sjero.net Git - linphone/blob - coreapi/linphonecall.c

   1
   2 /*
   3 linphone
   4 Copyright (C) 2010  Belledonne Communications SARL
   5  (simon.morlat@linphone.org)
   6
   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.
  11
  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.
  16
  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.
  20 */
  21 #ifdef WIN32
  22 #include <time.h>
  23 #endif
  24 #include "linphonecore.h"
  25 #include "sipsetup.h"
  26 #include "lpconfig.h"
  27 #include "private.h"
  28 #include <ortp/event.h>
  29 #include <ortp/b64.h>
  30
  31
  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"
  39
  40 #ifdef VIDEO_ENABLED
  41 static MSWebCam *get_nowebcam_device(){
  42         return ms_web_cam_manager_get_cam(ms_web_cam_manager_get(),"StaticImage: Static picture");
  43 }
  44 #endif
  45
  46 static bool_t generate_b64_crypto_key(int key_length, char* key_out) {
  47         int b64_size;
  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");
  51                 free(tmp);
  52                 return FALSE;
  53         }
  54
  55         b64_size = b64_encode((const char*)tmp, key_length, NULL, 0);
  56         if (b64_size == 0) {
  57                 ms_error("Failed to b64 encode key");
  58                 free(tmp);
  59                 return FALSE;
  60         }
  61         key_out[b64_size] = '\0';
  62         b64_encode((const char*)tmp, key_length, key_out, 40);
  63         free(tmp);
  64         return TRUE;
  65 }
  66
  67 LinphoneCore *linphone_call_get_core(const LinphoneCall *call){
  68         return call->core;
  69 }
  70
  71 const LinphoneCallStats *linphone_call_get_audio_stats(const LinphoneCall *call) {
  72         return &call->stats[LINPHONE_CALL_STATS_AUDIO];
  73 }
  74
  75 const LinphoneCallStats *linphone_call_get_video_stats(const LinphoneCall *call) {
  76         return &call->stats[LINPHONE_CALL_STATS_VIDEO];
  77 }
  78
  79 const char* linphone_call_get_authentication_token(LinphoneCall *call){
  80         return call->auth_token;
  81 }
  82
  83 bool_t linphone_call_get_authentication_token_verified(LinphoneCall *call){
  84         return call->auth_token_verified;
  85 }
  86
  87 static bool_t linphone_call_are_all_streams_encrypted(LinphoneCall *call) {
  88         // Check ZRTP encryption in audiostream
  89         if (!call->audiostream_encrypted) {
  90                 return FALSE;
  91         }
  92
  93 #ifdef VIDEO_ENABLED
  94         // If video enabled, check ZRTP encryption in videostream
  95         const LinphoneCallParams *params=linphone_call_get_current_params(call);
  96         if (params->has_video && !call->videostream_encrypted) {
  97                 return FALSE;
  98         }
  99 #endif
 100
 101         return TRUE;
 102 }
 103
 104 void propagate_encryption_changed(LinphoneCall *call){
 105         LinphoneCore *lc=call->core;
 106         if (!linphone_call_are_all_streams_encrypted(call)) {
 107                 ms_message("Some streams are not encrypted");
 108                 call->current_params.media_encryption=LinphoneMediaEncryptionNone;
 109                 if (lc->vtable.call_encryption_changed)
 110                         lc->vtable.call_encryption_changed(call->core, call, FALSE, call->auth_token);
 111         } else {
 112                 ms_message("All streams are encrypted");
 113                 call->current_params.media_encryption=LinphoneMediaEncryptionZRTP;
 114                 if (lc->vtable.call_encryption_changed)
 115                         lc->vtable.call_encryption_changed(call->core, call, TRUE, call->auth_token);
 116         }
 117 }
 118
 119 #ifdef VIDEO_ENABLED
 120 static void linphone_call_videostream_encryption_changed(void *data, bool_t encrypted){
 121         ms_message("Video stream is %s", encrypted ? "encrypted" : "not encrypted");
 122
 123         LinphoneCall *call = (LinphoneCall *)data;
 124         call->videostream_encrypted=encrypted;
 125         propagate_encryption_changed(call);
 126 }
 127 #endif
 128
 129 static void linphone_call_audiostream_encryption_changed(void *data, bool_t encrypted) {
 130         char status[255]={0};
 131         ms_message("Audio stream is %s ", encrypted ? "encrypted" : "not encrypted");
 132
 133         LinphoneCall *call = (LinphoneCall *)data;
 134         call->audiostream_encrypted=encrypted;
 135
 136         if (encrypted && call->core->vtable.display_status != NULL) {
 137                 snprintf(status,sizeof(status)-1,_("Authentication token is %s"),call->auth_token);
 138                  call->core->vtable.display_status(call->core, status);
 139         }
 140
 141         propagate_encryption_changed(call);
 142
 143
 144 #ifdef VIDEO_ENABLED
 145         // Enable video encryption
 146         const LinphoneCallParams *params=linphone_call_get_current_params(call);
 147         if (params->has_video) {
 148                 ms_message("Trying to enable encryption on video stream");
 149                 OrtpZrtpParams params;
 150                 params.zid_file=NULL; //unused
 151                 video_stream_enable_zrtp(call->videostream,call->audiostream,&params);
 152         }
 153 #endif
 154 }
 155
 156
 157 static void linphone_call_audiostream_auth_token_ready(void *data, const char* auth_token, bool_t verified) {
 158         LinphoneCall *call=(LinphoneCall *)data;
 159         if (call->auth_token != NULL)
 160                 ms_free(call->auth_token);
 161
 162         call->auth_token=ms_strdup(auth_token);
 163         call->auth_token_verified=verified;
 164
 165         ms_message("Authentication token is %s (%s)", auth_token, verified?"verified":"unverified");
 166 }
 167
 168 void linphone_call_set_authentication_token_verified(LinphoneCall *call, bool_t verified){
 169         if (call->audiostream==NULL){
 170                 ms_error("linphone_call_set_authentication_token_verified(): No audio stream");
 171         }
 172         if (call->audiostream->ortpZrtpContext==NULL){
 173                 ms_error("linphone_call_set_authentication_token_verified(): No zrtp context.");
 174         }
 175         if (!call->auth_token_verified && verified){
 176                 ortp_zrtp_sas_verified(call->audiostream->ortpZrtpContext);
 177         }else if (call->auth_token_verified && !verified){
 178                 ortp_zrtp_sas_reset_verified(call->audiostream->ortpZrtpContext);
 179         }
 180         call->auth_token_verified=verified;
 181         propagate_encryption_changed(call);
 182 }
 183
 184 static MSList *make_codec_list(LinphoneCore *lc, const MSList *codecs, int bandwidth_limit,int* max_sample_rate){
 185         MSList *l=NULL;
 186         const MSList *it;
 187         if (max_sample_rate) *max_sample_rate=0;
 188         for(it=codecs;it!=NULL;it=it->next){
 189                 PayloadType *pt=(PayloadType*)it->data;
 190                 if (pt->flags & PAYLOAD_TYPE_ENABLED){
 191                         if (bandwidth_limit>0 && !linphone_core_is_payload_type_usable_for_bandwidth(lc,pt,bandwidth_limit)){
 192                                 ms_message("Codec %s/%i eliminated because of audio bandwidth constraint.",pt->mime_type,pt->clock_rate);
 193                                 continue;
 194                         }
 195                         if (linphone_core_check_payload_type_usability(lc,pt)){
 196                                 l=ms_list_append(l,payload_type_clone(pt));
 197                                 if (max_sample_rate && payload_type_get_rate(pt)>*max_sample_rate) *max_sample_rate=payload_type_get_rate(pt);
 198                         }
 199                 }
 200         }
 201         return l;
 202 }
 203
 204 static SalMediaDescription *_create_local_media_description(LinphoneCore *lc, LinphoneCall *call, unsigned int session_id, unsigned int session_ver){
 205         MSList *l;
 206         PayloadType *pt;
 207         int i;
 208         const char *me=linphone_core_get_identity(lc);
 209         LinphoneAddress *addr=linphone_address_new(me);
 210         const char *username=linphone_address_get_username (addr);
 211         SalMediaDescription *md=sal_media_description_new();
 212
 213
 214         md->session_id=session_id;
 215         md->session_ver=session_ver;
 216         md->nstreams=1;
 217         strncpy(md->addr,call->localip,sizeof(md->addr));
 218         strncpy(md->username,username,sizeof(md->username));
 219         md->bandwidth=linphone_core_get_download_bandwidth(lc);
 220
 221         /*set audio capabilities */
 222         strncpy(md->streams[0].addr,call->localip,sizeof(md->streams[0].addr));
 223         md->streams[0].port=call->audio_port;
 224         md->streams[0].proto=(call->params.media_encryption == LinphoneMediaEncryptionSRTP) ?
 225                 SalProtoRtpSavp : SalProtoRtpAvp;
 226         md->streams[0].type=SalAudio;
 227         md->streams[0].ptime=lc->net_conf.down_ptime;
 228         l=make_codec_list(lc,lc->codecs_conf.audio_codecs,call->params.audio_bw,&md->streams[0].max_rate);
 229         pt=payload_type_clone(rtp_profile_get_payload_from_mime(&av_profile,"telephone-event"));
 230         l=ms_list_append(l,pt);
 231         md->streams[0].payloads=l;
 232
 233
 234
 235         if (call->params.has_video){
 236                 md->nstreams++;
 237                 md->streams[1].port=call->video_port;
 238                 md->streams[1].proto=md->streams[0].proto;
 239                 md->streams[1].type=SalVideo;
 240                 l=make_codec_list(lc,lc->codecs_conf.video_codecs,0,NULL);
 241                 md->streams[1].payloads=l;
 242         }
 243
 244         for(i=0; i<md->nstreams; i++) {
 245                 if (md->streams[i].proto == SalProtoRtpSavp) {
 246                         md->streams[i].crypto[0].tag = 1;
 247                         md->streams[i].crypto[0].algo = AES_128_SHA1_80;
 248                         if (!generate_b64_crypto_key(30, md->streams[i].crypto[0].master_key))
 249                                 md->streams[i].crypto[0].algo = 0;
 250                         md->streams[i].crypto[1].tag = 2;
 251                         md->streams[i].crypto[1].algo = AES_128_SHA1_32;
 252                         if (!generate_b64_crypto_key(30, md->streams[i].crypto[1].master_key))
 253                                 md->streams[i].crypto[1].algo = 0;
 254                         md->streams[i].crypto[2].algo = 0;
 255                 }
 256         }
 257
 258         linphone_address_destroy(addr);
 259         return md;
 260 }
 261
 262 void update_local_media_description(LinphoneCore *lc, LinphoneCall *call){
 263         SalMediaDescription *md=call->localdesc;
 264         if (md== NULL) {
 265                 call->localdesc = create_local_media_description(lc,call);
 266         } else {
 267                 call->localdesc = _create_local_media_description(lc,call,md->session_id,md->session_ver+1);
 268                 sal_media_description_unref(md);
 269         }
 270 }
 271
 272 SalMediaDescription *create_local_media_description(LinphoneCore *lc, LinphoneCall *call){
 273         unsigned int id=rand() & 0xfff;
 274         return _create_local_media_description(lc,call,id,id);
 275 }
 276
 277 static int find_port_offset(LinphoneCore *lc){
 278         int offset;
 279         MSList *elem;
 280         int audio_port;
 281         bool_t already_used=FALSE;
 282         for(offset=0;offset<100;offset+=2){
 283                 audio_port=linphone_core_get_audio_port (lc)+offset;
 284                 already_used=FALSE;
 285                 for(elem=lc->calls;elem!=NULL;elem=elem->next){
 286                         LinphoneCall *call=(LinphoneCall*)elem->data;
 287                         if (call->audio_port==audio_port) {
 288                                 already_used=TRUE;
 289                                 break;
 290                         }
 291                 }
 292                 if (!already_used) break;
 293         }
 294         if (offset==100){
 295                 ms_error("Could not find any free port !");
 296                 return -1;
 297         }
 298         return offset;
 299 }
 300
 301 static void linphone_call_init_common(LinphoneCall *call, LinphoneAddress *from, LinphoneAddress *to){
 302         int port_offset;
 303         call->magic=linphone_call_magic;
 304         call->refcnt=1;
 305         call->state=LinphoneCallIdle;
 306         call->transfer_state = LinphoneCallIdle;
 307         call->start_time=time(NULL);
 308         call->media_start_time=0;
 309         call->log=linphone_call_log_new(call, from, to);
 310         call->owns_call_log=TRUE;
 311         linphone_core_notify_all_friends(call->core,LinphoneStatusOnThePhone);
 312         port_offset=find_port_offset (call->core);
 313         if (port_offset==-1) return;
 314         call->audio_port=linphone_core_get_audio_port(call->core)+port_offset;
 315         call->video_port=linphone_core_get_video_port(call->core)+port_offset;
 316         linphone_call_init_stats(&call->stats[LINPHONE_CALL_STATS_AUDIO], LINPHONE_CALL_STATS_AUDIO);
 317         linphone_call_init_stats(&call->stats[LINPHONE_CALL_STATS_VIDEO], LINPHONE_CALL_STATS_VIDEO);
 318 }
 319
 320 void linphone_call_init_stats(LinphoneCallStats *stats, int type) {
 321         stats->type = type;
 322         stats->received_rtcp = NULL;
 323         stats->sent_rtcp = NULL;
 324 }
 325
 326 static void discover_mtu(LinphoneCore *lc, const char *remote){
 327         int mtu;
 328         if (lc->net_conf.mtu==0 ){
 329                 /*attempt to discover mtu*/
 330                 mtu=ms_discover_mtu(remote);
 331                 if (mtu>0){
 332                         ms_set_mtu(mtu);
 333                         ms_message("Discovered mtu is %i, RTP payload max size is %i",
 334                                 mtu, ms_get_payload_max_size());
 335                 }
 336         }
 337 }
 338
 339 LinphoneCall * linphone_call_new_outgoing(struct _LinphoneCore *lc, LinphoneAddress *from, LinphoneAddress *to, const LinphoneCallParams *params)
 340 {
 341         LinphoneCall *call=ms_new0(LinphoneCall,1);
 342         call->dir=LinphoneCallOutgoing;
 343         call->op=sal_op_new(lc->sal);
 344         sal_op_set_user_pointer(call->op,call);
 345         call->core=lc;
 346         linphone_core_get_local_ip(lc,linphone_address_get_domain(to),call->localip);
 347         linphone_call_init_common(call,from,to);
 348         call->params=*params;
 349         call->localdesc=create_local_media_description (lc,call);
 350         call->camera_active=params->has_video;
 351         if (linphone_core_get_firewall_policy(call->core)==LinphonePolicyUseStun)
 352                 linphone_core_run_stun_tests(call->core,call);
 353         discover_mtu(lc,linphone_address_get_domain (to));
 354         if (params->referer){
 355                 sal_call_set_referer(call->op,params->referer->op);
 356                 call->referer=linphone_call_ref(params->referer);
 357         }
 358         return call;
 359 }
 360
 361 LinphoneCall * linphone_call_new_incoming(LinphoneCore *lc, LinphoneAddress *from, LinphoneAddress *to, SalOp *op){
 362         LinphoneCall *call=ms_new0(LinphoneCall,1);
 363         char *from_str;
 364
 365         call->dir=LinphoneCallIncoming;
 366         sal_op_set_user_pointer(op,call);
 367         call->op=op;
 368         call->core=lc;
 369
 370         if (lc->sip_conf.ping_with_options){
 371                 /*the following sends an option request back to the caller so that
 372                  we get a chance to discover our nat'd address before answering.*/
 373                 call->ping_op=sal_op_new(lc->sal);
 374                 from_str=linphone_address_as_string_uri_only(from);
 375                 sal_op_set_route(call->ping_op,sal_op_get_network_origin(op));
 376                 sal_op_set_user_pointer(call->ping_op,call);
 377                 sal_ping(call->ping_op,linphone_core_find_best_identity(lc,from,NULL),from_str);
 378                 ms_free(from_str);
 379         }
 380
 381         linphone_address_clean(from);
 382         linphone_core_get_local_ip(lc,linphone_address_get_domain(from),call->localip);
 383         linphone_call_init_common(call, from, to);
 384         linphone_core_init_default_params(lc, &call->params);
 385         call->params.has_video &= !!lc->video_policy.automatically_accept;
 386         call->localdesc=create_local_media_description (lc,call);
 387         call->camera_active=call->params.has_video;
 388         if (linphone_core_get_firewall_policy(call->core)==LinphonePolicyUseStun)
 389                 linphone_core_run_stun_tests(call->core,call);
 390         discover_mtu(lc,linphone_address_get_domain(from));
 391         return call;
 392 }
 393
 394 /* this function is called internally to get rid of a call.
 395  It performs the following tasks:
 396  - remove the call from the internal list of calls
 397  - update the call logs accordingly
 398 */
 399
 400 static void linphone_call_set_terminated(LinphoneCall *call){
 401         LinphoneCore *lc=call->core;
 402
 403         linphone_core_update_allocated_audio_bandwidth(lc);
 404
 405         call->owns_call_log=FALSE;
 406         linphone_call_log_completed(call);
 407
 408
 409         if (call == lc->current_call){
 410                 ms_message("Resetting the current call");
 411                 lc->current_call=NULL;
 412         }
 413
 414         if (linphone_core_del_call(lc,call) != 0){
 415                 ms_error("Could not remove the call from the list !!!");
 416         }
 417
 418         if (ms_list_size(lc->calls)==0)
 419                 linphone_core_notify_all_friends(lc,lc->presence_mode);
 420
 421         linphone_core_conference_check_uninit(lc);
 422         if (call->ringing_beep){
 423                 linphone_core_stop_dtmf(lc);
 424                 call->ringing_beep=FALSE;
 425         }
 426         if (call->referer){
 427                 linphone_call_unref(call->referer);
 428                 call->referer=NULL;
 429         }
 430 }
 431
 432 void linphone_call_fix_call_parameters(LinphoneCall *call){
 433         call->params.has_video=call->current_params.has_video;
 434         call->params.media_encryption=call->current_params.media_encryption;
 435 }
 436
 437 const char *linphone_call_state_to_string(LinphoneCallState cs){
 438         switch (cs){
 439                 case LinphoneCallIdle:
 440                         return "LinphoneCallIdle";
 441                 case LinphoneCallIncomingReceived:
 442                         return "LinphoneCallIncomingReceived";
 443                 case LinphoneCallOutgoingInit:
 444                         return "LinphoneCallOutgoingInit";
 445                 case LinphoneCallOutgoingProgress:
 446                         return "LinphoneCallOutgoingProgress";
 447                 case LinphoneCallOutgoingRinging:
 448                         return "LinphoneCallOutgoingRinging";
 449                 case LinphoneCallOutgoingEarlyMedia:
 450                         return "LinphoneCallOutgoingEarlyMedia";
 451                 case LinphoneCallConnected:
 452                         return "LinphoneCallConnected";
 453                 case LinphoneCallStreamsRunning:
 454                         return "LinphoneCallStreamsRunning";
 455                 case LinphoneCallPausing:
 456                         return "LinphoneCallPausing";
 457                 case LinphoneCallPaused:
 458                         return "LinphoneCallPaused";
 459                 case LinphoneCallResuming:
 460                         return "LinphoneCallResuming";
 461                 case LinphoneCallRefered:
 462                         return "LinphoneCallRefered";
 463                 case LinphoneCallError:
 464                         return "LinphoneCallError";
 465                 case LinphoneCallEnd:
 466                         return "LinphoneCallEnd";
 467                 case LinphoneCallPausedByRemote:
 468                         return "LinphoneCallPausedByRemote";
 469                 case LinphoneCallUpdatedByRemote:
 470                         return "LinphoneCallUpdatedByRemote";
 471                 case LinphoneCallIncomingEarlyMedia:
 472                         return "LinphoneCallIncomingEarlyMedia";
 473                 case LinphoneCallUpdated:
 474                         return "LinphoneCallUpdated";
 475                 case LinphoneCallReleased:
 476                         return "LinphoneCallReleased";
 477         }
 478         return "undefined state";
 479 }
 480
 481 void linphone_call_set_state(LinphoneCall *call, LinphoneCallState cstate, const char *message){
 482         LinphoneCore *lc=call->core;
 483
 484         if (call->state!=cstate){
 485                 if (call->state==LinphoneCallEnd || call->state==LinphoneCallError){
 486                         if (cstate!=LinphoneCallReleased){
 487                                 ms_warning("Spurious call state change from %s to %s, ignored.",linphone_call_state_to_string(call->state),
 488                                    linphone_call_state_to_string(cstate));
 489                                 return;
 490                         }
 491                 }
 492                 ms_message("Call %p: moving from state %s to %s",call,linphone_call_state_to_string(call->state),
 493                            linphone_call_state_to_string(cstate));
 494                 if (cstate!=LinphoneCallRefered){
 495                         /*LinphoneCallRefered is rather an event, not a state.
 496                          Indeed it does not change the state of the call (still paused or running)*/
 497                         call->state=cstate;
 498                 }
 499                 if (cstate==LinphoneCallEnd || cstate==LinphoneCallError){
 500              switch(call->reason){
 501                                 case LinphoneReasonDeclined:
 502                                         call->log->status=LinphoneCallDeclined;
 503                                 case LinphoneReasonNotAnswered:
 504                                         call->log->status=LinphoneCallMissed;
 505                                 break;
 506                                 default:
 507                                 break;
 508                         }
 509                         linphone_call_set_terminated (call);
 510                 }
 511                 if (cstate == LinphoneCallConnected) {
 512                         call->log->status=LinphoneCallSuccess;
 513                         call->media_start_time=time(NULL);
 514                 }
 515
 516                 if (lc->vtable.call_state_changed)
 517                         lc->vtable.call_state_changed(lc,call,cstate,message);
 518                 if (cstate==LinphoneCallReleased){
 519                         if (call->op!=NULL) {
 520                                 /* so that we cannot have anymore upcalls for SAL
 521                                  concerning this call*/
 522                                 sal_op_release(call->op);
 523                                 call->op=NULL;
 524                         }
 525                         linphone_call_unref(call);
 526                 }
 527         }
 528 }
 529
 530 static void linphone_call_destroy(LinphoneCall *obj)
 531 {
 532         if (obj->op!=NULL) {
 533                 sal_op_release(obj->op);
 534                 obj->op=NULL;
 535         }
 536         if (obj->resultdesc!=NULL) {
 537                 sal_media_description_unref(obj->resultdesc);
 538                 obj->resultdesc=NULL;
 539         }
 540         if (obj->localdesc!=NULL) {
 541                 sal_media_description_unref(obj->localdesc);
 542                 obj->localdesc=NULL;
 543         }
 544         if (obj->ping_op) {
 545                 sal_op_release(obj->ping_op);
 546         }
 547         if (obj->refer_to){
 548                 ms_free(obj->refer_to);
 549         }
 550         if (obj->owns_call_log)
 551                 linphone_call_log_destroy(obj->log);
 552         if (obj->auth_token) {
 553                 ms_free(obj->auth_token);
 554         }
 555
 556         ms_free(obj);
 557 }
 558
 559 /**
 560  * @addtogroup call_control
 561  * @{
 562 **/
 563
 564 /**
 565  * Increments the call 's reference count.
 566  * An application that wishes to retain a pointer to call object
 567  * must use this function to unsure the pointer remains
 568  * valid. Once the application no more needs this pointer,
 569  * it must call linphone_call_unref().
 570 **/
 571 LinphoneCall * linphone_call_ref(LinphoneCall *obj){
 572         obj->refcnt++;
 573         return obj;
 574 }
 575
 576 /**
 577  * Decrements the call object reference count.
 578  * See linphone_call_ref().
 579 **/
 580 void linphone_call_unref(LinphoneCall *obj){
 581         obj->refcnt--;
 582         if (obj->refcnt==0){
 583                 linphone_call_destroy(obj);
 584         }
 585 }
 586
 587 /**
 588  * Returns current parameters associated to the call.
 589 **/
 590 const LinphoneCallParams * linphone_call_get_current_params(const LinphoneCall *call){
 591         return &call->current_params;
 592 }
 593
 594 static bool_t is_video_active(const SalStreamDescription *sd){
 595         return sd->port!=0 && sd->dir!=SalStreamInactive;
 596 }
 597
 598 /**
 599  * Returns call parameters proposed by remote.
 600  *
 601  * This is useful when receiving an incoming call, to know whether the remote party
 602  * supports video, encryption or whatever.
 603 **/
 604 const LinphoneCallParams * linphone_call_get_remote_params(LinphoneCall *call){
 605         LinphoneCallParams *cp=&call->remote_params;
 606         memset(cp,0,sizeof(*cp));
 607         if (call->op){
 608                 SalMediaDescription *md=sal_call_get_remote_media_description(call->op);
 609                 if (md){
 610                         SalStreamDescription *asd,*vsd,*secure_asd,*secure_vsd;
 611
 612                         asd=sal_media_description_find_stream(md,SalProtoRtpAvp,SalAudio);
 613                         vsd=sal_media_description_find_stream(md,SalProtoRtpAvp,SalVideo);
 614                         secure_asd=sal_media_description_find_stream(md,SalProtoRtpSavp,SalAudio);
 615                         secure_vsd=sal_media_description_find_stream(md,SalProtoRtpSavp,SalVideo);
 616                         if (secure_vsd){
 617                                 cp->has_video=is_video_active(secure_vsd);
 618                                 if (secure_asd || asd==NULL)
 619                                         cp->media_encryption=LinphoneMediaEncryptionSRTP;
 620                         }else if (vsd){
 621                                 cp->has_video=is_video_active(vsd);
 622                         }
 623                         return cp;
 624                 }
 625         }
 626         return NULL;
 627 }
 628
 629 /**
 630  * Returns the remote address associated to this call
 631  *
 632 **/
 633 const LinphoneAddress * linphone_call_get_remote_address(const LinphoneCall *call){
 634         return call->dir==LinphoneCallIncoming ? call->log->from : call->log->to;
 635 }
 636
 637 /**
 638  * Returns the remote address associated to this call as a string.
 639  *
 640  * The result string must be freed by user using ms_free().
 641 **/
 642 char *linphone_call_get_remote_address_as_string(const LinphoneCall *call){
 643         return linphone_address_as_string(linphone_call_get_remote_address(call));
 644 }
 645
 646 /**
 647  * Retrieves the call's current state.
 648 **/
 649 LinphoneCallState linphone_call_get_state(const LinphoneCall *call){
 650         return call->state;
 651 }
 652
 653 /**
 654  * Returns the reason for a call termination (either error or normal termination)
 655 **/
 656 LinphoneReason linphone_call_get_reason(const LinphoneCall *call){
 657         return call->reason;
 658 }
 659
 660 /**
 661  * Get the user_pointer in the LinphoneCall
 662  *
 663  * @ingroup call_control
 664  *
 665  * return user_pointer an opaque user pointer that can be retrieved at any time
 666 **/
 667 void *linphone_call_get_user_pointer(LinphoneCall *call)
 668 {
 669         return call->user_pointer;
 670 }
 671
 672 /**
 673  * Set the user_pointer in the LinphoneCall
 674  *
 675  * @ingroup call_control
 676  *
 677  * the user_pointer is an opaque user pointer that can be retrieved at any time in the LinphoneCall
 678 **/
 679 void linphone_call_set_user_pointer(LinphoneCall *call, void *user_pointer)
 680 {
 681         call->user_pointer = user_pointer;
 682 }
 683
 684 /**
 685  * Returns the call log associated to this call.
 686 **/
 687 LinphoneCallLog *linphone_call_get_call_log(const LinphoneCall *call){
 688         return call->log;
 689 }
 690
 691 /**
 692  * Returns the refer-to uri (if the call was transfered).
 693 **/
 694 const char *linphone_call_get_refer_to(const LinphoneCall *call){
 695         return call->refer_to;
 696 }
 697
 698 /**
 699  * Returns direction of the call (incoming or outgoing).
 700 **/
 701 LinphoneCallDir linphone_call_get_dir(const LinphoneCall *call){
 702         return call->log->dir;
 703 }
 704
 705 /**
 706  * Returns the far end's user agent description string, if available.
 707 **/
 708 const char *linphone_call_get_remote_user_agent(LinphoneCall *call){
 709         if (call->op){
 710                 return sal_op_get_remote_ua (call->op);
 711         }
 712         return NULL;
 713 }
 714
 715 /**
 716  * Returns true if this calls has received a transfer that has not been
 717  * executed yet.
 718  * Pending transfers are executed when this call is being paused or closed,
 719  * locally or by remote endpoint.
 720  * If the call is already paused while receiving the transfer request, the
 721  * transfer immediately occurs.
 722 **/
 723 bool_t linphone_call_has_transfer_pending(const LinphoneCall *call){
 724         return call->refer_pending;
 725 }
 726
 727 /**
 728  * Returns call's duration in seconds.
 729 **/
 730 int linphone_call_get_duration(const LinphoneCall *call){
 731         if (call->media_start_time==0) return 0;
 732         return time(NULL)-call->media_start_time;
 733 }
 734
 735 /**
 736  * Returns the call object this call is replacing, if any.
 737  * Call replacement can occur during call transfers.
 738  * By default, the core automatically terminates the replaced call and accept the new one.
 739  * This function allows the application to know whether a new incoming call is a one that replaces another one.
 740 **/
 741 LinphoneCall *linphone_call_get_replaced_call(LinphoneCall *call){
 742         SalOp *op=sal_call_get_replaces(call->op);
 743         if (op){
 744                 return (LinphoneCall*)sal_op_get_user_pointer(op);
 745         }
 746         return NULL;
 747 }
 748
 749 /**
 750  * Indicate whether camera input should be sent to remote end.
 751 **/
 752 void linphone_call_enable_camera (LinphoneCall *call, bool_t enable){
 753 #ifdef VIDEO_ENABLED
 754         if (call->videostream!=NULL && call->videostream->ticker!=NULL){
 755                 LinphoneCore *lc=call->core;
 756                 MSWebCam *nowebcam=get_nowebcam_device();
 757                 if (call->camera_active!=enable && lc->video_conf.device!=nowebcam){
 758                         video_stream_change_camera(call->videostream,
 759                                      enable ? lc->video_conf.device : nowebcam);
 760                 }
 761         }
 762         call->camera_active=enable;
 763 #endif
 764 }
 765
 766 /**
 767  * Take a photo of currently received video and write it into a jpeg file.
 768 **/
 769 int linphone_call_take_video_snapshot(LinphoneCall *call, const char *file){
 770 #ifdef VIDEO_ENABLED
 771         if (call->videostream!=NULL && call->videostream->jpegwriter!=NULL){
 772                 return ms_filter_call_method(call->videostream->jpegwriter,MS_JPEG_WRITER_TAKE_SNAPSHOT,(void*)file);
 773         }
 774         ms_warning("Cannot take snapshot: no currently running video stream on this call.");
 775         return -1;
 776 #endif
 777         return -1;
 778 }
 779
 780 /**
 781  * Returns TRUE if camera pictures are sent to the remote party.
 782 **/
 783 bool_t linphone_call_camera_enabled (const LinphoneCall *call){
 784         return call->camera_active;
 785 }
 786
 787 /**
 788  * Enable video stream.
 789 **/
 790 void linphone_call_params_enable_video(LinphoneCallParams *cp, bool_t enabled){
 791         cp->has_video=enabled;
 792 }
 793
 794 const PayloadType* linphone_call_params_get_used_audio_codec(const LinphoneCallParams *cp) {
 795         return cp->audio_codec;
 796 }
 797
 798 const PayloadType* linphone_call_params_get_used_video_codec(const LinphoneCallParams *cp) {
 799         return cp->video_codec;
 800 }
 801
 802 /**
 803  * Returns whether video is enabled.
 804 **/
 805 bool_t linphone_call_params_video_enabled(const LinphoneCallParams *cp){
 806         return cp->has_video;
 807 }
 808
 809 enum LinphoneMediaEncryption linphone_call_params_get_media_encryption(const LinphoneCallParams *cp) {
 810         return cp->media_encryption;
 811 }
 812
 813 void linphone_call_params_set_media_encryption(LinphoneCallParams *cp, enum LinphoneMediaEncryption e) {
 814         cp->media_encryption = e;
 815 }
 816
 817
 818 /**
 819  * Enable sending of real early media (during outgoing calls).
 820 **/
 821 void linphone_call_params_enable_early_media_sending(LinphoneCallParams *cp, bool_t enabled){
 822         cp->real_early_media=enabled;
 823 }
 824
 825 bool_t linphone_call_params_early_media_sending_enabled(const LinphoneCallParams *cp){
 826         return cp->real_early_media;
 827 }
 828
 829 /**
 830  * Returns true if the call is part of the locally managed conference.
 831 **/
 832 bool_t linphone_call_params_local_conference_mode(const LinphoneCallParams *cp){
 833         return cp->in_conference;
 834 }
 835
 836 /**
 837  * Refine bandwidth settings for this call by setting a bandwidth limit for audio streams.
 838  * As a consequence, codecs whose bitrates are not compatible with this limit won't be used.
 839 **/
 840 void linphone_call_params_set_audio_bandwidth_limit(LinphoneCallParams *cp, int bandwidth){
 841         cp->audio_bw=bandwidth;
 842 }
 843
 844 #ifdef VIDEO_ENABLED
 845 /**
 846  * Request remote side to send us a Video Fast Update.
 847 **/
 848 void linphone_call_send_vfu_request(LinphoneCall *call)
 849 {
 850         if (LinphoneCallStreamsRunning == linphone_call_get_state(call))
 851                 sal_call_send_vfu_request(call->op);
 852 }
 853 #endif
 854
 855 /**
 856  *
 857 **/
 858 LinphoneCallParams * linphone_call_params_copy(const LinphoneCallParams *cp){
 859         LinphoneCallParams *ncp=ms_new0(LinphoneCallParams,1);
 860         memcpy(ncp,cp,sizeof(LinphoneCallParams));
 861         return ncp;
 862 }
 863
 864 /**
 865  *
 866 **/
 867 void linphone_call_params_destroy(LinphoneCallParams *p){
 868         ms_free(p);
 869 }
 870
 871 /**
 872  * @}
 873 **/
 874
 875
 876 #ifdef TEST_EXT_RENDERER
 877 static void rendercb(void *data, const MSPicture *local, const MSPicture *remote){
 878         ms_message("rendercb, local buffer=%p, remote buffer=%p",
 879                    local ? local->planes[0] : NULL, remote? remote->planes[0] : NULL);
 880 }
 881 #endif
 882
 883 #ifdef VIDEO_ENABLED
 884 static void video_stream_event_cb(void *user_pointer, const MSFilter *f, const unsigned int event_id, const void *args){
 885     LinphoneCall* call = (LinphoneCall*) user_pointer;
 886         ms_warning("In linphonecall.c: video_stream_event_cb");
 887         switch (event_id) {
 888                 case MS_VIDEO_DECODER_DECODING_ERRORS:
 889                         ms_warning("Case is MS_VIDEO_DECODER_DECODING_ERRORS");
 890                         linphone_call_send_vfu_request(call);
 891                         break;
 892         case MS_VIDEO_DECODER_FIRST_IMAGE_DECODED:
 893             ms_message("First video frame decoded successfully");
 894             if (call->nextVideoFrameDecoded._func != NULL)
 895                 call->nextVideoFrameDecoded._func(call, call->nextVideoFrameDecoded._user_data);
 896             break;
 897                 default:
 898                         ms_warning("Unhandled event %i", event_id);
 899                         break;
 900         }
 901 }
 902 #endif
 903
 904 void linphone_call_set_next_video_frame_decoded_callback(LinphoneCall *call, LinphoneCallCbFunc cb, void* user_data) {
 905     call->nextVideoFrameDecoded._func = cb;
 906     call->nextVideoFrameDecoded._user_data = user_data;
 907 #ifdef VIDEO_ENABLED
 908     ms_filter_call_method_noarg(call->videostream->decoder, MS_VIDEO_DECODER_RESET_FIRST_IMAGE_NOTIFICATION);
 909 #endif
 910 }
 911
 912 void linphone_call_init_media_streams(LinphoneCall *call){
 913         LinphoneCore *lc=call->core;
 914         SalMediaDescription *md=call->localdesc;
 915         AudioStream *audiostream;
 916
 917         call->audiostream=audiostream=audio_stream_new(md->streams[0].port,linphone_core_ipv6_enabled(lc));
 918         if (linphone_core_echo_limiter_enabled(lc)){
 919                 const char *type=lp_config_get_string(lc->config,"sound","el_type","mic");
 920                 if (strcasecmp(type,"mic")==0)
 921                         audio_stream_enable_echo_limiter(audiostream,ELControlMic);
 922                 else if (strcasecmp(type,"full")==0)
 923                         audio_stream_enable_echo_limiter(audiostream,ELControlFull);
 924         }
 925         audio_stream_enable_gain_control(audiostream,TRUE);
 926         if (linphone_core_echo_cancellation_enabled(lc)){
 927                 int len,delay,framesize;
 928                 const char *statestr=lp_config_get_string(lc->config,"sound","ec_state",NULL);
 929                 len=lp_config_get_int(lc->config,"sound","ec_tail_len",0);
 930                 delay=lp_config_get_int(lc->config,"sound","ec_delay",0);
 931                 framesize=lp_config_get_int(lc->config,"sound","ec_framesize",0);
 932                 audio_stream_set_echo_canceller_params(audiostream,len,delay,framesize);
 933                 if (statestr && audiostream->ec){
 934                         ms_filter_call_method(audiostream->ec,MS_ECHO_CANCELLER_SET_STATE_STRING,(void*)statestr);
 935                 }
 936         }
 937         audio_stream_enable_automatic_gain_control(audiostream,linphone_core_agc_enabled(lc));
 938         {
 939                 int enabled=lp_config_get_int(lc->config,"sound","noisegate",0);
 940                 audio_stream_enable_noise_gate(audiostream,enabled);
 941         }
 942
 943         if (lc->rtptf){
 944                 RtpTransport *artp=lc->rtptf->audio_rtp_func(lc->rtptf->audio_rtp_func_data, call->audio_port);
 945                 RtpTransport *artcp=lc->rtptf->audio_rtcp_func(lc->rtptf->audio_rtcp_func_data, call->audio_port+1);
 946                 rtp_session_set_transports(audiostream->session,artp,artcp);
 947         }
 948
 949         call->audiostream_app_evq = ortp_ev_queue_new();
 950         rtp_session_register_event_queue(audiostream->session,call->audiostream_app_evq);
 951
 952 #ifdef VIDEO_ENABLED
 953
 954         if ((lc->video_conf.display || lc->video_conf.capture) && md->streams[1].port>0){
 955                 int video_recv_buf_size=lp_config_get_int(lc->config,"video","recv_buf_size",0);
 956                 call->videostream=video_stream_new(md->streams[1].port,linphone_core_ipv6_enabled(lc));
 957                 video_stream_enable_display_filter_auto_rotate(call->videostream, lp_config_get_int(lc->config,"video","display_filter_auto_rotate",0));
 958                 if (video_recv_buf_size>0) rtp_session_set_recv_buf_size(call->videostream->session,video_recv_buf_size);
 959
 960                 if( lc->video_conf.displaytype != NULL)
 961                         video_stream_set_display_filter_name(call->videostream,lc->video_conf.displaytype);
 962                 video_stream_set_event_callback(call->videostream,video_stream_event_cb, call);
 963                 if (lc->rtptf){
 964                         RtpTransport *vrtp=lc->rtptf->video_rtp_func(lc->rtptf->video_rtp_func_data, call->video_port);
 965                         RtpTransport *vrtcp=lc->rtptf->video_rtcp_func(lc->rtptf->video_rtcp_func_data, call->video_port+1);
 966                         rtp_session_set_transports(call->videostream->session,vrtp,vrtcp);
 967                 }
 968                 call->videostream_app_evq = ortp_ev_queue_new();
 969                 rtp_session_register_event_queue(call->videostream->session,call->videostream_app_evq);
 970 #ifdef TEST_EXT_RENDERER
 971                 video_stream_set_render_callback(call->videostream,rendercb,NULL);
 972 #endif
 973         }
 974 #else
 975         call->videostream=NULL;
 976 #endif
 977 }
 978
 979
 980 static int dtmf_tab[16]={'0','1','2','3','4','5','6','7','8','9','*','#','A','B','C','D'};
 981
 982 static void linphone_core_dtmf_received(RtpSession* s, int dtmf, void* user_data){
 983         LinphoneCore* lc = (LinphoneCore*)user_data;
 984         if (dtmf<0 || dtmf>15){
 985                 ms_warning("Bad dtmf value %i",dtmf);
 986                 return;
 987         }
 988         if (lc->vtable.dtmf_received != NULL)
 989                 lc->vtable.dtmf_received(lc, linphone_core_get_current_call(lc), dtmf_tab[dtmf]);
 990 }
 991
 992 static void parametrize_equalizer(LinphoneCore *lc, AudioStream *st){
 993         if (st->equalizer){
 994                 MSFilter *f=st->equalizer;
 995                 int enabled=lp_config_get_int(lc->config,"sound","eq_active",0);
 996                 const char *gains=lp_config_get_string(lc->config,"sound","eq_gains",NULL);
 997                 ms_filter_call_method(f,MS_EQUALIZER_SET_ACTIVE,&enabled);
 998                 if (enabled){
 999                         if (gains){
1000                                 do{
1001                                         int bytes;
1002                                         MSEqualizerGain g;
1003                                         if (sscanf(gains,"%f:%f:%f %n",&g.frequency,&g.gain,&g.width,&bytes)==3){
1004                                                 ms_message("Read equalizer gains: %f(~%f) --> %f",g.frequency,g.width,g.gain);
1005                                                 ms_filter_call_method(f,MS_EQUALIZER_SET_GAIN,&g);
1006                                                 gains+=bytes;
1007                                         }else break;
1008                                 }while(1);
1009                         }
1010                 }
1011         }
1012 }
1013
1014 void _post_configure_audio_stream(AudioStream *st, LinphoneCore *lc, bool_t muted){
1015         float mic_gain=lp_config_get_float(lc->config,"sound","mic_gain",1);
1016         float thres = 0;
1017         float recv_gain;
1018         float ng_thres=lp_config_get_float(lc->config,"sound","ng_thres",0.05);
1019         float ng_floorgain=lp_config_get_float(lc->config,"sound","ng_floorgain",0);
1020         int dc_removal=lp_config_get_int(lc->config,"sound","dc_removal",0);
1021
1022         if (!muted)
1023                 audio_stream_set_mic_gain(st,mic_gain);
1024         else
1025                 audio_stream_set_mic_gain(st,0);
1026
1027         recv_gain = lc->sound_conf.soft_play_lev;
1028         if (recv_gain != 0) {
1029                 linphone_core_set_playback_gain_db (lc,recv_gain);
1030         }
1031
1032         if (st->volsend){
1033                 ms_filter_call_method(st->volsend,MS_VOLUME_REMOVE_DC,&dc_removal);
1034                 float speed=lp_config_get_float(lc->config,"sound","el_speed",-1);
1035                 thres=lp_config_get_float(lc->config,"sound","el_thres",-1);
1036                 float force=lp_config_get_float(lc->config,"sound","el_force",-1);
1037                 int sustain=lp_config_get_int(lc->config,"sound","el_sustain",-1);
1038                 float transmit_thres=lp_config_get_float(lc->config,"sound","el_transmit_thres",-1);
1039                 MSFilter *f=NULL;
1040                 f=st->volsend;
1041                 if (speed==-1) speed=0.03;
1042                 if (force==-1) force=25;
1043                 ms_filter_call_method(f,MS_VOLUME_SET_EA_SPEED,&speed);
1044                 ms_filter_call_method(f,MS_VOLUME_SET_EA_FORCE,&force);
1045                 if (thres!=-1)
1046                         ms_filter_call_method(f,MS_VOLUME_SET_EA_THRESHOLD,&thres);
1047                 if (sustain!=-1)
1048                         ms_filter_call_method(f,MS_VOLUME_SET_EA_SUSTAIN,&sustain);
1049                 if (transmit_thres!=-1)
1050                                 ms_filter_call_method(f,MS_VOLUME_SET_EA_TRANSMIT_THRESHOLD,&transmit_thres);
1051
1052                 ms_filter_call_method(st->volsend,MS_VOLUME_SET_NOISE_GATE_THRESHOLD,&ng_thres);
1053                 ms_filter_call_method(st->volsend,MS_VOLUME_SET_NOISE_GATE_FLOORGAIN,&ng_floorgain);
1054         }
1055         if (st->volrecv){
1056                 /* parameters for a limited noise-gate effect, using echo limiter threshold */
1057                 float floorgain = 1/mic_gain;
1058                 int spk_agc=lp_config_get_int(lc->config,"sound","speaker_agc_enabled",0);
1059                 ms_filter_call_method(st->volrecv, MS_VOLUME_ENABLE_AGC, &spk_agc);
1060                 ms_filter_call_method(st->volrecv,MS_VOLUME_SET_NOISE_GATE_THRESHOLD,&ng_thres);
1061                 ms_filter_call_method(st->volrecv,MS_VOLUME_SET_NOISE_GATE_FLOORGAIN,&floorgain);
1062         }
1063         parametrize_equalizer(lc,st);
1064 }
1065
1066 static void post_configure_audio_streams(LinphoneCall*call){
1067         AudioStream *st=call->audiostream;
1068         LinphoneCore *lc=call->core;
1069         _post_configure_audio_stream(st,lc,call->audio_muted);
1070         if (lc->vtable.dtmf_received!=NULL){
1071                 /* replace by our default action*/
1072                 audio_stream_play_received_dtmfs(call->audiostream,FALSE);
1073                 rtp_session_signal_connect(call->audiostream->session,"telephone-event",(RtpCallback)linphone_core_dtmf_received,(unsigned long)lc);
1074         }
1075 }
1076
1077 static RtpProfile *make_profile(LinphoneCall *call, const SalMediaDescription *md, const SalStreamDescription *desc, int *used_pt){
1078         int bw;
1079         const MSList *elem;
1080         RtpProfile *prof=rtp_profile_new("Call profile");
1081         bool_t first=TRUE;
1082         int remote_bw=0;
1083         LinphoneCore *lc=call->core;
1084         int up_ptime=0;
1085         *used_pt=-1;
1086
1087         for(elem=desc->payloads;elem!=NULL;elem=elem->next){
1088                 PayloadType *pt=(PayloadType*)elem->data;
1089                 int number;
1090
1091                 if ((pt->flags & PAYLOAD_TYPE_FLAG_CAN_SEND) && first) {
1092                         if (desc->type==SalAudio){
1093                                 linphone_core_update_allocated_audio_bandwidth_in_call(call,pt);
1094                                 up_ptime=linphone_core_get_upload_ptime(lc);
1095                         }
1096                         *used_pt=payload_type_get_number(pt);
1097                         first=FALSE;
1098                 }
1099                 if (desc->bandwidth>0) remote_bw=desc->bandwidth;
1100                 else if (md->bandwidth>0) {
1101                         /*case where b=AS is given globally, not per stream*/
1102                         remote_bw=md->bandwidth;
1103                         if (desc->type==SalVideo){
1104                                 remote_bw=get_video_bandwidth(remote_bw,call->audio_bw);
1105                         }
1106                 }
1107
1108                 if (desc->type==SalAudio){
1109                                 bw=get_min_bandwidth(call->audio_bw,remote_bw);
1110                 }else bw=get_min_bandwidth(get_video_bandwidth(linphone_core_get_upload_bandwidth (lc),call->audio_bw),remote_bw);
1111                 if (bw>0) pt->normal_bitrate=bw*1000;
1112                 else if (desc->type==SalAudio){
1113                         pt->normal_bitrate=-1;
1114                 }
1115                 if (desc->ptime>0){
1116                         up_ptime=desc->ptime;
1117                 }
1118                 if (up_ptime>0){
1119                         char tmp[40];
1120                         snprintf(tmp,sizeof(tmp),"ptime=%i",up_ptime);
1121                         payload_type_append_send_fmtp(pt,tmp);
1122                 }
1123                 number=payload_type_get_number(pt);
1124                 if (rtp_profile_get_payload(prof,number)!=NULL){
1125                         ms_warning("A payload type with number %i already exists in profile !",number);
1126                 }else
1127                         rtp_profile_set_payload(prof,number,pt);
1128         }
1129         return prof;
1130 }
1131
1132
1133 static void setup_ring_player(LinphoneCore *lc, LinphoneCall *call){
1134         int pause_time=3000;
1135         audio_stream_play(call->audiostream,lc->sound_conf.ringback_tone);
1136         ms_filter_call_method(call->audiostream->soundread,MS_FILE_PLAYER_LOOP,&pause_time);
1137 }
1138
1139 #define LINPHONE_RTCP_SDES_TOOL "Linphone-" LINPHONE_VERSION
1140
1141 static bool_t linphone_call_sound_resources_available(LinphoneCall *call){
1142         LinphoneCore *lc=call->core;
1143         LinphoneCall *current=linphone_core_get_current_call(lc);
1144         return !linphone_core_is_in_conference(lc) &&
1145                 (current==NULL || current==call);
1146 }
1147 static int find_crypto_index_from_tag(const SalSrtpCryptoAlgo crypto[],unsigned char tag) {
1148     int i;
1149     for(i=0; i<SAL_CRYPTO_ALGO_MAX; i++) {
1150         if (crypto[i].tag == tag) {
1151             return i;
1152         }
1153     }
1154     return -1;
1155 }
1156 static void linphone_call_start_audio_stream(LinphoneCall *call, const char *cname, bool_t muted, bool_t send_ringbacktone, bool_t use_arc){
1157         LinphoneCore *lc=call->core;
1158         int jitt_comp=lc->rtp_conf.audio_jitt_comp;
1159         int used_pt=-1;
1160         /* look for savp stream first */
1161         const SalStreamDescription *stream=sal_media_description_find_stream(call->resultdesc,
1162                                                 SalProtoRtpSavp,SalAudio);
1163         /* no savp audio stream, use avp */
1164         if (!stream)
1165                 stream=sal_media_description_find_stream(call->resultdesc,
1166                                                 SalProtoRtpAvp,SalAudio);
1167
1168         if (stream && stream->dir!=SalStreamInactive && stream->port!=0){
1169                 MSSndCard *playcard=lc->sound_conf.lsd_card ?
1170                         lc->sound_conf.lsd_card : lc->sound_conf.play_sndcard;
1171                 MSSndCard *captcard=lc->sound_conf.capt_sndcard;
1172                 const char *playfile=lc->play_file;
1173                 const char *recfile=lc->rec_file;
1174                 call->audio_profile=make_profile(call,call->resultdesc,stream,&used_pt);
1175                 bool_t use_ec;
1176
1177                 if (used_pt!=-1){
1178                         call->current_params.audio_codec = rtp_profile_get_payload(call->audio_profile, used_pt);
1179                         if (playcard==NULL) {
1180                                 ms_warning("No card defined for playback !");
1181                         }
1182                         if (captcard==NULL) {
1183                                 ms_warning("No card defined for capture !");
1184                         }
1185                         /*Replace soundcard filters by inactive file players or recorders
1186                          when placed in recvonly or sendonly mode*/
1187                         if (stream->port==0 || stream->dir==SalStreamRecvOnly){
1188                                 captcard=NULL;
1189                                 playfile=NULL;
1190                         }else if (stream->dir==SalStreamSendOnly){
1191                                 playcard=NULL;
1192                                 captcard=NULL;
1193                                 recfile=NULL;
1194                                 /*And we will eventually play "playfile" if set by the user*/
1195                                 /*playfile=NULL;*/
1196                         }
1197                         if (send_ringbacktone){
1198                                 captcard=NULL;
1199                                 playfile=NULL;/* it is setup later*/
1200                         }
1201                         /*if playfile are supplied don't use soundcards*/
1202                         if (lc->use_files) {
1203                                 captcard=NULL;
1204                                 playcard=NULL;
1205                         }
1206                         if (call->params.in_conference){
1207                                 /* first create the graph without soundcard resources*/
1208                                 captcard=playcard=NULL;
1209                         }
1210                         if (!linphone_call_sound_resources_available(call)){
1211                                 ms_message("Sound resources are used by another call, not using soundcard.");
1212                                 captcard=playcard=NULL;
1213                         }
1214                         use_ec=captcard==NULL ? FALSE : linphone_core_echo_cancellation_enabled(lc);
1215                         if (playcard &&  stream->max_rate>0) ms_snd_card_set_preferred_sample_rate(playcard, stream->max_rate);
1216                         if (captcard &&  stream->max_rate>0) ms_snd_card_set_preferred_sample_rate(captcard, stream->max_rate);
1217                         audio_stream_enable_adaptive_bitrate_control(call->audiostream,use_arc);
1218                         audio_stream_start_full(
1219                                 call->audiostream,
1220                                 call->audio_profile,
1221                                 stream->addr[0]!='\0' ? stream->addr : call->resultdesc->addr,
1222                                 stream->port,
1223                                 linphone_core_rtcp_enabled(lc) ? (stream->port+1) : 0,
1224                                 used_pt,
1225                                 jitt_comp,
1226                                 playfile,
1227                                 recfile,
1228                                 playcard,
1229                                 captcard,
1230                                 use_ec
1231                                 );
1232                         post_configure_audio_streams(call);
1233                         if (muted && !send_ringbacktone){
1234                                 audio_stream_set_mic_gain(call->audiostream,0);
1235                         }
1236                         if (stream->dir==SalStreamSendOnly && playfile!=NULL){
1237                                 int pause_time=500;
1238                                 ms_filter_call_method(call->audiostream->soundread,MS_FILE_PLAYER_LOOP,&pause_time);
1239                         }
1240                         if (send_ringbacktone){
1241                                 setup_ring_player(lc,call);
1242                         }
1243                         audio_stream_set_rtcp_information(call->audiostream, cname, LINPHONE_RTCP_SDES_TOOL);
1244
1245             /* valid local tags are > 0 */
1246                         if (stream->proto == SalProtoRtpSavp) {
1247                 const SalStreamDescription *local_st_desc=sal_media_description_find_stream(call->localdesc,
1248                                                                                             SalProtoRtpSavp,SalAudio);
1249                 int crypto_idx = find_crypto_index_from_tag(local_st_desc->crypto, stream->crypto_local_tag);
1250
1251                 if (crypto_idx >= 0) {
1252                     audio_stream_enable_strp(
1253                                              call->audiostream,
1254                                              stream->crypto[0].algo,
1255                                              local_st_desc->crypto[crypto_idx].master_key,
1256                                              stream->crypto[0].master_key);
1257                     call->audiostream_encrypted=TRUE;
1258                 } else {
1259                     ms_warning("Failed to find local crypto algo with tag: %d", stream->crypto_local_tag);
1260                     call->audiostream_encrypted=FALSE;
1261                 }
1262                         }else call->audiostream_encrypted=FALSE;
1263                         if (call->params.in_conference){
1264                                 /*transform the graph to connect it to the conference filter */
1265                                 bool_t mute=stream->dir==SalStreamRecvOnly;
1266                                 linphone_call_add_to_conf(call, mute);
1267                         }
1268                         call->current_params.in_conference=call->params.in_conference;
1269                 }else ms_warning("No audio stream accepted ?");
1270         }
1271 }
1272
1273 static void linphone_call_start_video_stream(LinphoneCall *call, const char *cname,bool_t all_inputs_muted){
1274 #ifdef VIDEO_ENABLED
1275         LinphoneCore *lc=call->core;
1276         int used_pt=-1;
1277         /* look for savp stream first */
1278         const SalStreamDescription *vstream=sal_media_description_find_stream(call->resultdesc,
1279                                                 SalProtoRtpSavp,SalVideo);
1280         /* no savp audio stream, use avp */
1281         if (!vstream)
1282                 vstream=sal_media_description_find_stream(call->resultdesc,
1283                                                 SalProtoRtpAvp,SalVideo);
1284
1285         /* shutdown preview */
1286         if (lc->previewstream!=NULL) {
1287                 video_preview_stop(lc->previewstream);
1288                 lc->previewstream=NULL;
1289         }
1290
1291         if (vstream!=NULL && vstream->dir!=SalStreamInactive && vstream->port!=0) {
1292                 const char *addr=vstream->addr[0]!='\0' ? vstream->addr : call->resultdesc->addr;
1293                 call->video_profile=make_profile(call,call->resultdesc,vstream,&used_pt);
1294                 if (used_pt!=-1){
1295                         call->current_params.video_codec = rtp_profile_get_payload(call->video_profile, used_pt);
1296                         VideoStreamDir dir=VideoStreamSendRecv;
1297                         MSWebCam *cam=lc->video_conf.device;
1298                         bool_t is_inactive=FALSE;
1299
1300                         call->current_params.has_video=TRUE;
1301
1302                         video_stream_enable_adaptive_bitrate_control(call->videostream,
1303                                                                   linphone_core_adaptive_rate_control_enabled(lc));
1304                         video_stream_set_sent_video_size(call->videostream,linphone_core_get_preferred_video_size(lc));
1305                         video_stream_enable_self_view(call->videostream,lc->video_conf.selfview);
1306                         if (lc->video_window_id!=0)
1307                                 video_stream_set_native_window_id(call->videostream,lc->video_window_id);
1308                         if (lc->preview_window_id!=0)
1309                                 video_stream_set_native_preview_window_id (call->videostream,lc->preview_window_id);
1310                         video_stream_use_preview_video_window (call->videostream,lc->use_preview_window);
1311
1312                         if (vstream->dir==SalStreamSendOnly && lc->video_conf.capture ){
1313                                 cam=get_nowebcam_device();
1314                                 dir=VideoStreamSendOnly;
1315                         }else if (vstream->dir==SalStreamRecvOnly && lc->video_conf.display ){
1316                                 dir=VideoStreamRecvOnly;
1317                         }else if (vstream->dir==SalStreamSendRecv){
1318                                 if (lc->video_conf.display && lc->video_conf.capture)
1319                                         dir=VideoStreamSendRecv;
1320                                 else if (lc->video_conf.display)
1321                                         dir=VideoStreamRecvOnly;
1322                                 else
1323                                         dir=VideoStreamSendOnly;
1324                         }else{
1325                                 ms_warning("video stream is inactive.");
1326                                 /*either inactive or incompatible with local capabilities*/
1327                                 is_inactive=TRUE;
1328                         }
1329                         if (call->camera_active==FALSE || all_inputs_muted){
1330                                 cam=get_nowebcam_device();
1331                         }
1332                         if (!is_inactive){
1333                 call->log->video_enabled = TRUE;
1334                                 video_stream_set_direction (call->videostream, dir);
1335                                 ms_message("%s lc rotation:%d\n", __FUNCTION__, lc->device_rotation);
1336                                 video_stream_set_device_rotation(call->videostream, lc->device_rotation);
1337                                 video_stream_start(call->videostream,
1338                                         call->video_profile, addr, vstream->port,
1339                                         linphone_core_rtcp_enabled(lc) ? (vstream->port+1) : 0,
1340                                         used_pt, lc->rtp_conf.audio_jitt_comp, cam);
1341                                 video_stream_set_rtcp_information(call->videostream, cname,LINPHONE_RTCP_SDES_TOOL);
1342                         }
1343
1344                         if (vstream->proto == SalProtoRtpSavp) {
1345                                 const SalStreamDescription *local_st_desc=sal_media_description_find_stream(call->localdesc,
1346                                                 SalProtoRtpSavp,SalVideo);
1347
1348                                 video_stream_enable_strp(
1349                                         call->videostream,
1350                                         vstream->crypto[0].algo,
1351                                         local_st_desc->crypto[0].master_key,
1352                                         vstream->crypto[0].master_key
1353                                         );
1354                                 call->videostream_encrypted=TRUE;
1355                         }else{
1356                                 call->videostream_encrypted=FALSE;
1357                         }
1358                 }else ms_warning("No video stream accepted.");
1359         }else{
1360                 ms_warning("No valid video stream defined.");
1361         }
1362 #endif
1363 }
1364
1365 void linphone_call_start_media_streams(LinphoneCall *call, bool_t all_inputs_muted, bool_t send_ringbacktone){
1366         LinphoneCore *lc=call->core;
1367
1368         call->current_params.audio_codec = NULL;
1369         call->current_params.video_codec = NULL;
1370
1371         LinphoneAddress *me=linphone_core_get_primary_contact_parsed(lc);
1372         char *cname;
1373         bool_t use_arc=linphone_core_adaptive_rate_control_enabled(lc);
1374 #ifdef VIDEO_ENABLED
1375         const SalStreamDescription *vstream=sal_media_description_find_stream(call->resultdesc,
1376                                                         SalProtoRtpAvp,SalVideo);
1377 #endif
1378
1379         if(call->audiostream == NULL)
1380         {
1381                 ms_fatal("start_media_stream() called without prior init !");
1382                 return;
1383         }
1384         cname=linphone_address_as_string_uri_only(me);
1385
1386 #if defined(VIDEO_ENABLED)
1387         if (vstream!=NULL && vstream->dir!=SalStreamInactive && vstream->payloads!=NULL){
1388                 /*when video is used, do not make adaptive rate control on audio, it is stupid.*/
1389                 use_arc=FALSE;
1390         }
1391 #endif
1392         linphone_call_start_audio_stream(call,cname,all_inputs_muted,send_ringbacktone,use_arc);
1393         call->current_params.has_video=FALSE;
1394         if (call->videostream!=NULL) {
1395                 linphone_call_start_video_stream(call,cname,all_inputs_muted);
1396         }
1397
1398         call->all_muted=all_inputs_muted;
1399         call->playing_ringbacktone=send_ringbacktone;
1400         call->up_bw=linphone_core_get_upload_bandwidth(lc);
1401
1402         if (call->params.media_encryption==LinphoneMediaEncryptionZRTP) {
1403                 OrtpZrtpParams params;
1404                 /*will be set later when zrtp is activated*/
1405                 call->current_params.media_encryption=LinphoneMediaEncryptionNone;
1406
1407                 params.zid_file=lc->zrtp_secrets_cache;
1408                 audio_stream_enable_zrtp(call->audiostream,&params);
1409         }else if (call->params.media_encryption==LinphoneMediaEncryptionSRTP){
1410                 call->current_params.media_encryption=linphone_call_are_all_streams_encrypted(call) ?
1411                         LinphoneMediaEncryptionSRTP : LinphoneMediaEncryptionNone;
1412         }
1413
1414         /*also reflect the change if the "wished" params, in order to avoid to propose SAVP or video again
1415          * further in the call, for example during pause,resume, conferencing reINVITEs*/
1416         linphone_call_fix_call_parameters(call);
1417
1418         goto end;
1419         end:
1420                 ms_free(cname);
1421                 linphone_address_destroy(me);
1422 }
1423
1424 static void linphone_call_log_fill_stats(LinphoneCallLog *log, AudioStream *st){
1425         audio_stream_get_local_rtp_stats (st,&log->local_stats);
1426         log->quality=audio_stream_get_average_quality_rating(st);
1427 }
1428
1429 void linphone_call_stop_media_streams(LinphoneCall *call){
1430         if (call->audiostream!=NULL) {
1431                 rtp_session_unregister_event_queue(call->audiostream->session,call->audiostream_app_evq);
1432                 ortp_ev_queue_flush(call->audiostream_app_evq);
1433                 ortp_ev_queue_destroy(call->audiostream_app_evq);
1434
1435                 if (call->audiostream->ec){
1436                         const char *state_str=NULL;
1437                         ms_filter_call_method(call->audiostream->ec,MS_ECHO_CANCELLER_GET_STATE_STRING,&state_str);
1438                         if (state_str){
1439                                 ms_message("Writing echo canceler state, %i bytes",(int)strlen(state_str));
1440                                 lp_config_set_string(call->core->config,"sound","ec_state",state_str);
1441                         }
1442                 }
1443                 linphone_call_log_fill_stats (call->log,call->audiostream);
1444                 if (call->endpoint){
1445                         linphone_call_remove_from_conf(call);
1446                 }
1447                 audio_stream_stop(call->audiostream);
1448                 call->audiostream=NULL;
1449         }
1450
1451
1452 #ifdef VIDEO_ENABLED
1453         if (call->videostream!=NULL){
1454                 rtp_session_unregister_event_queue(call->videostream->session,call->videostream_app_evq);
1455                 ortp_ev_queue_flush(call->videostream_app_evq);
1456                 ortp_ev_queue_destroy(call->videostream_app_evq);
1457                 video_stream_stop(call->videostream);
1458                 call->videostream=NULL;
1459         }
1460 #endif
1461         ms_event_queue_skip(call->core->msevq);
1462
1463         if (call->audio_profile){
1464                 rtp_profile_clear_all(call->audio_profile);
1465                 rtp_profile_destroy(call->audio_profile);
1466                 call->audio_profile=NULL;
1467         }
1468         if (call->video_profile){
1469                 rtp_profile_clear_all(call->video_profile);
1470                 rtp_profile_destroy(call->video_profile);
1471                 call->video_profile=NULL;
1472         }
1473 }
1474
1475
1476
1477 void linphone_call_enable_echo_cancellation(LinphoneCall *call, bool_t enable) {
1478         if (call!=NULL && call->audiostream!=NULL && call->audiostream->ec){
1479                 bool_t bypass_mode = !enable;
1480                 ms_filter_call_method(call->audiostream->ec,MS_ECHO_CANCELLER_SET_BYPASS_MODE,&bypass_mode);
1481         }
1482 }
1483 bool_t linphone_call_echo_cancellation_enabled(LinphoneCall *call) {
1484         if (call!=NULL && call->audiostream!=NULL && call->audiostream->ec){
1485                 bool_t val;
1486                 ms_filter_call_method(call->audiostream->ec,MS_ECHO_CANCELLER_GET_BYPASS_MODE,&val);
1487                 return !val;
1488         } else {
1489                 return linphone_core_echo_cancellation_enabled(call->core);
1490         }
1491 }
1492
1493 void linphone_call_enable_echo_limiter(LinphoneCall *call, bool_t val){
1494         if (call!=NULL && call->audiostream!=NULL ) {
1495                 if (val) {
1496                 const char *type=lp_config_get_string(call->core->config,"sound","el_type","mic");
1497                 if (strcasecmp(type,"mic")==0)
1498                         audio_stream_enable_echo_limiter(call->audiostream,ELControlMic);
1499                 else if (strcasecmp(type,"full")==0)
1500                         audio_stream_enable_echo_limiter(call->audiostream,ELControlFull);
1501                 } else {
1502                         audio_stream_enable_echo_limiter(call->audiostream,ELInactive);
1503                 }
1504         }
1505 }
1506
1507 bool_t linphone_call_echo_limiter_enabled(const LinphoneCall *call){
1508         if (call!=NULL && call->audiostream!=NULL ){
1509                 return call->audiostream->el_type !=ELInactive ;
1510         } else {
1511                 return linphone_core_echo_limiter_enabled(call->core);
1512         }
1513 }
1514
1515 /**
1516  * @addtogroup call_misc
1517  * @{
1518 **/
1519
1520 /**
1521  * Returns the measured sound volume played locally (received from remote)
1522  * It is expressed in dbm0.
1523 **/
1524 float linphone_call_get_play_volume(LinphoneCall *call){
1525         AudioStream *st=call->audiostream;
1526         if (st && st->volrecv){
1527                 float vol=0;
1528                 ms_filter_call_method(st->volrecv,MS_VOLUME_GET,&vol);
1529                 return vol;
1530
1531         }
1532         return LINPHONE_VOLUME_DB_LOWEST;
1533 }
1534
1535 /**
1536  * Returns the measured sound volume recorded locally (sent to remote)
1537  * It is expressed in dbm0.
1538 **/
1539 float linphone_call_get_record_volume(LinphoneCall *call){
1540         AudioStream *st=call->audiostream;
1541         if (st && st->volsend && !call->audio_muted && call->state==LinphoneCallStreamsRunning){
1542                 float vol=0;
1543                 ms_filter_call_method(st->volsend,MS_VOLUME_GET,&vol);
1544                 return vol;
1545
1546         }
1547         return LINPHONE_VOLUME_DB_LOWEST;
1548 }
1549
1550 /**
1551  * Obtain real-time quality rating of the call
1552  *
1553  * Based on local RTP statistics and RTCP feedback, a quality rating is computed and updated
1554  * during all the duration of the call. This function returns its value at the time of the function call.
1555  * It is expected that the rating is updated at least every 5 seconds or so.
1556  * The rating is a floating point number comprised between 0 and 5.
1557  *
1558  * 4-5 = good quality <br>
1559  * 3-4 = average quality <br>
1560  * 2-3 = poor quality <br>
1561  * 1-2 = very poor quality <br>
1562  * 0-1 = can't be worse, mostly unusable <br>
1563  *
1564  * @returns The function returns -1 if no quality measurement is available, for example if no
1565  * active audio stream exist. Otherwise it returns the quality rating.
1566 **/
1567 float linphone_call_get_current_quality(LinphoneCall *call){
1568         if (call->audiostream){
1569                 return audio_stream_get_quality_rating(call->audiostream);
1570         }
1571         return -1;
1572 }
1573
1574 /**
1575  * Returns call quality averaged over all the duration of the call.
1576  *
1577  * See linphone_call_get_current_quality() for more details about quality measurement.
1578 **/
1579 float linphone_call_get_average_quality(LinphoneCall *call){
1580         if (call->audiostream){
1581                 return audio_stream_get_average_quality_rating(call->audiostream);
1582         }
1583         return -1;
1584 }
1585
1586 /**
1587  * @}
1588 **/
1589
1590 static void display_bandwidth(RtpSession *as, RtpSession *vs){
1591         ms_message("bandwidth usage: audio=[d=%.1f,u=%.1f] video=[d=%.1f,u=%.1f] kbit/sec",
1592         (as!=NULL) ? (rtp_session_compute_recv_bandwidth(as)*1e-3) : 0,
1593         (as!=NULL) ? (rtp_session_compute_send_bandwidth(as)*1e-3) : 0,
1594         (vs!=NULL) ? (rtp_session_compute_recv_bandwidth(vs)*1e-3) : 0,
1595         (vs!=NULL) ? (rtp_session_compute_send_bandwidth(vs)*1e-3) : 0);
1596 }
1597
1598 static void linphone_core_disconnected(LinphoneCore *lc, LinphoneCall *call){
1599         char temp[256];
1600         char *from=NULL;
1601         if(call)
1602                 from = linphone_call_get_remote_address_as_string(call);
1603         if (from)
1604         {
1605                 snprintf(temp,sizeof(temp),"Remote end %s seems to have disconnected, the call is going to be closed.",from);
1606                 free(from);
1607         }
1608         else
1609         {
1610                 snprintf(temp,sizeof(temp),"Remote end seems to have disconnected, the call is going to be closed.");
1611         }
1612         if (lc->vtable.display_warning!=NULL)
1613                 lc->vtable.display_warning(lc,temp);
1614         linphone_core_terminate_call(lc,call);
1615 }
1616
1617 void linphone_call_background_tasks(LinphoneCall *call, bool_t one_second_elapsed){
1618         LinphoneCore* lc = call->core;
1619         int disconnect_timeout = linphone_core_get_nortp_timeout(call->core);
1620         bool_t disconnected=FALSE;
1621
1622         if (call->state==LinphoneCallStreamsRunning && one_second_elapsed){
1623                 RtpSession *as=NULL,*vs=NULL;
1624                 float audio_load=0, video_load=0;
1625                 if (call->audiostream!=NULL){
1626                         as=call->audiostream->session;
1627                         if (call->audiostream->ticker)
1628                                 audio_load=ms_ticker_get_average_load(call->audiostream->ticker);
1629                 }
1630                 if (call->videostream!=NULL){
1631                         if (call->videostream->ticker)
1632                                 video_load=ms_ticker_get_average_load(call->videostream->ticker);
1633                         vs=call->videostream->session;
1634                 }
1635                 display_bandwidth(as,vs);
1636                 ms_message("Thread processing load: audio=%f\tvideo=%f",audio_load,video_load);
1637         }
1638 #ifdef VIDEO_ENABLED
1639         if (call->videostream!=NULL) {
1640                 // Beware that the application queue should not depend on treatments fron the
1641                 // mediastreamer queue.
1642                 video_stream_iterate(call->videostream);
1643
1644                 if (call->videostream_app_evq){
1645                         OrtpEvent *ev;
1646                         while (NULL != (ev=ortp_ev_queue_get(call->videostream_app_evq))){
1647                                 OrtpEventType evt=ortp_event_get_type(ev);
1648                                 OrtpEventData *evd=ortp_event_get_data(ev);
1649                                 if (evt == ORTP_EVENT_ZRTP_ENCRYPTION_CHANGED){
1650                                         linphone_call_videostream_encryption_changed(call, evd->info.zrtp_stream_encrypted);
1651                                 } else if (evt == ORTP_EVENT_RTCP_PACKET_RECEIVED) {
1652                                         call->stats[LINPHONE_CALL_STATS_VIDEO].round_trip_delay = rtp_session_get_round_trip_propagation(call->videostream->session);
1653                                         if(call->stats[LINPHONE_CALL_STATS_VIDEO].received_rtcp != NULL)
1654                                                 freemsg(call->stats[LINPHONE_CALL_STATS_VIDEO].received_rtcp);
1655                                         call->stats[LINPHONE_CALL_STATS_VIDEO].received_rtcp = evd->packet;
1656                                         evd->packet = NULL;
1657                                         if (lc->vtable.call_stats_updated)
1658                                                 lc->vtable.call_stats_updated(lc, call, &call->stats[LINPHONE_CALL_STATS_VIDEO]);
1659                                 } else if (evt == ORTP_EVENT_RTCP_PACKET_EMITTED) {
1660                                         memcpy(&call->stats[LINPHONE_CALL_STATS_VIDEO].jitter_stats, rtp_session_get_jitter_stats(call->videostream->session), sizeof(jitter_stats_t));
1661                                         if(call->stats[LINPHONE_CALL_STATS_VIDEO].sent_rtcp != NULL)
1662                                                 freemsg(call->stats[LINPHONE_CALL_STATS_VIDEO].sent_rtcp);
1663                                         call->stats[LINPHONE_CALL_STATS_VIDEO].sent_rtcp = evd->packet;
1664                                         evd->packet = NULL;
1665                                         if (lc->vtable.call_stats_updated)
1666                                                 lc->vtable.call_stats_updated(lc, call, &call->stats[LINPHONE_CALL_STATS_VIDEO]);
1667                                 }
1668                                 ortp_event_destroy(ev);
1669                         }
1670                 }
1671         }
1672 #endif
1673         if (call->audiostream!=NULL) {
1674                 // Beware that the application queue should not depend on treatments fron the
1675                 // mediastreamer queue.
1676                 audio_stream_iterate(call->audiostream);
1677
1678                 if (call->audiostream_app_evq){
1679                         OrtpEvent *ev;
1680                         while (NULL != (ev=ortp_ev_queue_get(call->audiostream_app_evq))){
1681                                 OrtpEventType evt=ortp_event_get_type(ev);
1682                                 OrtpEventData *evd=ortp_event_get_data(ev);
1683                                 if (evt == ORTP_EVENT_ZRTP_ENCRYPTION_CHANGED){
1684                                         linphone_call_audiostream_encryption_changed(call, evd->info.zrtp_stream_encrypted);
1685                                 } else if (evt == ORTP_EVENT_ZRTP_SAS_READY) {
1686                                         linphone_call_audiostream_auth_token_ready(call, evd->info.zrtp_sas.sas, evd->info.zrtp_sas.verified);
1687                                 } else if (evt == ORTP_EVENT_RTCP_PACKET_RECEIVED) {
1688                                         call->stats[LINPHONE_CALL_STATS_AUDIO].round_trip_delay = rtp_session_get_round_trip_propagation(call->audiostream->session);
1689                                         if(call->stats[LINPHONE_CALL_STATS_AUDIO].received_rtcp != NULL)
1690                                                 freemsg(call->stats[LINPHONE_CALL_STATS_AUDIO].received_rtcp);
1691                                         call->stats[LINPHONE_CALL_STATS_AUDIO].received_rtcp = evd->packet;
1692                                         evd->packet = NULL;
1693                                         if (lc->vtable.call_stats_updated)
1694                                                 lc->vtable.call_stats_updated(lc, call, &call->stats[LINPHONE_CALL_STATS_AUDIO]);
1695                                 } else if (evt == ORTP_EVENT_RTCP_PACKET_EMITTED) {
1696                                         memcpy(&call->stats[LINPHONE_CALL_STATS_AUDIO].jitter_stats, rtp_session_get_jitter_stats(call->audiostream->session), sizeof(jitter_stats_t));
1697                                         if(call->stats[LINPHONE_CALL_STATS_AUDIO].sent_rtcp != NULL)
1698                                                 freemsg(call->stats[LINPHONE_CALL_STATS_AUDIO].sent_rtcp);
1699                                         call->stats[LINPHONE_CALL_STATS_AUDIO].sent_rtcp = evd->packet;
1700                                         evd->packet = NULL;
1701                                         if (lc->vtable.call_stats_updated)
1702                                                 lc->vtable.call_stats_updated(lc, call, &call->stats[LINPHONE_CALL_STATS_AUDIO]);
1703                                 }
1704                                 ortp_event_destroy(ev);
1705                         }
1706                 }
1707         }
1708         if (call->state==LinphoneCallStreamsRunning && one_second_elapsed && call->audiostream!=NULL && disconnect_timeout>0 )
1709                 disconnected=!audio_stream_alive(call->audiostream,disconnect_timeout);
1710         if (disconnected)
1711                 linphone_core_disconnected(call->core,call);
1712 }
1713
1714 void linphone_call_log_completed(LinphoneCall *call){
1715         LinphoneCore *lc=call->core;
1716
1717         call->log->duration=time(NULL)-call->start_time;
1718
1719         if (call->log->status==LinphoneCallMissed){
1720                 char *info;
1721                 lc->missed_calls++;
1722                 info=ortp_strdup_printf(ngettext("You have missed %i call.",
1723                                          "You have missed %i calls.", lc->missed_calls),
1724                                 lc->missed_calls);
1725         if (lc->vtable.display_status!=NULL)
1726             lc->vtable.display_status(lc,info);
1727                 ms_free(info);
1728         }
1729         lc->call_logs=ms_list_prepend(lc->call_logs,(void *)call->log);
1730         if (ms_list_size(lc->call_logs)>lc->max_call_logs){
1731                 MSList *elem,*prevelem=NULL;
1732                 /*find the last element*/
1733                 for(elem=lc->call_logs;elem!=NULL;elem=elem->next){
1734                         prevelem=elem;
1735                 }
1736                 elem=prevelem;
1737                 linphone_call_log_destroy((LinphoneCallLog*)elem->data);
1738                 lc->call_logs=ms_list_remove_link(lc->call_logs,elem);
1739         }
1740         if (lc->vtable.call_log_updated!=NULL){
1741                 lc->vtable.call_log_updated(lc,call->log);
1742         }
1743         call_logs_write_to_config_file(lc);
1744 }
1745
1746 LinphoneCallState linphone_call_get_transfer_state(LinphoneCall *call) {
1747         return call->transfer_state;
1748 }
1749
1750 void linphone_call_set_transfer_state(LinphoneCall* call, LinphoneCallState state) {
1751         if (state != call->transfer_state) {
1752                 LinphoneCore* lc = call->core;
1753                 call->transfer_state = state;
1754                 if (lc->vtable.transfer_state_changed)
1755                         lc->vtable.transfer_state_changed(lc, call, state);
1756         }
1757 }
1758