4 Copyright (C) 2010 Belledonne Communications SARL
5 (simon.morlat@linphone.org)
7 This program is free software; you can redistribute it and/or
8 modify it under the terms of the GNU General Public License
9 as published by the Free Software Foundation; either version 2
10 of the License, or (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
24 #include "linphonecore.h"
28 #include <ortp/event.h>
32 #include "mediastreamer2/mediastream.h"
33 #include "mediastreamer2/msvolume.h"
34 #include "mediastreamer2/msequalizer.h"
35 #include "mediastreamer2/msfileplayer.h"
36 #include "mediastreamer2/msjpegwriter.h"
37 #include "mediastreamer2/mseventqueue.h"
38 #include "mediastreamer2/mssndcard.h"
41 static MSWebCam *get_nowebcam_device(){
42 return ms_web_cam_manager_get_cam(ms_web_cam_manager_get(),"StaticImage: Static picture");
46 static bool_t generate_b64_crypto_key(int key_length, char* key_out) {
48 uint8_t* tmp = (uint8_t*) malloc(key_length);
49 if (ortp_crypto_get_random(tmp, key_length)!=0) {
50 ms_error("Failed to generate random key");
55 b64_size = b64_encode((const char*)tmp, key_length, NULL, 0);
57 ms_error("Failed to b64 encode key");
61 key_out[b64_size] = '\0';
62 b64_encode((const char*)tmp, key_length, key_out, 40);
67 LinphoneCore *linphone_call_get_core(const LinphoneCall *call){
71 const char* linphone_call_get_authentication_token(LinphoneCall *call){
72 return call->auth_token;
75 bool_t linphone_call_get_authentication_token_verified(LinphoneCall *call){
76 return call->auth_token_verified;
79 static bool_t linphone_call_are_all_streams_encrypted(LinphoneCall *call) {
80 // Check ZRTP encryption in audiostream
81 if (!call->audiostream_encrypted) {
86 // If video enabled, check ZRTP encryption in videostream
87 const LinphoneCallParams *params=linphone_call_get_current_params(call);
88 if (params->has_video && !call->videostream_encrypted) {
96 void propagate_encryption_changed(LinphoneCall *call){
97 LinphoneCore *lc=call->core;
98 if (!linphone_call_are_all_streams_encrypted(call)) {
99 ms_message("Some streams are not encrypted");
100 call->current_params.media_encryption=LinphoneMediaEncryptionNone;
101 if (lc->vtable.call_encryption_changed)
102 lc->vtable.call_encryption_changed(call->core, call, FALSE, call->auth_token);
104 ms_message("All streams are encrypted");
105 call->current_params.media_encryption=LinphoneMediaEncryptionZRTP;
106 if (lc->vtable.call_encryption_changed)
107 lc->vtable.call_encryption_changed(call->core, call, TRUE, call->auth_token);
112 static void linphone_call_videostream_encryption_changed(void *data, bool_t encrypted){
113 ms_message("Video stream is %s", encrypted ? "encrypted" : "not encrypted");
115 LinphoneCall *call = (LinphoneCall *)data;
116 call->videostream_encrypted=encrypted;
117 propagate_encryption_changed(call);
121 static void linphone_call_audiostream_encryption_changed(void *data, bool_t encrypted) {
122 char status[255]={0};
123 ms_message("Audio stream is %s ", encrypted ? "encrypted" : "not encrypted");
125 LinphoneCall *call = (LinphoneCall *)data;
126 call->audiostream_encrypted=encrypted;
128 if (encrypted && call->core->vtable.display_status != NULL) {
129 snprintf(status,sizeof(status)-1,_("Authentication token is %s"),call->auth_token);
130 call->core->vtable.display_status(call->core, status);
133 propagate_encryption_changed(call);
137 // Enable video encryption
138 const LinphoneCallParams *params=linphone_call_get_current_params(call);
139 if (params->has_video) {
140 ms_message("Trying to enable encryption on video stream");
141 OrtpZrtpParams params;
142 params.zid_file=NULL; //unused
143 video_stream_enable_zrtp(call->videostream,call->audiostream,¶ms);
149 static void linphone_call_audiostream_auth_token_ready(void *data, const char* auth_token, bool_t verified) {
150 LinphoneCall *call=(LinphoneCall *)data;
151 if (call->auth_token != NULL)
152 ms_free(call->auth_token);
154 call->auth_token=ms_strdup(auth_token);
155 call->auth_token_verified=verified;
157 ms_message("Authentication token is %s (%s)", auth_token, verified?"verified":"unverified");
160 void linphone_call_set_authentication_token_verified(LinphoneCall *call, bool_t verified){
161 if (call->audiostream==NULL){
162 ms_error("linphone_call_set_authentication_token_verified(): No audio stream");
164 if (call->audiostream->ortpZrtpContext==NULL){
165 ms_error("linphone_call_set_authentication_token_verified(): No zrtp context.");
167 if (!call->auth_token_verified && verified){
168 ortp_zrtp_sas_verified(call->audiostream->ortpZrtpContext);
169 }else if (call->auth_token_verified && !verified){
170 ortp_zrtp_sas_reset_verified(call->audiostream->ortpZrtpContext);
172 call->auth_token_verified=verified;
173 propagate_encryption_changed(call);
176 static MSList *make_codec_list(LinphoneCore *lc, const MSList *codecs, int bandwidth_limit,int* max_sample_rate){
179 if (max_sample_rate) *max_sample_rate=0;
180 for(it=codecs;it!=NULL;it=it->next){
181 PayloadType *pt=(PayloadType*)it->data;
182 if (pt->flags & PAYLOAD_TYPE_ENABLED){
183 if (bandwidth_limit>0 && !linphone_core_is_payload_type_usable_for_bandwidth(lc,pt,bandwidth_limit)){
184 ms_message("Codec %s/%i eliminated because of audio bandwidth constraint.",pt->mime_type,pt->clock_rate);
187 if (linphone_core_check_payload_type_usability(lc,pt)){
188 l=ms_list_append(l,payload_type_clone(pt));
189 if (max_sample_rate && payload_type_get_rate(pt)>*max_sample_rate) *max_sample_rate=payload_type_get_rate(pt);
196 static SalMediaDescription *_create_local_media_description(LinphoneCore *lc, LinphoneCall *call, unsigned int session_id, unsigned int session_ver){
200 const char *me=linphone_core_get_identity(lc);
201 LinphoneAddress *addr=linphone_address_new(me);
202 const char *username=linphone_address_get_username (addr);
203 SalMediaDescription *md=sal_media_description_new();
206 md->session_id=session_id;
207 md->session_ver=session_ver;
209 strncpy(md->addr,call->localip,sizeof(md->addr));
210 strncpy(md->username,username,sizeof(md->username));
211 md->bandwidth=linphone_core_get_download_bandwidth(lc);
213 /*set audio capabilities */
214 strncpy(md->streams[0].addr,call->localip,sizeof(md->streams[0].addr));
215 md->streams[0].port=call->audio_port;
216 md->streams[0].proto=(call->params.media_encryption == LinphoneMediaEncryptionSRTP) ?
217 SalProtoRtpSavp : SalProtoRtpAvp;
218 md->streams[0].type=SalAudio;
219 md->streams[0].ptime=lc->net_conf.down_ptime;
220 l=make_codec_list(lc,lc->codecs_conf.audio_codecs,call->params.audio_bw,&md->streams[0].max_rate);
221 pt=payload_type_clone(rtp_profile_get_payload_from_mime(&av_profile,"telephone-event"));
222 l=ms_list_append(l,pt);
223 md->streams[0].payloads=l;
227 if (call->params.has_video){
229 md->streams[1].port=call->video_port;
230 md->streams[1].proto=md->streams[0].proto;
231 md->streams[1].type=SalVideo;
232 l=make_codec_list(lc,lc->codecs_conf.video_codecs,0,NULL);
233 md->streams[1].payloads=l;
236 for(i=0; i<md->nstreams; i++) {
237 if (md->streams[i].proto == SalProtoRtpSavp) {
238 md->streams[i].crypto[0].tag = 1;
239 md->streams[i].crypto[0].algo = AES_128_SHA1_80;
240 if (!generate_b64_crypto_key(30, md->streams[i].crypto[0].master_key))
241 md->streams[i].crypto[0].algo = 0;
242 md->streams[i].crypto[1].tag = 2;
243 md->streams[i].crypto[1].algo = AES_128_SHA1_32;
244 if (!generate_b64_crypto_key(30, md->streams[i].crypto[1].master_key))
245 md->streams[i].crypto[1].algo = 0;
246 md->streams[i].crypto[2].algo = 0;
248 if (linphone_core_get_firewall_policy(call->core) == LinphonePolicyUseIce){
249 md->streams[i].ice_check_list = ice_check_list_new();
250 ice_session_add_check_list(call->ice_session, md->streams[i].ice_check_list);
254 linphone_address_destroy(addr);
258 void update_local_media_description(LinphoneCore *lc, LinphoneCall *call){
259 SalMediaDescription *md=call->localdesc;
261 call->localdesc = create_local_media_description(lc,call);
263 call->localdesc = _create_local_media_description(lc,call,md->session_id,md->session_ver+1);
264 sal_media_description_unref(md);
268 SalMediaDescription *create_local_media_description(LinphoneCore *lc, LinphoneCall *call){
269 unsigned int id=rand() & 0xfff;
270 return _create_local_media_description(lc,call,id,id);
273 static int find_port_offset(LinphoneCore *lc){
277 bool_t already_used=FALSE;
278 for(offset=0;offset<100;offset+=2){
279 audio_port=linphone_core_get_audio_port (lc)+offset;
281 for(elem=lc->calls;elem!=NULL;elem=elem->next){
282 LinphoneCall *call=(LinphoneCall*)elem->data;
283 if (call->audio_port==audio_port) {
288 if (!already_used) break;
291 ms_error("Could not find any free port !");
297 static void linphone_call_init_common(LinphoneCall *call, LinphoneAddress *from, LinphoneAddress *to){
299 call->magic=linphone_call_magic;
301 call->state=LinphoneCallIdle;
302 call->transfer_state = LinphoneCallIdle;
303 call->start_time=time(NULL);
304 call->media_start_time=0;
305 call->log=linphone_call_log_new(call, from, to);
306 call->owns_call_log=TRUE;
307 linphone_core_notify_all_friends(call->core,LinphoneStatusOnThePhone);
308 port_offset=find_port_offset (call->core);
309 if (port_offset==-1) return;
310 call->audio_port=linphone_core_get_audio_port(call->core)+port_offset;
311 call->video_port=linphone_core_get_video_port(call->core)+port_offset;
312 linphone_call_init_stats(&call->stats[LINPHONE_CALL_STATS_AUDIO], LINPHONE_CALL_STATS_AUDIO);
313 linphone_call_init_stats(&call->stats[LINPHONE_CALL_STATS_VIDEO], LINPHONE_CALL_STATS_VIDEO);
316 void linphone_call_init_stats(LinphoneCallStats *stats, int type) {
318 stats->received_rtcp = NULL;
319 stats->sent_rtcp = NULL;
322 static void discover_mtu(LinphoneCore *lc, const char *remote){
324 if (lc->net_conf.mtu==0 ){
325 /*attempt to discover mtu*/
326 mtu=ms_discover_mtu(remote);
329 ms_message("Discovered mtu is %i, RTP payload max size is %i",
330 mtu, ms_get_payload_max_size());
335 LinphoneCall * linphone_call_new_outgoing(struct _LinphoneCore *lc, LinphoneAddress *from, LinphoneAddress *to, const LinphoneCallParams *params)
337 LinphoneCall *call=ms_new0(LinphoneCall,1);
338 call->dir=LinphoneCallOutgoing;
339 call->op=sal_op_new(lc->sal);
340 sal_op_set_user_pointer(call->op,call);
342 linphone_core_get_local_ip(lc,linphone_address_get_domain(to),call->localip);
343 linphone_call_init_common(call,from,to);
344 call->params=*params;
345 if (linphone_core_get_firewall_policy(call->core) == LinphonePolicyUseIce) call->ice_session=ice_session_new();
346 call->localdesc=create_local_media_description (lc,call);
347 call->camera_active=params->has_video;
348 switch (linphone_core_get_firewall_policy(call->core)) {
349 case LinphonePolicyUseStun:
350 linphone_core_run_stun_tests(call->core,call);
352 case LinphonePolicyUseIce:
353 ms_error("Gather ICE candidates");
358 discover_mtu(lc,linphone_address_get_domain (to));
359 if (params->referer){
360 sal_call_set_referer(call->op,params->referer->op);
361 call->referer=linphone_call_ref(params->referer);
366 LinphoneCall * linphone_call_new_incoming(LinphoneCore *lc, LinphoneAddress *from, LinphoneAddress *to, SalOp *op){
367 LinphoneCall *call=ms_new0(LinphoneCall,1);
370 call->dir=LinphoneCallIncoming;
371 sal_op_set_user_pointer(op,call);
375 if (lc->sip_conf.ping_with_options){
376 /*the following sends an option request back to the caller so that
377 we get a chance to discover our nat'd address before answering.*/
378 call->ping_op=sal_op_new(lc->sal);
379 from_str=linphone_address_as_string_uri_only(from);
380 sal_op_set_route(call->ping_op,sal_op_get_network_origin(op));
381 sal_op_set_user_pointer(call->ping_op,call);
382 sal_ping(call->ping_op,linphone_core_find_best_identity(lc,from,NULL),from_str);
386 linphone_address_clean(from);
387 linphone_core_get_local_ip(lc,linphone_address_get_domain(from),call->localip);
388 linphone_call_init_common(call, from, to);
389 linphone_core_init_default_params(lc, &call->params);
390 call->params.has_video &= !!lc->video_policy.automatically_accept;
391 call->localdesc=create_local_media_description (lc,call);
392 call->camera_active=call->params.has_video;
393 if (linphone_core_get_firewall_policy(call->core)==LinphonePolicyUseStun)
394 linphone_core_run_stun_tests(call->core,call);
395 discover_mtu(lc,linphone_address_get_domain(from));
399 /* this function is called internally to get rid of a call.
400 It performs the following tasks:
401 - remove the call from the internal list of calls
402 - update the call logs accordingly
405 static void linphone_call_set_terminated(LinphoneCall *call){
406 LinphoneCore *lc=call->core;
408 linphone_core_update_allocated_audio_bandwidth(lc);
410 call->owns_call_log=FALSE;
411 linphone_call_log_completed(call);
414 if (call == lc->current_call){
415 ms_message("Resetting the current call");
416 lc->current_call=NULL;
419 if (linphone_core_del_call(lc,call) != 0){
420 ms_error("Could not remove the call from the list !!!");
423 if (ms_list_size(lc->calls)==0)
424 linphone_core_notify_all_friends(lc,lc->presence_mode);
426 linphone_core_conference_check_uninit(lc);
427 if (call->ringing_beep){
428 linphone_core_stop_dtmf(lc);
429 call->ringing_beep=FALSE;
432 linphone_call_unref(call->referer);
437 void linphone_call_fix_call_parameters(LinphoneCall *call){
438 call->params.has_video=call->current_params.has_video;
439 call->params.media_encryption=call->current_params.media_encryption;
442 const char *linphone_call_state_to_string(LinphoneCallState cs){
444 case LinphoneCallIdle:
445 return "LinphoneCallIdle";
446 case LinphoneCallIncomingReceived:
447 return "LinphoneCallIncomingReceived";
448 case LinphoneCallOutgoingInit:
449 return "LinphoneCallOutgoingInit";
450 case LinphoneCallOutgoingProgress:
451 return "LinphoneCallOutgoingProgress";
452 case LinphoneCallOutgoingRinging:
453 return "LinphoneCallOutgoingRinging";
454 case LinphoneCallOutgoingEarlyMedia:
455 return "LinphoneCallOutgoingEarlyMedia";
456 case LinphoneCallConnected:
457 return "LinphoneCallConnected";
458 case LinphoneCallStreamsRunning:
459 return "LinphoneCallStreamsRunning";
460 case LinphoneCallPausing:
461 return "LinphoneCallPausing";
462 case LinphoneCallPaused:
463 return "LinphoneCallPaused";
464 case LinphoneCallResuming:
465 return "LinphoneCallResuming";
466 case LinphoneCallRefered:
467 return "LinphoneCallRefered";
468 case LinphoneCallError:
469 return "LinphoneCallError";
470 case LinphoneCallEnd:
471 return "LinphoneCallEnd";
472 case LinphoneCallPausedByRemote:
473 return "LinphoneCallPausedByRemote";
474 case LinphoneCallUpdatedByRemote:
475 return "LinphoneCallUpdatedByRemote";
476 case LinphoneCallIncomingEarlyMedia:
477 return "LinphoneCallIncomingEarlyMedia";
478 case LinphoneCallUpdated:
479 return "LinphoneCallUpdated";
480 case LinphoneCallReleased:
481 return "LinphoneCallReleased";
483 return "undefined state";
486 void linphone_call_set_state(LinphoneCall *call, LinphoneCallState cstate, const char *message){
487 LinphoneCore *lc=call->core;
489 if (call->state!=cstate){
490 if (call->state==LinphoneCallEnd || call->state==LinphoneCallError){
491 if (cstate!=LinphoneCallReleased){
492 ms_warning("Spurious call state change from %s to %s, ignored.",linphone_call_state_to_string(call->state),
493 linphone_call_state_to_string(cstate));
497 ms_message("Call %p: moving from state %s to %s",call,linphone_call_state_to_string(call->state),
498 linphone_call_state_to_string(cstate));
499 if (cstate!=LinphoneCallRefered){
500 /*LinphoneCallRefered is rather an event, not a state.
501 Indeed it does not change the state of the call (still paused or running)*/
504 if (cstate==LinphoneCallEnd || cstate==LinphoneCallError){
505 switch(call->reason){
506 case LinphoneReasonDeclined:
507 call->log->status=LinphoneCallDeclined;
508 case LinphoneReasonNotAnswered:
509 call->log->status=LinphoneCallMissed;
514 linphone_call_set_terminated (call);
516 if (cstate == LinphoneCallConnected) {
517 call->log->status=LinphoneCallSuccess;
518 call->media_start_time=time(NULL);
521 if (lc->vtable.call_state_changed)
522 lc->vtable.call_state_changed(lc,call,cstate,message);
523 if (cstate==LinphoneCallReleased){
524 if (call->op!=NULL) {
525 /* so that we cannot have anymore upcalls for SAL
526 concerning this call*/
527 sal_op_release(call->op);
530 linphone_call_unref(call);
535 static void linphone_call_destroy(LinphoneCall *obj)
538 sal_op_release(obj->op);
541 if (obj->ice_session!=NULL) {
542 ice_session_destroy(obj->ice_session);
543 obj->ice_session=NULL;
545 if (obj->resultdesc!=NULL) {
546 sal_media_description_unref(obj->resultdesc);
547 obj->resultdesc=NULL;
549 if (obj->localdesc!=NULL) {
550 sal_media_description_unref(obj->localdesc);
554 sal_op_release(obj->ping_op);
557 ms_free(obj->refer_to);
559 if (obj->owns_call_log)
560 linphone_call_log_destroy(obj->log);
561 if (obj->auth_token) {
562 ms_free(obj->auth_token);
569 * @addtogroup call_control
574 * Increments the call 's reference count.
575 * An application that wishes to retain a pointer to call object
576 * must use this function to unsure the pointer remains
577 * valid. Once the application no more needs this pointer,
578 * it must call linphone_call_unref().
580 LinphoneCall * linphone_call_ref(LinphoneCall *obj){
586 * Decrements the call object reference count.
587 * See linphone_call_ref().
589 void linphone_call_unref(LinphoneCall *obj){
592 linphone_call_destroy(obj);
597 * Returns current parameters associated to the call.
599 const LinphoneCallParams * linphone_call_get_current_params(const LinphoneCall *call){
600 return &call->current_params;
603 static bool_t is_video_active(const SalStreamDescription *sd){
604 return sd->port!=0 && sd->dir!=SalStreamInactive;
608 * Returns call parameters proposed by remote.
610 * This is useful when receiving an incoming call, to know whether the remote party
611 * supports video, encryption or whatever.
613 const LinphoneCallParams * linphone_call_get_remote_params(LinphoneCall *call){
614 LinphoneCallParams *cp=&call->remote_params;
615 memset(cp,0,sizeof(*cp));
617 SalMediaDescription *md=sal_call_get_remote_media_description(call->op);
619 SalStreamDescription *asd,*vsd,*secure_asd,*secure_vsd;
621 asd=sal_media_description_find_stream(md,SalProtoRtpAvp,SalAudio);
622 vsd=sal_media_description_find_stream(md,SalProtoRtpAvp,SalVideo);
623 secure_asd=sal_media_description_find_stream(md,SalProtoRtpSavp,SalAudio);
624 secure_vsd=sal_media_description_find_stream(md,SalProtoRtpSavp,SalVideo);
626 cp->has_video=is_video_active(secure_vsd);
627 if (secure_asd || asd==NULL)
628 cp->media_encryption=LinphoneMediaEncryptionSRTP;
630 cp->has_video=is_video_active(vsd);
639 * Returns the remote address associated to this call
642 const LinphoneAddress * linphone_call_get_remote_address(const LinphoneCall *call){
643 return call->dir==LinphoneCallIncoming ? call->log->from : call->log->to;
647 * Returns the remote address associated to this call as a string.
649 * The result string must be freed by user using ms_free().
651 char *linphone_call_get_remote_address_as_string(const LinphoneCall *call){
652 return linphone_address_as_string(linphone_call_get_remote_address(call));
656 * Retrieves the call's current state.
658 LinphoneCallState linphone_call_get_state(const LinphoneCall *call){
663 * Returns the reason for a call termination (either error or normal termination)
665 LinphoneReason linphone_call_get_reason(const LinphoneCall *call){
670 * Get the user_pointer in the LinphoneCall
672 * @ingroup call_control
674 * return user_pointer an opaque user pointer that can be retrieved at any time
676 void *linphone_call_get_user_pointer(LinphoneCall *call)
678 return call->user_pointer;
682 * Set the user_pointer in the LinphoneCall
684 * @ingroup call_control
686 * the user_pointer is an opaque user pointer that can be retrieved at any time in the LinphoneCall
688 void linphone_call_set_user_pointer(LinphoneCall *call, void *user_pointer)
690 call->user_pointer = user_pointer;
694 * Returns the call log associated to this call.
696 LinphoneCallLog *linphone_call_get_call_log(const LinphoneCall *call){
701 * Returns the refer-to uri (if the call was transfered).
703 const char *linphone_call_get_refer_to(const LinphoneCall *call){
704 return call->refer_to;
708 * Returns direction of the call (incoming or outgoing).
710 LinphoneCallDir linphone_call_get_dir(const LinphoneCall *call){
711 return call->log->dir;
715 * Returns the far end's user agent description string, if available.
717 const char *linphone_call_get_remote_user_agent(LinphoneCall *call){
719 return sal_op_get_remote_ua (call->op);
725 * Returns true if this calls has received a transfer that has not been
727 * Pending transfers are executed when this call is being paused or closed,
728 * locally or by remote endpoint.
729 * If the call is already paused while receiving the transfer request, the
730 * transfer immediately occurs.
732 bool_t linphone_call_has_transfer_pending(const LinphoneCall *call){
733 return call->refer_pending;
737 * Returns call's duration in seconds.
739 int linphone_call_get_duration(const LinphoneCall *call){
740 if (call->media_start_time==0) return 0;
741 return time(NULL)-call->media_start_time;
745 * Returns the call object this call is replacing, if any.
746 * Call replacement can occur during call transfers.
747 * By default, the core automatically terminates the replaced call and accept the new one.
748 * This function allows the application to know whether a new incoming call is a one that replaces another one.
750 LinphoneCall *linphone_call_get_replaced_call(LinphoneCall *call){
751 SalOp *op=sal_call_get_replaces(call->op);
753 return (LinphoneCall*)sal_op_get_user_pointer(op);
759 * Indicate whether camera input should be sent to remote end.
761 void linphone_call_enable_camera (LinphoneCall *call, bool_t enable){
763 if (call->videostream!=NULL && call->videostream->ticker!=NULL){
764 LinphoneCore *lc=call->core;
765 MSWebCam *nowebcam=get_nowebcam_device();
766 if (call->camera_active!=enable && lc->video_conf.device!=nowebcam){
767 video_stream_change_camera(call->videostream,
768 enable ? lc->video_conf.device : nowebcam);
771 call->camera_active=enable;
776 * Take a photo of currently received video and write it into a jpeg file.
778 int linphone_call_take_video_snapshot(LinphoneCall *call, const char *file){
780 if (call->videostream!=NULL && call->videostream->jpegwriter!=NULL){
781 return ms_filter_call_method(call->videostream->jpegwriter,MS_JPEG_WRITER_TAKE_SNAPSHOT,(void*)file);
783 ms_warning("Cannot take snapshot: no currently running video stream on this call.");
790 * Returns TRUE if camera pictures are sent to the remote party.
792 bool_t linphone_call_camera_enabled (const LinphoneCall *call){
793 return call->camera_active;
797 * Enable video stream.
799 void linphone_call_params_enable_video(LinphoneCallParams *cp, bool_t enabled){
800 cp->has_video=enabled;
803 const PayloadType* linphone_call_params_get_used_audio_codec(const LinphoneCallParams *cp) {
804 return cp->audio_codec;
807 const PayloadType* linphone_call_params_get_used_video_codec(const LinphoneCallParams *cp) {
808 return cp->video_codec;
812 * Returns whether video is enabled.
814 bool_t linphone_call_params_video_enabled(const LinphoneCallParams *cp){
815 return cp->has_video;
818 enum LinphoneMediaEncryption linphone_call_params_get_media_encryption(const LinphoneCallParams *cp) {
819 return cp->media_encryption;
822 void linphone_call_params_set_media_encryption(LinphoneCallParams *cp, enum LinphoneMediaEncryption e) {
823 cp->media_encryption = e;
828 * Enable sending of real early media (during outgoing calls).
830 void linphone_call_params_enable_early_media_sending(LinphoneCallParams *cp, bool_t enabled){
831 cp->real_early_media=enabled;
834 bool_t linphone_call_params_early_media_sending_enabled(const LinphoneCallParams *cp){
835 return cp->real_early_media;
839 * Returns true if the call is part of the locally managed conference.
841 bool_t linphone_call_params_local_conference_mode(const LinphoneCallParams *cp){
842 return cp->in_conference;
846 * Refine bandwidth settings for this call by setting a bandwidth limit for audio streams.
847 * As a consequence, codecs whose bitrates are not compatible with this limit won't be used.
849 void linphone_call_params_set_audio_bandwidth_limit(LinphoneCallParams *cp, int bandwidth){
850 cp->audio_bw=bandwidth;
855 * Request remote side to send us a Video Fast Update.
857 void linphone_call_send_vfu_request(LinphoneCall *call)
859 if (LinphoneCallStreamsRunning == linphone_call_get_state(call))
860 sal_call_send_vfu_request(call->op);
867 LinphoneCallParams * linphone_call_params_copy(const LinphoneCallParams *cp){
868 LinphoneCallParams *ncp=ms_new0(LinphoneCallParams,1);
869 memcpy(ncp,cp,sizeof(LinphoneCallParams));
876 void linphone_call_params_destroy(LinphoneCallParams *p){
885 #ifdef TEST_EXT_RENDERER
886 static void rendercb(void *data, const MSPicture *local, const MSPicture *remote){
887 ms_message("rendercb, local buffer=%p, remote buffer=%p",
888 local ? local->planes[0] : NULL, remote? remote->planes[0] : NULL);
893 static void video_stream_event_cb(void *user_pointer, const MSFilter *f, const unsigned int event_id, const void *args){
894 LinphoneCall* call = (LinphoneCall*) user_pointer;
895 ms_warning("In linphonecall.c: video_stream_event_cb");
897 case MS_VIDEO_DECODER_DECODING_ERRORS:
898 ms_warning("Case is MS_VIDEO_DECODER_DECODING_ERRORS");
899 linphone_call_send_vfu_request(call);
901 case MS_VIDEO_DECODER_FIRST_IMAGE_DECODED:
902 ms_message("First video frame decoded successfully");
903 if (call->nextVideoFrameDecoded._func != NULL)
904 call->nextVideoFrameDecoded._func(call, call->nextVideoFrameDecoded._user_data);
907 ms_warning("Unhandled event %i", event_id);
913 void linphone_call_set_next_video_frame_decoded_callback(LinphoneCall *call, LinphoneCallCbFunc cb, void* user_data) {
914 call->nextVideoFrameDecoded._func = cb;
915 call->nextVideoFrameDecoded._user_data = user_data;
917 ms_filter_call_method_noarg(call->videostream->decoder, MS_VIDEO_DECODER_RESET_FIRST_IMAGE_NOTIFICATION);
921 void linphone_call_init_media_streams(LinphoneCall *call){
922 LinphoneCore *lc=call->core;
923 SalMediaDescription *md=call->localdesc;
924 AudioStream *audiostream;
926 call->audiostream=audiostream=audio_stream_new(md->streams[0].port,linphone_core_ipv6_enabled(lc));
927 if (linphone_core_echo_limiter_enabled(lc)){
928 const char *type=lp_config_get_string(lc->config,"sound","el_type","mic");
929 if (strcasecmp(type,"mic")==0)
930 audio_stream_enable_echo_limiter(audiostream,ELControlMic);
931 else if (strcasecmp(type,"full")==0)
932 audio_stream_enable_echo_limiter(audiostream,ELControlFull);
934 audio_stream_enable_gain_control(audiostream,TRUE);
935 if (linphone_core_echo_cancellation_enabled(lc)){
936 int len,delay,framesize;
937 const char *statestr=lp_config_get_string(lc->config,"sound","ec_state",NULL);
938 len=lp_config_get_int(lc->config,"sound","ec_tail_len",0);
939 delay=lp_config_get_int(lc->config,"sound","ec_delay",0);
940 framesize=lp_config_get_int(lc->config,"sound","ec_framesize",0);
941 audio_stream_set_echo_canceller_params(audiostream,len,delay,framesize);
942 if (statestr && audiostream->ec){
943 ms_filter_call_method(audiostream->ec,MS_ECHO_CANCELLER_SET_STATE_STRING,(void*)statestr);
946 audio_stream_enable_automatic_gain_control(audiostream,linphone_core_agc_enabled(lc));
948 int enabled=lp_config_get_int(lc->config,"sound","noisegate",0);
949 audio_stream_enable_noise_gate(audiostream,enabled);
953 RtpTransport *artp=lc->rtptf->audio_rtp_func(lc->rtptf->audio_rtp_func_data, call->audio_port);
954 RtpTransport *artcp=lc->rtptf->audio_rtcp_func(lc->rtptf->audio_rtcp_func_data, call->audio_port+1);
955 rtp_session_set_transports(audiostream->session,artp,artcp);
957 if (linphone_core_get_firewall_policy(lc) == LinphonePolicyUseIce){
958 rtp_session_set_pktinfo(audiostream->session,TRUE);
959 audiostream->ice_check_list = call->localdesc->streams[0].ice_check_list;
960 ice_check_list_register_success_cb(audiostream->ice_check_list, audio_stream_set_remote_from_ice, audiostream);
963 call->audiostream_app_evq = ortp_ev_queue_new();
964 rtp_session_register_event_queue(audiostream->session,call->audiostream_app_evq);
968 if ((lc->video_conf.display || lc->video_conf.capture) && md->streams[1].port>0){
969 int video_recv_buf_size=lp_config_get_int(lc->config,"video","recv_buf_size",0);
970 call->videostream=video_stream_new(md->streams[1].port,linphone_core_ipv6_enabled(lc));
971 video_stream_enable_display_filter_auto_rotate(call->videostream, lp_config_get_int(lc->config,"video","display_filter_auto_rotate",0));
972 if (video_recv_buf_size>0) rtp_session_set_recv_buf_size(call->videostream->session,video_recv_buf_size);
974 if( lc->video_conf.displaytype != NULL)
975 video_stream_set_display_filter_name(call->videostream,lc->video_conf.displaytype);
976 video_stream_set_event_callback(call->videostream,video_stream_event_cb, call);
978 RtpTransport *vrtp=lc->rtptf->video_rtp_func(lc->rtptf->video_rtp_func_data, call->video_port);
979 RtpTransport *vrtcp=lc->rtptf->video_rtcp_func(lc->rtptf->video_rtcp_func_data, call->video_port+1);
980 rtp_session_set_transports(call->videostream->session,vrtp,vrtcp);
982 if (linphone_core_get_firewall_policy(lc) == LinphonePolicyUseIce){
983 rtp_session_set_pktinfo(call->videostream->session,TRUE);
984 call->videostream->ice_check_list = call->localdesc->streams[1].ice_check_list;
985 ice_check_list_register_success_cb(call->videostream->ice_check_list, video_stream_set_remote_from_ice, call->videostream);
987 call->videostream_app_evq = ortp_ev_queue_new();
988 rtp_session_register_event_queue(call->videostream->session,call->videostream_app_evq);
989 #ifdef TEST_EXT_RENDERER
990 video_stream_set_render_callback(call->videostream,rendercb,NULL);
994 call->videostream=NULL;
999 static int dtmf_tab[16]={'0','1','2','3','4','5','6','7','8','9','*','#','A','B','C','D'};
1001 static void linphone_core_dtmf_received(RtpSession* s, int dtmf, void* user_data){
1002 LinphoneCore* lc = (LinphoneCore*)user_data;
1003 if (dtmf<0 || dtmf>15){
1004 ms_warning("Bad dtmf value %i",dtmf);
1007 if (lc->vtable.dtmf_received != NULL)
1008 lc->vtable.dtmf_received(lc, linphone_core_get_current_call(lc), dtmf_tab[dtmf]);
1011 static void parametrize_equalizer(LinphoneCore *lc, AudioStream *st){
1013 MSFilter *f=st->equalizer;
1014 int enabled=lp_config_get_int(lc->config,"sound","eq_active",0);
1015 const char *gains=lp_config_get_string(lc->config,"sound","eq_gains",NULL);
1016 ms_filter_call_method(f,MS_EQUALIZER_SET_ACTIVE,&enabled);
1022 if (sscanf(gains,"%f:%f:%f %n",&g.frequency,&g.gain,&g.width,&bytes)==3){
1023 ms_message("Read equalizer gains: %f(~%f) --> %f",g.frequency,g.width,g.gain);
1024 ms_filter_call_method(f,MS_EQUALIZER_SET_GAIN,&g);
1033 void _post_configure_audio_stream(AudioStream *st, LinphoneCore *lc, bool_t muted){
1034 float mic_gain=lp_config_get_float(lc->config,"sound","mic_gain",1);
1037 float ng_thres=lp_config_get_float(lc->config,"sound","ng_thres",0.05);
1038 float ng_floorgain=lp_config_get_float(lc->config,"sound","ng_floorgain",0);
1039 int dc_removal=lp_config_get_int(lc->config,"sound","dc_removal",0);
1042 audio_stream_set_mic_gain(st,mic_gain);
1044 audio_stream_set_mic_gain(st,0);
1046 recv_gain = lc->sound_conf.soft_play_lev;
1047 if (recv_gain != 0) {
1048 linphone_core_set_playback_gain_db (lc,recv_gain);
1052 ms_filter_call_method(st->volsend,MS_VOLUME_REMOVE_DC,&dc_removal);
1053 float speed=lp_config_get_float(lc->config,"sound","el_speed",-1);
1054 thres=lp_config_get_float(lc->config,"sound","el_thres",-1);
1055 float force=lp_config_get_float(lc->config,"sound","el_force",-1);
1056 int sustain=lp_config_get_int(lc->config,"sound","el_sustain",-1);
1057 float transmit_thres=lp_config_get_float(lc->config,"sound","el_transmit_thres",-1);
1060 if (speed==-1) speed=0.03;
1061 if (force==-1) force=25;
1062 ms_filter_call_method(f,MS_VOLUME_SET_EA_SPEED,&speed);
1063 ms_filter_call_method(f,MS_VOLUME_SET_EA_FORCE,&force);
1065 ms_filter_call_method(f,MS_VOLUME_SET_EA_THRESHOLD,&thres);
1067 ms_filter_call_method(f,MS_VOLUME_SET_EA_SUSTAIN,&sustain);
1068 if (transmit_thres!=-1)
1069 ms_filter_call_method(f,MS_VOLUME_SET_EA_TRANSMIT_THRESHOLD,&transmit_thres);
1071 ms_filter_call_method(st->volsend,MS_VOLUME_SET_NOISE_GATE_THRESHOLD,&ng_thres);
1072 ms_filter_call_method(st->volsend,MS_VOLUME_SET_NOISE_GATE_FLOORGAIN,&ng_floorgain);
1075 /* parameters for a limited noise-gate effect, using echo limiter threshold */
1076 float floorgain = 1/mic_gain;
1077 int spk_agc=lp_config_get_int(lc->config,"sound","speaker_agc_enabled",0);
1078 ms_filter_call_method(st->volrecv, MS_VOLUME_ENABLE_AGC, &spk_agc);
1079 ms_filter_call_method(st->volrecv,MS_VOLUME_SET_NOISE_GATE_THRESHOLD,&ng_thres);
1080 ms_filter_call_method(st->volrecv,MS_VOLUME_SET_NOISE_GATE_FLOORGAIN,&floorgain);
1082 parametrize_equalizer(lc,st);
1085 static void post_configure_audio_streams(LinphoneCall*call){
1086 AudioStream *st=call->audiostream;
1087 LinphoneCore *lc=call->core;
1088 _post_configure_audio_stream(st,lc,call->audio_muted);
1089 if (lc->vtable.dtmf_received!=NULL){
1090 /* replace by our default action*/
1091 audio_stream_play_received_dtmfs(call->audiostream,FALSE);
1092 rtp_session_signal_connect(call->audiostream->session,"telephone-event",(RtpCallback)linphone_core_dtmf_received,(unsigned long)lc);
1096 static RtpProfile *make_profile(LinphoneCall *call, const SalMediaDescription *md, const SalStreamDescription *desc, int *used_pt){
1099 RtpProfile *prof=rtp_profile_new("Call profile");
1102 LinphoneCore *lc=call->core;
1106 for(elem=desc->payloads;elem!=NULL;elem=elem->next){
1107 PayloadType *pt=(PayloadType*)elem->data;
1110 if ((pt->flags & PAYLOAD_TYPE_FLAG_CAN_SEND) && first) {
1111 if (desc->type==SalAudio){
1112 linphone_core_update_allocated_audio_bandwidth_in_call(call,pt);
1113 up_ptime=linphone_core_get_upload_ptime(lc);
1115 *used_pt=payload_type_get_number(pt);
1118 if (desc->bandwidth>0) remote_bw=desc->bandwidth;
1119 else if (md->bandwidth>0) {
1120 /*case where b=AS is given globally, not per stream*/
1121 remote_bw=md->bandwidth;
1122 if (desc->type==SalVideo){
1123 remote_bw=get_video_bandwidth(remote_bw,call->audio_bw);
1127 if (desc->type==SalAudio){
1128 bw=get_min_bandwidth(call->audio_bw,remote_bw);
1129 }else bw=get_min_bandwidth(get_video_bandwidth(linphone_core_get_upload_bandwidth (lc),call->audio_bw),remote_bw);
1130 if (bw>0) pt->normal_bitrate=bw*1000;
1131 else if (desc->type==SalAudio){
1132 pt->normal_bitrate=-1;
1135 up_ptime=desc->ptime;
1139 snprintf(tmp,sizeof(tmp),"ptime=%i",up_ptime);
1140 payload_type_append_send_fmtp(pt,tmp);
1142 number=payload_type_get_number(pt);
1143 if (rtp_profile_get_payload(prof,number)!=NULL){
1144 ms_warning("A payload type with number %i already exists in profile !",number);
1146 rtp_profile_set_payload(prof,number,pt);
1152 static void setup_ring_player(LinphoneCore *lc, LinphoneCall *call){
1153 int pause_time=3000;
1154 audio_stream_play(call->audiostream,lc->sound_conf.ringback_tone);
1155 ms_filter_call_method(call->audiostream->soundread,MS_FILE_PLAYER_LOOP,&pause_time);
1158 #define LINPHONE_RTCP_SDES_TOOL "Linphone-" LINPHONE_VERSION
1160 static bool_t linphone_call_sound_resources_available(LinphoneCall *call){
1161 LinphoneCore *lc=call->core;
1162 LinphoneCall *current=linphone_core_get_current_call(lc);
1163 return !linphone_core_is_in_conference(lc) &&
1164 (current==NULL || current==call);
1166 static int find_crypto_index_from_tag(const SalSrtpCryptoAlgo crypto[],unsigned char tag) {
1168 for(i=0; i<SAL_CRYPTO_ALGO_MAX; i++) {
1169 if (crypto[i].tag == tag) {
1175 static void linphone_call_start_audio_stream(LinphoneCall *call, const char *cname, bool_t muted, bool_t send_ringbacktone, bool_t use_arc){
1176 LinphoneCore *lc=call->core;
1177 int jitt_comp=lc->rtp_conf.audio_jitt_comp;
1179 /* look for savp stream first */
1180 const SalStreamDescription *stream=sal_media_description_find_stream(call->resultdesc,
1181 SalProtoRtpSavp,SalAudio);
1182 /* no savp audio stream, use avp */
1184 stream=sal_media_description_find_stream(call->resultdesc,
1185 SalProtoRtpAvp,SalAudio);
1187 if (stream && stream->dir!=SalStreamInactive && stream->port!=0){
1188 MSSndCard *playcard=lc->sound_conf.lsd_card ?
1189 lc->sound_conf.lsd_card : lc->sound_conf.play_sndcard;
1190 MSSndCard *captcard=lc->sound_conf.capt_sndcard;
1191 const char *playfile=lc->play_file;
1192 const char *recfile=lc->rec_file;
1193 call->audio_profile=make_profile(call,call->resultdesc,stream,&used_pt);
1197 call->current_params.audio_codec = rtp_profile_get_payload(call->audio_profile, used_pt);
1198 if (playcard==NULL) {
1199 ms_warning("No card defined for playback !");
1201 if (captcard==NULL) {
1202 ms_warning("No card defined for capture !");
1204 /*Replace soundcard filters by inactive file players or recorders
1205 when placed in recvonly or sendonly mode*/
1206 if (stream->port==0 || stream->dir==SalStreamRecvOnly){
1209 }else if (stream->dir==SalStreamSendOnly){
1213 /*And we will eventually play "playfile" if set by the user*/
1216 if (send_ringbacktone){
1218 playfile=NULL;/* it is setup later*/
1220 /*if playfile are supplied don't use soundcards*/
1221 if (lc->use_files) {
1225 if (call->params.in_conference){
1226 /* first create the graph without soundcard resources*/
1227 captcard=playcard=NULL;
1229 if (!linphone_call_sound_resources_available(call)){
1230 ms_message("Sound resources are used by another call, not using soundcard.");
1231 captcard=playcard=NULL;
1233 use_ec=captcard==NULL ? FALSE : linphone_core_echo_cancellation_enabled(lc);
1234 if (playcard && stream->max_rate>0) ms_snd_card_set_preferred_sample_rate(playcard, stream->max_rate);
1235 if (captcard && stream->max_rate>0) ms_snd_card_set_preferred_sample_rate(captcard, stream->max_rate);
1236 audio_stream_enable_adaptive_bitrate_control(call->audiostream,use_arc);
1237 audio_stream_start_full(
1239 call->audio_profile,
1240 stream->addr[0]!='\0' ? stream->addr : call->resultdesc->addr,
1242 linphone_core_rtcp_enabled(lc) ? (stream->port+1) : 0,
1251 post_configure_audio_streams(call);
1252 if (muted && !send_ringbacktone){
1253 audio_stream_set_mic_gain(call->audiostream,0);
1255 if (stream->dir==SalStreamSendOnly && playfile!=NULL){
1257 ms_filter_call_method(call->audiostream->soundread,MS_FILE_PLAYER_LOOP,&pause_time);
1259 if (send_ringbacktone){
1260 setup_ring_player(lc,call);
1262 audio_stream_set_rtcp_information(call->audiostream, cname, LINPHONE_RTCP_SDES_TOOL);
1264 /* valid local tags are > 0 */
1265 if (stream->proto == SalProtoRtpSavp) {
1266 const SalStreamDescription *local_st_desc=sal_media_description_find_stream(call->localdesc,
1267 SalProtoRtpSavp,SalAudio);
1268 int crypto_idx = find_crypto_index_from_tag(local_st_desc->crypto, stream->crypto_local_tag);
1270 if (crypto_idx >= 0) {
1271 audio_stream_enable_strp(
1273 stream->crypto[0].algo,
1274 local_st_desc->crypto[crypto_idx].master_key,
1275 stream->crypto[0].master_key);
1276 call->audiostream_encrypted=TRUE;
1278 ms_warning("Failed to find local crypto algo with tag: %d", stream->crypto_local_tag);
1279 call->audiostream_encrypted=FALSE;
1281 }else call->audiostream_encrypted=FALSE;
1282 if (call->params.in_conference){
1283 /*transform the graph to connect it to the conference filter */
1284 bool_t mute=stream->dir==SalStreamRecvOnly;
1285 linphone_call_add_to_conf(call, mute);
1287 call->current_params.in_conference=call->params.in_conference;
1288 }else ms_warning("No audio stream accepted ?");
1292 static void linphone_call_start_video_stream(LinphoneCall *call, const char *cname,bool_t all_inputs_muted){
1293 #ifdef VIDEO_ENABLED
1294 LinphoneCore *lc=call->core;
1296 /* look for savp stream first */
1297 const SalStreamDescription *vstream=sal_media_description_find_stream(call->resultdesc,
1298 SalProtoRtpSavp,SalVideo);
1299 /* no savp audio stream, use avp */
1301 vstream=sal_media_description_find_stream(call->resultdesc,
1302 SalProtoRtpAvp,SalVideo);
1304 /* shutdown preview */
1305 if (lc->previewstream!=NULL) {
1306 video_preview_stop(lc->previewstream);
1307 lc->previewstream=NULL;
1310 if (vstream!=NULL && vstream->dir!=SalStreamInactive && vstream->port!=0) {
1311 const char *addr=vstream->addr[0]!='\0' ? vstream->addr : call->resultdesc->addr;
1312 call->video_profile=make_profile(call,call->resultdesc,vstream,&used_pt);
1314 call->current_params.video_codec = rtp_profile_get_payload(call->video_profile, used_pt);
1315 VideoStreamDir dir=VideoStreamSendRecv;
1316 MSWebCam *cam=lc->video_conf.device;
1317 bool_t is_inactive=FALSE;
1319 call->current_params.has_video=TRUE;
1321 video_stream_enable_adaptive_bitrate_control(call->videostream,
1322 linphone_core_adaptive_rate_control_enabled(lc));
1323 video_stream_set_sent_video_size(call->videostream,linphone_core_get_preferred_video_size(lc));
1324 video_stream_enable_self_view(call->videostream,lc->video_conf.selfview);
1325 if (lc->video_window_id!=0)
1326 video_stream_set_native_window_id(call->videostream,lc->video_window_id);
1327 if (lc->preview_window_id!=0)
1328 video_stream_set_native_preview_window_id (call->videostream,lc->preview_window_id);
1329 video_stream_use_preview_video_window (call->videostream,lc->use_preview_window);
1331 if (vstream->dir==SalStreamSendOnly && lc->video_conf.capture ){
1332 cam=get_nowebcam_device();
1333 dir=VideoStreamSendOnly;
1334 }else if (vstream->dir==SalStreamRecvOnly && lc->video_conf.display ){
1335 dir=VideoStreamRecvOnly;
1336 }else if (vstream->dir==SalStreamSendRecv){
1337 if (lc->video_conf.display && lc->video_conf.capture)
1338 dir=VideoStreamSendRecv;
1339 else if (lc->video_conf.display)
1340 dir=VideoStreamRecvOnly;
1342 dir=VideoStreamSendOnly;
1344 ms_warning("video stream is inactive.");
1345 /*either inactive or incompatible with local capabilities*/
1348 if (call->camera_active==FALSE || all_inputs_muted){
1349 cam=get_nowebcam_device();
1352 call->log->video_enabled = TRUE;
1353 video_stream_set_direction (call->videostream, dir);
1354 ms_message("%s lc rotation:%d\n", __FUNCTION__, lc->device_rotation);
1355 video_stream_set_device_rotation(call->videostream, lc->device_rotation);
1356 video_stream_start(call->videostream,
1357 call->video_profile, addr, vstream->port,
1358 linphone_core_rtcp_enabled(lc) ? (vstream->port+1) : 0,
1359 used_pt, lc->rtp_conf.audio_jitt_comp, cam);
1360 video_stream_set_rtcp_information(call->videostream, cname,LINPHONE_RTCP_SDES_TOOL);
1363 if (vstream->proto == SalProtoRtpSavp) {
1364 const SalStreamDescription *local_st_desc=sal_media_description_find_stream(call->localdesc,
1365 SalProtoRtpSavp,SalVideo);
1367 video_stream_enable_strp(
1369 vstream->crypto[0].algo,
1370 local_st_desc->crypto[0].master_key,
1371 vstream->crypto[0].master_key
1373 call->videostream_encrypted=TRUE;
1375 call->videostream_encrypted=FALSE;
1377 }else ms_warning("No video stream accepted.");
1379 ms_warning("No valid video stream defined.");
1384 void linphone_call_start_media_streams(LinphoneCall *call, bool_t all_inputs_muted, bool_t send_ringbacktone){
1385 LinphoneCore *lc=call->core;
1387 call->current_params.audio_codec = NULL;
1388 call->current_params.video_codec = NULL;
1390 LinphoneAddress *me=linphone_core_get_primary_contact_parsed(lc);
1392 bool_t use_arc=linphone_core_adaptive_rate_control_enabled(lc);
1393 #ifdef VIDEO_ENABLED
1394 const SalStreamDescription *vstream=sal_media_description_find_stream(call->resultdesc,
1395 SalProtoRtpAvp,SalVideo);
1398 if(call->audiostream == NULL)
1400 ms_fatal("start_media_stream() called without prior init !");
1403 cname=linphone_address_as_string_uri_only(me);
1405 #if defined(VIDEO_ENABLED)
1406 if (vstream!=NULL && vstream->dir!=SalStreamInactive && vstream->payloads!=NULL){
1407 /*when video is used, do not make adaptive rate control on audio, it is stupid.*/
1411 linphone_call_start_audio_stream(call,cname,all_inputs_muted,send_ringbacktone,use_arc);
1412 call->current_params.has_video=FALSE;
1413 if (call->videostream!=NULL) {
1414 linphone_call_start_video_stream(call,cname,all_inputs_muted);
1417 call->all_muted=all_inputs_muted;
1418 call->playing_ringbacktone=send_ringbacktone;
1419 call->up_bw=linphone_core_get_upload_bandwidth(lc);
1421 if (call->params.media_encryption==LinphoneMediaEncryptionZRTP) {
1422 OrtpZrtpParams params;
1423 /*will be set later when zrtp is activated*/
1424 call->current_params.media_encryption=LinphoneMediaEncryptionNone;
1426 params.zid_file=lc->zrtp_secrets_cache;
1427 audio_stream_enable_zrtp(call->audiostream,¶ms);
1428 }else if (call->params.media_encryption==LinphoneMediaEncryptionSRTP){
1429 call->current_params.media_encryption=linphone_call_are_all_streams_encrypted(call) ?
1430 LinphoneMediaEncryptionSRTP : LinphoneMediaEncryptionNone;
1433 /*also reflect the change if the "wished" params, in order to avoid to propose SAVP or video again
1434 * further in the call, for example during pause,resume, conferencing reINVITEs*/
1435 linphone_call_fix_call_parameters(call);
1440 linphone_address_destroy(me);
1443 static void linphone_call_log_fill_stats(LinphoneCallLog *log, AudioStream *st){
1444 audio_stream_get_local_rtp_stats (st,&log->local_stats);
1445 log->quality=audio_stream_get_average_quality_rating(st);
1448 void linphone_call_stop_media_streams(LinphoneCall *call){
1449 if (call->audiostream!=NULL) {
1450 rtp_session_unregister_event_queue(call->audiostream->session,call->audiostream_app_evq);
1451 ortp_ev_queue_flush(call->audiostream_app_evq);
1452 ortp_ev_queue_destroy(call->audiostream_app_evq);
1454 if (call->audiostream->ec){
1455 const char *state_str=NULL;
1456 ms_filter_call_method(call->audiostream->ec,MS_ECHO_CANCELLER_GET_STATE_STRING,&state_str);
1458 ms_message("Writing echo canceler state, %i bytes",(int)strlen(state_str));
1459 lp_config_set_string(call->core->config,"sound","ec_state",state_str);
1462 linphone_call_log_fill_stats (call->log,call->audiostream);
1463 if (call->endpoint){
1464 linphone_call_remove_from_conf(call);
1466 if (call->audiostream->ice_check_list) ice_check_list_destroy(call->audiostream->ice_check_list);
1467 audio_stream_stop(call->audiostream);
1468 call->audiostream=NULL;
1472 #ifdef VIDEO_ENABLED
1473 if (call->videostream!=NULL){
1474 rtp_session_unregister_event_queue(call->videostream->session,call->videostream_app_evq);
1475 ortp_ev_queue_flush(call->videostream_app_evq);
1476 ortp_ev_queue_destroy(call->videostream_app_evq);
1477 if (call->videostream->ice_check_list) ice_check_list_destroy(call->videostream->ice_check_list);
1478 video_stream_stop(call->videostream);
1479 call->videostream=NULL;
1482 ms_event_queue_skip(call->core->msevq);
1484 if (call->audio_profile){
1485 rtp_profile_clear_all(call->audio_profile);
1486 rtp_profile_destroy(call->audio_profile);
1487 call->audio_profile=NULL;
1489 if (call->video_profile){
1490 rtp_profile_clear_all(call->video_profile);
1491 rtp_profile_destroy(call->video_profile);
1492 call->video_profile=NULL;
1498 void linphone_call_enable_echo_cancellation(LinphoneCall *call, bool_t enable) {
1499 if (call!=NULL && call->audiostream!=NULL && call->audiostream->ec){
1500 bool_t bypass_mode = !enable;
1501 ms_filter_call_method(call->audiostream->ec,MS_ECHO_CANCELLER_SET_BYPASS_MODE,&bypass_mode);
1504 bool_t linphone_call_echo_cancellation_enabled(LinphoneCall *call) {
1505 if (call!=NULL && call->audiostream!=NULL && call->audiostream->ec){
1507 ms_filter_call_method(call->audiostream->ec,MS_ECHO_CANCELLER_GET_BYPASS_MODE,&val);
1510 return linphone_core_echo_cancellation_enabled(call->core);
1514 void linphone_call_enable_echo_limiter(LinphoneCall *call, bool_t val){
1515 if (call!=NULL && call->audiostream!=NULL ) {
1517 const char *type=lp_config_get_string(call->core->config,"sound","el_type","mic");
1518 if (strcasecmp(type,"mic")==0)
1519 audio_stream_enable_echo_limiter(call->audiostream,ELControlMic);
1520 else if (strcasecmp(type,"full")==0)
1521 audio_stream_enable_echo_limiter(call->audiostream,ELControlFull);
1523 audio_stream_enable_echo_limiter(call->audiostream,ELInactive);
1528 bool_t linphone_call_echo_limiter_enabled(const LinphoneCall *call){
1529 if (call!=NULL && call->audiostream!=NULL ){
1530 return call->audiostream->el_type !=ELInactive ;
1532 return linphone_core_echo_limiter_enabled(call->core);
1537 * @addtogroup call_misc
1542 * Returns the measured sound volume played locally (received from remote).
1543 * It is expressed in dbm0.
1545 float linphone_call_get_play_volume(LinphoneCall *call){
1546 AudioStream *st=call->audiostream;
1547 if (st && st->volrecv){
1549 ms_filter_call_method(st->volrecv,MS_VOLUME_GET,&vol);
1553 return LINPHONE_VOLUME_DB_LOWEST;
1557 * Returns the measured sound volume recorded locally (sent to remote).
1558 * It is expressed in dbm0.
1560 float linphone_call_get_record_volume(LinphoneCall *call){
1561 AudioStream *st=call->audiostream;
1562 if (st && st->volsend && !call->audio_muted && call->state==LinphoneCallStreamsRunning){
1564 ms_filter_call_method(st->volsend,MS_VOLUME_GET,&vol);
1568 return LINPHONE_VOLUME_DB_LOWEST;
1572 * Obtain real-time quality rating of the call
1574 * Based on local RTP statistics and RTCP feedback, a quality rating is computed and updated
1575 * during all the duration of the call. This function returns its value at the time of the function call.
1576 * It is expected that the rating is updated at least every 5 seconds or so.
1577 * The rating is a floating point number comprised between 0 and 5.
1579 * 4-5 = good quality <br>
1580 * 3-4 = average quality <br>
1581 * 2-3 = poor quality <br>
1582 * 1-2 = very poor quality <br>
1583 * 0-1 = can't be worse, mostly unusable <br>
1585 * @returns The function returns -1 if no quality measurement is available, for example if no
1586 * active audio stream exist. Otherwise it returns the quality rating.
1588 float linphone_call_get_current_quality(LinphoneCall *call){
1589 if (call->audiostream){
1590 return audio_stream_get_quality_rating(call->audiostream);
1596 * Returns call quality averaged over all the duration of the call.
1598 * See linphone_call_get_current_quality() for more details about quality measurement.
1600 float linphone_call_get_average_quality(LinphoneCall *call){
1601 if (call->audiostream){
1602 return audio_stream_get_average_quality_rating(call->audiostream);
1608 * Access last known statistics for audio stream, for a given call.
1610 const LinphoneCallStats *linphone_call_get_audio_stats(const LinphoneCall *call) {
1611 return &call->stats[LINPHONE_CALL_STATS_AUDIO];
1615 * Access last known statistics for video stream, for a given call.
1617 const LinphoneCallStats *linphone_call_get_video_stats(const LinphoneCall *call) {
1618 return &call->stats[LINPHONE_CALL_STATS_VIDEO];
1626 static void display_bandwidth(RtpSession *as, RtpSession *vs){
1627 ms_message("bandwidth usage: audio=[d=%.1f,u=%.1f] video=[d=%.1f,u=%.1f] kbit/sec",
1628 (as!=NULL) ? (rtp_session_compute_recv_bandwidth(as)*1e-3) : 0,
1629 (as!=NULL) ? (rtp_session_compute_send_bandwidth(as)*1e-3) : 0,
1630 (vs!=NULL) ? (rtp_session_compute_recv_bandwidth(vs)*1e-3) : 0,
1631 (vs!=NULL) ? (rtp_session_compute_send_bandwidth(vs)*1e-3) : 0);
1634 static void linphone_core_disconnected(LinphoneCore *lc, LinphoneCall *call){
1638 from = linphone_call_get_remote_address_as_string(call);
1641 snprintf(temp,sizeof(temp),"Remote end %s seems to have disconnected, the call is going to be closed.",from);
1646 snprintf(temp,sizeof(temp),"Remote end seems to have disconnected, the call is going to be closed.");
1648 if (lc->vtable.display_warning!=NULL)
1649 lc->vtable.display_warning(lc,temp);
1650 linphone_core_terminate_call(lc,call);
1653 void linphone_call_background_tasks(LinphoneCall *call, bool_t one_second_elapsed){
1654 LinphoneCore* lc = call->core;
1655 int disconnect_timeout = linphone_core_get_nortp_timeout(call->core);
1656 bool_t disconnected=FALSE;
1658 if (call->state==LinphoneCallStreamsRunning && one_second_elapsed){
1659 RtpSession *as=NULL,*vs=NULL;
1660 float audio_load=0, video_load=0;
1661 if (call->audiostream!=NULL){
1662 as=call->audiostream->session;
1663 if (call->audiostream->ticker)
1664 audio_load=ms_ticker_get_average_load(call->audiostream->ticker);
1666 if (call->videostream!=NULL){
1667 if (call->videostream->ticker)
1668 video_load=ms_ticker_get_average_load(call->videostream->ticker);
1669 vs=call->videostream->session;
1671 display_bandwidth(as,vs);
1672 ms_message("Thread processing load: audio=%f\tvideo=%f",audio_load,video_load);
1674 #ifdef VIDEO_ENABLED
1675 if (call->videostream!=NULL) {
1676 // Beware that the application queue should not depend on treatments fron the
1677 // mediastreamer queue.
1678 video_stream_iterate(call->videostream);
1680 if (call->videostream_app_evq){
1682 while (NULL != (ev=ortp_ev_queue_get(call->videostream_app_evq))){
1683 OrtpEventType evt=ortp_event_get_type(ev);
1684 OrtpEventData *evd=ortp_event_get_data(ev);
1685 if (evt == ORTP_EVENT_ZRTP_ENCRYPTION_CHANGED){
1686 linphone_call_videostream_encryption_changed(call, evd->info.zrtp_stream_encrypted);
1687 } else if (evt == ORTP_EVENT_RTCP_PACKET_RECEIVED) {
1688 call->stats[LINPHONE_CALL_STATS_VIDEO].round_trip_delay = rtp_session_get_round_trip_propagation(call->videostream->session);
1689 if(call->stats[LINPHONE_CALL_STATS_VIDEO].received_rtcp != NULL)
1690 freemsg(call->stats[LINPHONE_CALL_STATS_VIDEO].received_rtcp);
1691 call->stats[LINPHONE_CALL_STATS_VIDEO].received_rtcp = evd->packet;
1693 if (lc->vtable.call_stats_updated)
1694 lc->vtable.call_stats_updated(lc, call, &call->stats[LINPHONE_CALL_STATS_VIDEO]);
1695 } else if (evt == ORTP_EVENT_RTCP_PACKET_EMITTED) {
1696 memcpy(&call->stats[LINPHONE_CALL_STATS_VIDEO].jitter_stats, rtp_session_get_jitter_stats(call->videostream->session), sizeof(jitter_stats_t));
1697 if(call->stats[LINPHONE_CALL_STATS_VIDEO].sent_rtcp != NULL)
1698 freemsg(call->stats[LINPHONE_CALL_STATS_VIDEO].sent_rtcp);
1699 call->stats[LINPHONE_CALL_STATS_VIDEO].sent_rtcp = evd->packet;
1701 if (lc->vtable.call_stats_updated)
1702 lc->vtable.call_stats_updated(lc, call, &call->stats[LINPHONE_CALL_STATS_VIDEO]);
1704 ortp_event_destroy(ev);
1709 if (call->audiostream!=NULL) {
1710 // Beware that the application queue should not depend on treatments fron the
1711 // mediastreamer queue.
1712 audio_stream_iterate(call->audiostream);
1714 if (call->audiostream_app_evq){
1716 while (NULL != (ev=ortp_ev_queue_get(call->audiostream_app_evq))){
1717 OrtpEventType evt=ortp_event_get_type(ev);
1718 OrtpEventData *evd=ortp_event_get_data(ev);
1719 if (evt == ORTP_EVENT_ZRTP_ENCRYPTION_CHANGED){
1720 linphone_call_audiostream_encryption_changed(call, evd->info.zrtp_stream_encrypted);
1721 } else if (evt == ORTP_EVENT_ZRTP_SAS_READY) {
1722 linphone_call_audiostream_auth_token_ready(call, evd->info.zrtp_sas.sas, evd->info.zrtp_sas.verified);
1723 } else if (evt == ORTP_EVENT_RTCP_PACKET_RECEIVED) {
1724 call->stats[LINPHONE_CALL_STATS_AUDIO].round_trip_delay = rtp_session_get_round_trip_propagation(call->audiostream->session);
1725 if(call->stats[LINPHONE_CALL_STATS_AUDIO].received_rtcp != NULL)
1726 freemsg(call->stats[LINPHONE_CALL_STATS_AUDIO].received_rtcp);
1727 call->stats[LINPHONE_CALL_STATS_AUDIO].received_rtcp = evd->packet;
1729 if (lc->vtable.call_stats_updated)
1730 lc->vtable.call_stats_updated(lc, call, &call->stats[LINPHONE_CALL_STATS_AUDIO]);
1731 } else if (evt == ORTP_EVENT_RTCP_PACKET_EMITTED) {
1732 memcpy(&call->stats[LINPHONE_CALL_STATS_AUDIO].jitter_stats, rtp_session_get_jitter_stats(call->audiostream->session), sizeof(jitter_stats_t));
1733 if(call->stats[LINPHONE_CALL_STATS_AUDIO].sent_rtcp != NULL)
1734 freemsg(call->stats[LINPHONE_CALL_STATS_AUDIO].sent_rtcp);
1735 call->stats[LINPHONE_CALL_STATS_AUDIO].sent_rtcp = evd->packet;
1737 if (lc->vtable.call_stats_updated)
1738 lc->vtable.call_stats_updated(lc, call, &call->stats[LINPHONE_CALL_STATS_AUDIO]);
1740 ortp_event_destroy(ev);
1744 if (call->state==LinphoneCallStreamsRunning && one_second_elapsed && call->audiostream!=NULL && disconnect_timeout>0 )
1745 disconnected=!audio_stream_alive(call->audiostream,disconnect_timeout);
1747 linphone_core_disconnected(call->core,call);
1750 void linphone_call_log_completed(LinphoneCall *call){
1751 LinphoneCore *lc=call->core;
1753 call->log->duration=time(NULL)-call->start_time;
1755 if (call->log->status==LinphoneCallMissed){
1758 info=ortp_strdup_printf(ngettext("You have missed %i call.",
1759 "You have missed %i calls.", lc->missed_calls),
1761 if (lc->vtable.display_status!=NULL)
1762 lc->vtable.display_status(lc,info);
1765 lc->call_logs=ms_list_prepend(lc->call_logs,(void *)call->log);
1766 if (ms_list_size(lc->call_logs)>lc->max_call_logs){
1767 MSList *elem,*prevelem=NULL;
1768 /*find the last element*/
1769 for(elem=lc->call_logs;elem!=NULL;elem=elem->next){
1773 linphone_call_log_destroy((LinphoneCallLog*)elem->data);
1774 lc->call_logs=ms_list_remove_link(lc->call_logs,elem);
1776 if (lc->vtable.call_log_updated!=NULL){
1777 lc->vtable.call_log_updated(lc,call->log);
1779 call_logs_write_to_config_file(lc);
1782 LinphoneCallState linphone_call_get_transfer_state(LinphoneCall *call) {
1783 return call->transfer_state;
1786 void linphone_call_set_transfer_state(LinphoneCall* call, LinphoneCallState state) {
1787 if (state != call->transfer_state) {
1788 LinphoneCore* lc = call->core;
1789 call->transfer_state = state;
1790 if (lc->vtable.transfer_state_changed)
1791 lc->vtable.transfer_state_changed(lc, call, state);