/**
* Returns a media description to run the streams with, based on a local offer
* and the returned response (remote).
**/
int offer_answer_initiate_outgoing(const SalMediaDescription *local_offer,
const SalMediaDescription *remote_answer,
SalMediaDescription *result) {
int i,j;
const SalStreamDescription *ls,*rs;
for(i=0,j=0; i<local_offer->nb_streams; ++i) {
ms_message("Processing for stream %i",i);
ls=&local_offer->streams[i];
rs=sal_media_description_find_stream((SalMediaDescription*)remote_answer,ls->proto,ls->type);
if (rs) {
initiate_outgoing(ls,rs,&result->streams[j]);
memcpy(&result->streams[i].rtcp_xr, &ls->rtcp_xr, sizeof(result->streams[i].rtcp_xr));
if ((ls->rtcp_xr.enabled == TRUE) && (rs->rtcp_xr.enabled == FALSE)) {
result->streams[i].rtcp_xr.enabled = FALSE;
}
++j;
}
else ms_warning("No matching stream for %i",i);
}
result->nb_streams=local_offer->nb_streams;
result->bandwidth=remote_answer->bandwidth;
strcpy(result->addr,remote_answer->addr);
memcpy(&result->rtcp_xr, &local_offer->rtcp_xr, sizeof(result->rtcp_xr));
if ((local_offer->rtcp_xr.enabled == TRUE) && (remote_answer->rtcp_xr.enabled == FALSE)) {
result->rtcp_xr.enabled = FALSE;
}
return 0;
}
/**
* Returns a media description to run the streams with, based on the local capabilities and
* and the received offer.
* The returned media description is an answer and should be sent to the offerer.
**/
int offer_answer_initiate_incoming(const SalMediaDescription *local_capabilities,
const SalMediaDescription *remote_offer,
SalMediaDescription *result, bool_t one_matching_codec) {
int i;
const SalStreamDescription *ls,*rs;
for(i=0; i<remote_offer->nstreams; ++i) {
rs=&remote_offer->streams[i];
ms_message("Processing for stream %i",i);
ls=sal_media_description_find_stream((SalMediaDescription*)local_capabilities,rs->proto,rs->type);
if (ls) {
initiate_incoming(ls,rs,&result->streams[i],one_matching_codec);
} else {
/* create an inactive stream for the answer, as there where no matching stream a local capability */
result->streams[i].dir=SalStreamInactive;
result->streams[i].port=0;
result->streams[i].type=rs->type;
if (rs->type==SalOther) {
strncpy(result->streams[i].typeother,rs->typeother,sizeof(rs->typeother)-1);
}
}
}
result->nstreams=i;
strcpy(result->username, local_capabilities->username);
strcpy(result->addr,local_capabilities->addr);
result->bandwidth=local_capabilities->bandwidth;
result->session_ver=local_capabilities->session_ver;
result->session_id=local_capabilities->session_id;
return 0;
}
SalStreamDescription * sal_media_description_find_best_stream(SalMediaDescription *md, SalStreamType type) {
SalStreamDescription *desc = sal_media_description_find_stream(md, SalProtoUdpTlsRtpSavpf, type);
if (desc == NULL) desc = sal_media_description_find_stream(md, SalProtoUdpTlsRtpSavp, type);
if (desc == NULL) desc = sal_media_description_find_stream(md, SalProtoRtpSavpf, type);
if (desc == NULL) desc = sal_media_description_find_stream(md, SalProtoRtpSavp, type);
if (desc == NULL) desc = sal_media_description_find_stream(md, SalProtoRtpAvpf, type);
if (desc == NULL) desc = sal_media_description_find_stream(md, SalProtoRtpAvp, type);
return desc;
}
/**
* Returns a media description to run the streams with, based on the local capabilities and
* and the received offer.
* The returned media description is an answer and should be sent to the offerer.
**/
int offer_answer_initiate_incoming(const SalMediaDescription *local_capabilities,
const SalMediaDescription *remote_offer,
SalMediaDescription *result, bool_t one_matching_codec){
int i;
const SalStreamDescription *ls=NULL,*rs;
for(i=0;i<remote_offer->nstreams;++i){
rs=&remote_offer->streams[i];
if (rs->proto!=SalProtoUnknown){
ls=sal_media_description_find_stream((SalMediaDescription*)local_capabilities,rs->proto,rs->type);
/* if matching failed, and remote proposes Avp only, ask for local Savp streams */
if (!ls && rs->proto == SalProtoRtpAvp) {
ls=sal_media_description_find_stream((SalMediaDescription*)local_capabilities,SalProtoRtpSavp,rs->type);
}
}else ms_warning("Unknown protocol for mline %i, declining",i);
if (ls){
initiate_incoming(ls,rs,&result->streams[i],one_matching_codec);
}
else {
/* create an inactive stream for the answer, as there where no matching stream a local capability */
result->streams[i].dir=SalStreamInactive;
result->streams[i].port=0;
result->streams[i].type=rs->type;
result->streams[i].proto=rs->proto;
if (rs->type==SalOther){
strncpy(result->streams[i].typeother,rs->typeother,sizeof(rs->typeother)-1);
}
}
}
result->nstreams=i;
strcpy(result->username, local_capabilities->username);
strcpy(result->addr,local_capabilities->addr);
result->bandwidth=local_capabilities->bandwidth;
result->session_ver=local_capabilities->session_ver;
result->session_id=local_capabilities->session_id;
return 0;
}
/**
* Returns a media description to run the streams with, based on a local offer
* and the returned response (remote).
**/
int offer_answer_initiate_outgoing(const SalMediaDescription *local_offer,
const SalMediaDescription *remote_answer,
SalMediaDescription *result) {
int i,j;
const SalStreamDescription *ls,*rs;
for(i=0,j=0; i<local_offer->nstreams; ++i) {
ms_message("Processing for stream %i",i);
ls=&local_offer->streams[i];
rs=sal_media_description_find_stream((SalMediaDescription*)remote_answer,ls->proto,ls->type);
if (rs) {
initiate_outgoing(ls,rs,&result->streams[j]);
++j;
}
else ms_warning("No matching stream for %i",i);
}
result->nstreams=j;
result->bandwidth=remote_answer->bandwidth;
strcpy(result->addr,remote_answer->addr);
return 0;
}
SalStreamDescription * sal_media_description_find_secure_stream_of_type(SalMediaDescription *md, SalStreamType type) {
SalStreamDescription *desc = sal_media_description_find_stream(md, SalProtoRtpSavpf, type);
if (desc == NULL) desc = sal_media_description_find_stream(md, SalProtoRtpSavp, type);
return desc;
}
void linphone_call_start_media_streams(LinphoneCall *call, bool_t all_inputs_muted, bool_t send_ringbacktone){
LinphoneCore *lc=call->core;
LinphoneAddress *me=linphone_core_get_primary_contact_parsed(lc);
const char *tool="linphone-" LINPHONE_VERSION;
char *cname;
int used_pt=-1;
#ifdef VIDEO_ENABLED
const SalStreamDescription *vstream=sal_media_description_find_stream(call->resultdesc,
SalProtoRtpAvp,SalVideo);
#endif
bool_t use_arc=linphone_core_adaptive_rate_control_enabled(lc);
if(call->audiostream == NULL)
{
ms_fatal("start_media_stream() called without prior init !");
return;
}
call->current_params = call->params;
/* adjust rtp jitter compensation. It must be at least the latency of the sound card */
int jitt_comp=MAX(lc->sound_conf.latency,lc->rtp_conf.audio_jitt_comp);
if (call->media_start_time==0) call->media_start_time=time(NULL);
cname=linphone_address_as_string_uri_only(me);
{
const SalStreamDescription *stream=sal_media_description_find_stream(call->resultdesc,
SalProtoRtpAvp,SalAudio);
if (stream && stream->dir!=SalStreamInactive && stream->port!=0){
MSSndCard *playcard=lc->sound_conf.lsd_card ?
lc->sound_conf.lsd_card : lc->sound_conf.play_sndcard;
MSSndCard *captcard=lc->sound_conf.capt_sndcard;
const char *playfile=lc->play_file;
const char *recfile=lc->rec_file;
call->audio_profile=make_profile(call,call->resultdesc,stream,&used_pt);
bool_t use_ec,use_arc_audio=use_arc;
if (used_pt!=-1){
if (playcard==NULL) {
ms_warning("No card defined for playback !");
}
if (captcard==NULL) {
ms_warning("No card defined for capture !");
}
/*Replace soundcard filters by inactive file players or recorders
when placed in recvonly or sendonly mode*/
if (stream->port==0 || stream->dir==SalStreamRecvOnly){
captcard=NULL;
playfile=NULL;
}else if (stream->dir==SalStreamSendOnly){
playcard=NULL;
captcard=NULL;
recfile=NULL;
/*And we will eventually play "playfile" if set by the user*/
/*playfile=NULL;*/
}
if (send_ringbacktone){
captcard=NULL;
playfile=NULL;/* it is setup later*/
}
/*if playfile are supplied don't use soundcards*/
if (lc->use_files) {
captcard=NULL;
playcard=NULL;
}
use_ec=captcard==NULL ? FALSE : linphone_core_echo_cancellation_enabled(lc);
#if defined(VIDEO_ENABLED)
if (vstream && vstream->dir!=SalStreamInactive && vstream->payloads!=NULL){
/*when video is used, do not make adaptive rate control on audio, it is stupid.*/
use_arc_audio=FALSE;
#if defined(ANDROID)
/*On android we have to disable the echo canceller to preserve CPU for video codecs */
use_ec=FALSE;
#endif
}
#endif
audio_stream_enable_adaptive_bitrate_control(call->audiostream,use_arc_audio);
audio_stream_start_full(
call->audiostream,
call->audio_profile,
stream->addr[0]!='\0' ? stream->addr : call->resultdesc->addr,
stream->port,
stream->port+1,
used_pt,
jitt_comp,
playfile,
recfile,
playcard,
captcard,
use_ec
);
post_configure_audio_streams(call);
if (all_inputs_muted && !send_ringbacktone){
audio_stream_set_mic_gain(call->audiostream,0);
}
if (stream->dir==SalStreamSendOnly && playfile!=NULL){
int pause_time=500;
ms_filter_call_method(call->audiostream->soundread,MS_FILE_PLAYER_LOOP,&pause_time);
}
if (send_ringbacktone){
setup_ring_player(lc,call);
}
audio_stream_set_rtcp_information(call->audiostream, cname, tool);
}else ms_warning("No audio stream accepted ?");
}
}
#ifdef VIDEO_ENABLED
{
used_pt=-1;
/* shutdown preview */
if (lc->previewstream!=NULL) {
video_preview_stop(lc->previewstream);
lc->previewstream=NULL;
}
call->current_params.has_video=FALSE;
if (vstream && vstream->dir!=SalStreamInactive && vstream->port!=0) {
const char *addr=vstream->addr[0]!='\0' ? vstream->addr : call->resultdesc->addr;
call->video_profile=make_profile(call,call->resultdesc,vstream,&used_pt);
if (used_pt!=-1){
VideoStreamDir dir=VideoStreamSendRecv;
MSWebCam *cam=lc->video_conf.device;
bool_t is_inactive=FALSE;
call->current_params.has_video=TRUE;
video_stream_set_sent_video_size(call->videostream,linphone_core_get_preferred_video_size(lc));
video_stream_enable_self_view(call->videostream,lc->video_conf.selfview);
if (lc->video_window_id!=0)
video_stream_set_native_window_id(call->videostream,lc->video_window_id);
if (lc->preview_window_id!=0)
video_stream_set_native_preview_window_id (call->videostream,lc->preview_window_id);
video_stream_use_preview_video_window (call->videostream,lc->use_preview_window);
if (vstream->dir==SalStreamSendOnly && lc->video_conf.capture ){
cam=get_nowebcam_device();
dir=VideoStreamSendOnly;
}else if (vstream->dir==SalStreamRecvOnly && lc->video_conf.display ){
dir=VideoStreamRecvOnly;
}else if (vstream->dir==SalStreamSendRecv){
if (lc->video_conf.display && lc->video_conf.capture)
dir=VideoStreamSendRecv;
else if (lc->video_conf.display)
dir=VideoStreamRecvOnly;
else
dir=VideoStreamSendOnly;
}else{
ms_warning("video stream is inactive.");
/*either inactive or incompatible with local capabilities*/
is_inactive=TRUE;
}
if (call->camera_active==FALSE || all_inputs_muted){
cam=get_nowebcam_device();
}
if (!is_inactive){
video_stream_set_direction (call->videostream, dir);
video_stream_start(call->videostream,
call->video_profile, addr, vstream->port,
vstream->port+1,
used_pt, jitt_comp, cam);
video_stream_set_rtcp_information(call->videostream, cname,tool);
}
}else ms_warning("No video stream accepted.");
}else{
ms_warning("No valid video stream defined.");
}
}
#endif
call->all_muted=all_inputs_muted;
call->playing_ringbacktone=send_ringbacktone;
call->up_bw=linphone_core_get_upload_bandwidth(lc);
if (ortp_zrtp_available()) {
OrtpZrtpParams params;
params.zid=get_hexa_zrtp_identifier(lc);
params.zid_file=lc->zrtp_secrets_cache;
audio_stream_enable_zrtp(call->audiostream,¶ms);
}
goto end;
end:
ms_free(cname);
linphone_address_destroy(me);
}
