2010-03-17 16:16:27 +00:00
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/***********************************************************************
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Copyright (c) 2006-2010, Skype Limited. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, (subject to the limitations in the disclaimer below)
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are permitted provided that the following conditions are met:
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- Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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- Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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- Neither the name of Skype Limited, nor the names of specific
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contributors, may be used to endorse or promote products derived from
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this software without specific prior written permission.
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NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
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BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
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BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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***********************************************************************/
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#ifndef SKP_SILK_STRUCTS_FIX_H
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#define SKP_SILK_STRUCTS_FIX_H
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#include "SKP_Silk_typedef.h"
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#include "SKP_Silk_define_FIX.h"
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#include "SKP_Silk_main.h"
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#include "SKP_Silk_structs.h"
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#if LOW_COMPLEXITY_ONLY
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#include "SKP_Silk_resample_rom.h"
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#endif
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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/********************************/
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/* Noise shaping analysis state */
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/********************************/
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typedef struct {
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SKP_int LastGainIndex;
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SKP_int32 HarmBoost_smth_Q16;
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SKP_int32 HarmShapeGain_smth_Q16;
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SKP_int32 Tilt_smth_Q16;
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} SKP_Silk_shape_state_FIX;
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/********************************/
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/* Prefilter state */
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/********************************/
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typedef struct {
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SKP_int16 sLTP_shp1[ LTP_BUF_LENGTH ];
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SKP_int32 sAR_shp2_Q14[ SHAPE_LPC_ORDER_MAX ];
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SKP_int16 sLTP_shp2_FIX[ LTP_BUF_LENGTH ];
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SKP_int sLTP_shp_buf_idx1;
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SKP_int sAR_shp_buf_idx2;
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SKP_int sLTP_shp_buf_idx2;
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SKP_int32 sLF_AR_shp1_Q12;
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SKP_int32 sLF_MA_shp1_Q12;
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SKP_int32 sLF_AR_shp2_Q12;
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SKP_int32 sLF_MA_shp2_Q12;
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SKP_int sHarmHP;
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SKP_int32 rand_seed;
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SKP_int lagPrev;
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} SKP_Silk_prefilter_state_FIX;
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/*****************************/
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/* Prediction analysis state */
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/*****************************/
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typedef struct {
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SKP_int pitch_LPC_win_length;
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SKP_int min_pitch_lag; /* Lowest possible pitch lag (samples) */
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SKP_int max_pitch_lag; /* Highest possible pitch lag (samples) */
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SKP_int prev_NLSFq_Q15[ MAX_LPC_ORDER ]; /* Prev. quant. normalized LSF vector */
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} SKP_Silk_predict_state_FIX;
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#if( defined( SAVE_ALL_INTERNAL_DATA ) || defined( USE_FLT2FIX_WRAPPER ) )
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/*******************************************/
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/* Structure containing NLSF MSVQ codebook */
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/*******************************************/
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/* structure for one stage of MSVQ */
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typedef struct {
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const SKP_int32 nVectors;
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const SKP_float *CB;
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const SKP_float *Rates;
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} SKP_Silk_NLSF_CBS_FLP_TMP;
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typedef struct {
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const SKP_int32 nStages;
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/* fields for (de)quantizing */
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const SKP_Silk_NLSF_CBS_FLP_TMP *CBStages;
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const SKP_float *NDeltaMin;
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/* fields for arithmetic (de)coding */
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const SKP_uint16 *CDF;
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const SKP_uint16 * const *StartPtr;
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const SKP_int *MiddleIx;
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} SKP_Silk_NLSF_CB_struct_FLP_TMP;
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#endif
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/********************************/
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/* Encoder state FIX */
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/********************************/
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typedef struct {
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SKP_Silk_encoder_state sCmn; /* Common struct, shared with floating-point code */
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#if HIGH_PASS_INPUT
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SKP_int32 variable_HP_smth1_Q15; /* State of first smoother */
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SKP_int32 variable_HP_smth2_Q15; /* State of second smoother */
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#endif
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SKP_Silk_shape_state_FIX sShape; /* Shape state */
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SKP_Silk_prefilter_state_FIX sPrefilt; /* Prefilter State */
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SKP_Silk_predict_state_FIX sPred; /* Prediction state */
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SKP_Silk_nsq_state sNSQ; /* Noise Shape Quantizer State */
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SKP_Silk_nsq_state sNSQ_LBRR; /* Noise Shape Quantizer State ( for low bitrate redundancy ) */
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/* Function pointer to noise shaping quantizer (will be set to SKP_Silk_NSQ or SKP_Silk_NSQ_del_dec) */
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void (* NoiseShapingQuantizer)( SKP_Silk_encoder_state *, SKP_Silk_encoder_control *, SKP_Silk_nsq_state *, const SKP_int16 *,
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SKP_int *, const SKP_int, const SKP_int16 *, const SKP_int16 *, const SKP_int16 *, const SKP_int *,
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const SKP_int *, const SKP_int32 *, const SKP_int32 *, SKP_int, const SKP_int
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);
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/* Buffer for find pitch and noise shape analysis */
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SKP_array_of_int16_4_byte_aligned( x_buf, 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX );
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SKP_int LTPCorr_Q15; /* Normalized correlation from pitch lag estimator */
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SKP_int mu_LTP_Q8; /* Rate-distortion tradeoff in LTP quantization */
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SKP_int32 SNR_dB_Q7; /* Quality setting */
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SKP_int32 avgGain_Q16; /* average gain during active speech */
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SKP_int32 avgGain_Q16_one_bit_per_sample; /* average gain during active speech */
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SKP_int BufferedInChannel_ms; /* Simulated number of ms buffer because of exceeded TargetRate_bps */
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SKP_int speech_activity_Q8; /* Speech activity in Q8 */
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SKP_int32 pitchEstimationThreshold_Q16; /* Threshold for pitch estimator */
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/* Parameters For LTP scaling Control */
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SKP_int prevLTPredCodGain_Q7;
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SKP_int HPLTPredCodGain_Q7;
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SKP_int32 inBandFEC_SNR_comp_Q8; /* Compensation to SNR_dB when using inband FEC Voiced */
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#ifdef USE_FLT2FIX_WRAPPER
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const SKP_Silk_NLSF_CB_struct_FLP_TMP *psNLSF_CB_FLP[ 2 ]; /* Pointers to voiced/unvoiced NLSF codebooks */
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#endif
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} SKP_Silk_encoder_state_FIX;
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/************************/
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/* Encoder control FIX */
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/************************/
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typedef struct {
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SKP_Silk_encoder_control sCmn; /* Common struct, shared with floating-point code */
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/* Prediction and coding parameters */
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SKP_int32 Gains_Q16[ NB_SUBFR ];
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SKP_array_of_int16_4_byte_aligned( PredCoef_Q12[ 2 ], MAX_LPC_ORDER );
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SKP_int16 LTPCoef_Q14[ LTP_ORDER * NB_SUBFR ];
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SKP_int LTP_scale_Q14;
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/* Noise shaping parameters */
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/* Testing */
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SKP_array_of_int16_4_byte_aligned( AR1_Q13, NB_SUBFR * SHAPE_LPC_ORDER_MAX );
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SKP_array_of_int16_4_byte_aligned( AR2_Q13, NB_SUBFR * SHAPE_LPC_ORDER_MAX );
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SKP_int32 LF_shp_Q14[ NB_SUBFR ]; /* Packs two int16 coefficients per int32 value */
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SKP_int GainsPre_Q14[ NB_SUBFR ];
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SKP_int HarmBoost_Q14[ NB_SUBFR ];
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SKP_int Tilt_Q14[ NB_SUBFR ];
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SKP_int HarmShapeGain_Q14[ NB_SUBFR ];
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SKP_int Lambda_Q10;
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SKP_int input_quality_Q14;
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SKP_int coding_quality_Q14;
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SKP_int32 pitch_freq_low_Hz;
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SKP_int current_SNR_dB_Q7;
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/* measures */
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SKP_int sparseness_Q8;
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SKP_int LTPredCodGain_Q7;
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SKP_int input_quality_bands_Q15[ VAD_N_BANDS ];
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SKP_int input_tilt_Q15;
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SKP_int32 ResNrg[ NB_SUBFR ]; /* Residual energy per subframe */
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SKP_int ResNrgQ[ NB_SUBFR ]; /* Q domain for the residual energy > 0 */
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} SKP_Silk_encoder_control_FIX;
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#ifdef __cplusplus
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}
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#endif
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#endif
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