const char *sal_stream_description_get_type_as_string(const SalStreamDescription *desc){ if (desc->type==SalOther) return desc->typeother; else return sal_stream_type_to_string(desc->type); }
static belle_sdp_media_description_t *stream_description_to_sdp ( const SalMediaDescription *md, const SalStreamDescription *stream ) { belle_sdp_mime_parameter_t* mime_param; belle_sdp_media_description_t* media_desc; int j; MSList* pt_it; PayloadType* pt; char buffer[1024]; char* dir=NULL; const char *rtp_addr; const char *rtcp_addr; int rtp_port; int rtcp_port; bool_t different_rtp_and_rtcp_addr; rtp_addr=stream->rtp_addr; rtcp_addr=stream->rtcp_addr; rtp_port=stream->rtp_port; rtcp_port=stream->rtcp_port; media_desc = belle_sdp_media_description_create ( sal_stream_type_to_string ( stream->type ) ,stream->rtp_port ,1 ,sal_media_proto_to_string ( stream->proto ) ,NULL ); if (stream->payloads) { for ( pt_it=stream->payloads; pt_it!=NULL; pt_it=pt_it->next ) { pt= ( PayloadType* ) pt_it->data; mime_param= belle_sdp_mime_parameter_create ( pt->mime_type , payload_type_get_number ( pt ) , pt->clock_rate ,stream->type==SalAudio?1:-1 ); belle_sdp_mime_parameter_set_parameters ( mime_param,pt->recv_fmtp ); if ( stream->ptime>0 ) { belle_sdp_mime_parameter_set_ptime ( mime_param,stream->ptime ); } belle_sdp_media_description_append_values_from_mime_parameter ( media_desc,mime_param ); belle_sip_object_unref ( mime_param ); } } else { /* to comply with SDP we cannot have an empty payload type number list */ /* as it happens only when mline is declined with a zero port, it does not matter to put whatever codec*/ belle_sip_list_t* format = belle_sip_list_append(NULL,0); belle_sdp_media_set_media_formats(belle_sdp_media_description_get_media(media_desc),format); } /*only add a c= line within the stream description if address are differents*/ if (rtp_addr[0]!='\0' && strcmp(rtp_addr,md->addr)!=0){ bool_t inet6; if (strchr(rtp_addr,':')!=NULL){ inet6=TRUE; }else inet6=FALSE; belle_sdp_media_description_set_connection(media_desc,belle_sdp_connection_create("IN", inet6 ? "IP6" : "IP4", rtp_addr)); } if ( stream->bandwidth>0 ) belle_sdp_media_description_set_bandwidth ( media_desc,"AS",stream->bandwidth ); if ( stream->proto == SalProtoRtpSavp ) { /* add crypto lines */ for ( j=0; j<SAL_CRYPTO_ALGO_MAX; j++ ) { switch ( stream->crypto[j].algo ) { case AES_128_SHA1_80: snprintf ( buffer, sizeof ( buffer ), "%d %s inline:%s", stream->crypto[j].tag, "AES_CM_128_HMAC_SHA1_80", stream->crypto[j].master_key ); belle_sdp_media_description_add_attribute ( media_desc,belle_sdp_attribute_create ( "crypto",buffer ) ); break; case AES_128_SHA1_32: snprintf ( buffer, sizeof ( buffer ), "%d %s inline:%s", stream->crypto[j].tag, "AES_CM_128_HMAC_SHA1_32", stream->crypto[j].master_key ); belle_sdp_media_description_add_attribute ( media_desc,belle_sdp_attribute_create ( "crypto",buffer ) ); break; case AES_128_NO_AUTH: ms_warning ( "Unsupported crypto suite: AES_128_NO_AUTH" ); break; case NO_CIPHER_SHA1_80: ms_warning ( "Unsupported crypto suite: NO_CIPHER_SHA1_80" ); break; default: j = SAL_CRYPTO_ALGO_MAX; /* no break */ } } } switch ( stream->dir ) { case SalStreamSendRecv: /*dir="sendrecv";*/ dir=NULL; break; case SalStreamRecvOnly: dir="recvonly"; break; case SalStreamSendOnly: dir="sendonly"; break; case SalStreamInactive: dir="inactive"; break; } if ( dir ) belle_sdp_media_description_add_attribute ( media_desc,belle_sdp_attribute_create ( dir,NULL ) ); if (rtp_port != 0) { different_rtp_and_rtcp_addr = (rtcp_addr[0] != '\0') && (strcmp(rtp_addr, rtcp_addr) != 0); if ((rtcp_port != (rtp_port + 1)) || (different_rtp_and_rtcp_addr == TRUE)) { if (different_rtp_and_rtcp_addr == TRUE) { snprintf(buffer, sizeof(buffer), "%u IN IP4 %s", rtcp_port, rtcp_addr); } else { snprintf(buffer, sizeof(buffer), "%u",rtcp_port); } belle_sdp_media_description_add_attribute(media_desc,belle_sdp_attribute_create ("rtcp",buffer)); } } if (stream->ice_completed == TRUE) { belle_sdp_media_description_add_attribute(media_desc,belle_sdp_attribute_create ("nortpproxy","yes")); } if (stream->ice_mismatch == TRUE) { belle_sdp_media_description_add_attribute(media_desc,belle_sdp_attribute_create ("ice-mismatch",NULL)); } else { if (rtp_port != 0) { if (stream->ice_pwd[0] != '\0') belle_sdp_media_description_add_attribute(media_desc,belle_sdp_attribute_create ("ice-pwd",stream->ice_pwd)); if (stream->ice_ufrag[0] != '\0') belle_sdp_media_description_add_attribute(media_desc,belle_sdp_attribute_create ("ice-ufrag",stream->ice_ufrag)); add_ice_candidates(media_desc,stream); add_ice_remote_candidates(media_desc,stream); } } return media_desc; }