static void call_ringing(SalOp *h){
LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(h));
LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(h);
SalMediaDescription *md;
if (call==NULL) return;
/*set privacy*/
call->current_params.privacy=(LinphonePrivacyMask)sal_op_get_privacy(call->op);
if (lc->vtable.display_status)
lc->vtable.display_status(lc,_("Remote ringing."));
md=sal_call_get_final_media_description(h);
if (md==NULL){
linphone_core_stop_dtmf_stream(lc);
if (lc->ringstream!=NULL) return;/*already ringing !*/
if (lc->sound_conf.play_sndcard!=NULL){
MSSndCard *ringcard=lc->sound_conf.lsd_card ? lc->sound_conf.lsd_card : lc->sound_conf.play_sndcard;
if (call->localdesc->streams[0].max_rate>0) ms_snd_card_set_preferred_sample_rate(ringcard, call->localdesc->streams[0].max_rate);
/*we release sound before playing ringback tone*/
if (call->audiostream)
audio_stream_unprepare_sound(call->audiostream);
lc->ringstream=ring_start(lc->sound_conf.remote_ring,2000,ringcard);
}
ms_message("Remote ringing...");
if (lc->vtable.display_status)
lc->vtable.display_status(lc,_("Remote ringing..."));
linphone_call_set_state(call,LinphoneCallOutgoingRinging,"Remote ringing");
}else{
/*accept early media */
if (call->audiostream && audio_stream_started(call->audiostream)){
/*streams already started */
ms_message("Early media already started.");
return;
}
if (lc->vtable.show) lc->vtable.show(lc);
if (lc->vtable.display_status)
lc->vtable.display_status(lc,_("Early media."));
linphone_call_set_state(call,LinphoneCallOutgoingEarlyMedia,"Early media");
linphone_core_stop_ringing(lc);
ms_message("Doing early media...");
linphone_core_update_streams(lc,call,md);
}
}
/* This function is used either on IOS to workaround the long time to initialize the Audio Unit or for ICE candidates gathering. */
void audio_stream_prepare_sound(AudioStream *stream, MSSndCard *playcard, MSSndCard *captcard){
audio_stream_unprepare_sound(stream);
stream->dummy=ms_filter_new(MS_RTP_RECV_ID);
rtp_session_set_payload_type(stream->ms.session,0);
ms_filter_call_method(stream->dummy,MS_RTP_RECV_SET_SESSION,stream->ms.session);
if (captcard && playcard){
#ifdef __ios
stream->soundread=ms_snd_card_create_reader(captcard);
stream->soundwrite=ms_snd_card_create_writer(playcard);
ms_filter_link(stream->dummy,0,stream->soundwrite,0);
#else
stream->ms.voidsink=ms_filter_new(MS_VOID_SINK_ID);
ms_filter_link(stream->dummy,0,stream->ms.voidsink,0);
#endif
} else {
stream->ms.voidsink=ms_filter_new(MS_VOID_SINK_ID);
ms_filter_link(stream->dummy,0,stream->ms.voidsink,0);
}
if (stream->ms.ticker == NULL) start_ticker(&stream->ms);
ms_ticker_attach(stream->ms.ticker,stream->dummy);
}
