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freeswitch/src/mod/applications/mod_spandsp/mod_spandsp_codecs.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 / G722 codec module
*
* The Initial Developer of the Original Code is
* Brian K. West <brian@freeswitch.org>
* Portions created by the Initial Developer are Copyright (C)
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Brian K. West <brian@freeswitch.org>
* Anthony Minessale II <anthm@freeswitch.org>
* Michael Jerris <mike@jerris.com>
*
* mod_spandsp_codecs.c -- VoIP Codecs (G.711, G.722, G.726, GSM-FR, IMA_ADPCM, LPC10)
*
* This module wouldn't be possible without generous contributions from Steve Underwood. Thanks!
*
*/
#include "mod_spandsp.h"
#if SWITCH_MAX_INTERVAL >= 90
/* LPC10 - START */
struct lpc10_context {
lpc10_encode_state_t *encoder_object;
lpc10_decode_state_t *decoder_object;
};
static switch_status_t switch_lpc10_init(switch_codec_t *codec, switch_codec_flag_t flags, const switch_codec_settings_t *codec_settings)
{
uint32_t encoding, decoding;
struct lpc10_context *context = NULL;
encoding = (flags & SWITCH_CODEC_FLAG_ENCODE);
decoding = (flags & SWITCH_CODEC_FLAG_DECODE);
if (!(encoding || decoding) || (!(context = switch_core_alloc(codec->memory_pool, sizeof(struct lpc10_context))))) {
return SWITCH_STATUS_FALSE;
} else {
if (encoding) {
context->encoder_object = lpc10_encode_init(context->encoder_object, TRUE);
}
if (decoding) {
context->decoder_object = lpc10_decode_init(context->decoder_object, TRUE);
}
codec->private_info = context;
return SWITCH_STATUS_SUCCESS;
}
}
static switch_status_t switch_lpc10_destroy(switch_codec_t *codec)
{
struct lpc10_context *context = codec->private_info;
codec->private_info = NULL;
if (!context) {
return SWITCH_STATUS_FALSE;
}
if (context->encoder_object)
lpc10_encode_free(context->encoder_object);
context->encoder_object = NULL;
if (context->decoder_object)
lpc10_decode_free(context->decoder_object);
context->decoder_object = NULL;
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_lpc10_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 lpc10_context *context = codec->private_info;
if (!context) {
return SWITCH_STATUS_FALSE;
}
*encoded_data_len = lpc10_encode(context->encoder_object, (uint8_t *) encoded_data, (int16_t *) decoded_data, decoded_data_len / 2);
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_lpc10_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 lpc10_context *context = codec->private_info;
if (!context) {
return SWITCH_STATUS_FALSE;
}
*decoded_data_len = (2 * lpc10_decode(context->decoder_object, (int16_t *) decoded_data, (uint8_t *) encoded_data, encoded_data_len));
return SWITCH_STATUS_SUCCESS;
}
/* LPC10 - END */
#endif
/* GSM - START */
struct gsm_context {
gsm0610_state_t *decoder_object;
gsm0610_state_t *encoder_object;
};
static switch_status_t switch_gsm_init(switch_codec_t *codec, switch_codec_flag_t flags, const switch_codec_settings_t *codec_settings)
{
uint32_t encoding, decoding;
struct gsm_context *context = NULL;
encoding = (flags & SWITCH_CODEC_FLAG_ENCODE);
decoding = (flags & SWITCH_CODEC_FLAG_DECODE);
if (!(encoding || decoding) || (!(context = switch_core_alloc(codec->memory_pool, sizeof(*context))))) {
return SWITCH_STATUS_FALSE;
} else {
if (encoding) {
context->encoder_object = gsm0610_init(context->encoder_object, GSM0610_PACKING_VOIP);
}
if (decoding) {
context->decoder_object = gsm0610_init(context->decoder_object, GSM0610_PACKING_VOIP);
}
codec->private_info = context;
return SWITCH_STATUS_SUCCESS;
}
}
static switch_status_t switch_gsm_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 gsm_context *context = codec->private_info;
if (!context) {
return SWITCH_STATUS_FALSE;
}
*encoded_data_len = gsm0610_encode(context->encoder_object, (uint8_t *) encoded_data, (int16_t *) decoded_data, decoded_data_len / 2);
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_gsm_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 gsm_context *context = codec->private_info;
if (!context) {
return SWITCH_STATUS_FALSE;
}
*decoded_data_len = (2 * gsm0610_decode(context->decoder_object, (int16_t *) decoded_data, (uint8_t *) encoded_data, encoded_data_len));
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_gsm_destroy(switch_codec_t *codec)
{
struct gsm_context *context = codec->private_info;
codec->private_info = NULL;
if (!context) {
return SWITCH_STATUS_FALSE;
}
if (context->decoder_object)
gsm0610_free(context->decoder_object);
context->decoder_object = NULL;
if (context->encoder_object)
gsm0610_free(context->encoder_object);
context->encoder_object = NULL;
return SWITCH_STATUS_SUCCESS;
}
/* GSM - END */
#ifdef ENABLE_G711
/* G711 - START */
static switch_status_t switch_g711u_init(switch_codec_t *codec, switch_codec_flag_t flags, const switch_codec_settings_t *codec_settings)
{
uint32_t 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)
{
uint32_t 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;
}
/* G711 - END */
#endif
/* G722 - START */
struct g722_context {
g722_decode_state_t *decoder_object;
g722_encode_state_t *encoder_object;
};
static switch_status_t switch_g722_init(switch_codec_t *codec, switch_codec_flag_t flags, const switch_codec_settings_t *codec_settings)
{
uint32_t encoding, decoding;
struct g722_context *context = NULL;
encoding = (flags & SWITCH_CODEC_FLAG_ENCODE);
decoding = (flags & SWITCH_CODEC_FLAG_DECODE);
if (!(encoding || decoding) || (!(context = switch_core_alloc(codec->memory_pool, sizeof(struct g722_context))))) {
return SWITCH_STATUS_FALSE;
} else {
if (encoding) {
context->encoder_object = g722_encode_init(context->encoder_object, 64000, G722_PACKED);
}
if (decoding) {
context->decoder_object = g722_decode_init(context->decoder_object, 64000, G722_PACKED);
}
}
codec->private_info = context;
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_g722_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 g722_context *context = codec->private_info;
if (!context) {
return SWITCH_STATUS_FALSE;
}
*encoded_data_len = g722_encode(context->encoder_object, (uint8_t *) encoded_data, (int16_t *) decoded_data, decoded_data_len / 2);
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_g722_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 g722_context *context = codec->private_info;
if (!context) {
return SWITCH_STATUS_FALSE;
}
*decoded_data_len = (2 * g722_decode(context->decoder_object, (int16_t *) decoded_data, (uint8_t *) encoded_data, encoded_data_len));
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_g722_destroy(switch_codec_t *codec)
{
struct g722_context *context = codec->private_info;
codec->private_info = NULL;
if (!context) {
return SWITCH_STATUS_FALSE;
}
if (context->decoder_object)
g722_decode_free(context->decoder_object);
context->decoder_object = NULL;
if (context->encoder_object)
g722_encode_free(context->encoder_object);
context->encoder_object = NULL;
return SWITCH_STATUS_SUCCESS;
}
/* G722 - END */
/* G726 - START */
static switch_status_t switch_g726_init(switch_codec_t *codec, switch_codec_flag_t flags, const switch_codec_settings_t *codec_settings)
{
uint32_t encoding, decoding;
int packing = G726_PACKING_RIGHT;
g726_state_t *context = NULL;
encoding = (flags & SWITCH_CODEC_FLAG_ENCODE);
decoding = (flags & SWITCH_CODEC_FLAG_DECODE);
if (!(encoding || decoding)) {
return SWITCH_STATUS_FALSE;
}
if (flags & SWITCH_CODEC_FLAG_AAL2 || strstr(codec->implementation->iananame, "AAL2")) {
packing = G726_PACKING_LEFT;
}
context = g726_init(context, codec->implementation->bits_per_second, G726_ENCODING_LINEAR, packing);
codec->private_info = context;
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_g726_destroy(switch_codec_t *codec)
{
g726_state_t *context = codec->private_info;
if (!context) {
return SWITCH_STATUS_FALSE;
}
g726_free(context);
codec->private_info = NULL;
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_g726_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)
{
g726_state_t *context = codec->private_info;
if (!context) {
return SWITCH_STATUS_FALSE;
}
*encoded_data_len = g726_encode(context, (uint8_t *) encoded_data, (int16_t *) decoded_data, decoded_data_len / 2);
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_g726_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)
{
g726_state_t *context = codec->private_info;
if (!context) {
return SWITCH_STATUS_FALSE;
}
*decoded_data_len = (2 * g726_decode(context, (int16_t *) decoded_data, (uint8_t *) encoded_data, encoded_data_len));
return SWITCH_STATUS_SUCCESS;
}
/* G726 - START */
/* IMA_ADPCM - START */
struct ima_adpcm_context {
ima_adpcm_state_t *decoder_object;
ima_adpcm_state_t *encoder_object;
};
static switch_status_t switch_adpcm_init(switch_codec_t *codec, switch_codec_flag_t flags, const switch_codec_settings_t *codec_settings)
{
uint32_t encoding, decoding;
struct ima_adpcm_context *context = NULL;
encoding = (flags & SWITCH_CODEC_FLAG_ENCODE);
decoding = (flags & SWITCH_CODEC_FLAG_DECODE);
if (!(encoding || decoding) || (!(context = switch_core_alloc(codec->memory_pool, sizeof(*context))))) {
return SWITCH_STATUS_FALSE;
} else {
if (encoding) {
context->encoder_object = ima_adpcm_init(context->encoder_object, IMA_ADPCM_DVI4, 0);
}
if (decoding) {
context->decoder_object = ima_adpcm_init(context->decoder_object, IMA_ADPCM_DVI4, 0);
}
codec->private_info = context;
return SWITCH_STATUS_SUCCESS;
}
}
static switch_status_t switch_adpcm_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 ima_adpcm_context *context = codec->private_info;
if (!context) {
return SWITCH_STATUS_FALSE;
}
*encoded_data_len = ima_adpcm_encode(context->encoder_object, (uint8_t *) encoded_data, (int16_t *) decoded_data, decoded_data_len / 2);
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_adpcm_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 ima_adpcm_context *context = codec->private_info;
if (!context) {
return SWITCH_STATUS_FALSE;
}
*decoded_data_len = (2 * ima_adpcm_decode(context->decoder_object, (int16_t *) decoded_data, (uint8_t *) encoded_data, encoded_data_len));
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_adpcm_destroy(switch_codec_t *codec)
{
struct ima_adpcm_context *context = codec->private_info;
codec->private_info = NULL;
if (!context) {
return SWITCH_STATUS_FALSE;
}
if (context->decoder_object)
ima_adpcm_free(context->decoder_object);
context->decoder_object = NULL;
if (context->encoder_object)
ima_adpcm_free(context->encoder_object);
context->encoder_object = NULL;
return SWITCH_STATUS_SUCCESS;
}
/* IMA_ADPCM - END */
switch_status_t mod_spandsp_codecs_load(switch_loadable_module_interface_t **module_interface, switch_memory_pool_t *pool)
{
switch_codec_interface_t *codec_interface;
int mpf, spf, bpf, ebpf, count;
/* IMA_ADPCM */
mpf = 10000, spf = 80, bpf = 160, ebpf = 80;
SWITCH_ADD_CODEC(codec_interface, "ADPCM (IMA)");
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 */
5, /* the IANA code number */
"DVI4", /* 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 */
32000, /* 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) + 4, /* number of bytes per frame compressed */
1, /* number of channels represented */
spf * count, /* number of frames per network packet */
switch_adpcm_init, /* function to initialize a codec handle using this implementation */
switch_adpcm_encode, /* function to encode raw data into encoded data */
switch_adpcm_decode, /* function to decode encoded data into raw data */
switch_adpcm_destroy); /* deinitalize a codec handle using this implementation */
}
mpf = 10000, spf = 160, bpf = 320, ebpf = 160;
for (count = 6; count > 0; count--) {
switch_core_codec_add_implementation(pool, codec_interface, SWITCH_CODEC_TYPE_AUDIO, /* enumeration defining the type of the codec */
6, /* the IANA code number */
"DVI4", /* 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 */
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) + 4, /* number of bytes per frame compressed */
1, /* number of channels represented */
spf * count, /* number of frames per network packet */
switch_adpcm_init, /* function to initialize a codec handle using this implementation */
switch_adpcm_encode, /* function to encode raw data into encoded data */
switch_adpcm_decode, /* function to decode encoded data into raw data */
switch_adpcm_destroy); /* deinitalize a codec handle using this implementation */
}
/* G726 */
mpf = 10000, spf = 80, bpf = 160, ebpf = 20;
SWITCH_ADD_CODEC(codec_interface, "G.726 16k (AAL2)");
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 */
124, /* the IANA code number */
"AAL2-G726-16", /* 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 */
16000, /* 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 */
count * 10, /* number of frames per network packet */
switch_g726_init, /* function to initialize a codec handle using this implementation */
switch_g726_encode, /* function to encode raw data into encoded data */
switch_g726_decode, /* function to decode encoded data into raw data */
switch_g726_destroy); /* deinitalize a codec handle using this implementation */
}
SWITCH_ADD_CODEC(codec_interface, "G.726 16k");
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 */
124, /* the IANA code number */
"G726-16", /* 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 */
16000, /* 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 */
count * 10, /* number of frames per network packet */
switch_g726_init, /* function to initialize a codec handle using this implementation */
switch_g726_encode, /* function to encode raw data into encoded data */
switch_g726_decode, /* function to decode encoded data into raw data */
switch_g726_destroy); /* deinitalize a codec handle using this implementation */
}
/* Increase encoded bytes per frame by 10 */
ebpf = ebpf + 10;
SWITCH_ADD_CODEC(codec_interface, "G.726 24k (AAL2)");
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 */
123, /* the IANA code number */
"AAL2-G726-24", /* 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 */
24000, /* 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 */
count * 10, /* number of frames per network packet */
switch_g726_init, /* function to initialize a codec handle using this implementation */
switch_g726_encode, /* function to encode raw data into encoded data */
switch_g726_decode, /* function to decode encoded data into raw data */
switch_g726_destroy); /* deinitalize a codec handle using this implementation */
}
SWITCH_ADD_CODEC(codec_interface, "G.726 24k");
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 */
123, /* the IANA code number */
"G726-24", /* 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 */
24000, /* 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 */
count * 10, /* number of frames per network packet */
switch_g726_init, /* function to initialize a codec handle using this implementation */
switch_g726_encode, /* function to encode raw data into encoded data */
switch_g726_decode, /* function to decode encoded data into raw data */
switch_g726_destroy); /* deinitalize a codec handle using this implementation */
}
/* Increase encoded bytes per frame by 10 */
ebpf = ebpf + 10;
SWITCH_ADD_CODEC(codec_interface, "G.726 32k (AAL2)");
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 */
122, /* the IANA code number */
"AAL2-G726-32", /* 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 */
32000, /* 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 */
count * 10, /* number of frames per network packet */
switch_g726_init, /* function to initialize a codec handle using this implementation */
switch_g726_encode, /* function to encode raw data into encoded data */
switch_g726_decode, /* function to decode encoded data into raw data */
switch_g726_destroy); /* deinitalize a codec handle using this implementation */
}
SWITCH_ADD_CODEC(codec_interface, "G.726 32k");
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 */
122, /* the IANA code number */
"G726-32", /* 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 */
32000, /* 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 */
count * 10, /* number of frames per network packet */
switch_g726_init, /* function to initialize a codec handle using this implementation */
switch_g726_encode, /* function to encode raw data into encoded data */
switch_g726_decode, /* function to decode encoded data into raw data */
switch_g726_destroy); /* deinitalize a codec handle using this implementation */
}
/* Increase encoded bytes per frame by 10 */
ebpf = ebpf + 10;
SWITCH_ADD_CODEC(codec_interface, "G.726 40k (AAL2)");
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 */
121, /* the IANA code number */
"AAL2-G726-40", /* 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 */
40000, /* 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 */
count * 10, /* number of frames per network packet */
switch_g726_init, /* function to initialize a codec handle using this implementation */
switch_g726_encode, /* function to encode raw data into encoded data */
switch_g726_decode, /* function to decode encoded data into raw data */
switch_g726_destroy); /* deinitalize a codec handle using this implementation */
}
SWITCH_ADD_CODEC(codec_interface, "G.726 40k");
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 */
121, /* the IANA code number */
"G726-40", /* 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 */
40000, /* 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 */
count * 10, /* number of frames per network packet */
switch_g726_init, /* function to initialize a codec handle using this implementation */
switch_g726_encode, /* function to encode raw data into encoded data */
switch_g726_decode, /* function to decode encoded data into raw data */
switch_g726_destroy); /* deinitalize a codec handle using this implementation */
}
/* G722 */
mpf = 10000, spf = 80, bpf = 320, ebpf = 80;
SWITCH_ADD_CODEC(codec_interface, "G.722");
for (count = 6; count > 0; count--) {
switch_core_codec_add_implementation(pool, codec_interface, SWITCH_CODEC_TYPE_AUDIO, /* enumeration defining the type of the codec */
9, /* the IANA code number */
"G722", /* the IANA code name */
NULL, /* default fmtp to send (can be overridden by the init function) */
8000, /* samples transferred per second */
16000, /* 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_g722_init, /* function to initialize a codec handle using this implementation */
switch_g722_encode, /* function to encode raw data into encoded data */
switch_g722_decode, /* function to decode encoded data into raw data */
switch_g722_destroy); /* deinitalize a codec handle using this implementation */
}
#ifdef ENABLE_G711
/* G711 */
mpf = 10000, spf = 80, bpf = 160, ebpf = 80;
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 */
}
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 */
}
#endif
/* GSM */
mpf = 20000, spf = 160, bpf = 320, ebpf = 33;
SWITCH_ADD_CODEC(codec_interface, "GSM");
for (count = 6; count > 0; count--) {
switch_core_codec_add_implementation(pool, codec_interface, SWITCH_CODEC_TYPE_AUDIO, /* enumeration defining the type of the codec */
3, /* the IANA code number */
"GSM", /* 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 */
13200, /* 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 */
count, /* number of frames per network packet */
switch_gsm_init, /* function to initialize a codec handle using this implementation */
switch_gsm_encode, /* function to encode raw data into encoded data */
switch_gsm_decode, /* function to decode encoded data into raw data */
switch_gsm_destroy); /* deinitalize a codec handle using this implementation */
}
/* LPC10 */
#if SWITCH_MAX_INTERVAL >= 90
SWITCH_ADD_CODEC(codec_interface, "LPC-10");
switch_core_codec_add_implementation(pool, codec_interface, SWITCH_CODEC_TYPE_AUDIO, /* enumeration defining the type of the codec */
7, /* the IANA code number */
"LPC", /* 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 */
2400, /* bits transferred per second */
90000, /* number of microseconds per frame */
720, /* number of samples per frame */
1440, /* number of bytes per frame decompressed */
28, /* number of bytes per frame compressed */
1, /* number of channels represented */
4, /* number of frames per network packet */
switch_lpc10_init, /* function to initialize a codec handle using this implementation */
switch_lpc10_encode, /* function to encode raw data into encoded data */
switch_lpc10_decode, /* function to decode encoded data into raw data */
switch_lpc10_destroy); /* deinitalize a codec handle using this implementation */
#endif
/* 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 noet:
*/
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