ben.carrasco/freeswitch
1
0 Fork 0
mirror of https://github.com/signalwire/freeswitch.git synced 2026-10-27 05:34:17 +00:00
Code Issues Packages Projects Releases Wiki Activity

freetdm: saturated add and pri tapping mixing

Browse Source
This commit is contained in:
Moises Silva committed 2010-08-01 03:02:53 -04:00
1 parent 9327c99488
commit e0b1ea7faa
4 files changed
+84 -3
Download Patch File Download Diff File Expand all files Collapse all files

No files matched your search

libs/freetdm/src/ftmod/ftmod_pritap/ftmod_pritap.c
+54
View File
@@ -749,6 +749,59 @@ static ftdm_status_t ftdm_pritap_stop(ftdm_span_t *span)
return FTDM_SUCCESS;
}
static ftdm_status_t ftdm_pritap_sig_read(ftdm_channel_t *ftdmchan, void *data, ftdm_size_t size)
{
ftdm_status_t status;
fio_codec_t codec_func;
ftdm_channel_t *peerchan = ftdmchan->call_data;
int16_t peerbuf[size];
int16_t chanbuf[size];
int16_t mixedbuf[size];
int i = 0;
ftdm_size_t sizeread = size;
if (!FTDM_IS_VOICE_CHANNEL(ftdmchan) || !ftdmchan->call_data) {
return FTDM_SUCCESS;
}
if (ftdmchan->native_codec != peerchan->native_codec) {
ftdm_log_chan(ftdmchan, FTDM_LOG_CRIT, "Invalid peer channel with format %d, ours = %d\n",
peerchan->native_codec, ftdmchan->native_codec);
return FTDM_FAIL;
}
memcpy(chanbuf, data, size);
status = peerchan->fio->read(ftdmchan->call_data, peerbuf, &sizeread);
if (status != FTDM_SUCCESS) {
ftdm_log_chan_msg(ftdmchan, FTDM_LOG_ERROR, "Failed to read from peer channel!\n");
return FTDM_FAIL;
}
if (sizeread != size) {
ftdm_log_chan(ftdmchan, FTDM_LOG_ERROR, "read from peer channel only %d bytes!\n", sizeread);
return FTDM_FAIL;
}
codec_func = peerchan->native_codec == FTDM_CODEC_ULAW ? fio_ulaw2slin : peerchan->native_codec == FTDM_CODEC_ALAW ? fio_alaw2slin : NULL;
if (codec_func) {
codec_func(peerbuf, sizeof(peerbuf), &sizeread);
sizeread = size;
codec_func(chanbuf, sizeof(chanbuf), &sizeread);
}
for (i = 0; i < size; i++) {
mixedbuf[i] = ftdm_saturated_add(chanbuf[i], peerbuf[i]);
}
codec_func = peerchan->native_codec == FTDM_CODEC_ULAW ? fio_slin2ulaw : peerchan->native_codec == FTDM_CODEC_ALAW ? fio_slin2alaw : NULL;
if (codec_func) {
codec_func(data, size, &size);
} else {
memcpy(data, mixedbuf, sizeof(mixedbuf));
}
return FTDM_SUCCESS;
}
static ftdm_status_t ftdm_pritap_start(ftdm_span_t *span)
{
ftdm_status_t ret;
@@ -832,6 +885,7 @@ static FIO_CONFIGURE_SPAN_SIGNALING_FUNCTION(ftdm_pritap_configure_span)
span->start = ftdm_pritap_start;
span->stop = ftdm_pritap_stop;
span->sig_read = ftdm_pritap_sig_read;
span->signal_cb = sig_cb;
span->signal_data = pritap;