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 char* linphone_call_get_authentication_token(LinphoneCall *call){
  72         return call->auth_token;
  73 }
  74
  75 bool_t linphone_call_get_authentication_token_verified(LinphoneCall *call){
  76         return call->auth_token_verified;
  77 }
  78
  79 static bool_t linphone_call_are_all_streams_encrypted(LinphoneCall *call) {
  80         // Check ZRTP encryption in audiostream
  81         if (!call->audiostream_encrypted) {
  82                 return FALSE;
  83         }
  84
  85 #ifdef VIDEO_ENABLED
  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) {
  89                 return FALSE;
  90         }
  91 #endif
  92
  93         return TRUE;
  94 }
  95
  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);
 103         } else {
 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);
 108         }
 109 }
 110
 111 #ifdef VIDEO_ENABLED
 112 static void linphone_call_videostream_encryption_changed(void *data, bool_t encrypted){
 113         ms_message("Video stream is %s", encrypted ? "encrypted" : "not encrypted");
 114
 115         LinphoneCall *call = (LinphoneCall *)data;
 116         call->videostream_encrypted=encrypted;
 117         propagate_encryption_changed(call);
 118 }
 119 #endif
 120
 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");
 124
 125         LinphoneCall *call = (LinphoneCall *)data;
 126         call->audiostream_encrypted=encrypted;
 127
 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);
 131         }
 132
 133         propagate_encryption_changed(call);
 134
 135
 136 #ifdef VIDEO_ENABLED
 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,&params);
 144         }
 145 #endif
 146 }
 147
 148
 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);
 153
 154         call->auth_token=ms_strdup(auth_token);
 155         call->auth_token_verified=verified;
 156
 157         ms_message("Authentication token is %s (%s)", auth_token, verified?"verified":"unverified");
 158 }
 159
 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");
 163         }
 164         if (call->audiostream->ortpZrtpContext==NULL){
 165                 ms_error("linphone_call_set_authentication_token_verified(): No zrtp context.");
 166         }
 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);
 171         }
 172         call->auth_token_verified=verified;
 173         propagate_encryption_changed(call);
 174 }
 175
 176 static MSList *make_codec_list(LinphoneCore *lc, const MSList *codecs, int bandwidth_limit,int* max_sample_rate){
 177         MSList *l=NULL;
 178         const MSList *it;
 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);
 185                                 continue;
 186                         }
 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);
 190                         }
 191                 }
 192         }
 193         return l;
 194 }
 195
 196 static SalMediaDescription *_create_local_media_description(LinphoneCore *lc, LinphoneCall *call, unsigned int session_id, unsigned int session_ver){
 197         MSList *l;
 198         PayloadType *pt;
 199         int i;
 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();
 204
 205
 206         md->session_id=session_id;
 207         md->session_ver=session_ver;
 208         md->nstreams=1;
 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);
 212
 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;
 224
 225
 226
 227         if (call->params.has_video){
 228                 md->nstreams++;
 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;
 234         }
 235
 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;
 247                 }
 248         }
 249
 250         linphone_address_destroy(addr);
 251         return md;
 252 }
 253
 254 void update_local_media_description(LinphoneCore *lc, LinphoneCall *call){
 255         SalMediaDescription *md=call->localdesc;
 256         if (md== NULL) {
 257                 call->localdesc = create_local_media_description(lc,call);
 258         } else {
 259                 call->localdesc = _create_local_media_description(lc,call,md->session_id,md->session_ver+1);
 260                 sal_media_description_unref(md);
 261         }
 262 }
 263
 264 SalMediaDescription *create_local_media_description(LinphoneCore *lc, LinphoneCall *call){
 265         unsigned int id=rand() & 0xfff;
 266         return _create_local_media_description(lc,call,id,id);
 267 }
 268
 269 static int find_port_offset(LinphoneCore *lc){
 270         int offset;
 271         MSList *elem;
 272         int audio_port;
 273         bool_t already_used=FALSE;
 274         for(offset=0;offset<100;offset+=2){
 275                 audio_port=linphone_core_get_audio_port (lc)+offset;
 276                 already_used=FALSE;
 277                 for(elem=lc->calls;elem!=NULL;elem=elem->next){
 278                         LinphoneCall *call=(LinphoneCall*)elem->data;
 279                         if (call->audio_port==audio_port) {
 280                                 already_used=TRUE;
 281                                 break;
 282                         }
 283                 }
 284                 if (!already_used) break;
 285         }
 286         if (offset==100){
 287                 ms_error("Could not find any free port !");
 288                 return -1;
 289         }
 290         return offset;
 291 }
 292
 293 static void linphone_call_init_common(LinphoneCall *call, LinphoneAddress *from, LinphoneAddress *to){
 294         int port_offset;
 295         call->magic=linphone_call_magic;
 296         call->refcnt=1;
 297         call->state=LinphoneCallIdle;
 298         call->transfer_state = LinphoneCallIdle;
 299         call->start_time=time(NULL);
 300         call->media_start_time=0;
 301         call->log=linphone_call_log_new(call, from, to);
 302         call->owns_call_log=TRUE;
 303         linphone_core_notify_all_friends(call->core,LinphoneStatusOnThePhone);
 304         port_offset=find_port_offset (call->core);
 305         if (port_offset==-1) return;
 306         call->audio_port=linphone_core_get_audio_port(call->core)+port_offset;
 307         call->video_port=linphone_core_get_video_port(call->core)+port_offset;
 308         linphone_call_init_stats(&call->stats[LINPHONE_CALL_STATS_AUDIO], LINPHONE_CALL_STATS_AUDIO);
 309         linphone_call_init_stats(&call->stats[LINPHONE_CALL_STATS_VIDEO], LINPHONE_CALL_STATS_VIDEO);
 310 }
 311
 312 void linphone_call_init_stats(LinphoneCallStats *stats, int type) {
 313         stats->type = type;
 314         stats->received_rtcp = NULL;
 315         stats->sent_rtcp = NULL;
 316 }
 317
 318 static void discover_mtu(LinphoneCore *lc, const char *remote){
 319         int mtu;
 320         if (lc->net_conf.mtu==0 ){
 321                 /*attempt to discover mtu*/
 322                 mtu=ms_discover_mtu(remote);
 323                 if (mtu>0){
 324                         ms_set_mtu(mtu);
 325                         ms_message("Discovered mtu is %i, RTP payload max size is %i",
 326                                 mtu, ms_get_payload_max_size());
 327                 }
 328         }
 329 }
 330
 331 LinphoneCall * linphone_call_new_outgoing(struct _LinphoneCore *lc, LinphoneAddress *from, LinphoneAddress *to, const LinphoneCallParams *params)
 332 {
 333         LinphoneCall *call=ms_new0(LinphoneCall,1);
 334         call->dir=LinphoneCallOutgoing;
 335         call->op=sal_op_new(lc->sal);
 336         sal_op_set_user_pointer(call->op,call);
 337         call->core=lc;
 338         linphone_core_get_local_ip(lc,linphone_address_get_domain(to),call->localip);
 339         linphone_call_init_common(call,from,to);
 340         call->params=*params;
 341         call->localdesc=create_local_media_description (lc,call);
 342         call->camera_active=params->has_video;
 343         if (linphone_core_get_firewall_policy(call->core)==LinphonePolicyUseStun)
 344                 linphone_core_run_stun_tests(call->core,call);
 345         discover_mtu(lc,linphone_address_get_domain (to));
 346         if (params->referer){
 347                 sal_call_set_referer(call->op,params->referer->op);
 348                 call->referer=linphone_call_ref(params->referer);
 349         }
 350         return call;
 351 }
 352
 353 LinphoneCall * linphone_call_new_incoming(LinphoneCore *lc, LinphoneAddress *from, LinphoneAddress *to, SalOp *op){
 354         LinphoneCall *call=ms_new0(LinphoneCall,1);
 355         char *from_str;
 356
 357         call->dir=LinphoneCallIncoming;
 358         sal_op_set_user_pointer(op,call);
 359         call->op=op;
 360         call->core=lc;
 361
 362         if (lc->sip_conf.ping_with_options){
 363                 /*the following sends an option request back to the caller so that
 364                  we get a chance to discover our nat'd address before answering.*/
 365                 call->ping_op=sal_op_new(lc->sal);
 366                 from_str=linphone_address_as_string_uri_only(from);
 367                 sal_op_set_route(call->ping_op,sal_op_get_network_origin(op));
 368                 sal_op_set_user_pointer(call->ping_op,call);
 369                 sal_ping(call->ping_op,linphone_core_find_best_identity(lc,from,NULL),from_str);
 370                 ms_free(from_str);
 371         }
 372
 373         linphone_address_clean(from);
 374         linphone_core_get_local_ip(lc,linphone_address_get_domain(from),call->localip);
 375         linphone_call_init_common(call, from, to);
 376         linphone_core_init_default_params(lc, &call->params);
 377         call->params.has_video &= !!lc->video_policy.automatically_accept;
 378         call->localdesc=create_local_media_description (lc,call);
 379         call->camera_active=call->params.has_video;
 380         if (linphone_core_get_firewall_policy(call->core)==LinphonePolicyUseStun)
 381                 linphone_core_run_stun_tests(call->core,call);
 382         discover_mtu(lc,linphone_address_get_domain(from));
 383         return call;
 384 }
 385
 386 /* this function is called internally to get rid of a call.
 387  It performs the following tasks:
 388  - remove the call from the internal list of calls
 389  - update the call logs accordingly
 390 */
 391
 392 static void linphone_call_set_terminated(LinphoneCall *call){
 393         LinphoneCore *lc=call->core;
 394
 395         linphone_core_update_allocated_audio_bandwidth(lc);
 396
 397         call->owns_call_log=FALSE;
 398         linphone_call_log_completed(call);
 399
 400
 401         if (call == lc->current_call){
 402                 ms_message("Resetting the current call");
 403                 lc->current_call=NULL;
 404         }
 405
 406         if (linphone_core_del_call(lc,call) != 0){
 407                 ms_error("Could not remove the call from the list !!!");
 408         }
 409
 410         if (ms_list_size(lc->calls)==0)
 411                 linphone_core_notify_all_friends(lc,lc->presence_mode);
 412
 413         linphone_core_conference_check_uninit(lc);
 414         if (call->ringing_beep){
 415                 linphone_core_stop_dtmf(lc);
 416                 call->ringing_beep=FALSE;
 417         }
 418         if (call->referer){
 419                 linphone_call_unref(call->referer);
 420                 call->referer=NULL;
 421         }
 422 }
 423
 424 void linphone_call_fix_call_parameters(LinphoneCall *call){
 425         call->params.has_video=call->current_params.has_video;
 426         call->params.media_encryption=call->current_params.media_encryption;
 427 }
 428
 429 const char *linphone_call_state_to_string(LinphoneCallState cs){
 430         switch (cs){
 431                 case LinphoneCallIdle:
 432                         return "LinphoneCallIdle";
 433                 case LinphoneCallIncomingReceived:
 434                         return "LinphoneCallIncomingReceived";
 435                 case LinphoneCallOutgoingInit:
 436                         return "LinphoneCallOutgoingInit";
 437                 case LinphoneCallOutgoingProgress:
 438                         return "LinphoneCallOutgoingProgress";
 439                 case LinphoneCallOutgoingRinging:
 440                         return "LinphoneCallOutgoingRinging";
 441                 case LinphoneCallOutgoingEarlyMedia:
 442                         return "LinphoneCallOutgoingEarlyMedia";
 443                 case LinphoneCallConnected:
 444                         return "LinphoneCallConnected";
 445                 case LinphoneCallStreamsRunning:
 446                         return "LinphoneCallStreamsRunning";
 447                 case LinphoneCallPausing:
 448                         return "LinphoneCallPausing";
 449                 case LinphoneCallPaused:
 450                         return "LinphoneCallPaused";
 451                 case LinphoneCallResuming:
 452                         return "LinphoneCallResuming";
 453                 case LinphoneCallRefered:
 454                         return "LinphoneCallRefered";
 455                 case LinphoneCallError:
 456                         return "LinphoneCallError";
 457                 case LinphoneCallEnd:
 458                         return "LinphoneCallEnd";
 459                 case LinphoneCallPausedByRemote:
 460                         return "LinphoneCallPausedByRemote";
 461                 case LinphoneCallUpdatedByRemote:
 462                         return "LinphoneCallUpdatedByRemote";
 463                 case LinphoneCallIncomingEarlyMedia:
 464                         return "LinphoneCallIncomingEarlyMedia";
 465                 case LinphoneCallUpdated:
 466                         return "LinphoneCallUpdated";
 467                 case LinphoneCallReleased:
 468                         return "LinphoneCallReleased";
 469         }
 470         return "undefined state";
 471 }
 472
 473 void linphone_call_set_state(LinphoneCall *call, LinphoneCallState cstate, const char *message){
 474         LinphoneCore *lc=call->core;
 475
 476         if (call->state!=cstate){
 477                 if (call->state==LinphoneCallEnd || call->state==LinphoneCallError){
 478                         if (cstate!=LinphoneCallReleased){
 479                                 ms_warning("Spurious call state change from %s to %s, ignored.",linphone_call_state_to_string(call->state),
 480                                    linphone_call_state_to_string(cstate));
 481                                 return;
 482                         }
 483                 }
 484                 ms_message("Call %p: moving from state %s to %s",call,linphone_call_state_to_string(call->state),
 485                            linphone_call_state_to_string(cstate));
 486                 if (cstate!=LinphoneCallRefered){
 487                         /*LinphoneCallRefered is rather an event, not a state.
 488                          Indeed it does not change the state of the call (still paused or running)*/
 489                         call->state=cstate;
 490                 }
 491                 if (cstate==LinphoneCallEnd || cstate==LinphoneCallError){
 492              switch(call->reason){
 493                                 case LinphoneReasonDeclined:
 494                                         call->log->status=LinphoneCallDeclined;
 495                                 case LinphoneReasonNotAnswered:
 496                                         call->log->status=LinphoneCallMissed;
 497                                 break;
 498                                 default:
 499                                 break;
 500                         }
 501                         linphone_call_set_terminated (call);
 502                 }
 503                 if (cstate == LinphoneCallConnected) {
 504                         call->log->status=LinphoneCallSuccess;
 505                         call->media_start_time=time(NULL);
 506                 }
 507
 508                 if (lc->vtable.call_state_changed)
 509                         lc->vtable.call_state_changed(lc,call,cstate,message);
 510                 if (cstate==LinphoneCallReleased){
 511                         if (call->op!=NULL) {
 512                                 /* so that we cannot have anymore upcalls for SAL
 513                                  concerning this call*/
 514                                 sal_op_release(call->op);
 515                                 call->op=NULL;
 516                         }
 517                         linphone_call_unref(call);
 518                 }
 519         }
 520 }
 521
 522 static void linphone_call_destroy(LinphoneCall *obj)
 523 {
 524         if (obj->op!=NULL) {
 525                 sal_op_release(obj->op);
 526                 obj->op=NULL;
 527         }
 528         if (obj->resultdesc!=NULL) {
 529                 sal_media_description_unref(obj->resultdesc);
 530                 obj->resultdesc=NULL;
 531         }
 532         if (obj->localdesc!=NULL) {
 533                 sal_media_description_unref(obj->localdesc);
 534                 obj->localdesc=NULL;
 535         }
 536         if (obj->ping_op) {
 537                 sal_op_release(obj->ping_op);
 538         }
 539         if (obj->refer_to){
 540                 ms_free(obj->refer_to);
 541         }
 542         if (obj->owns_call_log)
 543                 linphone_call_log_destroy(obj->log);
 544         if (obj->auth_token) {
 545                 ms_free(obj->auth_token);
 546         }
 547
 548         ms_free(obj);
 549 }
 550
 551 /**
 552  * @addtogroup call_control
 553  * @{
 554 **/
 555
 556 /**
 557  * Increments the call 's reference count.
 558  * An application that wishes to retain a pointer to call object
 559  * must use this function to unsure the pointer remains
 560  * valid. Once the application no more needs this pointer,
 561  * it must call linphone_call_unref().
 562 **/
 563 LinphoneCall * linphone_call_ref(LinphoneCall *obj){
 564         obj->refcnt++;
 565         return obj;
 566 }
 567
 568 /**
 569  * Decrements the call object reference count.
 570  * See linphone_call_ref().
 571 **/
 572 void linphone_call_unref(LinphoneCall *obj){
 573         obj->refcnt--;
 574         if (obj->refcnt==0){
 575                 linphone_call_destroy(obj);
 576         }
 577 }
 578
 579 /**
 580  * Returns current parameters associated to the call.
 581 **/
 582 const LinphoneCallParams * linphone_call_get_current_params(const LinphoneCall *call){
 583         return &call->current_params;
 584 }
 585
 586 static bool_t is_video_active(const SalStreamDescription *sd){
 587         return sd->port!=0 && sd->dir!=SalStreamInactive;
 588 }
 589
 590 /**
 591  * Returns call parameters proposed by remote.
 592  *
 593  * This is useful when receiving an incoming call, to know whether the remote party
 594  * supports video, encryption or whatever.
 595 **/
 596 const LinphoneCallParams * linphone_call_get_remote_params(LinphoneCall *call){
 597         LinphoneCallParams *cp=&call->remote_params;
 598         memset(cp,0,sizeof(*cp));
 599         if (call->op){
 600                 SalMediaDescription *md=sal_call_get_remote_media_description(call->op);
 601                 if (md){
 602                         SalStreamDescription *asd,*vsd,*secure_asd,*secure_vsd;
 603
 604                         asd=sal_media_description_find_stream(md,SalProtoRtpAvp,SalAudio);
 605                         vsd=sal_media_description_find_stream(md,SalProtoRtpAvp,SalVideo);
 606                         secure_asd=sal_media_description_find_stream(md,SalProtoRtpSavp,SalAudio);
 607                         secure_vsd=sal_media_description_find_stream(md,SalProtoRtpSavp,SalVideo);
 608                         if (secure_vsd){
 609                                 cp->has_video=is_video_active(secure_vsd);
 610                                 if (secure_asd || asd==NULL)
 611                                         cp->media_encryption=LinphoneMediaEncryptionSRTP;
 612                         }else if (vsd){
 613                                 cp->has_video=is_video_active(vsd);
 614                         }
 615                         return cp;
 616                 }
 617         }
 618         return NULL;
 619 }
 620
 621 /**
 622  * Returns the remote address associated to this call
 623  *
 624 **/
 625 const LinphoneAddress * linphone_call_get_remote_address(const LinphoneCall *call){
 626         return call->dir==LinphoneCallIncoming ? call->log->from : call->log->to;
 627 }
 628
 629 /**
 630  * Returns the remote address associated to this call as a string.
 631  *
 632  * The result string must be freed by user using ms_free().
 633 **/
 634 char *linphone_call_get_remote_address_as_string(const LinphoneCall *call){
 635         return linphone_address_as_string(linphone_call_get_remote_address(call));
 636 }
 637
 638 /**
 639  * Retrieves the call's current state.
 640 **/
 641 LinphoneCallState linphone_call_get_state(const LinphoneCall *call){
 642         return call->state;
 643 }
 644
 645 /**
 646  * Returns the reason for a call termination (either error or normal termination)
 647 **/
 648 LinphoneReason linphone_call_get_reason(const LinphoneCall *call){
 649         return call->reason;
 650 }
 651
 652 /**
 653  * Get the user_pointer in the LinphoneCall
 654  *
 655  * @ingroup call_control
 656  *
 657  * return user_pointer an opaque user pointer that can be retrieved at any time
 658 **/
 659 void *linphone_call_get_user_pointer(LinphoneCall *call)
 660 {
 661         return call->user_pointer;
 662 }
 663
 664 /**
 665  * Set the user_pointer in the LinphoneCall
 666  *
 667  * @ingroup call_control
 668  *
 669  * the user_pointer is an opaque user pointer that can be retrieved at any time in the LinphoneCall
 670 **/
 671 void linphone_call_set_user_pointer(LinphoneCall *call, void *user_pointer)
 672 {
 673         call->user_pointer = user_pointer;
 674 }
 675
 676 /**
 677  * Returns the call log associated to this call.
 678 **/
 679 LinphoneCallLog *linphone_call_get_call_log(const LinphoneCall *call){
 680         return call->log;
 681 }
 682
 683 /**
 684  * Returns the refer-to uri (if the call was transfered).
 685 **/
 686 const char *linphone_call_get_refer_to(const LinphoneCall *call){
 687         return call->refer_to;
 688 }
 689
 690 /**
 691  * Returns direction of the call (incoming or outgoing).
 692 **/
 693 LinphoneCallDir linphone_call_get_dir(const LinphoneCall *call){
 694         return call->log->dir;
 695 }
 696
 697 /**
 698  * Returns the far end's user agent description string, if available.
 699 **/
 700 const char *linphone_call_get_remote_user_agent(LinphoneCall *call){
 701         if (call->op){
 702                 return sal_op_get_remote_ua (call->op);
 703         }
 704         return NULL;
 705 }
 706
 707 /**
 708  * Returns true if this calls has received a transfer that has not been
 709  * executed yet.
 710  * Pending transfers are executed when this call is being paused or closed,
 711  * locally or by remote endpoint.
 712  * If the call is already paused while receiving the transfer request, the
 713  * transfer immediately occurs.
 714 **/
 715 bool_t linphone_call_has_transfer_pending(const LinphoneCall *call){
 716         return call->refer_pending;
 717 }
 718
 719 /**
 720  * Returns call's duration in seconds.
 721 **/
 722 int linphone_call_get_duration(const LinphoneCall *call){
 723         if (call->media_start_time==0) return 0;
 724         return time(NULL)-call->media_start_time;
 725 }
 726
 727 /**
 728  * Returns the call object this call is replacing, if any.
 729  * Call replacement can occur during call transfers.
 730  * By default, the core automatically terminates the replaced call and accept the new one.
 731  * This function allows the application to know whether a new incoming call is a one that replaces another one.
 732 **/
 733 LinphoneCall *linphone_call_get_replaced_call(LinphoneCall *call){
 734         SalOp *op=sal_call_get_replaces(call->op);
 735         if (op){
 736                 return (LinphoneCall*)sal_op_get_user_pointer(op);
 737         }
 738         return NULL;
 739 }
 740
 741 /**
 742  * Indicate whether camera input should be sent to remote end.
 743 **/
 744 void linphone_call_enable_camera (LinphoneCall *call, bool_t enable){
 745 #ifdef VIDEO_ENABLED
 746         if (call->videostream!=NULL && call->videostream->ticker!=NULL){
 747                 LinphoneCore *lc=call->core;
 748                 MSWebCam *nowebcam=get_nowebcam_device();
 749                 if (call->camera_active!=enable && lc->video_conf.device!=nowebcam){
 750                         video_stream_change_camera(call->videostream,
 751                                      enable ? lc->video_conf.device : nowebcam);
 752                 }
 753         }
 754         call->camera_active=enable;
 755 #endif
 756 }
 757
 758 /**
 759  * Take a photo of currently received video and write it into a jpeg file.
 760 **/
 761 int linphone_call_take_video_snapshot(LinphoneCall *call, const char *file){
 762 #ifdef VIDEO_ENABLED
 763         if (call->videostream!=NULL && call->videostream->jpegwriter!=NULL){
 764                 return ms_filter_call_method(call->videostream->jpegwriter,MS_JPEG_WRITER_TAKE_SNAPSHOT,(void*)file);
 765         }
 766         ms_warning("Cannot take snapshot: no currently running video stream on this call.");
 767         return -1;
 768 #endif
 769         return -1;
 770 }
 771
 772 /**
 773  * Returns TRUE if camera pictures are sent to the remote party.
 774 **/
 775 bool_t linphone_call_camera_enabled (const LinphoneCall *call){
 776         return call->camera_active;
 777 }
 778
 779 /**
 780  * Enable video stream.
 781 **/
 782 void linphone_call_params_enable_video(LinphoneCallParams *cp, bool_t enabled){
 783         cp->has_video=enabled;
 784 }
 785
 786 const PayloadType* linphone_call_params_get_used_audio_codec(const LinphoneCallParams *cp) {
 787         return cp->audio_codec;
 788 }
 789
 790 const PayloadType* linphone_call_params_get_used_video_codec(const LinphoneCallParams *cp) {
 791         return cp->video_codec;
 792 }
 793
 794 /**
 795  * Returns whether video is enabled.
 796 **/
 797 bool_t linphone_call_params_video_enabled(const LinphoneCallParams *cp){
 798         return cp->has_video;
 799 }
 800
 801 enum LinphoneMediaEncryption linphone_call_params_get_media_encryption(const LinphoneCallParams *cp) {
 802         return cp->media_encryption;
 803 }
 804
 805 void linphone_call_params_set_media_encryption(LinphoneCallParams *cp, enum LinphoneMediaEncryption e) {
 806         cp->media_encryption = e;
 807 }
 808
 809
 810 /**
 811  * Enable sending of real early media (during outgoing calls).
 812 **/
 813 void linphone_call_params_enable_early_media_sending(LinphoneCallParams *cp, bool_t enabled){
 814         cp->real_early_media=enabled;
 815 }
 816
 817 bool_t linphone_call_params_early_media_sending_enabled(const LinphoneCallParams *cp){
 818         return cp->real_early_media;
 819 }
 820
 821 /**
 822  * Returns true if the call is part of the locally managed conference.
 823 **/
 824 bool_t linphone_call_params_local_conference_mode(const LinphoneCallParams *cp){
 825         return cp->in_conference;
 826 }
 827
 828 /**
 829  * Refine bandwidth settings for this call by setting a bandwidth limit for audio streams.
 830  * As a consequence, codecs whose bitrates are not compatible with this limit won't be used.
 831 **/
 832 void linphone_call_params_set_audio_bandwidth_limit(LinphoneCallParams *cp, int bandwidth){
 833         cp->audio_bw=bandwidth;
 834 }
 835
 836 #ifdef VIDEO_ENABLED
 837 /**
 838  * Request remote side to send us a Video Fast Update.
 839 **/
 840 void linphone_call_send_vfu_request(LinphoneCall *call)
 841 {
 842         if (LinphoneCallStreamsRunning == linphone_call_get_state(call))
 843                 sal_call_send_vfu_request(call->op);
 844 }
 845 #endif
 846
 847 /**
 848  *
 849 **/
 850 LinphoneCallParams * linphone_call_params_copy(const LinphoneCallParams *cp){
 851         LinphoneCallParams *ncp=ms_new0(LinphoneCallParams,1);
 852         memcpy(ncp,cp,sizeof(LinphoneCallParams));
 853         return ncp;
 854 }
 855
 856 /**
 857  *
 858 **/
 859 void linphone_call_params_destroy(LinphoneCallParams *p){
 860         ms_free(p);
 861 }
 862
 863 /**
 864  * @}
 865 **/
 866
 867
 868 #ifdef TEST_EXT_RENDERER
 869 static void rendercb(void *data, const MSPicture *local, const MSPicture *remote){
 870         ms_message("rendercb, local buffer=%p, remote buffer=%p",
 871                    local ? local->planes[0] : NULL, remote? remote->planes[0] : NULL);
 872 }
 873 #endif
 874
 875 #ifdef VIDEO_ENABLED
 876 static void video_stream_event_cb(void *user_pointer, const MSFilter *f, const unsigned int event_id, const void *args){
 877     LinphoneCall* call = (LinphoneCall*) user_pointer;
 878         ms_warning("In linphonecall.c: video_stream_event_cb");
 879         switch (event_id) {
 880                 case MS_VIDEO_DECODER_DECODING_ERRORS:
 881                         ms_warning("Case is MS_VIDEO_DECODER_DECODING_ERRORS");
 882                         linphone_call_send_vfu_request(call);
 883                         break;
 884         case MS_VIDEO_DECODER_FIRST_IMAGE_DECODED:
 885             ms_message("First video frame decoded successfully");
 886             if (call->nextVideoFrameDecoded._func != NULL)
 887                 call->nextVideoFrameDecoded._func(call, call->nextVideoFrameDecoded._user_data);
 888             break;
 889                 default:
 890                         ms_warning("Unhandled event %i", event_id);
 891                         break;
 892         }
 893 }
 894 #endif
 895
 896 void linphone_call_set_next_video_frame_decoded_callback(LinphoneCall *call, LinphoneCallCbFunc cb, void* user_data) {
 897     call->nextVideoFrameDecoded._func = cb;
 898     call->nextVideoFrameDecoded._user_data = user_data;
 899 #ifdef VIDEO_ENABLED
 900     ms_filter_call_method_noarg(call->videostream->decoder, MS_VIDEO_DECODER_RESET_FIRST_IMAGE_NOTIFICATION);
 901 #endif
 902 }
 903
 904 void linphone_call_init_media_streams(LinphoneCall *call){
 905         LinphoneCore *lc=call->core;
 906         SalMediaDescription *md=call->localdesc;
 907         AudioStream *audiostream;
 908
 909         call->audiostream=audiostream=audio_stream_new(md->streams[0].port,linphone_core_ipv6_enabled(lc));
 910         if (linphone_core_echo_limiter_enabled(lc)){
 911                 const char *type=lp_config_get_string(lc->config,"sound","el_type","mic");
 912                 if (strcasecmp(type,"mic")==0)
 913                         audio_stream_enable_echo_limiter(audiostream,ELControlMic);
 914                 else if (strcasecmp(type,"full")==0)
 915                         audio_stream_enable_echo_limiter(audiostream,ELControlFull);
 916         }
 917         audio_stream_enable_gain_control(audiostream,TRUE);
 918         if (linphone_core_echo_cancellation_enabled(lc)){
 919                 int len,delay,framesize;
 920                 const char *statestr=lp_config_get_string(lc->config,"sound","ec_state",NULL);
 921                 len=lp_config_get_int(lc->config,"sound","ec_tail_len",0);
 922                 delay=lp_config_get_int(lc->config,"sound","ec_delay",0);
 923                 framesize=lp_config_get_int(lc->config,"sound","ec_framesize",0);
 924                 audio_stream_set_echo_canceller_params(audiostream,len,delay,framesize);
 925                 if (statestr && audiostream->ec){
 926                         ms_filter_call_method(audiostream->ec,MS_ECHO_CANCELLER_SET_STATE_STRING,(void*)statestr);
 927                 }
 928         }
 929         audio_stream_enable_automatic_gain_control(audiostream,linphone_core_agc_enabled(lc));
 930         {
 931                 int enabled=lp_config_get_int(lc->config,"sound","noisegate",0);
 932                 audio_stream_enable_noise_gate(audiostream,enabled);
 933         }
 934
 935         if (lc->rtptf){
 936                 RtpTransport *artp=lc->rtptf->audio_rtp_func(lc->rtptf->audio_rtp_func_data, call->audio_port);
 937                 RtpTransport *artcp=lc->rtptf->audio_rtcp_func(lc->rtptf->audio_rtcp_func_data, call->audio_port+1);
 938                 rtp_session_set_transports(audiostream->session,artp,artcp);
 939         }
 940
 941         call->audiostream_app_evq = ortp_ev_queue_new();
 942         rtp_session_register_event_queue(audiostream->session,call->audiostream_app_evq);
 943
 944 #ifdef VIDEO_ENABLED
 945
 946         if ((lc->video_conf.display || lc->video_conf.capture) && md->streams[1].port>0){
 947                 int video_recv_buf_size=lp_config_get_int(lc->config,"video","recv_buf_size",0);
 948                 call->videostream=video_stream_new(md->streams[1].port,linphone_core_ipv6_enabled(lc));
 949                 video_stream_enable_display_filter_auto_rotate(call->videostream, lp_config_get_int(lc->config,"video","display_filter_auto_rotate",0));
 950                 if (video_recv_buf_size>0) rtp_session_set_recv_buf_size(call->videostream->session,video_recv_buf_size);
 951
 952                 if( lc->video_conf.displaytype != NULL)
 953                         video_stream_set_display_filter_name(call->videostream,lc->video_conf.displaytype);
 954                 video_stream_set_event_callback(call->videostream,video_stream_event_cb, call);
 955                 if (lc->rtptf){
 956                         RtpTransport *vrtp=lc->rtptf->video_rtp_func(lc->rtptf->video_rtp_func_data, call->video_port);
 957                         RtpTransport *vrtcp=lc->rtptf->video_rtcp_func(lc->rtptf->video_rtcp_func_data, call->video_port+1);
 958                         rtp_session_set_transports(call->videostream->session,vrtp,vrtcp);
 959                 }
 960                 call->videostream_app_evq = ortp_ev_queue_new();
 961                 rtp_session_register_event_queue(call->videostream->session,call->videostream_app_evq);
 962 #ifdef TEST_EXT_RENDERER
 963                 video_stream_set_render_callback(call->videostream,rendercb,NULL);
 964 #endif
 965         }
 966 #else
 967         call->videostream=NULL;
 968 #endif
 969 }
 970
 971
 972 static int dtmf_tab[16]={'0','1','2','3','4','5','6','7','8','9','*','#','A','B','C','D'};
 973
 974 static void linphone_core_dtmf_received(RtpSession* s, int dtmf, void* user_data){
 975         LinphoneCore* lc = (LinphoneCore*)user_data;
 976         if (dtmf<0 || dtmf>15){
 977                 ms_warning("Bad dtmf value %i",dtmf);
 978                 return;
 979         }
 980         if (lc->vtable.dtmf_received != NULL)
 981                 lc->vtable.dtmf_received(lc, linphone_core_get_current_call(lc), dtmf_tab[dtmf]);
 982 }
 983
 984 static void parametrize_equalizer(LinphoneCore *lc, AudioStream *st){
 985         if (st->equalizer){
 986                 MSFilter *f=st->equalizer;
 987                 int enabled=lp_config_get_int(lc->config,"sound","eq_active",0);
 988                 const char *gains=lp_config_get_string(lc->config,"sound","eq_gains",NULL);
 989                 ms_filter_call_method(f,MS_EQUALIZER_SET_ACTIVE,&enabled);
 990                 if (enabled){
 991                         if (gains){
 992                                 do{
 993                                         int bytes;
 994                                         MSEqualizerGain g;
 995                                         if (sscanf(gains,"%f:%f:%f %n",&g.frequency,&g.gain,&g.width,&bytes)==3){
 996                                                 ms_message("Read equalizer gains: %f(~%f) --> %f",g.frequency,g.width,g.gain);
 997                                                 ms_filter_call_method(f,MS_EQUALIZER_SET_GAIN,&g);
 998                                                 gains+=bytes;
 999                                         }else break;
1000                                 }while(1);
1001                         }
1002                 }
1003         }
1004 }
1005
1006 void _post_configure_audio_stream(AudioStream *st, LinphoneCore *lc, bool_t muted){
1007         float mic_gain=lp_config_get_float(lc->config,"sound","mic_gain",1);
1008         float thres = 0;
1009         float recv_gain;
1010         float ng_thres=lp_config_get_float(lc->config,"sound","ng_thres",0.05);
1011         float ng_floorgain=lp_config_get_float(lc->config,"sound","ng_floorgain",0);
1012         int dc_removal=lp_config_get_int(lc->config,"sound","dc_removal",0);
1013
1014         if (!muted)
1015                 audio_stream_set_mic_gain(st,mic_gain);
1016         else
1017                 audio_stream_set_mic_gain(st,0);
1018
1019         recv_gain = lc->sound_conf.soft_play_lev;
1020         if (recv_gain != 0) {
1021                 linphone_core_set_playback_gain_db (lc,recv_gain);
1022         }
1023
1024         if (st->volsend){
1025                 ms_filter_call_method(st->volsend,MS_VOLUME_REMOVE_DC,&dc_removal);
1026                 float speed=lp_config_get_float(lc->config,"sound","el_speed",-1);
1027                 thres=lp_config_get_float(lc->config,"sound","el_thres",-1);
1028                 float force=lp_config_get_float(lc->config,"sound","el_force",-1);
1029                 int sustain=lp_config_get_int(lc->config,"sound","el_sustain",-1);
1030                 float transmit_thres=lp_config_get_float(lc->config,"sound","el_transmit_thres",-1);
1031                 MSFilter *f=NULL;
1032                 f=st->volsend;
1033                 if (speed==-1) speed=0.03;
1034                 if (force==-1) force=25;
1035                 ms_filter_call_method(f,MS_VOLUME_SET_EA_SPEED,&speed);
1036                 ms_filter_call_method(f,MS_VOLUME_SET_EA_FORCE,&force);
1037                 if (thres!=-1)
1038                         ms_filter_call_method(f,MS_VOLUME_SET_EA_THRESHOLD,&thres);
1039                 if (sustain!=-1)
1040                         ms_filter_call_method(f,MS_VOLUME_SET_EA_SUSTAIN,&sustain);
1041                 if (transmit_thres!=-1)
1042                                 ms_filter_call_method(f,MS_VOLUME_SET_EA_TRANSMIT_THRESHOLD,&transmit_thres);
1043
1044                 ms_filter_call_method(st->volsend,MS_VOLUME_SET_NOISE_GATE_THRESHOLD,&ng_thres);
1045                 ms_filter_call_method(st->volsend,MS_VOLUME_SET_NOISE_GATE_FLOORGAIN,&ng_floorgain);
1046         }
1047         if (st->volrecv){
1048                 /* parameters for a limited noise-gate effect, using echo limiter threshold */
1049                 float floorgain = 1/mic_gain;
1050                 int spk_agc=lp_config_get_int(lc->config,"sound","speaker_agc_enabled",0);
1051                 ms_filter_call_method(st->volrecv, MS_VOLUME_ENABLE_AGC, &spk_agc);
1052                 ms_filter_call_method(st->volrecv,MS_VOLUME_SET_NOISE_GATE_THRESHOLD,&ng_thres);
1053                 ms_filter_call_method(st->volrecv,MS_VOLUME_SET_NOISE_GATE_FLOORGAIN,&floorgain);
1054         }
1055         parametrize_equalizer(lc,st);
1056 }
1057
1058 static void post_configure_audio_streams(LinphoneCall*call){
1059         AudioStream *st=call->audiostream;
1060         LinphoneCore *lc=call->core;
1061         _post_configure_audio_stream(st,lc,call->audio_muted);
1062         if (lc->vtable.dtmf_received!=NULL){
1063                 /* replace by our default action*/
1064                 audio_stream_play_received_dtmfs(call->audiostream,FALSE);
1065                 rtp_session_signal_connect(call->audiostream->session,"telephone-event",(RtpCallback)linphone_core_dtmf_received,(unsigned long)lc);
1066         }
1067 }
1068
1069 static RtpProfile *make_profile(LinphoneCall *call, const SalMediaDescription *md, const SalStreamDescription *desc, int *used_pt){
1070         int bw;
1071         const MSList *elem;
1072         RtpProfile *prof=rtp_profile_new("Call profile");
1073         bool_t first=TRUE;
1074         int remote_bw=0;
1075         LinphoneCore *lc=call->core;
1076         int up_ptime=0;
1077         *used_pt=-1;
1078
1079         for(elem=desc->payloads;elem!=NULL;elem=elem->next){
1080                 PayloadType *pt=(PayloadType*)elem->data;
1081                 int number;
1082
1083                 if ((pt->flags & PAYLOAD_TYPE_FLAG_CAN_SEND) && first) {
1084                         if (desc->type==SalAudio){
1085                                 linphone_core_update_allocated_audio_bandwidth_in_call(call,pt);
1086                                 up_ptime=linphone_core_get_upload_ptime(lc);
1087                         }
1088                         *used_pt=payload_type_get_number(pt);
1089                         first=FALSE;
1090                 }
1091                 if (desc->bandwidth>0) remote_bw=desc->bandwidth;
1092                 else if (md->bandwidth>0) {
1093                         /*case where b=AS is given globally, not per stream*/
1094                         remote_bw=md->bandwidth;
1095                         if (desc->type==SalVideo){
1096                                 remote_bw=get_video_bandwidth(remote_bw,call->audio_bw);
1097                         }
1098                 }
1099
1100                 if (desc->type==SalAudio){
1101                                 bw=get_min_bandwidth(call->audio_bw,remote_bw);
1102                 }else bw=get_min_bandwidth(get_video_bandwidth(linphone_core_get_upload_bandwidth (lc),call->audio_bw),remote_bw);
1103                 if (bw>0) pt->normal_bitrate=bw*1000;
1104                 else if (desc->type==SalAudio){
1105                         pt->normal_bitrate=-1;
1106                 }
1107                 if (desc->ptime>0){
1108                         up_ptime=desc->ptime;
1109                 }
1110                 if (up_ptime>0){
1111                         char tmp[40];
1112                         snprintf(tmp,sizeof(tmp),"ptime=%i",up_ptime);
1113                         payload_type_append_send_fmtp(pt,tmp);
1114                 }
1115                 number=payload_type_get_number(pt);
1116                 if (rtp_profile_get_payload(prof,number)!=NULL){
1117                         ms_warning("A payload type with number %i already exists in profile !",number);
1118                 }else
1119                         rtp_profile_set_payload(prof,number,pt);
1120         }
1121         return prof;
1122 }
1123
1124
1125 static void setup_ring_player(LinphoneCore *lc, LinphoneCall *call){
1126         int pause_time=3000;
1127         audio_stream_play(call->audiostream,lc->sound_conf.ringback_tone);
1128         ms_filter_call_method(call->audiostream->soundread,MS_FILE_PLAYER_LOOP,&pause_time);
1129 }
1130
1131 #define LINPHONE_RTCP_SDES_TOOL "Linphone-" LINPHONE_VERSION
1132
1133 static bool_t linphone_call_sound_resources_available(LinphoneCall *call){
1134         LinphoneCore *lc=call->core;
1135         LinphoneCall *current=linphone_core_get_current_call(lc);
1136         return !linphone_core_is_in_conference(lc) &&
1137                 (current==NULL || current==call);
1138 }
1139 static int find_crypto_index_from_tag(const SalSrtpCryptoAlgo crypto[],unsigned char tag) {
1140     int i;
1141     for(i=0; i<SAL_CRYPTO_ALGO_MAX; i++) {
1142         if (crypto[i].tag == tag) {
1143             return i;
1144         }
1145     }
1146     return -1;
1147 }
1148 static void linphone_call_start_audio_stream(LinphoneCall *call, const char *cname, bool_t muted, bool_t send_ringbacktone, bool_t use_arc){
1149         LinphoneCore *lc=call->core;
1150         int jitt_comp=lc->rtp_conf.audio_jitt_comp;
1151         int used_pt=-1;
1152         /* look for savp stream first */
1153         const SalStreamDescription *stream=sal_media_description_find_stream(call->resultdesc,
1154                                                 SalProtoRtpSavp,SalAudio);
1155         /* no savp audio stream, use avp */
1156         if (!stream)
1157                 stream=sal_media_description_find_stream(call->resultdesc,
1158                                                 SalProtoRtpAvp,SalAudio);
1159
1160         if (stream && stream->dir!=SalStreamInactive && stream->port!=0){
1161                 MSSndCard *playcard=lc->sound_conf.lsd_card ?
1162                         lc->sound_conf.lsd_card : lc->sound_conf.play_sndcard;
1163                 MSSndCard *captcard=lc->sound_conf.capt_sndcard;
1164                 const char *playfile=lc->play_file;
1165                 const char *recfile=lc->rec_file;
1166                 call->audio_profile=make_profile(call,call->resultdesc,stream,&used_pt);
1167                 bool_t use_ec;
1168
1169                 if (used_pt!=-1){
1170                         call->current_params.audio_codec = rtp_profile_get_payload(call->audio_profile, used_pt);
1171                         if (playcard==NULL) {
1172                                 ms_warning("No card defined for playback !");
1173                         }
1174                         if (captcard==NULL) {
1175                                 ms_warning("No card defined for capture !");
1176                         }
1177                         /*Replace soundcard filters by inactive file players or recorders
1178                          when placed in recvonly or sendonly mode*/
1179                         if (stream->port==0 || stream->dir==SalStreamRecvOnly){
1180                                 captcard=NULL;
1181                                 playfile=NULL;
1182                         }else if (stream->dir==SalStreamSendOnly){
1183                                 playcard=NULL;
1184                                 captcard=NULL;
1185                                 recfile=NULL;
1186                                 /*And we will eventually play "playfile" if set by the user*/
1187                                 /*playfile=NULL;*/
1188                         }
1189                         if (send_ringbacktone){
1190                                 captcard=NULL;
1191                                 playfile=NULL;/* it is setup later*/
1192                         }
1193                         /*if playfile are supplied don't use soundcards*/
1194                         if (lc->use_files) {
1195                                 captcard=NULL;
1196                                 playcard=NULL;
1197                         }
1198                         if (call->params.in_conference){
1199                                 /* first create the graph without soundcard resources*/
1200                                 captcard=playcard=NULL;
1201                         }
1202                         if (!linphone_call_sound_resources_available(call)){
1203                                 ms_message("Sound resources are used by another call, not using soundcard.");
1204                                 captcard=playcard=NULL;
1205                         }
1206                         use_ec=captcard==NULL ? FALSE : linphone_core_echo_cancellation_enabled(lc);
1207                         if (playcard &&  stream->max_rate>0) ms_snd_card_set_preferred_sample_rate(playcard, stream->max_rate);
1208                         if (captcard &&  stream->max_rate>0) ms_snd_card_set_preferred_sample_rate(captcard, stream->max_rate);
1209                         audio_stream_enable_adaptive_bitrate_control(call->audiostream,use_arc);
1210                         audio_stream_start_full(
1211                                 call->audiostream,
1212                                 call->audio_profile,
1213                                 stream->addr[0]!='\0' ? stream->addr : call->resultdesc->addr,
1214                                 stream->port,
1215                                 linphone_core_rtcp_enabled(lc) ? (stream->port+1) : 0,
1216                                 used_pt,
1217                                 jitt_comp,
1218                                 playfile,
1219                                 recfile,
1220                                 playcard,
1221                                 captcard,
1222                                 use_ec
1223                                 );
1224                         post_configure_audio_streams(call);
1225                         if (muted && !send_ringbacktone){
1226                                 audio_stream_set_mic_gain(call->audiostream,0);
1227                         }
1228                         if (stream->dir==SalStreamSendOnly && playfile!=NULL){
1229                                 int pause_time=500;
1230                                 ms_filter_call_method(call->audiostream->soundread,MS_FILE_PLAYER_LOOP,&pause_time);
1231                         }
1232                         if (send_ringbacktone){
1233                                 setup_ring_player(lc,call);
1234                         }
1235                         audio_stream_set_rtcp_information(call->audiostream, cname, LINPHONE_RTCP_SDES_TOOL);
1236
1237             /* valid local tags are > 0 */
1238                         if (stream->proto == SalProtoRtpSavp) {
1239                 const SalStreamDescription *local_st_desc=sal_media_description_find_stream(call->localdesc,
1240                                                                                             SalProtoRtpSavp,SalAudio);
1241                 int crypto_idx = find_crypto_index_from_tag(local_st_desc->crypto, stream->crypto_local_tag);
1242
1243                 if (crypto_idx >= 0) {
1244                     audio_stream_enable_strp(
1245                                              call->audiostream,
1246                                              stream->crypto[0].algo,
1247                                              local_st_desc->crypto[crypto_idx].master_key,
1248                                              stream->crypto[0].master_key);
1249                     call->audiostream_encrypted=TRUE;
1250                 } else {
1251                     ms_warning("Failed to find local crypto algo with tag: %d", stream->crypto_local_tag);
1252                     call->audiostream_encrypted=FALSE;
1253                 }
1254                         }else call->audiostream_encrypted=FALSE;
1255                         if (call->params.in_conference){
1256                                 /*transform the graph to connect it to the conference filter */
1257                                 bool_t mute=stream->dir==SalStreamRecvOnly;
1258                                 linphone_call_add_to_conf(call, mute);
1259                         }
1260                         call->current_params.in_conference=call->params.in_conference;
1261                 }else ms_warning("No audio stream accepted ?");
1262         }
1263 }
1264
1265 static void linphone_call_start_video_stream(LinphoneCall *call, const char *cname,bool_t all_inputs_muted){
1266 #ifdef VIDEO_ENABLED
1267         LinphoneCore *lc=call->core;
1268         int used_pt=-1;
1269         /* look for savp stream first */
1270         const SalStreamDescription *vstream=sal_media_description_find_stream(call->resultdesc,
1271                                                 SalProtoRtpSavp,SalVideo);
1272         /* no savp audio stream, use avp */
1273         if (!vstream)
1274                 vstream=sal_media_description_find_stream(call->resultdesc,
1275                                                 SalProtoRtpAvp,SalVideo);
1276
1277         /* shutdown preview */
1278         if (lc->previewstream!=NULL) {
1279                 video_preview_stop(lc->previewstream);
1280                 lc->previewstream=NULL;
1281         }
1282
1283         if (vstream!=NULL && vstream->dir!=SalStreamInactive && vstream->port!=0) {
1284                 const char *addr=vstream->addr[0]!='\0' ? vstream->addr : call->resultdesc->addr;
1285                 call->video_profile=make_profile(call,call->resultdesc,vstream,&used_pt);
1286                 if (used_pt!=-1){
1287                         call->current_params.video_codec = rtp_profile_get_payload(call->video_profile, used_pt);
1288                         VideoStreamDir dir=VideoStreamSendRecv;
1289                         MSWebCam *cam=lc->video_conf.device;
1290                         bool_t is_inactive=FALSE;
1291
1292                         call->current_params.has_video=TRUE;
1293
1294                         video_stream_enable_adaptive_bitrate_control(call->videostream,
1295                                                                   linphone_core_adaptive_rate_control_enabled(lc));
1296                         video_stream_set_sent_video_size(call->videostream,linphone_core_get_preferred_video_size(lc));
1297                         video_stream_enable_self_view(call->videostream,lc->video_conf.selfview);
1298                         if (lc->video_window_id!=0)
1299                                 video_stream_set_native_window_id(call->videostream,lc->video_window_id);
1300                         if (lc->preview_window_id!=0)
1301                                 video_stream_set_native_preview_window_id (call->videostream,lc->preview_window_id);
1302                         video_stream_use_preview_video_window (call->videostream,lc->use_preview_window);
1303
1304                         if (vstream->dir==SalStreamSendOnly && lc->video_conf.capture ){
1305                                 cam=get_nowebcam_device();
1306                                 dir=VideoStreamSendOnly;
1307                         }else if (vstream->dir==SalStreamRecvOnly && lc->video_conf.display ){
1308                                 dir=VideoStreamRecvOnly;
1309                         }else if (vstream->dir==SalStreamSendRecv){
1310                                 if (lc->video_conf.display && lc->video_conf.capture)
1311                                         dir=VideoStreamSendRecv;
1312                                 else if (lc->video_conf.display)
1313                                         dir=VideoStreamRecvOnly;
1314                                 else
1315                                         dir=VideoStreamSendOnly;
1316                         }else{
1317                                 ms_warning("video stream is inactive.");
1318                                 /*either inactive or incompatible with local capabilities*/
1319                                 is_inactive=TRUE;
1320                         }
1321                         if (call->camera_active==FALSE || all_inputs_muted){
1322                                 cam=get_nowebcam_device();
1323                         }
1324                         if (!is_inactive){
1325                 call->log->video_enabled = TRUE;
1326                                 video_stream_set_direction (call->videostream, dir);
1327                                 ms_message("%s lc rotation:%d\n", __FUNCTION__, lc->device_rotation);
1328                                 video_stream_set_device_rotation(call->videostream, lc->device_rotation);
1329                                 video_stream_start(call->videostream,
1330                                         call->video_profile, addr, vstream->port,
1331                                         linphone_core_rtcp_enabled(lc) ? (vstream->port+1) : 0,
1332                                         used_pt, lc->rtp_conf.audio_jitt_comp, cam);
1333                                 video_stream_set_rtcp_information(call->videostream, cname,LINPHONE_RTCP_SDES_TOOL);
1334                         }
1335
1336                         if (vstream->proto == SalProtoRtpSavp) {
1337                                 const SalStreamDescription *local_st_desc=sal_media_description_find_stream(call->localdesc,
1338                                                 SalProtoRtpSavp,SalVideo);
1339
1340                                 video_stream_enable_strp(
1341                                         call->videostream,
1342                                         vstream->crypto[0].algo,
1343                                         local_st_desc->crypto[0].master_key,
1344                                         vstream->crypto[0].master_key
1345                                         );
1346                                 call->videostream_encrypted=TRUE;
1347                         }else{
1348                                 call->videostream_encrypted=FALSE;
1349                         }
1350                 }else ms_warning("No video stream accepted.");
1351         }else{
1352                 ms_warning("No valid video stream defined.");
1353         }
1354 #endif
1355 }
1356
1357 void linphone_call_start_media_streams(LinphoneCall *call, bool_t all_inputs_muted, bool_t send_ringbacktone){
1358         LinphoneCore *lc=call->core;
1359
1360         call->current_params.audio_codec = NULL;
1361         call->current_params.video_codec = NULL;
1362
1363         LinphoneAddress *me=linphone_core_get_primary_contact_parsed(lc);
1364         char *cname;
1365         bool_t use_arc=linphone_core_adaptive_rate_control_enabled(lc);
1366 #ifdef VIDEO_ENABLED
1367         const SalStreamDescription *vstream=sal_media_description_find_stream(call->resultdesc,
1368                                                         SalProtoRtpAvp,SalVideo);
1369 #endif
1370
1371         if(call->audiostream == NULL)
1372         {
1373                 ms_fatal("start_media_stream() called without prior init !");
1374                 return;
1375         }
1376         cname=linphone_address_as_string_uri_only(me);
1377
1378 #if defined(VIDEO_ENABLED)
1379         if (vstream!=NULL && vstream->dir!=SalStreamInactive && vstream->payloads!=NULL){
1380                 /*when video is used, do not make adaptive rate control on audio, it is stupid.*/
1381                 use_arc=FALSE;
1382         }
1383 #endif
1384         linphone_call_start_audio_stream(call,cname,all_inputs_muted,send_ringbacktone,use_arc);
1385         call->current_params.has_video=FALSE;
1386         if (call->videostream!=NULL) {
1387                 linphone_call_start_video_stream(call,cname,all_inputs_muted);
1388         }
1389
1390         call->all_muted=all_inputs_muted;
1391         call->playing_ringbacktone=send_ringbacktone;
1392         call->up_bw=linphone_core_get_upload_bandwidth(lc);
1393
1394         if (call->params.media_encryption==LinphoneMediaEncryptionZRTP) {
1395                 OrtpZrtpParams params;
1396                 /*will be set later when zrtp is activated*/
1397                 call->current_params.media_encryption=LinphoneMediaEncryptionNone;
1398
1399                 params.zid_file=lc->zrtp_secrets_cache;
1400                 audio_stream_enable_zrtp(call->audiostream,&params);
1401         }else if (call->params.media_encryption==LinphoneMediaEncryptionSRTP){
1402                 call->current_params.media_encryption=linphone_call_are_all_streams_encrypted(call) ?
1403                         LinphoneMediaEncryptionSRTP : LinphoneMediaEncryptionNone;
1404         }
1405
1406         /*also reflect the change if the "wished" params, in order to avoid to propose SAVP or video again
1407          * further in the call, for example during pause,resume, conferencing reINVITEs*/
1408         linphone_call_fix_call_parameters(call);
1409
1410         goto end;
1411         end:
1412                 ms_free(cname);
1413                 linphone_address_destroy(me);
1414 }
1415
1416 static void linphone_call_log_fill_stats(LinphoneCallLog *log, AudioStream *st){
1417         audio_stream_get_local_rtp_stats (st,&log->local_stats);
1418         log->quality=audio_stream_get_average_quality_rating(st);
1419 }
1420
1421 void linphone_call_stop_media_streams(LinphoneCall *call){
1422         if (call->audiostream!=NULL) {
1423                 rtp_session_unregister_event_queue(call->audiostream->session,call->audiostream_app_evq);
1424                 ortp_ev_queue_flush(call->audiostream_app_evq);
1425                 ortp_ev_queue_destroy(call->audiostream_app_evq);
1426
1427                 if (call->audiostream->ec){
1428                         const char *state_str=NULL;
1429                         ms_filter_call_method(call->audiostream->ec,MS_ECHO_CANCELLER_GET_STATE_STRING,&state_str);
1430                         if (state_str){
1431                                 ms_message("Writing echo canceler state, %i bytes",(int)strlen(state_str));
1432                                 lp_config_set_string(call->core->config,"sound","ec_state",state_str);
1433                         }
1434                 }
1435                 linphone_call_log_fill_stats (call->log,call->audiostream);
1436                 if (call->endpoint){
1437                         linphone_call_remove_from_conf(call);
1438                 }
1439                 audio_stream_stop(call->audiostream);
1440                 call->audiostream=NULL;
1441         }
1442
1443
1444 #ifdef VIDEO_ENABLED
1445         if (call->videostream!=NULL){
1446                 rtp_session_unregister_event_queue(call->videostream->session,call->videostream_app_evq);
1447                 ortp_ev_queue_flush(call->videostream_app_evq);
1448                 ortp_ev_queue_destroy(call->videostream_app_evq);
1449                 video_stream_stop(call->videostream);
1450                 call->videostream=NULL;
1451         }
1452 #endif
1453         ms_event_queue_skip(call->core->msevq);
1454
1455         if (call->audio_profile){
1456                 rtp_profile_clear_all(call->audio_profile);
1457                 rtp_profile_destroy(call->audio_profile);
1458                 call->audio_profile=NULL;
1459         }
1460         if (call->video_profile){
1461                 rtp_profile_clear_all(call->video_profile);
1462                 rtp_profile_destroy(call->video_profile);
1463                 call->video_profile=NULL;
1464         }
1465 }
1466
1467
1468
1469 void linphone_call_enable_echo_cancellation(LinphoneCall *call, bool_t enable) {
1470         if (call!=NULL && call->audiostream!=NULL && call->audiostream->ec){
1471                 bool_t bypass_mode = !enable;
1472                 ms_filter_call_method(call->audiostream->ec,MS_ECHO_CANCELLER_SET_BYPASS_MODE,&bypass_mode);
1473         }
1474 }
1475 bool_t linphone_call_echo_cancellation_enabled(LinphoneCall *call) {
1476         if (call!=NULL && call->audiostream!=NULL && call->audiostream->ec){
1477                 bool_t val;
1478                 ms_filter_call_method(call->audiostream->ec,MS_ECHO_CANCELLER_GET_BYPASS_MODE,&val);
1479                 return !val;
1480         } else {
1481                 return linphone_core_echo_cancellation_enabled(call->core);
1482         }
1483 }
1484
1485 void linphone_call_enable_echo_limiter(LinphoneCall *call, bool_t val){
1486         if (call!=NULL && call->audiostream!=NULL ) {
1487                 if (val) {
1488                 const char *type=lp_config_get_string(call->core->config,"sound","el_type","mic");
1489                 if (strcasecmp(type,"mic")==0)
1490                         audio_stream_enable_echo_limiter(call->audiostream,ELControlMic);
1491                 else if (strcasecmp(type,"full")==0)
1492                         audio_stream_enable_echo_limiter(call->audiostream,ELControlFull);
1493                 } else {
1494                         audio_stream_enable_echo_limiter(call->audiostream,ELInactive);
1495                 }
1496         }
1497 }
1498
1499 bool_t linphone_call_echo_limiter_enabled(const LinphoneCall *call){
1500         if (call!=NULL && call->audiostream!=NULL ){
1501                 return call->audiostream->el_type !=ELInactive ;
1502         } else {
1503                 return linphone_core_echo_limiter_enabled(call->core);
1504         }
1505 }
1506
1507 /**
1508  * @addtogroup call_misc
1509  * @{
1510 **/
1511
1512 /**
1513  * Returns the measured sound volume played locally (received from remote).
1514  * It is expressed in dbm0.
1515 **/
1516 float linphone_call_get_play_volume(LinphoneCall *call){
1517         AudioStream *st=call->audiostream;
1518         if (st && st->volrecv){
1519                 float vol=0;
1520                 ms_filter_call_method(st->volrecv,MS_VOLUME_GET,&vol);
1521                 return vol;
1522
1523         }
1524         return LINPHONE_VOLUME_DB_LOWEST;
1525 }
1526
1527 /**
1528  * Returns the measured sound volume recorded locally (sent to remote).
1529  * It is expressed in dbm0.
1530 **/
1531 float linphone_call_get_record_volume(LinphoneCall *call){
1532         AudioStream *st=call->audiostream;
1533         if (st && st->volsend && !call->audio_muted && call->state==LinphoneCallStreamsRunning){
1534                 float vol=0;
1535                 ms_filter_call_method(st->volsend,MS_VOLUME_GET,&vol);
1536                 return vol;
1537
1538         }
1539         return LINPHONE_VOLUME_DB_LOWEST;
1540 }
1541
1542 /**
1543  * Obtain real-time quality rating of the call
1544  *
1545  * Based on local RTP statistics and RTCP feedback, a quality rating is computed and updated
1546  * during all the duration of the call. This function returns its value at the time of the function call.
1547  * It is expected that the rating is updated at least every 5 seconds or so.
1548  * The rating is a floating point number comprised between 0 and 5.
1549  *
1550  * 4-5 = good quality <br>
1551  * 3-4 = average quality <br>
1552  * 2-3 = poor quality <br>
1553  * 1-2 = very poor quality <br>
1554  * 0-1 = can't be worse, mostly unusable <br>
1555  *
1556  * @returns The function returns -1 if no quality measurement is available, for example if no
1557  * active audio stream exist. Otherwise it returns the quality rating.
1558 **/
1559 float linphone_call_get_current_quality(LinphoneCall *call){
1560         if (call->audiostream){
1561                 return audio_stream_get_quality_rating(call->audiostream);
1562         }
1563         return -1;
1564 }
1565
1566 /**
1567  * Returns call quality averaged over all the duration of the call.
1568  *
1569  * See linphone_call_get_current_quality() for more details about quality measurement.
1570 **/
1571 float linphone_call_get_average_quality(LinphoneCall *call){
1572         if (call->audiostream){
1573                 return audio_stream_get_average_quality_rating(call->audiostream);
1574         }
1575         return -1;
1576 }
1577
1578 /**
1579  * Access last known statistics for audio stream, for a given call.
1580 **/
1581 const LinphoneCallStats *linphone_call_get_audio_stats(const LinphoneCall *call) {
1582         return &call->stats[LINPHONE_CALL_STATS_AUDIO];
1583 }
1584
1585 /**
1586  * Access last known statistics for video stream, for a given call.
1587 **/
1588 const LinphoneCallStats *linphone_call_get_video_stats(const LinphoneCall *call) {
1589         return &call->stats[LINPHONE_CALL_STATS_VIDEO];
1590 }
1591
1592
1593 /**
1594  * @}
1595 **/
1596
1597 static void display_bandwidth(RtpSession *as, RtpSession *vs){
1598         ms_message("bandwidth usage: audio=[d=%.1f,u=%.1f] video=[d=%.1f,u=%.1f] kbit/sec",
1599         (as!=NULL) ? (rtp_session_compute_recv_bandwidth(as)*1e-3) : 0,
1600         (as!=NULL) ? (rtp_session_compute_send_bandwidth(as)*1e-3) : 0,
1601         (vs!=NULL) ? (rtp_session_compute_recv_bandwidth(vs)*1e-3) : 0,
1602         (vs!=NULL) ? (rtp_session_compute_send_bandwidth(vs)*1e-3) : 0);
1603 }
1604
1605 static void linphone_core_disconnected(LinphoneCore *lc, LinphoneCall *call){
1606         char temp[256];
1607         char *from=NULL;
1608         if(call)
1609                 from = linphone_call_get_remote_address_as_string(call);
1610         if (from)
1611         {
1612                 snprintf(temp,sizeof(temp),"Remote end %s seems to have disconnected, the call is going to be closed.",from);
1613                 free(from);
1614         }
1615         else
1616         {
1617                 snprintf(temp,sizeof(temp),"Remote end seems to have disconnected, the call is going to be closed.");
1618         }
1619         if (lc->vtable.display_warning!=NULL)
1620                 lc->vtable.display_warning(lc,temp);
1621         linphone_core_terminate_call(lc,call);
1622 }
1623
1624 void linphone_call_background_tasks(LinphoneCall *call, bool_t one_second_elapsed){
1625         LinphoneCore* lc = call->core;
1626         int disconnect_timeout = linphone_core_get_nortp_timeout(call->core);
1627         bool_t disconnected=FALSE;
1628
1629         if (call->state==LinphoneCallStreamsRunning && one_second_elapsed){
1630                 RtpSession *as=NULL,*vs=NULL;
1631                 float audio_load=0, video_load=0;
1632                 if (call->audiostream!=NULL){
1633                         as=call->audiostream->session;
1634                         if (call->audiostream->ticker)
1635                                 audio_load=ms_ticker_get_average_load(call->audiostream->ticker);
1636                 }
1637                 if (call->videostream!=NULL){
1638                         if (call->videostream->ticker)
1639                                 video_load=ms_ticker_get_average_load(call->videostream->ticker);
1640                         vs=call->videostream->session;
1641                 }
1642                 display_bandwidth(as,vs);
1643                 ms_message("Thread processing load: audio=%f\tvideo=%f",audio_load,video_load);
1644         }
1645 #ifdef VIDEO_ENABLED
1646         if (call->videostream!=NULL) {
1647                 // Beware that the application queue should not depend on treatments fron the
1648                 // mediastreamer queue.
1649                 video_stream_iterate(call->videostream);
1650
1651                 if (call->videostream_app_evq){
1652                         OrtpEvent *ev;
1653                         while (NULL != (ev=ortp_ev_queue_get(call->videostream_app_evq))){
1654                                 OrtpEventType evt=ortp_event_get_type(ev);
1655                                 OrtpEventData *evd=ortp_event_get_data(ev);
1656                                 if (evt == ORTP_EVENT_ZRTP_ENCRYPTION_CHANGED){
1657                                         linphone_call_videostream_encryption_changed(call, evd->info.zrtp_stream_encrypted);
1658                                 } else if (evt == ORTP_EVENT_RTCP_PACKET_RECEIVED) {
1659                                         call->stats[LINPHONE_CALL_STATS_VIDEO].round_trip_delay = rtp_session_get_round_trip_propagation(call->videostream->session);
1660                                         if(call->stats[LINPHONE_CALL_STATS_VIDEO].received_rtcp != NULL)
1661                                                 freemsg(call->stats[LINPHONE_CALL_STATS_VIDEO].received_rtcp);
1662                                         call->stats[LINPHONE_CALL_STATS_VIDEO].received_rtcp = evd->packet;
1663                                         evd->packet = NULL;
1664                                         if (lc->vtable.call_stats_updated)
1665                                                 lc->vtable.call_stats_updated(lc, call, &call->stats[LINPHONE_CALL_STATS_VIDEO]);
1666                                 } else if (evt == ORTP_EVENT_RTCP_PACKET_EMITTED) {
1667                                         memcpy(&call->stats[LINPHONE_CALL_STATS_VIDEO].jitter_stats, rtp_session_get_jitter_stats(call->videostream->session), sizeof(jitter_stats_t));
1668                                         if(call->stats[LINPHONE_CALL_STATS_VIDEO].sent_rtcp != NULL)
1669                                                 freemsg(call->stats[LINPHONE_CALL_STATS_VIDEO].sent_rtcp);
1670                                         call->stats[LINPHONE_CALL_STATS_VIDEO].sent_rtcp = evd->packet;
1671                                         evd->packet = NULL;
1672                                         if (lc->vtable.call_stats_updated)
1673                                                 lc->vtable.call_stats_updated(lc, call, &call->stats[LINPHONE_CALL_STATS_VIDEO]);
1674                                 }
1675                                 ortp_event_destroy(ev);
1676                         }
1677                 }
1678         }
1679 #endif
1680         if (call->audiostream!=NULL) {
1681                 // Beware that the application queue should not depend on treatments fron the
1682                 // mediastreamer queue.
1683                 audio_stream_iterate(call->audiostream);
1684
1685                 if (call->audiostream_app_evq){
1686                         OrtpEvent *ev;
1687                         while (NULL != (ev=ortp_ev_queue_get(call->audiostream_app_evq))){
1688                                 OrtpEventType evt=ortp_event_get_type(ev);
1689                                 OrtpEventData *evd=ortp_event_get_data(ev);
1690                                 if (evt == ORTP_EVENT_ZRTP_ENCRYPTION_CHANGED){
1691                                         linphone_call_audiostream_encryption_changed(call, evd->info.zrtp_stream_encrypted);
1692                                 } else if (evt == ORTP_EVENT_ZRTP_SAS_READY) {
1693                                         linphone_call_audiostream_auth_token_ready(call, evd->info.zrtp_sas.sas, evd->info.zrtp_sas.verified);
1694                                 } else if (evt == ORTP_EVENT_RTCP_PACKET_RECEIVED) {
1695                                         call->stats[LINPHONE_CALL_STATS_AUDIO].round_trip_delay = rtp_session_get_round_trip_propagation(call->audiostream->session);
1696                                         if(call->stats[LINPHONE_CALL_STATS_AUDIO].received_rtcp != NULL)
1697                                                 freemsg(call->stats[LINPHONE_CALL_STATS_AUDIO].received_rtcp);
1698                                         call->stats[LINPHONE_CALL_STATS_AUDIO].received_rtcp = evd->packet;
1699                                         evd->packet = NULL;
1700                                         if (lc->vtable.call_stats_updated)
1701                                                 lc->vtable.call_stats_updated(lc, call, &call->stats[LINPHONE_CALL_STATS_AUDIO]);
1702                                 } else if (evt == ORTP_EVENT_RTCP_PACKET_EMITTED) {
1703                                         memcpy(&call->stats[LINPHONE_CALL_STATS_AUDIO].jitter_stats, rtp_session_get_jitter_stats(call->audiostream->session), sizeof(jitter_stats_t));
1704                                         if(call->stats[LINPHONE_CALL_STATS_AUDIO].sent_rtcp != NULL)
1705                                                 freemsg(call->stats[LINPHONE_CALL_STATS_AUDIO].sent_rtcp);
1706                                         call->stats[LINPHONE_CALL_STATS_AUDIO].sent_rtcp = evd->packet;
1707                                         evd->packet = NULL;
1708                                         if (lc->vtable.call_stats_updated)
1709                                                 lc->vtable.call_stats_updated(lc, call, &call->stats[LINPHONE_CALL_STATS_AUDIO]);
1710                                 }
1711                                 ortp_event_destroy(ev);
1712                         }
1713                 }
1714         }
1715         if (call->state==LinphoneCallStreamsRunning && one_second_elapsed && call->audiostream!=NULL && disconnect_timeout>0 )
1716                 disconnected=!audio_stream_alive(call->audiostream,disconnect_timeout);
1717         if (disconnected)
1718                 linphone_core_disconnected(call->core,call);
1719 }
1720
1721 void linphone_call_log_completed(LinphoneCall *call){
1722         LinphoneCore *lc=call->core;
1723
1724         call->log->duration=time(NULL)-call->start_time;
1725
1726         if (call->log->status==LinphoneCallMissed){
1727                 char *info;
1728                 lc->missed_calls++;
1729                 info=ortp_strdup_printf(ngettext("You have missed %i call.",
1730                                          "You have missed %i calls.", lc->missed_calls),
1731                                 lc->missed_calls);
1732         if (lc->vtable.display_status!=NULL)
1733             lc->vtable.display_status(lc,info);
1734                 ms_free(info);
1735         }
1736         lc->call_logs=ms_list_prepend(lc->call_logs,(void *)call->log);
1737         if (ms_list_size(lc->call_logs)>lc->max_call_logs){
1738                 MSList *elem,*prevelem=NULL;
1739                 /*find the last element*/
1740                 for(elem=lc->call_logs;elem!=NULL;elem=elem->next){
1741                         prevelem=elem;
1742                 }
1743                 elem=prevelem;
1744                 linphone_call_log_destroy((LinphoneCallLog*)elem->data);
1745                 lc->call_logs=ms_list_remove_link(lc->call_logs,elem);
1746         }
1747         if (lc->vtable.call_log_updated!=NULL){
1748                 lc->vtable.call_log_updated(lc,call->log);
1749         }
1750         call_logs_write_to_config_file(lc);
1751 }
1752
1753 LinphoneCallState linphone_call_get_transfer_state(LinphoneCall *call) {
1754         return call->transfer_state;
1755 }
1756
1757 void linphone_call_set_transfer_state(LinphoneCall* call, LinphoneCallState state) {
1758         if (state != call->transfer_state) {
1759                 LinphoneCore* lc = call->core;
1760                 call->transfer_state = state;
1761                 if (lc->vtable.transfer_state_changed)
1762                         lc->vtable.transfer_state_changed(lc, call, state);
1763         }
1764 }
1765