 0, 65535, 0, 65535, 0, 65535, 0, + 65535, 0, 65535, 0, 65535, 0, 2, 65535, 0, 2, + 65533, 65535, 0, 2, 65533, 65535, 0, 2, 65533, 65535, + 0, 2, 65533, 65535, 0, 9, 65512, 65535, 0, 2, + 12, 65529, 65535, 0, 2, 73, 65434, 65533, 65535, 0, + 2, 240, 65343, 65533, 65535, 0, 2, 476, 65017, 65531, + 65533, 65535, 0, 2, 4, 1046, 64686, 65531, 65533, 65535, + 0, 2, 4, 6, 8, 1870, 63898, 65529, 65531, 65533, + 65535, 0, 65535, 0, 65535, 0, 65535, 0, 65533, 65535, + 0, 2, 65533, 65535, 0, 2, 65533, 65535, 0, 2, + 65532, 65535, 0, 6, 65533, 65535, 0, 6, 65523, 65535, + 0, 2, 65532, 65535, 0, 137, 65439, 65535, 0, 576, + 64899, 65533, 65535, 0, 2, 289, 65299, 65533, 65535, 0, + 2, 4, 6, 880, 64134, 65531, 65533, 65535, 0, 2, + 4, 1853, 63347, 65533, 65535, 0, 2, 6, 2516, 61762, + 65529, 65531, 65533, 65535, 0, 2, 4, 9, 3980, 61380, + 65503, 65529, 65531, 65533, 65535, 0, 2, 4, 6, 8, + 10, 12, 61, 6393, 59859, 65466, 65527, 65529, 65531, 65533, + 65535, 0, 65535, 0, 65535, 0, 65535, 0, 2, 65532, + 65535, 0, 3, 65529, 65535, 0, 2, 65529, 65535, 0, + 61, 65453, 65535, 0, 234, 65313, 65535, 0, 503, 65138, + 65535, 0, 155, 65402, 65533, 65535, 0, 2, 1058, 64554, + 65533, 65535, 0, 2, 4, 3138, 62109, 65531, 65533, 65535, + 0, 2, 4, 2031, 63339, 65531, 65533, 65535, 0, 2, + 4, 6, 9, 4155, 60778, 65523, 65529, 65531, 65533, 65535, + 0, 2, 4, 41, 6189, 59269, 65490, 65531, 65533, 65535, + 0, 2, 4, 6, 210, 8789, 57043, 65400, 65528, 65531, + 65533, 65535, 0, 2, 4, 6, 8, 26, 453, 10086, + 55499, 64948, 65483, 65524, 65527, 65529, 65531, 65533, 65535, 0, + 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, + 114, 1014, 11202, 52670, 64226, 65356, 65503, 65514, 65523, 65525, + 65527, 65529, 65531, 65533, 65535, 0, 65533, 65535, 0, 15, + 65301, 65535, 0, 152, 64807, 65535, 0, 2, 3328, 63308, + 65535, 0, 2, 4050, 59730, 65533, 65535, 0, 2, 164, + 10564, 61894, 65529, 65535, 0, 15, 6712, 59831, 65076, 65532, + 65535, 0, 32, 7712, 57449, 65459, 65535, 0, 2, 210, + 7849, 53110, 65021, 65523, 65535, 0, 2, 12, 1081, 13883, + 48262, 62870, 65477, 65535, 0, 2, 88, 847, 6145, 37852, + 62012, 65454, 65533, 65535, 0, 9, 47, 207, 1823, 14522, + 45521, 61069, 64891, 65481, 65528, 65531, 65533, 65535, 0, 2, + 9, 488, 2881, 12758, 38703, 58412, 64420, 65410, 65533, 65535, + 0, 2, 4, 6, 61, 333, 1891, 6486, 19720, 43188, + 57547, 62472, 64796, 65421, 65497, 65523, 65529, 65531, 65533, 65535, + 0, 2, 4, 6, 8, 10, 12, 29, 117, 447, + 1528, 6138, 21242, 43133, 56495, 62432, 64746, 65362, 65500, 65529, + 65531, 65533, 65535, 0, 2, 18, 105, 301, 760, 1490, + 3472, 7568, 15002, 26424, 40330, 53029, 60048, 62964, 64274, 64890, + 65337, 65445, 65489, 65513, 65527, 65530, 65533, 65535, 0, 2, + 4, 6, 41, 102, 409, 853, 2031, 4316, 7302, 11328, + 16869, 24825, 34926, 43481, 50877, 56126, 59874, 62103, 63281, 63857, + 64166, 64675, 65382, 65522, 65531, 65533, 65535, 0, 2, 4, + 6, 8, 10, 12, 14, 16, 18, 29, 38, 53, + 58, 96, 181, 503, 1183, 2849, 5590, 8600, 11379, 13942, + 16478, 19453, 22638, 26039, 29411, 32921, 37596, 41433, 44998, 48560, + 51979, 55106, 57666, 59892, 61485, 62616, 63484, 64018, 64375, 64685, + 64924, 65076, 65278, 65395, 65471, 65509, 65529, 65535, 0, 65535, + 0, 65535, 0, 65535, 0, 65535, 0, 65535, 0, 65535, + 0, 65535, 0, 65535, 0, 2, 65533, 65535, 0, 2, + 65533, 65535, 0, 2, 65533, 65535, 0, 2, 65533, 65535, + 0, 2, 65533, 65535, 0, 2, 65533, 65535, 0, 7, + 65519, 65535, 0, 2, 14, 65491, 65533, 65535, 0, 2, + 81, 65427, 65531, 65533, 65535, 0, 2, 4, 312, 65293, + 65528, 65533, 65535, 0, 65535, 0, 65535, 0, 65535, 0, + 65535, 0, 65535, 0, 65535, 0, 65535, 0, 65535, 0, + 2, 65533, 65535, 0, 2, 65533, 65535, 0, 2, 65533, + 65535, 0, 5, 65523, 65535, 0, 2, 65533, 65535, 0, + 7, 65526, 65535, 0, 46, 65464, 65533, 65535, 0, 2, + 120, 65309, 65533, 65535, 0, 2, 5, 362, 65097, 65533, + 65535, 0, 2, 18, 1164, 64785, 65528, 65531, 65533, 65535, + 0, 65535, 0, 65535, 0, 65535, 0, 65533, 65535, 0, + 65535, 0, 65533, 65535, 0, 2, 65533, 65535, 0, 2, + 65533, 65535, 0, 2, 65533, 65535, 0, 2, 65530, 65535, + 0, 2, 65523, 65535, 0, 69, 65477, 65535, 0, 141, + 65459, 65535, 0, 194, 65325, 65533, 65535, 0, 2, 543, + 64912, 65533, 65535, 0, 5, 1270, 64301, 65529, 65531, 65533, + 65535, 0, 2, 4, 12, 2055, 63538, 65508, 65531, 65533, + 65535, 0, 2, 7, 102, 3775, 61970, 65429, 65526, 65528, + 65533, 65535, 0, 65535, 0, 65535, 0, 65535, 0, 2, + 65533, 65535, 0, 2, 65535, 0, 9, 65533, 65535, 0, + 25, 65512, 65535, 0, 2, 65533, 65535, 0, 44, 65480, + 65535, 0, 48, 65475, 65535, 0, 162, 65373, 65535, 0, + 637, 64806, 65533, 65535, 0, 2, 935, 64445, 65533, 65535, + 0, 2, 4, 1662, 64083, 65533, 65535, 0, 2, 12, + 3036, 62469, 65521, 65533, 65535, 0, 2, 120, 5405, 60468, + 65469, 65531, 65533, 65535, 0, 2, 4, 18, 254, 6663, + 58999, 65272, 65528, 65533, 65535, 0, 2, 4, 9, 12, + 67, 591, 8981, 56781, 64564, 65365, 65508, 65524, 65526, 65529, + 65531, 65533, 65535, 0, 65535, 0, 65535, 0, 2, 65533, + 65535, 0, 9, 65526, 65535, 0, 14, 65503, 65535, 0, + 127, 65390, 65535, 0, 517, 64990, 65535, 0, 178, 65330, + 65535, 0, 2, 1055, 64533, 65533, 65535, 0, 2, 1558, + 63942, 65533, 65535, 0, 2, 2205, 63173, 65533, 65535, 0, + 25, 4493, 60862, 65505, 65533, 65535, 0, 2, 48, 5890, + 59442, 65482, 65533, 65535, 0, 2, 4, 127, 7532, 58191, + 65394, 65533, 65535, 0, 2, 5, 32, 550, 10388, 54924, + 65046, 65510, 65531, 65533, 65535, 0, 2, 4, 30, 150, + 1685, 14340, 51375, 63619, 65288, 65503, 65528, 65533, 65535, 0, + 2, 4, 6, 8, 28, 97, 473, 2692, 15407, 50020, + 62880, 65064, 65445, 65508, 65531, 65533, 65535, 0, 2, 4, + 12, 32, 79, 150, 372, 907, 2184, 5868, 18207, 45431, + 59856, 64031, 65096, 65401, 65481, 65507, 65521, 65523, 65525, 65527, + 65529, 65531, 65533, 65535, 0, 65533, 65535, 0, 182, 65491, + 65535, 0, 877, 64286, 65535, 0, 9, 2708, 63612, 65533, + 65535, 0, 2, 6038, 59532, 65535, 0, 2, 92, 5500, + 60539, 65533, 65535, 0, 268, 8908, 56512, 65385, 65535, 0, + 129, 13110, 52742, 65036, 65535, 0, 2, 806, 14003, 51929, + 64732, 65523, 65535, 0, 7, 92, 2667, 18159, 47678, 62610, + 65355, 65535, 0, 32, 1836, 19676, 48237, 61677, 64960, 65526, + 65535, 0, 21, 159, 967, 5668, 22782, 44709, 58317, 64020, + 65406, 65528, 65535, 0, 7, 162, 1838, 8328, 23929, 43014, + 56394, 63374, 65216, 65484, 65521, 65535, 0, 2, 4, 6, + 28, 268, 1120, 3613, 10688, 24185, 40989, 54917, 61684, 64510, + 65403, 65530, 65535, 0, 2, 16, 44, 139, 492, 1739, + 5313, 13558, 26766, 41566, 52446, 58937, 62815, 64480, 65201, 65454, + 65524, 65533, 65535, 0, 7, 25, 76, 263, 612, 1466, + 3325, 6832, 12366, 20152, 29466, 39255, 47360, 53506, 57740, 60726, + 62845, 64131, 64882, 65260, 65459, 65521, 65528, 65530, 65535, 0, + 2, 4, 14, 48, 136, 312, 653, 1240, 2369, 4327, + 7028, 10759, 15449, 21235, 28027, 35386, 42938, 49562, 54990, 59119, + 62086, 63916, 64863, 65249, 65445, 65493, 65523, 65535, 0, 2, + 4, 6, 8, 10, 12, 21, 83, 208, 409, 723, + 1152, 1868, 2951, 4463, 6460, 8979, 11831, 15195, 18863, 22657, + 26762, 30881, 34963, 39098, 43054, 47069, 50620, 53871, 56821, 59386, + 61340, 62670, 63512, 64023, 64429, 64750, 64944, 65126, 65279, 65366, + 65413, 65445, 65473, 65505, 65510, 65521, 65528, 65530, 65535}; + +/* pointers to cdf tables for quantizer indices */ +const WebRtc_UWord16 *WebRtcIsac_kQKltCdfPtrGain[3][12] = { +{WebRtcIsac_kQKltCdfGain +0 +0, WebRtcIsac_kQKltCdfGain +0 +8, WebRtcIsac_kQKltCdfGain +0 +22, WebRtcIsac_kQKltCdfGain +0 +32, WebRtcIsac_kQKltCdfGain +0 +48, WebRtcIsac_kQKltCdfGain +0 +60, WebRtcIsac_kQKltCdfGain +0 +81, WebRtcIsac_kQKltCdfGain +0 +95, WebRtcIsac_kQKltCdfGain +0 +128, WebRtcIsac_kQKltCdfGain +0 +152, +WebRtcIsac_kQKltCdfGain +0 +210, WebRtcIsac_kQKltCdfGain +0 +264}, +{WebRtcIsac_kQKltCdfGain +404 +0, WebRtcIsac_kQKltCdfGain +404 +8, WebRtcIsac_kQKltCdfGain +404 +21, WebRtcIsac_kQKltCdfGain +404 +30, WebRtcIsac_kQKltCdfGain +404 +46, WebRtcIsac_kQKltCdfGain +404 +58, WebRtcIsac_kQKltCdfGain +404 +79, WebRtcIsac_kQKltCdfGain +404 +93, WebRtcIsac_kQKltCdfGain +404 +125, WebRtcIsac_kQKltCdfGain +404 +149, +WebRtcIsac_kQKltCdfGain +404 +207, WebRtcIsac_kQKltCdfGain +404 +260}, +{WebRtcIsac_kQKltCdfGain +803 +0, WebRtcIsac_kQKltCdfGain +803 +8, WebRtcIsac_kQKltCdfGain +803 +22, WebRtcIsac_kQKltCdfGain +803 +31, WebRtcIsac_kQKltCdfGain +803 +48, WebRtcIsac_kQKltCdfGain +803 +60, WebRtcIsac_kQKltCdfGain +803 +81, WebRtcIsac_kQKltCdfGain +803 +96, WebRtcIsac_kQKltCdfGain +803 +129, WebRtcIsac_kQKltCdfGain +803 +154, +WebRtcIsac_kQKltCdfGain +803 +212, WebRtcIsac_kQKltCdfGain +803 +268}}; + +const WebRtc_UWord16 *WebRtcIsac_kQKltCdfPtrShape[3][108] = { +{WebRtcIsac_kQKltCdfShape +0 +0, WebRtcIsac_kQKltCdfShape +0 +2, WebRtcIsac_kQKltCdfShape +0 +4, WebRtcIsac_kQKltCdfShape +0 +6, WebRtcIsac_kQKltCdfShape +0 +8, WebRtcIsac_kQKltCdfShape +0 +10, WebRtcIsac_kQKltCdfShape +0 +12, WebRtcIsac_kQKltCdfShape +0 +14, WebRtcIsac_kQKltCdfShape +0 +16, WebRtcIsac_kQKltCdfShape +0 +18, +WebRtcIsac_kQKltCdfShape +0 +21, WebRtcIsac_kQKltCdfShape +0 +25, WebRtcIsac_kQKltCdfShape +0 +29, WebRtcIsac_kQKltCdfShape +0 +33, WebRtcIsac_kQKltCdfShape +0 +37, WebRtcIsac_kQKltCdfShape +0 +43, WebRtcIsac_kQKltCdfShape +0 +49, WebRtcIsac_kQKltCdfShape +0 +56, WebRtcIsac_kQKltCdfShape +0 +64, WebRtcIsac_kQKltCdfShape +0 +66, +WebRtcIsac_kQKltCdfShape +0 +68, WebRtcIsac_kQKltCdfShape +0 +70, WebRtcIsac_kQKltCdfShape +0 +72, WebRtcIsac_kQKltCdfShape +0 +75, WebRtcIsac_kQKltCdfShape +0 +77, WebRtcIsac_kQKltCdfShape +0 +79, WebRtcIsac_kQKltCdfShape +0 +81, WebRtcIsac_kQKltCdfShape +0 +83, WebRtcIsac_kQKltCdfShape +0 +86, WebRtcIsac_kQKltCdfShape +0 +90, +WebRtcIsac_kQKltCdfShape +0 +94, WebRtcIsac_kQKltCdfShape +0 +98, WebRtcIsac_kQKltCdfShape +0 +102, WebRtcIsac_kQKltCdfShape +0 +107, WebRtcIsac_kQKltCdfShape +0 +113, WebRtcIsac_kQKltCdfShape +0 +120, WebRtcIsac_kQKltCdfShape +0 +129, WebRtcIsac_kQKltCdfShape +0 +131, WebRtcIsac_kQKltCdfShape +0 +133, WebRtcIsac_kQKltCdfShape +0 +135, +WebRtcIsac_kQKltCdfShape +0 +137, WebRtcIsac_kQKltCdfShape +0 +141, WebRtcIsac_kQKltCdfShape +0 +143, WebRtcIsac_kQKltCdfShape +0 +147, WebRtcIsac_kQKltCdfShape +0 +151, WebRtcIsac_kQKltCdfShape +0 +155, WebRtcIsac_kQKltCdfShape +0 +159, WebRtcIsac_kQKltCdfShape +0 +164, WebRtcIsac_kQKltCdfShape +0 +168, WebRtcIsac_kQKltCdfShape +0 +172, +WebRtcIsac_kQKltCdfShape +0 +178, WebRtcIsac_kQKltCdfShape +0 +184, WebRtcIsac_kQKltCdfShape +0 +192, WebRtcIsac_kQKltCdfShape +0 +200, WebRtcIsac_kQKltCdfShape +0 +211, WebRtcIsac_kQKltCdfShape +0 +213, WebRtcIsac_kQKltCdfShape +0 +215, WebRtcIsac_kQKltCdfShape +0 +217, WebRtcIsac_kQKltCdfShape +0 +219, WebRtcIsac_kQKltCdfShape +0 +223, +WebRtcIsac_kQKltCdfShape +0 +227, WebRtcIsac_kQKltCdfShape +0 +231, WebRtcIsac_kQKltCdfShape +0 +235, WebRtcIsac_kQKltCdfShape +0 +239, WebRtcIsac_kQKltCdfShape +0 +243, WebRtcIsac_kQKltCdfShape +0 +248, WebRtcIsac_kQKltCdfShape +0 +252, WebRtcIsac_kQKltCdfShape +0 +258, WebRtcIsac_kQKltCdfShape +0 +264, WebRtcIsac_kQKltCdfShape +0 +273, +WebRtcIsac_kQKltCdfShape +0 +282, WebRtcIsac_kQKltCdfShape +0 +293, WebRtcIsac_kQKltCdfShape +0 +308, WebRtcIsac_kQKltCdfShape +0 +310, WebRtcIsac_kQKltCdfShape +0 +312, WebRtcIsac_kQKltCdfShape +0 +316, WebRtcIsac_kQKltCdfShape +0 +320, WebRtcIsac_kQKltCdfShape +0 +324, WebRtcIsac_kQKltCdfShape +0 +328, WebRtcIsac_kQKltCdfShape +0 +332, +WebRtcIsac_kQKltCdfShape +0 +336, WebRtcIsac_kQKltCdfShape +0 +341, WebRtcIsac_kQKltCdfShape +0 +347, WebRtcIsac_kQKltCdfShape +0 +354, WebRtcIsac_kQKltCdfShape +0 +360, WebRtcIsac_kQKltCdfShape +0 +368, WebRtcIsac_kQKltCdfShape +0 +378, WebRtcIsac_kQKltCdfShape +0 +388, WebRtcIsac_kQKltCdfShape +0 +400, WebRtcIsac_kQKltCdfShape +0 +418, +WebRtcIsac_kQKltCdfShape +0 +445, WebRtcIsac_kQKltCdfShape +0 +447, WebRtcIsac_kQKltCdfShape +0 +451, WebRtcIsac_kQKltCdfShape +0 +455, WebRtcIsac_kQKltCdfShape +0 +461, WebRtcIsac_kQKltCdfShape +0 +468, WebRtcIsac_kQKltCdfShape +0 +474, WebRtcIsac_kQKltCdfShape +0 +480, WebRtcIsac_kQKltCdfShape +0 +486, WebRtcIsac_kQKltCdfShape +0 +495, +WebRtcIsac_kQKltCdfShape +0 +505, WebRtcIsac_kQKltCdfShape +0 +516, WebRtcIsac_kQKltCdfShape +0 +528, WebRtcIsac_kQKltCdfShape +0 +543, WebRtcIsac_kQKltCdfShape +0 +564, WebRtcIsac_kQKltCdfShape +0 +583, WebRtcIsac_kQKltCdfShape +0 +608, WebRtcIsac_kQKltCdfShape +0 +635}, +{WebRtcIsac_kQKltCdfShape +686 +0, WebRtcIsac_kQKltCdfShape +686 +2, WebRtcIsac_kQKltCdfShape +686 +4, WebRtcIsac_kQKltCdfShape +686 +6, WebRtcIsac_kQKltCdfShape +686 +8, WebRtcIsac_kQKltCdfShape +686 +11, WebRtcIsac_kQKltCdfShape +686 +13, WebRtcIsac_kQKltCdfShape +686 +15, WebRtcIsac_kQKltCdfShape +686 +17, WebRtcIsac_kQKltCdfShape +686 +20, +WebRtcIsac_kQKltCdfShape +686 +23, WebRtcIsac_kQKltCdfShape +686 +27, WebRtcIsac_kQKltCdfShape +686 +31, WebRtcIsac_kQKltCdfShape +686 +35, WebRtcIsac_kQKltCdfShape +686 +40, WebRtcIsac_kQKltCdfShape +686 +44, WebRtcIsac_kQKltCdfShape +686 +50, WebRtcIsac_kQKltCdfShape +686 +56, WebRtcIsac_kQKltCdfShape +686 +63, WebRtcIsac_kQKltCdfShape +686 +65, +WebRtcIsac_kQKltCdfShape +686 +67, WebRtcIsac_kQKltCdfShape +686 +69, WebRtcIsac_kQKltCdfShape +686 +71, WebRtcIsac_kQKltCdfShape +686 +73, WebRtcIsac_kQKltCdfShape +686 +75, WebRtcIsac_kQKltCdfShape +686 +77, WebRtcIsac_kQKltCdfShape +686 +79, WebRtcIsac_kQKltCdfShape +686 +82, WebRtcIsac_kQKltCdfShape +686 +85, WebRtcIsac_kQKltCdfShape +686 +89, +WebRtcIsac_kQKltCdfShape +686 +93, WebRtcIsac_kQKltCdfShape +686 +97, WebRtcIsac_kQKltCdfShape +686 +102, WebRtcIsac_kQKltCdfShape +686 +106, WebRtcIsac_kQKltCdfShape +686 +112, WebRtcIsac_kQKltCdfShape +686 +119, WebRtcIsac_kQKltCdfShape +686 +127, WebRtcIsac_kQKltCdfShape +686 +129, WebRtcIsac_kQKltCdfShape +686 +131, WebRtcIsac_kQKltCdfShape +686 +133, +WebRtcIsac_kQKltCdfShape +686 +135, WebRtcIsac_kQKltCdfShape +686 +137, WebRtcIsac_kQKltCdfShape +686 +139, WebRtcIsac_kQKltCdfShape +686 +142, WebRtcIsac_kQKltCdfShape +686 +146, WebRtcIsac_kQKltCdfShape +686 +150, WebRtcIsac_kQKltCdfShape +686 +154, WebRtcIsac_kQKltCdfShape +686 +158, WebRtcIsac_kQKltCdfShape +686 +162, WebRtcIsac_kQKltCdfShape +686 +167, +WebRtcIsac_kQKltCdfShape +686 +173, WebRtcIsac_kQKltCdfShape +686 +179, WebRtcIsac_kQKltCdfShape +686 +186, WebRtcIsac_kQKltCdfShape +686 +194, WebRtcIsac_kQKltCdfShape +686 +205, WebRtcIsac_kQKltCdfShape +686 +207, WebRtcIsac_kQKltCdfShape +686 +209, WebRtcIsac_kQKltCdfShape +686 +211, WebRtcIsac_kQKltCdfShape +686 +214, WebRtcIsac_kQKltCdfShape +686 +218, +WebRtcIsac_kQKltCdfShape +686 +222, WebRtcIsac_kQKltCdfShape +686 +226, WebRtcIsac_kQKltCdfShape +686 +230, WebRtcIsac_kQKltCdfShape +686 +234, WebRtcIsac_kQKltCdfShape +686 +238, WebRtcIsac_kQKltCdfShape +686 +242, WebRtcIsac_kQKltCdfShape +686 +247, WebRtcIsac_kQKltCdfShape +686 +253, WebRtcIsac_kQKltCdfShape +686 +262, WebRtcIsac_kQKltCdfShape +686 +269, +WebRtcIsac_kQKltCdfShape +686 +278, WebRtcIsac_kQKltCdfShape +686 +289, WebRtcIsac_kQKltCdfShape +686 +305, WebRtcIsac_kQKltCdfShape +686 +307, WebRtcIsac_kQKltCdfShape +686 +309, WebRtcIsac_kQKltCdfShape +686 +311, WebRtcIsac_kQKltCdfShape +686 +315, WebRtcIsac_kQKltCdfShape +686 +319, WebRtcIsac_kQKltCdfShape +686 +323, WebRtcIsac_kQKltCdfShape +686 +327, +WebRtcIsac_kQKltCdfShape +686 +331, WebRtcIsac_kQKltCdfShape +686 +335, WebRtcIsac_kQKltCdfShape +686 +340, WebRtcIsac_kQKltCdfShape +686 +346, WebRtcIsac_kQKltCdfShape +686 +354, WebRtcIsac_kQKltCdfShape +686 +362, WebRtcIsac_kQKltCdfShape +686 +374, WebRtcIsac_kQKltCdfShape +686 +384, WebRtcIsac_kQKltCdfShape +686 +396, WebRtcIsac_kQKltCdfShape +686 +413, +WebRtcIsac_kQKltCdfShape +686 +439, WebRtcIsac_kQKltCdfShape +686 +442, WebRtcIsac_kQKltCdfShape +686 +446, WebRtcIsac_kQKltCdfShape +686 +450, WebRtcIsac_kQKltCdfShape +686 +455, WebRtcIsac_kQKltCdfShape +686 +461, WebRtcIsac_kQKltCdfShape +686 +468, WebRtcIsac_kQKltCdfShape +686 +475, WebRtcIsac_kQKltCdfShape +686 +481, WebRtcIsac_kQKltCdfShape +686 +489, +WebRtcIsac_kQKltCdfShape +686 +498, WebRtcIsac_kQKltCdfShape +686 +508, WebRtcIsac_kQKltCdfShape +686 +522, WebRtcIsac_kQKltCdfShape +686 +534, WebRtcIsac_kQKltCdfShape +686 +554, WebRtcIsac_kQKltCdfShape +686 +577, WebRtcIsac_kQKltCdfShape +686 +602, WebRtcIsac_kQKltCdfShape +686 +631}, +{WebRtcIsac_kQKltCdfShape +1368 +0, WebRtcIsac_kQKltCdfShape +1368 +2, WebRtcIsac_kQKltCdfShape +1368 +4, WebRtcIsac_kQKltCdfShape +1368 +6, WebRtcIsac_kQKltCdfShape +1368 +8, WebRtcIsac_kQKltCdfShape +1368 +10, WebRtcIsac_kQKltCdfShape +1368 +12, WebRtcIsac_kQKltCdfShape +1368 +14, WebRtcIsac_kQKltCdfShape +1368 +16, WebRtcIsac_kQKltCdfShape +1368 +20, +WebRtcIsac_kQKltCdfShape +1368 +24, WebRtcIsac_kQKltCdfShape +1368 +28, WebRtcIsac_kQKltCdfShape +1368 +32, WebRtcIsac_kQKltCdfShape +1368 +36, WebRtcIsac_kQKltCdfShape +1368 +40, WebRtcIsac_kQKltCdfShape +1368 +44, WebRtcIsac_kQKltCdfShape +1368 +50, WebRtcIsac_kQKltCdfShape +1368 +57, WebRtcIsac_kQKltCdfShape +1368 +65, WebRtcIsac_kQKltCdfShape +1368 +67, +WebRtcIsac_kQKltCdfShape +1368 +69, WebRtcIsac_kQKltCdfShape +1368 +71, WebRtcIsac_kQKltCdfShape +1368 +73, WebRtcIsac_kQKltCdfShape +1368 +75, WebRtcIsac_kQKltCdfShape +1368 +77, WebRtcIsac_kQKltCdfShape +1368 +79, WebRtcIsac_kQKltCdfShape +1368 +81, WebRtcIsac_kQKltCdfShape +1368 +85, WebRtcIsac_kQKltCdfShape +1368 +89, WebRtcIsac_kQKltCdfShape +1368 +93, +WebRtcIsac_kQKltCdfShape +1368 +97, WebRtcIsac_kQKltCdfShape +1368 +101, WebRtcIsac_kQKltCdfShape +1368 +105, WebRtcIsac_kQKltCdfShape +1368 +110, WebRtcIsac_kQKltCdfShape +1368 +116, WebRtcIsac_kQKltCdfShape +1368 +123, WebRtcIsac_kQKltCdfShape +1368 +132, WebRtcIsac_kQKltCdfShape +1368 +134, WebRtcIsac_kQKltCdfShape +1368 +136, WebRtcIsac_kQKltCdfShape +1368 +138, +WebRtcIsac_kQKltCdfShape +1368 +141, WebRtcIsac_kQKltCdfShape +1368 +143, WebRtcIsac_kQKltCdfShape +1368 +146, WebRtcIsac_kQKltCdfShape +1368 +150, WebRtcIsac_kQKltCdfShape +1368 +154, WebRtcIsac_kQKltCdfShape +1368 +158, WebRtcIsac_kQKltCdfShape +1368 +162, WebRtcIsac_kQKltCdfShape +1368 +166, WebRtcIsac_kQKltCdfShape +1368 +170, WebRtcIsac_kQKltCdfShape +1368 +174, +WebRtcIsac_kQKltCdfShape +1368 +179, WebRtcIsac_kQKltCdfShape +1368 +185, WebRtcIsac_kQKltCdfShape +1368 +193, WebRtcIsac_kQKltCdfShape +1368 +203, WebRtcIsac_kQKltCdfShape +1368 +214, WebRtcIsac_kQKltCdfShape +1368 +216, WebRtcIsac_kQKltCdfShape +1368 +218, WebRtcIsac_kQKltCdfShape +1368 +220, WebRtcIsac_kQKltCdfShape +1368 +224, WebRtcIsac_kQKltCdfShape +1368 +227, +WebRtcIsac_kQKltCdfShape +1368 +231, WebRtcIsac_kQKltCdfShape +1368 +235, WebRtcIsac_kQKltCdfShape +1368 +239, WebRtcIsac_kQKltCdfShape +1368 +243, WebRtcIsac_kQKltCdfShape +1368 +247, WebRtcIsac_kQKltCdfShape +1368 +251, WebRtcIsac_kQKltCdfShape +1368 +256, WebRtcIsac_kQKltCdfShape +1368 +262, WebRtcIsac_kQKltCdfShape +1368 +269, WebRtcIsac_kQKltCdfShape +1368 +277, +WebRtcIsac_kQKltCdfShape +1368 +286, WebRtcIsac_kQKltCdfShape +1368 +297, WebRtcIsac_kQKltCdfShape +1368 +315, WebRtcIsac_kQKltCdfShape +1368 +317, WebRtcIsac_kQKltCdfShape +1368 +319, WebRtcIsac_kQKltCdfShape +1368 +323, WebRtcIsac_kQKltCdfShape +1368 +327, WebRtcIsac_kQKltCdfShape +1368 +331, WebRtcIsac_kQKltCdfShape +1368 +335, WebRtcIsac_kQKltCdfShape +1368 +339, +WebRtcIsac_kQKltCdfShape +1368 +343, WebRtcIsac_kQKltCdfShape +1368 +349, WebRtcIsac_kQKltCdfShape +1368 +355, WebRtcIsac_kQKltCdfShape +1368 +361, WebRtcIsac_kQKltCdfShape +1368 +368, WebRtcIsac_kQKltCdfShape +1368 +376, WebRtcIsac_kQKltCdfShape +1368 +385, WebRtcIsac_kQKltCdfShape +1368 +397, WebRtcIsac_kQKltCdfShape +1368 +411, WebRtcIsac_kQKltCdfShape +1368 +429, +WebRtcIsac_kQKltCdfShape +1368 +456, WebRtcIsac_kQKltCdfShape +1368 +459, WebRtcIsac_kQKltCdfShape +1368 +463, WebRtcIsac_kQKltCdfShape +1368 +467, WebRtcIsac_kQKltCdfShape +1368 +473, WebRtcIsac_kQKltCdfShape +1368 +478, WebRtcIsac_kQKltCdfShape +1368 +485, WebRtcIsac_kQKltCdfShape +1368 +491, WebRtcIsac_kQKltCdfShape +1368 +497, WebRtcIsac_kQKltCdfShape +1368 +505, +WebRtcIsac_kQKltCdfShape +1368 +514, WebRtcIsac_kQKltCdfShape +1368 +523, WebRtcIsac_kQKltCdfShape +1368 +535, WebRtcIsac_kQKltCdfShape +1368 +548, WebRtcIsac_kQKltCdfShape +1368 +565, WebRtcIsac_kQKltCdfShape +1368 +585, WebRtcIsac_kQKltCdfShape +1368 +611, WebRtcIsac_kQKltCdfShape +1368 +640}}; + +/* code length for all coefficients using different models */ +const double WebRtcIsac_kQKltCodeLenGain[392] = { + 12.29956028, 7.83007500, 4.25642781, 0.17489215, 4.27591254, 7.66908312, 10.47643804, 11.91253716, 9.03421572, 8.57373525, + 6.73555740, 5.41409855, 3.65237863, 0.42623449, 3.22418399, 5.68145719, 7.14201900, 8.20558413, 9.34178852, 13.00000000, + 13.00000000, 9.47643804, 6.71459778, 3.55472644, 0.28457419, 3.70652835, 7.41128536, 11.60768258, 14.00000000, 12.29956028, + 9.29956028, 8.02845645, 6.54878889, 5.07667251, 2.87749552, 0.65310542, 3.11316029, 4.87911416, 5.89540125, 6.76398581, + 7.70537925, 9.67807191, 11.14201900, 14.00000000, 14.00000000, 12.29956028, 9.69621925, 7.70537925, 5.49915812, 2.67441345, + 0.63381441, 2.74999773, 5.76877882, 8.41503750, 10.75207249, 14.00000000, 9.60768258, 8.85025288, 8.09913319, 7.09010692, + 6.36337538, 5.46667027, 4.51618422, 2.64189829, 1.21843537, 2.43823474, 3.89409149, 4.99718498, 6.00989604, 6.78325414, + 7.39637366, 8.76159526, 10.60768258, 11.67807191, 12.29956028, 9.54056838, 7.95560588, 5.63040265, 3.81264793, 2.18521728, + 1.33727600, 2.37909290, 3.94981123, 5.52426657, 7.32051990, 8.84012866, 11.35614381, 13.00000000, 12.29956028, 11.35614381, + 11.35614381, 10.24511250, 9.12963528, 8.80032766, 7.97763219, 7.83007500, 7.09913319, 6.68711704, 6.41879942, 5.74379131, + 5.25096862, 4.43061904, 3.54492969, 2.72664147, 2.16306204, 2.71142226, 3.34357514, 4.07444556, 4.95151313, 5.68145719, + 6.12041675, 6.55085135, 7.00282052, 7.55705650, 8.44541115, 9.41503750, 10.91253716, 11.60768258, 14.00000000, 14.00000000, + 13.00000000, 11.60768258, 10.47643804, 8.80032766, 7.38161450, 6.52426657, 5.47447919, 4.53749773, 3.92719747, 3.41058292, + 2.88495635, 2.79344346, 2.85805254, 3.18261657, 3.57216340, 4.08225499, 4.74438125, 5.51215997, 6.30477171, 7.15450995, + 8.28575448, 9.69621925, 11.60768258, 13.00000000, 13.67807191, 15.00000000, 15.00000000, 14.00000000, 12.41503750, 11.29956028, + 12.41503750, 11.60768258, 10.11735695, 9.47643804, 9.12963528, 9.41503750, 8.23181568, 7.97763219, 7.82507432, 7.50814690, + 7.33466408, 6.99157138, 6.95834085, 6.80524315, 6.47447919, 6.35614381, 6.02128954, 5.71459778, 5.58109327, 5.05821876, + 4.94539568, 4.59220115, 4.27591254, 4.01522554, 3.89376424, 3.83760867, 3.73321346, 3.74674342, 3.90493270, 4.18942837, + 4.33599724, 4.42446075, 4.81760565, 5.07667251, 5.54570071, 5.95697272, 6.46667027, 6.91253716, 7.33466408, 7.82507432, + 8.05163277, 9.12963528, 9.02272008, 9.77118131, 9.60768258, 10.11735695, 12.00000000, 12.83007500, 15.00000000, 15.00000000, + 14.00000000, 15.00000000, 11.75207249, 12.29956028, 10.95560588, 9.93391081, 9.02272008, 8.00564656, 7.82507432, 7.28919357, + 6.77599833, 6.56745810, 6.19910010, 6.23347109, 5.67694524, 5.41879942, 4.96039548, 4.88170777, 4.60768258, 4.52883287, + 4.28876323, 4.17583679, 4.21332197, 4.14474217, 4.16119001, 4.12809476, 4.18501706, 4.28489599, 4.35299136, 4.60286019, + 4.63040265, 4.81017544, 5.00989604, 5.33822190, 5.43489792, 5.84644797, 6.13272126, 6.75444729, 7.36337538, 7.96108101, + 8.54056838, 9.28575448, 9.12963528, 9.47643804, 10.75207249, 12.29956028, 12.41503750, 11.14201900, 12.83007500, 15.00000000, + 15.00000000, 15.00000000, 15.00000000, 15.00000000, 15.00000000, 14.00000000, 15.00000000, 15.00000000, 15.00000000, 15.00000000, + 13.67807191, 12.41503750, 11.91253716, 11.60768258, 12.29956028, 13.00000000, 12.29956028, 10.95560588, 10.60768258, 9.77118131, + 10.02272008, 10.11735695, 10.14201900, 10.75207249, 10.75207249, 9.69621925, 9.47643804, 9.75207249, 8.72387559, 8.47643804, + 8.68711704, 8.40754296, 8.20558413, 8.26529038, 7.84518189, 7.89147554, 7.64685317, 7.41128536, 7.33466408, 7.42635281, + 7.24845594, 7.11430363, 7.07518750, 7.07518750, 6.70537925, 6.64906082, 6.73555740, 6.62931259, 6.50015411, 6.26190774, + 6.36337538, 6.19264508, 5.95151313, 6.08860801, 5.91253716, 5.83007500, 5.68145719, 5.67244736, 5.82632286, 6.00282052, + 5.65348627, 5.74970158, 5.87846648, 5.69052365, 5.64464890, 5.58531476, 5.81512466, 5.57688409, 5.87329553, 5.62170514, + 5.74851759, 5.81017544, 5.64464890, 5.76398581, 5.60339522, 5.69507833, 5.84139031, 5.68711704, 5.73908047, 5.84139031, + 5.71459778, 5.96245305, 5.82632286, 5.89540125, 6.08860801, 6.12041675, 6.13272126, 6.30477171, 6.24177679, 6.28232358, + 6.29091619, 6.53239445, 6.81512466, 6.72620440, 6.65792533, 6.84518189, 7.10215454, 7.44157929, 7.57793523, 7.59485854, + 7.66460965, 8.05163277, 8.00564656, 8.43775758, 8.10518224, 8.28575448, 8.77118131, 8.23181568, 8.29264087, 8.20558413, + 8.34894831, 8.89147554, 8.40754296, 8.61629571, 8.64244800, 8.61629571, 8.93391081, 8.50814690, 9.02272008, 8.68711704, + 8.65127185, 9.41503750, 9.11735695, 9.85025288, 10.24511250, 10.60768258, 10.47643804, 11.60768258, 11.35614381, 12.29956028, + 15.00000000, 15.00000000, 12.29956028, 13.00000000, 15.00000000, 15.00000000, 15.00000000, 15.00000000, 14.00000000, 12.83007500, + 15.00000000, 15.00000000}; + +const double WebRtcIsac_kQKltCodeLenShape[578] = { + 0.00002201, 0.00002201, 0.00002201, 0.00002201, 0.00002201, 0.00002201, 0.00002201, 0.00002201, 0.00002201, 14.00000000, + 0.00011007, 13.00000000, 0.00066056, 11.60768258, 11.14201900, 0.00185034, 10.24511250, 9.08113676, 0.00480700, 9.41503750, + 8.09913319, 0.01084946, 8.02845645, 13.00000000, 6.40941295, 0.02926496, 6.95560588, 13.00000000, 13.00000000, 6.21864029, + 0.03861814, 6.30477171, 12.29956028, 11.14201900, 4.66964328, 0.12158980, 4.62604734, 10.91253716, 14.00000000, 11.35614381, + 8.76159526, 3.89671219, 0.21179147, 3.99472634, 8.02272008, 13.00000000, 0.00002201, 0.00002201, 0.00002201, 0.00002201, + 14.00000000, 0.00011007, 0.00002201, 0.00002201, 0.00002201, 0.00002201, 14.00000000, 0.00011007, 10.95560588, 0.00147568, + 10.95560588, 10.24511250, 0.00240150, 10.24511250, 8.02845645, 0.01056115, 8.17982104, 6.74497143, 0.02381629, 7.15137706, + 5.68598330, 0.05650076, 5.72970467, 13.00000000, 14.00000000, 5.18221688, 0.07697435, 5.37611851, 11.91253716, 9.54056838, + 3.92853764, 0.22143514, 3.76428491, 9.28575448, 14.00000000, 11.35614381, 7.37794818, 3.30585980, 0.37001735, 3.18521728, + 6.88886433, 11.91253716, 14.00000000, 0.00002201, 0.00002201, 0.00002201, 0.00002201, 14.00000000, 0.00019814, 14.00000000, + 0.00002201, 13.00000000, 0.00028621, 14.00000000, 14.00000000, 0.00028621, 13.00000000, 11.91253716, 0.00094690, 11.35614381, + 10.60768258, 0.00213692, 10.24511250, 8.37794818, 0.00863317, 8.43775758, 14.00000000, 7.41128536, 0.01698415, 7.42635281, + 6.02702021, 0.04514485, 6.01558154, 13.00000000, 5.05090284, 0.09207659, 4.98877274, 15.00000000, 10.75207249, 4.41081703, + 0.15733047, 4.17424617, 11.60768258, 14.00000000, 15.00000000, 10.06926266, 3.74320161, 0.23091117, 3.81141115, 10.02272008, + 11.91253716, 6.90196792, 2.92703003, 0.46874039, 2.93846004, 7.26190774, 11.60768258, 13.00000000, 10.21864029, 7.95560588, + 5.19345038, 2.40520888, 0.77554605, 2.56628417, 5.41409855, 8.81017544, 12.29956028, 0.00002201, 0.00002201, 0.00002201, + 0.00002201, 11.91253716, 0.00068259, 12.29956028, 10.11735695, 0.00233535, 10.47643804, 10.35614381, 0.00140957, 12.29956028, + 10.24511250, 0.00222511, 10.47643804, 7.72387559, 0.01475842, 7.52426657, 6.73555740, 0.02924249, 6.55085135, 14.00000000, + 5.45021533, 0.06930886, 5.38345116, 4.55913083, 0.11289841, 4.92853764, 11.60768258, 4.07148162, 0.19798859, 3.87200568, + 13.00000000, 9.60768258, 3.31393725, 0.29937064, 3.57321111, 9.35614381, 14.00000000, 8.02845645, 3.08542800, 0.45503557, + 2.80678268, 7.47643804, 12.29956028, 14.00000000, 14.00000000, 14.00000000, 6.83509307, 2.69166097, 0.61673447, 2.51266238, + 6.84771516, 11.91253716, 11.14201900, 7.72387559, 4.61899789, 2.17136763, 1.03592993, 2.28586183, 4.86814304, 7.78568088, + 10.91253716, 14.00000000, 15.00000000, 11.04580369, 9.28575448, 7.26190774, 5.21946023, 3.61575588, 2.18431651, 1.45666604, + 2.33566383, 3.85470467, 5.46181107, 7.30651304, 8.89147554, 11.91253716, 0.00002201, 0.00002201, 15.00000000, 0.00011007, + 15.00000000, 10.47643804, 0.00149771, 11.60768258, 7.30651304, 0.01903486, 7.20558413, 6.92318440, 0.02587674, 6.71459778, + 7.28919357, 0.01756340, 7.45696818, 6.06926266, 0.03841465, 6.45890338, 4.46035649, 0.13896157, 4.43204392, 14.00000000, + 14.00000000, 4.09010692, 0.19672654, 3.86653665, 13.00000000, 14.00000000, 11.35614381, 3.45117809, 0.27340929, 3.64878468, + 9.93391081, 9.60768258, 3.30585980, 0.35178287, 3.15607895, 9.12963528, 12.29956028, 7.93391081, 2.82180202, 0.53064436, + 2.68258739, 7.42635281, 11.14201900, 15.00000000, 10.06926266, 6.15294265, 2.55861197, 0.69308389, 2.48602573, 5.90592231, + 9.47643804, 13.00000000, 11.14201900, 8.20558413, 5.21618324, 2.34973357, 1.00379135, 2.09611815, 4.80278331, 7.82507432, + 11.91253716, 12.29956028, 8.98877274, 6.75444729, 4.23886435, 2.19859476, 1.29528579, 2.06032897, 4.06704711, 6.76398581, + 9.34178852, 13.00000000, 12.29956028, 10.14201900, 8.40754296, 6.16710999, 4.64850859, 3.28768796, 2.22892326, 1.78568088, + 2.35209193, 3.45141888, 4.91121176, 6.45117809, 8.20558413, 10.35614381, 13.00000000, 12.83007500, 14.00000000, 14.00000000, + 12.83007500, 11.35614381, 9.85025288, 9.41503750, 8.07518750, 7.34894831, 6.25516616, 5.25096862, 4.52477322, 3.68513357, + 3.06152306, 2.64011320, 2.54608637, 2.95765662, 3.44445223, 4.01665007, 4.63258525, 5.27633906, 6.24678325, 7.05163277, + 8.02845645, 9.60768258, 10.79054663, 12.83007500, 14.00000000, 0.00002201, 15.00000000, 0.00011007, 15.00000000, 5.82009091, + 0.02710994, 10.11735695, 15.00000000, 3.30346709, 0.17317845, 6.41128536, 15.00000000, 15.00000000, 10.83007500, 2.72897475, + 0.35935964, 3.85853144, 13.00000000, 15.00000000, 3.72766182, 0.17268211, 4.74674342, 15.00000000, 15.00000000, 4.40754296, + 0.11993823, 4.93997965, 15.00000000, 15.00000000, 4.70193743, 0.22110152, 3.27591254, 11.35614381, 15.00000000, 12.54056838, + 6.94743195, 2.99157138, 0.62079088, 2.25338071, 7.41128536, 15.00000000, 15.00000000, 11.47643804, 6.04580369, 2.80232255, + 0.98380109, 1.70502034, 5.15607895, 10.75207249, 13.00000000, 15.00000000, 15.00000000, 11.35614381, 6.44157929, 2.37955105, + 0.74567258, 2.44181848, 6.07667251, 10.75207249, 15.00000000, 15.00000000, 15.00000000, 15.00000000, 9.44541115, 5.25432568, + 1.97815248, 0.94086682, 2.57885561, 5.17265730, 8.72387559, 14.00000000, 15.00000000, 15.00000000, 15.00000000, 10.67807191, + 7.59485854, 4.91187431, 2.91934900, 1.32321648, 1.50614455, 3.85215911, 7.15137706, 10.60768258, 14.00000000, 15.00000000, + 15.00000000, 15.00000000, 15.00000000, 15.00000000, 15.00000000, 15.00000000, 11.09310940, 8.50814690, 6.45117809, 3.94675287, + 2.16730774, 1.37674720, 2.10215454, 3.97278511, 6.34178852, 8.50814690, 10.32757466, 14.00000000, 14.00000000, 15.00000000, + 15.00000000, 15.00000000, 14.00000000, 10.02272008, 9.41503750, 7.03710399, 5.13349379, 3.61683574, 2.47999526, 1.82788507, + 2.00945280, 3.08020557, 4.69793233, 6.64025044, 8.32051990, 10.91253716, 14.00000000, 15.00000000, 15.00000000, 15.00000000, + 15.00000000, 15.00000000, 15.00000000, 14.41503750, 9.41503750, 7.10215454, 5.60768258, 4.44014496, 3.30064444, 2.56941678, + 2.28103909, 2.42694459, 2.93206152, 3.83383692, 4.75207249, 6.02702021, 7.16394964, 9.35614381, 11.14201900, 12.29956028, + 15.00000000, 15.00000000, 14.00000000, 15.00000000, 15.00000000, 10.11735695, 8.85025288, 7.02558541, 5.86300889, 4.79726396, + 3.95117259, 3.44925321, 2.96348293, 2.88219459, 2.89671219, 3.10518224, 3.50065237, 4.05748549, 4.55291677, 5.23016216, + 5.79420675, 6.39452048, 6.91253716, 7.97763219, 8.32051990, 9.35614381, 10.60768258, 11.60768258, 15.00000000, 15.00000000, + 12.83007500, 12.41503750, 11.91253716, 14.00000000, 14.00000000, 11.35614381, 10.75207249, 10.91253716, 8.93391081, 8.61629571, + 8.29264087, 8.02272008, 7.89147554, 7.33466408, 7.41128536, 6.71459778, 5.92853764, 5.31964048, 4.97693875, 4.70308379, + 4.43632704, 4.34357514, 4.30825648, 4.26529038, 4.19465917, 4.27420773, 4.22315577, 4.08262792, 4.06667818, 4.16119001, + 4.08860801, 4.26698468, 4.39128315, 4.71517590, 5.10442472, 5.50714538, 5.81017544, 6.15922208}; + +/* left KLT transforms */ +const double WebRtcIsac_kKltT1Gain[3][4] = { +{-0.79742827, 0.60341375, 0.60341375, 0.79742827}, +{-0.81372390, 0.58125159, 0.58125159, 0.81372390}, +{-0.71832547, 0.69570721, 0.69570721, 0.71832547}}; + +const double WebRtcIsac_kKltT1Shape[3][324] = { +{ 0.00159597, 0.00049320, 0.00513821, 0.00021066, 0.01338581, -0.00422367, -0.00272072, 0.00935107, 0.02047622, 0.02691189, + 0.00478236, 0.03969702, 0.00886698, 0.04877604, -0.10898362, -0.05930891, -0.03415047, 0.98889721, 0.00293558, -0.00035282, + 0.01156321, -0.00195341, -0.00937631, 0.01052213, -0.02551163, 0.01644059, 0.03189927, 0.07754773, -0.08742313, -0.03026338, + 0.05136248, -0.14395974, 0.17725040, 0.22664856, 0.93380230, 0.07076411, 0.00557890, -0.00222834, 0.01377569, 0.01466808, + 0.02847361, -0.00603178, 0.02382480, -0.01210452, 0.03797267, -0.02371480, 0.11260335, -0.07366682, 0.00453436, -0.04136941, +-0.07912843, -0.95031418, 0.25295337, -0.05302216, -0.00617554, -0.00044040, -0.00653778, 0.01097838, 0.01529174, 0.01374431, +-0.00748512, -0.00020034, 0.02432713, 0.11101570, -0.08556891, 0.09282249, -0.01029446, 0.67556443, -0.67454300, 0.06910063, + 0.20866865, -0.10318050, 0.00932175, 0.00524058, 0.00803610, -0.00594676, -0.01082578, 0.01069906, 0.00546768, 0.01565291, + 0.06816200, 0.10201227, 0.16812734, 0.22984074, 0.58213170, -0.54138651, -0.51379962, 0.06847390, -0.01920037, -0.04592324, +-0.00467394, 0.00328858, 0.00377424, -0.00987448, 0.08222096, -0.00377301, 0.04551941, -0.02592517, 0.16317082, 0.13077530, + 0.22702921, -0.31215289, -0.69645962, -0.38047101, -0.39339411, 0.11124777, 0.02508035, -0.00708074, 0.00400344, 0.00040331, + 0.01142402, 0.01725406, 0.01635170, 0.14285366, 0.03949233, -0.05905676, 0.05877154, -0.17497577, -0.32479440, 0.80754464, +-0.38085603, -0.17055430, -0.03168622, -0.07531451, 0.02942002, -0.02148095, -0.00754114, -0.00322372, 0.00567812, -0.01701521, +-0.12358320, 0.11473564, 0.09070136, 0.06533068, -0.22560802, 0.19209022, 0.81605094, 0.36592275, -0.09919829, 0.16667122, + 0.16300725, 0.04803807, 0.06739263, -0.00156752, -0.01685302, -0.00905240, -0.02297836, -0.00469939, 0.06310613, -0.16391930, + 0.10919511, 0.12529293, 0.85581322, -0.32145522, 0.24539076, 0.07181839, 0.07289591, 0.14066759, 0.10406711, 0.05815518, + 0.01072680, -0.00759339, 0.00053486, -0.00044865, 0.03407361, 0.01645348, 0.08758579, 0.27722240, 0.53665485, -0.74853376, +-0.01118192, -0.19805430, 0.06130619, -0.09675299, 0.08978480, 0.03405255, -0.00706867, 0.05102045, 0.03250746, 0.01849966, +-0.01216314, -0.01184187, -0.01579288, 0.00114807, 0.11376166, 0.88342114, -0.36425379, 0.13863190, 0.12524180, -0.13553892, + 0.04715856, -0.12341103, 0.04531568, 0.01899360, -0.00206897, 0.00567768, -0.01444163, 0.00411946, -0.00855896, 0.00381663, +-0.01664861, -0.05534280, 0.21328278, 0.20161162, 0.72360394, 0.59130708, -0.08043791, 0.08757349, -0.13893918, -0.05147377, + 0.02680690, -0.01144070, 0.00625162, -0.00634215, -0.01248947, -0.00329455, -0.00609625, -0.00136305, -0.05097048, -0.01029851, + 0.25065384, -0.16856837, -0.07123372, 0.15992623, -0.39487617, -0.79972301, 0.18118185, -0.04826639, -0.01805578, -0.02927253, +-0.16400618, 0.07472763, 0.10376449, 0.01705406, 0.01065801, -0.01500498, 0.02039914, 0.37776349, -0.84484186, 0.10434286, + 0.15616990, 0.13474456, -0.00906238, -0.25238368, -0.03820885, -0.10650905, -0.03880833, -0.03660028, -0.09640894, 0.00583314, + 0.01922097, 0.01489911, -0.02431117, -0.09372217, 0.39404721, -0.84786223, -0.31277121, 0.03193850, 0.01974060, 0.01887901, + 0.00337911, -0.11359599, -0.02792521, -0.03220184, -0.01533311, 0.00015962, -0.04225043, -0.00933965, 0.00675311, 0.00206060, + 0.15926771, 0.40199829, -0.80792558, -0.35591604, -0.17169764, 0.02830436, 0.02459982, -0.03438589, 0.00718705, -0.01798329, +-0.01594508, -0.00702430, -0.00952419, -0.00962701, -0.01307212, -0.01749740, 0.01299602, 0.00587270, -0.36103108, -0.82039266, +-0.43092844, -0.08500097, -0.04361674, -0.00333482, 0.01250434, -0.02538295, -0.00921797, 0.01645071, -0.01400872, 0.00317607, + 0.00003277, -0.01617646, -0.00616863, -0.00882661, 0.00466157, 0.00353237, 0.91803104, -0.39503305, -0.02048964, 0.00060125, + 0.01980634, 0.00300109, 0.00313880, 0.00657337, 0.00715163, 0.00000261, 0.00854276, -0.00154825, -0.00516128, 0.00909527, + 0.00095609, 0.00701196, -0.00221867, -0.00156741}, +{-0.00469582, -0.00020403, -0.00587134, 0.00185153, -0.02256479, -0.01185761, -0.02891481, -0.00493792, -0.00182344, 0.00285962, + 0.01558059, -0.02185140, 0.04639438, -0.04357142, 0.12718613, -0.06756136, 0.05542227, 0.98480184, -0.00374376, -0.00236433, +-0.00607169, -0.00303290, -0.00127243, -0.01794845, 0.00620033, -0.00732704, -0.02837749, -0.00107164, 0.04820548, 0.00713300, + 0.09784244, -0.16806261, -0.04563341, -0.33406041, 0.91554083, -0.08139655, -0.00415851, -0.00538193, -0.00731198, -0.00534534, +-0.00623075, -0.02016943, -0.05480133, -0.03172290, -0.03879603, 0.01518441, 0.09591688, 0.02238470, 0.08126640, 0.08236821, +-0.24802119, 0.89516402, 0.32029647, 0.07188887, -0.00220366, 0.00344025, -0.00277284, 0.00358963, -0.08668007, -0.02205910, +-0.05289669, -0.03535201, -0.01188017, -0.06456872, -0.09321006, -0.00009617, -0.15804070, 0.24632041, 0.90166119, 0.19250690, + 0.17264619, -0.09699155, -0.00567329, -0.00897700, -0.01442565, -0.01939390, 0.03702127, -0.02999862, -0.04385696, -0.05232394, +-0.03339177, 0.03905964, -0.00281424, -0.29213275, 0.02892968, 0.90257613, -0.21546058, -0.18070946, 0.09014567, 0.04117230, +-0.01029696, -0.00329116, -0.03354346, 0.02937079, 0.01274208, -0.01260649, -0.03505571, -0.01020645, 0.03787209, 0.12132165, +-0.20826840, 0.81556933, -0.43874351, 0.21518682, -0.14564290, -0.05210031, 0.07124563, 0.06127983, -0.00457321, 0.01740496, + 0.04185176, 0.00128036, -0.05033693, -0.01890046, 0.06221734, 0.10280078, -0.03738531, 0.04830209, -0.08408293, -0.46409009, +-0.83936263, -0.14817619, -0.13135927, 0.04563506, 0.08340661, 0.04040200, 0.00044396, -0.01365972, 0.01228951, 0.01078273, + 0.09205406, -0.03791500, 0.07135889, 0.08158339, 0.06298278, -0.22875755, -0.92917558, -0.11248260, 0.17801883, -0.03971674, +-0.07491915, 0.06477287, 0.04635713, 0.01856159, 0.00130895, -0.01991604, 0.02358176, -0.09376056, 0.02782280, -0.04691559, + 0.13749249, 0.31383132, 0.92274602, 0.04727419, 0.09765196, -0.02108945, 0.00626005, 0.05193322, 0.02009133, 0.03094066, + 0.04573470, 0.00451733, 0.00240169, -0.00982355, -0.03546208, -0.14156875, -0.02480689, 0.22997442, 0.09778317, 0.88834235, +-0.32797611, -0.00079977, 0.04917079, 0.06977359, 0.06451185, 0.07816204, 0.03119314, 0.01136506, 0.01062006, 0.00632783, + 0.03241828, -0.03318847, -0.01350502, -0.30055361, 0.07265375, 0.17308022, 0.88795796, -0.23231020, -0.08932700, 0.11759604, + 0.00590705, 0.03525351, 0.00840466, 0.04389942, 0.04387629, 0.04003275, 0.01772966, 0.02709780, -0.02393282, 0.02766178, + 0.00342983, -0.33882220, 0.76612668, 0.44061716, -0.28414784, -0.09364014, 0.03694060, 0.01124120, 0.01130268, -0.02869682, +-0.07428963, -0.03504754, 0.05874942, 0.01196795, 0.02003875, 0.00787152, -0.01605561, 0.04501257, -0.06959958, -0.13015784, +-0.05738065, 0.04681625, 0.06668700, -0.04492094, 0.02927765, -0.94404277, 0.19243952, 0.09504337, -0.12540826, 0.05394317, +-0.07972638, -0.02145188, 0.00136427, 0.01964678, 0.06667373, 0.06204535, 0.17302394, 0.22005905, 0.58329964, -0.68440447, + 0.19628796, 0.15718011, -0.12481840, -0.08222507, 0.11780870, 0.03798206, -0.01818866, 0.00892766, 0.05582263, 0.01126832, +-0.00973589, 0.00697442, -0.09937902, 0.06621185, -0.19452202, -0.80004569, -0.13946094, -0.48990700, -0.17595191, -0.00798873, +-0.06121856, 0.08768040, -0.04507631, 0.00448896, 0.01153941, -0.04711652, -0.01050749, -0.01660047, -0.03007159, -0.01468906, + 0.12848053, 0.13859838, 0.93863771, -0.22250065, -0.14841278, 0.04666032, -0.06344813, -0.01915105, -0.01840150, -0.02389410, +-0.01245496, 0.05023402, 0.02125840, 0.02467318, -0.01893022, -0.00889647, 0.00551817, 0.00481915, -0.40626968, -0.89028236, + 0.18261687, -0.03852330, 0.02621926, -0.05420122, -0.01704117, -0.00072893, -0.02694170, -0.04335124, 0.02256467, 0.00642301, +-0.01619484, -0.00871160, 0.00400065, -0.00488820, -0.00752173, -0.00170603, 0.89554989, -0.41825934, -0.08725803, -0.09051404, +-0.00916236, -0.02959065, -0.07268075, -0.00816626, -0.00314215, -0.01941078, -0.00036782, -0.00188655, -0.02107724, -0.00771657, +-0.00448194, -0.00387517, 0.00082998, 0.00202471}, +{ 0.00167296, -0.00647772, -0.00604394, 0.01490810, -0.00837664, 0.00246438, 0.02082153, 0.01216715, 0.01001396, -0.02850860, +-0.01187868, -0.00113289, 0.04140237, -0.11084998, 0.16102260, 0.20084170, -0.28969446, -0.91312256, 0.00087788, -0.00136895, + 0.00004622, 0.00578894, 0.00524119, -0.00044550, 0.00948906, -0.00396910, -0.03312197, -0.00075487, 0.00987494, -0.02088734, + 0.09835550, -0.20080342, 0.13687782, -0.16111863, -0.90089988, 0.30312999, 0.00248784, -0.00975419, -0.01617200, 0.00699371, +-0.02151635, -0.01625774, -0.01262800, 0.02588781, -0.05620764, -0.13651454, 0.04242442, -0.02615307, 0.20497288, -0.20422909, + 0.14184406, 0.89712919, 0.01758042, 0.25447787, -0.00207668, -0.00260329, 0.00724812, -0.01007749, 0.00806242, -0.03089729, +-0.01161934, -0.00618676, -0.10327342, -0.10160272, 0.11919283, 0.20781533, 0.11564869, -0.19072476, 0.86402008, -0.24650846, + 0.24684161, 0.04775750, 0.00486888, -0.01735569, -0.01868000, -0.01870386, -0.03243262, -0.05883701, -0.03433371, 0.10441236, +-0.22831067, -0.22837988, 0.15082544, -0.21313767, 0.13215611, -0.78096079, -0.32270595, -0.21307018, 0.17339271, -0.05435742, +-0.00940813, 0.00272520, 0.00542917, -0.05232991, -0.01280809, -0.10773627, -0.17626479, 0.03719285, -0.26297104, -0.21780618, + 0.21406665, 0.15202177, 0.75911044, 0.38627481, -0.16504189, -0.10242997, -0.02394939, -0.06018959, 0.00994733, -0.02617197, +-0.01543723, -0.10320051, -0.03010481, -0.19098072, -0.06893233, 0.12253174, -0.25556092, -0.31989059, 0.09542655, 0.72712041, +-0.43108921, -0.01568072, -0.16532685, 0.06646835, -0.08885408, -0.00050364, -0.01791050, 0.00245405, 0.00204794, -0.17948691, +-0.05193881, -0.16329387, -0.13676259, 0.01214133, -0.30994612, -0.00687734, 0.63254090, -0.47180795, -0.35409214, 0.23658315, + 0.11170294, 0.05229887, -0.06107035, -0.01094212, 0.01523854, -0.01608284, -0.03739206, -0.23864328, -0.03958494, -0.19305719, +-0.26019058, 0.24108257, -0.55933566, 0.40623396, -0.53367968, -0.08930957, -0.00599383, -0.00050845, 0.06960811, 0.02664961, + 0.01464197, -0.00486781, -0.01905736, 0.01437578, 0.02379930, -0.26639588, 0.05208876, -0.43525002, -0.63009424, 0.05251889, + 0.56732782, -0.06731164, -0.03705909, -0.03253946, 0.00950673, -0.07941760, 0.02388267, -0.01258409, -0.00343524, 0.00148711, +-0.00362107, 0.03981813, -0.07235214, -0.46180041, -0.05595288, -0.55699317, 0.61935853, -0.25379716, 0.06796783, 0.01039267, +-0.06329171, -0.02143024, 0.09406929, -0.00799203, -0.01419805, -0.00603024, 0.01313145, 0.00091161, -0.00212107, -0.02405340, + 0.07146405, -0.76695326, -0.14841817, 0.60372663, -0.01478424, 0.06522462, 0.08580016, -0.05817981, 0.02438942, 0.04840904, + 0.02934363, -0.02239678, -0.00582247, -0.00091312, -0.00394148, -0.00285276, -0.03435745, 0.05277435, 0.17882781, -0.06194164, + 0.27321118, 0.01840179, -0.10188148, -0.33168524, -0.03491221, 0.67351789, 0.37017376, 0.32083717, 0.09737800, -0.20998084, +-0.10725041, 0.06379186, 0.02169903, -0.02031584, 0.05623799, -0.18300962, -0.17337803, 0.08915172, -0.53835537, -0.08547263, + 0.15163321, 0.56732906, 0.21878115, 0.37274266, 0.26206918, 0.13443927, 0.09178695, -0.03276324, -0.01131664, -0.00236369, + 0.00772568, 0.01008805, -0.17122615, 0.15301569, 0.40135484, -0.06058913, 0.56405128, -0.05176853, 0.24544337, 0.62448073, + 0.07265009, -0.01198695, 0.05151774, -0.03678498, 0.01886154, 0.03724094, 0.01393667, 0.00758055, -0.00254297, 0.00537118, + 0.24169707, -0.41735970, -0.67564355, -0.09270478, 0.53106033, 0.06214579, 0.02574404, 0.09943837, 0.03032542, 0.02194476, + 0.06369772, -0.00133741, 0.01301113, 0.01508494, 0.00036111, -0.00278870, 0.00139205, 0.00015792, -0.43347887, 0.69923146, +-0.55406563, -0.01102231, 0.01347767, 0.07012139, -0.02530164, 0.06803192, 0.01177196, 0.04374491, 0.04073027, 0.04037438, + 0.00167330, -0.01807065, -0.00425562, 0.00149653, -0.00035119, -0.00172888, 0.84785495, 0.52289580, 0.01067734, -0.00859194, + 0.01685964, 0.00481442, 0.00434738, 0.07592695, 0.01419942, 0.01005336, 0.03316937, 0.00360465, 0.00435039, 0.00029122, + 0.00171268, 0.00198919, -0.00046889, -0.00094176}}; + +/* right KLT transforms */ +const double WebRtcIsac_kKltT2Gain[3][36] = { +{ 0.14572837, -0.45446306, 0.61990621, -0.52197033, 0.32145074, -0.11026900, -0.20698282, 0.48962182, -0.27127933, -0.33627476, + 0.65094037, -0.32715751, 0.40262573, -0.47844405, -0.33876075, 0.44130653, 0.37383966, -0.39964662, -0.51730480, 0.06611973, + 0.49030187, 0.47512886, -0.02141226, -0.51129451, -0.58578569, -0.39132064, -0.13187771, 0.15649421, 0.40735596, 0.54396897, + 0.40381276, 0.40904942, 0.41179766, 0.41167576, 0.40840251, 0.40468132}, +{-0.11368135, 0.34815515, -0.56434996, 0.61130763, -0.39970336, 0.11795708, 0.28514257, -0.58879243, 0.32775812, 0.27024886, +-0.56251299, 0.27411037, 0.42649186, -0.44080232, -0.36408215, 0.35932457, 0.43592895, -0.41484213, -0.49813030, -0.00012592, + 0.49865688, 0.47634953, 0.01094246, -0.52552726, -0.56154082, -0.41110686, -0.14170764, 0.15946614, 0.40818082, 0.55094554, + 0.40051601, 0.41084781, 0.41567800, 0.41450700, 0.40871872, 0.39891823}, +{-0.10719481, 0.34796287, -0.54573957, 0.59521001, -0.43943367, 0.14907223, 0.26554957, -0.59549939, 0.36760692, 0.26040652, +-0.55268701, 0.25778784, 0.38994096, -0.45282773, -0.37975656, 0.40213055, 0.43052647, -0.38937904, -0.52698359, 0.02788094, + 0.48284286, 0.47792474, 0.02557759, -0.50922240, -0.57699826, -0.39476779, -0.14708238, 0.12742149, 0.37835245, 0.57464021, + 0.39408127, 0.40327462, 0.40993655, 0.41419345, 0.41506301, 0.41253853}}; + +const double WebRtcIsac_kKltT2Shape[3][36] = { +{ 0.13427386, -0.35132558, 0.52506528, -0.59419077, 0.45075085, -0.16312057, 0.29857439, -0.58660147, 0.34265431, 0.20879510, +-0.56063262, 0.30238345, 0.43308283, -0.41186999, -0.35288681, 0.42768996, 0.36094634, -0.45284910, -0.47116680, 0.02893449, + 0.54326135, 0.45249040, -0.06264420, -0.52283830, 0.57137758, 0.44298139, 0.12617554, -0.20819946, -0.42324603, -0.48876443, + 0.39597050, 0.40713935, 0.41389880, 0.41512486, 0.41130400, 0.40575001}, +{ 0.16540737, -0.43379435, 0.58165221, -0.55154773, 0.35734028, -0.11935912, 0.29434254, -0.55954817, 0.23549804, 0.33087258, +-0.58848503, 0.29835834, 0.45464789, -0.38316155, -0.41689708, 0.35607296, 0.41260747, -0.41910198, -0.48633899, -0.04144955, + 0.47824583, 0.51050942, 0.01000345, -0.52184032, 0.53488229, 0.42641051, 0.17049774, -0.15849613, -0.43229355, -0.53945045, + 0.39582002, 0.41033103, 0.41788713, 0.41688080, 0.41081697, 0.39719658}, +{ 0.13386268, -0.37919915, 0.54989123, -0.57663572, 0.42402636, -0.15362720, 0.29641577, -0.58806770, 0.31381040, 0.26524954, +-0.56271012, 0.28431868, 0.42699898, -0.41058922, -0.40408270, 0.39215865, 0.40788513, -0.40699735, -0.49846482, -0.01521208, + 0.48756040, 0.49479418, -0.00347672, -0.51841384, 0.55513106, 0.41683793, 0.15131217, -0.15613621, -0.41029341, -0.54996461, + 0.39402116, 0.40965305, 0.41862791, 0.41730770, 0.41089648, 0.39837262}}; + +/* means of log gains and LAR coefficients*/ +const double WebRtcIsac_kLpcMeansGain[3][12] = { +{-6.86881911, -5.35075273, -6.86792680, -5.36200897, -6.86401538, -5.36921533, -6.86802969, -5.36893966, -6.86538097, -5.36315063, +-6.85535304, -5.35155315}, +{-6.12914600, -4.78070092, -6.12971780, -4.78382183, -6.12858525, -4.79362198, -6.12926491, -4.79017481, -6.12102401, -4.78346122, +-6.11441152, -4.78019228}, +{-5.67273484, -3.73876311, -5.65246094, -3.71407895, -5.61716443, -3.68814580, -5.58804560, -3.66334094, -5.54189577, -3.63845640, +-5.49293185, -3.61760203}}; + +const double WebRtcIsac_kLpcMeansShape[3][108] = { +{-0.91232981, 0.26258634, -0.33716701, 0.08477430, -0.03378426, 0.14423909, 0.07036185, 0.06155019, 0.01490385, 0.04138740, + 0.01427317, 0.01288970, 0.83872106, 0.25750199, 0.07988929, -0.01957923, 0.00831390, 0.01770300, -0.90957164, 0.25732216, +-0.33385344, 0.08735740, -0.03715332, 0.14584917, 0.06998990, 0.06131968, 0.01504379, 0.04067339, 0.01428039, 0.01406460, + 0.83846243, 0.26169862, 0.08109025, -0.01767055, 0.00970539, 0.01954310, -0.90490803, 0.24656405, -0.33578607, 0.08843286, +-0.03749139, 0.14443959, 0.07214669, 0.06170993, 0.01449947, 0.04134309, 0.01314762, 0.01413471, 0.83895203, 0.26748062, + 0.08197507, -0.01781298, 0.00885967, 0.01922394, -0.90922472, 0.24495889, -0.33921540, 0.08877169, -0.03581332, 0.14199172, + 0.07444032, 0.06185940, 0.01502054, 0.04185113, 0.01276579, 0.01355457, 0.83645358, 0.26631720, 0.08119697, -0.01835449, + 0.00788512, 0.01846446, -0.90482253, 0.24658310, -0.34019734, 0.08281090, -0.03486038, 0.14359248, 0.07401336, 0.06001471, + 0.01528421, 0.04254560, 0.01321472, 0.01240799, 0.83857127, 0.26281654, 0.08174380, -0.02099842, 0.00755176, 0.01699448, +-0.90132307, 0.25174308, -0.33838268, 0.07883863, -0.02877906, 0.14105407, 0.07220290, 0.06000352, 0.01684879, 0.04226844, + 0.01331331, 0.01269244, 0.83832138, 0.25467485, 0.08118028, -0.02120528, 0.00747832, 0.01567212}, +{-1.11639718, 0.35377266, 0.00798929, 0.20165280, 0.07656104, 0.10629964, 0.04894160, 0.10955305, -0.01806405, 0.05082282, + 0.01730794, 0.01345957, 0.73717782, 0.05952284, 0.03176204, 0.08195122, 0.01253148, 0.02253385, -1.12053537, 0.35523538, + 0.00859646, 0.20007706, 0.07715852, 0.10754596, 0.05165976, 0.10927703, -0.01554395, 0.05178866, 0.01752534, 0.01343468, + 0.73489046, 0.06395167, 0.03287798, 0.07972374, 0.01293550, 0.02300929, -1.11772179, 0.35457623, 0.01205524, 0.19926481, + 0.08000866, 0.10817921, 0.05052481, 0.11016167, -0.01552091, 0.05155510, 0.01787163, 0.01343778, 0.73142568, 0.06840830, + 0.03316828, 0.07902608, 0.01525042, 0.02178127, -1.12120164, 0.36405233, 0.00630305, 0.19799738, 0.07829690, 0.10727588, + 0.04017317, 0.10437949, -0.01844109, 0.05021700, 0.01561726, 0.01226571, 0.73438044, 0.06947982, 0.03396317, 0.07858683, + 0.01367105, 0.02041955, -1.12146187, 0.35952226, 0.00340090, 0.19700813, 0.07938222, 0.10904137, 0.03921216, 0.10531403, +-0.01833415, 0.04956231, 0.01399539, 0.01323582, 0.74378099, 0.07059589, 0.03367692, 0.08151462, 0.01182040, 0.02075577, +-1.11245254, 0.35234230, 0.00687490, 0.20204252, 0.07813186, 0.11081259, 0.04634665, 0.11073238, -0.01637954, 0.05104577, + 0.01675122, 0.01448696, 0.74013627, 0.06239059, 0.03129412, 0.08207461, 0.01249475, 0.02189238}, +{-1.27118948, 0.35834331, -0.33499347, 0.13524073, 0.04829079, 0.19542773, 0.05273835, 0.04157974, -0.01755227, 0.01513442, + 0.00386630, 0.02199463, 1.14439142, 0.21903073, 0.14750213, 0.12743356, 0.08463334, 0.06839691, -1.28367777, 0.35556287, +-0.33809405, 0.13627881, 0.04939309, 0.19642571, 0.05354373, 0.04099247, -0.01787481, 0.01472425, 0.00391474, 0.02150716, + 1.14739079, 0.21840872, 0.14643624, 0.12724347, 0.08390642, 0.06811938, -1.29007667, 0.35159558, -0.34154267, 0.13295849, + 0.04883602, 0.19587595, 0.05452759, 0.04174703, -0.01782110, 0.01388270, 0.00374754, 0.02138105, 1.14333767, 0.21690116, + 0.14544599, 0.12606728, 0.08314168, 0.06771389, -1.29856471, 0.35239315, -0.34238732, 0.13277553, 0.04722712, 0.19233156, + 0.05366901, 0.04328110, -0.01657749, 0.01444736, 0.00438108, 0.02102563, 1.13548397, 0.21537812, 0.14357377, 0.12525845, + 0.08230994, 0.06722511, -1.30663540, 0.34366563, -0.34205544, 0.12861679, 0.04655851, 0.18864359, 0.05351285, 0.04358693, +-0.01604498, 0.01431907, 0.00395326, 0.02082299, 1.12207794, 0.21167325, 0.14212491, 0.12418671, 0.08155467, 0.06639789, +-1.31011673, 0.33686271, -0.34379843, 0.12169569, 0.04480323, 0.18637557, 0.05374078, 0.04260827, -0.01588226, 0.01378294, + 0.00396009, 0.02112406, 1.10466984, 0.20905894, 0.14107033, 0.12303074, 0.08047136, 0.06588031}}; + diff --git a/src/mod/codecs/mod_iSAC/lpc_tables.h b/src/mod/codecs/mod_iSAC/lpc_tables.h new file mode 100644 index 0000000000..604d963c37 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/lpc_tables.h @@ -0,0 +1,114 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * lpc_tables.h + * + * header file for coding tables for the LPC coefficients + * + */ + +#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_TABLES_H_ +#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_TABLES_H_ + +#include "structs.h" + +#include "settings.h" + +#define KLT_STEPSIZE 1.00000000 +#define KLT_NUM_AVG_GAIN 0 +#define KLT_NUM_AVG_SHAPE 0 +#define KLT_NUM_MODELS 3 +#define LPC_GAIN_SCALE 4.000f +#define LPC_LOBAND_SCALE 2.100f +#define LPC_LOBAND_ORDER ORDERLO +#define LPC_HIBAND_SCALE 0.450f +#define LPC_HIBAND_ORDER ORDERHI +#define LPC_GAIN_ORDER 2 + +#define LPC_SHAPE_ORDER (LPC_LOBAND_ORDER + LPC_HIBAND_ORDER) + +#define KLT_ORDER_GAIN (LPC_GAIN_ORDER * SUBFRAMES) +#define KLT_ORDER_SHAPE (LPC_SHAPE_ORDER * SUBFRAMES) +/* indices of KLT coefficients used */ +extern const WebRtc_UWord16 WebRtcIsac_kQKltSelIndGain[12]; + +extern const WebRtc_UWord16 WebRtcIsac_kQKltSelIndShape[108]; + +/* cdf array for model indicator */ +extern const WebRtc_UWord16 WebRtcIsac_kQKltModelCdf[KLT_NUM_MODELS+1]; + +/* pointer to cdf array for model indicator */ +extern const WebRtc_UWord16 *WebRtcIsac_kQKltModelCdfPtr[1]; + +/* initial cdf index for decoder of model indicator */ +extern const WebRtc_UWord16 WebRtcIsac_kQKltModelInitIndex[1]; + +/* offset to go from rounded value to quantization index */ +extern const short WebRtcIsac_kQKltQuantMinGain[12]; + +extern const short WebRtcIsac_kQKltQuantMinShape[108]; + +/* maximum quantization index */ +extern const WebRtc_UWord16 WebRtcIsac_kQKltMaxIndGain[12]; + +extern const WebRtc_UWord16 WebRtcIsac_kQKltMaxIndShape[108]; + +/* index offset */ +extern const WebRtc_UWord16 WebRtcIsac_kQKltOffsetGain[KLT_NUM_MODELS][12]; + +extern const WebRtc_UWord16 WebRtcIsac_kQKltOffsetShape[KLT_NUM_MODELS][108]; + +/* initial cdf index for KLT coefficients */ +extern const WebRtc_UWord16 WebRtcIsac_kQKltInitIndexGain[KLT_NUM_MODELS][12]; + +extern const WebRtc_UWord16 WebRtcIsac_kQKltInitIndexShape[KLT_NUM_MODELS][108]; + +/* offsets for quantizer representation levels */ +extern const WebRtc_UWord16 WebRtcIsac_kQKltOfLevelsGain[3]; + +extern const WebRtc_UWord16 WebRtcIsac_kQKltOfLevelsShape[3]; + +/* quantizer representation levels */ +extern const double WebRtcIsac_kQKltLevelsGain[1176]; + +extern const double WebRtcIsac_kQKltLevelsShape[1735]; + +/* cdf tables for quantizer indices */ +extern const WebRtc_UWord16 WebRtcIsac_kQKltCdfGain[1212]; + +extern const WebRtc_UWord16 WebRtcIsac_kQKltCdfShape[2059]; + +/* pointers to cdf tables for quantizer indices */ +extern const WebRtc_UWord16 *WebRtcIsac_kQKltCdfPtrGain[KLT_NUM_MODELS][12]; + +extern const WebRtc_UWord16 *WebRtcIsac_kQKltCdfPtrShape[KLT_NUM_MODELS][108]; + +/* code length for all coefficients using different models */ +extern const double WebRtcIsac_kQKltCodeLenGain[392]; + +extern const double WebRtcIsac_kQKltCodeLenShape[578]; + +/* left KLT transforms */ +extern const double WebRtcIsac_kKltT1Gain[KLT_NUM_MODELS][4]; + +extern const double WebRtcIsac_kKltT1Shape[KLT_NUM_MODELS][324]; + +/* right KLT transforms */ +extern const double WebRtcIsac_kKltT2Gain[KLT_NUM_MODELS][36]; + +extern const double WebRtcIsac_kKltT2Shape[KLT_NUM_MODELS][36]; + +/* means of log gains and LAR coefficients */ +extern const double WebRtcIsac_kLpcMeansGain[KLT_NUM_MODELS][12]; + +extern const double WebRtcIsac_kLpcMeansShape[KLT_NUM_MODELS][108]; + +#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_TABLES_H_ */ diff --git a/src/mod/codecs/mod_iSAC/lpc_to_refl_coef.c b/src/mod/codecs/mod_iSAC/lpc_to_refl_coef.c new file mode 100644 index 0000000000..2cb83c2e1d --- /dev/null +++ b/src/mod/codecs/mod_iSAC/lpc_to_refl_coef.c @@ -0,0 +1,57 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + + +/* + * This file contains the function WebRtcSpl_LpcToReflCoef(). + * The description header can be found in signal_processing_library.h + * + */ + +#include "signal_processing_library.h" + +#define SPL_LPC_TO_REFL_COEF_MAX_AR_MODEL_ORDER 50 + +void WebRtcSpl_LpcToReflCoef(WebRtc_Word16* a16, int use_order, WebRtc_Word16* k16) +{ + int m, k; + WebRtc_Word32 tmp32[SPL_LPC_TO_REFL_COEF_MAX_AR_MODEL_ORDER]; + WebRtc_Word32 tmp_inv_denom32; + WebRtc_Word16 tmp_inv_denom16; + + k16[use_order - 1] = WEBRTC_SPL_LSHIFT_W16(a16[use_order], 3); //Q12<<3 => Q15 + for (m = use_order - 1; m > 0; m--) + { + // (1 - k^2) in Q30 + tmp_inv_denom32 = ((WebRtc_Word32)1073741823) - WEBRTC_SPL_MUL_16_16(k16[m], k16[m]); + // (1 - k^2) in Q15 + tmp_inv_denom16 = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32(tmp_inv_denom32, 15); + + for (k = 1; k <= m; k++) + { + // tmp[k] = (a[k] - RC[m] * a[m-k+1]) / (1.0 - RC[m]*RC[m]); + + // [Q12<<16 - (Q15*Q12)<<1] = [Q28 - Q28] = Q28 + tmp32[k] = WEBRTC_SPL_LSHIFT_W32((WebRtc_Word32)a16[k], 16) + - WEBRTC_SPL_LSHIFT_W32(WEBRTC_SPL_MUL_16_16(k16[m], a16[m-k+1]), 1); + + tmp32[k] = WebRtcSpl_DivW32W16(tmp32[k], tmp_inv_denom16); //Q28/Q15 = Q13 + } + + for (k = 1; k < m; k++) + { + a16[k] = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32(tmp32[k], 1); //Q13>>1 => Q12 + } + + tmp32[m] = WEBRTC_SPL_SAT(8191, tmp32[m], -8191); + k16[m - 1] = (WebRtc_Word16)WEBRTC_SPL_LSHIFT_W32(tmp32[m], 2); //Q13<<2 => Q15 + } + return; +} diff --git a/src/mod/codecs/mod_iSAC/min_max_operations.c b/src/mod/codecs/mod_iSAC/min_max_operations.c new file mode 100644 index 0000000000..57eaff7b71 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/min_max_operations.c @@ -0,0 +1,265 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * This file contains the implementation of functions + * WebRtcSpl_MaxAbsValueW16() + * WebRtcSpl_MaxAbsIndexW16() + * WebRtcSpl_MaxAbsValueW32() + * WebRtcSpl_MaxValueW16() + * WebRtcSpl_MaxIndexW16() + * WebRtcSpl_MaxValueW32() + * WebRtcSpl_MaxIndexW32() + * WebRtcSpl_MinValueW16() + * WebRtcSpl_MinIndexW16() + * WebRtcSpl_MinValueW32() + * WebRtcSpl_MinIndexW32() + * + * The description header can be found in signal_processing_library.h. + * + */ + +#include "signal_processing_library.h" + +#if !(defined(WEBRTC_ANDROID) && defined(WEBRTC_ARCH_ARM_NEON)) + +// Maximum absolute value of word16 vector. +WebRtc_Word16 WebRtcSpl_MaxAbsValueW16(const WebRtc_Word16 *vector, WebRtc_Word16 length) +{ + WebRtc_Word32 tempMax = 0; + WebRtc_Word32 absVal; + WebRtc_Word16 totMax; + int i; + G_CONST WebRtc_Word16 *tmpvector = vector; + + for (i = 0; i < length; i++) + { + absVal = WEBRTC_SPL_ABS_W32((*tmpvector)); + if (absVal > tempMax) + { + tempMax = absVal; + } + tmpvector++; + } + totMax = (WebRtc_Word16)WEBRTC_SPL_MIN(tempMax, WEBRTC_SPL_WORD16_MAX); + return totMax; +} + +#endif + +// Index of maximum absolute value in a word16 vector. +WebRtc_Word16 WebRtcSpl_MaxAbsIndexW16(G_CONST WebRtc_Word16* vector, WebRtc_Word16 length) +{ + WebRtc_Word16 tempMax; + WebRtc_Word16 absTemp; + WebRtc_Word16 tempMaxIndex = 0; + WebRtc_Word16 i = 0; + G_CONST WebRtc_Word16 *tmpvector = vector; + + tempMax = WEBRTC_SPL_ABS_W16(*tmpvector); + tmpvector++; + for (i = 1; i < length; i++) + { + absTemp = WEBRTC_SPL_ABS_W16(*tmpvector); + tmpvector++; + if (absTemp > tempMax) + { + tempMax = absTemp; + tempMaxIndex = i; + } + } + return tempMaxIndex; +} + +// Maximum absolute value of word32 vector. +WebRtc_Word32 WebRtcSpl_MaxAbsValueW32(G_CONST WebRtc_Word32 *vector, WebRtc_Word16 length) +{ + WebRtc_UWord32 tempMax = 0; + WebRtc_UWord32 absVal; + WebRtc_Word32 retval; + int i; + G_CONST WebRtc_Word32 *tmpvector = vector; + + for (i = 0; i < length; i++) + { + absVal = WEBRTC_SPL_ABS_W32((*tmpvector)); + if (absVal > tempMax) + { + tempMax = absVal; + } + tmpvector++; + } + retval = (WebRtc_Word32)(WEBRTC_SPL_MIN(tempMax, WEBRTC_SPL_WORD32_MAX)); + return retval; +} + +// Maximum value of word16 vector. +#ifndef XSCALE_OPT +WebRtc_Word16 WebRtcSpl_MaxValueW16(G_CONST WebRtc_Word16* vector, WebRtc_Word16 length) +{ + WebRtc_Word16 tempMax; + WebRtc_Word16 i; + G_CONST WebRtc_Word16 *tmpvector = vector; + + tempMax = *tmpvector++; + for (i = 1; i < length; i++) + { + if (*tmpvector++ > tempMax) + tempMax = vector[i]; + } + return tempMax; +} +#else +#pragma message(">> WebRtcSpl_MaxValueW16 is excluded from this build") +#endif + +// Index of maximum value in a word16 vector. +WebRtc_Word16 WebRtcSpl_MaxIndexW16(G_CONST WebRtc_Word16 *vector, WebRtc_Word16 length) +{ + WebRtc_Word16 tempMax; + WebRtc_Word16 tempMaxIndex = 0; + WebRtc_Word16 i = 0; + G_CONST WebRtc_Word16 *tmpvector = vector; + + tempMax = *tmpvector++; + for (i = 1; i < length; i++) + { + if (*tmpvector++ > tempMax) + { + tempMax = vector[i]; + tempMaxIndex = i; + } + } + return tempMaxIndex; +} + +// Maximum value of word32 vector. +#ifndef XSCALE_OPT +WebRtc_Word32 WebRtcSpl_MaxValueW32(G_CONST WebRtc_Word32* vector, WebRtc_Word16 length) +{ + WebRtc_Word32 tempMax; + WebRtc_Word16 i; + G_CONST WebRtc_Word32 *tmpvector = vector; + + tempMax = *tmpvector++; + for (i = 1; i < length; i++) + { + if (*tmpvector++ > tempMax) + tempMax = vector[i]; + } + return tempMax; +} +#else +#pragma message(">> WebRtcSpl_MaxValueW32 is excluded from this build") +#endif + +// Index of maximum value in a word32 vector. +WebRtc_Word16 WebRtcSpl_MaxIndexW32(G_CONST WebRtc_Word32* vector, WebRtc_Word16 length) +{ + WebRtc_Word32 tempMax; + WebRtc_Word16 tempMaxIndex = 0; + WebRtc_Word16 i = 0; + G_CONST WebRtc_Word32 *tmpvector = vector; + + tempMax = *tmpvector++; + for (i = 1; i < length; i++) + { + if (*tmpvector++ > tempMax) + { + tempMax = vector[i]; + tempMaxIndex = i; + } + } + return tempMaxIndex; +} + +// Minimum value of word16 vector. +WebRtc_Word16 WebRtcSpl_MinValueW16(G_CONST WebRtc_Word16 *vector, WebRtc_Word16 length) +{ + WebRtc_Word16 tempMin; + WebRtc_Word16 i; + G_CONST WebRtc_Word16 *tmpvector = vector; + + // Find the minimum value + tempMin = *tmpvector++; + for (i = 1; i < length; i++) + { + if (*tmpvector++ < tempMin) + tempMin = (vector[i]); + } + return tempMin; +} + +// Index of minimum value in a word16 vector. +#ifndef XSCALE_OPT +WebRtc_Word16 WebRtcSpl_MinIndexW16(G_CONST WebRtc_Word16* vector, WebRtc_Word16 length) +{ + WebRtc_Word16 tempMin; + WebRtc_Word16 tempMinIndex = 0; + WebRtc_Word16 i = 0; + G_CONST WebRtc_Word16* tmpvector = vector; + + // Find index of smallest value + tempMin = *tmpvector++; + for (i = 1; i < length; i++) + { + if (*tmpvector++ < tempMin) + { + tempMin = vector[i]; + tempMinIndex = i; + } + } + return tempMinIndex; +} +#else +#pragma message(">> WebRtcSpl_MinIndexW16 is excluded from this build") +#endif + +// Minimum value of word32 vector. +WebRtc_Word32 WebRtcSpl_MinValueW32(G_CONST WebRtc_Word32 *vector, WebRtc_Word16 length) +{ + WebRtc_Word32 tempMin; + WebRtc_Word16 i; + G_CONST WebRtc_Word32 *tmpvector = vector; + + // Find the minimum value + tempMin = *tmpvector++; + for (i = 1; i < length; i++) + { + if (*tmpvector++ < tempMin) + tempMin = (vector[i]); + } + return tempMin; +} + +// Index of minimum value in a word32 vector. +#ifndef XSCALE_OPT +WebRtc_Word16 WebRtcSpl_MinIndexW32(G_CONST WebRtc_Word32* vector, WebRtc_Word16 length) +{ + WebRtc_Word32 tempMin; + WebRtc_Word16 tempMinIndex = 0; + WebRtc_Word16 i = 0; + G_CONST WebRtc_Word32 *tmpvector = vector; + + // Find index of smallest value + tempMin = *tmpvector++; + for (i = 1; i < length; i++) + { + if (*tmpvector++ < tempMin) + { + tempMin = vector[i]; + tempMinIndex = i; + } + } + return tempMinIndex; +} +#else +#pragma message(">> WebRtcSpl_MinIndexW32 is excluded from this build") +#endif diff --git a/src/mod/codecs/mod_iSAC/min_max_operations_neon.c b/src/mod/codecs/mod_iSAC/min_max_operations_neon.c new file mode 100644 index 0000000000..158bcc1837 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/min_max_operations_neon.c @@ -0,0 +1,47 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#if (defined(WEBRTC_ANDROID) && defined(WEBRTC_ARCH_ARM_NEON)) + +#include + +#include "signal_processing_library.h" + +// Maximum absolute value of word16 vector. +WebRtc_Word16 WebRtcSpl_MaxAbsValueW16(const WebRtc_Word16* vector, + WebRtc_Word16 length) { + WebRtc_Word32 temp_max = 0; + WebRtc_Word32 abs_val; + WebRtc_Word16 tot_max; + int i; + + __asm__("vmov.i16 d25, #0" : : : "d25"); + + for (i = 0; i < length - 7; i += 8) { + __asm__("vld1.16 {d26, d27}, [%0]" : : "r"(&vector[i]) : "q13"); + __asm__("vabs.s16 q13, q13" : : : "q13"); + __asm__("vpmax.s16 d26, d27" : : : "q13"); + __asm__("vpmax.s16 d25, d26" : : : "d25", "d26"); + } + __asm__("vpmax.s16 d25, d25" : : : "d25"); + __asm__("vpmax.s16 d25, d25" : : : "d25"); + __asm__("vmov.s16 %0, d25[0]" : "=r"(temp_max): : "d25"); + + for (; i < length; i++) { + abs_val = WEBRTC_SPL_ABS_W32((vector[i])); + if (abs_val > temp_max) { + temp_max = abs_val; + } + } + tot_max = (WebRtc_Word16)WEBRTC_SPL_MIN(temp_max, WEBRTC_SPL_WORD16_MAX); + return tot_max; +} + +#endif diff --git a/src/mod/codecs/mod_iSAC/mod_iSAC.c b/src/mod/codecs/mod_iSAC/mod_iSAC.c new file mode 100644 index 0000000000..fa88e95c56 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/mod_iSAC.c @@ -0,0 +1,257 @@ +/* + * FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application + * Copyright (C) 2005-2011, Anthony Minessale II + * + * Version: MPL 1.1 + * + * The contents of this file are subject to the Mozilla Public License Version + * 1.1 (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * http://www.mozilla.org/MPL/ + * + * Software distributed under the License is distributed on an "AS IS" basis, + * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License + * for the specific language governing rights and limitations under the + * License. + * + * The Original Code is FreeSWITCH Modular Media Switching Software Library / ISAC codec module + * + * The Initial Developer of the Original Code is + * Anthony Minessale II + * Portions created by the Initial Developer are Copyright (C) + * the Initial Developer. All Rights Reserved. + * + * Contributor(s): + * Anthony Minessale II + * + * + * mod_iSAC.c -- iSAC Codec Module + * + */ + +#include +#include "isac.h" + +SWITCH_MODULE_LOAD_FUNCTION(mod_iSAC_codec_load); +SWITCH_MODULE_DEFINITION(mod_iSAC, mod_iSAC_codec_load, NULL, NULL); + +struct iSAC_context { + ISACStruct *ISAC_main_inst; +}; + +static switch_status_t switch_iSAC_init(switch_codec_t *codec, switch_codec_flag_t flags, const switch_codec_settings_t *codec_settings) +{ + uint32_t encoding, decoding; + WebRtc_Word16 err; + struct iSAC_context *context = NULL; + + encoding = (flags & SWITCH_CODEC_FLAG_ENCODE); + decoding = (flags & SWITCH_CODEC_FLAG_DECODE); + + if (!(encoding || decoding)) { + return SWITCH_STATUS_FALSE; + } + + if (!(context = switch_core_alloc(codec->memory_pool, sizeof(*context)))) { + return SWITCH_STATUS_FALSE; + } + + codec->private_info = context; + + err = WebRtcIsac_Create(&context->ISAC_main_inst); + + if (err < 0) return SWITCH_STATUS_FALSE; + + WebRtcIsac_SetEncSampRate(context->ISAC_main_inst, codec->implementation->actual_samples_per_second / 1000); + WebRtcIsac_SetDecSampRate(context->ISAC_main_inst, codec->implementation->actual_samples_per_second / 1000); + + if (encoding) { + if (WebRtcIsac_EncoderInit(context->ISAC_main_inst, 0) < 0) { + return SWITCH_STATUS_FALSE; + } + } + + if (decoding) { + if (WebRtcIsac_DecoderInit(context->ISAC_main_inst) < 0) { + return SWITCH_STATUS_FALSE; + } + } + + if (codec->implementation->actual_samples_per_second == 16000) { + if (WebRtcIsac_ControlBwe(context->ISAC_main_inst, 0, codec->implementation->microseconds_per_packet / 1000, 0) < 0) { + return SWITCH_STATUS_FALSE; + } + } else { + if (WebRtcIsac_Control(context->ISAC_main_inst, codec->implementation->actual_samples_per_second / 1000, + codec->implementation->microseconds_per_packet / 1000) < 0) { + return SWITCH_STATUS_FALSE; + } + } + + if (WebRtcIsac_SetMaxPayloadSize(context->ISAC_main_inst, SWITCH_RECOMMENDED_BUFFER_SIZE) < 0) { + return SWITCH_STATUS_FALSE; + } + + if (WebRtcIsac_SetMaxRate(context->ISAC_main_inst, codec->implementation->bits_per_second) < 0) { + return SWITCH_STATUS_FALSE; + } + + + return SWITCH_STATUS_SUCCESS; +} + +static switch_status_t switch_iSAC_encode(switch_codec_t *codec, switch_codec_t *other_codec, + void *decoded_data, + uint32_t decoded_data_len, + uint32_t decoded_rate, + void *encoded_data, + uint32_t *encoded_data_len, + uint32_t *encoded_rate, + unsigned int *flag) +{ + struct iSAC_context *context = codec->private_info; + WebRtc_Word16 len = 0, *in, *out; + int rise = (codec->implementation->actual_samples_per_second / 100); + + in = decoded_data; + out = encoded_data; + + while(len == 0) { + len = WebRtcIsac_Encode(context->ISAC_main_inst, in, out); + in += rise; + } + + if (len < 0) { + return SWITCH_STATUS_GENERR; + } + + *encoded_data_len = (uint32_t) len; + + return SWITCH_STATUS_SUCCESS; +} + +static switch_status_t switch_iSAC_decode(switch_codec_t *codec, + switch_codec_t *other_codec, + void *encoded_data, + uint32_t encoded_data_len, + uint32_t encoded_rate, + void *decoded_data, + uint32_t *decoded_data_len, + uint32_t *decoded_rate, + unsigned int *flag) +{ + struct iSAC_context *context = codec->private_info; + WebRtc_Word16 len, speechType[1]; + + if ((*flag & SFF_PLC)) { + len = WebRtcIsac_DecodePlc(context->ISAC_main_inst, decoded_data, 1); + } else { + len = WebRtcIsac_Decode(context->ISAC_main_inst, encoded_data, encoded_data_len, decoded_data, speechType); + } + + if (len < 0) { + *decoded_data_len = 0; + return SWITCH_STATUS_GENERR; + } + + *decoded_data_len = (uint32_t) len * 2; + + return SWITCH_STATUS_SUCCESS; +} + +static switch_status_t switch_iSAC_destroy(switch_codec_t *codec) +{ + struct iSAC_context *context = codec->private_info; + + WebRtcIsac_Free(context->ISAC_main_inst); + + return SWITCH_STATUS_SUCCESS; +} + + +SWITCH_MODULE_LOAD_FUNCTION(mod_iSAC_codec_load) +{ + switch_codec_interface_t *codec_interface; + + *module_interface = switch_loadable_module_create_module_interface(pool, modname); + + SWITCH_ADD_CODEC(codec_interface, "iSAC"); /* 8.0kbit */ + + switch_core_codec_add_implementation(pool, codec_interface, + SWITCH_CODEC_TYPE_AUDIO, + 99, + "iSAC", + NULL, + 16000, + 16000, + 53400, + 30000, + 480, + 960, + 0, + 1, + 3, + switch_iSAC_init, + switch_iSAC_encode, + switch_iSAC_decode, + switch_iSAC_destroy); + + + + switch_core_codec_add_implementation(pool, codec_interface, + SWITCH_CODEC_TYPE_AUDIO, + 99, + "iSAC", + NULL, + 16000, + 16000, + 53400, + 60000, + 960, + 1920, + 0, + 1, + 6, + switch_iSAC_init, + switch_iSAC_encode, + switch_iSAC_decode, + switch_iSAC_destroy); + + + + + switch_core_codec_add_implementation(pool, codec_interface, + SWITCH_CODEC_TYPE_AUDIO, + 99, + "iSAC", + NULL, + 32000, + 32000, + 160000, + 30000, + 960, + 1920, + 0, + 1, + 6, + switch_iSAC_init, + switch_iSAC_encode, + switch_iSAC_decode, + switch_iSAC_destroy); + + + + /* indicate that the module should continue to be loaded */ + return SWITCH_STATUS_SUCCESS; +} + +/* For Emacs: + * Local Variables: + * mode:c + * indent-tabs-mode:t + * tab-width:4 + * c-basic-offset:4 + * End: + * For VIM: + * vim:set softtabstop=4 shiftwidth=4 tabstop=4: + */ diff --git a/src/mod/codecs/mod_iSAC/os_specific_inline.h b/src/mod/codecs/mod_iSAC/os_specific_inline.h new file mode 100644 index 0000000000..c469c2ec9c --- /dev/null +++ b/src/mod/codecs/mod_iSAC/os_specific_inline.h @@ -0,0 +1,42 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + + +#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_OS_SPECIFIC_INLINE_H_ +#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_OS_SPECIFIC_INLINE_H_ + +#include +#include "typedefs.h" + +// TODO(turaj): switch to WEBRTC_POSIX when available +#if defined(WEBRTC_LINUX) || defined(WEBRTC_MAC) +#define WebRtcIsac_lrint lrint +#elif (defined(WEBRTC_ARCH_X86) && defined(WIN32)) +static __inline long int WebRtcIsac_lrint(double x_dbl) { + long int x_int; + + __asm { + fld x_dbl + fistp x_int + }; + + return x_int; +} +#else // Do a slow but correct implementation of lrint + +static __inline long int WebRtcIsac_lrint(double x_dbl) { + long int x_int; + x_int = (long int)floor(x_dbl + 0.499999999999); + return x_int; +} + +#endif + +#endif // WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_OS_SPECIFIC_INLINE_H_ diff --git a/src/mod/codecs/mod_iSAC/pitch_estimator.c b/src/mod/codecs/mod_iSAC/pitch_estimator.c new file mode 100644 index 0000000000..75525f69d4 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/pitch_estimator.c @@ -0,0 +1,622 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#include "pitch_estimator.h" + +#include +#include +#ifdef WEBRTC_ANDROID +#include +#endif + +static const double kInterpolWin[8] = {-0.00067556028640, 0.02184247643159, -0.12203175715679, 0.60086484101160, + 0.60086484101160, -0.12203175715679, 0.02184247643159, -0.00067556028640}; + +/* interpolation filter */ +__inline static void IntrepolFilter(double *data_ptr, double *intrp) +{ + *intrp = kInterpolWin[0] * data_ptr[-3]; + *intrp += kInterpolWin[1] * data_ptr[-2]; + *intrp += kInterpolWin[2] * data_ptr[-1]; + *intrp += kInterpolWin[3] * data_ptr[0]; + *intrp += kInterpolWin[4] * data_ptr[1]; + *intrp += kInterpolWin[5] * data_ptr[2]; + *intrp += kInterpolWin[6] * data_ptr[3]; + *intrp += kInterpolWin[7] * data_ptr[4]; +} + + +/* 2D parabolic interpolation */ +/* probably some 0.5 factors can be eliminated, and the square-roots can be removed from the Cholesky fact. */ +__inline static void Intrpol2D(double T[3][3], double *x, double *y, double *peak_val) +{ + double c, b[2], A[2][2]; + double t1, t2, d; + double delta1, delta2; + + + // double T[3][3] = {{-1.25, -.25,-.25}, {-.25, .75, .75}, {-.25, .75, .75}}; + // should result in: delta1 = 0.5; delta2 = 0.0; peak_val = 1.0 + + c = T[1][1]; + b[0] = 0.5 * (T[1][2] + T[2][1] - T[0][1] - T[1][0]); + b[1] = 0.5 * (T[1][0] + T[2][1] - T[0][1] - T[1][2]); + A[0][1] = -0.5 * (T[0][1] + T[2][1] - T[1][0] - T[1][2]); + t1 = 0.5 * (T[0][0] + T[2][2]) - c; + t2 = 0.5 * (T[2][0] + T[0][2]) - c; + d = (T[0][1] + T[1][2] + T[1][0] + T[2][1]) - 4.0 * c - t1 - t2; + A[0][0] = -t1 - 0.5 * d; + A[1][1] = -t2 - 0.5 * d; + + /* deal with singularities or ill-conditioned cases */ + if ( (A[0][0] < 1e-7) || ((A[0][0] * A[1][1] - A[0][1] * A[0][1]) < 1e-7) ) { + *peak_val = T[1][1]; + return; + } + + /* Cholesky decomposition: replace A by upper-triangular factor */ + A[0][0] = sqrt(A[0][0]); + A[0][1] = A[0][1] / A[0][0]; + A[1][1] = sqrt(A[1][1] - A[0][1] * A[0][1]); + + /* compute [x; y] = -0.5 * inv(A) * b */ + t1 = b[0] / A[0][0]; + t2 = (b[1] - t1 * A[0][1]) / A[1][1]; + delta2 = t2 / A[1][1]; + delta1 = 0.5 * (t1 - delta2 * A[0][1]) / A[0][0]; + delta2 *= 0.5; + + /* limit norm */ + t1 = delta1 * delta1 + delta2 * delta2; + if (t1 > 1.0) { + delta1 /= t1; + delta2 /= t1; + } + + *peak_val = 0.5 * (b[0] * delta1 + b[1] * delta2) + c; + + *x += delta1; + *y += delta2; +} + + +static void PCorr(const double *in, double *outcorr) +{ + double sum, ysum, prod; + const double *x, *inptr; + int k, n; + + //ysum = 1e-6; /* use this with float (i.s.o. double)! */ + ysum = 1e-13; + sum = 0.0; + x = in + PITCH_MAX_LAG/2 + 2; + for (n = 0; n < PITCH_CORR_LEN2; n++) { + ysum += in[n] * in[n]; + sum += x[n] * in[n]; + } + + outcorr += PITCH_LAG_SPAN2 - 1; /* index of last element in array */ + *outcorr = sum / sqrt(ysum); + + for (k = 1; k < PITCH_LAG_SPAN2; k++) { + ysum -= in[k-1] * in[k-1]; + ysum += in[PITCH_CORR_LEN2 + k - 1] * in[PITCH_CORR_LEN2 + k - 1]; + sum = 0.0; + inptr = &in[k]; + prod = x[0] * inptr[0]; + for (n = 1; n < PITCH_CORR_LEN2; n++) { + sum += prod; + prod = x[n] * inptr[n]; + } + sum += prod; + outcorr--; + *outcorr = sum / sqrt(ysum); + } +} + + +void WebRtcIsac_InitializePitch(const double *in, + const double old_lag, + const double old_gain, + PitchAnalysisStruct *State, + double *lags) +{ + double buf_dec[PITCH_CORR_LEN2+PITCH_CORR_STEP2+PITCH_MAX_LAG/2+2]; + double ratio, log_lag, gain_bias; + double bias; + double corrvec1[PITCH_LAG_SPAN2]; + double corrvec2[PITCH_LAG_SPAN2]; + int m, k; + // Allocating 10 extra entries at the begining of the CorrSurf + double corrSurfBuff[10 + (2*PITCH_BW+3)*(PITCH_LAG_SPAN2+4)]; + double* CorrSurf[2*PITCH_BW+3]; + double *CorrSurfPtr1, *CorrSurfPtr2; + double LagWin[3] = {0.2, 0.5, 0.98}; + int ind1, ind2, peaks_ind, peak, max_ind; + int peaks[PITCH_MAX_NUM_PEAKS]; + double adj, gain_tmp; + double corr, corr_max; + double intrp_a, intrp_b, intrp_c, intrp_d; + double peak_vals[PITCH_MAX_NUM_PEAKS]; + double lags1[PITCH_MAX_NUM_PEAKS]; + double lags2[PITCH_MAX_NUM_PEAKS]; + double T[3][3]; + int row; + + for(k = 0; k < 2*PITCH_BW+3; k++) + { + CorrSurf[k] = &corrSurfBuff[10 + k * (PITCH_LAG_SPAN2+4)]; + } + /* reset CorrSurf matrix */ + memset(corrSurfBuff, 0, sizeof(double) * (10 + (2*PITCH_BW+3) * (PITCH_LAG_SPAN2+4))); + + //warnings -DH + max_ind = 0; + peak = 0; + + /* copy old values from state buffer */ + memcpy(buf_dec, State->dec_buffer, sizeof(double) * (PITCH_CORR_LEN2+PITCH_CORR_STEP2+PITCH_MAX_LAG/2-PITCH_FRAME_LEN/2+2)); + + /* decimation; put result after the old values */ + WebRtcIsac_DecimateAllpass(in, State->decimator_state, PITCH_FRAME_LEN, + &buf_dec[PITCH_CORR_LEN2+PITCH_CORR_STEP2+PITCH_MAX_LAG/2-PITCH_FRAME_LEN/2+2]); + + /* low-pass filtering */ + for (k = PITCH_CORR_LEN2+PITCH_CORR_STEP2+PITCH_MAX_LAG/2-PITCH_FRAME_LEN/2+2; k < PITCH_CORR_LEN2+PITCH_CORR_STEP2+PITCH_MAX_LAG/2+2; k++) + buf_dec[k] += 0.75 * buf_dec[k-1] - 0.25 * buf_dec[k-2]; + + /* copy end part back into state buffer */ + memcpy(State->dec_buffer, buf_dec+PITCH_FRAME_LEN/2, sizeof(double) * (PITCH_CORR_LEN2+PITCH_CORR_STEP2+PITCH_MAX_LAG/2-PITCH_FRAME_LEN/2+2)); + + /* compute correlation for first and second half of the frame */ + PCorr(buf_dec, corrvec1); + PCorr(buf_dec + PITCH_CORR_STEP2, corrvec2); + + /* bias towards pitch lag of previous frame */ + log_lag = log(0.5 * old_lag); + gain_bias = 4.0 * old_gain * old_gain; + if (gain_bias > 0.8) gain_bias = 0.8; + for (k = 0; k < PITCH_LAG_SPAN2; k++) + { + ratio = log((double) (k + (PITCH_MIN_LAG/2-2))) - log_lag; + bias = 1.0 + gain_bias * exp(-5.0 * ratio * ratio); + corrvec1[k] *= bias; + } + + /* taper correlation functions */ + for (k = 0; k < 3; k++) { + gain_tmp = LagWin[k]; + corrvec1[k] *= gain_tmp; + corrvec2[k] *= gain_tmp; + corrvec1[PITCH_LAG_SPAN2-1-k] *= gain_tmp; + corrvec2[PITCH_LAG_SPAN2-1-k] *= gain_tmp; + } + + corr_max = 0.0; + /* fill middle row of correlation surface */ + ind1 = 0; + ind2 = 0; + CorrSurfPtr1 = &CorrSurf[PITCH_BW][2]; + for (k = 0; k < PITCH_LAG_SPAN2; k++) { + corr = corrvec1[ind1++] + corrvec2[ind2++]; + CorrSurfPtr1[k] = corr; + if (corr > corr_max) { + corr_max = corr; /* update maximum */ + max_ind = (int)(&CorrSurfPtr1[k] - &CorrSurf[0][0]); + } + } + /* fill first and last rows of correlation surface */ + ind1 = 0; + ind2 = PITCH_BW; + CorrSurfPtr1 = &CorrSurf[0][2]; + CorrSurfPtr2 = &CorrSurf[2*PITCH_BW][PITCH_BW+2]; + for (k = 0; k < PITCH_LAG_SPAN2-PITCH_BW; k++) { + ratio = ((double) (ind1 + 12)) / ((double) (ind2 + 12)); + adj = 0.2 * ratio * (2.0 - ratio); /* adjustment factor; inverse parabola as a function of ratio */ + corr = adj * (corrvec1[ind1] + corrvec2[ind2]); + CorrSurfPtr1[k] = corr; + if (corr > corr_max) { + corr_max = corr; /* update maximum */ + max_ind = (int)(&CorrSurfPtr1[k] - &CorrSurf[0][0]); + } + corr = adj * (corrvec1[ind2++] + corrvec2[ind1++]); + CorrSurfPtr2[k] = corr; + if (corr > corr_max) { + corr_max = corr; /* update maximum */ + max_ind = (int)(&CorrSurfPtr2[k] - &CorrSurf[0][0]); + } + } + /* fill second and next to last rows of correlation surface */ + ind1 = 0; + ind2 = PITCH_BW-1; + CorrSurfPtr1 = &CorrSurf[1][2]; + CorrSurfPtr2 = &CorrSurf[2*PITCH_BW-1][PITCH_BW+1]; + for (k = 0; k < PITCH_LAG_SPAN2-PITCH_BW+1; k++) { + ratio = ((double) (ind1 + 12)) / ((double) (ind2 + 12)); + adj = 0.9 * ratio * (2.0 - ratio); /* adjustment factor; inverse parabola as a function of ratio */ + corr = adj * (corrvec1[ind1] + corrvec2[ind2]); + CorrSurfPtr1[k] = corr; + if (corr > corr_max) { + corr_max = corr; /* update maximum */ + max_ind = (int)(&CorrSurfPtr1[k] - &CorrSurf[0][0]); + } + corr = adj * (corrvec1[ind2++] + corrvec2[ind1++]); + CorrSurfPtr2[k] = corr; + if (corr > corr_max) { + corr_max = corr; /* update maximum */ + max_ind = (int)(&CorrSurfPtr2[k] - &CorrSurf[0][0]); + } + } + /* fill remainder of correlation surface */ + for (m = 2; m < PITCH_BW; m++) { + ind1 = 0; + ind2 = PITCH_BW - m; /* always larger than ind1 */ + CorrSurfPtr1 = &CorrSurf[m][2]; + CorrSurfPtr2 = &CorrSurf[2*PITCH_BW-m][PITCH_BW+2-m]; + for (k = 0; k < PITCH_LAG_SPAN2-PITCH_BW+m; k++) { + ratio = ((double) (ind1 + 12)) / ((double) (ind2 + 12)); + adj = ratio * (2.0 - ratio); /* adjustment factor; inverse parabola as a function of ratio */ + corr = adj * (corrvec1[ind1] + corrvec2[ind2]); + CorrSurfPtr1[k] = corr; + if (corr > corr_max) { + corr_max = corr; /* update maximum */ + max_ind = (int)(&CorrSurfPtr1[k] - &CorrSurf[0][0]); + } + corr = adj * (corrvec1[ind2++] + corrvec2[ind1++]); + CorrSurfPtr2[k] = corr; + if (corr > corr_max) { + corr_max = corr; /* update maximum */ + max_ind = (int)(&CorrSurfPtr2[k] - &CorrSurf[0][0]); + } + } + } + + /* threshold value to qualify as a peak */ + corr_max *= 0.6; + + peaks_ind = 0; + /* find peaks */ + for (m = 1; m < PITCH_BW+1; m++) { + if (peaks_ind == PITCH_MAX_NUM_PEAKS) break; + CorrSurfPtr1 = &CorrSurf[m][2]; + for (k = 2; k < PITCH_LAG_SPAN2-PITCH_BW-2+m; k++) { + corr = CorrSurfPtr1[k]; + if (corr > corr_max) { + if ( (corr > CorrSurfPtr1[k - (PITCH_LAG_SPAN2+5)]) && (corr > CorrSurfPtr1[k - (PITCH_LAG_SPAN2+4)]) ) { + if ( (corr > CorrSurfPtr1[k + (PITCH_LAG_SPAN2+4)]) && (corr > CorrSurfPtr1[k + (PITCH_LAG_SPAN2+5)]) ) { + /* found a peak; store index into matrix */ + peaks[peaks_ind++] = (int)(&CorrSurfPtr1[k] - &CorrSurf[0][0]); + if (peaks_ind == PITCH_MAX_NUM_PEAKS) break; + } + } + } + } + } + for (m = PITCH_BW+1; m < 2*PITCH_BW; m++) { + if (peaks_ind == PITCH_MAX_NUM_PEAKS) break; + CorrSurfPtr1 = &CorrSurf[m][2]; + for (k = 2+m-PITCH_BW; k < PITCH_LAG_SPAN2-2; k++) { + corr = CorrSurfPtr1[k]; + if (corr > corr_max) { + if ( (corr > CorrSurfPtr1[k - (PITCH_LAG_SPAN2+5)]) && (corr > CorrSurfPtr1[k - (PITCH_LAG_SPAN2+4)]) ) { + if ( (corr > CorrSurfPtr1[k + (PITCH_LAG_SPAN2+4)]) && (corr > CorrSurfPtr1[k + (PITCH_LAG_SPAN2+5)]) ) { + /* found a peak; store index into matrix */ + peaks[peaks_ind++] = (int)(&CorrSurfPtr1[k] - &CorrSurf[0][0]); + if (peaks_ind == PITCH_MAX_NUM_PEAKS) break; + } + } + } + } + } + + if (peaks_ind > 0) { + /* examine each peak */ + CorrSurfPtr1 = &CorrSurf[0][0]; + for (k = 0; k < peaks_ind; k++) { + peak = peaks[k]; + + /* compute four interpolated values around current peak */ + IntrepolFilter(&CorrSurfPtr1[peak - (PITCH_LAG_SPAN2+5)], &intrp_a); + IntrepolFilter(&CorrSurfPtr1[peak - 1 ], &intrp_b); + IntrepolFilter(&CorrSurfPtr1[peak ], &intrp_c); + IntrepolFilter(&CorrSurfPtr1[peak + (PITCH_LAG_SPAN2+4)], &intrp_d); + + /* determine maximum of the interpolated values */ + corr = CorrSurfPtr1[peak]; + corr_max = intrp_a; + if (intrp_b > corr_max) corr_max = intrp_b; + if (intrp_c > corr_max) corr_max = intrp_c; + if (intrp_d > corr_max) corr_max = intrp_d; + + /* determine where the peak sits and fill a 3x3 matrix around it */ + row = peak / (PITCH_LAG_SPAN2+4); + lags1[k] = (double) ((peak - row * (PITCH_LAG_SPAN2+4)) + PITCH_MIN_LAG/2 - 4); + lags2[k] = (double) (lags1[k] + PITCH_BW - row); + if ( corr > corr_max ) { + T[0][0] = CorrSurfPtr1[peak - (PITCH_LAG_SPAN2+5)]; + T[2][0] = CorrSurfPtr1[peak - (PITCH_LAG_SPAN2+4)]; + T[1][1] = corr; + T[0][2] = CorrSurfPtr1[peak + (PITCH_LAG_SPAN2+4)]; + T[2][2] = CorrSurfPtr1[peak + (PITCH_LAG_SPAN2+5)]; + T[1][0] = intrp_a; + T[0][1] = intrp_b; + T[2][1] = intrp_c; + T[1][2] = intrp_d; + } else { + if (intrp_a == corr_max) { + lags1[k] -= 0.5; + lags2[k] += 0.5; + IntrepolFilter(&CorrSurfPtr1[peak - 2*(PITCH_LAG_SPAN2+5)], &T[0][0]); + IntrepolFilter(&CorrSurfPtr1[peak - (2*PITCH_LAG_SPAN2+9)], &T[2][0]); + T[1][1] = intrp_a; + T[0][2] = intrp_b; + T[2][2] = intrp_c; + T[1][0] = CorrSurfPtr1[peak - (2*PITCH_LAG_SPAN2+9)]; + T[0][1] = CorrSurfPtr1[peak - (PITCH_LAG_SPAN2+5)]; + T[2][1] = CorrSurfPtr1[peak - (PITCH_LAG_SPAN2+4)]; + T[1][2] = corr; + } else if (intrp_b == corr_max) { + lags1[k] -= 0.5; + lags2[k] -= 0.5; + IntrepolFilter(&CorrSurfPtr1[peak - (PITCH_LAG_SPAN2+6)], &T[0][0]); + T[2][0] = intrp_a; + T[1][1] = intrp_b; + IntrepolFilter(&CorrSurfPtr1[peak + (PITCH_LAG_SPAN2+3)], &T[0][2]); + T[2][2] = intrp_d; + T[1][0] = CorrSurfPtr1[peak - (PITCH_LAG_SPAN2+5)]; + T[0][1] = CorrSurfPtr1[peak - 1]; + T[2][1] = corr; + T[1][2] = CorrSurfPtr1[peak + (PITCH_LAG_SPAN2+4)]; + } else if (intrp_c == corr_max) { + lags1[k] += 0.5; + lags2[k] += 0.5; + T[0][0] = intrp_a; + IntrepolFilter(&CorrSurfPtr1[peak - (PITCH_LAG_SPAN2+4)], &T[2][0]); + T[1][1] = intrp_c; + T[0][2] = intrp_d; + IntrepolFilter(&CorrSurfPtr1[peak + (PITCH_LAG_SPAN2+5)], &T[2][2]); + T[1][0] = CorrSurfPtr1[peak - (PITCH_LAG_SPAN2+4)]; + T[0][1] = corr; + T[2][1] = CorrSurfPtr1[peak + 1]; + T[1][2] = CorrSurfPtr1[peak + (PITCH_LAG_SPAN2+5)]; + } else { + lags1[k] += 0.5; + lags2[k] -= 0.5; + T[0][0] = intrp_b; + T[2][0] = intrp_c; + T[1][1] = intrp_d; + IntrepolFilter(&CorrSurfPtr1[peak + 2*(PITCH_LAG_SPAN2+4)], &T[0][2]); + IntrepolFilter(&CorrSurfPtr1[peak + (2*PITCH_LAG_SPAN2+9)], &T[2][2]); + T[1][0] = corr; + T[0][1] = CorrSurfPtr1[peak + (PITCH_LAG_SPAN2+4)]; + T[2][1] = CorrSurfPtr1[peak + (PITCH_LAG_SPAN2+5)]; + T[1][2] = CorrSurfPtr1[peak + (2*PITCH_LAG_SPAN2+9)]; + } + } + + /* 2D parabolic interpolation gives more accurate lags and peak value */ + Intrpol2D(T, &lags1[k], &lags2[k], &peak_vals[k]); + } + + /* determine the highest peak, after applying a bias towards short lags */ + corr_max = 0.0; + for (k = 0; k < peaks_ind; k++) { + corr = peak_vals[k] * pow(PITCH_PEAK_DECAY, log(lags1[k] + lags2[k])); + if (corr > corr_max) { + corr_max = corr; + peak = k; + } + } + + lags1[peak] *= 2.0; + lags2[peak] *= 2.0; + + if (lags1[peak] < (double) PITCH_MIN_LAG) lags1[peak] = (double) PITCH_MIN_LAG; + if (lags2[peak] < (double) PITCH_MIN_LAG) lags2[peak] = (double) PITCH_MIN_LAG; + if (lags1[peak] > (double) PITCH_MAX_LAG) lags1[peak] = (double) PITCH_MAX_LAG; + if (lags2[peak] > (double) PITCH_MAX_LAG) lags2[peak] = (double) PITCH_MAX_LAG; + + /* store lags of highest peak in output array */ + lags[0] = lags1[peak]; + lags[1] = lags1[peak]; + lags[2] = lags2[peak]; + lags[3] = lags2[peak]; + } + else + { + row = max_ind / (PITCH_LAG_SPAN2+4); + lags1[0] = (double) ((max_ind - row * (PITCH_LAG_SPAN2+4)) + PITCH_MIN_LAG/2 - 4); + lags2[0] = (double) (lags1[0] + PITCH_BW - row); + + if (lags1[0] < (double) PITCH_MIN_LAG) lags1[0] = (double) PITCH_MIN_LAG; + if (lags2[0] < (double) PITCH_MIN_LAG) lags2[0] = (double) PITCH_MIN_LAG; + if (lags1[0] > (double) PITCH_MAX_LAG) lags1[0] = (double) PITCH_MAX_LAG; + if (lags2[0] > (double) PITCH_MAX_LAG) lags2[0] = (double) PITCH_MAX_LAG; + + /* store lags of highest peak in output array */ + lags[0] = lags1[0]; + lags[1] = lags1[0]; + lags[2] = lags2[0]; + lags[3] = lags2[0]; + } +} + + + +/* create weighting matrix by orthogonalizing a basis of polynomials of increasing order + * t = (0:4)'; + * A = [t.^0, t.^1, t.^2, t.^3, t.^4]; + * [Q, dummy] = qr(A); + * P.Weight = Q * diag([0, .1, .5, 1, 1]) * Q'; */ +static const double kWeight[5][5] = { + { 0.29714285714286, -0.30857142857143, -0.05714285714286, 0.05142857142857, 0.01714285714286}, + {-0.30857142857143, 0.67428571428571, -0.27142857142857, -0.14571428571429, 0.05142857142857}, + {-0.05714285714286, -0.27142857142857, 0.65714285714286, -0.27142857142857, -0.05714285714286}, + { 0.05142857142857, -0.14571428571429, -0.27142857142857, 0.67428571428571, -0.30857142857143}, + { 0.01714285714286, 0.05142857142857, -0.05714285714286, -0.30857142857143, 0.29714285714286} +}; + + +void WebRtcIsac_PitchAnalysis(const double *in, /* PITCH_FRAME_LEN samples */ + double *out, /* PITCH_FRAME_LEN+QLOOKAHEAD samples */ + PitchAnalysisStruct *State, + double *lags, + double *gains) +{ + double HPin[PITCH_FRAME_LEN]; + double Weighted[PITCH_FRAME_LEN]; + double Whitened[PITCH_FRAME_LEN + QLOOKAHEAD]; + double inbuf[PITCH_FRAME_LEN + QLOOKAHEAD]; + double out_G[PITCH_FRAME_LEN + QLOOKAHEAD]; // could be removed by using out instead + double out_dG[4][PITCH_FRAME_LEN + QLOOKAHEAD]; + double old_lag, old_gain; + double nrg_wht, tmp; + double Wnrg, Wfluct, Wgain; + double H[4][4]; + double grad[4]; + double dG[4]; + int k, m, n, iter; + + /* high pass filtering using second order pole-zero filter */ + WebRtcIsac_Highpass(in, HPin, State->hp_state, PITCH_FRAME_LEN); + + /* copy from state into buffer */ + memcpy(Whitened, State->whitened_buf, sizeof(double) * QLOOKAHEAD); + + /* compute weighted and whitened signals */ + WebRtcIsac_WeightingFilter(HPin, &Weighted[0], &Whitened[QLOOKAHEAD], &(State->Wghtstr)); + + /* copy from buffer into state */ + memcpy(State->whitened_buf, Whitened+PITCH_FRAME_LEN, sizeof(double) * QLOOKAHEAD); + + old_lag = State->PFstr_wght.oldlagp[0]; + old_gain = State->PFstr_wght.oldgainp[0]; + + /* inital pitch estimate */ + WebRtcIsac_InitializePitch(Weighted, old_lag, old_gain, State, lags); + + + /* Iterative optimization of lags - to be done */ + + /* compute energy of whitened signal */ + nrg_wht = 0.0; + for (k = 0; k < PITCH_FRAME_LEN + QLOOKAHEAD; k++) + nrg_wht += Whitened[k] * Whitened[k]; + + + /* Iterative optimization of gains */ + + /* set weights for energy, gain fluctiation, and spectral gain penalty functions */ + Wnrg = 1.0 / nrg_wht; + Wgain = 0.005; + Wfluct = 3.0; + + /* set initial gains */ + for (k = 0; k < 4; k++) + gains[k] = PITCH_MAX_GAIN_06; + + /* two iterations should be enough */ + for (iter = 0; iter < 2; iter++) { + /* compute Jacobian of pre-filter output towards gains */ + WebRtcIsac_PitchfilterPre_gains(Whitened, out_G, out_dG, &(State->PFstr_wght), lags, gains); + + /* gradient and approximate Hessian (lower triangle) for minimizing the filter's output power */ + for (k = 0; k < 4; k++) { + tmp = 0.0; + for (n = 0; n < PITCH_FRAME_LEN + QLOOKAHEAD; n++) + tmp += out_G[n] * out_dG[k][n]; + grad[k] = tmp * Wnrg; + } + for (k = 0; k < 4; k++) { + for (m = 0; m <= k; m++) { + tmp = 0.0; + for (n = 0; n < PITCH_FRAME_LEN + QLOOKAHEAD; n++) + tmp += out_dG[m][n] * out_dG[k][n]; + H[k][m] = tmp * Wnrg; + } + } + + /* add gradient and Hessian (lower triangle) for dampening fast gain changes */ + for (k = 0; k < 4; k++) { + tmp = kWeight[k+1][0] * old_gain; + for (m = 0; m < 4; m++) + tmp += kWeight[k+1][m+1] * gains[m]; + grad[k] += tmp * Wfluct; + } + for (k = 0; k < 4; k++) { + for (m = 0; m <= k; m++) { + H[k][m] += kWeight[k+1][m+1] * Wfluct; + } + } + + /* add gradient and Hessian for dampening gain */ + for (k = 0; k < 3; k++) { + tmp = 1.0 / (1 - gains[k]); + grad[k] += tmp * tmp * Wgain; + H[k][k] += 2.0 * tmp * (tmp * tmp * Wgain); + } + tmp = 1.0 / (1 - gains[3]); + grad[3] += 1.33 * (tmp * tmp * Wgain); + H[3][3] += 2.66 * tmp * (tmp * tmp * Wgain); + + + /* compute Cholesky factorization of Hessian + * by overwritting the upper triangle; scale factors on diagonal + * (for non pc-platforms store the inverse of the diagonals seperately to minimize divisions) */ + H[0][1] = H[1][0] / H[0][0]; + H[0][2] = H[2][0] / H[0][0]; + H[0][3] = H[3][0] / H[0][0]; + H[1][1] -= H[0][0] * H[0][1] * H[0][1]; + H[1][2] = (H[2][1] - H[0][1] * H[2][0]) / H[1][1]; + H[1][3] = (H[3][1] - H[0][1] * H[3][0]) / H[1][1]; + H[2][2] -= H[0][0] * H[0][2] * H[0][2] + H[1][1] * H[1][2] * H[1][2]; + H[2][3] = (H[3][2] - H[0][2] * H[3][0] - H[1][2] * H[1][1] * H[1][3]) / H[2][2]; + H[3][3] -= H[0][0] * H[0][3] * H[0][3] + H[1][1] * H[1][3] * H[1][3] + H[2][2] * H[2][3] * H[2][3]; + + /* Compute update as delta_gains = -inv(H) * grad */ + /* copy and negate */ + for (k = 0; k < 4; k++) + dG[k] = -grad[k]; + /* back substitution */ + dG[1] -= dG[0] * H[0][1]; + dG[2] -= dG[0] * H[0][2] + dG[1] * H[1][2]; + dG[3] -= dG[0] * H[0][3] + dG[1] * H[1][3] + dG[2] * H[2][3]; + /* scale */ + for (k = 0; k < 4; k++) + dG[k] /= H[k][k]; + /* back substitution */ + dG[2] -= dG[3] * H[2][3]; + dG[1] -= dG[3] * H[1][3] + dG[2] * H[1][2]; + dG[0] -= dG[3] * H[0][3] + dG[2] * H[0][2] + dG[1] * H[0][1]; + + /* update gains and check range */ + for (k = 0; k < 4; k++) { + gains[k] += dG[k]; + if (gains[k] > PITCH_MAX_GAIN) + gains[k] = PITCH_MAX_GAIN; + else if (gains[k] < 0.0) + gains[k] = 0.0; + } + } + + /* update state for next frame */ + WebRtcIsac_PitchfilterPre(Whitened, out, &(State->PFstr_wght), lags, gains); + + /* concatenate previous input's end and current input */ + memcpy(inbuf, State->inbuf, sizeof(double) * QLOOKAHEAD); + memcpy(inbuf+QLOOKAHEAD, in, sizeof(double) * PITCH_FRAME_LEN); + + /* lookahead pitch filtering for masking analysis */ + WebRtcIsac_PitchfilterPre_la(inbuf, out, &(State->PFstr), lags, gains); + + /* store last part of input */ + for (k = 0; k < QLOOKAHEAD; k++) + State->inbuf[k] = inbuf[k + PITCH_FRAME_LEN]; +} diff --git a/src/mod/codecs/mod_iSAC/pitch_estimator.h b/src/mod/codecs/mod_iSAC/pitch_estimator.h new file mode 100644 index 0000000000..f5d93564be --- /dev/null +++ b/src/mod/codecs/mod_iSAC/pitch_estimator.h @@ -0,0 +1,71 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * pitch_estimator.h + * + * Pitch functions + * + */ + +#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_PITCH_ESTIMATOR_H_ +#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_PITCH_ESTIMATOR_H_ + +#include "structs.h" + + + +void WebRtcIsac_PitchAnalysis(const double *in, /* PITCH_FRAME_LEN samples */ + double *out, /* PITCH_FRAME_LEN+QLOOKAHEAD samples */ + PitchAnalysisStruct *State, + double *lags, + double *gains); + +void WebRtcIsac_InitializePitch(const double *in, + const double old_lag, + const double old_gain, + PitchAnalysisStruct *State, + double *lags); + +void WebRtcIsac_PitchfilterPre(double *indat, + double *outdat, + PitchFiltstr *pfp, + double *lags, + double *gains); + +void WebRtcIsac_PitchfilterPost(double *indat, + double *outdat, + PitchFiltstr *pfp, + double *lags, + double *gains); + +void WebRtcIsac_PitchfilterPre_la(double *indat, + double *outdat, + PitchFiltstr *pfp, + double *lags, + double *gains); + +void WebRtcIsac_PitchfilterPre_gains(double *indat, + double *outdat, + double out_dG[][PITCH_FRAME_LEN + QLOOKAHEAD], + PitchFiltstr *pfp, + double *lags, + double *gains); + +void WebRtcIsac_WeightingFilter(const double *in, double *weiout, double *whiout, WeightFiltstr *wfdata); + +void WebRtcIsac_Highpass(const double *in, double *out, double *state, int N); + +void WebRtcIsac_DecimateAllpass(const double *in, + double *state_in, /* array of size: 2*ALLPASSSECTIONS+1 */ + int N, /* number of input samples */ + double *out); /* array of size N/2 */ + +#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_PITCH_ESTIMATOR_H_ */ diff --git a/src/mod/codecs/mod_iSAC/pitch_filter.c b/src/mod/codecs/mod_iSAC/pitch_filter.c new file mode 100644 index 0000000000..ccc8d214da --- /dev/null +++ b/src/mod/codecs/mod_iSAC/pitch_filter.c @@ -0,0 +1,469 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#include "pitch_estimator.h" +#include "os_specific_inline.h" + +#include +#include +#include + +static const double kDampFilter[PITCH_DAMPORDER] = {-0.07, 0.25, 0.64, 0.25, -0.07}; + +/* interpolation coefficients; generated by design_pitch_filter.m */ +static const double kIntrpCoef[PITCH_FRACS][PITCH_FRACORDER] = { + {-0.02239172458614, 0.06653315052934, -0.16515880017569, 0.60701333734125, 0.64671399919202, -0.20249000396417, 0.09926548334755, -0.04765933793109, 0.01754159521746}, + {-0.01985640750434, 0.05816126837866, -0.13991265473714, 0.44560418147643, 0.79117042386876, -0.20266133815188, 0.09585268418555, -0.04533310458084, 0.01654127246314}, + {-0.01463300534216, 0.04229888475060, -0.09897034715253, 0.28284326017787, 0.90385267956632, -0.16976950138649, 0.07704272393639, -0.03584218578311, 0.01295781500709}, + {-0.00764851320885, 0.02184035544377, -0.04985561057281, 0.13083306574393, 0.97545011664662, -0.10177807997561, 0.04400901776474, -0.02010737175166, 0.00719783432422}, + {-0.00000000000000, 0.00000000000000, -0.00000000000001, 0.00000000000001, 0.99999999999999, 0.00000000000001, -0.00000000000001, 0.00000000000000, -0.00000000000000}, + { 0.00719783432422, -0.02010737175166, 0.04400901776474, -0.10177807997562, 0.97545011664663, 0.13083306574393, -0.04985561057280, 0.02184035544377, -0.00764851320885}, + { 0.01295781500710, -0.03584218578312, 0.07704272393640, -0.16976950138650, 0.90385267956634, 0.28284326017785, -0.09897034715252, 0.04229888475059, -0.01463300534216}, + { 0.01654127246315, -0.04533310458085, 0.09585268418557, -0.20266133815190, 0.79117042386878, 0.44560418147640, -0.13991265473712, 0.05816126837865, -0.01985640750433} +}; + + +void WebRtcIsac_PitchfilterPre(double *indat, + double *outdat, + PitchFiltstr *pfp, + double *lags, + double *gains) +{ + + double ubuf[PITCH_INTBUFFSIZE]; + const double *fracoeff = NULL; + double curgain, curlag, gaindelta, lagdelta; + double sum, inystate[PITCH_DAMPORDER]; + double ftmp, oldlag, oldgain; + int k, n, m, pos, ind, pos2, Li, frc; + + Li = 0; + /* Set up buffer and states */ + memcpy(ubuf, pfp->ubuf, sizeof(double) * PITCH_BUFFSIZE); + memcpy(inystate, pfp->ystate, sizeof(double) * PITCH_DAMPORDER); + + oldlag = *pfp->oldlagp; + oldgain = *pfp->oldgainp; + + /* No interpolation if pitch lag step is big */ + if ((lags[0] > (PITCH_UPSTEP * oldlag)) || (lags[0] < (PITCH_DOWNSTEP * oldlag))) { + oldlag = lags[0]; + oldgain = gains[0]; + } + + ind=0; + for (k=0;k0;m--) + inystate[m] = inystate[m-1]; + + /* Filter to get fractional pitch */ + pos = ind + PITCH_BUFFSIZE; + pos2 = pos - Li; + sum=0; + for (m=0;mubuf, ubuf+PITCH_FRAME_LEN, sizeof(double) * PITCH_BUFFSIZE); + memcpy(pfp->ystate, inystate, sizeof(double) * PITCH_DAMPORDER); + + *pfp->oldlagp = oldlag; + *pfp->oldgainp = oldgain; + +} + + +void WebRtcIsac_PitchfilterPre_la(double *indat, + double *outdat, + PitchFiltstr *pfp, + double *lags, + double *gains) +{ + double ubuf[PITCH_INTBUFFSIZE+QLOOKAHEAD]; + const double *fracoeff = NULL; + double curgain, curlag, gaindelta, lagdelta; + double sum, inystate[PITCH_DAMPORDER]; + double ftmp; + double oldlag, oldgain; + int k, n, m, pos, ind, pos2, Li, frc; + + Li = 0; + /* Set up buffer and states */ + memcpy(ubuf, pfp->ubuf, sizeof(double) * PITCH_BUFFSIZE); + memcpy(inystate, pfp->ystate, sizeof(double) * PITCH_DAMPORDER); + + oldlag = *pfp->oldlagp; + oldgain = *pfp->oldgainp; + + /* No interpolation if pitch lag step is big */ + if ((lags[0] > (PITCH_UPSTEP * oldlag)) || (lags[0] < (PITCH_DOWNSTEP * oldlag))) { + oldlag = lags[0]; + oldgain = gains[0]; + } + + + ind=0; + for (k=0;k0;m--) + inystate[m] = inystate[m-1]; + + /* Filter to get fractional pitch */ + pos = ind + PITCH_BUFFSIZE; + pos2 = pos - Li; + sum=0.0; + for (m=0;mubuf, ubuf+PITCH_FRAME_LEN, sizeof(double) * PITCH_BUFFSIZE); + memcpy(pfp->ystate, inystate, sizeof(double) * PITCH_DAMPORDER); + + *pfp->oldlagp = oldlag; + *pfp->oldgainp = oldgain; + + + /* Filter look-ahead segment */ + for (n=0;n0;m--) + inystate[m] = inystate[m-1]; + + /* Filter to get fractional pitch */ + pos = ind + PITCH_BUFFSIZE; + pos2 = pos - Li; + sum=0.0; + for (m=0;mubuf, sizeof(double) * PITCH_BUFFSIZE); + memcpy(inystate, pfp->ystate, sizeof(double) * PITCH_DAMPORDER); + + /* clear some buffers */ + for (k = 0; k < 4; k++) { + gain_mult[k] = 0.0; + for (n = 0; n < PITCH_DAMPORDER; n++) + inystate_dG[k][n] = 0.0; + } + + oldlag = *pfp->oldlagp; + oldgain = *pfp->oldgainp; + + /* No interpolation if pitch lag step is big */ + if ((lags[0] > (PITCH_UPSTEP * oldlag)) || (lags[0] < (PITCH_DOWNSTEP * oldlag))) { + oldlag = lags[0]; + oldgain = gains[0]; + gain_mult[0] = 1.0; + } + + + ind=0; + for (k=0;k 1.0) gain_mult[k] = 1.0; + if (k > 0) gain_mult[k-1] -= 0.2; + } + + /* shift low pass filter states */ + for (m=PITCH_DAMPORDER-1;m>0;m--) { + inystate[m] = inystate[m-1]; + for (j = 0; j < 4; j++) + inystate_dG[j][m] = inystate_dG[j][m-1]; + } + + pos = ind + PITCH_BUFFSIZE; + pos2 = pos - Li; + + /* Filter to get fractional pitch */ + sum=0.0; + for (m=0;m 0) ? Li-ind : 0; + for (j = 0; j < k+1; j++) { + /* filter */ + sum2 = 0.0; + for (m = PITCH_FRACORDER-1; m >= m_tmp; m--) + sum2 += out_dG[j][ind-Li + m] * fracoeff[m]; + inystate_dG[j][0] = gain_mult[j] * sum + curgain * sum2; + } + + /* Low pass filter */ + sum=0.0; + for (m=0;m0;m--) { + inystate[m] = inystate[m-1]; + for (j = 0; j < 4; j++) + inystate_dG[j][m] = inystate_dG[j][m-1]; + } + + pos = ind + PITCH_BUFFSIZE; + pos2 = pos - Li; + + /* Filter to get fractional pitch */ + sum=0.0; + for (m=0;m 0) ? Li-ind : 0; + for (j = 0; (j= m_tmp; m--) + sum2 += out_dG[j][ind-Li + m] * fracoeff[m]; + inystate_dG[j][0] = gain_mult[j] * sum + curgain * sum2; + } + + /* Low pass filter */ + sum=0.0; + for (m=0;mubuf, sizeof(double) * PITCH_BUFFSIZE); + memcpy(inystate, pfp->ystate, sizeof(double) * PITCH_DAMPORDER); + + oldlag = *pfp->oldlagp; + oldgain = *pfp->oldgainp; + + /* make output more periodic */ + for (k=0;k (PITCH_UPSTEP * oldlag)) || (lags[0] < (PITCH_DOWNSTEP * oldlag))) { + oldlag = lags[0]; + oldgain = gains[0]; + } + + + ind=0; + for (k=0;k0;m--) + inystate[m] = inystate[m-1]; + + /* Filter to get fractional pitch */ + pos = ind + PITCH_BUFFSIZE; + pos2 = pos - Li; + sum=0.0; + for (m=0;mubuf, ubuf+PITCH_FRAME_LEN, sizeof(double) * PITCH_BUFFSIZE); + memcpy(pfp->ystate, inystate, sizeof(double) * PITCH_DAMPORDER); + + *pfp->oldlagp = oldlag; + *pfp->oldgainp = oldgain; + +} diff --git a/src/mod/codecs/mod_iSAC/pitch_gain_tables.c b/src/mod/codecs/mod_iSAC/pitch_gain_tables.c new file mode 100644 index 0000000000..5d998a2928 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/pitch_gain_tables.c @@ -0,0 +1,105 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#include "pitch_gain_tables.h" + +#include "settings.h" + +/* header file for coding tables for the pitch filter side-info in the entropy coder */ +/********************* Pitch Filter Gain Coefficient Tables ************************/ +/* cdf for quantized pitch filter gains */ +const WebRtc_UWord16 WebRtcIsac_kQPitchGainCdf[255] = { + 0, 2, 4, 6, 64, 901, 903, 905, 16954, 16956, + 16961, 17360, 17362, 17364, 17366, 17368, 17370, 17372, 17374, 17411, + 17514, 17516, 17583, 18790, 18796, 18802, 20760, 20777, 20782, 21722, + 21724, 21728, 21738, 21740, 21742, 21744, 21746, 21748, 22224, 22227, + 22230, 23214, 23229, 23239, 25086, 25108, 25120, 26088, 26094, 26098, + 26175, 26177, 26179, 26181, 26183, 26185, 26484, 26507, 26522, 27705, + 27731, 27750, 29767, 29799, 29817, 30866, 30883, 30885, 31025, 31029, + 31031, 31033, 31035, 31037, 31114, 31126, 31134, 32687, 32722, 32767, + 35718, 35742, 35757, 36943, 36952, 36954, 37115, 37128, 37130, 37132, + 37134, 37136, 37143, 37145, 37152, 38843, 38863, 38897, 47458, 47467, + 47474, 49040, 49061, 49063, 49145, 49157, 49159, 49161, 49163, 49165, + 49167, 49169, 49171, 49757, 49770, 49782, 61333, 61344, 61346, 62860, + 62883, 62885, 62887, 62889, 62891, 62893, 62895, 62897, 62899, 62901, + 62903, 62905, 62907, 62909, 65496, 65498, 65500, 65521, 65523, 65525, + 65527, 65529, 65531, 65533, 65535, 65535, 65535, 65535, 65535, 65535, + 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, + 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, + 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, + 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, + 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, + 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, + 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, + 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, + 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, + 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, + 65535, 65535, 65535, 65535, 65535}; + +/* index limits and ranges */ +const WebRtc_Word16 WebRtcIsac_kIndexLowerLimitGain[3] = { + -7, -2, -1}; + +const WebRtc_Word16 WebRtcIsac_kIndexUpperLimitGain[3] = { + 0, 3, 1}; + +const WebRtc_UWord16 WebRtcIsac_kIndexMultsGain[2] = { + 18, 3}; + +/* size of cdf table */ +const WebRtc_UWord16 WebRtcIsac_kQCdfTableSizeGain[1] = { + 256}; + +///////////////////////////FIXED POINT +/* mean values of pitch filter gains in FIXED point */ +const WebRtc_Word16 WebRtcIsac_kQMeanGain1Q12[144] = { + 843, 1092, 1336, 1222, 1405, 1656, 1500, 1815, 1843, 1838, 1839, 1843, 1843, 1843, 1843, 1843, + 1843, 1843, 814, 846, 1092, 1013, 1174, 1383, 1391, 1511, 1584, 1734, 1753, 1843, 1843, 1843, + 1843, 1843, 1843, 1843, 524, 689, 777, 845, 947, 1069, 1090, 1263, 1380, 1447, 1559, 1676, + 1645, 1749, 1843, 1843, 1843, 1843, 81, 477, 563, 611, 706, 806, 849, 1012, 1192, 1128, + 1330, 1489, 1425, 1576, 1826, 1741, 1843, 1843, 0, 290, 305, 356, 488, 575, 602, 741, + 890, 835, 1079, 1196, 1182, 1376, 1519, 1506, 1680, 1843, 0, 47, 97, 69, 289, 381, + 385, 474, 617, 664, 803, 1079, 935, 1160, 1269, 1265, 1506, 1741, 0, 0, 0, 0, + 112, 120, 190, 283, 442, 343, 526, 809, 684, 935, 1134, 1020, 1265, 1506, 0, 0, + 0, 0, 0, 0, 0, 111, 256, 87, 373, 597, 430, 684, 935, 770, 1020, 1265}; + +const WebRtc_Word16 WebRtcIsac_kQMeanGain2Q12[144] = { + 1760, 1525, 1285, 1747, 1671, 1393, 1843, 1826, 1555, 1843, 1784, 1606, 1843, 1843, 1711, 1843, + 1843, 1814, 1389, 1275, 1040, 1564, 1414, 1252, 1610, 1495, 1343, 1753, 1592, 1405, 1804, 1720, + 1475, 1843, 1814, 1581, 1208, 1061, 856, 1349, 1148, 994, 1390, 1253, 1111, 1495, 1343, 1178, + 1770, 1465, 1234, 1814, 1581, 1342, 1040, 793, 713, 1053, 895, 737, 1128, 1003, 861, 1277, + 1094, 981, 1475, 1192, 1019, 1581, 1342, 1098, 855, 570, 483, 833, 648, 540, 948, 744, + 572, 1009, 844, 636, 1234, 934, 685, 1342, 1217, 984, 537, 318, 124, 603, 423, 350, + 687, 479, 322, 791, 581, 430, 987, 671, 488, 1098, 849, 597, 283, 27, 0, 397, + 222, 38, 513, 271, 124, 624, 325, 157, 737, 484, 233, 849, 597, 343, 27, 0, + 0, 141, 0, 0, 256, 69, 0, 370, 87, 0, 484, 229, 0, 597, 343, 87}; + +const WebRtc_Word16 WebRtcIsac_kQMeanGain3Q12[144] = { + 1843, 1843, 1711, 1843, 1818, 1606, 1843, 1827, 1511, 1814, 1639, 1393, 1760, 1525, 1285, 1656, + 1419, 1176, 1835, 1718, 1475, 1841, 1650, 1387, 1648, 1498, 1287, 1600, 1411, 1176, 1522, 1299, + 1040, 1419, 1176, 928, 1773, 1461, 1128, 1532, 1355, 1202, 1429, 1260, 1115, 1398, 1151, 1025, + 1172, 1080, 790, 1176, 928, 677, 1475, 1147, 1019, 1276, 1096, 922, 1214, 1010, 901, 1057, + 893, 800, 1040, 796, 734, 928, 677, 424, 1137, 897, 753, 1120, 830, 710, 875, 751, + 601, 795, 642, 583, 790, 544, 475, 677, 474, 140, 987, 750, 482, 697, 573, 450, + 691, 487, 303, 661, 394, 332, 537, 303, 220, 424, 168, 0, 737, 484, 229, 624, + 348, 153, 441, 261, 136, 397, 166, 51, 283, 27, 0, 168, 0, 0, 484, 229, + 0, 370, 57, 0, 256, 43, 0, 141, 0, 0, 27, 0, 0, 0, 0, 0}; + + +const WebRtc_Word16 WebRtcIsac_kQMeanGain4Q12[144] = { + 1843, 1843, 1843, 1843, 1841, 1843, 1500, 1821, 1843, 1222, 1434, 1656, 843, 1092, 1336, 504, + 757, 1007, 1843, 1843, 1843, 1838, 1791, 1843, 1265, 1505, 1599, 965, 1219, 1425, 730, 821, + 1092, 249, 504, 757, 1783, 1819, 1843, 1351, 1567, 1727, 1096, 1268, 1409, 805, 961, 1131, + 444, 670, 843, 0, 249, 504, 1425, 1655, 1743, 1096, 1324, 1448, 822, 1019, 1199, 490, + 704, 867, 81, 450, 555, 0, 0, 249, 1247, 1428, 1530, 881, 1073, 1283, 610, 759, + 939, 278, 464, 645, 0, 200, 270, 0, 0, 0, 935, 1163, 1410, 528, 790, 1068, + 377, 499, 717, 173, 240, 274, 0, 43, 62, 0, 0, 0, 684, 935, 1182, 343, + 551, 735, 161, 262, 423, 0, 55, 27, 0, 0, 0, 0, 0, 0, 430, 684, + 935, 87, 377, 597, 0, 46, 256, 0, 0, 0, 0, 0, 0, 0, 0, 0}; diff --git a/src/mod/codecs/mod_iSAC/pitch_gain_tables.h b/src/mod/codecs/mod_iSAC/pitch_gain_tables.h new file mode 100644 index 0000000000..f958f5df45 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/pitch_gain_tables.h @@ -0,0 +1,45 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * pitch_gain_tables.h + * + * This file contains tables for the pitch filter side-info in the entropy coder. + * + */ + +#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_PITCH_GAIN_TABLES_H_ +#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_PITCH_GAIN_TABLES_H_ + +#include "typedefs.h" + +/* header file for coding tables for the pitch filter side-info in the entropy coder */ +/********************* Pitch Filter Gain Coefficient Tables ************************/ +/* cdf for quantized pitch filter gains */ +extern const WebRtc_UWord16 WebRtcIsac_kQPitchGainCdf[255]; + +/* index limits and ranges */ +extern const WebRtc_Word16 WebRtcIsac_kIndexLowerLimitGain[3]; + +extern const WebRtc_Word16 WebRtcIsac_kIndexUpperLimitGain[3]; +extern const WebRtc_UWord16 WebRtcIsac_kIndexMultsGain[2]; + +/* mean values of pitch filter gains */ +//(Y) +extern const WebRtc_Word16 WebRtcIsac_kQMeanGain1Q12[144]; +extern const WebRtc_Word16 WebRtcIsac_kQMeanGain2Q12[144]; +extern const WebRtc_Word16 WebRtcIsac_kQMeanGain3Q12[144]; +extern const WebRtc_Word16 WebRtcIsac_kQMeanGain4Q12[144]; +//(Y) + +/* size of cdf table */ +extern const WebRtc_UWord16 WebRtcIsac_kQCdfTableSizeGain[1]; + +#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_PITCH_GAIN_TABLES_H_ */ diff --git a/src/mod/codecs/mod_iSAC/pitch_lag_tables.c b/src/mod/codecs/mod_iSAC/pitch_lag_tables.c new file mode 100644 index 0000000000..72a031e227 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/pitch_lag_tables.c @@ -0,0 +1,277 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#include "pitch_lag_tables.h" +#include "settings.h" + +/* header file for coding tables for the pitch filter side-info in the entropy coder */ +/********************* Pitch Filter Gain Coefficient Tables ************************/ + +/* tables for use with small pitch gain */ + +/* cdf for quantized pitch filter lags */ +const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf1Lo[127] = { + 0, 134, 336, 549, 778, 998, 1264, 1512, 1777, 2070, + 2423, 2794, 3051, 3361, 3708, 3979, 4315, 4610, 4933, 5269, + 5575, 5896, 6155, 6480, 6816, 7129, 7477, 7764, 8061, 8358, + 8718, 9020, 9390, 9783, 10177, 10543, 10885, 11342, 11795, 12213, + 12680, 13096, 13524, 13919, 14436, 14903, 15349, 15795, 16267, 16734, + 17266, 17697, 18130, 18632, 19080, 19447, 19884, 20315, 20735, 21288, + 21764, 22264, 22723, 23193, 23680, 24111, 24557, 25022, 25537, 26082, + 26543, 27090, 27620, 28139, 28652, 29149, 29634, 30175, 30692, 31273, + 31866, 32506, 33059, 33650, 34296, 34955, 35629, 36295, 36967, 37726, + 38559, 39458, 40364, 41293, 42256, 43215, 44231, 45253, 46274, 47359, + 48482, 49678, 50810, 51853, 53016, 54148, 55235, 56263, 57282, 58363, + 59288, 60179, 61076, 61806, 62474, 63129, 63656, 64160, 64533, 64856, + 65152, 65535, 65535, 65535, 65535, 65535, 65535}; + +const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf2Lo[20] = { + 0, 429, 3558, 5861, 8558, 11639, 15210, 19502, 24773, 31983, + 42602, 48567, 52601, 55676, 58160, 60172, 61889, 63235, 65383, 65535}; + +const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf3Lo[2] = { + 0, 65535}; + +const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf4Lo[10] = { + 0, 2966, 6368, 11182, 19431, 37793, 48532, 55353, 60626, 65535}; + +const WebRtc_UWord16 *WebRtcIsac_kQPitchLagCdfPtrLo[4] = {WebRtcIsac_kQPitchLagCdf1Lo, WebRtcIsac_kQPitchLagCdf2Lo, WebRtcIsac_kQPitchLagCdf3Lo, WebRtcIsac_kQPitchLagCdf4Lo}; + +/* size of first cdf table */ +const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdfSizeLo[1] = {128}; + +/* index limits and ranges */ +const WebRtc_Word16 WebRtcIsac_kQIndexLowerLimitLagLo[4] = { +-140, -9, 0, -4}; + +const WebRtc_Word16 WebRtcIsac_kQIndexUpperLimitLagLo[4] = { +-20, 9, 0, 4}; + +/* initial index for arithmetic decoder */ +const WebRtc_UWord16 WebRtcIsac_kQInitIndexLagLo[3] = { + 10, 1, 5}; + +/* mean values of pitch filter lags */ +const double WebRtcIsac_kQMeanLag2Lo[19] = { +-17.21385070, -15.82678944, -14.07123081, -12.03003877, -10.01311864, -8.00794627, -5.91162987, -3.89231876, -1.90220980, -0.01879275, + 1.89144232, 3.88123171, 5.92146992, 7.96435361, 9.98923648, 11.98266347, 13.96101002, 15.74855713, 17.10976611}; + +const double WebRtcIsac_kQMeanLag3Lo[1] = { + 0.00000000}; + +const double WebRtcIsac_kQMeanLag4Lo[9] = { +-7.76246496, -5.92083980, -3.94095226, -1.89502305, 0.03724681, 1.93054221, 3.96443467, 5.91726366, 7.78434291}; + +const double WebRtcIsac_kQPitchLagStepsizeLo = 2.000000; + + +/* tables for use with medium pitch gain */ + +/* cdf for quantized pitch filter lags */ +const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf1Mid[255] = { + 0, 28, 61, 88, 121, 149, 233, 331, 475, 559, + 624, 661, 689, 712, 745, 791, 815, 843, 866, 922, + 959, 1024, 1061, 1117, 1178, 1238, 1280, 1350, 1453, 1513, + 1564, 1625, 1671, 1741, 1788, 1904, 2072, 2421, 2626, 2770, + 2840, 2900, 2942, 3012, 3068, 3115, 3147, 3194, 3254, 3319, + 3366, 3520, 3678, 3780, 3850, 3911, 3957, 4032, 4106, 4185, + 4292, 4474, 4683, 4842, 5019, 5191, 5321, 5428, 5540, 5675, + 5763, 5847, 5959, 6127, 6304, 6564, 6839, 7090, 7263, 7421, + 7556, 7728, 7872, 7984, 8142, 8361, 8580, 8743, 8938, 9227, + 9409, 9539, 9674, 9795, 9930, 10060, 10177, 10382, 10614, 10861, + 11038, 11271, 11415, 11629, 11792, 12044, 12193, 12416, 12574, 12821, + 13007, 13235, 13445, 13654, 13901, 14134, 14488, 15000, 15703, 16285, + 16504, 16797, 17086, 17328, 17579, 17807, 17998, 18268, 18538, 18836, + 19087, 19274, 19474, 19716, 19935, 20270, 20833, 21303, 21532, 21741, + 21978, 22207, 22523, 22770, 23054, 23613, 23943, 24204, 24399, 24651, + 24832, 25074, 25270, 25549, 25759, 26015, 26150, 26424, 26713, 27048, + 27342, 27504, 27681, 27854, 28021, 28207, 28412, 28664, 28859, 29064, + 29278, 29548, 29748, 30107, 30377, 30656, 30856, 31164, 31452, 31755, + 32011, 32328, 32626, 32919, 33319, 33789, 34329, 34925, 35396, 35973, + 36443, 36964, 37551, 38156, 38724, 39357, 40023, 40908, 41587, 42602, + 43924, 45037, 45810, 46597, 47421, 48291, 49092, 50051, 51448, 52719, + 53440, 54241, 54944, 55977, 56676, 57299, 57872, 58389, 59059, 59688, + 60237, 60782, 61094, 61573, 61890, 62290, 62658, 63030, 63217, 63454, + 63622, 63882, 64003, 64273, 64427, 64529, 64581, 64697, 64758, 64902, + 65414, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, + 65535, 65535, 65535, 65535, 65535}; + +const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf2Mid[36] = { + 0, 71, 335, 581, 836, 1039, 1323, 1795, 2258, 2608, + 3005, 3591, 4243, 5344, 7163, 10583, 16848, 28078, 49448, 57007, + 60357, 61850, 62837, 63437, 63872, 64188, 64377, 64614, 64774, 64949, + 65039, 65115, 65223, 65360, 65474, 65535}; + +const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf3Mid[2] = { + 0, 65535}; + +const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf4Mid[20] = { + 0, 28, 246, 459, 667, 1045, 1523, 2337, 4337, 11347, + 44231, 56709, 60781, 62243, 63161, 63969, 64608, 65062, 65502, 65535}; + +const WebRtc_UWord16 *WebRtcIsac_kQPitchLagCdfPtrMid[4] = {WebRtcIsac_kQPitchLagCdf1Mid, WebRtcIsac_kQPitchLagCdf2Mid, WebRtcIsac_kQPitchLagCdf3Mid, WebRtcIsac_kQPitchLagCdf4Mid}; + +/* size of first cdf table */ +const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdfSizeMid[1] = {256}; + +/* index limits and ranges */ +const WebRtc_Word16 WebRtcIsac_kQIndexLowerLimitLagMid[4] = { +-280, -17, 0, -9}; + +const WebRtc_Word16 WebRtcIsac_kQIndexUpperLimitLagMid[4] = { +-40, 17, 0, 9}; + +/* initial index for arithmetic decoder */ +const WebRtc_UWord16 WebRtcIsac_kQInitIndexLagMid[3] = { + 18, 1, 10}; + +/* mean values of pitch filter lags */ +const double WebRtcIsac_kQMeanLag2Mid[35] = { +-16.89183900, -15.86949778, -15.05476653, -14.00664348, -13.02793036, -12.07324237, -11.00542532, -10.11250602, -8.90792971, -8.02474753, +-7.00426767, -5.94055287, -4.98251338, -3.91053158, -2.98820425, -1.93524245, -0.92978085, -0.01722509, 0.91317387, 1.92973955, + 2.96908851, 3.93728974, 4.96308471, 5.92244151, 7.08673497, 8.00993708, 9.04656316, 9.98538742, 10.97851694, 11.94772884, + 13.02426166, 14.00039951, 15.01347042, 15.80758023, 16.94086895}; + +const double WebRtcIsac_kQMeanLag3Mid[1] = { + 0.00000000}; + +const double WebRtcIsac_kQMeanLag4Mid[19] = { +-8.60409403, -7.89198395, -7.03450280, -5.86260421, -4.93822322, -3.93078706, -2.91302322, -1.91824007, -0.87003282, 0.02822649, + 0.89951758, 1.87495484, 2.91802604, 3.96874074, 5.06571703, 5.93618227, 7.00520185, 7.88497726, 8.64160364}; + +const double WebRtcIsac_kQPitchLagStepsizeMid = 1.000000; + + +/* tables for use with large pitch gain */ + +/* cdf for quantized pitch filter lags */ +const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf1Hi[511] = { + 0, 7, 18, 33, 69, 105, 156, 228, 315, 612, + 680, 691, 709, 724, 735, 738, 742, 746, 749, 753, + 756, 760, 764, 774, 782, 785, 789, 796, 800, 803, + 807, 814, 818, 822, 829, 832, 847, 854, 858, 869, + 876, 883, 898, 908, 934, 977, 1010, 1050, 1060, 1064, + 1075, 1078, 1086, 1089, 1093, 1104, 1111, 1122, 1133, 1136, + 1151, 1162, 1183, 1209, 1252, 1281, 1339, 1364, 1386, 1401, + 1411, 1415, 1426, 1430, 1433, 1440, 1448, 1455, 1462, 1477, + 1487, 1495, 1502, 1506, 1509, 1516, 1524, 1531, 1535, 1542, + 1553, 1556, 1578, 1589, 1611, 1625, 1639, 1643, 1654, 1665, + 1672, 1687, 1694, 1705, 1708, 1719, 1730, 1744, 1752, 1759, + 1791, 1795, 1820, 1867, 1886, 1915, 1936, 1943, 1965, 1987, + 2041, 2099, 2161, 2175, 2200, 2211, 2226, 2233, 2244, 2251, + 2266, 2280, 2287, 2298, 2309, 2316, 2331, 2342, 2356, 2378, + 2403, 2418, 2447, 2497, 2544, 2602, 2863, 2895, 2903, 2935, + 2950, 2971, 3004, 3011, 3018, 3029, 3040, 3062, 3087, 3127, + 3152, 3170, 3199, 3243, 3293, 3322, 3340, 3377, 3402, 3427, + 3474, 3518, 3543, 3579, 3601, 3637, 3659, 3706, 3731, 3760, + 3818, 3847, 3869, 3901, 3920, 3952, 4068, 4169, 4220, 4271, + 4524, 4571, 4604, 4632, 4672, 4730, 4777, 4806, 4857, 4904, + 4951, 5002, 5031, 5060, 5107, 5150, 5212, 5266, 5331, 5382, + 5432, 5490, 5544, 5610, 5700, 5762, 5812, 5874, 5972, 6022, + 6091, 6163, 6232, 6305, 6402, 6540, 6685, 6880, 7090, 7271, + 7379, 7452, 7542, 7625, 7687, 7770, 7843, 7911, 7966, 8024, + 8096, 8190, 8252, 8320, 8411, 8501, 8585, 8639, 8751, 8842, + 8918, 8986, 9066, 9127, 9203, 9269, 9345, 9406, 9464, 9536, + 9612, 9667, 9735, 9844, 9931, 10036, 10119, 10199, 10260, 10358, + 10441, 10514, 10666, 10734, 10872, 10951, 11053, 11125, 11223, 11324, + 11516, 11664, 11737, 11816, 11892, 12008, 12120, 12200, 12280, 12392, + 12490, 12576, 12685, 12812, 12917, 13003, 13108, 13210, 13300, 13384, + 13470, 13579, 13673, 13771, 13879, 13999, 14136, 14201, 14368, 14614, + 14759, 14867, 14958, 15030, 15121, 15189, 15280, 15385, 15461, 15555, + 15653, 15768, 15884, 15971, 16069, 16145, 16210, 16279, 16380, 16463, + 16539, 16615, 16688, 16818, 16919, 17017, 18041, 18338, 18523, 18649, + 18790, 18917, 19047, 19167, 19315, 19460, 19601, 19731, 19858, 20068, + 20173, 20318, 20466, 20625, 20741, 20911, 21045, 21201, 21396, 21588, + 21816, 22022, 22305, 22547, 22786, 23072, 23322, 23600, 23879, 24168, + 24433, 24769, 25120, 25511, 25895, 26289, 26792, 27219, 27683, 28077, + 28566, 29094, 29546, 29977, 30491, 30991, 31573, 32105, 32594, 33173, + 33788, 34497, 35181, 35833, 36488, 37255, 37921, 38645, 39275, 39894, + 40505, 41167, 41790, 42431, 43096, 43723, 44385, 45134, 45858, 46607, + 47349, 48091, 48768, 49405, 49955, 50555, 51167, 51985, 52611, 53078, + 53494, 53965, 54435, 54996, 55601, 56125, 56563, 56838, 57244, 57566, + 57967, 58297, 58771, 59093, 59419, 59647, 59886, 60143, 60461, 60693, + 60917, 61170, 61416, 61634, 61891, 62122, 62310, 62455, 62632, 62839, + 63103, 63436, 63639, 63805, 63906, 64015, 64192, 64355, 64475, 64558, + 64663, 64742, 64811, 64865, 64916, 64956, 64981, 65025, 65068, 65115, + 65195, 65314, 65419, 65535, 65535, 65535, 65535, 65535, 65535, 65535, + 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, + 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, + 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, + 65535}; + +const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf2Hi[68] = { + 0, 7, 11, 22, 37, 52, 56, 59, 81, 85, + 89, 96, 115, 130, 137, 152, 170, 181, 193, 200, + 207, 233, 237, 259, 289, 318, 363, 433, 592, 992, + 1607, 3062, 6149, 12206, 25522, 48368, 58223, 61918, 63640, 64584, + 64943, 65098, 65206, 65268, 65294, 65335, 65350, 65372, 65387, 65402, + 65413, 65420, 65428, 65435, 65439, 65450, 65454, 65468, 65472, 65476, + 65483, 65491, 65498, 65505, 65516, 65520, 65528, 65535}; + +const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf3Hi[2] = { + 0, 65535}; + +const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf4Hi[35] = { + 0, 7, 19, 30, 41, 48, 63, 74, 82, 96, + 122, 152, 215, 330, 701, 2611, 10931, 48106, 61177, 64341, + 65112, 65238, 65309, 65338, 65364, 65379, 65401, 65427, 65453, 65465, + 65476, 65490, 65509, 65528, 65535}; + +const WebRtc_UWord16 *WebRtcIsac_kQPitchLagCdfPtrHi[4] = {WebRtcIsac_kQPitchLagCdf1Hi, WebRtcIsac_kQPitchLagCdf2Hi, WebRtcIsac_kQPitchLagCdf3Hi, WebRtcIsac_kQPitchLagCdf4Hi}; + +/* size of first cdf table */ +const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdfSizeHi[1] = {512}; + +/* index limits and ranges */ +const WebRtc_Word16 WebRtcIsac_kQindexLowerLimitLagHi[4] = { +-552, -34, 0, -16}; + +const WebRtc_Word16 WebRtcIsac_kQindexUpperLimitLagHi[4] = { +-80, 32, 0, 17}; + +/* initial index for arithmetic decoder */ +const WebRtc_UWord16 WebRtcIsac_kQInitIndexLagHi[3] = { + 34, 1, 18}; + +/* mean values of pitch filter lags */ +const double WebRtcIsac_kQMeanLag2Hi[67] = { +-17.07263295, -16.50000000, -15.83966081, -15.55613708, -14.96948007, -14.50000000, -14.00000000, -13.48377986, -13.00000000, -12.50000000, +-11.93199636, -11.44530414, -11.04197641, -10.39910301, -10.15202337, -9.51322461, -8.93357741, -8.46456632, -8.10270672, -7.53751847, +-6.98686404, -6.50000000, -6.08463150, -5.46872991, -5.00864717, -4.50163760, -4.01382410, -3.43856708, -2.96898001, -2.46554810, +-1.96861004, -1.47106701, -0.97197237, -0.46561654, -0.00531409, 0.45767857, 0.96777907, 1.47507903, 1.97740425, 2.46695420, + 3.00695774, 3.47167185, 4.02712538, 4.49280007, 5.01087640, 5.48191963, 6.04916550, 6.51511058, 6.97297819, 7.46565499, + 8.01489405, 8.39912001, 8.91819757, 9.50000000, 10.11654065, 10.50000000, 11.03712583, 11.50000000, 12.00000000, 12.38964346, + 12.89466127, 13.43657881, 13.96013840, 14.46279912, 15.00000000, 15.39412269, 15.96662441}; + +const double WebRtcIsac_kQMeanLag3Hi[1] = { + 0.00000000}; + +const double WebRtcIsac_kQMeanLag4Hi[34] = { +-7.98331221, -7.47988769, -7.03626557, -6.52708003, -6.06982173, -5.51856292, -5.05827033, -4.45909878, -3.99125864, -3.45308135, +-3.02328139, -2.47297273, -1.94341995, -1.44699056, -0.93612243, -0.43012406, 0.01120357, 0.44054812, 0.93199883, 1.45669587, + 1.97218322, 2.50187419, 2.98748690, 3.49343202, 4.01660147, 4.50984306, 5.01402683, 5.58936797, 5.91787793, 6.59998900, + 6.85034315, 7.53503316, 7.87711194, 8.53631648}; + +const double WebRtcIsac_kQPitchLagStepsizeHi = 0.500000; + +/* transform matrix */ +const double WebRtcIsac_kTransform[4][4] = { +{-0.50000000, -0.50000000, -0.50000000, -0.50000000}, +{ 0.67082039, 0.22360680, -0.22360680, -0.67082039}, +{ 0.50000000, -0.50000000, -0.50000000, 0.50000000}, +{ 0.22360680, -0.67082039, 0.67082039, -0.22360680}}; + +/* transpose transform matrix */ +const double WebRtcIsac_kTransformTranspose[4][4] = { +{-0.50000000, 0.67082039, 0.50000000, 0.22360680}, +{-0.50000000, 0.22360680, -0.50000000, -0.67082039}, +{-0.50000000, -0.22360680, -0.50000000, 0.67082039}, +{-0.50000000, -0.67082039, 0.50000000, -0.22360680}}; + diff --git a/src/mod/codecs/mod_iSAC/pitch_lag_tables.h b/src/mod/codecs/mod_iSAC/pitch_lag_tables.h new file mode 100644 index 0000000000..67b02e5e4d --- /dev/null +++ b/src/mod/codecs/mod_iSAC/pitch_lag_tables.h @@ -0,0 +1,114 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * pitch_lag_tables.h + * + * This file contains tables for the pitch filter side-info in the entropy coder. + * + */ + +#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_PITCH_LAG_TABLES_H_ +#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_PITCH_LAG_TABLES_H_ + +#include "typedefs.h" +/* header file for coding tables for the pitch filter side-info in the entropy coder */ +/********************* Pitch Filter Lag Coefficient Tables ************************/ + +/* tables for use with small pitch gain */ + +/* cdfs for quantized pitch lags */ +extern const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf1Lo[127]; +extern const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf2Lo[20]; +extern const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf3Lo[2]; +extern const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf4Lo[10]; + +extern const WebRtc_UWord16 *WebRtcIsac_kQPitchLagCdfPtrLo[4]; + +/* size of first cdf table */ +extern const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdfSizeLo[1]; + +/* index limits and ranges */ +extern const WebRtc_Word16 WebRtcIsac_kQIndexLowerLimitLagLo[4]; +extern const WebRtc_Word16 WebRtcIsac_kQIndexUpperLimitLagLo[4]; + +/* initial index for arithmetic decoder */ +extern const WebRtc_UWord16 WebRtcIsac_kQInitIndexLagLo[3]; + +/* mean values of pitch filter lags */ +extern const double WebRtcIsac_kQMeanLag2Lo[19]; +extern const double WebRtcIsac_kQMeanLag3Lo[1]; +extern const double WebRtcIsac_kQMeanLag4Lo[9]; + +extern const double WebRtcIsac_kQPitchLagStepsizeLo; + + +/* tables for use with medium pitch gain */ + +/* cdfs for quantized pitch lags */ +extern const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf1Mid[255]; +extern const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf2Mid[36]; +extern const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf3Mid[2]; +extern const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf4Mid[20]; + +extern const WebRtc_UWord16 *WebRtcIsac_kQPitchLagCdfPtrMid[4]; + +/* size of first cdf table */ +extern const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdfSizeMid[1]; + +/* index limits and ranges */ +extern const WebRtc_Word16 WebRtcIsac_kQIndexLowerLimitLagMid[4]; +extern const WebRtc_Word16 WebRtcIsac_kQIndexUpperLimitLagMid[4]; + +/* initial index for arithmetic decoder */ +extern const WebRtc_UWord16 WebRtcIsac_kQInitIndexLagMid[3]; + +/* mean values of pitch filter lags */ +extern const double WebRtcIsac_kQMeanLag2Mid[35]; +extern const double WebRtcIsac_kQMeanLag3Mid[1]; +extern const double WebRtcIsac_kQMeanLag4Mid[19]; + +extern const double WebRtcIsac_kQPitchLagStepsizeMid; + + +/* tables for use with large pitch gain */ + +/* cdfs for quantized pitch lags */ +extern const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf1Hi[511]; +extern const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf2Hi[68]; +extern const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf3Hi[2]; +extern const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf4Hi[35]; + +extern const WebRtc_UWord16 *WebRtcIsac_kQPitchLagCdfPtrHi[4]; + +/* size of first cdf table */ +extern const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdfSizeHi[1]; + +/* index limits and ranges */ +extern const WebRtc_Word16 WebRtcIsac_kQindexLowerLimitLagHi[4]; +extern const WebRtc_Word16 WebRtcIsac_kQindexUpperLimitLagHi[4]; + +/* initial index for arithmetic decoder */ +extern const WebRtc_UWord16 WebRtcIsac_kQInitIndexLagHi[3]; + +/* mean values of pitch filter lags */ +extern const double WebRtcIsac_kQMeanLag2Hi[67]; +extern const double WebRtcIsac_kQMeanLag3Hi[1]; +extern const double WebRtcIsac_kQMeanLag4Hi[34]; + +extern const double WebRtcIsac_kQPitchLagStepsizeHi; + +/* transform matrix */ +extern const double WebRtcIsac_kTransform[4][4]; + +/* transpose transform matrix */ +extern const double WebRtcIsac_kTransformTranspose[4][4]; + +#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_PITCH_LAG_TABLES_H_ */ diff --git a/src/mod/codecs/mod_iSAC/randomization_functions.c b/src/mod/codecs/mod_iSAC/randomization_functions.c new file mode 100644 index 0000000000..04271ada4d --- /dev/null +++ b/src/mod/codecs/mod_iSAC/randomization_functions.c @@ -0,0 +1,119 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + + +/* + * This file contains implementations of the randomization functions + * WebRtcSpl_IncreaseSeed() + * WebRtcSpl_RandU() + * WebRtcSpl_RandN() + * WebRtcSpl_RandUArray() + * + * The description header can be found in signal_processing_library.h + * + */ + +#include "signal_processing_library.h" + +static const WebRtc_Word16 kRandNTable[] = { + 9178, -7260, 40, 10189, 4894, -3531, -13779, 14764, + -4008, -8884, -8990, 1008, 7368, 5184, 3251, -5817, + -9786, 5963, 1770, 8066, -7135, 10772, -2298, 1361, + 6484, 2241, -8633, 792, 199, -3344, 6553, -10079, + -15040, 95, 11608, -12469, 14161, -4176, 2476, 6403, + 13685, -16005, 6646, 2239, 10916, -3004, -602, -3141, + 2142, 14144, -5829, 5305, 8209, 4713, 2697, -5112, + 16092, -1210, -2891, -6631, -5360, -11878, -6781, -2739, + -6392, 536, 10923, 10872, 5059, -4748, -7770, 5477, + 38, -1025, -2892, 1638, 6304, 14375, -11028, 1553, + -1565, 10762, -393, 4040, 5257, 12310, 6554, -4799, + 4899, -6354, 1603, -1048, -2220, 8247, -186, -8944, + -12004, 2332, 4801, -4933, 6371, 131, 8614, -5927, + -8287, -22760, 4033, -15162, 3385, 3246, 3153, -5250, + 3766, 784, 6494, -62, 3531, -1582, 15572, 662, + -3952, -330, -3196, 669, 7236, -2678, -6569, 23319, + -8645, -741, 14830, -15976, 4903, 315, -11342, 10311, + 1858, -7777, 2145, 5436, 5677, -113, -10033, 826, + -1353, 17210, 7768, 986, -1471, 8291, -4982, 8207, + -14911, -6255, -2449, -11881, -7059, -11703, -4338, 8025, + 7538, -2823, -12490, 9470, -1613, -2529, -10092, -7807, + 9480, 6970, -12844, 5123, 3532, 4816, 4803, -8455, + -5045, 14032, -4378, -1643, 5756, -11041, -2732, -16618, + -6430, -18375, -3320, 6098, 5131, -4269, -8840, 2482, + -7048, 1547, -21890, -6505, -7414, -424, -11722, 7955, + 1653, -17299, 1823, 473, -9232, 3337, 1111, 873, + 4018, -8982, 9889, 3531, -11763, -3799, 7373, -4539, + 3231, 7054, -8537, 7616, 6244, 16635, 447, -2915, + 13967, 705, -2669, -1520, -1771, -16188, 5956, 5117, + 6371, -9936, -1448, 2480, 5128, 7550, -8130, 5236, + 8213, -6443, 7707, -1950, -13811, 7218, 7031, -3883, + 67, 5731, -2874, 13480, -3743, 9298, -3280, 3552, + -4425, -18, -3785, -9988, -5357, 5477, -11794, 2117, + 1416, -9935, 3376, 802, -5079, -8243, 12652, 66, + 3653, -2368, 6781, -21895, -7227, 2487, 7839, -385, + 6646, -7016, -4658, 5531, -1705, 834, 129, 3694, + -1343, 2238, -22640, -6417, -11139, 11301, -2945, -3494, + -5626, 185, -3615, -2041, -7972, -3106, -60, -23497, + -1566, 17064, 3519, 2518, 304, -6805, -10269, 2105, + 1936, -426, -736, -8122, -1467, 4238, -6939, -13309, + 360, 7402, -7970, 12576, 3287, 12194, -6289, -16006, + 9171, 4042, -9193, 9123, -2512, 6388, -4734, -8739, + 1028, -5406, -1696, 5889, -666, -4736, 4971, 3565, + 9362, -6292, 3876, -3652, -19666, 7523, -4061, 391, + -11773, 7502, -3763, 4929, -9478, 13278, 2805, 4496, + 7814, 16419, 12455, -14773, 2127, -2746, 3763, 4847, + 3698, 6978, 4751, -6957, -3581, -45, 6252, 1513, + -4797, -7925, 11270, 16188, -2359, -5269, 9376, -10777, + 7262, 20031, -6515, -2208, -5353, 8085, -1341, -1303, + 7333, 5576, 3625, 5763, -7931, 9833, -3371, -10305, + 6534, -13539, -9971, 997, 8464, -4064, -1495, 1857, + 13624, 5458, 9490, -11086, -4524, 12022, -550, -198, + 408, -8455, -7068, 10289, 9712, -3366, 9028, -7621, + -5243, 2362, 6909, 4672, -4933, -1799, 4709, -4563, + -62, -566, 1624, -7010, 14730, -17791, -3697, -2344, + -1741, 7099, -9509, -6855, -1989, 3495, -2289, 2031, + 12784, 891, 14189, -3963, -5683, 421, -12575, 1724, + -12682, -5970, -8169, 3143, -1824, -5488, -5130, 8536, + 12799, 794, 5738, 3459, -11689, -258, -3738, -3775, + -8742, 2333, 8312, -9383, 10331, 13119, 8398, 10644, + -19433, -6446, -16277, -11793, 16284, 9345, 15222, 15834, + 2009, -7349, 130, -14547, 338, -5998, 3337, 21492, + 2406, 7703, -951, 11196, -564, 3406, 2217, 4806, + 2374, -5797, 11839, 8940, -11874, 18213, 2855, 10492 +}; + +WebRtc_UWord32 WebRtcSpl_IncreaseSeed(WebRtc_UWord32 *seed) +{ + seed[0] = (seed[0] * ((WebRtc_Word32)69069) + 1) & (WEBRTC_SPL_MAX_SEED_USED - 1); + return seed[0]; +} + +WebRtc_Word16 WebRtcSpl_RandU(WebRtc_UWord32 *seed) +{ + return (WebRtc_Word16)(WebRtcSpl_IncreaseSeed(seed) >> 16); +} + +WebRtc_Word16 WebRtcSpl_RandN(WebRtc_UWord32 *seed) +{ + return kRandNTable[WebRtcSpl_IncreaseSeed(seed) >> 23]; +} + +// Creates an array of uniformly distributed variables +WebRtc_Word16 WebRtcSpl_RandUArray(WebRtc_Word16* vector, + WebRtc_Word16 vector_length, + WebRtc_UWord32* seed) +{ + int i; + for (i = 0; i < vector_length; i++) + { + vector[i] = WebRtcSpl_RandU(seed); + } + return vector_length; +} diff --git a/src/mod/codecs/mod_iSAC/refl_coef_to_lpc.c b/src/mod/codecs/mod_iSAC/refl_coef_to_lpc.c new file mode 100644 index 0000000000..d07804dee7 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/refl_coef_to_lpc.c @@ -0,0 +1,60 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + + +/* + * This file contains the function WebRtcSpl_ReflCoefToLpc(). + * The description header can be found in signal_processing_library.h + * + */ + +#include "signal_processing_library.h" + +void WebRtcSpl_ReflCoefToLpc(G_CONST WebRtc_Word16 *k, int use_order, WebRtc_Word16 *a) +{ + WebRtc_Word16 any[WEBRTC_SPL_MAX_LPC_ORDER + 1]; + WebRtc_Word16 *aptr, *aptr2, *anyptr; + G_CONST WebRtc_Word16 *kptr; + int m, i; + + kptr = k; + *a = 4096; // i.e., (Word16_MAX >> 3)+1. + *any = *a; + a[1] = WEBRTC_SPL_RSHIFT_W16((*k), 3); + + for (m = 1; m < use_order; m++) + { + kptr++; + aptr = a; + aptr++; + aptr2 = &a[m]; + anyptr = any; + anyptr++; + + any[m + 1] = WEBRTC_SPL_RSHIFT_W16((*kptr), 3); + for (i = 0; i < m; i++) + { + *anyptr = (*aptr) + + (WebRtc_Word16)WEBRTC_SPL_MUL_16_16_RSFT((*aptr2), (*kptr), 15); + anyptr++; + aptr++; + aptr2--; + } + + aptr = a; + anyptr = any; + for (i = 0; i < (m + 2); i++) + { + *aptr = *anyptr; + aptr++; + anyptr++; + } + } +} diff --git a/src/mod/codecs/mod_iSAC/resample.c b/src/mod/codecs/mod_iSAC/resample.c new file mode 100644 index 0000000000..19d1778558 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/resample.c @@ -0,0 +1,505 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + + +/* + * This file contains the resampling functions for 22 kHz. + * The description header can be found in signal_processing_library.h + * + */ + +#include "signal_processing_library.h" +#include "resample_by_2_internal.h" + +// Declaration of internally used functions +static void WebRtcSpl_32khzTo22khzIntToShort(const WebRtc_Word32 *In, WebRtc_Word16 *Out, + const WebRtc_Word32 K); + +void WebRtcSpl_32khzTo22khzIntToInt(const WebRtc_Word32 *In, WebRtc_Word32 *Out, + const WebRtc_Word32 K); + +// interpolation coefficients +static const WebRtc_Word16 kCoefficients32To22[5][9] = { + {127, -712, 2359, -6333, 23456, 16775, -3695, 945, -154}, + {-39, 230, -830, 2785, 32366, -2324, 760, -218, 38}, + {117, -663, 2222, -6133, 26634, 13070, -3174, 831, -137}, + {-77, 457, -1677, 5958, 31175, -4136, 1405, -408, 71}, + { 98, -560, 1900, -5406, 29240, 9423, -2480, 663, -110} +}; + +////////////////////// +// 22 kHz -> 16 kHz // +////////////////////// + +// number of subblocks; options: 1, 2, 4, 5, 10 +#define SUB_BLOCKS_22_16 5 + +// 22 -> 16 resampler +void WebRtcSpl_Resample22khzTo16khz(const WebRtc_Word16* in, WebRtc_Word16* out, + WebRtcSpl_State22khzTo16khz* state, WebRtc_Word32* tmpmem) +{ + int k; + + // process two blocks of 10/SUB_BLOCKS_22_16 ms (to reduce temp buffer size) + for (k = 0; k < SUB_BLOCKS_22_16; k++) + { + ///// 22 --> 44 ///// + // WebRtc_Word16 in[220/SUB_BLOCKS_22_16] + // WebRtc_Word32 out[440/SUB_BLOCKS_22_16] + ///// + WebRtcSpl_UpBy2ShortToInt(in, 220 / SUB_BLOCKS_22_16, tmpmem + 16, state->S_22_44); + + ///// 44 --> 32 ///// + // WebRtc_Word32 in[440/SUB_BLOCKS_22_16] + // WebRtc_Word32 out[320/SUB_BLOCKS_22_16] + ///// + // copy state to and from input array + tmpmem[8] = state->S_44_32[0]; + tmpmem[9] = state->S_44_32[1]; + tmpmem[10] = state->S_44_32[2]; + tmpmem[11] = state->S_44_32[3]; + tmpmem[12] = state->S_44_32[4]; + tmpmem[13] = state->S_44_32[5]; + tmpmem[14] = state->S_44_32[6]; + tmpmem[15] = state->S_44_32[7]; + state->S_44_32[0] = tmpmem[440 / SUB_BLOCKS_22_16 + 8]; + state->S_44_32[1] = tmpmem[440 / SUB_BLOCKS_22_16 + 9]; + state->S_44_32[2] = tmpmem[440 / SUB_BLOCKS_22_16 + 10]; + state->S_44_32[3] = tmpmem[440 / SUB_BLOCKS_22_16 + 11]; + state->S_44_32[4] = tmpmem[440 / SUB_BLOCKS_22_16 + 12]; + state->S_44_32[5] = tmpmem[440 / SUB_BLOCKS_22_16 + 13]; + state->S_44_32[6] = tmpmem[440 / SUB_BLOCKS_22_16 + 14]; + state->S_44_32[7] = tmpmem[440 / SUB_BLOCKS_22_16 + 15]; + + WebRtcSpl_Resample44khzTo32khz(tmpmem + 8, tmpmem, 40 / SUB_BLOCKS_22_16); + + ///// 32 --> 16 ///// + // WebRtc_Word32 in[320/SUB_BLOCKS_22_16] + // WebRtc_Word32 out[160/SUB_BLOCKS_22_16] + ///// + WebRtcSpl_DownBy2IntToShort(tmpmem, 320 / SUB_BLOCKS_22_16, out, state->S_32_16); + + // move input/output pointers 10/SUB_BLOCKS_22_16 ms seconds ahead + in += 220 / SUB_BLOCKS_22_16; + out += 160 / SUB_BLOCKS_22_16; + } +} + +// initialize state of 22 -> 16 resampler +void WebRtcSpl_ResetResample22khzTo16khz(WebRtcSpl_State22khzTo16khz* state) +{ + int k; + for (k = 0; k < 8; k++) + { + state->S_22_44[k] = 0; + state->S_44_32[k] = 0; + state->S_32_16[k] = 0; + } +} + +////////////////////// +// 16 kHz -> 22 kHz // +////////////////////// + +// number of subblocks; options: 1, 2, 4, 5, 10 +#define SUB_BLOCKS_16_22 4 + +// 16 -> 22 resampler +void WebRtcSpl_Resample16khzTo22khz(const WebRtc_Word16* in, WebRtc_Word16* out, + WebRtcSpl_State16khzTo22khz* state, WebRtc_Word32* tmpmem) +{ + int k; + + // process two blocks of 10/SUB_BLOCKS_16_22 ms (to reduce temp buffer size) + for (k = 0; k < SUB_BLOCKS_16_22; k++) + { + ///// 16 --> 32 ///// + // WebRtc_Word16 in[160/SUB_BLOCKS_16_22] + // WebRtc_Word32 out[320/SUB_BLOCKS_16_22] + ///// + WebRtcSpl_UpBy2ShortToInt(in, 160 / SUB_BLOCKS_16_22, tmpmem + 8, state->S_16_32); + + ///// 32 --> 22 ///// + // WebRtc_Word32 in[320/SUB_BLOCKS_16_22] + // WebRtc_Word32 out[220/SUB_BLOCKS_16_22] + ///// + // copy state to and from input array + tmpmem[0] = state->S_32_22[0]; + tmpmem[1] = state->S_32_22[1]; + tmpmem[2] = state->S_32_22[2]; + tmpmem[3] = state->S_32_22[3]; + tmpmem[4] = state->S_32_22[4]; + tmpmem[5] = state->S_32_22[5]; + tmpmem[6] = state->S_32_22[6]; + tmpmem[7] = state->S_32_22[7]; + state->S_32_22[0] = tmpmem[320 / SUB_BLOCKS_16_22]; + state->S_32_22[1] = tmpmem[320 / SUB_BLOCKS_16_22 + 1]; + state->S_32_22[2] = tmpmem[320 / SUB_BLOCKS_16_22 + 2]; + state->S_32_22[3] = tmpmem[320 / SUB_BLOCKS_16_22 + 3]; + state->S_32_22[4] = tmpmem[320 / SUB_BLOCKS_16_22 + 4]; + state->S_32_22[5] = tmpmem[320 / SUB_BLOCKS_16_22 + 5]; + state->S_32_22[6] = tmpmem[320 / SUB_BLOCKS_16_22 + 6]; + state->S_32_22[7] = tmpmem[320 / SUB_BLOCKS_16_22 + 7]; + + WebRtcSpl_32khzTo22khzIntToShort(tmpmem, out, 20 / SUB_BLOCKS_16_22); + + // move input/output pointers 10/SUB_BLOCKS_16_22 ms seconds ahead + in += 160 / SUB_BLOCKS_16_22; + out += 220 / SUB_BLOCKS_16_22; + } +} + +// initialize state of 16 -> 22 resampler +void WebRtcSpl_ResetResample16khzTo22khz(WebRtcSpl_State16khzTo22khz* state) +{ + int k; + for (k = 0; k < 8; k++) + { + state->S_16_32[k] = 0; + state->S_32_22[k] = 0; + } +} + +////////////////////// +// 22 kHz -> 8 kHz // +////////////////////// + +// number of subblocks; options: 1, 2, 5, 10 +#define SUB_BLOCKS_22_8 2 + +// 22 -> 8 resampler +void WebRtcSpl_Resample22khzTo8khz(const WebRtc_Word16* in, WebRtc_Word16* out, + WebRtcSpl_State22khzTo8khz* state, WebRtc_Word32* tmpmem) +{ + int k; + + // process two blocks of 10/SUB_BLOCKS_22_8 ms (to reduce temp buffer size) + for (k = 0; k < SUB_BLOCKS_22_8; k++) + { + ///// 22 --> 22 lowpass ///// + // WebRtc_Word16 in[220/SUB_BLOCKS_22_8] + // WebRtc_Word32 out[220/SUB_BLOCKS_22_8] + ///// + WebRtcSpl_LPBy2ShortToInt(in, 220 / SUB_BLOCKS_22_8, tmpmem + 16, state->S_22_22); + + ///// 22 --> 16 ///// + // WebRtc_Word32 in[220/SUB_BLOCKS_22_8] + // WebRtc_Word32 out[160/SUB_BLOCKS_22_8] + ///// + // copy state to and from input array + tmpmem[8] = state->S_22_16[0]; + tmpmem[9] = state->S_22_16[1]; + tmpmem[10] = state->S_22_16[2]; + tmpmem[11] = state->S_22_16[3]; + tmpmem[12] = state->S_22_16[4]; + tmpmem[13] = state->S_22_16[5]; + tmpmem[14] = state->S_22_16[6]; + tmpmem[15] = state->S_22_16[7]; + state->S_22_16[0] = tmpmem[220 / SUB_BLOCKS_22_8 + 8]; + state->S_22_16[1] = tmpmem[220 / SUB_BLOCKS_22_8 + 9]; + state->S_22_16[2] = tmpmem[220 / SUB_BLOCKS_22_8 + 10]; + state->S_22_16[3] = tmpmem[220 / SUB_BLOCKS_22_8 + 11]; + state->S_22_16[4] = tmpmem[220 / SUB_BLOCKS_22_8 + 12]; + state->S_22_16[5] = tmpmem[220 / SUB_BLOCKS_22_8 + 13]; + state->S_22_16[6] = tmpmem[220 / SUB_BLOCKS_22_8 + 14]; + state->S_22_16[7] = tmpmem[220 / SUB_BLOCKS_22_8 + 15]; + + WebRtcSpl_Resample44khzTo32khz(tmpmem + 8, tmpmem, 20 / SUB_BLOCKS_22_8); + + ///// 16 --> 8 ///// + // WebRtc_Word32 in[160/SUB_BLOCKS_22_8] + // WebRtc_Word32 out[80/SUB_BLOCKS_22_8] + ///// + WebRtcSpl_DownBy2IntToShort(tmpmem, 160 / SUB_BLOCKS_22_8, out, state->S_16_8); + + // move input/output pointers 10/SUB_BLOCKS_22_8 ms seconds ahead + in += 220 / SUB_BLOCKS_22_8; + out += 80 / SUB_BLOCKS_22_8; + } +} + +// initialize state of 22 -> 8 resampler +void WebRtcSpl_ResetResample22khzTo8khz(WebRtcSpl_State22khzTo8khz* state) +{ + int k; + for (k = 0; k < 8; k++) + { + state->S_22_22[k] = 0; + state->S_22_22[k + 8] = 0; + state->S_22_16[k] = 0; + state->S_16_8[k] = 0; + } +} + +////////////////////// +// 8 kHz -> 22 kHz // +////////////////////// + +// number of subblocks; options: 1, 2, 5, 10 +#define SUB_BLOCKS_8_22 2 + +// 8 -> 22 resampler +void WebRtcSpl_Resample8khzTo22khz(const WebRtc_Word16* in, WebRtc_Word16* out, + WebRtcSpl_State8khzTo22khz* state, WebRtc_Word32* tmpmem) +{ + int k; + + // process two blocks of 10/SUB_BLOCKS_8_22 ms (to reduce temp buffer size) + for (k = 0; k < SUB_BLOCKS_8_22; k++) + { + ///// 8 --> 16 ///// + // WebRtc_Word16 in[80/SUB_BLOCKS_8_22] + // WebRtc_Word32 out[160/SUB_BLOCKS_8_22] + ///// + WebRtcSpl_UpBy2ShortToInt(in, 80 / SUB_BLOCKS_8_22, tmpmem + 18, state->S_8_16); + + ///// 16 --> 11 ///// + // WebRtc_Word32 in[160/SUB_BLOCKS_8_22] + // WebRtc_Word32 out[110/SUB_BLOCKS_8_22] + ///// + // copy state to and from input array + tmpmem[10] = state->S_16_11[0]; + tmpmem[11] = state->S_16_11[1]; + tmpmem[12] = state->S_16_11[2]; + tmpmem[13] = state->S_16_11[3]; + tmpmem[14] = state->S_16_11[4]; + tmpmem[15] = state->S_16_11[5]; + tmpmem[16] = state->S_16_11[6]; + tmpmem[17] = state->S_16_11[7]; + state->S_16_11[0] = tmpmem[160 / SUB_BLOCKS_8_22 + 10]; + state->S_16_11[1] = tmpmem[160 / SUB_BLOCKS_8_22 + 11]; + state->S_16_11[2] = tmpmem[160 / SUB_BLOCKS_8_22 + 12]; + state->S_16_11[3] = tmpmem[160 / SUB_BLOCKS_8_22 + 13]; + state->S_16_11[4] = tmpmem[160 / SUB_BLOCKS_8_22 + 14]; + state->S_16_11[5] = tmpmem[160 / SUB_BLOCKS_8_22 + 15]; + state->S_16_11[6] = tmpmem[160 / SUB_BLOCKS_8_22 + 16]; + state->S_16_11[7] = tmpmem[160 / SUB_BLOCKS_8_22 + 17]; + + WebRtcSpl_32khzTo22khzIntToInt(tmpmem + 10, tmpmem, 10 / SUB_BLOCKS_8_22); + + ///// 11 --> 22 ///// + // WebRtc_Word32 in[110/SUB_BLOCKS_8_22] + // WebRtc_Word16 out[220/SUB_BLOCKS_8_22] + ///// + WebRtcSpl_UpBy2IntToShort(tmpmem, 110 / SUB_BLOCKS_8_22, out, state->S_11_22); + + // move input/output pointers 10/SUB_BLOCKS_8_22 ms seconds ahead + in += 80 / SUB_BLOCKS_8_22; + out += 220 / SUB_BLOCKS_8_22; + } +} + +// initialize state of 8 -> 22 resampler +void WebRtcSpl_ResetResample8khzTo22khz(WebRtcSpl_State8khzTo22khz* state) +{ + int k; + for (k = 0; k < 8; k++) + { + state->S_8_16[k] = 0; + state->S_16_11[k] = 0; + state->S_11_22[k] = 0; + } +} + +// compute two inner-products and store them to output array +static void WebRtcSpl_DotProdIntToInt(const WebRtc_Word32* in1, const WebRtc_Word32* in2, + const WebRtc_Word16* coef_ptr, WebRtc_Word32* out1, + WebRtc_Word32* out2) +{ + WebRtc_Word32 tmp1 = 16384; + WebRtc_Word32 tmp2 = 16384; + WebRtc_Word16 coef; + + coef = coef_ptr[0]; + tmp1 += coef * in1[0]; + tmp2 += coef * in2[-0]; + + coef = coef_ptr[1]; + tmp1 += coef * in1[1]; + tmp2 += coef * in2[-1]; + + coef = coef_ptr[2]; + tmp1 += coef * in1[2]; + tmp2 += coef * in2[-2]; + + coef = coef_ptr[3]; + tmp1 += coef * in1[3]; + tmp2 += coef * in2[-3]; + + coef = coef_ptr[4]; + tmp1 += coef * in1[4]; + tmp2 += coef * in2[-4]; + + coef = coef_ptr[5]; + tmp1 += coef * in1[5]; + tmp2 += coef * in2[-5]; + + coef = coef_ptr[6]; + tmp1 += coef * in1[6]; + tmp2 += coef * in2[-6]; + + coef = coef_ptr[7]; + tmp1 += coef * in1[7]; + tmp2 += coef * in2[-7]; + + coef = coef_ptr[8]; + *out1 = tmp1 + coef * in1[8]; + *out2 = tmp2 + coef * in2[-8]; +} + +// compute two inner-products and store them to output array +static void WebRtcSpl_DotProdIntToShort(const WebRtc_Word32* in1, const WebRtc_Word32* in2, + const WebRtc_Word16* coef_ptr, WebRtc_Word16* out1, + WebRtc_Word16* out2) +{ + WebRtc_Word32 tmp1 = 16384; + WebRtc_Word32 tmp2 = 16384; + WebRtc_Word16 coef; + + coef = coef_ptr[0]; + tmp1 += coef * in1[0]; + tmp2 += coef * in2[-0]; + + coef = coef_ptr[1]; + tmp1 += coef * in1[1]; + tmp2 += coef * in2[-1]; + + coef = coef_ptr[2]; + tmp1 += coef * in1[2]; + tmp2 += coef * in2[-2]; + + coef = coef_ptr[3]; + tmp1 += coef * in1[3]; + tmp2 += coef * in2[-3]; + + coef = coef_ptr[4]; + tmp1 += coef * in1[4]; + tmp2 += coef * in2[-4]; + + coef = coef_ptr[5]; + tmp1 += coef * in1[5]; + tmp2 += coef * in2[-5]; + + coef = coef_ptr[6]; + tmp1 += coef * in1[6]; + tmp2 += coef * in2[-6]; + + coef = coef_ptr[7]; + tmp1 += coef * in1[7]; + tmp2 += coef * in2[-7]; + + coef = coef_ptr[8]; + tmp1 += coef * in1[8]; + tmp2 += coef * in2[-8]; + + // scale down, round and saturate + tmp1 >>= 15; + if (tmp1 > (WebRtc_Word32)0x00007FFF) + tmp1 = 0x00007FFF; + if (tmp1 < (WebRtc_Word32)0xFFFF8000) + tmp1 = 0xFFFF8000; + tmp2 >>= 15; + if (tmp2 > (WebRtc_Word32)0x00007FFF) + tmp2 = 0x00007FFF; + if (tmp2 < (WebRtc_Word32)0xFFFF8000) + tmp2 = 0xFFFF8000; + *out1 = (WebRtc_Word16)tmp1; + *out2 = (WebRtc_Word16)tmp2; +} + +// Resampling ratio: 11/16 +// input: WebRtc_Word32 (normalized, not saturated) :: size 16 * K +// output: WebRtc_Word32 (shifted 15 positions to the left, + offset 16384) :: size 11 * K +// K: Number of blocks + +void WebRtcSpl_32khzTo22khzIntToInt(const WebRtc_Word32* In, + WebRtc_Word32* Out, + const WebRtc_Word32 K) +{ + ///////////////////////////////////////////////////////////// + // Filter operation: + // + // Perform resampling (16 input samples -> 11 output samples); + // process in sub blocks of size 16 samples. + WebRtc_Word32 m; + + for (m = 0; m < K; m++) + { + // first output sample + Out[0] = ((WebRtc_Word32)In[3] << 15) + (1 << 14); + + // sum and accumulate filter coefficients and input samples + WebRtcSpl_DotProdIntToInt(&In[0], &In[22], kCoefficients32To22[0], &Out[1], &Out[10]); + + // sum and accumulate filter coefficients and input samples + WebRtcSpl_DotProdIntToInt(&In[2], &In[20], kCoefficients32To22[1], &Out[2], &Out[9]); + + // sum and accumulate filter coefficients and input samples + WebRtcSpl_DotProdIntToInt(&In[3], &In[19], kCoefficients32To22[2], &Out[3], &Out[8]); + + // sum and accumulate filter coefficients and input samples + WebRtcSpl_DotProdIntToInt(&In[5], &In[17], kCoefficients32To22[3], &Out[4], &Out[7]); + + // sum and accumulate filter coefficients and input samples + WebRtcSpl_DotProdIntToInt(&In[6], &In[16], kCoefficients32To22[4], &Out[5], &Out[6]); + + // update pointers + In += 16; + Out += 11; + } +} + +// Resampling ratio: 11/16 +// input: WebRtc_Word32 (normalized, not saturated) :: size 16 * K +// output: WebRtc_Word16 (saturated) :: size 11 * K +// K: Number of blocks + +void WebRtcSpl_32khzTo22khzIntToShort(const WebRtc_Word32 *In, + WebRtc_Word16 *Out, + const WebRtc_Word32 K) +{ + ///////////////////////////////////////////////////////////// + // Filter operation: + // + // Perform resampling (16 input samples -> 11 output samples); + // process in sub blocks of size 16 samples. + WebRtc_Word32 tmp; + WebRtc_Word32 m; + + for (m = 0; m < K; m++) + { + // first output sample + tmp = In[3]; + if (tmp > (WebRtc_Word32)0x00007FFF) + tmp = 0x00007FFF; + if (tmp < (WebRtc_Word32)0xFFFF8000) + tmp = 0xFFFF8000; + Out[0] = (WebRtc_Word16)tmp; + + // sum and accumulate filter coefficients and input samples + WebRtcSpl_DotProdIntToShort(&In[0], &In[22], kCoefficients32To22[0], &Out[1], &Out[10]); + + // sum and accumulate filter coefficients and input samples + WebRtcSpl_DotProdIntToShort(&In[2], &In[20], kCoefficients32To22[1], &Out[2], &Out[9]); + + // sum and accumulate filter coefficients and input samples + WebRtcSpl_DotProdIntToShort(&In[3], &In[19], kCoefficients32To22[2], &Out[3], &Out[8]); + + // sum and accumulate filter coefficients and input samples + WebRtcSpl_DotProdIntToShort(&In[5], &In[17], kCoefficients32To22[3], &Out[4], &Out[7]); + + // sum and accumulate filter coefficients and input samples + WebRtcSpl_DotProdIntToShort(&In[6], &In[16], kCoefficients32To22[4], &Out[5], &Out[6]); + + // update pointers + In += 16; + Out += 11; + } +} diff --git a/src/mod/codecs/mod_iSAC/resample_48khz.c b/src/mod/codecs/mod_iSAC/resample_48khz.c new file mode 100644 index 0000000000..31cbe6b6a9 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/resample_48khz.c @@ -0,0 +1,186 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + + +/* + * This file contains resampling functions between 48 kHz and nb/wb. + * The description header can be found in signal_processing_library.h + * + */ + +#include +#include "signal_processing_library.h" +#include "resample_by_2_internal.h" + +//////////////////////////// +///// 48 kHz -> 16 kHz ///// +//////////////////////////// + +// 48 -> 16 resampler +void WebRtcSpl_Resample48khzTo16khz(const WebRtc_Word16* in, WebRtc_Word16* out, + WebRtcSpl_State48khzTo16khz* state, WebRtc_Word32* tmpmem) +{ + ///// 48 --> 48(LP) ///// + // WebRtc_Word16 in[480] + // WebRtc_Word32 out[480] + ///// + WebRtcSpl_LPBy2ShortToInt(in, 480, tmpmem + 16, state->S_48_48); + + ///// 48 --> 32 ///// + // WebRtc_Word32 in[480] + // WebRtc_Word32 out[320] + ///// + // copy state to and from input array + memcpy(tmpmem + 8, state->S_48_32, 8 * sizeof(WebRtc_Word32)); + memcpy(state->S_48_32, tmpmem + 488, 8 * sizeof(WebRtc_Word32)); + WebRtcSpl_Resample48khzTo32khz(tmpmem + 8, tmpmem, 160); + + ///// 32 --> 16 ///// + // WebRtc_Word32 in[320] + // WebRtc_Word16 out[160] + ///// + WebRtcSpl_DownBy2IntToShort(tmpmem, 320, out, state->S_32_16); +} + +// initialize state of 48 -> 16 resampler +void WebRtcSpl_ResetResample48khzTo16khz(WebRtcSpl_State48khzTo16khz* state) +{ + memset(state->S_48_48, 0, 16 * sizeof(WebRtc_Word32)); + memset(state->S_48_32, 0, 8 * sizeof(WebRtc_Word32)); + memset(state->S_32_16, 0, 8 * sizeof(WebRtc_Word32)); +} + +//////////////////////////// +///// 16 kHz -> 48 kHz ///// +//////////////////////////// + +// 16 -> 48 resampler +void WebRtcSpl_Resample16khzTo48khz(const WebRtc_Word16* in, WebRtc_Word16* out, + WebRtcSpl_State16khzTo48khz* state, WebRtc_Word32* tmpmem) +{ + ///// 16 --> 32 ///// + // WebRtc_Word16 in[160] + // WebRtc_Word32 out[320] + ///// + WebRtcSpl_UpBy2ShortToInt(in, 160, tmpmem + 16, state->S_16_32); + + ///// 32 --> 24 ///// + // WebRtc_Word32 in[320] + // WebRtc_Word32 out[240] + // copy state to and from input array + ///// + memcpy(tmpmem + 8, state->S_32_24, 8 * sizeof(WebRtc_Word32)); + memcpy(state->S_32_24, tmpmem + 328, 8 * sizeof(WebRtc_Word32)); + WebRtcSpl_Resample32khzTo24khz(tmpmem + 8, tmpmem, 80); + + ///// 24 --> 48 ///// + // WebRtc_Word32 in[240] + // WebRtc_Word16 out[480] + ///// + WebRtcSpl_UpBy2IntToShort(tmpmem, 240, out, state->S_24_48); +} + +// initialize state of 16 -> 48 resampler +void WebRtcSpl_ResetResample16khzTo48khz(WebRtcSpl_State16khzTo48khz* state) +{ + memset(state->S_16_32, 0, 8 * sizeof(WebRtc_Word32)); + memset(state->S_32_24, 0, 8 * sizeof(WebRtc_Word32)); + memset(state->S_24_48, 0, 8 * sizeof(WebRtc_Word32)); +} + +//////////////////////////// +///// 48 kHz -> 8 kHz ///// +//////////////////////////// + +// 48 -> 8 resampler +void WebRtcSpl_Resample48khzTo8khz(const WebRtc_Word16* in, WebRtc_Word16* out, + WebRtcSpl_State48khzTo8khz* state, WebRtc_Word32* tmpmem) +{ + ///// 48 --> 24 ///// + // WebRtc_Word16 in[480] + // WebRtc_Word32 out[240] + ///// + WebRtcSpl_DownBy2ShortToInt(in, 480, tmpmem + 256, state->S_48_24); + + ///// 24 --> 24(LP) ///// + // WebRtc_Word32 in[240] + // WebRtc_Word32 out[240] + ///// + WebRtcSpl_LPBy2IntToInt(tmpmem + 256, 240, tmpmem + 16, state->S_24_24); + + ///// 24 --> 16 ///// + // WebRtc_Word32 in[240] + // WebRtc_Word32 out[160] + ///// + // copy state to and from input array + memcpy(tmpmem + 8, state->S_24_16, 8 * sizeof(WebRtc_Word32)); + memcpy(state->S_24_16, tmpmem + 248, 8 * sizeof(WebRtc_Word32)); + WebRtcSpl_Resample48khzTo32khz(tmpmem + 8, tmpmem, 80); + + ///// 16 --> 8 ///// + // WebRtc_Word32 in[160] + // WebRtc_Word16 out[80] + ///// + WebRtcSpl_DownBy2IntToShort(tmpmem, 160, out, state->S_16_8); +} + +// initialize state of 48 -> 8 resampler +void WebRtcSpl_ResetResample48khzTo8khz(WebRtcSpl_State48khzTo8khz* state) +{ + memset(state->S_48_24, 0, 8 * sizeof(WebRtc_Word32)); + memset(state->S_24_24, 0, 16 * sizeof(WebRtc_Word32)); + memset(state->S_24_16, 0, 8 * sizeof(WebRtc_Word32)); + memset(state->S_16_8, 0, 8 * sizeof(WebRtc_Word32)); +} + +//////////////////////////// +///// 8 kHz -> 48 kHz ///// +//////////////////////////// + +// 8 -> 48 resampler +void WebRtcSpl_Resample8khzTo48khz(const WebRtc_Word16* in, WebRtc_Word16* out, + WebRtcSpl_State8khzTo48khz* state, WebRtc_Word32* tmpmem) +{ + ///// 8 --> 16 ///// + // WebRtc_Word16 in[80] + // WebRtc_Word32 out[160] + ///// + WebRtcSpl_UpBy2ShortToInt(in, 80, tmpmem + 264, state->S_8_16); + + ///// 16 --> 12 ///// + // WebRtc_Word32 in[160] + // WebRtc_Word32 out[120] + ///// + // copy state to and from input array + memcpy(tmpmem + 256, state->S_16_12, 8 * sizeof(WebRtc_Word32)); + memcpy(state->S_16_12, tmpmem + 416, 8 * sizeof(WebRtc_Word32)); + WebRtcSpl_Resample32khzTo24khz(tmpmem + 256, tmpmem + 240, 40); + + ///// 12 --> 24 ///// + // WebRtc_Word32 in[120] + // WebRtc_Word16 out[240] + ///// + WebRtcSpl_UpBy2IntToInt(tmpmem + 240, 120, tmpmem, state->S_12_24); + + ///// 24 --> 48 ///// + // WebRtc_Word32 in[240] + // WebRtc_Word16 out[480] + ///// + WebRtcSpl_UpBy2IntToShort(tmpmem, 240, out, state->S_24_48); +} + +// initialize state of 8 -> 48 resampler +void WebRtcSpl_ResetResample8khzTo48khz(WebRtcSpl_State8khzTo48khz* state) +{ + memset(state->S_8_16, 0, 8 * sizeof(WebRtc_Word32)); + memset(state->S_16_12, 0, 8 * sizeof(WebRtc_Word32)); + memset(state->S_12_24, 0, 8 * sizeof(WebRtc_Word32)); + memset(state->S_24_48, 0, 8 * sizeof(WebRtc_Word32)); +} diff --git a/src/mod/codecs/mod_iSAC/resample_by_2.c b/src/mod/codecs/mod_iSAC/resample_by_2.c new file mode 100644 index 0000000000..e239db75c0 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/resample_by_2.c @@ -0,0 +1,181 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + + +/* + * This file contains the resampling by two functions. + * The description header can be found in signal_processing_library.h + * + */ + +#include "signal_processing_library.h" + +#ifdef WEBRTC_ARCH_ARM_V7A + +// allpass filter coefficients. +static const WebRtc_UWord32 kResampleAllpass1[3] = {3284, 24441, 49528 << 15}; +static const WebRtc_UWord32 kResampleAllpass2[3] = + {12199, 37471 << 15, 60255 << 15}; + +// Multiply two 32-bit values and accumulate to another input value. +// Return: state + ((diff * tbl_value) >> 16) + +static __inline WebRtc_Word32 MUL_ACCUM_1(WebRtc_Word32 tbl_value, + WebRtc_Word32 diff, + WebRtc_Word32 state) { + WebRtc_Word32 result; + __asm__("smlawb %r0, %r1, %r2, %r3": "=r"(result): "r"(diff), + "r"(tbl_value), "r"(state)); + return result; +} + +// Multiply two 32-bit values and accumulate to another input value. +// Return: Return: state + (((diff << 1) * tbl_value) >> 32) +// +// The reason to introduce this function is that, in case we can't use smlawb +// instruction (in MUL_ACCUM_1) due to input value range, we can still use +// smmla to save some cycles. + +static __inline WebRtc_Word32 MUL_ACCUM_2(WebRtc_Word32 tbl_value, + WebRtc_Word32 diff, + WebRtc_Word32 state) { + WebRtc_Word32 result; + __asm__("smmla %r0, %r1, %r2, %r3": "=r"(result): "r"(diff << 1), + "r"(tbl_value), "r"(state)); + return result; +} + +#else + +// allpass filter coefficients. +static const WebRtc_UWord16 kResampleAllpass1[3] = {3284, 24441, 49528}; +static const WebRtc_UWord16 kResampleAllpass2[3] = {12199, 37471, 60255}; + +// Multiply a 32-bit value with a 16-bit value and accumulate to another input: +#define MUL_ACCUM_1(a, b, c) WEBRTC_SPL_SCALEDIFF32(a, b, c) +#define MUL_ACCUM_2(a, b, c) WEBRTC_SPL_SCALEDIFF32(a, b, c) + +#endif // WEBRTC_ARCH_ARM_V7A + + +// decimator +void WebRtcSpl_DownsampleBy2(const WebRtc_Word16* in, const WebRtc_Word16 len, + WebRtc_Word16* out, WebRtc_Word32* filtState) { + WebRtc_Word32 tmp1, tmp2, diff, in32, out32; + WebRtc_Word16 i; + + register WebRtc_Word32 state0 = filtState[0]; + register WebRtc_Word32 state1 = filtState[1]; + register WebRtc_Word32 state2 = filtState[2]; + register WebRtc_Word32 state3 = filtState[3]; + register WebRtc_Word32 state4 = filtState[4]; + register WebRtc_Word32 state5 = filtState[5]; + register WebRtc_Word32 state6 = filtState[6]; + register WebRtc_Word32 state7 = filtState[7]; + + for (i = (len >> 1); i > 0; i--) { + // lower allpass filter + in32 = (WebRtc_Word32)(*in++) << 10; + diff = in32 - state1; + tmp1 = MUL_ACCUM_1(kResampleAllpass2[0], diff, state0); + state0 = in32; + diff = tmp1 - state2; + tmp2 = MUL_ACCUM_2(kResampleAllpass2[1], diff, state1); + state1 = tmp1; + diff = tmp2 - state3; + state3 = MUL_ACCUM_2(kResampleAllpass2[2], diff, state2); + state2 = tmp2; + + // upper allpass filter + in32 = (WebRtc_Word32)(*in++) << 10; + diff = in32 - state5; + tmp1 = MUL_ACCUM_1(kResampleAllpass1[0], diff, state4); + state4 = in32; + diff = tmp1 - state6; + tmp2 = MUL_ACCUM_1(kResampleAllpass1[1], diff, state5); + state5 = tmp1; + diff = tmp2 - state7; + state7 = MUL_ACCUM_2(kResampleAllpass1[2], diff, state6); + state6 = tmp2; + + // add two allpass outputs, divide by two and round + out32 = (state3 + state7 + 1024) >> 11; + + // limit amplitude to prevent wrap-around, and write to output array + *out++ = WebRtcSpl_SatW32ToW16(out32); + } + + filtState[0] = state0; + filtState[1] = state1; + filtState[2] = state2; + filtState[3] = state3; + filtState[4] = state4; + filtState[5] = state5; + filtState[6] = state6; + filtState[7] = state7; +} + + +void WebRtcSpl_UpsampleBy2(const WebRtc_Word16* in, WebRtc_Word16 len, + WebRtc_Word16* out, WebRtc_Word32* filtState) { + WebRtc_Word32 tmp1, tmp2, diff, in32, out32; + WebRtc_Word16 i; + + register WebRtc_Word32 state0 = filtState[0]; + register WebRtc_Word32 state1 = filtState[1]; + register WebRtc_Word32 state2 = filtState[2]; + register WebRtc_Word32 state3 = filtState[3]; + register WebRtc_Word32 state4 = filtState[4]; + register WebRtc_Word32 state5 = filtState[5]; + register WebRtc_Word32 state6 = filtState[6]; + register WebRtc_Word32 state7 = filtState[7]; + + for (i = len; i > 0; i--) { + // lower allpass filter + in32 = (WebRtc_Word32)(*in++) << 10; + diff = in32 - state1; + tmp1 = MUL_ACCUM_1(kResampleAllpass1[0], diff, state0); + state0 = in32; + diff = tmp1 - state2; + tmp2 = MUL_ACCUM_1(kResampleAllpass1[1], diff, state1); + state1 = tmp1; + diff = tmp2 - state3; + state3 = MUL_ACCUM_2(kResampleAllpass1[2], diff, state2); + state2 = tmp2; + + // round; limit amplitude to prevent wrap-around; write to output array + out32 = (state3 + 512) >> 10; + *out++ = WebRtcSpl_SatW32ToW16(out32); + + // upper allpass filter + diff = in32 - state5; + tmp1 = MUL_ACCUM_1(kResampleAllpass2[0], diff, state4); + state4 = in32; + diff = tmp1 - state6; + tmp2 = MUL_ACCUM_2(kResampleAllpass2[1], diff, state5); + state5 = tmp1; + diff = tmp2 - state7; + state7 = MUL_ACCUM_2(kResampleAllpass2[2], diff, state6); + state6 = tmp2; + + // round; limit amplitude to prevent wrap-around; write to output array + out32 = (state7 + 512) >> 10; + *out++ = WebRtcSpl_SatW32ToW16(out32); + } + + filtState[0] = state0; + filtState[1] = state1; + filtState[2] = state2; + filtState[3] = state3; + filtState[4] = state4; + filtState[5] = state5; + filtState[6] = state6; + filtState[7] = state7; +} diff --git a/src/mod/codecs/mod_iSAC/resample_by_2_internal.c b/src/mod/codecs/mod_iSAC/resample_by_2_internal.c new file mode 100644 index 0000000000..cbd2395803 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/resample_by_2_internal.c @@ -0,0 +1,679 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + + +/* + * This header file contains some internal resampling functions. + * + */ + +#include "resample_by_2_internal.h" + +// allpass filter coefficients. +static const WebRtc_Word16 kResampleAllpass[2][3] = { + {821, 6110, 12382}, + {3050, 9368, 15063} +}; + +// +// decimator +// input: WebRtc_Word32 (shifted 15 positions to the left, + offset 16384) OVERWRITTEN! +// output: WebRtc_Word16 (saturated) (of length len/2) +// state: filter state array; length = 8 + +void WebRtcSpl_DownBy2IntToShort(WebRtc_Word32 *in, WebRtc_Word32 len, WebRtc_Word16 *out, + WebRtc_Word32 *state) +{ + WebRtc_Word32 tmp0, tmp1, diff; + WebRtc_Word32 i; + + len >>= 1; + + // lower allpass filter (operates on even input samples) + for (i = 0; i < len; i++) + { + tmp0 = in[i << 1]; + diff = tmp0 - state[1]; + // scale down and round + diff = (diff + (1 << 13)) >> 14; + tmp1 = state[0] + diff * kResampleAllpass[1][0]; + state[0] = tmp0; + diff = tmp1 - state[2]; + // scale down and truncate + diff = diff >> 14; + if (diff < 0) + diff += 1; + tmp0 = state[1] + diff * kResampleAllpass[1][1]; + state[1] = tmp1; + diff = tmp0 - state[3]; + // scale down and truncate + diff = diff >> 14; + if (diff < 0) + diff += 1; + state[3] = state[2] + diff * kResampleAllpass[1][2]; + state[2] = tmp0; + + // divide by two and store temporarily + in[i << 1] = (state[3] >> 1); + } + + in++; + + // upper allpass filter (operates on odd input samples) + for (i = 0; i < len; i++) + { + tmp0 = in[i << 1]; + diff = tmp0 - state[5]; + // scale down and round + diff = (diff + (1 << 13)) >> 14; + tmp1 = state[4] + diff * kResampleAllpass[0][0]; + state[4] = tmp0; + diff = tmp1 - state[6]; + // scale down and round + diff = diff >> 14; + if (diff < 0) + diff += 1; + tmp0 = state[5] + diff * kResampleAllpass[0][1]; + state[5] = tmp1; + diff = tmp0 - state[7]; + // scale down and truncate + diff = diff >> 14; + if (diff < 0) + diff += 1; + state[7] = state[6] + diff * kResampleAllpass[0][2]; + state[6] = tmp0; + + // divide by two and store temporarily + in[i << 1] = (state[7] >> 1); + } + + in--; + + // combine allpass outputs + for (i = 0; i < len; i += 2) + { + // divide by two, add both allpass outputs and round + tmp0 = (in[i << 1] + in[(i << 1) + 1]) >> 15; + tmp1 = (in[(i << 1) + 2] + in[(i << 1) + 3]) >> 15; + if (tmp0 > (WebRtc_Word32)0x00007FFF) + tmp0 = 0x00007FFF; + if (tmp0 < (WebRtc_Word32)0xFFFF8000) + tmp0 = 0xFFFF8000; + out[i] = (WebRtc_Word16)tmp0; + if (tmp1 > (WebRtc_Word32)0x00007FFF) + tmp1 = 0x00007FFF; + if (tmp1 < (WebRtc_Word32)0xFFFF8000) + tmp1 = 0xFFFF8000; + out[i + 1] = (WebRtc_Word16)tmp1; + } +} + +// +// decimator +// input: WebRtc_Word16 +// output: WebRtc_Word32 (shifted 15 positions to the left, + offset 16384) (of length len/2) +// state: filter state array; length = 8 + +void WebRtcSpl_DownBy2ShortToInt(const WebRtc_Word16 *in, + WebRtc_Word32 len, + WebRtc_Word32 *out, + WebRtc_Word32 *state) +{ + WebRtc_Word32 tmp0, tmp1, diff; + WebRtc_Word32 i; + + len >>= 1; + + // lower allpass filter (operates on even input samples) + for (i = 0; i < len; i++) + { + tmp0 = ((WebRtc_Word32)in[i << 1] << 15) + (1 << 14); + diff = tmp0 - state[1]; + // scale down and round + diff = (diff + (1 << 13)) >> 14; + tmp1 = state[0] + diff * kResampleAllpass[1][0]; + state[0] = tmp0; + diff = tmp1 - state[2]; + // scale down and truncate + diff = diff >> 14; + if (diff < 0) + diff += 1; + tmp0 = state[1] + diff * kResampleAllpass[1][1]; + state[1] = tmp1; + diff = tmp0 - state[3]; + // scale down and truncate + diff = diff >> 14; + if (diff < 0) + diff += 1; + state[3] = state[2] + diff * kResampleAllpass[1][2]; + state[2] = tmp0; + + // divide by two and store temporarily + out[i] = (state[3] >> 1); + } + + in++; + + // upper allpass filter (operates on odd input samples) + for (i = 0; i < len; i++) + { + tmp0 = ((WebRtc_Word32)in[i << 1] << 15) + (1 << 14); + diff = tmp0 - state[5]; + // scale down and round + diff = (diff + (1 << 13)) >> 14; + tmp1 = state[4] + diff * kResampleAllpass[0][0]; + state[4] = tmp0; + diff = tmp1 - state[6]; + // scale down and round + diff = diff >> 14; + if (diff < 0) + diff += 1; + tmp0 = state[5] + diff * kResampleAllpass[0][1]; + state[5] = tmp1; + diff = tmp0 - state[7]; + // scale down and truncate + diff = diff >> 14; + if (diff < 0) + diff += 1; + state[7] = state[6] + diff * kResampleAllpass[0][2]; + state[6] = tmp0; + + // divide by two and store temporarily + out[i] += (state[7] >> 1); + } + + in--; +} + +// +// interpolator +// input: WebRtc_Word16 +// output: WebRtc_Word32 (normalized, not saturated) (of length len*2) +// state: filter state array; length = 8 +void WebRtcSpl_UpBy2ShortToInt(const WebRtc_Word16 *in, WebRtc_Word32 len, WebRtc_Word32 *out, + WebRtc_Word32 *state) +{ + WebRtc_Word32 tmp0, tmp1, diff; + WebRtc_Word32 i; + + // upper allpass filter (generates odd output samples) + for (i = 0; i < len; i++) + { + tmp0 = ((WebRtc_Word32)in[i] << 15) + (1 << 14); + diff = tmp0 - state[5]; + // scale down and round + diff = (diff + (1 << 13)) >> 14; + tmp1 = state[4] + diff * kResampleAllpass[0][0]; + state[4] = tmp0; + diff = tmp1 - state[6]; + // scale down and truncate + diff = diff >> 14; + if (diff < 0) + diff += 1; + tmp0 = state[5] + diff * kResampleAllpass[0][1]; + state[5] = tmp1; + diff = tmp0 - state[7]; + // scale down and truncate + diff = diff >> 14; + if (diff < 0) + diff += 1; + state[7] = state[6] + diff * kResampleAllpass[0][2]; + state[6] = tmp0; + + // scale down, round and store + out[i << 1] = state[7] >> 15; + } + + out++; + + // lower allpass filter (generates even output samples) + for (i = 0; i < len; i++) + { + tmp0 = ((WebRtc_Word32)in[i] << 15) + (1 << 14); + diff = tmp0 - state[1]; + // scale down and round + diff = (diff + (1 << 13)) >> 14; + tmp1 = state[0] + diff * kResampleAllpass[1][0]; + state[0] = tmp0; + diff = tmp1 - state[2]; + // scale down and truncate + diff = diff >> 14; + if (diff < 0) + diff += 1; + tmp0 = state[1] + diff * kResampleAllpass[1][1]; + state[1] = tmp1; + diff = tmp0 - state[3]; + // scale down and truncate + diff = diff >> 14; + if (diff < 0) + diff += 1; + state[3] = state[2] + diff * kResampleAllpass[1][2]; + state[2] = tmp0; + + // scale down, round and store + out[i << 1] = state[3] >> 15; + } +} + +// +// interpolator +// input: WebRtc_Word32 (shifted 15 positions to the left, + offset 16384) +// output: WebRtc_Word32 (shifted 15 positions to the left, + offset 16384) (of length len*2) +// state: filter state array; length = 8 +void WebRtcSpl_UpBy2IntToInt(const WebRtc_Word32 *in, WebRtc_Word32 len, WebRtc_Word32 *out, + WebRtc_Word32 *state) +{ + WebRtc_Word32 tmp0, tmp1, diff; + WebRtc_Word32 i; + + // upper allpass filter (generates odd output samples) + for (i = 0; i < len; i++) + { + tmp0 = in[i]; + diff = tmp0 - state[5]; + // scale down and round + diff = (diff + (1 << 13)) >> 14; + tmp1 = state[4] + diff * kResampleAllpass[0][0]; + state[4] = tmp0; + diff = tmp1 - state[6]; + // scale down and truncate + diff = diff >> 14; + if (diff < 0) + diff += 1; + tmp0 = state[5] + diff * kResampleAllpass[0][1]; + state[5] = tmp1; + diff = tmp0 - state[7]; + // scale down and truncate + diff = diff >> 14; + if (diff < 0) + diff += 1; + state[7] = state[6] + diff * kResampleAllpass[0][2]; + state[6] = tmp0; + + // scale down, round and store + out[i << 1] = state[7]; + } + + out++; + + // lower allpass filter (generates even output samples) + for (i = 0; i < len; i++) + { + tmp0 = in[i]; + diff = tmp0 - state[1]; + // scale down and round + diff = (diff + (1 << 13)) >> 14; + tmp1 = state[0] + diff * kResampleAllpass[1][0]; + state[0] = tmp0; + diff = tmp1 - state[2]; + // scale down and truncate + diff = diff >> 14; + if (diff < 0) + diff += 1; + tmp0 = state[1] + diff * kResampleAllpass[1][1]; + state[1] = tmp1; + diff = tmp0 - state[3]; + // scale down and truncate + diff = diff >> 14; + if (diff < 0) + diff += 1; + state[3] = state[2] + diff * kResampleAllpass[1][2]; + state[2] = tmp0; + + // scale down, round and store + out[i << 1] = state[3]; + } +} + +// +// interpolator +// input: WebRtc_Word32 (shifted 15 positions to the left, + offset 16384) +// output: WebRtc_Word16 (saturated) (of length len*2) +// state: filter state array; length = 8 +void WebRtcSpl_UpBy2IntToShort(const WebRtc_Word32 *in, WebRtc_Word32 len, WebRtc_Word16 *out, + WebRtc_Word32 *state) +{ + WebRtc_Word32 tmp0, tmp1, diff; + WebRtc_Word32 i; + + // upper allpass filter (generates odd output samples) + for (i = 0; i < len; i++) + { + tmp0 = in[i]; + diff = tmp0 - state[5]; + // scale down and round + diff = (diff + (1 << 13)) >> 14; + tmp1 = state[4] + diff * kResampleAllpass[0][0]; + state[4] = tmp0; + diff = tmp1 - state[6]; + // scale down and round + diff = diff >> 14; + if (diff < 0) + diff += 1; + tmp0 = state[5] + diff * kResampleAllpass[0][1]; + state[5] = tmp1; + diff = tmp0 - state[7]; + // scale down and truncate + diff = diff >> 14; + if (diff < 0) + diff += 1; + state[7] = state[6] + diff * kResampleAllpass[0][2]; + state[6] = tmp0; + + // scale down, saturate and store + tmp1 = state[7] >> 15; + if (tmp1 > (WebRtc_Word32)0x00007FFF) + tmp1 = 0x00007FFF; + if (tmp1 < (WebRtc_Word32)0xFFFF8000) + tmp1 = 0xFFFF8000; + out[i << 1] = (WebRtc_Word16)tmp1; + } + + out++; + + // lower allpass filter (generates even output samples) + for (i = 0; i < len; i++) + { + tmp0 = in[i]; + diff = tmp0 - state[1]; + // scale down and round + diff = (diff + (1 << 13)) >> 14; + tmp1 = state[0] + diff * kResampleAllpass[1][0]; + state[0] = tmp0; + diff = tmp1 - state[2]; + // scale down and truncate + diff = diff >> 14; + if (diff < 0) + diff += 1; + tmp0 = state[1] + diff * kResampleAllpass[1][1]; + state[1] = tmp1; + diff = tmp0 - state[3]; + // scale down and truncate + diff = diff >> 14; + if (diff < 0) + diff += 1; + state[3] = state[2] + diff * kResampleAllpass[1][2]; + state[2] = tmp0; + + // scale down, saturate and store + tmp1 = state[3] >> 15; + if (tmp1 > (WebRtc_Word32)0x00007FFF) + tmp1 = 0x00007FFF; + if (tmp1 < (WebRtc_Word32)0xFFFF8000) + tmp1 = 0xFFFF8000; + out[i << 1] = (WebRtc_Word16)tmp1; + } +} + +// lowpass filter +// input: WebRtc_Word16 +// output: WebRtc_Word32 (normalized, not saturated) +// state: filter state array; length = 8 +void WebRtcSpl_LPBy2ShortToInt(const WebRtc_Word16* in, WebRtc_Word32 len, WebRtc_Word32* out, + WebRtc_Word32* state) +{ + WebRtc_Word32 tmp0, tmp1, diff; + WebRtc_Word32 i; + + len >>= 1; + + // lower allpass filter: odd input -> even output samples + in++; + // initial state of polyphase delay element + tmp0 = state[12]; + for (i = 0; i < len; i++) + { + diff = tmp0 - state[1]; + // scale down and round + diff = (diff + (1 << 13)) >> 14; + tmp1 = state[0] + diff * kResampleAllpass[1][0]; + state[0] = tmp0; + diff = tmp1 - state[2]; + // scale down and truncate + diff = diff >> 14; + if (diff < 0) + diff += 1; + tmp0 = state[1] + diff * kResampleAllpass[1][1]; + state[1] = tmp1; + diff = tmp0 - state[3]; + // scale down and truncate + diff = diff >> 14; + if (diff < 0) + diff += 1; + state[3] = state[2] + diff * kResampleAllpass[1][2]; + state[2] = tmp0; + + // scale down, round and store + out[i << 1] = state[3] >> 1; + tmp0 = ((WebRtc_Word32)in[i << 1] << 15) + (1 << 14); + } + in--; + + // upper allpass filter: even input -> even output samples + for (i = 0; i < len; i++) + { + tmp0 = ((WebRtc_Word32)in[i << 1] << 15) + (1 << 14); + diff = tmp0 - state[5]; + // scale down and round + diff = (diff + (1 << 13)) >> 14; + tmp1 = state[4] + diff * kResampleAllpass[0][0]; + state[4] = tmp0; + diff = tmp1 - state[6]; + // scale down and round + diff = diff >> 14; + if (diff < 0) + diff += 1; + tmp0 = state[5] + diff * kResampleAllpass[0][1]; + state[5] = tmp1; + diff = tmp0 - state[7]; + // scale down and truncate + diff = diff >> 14; + if (diff < 0) + diff += 1; + state[7] = state[6] + diff * kResampleAllpass[0][2]; + state[6] = tmp0; + + // average the two allpass outputs, scale down and store + out[i << 1] = (out[i << 1] + (state[7] >> 1)) >> 15; + } + + // switch to odd output samples + out++; + + // lower allpass filter: even input -> odd output samples + for (i = 0; i < len; i++) + { + tmp0 = ((WebRtc_Word32)in[i << 1] << 15) + (1 << 14); + diff = tmp0 - state[9]; + // scale down and round + diff = (diff + (1 << 13)) >> 14; + tmp1 = state[8] + diff * kResampleAllpass[1][0]; + state[8] = tmp0; + diff = tmp1 - state[10]; + // scale down and truncate + diff = diff >> 14; + if (diff < 0) + diff += 1; + tmp0 = state[9] + diff * kResampleAllpass[1][1]; + state[9] = tmp1; + diff = tmp0 - state[11]; + // scale down and truncate + diff = diff >> 14; + if (diff < 0) + diff += 1; + state[11] = state[10] + diff * kResampleAllpass[1][2]; + state[10] = tmp0; + + // scale down, round and store + out[i << 1] = state[11] >> 1; + } + + // upper allpass filter: odd input -> odd output samples + in++; + for (i = 0; i < len; i++) + { + tmp0 = ((WebRtc_Word32)in[i << 1] << 15) + (1 << 14); + diff = tmp0 - state[13]; + // scale down and round + diff = (diff + (1 << 13)) >> 14; + tmp1 = state[12] + diff * kResampleAllpass[0][0]; + state[12] = tmp0; + diff = tmp1 - state[14]; + // scale down and round + diff = diff >> 14; + if (diff < 0) + diff += 1; + tmp0 = state[13] + diff * kResampleAllpass[0][1]; + state[13] = tmp1; + diff = tmp0 - state[15]; + // scale down and truncate + diff = diff >> 14; + if (diff < 0) + diff += 1; + state[15] = state[14] + diff * kResampleAllpass[0][2]; + state[14] = tmp0; + + // average the two allpass outputs, scale down and store + out[i << 1] = (out[i << 1] + (state[15] >> 1)) >> 15; + } +} + +// lowpass filter +// input: WebRtc_Word32 (shifted 15 positions to the left, + offset 16384) +// output: WebRtc_Word32 (normalized, not saturated) +// state: filter state array; length = 8 +void WebRtcSpl_LPBy2IntToInt(const WebRtc_Word32* in, WebRtc_Word32 len, WebRtc_Word32* out, + WebRtc_Word32* state) +{ + WebRtc_Word32 tmp0, tmp1, diff; + WebRtc_Word32 i; + + len >>= 1; + + // lower allpass filter: odd input -> even output samples + in++; + // initial state of polyphase delay element + tmp0 = state[12]; + for (i = 0; i < len; i++) + { + diff = tmp0 - state[1]; + // scale down and round + diff = (diff + (1 << 13)) >> 14; + tmp1 = state[0] + diff * kResampleAllpass[1][0]; + state[0] = tmp0; + diff = tmp1 - state[2]; + // scale down and truncate + diff = diff >> 14; + if (diff < 0) + diff += 1; + tmp0 = state[1] + diff * kResampleAllpass[1][1]; + state[1] = tmp1; + diff = tmp0 - state[3]; + // scale down and truncate + diff = diff >> 14; + if (diff < 0) + diff += 1; + state[3] = state[2] + diff * kResampleAllpass[1][2]; + state[2] = tmp0; + + // scale down, round and store + out[i << 1] = state[3] >> 1; + tmp0 = in[i << 1]; + } + in--; + + // upper allpass filter: even input -> even output samples + for (i = 0; i < len; i++) + { + tmp0 = in[i << 1]; + diff = tmp0 - state[5]; + // scale down and round + diff = (diff + (1 << 13)) >> 14; + tmp1 = state[4] + diff * kResampleAllpass[0][0]; + state[4] = tmp0; + diff = tmp1 - state[6]; + // scale down and round + diff = diff >> 14; + if (diff < 0) + diff += 1; + tmp0 = state[5] + diff * kResampleAllpass[0][1]; + state[5] = tmp1; + diff = tmp0 - state[7]; + // scale down and truncate + diff = diff >> 14; + if (diff < 0) + diff += 1; + state[7] = state[6] + diff * kResampleAllpass[0][2]; + state[6] = tmp0; + + // average the two allpass outputs, scale down and store + out[i << 1] = (out[i << 1] + (state[7] >> 1)) >> 15; + } + + // switch to odd output samples + out++; + + // lower allpass filter: even input -> odd output samples + for (i = 0; i < len; i++) + { + tmp0 = in[i << 1]; + diff = tmp0 - state[9]; + // scale down and round + diff = (diff + (1 << 13)) >> 14; + tmp1 = state[8] + diff * kResampleAllpass[1][0]; + state[8] = tmp0; + diff = tmp1 - state[10]; + // scale down and truncate + diff = diff >> 14; + if (diff < 0) + diff += 1; + tmp0 = state[9] + diff * kResampleAllpass[1][1]; + state[9] = tmp1; + diff = tmp0 - state[11]; + // scale down and truncate + diff = diff >> 14; + if (diff < 0) + diff += 1; + state[11] = state[10] + diff * kResampleAllpass[1][2]; + state[10] = tmp0; + + // scale down, round and store + out[i << 1] = state[11] >> 1; + } + + // upper allpass filter: odd input -> odd output samples + in++; + for (i = 0; i < len; i++) + { + tmp0 = in[i << 1]; + diff = tmp0 - state[13]; + // scale down and round + diff = (diff + (1 << 13)) >> 14; + tmp1 = state[12] + diff * kResampleAllpass[0][0]; + state[12] = tmp0; + diff = tmp1 - state[14]; + // scale down and round + diff = diff >> 14; + if (diff < 0) + diff += 1; + tmp0 = state[13] + diff * kResampleAllpass[0][1]; + state[13] = tmp1; + diff = tmp0 - state[15]; + // scale down and truncate + diff = diff >> 14; + if (diff < 0) + diff += 1; + state[15] = state[14] + diff * kResampleAllpass[0][2]; + state[14] = tmp0; + + // average the two allpass outputs, scale down and store + out[i << 1] = (out[i << 1] + (state[15] >> 1)) >> 15; + } +} diff --git a/src/mod/codecs/mod_iSAC/resample_by_2_internal.h b/src/mod/codecs/mod_iSAC/resample_by_2_internal.h new file mode 100644 index 0000000000..b6ac9f0cb4 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/resample_by_2_internal.h @@ -0,0 +1,47 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + + +/* + * This header file contains some internal resampling functions. + * + */ + +#ifndef WEBRTC_SPL_RESAMPLE_BY_2_INTERNAL_H_ +#define WEBRTC_SPL_RESAMPLE_BY_2_INTERNAL_H_ + +#include "typedefs.h" + +/******************************************************************* + * resample_by_2_fast.c + * Functions for internal use in the other resample functions + ******************************************************************/ +void WebRtcSpl_DownBy2IntToShort(WebRtc_Word32 *in, WebRtc_Word32 len, WebRtc_Word16 *out, + WebRtc_Word32 *state); + +void WebRtcSpl_DownBy2ShortToInt(const WebRtc_Word16 *in, WebRtc_Word32 len, + WebRtc_Word32 *out, WebRtc_Word32 *state); + +void WebRtcSpl_UpBy2ShortToInt(const WebRtc_Word16 *in, WebRtc_Word32 len, + WebRtc_Word32 *out, WebRtc_Word32 *state); + +void WebRtcSpl_UpBy2IntToInt(const WebRtc_Word32 *in, WebRtc_Word32 len, WebRtc_Word32 *out, + WebRtc_Word32 *state); + +void WebRtcSpl_UpBy2IntToShort(const WebRtc_Word32 *in, WebRtc_Word32 len, + WebRtc_Word16 *out, WebRtc_Word32 *state); + +void WebRtcSpl_LPBy2ShortToInt(const WebRtc_Word16* in, WebRtc_Word32 len, + WebRtc_Word32* out, WebRtc_Word32* state); + +void WebRtcSpl_LPBy2IntToInt(const WebRtc_Word32* in, WebRtc_Word32 len, WebRtc_Word32* out, + WebRtc_Word32* state); + +#endif // WEBRTC_SPL_RESAMPLE_BY_2_INTERNAL_H_ diff --git a/src/mod/codecs/mod_iSAC/resample_fractional.c b/src/mod/codecs/mod_iSAC/resample_fractional.c new file mode 100644 index 0000000000..51003d45d7 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/resample_fractional.c @@ -0,0 +1,242 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + + +/* + * This file contains the resampling functions between 48, 44, 32 and 24 kHz. + * The description headers can be found in signal_processing_library.h + * + */ + +#include "signal_processing_library.h" + +// interpolation coefficients +static const WebRtc_Word16 kCoefficients48To32[2][8] = { + {778, -2050, 1087, 23285, 12903, -3783, 441, 222}, + {222, 441, -3783, 12903, 23285, 1087, -2050, 778} +}; + +static const WebRtc_Word16 kCoefficients32To24[3][8] = { + {767, -2362, 2434, 24406, 10620, -3838, 721, 90}, + {386, -381, -2646, 19062, 19062, -2646, -381, 386}, + {90, 721, -3838, 10620, 24406, 2434, -2362, 767} +}; + +static const WebRtc_Word16 kCoefficients44To32[4][9] = { + {117, -669, 2245, -6183, 26267, 13529, -3245, 845, -138}, + {-101, 612, -2283, 8532, 29790, -5138, 1789, -524, 91}, + {50, -292, 1016, -3064, 32010, 3933, -1147, 315, -53}, + {-156, 974, -3863, 18603, 21691, -6246, 2353, -712, 126} +}; + +// Resampling ratio: 2/3 +// input: WebRtc_Word32 (normalized, not saturated) :: size 3 * K +// output: WebRtc_Word32 (shifted 15 positions to the left, + offset 16384) :: size 2 * K +// K: number of blocks + +void WebRtcSpl_Resample48khzTo32khz(const WebRtc_Word32 *In, WebRtc_Word32 *Out, + const WebRtc_Word32 K) +{ + ///////////////////////////////////////////////////////////// + // Filter operation: + // + // Perform resampling (3 input samples -> 2 output samples); + // process in sub blocks of size 3 samples. + WebRtc_Word32 tmp; + WebRtc_Word32 m; + + for (m = 0; m < K; m++) + { + tmp = 1 << 14; + tmp += kCoefficients48To32[0][0] * In[0]; + tmp += kCoefficients48To32[0][1] * In[1]; + tmp += kCoefficients48To32[0][2] * In[2]; + tmp += kCoefficients48To32[0][3] * In[3]; + tmp += kCoefficients48To32[0][4] * In[4]; + tmp += kCoefficients48To32[0][5] * In[5]; + tmp += kCoefficients48To32[0][6] * In[6]; + tmp += kCoefficients48To32[0][7] * In[7]; + Out[0] = tmp; + + tmp = 1 << 14; + tmp += kCoefficients48To32[1][0] * In[1]; + tmp += kCoefficients48To32[1][1] * In[2]; + tmp += kCoefficients48To32[1][2] * In[3]; + tmp += kCoefficients48To32[1][3] * In[4]; + tmp += kCoefficients48To32[1][4] * In[5]; + tmp += kCoefficients48To32[1][5] * In[6]; + tmp += kCoefficients48To32[1][6] * In[7]; + tmp += kCoefficients48To32[1][7] * In[8]; + Out[1] = tmp; + + // update pointers + In += 3; + Out += 2; + } +} + +// Resampling ratio: 3/4 +// input: WebRtc_Word32 (normalized, not saturated) :: size 4 * K +// output: WebRtc_Word32 (shifted 15 positions to the left, + offset 16384) :: size 3 * K +// K: number of blocks + +void WebRtcSpl_Resample32khzTo24khz(const WebRtc_Word32 *In, WebRtc_Word32 *Out, + const WebRtc_Word32 K) +{ + ///////////////////////////////////////////////////////////// + // Filter operation: + // + // Perform resampling (4 input samples -> 3 output samples); + // process in sub blocks of size 4 samples. + WebRtc_Word32 m; + WebRtc_Word32 tmp; + + for (m = 0; m < K; m++) + { + tmp = 1 << 14; + tmp += kCoefficients32To24[0][0] * In[0]; + tmp += kCoefficients32To24[0][1] * In[1]; + tmp += kCoefficients32To24[0][2] * In[2]; + tmp += kCoefficients32To24[0][3] * In[3]; + tmp += kCoefficients32To24[0][4] * In[4]; + tmp += kCoefficients32To24[0][5] * In[5]; + tmp += kCoefficients32To24[0][6] * In[6]; + tmp += kCoefficients32To24[0][7] * In[7]; + Out[0] = tmp; + + tmp = 1 << 14; + tmp += kCoefficients32To24[1][0] * In[1]; + tmp += kCoefficients32To24[1][1] * In[2]; + tmp += kCoefficients32To24[1][2] * In[3]; + tmp += kCoefficients32To24[1][3] * In[4]; + tmp += kCoefficients32To24[1][4] * In[5]; + tmp += kCoefficients32To24[1][5] * In[6]; + tmp += kCoefficients32To24[1][6] * In[7]; + tmp += kCoefficients32To24[1][7] * In[8]; + Out[1] = tmp; + + tmp = 1 << 14; + tmp += kCoefficients32To24[2][0] * In[2]; + tmp += kCoefficients32To24[2][1] * In[3]; + tmp += kCoefficients32To24[2][2] * In[4]; + tmp += kCoefficients32To24[2][3] * In[5]; + tmp += kCoefficients32To24[2][4] * In[6]; + tmp += kCoefficients32To24[2][5] * In[7]; + tmp += kCoefficients32To24[2][6] * In[8]; + tmp += kCoefficients32To24[2][7] * In[9]; + Out[2] = tmp; + + // update pointers + In += 4; + Out += 3; + } +} + +// +// fractional resampling filters +// Fout = 11/16 * Fin +// Fout = 8/11 * Fin +// + +// compute two inner-products and store them to output array +static void WebRtcSpl_ResampDotProduct(const WebRtc_Word32 *in1, const WebRtc_Word32 *in2, + const WebRtc_Word16 *coef_ptr, WebRtc_Word32 *out1, + WebRtc_Word32 *out2) +{ + WebRtc_Word32 tmp1 = 16384; + WebRtc_Word32 tmp2 = 16384; + WebRtc_Word16 coef; + + coef = coef_ptr[0]; + tmp1 += coef * in1[0]; + tmp2 += coef * in2[-0]; + + coef = coef_ptr[1]; + tmp1 += coef * in1[1]; + tmp2 += coef * in2[-1]; + + coef = coef_ptr[2]; + tmp1 += coef * in1[2]; + tmp2 += coef * in2[-2]; + + coef = coef_ptr[3]; + tmp1 += coef * in1[3]; + tmp2 += coef * in2[-3]; + + coef = coef_ptr[4]; + tmp1 += coef * in1[4]; + tmp2 += coef * in2[-4]; + + coef = coef_ptr[5]; + tmp1 += coef * in1[5]; + tmp2 += coef * in2[-5]; + + coef = coef_ptr[6]; + tmp1 += coef * in1[6]; + tmp2 += coef * in2[-6]; + + coef = coef_ptr[7]; + tmp1 += coef * in1[7]; + tmp2 += coef * in2[-7]; + + coef = coef_ptr[8]; + *out1 = tmp1 + coef * in1[8]; + *out2 = tmp2 + coef * in2[-8]; +} + +// Resampling ratio: 8/11 +// input: WebRtc_Word32 (normalized, not saturated) :: size 11 * K +// output: WebRtc_Word32 (shifted 15 positions to the left, + offset 16384) :: size 8 * K +// K: number of blocks + +void WebRtcSpl_Resample44khzTo32khz(const WebRtc_Word32 *In, WebRtc_Word32 *Out, + const WebRtc_Word32 K) +{ + ///////////////////////////////////////////////////////////// + // Filter operation: + // + // Perform resampling (11 input samples -> 8 output samples); + // process in sub blocks of size 11 samples. + WebRtc_Word32 tmp; + WebRtc_Word32 m; + + for (m = 0; m < K; m++) + { + tmp = 1 << 14; + + // first output sample + Out[0] = ((WebRtc_Word32)In[3] << 15) + tmp; + + // sum and accumulate filter coefficients and input samples + tmp += kCoefficients44To32[3][0] * In[5]; + tmp += kCoefficients44To32[3][1] * In[6]; + tmp += kCoefficients44To32[3][2] * In[7]; + tmp += kCoefficients44To32[3][3] * In[8]; + tmp += kCoefficients44To32[3][4] * In[9]; + tmp += kCoefficients44To32[3][5] * In[10]; + tmp += kCoefficients44To32[3][6] * In[11]; + tmp += kCoefficients44To32[3][7] * In[12]; + tmp += kCoefficients44To32[3][8] * In[13]; + Out[4] = tmp; + + // sum and accumulate filter coefficients and input samples + WebRtcSpl_ResampDotProduct(&In[0], &In[17], kCoefficients44To32[0], &Out[1], &Out[7]); + + // sum and accumulate filter coefficients and input samples + WebRtcSpl_ResampDotProduct(&In[2], &In[15], kCoefficients44To32[1], &Out[2], &Out[6]); + + // sum and accumulate filter coefficients and input samples + WebRtcSpl_ResampDotProduct(&In[3], &In[14], kCoefficients44To32[2], &Out[3], &Out[5]); + + // update pointers + In += 11; + Out += 8; + } +} diff --git a/src/mod/codecs/mod_iSAC/settings.h b/src/mod/codecs/mod_iSAC/settings.h new file mode 100644 index 0000000000..b7aed77065 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/settings.h @@ -0,0 +1,199 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * settings.h + * + * Declaration of #defines used in the iSAC codec + * + */ + +#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_SETTINGS_H_ +#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_SETTINGS_H_ + +/* sampling frequency (Hz) */ +#define FS 16000 + +/* number of samples per frame (either 320 (20ms), 480 (30ms) or 960 (60ms)) */ +#define INITIAL_FRAMESAMPLES 960 + + +#define MAXFFTSIZE 2048 +#define NFACTOR 11 + + + +/* do not modify the following; this will have to be modified if we have a 20ms framesize option */ +/*************************************************************************************************/ +/* miliseconds */ +#define FRAMESIZE 30 +/* number of samples per frame processed in the encoder, 480 */ +#define FRAMESAMPLES 480 /* ((FRAMESIZE*FS)/1000) */ +#define FRAMESAMPLES_HALF 240 +#define FRAMESAMPLES_QUARTER 120 +/*************************************************************************************************/ + + + +/* max number of samples per frame (= 60 ms frame) */ +#define MAX_FRAMESAMPLES 960 +#define MAX_SWBFRAMESAMPLES (MAX_FRAMESAMPLES * 2) +/* number of samples per 10ms frame */ +#define FRAMESAMPLES_10ms ((10*FS)/1000) +#define SWBFRAMESAMPLES_10ms (FRAMESAMPLES_10ms * 2) +/* number of samples in 30 ms frame */ +#define FRAMESAMPLES_30ms 480 +/* number of subframes */ +#define SUBFRAMES 6 +/* length of a subframe */ +#define UPDATE 80 +/* length of half a subframe (low/high band) */ +#define HALF_SUBFRAMELEN (UPDATE/2) +/* samples of look ahead (in a half-band, so actually half the samples of look ahead @ FS) */ +#define QLOOKAHEAD 24 /* 3 ms */ +/* order of AR model in spectral entropy coder */ +#define AR_ORDER 6 +/* order of LP model in spectral entropy coder */ +#define LP_ORDER 0 + +/* window length (masking analysis) */ +#define WINLEN 256 +/* order of low-band pole filter used to approximate masking curve */ +#define ORDERLO 12 +/* order of hi-band pole filter used to approximate masking curve */ +#define ORDERHI 6 + +#define UB_LPC_ORDER 4 +#define UB_LPC_VEC_PER_FRAME 2 +#define UB16_LPC_VEC_PER_FRAME 4 +#define UB_ACTIVE_SUBFRAMES 2 +#define UB_MAX_LPC_ORDER 6 +#define UB_INTERPOL_SEGMENTS 1 +#define UB16_INTERPOL_SEGMENTS 3 +#define LB_TOTAL_DELAY_SAMPLES 48 +enum ISACBandwidth {isac8kHz = 8, isac12kHz = 12, isac16kHz = 16}; +enum ISACBand{isacLowerBand = 0, isacUpperBand = 1}; +#define UB_LPC_GAIN_DIM SUBFRAMES +#define FB_STATE_SIZE_WORD32 6 + + +/* order for post_filter_bank */ +#define POSTQORDER 3 +/* order for pre-filterbank */ +#define QORDER 3 +/* another order */ +#define QORDER_ALL (POSTQORDER+QORDER-1) +/* for decimator */ +#define ALLPASSSECTIONS 2 + + +/* array size for byte stream in number of bytes. */ +#define STREAM_SIZE_MAX 600 /* The old maximum size still needed for the decoding */ +#define STREAM_SIZE_MAX_30 200 /* 200 bytes = 53.4 kbit/s @ 30 ms.framelength */ +#define STREAM_SIZE_MAX_60 400 /* 400 bytes = 53.4 kbit/s @ 60 ms.framelength */ + +/* storage size for bit counts */ +#define BIT_COUNTER_SIZE 30 +/* maximum order of any AR model or filter */ +#define MAX_AR_MODEL_ORDER 12//50 + + +/* For pitch analysis */ +#define PITCH_FRAME_LEN (FRAMESAMPLES_HALF) /* 30 ms */ +#define PITCH_MAX_LAG 140 /* 57 Hz */ +#define PITCH_MIN_LAG 20 /* 400 Hz */ +#define PITCH_MAX_GAIN 0.45 +#define PITCH_MAX_GAIN_06 0.27 /* PITCH_MAX_GAIN*0.6 */ +#define PITCH_MAX_GAIN_Q12 1843 +#define PITCH_LAG_SPAN2 (PITCH_MAX_LAG/2-PITCH_MIN_LAG/2+5) +#define PITCH_CORR_LEN2 60 /* 15 ms */ +#define PITCH_CORR_STEP2 (PITCH_FRAME_LEN/4) +#define PITCH_BW 11 /* half the band width of correlation surface */ +#define PITCH_SUBFRAMES 4 +#define PITCH_GRAN_PER_SUBFRAME 5 +#define PITCH_SUBFRAME_LEN (PITCH_FRAME_LEN/PITCH_SUBFRAMES) +#define PITCH_UPDATE (PITCH_SUBFRAME_LEN/PITCH_GRAN_PER_SUBFRAME) +/* maximum number of peaks to be examined in correlation surface */ +#define PITCH_MAX_NUM_PEAKS 10 +#define PITCH_PEAK_DECAY 0.85 +/* For weighting filter */ +#define PITCH_WLPCORDER 6 +#define PITCH_WLPCWINLEN PITCH_FRAME_LEN +#define PITCH_WLPCASYM 0.3 /* asymmetry parameter */ +#define PITCH_WLPCBUFLEN PITCH_WLPCWINLEN +/* For pitch filter */ +#define PITCH_BUFFSIZE (PITCH_MAX_LAG + 50) /* Extra 50 for fraction and LP filters */ +#define PITCH_INTBUFFSIZE (PITCH_FRAME_LEN+PITCH_BUFFSIZE) +/* Max rel. step for interpolation */ +#define PITCH_UPSTEP 1.5 +/* Max rel. step for interpolation */ +#define PITCH_DOWNSTEP 0.67 +#define PITCH_FRACS 8 +#define PITCH_FRACORDER 9 +#define PITCH_DAMPORDER 5 +#define PITCH_FILTDELAY 1.5f +/* stepsize for quantization of the pitch Gain */ +#define PITCH_GAIN_STEPSIZE 0.125 + + + +/* Order of high pass filter */ +#define HPORDER 2 + +/* some mathematical constants */ +#define LOG2EXP 1.44269504088896 /* log2(exp) */ +#define PI 3.14159265358979 + +/* Maximum number of iterations allowed to limit payload size */ +#define MAX_PAYLOAD_LIMIT_ITERATION 5 + +/* Redundant Coding */ +#define RCU_BOTTLENECK_BPS 16000 +#define RCU_TRANSCODING_SCALE 0.40f +#define RCU_TRANSCODING_SCALE_INVERSE 2.5f + +#define RCU_TRANSCODING_SCALE_UB 0.50f +#define RCU_TRANSCODING_SCALE_UB_INVERSE 2.0f + + +/* Define Error codes */ +/* 6000 General */ +#define ISAC_MEMORY_ALLOCATION_FAILED 6010 +#define ISAC_MODE_MISMATCH 6020 +#define ISAC_DISALLOWED_BOTTLENECK 6030 +#define ISAC_DISALLOWED_FRAME_LENGTH 6040 +#define ISAC_UNSUPPORTED_SAMPLING_FREQUENCY 6050 + +/* 6200 Bandwidth estimator */ +#define ISAC_RANGE_ERROR_BW_ESTIMATOR 6240 +/* 6400 Encoder */ +#define ISAC_ENCODER_NOT_INITIATED 6410 +#define ISAC_DISALLOWED_CODING_MODE 6420 +#define ISAC_DISALLOWED_FRAME_MODE_ENCODER 6430 +#define ISAC_DISALLOWED_BITSTREAM_LENGTH 6440 +#define ISAC_PAYLOAD_LARGER_THAN_LIMIT 6450 +#define ISAC_DISALLOWED_ENCODER_BANDWIDTH 6460 +/* 6600 Decoder */ +#define ISAC_DECODER_NOT_INITIATED 6610 +#define ISAC_EMPTY_PACKET 6620 +#define ISAC_DISALLOWED_FRAME_MODE_DECODER 6630 +#define ISAC_RANGE_ERROR_DECODE_FRAME_LENGTH 6640 +#define ISAC_RANGE_ERROR_DECODE_BANDWIDTH 6650 +#define ISAC_RANGE_ERROR_DECODE_PITCH_GAIN 6660 +#define ISAC_RANGE_ERROR_DECODE_PITCH_LAG 6670 +#define ISAC_RANGE_ERROR_DECODE_LPC 6680 +#define ISAC_RANGE_ERROR_DECODE_SPECTRUM 6690 +#define ISAC_LENGTH_MISMATCH 6730 +#define ISAC_RANGE_ERROR_DECODE_BANDWITH 6740 +#define ISAC_DISALLOWED_BANDWIDTH_MODE_DECODER 6750 +/* 6800 Call setup formats */ +#define ISAC_INCOMPATIBLE_FORMATS 6810 + +#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_SETTINGS_H_ */ diff --git a/src/mod/codecs/mod_iSAC/signal_processing_library.h b/src/mod/codecs/mod_iSAC/signal_processing_library.h new file mode 100644 index 0000000000..651a68c8b4 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/signal_processing_library.h @@ -0,0 +1,1686 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + + +/* + * This header file includes all of the fix point signal processing library (SPL) function + * descriptions and declarations. + * For specific function calls, see bottom of file. + */ + +#ifndef WEBRTC_SPL_SIGNAL_PROCESSING_LIBRARY_H_ +#define WEBRTC_SPL_SIGNAL_PROCESSING_LIBRARY_H_ + +#include +#include "typedefs.h" + +#ifdef ARM_WINM +#include // intrinsic file for windows mobile +#endif + +// Macros specific for the fixed point implementation +#define WEBRTC_SPL_WORD16_MAX 32767 +#define WEBRTC_SPL_WORD16_MIN -32768 +#define WEBRTC_SPL_WORD32_MAX (WebRtc_Word32)0x7fffffff +#define WEBRTC_SPL_WORD32_MIN (WebRtc_Word32)0x80000000 +#define WEBRTC_SPL_MAX_LPC_ORDER 14 +#define WEBRTC_SPL_MAX_SEED_USED 0x80000000L +#define WEBRTC_SPL_MIN(A, B) (A < B ? A : B) // Get min value +#define WEBRTC_SPL_MAX(A, B) (A > B ? A : B) // Get max value +#define WEBRTC_SPL_ABS_W16(a) \ + (((WebRtc_Word16)a >= 0) ? ((WebRtc_Word16)a) : -((WebRtc_Word16)a)) +#define WEBRTC_SPL_ABS_W32(a) \ + (((WebRtc_Word32)a >= 0) ? ((WebRtc_Word32)a) : -((WebRtc_Word32)a)) + +#if (defined WEBRTC_TARGET_PC)||(defined __TARGET_XSCALE) +#define WEBRTC_SPL_GET_BYTE(a, nr) (((WebRtc_Word8 *)a)[nr]) +#define WEBRTC_SPL_SET_BYTE(d_ptr, val, index) \ + (((WebRtc_Word8 *)d_ptr)[index] = (val)) +#elif defined WEBRTC_BIG_ENDIAN +#define WEBRTC_SPL_GET_BYTE(a, nr) \ + ((((WebRtc_Word16 *)a)[nr >> 1]) >> (((nr + 1) & 0x1) * 8) & 0x00ff) +#define WEBRTC_SPL_SET_BYTE(d_ptr, val, index) \ + ((WebRtc_Word16 *)d_ptr)[index >> 1] = \ + ((((WebRtc_Word16 *)d_ptr)[index >> 1]) \ + & (0x00ff << (8 * ((index) & 0x1)))) | (val << (8 * ((index + 1) & 0x1))) +#else +#define WEBRTC_SPL_GET_BYTE(a,nr) \ + ((((WebRtc_Word16 *)(a))[(nr) >> 1]) >> (((nr) & 0x1) * 8) & 0x00ff) +#define WEBRTC_SPL_SET_BYTE(d_ptr, val, index) \ + ((WebRtc_Word16 *)(d_ptr))[(index) >> 1] = \ + ((((WebRtc_Word16 *)(d_ptr))[(index) >> 1]) \ + & (0x00ff << (8 * (((index) + 1) & 0x1)))) | \ + ((val) << (8 * ((index) & 0x1))) +#endif + +#define WEBRTC_SPL_MUL(a, b) \ + ((WebRtc_Word32) ((WebRtc_Word32)(a) * (WebRtc_Word32)(b))) +#define WEBRTC_SPL_UMUL(a, b) \ + ((WebRtc_UWord32) ((WebRtc_UWord32)(a) * (WebRtc_UWord32)(b))) +#define WEBRTC_SPL_UMUL_RSFT16(a, b) \ + ((WebRtc_UWord32) ((WebRtc_UWord32)(a) * (WebRtc_UWord32)(b)) >> 16) +#define WEBRTC_SPL_UMUL_16_16(a, b) \ + ((WebRtc_UWord32) (WebRtc_UWord16)(a) * (WebRtc_UWord16)(b)) +#define WEBRTC_SPL_UMUL_16_16_RSFT16(a, b) \ + (((WebRtc_UWord32) (WebRtc_UWord16)(a) * (WebRtc_UWord16)(b)) >> 16) +#define WEBRTC_SPL_UMUL_32_16(a, b) \ + ((WebRtc_UWord32) ((WebRtc_UWord32)(a) * (WebRtc_UWord16)(b))) +#define WEBRTC_SPL_UMUL_32_16_RSFT16(a, b) \ + ((WebRtc_UWord32) ((WebRtc_UWord32)(a) * (WebRtc_UWord16)(b)) >> 16) +#define WEBRTC_SPL_MUL_16_U16(a, b) \ + ((WebRtc_Word32)(WebRtc_Word16)(a) * (WebRtc_UWord16)(b)) +#define WEBRTC_SPL_DIV(a, b) \ + ((WebRtc_Word32) ((WebRtc_Word32)(a) / (WebRtc_Word32)(b))) +#define WEBRTC_SPL_UDIV(a, b) \ + ((WebRtc_UWord32) ((WebRtc_UWord32)(a) / (WebRtc_UWord32)(b))) + +#ifndef WEBRTC_ARCH_ARM_V7A +// For ARMv7 platforms, these are inline functions in spl_inl_armv7.h +#define WEBRTC_SPL_MUL_16_16(a, b) \ + ((WebRtc_Word32) (((WebRtc_Word16)(a)) * ((WebRtc_Word16)(b)))) +#define WEBRTC_SPL_MUL_16_32_RSFT16(a, b) \ + (WEBRTC_SPL_MUL_16_16(a, b >> 16) \ + + ((WEBRTC_SPL_MUL_16_16(a, (b & 0xffff) >> 1) + 0x4000) >> 15)) +#define WEBRTC_SPL_MUL_32_32_RSFT32(a32a, a32b, b32) \ + ((WebRtc_Word32)(WEBRTC_SPL_MUL_16_32_RSFT16(a32a, b32) \ + + (WEBRTC_SPL_MUL_16_32_RSFT16(a32b, b32) >> 16))) +#define WEBRTC_SPL_MUL_32_32_RSFT32BI(a32, b32) \ + ((WebRtc_Word32)(WEBRTC_SPL_MUL_16_32_RSFT16(( \ + (WebRtc_Word16)(a32 >> 16)), b32) + \ + (WEBRTC_SPL_MUL_16_32_RSFT16(( \ + (WebRtc_Word16)((a32 & 0x0000FFFF) >> 1)), b32) >> 15))) +#endif + +#define WEBRTC_SPL_MUL_16_32_RSFT11(a, b) \ + ((WEBRTC_SPL_MUL_16_16(a, (b) >> 16) << 5) \ + + (((WEBRTC_SPL_MUL_16_U16(a, (WebRtc_UWord16)(b)) >> 1) + 0x0200) >> 10)) +#define WEBRTC_SPL_MUL_16_32_RSFT14(a, b) \ + ((WEBRTC_SPL_MUL_16_16(a, (b) >> 16) << 2) \ + + (((WEBRTC_SPL_MUL_16_U16(a, (WebRtc_UWord16)(b)) >> 1) + 0x1000) >> 13)) +#define WEBRTC_SPL_MUL_16_32_RSFT15(a, b) \ + ((WEBRTC_SPL_MUL_16_16(a, (b) >> 16) << 1) \ + + (((WEBRTC_SPL_MUL_16_U16(a, (WebRtc_UWord16)(b)) >> 1) + 0x2000) >> 14)) + +#ifdef ARM_WINM +#define WEBRTC_SPL_MUL_16_16(a, b) \ + _SmulLo_SW_SL((WebRtc_Word16)(a), (WebRtc_Word16)(b)) +#endif + +#define WEBRTC_SPL_MUL_16_16_RSFT(a, b, c) \ + (WEBRTC_SPL_MUL_16_16(a, b) >> (c)) + +#define WEBRTC_SPL_MUL_16_16_RSFT_WITH_ROUND(a, b, c) \ + ((WEBRTC_SPL_MUL_16_16(a, b) + ((WebRtc_Word32) \ + (((WebRtc_Word32)1) << ((c) - 1)))) >> (c)) +#define WEBRTC_SPL_MUL_16_16_RSFT_WITH_FIXROUND(a, b) \ + ((WEBRTC_SPL_MUL_16_16(a, b) + ((WebRtc_Word32) (1 << 14))) >> 15) + +// C + the 32 most significant bits of A * B +#define WEBRTC_SPL_SCALEDIFF32(A, B, C) \ + (C + (B >> 16) * A + (((WebRtc_UWord32)(0x0000FFFF & B) * A) >> 16)) + +#define WEBRTC_SPL_ADD_SAT_W32(a, b) WebRtcSpl_AddSatW32(a, b) +#define WEBRTC_SPL_SAT(a, b, c) (b > a ? a : b < c ? c : b) +#define WEBRTC_SPL_MUL_32_16(a, b) ((a) * (b)) + +#define WEBRTC_SPL_SUB_SAT_W32(a, b) WebRtcSpl_SubSatW32(a, b) +#define WEBRTC_SPL_ADD_SAT_W16(a, b) WebRtcSpl_AddSatW16(a, b) +#define WEBRTC_SPL_SUB_SAT_W16(a, b) WebRtcSpl_SubSatW16(a, b) + +// We cannot do casting here due to signed/unsigned problem +#define WEBRTC_SPL_IS_NEG(a) ((a) & 0x80000000) +// Shifting with negative numbers allowed +// Positive means left shift +#define WEBRTC_SPL_SHIFT_W16(x, c) \ + (((c) >= 0) ? ((x) << (c)) : ((x) >> (-(c)))) +#define WEBRTC_SPL_SHIFT_W32(x, c) \ + (((c) >= 0) ? ((x) << (c)) : ((x) >> (-(c)))) + +// Shifting with negative numbers not allowed +// We cannot do casting here due to signed/unsigned problem +#define WEBRTC_SPL_RSHIFT_W16(x, c) ((x) >> (c)) +#define WEBRTC_SPL_LSHIFT_W16(x, c) ((x) << (c)) +#define WEBRTC_SPL_RSHIFT_W32(x, c) ((x) >> (c)) +#define WEBRTC_SPL_LSHIFT_W32(x, c) ((x) << (c)) + +#define WEBRTC_SPL_RSHIFT_U16(x, c) ((WebRtc_UWord16)(x) >> (c)) +#define WEBRTC_SPL_LSHIFT_U16(x, c) ((WebRtc_UWord16)(x) << (c)) +#define WEBRTC_SPL_RSHIFT_U32(x, c) ((WebRtc_UWord32)(x) >> (c)) +#define WEBRTC_SPL_LSHIFT_U32(x, c) ((WebRtc_UWord32)(x) << (c)) + +#define WEBRTC_SPL_VNEW(t, n) (t *) malloc (sizeof (t) * (n)) +#define WEBRTC_SPL_FREE free + +#define WEBRTC_SPL_RAND(a) \ + ((WebRtc_Word16)(WEBRTC_SPL_MUL_16_16_RSFT((a), 18816, 7) & 0x00007fff)) + +#ifdef __cplusplus +extern "C" +{ +#endif + +#define WEBRTC_SPL_MEMCPY_W8(v1, v2, length) \ + memcpy(v1, v2, (length) * sizeof(char)) +#define WEBRTC_SPL_MEMCPY_W16(v1, v2, length) \ + memcpy(v1, v2, (length) * sizeof(WebRtc_Word16)) + +#define WEBRTC_SPL_MEMMOVE_W16(v1, v2, length) \ + memmove(v1, v2, (length) * sizeof(WebRtc_Word16)) + +// inline functions: +#include "spl_inl.h" + +// Get SPL Version +WebRtc_Word16 WebRtcSpl_get_version(char* version, + WebRtc_Word16 length_in_bytes); + +int WebRtcSpl_GetScalingSquare(WebRtc_Word16* in_vector, + int in_vector_length, + int times); + +// Copy and set operations. Implementation in copy_set_operations.c. +// Descriptions at bottom of file. +void WebRtcSpl_MemSetW16(WebRtc_Word16* vector, + WebRtc_Word16 set_value, + int vector_length); +void WebRtcSpl_MemSetW32(WebRtc_Word32* vector, + WebRtc_Word32 set_value, + int vector_length); +void WebRtcSpl_MemCpyReversedOrder(WebRtc_Word16* out_vector, + WebRtc_Word16* in_vector, + int vector_length); +WebRtc_Word16 WebRtcSpl_CopyFromEndW16(G_CONST WebRtc_Word16* in_vector, + WebRtc_Word16 in_vector_length, + WebRtc_Word16 samples, + WebRtc_Word16* out_vector); +WebRtc_Word16 WebRtcSpl_ZerosArrayW16(WebRtc_Word16* vector, + WebRtc_Word16 vector_length); +WebRtc_Word16 WebRtcSpl_ZerosArrayW32(WebRtc_Word32* vector, + WebRtc_Word16 vector_length); +WebRtc_Word16 WebRtcSpl_OnesArrayW16(WebRtc_Word16* vector, + WebRtc_Word16 vector_length); +WebRtc_Word16 WebRtcSpl_OnesArrayW32(WebRtc_Word32* vector, + WebRtc_Word16 vector_length); +// End: Copy and set operations. + +// Minimum and maximum operations. Implementation in min_max_operations.c. +// Descriptions at bottom of file. +WebRtc_Word16 WebRtcSpl_MaxAbsValueW16(const WebRtc_Word16* vector, + WebRtc_Word16 length); +WebRtc_Word32 WebRtcSpl_MaxAbsValueW32(G_CONST WebRtc_Word32* vector, + WebRtc_Word16 length); +WebRtc_Word16 WebRtcSpl_MinValueW16(G_CONST WebRtc_Word16* vector, + WebRtc_Word16 length); +WebRtc_Word32 WebRtcSpl_MinValueW32(G_CONST WebRtc_Word32* vector, + WebRtc_Word16 length); +WebRtc_Word16 WebRtcSpl_MaxValueW16(G_CONST WebRtc_Word16* vector, + WebRtc_Word16 length); + +WebRtc_Word16 WebRtcSpl_MaxAbsIndexW16(G_CONST WebRtc_Word16* vector, + WebRtc_Word16 length); +WebRtc_Word32 WebRtcSpl_MaxValueW32(G_CONST WebRtc_Word32* vector, + WebRtc_Word16 length); +WebRtc_Word16 WebRtcSpl_MinIndexW16(G_CONST WebRtc_Word16* vector, + WebRtc_Word16 length); +WebRtc_Word16 WebRtcSpl_MinIndexW32(G_CONST WebRtc_Word32* vector, + WebRtc_Word16 length); +WebRtc_Word16 WebRtcSpl_MaxIndexW16(G_CONST WebRtc_Word16* vector, + WebRtc_Word16 length); +WebRtc_Word16 WebRtcSpl_MaxIndexW32(G_CONST WebRtc_Word32* vector, + WebRtc_Word16 length); +// End: Minimum and maximum operations. + +// Vector scaling operations. Implementation in vector_scaling_operations.c. +// Description at bottom of file. +void WebRtcSpl_VectorBitShiftW16(WebRtc_Word16* out_vector, + WebRtc_Word16 vector_length, + G_CONST WebRtc_Word16* in_vector, + WebRtc_Word16 right_shifts); +void WebRtcSpl_VectorBitShiftW32(WebRtc_Word32* out_vector, + WebRtc_Word16 vector_length, + G_CONST WebRtc_Word32* in_vector, + WebRtc_Word16 right_shifts); +void WebRtcSpl_VectorBitShiftW32ToW16(WebRtc_Word16* out_vector, + WebRtc_Word16 vector_length, + G_CONST WebRtc_Word32* in_vector, + WebRtc_Word16 right_shifts); + +void WebRtcSpl_ScaleVector(G_CONST WebRtc_Word16* in_vector, + WebRtc_Word16* out_vector, + WebRtc_Word16 gain, + WebRtc_Word16 vector_length, + WebRtc_Word16 right_shifts); +void WebRtcSpl_ScaleVectorWithSat(G_CONST WebRtc_Word16* in_vector, + WebRtc_Word16* out_vector, + WebRtc_Word16 gain, + WebRtc_Word16 vector_length, + WebRtc_Word16 right_shifts); +void WebRtcSpl_ScaleAndAddVectors(G_CONST WebRtc_Word16* in_vector1, + WebRtc_Word16 gain1, int right_shifts1, + G_CONST WebRtc_Word16* in_vector2, + WebRtc_Word16 gain2, int right_shifts2, + WebRtc_Word16* out_vector, + int vector_length); +// End: Vector scaling operations. + +// iLBC specific functions. Implementations in ilbc_specific_functions.c. +// Description at bottom of file. +void WebRtcSpl_ScaleAndAddVectorsWithRound(WebRtc_Word16* in_vector1, + WebRtc_Word16 scale1, + WebRtc_Word16* in_vector2, + WebRtc_Word16 scale2, + WebRtc_Word16 right_shifts, + WebRtc_Word16* out_vector, + WebRtc_Word16 vector_length); +void WebRtcSpl_ReverseOrderMultArrayElements(WebRtc_Word16* out_vector, + G_CONST WebRtc_Word16* in_vector, + G_CONST WebRtc_Word16* window, + WebRtc_Word16 vector_length, + WebRtc_Word16 right_shifts); +void WebRtcSpl_ElementwiseVectorMult(WebRtc_Word16* out_vector, + G_CONST WebRtc_Word16* in_vector, + G_CONST WebRtc_Word16* window, + WebRtc_Word16 vector_length, + WebRtc_Word16 right_shifts); +void WebRtcSpl_AddVectorsAndShift(WebRtc_Word16* out_vector, + G_CONST WebRtc_Word16* in_vector1, + G_CONST WebRtc_Word16* in_vector2, + WebRtc_Word16 vector_length, + WebRtc_Word16 right_shifts); +void WebRtcSpl_AddAffineVectorToVector(WebRtc_Word16* out_vector, + WebRtc_Word16* in_vector, + WebRtc_Word16 gain, + WebRtc_Word32 add_constant, + WebRtc_Word16 right_shifts, + int vector_length); +void WebRtcSpl_AffineTransformVector(WebRtc_Word16* out_vector, + WebRtc_Word16* in_vector, + WebRtc_Word16 gain, + WebRtc_Word32 add_constant, + WebRtc_Word16 right_shifts, + int vector_length); +// End: iLBC specific functions. + +// Signal processing operations. Descriptions at bottom of this file. +int WebRtcSpl_AutoCorrelation(G_CONST WebRtc_Word16* vector, + int vector_length, int order, + WebRtc_Word32* result_vector, + int* scale); +WebRtc_Word16 WebRtcSpl_LevinsonDurbin(WebRtc_Word32* auto_corr, + WebRtc_Word16* lpc_coef, + WebRtc_Word16* refl_coef, + WebRtc_Word16 order); +void WebRtcSpl_ReflCoefToLpc(G_CONST WebRtc_Word16* refl_coef, + int use_order, + WebRtc_Word16* lpc_coef); +void WebRtcSpl_LpcToReflCoef(WebRtc_Word16* lpc_coef, + int use_order, + WebRtc_Word16* refl_coef); +void WebRtcSpl_AutoCorrToReflCoef(G_CONST WebRtc_Word32* auto_corr, + int use_order, + WebRtc_Word16* refl_coef); +void WebRtcSpl_CrossCorrelation(WebRtc_Word32* cross_corr, + WebRtc_Word16* vector1, + WebRtc_Word16* vector2, + WebRtc_Word16 dim_vector, + WebRtc_Word16 dim_cross_corr, + WebRtc_Word16 right_shifts, + WebRtc_Word16 step_vector2); +void WebRtcSpl_GetHanningWindow(WebRtc_Word16* window, WebRtc_Word16 size); +void WebRtcSpl_SqrtOfOneMinusXSquared(WebRtc_Word16* in_vector, + int vector_length, + WebRtc_Word16* out_vector); +// End: Signal processing operations. + +// Randomization functions. Implementations collected in randomization_functions.c and +// descriptions at bottom of this file. +WebRtc_UWord32 WebRtcSpl_IncreaseSeed(WebRtc_UWord32* seed); +WebRtc_Word16 WebRtcSpl_RandU(WebRtc_UWord32* seed); +WebRtc_Word16 WebRtcSpl_RandN(WebRtc_UWord32* seed); +WebRtc_Word16 WebRtcSpl_RandUArray(WebRtc_Word16* vector, + WebRtc_Word16 vector_length, + WebRtc_UWord32* seed); +// End: Randomization functions. + +// Math functions +WebRtc_Word32 WebRtcSpl_Sqrt(WebRtc_Word32 value); +WebRtc_Word32 WebRtcSpl_SqrtFloor(WebRtc_Word32 value); + +// Divisions. Implementations collected in division_operations.c and +// descriptions at bottom of this file. +WebRtc_UWord32 WebRtcSpl_DivU32U16(WebRtc_UWord32 num, WebRtc_UWord16 den); +WebRtc_Word32 WebRtcSpl_DivW32W16(WebRtc_Word32 num, WebRtc_Word16 den); +WebRtc_Word16 WebRtcSpl_DivW32W16ResW16(WebRtc_Word32 num, WebRtc_Word16 den); +WebRtc_Word32 WebRtcSpl_DivResultInQ31(WebRtc_Word32 num, WebRtc_Word32 den); +WebRtc_Word32 WebRtcSpl_DivW32HiLow(WebRtc_Word32 num, WebRtc_Word16 den_hi, + WebRtc_Word16 den_low); +// End: Divisions. + +WebRtc_Word32 WebRtcSpl_Energy(WebRtc_Word16* vector, + int vector_length, + int* scale_factor); + +WebRtc_Word32 WebRtcSpl_DotProductWithScale(WebRtc_Word16* vector1, + WebRtc_Word16* vector2, + int vector_length, + int scaling); + +// Filter operations. +int WebRtcSpl_FilterAR(G_CONST WebRtc_Word16* ar_coef, int ar_coef_length, + G_CONST WebRtc_Word16* in_vector, int in_vector_length, + WebRtc_Word16* filter_state, int filter_state_length, + WebRtc_Word16* filter_state_low, + int filter_state_low_length, WebRtc_Word16* out_vector, + WebRtc_Word16* out_vector_low, int out_vector_low_length); + +void WebRtcSpl_FilterMAFastQ12(WebRtc_Word16* in_vector, + WebRtc_Word16* out_vector, + WebRtc_Word16* ma_coef, + WebRtc_Word16 ma_coef_length, + WebRtc_Word16 vector_length); +void WebRtcSpl_FilterARFastQ12(WebRtc_Word16* in_vector, + WebRtc_Word16* out_vector, + WebRtc_Word16* ar_coef, + WebRtc_Word16 ar_coef_length, + WebRtc_Word16 vector_length); +int WebRtcSpl_DownsampleFast(WebRtc_Word16* in_vector, + WebRtc_Word16 in_vector_length, + WebRtc_Word16* out_vector, + WebRtc_Word16 out_vector_length, + WebRtc_Word16* ma_coef, + WebRtc_Word16 ma_coef_length, + WebRtc_Word16 factor, + WebRtc_Word16 delay); +// End: Filter operations. + +// FFT operations +int WebRtcSpl_ComplexFFT(WebRtc_Word16 vector[], int stages, int mode); +int WebRtcSpl_ComplexIFFT(WebRtc_Word16 vector[], int stages, int mode); +void WebRtcSpl_ComplexBitReverse(WebRtc_Word16 vector[], int stages); +// End: FFT operations + +/************************************************************ + * + * RESAMPLING FUNCTIONS AND THEIR STRUCTS ARE DEFINED BELOW + * + ************************************************************/ + +/******************************************************************* + * resample.c + * + * Includes the following resampling combinations + * 22 kHz -> 16 kHz + * 16 kHz -> 22 kHz + * 22 kHz -> 8 kHz + * 8 kHz -> 22 kHz + * + ******************************************************************/ + +// state structure for 22 -> 16 resampler +typedef struct +{ + WebRtc_Word32 S_22_44[8]; + WebRtc_Word32 S_44_32[8]; + WebRtc_Word32 S_32_16[8]; +} WebRtcSpl_State22khzTo16khz; + +void WebRtcSpl_Resample22khzTo16khz(const WebRtc_Word16* in, + WebRtc_Word16* out, + WebRtcSpl_State22khzTo16khz* state, + WebRtc_Word32* tmpmem); + +void WebRtcSpl_ResetResample22khzTo16khz(WebRtcSpl_State22khzTo16khz* state); + +// state structure for 16 -> 22 resampler +typedef struct +{ + WebRtc_Word32 S_16_32[8]; + WebRtc_Word32 S_32_22[8]; +} WebRtcSpl_State16khzTo22khz; + +void WebRtcSpl_Resample16khzTo22khz(const WebRtc_Word16* in, + WebRtc_Word16* out, + WebRtcSpl_State16khzTo22khz* state, + WebRtc_Word32* tmpmem); + +void WebRtcSpl_ResetResample16khzTo22khz(WebRtcSpl_State16khzTo22khz* state); + +// state structure for 22 -> 8 resampler +typedef struct +{ + WebRtc_Word32 S_22_22[16]; + WebRtc_Word32 S_22_16[8]; + WebRtc_Word32 S_16_8[8]; +} WebRtcSpl_State22khzTo8khz; + +void WebRtcSpl_Resample22khzTo8khz(const WebRtc_Word16* in, WebRtc_Word16* out, + WebRtcSpl_State22khzTo8khz* state, + WebRtc_Word32* tmpmem); + +void WebRtcSpl_ResetResample22khzTo8khz(WebRtcSpl_State22khzTo8khz* state); + +// state structure for 8 -> 22 resampler +typedef struct +{ + WebRtc_Word32 S_8_16[8]; + WebRtc_Word32 S_16_11[8]; + WebRtc_Word32 S_11_22[8]; +} WebRtcSpl_State8khzTo22khz; + +void WebRtcSpl_Resample8khzTo22khz(const WebRtc_Word16* in, WebRtc_Word16* out, + WebRtcSpl_State8khzTo22khz* state, + WebRtc_Word32* tmpmem); + +void WebRtcSpl_ResetResample8khzTo22khz(WebRtcSpl_State8khzTo22khz* state); + +/******************************************************************* + * resample_fractional.c + * Functions for internal use in the other resample functions + * + * Includes the following resampling combinations + * 48 kHz -> 32 kHz + * 32 kHz -> 24 kHz + * 44 kHz -> 32 kHz + * + ******************************************************************/ + +void WebRtcSpl_Resample48khzTo32khz(const WebRtc_Word32* In, WebRtc_Word32* Out, + const WebRtc_Word32 K); + +void WebRtcSpl_Resample32khzTo24khz(const WebRtc_Word32* In, WebRtc_Word32* Out, + const WebRtc_Word32 K); + +void WebRtcSpl_Resample44khzTo32khz(const WebRtc_Word32* In, WebRtc_Word32* Out, + const WebRtc_Word32 K); + +/******************************************************************* + * resample_48khz.c + * + * Includes the following resampling combinations + * 48 kHz -> 16 kHz + * 16 kHz -> 48 kHz + * 48 kHz -> 8 kHz + * 8 kHz -> 48 kHz + * + ******************************************************************/ + +typedef struct +{ + WebRtc_Word32 S_48_48[16]; + WebRtc_Word32 S_48_32[8]; + WebRtc_Word32 S_32_16[8]; +} WebRtcSpl_State48khzTo16khz; + +void WebRtcSpl_Resample48khzTo16khz(const WebRtc_Word16* in, WebRtc_Word16* out, + WebRtcSpl_State48khzTo16khz* state, + WebRtc_Word32* tmpmem); + +void WebRtcSpl_ResetResample48khzTo16khz(WebRtcSpl_State48khzTo16khz* state); + +typedef struct +{ + WebRtc_Word32 S_16_32[8]; + WebRtc_Word32 S_32_24[8]; + WebRtc_Word32 S_24_48[8]; +} WebRtcSpl_State16khzTo48khz; + +void WebRtcSpl_Resample16khzTo48khz(const WebRtc_Word16* in, WebRtc_Word16* out, + WebRtcSpl_State16khzTo48khz* state, + WebRtc_Word32* tmpmem); + +void WebRtcSpl_ResetResample16khzTo48khz(WebRtcSpl_State16khzTo48khz* state); + +typedef struct +{ + WebRtc_Word32 S_48_24[8]; + WebRtc_Word32 S_24_24[16]; + WebRtc_Word32 S_24_16[8]; + WebRtc_Word32 S_16_8[8]; +} WebRtcSpl_State48khzTo8khz; + +void WebRtcSpl_Resample48khzTo8khz(const WebRtc_Word16* in, WebRtc_Word16* out, + WebRtcSpl_State48khzTo8khz* state, + WebRtc_Word32* tmpmem); + +void WebRtcSpl_ResetResample48khzTo8khz(WebRtcSpl_State48khzTo8khz* state); + +typedef struct +{ + WebRtc_Word32 S_8_16[8]; + WebRtc_Word32 S_16_12[8]; + WebRtc_Word32 S_12_24[8]; + WebRtc_Word32 S_24_48[8]; +} WebRtcSpl_State8khzTo48khz; + +void WebRtcSpl_Resample8khzTo48khz(const WebRtc_Word16* in, WebRtc_Word16* out, + WebRtcSpl_State8khzTo48khz* state, + WebRtc_Word32* tmpmem); + +void WebRtcSpl_ResetResample8khzTo48khz(WebRtcSpl_State8khzTo48khz* state); + +/******************************************************************* + * resample_by_2.c + * + * Includes down and up sampling by a factor of two. + * + ******************************************************************/ + +void WebRtcSpl_DownsampleBy2(const WebRtc_Word16* in, const WebRtc_Word16 len, + WebRtc_Word16* out, WebRtc_Word32* filtState); + +void WebRtcSpl_UpsampleBy2(const WebRtc_Word16* in, WebRtc_Word16 len, WebRtc_Word16* out, + WebRtc_Word32* filtState); + +/************************************************************ + * END OF RESAMPLING FUNCTIONS + ************************************************************/ +void WebRtcSpl_AnalysisQMF(const WebRtc_Word16* in_data, + WebRtc_Word16* low_band, + WebRtc_Word16* high_band, + WebRtc_Word32* filter_state1, + WebRtc_Word32* filter_state2); +void WebRtcSpl_SynthesisQMF(const WebRtc_Word16* low_band, + const WebRtc_Word16* high_band, + WebRtc_Word16* out_data, + WebRtc_Word32* filter_state1, + WebRtc_Word32* filter_state2); + +#ifdef __cplusplus +} +#endif // __cplusplus +#endif // WEBRTC_SPL_SIGNAL_PROCESSING_LIBRARY_H_ + +// +// WebRtcSpl_AddSatW16(...) +// WebRtcSpl_AddSatW32(...) +// +// Returns the result of a saturated 16-bit, respectively 32-bit, addition of +// the numbers specified by the |var1| and |var2| parameters. +// +// Input: +// - var1 : Input variable 1 +// - var2 : Input variable 2 +// +// Return value : Added and saturated value +// + +// +// WebRtcSpl_SubSatW16(...) +// WebRtcSpl_SubSatW32(...) +// +// Returns the result of a saturated 16-bit, respectively 32-bit, subtraction +// of the numbers specified by the |var1| and |var2| parameters. +// +// Input: +// - var1 : Input variable 1 +// - var2 : Input variable 2 +// +// Returned value : Subtracted and saturated value +// + +// +// WebRtcSpl_GetSizeInBits(...) +// +// Returns the # of bits that are needed at the most to represent the number +// specified by the |value| parameter. +// +// Input: +// - value : Input value +// +// Return value : Number of bits needed to represent |value| +// + +// +// WebRtcSpl_NormW32(...) +// +// Norm returns the # of left shifts required to 32-bit normalize the 32-bit +// signed number specified by the |value| parameter. +// +// Input: +// - value : Input value +// +// Return value : Number of bit shifts needed to 32-bit normalize |value| +// + +// +// WebRtcSpl_NormW16(...) +// +// Norm returns the # of left shifts required to 16-bit normalize the 16-bit +// signed number specified by the |value| parameter. +// +// Input: +// - value : Input value +// +// Return value : Number of bit shifts needed to 32-bit normalize |value| +// + +// +// WebRtcSpl_NormU32(...) +// +// Norm returns the # of left shifts required to 32-bit normalize the unsigned +// 32-bit number specified by the |value| parameter. +// +// Input: +// - value : Input value +// +// Return value : Number of bit shifts needed to 32-bit normalize |value| +// + +// +// WebRtcSpl_GetScalingSquare(...) +// +// Returns the # of bits required to scale the samples specified in the +// |in_vector| parameter so that, if the squares of the samples are added the +// # of times specified by the |times| parameter, the 32-bit addition will not +// overflow (result in WebRtc_Word32). +// +// Input: +// - in_vector : Input vector to check scaling on +// - in_vector_length : Samples in |in_vector| +// - times : Number of additions to be performed +// +// Return value : Number of right bit shifts needed to avoid +// overflow in the addition calculation +// + +// +// WebRtcSpl_MemSetW16(...) +// +// Sets all the values in the WebRtc_Word16 vector |vector| of length +// |vector_length| to the specified value |set_value| +// +// Input: +// - vector : Pointer to the WebRtc_Word16 vector +// - set_value : Value specified +// - vector_length : Length of vector +// + +// +// WebRtcSpl_MemSetW32(...) +// +// Sets all the values in the WebRtc_Word32 vector |vector| of length +// |vector_length| to the specified value |set_value| +// +// Input: +// - vector : Pointer to the WebRtc_Word16 vector +// - set_value : Value specified +// - vector_length : Length of vector +// + +// +// WebRtcSpl_MemCpyReversedOrder(...) +// +// Copies all the values from the source WebRtc_Word16 vector |in_vector| to a +// destination WebRtc_Word16 vector |out_vector|. It is done in reversed order, +// meaning that the first sample of |in_vector| is copied to the last sample of +// the |out_vector|. The procedure continues until the last sample of +// |in_vector| has been copied to the first sample of |out_vector|. This +// creates a reversed vector. Used in e.g. prediction in iLBC. +// +// Input: +// - in_vector : Pointer to the first sample in a WebRtc_Word16 vector +// of length |length| +// - vector_length : Number of elements to copy +// +// Output: +// - out_vector : Pointer to the last sample in a WebRtc_Word16 vector +// of length |length| +// + +// +// WebRtcSpl_CopyFromEndW16(...) +// +// Copies the rightmost |samples| of |in_vector| (of length |in_vector_length|) +// to the vector |out_vector|. +// +// Input: +// - in_vector : Input vector +// - in_vector_length : Number of samples in |in_vector| +// - samples : Number of samples to extract (from right side) +// from |in_vector| +// +// Output: +// - out_vector : Vector with the requested samples +// +// Return value : Number of copied samples in |out_vector| +// + +// +// WebRtcSpl_ZerosArrayW16(...) +// WebRtcSpl_ZerosArrayW32(...) +// +// Inserts the value "zero" in all positions of a w16 and a w32 vector +// respectively. +// +// Input: +// - vector_length : Number of samples in vector +// +// Output: +// - vector : Vector containing all zeros +// +// Return value : Number of samples in vector +// + +// +// WebRtcSpl_OnesArrayW16(...) +// WebRtcSpl_OnesArrayW32(...) +// +// Inserts the value "one" in all positions of a w16 and a w32 vector +// respectively. +// +// Input: +// - vector_length : Number of samples in vector +// +// Output: +// - vector : Vector containing all ones +// +// Return value : Number of samples in vector +// + +// +// WebRtcSpl_MinValueW16(...) +// WebRtcSpl_MinValueW32(...) +// +// Returns the minimum value of a vector +// +// Input: +// - vector : Input vector +// - vector_length : Number of samples in vector +// +// Return value : Minimum sample value in vector +// + +// +// WebRtcSpl_MaxValueW16(...) +// WebRtcSpl_MaxValueW32(...) +// +// Returns the maximum value of a vector +// +// Input: +// - vector : Input vector +// - vector_length : Number of samples in vector +// +// Return value : Maximum sample value in vector +// + +// +// WebRtcSpl_MaxAbsValueW16(...) +// WebRtcSpl_MaxAbsValueW32(...) +// +// Returns the largest absolute value of a vector +// +// Input: +// - vector : Input vector +// - vector_length : Number of samples in vector +// +// Return value : Maximum absolute value in vector +// + +// +// WebRtcSpl_MaxAbsIndexW16(...) +// +// Returns the vector index to the largest absolute value of a vector +// +// Input: +// - vector : Input vector +// - vector_length : Number of samples in vector +// +// Return value : Index to maximum absolute value in vector +// + +// +// WebRtcSpl_MinIndexW16(...) +// WebRtcSpl_MinIndexW32(...) +// +// Returns the vector index to the minimum sample value of a vector +// +// Input: +// - vector : Input vector +// - vector_length : Number of samples in vector +// +// Return value : Index to minimum sample value in vector +// + +// +// WebRtcSpl_MaxIndexW16(...) +// WebRtcSpl_MaxIndexW32(...) +// +// Returns the vector index to the maximum sample value of a vector +// +// Input: +// - vector : Input vector +// - vector_length : Number of samples in vector +// +// Return value : Index to maximum sample value in vector +// + +// +// WebRtcSpl_VectorBitShiftW16(...) +// WebRtcSpl_VectorBitShiftW32(...) +// +// Bit shifts all the values in a vector up or downwards. Different calls for +// WebRtc_Word16 and WebRtc_Word32 vectors respectively. +// +// Input: +// - vector_length : Length of vector +// - in_vector : Pointer to the vector that should be bit shifted +// - right_shifts : Number of right bit shifts (negative value gives left +// shifts) +// +// Output: +// - out_vector : Pointer to the result vector (can be the same as +// |in_vector|) +// + +// +// WebRtcSpl_VectorBitShiftW32ToW16(...) +// +// Bit shifts all the values in a WebRtc_Word32 vector up or downwards and +// stores the result as a WebRtc_Word16 vector +// +// Input: +// - vector_length : Length of vector +// - in_vector : Pointer to the vector that should be bit shifted +// - right_shifts : Number of right bit shifts (negative value gives left +// shifts) +// +// Output: +// - out_vector : Pointer to the result vector (can be the same as +// |in_vector|) +// + +// +// WebRtcSpl_ScaleVector(...) +// +// Performs the vector operation: +// out_vector[k] = (gain*in_vector[k])>>right_shifts +// +// Input: +// - in_vector : Input vector +// - gain : Scaling gain +// - vector_length : Elements in the |in_vector| +// - right_shifts : Number of right bit shifts applied +// +// Output: +// - out_vector : Output vector (can be the same as |in_vector|) +// + +// +// WebRtcSpl_ScaleVectorWithSat(...) +// +// Performs the vector operation: +// out_vector[k] = SATURATE( (gain*in_vector[k])>>right_shifts ) +// +// Input: +// - in_vector : Input vector +// - gain : Scaling gain +// - vector_length : Elements in the |in_vector| +// - right_shifts : Number of right bit shifts applied +// +// Output: +// - out_vector : Output vector (can be the same as |in_vector|) +// + +// +// WebRtcSpl_ScaleAndAddVectors(...) +// +// Performs the vector operation: +// out_vector[k] = (gain1*in_vector1[k])>>right_shifts1 +// + (gain2*in_vector2[k])>>right_shifts2 +// +// Input: +// - in_vector1 : Input vector 1 +// - gain1 : Gain to be used for vector 1 +// - right_shifts1 : Right bit shift to be used for vector 1 +// - in_vector2 : Input vector 2 +// - gain2 : Gain to be used for vector 2 +// - right_shifts2 : Right bit shift to be used for vector 2 +// - vector_length : Elements in the input vectors +// +// Output: +// - out_vector : Output vector +// + +// +// WebRtcSpl_ScaleAndAddVectorsWithRound(...) +// +// Performs the vector operation: +// +// out_vector[k] = ((scale1*in_vector1[k]) + (scale2*in_vector2[k]) +// + round_value) >> right_shifts +// +// where: +// +// round_value = (1<>1 +// +// Input: +// - in_vector1 : Input vector 1 +// - scale1 : Gain to be used for vector 1 +// - in_vector2 : Input vector 2 +// - scale2 : Gain to be used for vector 2 +// - right_shifts : Number of right bit shifts to be applied +// - vector_length : Number of elements in the input vectors +// +// Output: +// - out_vector : Output vector +// + +// +// WebRtcSpl_ReverseOrderMultArrayElements(...) +// +// Performs the vector operation: +// out_vector[n] = (in_vector[n]*window[-n])>>right_shifts +// +// Input: +// - in_vector : Input vector +// - window : Window vector (should be reversed). The pointer +// should be set to the last value in the vector +// - right_shifts : Number of right bit shift to be applied after the +// multiplication +// - vector_length : Number of elements in |in_vector| +// +// Output: +// - out_vector : Output vector (can be same as |in_vector|) +// + +// +// WebRtcSpl_ElementwiseVectorMult(...) +// +// Performs the vector operation: +// out_vector[n] = (in_vector[n]*window[n])>>right_shifts +// +// Input: +// - in_vector : Input vector +// - window : Window vector. +// - right_shifts : Number of right bit shift to be applied after the +// multiplication +// - vector_length : Number of elements in |in_vector| +// +// Output: +// - out_vector : Output vector (can be same as |in_vector|) +// + +// +// WebRtcSpl_AddVectorsAndShift(...) +// +// Performs the vector operation: +// out_vector[k] = (in_vector1[k] + in_vector2[k])>>right_shifts +// +// Input: +// - in_vector1 : Input vector 1 +// - in_vector2 : Input vector 2 +// - right_shifts : Number of right bit shift to be applied after the +// multiplication +// - vector_length : Number of elements in |in_vector1| and |in_vector2| +// +// Output: +// - out_vector : Output vector (can be same as |in_vector1|) +// + +// +// WebRtcSpl_AddAffineVectorToVector(...) +// +// Adds an affine transformed vector to another vector |out_vector|, i.e, +// performs +// out_vector[k] += (in_vector[k]*gain+add_constant)>>right_shifts +// +// Input: +// - in_vector : Input vector +// - gain : Gain value, used to multiply the in vector with +// - add_constant : Constant value to add (usually 1<<(right_shifts-1), +// but others can be used as well +// - right_shifts : Number of right bit shifts (0-16) +// - vector_length : Number of samples in |in_vector| and |out_vector| +// +// Output: +// - out_vector : Vector with the output +// + +// +// WebRtcSpl_AffineTransformVector(...) +// +// Affine transforms a vector, i.e, performs +// out_vector[k] = (in_vector[k]*gain+add_constant)>>right_shifts +// +// Input: +// - in_vector : Input vector +// - gain : Gain value, used to multiply the in vector with +// - add_constant : Constant value to add (usually 1<<(right_shifts-1), +// but others can be used as well +// - right_shifts : Number of right bit shifts (0-16) +// - vector_length : Number of samples in |in_vector| and |out_vector| +// +// Output: +// - out_vector : Vector with the output +// + +// +// WebRtcSpl_AutoCorrelation(...) +// +// A 32-bit fix-point implementation of auto-correlation computation +// +// Input: +// - vector : Vector to calculate autocorrelation upon +// - vector_length : Length (in samples) of |vector| +// - order : The order up to which the autocorrelation should be +// calculated +// +// Output: +// - result_vector : auto-correlation values (values should be seen +// relative to each other since the absolute values +// might have been down shifted to avoid overflow) +// +// - scale : The number of left shifts required to obtain the +// auto-correlation in Q0 +// +// Return value : Number of samples in |result_vector|, i.e., (order+1) +// + +// +// WebRtcSpl_LevinsonDurbin(...) +// +// A 32-bit fix-point implementation of the Levinson-Durbin algorithm that +// does NOT use the 64 bit class +// +// Input: +// - auto_corr : Vector with autocorrelation values of length >= +// |use_order|+1 +// - use_order : The LPC filter order (support up to order 20) +// +// Output: +// - lpc_coef : lpc_coef[0..use_order] LPC coefficients in Q12 +// - refl_coef : refl_coef[0...use_order-1]| Reflection coefficients in +// Q15 +// +// Return value : 1 for stable 0 for unstable +// + +// +// WebRtcSpl_ReflCoefToLpc(...) +// +// Converts reflection coefficients |refl_coef| to LPC coefficients |lpc_coef|. +// This version is a 16 bit operation. +// +// NOTE: The 16 bit refl_coef -> lpc_coef conversion might result in a +// "slightly unstable" filter (i.e., a pole just outside the unit circle) in +// "rare" cases even if the reflection coefficients are stable. +// +// Input: +// - refl_coef : Reflection coefficients in Q15 that should be converted +// to LPC coefficients +// - use_order : Number of coefficients in |refl_coef| +// +// Output: +// - lpc_coef : LPC coefficients in Q12 +// + +// +// WebRtcSpl_LpcToReflCoef(...) +// +// Converts LPC coefficients |lpc_coef| to reflection coefficients |refl_coef|. +// This version is a 16 bit operation. +// The conversion is implemented by the step-down algorithm. +// +// Input: +// - lpc_coef : LPC coefficients in Q12, that should be converted to +// reflection coefficients +// - use_order : Number of coefficients in |lpc_coef| +// +// Output: +// - refl_coef : Reflection coefficients in Q15. +// + +// +// WebRtcSpl_AutoCorrToReflCoef(...) +// +// Calculates reflection coefficients (16 bit) from auto-correlation values +// +// Input: +// - auto_corr : Auto-correlation values +// - use_order : Number of coefficients wanted be calculated +// +// Output: +// - refl_coef : Reflection coefficients in Q15. +// + +// +// WebRtcSpl_CrossCorrelation(...) +// +// Calculates the cross-correlation between two sequences |vector1| and +// |vector2|. |vector1| is fixed and |vector2| slides as the pointer is +// increased with the amount |step_vector2| +// +// Input: +// - vector1 : First sequence (fixed throughout the correlation) +// - vector2 : Second sequence (slides |step_vector2| for each +// new correlation) +// - dim_vector : Number of samples to use in the cross-correlation +// - dim_cross_corr : Number of cross-correlations to calculate (the +// start position for |vector2| is updated for each +// new one) +// - right_shifts : Number of right bit shifts to use. This will +// become the output Q-domain. +// - step_vector2 : How many (positive or negative) steps the +// |vector2| pointer should be updated for each new +// cross-correlation value. +// +// Output: +// - cross_corr : The cross-correlation in Q(-right_shifts) +// + +// +// WebRtcSpl_GetHanningWindow(...) +// +// Creates (the first half of) a Hanning window. Size must be at least 1 and +// at most 512. +// +// Input: +// - size : Length of the requested Hanning window (1 to 512) +// +// Output: +// - window : Hanning vector in Q14. +// + +// +// WebRtcSpl_SqrtOfOneMinusXSquared(...) +// +// Calculates y[k] = sqrt(1 - x[k]^2) for each element of the input vector +// |in_vector|. Input and output values are in Q15. +// +// Inputs: +// - in_vector : Values to calculate sqrt(1 - x^2) of +// - vector_length : Length of vector |in_vector| +// +// Output: +// - out_vector : Output values in Q15 +// + +// +// WebRtcSpl_IncreaseSeed(...) +// +// Increases the seed (and returns the new value) +// +// Input: +// - seed : Seed for random calculation +// +// Output: +// - seed : Updated seed value +// +// Return value : The new seed value +// + +// +// WebRtcSpl_RandU(...) +// +// Produces a uniformly distributed value in the WebRtc_Word16 range +// +// Input: +// - seed : Seed for random calculation +// +// Output: +// - seed : Updated seed value +// +// Return value : Uniformly distributed value in the range +// [Word16_MIN...Word16_MAX] +// + +// +// WebRtcSpl_RandN(...) +// +// Produces a normal distributed value in the WebRtc_Word16 range +// +// Input: +// - seed : Seed for random calculation +// +// Output: +// - seed : Updated seed value +// +// Return value : N(0,1) value in the Q13 domain +// + +// +// WebRtcSpl_RandUArray(...) +// +// Produces a uniformly distributed vector with elements in the WebRtc_Word16 +// range +// +// Input: +// - vector_length : Samples wanted in the vector +// - seed : Seed for random calculation +// +// Output: +// - vector : Vector with the uniform values +// - seed : Updated seed value +// +// Return value : Number of samples in vector, i.e., |vector_length| +// + +// +// WebRtcSpl_Sqrt(...) +// +// Returns the square root of the input value |value|. The precision of this +// function is integer precision, i.e., sqrt(8) gives 2 as answer. +// If |value| is a negative number then 0 is returned. +// +// Algorithm: +// +// A sixth order Taylor Series expansion is used here to compute the square +// root of a number y^0.5 = (1+x)^0.5 +// where +// x = y-1 +// = 1+(x/2)-0.5*((x/2)^2+0.5*((x/2)^3-0.625*((x/2)^4+0.875*((x/2)^5) +// 0.5 <= x < 1 +// +// Input: +// - value : Value to calculate sqrt of +// +// Return value : Result of the sqrt calculation +// + +// +// WebRtcSpl_SqrtFloor(...) +// +// Returns the square root of the input value |value|. The precision of this +// function is rounding down integer precision, i.e., sqrt(8) gives 2 as answer. +// If |value| is a negative number then 0 is returned. +// +// Algorithm: +// +// An iterative 4 cylce/bit routine +// +// Input: +// - value : Value to calculate sqrt of +// +// Return value : Result of the sqrt calculation +// + +// +// WebRtcSpl_DivU32U16(...) +// +// Divides a WebRtc_UWord32 |num| by a WebRtc_UWord16 |den|. +// +// If |den|==0, (WebRtc_UWord32)0xFFFFFFFF is returned. +// +// Input: +// - num : Numerator +// - den : Denominator +// +// Return value : Result of the division (as a WebRtc_UWord32), i.e., the +// integer part of num/den. +// + +// +// WebRtcSpl_DivW32W16(...) +// +// Divides a WebRtc_Word32 |num| by a WebRtc_Word16 |den|. +// +// If |den|==0, (WebRtc_Word32)0x7FFFFFFF is returned. +// +// Input: +// - num : Numerator +// - den : Denominator +// +// Return value : Result of the division (as a WebRtc_Word32), i.e., the +// integer part of num/den. +// + +// +// WebRtcSpl_DivW32W16ResW16(...) +// +// Divides a WebRtc_Word32 |num| by a WebRtc_Word16 |den|, assuming that the +// result is less than 32768, otherwise an unpredictable result will occur. +// +// If |den|==0, (WebRtc_Word16)0x7FFF is returned. +// +// Input: +// - num : Numerator +// - den : Denominator +// +// Return value : Result of the division (as a WebRtc_Word16), i.e., the +// integer part of num/den. +// + +// +// WebRtcSpl_DivResultInQ31(...) +// +// Divides a WebRtc_Word32 |num| by a WebRtc_Word16 |den|, assuming that the +// absolute value of the denominator is larger than the numerator, otherwise +// an unpredictable result will occur. +// +// Input: +// - num : Numerator +// - den : Denominator +// +// Return value : Result of the division in Q31. +// + +// +// WebRtcSpl_DivW32HiLow(...) +// +// Divides a WebRtc_Word32 |num| by a denominator in hi, low format. The +// absolute value of the denominator has to be larger (or equal to) the +// numerator. +// +// Input: +// - num : Numerator +// - den_hi : High part of denominator +// - den_low : Low part of denominator +// +// Return value : Divided value in Q31 +// + +// +// WebRtcSpl_Energy(...) +// +// Calculates the energy of a vector +// +// Input: +// - vector : Vector which the energy should be calculated on +// - vector_length : Number of samples in vector +// +// Output: +// - scale_factor : Number of left bit shifts needed to get the physical +// energy value, i.e, to get the Q0 value +// +// Return value : Energy value in Q(-|scale_factor|) +// + +// +// WebRtcSpl_FilterAR(...) +// +// Performs a 32-bit AR filtering on a vector in Q12 +// +// Input: +// - ar_coef : AR-coefficient vector (values in Q12), +// ar_coef[0] must be 4096. +// - ar_coef_length : Number of coefficients in |ar_coef|. +// - in_vector : Vector to be filtered. +// - in_vector_length : Number of samples in |in_vector|. +// - filter_state : Current state (higher part) of the filter. +// - filter_state_length : Length (in samples) of |filter_state|. +// - filter_state_low : Current state (lower part) of the filter. +// - filter_state_low_length : Length (in samples) of |filter_state_low|. +// - out_vector_low_length : Maximum length (in samples) of +// |out_vector_low|. +// +// Output: +// - filter_state : Updated state (upper part) vector. +// - filter_state_low : Updated state (lower part) vector. +// - out_vector : Vector containing the upper part of the +// filtered values. +// - out_vector_low : Vector containing the lower part of the +// filtered values. +// +// Return value : Number of samples in the |out_vector|. +// + +// +// WebRtcSpl_FilterMAFastQ12(...) +// +// Performs a MA filtering on a vector in Q12 +// +// Input: +// - in_vector : Input samples (state in positions +// in_vector[-order] .. in_vector[-1]) +// - ma_coef : Filter coefficients (in Q12) +// - ma_coef_length : Number of B coefficients (order+1) +// - vector_length : Number of samples to be filtered +// +// Output: +// - out_vector : Filtered samples +// + +// +// WebRtcSpl_FilterARFastQ12(...) +// +// Performs a AR filtering on a vector in Q12 +// +// Input: +// - in_vector : Input samples +// - out_vector : State information in positions +// out_vector[-order] .. out_vector[-1] +// - ar_coef : Filter coefficients (in Q12) +// - ar_coef_length : Number of B coefficients (order+1) +// - vector_length : Number of samples to be filtered +// +// Output: +// - out_vector : Filtered samples +// + +// +// WebRtcSpl_DownsampleFast(...) +// +// Performs a MA down sampling filter on a vector +// +// Input: +// - in_vector : Input samples (state in positions +// in_vector[-order] .. in_vector[-1]) +// - in_vector_length : Number of samples in |in_vector| to be filtered. +// This must be at least +// |delay| + |factor|*(|out_vector_length|-1) + 1) +// - out_vector_length : Number of down sampled samples desired +// - ma_coef : Filter coefficients (in Q12) +// - ma_coef_length : Number of B coefficients (order+1) +// - factor : Decimation factor +// - delay : Delay of filter (compensated for in out_vector) +// +// Output: +// - out_vector : Filtered samples +// +// Return value : 0 if OK, -1 if |in_vector| is too short +// + +// +// WebRtcSpl_DotProductWithScale(...) +// +// Calculates the dot product between two (WebRtc_Word16) vectors +// +// Input: +// - vector1 : Vector 1 +// - vector2 : Vector 2 +// - vector_length : Number of samples used in the dot product +// - scaling : The number of right bit shifts to apply on each term +// during calculation to avoid overflow, i.e., the +// output will be in Q(-|scaling|) +// +// Return value : The dot product in Q(-scaling) +// + +// +// WebRtcSpl_ComplexIFFT(...) +// +// Complex Inverse FFT +// +// Computes an inverse complex 2^|stages|-point FFT on the input vector, which +// is in bit-reversed order. The original content of the vector is destroyed in +// the process, since the input is overwritten by the output, normal-ordered, +// FFT vector. With X as the input complex vector, y as the output complex +// vector and with M = 2^|stages|, the following is computed: +// +// M-1 +// y(k) = sum[X(i)*[cos(2*pi*i*k/M) + j*sin(2*pi*i*k/M)]] +// i=0 +// +// The implementations are optimized for speed, not for code size. It uses the +// decimation-in-time algorithm with radix-2 butterfly technique. +// +// Input: +// - vector : In pointer to complex vector containing 2^|stages| +// real elements interleaved with 2^|stages| imaginary +// elements. +// [ReImReImReIm....] +// The elements are in Q(-scale) domain, see more on Return +// Value below. +// +// - stages : Number of FFT stages. Must be at least 3 and at most 10, +// since the table WebRtcSpl_kSinTable1024[] is 1024 +// elements long. +// +// - mode : This parameter gives the user to choose how the FFT +// should work. +// mode==0: Low-complexity and Low-accuracy mode +// mode==1: High-complexity and High-accuracy mode +// +// Output: +// - vector : Out pointer to the FFT vector (the same as input). +// +// Return Value : The scale value that tells the number of left bit shifts +// that the elements in the |vector| should be shifted with +// in order to get Q0 values, i.e. the physically correct +// values. The scale parameter is always 0 or positive, +// except if N>1024 (|stages|>10), which returns a scale +// value of -1, indicating error. +// + +// +// WebRtcSpl_ComplexFFT(...) +// +// Complex FFT +// +// Computes a complex 2^|stages|-point FFT on the input vector, which is in +// bit-reversed order. The original content of the vector is destroyed in +// the process, since the input is overwritten by the output, normal-ordered, +// FFT vector. With x as the input complex vector, Y as the output complex +// vector and with M = 2^|stages|, the following is computed: +// +// M-1 +// Y(k) = 1/M * sum[x(i)*[cos(2*pi*i*k/M) + j*sin(2*pi*i*k/M)]] +// i=0 +// +// The implementations are optimized for speed, not for code size. It uses the +// decimation-in-time algorithm with radix-2 butterfly technique. +// +// This routine prevents overflow by scaling by 2 before each FFT stage. This is +// a fixed scaling, for proper normalization - there will be log2(n) passes, so +// this results in an overall factor of 1/n, distributed to maximize arithmetic +// accuracy. +// +// Input: +// - vector : In pointer to complex vector containing 2^|stages| real +// elements interleaved with 2^|stages| imaginary elements. +// [ReImReImReIm....] +// The output is in the Q0 domain. +// +// - stages : Number of FFT stages. Must be at least 3 and at most 10, +// since the table WebRtcSpl_kSinTable1024[] is 1024 +// elements long. +// +// - mode : This parameter gives the user to choose how the FFT +// should work. +// mode==0: Low-complexity and Low-accuracy mode +// mode==1: High-complexity and High-accuracy mode +// +// Output: +// - vector : The output FFT vector is in the Q0 domain. +// +// Return value : The scale parameter is always 0, except if N>1024, +// which returns a scale value of -1, indicating error. +// + +// +// WebRtcSpl_ComplexBitReverse(...) +// +// Complex Bit Reverse +// +// This function bit-reverses the position of elements in the complex input +// vector into the output vector. +// +// If you bit-reverse a linear-order array, you obtain a bit-reversed order +// array. If you bit-reverse a bit-reversed order array, you obtain a +// linear-order array. +// +// Input: +// - vector : In pointer to complex vector containing 2^|stages| real +// elements interleaved with 2^|stages| imaginary elements. +// [ReImReImReIm....] +// - stages : Number of FFT stages. Must be at least 3 and at most 10, +// since the table WebRtcSpl_kSinTable1024[] is 1024 +// elements long. +// +// Output: +// - vector : Out pointer to complex vector in bit-reversed order. +// The input vector is over written. +// + +// +// WebRtcSpl_AnalysisQMF(...) +// +// Splits a 0-2*F Hz signal into two sub bands: 0-F Hz and F-2*F Hz. The +// current version has F = 8000, therefore, a super-wideband audio signal is +// split to lower-band 0-8 kHz and upper-band 8-16 kHz. +// +// Input: +// - in_data : Wide band speech signal, 320 samples (10 ms) +// +// Input & Output: +// - filter_state1 : Filter state for first All-pass filter +// - filter_state2 : Filter state for second All-pass filter +// +// Output: +// - low_band : Lower-band signal 0-8 kHz band, 160 samples (10 ms) +// - high_band : Upper-band signal 8-16 kHz band (flipped in frequency +// domain), 160 samples (10 ms) +// + +// +// WebRtcSpl_SynthesisQMF(...) +// +// Combines the two sub bands (0-F and F-2*F Hz) into a signal of 0-2*F +// Hz, (current version has F = 8000 Hz). So the filter combines lower-band +// (0-8 kHz) and upper-band (8-16 kHz) channels to obtain super-wideband 0-16 +// kHz audio. +// +// Input: +// - low_band : The signal with the 0-8 kHz band, 160 samples (10 ms) +// - high_band : The signal with the 8-16 kHz band, 160 samples (10 ms) +// +// Input & Output: +// - filter_state1 : Filter state for first All-pass filter +// - filter_state2 : Filter state for second All-pass filter +// +// Output: +// - out_data : Super-wideband speech signal, 0-16 kHz +// + +// WebRtc_Word16 WebRtcSpl_SatW32ToW16(...) +// +// This function saturates a 32-bit word into a 16-bit word. +// +// Input: +// - value32 : The value of a 32-bit word. +// +// Output: +// - out16 : the saturated 16-bit word. +// + +// int32_t WebRtc_MulAccumW16(...) +// +// This function multiply a 16-bit word by a 16-bit word, and accumulate this +// value to a 32-bit integer. +// +// Input: +// - a : The value of the first 16-bit word. +// - b : The value of the second 16-bit word. +// - c : The value of an 32-bit integer. +// +// Return Value: The value of a * b + c. +// + +// WebRtc_Word16 WebRtcSpl_get_version(...) +// +// This function gives the version string of the Signal Processing Library. +// +// Input: +// - length_in_bytes : The size of Allocated space (in Bytes) where +// the version number is written to (in string format). +// +// Output: +// - version : Pointer to a buffer where the version number is written to. +// diff --git a/src/mod/codecs/mod_iSAC/spectrum_ar_model_tables.c b/src/mod/codecs/mod_iSAC/spectrum_ar_model_tables.c new file mode 100644 index 0000000000..92b9c4d626 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/spectrum_ar_model_tables.c @@ -0,0 +1,138 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#include "spectrum_ar_model_tables.h" +#include "settings.h" + +/********************* AR Coefficient Tables ************************/ +/* cdf for quantized reflection coefficient 1 */ +const WebRtc_UWord16 WebRtcIsac_kQArRc1Cdf[12] = { + 0, 2, 4, 129, 7707, 57485, 65495, 65527, 65529, 65531, + 65533, 65535}; + +/* cdf for quantized reflection coefficient 2 */ +const WebRtc_UWord16 WebRtcIsac_kQArRc2Cdf[12] = { + 0, 2, 4, 7, 531, 25298, 64525, 65526, 65529, 65531, + 65533, 65535}; + +/* cdf for quantized reflection coefficient 3 */ +const WebRtc_UWord16 WebRtcIsac_kQArRc3Cdf[12] = { + 0, 2, 4, 6, 620, 22898, 64843, 65527, 65529, 65531, + 65533, 65535}; + +/* cdf for quantized reflection coefficient 4 */ +const WebRtc_UWord16 WebRtcIsac_kQArRc4Cdf[12] = { + 0, 2, 4, 6, 35, 10034, 60733, 65506, 65529, 65531, + 65533, 65535}; + +/* cdf for quantized reflection coefficient 5 */ +const WebRtc_UWord16 WebRtcIsac_kQArRc5Cdf[12] = { + 0, 2, 4, 6, 36, 7567, 56727, 65385, 65529, 65531, + 65533, 65535}; + +/* cdf for quantized reflection coefficient 6 */ +const WebRtc_UWord16 WebRtcIsac_kQArRc6Cdf[12] = { + 0, 2, 4, 6, 14, 6579, 57360, 65409, 65529, 65531, + 65533, 65535}; + +/* representation levels for quantized reflection coefficient 1 */ +const WebRtc_Word16 WebRtcIsac_kQArRc1Levels[11] = { + -32104, -29007, -23202, -15496, -9279, -2577, 5934, 17535, 24512, 29503, 32104 +}; + +/* representation levels for quantized reflection coefficient 2 */ +const WebRtc_Word16 WebRtcIsac_kQArRc2Levels[11] = { + -32104, -29503, -23494, -15261, -7309, -1399, 6158, 16381, 24512, 29503, 32104 +}; + +/* representation levels for quantized reflection coefficient 3 */ +const WebRtc_Word16 WebRtcIsac_kQArRc3Levels[11] = { +-32104, -29503, -23157, -15186, -7347, -1359, 5829, 17535, 24512, 29503, 32104 +}; + +/* representation levels for quantized reflection coefficient 4 */ +const WebRtc_Word16 WebRtcIsac_kQArRc4Levels[11] = { +-32104, -29503, -24512, -15362, -6665, -342, 6596, 14585, 24512, 29503, 32104 +}; + +/* representation levels for quantized reflection coefficient 5 */ +const WebRtc_Word16 WebRtcIsac_kQArRc5Levels[11] = { +-32104, -29503, -24512, -15005, -6564, -106, 7123, 14920, 24512, 29503, 32104 +}; + +/* representation levels for quantized reflection coefficient 6 */ +const WebRtc_Word16 WebRtcIsac_kQArRc6Levels[11] = { +-32104, -29503, -24512, -15096, -6656, -37, 7036, 14847, 24512, 29503, 32104 +}; + +/* quantization boundary levels for reflection coefficients */ +const WebRtc_Word16 WebRtcIsac_kQArBoundaryLevels[12] = { +-32768, -31441, -27566, -21458, -13612, -4663, 4663, 13612, 21458, 27566, 31441, 32767 +}; + +/* initial index for AR reflection coefficient quantizer and cdf table search */ +const WebRtc_UWord16 WebRtcIsac_kQArRcInitIndex[6] = { + 5, 5, 5, 5, 5, 5}; + +/* pointers to AR cdf tables */ +const WebRtc_UWord16 *WebRtcIsac_kQArRcCdfPtr[AR_ORDER] = { + WebRtcIsac_kQArRc1Cdf, WebRtcIsac_kQArRc2Cdf, WebRtcIsac_kQArRc3Cdf, + WebRtcIsac_kQArRc4Cdf, WebRtcIsac_kQArRc5Cdf, WebRtcIsac_kQArRc6Cdf +}; + +/* pointers to AR representation levels tables */ +const WebRtc_Word16 *WebRtcIsac_kQArRcLevelsPtr[AR_ORDER] = { + WebRtcIsac_kQArRc1Levels, WebRtcIsac_kQArRc2Levels, WebRtcIsac_kQArRc3Levels, + WebRtcIsac_kQArRc4Levels, WebRtcIsac_kQArRc5Levels, WebRtcIsac_kQArRc6Levels +}; + + +/******************** GAIN Coefficient Tables ***********************/ +/* cdf for Gain coefficient */ +const WebRtc_UWord16 WebRtcIsac_kQGainCdf[19] = { + 0, 2, 4, 6, 8, 10, 12, 14, 16, 1172, + 11119, 29411, 51699, 64445, 65527, 65529, 65531, 65533, 65535}; + +/* representation levels for quantized squared Gain coefficient */ +const WebRtc_Word32 WebRtcIsac_kQGain2Levels[18] = { +// 17, 28, 46, 76, 128, 215, 364, 709, 1268, 1960, 3405, 6078, 11286, 17827, 51918, 134498, 487432, 2048000}; + 128, 128, 128, 128, 128, 215, 364, 709, 1268, 1960, 3405, 6078, 11286, 17827, 51918, 134498, 487432, 2048000}; +/* quantization boundary levels for squared Gain coefficient */ +const WebRtc_Word32 WebRtcIsac_kQGain2BoundaryLevels[19] = { +0, 21, 35, 59, 99, 166, 280, 475, 815, 1414, 2495, 4505, 8397, 16405, 34431, 81359, 240497, 921600, 0x7FFFFFFF}; + +/* pointers to Gain cdf table */ +const WebRtc_UWord16 *WebRtcIsac_kQGainCdf_ptr[1] = {WebRtcIsac_kQGainCdf}; + +/* Gain initial index for gain quantizer and cdf table search */ +const WebRtc_UWord16 WebRtcIsac_kQGainInitIndex[1] = {11}; + +/************************* Cosine Tables ****************************/ +/* Cosine table */ +const WebRtc_Word16 WebRtcIsac_kCos[6][60] = { +{512, 512, 511, 510, 508, 507, 505, 502, 499, 496, 493, 489, 485, 480, 476, 470, 465, 459, 453, 447, +440, 433, 426, 418, 410, 402, 394, 385, 376, 367, 357, 348, 338, 327, 317, 306, 295, 284, 273, 262, +250, 238, 226, 214, 202, 190, 177, 165, 152, 139, 126, 113, 100, 87, 73, 60, 47, 33, 20, 7}, +{512, 510, 508, 503, 498, 491, 483, 473, 462, 450, 437, 422, 406, 389, 371, 352, 333, 312, 290, 268, +244, 220, 196, 171, 145, 120, 93, 67, 40, 13, -13, -40, -67, -93, -120, -145, -171, -196, -220, -244, +-268, -290, -312, -333, -352, -371, -389, -406, -422, -437, -450, -462, -473, -483, -491, -498, -503, -508, -510, -512}, +{512, 508, 502, 493, 480, 465, 447, 426, 402, 376, 348, 317, 284, 250, 214, 177, 139, 100, 60, 20, +-20, -60, -100, -139, -177, -214, -250, -284, -317, -348, -376, -402, -426, -447, -465, -480, -493, -502, -508, -512, +-512, -508, -502, -493, -480, -465, -447, -426, -402, -376, -348, -317, -284, -250, -214, -177, -139, -100, -60, -20}, +{511, 506, 495, 478, 456, 429, 398, 362, 322, 279, 232, 183, 133, 80, 27, -27, -80, -133, -183, -232, +-279, -322, -362, -398, -429, -456, -478, -495, -506, -511, -511, -506, -495, -478, -456, -429, -398, -362, -322, -279, +-232, -183, -133, -80, -27, 27, 80, 133, 183, 232, 279, 322, 362, 398, 429, 456, 478, 495, 506, 511}, +{511, 502, 485, 459, 426, 385, 338, 284, 226, 165, 100, 33, -33, -100, -165, -226, -284, -338, -385, -426, +-459, -485, -502, -511, -511, -502, -485, -459, -426, -385, -338, -284, -226, -165, -100, -33, 33, 100, 165, 226, +284, 338, 385, 426, 459, 485, 502, 511, 511, 502, 485, 459, 426, 385, 338, 284, 226, 165, 100, 33}, +{510, 498, 473, 437, 389, 333, 268, 196, 120, 40, -40, -120, -196, -268, -333, -389, -437, -473, -498, -510, +-510, -498, -473, -437, -389, -333, -268, -196, -120, -40, 40, 120, 196, 268, 333, 389, 437, 473, 498, 510, +510, 498, 473, 437, 389, 333, 268, 196, 120, 40, -40, -120, -196, -268, -333, -389, -437, -473, -498, -510} +}; diff --git a/src/mod/codecs/mod_iSAC/spectrum_ar_model_tables.h b/src/mod/codecs/mod_iSAC/spectrum_ar_model_tables.h new file mode 100644 index 0000000000..159245bd98 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/spectrum_ar_model_tables.h @@ -0,0 +1,76 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * spectrum_ar_model_tables.h + * + * This file contains definitions of tables with AR coefficients, + * Gain coefficients and cosine tables. + * + */ + +#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_SPECTRUM_AR_MODEL_TABLES_H_ +#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_SPECTRUM_AR_MODEL_TABLES_H_ + +#include "structs.h" + +/********************* AR Coefficient Tables ************************/ +/* cdf for quantized reflection coefficient 1 */ +extern const WebRtc_UWord16 WebRtcIsac_kQArRc1Cdf[12]; + +/* cdf for quantized reflection coefficient 2 */ +extern const WebRtc_UWord16 WebRtcIsac_kQArRc2Cdf[12]; + +/* cdf for quantized reflection coefficient 3 */ +extern const WebRtc_UWord16 WebRtcIsac_kQArRc3Cdf[12]; + +/* cdf for quantized reflection coefficient 4 */ +extern const WebRtc_UWord16 WebRtcIsac_kQArRc4Cdf[12]; + +/* cdf for quantized reflection coefficient 5 */ +extern const WebRtc_UWord16 WebRtcIsac_kQArRc5Cdf[12]; + +/* cdf for quantized reflection coefficient 6 */ +extern const WebRtc_UWord16 WebRtcIsac_kQArRc6Cdf[12]; + +/* quantization boundary levels for reflection coefficients */ +extern const WebRtc_Word16 WebRtcIsac_kQArBoundaryLevels[12]; + +/* initial indices for AR reflection coefficient quantizer and cdf table search */ +extern const WebRtc_UWord16 WebRtcIsac_kQArRcInitIndex[AR_ORDER]; + +/* pointers to AR cdf tables */ +extern const WebRtc_UWord16 *WebRtcIsac_kQArRcCdfPtr[AR_ORDER]; + +/* pointers to AR representation levels tables */ +extern const WebRtc_Word16 *WebRtcIsac_kQArRcLevelsPtr[AR_ORDER]; + + +/******************** GAIN Coefficient Tables ***********************/ +/* cdf for Gain coefficient */ +extern const WebRtc_UWord16 WebRtcIsac_kQGainCdf[19]; + +/* representation levels for quantized Gain coefficient */ +extern const WebRtc_Word32 WebRtcIsac_kQGain2Levels[18]; + +/* squared quantization boundary levels for Gain coefficient */ +extern const WebRtc_Word32 WebRtcIsac_kQGain2BoundaryLevels[19]; + +/* pointer to Gain cdf table */ +extern const WebRtc_UWord16 *WebRtcIsac_kQGainCdf_ptr[1]; + +/* Gain initial index for gain quantizer and cdf table search */ +extern const WebRtc_UWord16 WebRtcIsac_kQGainInitIndex[1]; + +/************************* Cosine Tables ****************************/ +/* Cosine table */ +extern const WebRtc_Word16 WebRtcIsac_kCos[6][60]; + +#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_SPECTRUM_AR_MODEL_TABLES_H_ */ diff --git a/src/mod/codecs/mod_iSAC/spl_inl.h b/src/mod/codecs/mod_iSAC/spl_inl.h new file mode 100644 index 0000000000..23b32099a3 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/spl_inl.h @@ -0,0 +1,159 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + + +// This header file includes the inline functions in +// the fix point signal processing library. + +#ifndef WEBRTC_SPL_SPL_INL_H_ +#define WEBRTC_SPL_SPL_INL_H_ + +#ifdef WEBRTC_ARCH_ARM_V7A +#include "spl_inl_armv7.h" +#else + +static __inline WebRtc_Word16 WebRtcSpl_SatW32ToW16(WebRtc_Word32 value32) { + WebRtc_Word16 out16 = (WebRtc_Word16) value32; + + if (value32 > 32767) + out16 = 32767; + else if (value32 < -32768) + out16 = -32768; + + return out16; +} + +static __inline WebRtc_Word16 WebRtcSpl_AddSatW16(WebRtc_Word16 a, + WebRtc_Word16 b) { + return WebRtcSpl_SatW32ToW16((WebRtc_Word32) a + (WebRtc_Word32) b); +} + +static __inline WebRtc_Word32 WebRtcSpl_AddSatW32(WebRtc_Word32 l_var1, + WebRtc_Word32 l_var2) { + WebRtc_Word32 l_sum; + + // perform long addition + l_sum = l_var1 + l_var2; + + // check for under or overflow + if (WEBRTC_SPL_IS_NEG(l_var1)) { + if (WEBRTC_SPL_IS_NEG(l_var2) && !WEBRTC_SPL_IS_NEG(l_sum)) { + l_sum = (WebRtc_Word32)0x80000000; + } + } else { + if (!WEBRTC_SPL_IS_NEG(l_var2) && WEBRTC_SPL_IS_NEG(l_sum)) { + l_sum = (WebRtc_Word32)0x7FFFFFFF; + } + } + + return l_sum; +} + +static __inline WebRtc_Word16 WebRtcSpl_SubSatW16(WebRtc_Word16 var1, + WebRtc_Word16 var2) { + return WebRtcSpl_SatW32ToW16((WebRtc_Word32) var1 - (WebRtc_Word32) var2); +} + +static __inline WebRtc_Word32 WebRtcSpl_SubSatW32(WebRtc_Word32 l_var1, + WebRtc_Word32 l_var2) { + WebRtc_Word32 l_diff; + + // perform subtraction + l_diff = l_var1 - l_var2; + + // check for underflow + if ((l_var1 < 0) && (l_var2 > 0) && (l_diff > 0)) + l_diff = (WebRtc_Word32)0x80000000; + // check for overflow + if ((l_var1 > 0) && (l_var2 < 0) && (l_diff < 0)) + l_diff = (WebRtc_Word32)0x7FFFFFFF; + + return l_diff; +} + +static __inline WebRtc_Word16 WebRtcSpl_GetSizeInBits(WebRtc_UWord32 n) { + int bits; + + if (0xFFFF0000 & n) { + bits = 16; + } else { + bits = 0; + } + if (0x0000FF00 & (n >> bits)) bits += 8; + if (0x000000F0 & (n >> bits)) bits += 4; + if (0x0000000C & (n >> bits)) bits += 2; + if (0x00000002 & (n >> bits)) bits += 1; + if (0x00000001 & (n >> bits)) bits += 1; + + return bits; +} + +static __inline int WebRtcSpl_NormW32(WebRtc_Word32 a) { + int zeros; + + if (a <= 0) a ^= 0xFFFFFFFF; + + if (!(0xFFFF8000 & a)) { + zeros = 16; + } else { + zeros = 0; + } + if (!(0xFF800000 & (a << zeros))) zeros += 8; + if (!(0xF8000000 & (a << zeros))) zeros += 4; + if (!(0xE0000000 & (a << zeros))) zeros += 2; + if (!(0xC0000000 & (a << zeros))) zeros += 1; + + return zeros; +} + +static __inline int WebRtcSpl_NormU32(WebRtc_UWord32 a) { + int zeros; + + if (a == 0) return 0; + + if (!(0xFFFF0000 & a)) { + zeros = 16; + } else { + zeros = 0; + } + if (!(0xFF000000 & (a << zeros))) zeros += 8; + if (!(0xF0000000 & (a << zeros))) zeros += 4; + if (!(0xC0000000 & (a << zeros))) zeros += 2; + if (!(0x80000000 & (a << zeros))) zeros += 1; + + return zeros; +} + +static __inline int WebRtcSpl_NormW16(WebRtc_Word16 a) { + int zeros; + + if (a <= 0) a ^= 0xFFFF; + + if (!(0xFF80 & a)) { + zeros = 8; + } else { + zeros = 0; + } + if (!(0xF800 & (a << zeros))) zeros += 4; + if (!(0xE000 & (a << zeros))) zeros += 2; + if (!(0xC000 & (a << zeros))) zeros += 1; + + return zeros; +} + +static __inline int32_t WebRtc_MulAccumW16(int16_t a, + int16_t b, + int32_t c) { + return (a * b + c); +} + +#endif // WEBRTC_ARCH_ARM_V7A + +#endif // WEBRTC_SPL_SPL_INL_H_ diff --git a/src/mod/codecs/mod_iSAC/spl_inl_armv7.h b/src/mod/codecs/mod_iSAC/spl_inl_armv7.h new file mode 100644 index 0000000000..689c2baeea --- /dev/null +++ b/src/mod/codecs/mod_iSAC/spl_inl_armv7.h @@ -0,0 +1,137 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + + +// This header file includes the inline functions for ARM processors in +// the fix point signal processing library. + +#ifndef WEBRTC_SPL_SPL_INL_ARMV7_H_ +#define WEBRTC_SPL_SPL_INL_ARMV7_H_ + +static __inline WebRtc_Word32 WEBRTC_SPL_MUL_16_32_RSFT16(WebRtc_Word16 a, + WebRtc_Word32 b) { + WebRtc_Word32 tmp; + __asm__("smulwb %0, %1, %2":"=r"(tmp):"r"(b), "r"(a)); + return tmp; +} + +static __inline WebRtc_Word32 WEBRTC_SPL_MUL_32_32_RSFT32(WebRtc_Word16 a, + WebRtc_Word16 b, + WebRtc_Word32 c) { + WebRtc_Word32 tmp; + __asm__("pkhbt %0, %1, %2, lsl #16" : "=r"(tmp) : "r"(b), "r"(a)); + __asm__("smmul %0, %1, %2":"=r"(tmp):"r"(tmp), "r"(c)); + return tmp; +} + +static __inline WebRtc_Word32 WEBRTC_SPL_MUL_32_32_RSFT32BI(WebRtc_Word32 a, + WebRtc_Word32 b) { + WebRtc_Word32 tmp; + __asm__("smmul %0, %1, %2":"=r"(tmp):"r"(a), "r"(b)); + return tmp; +} + +static __inline WebRtc_Word32 WEBRTC_SPL_MUL_16_16(WebRtc_Word16 a, + WebRtc_Word16 b) { + WebRtc_Word32 tmp; + __asm__("smulbb %0, %1, %2":"=r"(tmp):"r"(a), "r"(b)); + return tmp; +} + +static __inline int32_t WebRtc_MulAccumW16(int16_t a, + int16_t b, + int32_t c) { + int32_t tmp = 0; + __asm__("smlabb %0, %1, %2, %3":"=r"(tmp):"r"(a), "r"(b), "r"(c)); + return tmp; +} + +static __inline WebRtc_Word16 WebRtcSpl_AddSatW16(WebRtc_Word16 a, + WebRtc_Word16 b) { + WebRtc_Word32 s_sum; + + __asm__("qadd16 %0, %1, %2":"=r"(s_sum):"r"(a), "r"(b)); + + return (WebRtc_Word16) s_sum; +} + +static __inline WebRtc_Word32 WebRtcSpl_AddSatW32(WebRtc_Word32 l_var1, + WebRtc_Word32 l_var2) { + WebRtc_Word32 l_sum; + + __asm__("qadd %0, %1, %2":"=r"(l_sum):"r"(l_var1), "r"(l_var2)); + + return l_sum; +} + +static __inline WebRtc_Word16 WebRtcSpl_SubSatW16(WebRtc_Word16 var1, + WebRtc_Word16 var2) { + WebRtc_Word32 s_sub; + + __asm__("qsub16 %0, %1, %2":"=r"(s_sub):"r"(var1), "r"(var2)); + + return (WebRtc_Word16)s_sub; +} + +static __inline WebRtc_Word32 WebRtcSpl_SubSatW32(WebRtc_Word32 l_var1, + WebRtc_Word32 l_var2) { + WebRtc_Word32 l_sub; + + __asm__("qsub %0, %1, %2":"=r"(l_sub):"r"(l_var1), "r"(l_var2)); + + return l_sub; +} + +static __inline WebRtc_Word16 WebRtcSpl_GetSizeInBits(WebRtc_UWord32 n) { + WebRtc_Word32 tmp; + + __asm__("clz %0, %1":"=r"(tmp):"r"(n)); + + return (WebRtc_Word16)(32 - tmp); +} + +static __inline int WebRtcSpl_NormW32(WebRtc_Word32 a) { + WebRtc_Word32 tmp; + + if (a <= 0) a ^= 0xFFFFFFFF; + + __asm__("clz %0, %1":"=r"(tmp):"r"(a)); + + return tmp - 1; +} + +static __inline int WebRtcSpl_NormU32(WebRtc_UWord32 a) { + int tmp; + + if (a == 0) return 0; + + __asm__("clz %0, %1":"=r"(tmp):"r"(a)); + + return tmp; +} + +static __inline int WebRtcSpl_NormW16(WebRtc_Word16 a) { + WebRtc_Word32 tmp; + + if (a <= 0) a ^= 0xFFFFFFFF; + + __asm__("clz %0, %1":"=r"(tmp):"r"(a)); + + return tmp - 17; +} + +static __inline WebRtc_Word16 WebRtcSpl_SatW32ToW16(WebRtc_Word32 value32) { + WebRtc_Word16 out16; + + __asm__("ssat %r0, #16, %r1" : "=r"(out16) : "r"(value32)); + + return out16; +} +#endif // WEBRTC_SPL_SPL_INL_ARMV7_H_ diff --git a/src/mod/codecs/mod_iSAC/spl_sqrt.c b/src/mod/codecs/mod_iSAC/spl_sqrt.c new file mode 100644 index 0000000000..cfe2cd3f34 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/spl_sqrt.c @@ -0,0 +1,184 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + + +/* + * This file contains the function WebRtcSpl_Sqrt(). + * The description header can be found in signal_processing_library.h + * + */ + +#include "signal_processing_library.h" + +WebRtc_Word32 WebRtcSpl_SqrtLocal(WebRtc_Word32 in); + +WebRtc_Word32 WebRtcSpl_SqrtLocal(WebRtc_Word32 in) +{ + + WebRtc_Word16 x_half, t16; + WebRtc_Word32 A, B, x2; + + /* The following block performs: + y=in/2 + x=y-2^30 + x_half=x/2^31 + t = 1 + (x_half) - 0.5*((x_half)^2) + 0.5*((x_half)^3) - 0.625*((x_half)^4) + + 0.875*((x_half)^5) + */ + + B = in; + + B = WEBRTC_SPL_RSHIFT_W32(B, 1); // B = in/2 + B = B - ((WebRtc_Word32)0x40000000); // B = in/2 - 1/2 + x_half = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32(B, 16);// x_half = x/2 = (in-1)/2 + B = B + ((WebRtc_Word32)0x40000000); // B = 1 + x/2 + B = B + ((WebRtc_Word32)0x40000000); // Add 0.5 twice (since 1.0 does not exist in Q31) + + x2 = ((WebRtc_Word32)x_half) * ((WebRtc_Word32)x_half) * 2; // A = (x/2)^2 + A = -x2; // A = -(x/2)^2 + B = B + (A >> 1); // B = 1 + x/2 - 0.5*(x/2)^2 + + A = WEBRTC_SPL_RSHIFT_W32(A, 16); + A = A * A * 2; // A = (x/2)^4 + t16 = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32(A, 16); + B = B + WEBRTC_SPL_MUL_16_16(-20480, t16) * 2; // B = B - 0.625*A + // After this, B = 1 + x/2 - 0.5*(x/2)^2 - 0.625*(x/2)^4 + + t16 = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32(A, 16); + A = WEBRTC_SPL_MUL_16_16(x_half, t16) * 2; // A = (x/2)^5 + t16 = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32(A, 16); + B = B + WEBRTC_SPL_MUL_16_16(28672, t16) * 2; // B = B + 0.875*A + // After this, B = 1 + x/2 - 0.5*(x/2)^2 - 0.625*(x/2)^4 + 0.875*(x/2)^5 + + t16 = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32(x2, 16); + A = WEBRTC_SPL_MUL_16_16(x_half, t16) * 2; // A = x/2^3 + + B = B + (A >> 1); // B = B + 0.5*A + // After this, B = 1 + x/2 - 0.5*(x/2)^2 + 0.5*(x/2)^3 - 0.625*(x/2)^4 + 0.875*(x/2)^5 + + B = B + ((WebRtc_Word32)32768); // Round off bit + + return B; +} + +WebRtc_Word32 WebRtcSpl_Sqrt(WebRtc_Word32 value) +{ + /* + Algorithm: + + Six term Taylor Series is used here to compute the square root of a number + y^0.5 = (1+x)^0.5 where x = y-1 + = 1+(x/2)-0.5*((x/2)^2+0.5*((x/2)^3-0.625*((x/2)^4+0.875*((x/2)^5) + 0.5 <= x < 1 + + Example of how the algorithm works, with ut=sqrt(in), and + with in=73632 and ut=271 (even shift value case): + + in=73632 + y= in/131072 + x=y-1 + t = 1 + (x/2) - 0.5*((x/2)^2) + 0.5*((x/2)^3) - 0.625*((x/2)^4) + 0.875*((x/2)^5) + ut=t*(1/sqrt(2))*512 + + or: + + in=73632 + in2=73632*2^14 + y= in2/2^31 + x=y-1 + t = 1 + (x/2) - 0.5*((x/2)^2) + 0.5*((x/2)^3) - 0.625*((x/2)^4) + 0.875*((x/2)^5) + ut=t*(1/sqrt(2)) + ut2=ut*2^9 + + which gives: + + in = 73632 + in2 = 1206386688 + y = 0.56176757812500 + x = -0.43823242187500 + t = 0.74973506527313 + ut = 0.53014274874797 + ut2 = 2.714330873589594e+002 + + or: + + in=73632 + in2=73632*2^14 + y=in2/2 + x=y-2^30 + x_half=x/2^31 + t = 1 + (x_half) - 0.5*((x_half)^2) + 0.5*((x_half)^3) - 0.625*((x_half)^4) + + 0.875*((x_half)^5) + ut=t*(1/sqrt(2)) + ut2=ut*2^9 + + which gives: + + in = 73632 + in2 = 1206386688 + y = 603193344 + x = -470548480 + x_half = -0.21911621093750 + t = 0.74973506527313 + ut = 0.53014274874797 + ut2 = 2.714330873589594e+002 + + */ + + WebRtc_Word16 x_norm, nshift, t16, sh; + WebRtc_Word32 A; + + WebRtc_Word16 k_sqrt_2 = 23170; // 1/sqrt2 (==5a82) + + A = value; + + if (A == 0) + return (WebRtc_Word32)0; // sqrt(0) = 0 + + sh = WebRtcSpl_NormW32(A); // # shifts to normalize A + A = WEBRTC_SPL_LSHIFT_W32(A, sh); // Normalize A + if (A < (WEBRTC_SPL_WORD32_MAX - 32767)) + { + A = A + ((WebRtc_Word32)32768); // Round off bit + } else + { + A = WEBRTC_SPL_WORD32_MAX; + } + + x_norm = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32(A, 16); // x_norm = AH + + nshift = WEBRTC_SPL_RSHIFT_W16(sh, 1); // nshift = sh>>1 + nshift = -nshift; // Negate the power for later de-normalization + + A = (WebRtc_Word32)WEBRTC_SPL_LSHIFT_W32((WebRtc_Word32)x_norm, 16); + A = WEBRTC_SPL_ABS_W32(A); // A = abs(x_norm<<16) + A = WebRtcSpl_SqrtLocal(A); // A = sqrt(A) + + if ((-2 * nshift) == sh) + { // Even shift value case + + t16 = (WebRtc_Word16)WEBRTC_SPL_RSHIFT_W32(A, 16); // t16 = AH + + A = WEBRTC_SPL_MUL_16_16(k_sqrt_2, t16) * 2; // A = 1/sqrt(2)*t16 + A = A + ((WebRtc_Word32)32768); // Round off + A = A & ((WebRtc_Word32)0x7fff0000); // Round off + + A = WEBRTC_SPL_RSHIFT_W32(A, 15); // A = A>>16 + + } else + { + A = WEBRTC_SPL_RSHIFT_W32(A, 16); // A = A>>16 + } + + A = A & ((WebRtc_Word32)0x0000ffff); + A = (WebRtc_Word32)WEBRTC_SPL_SHIFT_W32(A, nshift); // De-normalize the result + + return A; +} diff --git a/src/mod/codecs/mod_iSAC/spl_sqrt_floor.c b/src/mod/codecs/mod_iSAC/spl_sqrt_floor.c new file mode 100644 index 0000000000..aa36459ec4 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/spl_sqrt_floor.c @@ -0,0 +1,53 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * This file contains the function WebRtcSpl_SqrtFloor(). + * The description header can be found in signal_processing_library.h + * + */ + +#include "signal_processing_library.h" + +#define WEBRTC_SPL_SQRT_ITER(N) \ + try1 = root + (1 << (N)); \ + if (value >= try1 << (N)) \ + { \ + value -= try1 << (N); \ + root |= 2 << (N); \ + } + +// (out) Square root of input parameter +WebRtc_Word32 WebRtcSpl_SqrtFloor(WebRtc_Word32 value) +{ + // new routine for performance, 4 cycles/bit in ARM + // output precision is 16 bits + + WebRtc_Word32 root = 0, try1; + + WEBRTC_SPL_SQRT_ITER (15); + WEBRTC_SPL_SQRT_ITER (14); + WEBRTC_SPL_SQRT_ITER (13); + WEBRTC_SPL_SQRT_ITER (12); + WEBRTC_SPL_SQRT_ITER (11); + WEBRTC_SPL_SQRT_ITER (10); + WEBRTC_SPL_SQRT_ITER ( 9); + WEBRTC_SPL_SQRT_ITER ( 8); + WEBRTC_SPL_SQRT_ITER ( 7); + WEBRTC_SPL_SQRT_ITER ( 6); + WEBRTC_SPL_SQRT_ITER ( 5); + WEBRTC_SPL_SQRT_ITER ( 4); + WEBRTC_SPL_SQRT_ITER ( 3); + WEBRTC_SPL_SQRT_ITER ( 2); + WEBRTC_SPL_SQRT_ITER ( 1); + WEBRTC_SPL_SQRT_ITER ( 0); + + return root >> 1; +} diff --git a/src/mod/codecs/mod_iSAC/spl_version.c b/src/mod/codecs/mod_iSAC/spl_version.c new file mode 100644 index 0000000000..936925ea14 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/spl_version.c @@ -0,0 +1,25 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + + +/* + * This file contains the function WebRtcSpl_get_version(). + * The description header can be found in signal_processing_library.h + * + */ + +#include +#include "signal_processing_library.h" + +WebRtc_Word16 WebRtcSpl_get_version(char* version, WebRtc_Word16 length_in_bytes) +{ + strncpy(version, "1.2.0", length_in_bytes); + return 0; +} diff --git a/src/mod/codecs/mod_iSAC/splitting_filter.c b/src/mod/codecs/mod_iSAC/splitting_filter.c new file mode 100644 index 0000000000..f1acf675f9 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/splitting_filter.c @@ -0,0 +1,198 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * This file contains the splitting filter functions. + * + */ + +#include "signal_processing_library.h" + +// Number of samples in a low/high-band frame. +enum +{ + kBandFrameLength = 160 +}; + +// QMF filter coefficients in Q16. +static const WebRtc_UWord16 WebRtcSpl_kAllPassFilter1[3] = {6418, 36982, 57261}; +static const WebRtc_UWord16 WebRtcSpl_kAllPassFilter2[3] = {21333, 49062, 63010}; + +/////////////////////////////////////////////////////////////////////////////////////////////// +// WebRtcSpl_AllPassQMF(...) +// +// Allpass filter used by the analysis and synthesis parts of the QMF filter. +// +// Input: +// - in_data : Input data sequence (Q10) +// - data_length : Length of data sequence (>2) +// - filter_coefficients : Filter coefficients (length 3, Q16) +// +// Input & Output: +// - filter_state : Filter state (length 6, Q10). +// +// Output: +// - out_data : Output data sequence (Q10), length equal to +// |data_length| +// + +void WebRtcSpl_AllPassQMF(WebRtc_Word32* in_data, const WebRtc_Word16 data_length, + WebRtc_Word32* out_data, const WebRtc_UWord16* filter_coefficients, + WebRtc_Word32* filter_state) +{ + // The procedure is to filter the input with three first order all pass filters + // (cascade operations). + // + // a_3 + q^-1 a_2 + q^-1 a_1 + q^-1 + // y[n] = ----------- ----------- ----------- x[n] + // 1 + a_3q^-1 1 + a_2q^-1 1 + a_1q^-1 + // + // The input vector |filter_coefficients| includes these three filter coefficients. + // The filter state contains the in_data state, in_data[-1], followed by + // the out_data state, out_data[-1]. This is repeated for each cascade. + // The first cascade filter will filter the |in_data| and store the output in + // |out_data|. The second will the take the |out_data| as input and make an + // intermediate storage in |in_data|, to save memory. The third, and final, cascade + // filter operation takes the |in_data| (which is the output from the previous cascade + // filter) and store the output in |out_data|. + // Note that the input vector values are changed during the process. + WebRtc_Word16 k; + WebRtc_Word32 diff; + // First all-pass cascade; filter from in_data to out_data. + + // Let y_i[n] indicate the output of cascade filter i (with filter coefficient a_i) at + // vector position n. Then the final output will be y[n] = y_3[n] + + // First loop, use the states stored in memory. + // "diff" should be safe from wrap around since max values are 2^25 + diff = WEBRTC_SPL_SUB_SAT_W32(in_data[0], filter_state[1]); // = (x[0] - y_1[-1]) + // y_1[0] = x[-1] + a_1 * (x[0] - y_1[-1]) + out_data[0] = WEBRTC_SPL_SCALEDIFF32(filter_coefficients[0], diff, filter_state[0]); + + // For the remaining loops, use previous values. + for (k = 1; k < data_length; k++) + { + diff = WEBRTC_SPL_SUB_SAT_W32(in_data[k], out_data[k - 1]); // = (x[n] - y_1[n-1]) + // y_1[n] = x[n-1] + a_1 * (x[n] - y_1[n-1]) + out_data[k] = WEBRTC_SPL_SCALEDIFF32(filter_coefficients[0], diff, in_data[k - 1]); + } + + // Update states. + filter_state[0] = in_data[data_length - 1]; // x[N-1], becomes x[-1] next time + filter_state[1] = out_data[data_length - 1]; // y_1[N-1], becomes y_1[-1] next time + + // Second all-pass cascade; filter from out_data to in_data. + diff = WEBRTC_SPL_SUB_SAT_W32(out_data[0], filter_state[3]); // = (y_1[0] - y_2[-1]) + // y_2[0] = y_1[-1] + a_2 * (y_1[0] - y_2[-1]) + in_data[0] = WEBRTC_SPL_SCALEDIFF32(filter_coefficients[1], diff, filter_state[2]); + for (k = 1; k < data_length; k++) + { + diff = WEBRTC_SPL_SUB_SAT_W32(out_data[k], in_data[k - 1]); // =(y_1[n] - y_2[n-1]) + // y_2[0] = y_1[-1] + a_2 * (y_1[0] - y_2[-1]) + in_data[k] = WEBRTC_SPL_SCALEDIFF32(filter_coefficients[1], diff, out_data[k-1]); + } + + filter_state[2] = out_data[data_length - 1]; // y_1[N-1], becomes y_1[-1] next time + filter_state[3] = in_data[data_length - 1]; // y_2[N-1], becomes y_2[-1] next time + + // Third all-pass cascade; filter from in_data to out_data. + diff = WEBRTC_SPL_SUB_SAT_W32(in_data[0], filter_state[5]); // = (y_2[0] - y[-1]) + // y[0] = y_2[-1] + a_3 * (y_2[0] - y[-1]) + out_data[0] = WEBRTC_SPL_SCALEDIFF32(filter_coefficients[2], diff, filter_state[4]); + for (k = 1; k < data_length; k++) + { + diff = WEBRTC_SPL_SUB_SAT_W32(in_data[k], out_data[k - 1]); // = (y_2[n] - y[n-1]) + // y[n] = y_2[n-1] + a_3 * (y_2[n] - y[n-1]) + out_data[k] = WEBRTC_SPL_SCALEDIFF32(filter_coefficients[2], diff, in_data[k-1]); + } + filter_state[4] = in_data[data_length - 1]; // y_2[N-1], becomes y_2[-1] next time + filter_state[5] = out_data[data_length - 1]; // y[N-1], becomes y[-1] next time +} + +void WebRtcSpl_AnalysisQMF(const WebRtc_Word16* in_data, WebRtc_Word16* low_band, + WebRtc_Word16* high_band, WebRtc_Word32* filter_state1, + WebRtc_Word32* filter_state2) +{ + WebRtc_Word16 i; + WebRtc_Word16 k; + WebRtc_Word32 tmp; + WebRtc_Word32 half_in1[kBandFrameLength]; + WebRtc_Word32 half_in2[kBandFrameLength]; + WebRtc_Word32 filter1[kBandFrameLength]; + WebRtc_Word32 filter2[kBandFrameLength]; + + // Split even and odd samples. Also shift them to Q10. + for (i = 0, k = 0; i < kBandFrameLength; i++, k += 2) + { + half_in2[i] = WEBRTC_SPL_LSHIFT_W32((WebRtc_Word32)in_data[k], 10); + half_in1[i] = WEBRTC_SPL_LSHIFT_W32((WebRtc_Word32)in_data[k + 1], 10); + } + + // All pass filter even and odd samples, independently. + WebRtcSpl_AllPassQMF(half_in1, kBandFrameLength, filter1, WebRtcSpl_kAllPassFilter1, + filter_state1); + WebRtcSpl_AllPassQMF(half_in2, kBandFrameLength, filter2, WebRtcSpl_kAllPassFilter2, + filter_state2); + + // Take the sum and difference of filtered version of odd and even + // branches to get upper & lower band. + for (i = 0; i < kBandFrameLength; i++) + { + tmp = filter1[i] + filter2[i] + 1024; + tmp = WEBRTC_SPL_RSHIFT_W32(tmp, 11); + low_band[i] = WebRtcSpl_SatW32ToW16(tmp); + + tmp = filter1[i] - filter2[i] + 1024; + tmp = WEBRTC_SPL_RSHIFT_W32(tmp, 11); + high_band[i] = WebRtcSpl_SatW32ToW16(tmp); + } +} + +void WebRtcSpl_SynthesisQMF(const WebRtc_Word16* low_band, const WebRtc_Word16* high_band, + WebRtc_Word16* out_data, WebRtc_Word32* filter_state1, + WebRtc_Word32* filter_state2) +{ + WebRtc_Word32 tmp; + WebRtc_Word32 half_in1[kBandFrameLength]; + WebRtc_Word32 half_in2[kBandFrameLength]; + WebRtc_Word32 filter1[kBandFrameLength]; + WebRtc_Word32 filter2[kBandFrameLength]; + WebRtc_Word16 i; + WebRtc_Word16 k; + + // Obtain the sum and difference channels out of upper and lower-band channels. + // Also shift to Q10 domain. + for (i = 0; i < kBandFrameLength; i++) + { + tmp = (WebRtc_Word32)low_band[i] + (WebRtc_Word32)high_band[i]; + half_in1[i] = WEBRTC_SPL_LSHIFT_W32(tmp, 10); + tmp = (WebRtc_Word32)low_band[i] - (WebRtc_Word32)high_band[i]; + half_in2[i] = WEBRTC_SPL_LSHIFT_W32(tmp, 10); + } + + // all-pass filter the sum and difference channels + WebRtcSpl_AllPassQMF(half_in1, kBandFrameLength, filter1, WebRtcSpl_kAllPassFilter2, + filter_state1); + WebRtcSpl_AllPassQMF(half_in2, kBandFrameLength, filter2, WebRtcSpl_kAllPassFilter1, + filter_state2); + + // The filtered signals are even and odd samples of the output. Combine + // them. The signals are Q10 should shift them back to Q0 and take care of + // saturation. + for (i = 0, k = 0; i < kBandFrameLength; i++) + { + tmp = WEBRTC_SPL_RSHIFT_W32(filter2[i] + 512, 10); + out_data[k++] = WebRtcSpl_SatW32ToW16(tmp); + + tmp = WEBRTC_SPL_RSHIFT_W32(filter1[i] + 512, 10); + out_data[k++] = WebRtcSpl_SatW32ToW16(tmp); + } + +} diff --git a/src/mod/codecs/mod_iSAC/sqrt_of_one_minus_x_squared.c b/src/mod/codecs/mod_iSAC/sqrt_of_one_minus_x_squared.c new file mode 100644 index 0000000000..9fb2c73bc5 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/sqrt_of_one_minus_x_squared.c @@ -0,0 +1,35 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + + +/* + * This file contains the function WebRtcSpl_SqrtOfOneMinusXSquared(). + * The description header can be found in signal_processing_library.h + * + */ + +#include "signal_processing_library.h" + +void WebRtcSpl_SqrtOfOneMinusXSquared(WebRtc_Word16 *xQ15, int vector_length, + WebRtc_Word16 *yQ15) +{ + WebRtc_Word32 sq; + int m; + WebRtc_Word16 tmp; + + for (m = 0; m < vector_length; m++) + { + tmp = xQ15[m]; + sq = WEBRTC_SPL_MUL_16_16(tmp, tmp); // x^2 in Q30 + sq = 1073741823 - sq; // 1-x^2, where 1 ~= 0.99999999906 is 1073741823 in Q30 + sq = WebRtcSpl_Sqrt(sq); // sqrt(1-x^2) in Q15 + yQ15[m] = (WebRtc_Word16)sq; + } +} diff --git a/src/mod/codecs/mod_iSAC/structs.h b/src/mod/codecs/mod_iSAC/structs.h new file mode 100644 index 0000000000..7523ad6e4a --- /dev/null +++ b/src/mod/codecs/mod_iSAC/structs.h @@ -0,0 +1,478 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/* + * structs.h + * + * This header file contains all the structs used in the ISAC codec + * + */ + +#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_STRUCTS_H_ +#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_STRUCTS_H_ + + +#include "typedefs.h" +#include "settings.h" +#include "isac.h" + +typedef struct Bitstreamstruct { + + WebRtc_UWord8 stream[STREAM_SIZE_MAX]; + WebRtc_UWord32 W_upper; + WebRtc_UWord32 streamval; + WebRtc_UWord32 stream_index; + +} Bitstr; + +typedef struct { + + double DataBufferLo[WINLEN]; + double DataBufferHi[WINLEN]; + + double CorrBufLo[ORDERLO+1]; + double CorrBufHi[ORDERHI+1]; + + float PreStateLoF[ORDERLO+1]; + float PreStateLoG[ORDERLO+1]; + float PreStateHiF[ORDERHI+1]; + float PreStateHiG[ORDERHI+1]; + float PostStateLoF[ORDERLO+1]; + float PostStateLoG[ORDERLO+1]; + float PostStateHiF[ORDERHI+1]; + float PostStateHiG[ORDERHI+1]; + + double OldEnergy; + +} MaskFiltstr; + + +typedef struct { + + //state vectors for each of the two analysis filters + double INSTAT1[2*(QORDER-1)]; + double INSTAT2[2*(QORDER-1)]; + double INSTATLA1[2*(QORDER-1)]; + double INSTATLA2[2*(QORDER-1)]; + double INLABUF1[QLOOKAHEAD]; + double INLABUF2[QLOOKAHEAD]; + + float INSTAT1_float[2*(QORDER-1)]; + float INSTAT2_float[2*(QORDER-1)]; + float INSTATLA1_float[2*(QORDER-1)]; + float INSTATLA2_float[2*(QORDER-1)]; + float INLABUF1_float[QLOOKAHEAD]; + float INLABUF2_float[QLOOKAHEAD]; + + /* High pass filter */ + double HPstates[HPORDER]; + float HPstates_float[HPORDER]; + +} PreFiltBankstr; + + +typedef struct { + + //state vectors for each of the two analysis filters + double STATE_0_LOWER[2*POSTQORDER]; + double STATE_0_UPPER[2*POSTQORDER]; + + /* High pass filter */ + double HPstates1[HPORDER]; + double HPstates2[HPORDER]; + + float STATE_0_LOWER_float[2*POSTQORDER]; + float STATE_0_UPPER_float[2*POSTQORDER]; + + float HPstates1_float[HPORDER]; + float HPstates2_float[HPORDER]; + +} PostFiltBankstr; + +typedef struct { + + //data buffer for pitch filter + double ubuf[PITCH_BUFFSIZE]; + + //low pass state vector + double ystate[PITCH_DAMPORDER]; + + //old lag and gain + double oldlagp[1]; + double oldgainp[1]; + +} PitchFiltstr; + +typedef struct { + + //data buffer + double buffer[PITCH_WLPCBUFLEN]; + + //state vectors + double istate[PITCH_WLPCORDER]; + double weostate[PITCH_WLPCORDER]; + double whostate[PITCH_WLPCORDER]; + + //LPC window -> should be a global array because constant + double window[PITCH_WLPCWINLEN]; + +} WeightFiltstr; + +typedef struct { + + //for inital estimator + double dec_buffer[PITCH_CORR_LEN2 + PITCH_CORR_STEP2 + + PITCH_MAX_LAG/2 - PITCH_FRAME_LEN/2+2]; + double decimator_state[2*ALLPASSSECTIONS+1]; + double hp_state[2]; + + double whitened_buf[QLOOKAHEAD]; + + double inbuf[QLOOKAHEAD]; + + PitchFiltstr PFstr_wght; + PitchFiltstr PFstr; + WeightFiltstr Wghtstr; + +} PitchAnalysisStruct; + + + +/* Have instance of struct together with other iSAC structs */ +typedef struct { + + /* Previous frame length (in ms) */ + WebRtc_Word32 prev_frame_length; + + /* Previous RTP timestamp from received + packet (in samples relative beginning) */ + WebRtc_Word32 prev_rec_rtp_number; + + /* Send timestamp for previous packet (in ms using timeGetTime()) */ + WebRtc_UWord32 prev_rec_send_ts; + + /* Arrival time for previous packet (in ms using timeGetTime()) */ + WebRtc_UWord32 prev_rec_arr_ts; + + /* rate of previous packet, derived from RTP timestamps (in bits/s) */ + float prev_rec_rtp_rate; + + /* Time sinse the last update of the BN estimate (in ms) */ + WebRtc_UWord32 last_update_ts; + + /* Time sinse the last reduction (in ms) */ + WebRtc_UWord32 last_reduction_ts; + + /* How many times the estimate was update in the beginning */ + WebRtc_Word32 count_tot_updates_rec; + + /* The estimated bottle neck rate from there to here (in bits/s) */ + WebRtc_Word32 rec_bw; + float rec_bw_inv; + float rec_bw_avg; + float rec_bw_avg_Q; + + /* The estimated mean absolute jitter value, + as seen on this side (in ms) */ + float rec_jitter; + float rec_jitter_short_term; + float rec_jitter_short_term_abs; + float rec_max_delay; + float rec_max_delay_avg_Q; + + /* (assumed) bitrate for headers (bps) */ + float rec_header_rate; + + /* The estimated bottle neck rate from here to there (in bits/s) */ + float send_bw_avg; + + /* The estimated mean absolute jitter value, as seen on + the other siee (in ms) */ + float send_max_delay_avg; + + // number of packets received since last update + int num_pkts_rec; + + int num_consec_rec_pkts_over_30k; + + // flag for marking that a high speed network has been + // detected downstream + int hsn_detect_rec; + + int num_consec_snt_pkts_over_30k; + + // flag for marking that a high speed network has + // been detected upstream + int hsn_detect_snd; + + WebRtc_UWord32 start_wait_period; + + int in_wait_period; + + int change_to_WB; + + WebRtc_UWord32 senderTimestamp; + WebRtc_UWord32 receiverTimestamp; + //enum IsacSamplingRate incomingStreamSampFreq; + WebRtc_UWord16 numConsecLatePkts; + float consecLatency; + WebRtc_Word16 inWaitLatePkts; +} BwEstimatorstr; + + +typedef struct { + + /* boolean, flags if previous packet exceeded B.N. */ + int PrevExceed; + /* ms */ + int ExceedAgo; + /* packets left to send in current burst */ + int BurstCounter; + /* packets */ + int InitCounter; + /* ms remaining in buffer when next packet will be sent */ + double StillBuffered; + +} RateModel; + + +typedef struct { + + unsigned int SpaceAlloced; + unsigned int MaxPermAlloced; + double Tmp0[MAXFFTSIZE]; + double Tmp1[MAXFFTSIZE]; + double Tmp2[MAXFFTSIZE]; + double Tmp3[MAXFFTSIZE]; + int Perm[MAXFFTSIZE]; + int factor [NFACTOR]; + +} FFTstr; + + +/* The following strutc is used to store data from encoding, to make it + fast and easy to construct a new bitstream with a different Bandwidth + estimate. All values (except framelength and minBytes) is double size to + handle 60 ms of data. +*/ +typedef struct { + + /* Used to keep track of if it is first or second part of 60 msec packet */ + int startIdx; + + /* Frame length in samples */ + WebRtc_Word16 framelength; + + /* Pitch Gain */ + int pitchGain_index[2]; + + /* Pitch Lag */ + double meanGain[2]; + int pitchIndex[PITCH_SUBFRAMES*2]; + + /* LPC */ + int LPCmodel[2]; + int LPCindex_s[108*2]; /* KLT_ORDER_SHAPE = 108 */ + int LPCindex_g[12*2]; /* KLT_ORDER_GAIN = 12 */ + double LPCcoeffs_lo[(ORDERLO+1)*SUBFRAMES*2]; + double LPCcoeffs_hi[(ORDERHI+1)*SUBFRAMES*2]; + + /* Encode Spec */ + WebRtc_Word16 fre[FRAMESAMPLES]; + WebRtc_Word16 fim[FRAMESAMPLES]; + WebRtc_Word16 AvgPitchGain[2]; + + /* Used in adaptive mode only */ + int minBytes; + +} ISAC_SaveEncData_t; + + +typedef struct { + + int indexLPCShape[UB_LPC_ORDER * UB16_LPC_VEC_PER_FRAME]; + double lpcGain[SUBFRAMES<<1]; + int lpcGainIndex[SUBFRAMES<<1]; + + Bitstr bitStreamObj; + + WebRtc_Word16 realFFT[FRAMESAMPLES_HALF]; + WebRtc_Word16 imagFFT[FRAMESAMPLES_HALF]; +} ISACUBSaveEncDataStruct; + + + +typedef struct { + + Bitstr bitstr_obj; + MaskFiltstr maskfiltstr_obj; + PreFiltBankstr prefiltbankstr_obj; + PitchFiltstr pitchfiltstr_obj; + PitchAnalysisStruct pitchanalysisstr_obj; + FFTstr fftstr_obj; + ISAC_SaveEncData_t SaveEnc_obj; + + int buffer_index; + WebRtc_Word16 current_framesamples; + + float data_buffer_float[FRAMESAMPLES_30ms]; + + int frame_nb; + double bottleneck; + WebRtc_Word16 new_framelength; + double s2nr; + + /* Maximum allowed number of bits for a 30 msec packet */ + WebRtc_Word16 payloadLimitBytes30; + /* Maximum allowed number of bits for a 30 msec packet */ + WebRtc_Word16 payloadLimitBytes60; + /* Maximum allowed number of bits for both 30 and 60 msec packet */ + WebRtc_Word16 maxPayloadBytes; + /* Maximum allowed rate in bytes per 30 msec packet */ + WebRtc_Word16 maxRateInBytes; + + /*--- + If set to 1 iSAC will not addapt the frame-size, if used in + channel-adaptive mode. The initial value will be used for all rates. + ---*/ + WebRtc_Word16 enforceFrameSize; + + /*----- + This records the BWE index the encoder injected into the bit-stream. + It will be used in RCU. The same BWE index of main paylaod will be in + the redundant payload. We can not retrive it from BWE because it is + a recursive procedure (WebRtcIsac_GetDownlinkBwJitIndexImpl) and has to be + called only once per each encode. + -----*/ + WebRtc_Word16 lastBWIdx; +} ISACLBEncStruct; + +typedef struct { + + Bitstr bitstr_obj; + MaskFiltstr maskfiltstr_obj; + PreFiltBankstr prefiltbankstr_obj; + FFTstr fftstr_obj; + ISACUBSaveEncDataStruct SaveEnc_obj; + + int buffer_index; + float data_buffer_float[MAX_FRAMESAMPLES + + LB_TOTAL_DELAY_SAMPLES]; + double bottleneck; + /* Maximum allowed number of bits for a 30 msec packet */ + //WebRtc_Word16 payloadLimitBytes30; + /* Maximum allowed number of bits for both 30 and 60 msec packet */ + //WebRtc_Word16 maxPayloadBytes; + WebRtc_Word16 maxPayloadSizeBytes; + + double lastLPCVec[UB_LPC_ORDER]; + WebRtc_Word16 numBytesUsed; + WebRtc_Word16 lastJitterInfo; +} ISACUBEncStruct; + + + +typedef struct { + + Bitstr bitstr_obj; + MaskFiltstr maskfiltstr_obj; + PostFiltBankstr postfiltbankstr_obj; + PitchFiltstr pitchfiltstr_obj; + FFTstr fftstr_obj; + +} ISACLBDecStruct; + +typedef struct { + + Bitstr bitstr_obj; + MaskFiltstr maskfiltstr_obj; + PostFiltBankstr postfiltbankstr_obj; + FFTstr fftstr_obj; + +} ISACUBDecStruct; + + + +typedef struct { + + ISACLBEncStruct ISACencLB_obj; + ISACLBDecStruct ISACdecLB_obj; +} ISACLBStruct; + + +typedef struct { + + ISACUBEncStruct ISACencUB_obj; + ISACUBDecStruct ISACdecUB_obj; +} ISACUBStruct; + +/* + This struct is used to take a snapshot of the entropy coder and LPC gains + right before encoding LPC gains. This allows us to go back to that state + if we like to limit the payload size. +*/ +typedef struct { + /* 6 lower-band & 6 upper-band */ + double loFiltGain[SUBFRAMES]; + double hiFiltGain[SUBFRAMES]; + /* Upper boundary of interval W */ + WebRtc_UWord32 W_upper; + WebRtc_UWord32 streamval; + /* Index to the current position in bytestream */ + WebRtc_UWord32 stream_index; + WebRtc_UWord8 stream[3]; +} transcode_obj; + + +typedef struct { + // lower-band codec instance + ISACLBStruct instLB; + // upper-band codec instance + ISACUBStruct instUB; + + // Bandwidth Estimator and model for the rate. + BwEstimatorstr bwestimator_obj; + RateModel rate_data_obj; + double MaxDelay; + + /* 0 = adaptive; 1 = instantaneous */ + WebRtc_Word16 codingMode; + + // overall bottleneck of the codec + WebRtc_Word32 bottleneck; + + // QMF Filter state + WebRtc_Word32 analysisFBState1[FB_STATE_SIZE_WORD32]; + WebRtc_Word32 analysisFBState2[FB_STATE_SIZE_WORD32]; + WebRtc_Word32 synthesisFBState1[FB_STATE_SIZE_WORD32]; + WebRtc_Word32 synthesisFBState2[FB_STATE_SIZE_WORD32]; + + // Error Code + WebRtc_Word16 errorCode; + + // bandwidth of the encoded audio 8, 12 or 16 kHz + enum ISACBandwidth bandwidthKHz; + // Sampling rate of audio, encoder and decode, 8 or 16 kHz + enum IsacSamplingRate encoderSamplingRateKHz; + enum IsacSamplingRate decoderSamplingRateKHz; + // Flag to keep track of initializations, lower & upper-band + // encoder and decoder. + WebRtc_Word16 initFlag; + + // Flag to to indicate signal bandwidth switch + WebRtc_Word16 resetFlag_8kHz; + + // Maximum allowed rate, measured in Bytes per 30 ms. + WebRtc_Word16 maxRateBytesPer30Ms; + // Maximum allowed payload-size, measured in Bytes. + WebRtc_Word16 maxPayloadSizeBytes; +} ISACMainStruct; + +#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_STRUCTS_H_ */ diff --git a/src/mod/codecs/mod_iSAC/transform.c b/src/mod/codecs/mod_iSAC/transform.c new file mode 100644 index 0000000000..97b801ac49 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/transform.c @@ -0,0 +1,131 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#include "settings.h" +#include "fft.h" +#include "codec.h" +#include "os_specific_inline.h" +#include + +static double costab1[FRAMESAMPLES_HALF]; +static double sintab1[FRAMESAMPLES_HALF]; +static double costab2[FRAMESAMPLES_QUARTER]; +static double sintab2[FRAMESAMPLES_QUARTER]; + +void WebRtcIsac_InitTransform() +{ + int k; + double fact, phase; + + fact = PI / (FRAMESAMPLES_HALF); + phase = 0.0; + for (k = 0; k < FRAMESAMPLES_HALF; k++) { + costab1[k] = cos(phase); + sintab1[k] = sin(phase); + phase += fact; + } + + fact = PI * ((double) (FRAMESAMPLES_HALF - 1)) / ((double) FRAMESAMPLES_HALF); + phase = 0.5 * fact; + for (k = 0; k < FRAMESAMPLES_QUARTER; k++) { + costab2[k] = cos(phase); + sintab2[k] = sin(phase); + phase += fact; + } +} + + +void WebRtcIsac_Time2Spec(double *inre1, + double *inre2, + WebRtc_Word16 *outreQ7, + WebRtc_Word16 *outimQ7, + FFTstr *fftstr_obj) +{ + + int k; + int dims[1]; + double tmp1r, tmp1i, xr, xi, yr, yi, fact; + double tmpre[FRAMESAMPLES_HALF], tmpim[FRAMESAMPLES_HALF]; + + + dims[0] = FRAMESAMPLES_HALF; + + + /* Multiply with complex exponentials and combine into one complex vector */ + fact = 0.5 / sqrt(FRAMESAMPLES_HALF); + for (k = 0; k < FRAMESAMPLES_HALF; k++) { + tmp1r = costab1[k]; + tmp1i = sintab1[k]; + tmpre[k] = (inre1[k] * tmp1r + inre2[k] * tmp1i) * fact; + tmpim[k] = (inre2[k] * tmp1r - inre1[k] * tmp1i) * fact; + } + + + /* Get DFT */ + WebRtcIsac_Fftns(1, dims, tmpre, tmpim, -1, 1.0, fftstr_obj); + + /* Use symmetry to separate into two complex vectors and center frames in time around zero */ + for (k = 0; k < FRAMESAMPLES_QUARTER; k++) { + xr = tmpre[k] + tmpre[FRAMESAMPLES_HALF - 1 - k]; + yi = -tmpre[k] + tmpre[FRAMESAMPLES_HALF - 1 - k]; + xi = tmpim[k] - tmpim[FRAMESAMPLES_HALF - 1 - k]; + yr = tmpim[k] + tmpim[FRAMESAMPLES_HALF - 1 - k]; + + tmp1r = costab2[k]; + tmp1i = sintab2[k]; + outreQ7[k] = (WebRtc_Word16)WebRtcIsac_lrint((xr * tmp1r - xi * tmp1i) * 128.0); + outimQ7[k] = (WebRtc_Word16)WebRtcIsac_lrint((xr * tmp1i + xi * tmp1r) * 128.0); + outreQ7[FRAMESAMPLES_HALF - 1 - k] = (WebRtc_Word16)WebRtcIsac_lrint((-yr * tmp1i - yi * tmp1r) * 128.0); + outimQ7[FRAMESAMPLES_HALF - 1 - k] = (WebRtc_Word16)WebRtcIsac_lrint((-yr * tmp1r + yi * tmp1i) * 128.0); + } +} + + +void WebRtcIsac_Spec2time(double *inre, double *inim, double *outre1, double *outre2, FFTstr *fftstr_obj) +{ + + int k; + double tmp1r, tmp1i, xr, xi, yr, yi, fact; + + int dims; + + dims = FRAMESAMPLES_HALF; + + for (k = 0; k < FRAMESAMPLES_QUARTER; k++) { + /* Move zero in time to beginning of frames */ + tmp1r = costab2[k]; + tmp1i = sintab2[k]; + xr = inre[k] * tmp1r + inim[k] * tmp1i; + xi = inim[k] * tmp1r - inre[k] * tmp1i; + yr = -inim[FRAMESAMPLES_HALF - 1 - k] * tmp1r - inre[FRAMESAMPLES_HALF - 1 - k] * tmp1i; + yi = -inre[FRAMESAMPLES_HALF - 1 - k] * tmp1r + inim[FRAMESAMPLES_HALF - 1 - k] * tmp1i; + + /* Combine into one vector, z = x + j * y */ + outre1[k] = xr - yi; + outre1[FRAMESAMPLES_HALF - 1 - k] = xr + yi; + outre2[k] = xi + yr; + outre2[FRAMESAMPLES_HALF - 1 - k] = -xi + yr; + } + + + /* Get IDFT */ + WebRtcIsac_Fftns(1, &dims, outre1, outre2, 1, FRAMESAMPLES_HALF, fftstr_obj); + + + /* Demodulate and separate */ + fact = sqrt(FRAMESAMPLES_HALF); + for (k = 0; k < FRAMESAMPLES_HALF; k++) { + tmp1r = costab1[k]; + tmp1i = sintab1[k]; + xr = (outre1[k] * tmp1r - outre2[k] * tmp1i) * fact; + outre2[k] = (outre2[k] * tmp1r + outre1[k] * tmp1i) * fact; + outre1[k] = xr; + } +} diff --git a/src/mod/codecs/mod_iSAC/typedefs.h b/src/mod/codecs/mod_iSAC/typedefs.h new file mode 100644 index 0000000000..ba87309638 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/typedefs.h @@ -0,0 +1,142 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +// This file contains platform-specific typedefs and defines. + +#ifndef WEBRTC_TYPEDEFS_H_ +#define WEBRTC_TYPEDEFS_H_ + +// Reserved words definitions +// TODO(andrew): Look at removing these. +#define WEBRTC_EXTERN extern +#define G_CONST const +#define WEBRTC_INLINE extern __inline + +// Define WebRTC preprocessor identifiers based on the current build platform. +// TODO(andrew): Clean these up. We can probably remove everything in this +// block. +// - TARGET_MAC_INTEL and TARGET_MAC aren't used anywhere. +// - In the few places where TARGET_PC is used, it should be replaced by +// something more specific. +// - Do we really support PowerPC? Probably not. Remove WEBRTC_MAC_INTEL +// from build/common.gypi as well. +#if defined(WIN32) + // Windows & Windows Mobile. + #if !defined(WEBRTC_TARGET_PC) + #define WEBRTC_TARGET_PC + #endif +#elif defined(__APPLE__) + // Mac OS X. + #if defined(__LITTLE_ENDIAN__ ) + #if !defined(WEBRTC_TARGET_MAC_INTEL) + #define WEBRTC_TARGET_MAC_INTEL + #endif + #else + #if !defined(WEBRTC_TARGET_MAC) + #define WEBRTC_TARGET_MAC + #endif + #endif +#else + // Linux etc. + #if !defined(WEBRTC_TARGET_PC) + #define WEBRTC_TARGET_PC + #endif +#endif + +// Derived from Chromium's build/build_config.h +// Processor architecture detection. For more info on what's defined, see: +// http://msdn.microsoft.com/en-us/library/b0084kay.aspx +// http://www.agner.org/optimize/calling_conventions.pdf +// or with gcc, run: "echo | gcc -E -dM -" +// TODO(andrew): replace WEBRTC_LITTLE_ENDIAN with WEBRTC_ARCH_LITTLE_ENDIAN? +#if defined(_M_X64) || defined(__x86_64__) +#define WEBRTC_ARCH_X86_FAMILY +#define WEBRTC_ARCH_X86_64 +#define WEBRTC_ARCH_64_BITS +#define WEBRTC_ARCH_LITTLE_ENDIAN +#elif defined(_M_IX86) || defined(__i386__) +#define WEBRTC_ARCH_X86_FAMILY +#define WEBRTC_ARCH_X86 +#define WEBRTC_ARCH_32_BITS +#define WEBRTC_ARCH_LITTLE_ENDIAN +#elif defined(__ARMEL__) +// TODO(andrew): We'd prefer to control platform defines here, but this is +// currently provided by the Android makefiles. Commented to avoid duplicate +// definition warnings. +//#define WEBRTC_ARCH_ARM +// TODO(andrew): Chromium uses the following two defines. Should we switch? +//#define WEBRTC_ARCH_ARM_FAMILY +//#define WEBRTC_ARCH_ARMEL +#define WEBRTC_ARCH_32_BITS +#define WEBRTC_ARCH_LITTLE_ENDIAN +#else +#error Please add support for your architecture in typedefs.h +#endif + +#if defined(__SSE2__) || defined(_MSC_VER) +#define WEBRTC_USE_SSE2 +#endif + +#if defined(WEBRTC_TARGET_PC) + +#if !defined(_MSC_VER) + #include +#else + // Define C99 equivalent types. + // Since MSVC doesn't include these headers, we have to write our own + // version to provide a compatibility layer between MSVC and the WebRTC + // headers. + typedef signed char int8_t; + typedef signed short int16_t; + typedef signed int int32_t; + typedef signed long long int64_t; + typedef unsigned char uint8_t; + typedef unsigned short uint16_t; + typedef unsigned int uint32_t; + typedef unsigned long long uint64_t; +#endif + +#if defined(WIN32) + typedef __int64 WebRtc_Word64; + typedef unsigned __int64 WebRtc_UWord64; +#else + typedef int64_t WebRtc_Word64; + typedef uint64_t WebRtc_UWord64; +#endif + typedef int32_t WebRtc_Word32; + typedef uint32_t WebRtc_UWord32; + typedef int16_t WebRtc_Word16; + typedef uint16_t WebRtc_UWord16; + typedef char WebRtc_Word8; + typedef uint8_t WebRtc_UWord8; + + // Define endian for the platform + #define WEBRTC_LITTLE_ENDIAN + +#elif defined(WEBRTC_TARGET_MAC_INTEL) + #include + + typedef int64_t WebRtc_Word64; + typedef uint64_t WebRtc_UWord64; + typedef int32_t WebRtc_Word32; + typedef uint32_t WebRtc_UWord32; + typedef int16_t WebRtc_Word16; + typedef char WebRtc_Word8; + typedef uint16_t WebRtc_UWord16; + typedef uint8_t WebRtc_UWord8; + + // Define endian for the platform + #define WEBRTC_LITTLE_ENDIAN + +#else + #error "No platform defined for WebRTC type definitions (typedefs.h)" +#endif + +#endif // WEBRTC_TYPEDEFS_H_ diff --git a/src/mod/codecs/mod_iSAC/vector_scaling_operations.c b/src/mod/codecs/mod_iSAC/vector_scaling_operations.c new file mode 100644 index 0000000000..20d239cabe --- /dev/null +++ b/src/mod/codecs/mod_iSAC/vector_scaling_operations.c @@ -0,0 +1,151 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + + +/* + * This file contains implementations of the functions + * WebRtcSpl_VectorBitShiftW16() + * WebRtcSpl_VectorBitShiftW32() + * WebRtcSpl_VectorBitShiftW32ToW16() + * WebRtcSpl_ScaleVector() + * WebRtcSpl_ScaleVectorWithSat() + * WebRtcSpl_ScaleAndAddVectors() + * + * The description header can be found in signal_processing_library.h + * + */ + +#include "signal_processing_library.h" + +void WebRtcSpl_VectorBitShiftW16(WebRtc_Word16 *res, + WebRtc_Word16 length, + G_CONST WebRtc_Word16 *in, + WebRtc_Word16 right_shifts) +{ + int i; + + if (right_shifts > 0) + { + for (i = length; i > 0; i--) + { + (*res++) = ((*in++) >> right_shifts); + } + } else + { + for (i = length; i > 0; i--) + { + (*res++) = ((*in++) << (-right_shifts)); + } + } +} + +void WebRtcSpl_VectorBitShiftW32(WebRtc_Word32 *out_vector, + WebRtc_Word16 vector_length, + G_CONST WebRtc_Word32 *in_vector, + WebRtc_Word16 right_shifts) +{ + int i; + + if (right_shifts > 0) + { + for (i = vector_length; i > 0; i--) + { + (*out_vector++) = ((*in_vector++) >> right_shifts); + } + } else + { + for (i = vector_length; i > 0; i--) + { + (*out_vector++) = ((*in_vector++) << (-right_shifts)); + } + } +} + +void WebRtcSpl_VectorBitShiftW32ToW16(WebRtc_Word16 *res, + WebRtc_Word16 length, + G_CONST WebRtc_Word32 *in, + WebRtc_Word16 right_shifts) +{ + int i; + + if (right_shifts >= 0) + { + for (i = length; i > 0; i--) + { + (*res++) = (WebRtc_Word16)((*in++) >> right_shifts); + } + } else + { + WebRtc_Word16 left_shifts = -right_shifts; + for (i = length; i > 0; i--) + { + (*res++) = (WebRtc_Word16)((*in++) << left_shifts); + } + } +} + +void WebRtcSpl_ScaleVector(G_CONST WebRtc_Word16 *in_vector, WebRtc_Word16 *out_vector, + WebRtc_Word16 gain, WebRtc_Word16 in_vector_length, + WebRtc_Word16 right_shifts) +{ + // Performs vector operation: out_vector = (gain*in_vector)>>right_shifts + int i; + G_CONST WebRtc_Word16 *inptr; + WebRtc_Word16 *outptr; + + inptr = in_vector; + outptr = out_vector; + + for (i = 0; i < in_vector_length; i++) + { + (*outptr++) = (WebRtc_Word16)WEBRTC_SPL_MUL_16_16_RSFT(*inptr++, gain, right_shifts); + } +} + +void WebRtcSpl_ScaleVectorWithSat(G_CONST WebRtc_Word16 *in_vector, WebRtc_Word16 *out_vector, + WebRtc_Word16 gain, WebRtc_Word16 in_vector_length, + WebRtc_Word16 right_shifts) +{ + // Performs vector operation: out_vector = (gain*in_vector)>>right_shifts + int i; + WebRtc_Word32 tmpW32; + G_CONST WebRtc_Word16 *inptr; + WebRtc_Word16 *outptr; + + inptr = in_vector; + outptr = out_vector; + + for (i = 0; i < in_vector_length; i++) + { + tmpW32 = WEBRTC_SPL_MUL_16_16_RSFT(*inptr++, gain, right_shifts); + (*outptr++) = WebRtcSpl_SatW32ToW16(tmpW32); + } +} + +void WebRtcSpl_ScaleAndAddVectors(G_CONST WebRtc_Word16 *in1, WebRtc_Word16 gain1, int shift1, + G_CONST WebRtc_Word16 *in2, WebRtc_Word16 gain2, int shift2, + WebRtc_Word16 *out, int vector_length) +{ + // Performs vector operation: out = (gain1*in1)>>shift1 + (gain2*in2)>>shift2 + int i; + G_CONST WebRtc_Word16 *in1ptr; + G_CONST WebRtc_Word16 *in2ptr; + WebRtc_Word16 *outptr; + + in1ptr = in1; + in2ptr = in2; + outptr = out; + + for (i = 0; i < vector_length; i++) + { + (*outptr++) = (WebRtc_Word16)WEBRTC_SPL_MUL_16_16_RSFT(gain1, *in1ptr++, shift1) + + (WebRtc_Word16)WEBRTC_SPL_MUL_16_16_RSFT(gain2, *in2ptr++, shift2); + } +} diff --git a/src/mod/codecs/mod_iSAC/webrtc_fft_t_1024_8.c b/src/mod/codecs/mod_iSAC/webrtc_fft_t_1024_8.c new file mode 100644 index 0000000000..b587380523 --- /dev/null +++ b/src/mod/codecs/mod_iSAC/webrtc_fft_t_1024_8.c @@ -0,0 +1,704 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + + +/* + * This file contains the Q14 radix-8 tables used in ARM9e optimizations. + * + */ + +extern const int s_Q14S_8; +const int s_Q14S_8 = 1024; +extern const unsigned short t_Q14S_8[2032]; +const unsigned short t_Q14S_8[2032] = { + 0x4000,0x0000 ,0x4000,0x0000 ,0x4000,0x0000 , + 0x22a3,0x187e ,0x3249,0x0c7c ,0x11a8,0x238e , + 0x0000,0x2d41 ,0x22a3,0x187e ,0xdd5d,0x3b21 , + 0xdd5d,0x3b21 ,0x11a8,0x238e ,0xb4be,0x3ec5 , + 0xc000,0x4000 ,0x0000,0x2d41 ,0xa57e,0x2d41 , + 0xac61,0x3b21 ,0xee58,0x3537 ,0xb4be,0x0c7c , + 0xa57e,0x2d41 ,0xdd5d,0x3b21 ,0xdd5d,0xe782 , + 0xac61,0x187e ,0xcdb7,0x3ec5 ,0x11a8,0xcac9 , + 0x4000,0x0000 ,0x4000,0x0000 ,0x4000,0x0000 , + 0x396b,0x0646 ,0x3cc8,0x0324 ,0x35eb,0x0964 , + 0x3249,0x0c7c ,0x396b,0x0646 ,0x2aaa,0x1294 , + 0x2aaa,0x1294 ,0x35eb,0x0964 ,0x1e7e,0x1b5d , + 0x22a3,0x187e ,0x3249,0x0c7c ,0x11a8,0x238e , + 0x1a46,0x1e2b ,0x2e88,0x0f8d ,0x0471,0x2afb , + 0x11a8,0x238e ,0x2aaa,0x1294 ,0xf721,0x3179 , + 0x08df,0x289a ,0x26b3,0x1590 ,0xea02,0x36e5 , + 0x0000,0x2d41 ,0x22a3,0x187e ,0xdd5d,0x3b21 , + 0xf721,0x3179 ,0x1e7e,0x1b5d ,0xd178,0x3e15 , + 0xee58,0x3537 ,0x1a46,0x1e2b ,0xc695,0x3fb1 , + 0xe5ba,0x3871 ,0x15fe,0x20e7 ,0xbcf0,0x3fec , + 0xdd5d,0x3b21 ,0x11a8,0x238e ,0xb4be,0x3ec5 , + 0xd556,0x3d3f ,0x0d48,0x2620 ,0xae2e,0x3c42 , + 0xcdb7,0x3ec5 ,0x08df,0x289a ,0xa963,0x3871 , + 0xc695,0x3fb1 ,0x0471,0x2afb ,0xa678,0x3368 , + 0xc000,0x4000 ,0x0000,0x2d41 ,0xa57e,0x2d41 , + 0xba09,0x3fb1 ,0xfb8f,0x2f6c ,0xa678,0x2620 , + 0xb4be,0x3ec5 ,0xf721,0x3179 ,0xa963,0x1e2b , + 0xb02d,0x3d3f ,0xf2b8,0x3368 ,0xae2e,0x1590 , + 0xac61,0x3b21 ,0xee58,0x3537 ,0xb4be,0x0c7c , + 0xa963,0x3871 ,0xea02,0x36e5 ,0xbcf0,0x0324 , + 0xa73b,0x3537 ,0xe5ba,0x3871 ,0xc695,0xf9ba , + 0xa5ed,0x3179 ,0xe182,0x39db ,0xd178,0xf073 , + 0xa57e,0x2d41 ,0xdd5d,0x3b21 ,0xdd5d,0xe782 , + 0xa5ed,0x289a ,0xd94d,0x3c42 ,0xea02,0xdf19 , + 0xa73b,0x238e ,0xd556,0x3d3f ,0xf721,0xd766 , + 0xa963,0x1e2b ,0xd178,0x3e15 ,0x0471,0xd094 , + 0xac61,0x187e ,0xcdb7,0x3ec5 ,0x11a8,0xcac9 , + 0xb02d,0x1294 ,0xca15,0x3f4f ,0x1e7e,0xc625 , + 0xb4be,0x0c7c ,0xc695,0x3fb1 ,0x2aaa,0xc2c1 , + 0xba09,0x0646 ,0xc338,0x3fec ,0x35eb,0xc0b1 , + 0x4000,0x0000 ,0x4000,0x0000 ,0x4000,0x0000 , + 0x3e69,0x0192 ,0x3f36,0x00c9 ,0x3d9a,0x025b , + 0x3cc8,0x0324 ,0x3e69,0x0192 ,0x3b1e,0x04b5 , + 0x3b1e,0x04b5 ,0x3d9a,0x025b ,0x388e,0x070e , + 0x396b,0x0646 ,0x3cc8,0x0324 ,0x35eb,0x0964 , + 0x37af,0x07d6 ,0x3bf4,0x03ed ,0x3334,0x0bb7 , + 0x35eb,0x0964 ,0x3b1e,0x04b5 ,0x306c,0x0e06 , + 0x341e,0x0af1 ,0x3a46,0x057e ,0x2d93,0x1050 , + 0x3249,0x0c7c ,0x396b,0x0646 ,0x2aaa,0x1294 , + 0x306c,0x0e06 ,0x388e,0x070e ,0x27b3,0x14d2 , + 0x2e88,0x0f8d ,0x37af,0x07d6 ,0x24ae,0x1709 , + 0x2c9d,0x1112 ,0x36ce,0x089d ,0x219c,0x1937 , + 0x2aaa,0x1294 ,0x35eb,0x0964 ,0x1e7e,0x1b5d , + 0x28b2,0x1413 ,0x3505,0x0a2b ,0x1b56,0x1d79 , + 0x26b3,0x1590 ,0x341e,0x0af1 ,0x1824,0x1f8c , + 0x24ae,0x1709 ,0x3334,0x0bb7 ,0x14ea,0x2193 , + 0x22a3,0x187e ,0x3249,0x0c7c ,0x11a8,0x238e , + 0x2093,0x19ef ,0x315b,0x0d41 ,0x0e61,0x257e , + 0x1e7e,0x1b5d ,0x306c,0x0e06 ,0x0b14,0x2760 , + 0x1c64,0x1cc6 ,0x2f7b,0x0eca ,0x07c4,0x2935 , + 0x1a46,0x1e2b ,0x2e88,0x0f8d ,0x0471,0x2afb , + 0x1824,0x1f8c ,0x2d93,0x1050 ,0x011c,0x2cb2 , + 0x15fe,0x20e7 ,0x2c9d,0x1112 ,0xfdc7,0x2e5a , + 0x13d5,0x223d ,0x2ba4,0x11d3 ,0xfa73,0x2ff2 , + 0x11a8,0x238e ,0x2aaa,0x1294 ,0xf721,0x3179 , + 0x0f79,0x24da ,0x29af,0x1354 ,0xf3d2,0x32ef , + 0x0d48,0x2620 ,0x28b2,0x1413 ,0xf087,0x3453 , + 0x0b14,0x2760 ,0x27b3,0x14d2 ,0xed41,0x35a5 , + 0x08df,0x289a ,0x26b3,0x1590 ,0xea02,0x36e5 , + 0x06a9,0x29ce ,0x25b1,0x164c ,0xe6cb,0x3812 , + 0x0471,0x2afb ,0x24ae,0x1709 ,0xe39c,0x392b , + 0x0239,0x2c21 ,0x23a9,0x17c4 ,0xe077,0x3a30 , + 0x0000,0x2d41 ,0x22a3,0x187e ,0xdd5d,0x3b21 , + 0xfdc7,0x2e5a ,0x219c,0x1937 ,0xda4f,0x3bfd , + 0xfb8f,0x2f6c ,0x2093,0x19ef ,0xd74e,0x3cc5 , + 0xf957,0x3076 ,0x1f89,0x1aa7 ,0xd45c,0x3d78 , + 0xf721,0x3179 ,0x1e7e,0x1b5d ,0xd178,0x3e15 , + 0xf4ec,0x3274 ,0x1d72,0x1c12 ,0xcea5,0x3e9d , + 0xf2b8,0x3368 ,0x1c64,0x1cc6 ,0xcbe2,0x3f0f , + 0xf087,0x3453 ,0x1b56,0x1d79 ,0xc932,0x3f6b , + 0xee58,0x3537 ,0x1a46,0x1e2b ,0xc695,0x3fb1 , + 0xec2b,0x3612 ,0x1935,0x1edc ,0xc40c,0x3fe1 , + 0xea02,0x36e5 ,0x1824,0x1f8c ,0xc197,0x3ffb , + 0xe7dc,0x37b0 ,0x1711,0x203a ,0xbf38,0x3fff , + 0xe5ba,0x3871 ,0x15fe,0x20e7 ,0xbcf0,0x3fec , + 0xe39c,0x392b ,0x14ea,0x2193 ,0xbabf,0x3fc4 , + 0xe182,0x39db ,0x13d5,0x223d ,0xb8a6,0x3f85 , + 0xdf6d,0x3a82 ,0x12bf,0x22e7 ,0xb6a5,0x3f30 , + 0xdd5d,0x3b21 ,0x11a8,0x238e ,0xb4be,0x3ec5 , + 0xdb52,0x3bb6 ,0x1091,0x2435 ,0xb2f2,0x3e45 , + 0xd94d,0x3c42 ,0x0f79,0x24da ,0xb140,0x3daf , + 0xd74e,0x3cc5 ,0x0e61,0x257e ,0xafa9,0x3d03 , + 0xd556,0x3d3f ,0x0d48,0x2620 ,0xae2e,0x3c42 , + 0xd363,0x3daf ,0x0c2e,0x26c1 ,0xacd0,0x3b6d , + 0xd178,0x3e15 ,0x0b14,0x2760 ,0xab8e,0x3a82 , + 0xcf94,0x3e72 ,0x09fa,0x27fe ,0xaa6a,0x3984 , + 0xcdb7,0x3ec5 ,0x08df,0x289a ,0xa963,0x3871 , + 0xcbe2,0x3f0f ,0x07c4,0x2935 ,0xa87b,0x374b , + 0xca15,0x3f4f ,0x06a9,0x29ce ,0xa7b1,0x3612 , + 0xc851,0x3f85 ,0x058d,0x2a65 ,0xa705,0x34c6 , + 0xc695,0x3fb1 ,0x0471,0x2afb ,0xa678,0x3368 , + 0xc4e2,0x3fd4 ,0x0355,0x2b8f ,0xa60b,0x31f8 , + 0xc338,0x3fec ,0x0239,0x2c21 ,0xa5bc,0x3076 , + 0xc197,0x3ffb ,0x011c,0x2cb2 ,0xa58d,0x2ee4 , + 0xc000,0x4000 ,0x0000,0x2d41 ,0xa57e,0x2d41 , + 0xbe73,0x3ffb ,0xfee4,0x2dcf ,0xa58d,0x2b8f , + 0xbcf0,0x3fec ,0xfdc7,0x2e5a ,0xa5bc,0x29ce , + 0xbb77,0x3fd4 ,0xfcab,0x2ee4 ,0xa60b,0x27fe , + 0xba09,0x3fb1 ,0xfb8f,0x2f6c ,0xa678,0x2620 , + 0xb8a6,0x3f85 ,0xfa73,0x2ff2 ,0xa705,0x2435 , + 0xb74d,0x3f4f ,0xf957,0x3076 ,0xa7b1,0x223d , + 0xb600,0x3f0f ,0xf83c,0x30f9 ,0xa87b,0x203a , + 0xb4be,0x3ec5 ,0xf721,0x3179 ,0xa963,0x1e2b , + 0xb388,0x3e72 ,0xf606,0x31f8 ,0xaa6a,0x1c12 , + 0xb25e,0x3e15 ,0xf4ec,0x3274 ,0xab8e,0x19ef , + 0xb140,0x3daf ,0xf3d2,0x32ef ,0xacd0,0x17c4 , + 0xb02d,0x3d3f ,0xf2b8,0x3368 ,0xae2e,0x1590 , + 0xaf28,0x3cc5 ,0xf19f,0x33df ,0xafa9,0x1354 , + 0xae2e,0x3c42 ,0xf087,0x3453 ,0xb140,0x1112 , + 0xad41,0x3bb6 ,0xef6f,0x34c6 ,0xb2f2,0x0eca , + 0xac61,0x3b21 ,0xee58,0x3537 ,0xb4be,0x0c7c , + 0xab8e,0x3a82 ,0xed41,0x35a5 ,0xb6a5,0x0a2b , + 0xaac8,0x39db ,0xec2b,0x3612 ,0xb8a6,0x07d6 , + 0xaa0f,0x392b ,0xeb16,0x367d ,0xbabf,0x057e , + 0xa963,0x3871 ,0xea02,0x36e5 ,0xbcf0,0x0324 , + 0xa8c5,0x37b0 ,0xe8ef,0x374b ,0xbf38,0x00c9 , + 0xa834,0x36e5 ,0xe7dc,0x37b0 ,0xc197,0xfe6e , + 0xa7b1,0x3612 ,0xe6cb,0x3812 ,0xc40c,0xfc13 , + 0xa73b,0x3537 ,0xe5ba,0x3871 ,0xc695,0xf9ba , + 0xa6d3,0x3453 ,0xe4aa,0x38cf ,0xc932,0xf763 , + 0xa678,0x3368 ,0xe39c,0x392b ,0xcbe2,0xf50f , + 0xa62c,0x3274 ,0xe28e,0x3984 ,0xcea5,0xf2bf , + 0xa5ed,0x3179 ,0xe182,0x39db ,0xd178,0xf073 , + 0xa5bc,0x3076 ,0xe077,0x3a30 ,0xd45c,0xee2d , + 0xa599,0x2f6c ,0xdf6d,0x3a82 ,0xd74e,0xebed , + 0xa585,0x2e5a ,0xde64,0x3ad3 ,0xda4f,0xe9b4 , + 0xa57e,0x2d41 ,0xdd5d,0x3b21 ,0xdd5d,0xe782 , + 0xa585,0x2c21 ,0xdc57,0x3b6d ,0xe077,0xe559 , + 0xa599,0x2afb ,0xdb52,0x3bb6 ,0xe39c,0xe33a , + 0xa5bc,0x29ce ,0xda4f,0x3bfd ,0xe6cb,0xe124 , + 0xa5ed,0x289a ,0xd94d,0x3c42 ,0xea02,0xdf19 , + 0xa62c,0x2760 ,0xd84d,0x3c85 ,0xed41,0xdd19 , + 0xa678,0x2620 ,0xd74e,0x3cc5 ,0xf087,0xdb26 , + 0xa6d3,0x24da ,0xd651,0x3d03 ,0xf3d2,0xd93f , + 0xa73b,0x238e ,0xd556,0x3d3f ,0xf721,0xd766 , + 0xa7b1,0x223d ,0xd45c,0x3d78 ,0xfa73,0xd59b , + 0xa834,0x20e7 ,0xd363,0x3daf ,0xfdc7,0xd3df , + 0xa8c5,0x1f8c ,0xd26d,0x3de3 ,0x011c,0xd231 , + 0xa963,0x1e2b ,0xd178,0x3e15 ,0x0471,0xd094 , + 0xaa0f,0x1cc6 ,0xd085,0x3e45 ,0x07c4,0xcf07 , + 0xaac8,0x1b5d ,0xcf94,0x3e72 ,0x0b14,0xcd8c , + 0xab8e,0x19ef ,0xcea5,0x3e9d ,0x0e61,0xcc21 , + 0xac61,0x187e ,0xcdb7,0x3ec5 ,0x11a8,0xcac9 , + 0xad41,0x1709 ,0xcccc,0x3eeb ,0x14ea,0xc983 , + 0xae2e,0x1590 ,0xcbe2,0x3f0f ,0x1824,0xc850 , + 0xaf28,0x1413 ,0xcafb,0x3f30 ,0x1b56,0xc731 , + 0xb02d,0x1294 ,0xca15,0x3f4f ,0x1e7e,0xc625 , + 0xb140,0x1112 ,0xc932,0x3f6b ,0x219c,0xc52d , + 0xb25e,0x0f8d ,0xc851,0x3f85 ,0x24ae,0xc44a , + 0xb388,0x0e06 ,0xc772,0x3f9c ,0x27b3,0xc37b , + 0xb4be,0x0c7c ,0xc695,0x3fb1 ,0x2aaa,0xc2c1 , + 0xb600,0x0af1 ,0xc5ba,0x3fc4 ,0x2d93,0xc21d , + 0xb74d,0x0964 ,0xc4e2,0x3fd4 ,0x306c,0xc18e , + 0xb8a6,0x07d6 ,0xc40c,0x3fe1 ,0x3334,0xc115 , + 0xba09,0x0646 ,0xc338,0x3fec ,0x35eb,0xc0b1 , + 0xbb77,0x04b5 ,0xc266,0x3ff5 ,0x388e,0xc064 , + 0xbcf0,0x0324 ,0xc197,0x3ffb ,0x3b1e,0xc02c , + 0xbe73,0x0192 ,0xc0ca,0x3fff ,0x3d9a,0xc00b , + 0x4000,0x0000 ,0x3f9b,0x0065 ,0x3f36,0x00c9 , + 0x3ed0,0x012e ,0x3e69,0x0192 ,0x3e02,0x01f7 , + 0x3d9a,0x025b ,0x3d31,0x02c0 ,0x3cc8,0x0324 , + 0x3c5f,0x0388 ,0x3bf4,0x03ed ,0x3b8a,0x0451 , + 0x3b1e,0x04b5 ,0x3ab2,0x051a ,0x3a46,0x057e , + 0x39d9,0x05e2 ,0x396b,0x0646 ,0x38fd,0x06aa , + 0x388e,0x070e ,0x381f,0x0772 ,0x37af,0x07d6 , + 0x373f,0x0839 ,0x36ce,0x089d ,0x365d,0x0901 , + 0x35eb,0x0964 ,0x3578,0x09c7 ,0x3505,0x0a2b , + 0x3492,0x0a8e ,0x341e,0x0af1 ,0x33a9,0x0b54 , + 0x3334,0x0bb7 ,0x32bf,0x0c1a ,0x3249,0x0c7c , + 0x31d2,0x0cdf ,0x315b,0x0d41 ,0x30e4,0x0da4 , + 0x306c,0x0e06 ,0x2ff4,0x0e68 ,0x2f7b,0x0eca , + 0x2f02,0x0f2b ,0x2e88,0x0f8d ,0x2e0e,0x0fee , + 0x2d93,0x1050 ,0x2d18,0x10b1 ,0x2c9d,0x1112 , + 0x2c21,0x1173 ,0x2ba4,0x11d3 ,0x2b28,0x1234 , + 0x2aaa,0x1294 ,0x2a2d,0x12f4 ,0x29af,0x1354 , + 0x2931,0x13b4 ,0x28b2,0x1413 ,0x2833,0x1473 , + 0x27b3,0x14d2 ,0x2733,0x1531 ,0x26b3,0x1590 , + 0x2632,0x15ee ,0x25b1,0x164c ,0x252f,0x16ab , + 0x24ae,0x1709 ,0x242b,0x1766 ,0x23a9,0x17c4 , + 0x2326,0x1821 ,0x22a3,0x187e ,0x221f,0x18db , + 0x219c,0x1937 ,0x2117,0x1993 ,0x2093,0x19ef , + 0x200e,0x1a4b ,0x1f89,0x1aa7 ,0x1f04,0x1b02 , + 0x1e7e,0x1b5d ,0x1df8,0x1bb8 ,0x1d72,0x1c12 , + 0x1ceb,0x1c6c ,0x1c64,0x1cc6 ,0x1bdd,0x1d20 , + 0x1b56,0x1d79 ,0x1ace,0x1dd3 ,0x1a46,0x1e2b , + 0x19be,0x1e84 ,0x1935,0x1edc ,0x18ad,0x1f34 , + 0x1824,0x1f8c ,0x179b,0x1fe3 ,0x1711,0x203a , + 0x1688,0x2091 ,0x15fe,0x20e7 ,0x1574,0x213d , + 0x14ea,0x2193 ,0x145f,0x21e8 ,0x13d5,0x223d , + 0x134a,0x2292 ,0x12bf,0x22e7 ,0x1234,0x233b , + 0x11a8,0x238e ,0x111d,0x23e2 ,0x1091,0x2435 , + 0x1005,0x2488 ,0x0f79,0x24da ,0x0eed,0x252c , + 0x0e61,0x257e ,0x0dd4,0x25cf ,0x0d48,0x2620 , + 0x0cbb,0x2671 ,0x0c2e,0x26c1 ,0x0ba1,0x2711 , + 0x0b14,0x2760 ,0x0a87,0x27af ,0x09fa,0x27fe , + 0x096d,0x284c ,0x08df,0x289a ,0x0852,0x28e7 , + 0x07c4,0x2935 ,0x0736,0x2981 ,0x06a9,0x29ce , + 0x061b,0x2a1a ,0x058d,0x2a65 ,0x04ff,0x2ab0 , + 0x0471,0x2afb ,0x03e3,0x2b45 ,0x0355,0x2b8f , + 0x02c7,0x2bd8 ,0x0239,0x2c21 ,0x01aa,0x2c6a , + 0x011c,0x2cb2 ,0x008e,0x2cfa ,0x0000,0x2d41 , + 0xff72,0x2d88 ,0xfee4,0x2dcf ,0xfe56,0x2e15 , + 0xfdc7,0x2e5a ,0xfd39,0x2e9f ,0xfcab,0x2ee4 , + 0xfc1d,0x2f28 ,0xfb8f,0x2f6c ,0xfb01,0x2faf , + 0xfa73,0x2ff2 ,0xf9e5,0x3034 ,0xf957,0x3076 , + 0xf8ca,0x30b8 ,0xf83c,0x30f9 ,0xf7ae,0x3139 , + 0xf721,0x3179 ,0xf693,0x31b9 ,0xf606,0x31f8 , + 0xf579,0x3236 ,0xf4ec,0x3274 ,0xf45f,0x32b2 , + 0xf3d2,0x32ef ,0xf345,0x332c ,0xf2b8,0x3368 , + 0xf22c,0x33a3 ,0xf19f,0x33df ,0xf113,0x3419 , + 0xf087,0x3453 ,0xeffb,0x348d ,0xef6f,0x34c6 , + 0xeee3,0x34ff ,0xee58,0x3537 ,0xedcc,0x356e , + 0xed41,0x35a5 ,0xecb6,0x35dc ,0xec2b,0x3612 , + 0xeba1,0x3648 ,0xeb16,0x367d ,0xea8c,0x36b1 , + 0xea02,0x36e5 ,0xe978,0x3718 ,0xe8ef,0x374b , + 0xe865,0x377e ,0xe7dc,0x37b0 ,0xe753,0x37e1 , + 0xe6cb,0x3812 ,0xe642,0x3842 ,0xe5ba,0x3871 , + 0xe532,0x38a1 ,0xe4aa,0x38cf ,0xe423,0x38fd , + 0xe39c,0x392b ,0xe315,0x3958 ,0xe28e,0x3984 , + 0xe208,0x39b0 ,0xe182,0x39db ,0xe0fc,0x3a06 , + 0xe077,0x3a30 ,0xdff2,0x3a59 ,0xdf6d,0x3a82 , + 0xdee9,0x3aab ,0xde64,0x3ad3 ,0xdde1,0x3afa , + 0xdd5d,0x3b21 ,0xdcda,0x3b47 ,0xdc57,0x3b6d , + 0xdbd5,0x3b92 ,0xdb52,0x3bb6 ,0xdad1,0x3bda , + 0xda4f,0x3bfd ,0xd9ce,0x3c20 ,0xd94d,0x3c42 , + 0xd8cd,0x3c64 ,0xd84d,0x3c85 ,0xd7cd,0x3ca5 , + 0xd74e,0x3cc5 ,0xd6cf,0x3ce4 ,0xd651,0x3d03 , + 0xd5d3,0x3d21 ,0xd556,0x3d3f ,0xd4d8,0x3d5b , + 0xd45c,0x3d78 ,0xd3df,0x3d93 ,0xd363,0x3daf , + 0xd2e8,0x3dc9 ,0xd26d,0x3de3 ,0xd1f2,0x3dfc , + 0xd178,0x3e15 ,0xd0fe,0x3e2d ,0xd085,0x3e45 , + 0xd00c,0x3e5c ,0xcf94,0x3e72 ,0xcf1c,0x3e88 , + 0xcea5,0x3e9d ,0xce2e,0x3eb1 ,0xcdb7,0x3ec5 , + 0xcd41,0x3ed8 ,0xcccc,0x3eeb ,0xcc57,0x3efd , + 0xcbe2,0x3f0f ,0xcb6e,0x3f20 ,0xcafb,0x3f30 , + 0xca88,0x3f40 ,0xca15,0x3f4f ,0xc9a3,0x3f5d , + 0xc932,0x3f6b ,0xc8c1,0x3f78 ,0xc851,0x3f85 , + 0xc7e1,0x3f91 ,0xc772,0x3f9c ,0xc703,0x3fa7 , + 0xc695,0x3fb1 ,0xc627,0x3fbb ,0xc5ba,0x3fc4 , + 0xc54e,0x3fcc ,0xc4e2,0x3fd4 ,0xc476,0x3fdb , + 0xc40c,0x3fe1 ,0xc3a1,0x3fe7 ,0xc338,0x3fec , + 0xc2cf,0x3ff1 ,0xc266,0x3ff5 ,0xc1fe,0x3ff8 , + 0xc197,0x3ffb ,0xc130,0x3ffd ,0xc0ca,0x3fff , + 0xc065,0x4000 ,0xc000,0x4000 ,0xbf9c,0x4000 , + 0xbf38,0x3fff ,0xbed5,0x3ffd ,0xbe73,0x3ffb , + 0xbe11,0x3ff8 ,0xbdb0,0x3ff5 ,0xbd50,0x3ff1 , + 0xbcf0,0x3fec ,0xbc91,0x3fe7 ,0xbc32,0x3fe1 , + 0xbbd4,0x3fdb ,0xbb77,0x3fd4 ,0xbb1b,0x3fcc , + 0xbabf,0x3fc4 ,0xba64,0x3fbb ,0xba09,0x3fb1 , + 0xb9af,0x3fa7 ,0xb956,0x3f9c ,0xb8fd,0x3f91 , + 0xb8a6,0x3f85 ,0xb84f,0x3f78 ,0xb7f8,0x3f6b , + 0xb7a2,0x3f5d ,0xb74d,0x3f4f ,0xb6f9,0x3f40 , + 0xb6a5,0x3f30 ,0xb652,0x3f20 ,0xb600,0x3f0f , + 0xb5af,0x3efd ,0xb55e,0x3eeb ,0xb50e,0x3ed8 , + 0xb4be,0x3ec5 ,0xb470,0x3eb1 ,0xb422,0x3e9d , + 0xb3d5,0x3e88 ,0xb388,0x3e72 ,0xb33d,0x3e5c , + 0xb2f2,0x3e45 ,0xb2a7,0x3e2d ,0xb25e,0x3e15 , + 0xb215,0x3dfc ,0xb1cd,0x3de3 ,0xb186,0x3dc9 , + 0xb140,0x3daf ,0xb0fa,0x3d93 ,0xb0b5,0x3d78 , + 0xb071,0x3d5b ,0xb02d,0x3d3f ,0xafeb,0x3d21 , + 0xafa9,0x3d03 ,0xaf68,0x3ce4 ,0xaf28,0x3cc5 , + 0xaee8,0x3ca5 ,0xaea9,0x3c85 ,0xae6b,0x3c64 , + 0xae2e,0x3c42 ,0xadf2,0x3c20 ,0xadb6,0x3bfd , + 0xad7b,0x3bda ,0xad41,0x3bb6 ,0xad08,0x3b92 , + 0xacd0,0x3b6d ,0xac98,0x3b47 ,0xac61,0x3b21 , + 0xac2b,0x3afa ,0xabf6,0x3ad3 ,0xabc2,0x3aab , + 0xab8e,0x3a82 ,0xab5b,0x3a59 ,0xab29,0x3a30 , + 0xaaf8,0x3a06 ,0xaac8,0x39db ,0xaa98,0x39b0 , + 0xaa6a,0x3984 ,0xaa3c,0x3958 ,0xaa0f,0x392b , + 0xa9e3,0x38fd ,0xa9b7,0x38cf ,0xa98d,0x38a1 , + 0xa963,0x3871 ,0xa93a,0x3842 ,0xa912,0x3812 , + 0xa8eb,0x37e1 ,0xa8c5,0x37b0 ,0xa89f,0x377e , + 0xa87b,0x374b ,0xa857,0x3718 ,0xa834,0x36e5 , + 0xa812,0x36b1 ,0xa7f1,0x367d ,0xa7d0,0x3648 , + 0xa7b1,0x3612 ,0xa792,0x35dc ,0xa774,0x35a5 , + 0xa757,0x356e ,0xa73b,0x3537 ,0xa71f,0x34ff , + 0xa705,0x34c6 ,0xa6eb,0x348d ,0xa6d3,0x3453 , + 0xa6bb,0x3419 ,0xa6a4,0x33df ,0xa68e,0x33a3 , + 0xa678,0x3368 ,0xa664,0x332c ,0xa650,0x32ef , + 0xa63e,0x32b2 ,0xa62c,0x3274 ,0xa61b,0x3236 , + 0xa60b,0x31f8 ,0xa5fb,0x31b9 ,0xa5ed,0x3179 , + 0xa5e0,0x3139 ,0xa5d3,0x30f9 ,0xa5c7,0x30b8 , + 0xa5bc,0x3076 ,0xa5b2,0x3034 ,0xa5a9,0x2ff2 , + 0xa5a1,0x2faf ,0xa599,0x2f6c ,0xa593,0x2f28 , + 0xa58d,0x2ee4 ,0xa588,0x2e9f ,0xa585,0x2e5a , + 0xa581,0x2e15 ,0xa57f,0x2dcf ,0xa57e,0x2d88 , + 0xa57e,0x2d41 ,0xa57e,0x2cfa ,0xa57f,0x2cb2 , + 0xa581,0x2c6a ,0xa585,0x2c21 ,0xa588,0x2bd8 , + 0xa58d,0x2b8f ,0xa593,0x2b45 ,0xa599,0x2afb , + 0xa5a1,0x2ab0 ,0xa5a9,0x2a65 ,0xa5b2,0x2a1a , + 0xa5bc,0x29ce ,0xa5c7,0x2981 ,0xa5d3,0x2935 , + 0xa5e0,0x28e7 ,0xa5ed,0x289a ,0xa5fb,0x284c , + 0xa60b,0x27fe ,0xa61b,0x27af ,0xa62c,0x2760 , + 0xa63e,0x2711 ,0xa650,0x26c1 ,0xa664,0x2671 , + 0xa678,0x2620 ,0xa68e,0x25cf ,0xa6a4,0x257e , + 0xa6bb,0x252c ,0xa6d3,0x24da ,0xa6eb,0x2488 , + 0xa705,0x2435 ,0xa71f,0x23e2 ,0xa73b,0x238e , + 0xa757,0x233b ,0xa774,0x22e7 ,0xa792,0x2292 , + 0xa7b1,0x223d ,0xa7d0,0x21e8 ,0xa7f1,0x2193 , + 0xa812,0x213d ,0xa834,0x20e7 ,0xa857,0x2091 , + 0xa87b,0x203a ,0xa89f,0x1fe3 ,0xa8c5,0x1f8c , + 0xa8eb,0x1f34 ,0xa912,0x1edc ,0xa93a,0x1e84 , + 0xa963,0x1e2b ,0xa98d,0x1dd3 ,0xa9b7,0x1d79 , + 0xa9e3,0x1d20 ,0xaa0f,0x1cc6 ,0xaa3c,0x1c6c , + 0xaa6a,0x1c12 ,0xaa98,0x1bb8 ,0xaac8,0x1b5d , + 0xaaf8,0x1b02 ,0xab29,0x1aa7 ,0xab5b,0x1a4b , + 0xab8e,0x19ef ,0xabc2,0x1993 ,0xabf6,0x1937 , + 0xac2b,0x18db ,0xac61,0x187e ,0xac98,0x1821 , + 0xacd0,0x17c4 ,0xad08,0x1766 ,0xad41,0x1709 , + 0xad7b,0x16ab ,0xadb6,0x164c ,0xadf2,0x15ee , + 0xae2e,0x1590 ,0xae6b,0x1531 ,0xaea9,0x14d2 , + 0xaee8,0x1473 ,0xaf28,0x1413 ,0xaf68,0x13b4 , + 0xafa9,0x1354 ,0xafeb,0x12f4 ,0xb02d,0x1294 , + 0xb071,0x1234 ,0xb0b5,0x11d3 ,0xb0fa,0x1173 , + 0xb140,0x1112 ,0xb186,0x10b1 ,0xb1cd,0x1050 , + 0xb215,0x0fee ,0xb25e,0x0f8d ,0xb2a7,0x0f2b , + 0xb2f2,0x0eca ,0xb33d,0x0e68 ,0xb388,0x0e06 , + 0xb3d5,0x0da4 ,0xb422,0x0d41 ,0xb470,0x0cdf , + 0xb4be,0x0c7c ,0xb50e,0x0c1a ,0xb55e,0x0bb7 , + 0xb5af,0x0b54 ,0xb600,0x0af1 ,0xb652,0x0a8e , + 0xb6a5,0x0a2b ,0xb6f9,0x09c7 ,0xb74d,0x0964 , + 0xb7a2,0x0901 ,0xb7f8,0x089d ,0xb84f,0x0839 , + 0xb8a6,0x07d6 ,0xb8fd,0x0772 ,0xb956,0x070e , + 0xb9af,0x06aa ,0xba09,0x0646 ,0xba64,0x05e2 , + 0xbabf,0x057e ,0xbb1b,0x051a ,0xbb77,0x04b5 , + 0xbbd4,0x0451 ,0xbc32,0x03ed ,0xbc91,0x0388 , + 0xbcf0,0x0324 ,0xbd50,0x02c0 ,0xbdb0,0x025b , + 0xbe11,0x01f7 ,0xbe73,0x0192 ,0xbed5,0x012e , + 0xbf38,0x00c9 ,0xbf9c,0x0065 }; + + +extern const int s_Q14R_8; +const int s_Q14R_8 = 1024; +extern const unsigned short t_Q14R_8[2032]; +const unsigned short t_Q14R_8[2032] = { + 0x4000,0x0000 ,0x4000,0x0000 ,0x4000,0x0000 , + 0x3b21,0x187e ,0x3ec5,0x0c7c ,0x3537,0x238e , + 0x2d41,0x2d41 ,0x3b21,0x187e ,0x187e,0x3b21 , + 0x187e,0x3b21 ,0x3537,0x238e ,0xf384,0x3ec5 , + 0x0000,0x4000 ,0x2d41,0x2d41 ,0xd2bf,0x2d41 , + 0xe782,0x3b21 ,0x238e,0x3537 ,0xc13b,0x0c7c , + 0xd2bf,0x2d41 ,0x187e,0x3b21 ,0xc4df,0xe782 , + 0xc4df,0x187e ,0x0c7c,0x3ec5 ,0xdc72,0xcac9 , + 0x4000,0x0000 ,0x4000,0x0000 ,0x4000,0x0000 , + 0x3fb1,0x0646 ,0x3fec,0x0324 ,0x3f4f,0x0964 , + 0x3ec5,0x0c7c ,0x3fb1,0x0646 ,0x3d3f,0x1294 , + 0x3d3f,0x1294 ,0x3f4f,0x0964 ,0x39db,0x1b5d , + 0x3b21,0x187e ,0x3ec5,0x0c7c ,0x3537,0x238e , + 0x3871,0x1e2b ,0x3e15,0x0f8d ,0x2f6c,0x2afb , + 0x3537,0x238e ,0x3d3f,0x1294 ,0x289a,0x3179 , + 0x3179,0x289a ,0x3c42,0x1590 ,0x20e7,0x36e5 , + 0x2d41,0x2d41 ,0x3b21,0x187e ,0x187e,0x3b21 , + 0x289a,0x3179 ,0x39db,0x1b5d ,0x0f8d,0x3e15 , + 0x238e,0x3537 ,0x3871,0x1e2b ,0x0646,0x3fb1 , + 0x1e2b,0x3871 ,0x36e5,0x20e7 ,0xfcdc,0x3fec , + 0x187e,0x3b21 ,0x3537,0x238e ,0xf384,0x3ec5 , + 0x1294,0x3d3f ,0x3368,0x2620 ,0xea70,0x3c42 , + 0x0c7c,0x3ec5 ,0x3179,0x289a ,0xe1d5,0x3871 , + 0x0646,0x3fb1 ,0x2f6c,0x2afb ,0xd9e0,0x3368 , + 0x0000,0x4000 ,0x2d41,0x2d41 ,0xd2bf,0x2d41 , + 0xf9ba,0x3fb1 ,0x2afb,0x2f6c ,0xcc98,0x2620 , + 0xf384,0x3ec5 ,0x289a,0x3179 ,0xc78f,0x1e2b , + 0xed6c,0x3d3f ,0x2620,0x3368 ,0xc3be,0x1590 , + 0xe782,0x3b21 ,0x238e,0x3537 ,0xc13b,0x0c7c , + 0xe1d5,0x3871 ,0x20e7,0x36e5 ,0xc014,0x0324 , + 0xdc72,0x3537 ,0x1e2b,0x3871 ,0xc04f,0xf9ba , + 0xd766,0x3179 ,0x1b5d,0x39db ,0xc1eb,0xf073 , + 0xd2bf,0x2d41 ,0x187e,0x3b21 ,0xc4df,0xe782 , + 0xce87,0x289a ,0x1590,0x3c42 ,0xc91b,0xdf19 , + 0xcac9,0x238e ,0x1294,0x3d3f ,0xce87,0xd766 , + 0xc78f,0x1e2b ,0x0f8d,0x3e15 ,0xd505,0xd094 , + 0xc4df,0x187e ,0x0c7c,0x3ec5 ,0xdc72,0xcac9 , + 0xc2c1,0x1294 ,0x0964,0x3f4f ,0xe4a3,0xc625 , + 0xc13b,0x0c7c ,0x0646,0x3fb1 ,0xed6c,0xc2c1 , + 0xc04f,0x0646 ,0x0324,0x3fec ,0xf69c,0xc0b1 , + 0x4000,0x0000 ,0x4000,0x0000 ,0x4000,0x0000 , + 0x3ffb,0x0192 ,0x3fff,0x00c9 ,0x3ff5,0x025b , + 0x3fec,0x0324 ,0x3ffb,0x0192 ,0x3fd4,0x04b5 , + 0x3fd4,0x04b5 ,0x3ff5,0x025b ,0x3f9c,0x070e , + 0x3fb1,0x0646 ,0x3fec,0x0324 ,0x3f4f,0x0964 , + 0x3f85,0x07d6 ,0x3fe1,0x03ed ,0x3eeb,0x0bb7 , + 0x3f4f,0x0964 ,0x3fd4,0x04b5 ,0x3e72,0x0e06 , + 0x3f0f,0x0af1 ,0x3fc4,0x057e ,0x3de3,0x1050 , + 0x3ec5,0x0c7c ,0x3fb1,0x0646 ,0x3d3f,0x1294 , + 0x3e72,0x0e06 ,0x3f9c,0x070e ,0x3c85,0x14d2 , + 0x3e15,0x0f8d ,0x3f85,0x07d6 ,0x3bb6,0x1709 , + 0x3daf,0x1112 ,0x3f6b,0x089d ,0x3ad3,0x1937 , + 0x3d3f,0x1294 ,0x3f4f,0x0964 ,0x39db,0x1b5d , + 0x3cc5,0x1413 ,0x3f30,0x0a2b ,0x38cf,0x1d79 , + 0x3c42,0x1590 ,0x3f0f,0x0af1 ,0x37b0,0x1f8c , + 0x3bb6,0x1709 ,0x3eeb,0x0bb7 ,0x367d,0x2193 , + 0x3b21,0x187e ,0x3ec5,0x0c7c ,0x3537,0x238e , + 0x3a82,0x19ef ,0x3e9d,0x0d41 ,0x33df,0x257e , + 0x39db,0x1b5d ,0x3e72,0x0e06 ,0x3274,0x2760 , + 0x392b,0x1cc6 ,0x3e45,0x0eca ,0x30f9,0x2935 , + 0x3871,0x1e2b ,0x3e15,0x0f8d ,0x2f6c,0x2afb , + 0x37b0,0x1f8c ,0x3de3,0x1050 ,0x2dcf,0x2cb2 , + 0x36e5,0x20e7 ,0x3daf,0x1112 ,0x2c21,0x2e5a , + 0x3612,0x223d ,0x3d78,0x11d3 ,0x2a65,0x2ff2 , + 0x3537,0x238e ,0x3d3f,0x1294 ,0x289a,0x3179 , + 0x3453,0x24da ,0x3d03,0x1354 ,0x26c1,0x32ef , + 0x3368,0x2620 ,0x3cc5,0x1413 ,0x24da,0x3453 , + 0x3274,0x2760 ,0x3c85,0x14d2 ,0x22e7,0x35a5 , + 0x3179,0x289a ,0x3c42,0x1590 ,0x20e7,0x36e5 , + 0x3076,0x29ce ,0x3bfd,0x164c ,0x1edc,0x3812 , + 0x2f6c,0x2afb ,0x3bb6,0x1709 ,0x1cc6,0x392b , + 0x2e5a,0x2c21 ,0x3b6d,0x17c4 ,0x1aa7,0x3a30 , + 0x2d41,0x2d41 ,0x3b21,0x187e ,0x187e,0x3b21 , + 0x2c21,0x2e5a ,0x3ad3,0x1937 ,0x164c,0x3bfd , + 0x2afb,0x2f6c ,0x3a82,0x19ef ,0x1413,0x3cc5 , + 0x29ce,0x3076 ,0x3a30,0x1aa7 ,0x11d3,0x3d78 , + 0x289a,0x3179 ,0x39db,0x1b5d ,0x0f8d,0x3e15 , + 0x2760,0x3274 ,0x3984,0x1c12 ,0x0d41,0x3e9d , + 0x2620,0x3368 ,0x392b,0x1cc6 ,0x0af1,0x3f0f , + 0x24da,0x3453 ,0x38cf,0x1d79 ,0x089d,0x3f6b , + 0x238e,0x3537 ,0x3871,0x1e2b ,0x0646,0x3fb1 , + 0x223d,0x3612 ,0x3812,0x1edc ,0x03ed,0x3fe1 , + 0x20e7,0x36e5 ,0x37b0,0x1f8c ,0x0192,0x3ffb , + 0x1f8c,0x37b0 ,0x374b,0x203a ,0xff37,0x3fff , + 0x1e2b,0x3871 ,0x36e5,0x20e7 ,0xfcdc,0x3fec , + 0x1cc6,0x392b ,0x367d,0x2193 ,0xfa82,0x3fc4 , + 0x1b5d,0x39db ,0x3612,0x223d ,0xf82a,0x3f85 , + 0x19ef,0x3a82 ,0x35a5,0x22e7 ,0xf5d5,0x3f30 , + 0x187e,0x3b21 ,0x3537,0x238e ,0xf384,0x3ec5 , + 0x1709,0x3bb6 ,0x34c6,0x2435 ,0xf136,0x3e45 , + 0x1590,0x3c42 ,0x3453,0x24da ,0xeeee,0x3daf , + 0x1413,0x3cc5 ,0x33df,0x257e ,0xecac,0x3d03 , + 0x1294,0x3d3f ,0x3368,0x2620 ,0xea70,0x3c42 , + 0x1112,0x3daf ,0x32ef,0x26c1 ,0xe83c,0x3b6d , + 0x0f8d,0x3e15 ,0x3274,0x2760 ,0xe611,0x3a82 , + 0x0e06,0x3e72 ,0x31f8,0x27fe ,0xe3ee,0x3984 , + 0x0c7c,0x3ec5 ,0x3179,0x289a ,0xe1d5,0x3871 , + 0x0af1,0x3f0f ,0x30f9,0x2935 ,0xdfc6,0x374b , + 0x0964,0x3f4f ,0x3076,0x29ce ,0xddc3,0x3612 , + 0x07d6,0x3f85 ,0x2ff2,0x2a65 ,0xdbcb,0x34c6 , + 0x0646,0x3fb1 ,0x2f6c,0x2afb ,0xd9e0,0x3368 , + 0x04b5,0x3fd4 ,0x2ee4,0x2b8f ,0xd802,0x31f8 , + 0x0324,0x3fec ,0x2e5a,0x2c21 ,0xd632,0x3076 , + 0x0192,0x3ffb ,0x2dcf,0x2cb2 ,0xd471,0x2ee4 , + 0x0000,0x4000 ,0x2d41,0x2d41 ,0xd2bf,0x2d41 , + 0xfe6e,0x3ffb ,0x2cb2,0x2dcf ,0xd11c,0x2b8f , + 0xfcdc,0x3fec ,0x2c21,0x2e5a ,0xcf8a,0x29ce , + 0xfb4b,0x3fd4 ,0x2b8f,0x2ee4 ,0xce08,0x27fe , + 0xf9ba,0x3fb1 ,0x2afb,0x2f6c ,0xcc98,0x2620 , + 0xf82a,0x3f85 ,0x2a65,0x2ff2 ,0xcb3a,0x2435 , + 0xf69c,0x3f4f ,0x29ce,0x3076 ,0xc9ee,0x223d , + 0xf50f,0x3f0f ,0x2935,0x30f9 ,0xc8b5,0x203a , + 0xf384,0x3ec5 ,0x289a,0x3179 ,0xc78f,0x1e2b , + 0xf1fa,0x3e72 ,0x27fe,0x31f8 ,0xc67c,0x1c12 , + 0xf073,0x3e15 ,0x2760,0x3274 ,0xc57e,0x19ef , + 0xeeee,0x3daf ,0x26c1,0x32ef ,0xc493,0x17c4 , + 0xed6c,0x3d3f ,0x2620,0x3368 ,0xc3be,0x1590 , + 0xebed,0x3cc5 ,0x257e,0x33df ,0xc2fd,0x1354 , + 0xea70,0x3c42 ,0x24da,0x3453 ,0xc251,0x1112 , + 0xe8f7,0x3bb6 ,0x2435,0x34c6 ,0xc1bb,0x0eca , + 0xe782,0x3b21 ,0x238e,0x3537 ,0xc13b,0x0c7c , + 0xe611,0x3a82 ,0x22e7,0x35a5 ,0xc0d0,0x0a2b , + 0xe4a3,0x39db ,0x223d,0x3612 ,0xc07b,0x07d6 , + 0xe33a,0x392b ,0x2193,0x367d ,0xc03c,0x057e , + 0xe1d5,0x3871 ,0x20e7,0x36e5 ,0xc014,0x0324 , + 0xe074,0x37b0 ,0x203a,0x374b ,0xc001,0x00c9 , + 0xdf19,0x36e5 ,0x1f8c,0x37b0 ,0xc005,0xfe6e , + 0xddc3,0x3612 ,0x1edc,0x3812 ,0xc01f,0xfc13 , + 0xdc72,0x3537 ,0x1e2b,0x3871 ,0xc04f,0xf9ba , + 0xdb26,0x3453 ,0x1d79,0x38cf ,0xc095,0xf763 , + 0xd9e0,0x3368 ,0x1cc6,0x392b ,0xc0f1,0xf50f , + 0xd8a0,0x3274 ,0x1c12,0x3984 ,0xc163,0xf2bf , + 0xd766,0x3179 ,0x1b5d,0x39db ,0xc1eb,0xf073 , + 0xd632,0x3076 ,0x1aa7,0x3a30 ,0xc288,0xee2d , + 0xd505,0x2f6c ,0x19ef,0x3a82 ,0xc33b,0xebed , + 0xd3df,0x2e5a ,0x1937,0x3ad3 ,0xc403,0xe9b4 , + 0xd2bf,0x2d41 ,0x187e,0x3b21 ,0xc4df,0xe782 , + 0xd1a6,0x2c21 ,0x17c4,0x3b6d ,0xc5d0,0xe559 , + 0xd094,0x2afb ,0x1709,0x3bb6 ,0xc6d5,0xe33a , + 0xcf8a,0x29ce ,0x164c,0x3bfd ,0xc7ee,0xe124 , + 0xce87,0x289a ,0x1590,0x3c42 ,0xc91b,0xdf19 , + 0xcd8c,0x2760 ,0x14d2,0x3c85 ,0xca5b,0xdd19 , + 0xcc98,0x2620 ,0x1413,0x3cc5 ,0xcbad,0xdb26 , + 0xcbad,0x24da ,0x1354,0x3d03 ,0xcd11,0xd93f , + 0xcac9,0x238e ,0x1294,0x3d3f ,0xce87,0xd766 , + 0xc9ee,0x223d ,0x11d3,0x3d78 ,0xd00e,0xd59b , + 0xc91b,0x20e7 ,0x1112,0x3daf ,0xd1a6,0xd3df , + 0xc850,0x1f8c ,0x1050,0x3de3 ,0xd34e,0xd231 , + 0xc78f,0x1e2b ,0x0f8d,0x3e15 ,0xd505,0xd094 , + 0xc6d5,0x1cc6 ,0x0eca,0x3e45 ,0xd6cb,0xcf07 , + 0xc625,0x1b5d ,0x0e06,0x3e72 ,0xd8a0,0xcd8c , + 0xc57e,0x19ef ,0x0d41,0x3e9d ,0xda82,0xcc21 , + 0xc4df,0x187e ,0x0c7c,0x3ec5 ,0xdc72,0xcac9 , + 0xc44a,0x1709 ,0x0bb7,0x3eeb ,0xde6d,0xc983 , + 0xc3be,0x1590 ,0x0af1,0x3f0f ,0xe074,0xc850 , + 0xc33b,0x1413 ,0x0a2b,0x3f30 ,0xe287,0xc731 , + 0xc2c1,0x1294 ,0x0964,0x3f4f ,0xe4a3,0xc625 , + 0xc251,0x1112 ,0x089d,0x3f6b ,0xe6c9,0xc52d , + 0xc1eb,0x0f8d ,0x07d6,0x3f85 ,0xe8f7,0xc44a , + 0xc18e,0x0e06 ,0x070e,0x3f9c ,0xeb2e,0xc37b , + 0xc13b,0x0c7c ,0x0646,0x3fb1 ,0xed6c,0xc2c1 , + 0xc0f1,0x0af1 ,0x057e,0x3fc4 ,0xefb0,0xc21d , + 0xc0b1,0x0964 ,0x04b5,0x3fd4 ,0xf1fa,0xc18e , + 0xc07b,0x07d6 ,0x03ed,0x3fe1 ,0xf449,0xc115 , + 0xc04f,0x0646 ,0x0324,0x3fec ,0xf69c,0xc0b1 , + 0xc02c,0x04b5 ,0x025b,0x3ff5 ,0xf8f2,0xc064 , + 0xc014,0x0324 ,0x0192,0x3ffb ,0xfb4b,0xc02c , + 0xc005,0x0192 ,0x00c9,0x3fff ,0xfda5,0xc00b , + 0x4000,0x0000 ,0x4000,0x0065 ,0x3fff,0x00c9 , + 0x3ffd,0x012e ,0x3ffb,0x0192 ,0x3ff8,0x01f7 , + 0x3ff5,0x025b ,0x3ff1,0x02c0 ,0x3fec,0x0324 , + 0x3fe7,0x0388 ,0x3fe1,0x03ed ,0x3fdb,0x0451 , + 0x3fd4,0x04b5 ,0x3fcc,0x051a ,0x3fc4,0x057e , + 0x3fbb,0x05e2 ,0x3fb1,0x0646 ,0x3fa7,0x06aa , + 0x3f9c,0x070e ,0x3f91,0x0772 ,0x3f85,0x07d6 , + 0x3f78,0x0839 ,0x3f6b,0x089d ,0x3f5d,0x0901 , + 0x3f4f,0x0964 ,0x3f40,0x09c7 ,0x3f30,0x0a2b , + 0x3f20,0x0a8e ,0x3f0f,0x0af1 ,0x3efd,0x0b54 , + 0x3eeb,0x0bb7 ,0x3ed8,0x0c1a ,0x3ec5,0x0c7c , + 0x3eb1,0x0cdf ,0x3e9d,0x0d41 ,0x3e88,0x0da4 , + 0x3e72,0x0e06 ,0x3e5c,0x0e68 ,0x3e45,0x0eca , + 0x3e2d,0x0f2b ,0x3e15,0x0f8d ,0x3dfc,0x0fee , + 0x3de3,0x1050 ,0x3dc9,0x10b1 ,0x3daf,0x1112 , + 0x3d93,0x1173 ,0x3d78,0x11d3 ,0x3d5b,0x1234 , + 0x3d3f,0x1294 ,0x3d21,0x12f4 ,0x3d03,0x1354 , + 0x3ce4,0x13b4 ,0x3cc5,0x1413 ,0x3ca5,0x1473 , + 0x3c85,0x14d2 ,0x3c64,0x1531 ,0x3c42,0x1590 , + 0x3c20,0x15ee ,0x3bfd,0x164c ,0x3bda,0x16ab , + 0x3bb6,0x1709 ,0x3b92,0x1766 ,0x3b6d,0x17c4 , + 0x3b47,0x1821 ,0x3b21,0x187e ,0x3afa,0x18db , + 0x3ad3,0x1937 ,0x3aab,0x1993 ,0x3a82,0x19ef , + 0x3a59,0x1a4b ,0x3a30,0x1aa7 ,0x3a06,0x1b02 , + 0x39db,0x1b5d ,0x39b0,0x1bb8 ,0x3984,0x1c12 , + 0x3958,0x1c6c ,0x392b,0x1cc6 ,0x38fd,0x1d20 , + 0x38cf,0x1d79 ,0x38a1,0x1dd3 ,0x3871,0x1e2b , + 0x3842,0x1e84 ,0x3812,0x1edc ,0x37e1,0x1f34 , + 0x37b0,0x1f8c ,0x377e,0x1fe3 ,0x374b,0x203a , + 0x3718,0x2091 ,0x36e5,0x20e7 ,0x36b1,0x213d , + 0x367d,0x2193 ,0x3648,0x21e8 ,0x3612,0x223d , + 0x35dc,0x2292 ,0x35a5,0x22e7 ,0x356e,0x233b , + 0x3537,0x238e ,0x34ff,0x23e2 ,0x34c6,0x2435 , + 0x348d,0x2488 ,0x3453,0x24da ,0x3419,0x252c , + 0x33df,0x257e ,0x33a3,0x25cf ,0x3368,0x2620 , + 0x332c,0x2671 ,0x32ef,0x26c1 ,0x32b2,0x2711 , + 0x3274,0x2760 ,0x3236,0x27af ,0x31f8,0x27fe , + 0x31b9,0x284c ,0x3179,0x289a ,0x3139,0x28e7 , + 0x30f9,0x2935 ,0x30b8,0x2981 ,0x3076,0x29ce , + 0x3034,0x2a1a ,0x2ff2,0x2a65 ,0x2faf,0x2ab0 , + 0x2f6c,0x2afb ,0x2f28,0x2b45 ,0x2ee4,0x2b8f , + 0x2e9f,0x2bd8 ,0x2e5a,0x2c21 ,0x2e15,0x2c6a , + 0x2dcf,0x2cb2 ,0x2d88,0x2cfa ,0x2d41,0x2d41 , + 0x2cfa,0x2d88 ,0x2cb2,0x2dcf ,0x2c6a,0x2e15 , + 0x2c21,0x2e5a ,0x2bd8,0x2e9f ,0x2b8f,0x2ee4 , + 0x2b45,0x2f28 ,0x2afb,0x2f6c ,0x2ab0,0x2faf , + 0x2a65,0x2ff2 ,0x2a1a,0x3034 ,0x29ce,0x3076 , + 0x2981,0x30b8 ,0x2935,0x30f9 ,0x28e7,0x3139 , + 0x289a,0x3179 ,0x284c,0x31b9 ,0x27fe,0x31f8 , + 0x27af,0x3236 ,0x2760,0x3274 ,0x2711,0x32b2 , + 0x26c1,0x32ef ,0x2671,0x332c ,0x2620,0x3368 , + 0x25cf,0x33a3 ,0x257e,0x33df ,0x252c,0x3419 , + 0x24da,0x3453 ,0x2488,0x348d ,0x2435,0x34c6 , + 0x23e2,0x34ff ,0x238e,0x3537 ,0x233b,0x356e , + 0x22e7,0x35a5 ,0x2292,0x35dc ,0x223d,0x3612 , + 0x21e8,0x3648 ,0x2193,0x367d ,0x213d,0x36b1 , + 0x20e7,0x36e5 ,0x2091,0x3718 ,0x203a,0x374b , + 0x1fe3,0x377e ,0x1f8c,0x37b0 ,0x1f34,0x37e1 , + 0x1edc,0x3812 ,0x1e84,0x3842 ,0x1e2b,0x3871 , + 0x1dd3,0x38a1 ,0x1d79,0x38cf ,0x1d20,0x38fd , + 0x1cc6,0x392b ,0x1c6c,0x3958 ,0x1c12,0x3984 , + 0x1bb8,0x39b0 ,0x1b5d,0x39db ,0x1b02,0x3a06 , + 0x1aa7,0x3a30 ,0x1a4b,0x3a59 ,0x19ef,0x3a82 , + 0x1993,0x3aab ,0x1937,0x3ad3 ,0x18db,0x3afa , + 0x187e,0x3b21 ,0x1821,0x3b47 ,0x17c4,0x3b6d , + 0x1766,0x3b92 ,0x1709,0x3bb6 ,0x16ab,0x3bda , + 0x164c,0x3bfd ,0x15ee,0x3c20 ,0x1590,0x3c42 , + 0x1531,0x3c64 ,0x14d2,0x3c85 ,0x1473,0x3ca5 , + 0x1413,0x3cc5 ,0x13b4,0x3ce4 ,0x1354,0x3d03 , + 0x12f4,0x3d21 ,0x1294,0x3d3f ,0x1234,0x3d5b , + 0x11d3,0x3d78 ,0x1173,0x3d93 ,0x1112,0x3daf , + 0x10b1,0x3dc9 ,0x1050,0x3de3 ,0x0fee,0x3dfc , + 0x0f8d,0x3e15 ,0x0f2b,0x3e2d ,0x0eca,0x3e45 , + 0x0e68,0x3e5c ,0x0e06,0x3e72 ,0x0da4,0x3e88 , + 0x0d41,0x3e9d ,0x0cdf,0x3eb1 ,0x0c7c,0x3ec5 , + 0x0c1a,0x3ed8 ,0x0bb7,0x3eeb ,0x0b54,0x3efd , + 0x0af1,0x3f0f ,0x0a8e,0x3f20 ,0x0a2b,0x3f30 , + 0x09c7,0x3f40 ,0x0964,0x3f4f ,0x0901,0x3f5d , + 0x089d,0x3f6b ,0x0839,0x3f78 ,0x07d6,0x3f85 , + 0x0772,0x3f91 ,0x070e,0x3f9c ,0x06aa,0x3fa7 , + 0x0646,0x3fb1 ,0x05e2,0x3fbb ,0x057e,0x3fc4 , + 0x051a,0x3fcc ,0x04b5,0x3fd4 ,0x0451,0x3fdb , + 0x03ed,0x3fe1 ,0x0388,0x3fe7 ,0x0324,0x3fec , + 0x02c0,0x3ff1 ,0x025b,0x3ff5 ,0x01f7,0x3ff8 , + 0x0192,0x3ffb ,0x012e,0x3ffd ,0x00c9,0x3fff , + 0x0065,0x4000 ,0x0000,0x4000 ,0xff9b,0x4000 , + 0xff37,0x3fff ,0xfed2,0x3ffd ,0xfe6e,0x3ffb , + 0xfe09,0x3ff8 ,0xfda5,0x3ff5 ,0xfd40,0x3ff1 , + 0xfcdc,0x3fec ,0xfc78,0x3fe7 ,0xfc13,0x3fe1 , + 0xfbaf,0x3fdb ,0xfb4b,0x3fd4 ,0xfae6,0x3fcc , + 0xfa82,0x3fc4 ,0xfa1e,0x3fbb ,0xf9ba,0x3fb1 , + 0xf956,0x3fa7 ,0xf8f2,0x3f9c ,0xf88e,0x3f91 , + 0xf82a,0x3f85 ,0xf7c7,0x3f78 ,0xf763,0x3f6b , + 0xf6ff,0x3f5d ,0xf69c,0x3f4f ,0xf639,0x3f40 , + 0xf5d5,0x3f30 ,0xf572,0x3f20 ,0xf50f,0x3f0f , + 0xf4ac,0x3efd ,0xf449,0x3eeb ,0xf3e6,0x3ed8 , + 0xf384,0x3ec5 ,0xf321,0x3eb1 ,0xf2bf,0x3e9d , + 0xf25c,0x3e88 ,0xf1fa,0x3e72 ,0xf198,0x3e5c , + 0xf136,0x3e45 ,0xf0d5,0x3e2d ,0xf073,0x3e15 , + 0xf012,0x3dfc ,0xefb0,0x3de3 ,0xef4f,0x3dc9 , + 0xeeee,0x3daf ,0xee8d,0x3d93 ,0xee2d,0x3d78 , + 0xedcc,0x3d5b ,0xed6c,0x3d3f ,0xed0c,0x3d21 , + 0xecac,0x3d03 ,0xec4c,0x3ce4 ,0xebed,0x3cc5 , + 0xeb8d,0x3ca5 ,0xeb2e,0x3c85 ,0xeacf,0x3c64 , + 0xea70,0x3c42 ,0xea12,0x3c20 ,0xe9b4,0x3bfd , + 0xe955,0x3bda ,0xe8f7,0x3bb6 ,0xe89a,0x3b92 , + 0xe83c,0x3b6d ,0xe7df,0x3b47 ,0xe782,0x3b21 , + 0xe725,0x3afa ,0xe6c9,0x3ad3 ,0xe66d,0x3aab , + 0xe611,0x3a82 ,0xe5b5,0x3a59 ,0xe559,0x3a30 , + 0xe4fe,0x3a06 ,0xe4a3,0x39db ,0xe448,0x39b0 , + 0xe3ee,0x3984 ,0xe394,0x3958 ,0xe33a,0x392b , + 0xe2e0,0x38fd ,0xe287,0x38cf ,0xe22d,0x38a1 , + 0xe1d5,0x3871 ,0xe17c,0x3842 ,0xe124,0x3812 , + 0xe0cc,0x37e1 ,0xe074,0x37b0 ,0xe01d,0x377e , + 0xdfc6,0x374b ,0xdf6f,0x3718 ,0xdf19,0x36e5 , + 0xdec3,0x36b1 ,0xde6d,0x367d ,0xde18,0x3648 , + 0xddc3,0x3612 ,0xdd6e,0x35dc ,0xdd19,0x35a5 , + 0xdcc5,0x356e ,0xdc72,0x3537 ,0xdc1e,0x34ff , + 0xdbcb,0x34c6 ,0xdb78,0x348d ,0xdb26,0x3453 , + 0xdad4,0x3419 ,0xda82,0x33df ,0xda31,0x33a3 , + 0xd9e0,0x3368 ,0xd98f,0x332c ,0xd93f,0x32ef , + 0xd8ef,0x32b2 ,0xd8a0,0x3274 ,0xd851,0x3236 , + 0xd802,0x31f8 ,0xd7b4,0x31b9 ,0xd766,0x3179 , + 0xd719,0x3139 ,0xd6cb,0x30f9 ,0xd67f,0x30b8 , + 0xd632,0x3076 ,0xd5e6,0x3034 ,0xd59b,0x2ff2 , + 0xd550,0x2faf ,0xd505,0x2f6c ,0xd4bb,0x2f28 , + 0xd471,0x2ee4 ,0xd428,0x2e9f ,0xd3df,0x2e5a , + 0xd396,0x2e15 ,0xd34e,0x2dcf ,0xd306,0x2d88 , + 0xd2bf,0x2d41 ,0xd278,0x2cfa ,0xd231,0x2cb2 , + 0xd1eb,0x2c6a ,0xd1a6,0x2c21 ,0xd161,0x2bd8 , + 0xd11c,0x2b8f ,0xd0d8,0x2b45 ,0xd094,0x2afb , + 0xd051,0x2ab0 ,0xd00e,0x2a65 ,0xcfcc,0x2a1a , + 0xcf8a,0x29ce ,0xcf48,0x2981 ,0xcf07,0x2935 , + 0xcec7,0x28e7 ,0xce87,0x289a ,0xce47,0x284c , + 0xce08,0x27fe ,0xcdca,0x27af ,0xcd8c,0x2760 , + 0xcd4e,0x2711 ,0xcd11,0x26c1 ,0xccd4,0x2671 , + 0xcc98,0x2620 ,0xcc5d,0x25cf ,0xcc21,0x257e , + 0xcbe7,0x252c ,0xcbad,0x24da ,0xcb73,0x2488 , + 0xcb3a,0x2435 ,0xcb01,0x23e2 ,0xcac9,0x238e , + 0xca92,0x233b ,0xca5b,0x22e7 ,0xca24,0x2292 , + 0xc9ee,0x223d ,0xc9b8,0x21e8 ,0xc983,0x2193 , + 0xc94f,0x213d ,0xc91b,0x20e7 ,0xc8e8,0x2091 , + 0xc8b5,0x203a ,0xc882,0x1fe3 ,0xc850,0x1f8c , + 0xc81f,0x1f34 ,0xc7ee,0x1edc ,0xc7be,0x1e84 , + 0xc78f,0x1e2b ,0xc75f,0x1dd3 ,0xc731,0x1d79 , + 0xc703,0x1d20 ,0xc6d5,0x1cc6 ,0xc6a8,0x1c6c , + 0xc67c,0x1c12 ,0xc650,0x1bb8 ,0xc625,0x1b5d , + 0xc5fa,0x1b02 ,0xc5d0,0x1aa7 ,0xc5a7,0x1a4b , + 0xc57e,0x19ef ,0xc555,0x1993 ,0xc52d,0x1937 , + 0xc506,0x18db ,0xc4df,0x187e ,0xc4b9,0x1821 , + 0xc493,0x17c4 ,0xc46e,0x1766 ,0xc44a,0x1709 , + 0xc426,0x16ab ,0xc403,0x164c ,0xc3e0,0x15ee , + 0xc3be,0x1590 ,0xc39c,0x1531 ,0xc37b,0x14d2 , + 0xc35b,0x1473 ,0xc33b,0x1413 ,0xc31c,0x13b4 , + 0xc2fd,0x1354 ,0xc2df,0x12f4 ,0xc2c1,0x1294 , + 0xc2a5,0x1234 ,0xc288,0x11d3 ,0xc26d,0x1173 , + 0xc251,0x1112 ,0xc237,0x10b1 ,0xc21d,0x1050 , + 0xc204,0x0fee ,0xc1eb,0x0f8d ,0xc1d3,0x0f2b , + 0xc1bb,0x0eca ,0xc1a4,0x0e68 ,0xc18e,0x0e06 , + 0xc178,0x0da4 ,0xc163,0x0d41 ,0xc14f,0x0cdf , + 0xc13b,0x0c7c ,0xc128,0x0c1a ,0xc115,0x0bb7 , + 0xc103,0x0b54 ,0xc0f1,0x0af1 ,0xc0e0,0x0a8e , + 0xc0d0,0x0a2b ,0xc0c0,0x09c7 ,0xc0b1,0x0964 , + 0xc0a3,0x0901 ,0xc095,0x089d ,0xc088,0x0839 , + 0xc07b,0x07d6 ,0xc06f,0x0772 ,0xc064,0x070e , + 0xc059,0x06aa ,0xc04f,0x0646 ,0xc045,0x05e2 , + 0xc03c,0x057e ,0xc034,0x051a ,0xc02c,0x04b5 , + 0xc025,0x0451 ,0xc01f,0x03ed ,0xc019,0x0388 , + 0xc014,0x0324 ,0xc00f,0x02c0 ,0xc00b,0x025b , + 0xc008,0x01f7 ,0xc005,0x0192 ,0xc003,0x012e , + 0xc001,0x00c9 ,0xc000,0x0065 }; diff --git a/src/mod/codecs/mod_iSAC/webrtc_fft_t_rad.c b/src/mod/codecs/mod_iSAC/webrtc_fft_t_rad.c new file mode 100644 index 0000000000..13fbd9f53e --- /dev/null +++ b/src/mod/codecs/mod_iSAC/webrtc_fft_t_rad.c @@ -0,0 +1,27 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + + +/* + * This file contains the Q14 radix-2 tables used in ARM9E optimization routines. + * + */ + +extern const unsigned short t_Q14S_rad8[2]; +const unsigned short t_Q14S_rad8[2] = { 0x0000,0x2d41 }; + +//extern const int t_Q30S_rad8[2]; +//const int t_Q30S_rad8[2] = { 0x00000000,0x2d413ccd }; + +extern const unsigned short t_Q14R_rad8[2]; +const unsigned short t_Q14R_rad8[2] = { 0x2d41,0x2d41 }; + +//extern const int t_Q30R_rad8[2]; +//const int t_Q30R_rad8[2] = { 0x2d413ccd,0x2d413ccd };