You can do the actual sdp structure as well. For sure you will need the m lines in the sdp, if you do the structure, it can be sparse just like the string.
On Sep 4, 2014, at 2:11 AM, Andreas Wehrmann <a.wehrm...@yandex.com> wrote: > Alright, from the beginning: > > --------------------------------------------------- > That's how I create the stack: > > sip_stack = nua_create( sip_root, > sip_evt_dispatcher, > reinterpret_cast< nua_magic_t* >( this ), > TAG_IF( (! uas_id.empty()), SIPTAG_USER_AGENT_STR( > uas_id.c_str() ) ), > SIPTAG_ALLOW_STR( > "INVITE,ACK,CANCEL,BYE,OPTIONS,PRACK,UPDATE,MESSAGE" ), > NUTAG_URL( my_url.c_str() ), > TAG_END() ); > > --------------------------------------------------- > Placing a call involves these calls: > > nh = nua_handle( sip_stack, reinterpret_cast< nua_hmagic_t* >( this ), > SIPTAG_TO( to ), > TAG_IF( (NULL != from), SIPTAG_FROM( from ) ), > TAG_IF( ((NULL == from) && (strlen(from_user ? from_user > : "") > 0)), NUTAG_M_USERNAME( from_user ) ), > TAG_IF( session_timer.useSessionTimer(), > NUTAG_SESSION_REFRESHER( nua_local_refresher ) ), > TAG_IF( session_timer.useSessionTimer(), NUTAG_MIN_SE( > session_timer.minimumSessionExpires() ) ), > TAG_IF( session_timer.useSessionTimer(), > NUTAG_SESSION_TIMER( session_timer.sessionExpires() ) ), > TAG_IF( session_timer.useSessionTimer(), > NUTAG_REFRESH_WITHOUT_SDP( 1 ) ), > TAG_END() ); > <some other stuff (i.e. generation of SDP string)> > > nua_invite( nh, > TAG_IF( (! additional_header_str.empty()), SIPTAG_HEADER_STR( > additional_header_str.c_str() ) ), > SOATAG_USER_SDP_STR( sdp_os.str().c_str() ), > SOATAG_RTP_SELECT( SOA_RTP_SELECT_COMMON ), > TAG_END() ); > > --------------------------------------------------- > Accepting a call looks like this: > > nua_respond( reinterpret_cast< nua_handle_t* >( call_id() ), > status_code, > sip_status_phrase( status_code ), > TAG_IF( strlen( sdp_str ), SOATAG_USER_SDP_STR( sdp_str ) ), > TAG_IF( (! aux_codecs.empty()), SOATAG_AUDIO_AUX( > aux_codecs.c_str() ) ), > TAG_IF( strlen( reason_str ), SIPTAG_REASON_STR( reason_str ) > ), > TAG_IF( use_session_timer, NUTAG_SESSION_REFRESHER( > nua_local_refresher ) ), > TAG_IF( use_session_timer, NUTAG_MIN_SE( > session_timer.minimumSessionExpires() ) ), > TAG_IF( use_session_timer, NUTAG_SESSION_TIMER( > session_timer.sessionExpires() ) ), > TAG_IF( use_session_timer, NUTAG_REFRESH_WITHOUT_SDP( 1 ) ), > TAG_END() ); > > --------------------------------------------------- > My first (naive) attempt was trying to update the media mode like so: > > std::string sdp_media_mode_line( "a=" ); > sdp_media_mode_line.append( media_mode.sdp_str() ); > nua_invite( reinterpret_cast< nua_handle_t* >( call_id() ), > SOATAG_USER_SDP_STR( sdp_media_mode_line.c_str() ), > TAG_END() ); > > Of course this doesn't work since SOA doesn't know what media that attribute > belongs to... > I didn't try to include the media line (yet). > > What I'm basically trying to do is to change a certain attribute for all > media of a certain type at once. > Is there a more elegant way than USER_SDP_STR, or is it the recommended way > to go? > > > Regards, > > Andreas > > > 03.09.2014, 15:23, "Michael Jerris" <m...@jerris.com>: >> I know it works with USER_SDP_STR, what exactly is your call to >> update/invite? are you doing ACTIVE_AUDIO(1) ? >> >> On Sep 3, 2014, at 9:13 AM, Andreas Wehrmann <a.wehrm...@yandex.com> wrote: >>> Hi! >>> >>> I'm somewhat at a loss here. >>> I'm in a SIP call that I made or accepted with one of >>> a=[inactive|recvonly|sendonly|sendrecv] in the SDP. >>> There is only one media (audio). >>> When I make or answer a call, I create the complete SDP and provide it >>> to nua with SOATAG_USER_SDP_STR which is working just fine. >>> >>> Now I would like to be able to change the media mode mid-call using the >>> same SDP as before with a new media mode setting, but how do I do that? >>> I tried calling nua_update/nua_invite using SOATAG_ACTIVE_AUDIO but it >>> was to no avail. >>> >>> Is SOATAG_ACTIVE_AUDIO the way to go or should I be doing something >>> different? >>> >>> Any help is appreciated. >>> >>> Best regards, >>> Andreas ------------------------------------------------------------------------------ Slashdot TV. Video for Nerds. Stuff that matters. http://tv.slashdot.org/ _______________________________________________ Sofia-sip-devel mailing list Sofia-sip-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/sofia-sip-devel
