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[mod_opus] add cfg setting to overwrite the fmtp stereo param coming from remote. Eg: incoming SDP has stereo=1 but we want a mono call so we answer with stereo=0.

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* [mod_opus] add cfg setting to overwrite the fmtp stereo param coming from remote. Eg: incoming SDP has stereo=1 but we want a mono call so we answer with stereo=0.
sprop-stereo will be set to 0 too.

* [core] opus: use switch_core_max_audio_channels() with remote fmtp stereo=1 to allow disabling of stereo.
This commit is contained in:
Dragos Oancea
2021-05-14 18:36:30 +03:00
committed by GitHub
parent 53a52e1571
commit a562db760c
4 changed files with 21 additions and 4 deletions
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10
src/mod/codecs/mod_opus/mod_opus.c
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@@ -160,6 +160,7 @@ struct {
int debuginfo;
uint32_t use_jb_lookahead;
switch_mutex_t *mutex;
int mono;
} opus_prefs;
static struct {
@@ -283,7 +284,7 @@ static switch_status_t switch_opus_fmtp_parse(const char *fmtp, switch_codec_fmt
}
if (!strcasecmp(data, "stereo")) {
codec_settings->stereo = atoi(arg);
codec_settings->stereo = opus_prefs.mono ? 0 : atoi(arg);
codec_fmtp->stereo = codec_settings->stereo;
}
@@ -563,6 +564,11 @@ static switch_status_t switch_opus_init(switch_codec_t *codec, switch_codec_flag
opus_codec_settings.usedtx = opus_prefs.use_dtx;
if (opus_prefs.mono) {
opus_codec_settings.stereo = 0;
opus_codec_settings.sprop_stereo = 0;
}
codec->fmtp_out = gen_fmtp(&opus_codec_settings, codec->memory_pool);
if (encoding) {
@@ -1080,6 +1086,8 @@ static switch_status_t opus_load_config(switch_bool_t reload)
if (!switch_opus_acceptable_rate(opus_prefs.sprop_maxcapturerate)) {
opus_prefs.sprop_maxcapturerate = 0; /* value not supported */
}
} else if (!strcasecmp(key, "mono")) {
opus_prefs.mono = atoi(val);
}
}
}