static SalStreamDescription * sdp_to_stream_description(SalMediaDescription *md, belle_sdp_media_description_t *media_desc) {
SalStreamDescription *stream;
belle_sdp_connection_t* cnx;
belle_sdp_media_t* media;
belle_sdp_attribute_t* attribute;
const char* value;
const char *mtype,*proto;
stream=&md->streams[md->n_total_streams];
media=belle_sdp_media_description_get_media ( media_desc );
memset ( stream,0,sizeof ( *stream ) );
proto = belle_sdp_media_get_protocol ( media );
stream->proto=SalProtoOther;
if ( proto ) {
if ( strcasecmp ( proto,"RTP/AVP" ) ==0 )
stream->proto=SalProtoRtpAvp;
else if ( strcasecmp ( proto,"RTP/SAVP" ) ==0 ) {
stream->proto=SalProtoRtpSavp;
}else{
strncpy(stream->proto_other,proto,sizeof(stream->proto_other)-1);
}
}
if ( ( cnx=belle_sdp_media_description_get_connection ( media_desc ) ) && belle_sdp_connection_get_address ( cnx ) ) {
strncpy ( stream->rtp_addr,belle_sdp_connection_get_address ( cnx ), sizeof ( stream->rtp_addr ) -1 );
}
stream->rtp_port=belle_sdp_media_get_media_port ( media );
if ( stream->rtp_port > 0 )
md->n_active_streams++;
mtype = belle_sdp_media_get_media_type ( media );
if ( strcasecmp ( "audio", mtype ) == 0 ) {
stream->type=SalAudio;
} else if ( strcasecmp ( "video", mtype ) == 0 ) {
stream->type=SalVideo;
} else {
stream->type=SalOther;
strncpy ( stream->typeother,mtype,sizeof ( stream->typeother )-1 );
}
if ( belle_sdp_media_description_get_bandwidth ( media_desc,"AS" ) >0 ) {
stream->bandwidth=belle_sdp_media_description_get_bandwidth ( media_desc,"AS" );
}
if ( belle_sdp_media_description_get_attribute ( media_desc,"sendrecv" ) ) {
stream->dir=SalStreamSendRecv;
} else if ( belle_sdp_media_description_get_attribute ( media_desc,"sendonly" ) ) {
stream->dir=SalStreamSendOnly;
} else if ( belle_sdp_media_description_get_attribute ( media_desc,"recvonly" ) ) {
stream->dir=SalStreamRecvOnly;
} else if ( belle_sdp_media_description_get_attribute ( media_desc,"inactive" ) ) {
stream->dir=SalStreamInactive;
} else {
stream->dir=md->dir; /*takes default value if not present*/
}
/* Get media payload types */
sdp_parse_payload_types(media_desc, stream);
/* Get media specific RTCP attribute */
stream->rtcp_port = stream->rtp_port + 1;
snprintf(stream->rtcp_addr, sizeof(stream->rtcp_addr), "%s", stream->rtp_addr);
attribute=belle_sdp_media_description_get_attribute(media_desc,"rtcp");
if (attribute && (value=belle_sdp_attribute_get_value(attribute))!=NULL){
char tmp[256];
int nb = sscanf(value, "%d IN IP4 %s", &stream->rtcp_port, tmp);
if (nb == 1) {
/* SDP rtcp attribute only contains the port */
} else if (nb == 2) {
strncpy(stream->rtcp_addr, tmp, sizeof(stream->rtcp_addr)-1);
} else {
ms_warning("sdp has a strange a=rtcp line (%s) nb=%i", value, nb);
}
}
/* Read crypto lines if any */
if ( stream->proto == SalProtoRtpSavp ) {
sdp_parse_media_crypto_parameters(media_desc, stream);
}
/* Get ICE candidate attributes if any */
sdp_parse_media_ice_parameters(media_desc, stream);
/* Get RTCP-XR attributes if any */
stream->rtcp_xr = md->rtcp_xr; // Use session parameters if no stream parameters are defined
sdp_parse_media_rtcp_xr_parameters(media_desc, &stream->rtcp_xr);
md->n_total_streams++;
return stream;
}
static SalStreamDescription * sdp_to_stream_description(SalMediaDescription *md, belle_sdp_media_description_t *media_desc) {
SalStreamDescription *stream;
belle_sdp_connection_t* cnx;
belle_sdp_media_t* media;
belle_sdp_attribute_t* attribute;
const char* value;
const char *mtype,*proto;
stream=&md->streams[md->nb_streams];
media=belle_sdp_media_description_get_media ( media_desc );
proto = belle_sdp_media_get_protocol ( media );
stream->proto=SalProtoOther;
if ( proto ) {
if (strcasecmp(proto, "RTP/AVP") == 0) {
stream->proto = SalProtoRtpAvp;
} else if (strcasecmp(proto, "RTP/SAVP") == 0) {
stream->proto = SalProtoRtpSavp;
} else if (strcasecmp(proto, "RTP/AVPF") == 0) {
stream->proto = SalProtoRtpAvpf;
} else if (strcasecmp(proto, "RTP/SAVPF") == 0) {
stream->proto = SalProtoRtpSavpf;
} else if (strcasecmp(proto, "UDP/TLS/RTP/SAVP") == 0) {
stream->proto = SalProtoUdpTlsRtpSavp;
} else if (strcasecmp(proto, "UDP/TLS/RTP/SAVPF") == 0) {
stream->proto = SalProtoUdpTlsRtpSavpf;
} else {
strncpy(stream->proto_other,proto,sizeof(stream->proto_other)-1);
}
}
if ( ( cnx=belle_sdp_media_description_get_connection ( media_desc ) ) && belle_sdp_connection_get_address ( cnx ) ) {
strncpy ( stream->rtp_addr,belle_sdp_connection_get_address ( cnx ), sizeof ( stream->rtp_addr ) -1 );
stream->ttl=belle_sdp_connection_get_ttl(cnx);
}
stream->rtp_port=belle_sdp_media_get_media_port ( media );
mtype = belle_sdp_media_get_media_type ( media );
if ( strcasecmp ( "audio", mtype ) == 0 ) {
stream->type=SalAudio;
} else if ( strcasecmp ( "video", mtype ) == 0 ) {
stream->type=SalVideo;
} else {
stream->type=SalOther;
strncpy ( stream->typeother,mtype,sizeof ( stream->typeother )-1 );
}
if ( belle_sdp_media_description_get_bandwidth ( media_desc,"AS" ) >0 ) {
stream->bandwidth=belle_sdp_media_description_get_bandwidth ( media_desc,"AS" );
}
if ( belle_sdp_media_description_get_attribute ( media_desc,"sendrecv" ) ) {
stream->dir=SalStreamSendRecv;
} else if ( belle_sdp_media_description_get_attribute ( media_desc,"sendonly" ) ) {
stream->dir=SalStreamSendOnly;
} else if ( belle_sdp_media_description_get_attribute ( media_desc,"recvonly" ) ) {
stream->dir=SalStreamRecvOnly;
} else if ( belle_sdp_media_description_get_attribute ( media_desc,"inactive" ) ) {
stream->dir=SalStreamInactive;
} else {
stream->dir=md->dir; /*takes default value if not present*/
}
/* Get media payload types */
sdp_parse_payload_types(media_desc, stream);
/* Get media specific RTCP attribute */
stream->rtcp_port = stream->rtp_port + 1;
snprintf(stream->rtcp_addr, sizeof(stream->rtcp_addr), "%s", stream->rtp_addr);
attribute=belle_sdp_media_description_get_attribute(media_desc,"rtcp");
if (attribute && (value=belle_sdp_attribute_get_value(attribute))!=NULL){
char tmp[256];
int nb = sscanf(value, "%d IN IP4 %s", &stream->rtcp_port, tmp);
if (nb == 1) {
/* SDP rtcp attribute only contains the port */
} else if (nb == 2) {
strncpy(stream->rtcp_addr, tmp, sizeof(stream->rtcp_addr)-1);
} else {
ms_warning("sdp has a strange a=rtcp line (%s) nb=%i", value, nb);
}
}
/* Read DTLS specific attributes : check is some are found in the stream description otherwise copy the session description one(which are at least set to Invalid) */
if (((stream->proto == SalProtoUdpTlsRtpSavpf) || (stream->proto == SalProtoUdpTlsRtpSavp))) {
attribute=belle_sdp_media_description_get_attribute(media_desc,"setup");
if (attribute && (value=belle_sdp_attribute_get_value(attribute))!=NULL){
if (strncmp(value, "actpass", 7) == 0) {
stream->dtls_role = SalDtlsRoleUnset;
} else if (strncmp(value, "active", 6) == 0) {
stream->dtls_role = SalDtlsRoleIsClient;
} else if (strncmp(value, "passive", 7) == 0) {
stream->dtls_role = SalDtlsRoleIsServer;
}
}
if (stream->dtls_role != SalDtlsRoleInvalid && (attribute=belle_sdp_media_description_get_attribute(media_desc,"fingerprint"))) {
strncpy(stream->dtls_fingerprint, belle_sdp_attribute_get_value(attribute),sizeof(stream->dtls_fingerprint));
}
}
/* Read crypto lines if any */
if ((stream->proto == SalProtoRtpSavpf) || (stream->proto == SalProtoRtpSavp)) {
sdp_parse_media_crypto_parameters(media_desc, stream);
}
/* Get ICE candidate attributes if any */
sdp_parse_media_ice_parameters(media_desc, stream);
/* Get RTCP-FB attributes if any */
if ((stream->proto == SalProtoRtpAvpf) || (stream->proto == SalProtoRtpSavpf)) {
enable_avpf_for_stream(stream);
sdp_parse_rtcp_fb_parameters(media_desc, stream);
}
/* Get RTCP-XR attributes if any */
stream->rtcp_xr = md->rtcp_xr; // Use session parameters if no stream parameters are defined
sdp_parse_media_rtcp_xr_parameters(media_desc, &stream->rtcp_xr);
md->nb_streams++;
return stream;
}
