kenmirrors
/
freeswitch
mirror of https://github.com/signalwire/freeswitch.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

delay init of resources until the first time they are actually used to avoid unnecessary waste of resources in hardware codec 

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@12962 d0543943-73ff-0310-b7d9-9358b9ac24b2
This commit is contained in:
Anthony Minessale 2009-04-09 17:40:19 +00:00
parent 68b0359cfb
commit 615932e161
1 changed files with 73 additions and 38 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

111
src/mod/codecs/mod_dahdi_codec/mod_dahdi_codec.c
View File

@ -117,11 +117,63 @@ static int32_t switch_dahdi_get_transcoder(struct dahdi_transcoder_formats *fmts
return fd;
}
static switch_status_t init_encoder(switch_codec_t *codec)
{
struct dahdi_transcoder_formats fmts;
struct dahdi_context *context = codec->private_info;
fmts.srcfmt = DAHDI_FORMAT_ULAW;
fmts.dstfmt = (codec->implementation->ianacode == CODEC_G729_IANA_CODE)
? DAHDI_FORMAT_G729A : DAHDI_FORMAT_G723_1;
context->encoding_fd = switch_dahdi_get_transcoder(&fmts);
if (context->decoding_fd < 0) {
#ifdef DEBUG_DAHDI_CODEC
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "encoding requested and denied with %d/%d.\n",
fmts.srcfmt, fmts.dstfmt);
#endif
return SWITCH_STATUS_FALSE;
}
/* ulaw requires 8 times more storage than g729 and 12 times more than G723, right? */
context->codec_r = (codec->implementation->ianacode == CODEC_G729_IANA_CODE)
? 8 : 12;
#ifdef DEBUG_DAHDI_CODEC
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Encoding requested and granted with %d/%d.\n",
fmts.srcfmt, fmts.dstfmt);
#endif
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t init_decoder(switch_codec_t *codec)
{
struct dahdi_transcoder_formats fmts;
struct dahdi_context *context = codec->private_info;
fmts.dstfmt = DAHDI_FORMAT_ULAW;
fmts.srcfmt = (codec->implementation->ianacode == CODEC_G729_IANA_CODE)
? DAHDI_FORMAT_G729A : DAHDI_FORMAT_G723_1;
context->decoding_fd = switch_dahdi_get_transcoder(&fmts);
if (context->decoding_fd < 0) {
#ifdef DEBUG_DAHDI_CODEC
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Decoding requested and denied with %d/%d.\n",
fmts.srcfmt, fmts.dstfmt);
#endif
return SWITCH_STATUS_FALSE;
}
#ifdef DEBUG_DAHDI_CODEC
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Decoding requested and granted with %d/%d.\n",
fmts.srcfmt, fmts.dstfmt);
#endif
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_dahdi_init(switch_codec_t *codec, switch_codec_flag_t flags, const switch_codec_settings_t *codec_settings)
{
uint32_t encoding, decoding;
struct dahdi_context *context = NULL;
struct dahdi_transcoder_formats fmts;
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Switch DAHDI init called.\n");
encoding = (flags & SWITCH_CODEC_FLAG_ENCODE);
@ -141,44 +193,10 @@ static switch_status_t switch_dahdi_init(switch_codec_t *codec, switch_codec_fla
return SWITCH_STATUS_FALSE;
}
if (encoding) {
fmts.srcfmt = DAHDI_FORMAT_ULAW;
fmts.dstfmt = (codec->implementation->ianacode == CODEC_G729_IANA_CODE)
? DAHDI_FORMAT_G729A : DAHDI_FORMAT_G723_1;
context->encoding_fd = switch_dahdi_get_transcoder(&fmts);
if (context->decoding_fd < 0) {
#ifdef DEBUG_DAHDI_CODEC
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "encoding requested and denied with %d/%d.\n",
fmts.srcfmt, fmts.dstfmt);
#endif
return SWITCH_STATUS_FALSE;
}
/* ulaw requires 8 times more storage than g729 and 12 times more than G723, right? */
context->codec_r = (codec->implementation->ianacode == CODEC_G729_IANA_CODE)
? 8 : 12;
#ifdef DEBUG_DAHDI_CODEC
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Encoding requested and granted with %d/%d.\n",
fmts.srcfmt, fmts.dstfmt);
#endif
}
if (decoding) {
fmts.dstfmt = DAHDI_FORMAT_ULAW;
fmts.srcfmt = (codec->implementation->ianacode == CODEC_G729_IANA_CODE)
? DAHDI_FORMAT_G729A : DAHDI_FORMAT_G723_1;
context->decoding_fd = switch_dahdi_get_transcoder(&fmts);
if (context->decoding_fd < 0) {
#ifdef DEBUG_DAHDI_CODEC
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Decoding requested and denied with %d/%d.\n",
fmts.srcfmt, fmts.dstfmt);
#endif
return SWITCH_STATUS_FALSE;
}
#ifdef DEBUG_DAHDI_CODEC
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Decoding requested and granted with %d/%d.\n",
fmts.srcfmt, fmts.dstfmt);
#endif
}
codec->private_info = context;
context->encoding_fd = -1;
context->decoding_fd = -1;
return SWITCH_STATUS_SUCCESS;
}
@ -195,10 +213,19 @@ static switch_status_t switch_dahdi_encode(switch_codec_t *codec,
unsigned char ebuf_ulaw[decoded_data_len/2];
uint32_t i;
struct dahdi_context *context = NULL;
switch_status_t status;
#ifdef DEBUG_DAHDI_CODEC
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Switch DAHDI encode called to encode %d bytes.\n", decoded_data_len);
#endif
context = codec->private_info;
if (context->encoding_fd == -1) {
if ((status = init_encoder(codec)) != SWITCH_STATUS_SUCCESS) {
return status;
}
}
dbuf_linear = decoded_data;
ebuf_g729 = encoded_data;
for (i = 0; i < decoded_data_len / sizeof(short); i++) {
@ -245,6 +272,8 @@ static switch_status_t switch_dahdi_decode(switch_codec_t *codec,
unsigned char *ebuf_g729;
uint32_t i;
struct dahdi_context *context;
switch_status_t status;
#ifdef DEBUG_DAHDI_CODEC
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Switch DAHDI decode called to decode %d bytes.\n", encoded_data_len);
#endif
@ -253,6 +282,12 @@ static switch_status_t switch_dahdi_decode(switch_codec_t *codec,
dbuf_linear = decoded_data;
ebuf_g729 = encoded_data;
if (context->decoding_fd == -1) {
if ((status = init_decoder(codec)) != SWITCH_STATUS_SUCCESS) {
return status;
}
}
if (*flag & SWITCH_CODEC_FLAG_SILENCE) {
memset(dbuf_linear, 0, codec->implementation->decoded_bytes_per_packet);
*decoded_data_len = codec->implementation->decoded_bytes_per_packet;