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git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@418 d0543943-73ff-0310-b7d9-9358b9ac24b2
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Anthony Minessale committed 2006-01-20 02:02:03 +00:00
1 parent 1e04eb13b5
commit 0ea203849f
43 files changed
+3940 -4103
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src/mod/codecs/mod_g729/mod_g729.c
+171 -137
View File
@@ -28,142 +28,176 @@
*
* mod_codec_g729.c -- G729 Codec Module
*
*/
*/
#include "switch.h"
#include "g729.h"
␍static const char modname[] = "mod_codec_g729";
␍␍struct g729_context {
␍struct dec_state decoder_object;
␍struct cod_state encoder_object;
␍};
␍␍static switch_status switch_g729_init(switch_codec *codec, switch_codec_flag flags,
const struct switch_codec_settings *codec_settings)
{
␍struct g729_context *context = NULL;
␍int encoding, decoding;
␍␍encoding = (flags & SWITCH_CODEC_FLAG_ENCODE);
␍decoding = (flags & SWITCH_CODEC_FLAG_DECODE);
␍␍if (!(encoding || decoding) || (!(context = switch_core_alloc(codec->memory_pool, sizeof(struct g729_context))))) {
␍return SWITCH_STATUS_FALSE;
␍} else {
␍if (encoding) {
␍g729_init_coder(&context->encoder_object, 0);
␍}
␍if (decoding) {
␍g729_init_decoder(&context->decoder_object);
␍}
␍␍codec->private = context;
␍␍return SWITCH_STATUS_SUCCESS;
␍}
␍}
␍␍static switch_status switch_g729_destroy(switch_codec *codec)
{
␍codec->private = NULL;
␍return SWITCH_STATUS_SUCCESS;
␍}
␍␍␍static switch_status switch_g729_encode(switch_codec *codec, ␍switch_codec *other_codec, ␍void *decoded_data,
␍size_t decoded_data_len, ␍int decoded_rate, ␍void *encoded_data,
␍size_t *encoded_data_len, ␍int *encoded_rate, ␍unsigned int *flag)
{
␍struct g729_context *context = codec->private;
␍int cbret = 0;
␍␍if (!context) {
␍return SWITCH_STATUS_FALSE;
␍}
␍if (decoded_data_len % 160 == 0) {
␍unsigned int new_len = 0;
␍INT16 * ddp = decoded_data;
␍char *edp = encoded_data;
␍int x;
␍int loops = (int) decoded_data_len / 160;
␍␍for (x = 0; x < loops && new_len < *encoded_data_len; x++) {
␍g729_coder(&context->encoder_object, ddp, edp, &cbret);
␍edp += 10;
␍ddp += 80;
␍new_len += 10;
␍}
␍if (new_len <= *encoded_data_len) {
␍*encoded_data_len = new_len;
␍} else {
␍switch_console_printf(SWITCH_CHANNEL_CONSOLE, "buffer overflow!!! %u >= %u\n", new_len, *encoded_data_len);
␍return SWITCH_STATUS_FALSE;
␍}
␍}
␍return SWITCH_STATUS_SUCCESS;
␍}
␍␍␍static switch_status switch_g729_decode(switch_codec *codec, ␍switch_codec *other_codec, ␍void *encoded_data,
␍size_t encoded_data_len, ␍int encoded_rate, ␍void *decoded_data,
␍size_t *decoded_data_len, ␍int *decoded_rate, ␍unsigned int *flag)
{
␍struct g729_context *context = codec->private;
␍␍if (!context) {
␍return SWITCH_STATUS_FALSE;
␍}
␍␍␍if (encoded_data_len % 10 == 0) {
␍int loops = (int) encoded_data_len / 10;
␍char *edp = encoded_data;
␍short *ddp = decoded_data;
␍int x;
␍unsigned int new_len = 0;
␍for (x = 0; x < loops && new_len < *decoded_data_len; x++) {
␍g729_decoder(&context->decoder_object, ddp, edp, 10);
␍ddp += 80;
␍edp += 10;
␍new_len += 160;
␍}
␍if (new_len <= *decoded_data_len) {
␍*decoded_data_len = new_len;
␍} else {
␍switch_console_printf(SWITCH_CHANNEL_CONSOLE, "buffer overflow!!!\n");
␍return SWITCH_STATUS_FALSE;
␍}
␍} else {
␍switch_console_printf(SWITCH_CHANNEL_CONSOLE, "yo this frame is an odd size [%d]\n", encoded_data_len);
␍}
␍␍␍return SWITCH_STATUS_SUCCESS;
␍}
␍
/* Registration */
␍static const switch_codec_implementation g729_8k_implementation = {
/*.samples_per_second */ 8000,
/*.bits_per_second */ 64000,
/*.microseconds_per_frame */ 20000,
/*.samples_per_frame */ 160,
/*.bytes_per_frame */ 320,
/*.encoded_bytes_per_frame */ 20,
/*.number_of_channels */ 1,
/*.pref_frames_per_packet */ 1,
/*.max_frames_per_packet */ 24,
/*.init */ switch_g729_init,
/*.encode */ switch_g729_encode,
/*.decode */ switch_g729_decode,
/*.destroy */ switch_g729_destroy,
};
␍␍static const switch_codec_interface g729_codec_interface = {
/*.interface_name */ "g729",
/*.codec_type */ SWITCH_CODEC_TYPE_AUDIO,
/*.ianacode */ 18,
/*.iananame */ "G729",
/*.implementations */ &g729_8k_implementation,
};
␍␍static switch_loadable_module_interface g729_module_interface = {
/*.module_name */ modname,
/*.endpoint_interface */ NULL,
/*.timer_interface */ NULL,
/*.dialplan_interface */ NULL,
/*.codec_interface */ &g729_codec_interface,
/*.application_interface */ NULL
};
␍␍␍SWITCH_MOD_DECLARE(switch_status) switch_module_load(const switch_loadable_module_interface **interface,
char *filename)
{
/* connect my internal structure to the blank pointer passed to me */
*interface = &g729_module_interface;
␍
/* indicate that the module should continue to be loaded */
return SWITCH_STATUS_SUCCESS;
␍}
␍␍␍␍␍
static const char modname[] = "mod_codec_g729";
struct g729_context {
struct dec_state decoder_object;
struct cod_state encoder_object;
};
static switch_status switch_g729_init(switch_codec *codec, switch_codec_flag flags, const struct switch_codec_settings *codec_settings)
{
struct g729_context *context = NULL;
int encoding, decoding;
encoding = (flags & SWITCH_CODEC_FLAG_ENCODE);
decoding = (flags & SWITCH_CODEC_FLAG_DECODE);
if (!(encoding || decoding) || (!(context = switch_core_alloc(codec->memory_pool, sizeof(struct g729_context))))) {
return SWITCH_STATUS_FALSE;
} else {
if (encoding) {
g729_init_coder(&context->encoder_object, 0);
}
if (decoding) {
g729_init_decoder(&context->decoder_object);
}
codec->private = context;
return SWITCH_STATUS_SUCCESS;
}
}
static switch_status switch_g729_destroy(switch_codec *codec)
{
codec->private = NULL;
return SWITCH_STATUS_SUCCESS;
}
static switch_status switch_g729_encode(switch_codec *codec,
switch_codec *other_codec,
void *decoded_data,
size_t decoded_data_len,
int decoded_rate,
void *encoded_data,
size_t *encoded_data_len,
int *encoded_rate,
unsigned int *flag)
{
struct g729_context *context = codec->private;
int cbret = 0;
if (!context) {
return SWITCH_STATUS_FALSE;
}
if (decoded_data_len % 160 == 0) {
unsigned int new_len = 0;
INT16 *ddp = decoded_data;
char *edp = encoded_data;
int x;
int loops = (int) decoded_data_len / 160;
for(x = 0; x < loops && new_len < *encoded_data_len; x++) {
g729_coder(&context->encoder_object, ddp, edp, &cbret);
edp += 10;
ddp += 80;
new_len += 10;
}
if( new_len <= *encoded_data_len ) {
*encoded_data_len = new_len;
} else {
switch_console_printf(SWITCH_CHANNEL_CONSOLE, "buffer overflow!!! %u >= %u\n", new_len, *encoded_data_len);
return SWITCH_STATUS_FALSE;
}
}
return SWITCH_STATUS_SUCCESS;
}
static switch_status switch_g729_decode(switch_codec *codec,
switch_codec *other_codec,
void *encoded_data,
size_t encoded_data_len,
int encoded_rate,
void *decoded_data,
size_t *decoded_data_len,
int *decoded_rate,
unsigned int *flag)
{
struct g729_context *context = codec->private;
if (!context) {
return SWITCH_STATUS_FALSE;
}
if (encoded_data_len % 10 == 0) {
int loops = (int) encoded_data_len / 10;
char *edp = encoded_data;
short *ddp = decoded_data;
int x;
unsigned int new_len = 0;
for(x = 0; x < loops && new_len < *decoded_data_len; x++) {
g729_decoder(&context->decoder_object, ddp, edp, 10);
ddp += 80;
edp += 10;
new_len += 160;
}
if (new_len <= *decoded_data_len) {
*decoded_data_len = new_len;
} else {
switch_console_printf(SWITCH_CHANNEL_CONSOLE, "buffer overflow!!!\n");
return SWITCH_STATUS_FALSE;
}
} else {
switch_console_printf(SWITCH_CHANNEL_CONSOLE, "yo this frame is an odd size [%d]\n", encoded_data_len);
}
return SWITCH_STATUS_SUCCESS;
}
/* Registration */
static const switch_codec_implementation g729_8k_implementation = {
/*.samples_per_second*/ 8000,
/*.bits_per_second*/ 64000,
/*.microseconds_per_frame*/ 20000,
/*.samples_per_frame*/ 160,
/*.bytes_per_frame*/ 320,
/*.encoded_bytes_per_frame*/ 20,
/*.number_of_channels*/ 1,
/*.pref_frames_per_packet*/ 1,
/*.max_frames_per_packet*/ 24,
/*.init*/ switch_g729_init,
/*.encode*/ switch_g729_encode,
/*.decode*/ switch_g729_decode,
/*.destroy*/ switch_g729_destroy,
};
static const switch_codec_interface g729_codec_interface = {
/*.interface_name*/ "g729",
/*.codec_type*/ SWITCH_CODEC_TYPE_AUDIO,
/*.ianacode*/ 18,
/*.iananame*/ "G729",
/*.implementations*/ &g729_8k_implementation,
};
static switch_loadable_module_interface g729_module_interface = {
/*.module_name*/ modname,
/*.endpoint_interface*/ NULL,
/*.timer_interface*/ NULL,
/*.dialplan_interface*/ NULL,
/*.codec_interface*/ &g729_codec_interface,
/*.application_interface*/ NULL
};
SWITCH_MOD_DECLARE(switch_status) switch_module_load(const switch_loadable_module_interface **interface, char *filename) {
/* connect my internal structure to the blank pointer passed to me */
*interface = &g729_module_interface;
/* indicate that the module should continue to be loaded */
return SWITCH_STATUS_SUCCESS;
}