int sdp_to_media_description ( belle_sdp_session_description_t *session_desc, SalMediaDescription *desc ) {
belle_sdp_connection_t* cnx;
belle_sip_list_t* media_desc_it;
belle_sdp_media_description_t* media_desc;
belle_sdp_session_name_t *sname;
belle_sip_list_t *custom_attribute_it;
const char* value;
SalDtlsRole session_role=SalDtlsRoleInvalid;
int i;
desc->nb_streams = 0;
desc->dir = SalStreamSendRecv;
if ( ( cnx=belle_sdp_session_description_get_connection ( session_desc ) ) && belle_sdp_connection_get_address ( cnx ) ) {
strncpy ( desc->addr,belle_sdp_connection_get_address ( cnx ),sizeof ( desc->addr ) -1 );
}
if ( (sname=belle_sdp_session_description_get_session_name(session_desc)) && belle_sdp_session_name_get_value(sname) ){
strncpy(desc->name,belle_sdp_session_name_get_value(sname),sizeof(desc->name) - 1);
}
if ( belle_sdp_session_description_get_bandwidth ( session_desc,"AS" ) >0 ) {
desc->bandwidth=belle_sdp_session_description_get_bandwidth ( session_desc,"AS" );
}
/*in some very rare case, session attribute may set stream dir*/
if ( belle_sdp_session_description_get_attribute ( session_desc,"sendrecv" ) ) {
desc->dir=SalStreamSendRecv;
} else if ( belle_sdp_session_description_get_attribute ( session_desc,"sendonly" ) ) {
desc->dir=SalStreamSendOnly;
} else if ( belle_sdp_session_description_get_attribute ( session_desc,"recvonly" ) ) {
desc->dir=SalStreamRecvOnly;
} else if ( belle_sdp_session_description_get_attribute ( session_desc,"inactive" ) ) {
desc->dir=SalStreamInactive;
}
/*DTLS attributes can be defined at session level.*/
value=belle_sdp_session_description_get_attribute_value(session_desc,"setup");
if (value){
if (strncmp(value, "actpass", 7) == 0) {
session_role = SalDtlsRoleUnset;
} else if (strncmp(value, "active", 6) == 0) {
session_role = SalDtlsRoleIsClient;
} else if (strncmp(value, "passive", 7) == 0) {
session_role = SalDtlsRoleIsServer;
}
}
value=belle_sdp_session_description_get_attribute_value(session_desc,"fingerprint");
/*copy dtls attributes to every streams, might be overwritten stream by stream*/
for (i=0;i<SAL_MEDIA_DESCRIPTION_MAX_STREAMS;i++) {
if (value)
strncpy(desc->streams[i].dtls_fingerprint, value, sizeof(desc->streams[i].dtls_fingerprint));
desc->streams[i].dtls_role=session_role; /*set or reset value*/
}
/* Get ICE remote ufrag and remote pwd, and ice_lite flag */
value=belle_sdp_session_description_get_attribute_value(session_desc,"ice-ufrag");
if (value) strncpy(desc->ice_ufrag, value, sizeof(desc->ice_ufrag) - 1);
value=belle_sdp_session_description_get_attribute_value(session_desc,"ice-pwd");
if (value) strncpy(desc->ice_pwd, value, sizeof(desc->ice_pwd)-1);
value=belle_sdp_session_description_get_attribute_value(session_desc,"ice-lite");
if (value) desc->ice_lite = TRUE;
/* Get session RTCP-XR attributes if any */
sdp_parse_session_rtcp_xr_parameters(session_desc, &desc->rtcp_xr);
/* Get the custom attributes */
for (custom_attribute_it = belle_sdp_session_description_get_attributes(session_desc); custom_attribute_it != NULL; custom_attribute_it = custom_attribute_it->next) {
belle_sdp_attribute_t *attr = (belle_sdp_attribute_t *)custom_attribute_it->data;
desc->custom_sdp_attributes = sal_custom_sdp_attribute_append(desc->custom_sdp_attributes, belle_sdp_attribute_get_name(attr), belle_sdp_attribute_get_value(attr));
}
for ( media_desc_it=belle_sdp_session_description_get_media_descriptions ( session_desc )
; media_desc_it!=NULL
; media_desc_it=media_desc_it->next ) {
if (desc->nb_streams==SAL_MEDIA_DESCRIPTION_MAX_STREAMS){
ms_warning("Cannot convert mline at position [%i] from SDP to SalMediaDescription",desc->nb_streams);
break;
}
media_desc=BELLE_SDP_MEDIA_DESCRIPTION ( media_desc_it->data );
sdp_to_stream_description(desc, media_desc);
}
return 0;
}
void linphone_call_params_add_custom_sdp_media_attribute(LinphoneCallParams *params, LinphoneStreamType type, const char *attribute_name, const char *attribute_value) {
params->custom_sdp_media_attributes[type] = sal_custom_sdp_attribute_append(params->custom_sdp_media_attributes[type], attribute_name, attribute_value);
}
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;
belle_sip_list_t *custom_attribute_it;
const char* value;
const char *mtype,*proto;
bool_t has_avpf_attributes;
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 if ( strcasecmp ( "text", mtype ) == 0 ) {
stream->type=SalText;
} 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*/
}
stream->rtcp_mux = belle_sdp_media_description_get_attribute(media_desc, "rtcp-mux") != NULL;
/* 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 (sal_stream_description_has_srtp(stream)) {
sdp_parse_media_crypto_parameters(media_desc, stream);
}
/* Get ICE candidate attributes if any */
sdp_parse_media_ice_parameters(media_desc, stream);
has_avpf_attributes = sdp_parse_rtcp_fb_parameters(media_desc, stream);
/* Get RTCP-FB attributes if any */
if (sal_stream_description_has_avpf(stream)) {
enable_avpf_for_stream(stream);
}
else if (has_avpf_attributes ){
stream->implicit_rtcp_fb = TRUE;
}
/* 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);
/* Get the custom attributes */
for (custom_attribute_it = belle_sdp_media_description_get_attributes(media_desc); custom_attribute_it != NULL; custom_attribute_it = custom_attribute_it->next) {
belle_sdp_attribute_t *attr = (belle_sdp_attribute_t *)custom_attribute_it->data;
stream->custom_sdp_attributes = sal_custom_sdp_attribute_append(stream->custom_sdp_attributes, belle_sdp_attribute_get_name(attr), belle_sdp_attribute_get_value(attr));
}
md->nb_streams++;
return stream;
}
void linphone_call_params_add_custom_sdp_attribute(LinphoneCallParams *params, const char *attribute_name, const char *attribute_value) {
params->custom_sdp_attributes = sal_custom_sdp_attribute_append(params->custom_sdp_attributes, attribute_name, attribute_value);
}
