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