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improve handling of legacy (buggy) opus payload type declarations: do not modify the local payload type.

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This commit is contained in:
Simon Morlat 2016-02-23 17:56:09 +01:00
parent 723c628996
commit fa7d1c1733
1 changed files with 8 additions and 4 deletions
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12
coreapi/offeranswer.c
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@ -35,7 +35,7 @@ static bool_t only_telephone_event(const MSList *l){
static PayloadType * opus_match(MSOfferAnswerContext *ctx, const MSList *local_payloads, const PayloadType *refpt, const MSList *remote_payloads, bool_t reading_response){
PayloadType *pt;
const MSList *elem;
PayloadType *candidate=NULL;
PayloadType *legacy_opus=NULL;
for (elem=local_payloads;elem!=NULL;elem=elem->next){
pt=(PayloadType*)elem->data;
@ -43,14 +43,18 @@ static PayloadType * opus_match(MSOfferAnswerContext *ctx, const MSList *local_p
/*workaround a bug in earlier versions of linphone where opus/48000/1 is offered, which is uncompliant with opus rtp draft*/
if (strcasecmp(pt->mime_type,"opus")==0 ){
if (refpt->channels==1){
pt->channels=1; /*so that we respond with same number of channels */
candidate=pt;
legacy_opus=pt;
}else if (refpt->channels==2){
return payload_type_clone(pt);
}
}
}
return candidate ? payload_type_clone(candidate) : NULL;
if (legacy_opus){
legacy_opus = payload_type_clone(legacy_opus);
legacy_opus->channels=1; /*so that we respond with same number of channels */
return legacy_opus;
}
return NULL;
}
static MSOfferAnswerContext *opus_offer_answer_create_context(void){