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git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@2431 d0543943-73ff-0310-b7d9-9358b9ac24b2
This commit is contained in:
Brian West 2006-08-29 20:31:01 +00:00
parent 884cfc4465
commit b4f50d092e
1 changed files with 162 additions and 81 deletions
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243
src/mod/codecs/mod_g726/mod_g726.c
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@ -38,12 +38,12 @@ static switch_status_t switch_g726_init(switch_codec_t *codec, switch_codec_flag
const switch_codec_settings_t *codec_settings)
{
int encoding, decoding;
struct g726_state_s *context = NULL;
g726_state *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 g726_state_s))))) {
if (!(encoding || decoding) || (!(context = switch_core_alloc(codec->memory_pool, sizeof(g726_state))))) {
return SWITCH_STATUS_FALSE;
} else {
g726_init_state(context);
@ -59,69 +59,150 @@ static switch_status_t switch_g726_destroy(switch_codec_t *codec)
return SWITCH_STATUS_SUCCESS;
}
#define define_encoder(func, coder, datalen)\
static switch_status_t func(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 g726_state_s *context = codec->private_info;\
\
if (!context) {\
return SWITCH_STATUS_FALSE;\
}\
\
if (decoded_data_len % datalen == 0) {\
coder(*(int *)decoded_data , AUDIO_ENCODING_LINEAR, context);\
}\
\
return SWITCH_STATUS_SUCCESS;\
}\
typedef int (*encoder_t)(int, int, g726_state *);
typedef int (*decoder_t)(int, int, g726_state *);
#define define_decoder(func, coder, datalen)\
static switch_status_t func(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 g726_state_s *context = codec->private_info;\
\
if (!context) {\
return SWITCH_STATUS_FALSE;\
}\
\
if (encoded_data_len % datalen == 0) {\
coder(*(int *)encoded_data, AUDIO_ENCODING_LINEAR, context);\
}\
\
return SWITCH_STATUS_SUCCESS;\
}\
static switch_status_t switch_g726_encode(switch_codec_t *codec,
switch_codec_t *other_codec,
void *decoded_data,
define_encoder(switch_g726_16k_encode, g726_16_encoder, 160)
define_decoder(switch_g726_16k_decode, g726_16_decoder, 40)
uint32_t decoded_data_len,
uint32_t decoded_rate,
void *encoded_data,
define_encoder(switch_g726_24k_encode, g726_24_encoder, 160)
define_decoder(switch_g726_24k_decode, g726_24_decoder, 60)
uint32_t *encoded_data_len,
uint32_t *encoded_rate,
unsigned int *flag)
{
define_encoder(switch_g726_32k_encode, g726_32_encoder, 160)
define_decoder(switch_g726_32k_decode, g726_32_decoder, 80)
g726_state *context = codec->private_info;
uint32_t len = codec->implementation->bytes_per_frame;
uint32_t elen = codec->implementation->encoded_bytes_per_frame;
encoder_t encoder;
switch(elen) {
case 100:
encoder = g726_40_encoder;
break;
case 80:
encoder = g726_32_encoder;
break;
case 60:
encoder = g726_24_encoder;
break;
case 40:
encoder = g726_16_encoder;
break;
default:
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "invalid Encoding Size %d!\n", elen);
return SWITCH_STATUS_FALSE;
break;
}
if (!context) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Error!\n");
return SWITCH_STATUS_FALSE;
}
if (decoded_data_len % len == 0) {
uint32_t new_len = 0;
int16_t *ddp = decoded_data;
int8_t *edp = encoded_data;
int x;
uint32_t loops = decoded_data_len / (sizeof(*ddp));
for (x = 0; x < loops && new_len < *encoded_data_len; x++) {
int sample = encoder(*ddp, AUDIO_ENCODING_LINEAR, context);
*edp = sample;
edp++;
ddp++;
new_len++;
}
if (new_len <= *encoded_data_len) {
printf("encode %d->%d %d\n", decoded_data_len, elen, new_len / 2);
*encoded_data_len = new_len / 2;
} else {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "buffer overflow!!! %u >= %u\n", new_len, *encoded_data_len);
return SWITCH_STATUS_FALSE;
}
}
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 *context = codec->private_info;
uint32_t len = codec->implementation->bytes_per_frame;
uint32_t elen = codec->implementation->encoded_bytes_per_frame;
decoder_t decoder;
switch(elen) {
case 40:
decoder = g726_40_decoder;
break;
case 32:
decoder = g726_32_decoder;
break;
case 24:
decoder = g726_24_decoder;
break;
case 16:
decoder = g726_16_decoder;
break;
default:
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "invalid Encoding Size!\n");
return SWITCH_STATUS_FALSE;
break;
}
if (!context) {
return SWITCH_STATUS_FALSE;
}
if (encoded_data_len % elen == 0) {
int loops = (int) encoded_data_len / elen;
char *edp = encoded_data;
int16_t *ddp = decoded_data;
int x;
uint32_t new_len = 0;
for (x = 0; x < loops && new_len < *decoded_data_len; x++) {
*(int16_t *)ddp = decoder(*(int *)edp, AUDIO_ENCODING_LINEAR, context);
ddp += len;
edp += elen;
new_len += len;
}
if (new_len <= *decoded_data_len) {
*decoded_data_len = new_len;
} else {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "buffer overflow!!!\n");
return SWITCH_STATUS_FALSE;
}
}
return SWITCH_STATUS_SUCCESS;
}
define_encoder(switch_g726_40k_encode, g726_40_encoder, 160)
define_decoder(switch_g726_40k_decode, g726_40_decoder, 100)
/* Registration */
@ -131,17 +212,17 @@ static const switch_codec_implementation_t g726_16k_implementation = {
/*.ianacode */ 2,
/*.iananame */ "G726-16",
/*.samples_per_second */ 8000,
/*.bits_per_second */ 16000,
/*.bits_per_second */ 8000,
/*.microseconds_per_frame */ 20000,
/*.samples_per_frame */ 160,
/*.bytes_per_frame */ 40,
/*.encoded_bytes_per_frame */ 10,
/*.bytes_per_frame */ 320,
/*.encoded_bytes_per_frame */ 40,
/*.number_of_channels */ 1,
/*.pref_frames_per_packet */ 1,
/*.max_frames_per_packet */ 1,
/*.init */ switch_g726_init,
/*.encode */ switch_g726_16k_encode,
/*.decode */ switch_g726_16k_decode,
/*.encode */ switch_g726_encode,
/*.decode */ switch_g726_decode,
/*.destroy */ switch_g726_destroy,
};
@ -151,17 +232,17 @@ static const switch_codec_implementation_t g726_24k_implementation = {
/*.ianacode */ 2,
/*.iananame */ "G726-24",
/*.samples_per_second */ 8000,
/*.bits_per_second */ 24000,
/*.bits_per_second */ 12075,
/*.microseconds_per_frame */ 20000,
/*.samples_per_frame */ 160,
/*.bytes_per_frame */ 60,
/*.encoded_bytes_per_frame */ 10,
/*.bytes_per_frame */ 320,
/*.encoded_bytes_per_frame */ 60,
/*.number_of_channels */ 1,
/*.pref_frames_per_packet */ 1,
/*.max_frames_per_packet */ 1,
/*.init */ switch_g726_init,
/*.encode */ switch_g726_24k_encode,
/*.decode */ switch_g726_24k_decode,
/*.encode */ switch_g726_encode,
/*.decode */ switch_g726_decode,
/*.destroy */ switch_g726_destroy,
};
@ -170,17 +251,17 @@ static const switch_codec_implementation_t g726_32k_implementation = {
/*.ianacode */ 2,
/*.iananame */ "G726-32",
/*.samples_per_second */ 8000,
/*.bits_per_second */ 32000,
/*.bits_per_second */ 16000,
/*.microseconds_per_frame */ 20000,
/*.samples_per_frame */ 160,
/*.bytes_per_frame */ 80,
/*.encoded_bytes_per_frame */ 10,
/*.bytes_per_frame */ 320,
/*.encoded_bytes_per_frame */ 80,
/*.number_of_channels */ 1,
/*.pref_frames_per_packet */ 1,
/*.max_frames_per_packet */ 1,
/*.init */ switch_g726_init,
/*.encode */ switch_g726_32k_encode,
/*.decode */ switch_g726_32k_decode,
/*.encode */ switch_g726_encode,
/*.decode */ switch_g726_decode,
/*.destroy */ switch_g726_destroy,
};
@ -188,18 +269,18 @@ static const switch_codec_implementation_t g726_40k_implementation = {
/*.codec_type */ SWITCH_CODEC_TYPE_AUDIO,
/*.ianacode */ 2,
/*.iananame */ "G726-40",
/*.samples_per_second */ 8000,
/*.bits_per_second */ 40000,
/*.samples_per_second */ 8000,
/*.bits_per_second */ 20000,
/*.microseconds_per_frame */ 20000,
/*.samples_per_frame */ 160,
/*.bytes_per_frame */ 100,
/*.encoded_bytes_per_frame */ 10,
/*.bytes_per_frame */ 320,
/*.encoded_bytes_per_frame */ 100,
/*.number_of_channels */ 1,
/*.pref_frames_per_packet */ 1,
/*.max_frames_per_packet */ 1,
/*.init */ switch_g726_init,
/*.encode */ switch_g726_40k_encode,
/*.decode */ switch_g726_40k_decode,
/*.encode */ switch_g726_encode,
/*.decode */ switch_g726_decode,
/*.destroy */ switch_g726_destroy,
};