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                                 break;
 496                                 case LinphoneReasonNotAnswered:
 497                                         call->log->status=LinphoneCallMissed;
 498                                 break;
 499                                 default:
 500                                 break;
 501                         }
 502                         linphone_call_set_terminated (call);
 503                 }
 504                 if (cstate == LinphoneCallConnected) {
 505                         call->log->status=LinphoneCallSuccess;
 506                         call->media_start_time=time(NULL);
 507                 }
 508
 509                 if (lc->vtable.call_state_changed)
 510                         lc->vtable.call_state_changed(lc,call,cstate,message);
 511                 if (cstate==LinphoneCallReleased){
 512                         if (call->op!=NULL) {
 513                                 /* so that we cannot have anymore upcalls for SAL
 514                                  concerning this call*/
 515                                 sal_op_release(call->op);
 516                                 call->op=NULL;
 517                         }
 518                         linphone_call_unref(call);
 519                 }
 520         }
 521 }
 522
 523 static void linphone_call_destroy(LinphoneCall *obj)
 524 {
 525         if (obj->op!=NULL) {
 526                 sal_op_release(obj->op);
 527                 obj->op=NULL;
 528         }
 529         if (obj->resultdesc!=NULL) {
 530                 sal_media_description_unref(obj->resultdesc);
 531                 obj->resultdesc=NULL;
 532         }
 533         if (obj->localdesc!=NULL) {
 534                 sal_media_description_unref(obj->localdesc);
 535                 obj->localdesc=NULL;
 536         }
 537         if (obj->ping_op) {
 538                 sal_op_release(obj->ping_op);
 539         }
 540         if (obj->refer_to){
 541                 ms_free(obj->refer_to);
 542         }
 543         if (obj->owns_call_log)
 544                 linphone_call_log_destroy(obj->log);
 545         if (obj->auth_token) {
 546                 ms_free(obj->auth_token);
 547         }
 548
 549         ms_free(obj);
 550 }
 551
 552 /**
 553  * @addtogroup call_control
 554  * @{
 555 **/
 556
 557 /**
 558  * Increments the call 's reference count.
 559  * An application that wishes to retain a pointer to call object
 560  * must use this function to unsure the pointer remains
 561  * valid. Once the application no more needs this pointer,
 562  * it must call linphone_call_unref().
 563 **/
 564 LinphoneCall * linphone_call_ref(LinphoneCall *obj){
 565         obj->refcnt++;
 566         return obj;
 567 }
 568
 569 /**
 570  * Decrements the call object reference count.
 571  * See linphone_call_ref().
 572 **/
 573 void linphone_call_unref(LinphoneCall *obj){
 574         obj->refcnt--;
 575         if (obj->refcnt==0){
 576                 linphone_call_destroy(obj);
 577         }
 578 }
 579
 580 /**
 581  * Returns current parameters associated to the call.
 582 **/
 583 const LinphoneCallParams * linphone_call_get_current_params(const LinphoneCall *call){
 584         return &call->current_params;
 585 }
 586
 587 static bool_t is_video_active(const SalStreamDescription *sd){
 588         return sd->port!=0 && sd->dir!=SalStreamInactive;
 589 }
 590
 591 /**
 592  * Returns call parameters proposed by remote.
 593  *
 594  * This is useful when receiving an incoming call, to know whether the remote party
 595  * supports video, encryption or whatever.
 596 **/
 597 const LinphoneCallParams * linphone_call_get_remote_params(LinphoneCall *call){
 598         LinphoneCallParams *cp=&call->remote_params;
 599         memset(cp,0,sizeof(*cp));
 600         if (call->op){
 601                 SalMediaDescription *md=sal_call_get_remote_media_description(call->op);
 602                 if (md){
 603                         SalStreamDescription *asd,*vsd,*secure_asd,*secure_vsd;
 604
 605                         asd=sal_media_description_find_stream(md,SalProtoRtpAvp,SalAudio);
 606                         vsd=sal_media_description_find_stream(md,SalProtoRtpAvp,SalVideo);
 607                         secure_asd=sal_media_description_find_stream(md,SalProtoRtpSavp,SalAudio);
 608                         secure_vsd=sal_media_description_find_stream(md,SalProtoRtpSavp,SalVideo);
 609                         if (secure_vsd){
 610                                 cp->has_video=is_video_active(secure_vsd);
 611                                 if (secure_asd || asd==NULL)
 612                                         cp->media_encryption=LinphoneMediaEncryptionSRTP;
 613                         }else if (vsd){
 614                                 cp->has_video=is_video_active(vsd);
 615                         }
 616                         return cp;
 617                 }
 618         }
 619         return NULL;
 620 }
 621
 622 /**
 623  * Returns the remote address associated to this call
 624  *
 625 **/
 626 const LinphoneAddress * linphone_call_get_remote_address(const LinphoneCall *call){
 627         return call->dir==LinphoneCallIncoming ? call->log->from : call->log->to;
 628 }
 629
 630 /**
 631  * Returns the remote address associated to this call as a string.
 632  *
 633  * The result string must be freed by user using ms_free().
 634 **/
 635 char *linphone_call_get_remote_address_as_string(const LinphoneCall *call){
 636         return linphone_address_as_string(linphone_call_get_remote_address(call));
 637 }
 638
 639 /**
 640  * Retrieves the call's current state.
 641 **/
 642 LinphoneCallState linphone_call_get_state(const LinphoneCall *call){
 643         return call->state;
 644 }
 645
 646 /**
 647  * Returns the reason for a call termination (either error or normal termination)
 648 **/
 649 LinphoneReason linphone_call_get_reason(const LinphoneCall *call){
 650         return call->reason;
 651 }
 652
 653 /**
 654  * Get the user_pointer in the LinphoneCall
 655  *
 656  * @ingroup call_control
 657  *
 658  * return user_pointer an opaque user pointer that can be retrieved at any time
 659 **/
 660 void *linphone_call_get_user_pointer(LinphoneCall *call)
 661 {
 662         return call->user_pointer;
 663 }
 664
 665 /**
 666  * Set the user_pointer in the LinphoneCall
 667  *
 668  * @ingroup call_control
 669  *
 670  * the user_pointer is an opaque user pointer that can be retrieved at any time in the LinphoneCall
 671 **/
 672 void linphone_call_set_user_pointer(LinphoneCall *call, void *user_pointer)
 673 {
 674         call->user_pointer = user_pointer;
 675 }
 676
 677 /**
 678  * Returns the call log associated to this call.
 679 **/
 680 LinphoneCallLog *linphone_call_get_call_log(const LinphoneCall *call){
 681         return call->log;
 682 }
 683
 684 /**
 685  * Returns the refer-to uri (if the call was transfered).
 686 **/
 687 const char *linphone_call_get_refer_to(const LinphoneCall *call){
 688         return call->refer_to;
 689 }
 690
 691 /**
 692  * Returns direction of the call (incoming or outgoing).
 693 **/
 694 LinphoneCallDir linphone_call_get_dir(const LinphoneCall *call){
 695         return call->log->dir;
 696 }
 697
 698 /**
 699  * Returns the far end's user agent description string, if available.
 700 **/
 701 const char *linphone_call_get_remote_user_agent(LinphoneCall *call){
 702         if (call->op){
 703                 return sal_op_get_remote_ua (call->op);
 704         }
 705         return NULL;
 706 }
 707
 708 /**
 709  * Returns true if this calls has received a transfer that has not been
 710  * executed yet.
 711  * Pending transfers are executed when this call is being paused or closed,
 712  * locally or by remote endpoint.
 713  * If the call is already paused while receiving the transfer request, the
 714  * transfer immediately occurs.
 715 **/
 716 bool_t linphone_call_has_transfer_pending(const LinphoneCall *call){
 717         return call->refer_pending;
 718 }
 719
 720 /**
 721  * Returns call's duration in seconds.
 722 **/
 723 int linphone_call_get_duration(const LinphoneCall *call){
 724         if (call->media_start_time==0) return 0;
 725         return time(NULL)-call->media_start_time;
 726 }
 727
 728 /**
 729  * Returns the call object this call is replacing, if any.
 730  * Call replacement can occur during call transfers.
 731  * By default, the core automatically terminates the replaced call and accept the new one.
 732  * This function allows the application to know whether a new incoming call is a one that replaces another one.
 733 **/
 734 LinphoneCall *linphone_call_get_replaced_call(LinphoneCall *call){
 735         SalOp *op=sal_call_get_replaces(call->op);
 736         if (op){
 737                 return (LinphoneCall*)sal_op_get_user_pointer(op);
 738         }
 739         return NULL;
 740 }
 741
 742 /**
 743  * Indicate whether camera input should be sent to remote end.
 744 **/
 745 void linphone_call_enable_camera (LinphoneCall *call, bool_t enable){
 746 #ifdef VIDEO_ENABLED
 747         if (call->videostream!=NULL && call->videostream->ticker!=NULL){
 748                 LinphoneCore *lc=call->core;
 749                 MSWebCam *nowebcam=get_nowebcam_device();
 750                 if (call->camera_active!=enable && lc->video_conf.device!=nowebcam){
 751                         video_stream_change_camera(call->videostream,
 752                                      enable ? lc->video_conf.device : nowebcam);
 753                 }
 754         }
 755         call->camera_active=enable;
 756 #endif
 757 }
 758
 759 /**
 760  * Take a photo of currently received video and write it into a jpeg file.
 761 **/
 762 int linphone_call_take_video_snapshot(LinphoneCall *call, const char *file){
 763 #ifdef VIDEO_ENABLED
 764         if (call->videostream!=NULL && call->videostream->jpegwriter!=NULL){
 765                 return ms_filter_call_method(call->videostream->jpegwriter,MS_JPEG_WRITER_TAKE_SNAPSHOT,(void*)file);
 766         }
 767         ms_warning("Cannot take snapshot: no currently running video stream on this call.");
 768         return -1;
 769 #endif
 770         return -1;
 771 }
 772
 773 /**
 774  * Returns TRUE if camera pictures are sent to the remote party.
 775 **/
 776 bool_t linphone_call_camera_enabled (const LinphoneCall *call){
 777         return call->camera_active;
 778 }
 779
 780 /**
 781  * Enable video stream.
 782 **/
 783 void linphone_call_params_enable_video(LinphoneCallParams *cp, bool_t enabled){
 784         cp->has_video=enabled;
 785 }
 786
 787 const PayloadType* linphone_call_params_get_used_audio_codec(const LinphoneCallParams *cp) {
 788         return cp->audio_codec;
 789 }
 790
 791 const PayloadType* linphone_call_params_get_used_video_codec(const LinphoneCallParams *cp) {
 792         return cp->video_codec;
 793 }
 794
 795 /**
 796  * Returns whether video is enabled.
 797 **/
 798 bool_t linphone_call_params_video_enabled(const LinphoneCallParams *cp){
 799         return cp->has_video;
 800 }
 801
 802 enum LinphoneMediaEncryption linphone_call_params_get_media_encryption(const LinphoneCallParams *cp) {
 803         return cp->media_encryption;
 804 }
 805
 806 void linphone_call_params_set_media_encryption(LinphoneCallParams *cp, enum LinphoneMediaEncryption e) {
 807         cp->media_encryption = e;
 808 }
 809
 810
 811 /**
 812  * Enable sending of real early media (during outgoing calls).
 813 **/
 814 void linphone_call_params_enable_early_media_sending(LinphoneCallParams *cp, bool_t enabled){
 815         cp->real_early_media=enabled;
 816 }
 817
 818 bool_t linphone_call_params_early_media_sending_enabled(const LinphoneCallParams *cp){
 819         return cp->real_early_media;
 820 }
 821
 822 /**
 823  * Returns true if the call is part of the locally managed conference.
 824 **/
 825 bool_t linphone_call_params_local_conference_mode(const LinphoneCallParams *cp){
 826         return cp->in_conference;
 827 }
 828
 829 /**
 830  * Refine bandwidth settings for this call by setting a bandwidth limit for audio streams.
 831  * As a consequence, codecs whose bitrates are not compatible with this limit won't be used.
 832 **/
 833 void linphone_call_params_set_audio_bandwidth_limit(LinphoneCallParams *cp, int bandwidth){
 834         cp->audio_bw=bandwidth;
 835 }
 836
 837 #ifdef VIDEO_ENABLED
 838 /**
 839  * Request remote side to send us a Video Fast Update.
 840 **/
 841 void linphone_call_send_vfu_request(LinphoneCall *call)
 842 {
 843         if (LinphoneCallStreamsRunning == linphone_call_get_state(call))
 844                 sal_call_send_vfu_request(call->op);
 845 }
 846 #endif
 847
 848 /**
 849  *
 850 **/
 851 LinphoneCallParams * linphone_call_params_copy(const LinphoneCallParams *cp){
 852         LinphoneCallParams *ncp=ms_new0(LinphoneCallParams,1);
 853         memcpy(ncp,cp,sizeof(LinphoneCallParams));
 854         return ncp;
 855 }
 856
 857 /**
 858  *
 859 **/
 860 void linphone_call_params_destroy(LinphoneCallParams *p){
 861         ms_free(p);
 862 }
 863
 864 /**
 865  * @}
 866 **/
 867
 868
 869 #ifdef TEST_EXT_RENDERER
 870 static void rendercb(void *data, const MSPicture *local, const MSPicture *remote){
 871         ms_message("rendercb, local buffer=%p, remote buffer=%p",
 872                    local ? local->planes[0] : NULL, remote? remote->planes[0] : NULL);
 873 }
 874 #endif
 875
 876 #ifdef VIDEO_ENABLED
 877 static void video_stream_event_cb(void *user_pointer, const MSFilter *f, const unsigned int event_id, const void *args){
 878     LinphoneCall* call = (LinphoneCall*) user_pointer;
 879         ms_warning("In linphonecall.c: video_stream_event_cb");
 880         switch (event_id) {
 881                 case MS_VIDEO_DECODER_DECODING_ERRORS:
 882                         ms_warning("Case is MS_VIDEO_DECODER_DECODING_ERRORS");
 883                         linphone_call_send_vfu_request(call);
 884                         break;
 885         case MS_VIDEO_DECODER_FIRST_IMAGE_DECODED:
 886             ms_message("First video frame decoded successfully");
 887             if (call->nextVideoFrameDecoded._func != NULL)
 888                 call->nextVideoFrameDecoded._func(call, call->nextVideoFrameDecoded._user_data);
 889             break;
 890                 default:
 891                         ms_warning("Unhandled event %i", event_id);
 892                         break;
 893         }
 894 }
 895 #endif
 896
 897 void linphone_call_set_next_video_frame_decoded_callback(LinphoneCall *call, LinphoneCallCbFunc cb, void* user_data) {
 898     call->nextVideoFrameDecoded._func = cb;
 899     call->nextVideoFrameDecoded._user_data = user_data;
 900 #ifdef VIDEO_ENABLED
 901     ms_filter_call_method_noarg(call->videostream->decoder, MS_VIDEO_DECODER_RESET_FIRST_IMAGE_NOTIFICATION);
 902 #endif
 903 }
 904
 905 void linphone_call_init_media_streams(LinphoneCall *call){
 906         LinphoneCore *lc=call->core;
 907         SalMediaDescription *md=call->localdesc;
 908         AudioStream *audiostream;
 909
 910         call->audiostream=audiostream=audio_stream_new(md->streams[0].port,linphone_core_ipv6_enabled(lc));
 911         if (linphone_core_echo_limiter_enabled(lc)){
 912                 const char *type=lp_config_get_string(lc->config,"sound","el_type","mic");
 913                 if (strcasecmp(type,"mic")==0)
 914                         audio_stream_enable_echo_limiter(audiostream,ELControlMic);
 915                 else if (strcasecmp(type,"full")==0)
 916                         audio_stream_enable_echo_limiter(audiostream,ELControlFull);
 917         }
 918         audio_stream_enable_gain_control(audiostream,TRUE);
 919         if (linphone_core_echo_cancellation_enabled(lc)){
 920                 int len,delay,framesize;
 921                 const char *statestr=lp_config_get_string(lc->config,"sound","ec_state",NULL);
 922                 len=lp_config_get_int(lc->config,"sound","ec_tail_len",0);
 923                 delay=lp_config_get_int(lc->config,"sound","ec_delay",0);
 924                 framesize=lp_config_get_int(lc->config,"sound","ec_framesize",0);
 925                 audio_stream_set_echo_canceller_params(audiostream,len,delay,framesize);
 926                 if (statestr && audiostream->ec){
 927                         ms_filter_call_method(audiostream->ec,MS_ECHO_CANCELLER_SET_STATE_STRING,(void*)statestr);
 928                 }
 929         }
 930         audio_stream_enable_automatic_gain_control(audiostream,linphone_core_agc_enabled(lc));
 931         {
 932                 int enabled=lp_config_get_int(lc->config,"sound","noisegate",0);
 933                 audio_stream_enable_noise_gate(audiostream,enabled);
 934         }
 935
 936         audio_stream_set_features(audiostream,linphone_core_get_audio_features(lc));
 937
 938         if (lc->rtptf){
 939                 RtpTransport *artp=lc->rtptf->audio_rtp_func(lc->rtptf->audio_rtp_func_data, call->audio_port);
 940                 RtpTransport *artcp=lc->rtptf->audio_rtcp_func(lc->rtptf->audio_rtcp_func_data, call->audio_port+1);
 941                 rtp_session_set_transports(audiostream->session,artp,artcp);
 942         }
 943
 944         call->audiostream_app_evq = ortp_ev_queue_new();
 945         rtp_session_register_event_queue(audiostream->session,call->audiostream_app_evq);
 946
 947 #ifdef VIDEO_ENABLED
 948
 949         if ((lc->video_conf.display || lc->video_conf.capture) && md->streams[1].port>0){
 950                 int video_recv_buf_size=lp_config_get_int(lc->config,"video","recv_buf_size",0);
 951                 call->videostream=video_stream_new(md->streams[1].port,linphone_core_ipv6_enabled(lc));
 952                 video_stream_enable_display_filter_auto_rotate(call->videostream, lp_config_get_int(lc->config,"video","display_filter_auto_rotate",0));
 953                 if (video_recv_buf_size>0) rtp_session_set_recv_buf_size(call->videostream->session,video_recv_buf_size);
 954
 955                 if( lc->video_conf.displaytype != NULL)
 956                         video_stream_set_display_filter_name(call->videostream,lc->video_conf.displaytype);
 957                 video_stream_set_event_callback(call->videostream,video_stream_event_cb, call);
 958                 if (lc->rtptf){
 959                         RtpTransport *vrtp=lc->rtptf->video_rtp_func(lc->rtptf->video_rtp_func_data, call->video_port);
 960                         RtpTransport *vrtcp=lc->rtptf->video_rtcp_func(lc->rtptf->video_rtcp_func_data, call->video_port+1);
 961                         rtp_session_set_transports(call->videostream->session,vrtp,vrtcp);
 962                 }
 963                 call->videostream_app_evq = ortp_ev_queue_new();
 964                 rtp_session_register_event_queue(call->videostream->session,call->videostream_app_evq);
 965 #ifdef TEST_EXT_RENDERER
 966                 video_stream_set_render_callback(call->videostream,rendercb,NULL);
 967 #endif
 968         }
 969 #else
 970         call->videostream=NULL;
 971 #endif
 972 }
 973
 974
 975 static int dtmf_tab[16]={'0','1','2','3','4','5','6','7','8','9','*','#','A','B','C','D'};
 976
 977 static void linphone_core_dtmf_received(RtpSession* s, int dtmf, void* user_data){
 978         LinphoneCore* lc = (LinphoneCore*)user_data;
 979         if (dtmf<0 || dtmf>15){
 980                 ms_warning("Bad dtmf value %i",dtmf);
 981                 return;
 982         }
 983         if (lc->vtable.dtmf_received != NULL)
 984                 lc->vtable.dtmf_received(lc, linphone_core_get_current_call(lc), dtmf_tab[dtmf]);
 985 }
 986
 987 static void parametrize_equalizer(LinphoneCore *lc, AudioStream *st){
 988         if (st->equalizer){
 989                 MSFilter *f=st->equalizer;
 990                 int enabled=lp_config_get_int(lc->config,"sound","eq_active",0);
 991                 const char *gains=lp_config_get_string(lc->config,"sound","eq_gains",NULL);
 992                 ms_filter_call_method(f,MS_EQUALIZER_SET_ACTIVE,&enabled);
 993                 if (enabled){
 994                         if (gains){
 995                                 do{
 996                                         int bytes;
 997                                         MSEqualizerGain g;
 998                                         if (sscanf(gains,"%f:%f:%f %n",&g.frequency,&g.gain,&g.width,&bytes)==3){
 999                                                 ms_message("Read equalizer gains: %f(~%f) --> %f",g.frequency,g.width,g.gain);
1000                                                 ms_filter_call_method(f,MS_EQUALIZER_SET_GAIN,&g);
1001                                                 gains+=bytes;
1002                                         }else break;
1003                                 }while(1);
1004                         }
1005                 }
1006         }
1007 }
1008
1009 void _post_configure_audio_stream(AudioStream *st, LinphoneCore *lc, bool_t muted){
1010         float mic_gain=lp_config_get_float(lc->config,"sound","mic_gain",1);
1011         float thres = 0;
1012         float recv_gain;
1013         float ng_thres=lp_config_get_float(lc->config,"sound","ng_thres",0.05);
1014         float ng_floorgain=lp_config_get_float(lc->config,"sound","ng_floorgain",0);
1015         int dc_removal=lp_config_get_int(lc->config,"sound","dc_removal",0);
1016
1017         if (!muted)
1018                 audio_stream_set_mic_gain(st,mic_gain);
1019         else
1020                 audio_stream_set_mic_gain(st,0);
1021
1022         recv_gain = lc->sound_conf.soft_play_lev;
1023         if (recv_gain != 0) {
1024                 linphone_core_set_playback_gain_db (lc,recv_gain);
1025         }
1026
1027         if (st->volsend){
1028                 ms_filter_call_method(st->volsend,MS_VOLUME_REMOVE_DC,&dc_removal);
1029                 float speed=lp_config_get_float(lc->config,"sound","el_speed",-1);
1030                 thres=lp_config_get_float(lc->config,"sound","el_thres",-1);
1031                 float force=lp_config_get_float(lc->config,"sound","el_force",-1);
1032                 int sustain=lp_config_get_int(lc->config,"sound","el_sustain",-1);
1033                 float transmit_thres=lp_config_get_float(lc->config,"sound","el_transmit_thres",-1);
1034                 MSFilter *f=NULL;
1035                 f=st->volsend;
1036                 if (speed==-1) speed=0.03;
1037                 if (force==-1) force=25;
1038                 ms_filter_call_method(f,MS_VOLUME_SET_EA_SPEED,&speed);
1039                 ms_filter_call_method(f,MS_VOLUME_SET_EA_FORCE,&force);
1040                 if (thres!=-1)
1041                         ms_filter_call_method(f,MS_VOLUME_SET_EA_THRESHOLD,&thres);
1042                 if (sustain!=-1)
1043                         ms_filter_call_method(f,MS_VOLUME_SET_EA_SUSTAIN,&sustain);
1044                 if (transmit_thres!=-1)
1045                                 ms_filter_call_method(f,MS_VOLUME_SET_EA_TRANSMIT_THRESHOLD,&transmit_thres);
1046
1047                 ms_filter_call_method(st->volsend,MS_VOLUME_SET_NOISE_GATE_THRESHOLD,&ng_thres);
1048                 ms_filter_call_method(st->volsend,MS_VOLUME_SET_NOISE_GATE_FLOORGAIN,&ng_floorgain);
1049         }
1050         if (st->volrecv){
1051                 /* parameters for a limited noise-gate effect, using echo limiter threshold */
1052                 float floorgain = 1/mic_gain;
1053                 int spk_agc=lp_config_get_int(lc->config,"sound","speaker_agc_enabled",0);
1054                 ms_filter_call_method(st->volrecv, MS_VOLUME_ENABLE_AGC, &spk_agc);
1055                 ms_filter_call_method(st->volrecv,MS_VOLUME_SET_NOISE_GATE_THRESHOLD,&ng_thres);
1056                 ms_filter_call_method(st->volrecv,MS_VOLUME_SET_NOISE_GATE_FLOORGAIN,&floorgain);
1057         }
1058         parametrize_equalizer(lc,st);
1059 }
1060
1061 static void post_configure_audio_streams(LinphoneCall*call){
1062         AudioStream *st=call->audiostream;
1063         LinphoneCore *lc=call->core;
1064         _post_configure_audio_stream(st,lc,call->audio_muted);
1065         if (lc->vtable.dtmf_received!=NULL){
1066                 /* replace by our default action*/
1067                 audio_stream_play_received_dtmfs(call->audiostream,FALSE);
1068                 rtp_session_signal_connect(call->audiostream->session,"telephone-event",(RtpCallback)linphone_core_dtmf_received,(unsigned long)lc);
1069         }
1070 }
1071
1072 static RtpProfile *make_profile(LinphoneCall *call, const SalMediaDescription *md, const SalStreamDescription *desc, int *used_pt){
1073         int bw;
1074         const MSList *elem;
1075         RtpProfile *prof=rtp_profile_new("Call profile");
1076         bool_t first=TRUE;
1077         int remote_bw=0;
1078         LinphoneCore *lc=call->core;
1079         int up_ptime=0;
1080         *used_pt=-1;
1081
1082         for(elem=desc->payloads;elem!=NULL;elem=elem->next){
1083                 PayloadType *pt=(PayloadType*)elem->data;
1084                 int number;
1085
1086                 if ((pt->flags & PAYLOAD_TYPE_FLAG_CAN_SEND) && first) {
1087                         if (desc->type==SalAudio){
1088                                 linphone_core_update_allocated_audio_bandwidth_in_call(call,pt);
1089                                 up_ptime=linphone_core_get_upload_ptime(lc);
1090                         }
1091                         *used_pt=payload_type_get_number(pt);
1092                         first=FALSE;
1093                 }
1094                 if (desc->bandwidth>0) remote_bw=desc->bandwidth;
1095                 else if (md->bandwidth>0) {
1096                         /*case where b=AS is given globally, not per stream*/
1097                         remote_bw=md->bandwidth;
1098                         if (desc->type==SalVideo){
1099                                 remote_bw=get_video_bandwidth(remote_bw,call->audio_bw);
1100                         }
1101                 }
1102
1103                 if (desc->type==SalAudio){
1104                                 bw=get_min_bandwidth(call->audio_bw,remote_bw);
1105                 }else bw=get_min_bandwidth(get_video_bandwidth(linphone_core_get_upload_bandwidth (lc),call->audio_bw),remote_bw);
1106                 if (bw>0) pt->normal_bitrate=bw*1000;
1107                 else if (desc->type==SalAudio){
1108                         pt->normal_bitrate=-1;
1109                 }
1110                 if (desc->ptime>0){
1111                         up_ptime=desc->ptime;
1112                 }
1113                 if (up_ptime>0){
1114                         char tmp[40];
1115                         snprintf(tmp,sizeof(tmp),"ptime=%i",up_ptime);
1116                         payload_type_append_send_fmtp(pt,tmp);
1117                 }
1118                 number=payload_type_get_number(pt);
1119                 if (rtp_profile_get_payload(prof,number)!=NULL){
1120                         ms_warning("A payload type with number %i already exists in profile !",number);
1121                 }else
1122                         rtp_profile_set_payload(prof,number,pt);
1123         }
1124         return prof;
1125 }
1126
1127
1128 static void setup_ring_player(LinphoneCore *lc, LinphoneCall *call){
1129         int pause_time=3000;
1130         audio_stream_play(call->audiostream,lc->sound_conf.ringback_tone);
1131         ms_filter_call_method(call->audiostream->soundread,MS_FILE_PLAYER_LOOP,&pause_time);
1132 }
1133
1134 #define LINPHONE_RTCP_SDES_TOOL "Linphone-" LINPHONE_VERSION
1135
1136 static bool_t linphone_call_sound_resources_available(LinphoneCall *call){
1137         LinphoneCore *lc=call->core;
1138         LinphoneCall *current=linphone_core_get_current_call(lc);
1139         return !linphone_core_is_in_conference(lc) &&
1140                 (current==NULL || current==call);
1141 }
1142 static int find_crypto_index_from_tag(const SalSrtpCryptoAlgo crypto[],unsigned char tag) {
1143     int i;
1144     for(i=0; i<SAL_CRYPTO_ALGO_MAX; i++) {
1145         if (crypto[i].tag == tag) {
1146             return i;
1147         }
1148     }
1149     return -1;
1150 }
1151 static void linphone_call_start_audio_stream(LinphoneCall *call, const char *cname, bool_t muted, bool_t send_ringbacktone, bool_t use_arc){
1152         LinphoneCore *lc=call->core;
1153         int jitt_comp=lc->rtp_conf.audio_jitt_comp;
1154         int used_pt=-1;
1155         /* look for savp stream first */
1156         const SalStreamDescription *stream=sal_media_description_find_stream(call->resultdesc,
1157                                                 SalProtoRtpSavp,SalAudio);
1158         /* no savp audio stream, use avp */
1159         if (!stream)
1160                 stream=sal_media_description_find_stream(call->resultdesc,
1161                                                 SalProtoRtpAvp,SalAudio);
1162
1163         if (stream && stream->dir!=SalStreamInactive && stream->port!=0){
1164                 MSSndCard *playcard=lc->sound_conf.lsd_card ?
1165                         lc->sound_conf.lsd_card : lc->sound_conf.play_sndcard;
1166                 MSSndCard *captcard=lc->sound_conf.capt_sndcard;
1167                 const char *playfile=lc->play_file;
1168                 const char *recfile=lc->rec_file;
1169                 call->audio_profile=make_profile(call,call->resultdesc,stream,&used_pt);
1170                 bool_t use_ec;
1171
1172                 if (used_pt!=-1){
1173                         call->current_params.audio_codec = rtp_profile_get_payload(call->audio_profile, used_pt);
1174                         if (playcard==NULL) {
1175                                 ms_warning("No card defined for playback !");
1176                         }
1177                         if (captcard==NULL) {
1178                                 ms_warning("No card defined for capture !");
1179                         }
1180                         /*Replace soundcard filters by inactive file players or recorders
1181                          when placed in recvonly or sendonly mode*/
1182                         if (stream->port==0 || stream->dir==SalStreamRecvOnly){
1183                                 captcard=NULL;
1184                                 playfile=NULL;
1185                         }else if (stream->dir==SalStreamSendOnly){
1186                                 playcard=NULL;
1187                                 captcard=NULL;
1188                                 recfile=NULL;
1189                                 /*And we will eventually play "playfile" if set by the user*/
1190                                 /*playfile=NULL;*/
1191                         }
1192                         if (send_ringbacktone){
1193                                 captcard=NULL;
1194                                 playfile=NULL;/* it is setup later*/
1195                         }
1196                         /*if playfile are supplied don't use soundcards*/
1197                         if (lc->use_files) {
1198                                 captcard=NULL;
1199                                 playcard=NULL;
1200                         }
1201                         if (call->params.in_conference){
1202                                 /* first create the graph without soundcard resources*/
1203                                 captcard=playcard=NULL;
1204                         }
1205                         if (!linphone_call_sound_resources_available(call)){
1206                                 ms_message("Sound resources are used by another call, not using soundcard.");
1207                                 captcard=playcard=NULL;
1208                         }
1209                         use_ec=captcard==NULL ? FALSE : linphone_core_echo_cancellation_enabled(lc);
1210                         if (playcard &&  stream->max_rate>0) ms_snd_card_set_preferred_sample_rate(playcard, stream->max_rate);
1211                         if (captcard &&  stream->max_rate>0) ms_snd_card_set_preferred_sample_rate(captcard, stream->max_rate);
1212                         audio_stream_enable_adaptive_bitrate_control(call->audiostream,use_arc);
1213                         audio_stream_start_full(
1214                                 call->audiostream,
1215                                 call->audio_profile,
1216                                 stream->addr[0]!='\0' ? stream->addr : call->resultdesc->addr,
1217                                 stream->port,
1218                                 linphone_core_rtcp_enabled(lc) ? (stream->port+1) : 0,
1219                                 used_pt,
1220                                 jitt_comp,
1221                                 playfile,
1222                                 recfile,
1223                                 playcard,
1224                                 captcard,
1225                                 use_ec
1226                                 );
1227                         post_configure_audio_streams(call);
1228                         if (muted && !send_ringbacktone){
1229                                 audio_stream_set_mic_gain(call->audiostream,0);
1230                         }
1231                         if (stream->dir==SalStreamSendOnly && playfile!=NULL){
1232                                 int pause_time=500;
1233                                 ms_filter_call_method(call->audiostream->soundread,MS_FILE_PLAYER_LOOP,&pause_time);
1234                         }
1235                         if (send_ringbacktone){
1236                                 setup_ring_player(lc,call);
1237                         }
1238                         audio_stream_set_rtcp_information(call->audiostream, cname, LINPHONE_RTCP_SDES_TOOL);
1239
1240             /* valid local tags are > 0 */
1241                         if (stream->proto == SalProtoRtpSavp) {
1242                 const SalStreamDescription *local_st_desc=sal_media_description_find_stream(call->localdesc,
1243                                                                                             SalProtoRtpSavp,SalAudio);
1244                 int crypto_idx = find_crypto_index_from_tag(local_st_desc->crypto, stream->crypto_local_tag);
1245
1246                 if (crypto_idx >= 0) {
1247                     audio_stream_enable_strp(
1248                                              call->audiostream,
1249                                              stream->crypto[0].algo,
1250                                              local_st_desc->crypto[crypto_idx].master_key,
1251                                              stream->crypto[0].master_key);
1252                     call->audiostream_encrypted=TRUE;
1253                 } else {
1254                     ms_warning("Failed to find local crypto algo with tag: %d", stream->crypto_local_tag);
1255                     call->audiostream_encrypted=FALSE;
1256                 }
1257                         }else call->audiostream_encrypted=FALSE;
1258                         if (call->params.in_conference){
1259                                 /*transform the graph to connect it to the conference filter */
1260                                 bool_t mute=stream->dir==SalStreamRecvOnly;
1261                                 linphone_call_add_to_conf(call, mute);
1262                         }
1263                         call->current_params.in_conference=call->params.in_conference;
1264                 }else ms_warning("No audio stream accepted ?");
1265         }
1266 }
1267
1268 static void linphone_call_start_video_stream(LinphoneCall *call, const char *cname,bool_t all_inputs_muted){
1269 #ifdef VIDEO_ENABLED
1270         LinphoneCore *lc=call->core;
1271         int used_pt=-1;
1272         /* look for savp stream first */
1273         const SalStreamDescription *vstream=sal_media_description_find_stream(call->resultdesc,
1274                                                 SalProtoRtpSavp,SalVideo);
1275         /* no savp audio stream, use avp */
1276         if (!vstream)
1277                 vstream=sal_media_description_find_stream(call->resultdesc,
1278                                                 SalProtoRtpAvp,SalVideo);
1279
1280         /* shutdown preview */
1281         if (lc->previewstream!=NULL) {
1282                 video_preview_stop(lc->previewstream);
1283                 lc->previewstream=NULL;
1284         }
1285
1286         if (vstream!=NULL && vstream->dir!=SalStreamInactive && vstream->port!=0) {
1287                 const char *addr=vstream->addr[0]!='\0' ? vstream->addr : call->resultdesc->addr;
1288                 call->video_profile=make_profile(call,call->resultdesc,vstream,&used_pt);
1289                 if (used_pt!=-1){
1290                         call->current_params.video_codec = rtp_profile_get_payload(call->video_profile, used_pt);
1291                         VideoStreamDir dir=VideoStreamSendRecv;
1292                         MSWebCam *cam=lc->video_conf.device;
1293                         bool_t is_inactive=FALSE;
1294
1295                         call->current_params.has_video=TRUE;
1296
1297                         video_stream_enable_adaptive_bitrate_control(call->videostream,
1298                                                                   linphone_core_adaptive_rate_control_enabled(lc));
1299                         video_stream_set_sent_video_size(call->videostream,linphone_core_get_preferred_video_size(lc));
1300                         video_stream_enable_self_view(call->videostream,lc->video_conf.selfview);
1301                         if (lc->video_window_id!=0)
1302                                 video_stream_set_native_window_id(call->videostream,lc->video_window_id);
1303                         if (lc->preview_window_id!=0)
1304                                 video_stream_set_native_preview_window_id (call->videostream,lc->preview_window_id);
1305                         video_stream_use_preview_video_window (call->videostream,lc->use_preview_window);
1306
1307                         if (vstream->dir==SalStreamSendOnly && lc->video_conf.capture ){
1308                                 cam=get_nowebcam_device();
1309                                 dir=VideoStreamSendOnly;
1310                         }else if (vstream->dir==SalStreamRecvOnly && lc->video_conf.display ){
1311                                 dir=VideoStreamRecvOnly;
1312                         }else if (vstream->dir==SalStreamSendRecv){
1313                                 if (lc->video_conf.display && lc->video_conf.capture)
1314                                         dir=VideoStreamSendRecv;
1315                                 else if (lc->video_conf.display)
1316                                         dir=VideoStreamRecvOnly;
1317                                 else
1318                                         dir=VideoStreamSendOnly;
1319                         }else{
1320                                 ms_warning("video stream is inactive.");
1321                                 /*either inactive or incompatible with local capabilities*/
1322                                 is_inactive=TRUE;
1323                         }
1324                         if (call->camera_active==FALSE || all_inputs_muted){
1325                                 cam=get_nowebcam_device();
1326                         }
1327                         if (!is_inactive){
1328                 call->log->video_enabled = TRUE;
1329                                 video_stream_set_direction (call->videostream, dir);
1330                                 ms_message("%s lc rotation:%d\n", __FUNCTION__, lc->device_rotation);
1331                                 video_stream_set_device_rotation(call->videostream, lc->device_rotation);
1332                                 video_stream_start(call->videostream,
1333                                         call->video_profile, addr, vstream->port,
1334                                         linphone_core_rtcp_enabled(lc) ? (vstream->port+1) : 0,
1335                                         used_pt, lc->rtp_conf.audio_jitt_comp, cam);
1336                                 video_stream_set_rtcp_information(call->videostream, cname,LINPHONE_RTCP_SDES_TOOL);
1337                         }
1338
1339                         if (vstream->proto == SalProtoRtpSavp) {
1340                                 const SalStreamDescription *local_st_desc=sal_media_description_find_stream(call->localdesc,
1341                                                 SalProtoRtpSavp,SalVideo);
1342
1343                                 video_stream_enable_strp(
1344                                         call->videostream,
1345                                         vstream->crypto[0].algo,
1346                                         local_st_desc->crypto[0].master_key,
1347                                         vstream->crypto[0].master_key
1348                                         );
1349                                 call->videostream_encrypted=TRUE;
1350                         }else{
1351                                 call->videostream_encrypted=FALSE;
1352                         }
1353                 }else ms_warning("No video stream accepted.");
1354         }else{
1355                 ms_warning("No valid video stream defined.");
1356         }
1357 #endif
1358 }
1359
1360 void linphone_call_start_media_streams(LinphoneCall *call, bool_t all_inputs_muted, bool_t send_ringbacktone){
1361         LinphoneCore *lc=call->core;
1362
1363         call->current_params.audio_codec = NULL;
1364         call->current_params.video_codec = NULL;
1365
1366         LinphoneAddress *me=linphone_core_get_primary_contact_parsed(lc);
1367         char *cname;
1368         bool_t use_arc=linphone_core_adaptive_rate_control_enabled(lc);
1369 #ifdef VIDEO_ENABLED
1370         const SalStreamDescription *vstream=sal_media_description_find_stream(call->resultdesc,
1371                                                         SalProtoRtpAvp,SalVideo);
1372 #endif
1373
1374         if(call->audiostream == NULL)
1375         {
1376                 ms_fatal("start_media_stream() called without prior init !");
1377                 return;
1378         }
1379         cname=linphone_address_as_string_uri_only(me);
1380
1381 #if defined(VIDEO_ENABLED)
1382         if (vstream!=NULL && vstream->dir!=SalStreamInactive && vstream->payloads!=NULL){
1383                 /*when video is used, do not make adaptive rate control on audio, it is stupid.*/
1384                 use_arc=FALSE;
1385         }
1386 #endif
1387         linphone_call_start_audio_stream(call,cname,all_inputs_muted,send_ringbacktone,use_arc);
1388         call->current_params.has_video=FALSE;
1389         if (call->videostream!=NULL) {
1390                 linphone_call_start_video_stream(call,cname,all_inputs_muted);
1391         }
1392
1393         call->all_muted=all_inputs_muted;
1394         call->playing_ringbacktone=send_ringbacktone;
1395         call->up_bw=linphone_core_get_upload_bandwidth(lc);
1396
1397         if (call->params.media_encryption==LinphoneMediaEncryptionZRTP) {
1398                 OrtpZrtpParams params;
1399                 /*will be set later when zrtp is activated*/
1400                 call->current_params.media_encryption=LinphoneMediaEncryptionNone;
1401
1402                 params.zid_file=lc->zrtp_secrets_cache;
1403                 audio_stream_enable_zrtp(call->audiostream,&params);
1404         }else if (call->params.media_encryption==LinphoneMediaEncryptionSRTP){
1405                 call->current_params.media_encryption=linphone_call_are_all_streams_encrypted(call) ?
1406                         LinphoneMediaEncryptionSRTP : LinphoneMediaEncryptionNone;
1407         }
1408
1409         /*also reflect the change if the "wished" params, in order to avoid to propose SAVP or video again
1410          * further in the call, for example during pause,resume, conferencing reINVITEs*/
1411         linphone_call_fix_call_parameters(call);
1412
1413         goto end;
1414         end:
1415                 ms_free(cname);
1416                 linphone_address_destroy(me);
1417 }
1418
1419 static void linphone_call_log_fill_stats(LinphoneCallLog *log, AudioStream *st){
1420         audio_stream_get_local_rtp_stats (st,&log->local_stats);
1421         log->quality=audio_stream_get_average_quality_rating(st);
1422 }
1423
1424 void linphone_call_stop_media_streams(LinphoneCall *call){
1425         if (call->audiostream!=NULL) {
1426                 rtp_session_unregister_event_queue(call->audiostream->session,call->audiostream_app_evq);
1427                 ortp_ev_queue_flush(call->audiostream_app_evq);
1428                 ortp_ev_queue_destroy(call->audiostream_app_evq);
1429
1430                 if (call->audiostream->ec){
1431                         const char *state_str=NULL;
1432                         ms_filter_call_method(call->audiostream->ec,MS_ECHO_CANCELLER_GET_STATE_STRING,&state_str);
1433                         if (state_str){
1434                                 ms_message("Writing echo canceler state, %i bytes",(int)strlen(state_str));
1435                                 lp_config_set_string(call->core->config,"sound","ec_state",state_str);
1436                         }
1437                 }
1438                 linphone_call_log_fill_stats (call->log,call->audiostream);
1439                 if (call->endpoint){
1440                         linphone_call_remove_from_conf(call);
1441                 }
1442                 audio_stream_stop(call->audiostream);
1443                 call->audiostream=NULL;
1444         }
1445
1446
1447 #ifdef VIDEO_ENABLED
1448         if (call->videostream!=NULL){
1449                 rtp_session_unregister_event_queue(call->videostream->session,call->videostream_app_evq);
1450                 ortp_ev_queue_flush(call->videostream_app_evq);
1451                 ortp_ev_queue_destroy(call->videostream_app_evq);
1452                 video_stream_stop(call->videostream);
1453                 call->videostream=NULL;
1454         }
1455 #endif
1456         ms_event_queue_skip(call->core->msevq);
1457
1458         if (call->audio_profile){
1459                 rtp_profile_clear_all(call->audio_profile);
1460                 rtp_profile_destroy(call->audio_profile);
1461                 call->audio_profile=NULL;
1462         }
1463         if (call->video_profile){
1464                 rtp_profile_clear_all(call->video_profile);
1465                 rtp_profile_destroy(call->video_profile);
1466                 call->video_profile=NULL;
1467         }
1468 }
1469
1470
1471
1472 void linphone_call_enable_echo_cancellation(LinphoneCall *call, bool_t enable) {
1473         if (call!=NULL && call->audiostream!=NULL && call->audiostream->ec){
1474                 bool_t bypass_mode = !enable;
1475                 ms_filter_call_method(call->audiostream->ec,MS_ECHO_CANCELLER_SET_BYPASS_MODE,&bypass_mode);
1476         }
1477 }
1478 bool_t linphone_call_echo_cancellation_enabled(LinphoneCall *call) {
1479         if (call!=NULL && call->audiostream!=NULL && call->audiostream->ec){
1480                 bool_t val;
1481                 ms_filter_call_method(call->audiostream->ec,MS_ECHO_CANCELLER_GET_BYPASS_MODE,&val);
1482                 return !val;
1483         } else {
1484                 return linphone_core_echo_cancellation_enabled(call->core);
1485         }
1486 }
1487
1488 void linphone_call_enable_echo_limiter(LinphoneCall *call, bool_t val){
1489         if (call!=NULL && call->audiostream!=NULL ) {
1490                 if (val) {
1491                 const char *type=lp_config_get_string(call->core->config,"sound","el_type","mic");
1492                 if (strcasecmp(type,"mic")==0)
1493                         audio_stream_enable_echo_limiter(call->audiostream,ELControlMic);
1494                 else if (strcasecmp(type,"full")==0)
1495                         audio_stream_enable_echo_limiter(call->audiostream,ELControlFull);
1496                 } else {
1497                         audio_stream_enable_echo_limiter(call->audiostream,ELInactive);
1498                 }
1499         }
1500 }
1501
1502 bool_t linphone_call_echo_limiter_enabled(const LinphoneCall *call){
1503         if (call!=NULL && call->audiostream!=NULL ){
1504                 return call->audiostream->el_type !=ELInactive ;
1505         } else {
1506                 return linphone_core_echo_limiter_enabled(call->core);
1507         }
1508 }
1509
1510 /**
1511  * @addtogroup call_misc
1512  * @{
1513 **/
1514
1515 /**
1516  * Returns the measured sound volume played locally (received from remote).
1517  * It is expressed in dbm0.
1518 **/
1519 float linphone_call_get_play_volume(LinphoneCall *call){
1520         AudioStream *st=call->audiostream;
1521         if (st && st->volrecv){
1522                 float vol=0;
1523                 ms_filter_call_method(st->volrecv,MS_VOLUME_GET,&vol);
1524                 return vol;
1525
1526         }
1527         return LINPHONE_VOLUME_DB_LOWEST;
1528 }
1529
1530 /**
1531  * Returns the measured sound volume recorded locally (sent to remote).
1532  * It is expressed in dbm0.
1533 **/
1534 float linphone_call_get_record_volume(LinphoneCall *call){
1535         AudioStream *st=call->audiostream;
1536         if (st && st->volsend && !call->audio_muted && call->state==LinphoneCallStreamsRunning){
1537                 float vol=0;
1538                 ms_filter_call_method(st->volsend,MS_VOLUME_GET,&vol);
1539                 return vol;
1540
1541         }
1542         return LINPHONE_VOLUME_DB_LOWEST;
1543 }
1544
1545 /**
1546  * Obtain real-time quality rating of the call
1547  *
1548  * Based on local RTP statistics and RTCP feedback, a quality rating is computed and updated
1549  * during all the duration of the call. This function returns its value at the time of the function call.
1550  * It is expected that the rating is updated at least every 5 seconds or so.
1551  * The rating is a floating point number comprised between 0 and 5.
1552  *
1553  * 4-5 = good quality <br>
1554  * 3-4 = average quality <br>
1555  * 2-3 = poor quality <br>
1556  * 1-2 = very poor quality <br>
1557  * 0-1 = can't be worse, mostly unusable <br>
1558  *
1559  * @returns The function returns -1 if no quality measurement is available, for example if no
1560  * active audio stream exist. Otherwise it returns the quality rating.
1561 **/
1562 float linphone_call_get_current_quality(LinphoneCall *call){
1563         if (call->audiostream){
1564                 return audio_stream_get_quality_rating(call->audiostream);
1565         }
1566         return -1;
1567 }
1568
1569 /**
1570  * Returns call quality averaged over all the duration of the call.
1571  *
1572  * See linphone_call_get_current_quality() for more details about quality measurement.
1573 **/
1574 float linphone_call_get_average_quality(LinphoneCall *call){
1575         if (call->audiostream){
1576                 return audio_stream_get_average_quality_rating(call->audiostream);
1577         }
1578         return -1;
1579 }
1580
1581 /**
1582  * Access last known statistics for audio stream, for a given call.
1583 **/
1584 const LinphoneCallStats *linphone_call_get_audio_stats(const LinphoneCall *call) {
1585         return &call->stats[LINPHONE_CALL_STATS_AUDIO];
1586 }
1587
1588 /**
1589  * Access last known statistics for video stream, for a given call.
1590 **/
1591 const LinphoneCallStats *linphone_call_get_video_stats(const LinphoneCall *call) {
1592         return &call->stats[LINPHONE_CALL_STATS_VIDEO];
1593 }
1594
1595
1596 /**
1597  * @}
1598 **/
1599
1600 static void display_bandwidth(RtpSession *as, RtpSession *vs){
1601         ms_message("bandwidth usage: audio=[d=%.1f,u=%.1f] video=[d=%.1f,u=%.1f] kbit/sec",
1602         (as!=NULL) ? (rtp_session_compute_recv_bandwidth(as)*1e-3) : 0,
1603         (as!=NULL) ? (rtp_session_compute_send_bandwidth(as)*1e-3) : 0,
1604         (vs!=NULL) ? (rtp_session_compute_recv_bandwidth(vs)*1e-3) : 0,
1605         (vs!=NULL) ? (rtp_session_compute_send_bandwidth(vs)*1e-3) : 0);
1606 }
1607
1608 static void linphone_core_disconnected(LinphoneCore *lc, LinphoneCall *call){
1609         char temp[256];
1610         char *from=NULL;
1611         if(call)
1612                 from = linphone_call_get_remote_address_as_string(call);
1613         if (from)
1614         {
1615                 snprintf(temp,sizeof(temp),"Remote end %s seems to have disconnected, the call is going to be closed.",from);
1616                 free(from);
1617         }
1618         else
1619         {
1620                 snprintf(temp,sizeof(temp),"Remote end seems to have disconnected, the call is going to be closed.");
1621         }
1622         if (lc->vtable.display_warning!=NULL)
1623                 lc->vtable.display_warning(lc,temp);
1624         linphone_core_terminate_call(lc,call);
1625 }
1626
1627 void linphone_call_background_tasks(LinphoneCall *call, bool_t one_second_elapsed){
1628         LinphoneCore* lc = call->core;
1629         int disconnect_timeout = linphone_core_get_nortp_timeout(call->core);
1630         bool_t disconnected=FALSE;
1631
1632         if (call->state==LinphoneCallStreamsRunning && one_second_elapsed){
1633                 RtpSession *as=NULL,*vs=NULL;
1634                 float audio_load=0, video_load=0;
1635                 if (call->audiostream!=NULL){
1636                         as=call->audiostream->session;
1637                         if (call->audiostream->ticker)
1638                                 audio_load=ms_ticker_get_average_load(call->audiostream->ticker);
1639                 }
1640                 if (call->videostream!=NULL){
1641                         if (call->videostream->ticker)
1642                                 video_load=ms_ticker_get_average_load(call->videostream->ticker);
1643                         vs=call->videostream->session;
1644                 }
1645                 display_bandwidth(as,vs);
1646                 ms_message("Thread processing load: audio=%f\tvideo=%f",audio_load,video_load);
1647         }
1648 #ifdef VIDEO_ENABLED
1649         if (call->videostream!=NULL) {
1650                 // Beware that the application queue should not depend on treatments fron the
1651                 // mediastreamer queue.
1652                 video_stream_iterate(call->videostream);
1653
1654                 if (call->videostream_app_evq){
1655                         OrtpEvent *ev;
1656                         while (NULL != (ev=ortp_ev_queue_get(call->videostream_app_evq))){
1657                                 OrtpEventType evt=ortp_event_get_type(ev);
1658                                 OrtpEventData *evd=ortp_event_get_data(ev);
1659                                 if (evt == ORTP_EVENT_ZRTP_ENCRYPTION_CHANGED){
1660                                         linphone_call_videostream_encryption_changed(call, evd->info.zrtp_stream_encrypted);
1661                                 } else if (evt == ORTP_EVENT_RTCP_PACKET_RECEIVED) {
1662                                         call->stats[LINPHONE_CALL_STATS_VIDEO].round_trip_delay = rtp_session_get_round_trip_propagation(call->videostream->session);
1663                                         if(call->stats[LINPHONE_CALL_STATS_VIDEO].received_rtcp != NULL)
1664                                                 freemsg(call->stats[LINPHONE_CALL_STATS_VIDEO].received_rtcp);
1665                                         call->stats[LINPHONE_CALL_STATS_VIDEO].received_rtcp = evd->packet;
1666                                         evd->packet = NULL;
1667                                         if (lc->vtable.call_stats_updated)
1668                                                 lc->vtable.call_stats_updated(lc, call, &call->stats[LINPHONE_CALL_STATS_VIDEO]);
1669                                 } else if (evt == ORTP_EVENT_RTCP_PACKET_EMITTED) {
1670                                         memcpy(&call->stats[LINPHONE_CALL_STATS_VIDEO].jitter_stats, rtp_session_get_jitter_stats(call->videostream->session), sizeof(jitter_stats_t));
1671                                         if(call->stats[LINPHONE_CALL_STATS_VIDEO].sent_rtcp != NULL)
1672                                                 freemsg(call->stats[LINPHONE_CALL_STATS_VIDEO].sent_rtcp);
1673                                         call->stats[LINPHONE_CALL_STATS_VIDEO].sent_rtcp = evd->packet;
1674                                         evd->packet = NULL;
1675                                         if (lc->vtable.call_stats_updated)
1676                                                 lc->vtable.call_stats_updated(lc, call, &call->stats[LINPHONE_CALL_STATS_VIDEO]);
1677                                 }
1678                                 ortp_event_destroy(ev);
1679                         }
1680                 }
1681         }
1682 #endif
1683         if (call->audiostream!=NULL) {
1684                 // Beware that the application queue should not depend on treatments fron the
1685                 // mediastreamer queue.
1686                 audio_stream_iterate(call->audiostream);
1687
1688                 if (call->audiostream_app_evq){
1689                         OrtpEvent *ev;
1690                         while (NULL != (ev=ortp_ev_queue_get(call->audiostream_app_evq))){
1691                                 OrtpEventType evt=ortp_event_get_type(ev);
1692                                 OrtpEventData *evd=ortp_event_get_data(ev);
1693                                 if (evt == ORTP_EVENT_ZRTP_ENCRYPTION_CHANGED){
1694                                         linphone_call_audiostream_encryption_changed(call, evd->info.zrtp_stream_encrypted);
1695                                 } else if (evt == ORTP_EVENT_ZRTP_SAS_READY) {
1696                                         linphone_call_audiostream_auth_token_ready(call, evd->info.zrtp_sas.sas, evd->info.zrtp_sas.verified);
1697                                 } else if (evt == ORTP_EVENT_RTCP_PACKET_RECEIVED) {
1698                                         call->stats[LINPHONE_CALL_STATS_AUDIO].round_trip_delay = rtp_session_get_round_trip_propagation(call->audiostream->session);
1699                                         if(call->stats[LINPHONE_CALL_STATS_AUDIO].received_rtcp != NULL)
1700                                                 freemsg(call->stats[LINPHONE_CALL_STATS_AUDIO].received_rtcp);
1701                                         call->stats[LINPHONE_CALL_STATS_AUDIO].received_rtcp = evd->packet;
1702                                         evd->packet = NULL;
1703                                         if (lc->vtable.call_stats_updated)
1704                                                 lc->vtable.call_stats_updated(lc, call, &call->stats[LINPHONE_CALL_STATS_AUDIO]);
1705                                 } else if (evt == ORTP_EVENT_RTCP_PACKET_EMITTED) {
1706                                         memcpy(&call->stats[LINPHONE_CALL_STATS_AUDIO].jitter_stats, rtp_session_get_jitter_stats(call->audiostream->session), sizeof(jitter_stats_t));
1707                                         if(call->stats[LINPHONE_CALL_STATS_AUDIO].sent_rtcp != NULL)
1708                                                 freemsg(call->stats[LINPHONE_CALL_STATS_AUDIO].sent_rtcp);
1709                                         call->stats[LINPHONE_CALL_STATS_AUDIO].sent_rtcp = evd->packet;
1710                                         evd->packet = NULL;
1711                                         if (lc->vtable.call_stats_updated)
1712                                                 lc->vtable.call_stats_updated(lc, call, &call->stats[LINPHONE_CALL_STATS_AUDIO]);
1713                                 }
1714                                 ortp_event_destroy(ev);
1715                         }
1716                 }
1717         }
1718         if (call->state==LinphoneCallStreamsRunning && one_second_elapsed && call->audiostream!=NULL && disconnect_timeout>0 )
1719                 disconnected=!audio_stream_alive(call->audiostream,disconnect_timeout);
1720         if (disconnected)
1721                 linphone_core_disconnected(call->core,call);
1722 }
1723
1724 void linphone_call_log_completed(LinphoneCall *call){
1725         LinphoneCore *lc=call->core;
1726
1727         call->log->duration=time(NULL)-call->start_time;
1728
1729         if (call->log->status==LinphoneCallMissed){
1730                 char *info;
1731                 lc->missed_calls++;
1732                 info=ortp_strdup_printf(ngettext("You have missed %i call.",
1733                                          "You have missed %i calls.", lc->missed_calls),
1734                                 lc->missed_calls);
1735         if (lc->vtable.display_status!=NULL)
1736             lc->vtable.display_status(lc,info);
1737                 ms_free(info);
1738         }
1739         lc->call_logs=ms_list_prepend(lc->call_logs,(void *)call->log);
1740         if (ms_list_size(lc->call_logs)>lc->max_call_logs){
1741                 MSList *elem,*prevelem=NULL;
1742                 /*find the last element*/
1743                 for(elem=lc->call_logs;elem!=NULL;elem=elem->next){
1744                         prevelem=elem;
1745                 }
1746                 elem=prevelem;
1747                 linphone_call_log_destroy((LinphoneCallLog*)elem->data);
1748                 lc->call_logs=ms_list_remove_link(lc->call_logs,elem);
1749         }
1750         if (lc->vtable.call_log_updated!=NULL){
1751                 lc->vtable.call_log_updated(lc,call->log);
1752         }
1753         call_logs_write_to_config_file(lc);
1754 }
1755
1756 LinphoneCallState linphone_call_get_transfer_state(LinphoneCall *call) {
1757         return call->transfer_state;
1758 }
1759
1760 void linphone_call_set_transfer_state(LinphoneCall* call, LinphoneCallState state) {
1761         if (state != call->transfer_state) {
1762                 LinphoneCore* lc = call->core;
1763                 call->transfer_state = state;
1764                 if (lc->vtable.transfer_state_changed)
1765                         lc->vtable.transfer_state_changed(lc, call, state);
1766         }
1767 }
1768