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codec improvement

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git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@114 d0543943-73ff-0310-b7d9-9358b9ac24b2
This commit is contained in:
Anthony Minessale committed 2005-12-12 17:50:07 +00:00
1 parent 0ad907ea46
commit 6fd5a33dbf
7 files changed
+63 -21
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src/mod/mod_codec_g729/mod_codec_g729.c
+45 -16
View File
@@ -84,11 +84,26 @@ static switch_status switch_g729_encode(switch_codec *codec,
if (!context) {
return SWITCH_STATUS_FALSE;
}
g729_coder(&context->encoder_object, (short *) decoded_data, encoded_data, &cbret);
*encoded_data_len = codec->implementation->encoded_bytes_per_frame;
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;
}
@@ -102,21 +117,35 @@ static switch_status switch_g729_decode(switch_codec *codec,
unsigned int *flag)
{
struct g729_context *context = codec->private;
short *dbuf;
unsigned char *ebuf;
if (!context) {
return SWITCH_STATUS_FALSE;
}
if (*flag & SWITCH_CODEC_FLAG_SILENCE) {
memset(dbuf, 0, codec->implementation->bytes_per_frame);
*decoded_data_len = codec->implementation->bytes_per_frame;
} else {
g729_decoder(&context->decoder_object, decoded_data, encoded_data, encoded_data_len);
*decoded_data_len = codec->implementation->bytes_per_frame;
}
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;
}
@@ -130,7 +159,7 @@ static const switch_codec_implementation g729_8k_implementation = {
/*.bytes_per_frame*/ 320,
/*.encoded_bytes_per_frame*/ 20,
/*.number_of_channels*/ 1,
/*.pref_frames_per_packet*/ 6,
/*.pref_frames_per_packet*/ 1,
/*.max_frames_per_packet*/ 24,
/*.init*/ switch_g729_init,
/*.encode*/ switch_g729_encode,