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freeswitch/src/switch_pcm.c

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/*
* FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
* Copyright (C) 2005-2014, Anthony Minessale II <anthm@freeswitch.org>
*
* 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 / Soft-Switch Application
*
* The Initial Developer of the Original Code is
* Anthony Minessale II <anthm@freeswitch.org>
* Portions created by the Initial Developer are Copyright (C)
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Anthony Minessale II <anthm@freeswitch.org>
*
*
* switch_pcm.c -- Raw and Encoded PCM 16 bit Signed Linear
*
*/
#include <switch.h>
#include <g711.h>
#ifdef WIN32
#undef SWITCH_MOD_DECLARE_DATA
#define SWITCH_MOD_DECLARE_DATA __declspec(dllexport)
#endif
SWITCH_MODULE_LOAD_FUNCTION(core_pcm_load);
SWITCH_MODULE_SHUTDOWN_FUNCTION(core_pcm_shutdown);
SWITCH_MODULE_DEFINITION(CORE_PCM_MODULE, core_pcm_load, core_pcm_shutdown, NULL);
static switch_status_t switch_raw_init(switch_codec_t *codec, switch_codec_flag_t flags, const switch_codec_settings_t *codec_settings)
{
int encoding, decoding;
encoding = (flags & SWITCH_CODEC_FLAG_ENCODE);
decoding = (flags & SWITCH_CODEC_FLAG_DECODE);
if (!(encoding || decoding)) {
return SWITCH_STATUS_FALSE;
} else {
return SWITCH_STATUS_SUCCESS;
}
}
static switch_status_t switch_raw_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)
{
/* NOOP indicates that the audio in is already the same as the audio out, so no conversion was necessary. */
if (codec && other_codec && codec->implementation && other_codec->implementation &&
codec->implementation->actual_samples_per_second != other_codec->implementation->actual_samples_per_second) {
memcpy(encoded_data, decoded_data, decoded_data_len);
*encoded_data_len = decoded_data_len;
return SWITCH_STATUS_RESAMPLE;
}
return SWITCH_STATUS_NOOP;
}
static switch_status_t switch_raw_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)
{
if (codec && other_codec && codec->implementation && other_codec->implementation &&
codec->implementation->actual_samples_per_second != other_codec->implementation->actual_samples_per_second) {
memcpy(decoded_data, encoded_data, encoded_data_len);
*decoded_data_len = encoded_data_len;
return SWITCH_STATUS_RESAMPLE;
}
return SWITCH_STATUS_NOOP;
}
static switch_status_t switch_raw_destroy(switch_codec_t *codec)
{
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_proxy_init(switch_codec_t *codec, switch_codec_flag_t flags, const switch_codec_settings_t *codec_settings)
{
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_proxy_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)
{
return SWITCH_STATUS_FALSE;
}
static switch_status_t switch_proxy_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)
{
return SWITCH_STATUS_FALSE;
}
static switch_status_t switch_proxy_destroy(switch_codec_t *codec)
{
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_g711u_init(switch_codec_t *codec, switch_codec_flag_t flags, const switch_codec_settings_t *codec_settings)
{
int encoding, decoding;
encoding = (flags & SWITCH_CODEC_FLAG_ENCODE);
decoding = (flags & SWITCH_CODEC_FLAG_DECODE);
if (!(encoding || decoding)) {
return SWITCH_STATUS_FALSE;
} else {
return SWITCH_STATUS_SUCCESS;
}
}
static switch_status_t switch_g711u_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)
{
short *dbuf;
unsigned char *ebuf;
uint32_t i;
dbuf = decoded_data;
ebuf = encoded_data;
for (i = 0; i < decoded_data_len / sizeof(short); i++) {
ebuf[i] = linear_to_ulaw(dbuf[i]);
}
*encoded_data_len = i;
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_g711u_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)
{
short *dbuf;
unsigned char *ebuf;
uint32_t i;
dbuf = decoded_data;
ebuf = encoded_data;
if (*flag & SWITCH_CODEC_FLAG_SILENCE) {
memset(dbuf, 0, codec->implementation->decoded_bytes_per_packet);
*decoded_data_len = codec->implementation->decoded_bytes_per_packet;
} else {
for (i = 0; i < encoded_data_len; i++) {
dbuf[i] = ulaw_to_linear(ebuf[i]);
}
*decoded_data_len = i * 2;
}
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_g711u_destroy(switch_codec_t *codec)
{
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_g711a_init(switch_codec_t *codec, switch_codec_flag_t flags, const switch_codec_settings_t *codec_settings)
{
int encoding, decoding;
encoding = (flags & SWITCH_CODEC_FLAG_ENCODE);
decoding = (flags & SWITCH_CODEC_FLAG_DECODE);
if (!(encoding || decoding)) {
return SWITCH_STATUS_FALSE;
} else {
return SWITCH_STATUS_SUCCESS;
}
}
static switch_status_t switch_g711a_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)
{
short *dbuf;
unsigned char *ebuf;
uint32_t i;
dbuf = decoded_data;
ebuf = encoded_data;
for (i = 0; i < decoded_data_len / sizeof(short); i++) {
ebuf[i] = linear_to_alaw(dbuf[i]);
}
*encoded_data_len = i;
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_g711a_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)
{
short *dbuf;
unsigned char *ebuf;
uint32_t i;
dbuf = decoded_data;
ebuf = encoded_data;
if (*flag & SWITCH_CODEC_FLAG_SILENCE) {
memset(dbuf, 0, codec->implementation->decoded_bytes_per_packet);
*decoded_data_len = codec->implementation->decoded_bytes_per_packet;
} else {
for (i = 0; i < encoded_data_len; i++) {
dbuf[i] = alaw_to_linear(ebuf[i]);
}
*decoded_data_len = i * 2;
}
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_g711a_destroy(switch_codec_t *codec)
{
return SWITCH_STATUS_SUCCESS;
}
static void mod_g711_load(switch_loadable_module_interface_t ** module_interface, switch_memory_pool_t *pool)
{
switch_codec_interface_t *codec_interface;
int mpf = 10000, spf = 80, bpf = 160, ebpf = 80, count;
SWITCH_ADD_CODEC(codec_interface, "G.711 ulaw");
for (count = 12; count > 0; count--) {
switch_core_codec_add_implementation(pool, codec_interface, SWITCH_CODEC_TYPE_AUDIO, /* enumeration defining the type of the codec */
0, /* the IANA code number */
"PCMU", /* the IANA code name */
NULL, /* default fmtp to send (can be overridden by the init function) */
8000, /* samples transferred per second */
8000, /* actual samples transferred per second */
64000, /* bits transferred per second */
mpf * count, /* number of microseconds per frame */
spf * count, /* number of samples per frame */
bpf * count, /* number of bytes per frame decompressed */
ebpf * count, /* number of bytes per frame compressed */
1, /* number of channels represented */
spf * count, /* number of frames per network packet */
switch_g711u_init, /* function to initialize a codec handle using this implementation */
switch_g711u_encode, /* function to encode raw data into encoded data */
switch_g711u_decode, /* function to decode encoded data into raw data */
switch_g711u_destroy); /* deinitalize a codec handle using this implementation */
if (count > 4) continue;
switch_core_codec_add_implementation(pool, codec_interface, SWITCH_CODEC_TYPE_AUDIO, /* enumeration defining the type of the codec */
0, /* the IANA code number */
"PCMU", /* the IANA code name */
NULL, /* default fmtp to send (can be overridden by the init function) */
48000, /* samples transferred per second */
48000, /* actual samples transferred per second */
64000 * 6, /* bits transferred per second */
mpf * count, /* number of microseconds per frame */
spf * count * 6, /* number of samples per frame */
bpf * count * 6, /* number of bytes per frame decompressed */
ebpf * count * 6, /* number of bytes per frame compressed */
1, /* number of channels represented */
spf * count * 6, /* number of frames per network packet */
switch_g711u_init, /* function to initialize a codec handle using this implementation */
switch_g711u_encode, /* function to encode raw data into encoded data */
switch_g711u_decode, /* function to decode encoded data into raw data */
switch_g711u_destroy); /* deinitalize a codec handle using this implementation */
switch_core_codec_add_implementation(pool, codec_interface, SWITCH_CODEC_TYPE_AUDIO, /* enumeration defining the type of the codec */
0, /* the IANA code number */
"PCMU", /* the IANA code name */
NULL, /* default fmtp to send (can be overridden by the init function) */
48000, /* samples transferred per second */
48000, /* actual samples transferred per second */
64000 * 6 * 2, /* bits transferred per second */
mpf * count, /* number of microseconds per frame */
spf * count * 6, /* number of samples per frame */
bpf * count * 6 * 2, /* number of bytes per frame decompressed */
ebpf * count * 6 * 2, /* number of bytes per frame compressed */
2, /* number of channels represented */
spf * count * 6 * 2, /* number of frames per network packet */
switch_g711u_init, /* function to initialize a codec handle using this implementation */
switch_g711u_encode, /* function to encode raw data into encoded data */
switch_g711u_decode, /* function to decode encoded data into raw data */
switch_g711u_destroy); /* deinitalize a codec handle using this implementation */
}
SWITCH_ADD_CODEC(codec_interface, "G.711 alaw");
for (count = 12; count > 0; count--) {
switch_core_codec_add_implementation(pool, codec_interface, SWITCH_CODEC_TYPE_AUDIO, /* enumeration defining the type of the codec */
8, /* the IANA code number */
"PCMA", /* the IANA code name */
NULL, /* default fmtp to send (can be overridden by the init function) */
8000, /* samples transferred per second */
8000, /* actual samples transferred per second */
64000, /* bits transferred per second */
mpf * count, /* number of microseconds per frame */
spf * count, /* number of samples per frame */
bpf * count, /* number of bytes per frame decompressed */
ebpf * count, /* number of bytes per frame compressed */
1, /* number of channels represented */
spf * count, /* number of frames per network packet */
switch_g711a_init, /* function to initialize a codec handle using this implementation */
switch_g711a_encode, /* function to encode raw data into encoded data */
switch_g711a_decode, /* function to decode encoded data into raw data */
switch_g711a_destroy); /* deinitalize a codec handle using this implementation */
}
}
SWITCH_MODULE_LOAD_FUNCTION(core_pcm_load)
{
switch_codec_interface_t *codec_interface;
int mpf = 10000, spf = 80, bpf = 160, ebpf = 160, bps = 128000, rate = 8000, counta = 1, countb = 12;
int samples_per_frame, bytes_per_frame, ms_per_frame, x;
/* connect my internal structure to the blank pointer passed to me */
*module_interface = switch_loadable_module_create_module_interface(pool, modname);
SWITCH_ADD_CODEC(codec_interface, "PROXY VIDEO PASS-THROUGH");
switch_core_codec_add_implementation(pool, codec_interface, SWITCH_CODEC_TYPE_VIDEO, /* enumeration defining the type of the codec */
31, /* the IANA code number */
"PROXY-VID", /* the IANA code name */
NULL, /* default fmtp to send (can be overridden by the init function) */
90000, /* samples transferred per second */
90000, /* actual samples transferred per second */
0, /* bits transferred per second */
0, /* number of microseconds per frame */
0, /* number of samples per frame */
0, /* number of bytes per frame decompressed */
0, /* number of bytes per frame compressed */
1, /* number of channels represented */
1, /* number of frames per network packet */
switch_proxy_init, /* function to initialize a codec handle using this implementation */
switch_proxy_encode, /* function to encode raw data into encoded data */
switch_proxy_decode, /* function to encode raw data into encoded data */
switch_proxy_destroy); /* deinitalize a codec handle using this implementation */
SWITCH_ADD_CODEC(codec_interface, "PROXY PASS-THROUGH");
switch_core_codec_add_implementation(pool, codec_interface, SWITCH_CODEC_TYPE_AUDIO, /* enumeration defining the type of the codec */
0, /* the IANA code number */
"PROXY", /* the IANA code name */
NULL, /* default fmtp to send (can be overridden by the init function) */
8000, /* samples transferred per second */
8000, /* actual samples transferred per second */
0, /* bits transferred per second */
20000, /* number of microseconds per frame */
160, /* number of samples per frame */
320, /* number of bytes per frame decompressed */
320, /* number of bytes per frame compressed */
1, /* number of channels represented */
1, /* number of frames per network packet */
switch_proxy_init, /* function to initialize a codec handle using this implementation */
switch_proxy_encode, /* function to encode raw data into encoded data */
switch_proxy_decode, /* function to decode encoded data into raw data */
switch_proxy_destroy); /* deinitalize a codec handle using this implementation */
switch_core_codec_add_implementation(pool, codec_interface, SWITCH_CODEC_TYPE_AUDIO, /* enumeration defining the type of the codec */
0, /* the IANA code number */
"PROXY", /* the IANA code name */
NULL, /* default fmtp to send (can be overridden by the init function) */
8000, /* samples transferred per second */
8000, /* actual samples transferred per second */
0, /* bits transferred per second */
20000, /* number of microseconds per frame */
160, /* number of samples per frame */
320 * 2, /* number of bytes per frame decompressed */
320 * 2, /* number of bytes per frame compressed */
2, /* number of channels represented */
1, /* number of frames per network packet */
switch_proxy_init, /* function to initialize a codec handle using this implementation */
switch_proxy_encode, /* function to encode raw data into encoded data */
switch_proxy_decode, /* function to decode encoded data into raw data */
switch_proxy_destroy); /* deinitalize a codec handle using this implementation */
SWITCH_ADD_CODEC(codec_interface, "RAW Signed Linear (16 bit)");
for (counta = 1; counta <= 3; counta++) {
if (rate == 8000) {
countb = 12;
} else {
countb = 6;
}
for (; countb > 0; countb--) {
switch_core_codec_add_implementation(pool, codec_interface,
SWITCH_CODEC_TYPE_AUDIO, 100, "L16", NULL, rate, rate, bps,
mpf * countb, spf * countb, bpf * countb, ebpf * countb, 1, spf * countb,
switch_raw_init, switch_raw_encode, switch_raw_decode, switch_raw_destroy);
switch_core_codec_add_implementation(pool, codec_interface,
SWITCH_CODEC_TYPE_AUDIO, 100, "L16", NULL, rate, rate, bps,
mpf * countb, spf * countb, bpf * countb * 2, ebpf * countb, 2, spf * countb,
switch_raw_init, switch_raw_encode, switch_raw_decode, switch_raw_destroy);
}
rate = rate * 2;
bps = bps * 2;
spf = spf * 2;
bpf = bpf * 2;
ebpf = ebpf * 2;
}
samples_per_frame = 240;
bytes_per_frame = 480;
ms_per_frame = 20000;
for (x = 0; x < 5; x++) {
switch_core_codec_add_implementation(pool, codec_interface, SWITCH_CODEC_TYPE_AUDIO, /* enumeration defining the type of the codec */
100, /* the IANA code number */
"L16", /* the IANA code name */
NULL, /* default fmtp to send (can be overridden by the init function) */
12000, /* samples transferred per second */
12000, /* actual samples transferred per second */
192000, /* bits transferred per second */
ms_per_frame, /* number of microseconds per frame */
samples_per_frame, /* number of samples per frame */
bytes_per_frame, /* number of bytes per frame decompressed */
bytes_per_frame, /* number of bytes per frame compressed */
1, /* number of channels represented */
1, /* number of frames per network packet */
switch_raw_init, /* function to initialize a codec handle using this implementation */
switch_raw_encode, /* function to encode raw data into encoded data */
switch_raw_decode, /* function to decode encoded data into raw data */
switch_raw_destroy); /* deinitalize a codec handle using this implementation */
switch_core_codec_add_implementation(pool, codec_interface, SWITCH_CODEC_TYPE_AUDIO, /* enumeration defining the type of the codec */
100, /* the IANA code number */
"L16", /* the IANA code name */
NULL, /* default fmtp to send (can be overridden by the init function) */
12000, /* samples transferred per second */
12000, /* actual samples transferred per second */
192000 * 2, /* bits transferred per second */
ms_per_frame, /* number of microseconds per frame */
samples_per_frame, /* number of samples per frame */
bytes_per_frame * 2, /* number of bytes per frame decompressed */
bytes_per_frame * 2, /* number of bytes per frame compressed */
2, /* number of channels represented */
1, /* number of frames per network packet */
switch_raw_init, /* function to initialize a codec handle using this implementation */
switch_raw_encode, /* function to encode raw data into encoded data */
switch_raw_decode, /* function to decode encoded data into raw data */
switch_raw_destroy); /* deinitalize a codec handle using this implementation */
samples_per_frame += 240;
bytes_per_frame += 480;
ms_per_frame += 20000;
}
samples_per_frame = 480;
bytes_per_frame = 960;
ms_per_frame = 20000;
for (x = 0; x < 3; x++) {
switch_core_codec_add_implementation(pool, codec_interface, SWITCH_CODEC_TYPE_AUDIO, /* enumeration defining the type of the codec */
100, /* the IANA code number */
"L16", /* the IANA code name */
NULL, /* default fmtp to send (can be overridden by the init function) */
24000, /* samples transferred per second */
24000, /* actual samples transferred per second */
384000, /* bits transferred per second */
ms_per_frame, /* number of microseconds per frame */
samples_per_frame, /* number of samples per frame */
bytes_per_frame, /* number of bytes per frame decompressed */
bytes_per_frame, /* number of bytes per frame compressed */
1, /* number of channels represented */
1, /* number of frames per network packet */
switch_raw_init, /* function to initialize a codec handle using this implementation */
switch_raw_encode, /* function to encode raw data into encoded data */
switch_raw_decode, /* function to decode encoded data into raw data */
switch_raw_destroy); /* deinitalize a codec handle using this implementation */
switch_core_codec_add_implementation(pool, codec_interface, SWITCH_CODEC_TYPE_AUDIO, /* enumeration defining the type of the codec */
100, /* the IANA code number */
"L16", /* the IANA code name */
NULL, /* default fmtp to send (can be overridden by the init function) */
24000, /* samples transferred per second */
24000, /* actual samples transferred per second */
384000 * 2, /* bits transferred per second */
ms_per_frame, /* number of microseconds per frame */
samples_per_frame, /* number of samples per frame */
bytes_per_frame * 2, /* number of bytes per frame decompressed */
bytes_per_frame * 2, /* number of bytes per frame compressed */
2, /* number of channels represented */
1, /* number of frames per network packet */
switch_raw_init, /* function to initialize a codec handle using this implementation */
switch_raw_encode, /* function to encode raw data into encoded data */
switch_raw_decode, /* function to decode encoded data into raw data */
switch_raw_destroy); /* deinitalize a codec handle using this implementation */
samples_per_frame += 480;
bytes_per_frame += 960;
ms_per_frame += 20000;
}
/* these formats below are for file playing. */
samples_per_frame = 96;
bytes_per_frame = 192;
ms_per_frame = 2000;
for (x = 0; x < 5; x++) {
switch_core_codec_add_implementation(pool, codec_interface, SWITCH_CODEC_TYPE_AUDIO, /* enumeration defining the type of the codec */
100, /* the IANA code number */
"L16", /* the IANA code name */
NULL, /* default fmtp to send (can be overridden by the init function) */
48000, /* samples transferred per second */
48000, /* actual samples transferred per second */
768000, /* bits transferred per second */
ms_per_frame, /* number of microseconds per frame */
samples_per_frame, /* number of samples per frame */
bytes_per_frame, /* number of bytes per frame decompressed */
bytes_per_frame, /* number of bytes per frame compressed */
1, /* number of channels represented */
1, /* number of frames per network packet */
switch_raw_init, /* function to initialize a codec handle using this implementation */
switch_raw_encode, /* function to encode raw data into encoded data */
switch_raw_decode, /* function to decode encoded data into raw data */
switch_raw_destroy); /* deinitalize a codec handle using this implementation */
switch_core_codec_add_implementation(pool, codec_interface, SWITCH_CODEC_TYPE_AUDIO, /* enumeration defining the type of the codec */
100, /* the IANA code number */
"L16", /* the IANA code name */
NULL, /* default fmtp to send (can be overridden by the init function) */
48000, /* samples transferred per second */
48000, /* actual samples transferred per second */
768000 * 2, /* bits transferred per second */
ms_per_frame, /* number of microseconds per frame */
samples_per_frame, /* number of samples per frame */
bytes_per_frame * 2, /* number of bytes per frame decompressed */
bytes_per_frame * 2, /* number of bytes per frame compressed */
2, /* number of channels represented */
1, /* number of frames per network packet */
switch_raw_init, /* function to initialize a codec handle using this implementation */
switch_raw_encode, /* function to encode raw data into encoded data */
switch_raw_decode, /* function to decode encoded data into raw data */
switch_raw_destroy); /* deinitalize a codec handle using this implementation */
samples_per_frame += 96;
bytes_per_frame += 192;
ms_per_frame += 2000;
}
samples_per_frame = 16;
bytes_per_frame = 32;
ms_per_frame = 2000;
for (x = 0; x < 4; x++) {
switch_core_codec_add_implementation(pool, codec_interface, SWITCH_CODEC_TYPE_AUDIO, /* enumeration defining the type of the codec */
100, /* the IANA code number */
"L16", /* the IANA code name */
NULL, /* default fmtp to send (can be overridden by the init function) */
8000, /* samples transferred per second */
8000, /* actual samples transferred per second */
128000, /* bits transferred per second */
ms_per_frame, /* number of microseconds per frame */
samples_per_frame, /* number of samples per frame */
bytes_per_frame, /* number of bytes per frame decompressed */
bytes_per_frame, /* number of bytes per frame compressed */
1, /* number of channels represented */
1, /* number of frames per network packet */
switch_raw_init, /* function to initialize a codec handle using this implementation */
switch_raw_encode, /* function to encode raw data into encoded data */
switch_raw_decode, /* function to decode encoded data into raw data */
switch_raw_destroy); /* deinitalize a codec handle using this implementation */
switch_core_codec_add_implementation(pool, codec_interface, SWITCH_CODEC_TYPE_AUDIO, /* enumeration defining the type of the codec */
100, /* the IANA code number */
"L16", /* the IANA code name */
NULL, /* default fmtp to send (can be overridden by the init function) */
8000, /* samples transferred per second */
8000, /* actual samples transferred per second */
128000 * 2, /* bits transferred per second */
ms_per_frame, /* number of microseconds per frame */
samples_per_frame, /* number of samples per frame */
bytes_per_frame * 2, /* number of bytes per frame decompressed */
bytes_per_frame * 2, /* number of bytes per frame compressed */
2, /* number of channels represented */
1, /* number of frames per network packet */
switch_raw_init, /* function to initialize a codec handle using this implementation */
switch_raw_encode, /* function to encode raw data into encoded data */
switch_raw_decode, /* function to decode encoded data into raw data */
switch_raw_destroy); /* deinitalize a codec handle using this implementation */
samples_per_frame += 16;
bytes_per_frame += 32;
ms_per_frame += 2000;
}
samples_per_frame = 32;
bytes_per_frame = 64;
ms_per_frame = 2000;
for (x = 0; x < 4; x++) {
switch_core_codec_add_implementation(pool, codec_interface, SWITCH_CODEC_TYPE_AUDIO, /* enumeration defining the type of the codec */
100, /* the IANA code number */
"L16", /* the IANA code name */
NULL, /* default fmtp to send (can be overridden by the init function) */
16000, /* samples transferred per second */
16000, /* actual samples transferred per second */
256000, /* bits transferred per second */
ms_per_frame, /* number of microseconds per frame */
samples_per_frame, /* number of samples per frame */
bytes_per_frame, /* number of bytes per frame decompressed */
bytes_per_frame, /* number of bytes per frame compressed */
1, /* number of channels represented */
1, /* number of frames per network packet */
switch_raw_init, /* function to initialize a codec handle using this implementation */
switch_raw_encode, /* function to encode raw data into encoded data */
switch_raw_decode, /* function to decode encoded data into raw data */
switch_raw_destroy); /* deinitalize a codec handle using this implementation */
switch_core_codec_add_implementation(pool, codec_interface, SWITCH_CODEC_TYPE_AUDIO, /* enumeration defining the type of the codec */
100, /* the IANA code number */
"L16", /* the IANA code name */
NULL, /* default fmtp to send (can be overridden by the init function) */
16000, /* samples transferred per second */
16000, /* actual samples transferred per second */
256000 * 2, /* bits transferred per second */
ms_per_frame, /* number of microseconds per frame */
samples_per_frame, /* number of samples per frame */
bytes_per_frame * 2, /* number of bytes per frame decompressed */
bytes_per_frame * 2, /* number of bytes per frame compressed */
2, /* number of channels represented */
1, /* number of frames per network packet */
switch_raw_init, /* function to initialize a codec handle using this implementation */
switch_raw_encode, /* function to encode raw data into encoded data */
switch_raw_decode, /* function to decode encoded data into raw data */
switch_raw_destroy); /* deinitalize a codec handle using this implementation */
samples_per_frame += 32;
bytes_per_frame += 64;
ms_per_frame += 2000;
}
samples_per_frame = 64;
bytes_per_frame = 128;
ms_per_frame = 2000;
for (x = 0; x < 4; x++) {
switch_core_codec_add_implementation(pool, codec_interface, SWITCH_CODEC_TYPE_AUDIO, /* enumeration defining the type of the codec */
100, /* the IANA code number */
"L16", /* the IANA code name */
NULL, /* default fmtp to send (can be overridden by the init function) */
32000, /* samples transferred per second */
32000, /* actual samples transferred per second */
512000, /* bits transferred per second */
ms_per_frame, /* number of microseconds per frame */
samples_per_frame, /* number of samples per frame */
bytes_per_frame, /* number of bytes per frame decompressed */
bytes_per_frame, /* number of bytes per frame compressed */
1, /* number of channels represented */
1, /* number of frames per network packet */
switch_raw_init, /* function to initialize a codec handle using this implementation */
switch_raw_encode, /* function to encode raw data into encoded data */
switch_raw_decode, /* function to decode encoded data into raw data */
switch_raw_destroy); /* deinitalize a codec handle using this implementation */
switch_core_codec_add_implementation(pool, codec_interface, SWITCH_CODEC_TYPE_AUDIO, /* enumeration defining the type of the codec */
100, /* the IANA code number */
"L16", /* the IANA code name */
NULL, /* default fmtp to send (can be overridden by the init function) */
32000, /* samples transferred per second */
32000, /* actual samples transferred per second */
512000 * 2, /* bits transferred per second */
ms_per_frame, /* number of microseconds per frame */
samples_per_frame, /* number of samples per frame */
bytes_per_frame * 2, /* number of bytes per frame decompressed */
bytes_per_frame * 2, /* number of bytes per frame compressed */
2, /* number of channels represented */
1, /* number of frames per network packet */
switch_raw_init, /* function to initialize a codec handle using this implementation */
switch_raw_encode, /* function to encode raw data into encoded data */
switch_raw_decode, /* function to decode encoded data into raw data */
switch_raw_destroy); /* deinitalize a codec handle using this implementation */
samples_per_frame += 64;
bytes_per_frame += 128;
ms_per_frame += 2000;
}
samples_per_frame = 960;
bytes_per_frame = 1920;
ms_per_frame = 20000;
/* 10ms is already registered */
for (x = 0; x < 3; x++) {
switch_core_codec_add_implementation(pool, codec_interface, SWITCH_CODEC_TYPE_AUDIO, /* enumeration defining the type of the codec */
100, /* the IANA code number */
"L16", /* the IANA code name */
NULL, /* default fmtp to send (can be overridden by the init function) */
48000, /* samples transferred per second */
48000, /* actual samples transferred per second */
768000, /* bits transferred per second */
ms_per_frame, /* number of microseconds per frame */
samples_per_frame, /* number of samples per frame */
bytes_per_frame, /* number of bytes per frame decompressed */
bytes_per_frame, /* number of bytes per frame compressed */
1, /* number of channels represented */
1, /* number of frames per network packet */
switch_raw_init, /* function to initialize a codec handle using this implementation */
switch_raw_encode, /* function to encode raw data into encoded data */
switch_raw_decode, /* function to decode encoded data into raw data */
switch_raw_destroy); /* deinitalize a codec handle using this implementation */
switch_core_codec_add_implementation(pool, codec_interface, SWITCH_CODEC_TYPE_AUDIO, /* enumeration defining the type of the codec */
100, /* the IANA code number */
"L16", /* the IANA code name */
NULL, /* default fmtp to send (can be overridden by the init function) */
48000, /* samples transferred per second */
48000, /* actual samples transferred per second */
768000 * 2, /* bits transferred per second */
ms_per_frame, /* number of microseconds per frame */
samples_per_frame, /* number of samples per frame */
bytes_per_frame * 2, /* number of bytes per frame decompressed */
bytes_per_frame * 2, /* number of bytes per frame compressed */
2, /* number of channels represented */
1, /* number of frames per network packet */
switch_raw_init, /* function to initialize a codec handle using this implementation */
switch_raw_encode, /* function to encode raw data into encoded data */
switch_raw_decode, /* function to decode encoded data into raw data */
switch_raw_destroy); /* deinitalize a codec handle using this implementation */
samples_per_frame += 480;
bytes_per_frame += 960;
ms_per_frame += 10000;
}
samples_per_frame = 441;
bytes_per_frame = 882;
ms_per_frame = 10000;
for (x = 0; x < 3; x++) {
switch_core_codec_add_implementation(pool, codec_interface, SWITCH_CODEC_TYPE_AUDIO, /* enumeration defining the type of the codec */
100, /* the IANA code number */
"L16", /* the IANA code name */
NULL, /* default fmtp to send (can be overridden by the init function) */
44100, /* samples transferred per second */
44100, /* actual samples transferred per second */
705600, /* bits transferred per second */
ms_per_frame, /* number of microseconds per frame */
samples_per_frame, /* number of samples per frame */
bytes_per_frame, /* number of bytes per frame decompressed */
bytes_per_frame, /* number of bytes per frame compressed */
1, /* number of channels represented */
1, /* number of frames per network packet */
switch_raw_init, /* function to initialize a codec handle using this implementation */
switch_raw_encode, /* function to encode raw data into encoded data */
switch_raw_decode, /* function to decode encoded data into raw data */
switch_raw_destroy); /* deinitalize a codec handle using this implementation */
switch_core_codec_add_implementation(pool, codec_interface, SWITCH_CODEC_TYPE_AUDIO, /* enumeration defining the type of the codec */
100, /* the IANA code number */
"L16", /* the IANA code name */
NULL, /* default fmtp to send (can be overridden by the init function) */
44100, /* samples transferred per second */
44100, /* actual samples transferred per second */
705600, /* bits transferred per second */
ms_per_frame, /* number of microseconds per frame */
samples_per_frame, /* number of samples per frame */
bytes_per_frame * 2, /* number of bytes per frame decompressed */
bytes_per_frame * 2, /* number of bytes per frame compressed */
2, /* number of channels represented */
1, /* number of frames per network packet */
switch_raw_init, /* function to initialize a codec handle using this implementation */
switch_raw_encode, /* function to encode raw data into encoded data */
switch_raw_decode, /* function to decode encoded data into raw data */
switch_raw_destroy); /* deinitalize a codec handle using this implementation */
samples_per_frame += 441;
bytes_per_frame += 882;
ms_per_frame += 10000;
}
switch_core_codec_add_implementation(pool, codec_interface, SWITCH_CODEC_TYPE_AUDIO, /* enumeration defining the type of the codec */
100, /* the IANA code number */
"L16", /* the IANA code name */
NULL, /* default fmtp to send (can be overridden by the init function) */
22050, /* samples transferred per second */
22050, /* actual samples transferred per second */
352800, /* bits transferred per second */
20000, /* number of microseconds per frame */
441, /* number of samples per frame */
882, /* number of bytes per frame decompressed */
882, /* number of bytes per frame compressed */
1, /* number of channels represented */
1, /* number of frames per network packet */
switch_raw_init, /* function to initialize a codec handle using this implementation */
switch_raw_encode, /* function to encode raw data into encoded data */
switch_raw_decode, /* function to decode encoded data into raw data */
switch_raw_destroy); /* deinitalize a codec handle using this implementation */
switch_core_codec_add_implementation(pool, codec_interface, SWITCH_CODEC_TYPE_AUDIO, /* enumeration defining the type of the codec */
100, /* the IANA code number */
"L16", /* the IANA code name */
NULL, /* default fmtp to send (can be overridden by the init function) */
22050, /* samples transferred per second */
22050, /* actual samples transferred per second */
352800 * 2, /* bits transferred per second */
20000, /* number of microseconds per frame */
441, /* number of samples per frame */
882 * 2, /* number of bytes per frame decompressed */
882 * 2, /* number of bytes per frame compressed */
2, /* number of channels represented */
1, /* number of frames per network packet */
switch_raw_init, /* function to initialize a codec handle using this implementation */
switch_raw_encode, /* function to encode raw data into encoded data */
switch_raw_decode, /* function to decode encoded data into raw data */
switch_raw_destroy); /* deinitalize a codec handle using this implementation */
switch_core_codec_add_implementation(pool, codec_interface, SWITCH_CODEC_TYPE_AUDIO, /* enumeration defining the type of the codec */
100, /* the IANA code number */
"L16", /* the IANA code name */
NULL, /* default fmtp to send (can be overridden by the init function) */
11025, /* samples transferred per second */
11025, /* actual samples transferred per second */
176400, /* bits transferred per second */
40000, /* number of microseconds per frame */
441, /* number of samples per frame */
882, /* number of bytes per frame decompressed */
882, /* number of bytes per frame compressed */
1, /* number of channels represented */
1, /* number of frames per network packet */
switch_raw_init, /* function to initialize a codec handle using this implementation */
switch_raw_encode, /* function to encode raw data into encoded data */
switch_raw_decode, /* function to decode encoded data into raw data */
switch_raw_destroy); /* deinitalize a codec handle using this implementation */
switch_core_codec_add_implementation(pool, codec_interface, SWITCH_CODEC_TYPE_AUDIO, /* enumeration defining the type of the codec */
100, /* the IANA code number */
"L16", /* the IANA code name */
NULL, /* default fmtp to send (can be overridden by the init function) */
11025, /* samples transferred per second */
11025, /* actual samples transferred per second */
176400 * 2, /* bits transferred per second */
40000, /* number of microseconds per frame */
441, /* number of samples per frame */
882 * 2, /* number of bytes per frame decompressed */
882 * 2, /* number of bytes per frame compressed */
2, /* number of channels represented */
1, /* number of frames per network packet */
switch_raw_init, /* function to initialize a codec handle using this implementation */
switch_raw_encode, /* function to encode raw data into encoded data */
switch_raw_decode, /* function to decode encoded data into raw data */
switch_raw_destroy); /* deinitalize a codec handle using this implementation */
switch_core_codec_add_implementation(pool, codec_interface, SWITCH_CODEC_TYPE_AUDIO, /* enumeration defining the type of the codec */
100, /* the IANA code number */
"L16", /* the IANA code name */
NULL, /* default fmtp to send (can be overridden by the init function) */
11025, /* samples transferred per second */
11025, /* actual samples transferred per second */
176400, /* bits transferred per second */
32000, /* number of microseconds per frame */
256, /* number of samples per frame */
512, /* number of bytes per frame decompressed */
512, /* number of bytes per frame compressed */
1, /* number of channels represented */
1, /* number of frames per network packet */
switch_raw_init, /* function to initialize a codec handle using this implementation */
switch_raw_encode, /* function to encode raw data into encoded data */
switch_raw_decode, /* function to decode encoded data into raw data */
switch_raw_destroy); /* deinitalize a codec handle using this implementation */
switch_core_codec_add_implementation(pool, codec_interface, SWITCH_CODEC_TYPE_AUDIO, /* enumeration defining the type of the codec */
100, /* the IANA code number */
"L16", /* the IANA code name */
NULL, /* default fmtp to send (can be overridden by the init function) */
11025, /* samples transferred per second */
11025, /* actual samples transferred per second */
176400 * 2, /* bits transferred per second */
32000, /* number of microseconds per frame */
256, /* number of samples per frame */
512 * 2, /* number of bytes per frame decompressed */
512 * 2, /* number of bytes per frame compressed */
2, /* number of channels represented */
1, /* number of frames per network packet */
switch_raw_init, /* function to initialize a codec handle using this implementation */
switch_raw_encode, /* function to encode raw data into encoded data */
switch_raw_decode, /* function to decode encoded data into raw data */
switch_raw_destroy); /* deinitalize a codec handle using this implementation */
/* indicate that the module should continue to be loaded */
mod_g711_load(module_interface, pool);
return SWITCH_STATUS_SUCCESS;
//return SWITCH_STATUS_NOUNLOAD;
}
SWITCH_MODULE_SHUTDOWN_FUNCTION(core_pcm_shutdown)
{
return SWITCH_STATUS_NOUNLOAD;
}
/* 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 noet:
*/
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