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                 if (linphone_core_get_firewall_policy(call->core) == LinphonePolicyUseIce){
 249                         md->streams[i].ice_check_list = ice_check_list_new();
 250                         ice_session_add_check_list(call->ice_session, md->streams[i].ice_check_list);
 251                 }
 252         }
 253
 254         linphone_address_destroy(addr);
 255         return md;
 256 }
 257
 258 void update_local_media_description(LinphoneCore *lc, LinphoneCall *call){
 259         SalMediaDescription *md=call->localdesc;
 260         if (md== NULL) {
 261                 call->localdesc = create_local_media_description(lc,call);
 262         } else {
 263                 call->localdesc = _create_local_media_description(lc,call,md->session_id,md->session_ver+1);
 264                 sal_media_description_unref(md);
 265         }
 266 }
 267
 268 SalMediaDescription *create_local_media_description(LinphoneCore *lc, LinphoneCall *call){
 269         unsigned int id=rand() & 0xfff;
 270         return _create_local_media_description(lc,call,id,id);
 271 }
 272
 273 static int find_port_offset(LinphoneCore *lc){
 274         int offset;
 275         MSList *elem;
 276         int audio_port;
 277         bool_t already_used=FALSE;
 278         for(offset=0;offset<100;offset+=2){
 279                 audio_port=linphone_core_get_audio_port (lc)+offset;
 280                 already_used=FALSE;
 281                 for(elem=lc->calls;elem!=NULL;elem=elem->next){
 282                         LinphoneCall *call=(LinphoneCall*)elem->data;
 283                         if (call->audio_port==audio_port) {
 284                                 already_used=TRUE;
 285                                 break;
 286                         }
 287                 }
 288                 if (!already_used) break;
 289         }
 290         if (offset==100){
 291                 ms_error("Could not find any free port !");
 292                 return -1;
 293         }
 294         return offset;
 295 }
 296
 297 static void linphone_call_init_common(LinphoneCall *call, LinphoneAddress *from, LinphoneAddress *to){
 298         int port_offset;
 299         call->magic=linphone_call_magic;
 300         call->refcnt=1;
 301         call->state=LinphoneCallIdle;
 302         call->transfer_state = LinphoneCallIdle;
 303         call->start_time=time(NULL);
 304         call->media_start_time=0;
 305         call->log=linphone_call_log_new(call, from, to);
 306         call->owns_call_log=TRUE;
 307         linphone_core_notify_all_friends(call->core,LinphoneStatusOnThePhone);
 308         port_offset=find_port_offset (call->core);
 309         if (port_offset==-1) return;
 310         call->audio_port=linphone_core_get_audio_port(call->core)+port_offset;
 311         call->video_port=linphone_core_get_video_port(call->core)+port_offset;
 312         linphone_call_init_stats(&call->stats[LINPHONE_CALL_STATS_AUDIO], LINPHONE_CALL_STATS_AUDIO);
 313         linphone_call_init_stats(&call->stats[LINPHONE_CALL_STATS_VIDEO], LINPHONE_CALL_STATS_VIDEO);
 314 }
 315
 316 void linphone_call_init_stats(LinphoneCallStats *stats, int type) {
 317         stats->type = type;
 318         stats->received_rtcp = NULL;
 319         stats->sent_rtcp = NULL;
 320 }
 321
 322 static void discover_mtu(LinphoneCore *lc, const char *remote){
 323         int mtu;
 324         if (lc->net_conf.mtu==0 ){
 325                 /*attempt to discover mtu*/
 326                 mtu=ms_discover_mtu(remote);
 327                 if (mtu>0){
 328                         ms_set_mtu(mtu);
 329                         ms_message("Discovered mtu is %i, RTP payload max size is %i",
 330                                 mtu, ms_get_payload_max_size());
 331                 }
 332         }
 333 }
 334
 335 LinphoneCall * linphone_call_new_outgoing(struct _LinphoneCore *lc, LinphoneAddress *from, LinphoneAddress *to, const LinphoneCallParams *params)
 336 {
 337         LinphoneCall *call=ms_new0(LinphoneCall,1);
 338         call->dir=LinphoneCallOutgoing;
 339         call->op=sal_op_new(lc->sal);
 340         sal_op_set_user_pointer(call->op,call);
 341         call->core=lc;
 342         linphone_core_get_local_ip(lc,linphone_address_get_domain(to),call->localip);
 343         linphone_call_init_common(call,from,to);
 344         call->params=*params;
 345         if (linphone_core_get_firewall_policy(call->core) == LinphonePolicyUseIce) call->ice_session=ice_session_new();
 346         call->localdesc=create_local_media_description (lc,call);
 347         call->camera_active=params->has_video;
 348         switch (linphone_core_get_firewall_policy(call->core)) {
 349                 case LinphonePolicyUseStun:
 350                         linphone_core_run_stun_tests(call->core,call);
 351                         break;
 352                 case LinphonePolicyUseIce:
 353                         ms_error("Gather ICE candidates");
 354                         break;
 355                 default:
 356                         break;
 357         }
 358         discover_mtu(lc,linphone_address_get_domain (to));
 359         if (params->referer){
 360                 sal_call_set_referer(call->op,params->referer->op);
 361                 call->referer=linphone_call_ref(params->referer);
 362         }
 363         return call;
 364 }
 365
 366 LinphoneCall * linphone_call_new_incoming(LinphoneCore *lc, LinphoneAddress *from, LinphoneAddress *to, SalOp *op){
 367         LinphoneCall *call=ms_new0(LinphoneCall,1);
 368         char *from_str;
 369
 370         call->dir=LinphoneCallIncoming;
 371         sal_op_set_user_pointer(op,call);
 372         call->op=op;
 373         call->core=lc;
 374
 375         if (lc->sip_conf.ping_with_options){
 376                 /*the following sends an option request back to the caller so that
 377                  we get a chance to discover our nat'd address before answering.*/
 378                 call->ping_op=sal_op_new(lc->sal);
 379                 from_str=linphone_address_as_string_uri_only(from);
 380                 sal_op_set_route(call->ping_op,sal_op_get_network_origin(op));
 381                 sal_op_set_user_pointer(call->ping_op,call);
 382                 sal_ping(call->ping_op,linphone_core_find_best_identity(lc,from,NULL),from_str);
 383                 ms_free(from_str);
 384         }
 385
 386         linphone_address_clean(from);
 387         linphone_core_get_local_ip(lc,linphone_address_get_domain(from),call->localip);
 388         linphone_call_init_common(call, from, to);
 389         linphone_core_init_default_params(lc, &call->params);
 390         call->params.has_video &= !!lc->video_policy.automatically_accept;
 391         call->localdesc=create_local_media_description (lc,call);
 392         call->camera_active=call->params.has_video;
 393         if (linphone_core_get_firewall_policy(call->core)==LinphonePolicyUseStun)
 394                 linphone_core_run_stun_tests(call->core,call);
 395         discover_mtu(lc,linphone_address_get_domain(from));
 396         return call;
 397 }
 398
 399 /* this function is called internally to get rid of a call.
 400  It performs the following tasks:
 401  - remove the call from the internal list of calls
 402  - update the call logs accordingly
 403 */
 404
 405 static void linphone_call_set_terminated(LinphoneCall *call){
 406         LinphoneCore *lc=call->core;
 407
 408         linphone_core_update_allocated_audio_bandwidth(lc);
 409
 410         call->owns_call_log=FALSE;
 411         linphone_call_log_completed(call);
 412
 413
 414         if (call == lc->current_call){
 415                 ms_message("Resetting the current call");
 416                 lc->current_call=NULL;
 417         }
 418
 419         if (linphone_core_del_call(lc,call) != 0){
 420                 ms_error("Could not remove the call from the list !!!");
 421         }
 422
 423         if (ms_list_size(lc->calls)==0)
 424                 linphone_core_notify_all_friends(lc,lc->presence_mode);
 425
 426         linphone_core_conference_check_uninit(lc);
 427         if (call->ringing_beep){
 428                 linphone_core_stop_dtmf(lc);
 429                 call->ringing_beep=FALSE;
 430         }
 431         if (call->referer){
 432                 linphone_call_unref(call->referer);
 433                 call->referer=NULL;
 434         }
 435 }
 436
 437 void linphone_call_fix_call_parameters(LinphoneCall *call){
 438         call->params.has_video=call->current_params.has_video;
 439         call->params.media_encryption=call->current_params.media_encryption;
 440 }
 441
 442 const char *linphone_call_state_to_string(LinphoneCallState cs){
 443         switch (cs){
 444                 case LinphoneCallIdle:
 445                         return "LinphoneCallIdle";
 446                 case LinphoneCallIncomingReceived:
 447                         return "LinphoneCallIncomingReceived";
 448                 case LinphoneCallOutgoingInit:
 449                         return "LinphoneCallOutgoingInit";
 450                 case LinphoneCallOutgoingProgress:
 451                         return "LinphoneCallOutgoingProgress";
 452                 case LinphoneCallOutgoingRinging:
 453                         return "LinphoneCallOutgoingRinging";
 454                 case LinphoneCallOutgoingEarlyMedia:
 455                         return "LinphoneCallOutgoingEarlyMedia";
 456                 case LinphoneCallConnected:
 457                         return "LinphoneCallConnected";
 458                 case LinphoneCallStreamsRunning:
 459                         return "LinphoneCallStreamsRunning";
 460                 case LinphoneCallPausing:
 461                         return "LinphoneCallPausing";
 462                 case LinphoneCallPaused:
 463                         return "LinphoneCallPaused";
 464                 case LinphoneCallResuming:
 465                         return "LinphoneCallResuming";
 466                 case LinphoneCallRefered:
 467                         return "LinphoneCallRefered";
 468                 case LinphoneCallError:
 469                         return "LinphoneCallError";
 470                 case LinphoneCallEnd:
 471                         return "LinphoneCallEnd";
 472                 case LinphoneCallPausedByRemote:
 473                         return "LinphoneCallPausedByRemote";
 474                 case LinphoneCallUpdatedByRemote:
 475                         return "LinphoneCallUpdatedByRemote";
 476                 case LinphoneCallIncomingEarlyMedia:
 477                         return "LinphoneCallIncomingEarlyMedia";
 478                 case LinphoneCallUpdated:
 479                         return "LinphoneCallUpdated";
 480                 case LinphoneCallReleased:
 481                         return "LinphoneCallReleased";
 482         }
 483         return "undefined state";
 484 }
 485
 486 void linphone_call_set_state(LinphoneCall *call, LinphoneCallState cstate, const char *message){
 487         LinphoneCore *lc=call->core;
 488
 489         if (call->state!=cstate){
 490                 if (call->state==LinphoneCallEnd || call->state==LinphoneCallError){
 491                         if (cstate!=LinphoneCallReleased){
 492                                 ms_warning("Spurious call state change from %s to %s, ignored.",linphone_call_state_to_string(call->state),
 493                                    linphone_call_state_to_string(cstate));
 494                                 return;
 495                         }
 496                 }
 497                 ms_message("Call %p: moving from state %s to %s",call,linphone_call_state_to_string(call->state),
 498                            linphone_call_state_to_string(cstate));
 499                 if (cstate!=LinphoneCallRefered){
 500                         /*LinphoneCallRefered is rather an event, not a state.
 501                          Indeed it does not change the state of the call (still paused or running)*/
 502                         call->state=cstate;
 503                 }
 504                 if (cstate==LinphoneCallEnd || cstate==LinphoneCallError){
 505              switch(call->reason){
 506                                 case LinphoneReasonDeclined:
 507                                         call->log->status=LinphoneCallDeclined;
 508                                 case LinphoneReasonNotAnswered:
 509                                         call->log->status=LinphoneCallMissed;
 510                                 break;
 511                                 default:
 512                                 break;
 513                         }
 514                         linphone_call_set_terminated (call);
 515                 }
 516                 if (cstate == LinphoneCallConnected) {
 517                         call->log->status=LinphoneCallSuccess;
 518                         call->media_start_time=time(NULL);
 519                 }
 520
 521                 if (lc->vtable.call_state_changed)
 522                         lc->vtable.call_state_changed(lc,call,cstate,message);
 523                 if (cstate==LinphoneCallReleased){
 524                         if (call->op!=NULL) {
 525                                 /* so that we cannot have anymore upcalls for SAL
 526                                  concerning this call*/
 527                                 sal_op_release(call->op);
 528                                 call->op=NULL;
 529                         }
 530                         linphone_call_unref(call);
 531                 }
 532         }
 533 }
 534
 535 static void linphone_call_destroy(LinphoneCall *obj)
 536 {
 537         if (obj->op!=NULL) {
 538                 sal_op_release(obj->op);
 539                 obj->op=NULL;
 540         }
 541         if (obj->ice_session!=NULL) {
 542                 ice_session_destroy(obj->ice_session);
 543                 obj->ice_session=NULL;
 544         }
 545         if (obj->resultdesc!=NULL) {
 546                 sal_media_description_unref(obj->resultdesc);
 547                 obj->resultdesc=NULL;
 548         }
 549         if (obj->localdesc!=NULL) {
 550                 sal_media_description_unref(obj->localdesc);
 551                 obj->localdesc=NULL;
 552         }
 553         if (obj->ping_op) {
 554                 sal_op_release(obj->ping_op);
 555         }
 556         if (obj->refer_to){
 557                 ms_free(obj->refer_to);
 558         }
 559         if (obj->owns_call_log)
 560                 linphone_call_log_destroy(obj->log);
 561         if (obj->auth_token) {
 562                 ms_free(obj->auth_token);
 563         }
 564
 565         ms_free(obj);
 566 }
 567
 568 /**
 569  * @addtogroup call_control
 570  * @{
 571 **/
 572
 573 /**
 574  * Increments the call 's reference count.
 575  * An application that wishes to retain a pointer to call object
 576  * must use this function to unsure the pointer remains
 577  * valid. Once the application no more needs this pointer,
 578  * it must call linphone_call_unref().
 579 **/
 580 LinphoneCall * linphone_call_ref(LinphoneCall *obj){
 581         obj->refcnt++;
 582         return obj;
 583 }
 584
 585 /**
 586  * Decrements the call object reference count.
 587  * See linphone_call_ref().
 588 **/
 589 void linphone_call_unref(LinphoneCall *obj){
 590         obj->refcnt--;
 591         if (obj->refcnt==0){
 592                 linphone_call_destroy(obj);
 593         }
 594 }
 595
 596 /**
 597  * Returns current parameters associated to the call.
 598 **/
 599 const LinphoneCallParams * linphone_call_get_current_params(const LinphoneCall *call){
 600         return &call->current_params;
 601 }
 602
 603 static bool_t is_video_active(const SalStreamDescription *sd){
 604         return sd->port!=0 && sd->dir!=SalStreamInactive;
 605 }
 606
 607 /**
 608  * Returns call parameters proposed by remote.
 609  *
 610  * This is useful when receiving an incoming call, to know whether the remote party
 611  * supports video, encryption or whatever.
 612 **/
 613 const LinphoneCallParams * linphone_call_get_remote_params(LinphoneCall *call){
 614         LinphoneCallParams *cp=&call->remote_params;
 615         memset(cp,0,sizeof(*cp));
 616         if (call->op){
 617                 SalMediaDescription *md=sal_call_get_remote_media_description(call->op);
 618                 if (md){
 619                         SalStreamDescription *asd,*vsd,*secure_asd,*secure_vsd;
 620
 621                         asd=sal_media_description_find_stream(md,SalProtoRtpAvp,SalAudio);
 622                         vsd=sal_media_description_find_stream(md,SalProtoRtpAvp,SalVideo);
 623                         secure_asd=sal_media_description_find_stream(md,SalProtoRtpSavp,SalAudio);
 624                         secure_vsd=sal_media_description_find_stream(md,SalProtoRtpSavp,SalVideo);
 625                         if (secure_vsd){
 626                                 cp->has_video=is_video_active(secure_vsd);
 627                                 if (secure_asd || asd==NULL)
 628                                         cp->media_encryption=LinphoneMediaEncryptionSRTP;
 629                         }else if (vsd){
 630                                 cp->has_video=is_video_active(vsd);
 631                         }
 632                         return cp;
 633                 }
 634         }
 635         return NULL;
 636 }
 637
 638 /**
 639  * Returns the remote address associated to this call
 640  *
 641 **/
 642 const LinphoneAddress * linphone_call_get_remote_address(const LinphoneCall *call){
 643         return call->dir==LinphoneCallIncoming ? call->log->from : call->log->to;
 644 }
 645
 646 /**
 647  * Returns the remote address associated to this call as a string.
 648  *
 649  * The result string must be freed by user using ms_free().
 650 **/
 651 char *linphone_call_get_remote_address_as_string(const LinphoneCall *call){
 652         return linphone_address_as_string(linphone_call_get_remote_address(call));
 653 }
 654
 655 /**
 656  * Retrieves the call's current state.
 657 **/
 658 LinphoneCallState linphone_call_get_state(const LinphoneCall *call){
 659         return call->state;
 660 }
 661
 662 /**
 663  * Returns the reason for a call termination (either error or normal termination)
 664 **/
 665 LinphoneReason linphone_call_get_reason(const LinphoneCall *call){
 666         return call->reason;
 667 }
 668
 669 /**
 670  * Get the user_pointer in the LinphoneCall
 671  *
 672  * @ingroup call_control
 673  *
 674  * return user_pointer an opaque user pointer that can be retrieved at any time
 675 **/
 676 void *linphone_call_get_user_pointer(LinphoneCall *call)
 677 {
 678         return call->user_pointer;
 679 }
 680
 681 /**
 682  * Set the user_pointer in the LinphoneCall
 683  *
 684  * @ingroup call_control
 685  *
 686  * the user_pointer is an opaque user pointer that can be retrieved at any time in the LinphoneCall
 687 **/
 688 void linphone_call_set_user_pointer(LinphoneCall *call, void *user_pointer)
 689 {
 690         call->user_pointer = user_pointer;
 691 }
 692
 693 /**
 694  * Returns the call log associated to this call.
 695 **/
 696 LinphoneCallLog *linphone_call_get_call_log(const LinphoneCall *call){
 697         return call->log;
 698 }
 699
 700 /**
 701  * Returns the refer-to uri (if the call was transfered).
 702 **/
 703 const char *linphone_call_get_refer_to(const LinphoneCall *call){
 704         return call->refer_to;
 705 }
 706
 707 /**
 708  * Returns direction of the call (incoming or outgoing).
 709 **/
 710 LinphoneCallDir linphone_call_get_dir(const LinphoneCall *call){
 711         return call->log->dir;
 712 }
 713
 714 /**
 715  * Returns the far end's user agent description string, if available.
 716 **/
 717 const char *linphone_call_get_remote_user_agent(LinphoneCall *call){
 718         if (call->op){
 719                 return sal_op_get_remote_ua (call->op);
 720         }
 721         return NULL;
 722 }
 723
 724 /**
 725  * Returns true if this calls has received a transfer that has not been
 726  * executed yet.
 727  * Pending transfers are executed when this call is being paused or closed,
 728  * locally or by remote endpoint.
 729  * If the call is already paused while receiving the transfer request, the
 730  * transfer immediately occurs.
 731 **/
 732 bool_t linphone_call_has_transfer_pending(const LinphoneCall *call){
 733         return call->refer_pending;
 734 }
 735
 736 /**
 737  * Returns call's duration in seconds.
 738 **/
 739 int linphone_call_get_duration(const LinphoneCall *call){
 740         if (call->media_start_time==0) return 0;
 741         return time(NULL)-call->media_start_time;
 742 }
 743
 744 /**
 745  * Returns the call object this call is replacing, if any.
 746  * Call replacement can occur during call transfers.
 747  * By default, the core automatically terminates the replaced call and accept the new one.
 748  * This function allows the application to know whether a new incoming call is a one that replaces another one.
 749 **/
 750 LinphoneCall *linphone_call_get_replaced_call(LinphoneCall *call){
 751         SalOp *op=sal_call_get_replaces(call->op);
 752         if (op){
 753                 return (LinphoneCall*)sal_op_get_user_pointer(op);
 754         }
 755         return NULL;
 756 }
 757
 758 /**
 759  * Indicate whether camera input should be sent to remote end.
 760 **/
 761 void linphone_call_enable_camera (LinphoneCall *call, bool_t enable){
 762 #ifdef VIDEO_ENABLED
 763         if (call->videostream!=NULL && call->videostream->ticker!=NULL){
 764                 LinphoneCore *lc=call->core;
 765                 MSWebCam *nowebcam=get_nowebcam_device();
 766                 if (call->camera_active!=enable && lc->video_conf.device!=nowebcam){
 767                         video_stream_change_camera(call->videostream,
 768                                      enable ? lc->video_conf.device : nowebcam);
 769                 }
 770         }
 771         call->camera_active=enable;
 772 #endif
 773 }
 774
 775 /**
 776  * Take a photo of currently received video and write it into a jpeg file.
 777 **/
 778 int linphone_call_take_video_snapshot(LinphoneCall *call, const char *file){
 779 #ifdef VIDEO_ENABLED
 780         if (call->videostream!=NULL && call->videostream->jpegwriter!=NULL){
 781                 return ms_filter_call_method(call->videostream->jpegwriter,MS_JPEG_WRITER_TAKE_SNAPSHOT,(void*)file);
 782         }
 783         ms_warning("Cannot take snapshot: no currently running video stream on this call.");
 784         return -1;
 785 #endif
 786         return -1;
 787 }
 788
 789 /**
 790  * Returns TRUE if camera pictures are sent to the remote party.
 791 **/
 792 bool_t linphone_call_camera_enabled (const LinphoneCall *call){
 793         return call->camera_active;
 794 }
 795
 796 /**
 797  * Enable video stream.
 798 **/
 799 void linphone_call_params_enable_video(LinphoneCallParams *cp, bool_t enabled){
 800         cp->has_video=enabled;
 801 }
 802
 803 const PayloadType* linphone_call_params_get_used_audio_codec(const LinphoneCallParams *cp) {
 804         return cp->audio_codec;
 805 }
 806
 807 const PayloadType* linphone_call_params_get_used_video_codec(const LinphoneCallParams *cp) {
 808         return cp->video_codec;
 809 }
 810
 811 /**
 812  * Returns whether video is enabled.
 813 **/
 814 bool_t linphone_call_params_video_enabled(const LinphoneCallParams *cp){
 815         return cp->has_video;
 816 }
 817
 818 enum LinphoneMediaEncryption linphone_call_params_get_media_encryption(const LinphoneCallParams *cp) {
 819         return cp->media_encryption;
 820 }
 821
 822 void linphone_call_params_set_media_encryption(LinphoneCallParams *cp, enum LinphoneMediaEncryption e) {
 823         cp->media_encryption = e;
 824 }
 825
 826
 827 /**
 828  * Enable sending of real early media (during outgoing calls).
 829 **/
 830 void linphone_call_params_enable_early_media_sending(LinphoneCallParams *cp, bool_t enabled){
 831         cp->real_early_media=enabled;
 832 }
 833
 834 bool_t linphone_call_params_early_media_sending_enabled(const LinphoneCallParams *cp){
 835         return cp->real_early_media;
 836 }
 837
 838 /**
 839  * Returns true if the call is part of the locally managed conference.
 840 **/
 841 bool_t linphone_call_params_local_conference_mode(const LinphoneCallParams *cp){
 842         return cp->in_conference;
 843 }
 844
 845 /**
 846  * Refine bandwidth settings for this call by setting a bandwidth limit for audio streams.
 847  * As a consequence, codecs whose bitrates are not compatible with this limit won't be used.
 848 **/
 849 void linphone_call_params_set_audio_bandwidth_limit(LinphoneCallParams *cp, int bandwidth){
 850         cp->audio_bw=bandwidth;
 851 }
 852
 853 #ifdef VIDEO_ENABLED
 854 /**
 855  * Request remote side to send us a Video Fast Update.
 856 **/
 857 void linphone_call_send_vfu_request(LinphoneCall *call)
 858 {
 859         if (LinphoneCallStreamsRunning == linphone_call_get_state(call))
 860                 sal_call_send_vfu_request(call->op);
 861 }
 862 #endif
 863
 864 /**
 865  *
 866 **/
 867 LinphoneCallParams * linphone_call_params_copy(const LinphoneCallParams *cp){
 868         LinphoneCallParams *ncp=ms_new0(LinphoneCallParams,1);
 869         memcpy(ncp,cp,sizeof(LinphoneCallParams));
 870         return ncp;
 871 }
 872
 873 /**
 874  *
 875 **/
 876 void linphone_call_params_destroy(LinphoneCallParams *p){
 877         ms_free(p);
 878 }
 879
 880 /**
 881  * @}
 882 **/
 883
 884
 885 #ifdef TEST_EXT_RENDERER
 886 static void rendercb(void *data, const MSPicture *local, const MSPicture *remote){
 887         ms_message("rendercb, local buffer=%p, remote buffer=%p",
 888                    local ? local->planes[0] : NULL, remote? remote->planes[0] : NULL);
 889 }
 890 #endif
 891
 892 #ifdef VIDEO_ENABLED
 893 static void video_stream_event_cb(void *user_pointer, const MSFilter *f, const unsigned int event_id, const void *args){
 894     LinphoneCall* call = (LinphoneCall*) user_pointer;
 895         ms_warning("In linphonecall.c: video_stream_event_cb");
 896         switch (event_id) {
 897                 case MS_VIDEO_DECODER_DECODING_ERRORS:
 898                         ms_warning("Case is MS_VIDEO_DECODER_DECODING_ERRORS");
 899                         linphone_call_send_vfu_request(call);
 900                         break;
 901         case MS_VIDEO_DECODER_FIRST_IMAGE_DECODED:
 902             ms_message("First video frame decoded successfully");
 903             if (call->nextVideoFrameDecoded._func != NULL)
 904                 call->nextVideoFrameDecoded._func(call, call->nextVideoFrameDecoded._user_data);
 905             break;
 906                 default:
 907                         ms_warning("Unhandled event %i", event_id);
 908                         break;
 909         }
 910 }
 911 #endif
 912
 913 void linphone_call_set_next_video_frame_decoded_callback(LinphoneCall *call, LinphoneCallCbFunc cb, void* user_data) {
 914     call->nextVideoFrameDecoded._func = cb;
 915     call->nextVideoFrameDecoded._user_data = user_data;
 916 #ifdef VIDEO_ENABLED
 917     ms_filter_call_method_noarg(call->videostream->decoder, MS_VIDEO_DECODER_RESET_FIRST_IMAGE_NOTIFICATION);
 918 #endif
 919 }
 920
 921 void linphone_call_init_media_streams(LinphoneCall *call){
 922         LinphoneCore *lc=call->core;
 923         SalMediaDescription *md=call->localdesc;
 924         AudioStream *audiostream;
 925
 926         call->audiostream=audiostream=audio_stream_new(md->streams[0].port,linphone_core_ipv6_enabled(lc));
 927         if (linphone_core_echo_limiter_enabled(lc)){
 928                 const char *type=lp_config_get_string(lc->config,"sound","el_type","mic");
 929                 if (strcasecmp(type,"mic")==0)
 930                         audio_stream_enable_echo_limiter(audiostream,ELControlMic);
 931                 else if (strcasecmp(type,"full")==0)
 932                         audio_stream_enable_echo_limiter(audiostream,ELControlFull);
 933         }
 934         audio_stream_enable_gain_control(audiostream,TRUE);
 935         if (linphone_core_echo_cancellation_enabled(lc)){
 936                 int len,delay,framesize;
 937                 const char *statestr=lp_config_get_string(lc->config,"sound","ec_state",NULL);
 938                 len=lp_config_get_int(lc->config,"sound","ec_tail_len",0);
 939                 delay=lp_config_get_int(lc->config,"sound","ec_delay",0);
 940                 framesize=lp_config_get_int(lc->config,"sound","ec_framesize",0);
 941                 audio_stream_set_echo_canceller_params(audiostream,len,delay,framesize);
 942                 if (statestr && audiostream->ec){
 943                         ms_filter_call_method(audiostream->ec,MS_ECHO_CANCELLER_SET_STATE_STRING,(void*)statestr);
 944                 }
 945         }
 946         audio_stream_enable_automatic_gain_control(audiostream,linphone_core_agc_enabled(lc));
 947         {
 948                 int enabled=lp_config_get_int(lc->config,"sound","noisegate",0);
 949                 audio_stream_enable_noise_gate(audiostream,enabled);
 950         }
 951
 952         if (lc->rtptf){
 953                 RtpTransport *artp=lc->rtptf->audio_rtp_func(lc->rtptf->audio_rtp_func_data, call->audio_port);
 954                 RtpTransport *artcp=lc->rtptf->audio_rtcp_func(lc->rtptf->audio_rtcp_func_data, call->audio_port+1);
 955                 rtp_session_set_transports(audiostream->session,artp,artcp);
 956         }
 957         if (linphone_core_get_firewall_policy(lc) == LinphonePolicyUseIce){
 958                 rtp_session_set_pktinfo(audiostream->session,TRUE);
 959                 audiostream->ice_check_list = call->localdesc->streams[0].ice_check_list;
 960                 ice_check_list_register_success_cb(audiostream->ice_check_list, audio_stream_set_remote_from_ice, audiostream);
 961         }
 962
 963         call->audiostream_app_evq = ortp_ev_queue_new();
 964         rtp_session_register_event_queue(audiostream->session,call->audiostream_app_evq);
 965
 966 #ifdef VIDEO_ENABLED
 967
 968         if ((lc->video_conf.display || lc->video_conf.capture) && md->streams[1].port>0){
 969                 int video_recv_buf_size=lp_config_get_int(lc->config,"video","recv_buf_size",0);
 970                 call->videostream=video_stream_new(md->streams[1].port,linphone_core_ipv6_enabled(lc));
 971                 video_stream_enable_display_filter_auto_rotate(call->videostream, lp_config_get_int(lc->config,"video","display_filter_auto_rotate",0));
 972                 if (video_recv_buf_size>0) rtp_session_set_recv_buf_size(call->videostream->session,video_recv_buf_size);
 973
 974                 if( lc->video_conf.displaytype != NULL)
 975                         video_stream_set_display_filter_name(call->videostream,lc->video_conf.displaytype);
 976                 video_stream_set_event_callback(call->videostream,video_stream_event_cb, call);
 977                 if (lc->rtptf){
 978                         RtpTransport *vrtp=lc->rtptf->video_rtp_func(lc->rtptf->video_rtp_func_data, call->video_port);
 979                         RtpTransport *vrtcp=lc->rtptf->video_rtcp_func(lc->rtptf->video_rtcp_func_data, call->video_port+1);
 980                         rtp_session_set_transports(call->videostream->session,vrtp,vrtcp);
 981                 }
 982                 if (linphone_core_get_firewall_policy(lc) == LinphonePolicyUseIce){
 983                         rtp_session_set_pktinfo(call->videostream->session,TRUE);
 984                         call->videostream->ice_check_list = call->localdesc->streams[1].ice_check_list;
 985                         ice_check_list_register_success_cb(call->videostream->ice_check_list, video_stream_set_remote_from_ice, call->videostream);
 986                 }
 987                 call->videostream_app_evq = ortp_ev_queue_new();
 988                 rtp_session_register_event_queue(call->videostream->session,call->videostream_app_evq);
 989 #ifdef TEST_EXT_RENDERER
 990                 video_stream_set_render_callback(call->videostream,rendercb,NULL);
 991 #endif
 992         }
 993 #else
 994         call->videostream=NULL;
 995 #endif
 996 }
 997
 998
 999 static int dtmf_tab[16]={'0','1','2','3','4','5','6','7','8','9','*','#','A','B','C','D'};
1000
1001 static void linphone_core_dtmf_received(RtpSession* s, int dtmf, void* user_data){
1002         LinphoneCore* lc = (LinphoneCore*)user_data;
1003         if (dtmf<0 || dtmf>15){
1004                 ms_warning("Bad dtmf value %i",dtmf);
1005                 return;
1006         }
1007         if (lc->vtable.dtmf_received != NULL)
1008                 lc->vtable.dtmf_received(lc, linphone_core_get_current_call(lc), dtmf_tab[dtmf]);
1009 }
1010
1011 static void parametrize_equalizer(LinphoneCore *lc, AudioStream *st){
1012         if (st->equalizer){
1013                 MSFilter *f=st->equalizer;
1014                 int enabled=lp_config_get_int(lc->config,"sound","eq_active",0);
1015                 const char *gains=lp_config_get_string(lc->config,"sound","eq_gains",NULL);
1016                 ms_filter_call_method(f,MS_EQUALIZER_SET_ACTIVE,&enabled);
1017                 if (enabled){
1018                         if (gains){
1019                                 do{
1020                                         int bytes;
1021                                         MSEqualizerGain g;
1022                                         if (sscanf(gains,"%f:%f:%f %n",&g.frequency,&g.gain,&g.width,&bytes)==3){
1023                                                 ms_message("Read equalizer gains: %f(~%f) --> %f",g.frequency,g.width,g.gain);
1024                                                 ms_filter_call_method(f,MS_EQUALIZER_SET_GAIN,&g);
1025                                                 gains+=bytes;
1026                                         }else break;
1027                                 }while(1);
1028                         }
1029                 }
1030         }
1031 }
1032
1033 void _post_configure_audio_stream(AudioStream *st, LinphoneCore *lc, bool_t muted){
1034         float mic_gain=lp_config_get_float(lc->config,"sound","mic_gain",1);
1035         float thres = 0;
1036         float recv_gain;
1037         float ng_thres=lp_config_get_float(lc->config,"sound","ng_thres",0.05);
1038         float ng_floorgain=lp_config_get_float(lc->config,"sound","ng_floorgain",0);
1039         int dc_removal=lp_config_get_int(lc->config,"sound","dc_removal",0);
1040
1041         if (!muted)
1042                 audio_stream_set_mic_gain(st,mic_gain);
1043         else
1044                 audio_stream_set_mic_gain(st,0);
1045
1046         recv_gain = lc->sound_conf.soft_play_lev;
1047         if (recv_gain != 0) {
1048                 linphone_core_set_playback_gain_db (lc,recv_gain);
1049         }
1050
1051         if (st->volsend){
1052                 ms_filter_call_method(st->volsend,MS_VOLUME_REMOVE_DC,&dc_removal);
1053                 float speed=lp_config_get_float(lc->config,"sound","el_speed",-1);
1054                 thres=lp_config_get_float(lc->config,"sound","el_thres",-1);
1055                 float force=lp_config_get_float(lc->config,"sound","el_force",-1);
1056                 int sustain=lp_config_get_int(lc->config,"sound","el_sustain",-1);
1057                 float transmit_thres=lp_config_get_float(lc->config,"sound","el_transmit_thres",-1);
1058                 MSFilter *f=NULL;
1059                 f=st->volsend;
1060                 if (speed==-1) speed=0.03;
1061                 if (force==-1) force=25;
1062                 ms_filter_call_method(f,MS_VOLUME_SET_EA_SPEED,&speed);
1063                 ms_filter_call_method(f,MS_VOLUME_SET_EA_FORCE,&force);
1064                 if (thres!=-1)
1065                         ms_filter_call_method(f,MS_VOLUME_SET_EA_THRESHOLD,&thres);
1066                 if (sustain!=-1)
1067                         ms_filter_call_method(f,MS_VOLUME_SET_EA_SUSTAIN,&sustain);
1068                 if (transmit_thres!=-1)
1069                                 ms_filter_call_method(f,MS_VOLUME_SET_EA_TRANSMIT_THRESHOLD,&transmit_thres);
1070
1071                 ms_filter_call_method(st->volsend,MS_VOLUME_SET_NOISE_GATE_THRESHOLD,&ng_thres);
1072                 ms_filter_call_method(st->volsend,MS_VOLUME_SET_NOISE_GATE_FLOORGAIN,&ng_floorgain);
1073         }
1074         if (st->volrecv){
1075                 /* parameters for a limited noise-gate effect, using echo limiter threshold */
1076                 float floorgain = 1/mic_gain;
1077                 int spk_agc=lp_config_get_int(lc->config,"sound","speaker_agc_enabled",0);
1078                 ms_filter_call_method(st->volrecv, MS_VOLUME_ENABLE_AGC, &spk_agc);
1079                 ms_filter_call_method(st->volrecv,MS_VOLUME_SET_NOISE_GATE_THRESHOLD,&ng_thres);
1080                 ms_filter_call_method(st->volrecv,MS_VOLUME_SET_NOISE_GATE_FLOORGAIN,&floorgain);
1081         }
1082         parametrize_equalizer(lc,st);
1083 }
1084
1085 static void post_configure_audio_streams(LinphoneCall*call){
1086         AudioStream *st=call->audiostream;
1087         LinphoneCore *lc=call->core;
1088         _post_configure_audio_stream(st,lc,call->audio_muted);
1089         if (lc->vtable.dtmf_received!=NULL){
1090                 /* replace by our default action*/
1091                 audio_stream_play_received_dtmfs(call->audiostream,FALSE);
1092                 rtp_session_signal_connect(call->audiostream->session,"telephone-event",(RtpCallback)linphone_core_dtmf_received,(unsigned long)lc);
1093         }
1094 }
1095
1096 static RtpProfile *make_profile(LinphoneCall *call, const SalMediaDescription *md, const SalStreamDescription *desc, int *used_pt){
1097         int bw;
1098         const MSList *elem;
1099         RtpProfile *prof=rtp_profile_new("Call profile");
1100         bool_t first=TRUE;
1101         int remote_bw=0;
1102         LinphoneCore *lc=call->core;
1103         int up_ptime=0;
1104         *used_pt=-1;
1105
1106         for(elem=desc->payloads;elem!=NULL;elem=elem->next){
1107                 PayloadType *pt=(PayloadType*)elem->data;
1108                 int number;
1109
1110                 if ((pt->flags & PAYLOAD_TYPE_FLAG_CAN_SEND) && first) {
1111                         if (desc->type==SalAudio){
1112                                 linphone_core_update_allocated_audio_bandwidth_in_call(call,pt);
1113                                 up_ptime=linphone_core_get_upload_ptime(lc);
1114                         }
1115                         *used_pt=payload_type_get_number(pt);
1116                         first=FALSE;
1117                 }
1118                 if (desc->bandwidth>0) remote_bw=desc->bandwidth;
1119                 else if (md->bandwidth>0) {
1120                         /*case where b=AS is given globally, not per stream*/
1121                         remote_bw=md->bandwidth;
1122                         if (desc->type==SalVideo){
1123                                 remote_bw=get_video_bandwidth(remote_bw,call->audio_bw);
1124                         }
1125                 }
1126
1127                 if (desc->type==SalAudio){
1128                                 bw=get_min_bandwidth(call->audio_bw,remote_bw);
1129                 }else bw=get_min_bandwidth(get_video_bandwidth(linphone_core_get_upload_bandwidth (lc),call->audio_bw),remote_bw);
1130                 if (bw>0) pt->normal_bitrate=bw*1000;
1131                 else if (desc->type==SalAudio){
1132                         pt->normal_bitrate=-1;
1133                 }
1134                 if (desc->ptime>0){
1135                         up_ptime=desc->ptime;
1136                 }
1137                 if (up_ptime>0){
1138                         char tmp[40];
1139                         snprintf(tmp,sizeof(tmp),"ptime=%i",up_ptime);
1140                         payload_type_append_send_fmtp(pt,tmp);
1141                 }
1142                 number=payload_type_get_number(pt);
1143                 if (rtp_profile_get_payload(prof,number)!=NULL){
1144                         ms_warning("A payload type with number %i already exists in profile !",number);
1145                 }else
1146                         rtp_profile_set_payload(prof,number,pt);
1147         }
1148         return prof;
1149 }
1150
1151
1152 static void setup_ring_player(LinphoneCore *lc, LinphoneCall *call){
1153         int pause_time=3000;
1154         audio_stream_play(call->audiostream,lc->sound_conf.ringback_tone);
1155         ms_filter_call_method(call->audiostream->soundread,MS_FILE_PLAYER_LOOP,&pause_time);
1156 }
1157
1158 #define LINPHONE_RTCP_SDES_TOOL "Linphone-" LINPHONE_VERSION
1159
1160 static bool_t linphone_call_sound_resources_available(LinphoneCall *call){
1161         LinphoneCore *lc=call->core;
1162         LinphoneCall *current=linphone_core_get_current_call(lc);
1163         return !linphone_core_is_in_conference(lc) &&
1164                 (current==NULL || current==call);
1165 }
1166 static int find_crypto_index_from_tag(const SalSrtpCryptoAlgo crypto[],unsigned char tag) {
1167     int i;
1168     for(i=0; i<SAL_CRYPTO_ALGO_MAX; i++) {
1169         if (crypto[i].tag == tag) {
1170             return i;
1171         }
1172     }
1173     return -1;
1174 }
1175 static void linphone_call_start_audio_stream(LinphoneCall *call, const char *cname, bool_t muted, bool_t send_ringbacktone, bool_t use_arc){
1176         LinphoneCore *lc=call->core;
1177         int jitt_comp=lc->rtp_conf.audio_jitt_comp;
1178         int used_pt=-1;
1179         /* look for savp stream first */
1180         const SalStreamDescription *stream=sal_media_description_find_stream(call->resultdesc,
1181                                                 SalProtoRtpSavp,SalAudio);
1182         /* no savp audio stream, use avp */
1183         if (!stream)
1184                 stream=sal_media_description_find_stream(call->resultdesc,
1185                                                 SalProtoRtpAvp,SalAudio);
1186
1187         if (stream && stream->dir!=SalStreamInactive && stream->port!=0){
1188                 MSSndCard *playcard=lc->sound_conf.lsd_card ?
1189                         lc->sound_conf.lsd_card : lc->sound_conf.play_sndcard;
1190                 MSSndCard *captcard=lc->sound_conf.capt_sndcard;
1191                 const char *playfile=lc->play_file;
1192                 const char *recfile=lc->rec_file;
1193                 call->audio_profile=make_profile(call,call->resultdesc,stream,&used_pt);
1194                 bool_t use_ec;
1195
1196                 if (used_pt!=-1){
1197                         call->current_params.audio_codec = rtp_profile_get_payload(call->audio_profile, used_pt);
1198                         if (playcard==NULL) {
1199                                 ms_warning("No card defined for playback !");
1200                         }
1201                         if (captcard==NULL) {
1202                                 ms_warning("No card defined for capture !");
1203                         }
1204                         /*Replace soundcard filters by inactive file players or recorders
1205                          when placed in recvonly or sendonly mode*/
1206                         if (stream->port==0 || stream->dir==SalStreamRecvOnly){
1207                                 captcard=NULL;
1208                                 playfile=NULL;
1209                         }else if (stream->dir==SalStreamSendOnly){
1210                                 playcard=NULL;
1211                                 captcard=NULL;
1212                                 recfile=NULL;
1213                                 /*And we will eventually play "playfile" if set by the user*/
1214                                 /*playfile=NULL;*/
1215                         }
1216                         if (send_ringbacktone){
1217                                 captcard=NULL;
1218                                 playfile=NULL;/* it is setup later*/
1219                         }
1220                         /*if playfile are supplied don't use soundcards*/
1221                         if (lc->use_files) {
1222                                 captcard=NULL;
1223                                 playcard=NULL;
1224                         }
1225                         if (call->params.in_conference){
1226                                 /* first create the graph without soundcard resources*/
1227                                 captcard=playcard=NULL;
1228                         }
1229                         if (!linphone_call_sound_resources_available(call)){
1230                                 ms_message("Sound resources are used by another call, not using soundcard.");
1231                                 captcard=playcard=NULL;
1232                         }
1233                         use_ec=captcard==NULL ? FALSE : linphone_core_echo_cancellation_enabled(lc);
1234                         if (playcard &&  stream->max_rate>0) ms_snd_card_set_preferred_sample_rate(playcard, stream->max_rate);
1235                         if (captcard &&  stream->max_rate>0) ms_snd_card_set_preferred_sample_rate(captcard, stream->max_rate);
1236                         audio_stream_enable_adaptive_bitrate_control(call->audiostream,use_arc);
1237                         audio_stream_start_full(
1238                                 call->audiostream,
1239                                 call->audio_profile,
1240                                 stream->addr[0]!='\0' ? stream->addr : call->resultdesc->addr,
1241                                 stream->port,
1242                                 linphone_core_rtcp_enabled(lc) ? (stream->port+1) : 0,
1243                                 used_pt,
1244                                 jitt_comp,
1245                                 playfile,
1246                                 recfile,
1247                                 playcard,
1248                                 captcard,
1249                                 use_ec
1250                                 );
1251                         post_configure_audio_streams(call);
1252                         if (muted && !send_ringbacktone){
1253                                 audio_stream_set_mic_gain(call->audiostream,0);
1254                         }
1255                         if (stream->dir==SalStreamSendOnly && playfile!=NULL){
1256                                 int pause_time=500;
1257                                 ms_filter_call_method(call->audiostream->soundread,MS_FILE_PLAYER_LOOP,&pause_time);
1258                         }
1259                         if (send_ringbacktone){
1260                                 setup_ring_player(lc,call);
1261                         }
1262                         audio_stream_set_rtcp_information(call->audiostream, cname, LINPHONE_RTCP_SDES_TOOL);
1263
1264             /* valid local tags are > 0 */
1265                         if (stream->proto == SalProtoRtpSavp) {
1266                 const SalStreamDescription *local_st_desc=sal_media_description_find_stream(call->localdesc,
1267                                                                                             SalProtoRtpSavp,SalAudio);
1268                 int crypto_idx = find_crypto_index_from_tag(local_st_desc->crypto, stream->crypto_local_tag);
1269
1270                 if (crypto_idx >= 0) {
1271                     audio_stream_enable_strp(
1272                                              call->audiostream,
1273                                              stream->crypto[0].algo,
1274                                              local_st_desc->crypto[crypto_idx].master_key,
1275                                              stream->crypto[0].master_key);
1276                     call->audiostream_encrypted=TRUE;
1277                 } else {
1278                     ms_warning("Failed to find local crypto algo with tag: %d", stream->crypto_local_tag);
1279                     call->audiostream_encrypted=FALSE;
1280                 }
1281                         }else call->audiostream_encrypted=FALSE;
1282                         if (call->params.in_conference){
1283                                 /*transform the graph to connect it to the conference filter */
1284                                 bool_t mute=stream->dir==SalStreamRecvOnly;
1285                                 linphone_call_add_to_conf(call, mute);
1286                         }
1287                         call->current_params.in_conference=call->params.in_conference;
1288                 }else ms_warning("No audio stream accepted ?");
1289         }
1290 }
1291
1292 static void linphone_call_start_video_stream(LinphoneCall *call, const char *cname,bool_t all_inputs_muted){
1293 #ifdef VIDEO_ENABLED
1294         LinphoneCore *lc=call->core;
1295         int used_pt=-1;
1296         /* look for savp stream first */
1297         const SalStreamDescription *vstream=sal_media_description_find_stream(call->resultdesc,
1298                                                 SalProtoRtpSavp,SalVideo);
1299         /* no savp audio stream, use avp */
1300         if (!vstream)
1301                 vstream=sal_media_description_find_stream(call->resultdesc,
1302                                                 SalProtoRtpAvp,SalVideo);
1303
1304         /* shutdown preview */
1305         if (lc->previewstream!=NULL) {
1306                 video_preview_stop(lc->previewstream);
1307                 lc->previewstream=NULL;
1308         }
1309
1310         if (vstream!=NULL && vstream->dir!=SalStreamInactive && vstream->port!=0) {
1311                 const char *addr=vstream->addr[0]!='\0' ? vstream->addr : call->resultdesc->addr;
1312                 call->video_profile=make_profile(call,call->resultdesc,vstream,&used_pt);
1313                 if (used_pt!=-1){
1314                         call->current_params.video_codec = rtp_profile_get_payload(call->video_profile, used_pt);
1315                         VideoStreamDir dir=VideoStreamSendRecv;
1316                         MSWebCam *cam=lc->video_conf.device;
1317                         bool_t is_inactive=FALSE;
1318
1319                         call->current_params.has_video=TRUE;
1320
1321                         video_stream_enable_adaptive_bitrate_control(call->videostream,
1322                                                                   linphone_core_adaptive_rate_control_enabled(lc));
1323                         video_stream_set_sent_video_size(call->videostream,linphone_core_get_preferred_video_size(lc));
1324                         video_stream_enable_self_view(call->videostream,lc->video_conf.selfview);
1325                         if (lc->video_window_id!=0)
1326                                 video_stream_set_native_window_id(call->videostream,lc->video_window_id);
1327                         if (lc->preview_window_id!=0)
1328                                 video_stream_set_native_preview_window_id (call->videostream,lc->preview_window_id);
1329                         video_stream_use_preview_video_window (call->videostream,lc->use_preview_window);
1330
1331                         if (vstream->dir==SalStreamSendOnly && lc->video_conf.capture ){
1332                                 cam=get_nowebcam_device();
1333                                 dir=VideoStreamSendOnly;
1334                         }else if (vstream->dir==SalStreamRecvOnly && lc->video_conf.display ){
1335                                 dir=VideoStreamRecvOnly;
1336                         }else if (vstream->dir==SalStreamSendRecv){
1337                                 if (lc->video_conf.display && lc->video_conf.capture)
1338                                         dir=VideoStreamSendRecv;
1339                                 else if (lc->video_conf.display)
1340                                         dir=VideoStreamRecvOnly;
1341                                 else
1342                                         dir=VideoStreamSendOnly;
1343                         }else{
1344                                 ms_warning("video stream is inactive.");
1345                                 /*either inactive or incompatible with local capabilities*/
1346                                 is_inactive=TRUE;
1347                         }
1348                         if (call->camera_active==FALSE || all_inputs_muted){
1349                                 cam=get_nowebcam_device();
1350                         }
1351                         if (!is_inactive){
1352                 call->log->video_enabled = TRUE;
1353                                 video_stream_set_direction (call->videostream, dir);
1354                                 ms_message("%s lc rotation:%d\n", __FUNCTION__, lc->device_rotation);
1355                                 video_stream_set_device_rotation(call->videostream, lc->device_rotation);
1356                                 video_stream_start(call->videostream,
1357                                         call->video_profile, addr, vstream->port,
1358                                         linphone_core_rtcp_enabled(lc) ? (vstream->port+1) : 0,
1359                                         used_pt, lc->rtp_conf.audio_jitt_comp, cam);
1360                                 video_stream_set_rtcp_information(call->videostream, cname,LINPHONE_RTCP_SDES_TOOL);
1361                         }
1362
1363                         if (vstream->proto == SalProtoRtpSavp) {
1364                                 const SalStreamDescription *local_st_desc=sal_media_description_find_stream(call->localdesc,
1365                                                 SalProtoRtpSavp,SalVideo);
1366
1367                                 video_stream_enable_strp(
1368                                         call->videostream,
1369                                         vstream->crypto[0].algo,
1370                                         local_st_desc->crypto[0].master_key,
1371                                         vstream->crypto[0].master_key
1372                                         );
1373                                 call->videostream_encrypted=TRUE;
1374                         }else{
1375                                 call->videostream_encrypted=FALSE;
1376                         }
1377                 }else ms_warning("No video stream accepted.");
1378         }else{
1379                 ms_warning("No valid video stream defined.");
1380         }
1381 #endif
1382 }
1383
1384 void linphone_call_start_media_streams(LinphoneCall *call, bool_t all_inputs_muted, bool_t send_ringbacktone){
1385         LinphoneCore *lc=call->core;
1386
1387         call->current_params.audio_codec = NULL;
1388         call->current_params.video_codec = NULL;
1389
1390         LinphoneAddress *me=linphone_core_get_primary_contact_parsed(lc);
1391         char *cname;
1392         bool_t use_arc=linphone_core_adaptive_rate_control_enabled(lc);
1393 #ifdef VIDEO_ENABLED
1394         const SalStreamDescription *vstream=sal_media_description_find_stream(call->resultdesc,
1395                                                         SalProtoRtpAvp,SalVideo);
1396 #endif
1397
1398         if(call->audiostream == NULL)
1399         {
1400                 ms_fatal("start_media_stream() called without prior init !");
1401                 return;
1402         }
1403         cname=linphone_address_as_string_uri_only(me);
1404
1405 #if defined(VIDEO_ENABLED)
1406         if (vstream!=NULL && vstream->dir!=SalStreamInactive && vstream->payloads!=NULL){
1407                 /*when video is used, do not make adaptive rate control on audio, it is stupid.*/
1408                 use_arc=FALSE;
1409         }
1410 #endif
1411         linphone_call_start_audio_stream(call,cname,all_inputs_muted,send_ringbacktone,use_arc);
1412         call->current_params.has_video=FALSE;
1413         if (call->videostream!=NULL) {
1414                 linphone_call_start_video_stream(call,cname,all_inputs_muted);
1415         }
1416
1417         call->all_muted=all_inputs_muted;
1418         call->playing_ringbacktone=send_ringbacktone;
1419         call->up_bw=linphone_core_get_upload_bandwidth(lc);
1420
1421         if (call->params.media_encryption==LinphoneMediaEncryptionZRTP) {
1422                 OrtpZrtpParams params;
1423                 /*will be set later when zrtp is activated*/
1424                 call->current_params.media_encryption=LinphoneMediaEncryptionNone;
1425
1426                 params.zid_file=lc->zrtp_secrets_cache;
1427                 audio_stream_enable_zrtp(call->audiostream,&params);
1428         }else if (call->params.media_encryption==LinphoneMediaEncryptionSRTP){
1429                 call->current_params.media_encryption=linphone_call_are_all_streams_encrypted(call) ?
1430                         LinphoneMediaEncryptionSRTP : LinphoneMediaEncryptionNone;
1431         }
1432
1433         /*also reflect the change if the "wished" params, in order to avoid to propose SAVP or video again
1434          * further in the call, for example during pause,resume, conferencing reINVITEs*/
1435         linphone_call_fix_call_parameters(call);
1436
1437         goto end;
1438         end:
1439                 ms_free(cname);
1440                 linphone_address_destroy(me);
1441 }
1442
1443 static void linphone_call_log_fill_stats(LinphoneCallLog *log, AudioStream *st){
1444         audio_stream_get_local_rtp_stats (st,&log->local_stats);
1445         log->quality=audio_stream_get_average_quality_rating(st);
1446 }
1447
1448 void linphone_call_stop_media_streams(LinphoneCall *call){
1449         if (call->audiostream!=NULL) {
1450                 rtp_session_unregister_event_queue(call->audiostream->session,call->audiostream_app_evq);
1451                 ortp_ev_queue_flush(call->audiostream_app_evq);
1452                 ortp_ev_queue_destroy(call->audiostream_app_evq);
1453
1454                 if (call->audiostream->ec){
1455                         const char *state_str=NULL;
1456                         ms_filter_call_method(call->audiostream->ec,MS_ECHO_CANCELLER_GET_STATE_STRING,&state_str);
1457                         if (state_str){
1458                                 ms_message("Writing echo canceler state, %i bytes",(int)strlen(state_str));
1459                                 lp_config_set_string(call->core->config,"sound","ec_state",state_str);
1460                         }
1461                 }
1462                 linphone_call_log_fill_stats (call->log,call->audiostream);
1463                 if (call->endpoint){
1464                         linphone_call_remove_from_conf(call);
1465                 }
1466                 if (call->audiostream->ice_check_list) ice_check_list_destroy(call->audiostream->ice_check_list);
1467                 audio_stream_stop(call->audiostream);
1468                 call->audiostream=NULL;
1469         }
1470
1471
1472 #ifdef VIDEO_ENABLED
1473         if (call->videostream!=NULL){
1474                 rtp_session_unregister_event_queue(call->videostream->session,call->videostream_app_evq);
1475                 ortp_ev_queue_flush(call->videostream_app_evq);
1476                 ortp_ev_queue_destroy(call->videostream_app_evq);
1477                 if (call->videostream->ice_check_list) ice_check_list_destroy(call->videostream->ice_check_list);
1478                 video_stream_stop(call->videostream);
1479                 call->videostream=NULL;
1480         }
1481 #endif
1482         ms_event_queue_skip(call->core->msevq);
1483
1484         if (call->audio_profile){
1485                 rtp_profile_clear_all(call->audio_profile);
1486                 rtp_profile_destroy(call->audio_profile);
1487                 call->audio_profile=NULL;
1488         }
1489         if (call->video_profile){
1490                 rtp_profile_clear_all(call->video_profile);
1491                 rtp_profile_destroy(call->video_profile);
1492                 call->video_profile=NULL;
1493         }
1494 }
1495
1496
1497
1498 void linphone_call_enable_echo_cancellation(LinphoneCall *call, bool_t enable) {
1499         if (call!=NULL && call->audiostream!=NULL && call->audiostream->ec){
1500                 bool_t bypass_mode = !enable;
1501                 ms_filter_call_method(call->audiostream->ec,MS_ECHO_CANCELLER_SET_BYPASS_MODE,&bypass_mode);
1502         }
1503 }
1504 bool_t linphone_call_echo_cancellation_enabled(LinphoneCall *call) {
1505         if (call!=NULL && call->audiostream!=NULL && call->audiostream->ec){
1506                 bool_t val;
1507                 ms_filter_call_method(call->audiostream->ec,MS_ECHO_CANCELLER_GET_BYPASS_MODE,&val);
1508                 return !val;
1509         } else {
1510                 return linphone_core_echo_cancellation_enabled(call->core);
1511         }
1512 }
1513
1514 void linphone_call_enable_echo_limiter(LinphoneCall *call, bool_t val){
1515         if (call!=NULL && call->audiostream!=NULL ) {
1516                 if (val) {
1517                 const char *type=lp_config_get_string(call->core->config,"sound","el_type","mic");
1518                 if (strcasecmp(type,"mic")==0)
1519                         audio_stream_enable_echo_limiter(call->audiostream,ELControlMic);
1520                 else if (strcasecmp(type,"full")==0)
1521                         audio_stream_enable_echo_limiter(call->audiostream,ELControlFull);
1522                 } else {
1523                         audio_stream_enable_echo_limiter(call->audiostream,ELInactive);
1524                 }
1525         }
1526 }
1527
1528 bool_t linphone_call_echo_limiter_enabled(const LinphoneCall *call){
1529         if (call!=NULL && call->audiostream!=NULL ){
1530                 return call->audiostream->el_type !=ELInactive ;
1531         } else {
1532                 return linphone_core_echo_limiter_enabled(call->core);
1533         }
1534 }
1535
1536 /**
1537  * @addtogroup call_misc
1538  * @{
1539 **/
1540
1541 /**
1542  * Returns the measured sound volume played locally (received from remote).
1543  * It is expressed in dbm0.
1544 **/
1545 float linphone_call_get_play_volume(LinphoneCall *call){
1546         AudioStream *st=call->audiostream;
1547         if (st && st->volrecv){
1548                 float vol=0;
1549                 ms_filter_call_method(st->volrecv,MS_VOLUME_GET,&vol);
1550                 return vol;
1551
1552         }
1553         return LINPHONE_VOLUME_DB_LOWEST;
1554 }
1555
1556 /**
1557  * Returns the measured sound volume recorded locally (sent to remote).
1558  * It is expressed in dbm0.
1559 **/
1560 float linphone_call_get_record_volume(LinphoneCall *call){
1561         AudioStream *st=call->audiostream;
1562         if (st && st->volsend && !call->audio_muted && call->state==LinphoneCallStreamsRunning){
1563                 float vol=0;
1564                 ms_filter_call_method(st->volsend,MS_VOLUME_GET,&vol);
1565                 return vol;
1566
1567         }
1568         return LINPHONE_VOLUME_DB_LOWEST;
1569 }
1570
1571 /**
1572  * Obtain real-time quality rating of the call
1573  *
1574  * Based on local RTP statistics and RTCP feedback, a quality rating is computed and updated
1575  * during all the duration of the call. This function returns its value at the time of the function call.
1576  * It is expected that the rating is updated at least every 5 seconds or so.
1577  * The rating is a floating point number comprised between 0 and 5.
1578  *
1579  * 4-5 = good quality <br>
1580  * 3-4 = average quality <br>
1581  * 2-3 = poor quality <br>
1582  * 1-2 = very poor quality <br>
1583  * 0-1 = can't be worse, mostly unusable <br>
1584  *
1585  * @returns The function returns -1 if no quality measurement is available, for example if no
1586  * active audio stream exist. Otherwise it returns the quality rating.
1587 **/
1588 float linphone_call_get_current_quality(LinphoneCall *call){
1589         if (call->audiostream){
1590                 return audio_stream_get_quality_rating(call->audiostream);
1591         }
1592         return -1;
1593 }
1594
1595 /**
1596  * Returns call quality averaged over all the duration of the call.
1597  *
1598  * See linphone_call_get_current_quality() for more details about quality measurement.
1599 **/
1600 float linphone_call_get_average_quality(LinphoneCall *call){
1601         if (call->audiostream){
1602                 return audio_stream_get_average_quality_rating(call->audiostream);
1603         }
1604         return -1;
1605 }
1606
1607 /**
1608  * Access last known statistics for audio stream, for a given call.
1609 **/
1610 const LinphoneCallStats *linphone_call_get_audio_stats(const LinphoneCall *call) {
1611         return &call->stats[LINPHONE_CALL_STATS_AUDIO];
1612 }
1613
1614 /**
1615  * Access last known statistics for video stream, for a given call.
1616 **/
1617 const LinphoneCallStats *linphone_call_get_video_stats(const LinphoneCall *call) {
1618         return &call->stats[LINPHONE_CALL_STATS_VIDEO];
1619 }
1620
1621
1622 /**
1623  * @}
1624 **/
1625
1626 static void display_bandwidth(RtpSession *as, RtpSession *vs){
1627         ms_message("bandwidth usage: audio=[d=%.1f,u=%.1f] video=[d=%.1f,u=%.1f] kbit/sec",
1628         (as!=NULL) ? (rtp_session_compute_recv_bandwidth(as)*1e-3) : 0,
1629         (as!=NULL) ? (rtp_session_compute_send_bandwidth(as)*1e-3) : 0,
1630         (vs!=NULL) ? (rtp_session_compute_recv_bandwidth(vs)*1e-3) : 0,
1631         (vs!=NULL) ? (rtp_session_compute_send_bandwidth(vs)*1e-3) : 0);
1632 }
1633
1634 static void linphone_core_disconnected(LinphoneCore *lc, LinphoneCall *call){
1635         char temp[256];
1636         char *from=NULL;
1637         if(call)
1638                 from = linphone_call_get_remote_address_as_string(call);
1639         if (from)
1640         {
1641                 snprintf(temp,sizeof(temp),"Remote end %s seems to have disconnected, the call is going to be closed.",from);
1642                 free(from);
1643         }
1644         else
1645         {
1646                 snprintf(temp,sizeof(temp),"Remote end seems to have disconnected, the call is going to be closed.");
1647         }
1648         if (lc->vtable.display_warning!=NULL)
1649                 lc->vtable.display_warning(lc,temp);
1650         linphone_core_terminate_call(lc,call);
1651 }
1652
1653 void linphone_call_background_tasks(LinphoneCall *call, bool_t one_second_elapsed){
1654         LinphoneCore* lc = call->core;
1655         int disconnect_timeout = linphone_core_get_nortp_timeout(call->core);
1656         bool_t disconnected=FALSE;
1657
1658         if (call->state==LinphoneCallStreamsRunning && one_second_elapsed){
1659                 RtpSession *as=NULL,*vs=NULL;
1660                 float audio_load=0, video_load=0;
1661                 if (call->audiostream!=NULL){
1662                         as=call->audiostream->session;
1663                         if (call->audiostream->ticker)
1664                                 audio_load=ms_ticker_get_average_load(call->audiostream->ticker);
1665                 }
1666                 if (call->videostream!=NULL){
1667                         if (call->videostream->ticker)
1668                                 video_load=ms_ticker_get_average_load(call->videostream->ticker);
1669                         vs=call->videostream->session;
1670                 }
1671                 display_bandwidth(as,vs);
1672                 ms_message("Thread processing load: audio=%f\tvideo=%f",audio_load,video_load);
1673         }
1674 #ifdef VIDEO_ENABLED
1675         if (call->videostream!=NULL) {
1676                 // Beware that the application queue should not depend on treatments fron the
1677                 // mediastreamer queue.
1678                 video_stream_iterate(call->videostream);
1679
1680                 if (call->videostream_app_evq){
1681                         OrtpEvent *ev;
1682                         while (NULL != (ev=ortp_ev_queue_get(call->videostream_app_evq))){
1683                                 OrtpEventType evt=ortp_event_get_type(ev);
1684                                 OrtpEventData *evd=ortp_event_get_data(ev);
1685                                 if (evt == ORTP_EVENT_ZRTP_ENCRYPTION_CHANGED){
1686                                         linphone_call_videostream_encryption_changed(call, evd->info.zrtp_stream_encrypted);
1687                                 } else if (evt == ORTP_EVENT_RTCP_PACKET_RECEIVED) {
1688                                         call->stats[LINPHONE_CALL_STATS_VIDEO].round_trip_delay = rtp_session_get_round_trip_propagation(call->videostream->session);
1689                                         if(call->stats[LINPHONE_CALL_STATS_VIDEO].received_rtcp != NULL)
1690                                                 freemsg(call->stats[LINPHONE_CALL_STATS_VIDEO].received_rtcp);
1691                                         call->stats[LINPHONE_CALL_STATS_VIDEO].received_rtcp = evd->packet;
1692                                         evd->packet = NULL;
1693                                         if (lc->vtable.call_stats_updated)
1694                                                 lc->vtable.call_stats_updated(lc, call, &call->stats[LINPHONE_CALL_STATS_VIDEO]);
1695                                 } else if (evt == ORTP_EVENT_RTCP_PACKET_EMITTED) {
1696                                         memcpy(&call->stats[LINPHONE_CALL_STATS_VIDEO].jitter_stats, rtp_session_get_jitter_stats(call->videostream->session), sizeof(jitter_stats_t));
1697                                         if(call->stats[LINPHONE_CALL_STATS_VIDEO].sent_rtcp != NULL)
1698                                                 freemsg(call->stats[LINPHONE_CALL_STATS_VIDEO].sent_rtcp);
1699                                         call->stats[LINPHONE_CALL_STATS_VIDEO].sent_rtcp = evd->packet;
1700                                         evd->packet = NULL;
1701                                         if (lc->vtable.call_stats_updated)
1702                                                 lc->vtable.call_stats_updated(lc, call, &call->stats[LINPHONE_CALL_STATS_VIDEO]);
1703                                 }
1704                                 ortp_event_destroy(ev);
1705                         }
1706                 }
1707         }
1708 #endif
1709         if (call->audiostream!=NULL) {
1710                 // Beware that the application queue should not depend on treatments fron the
1711                 // mediastreamer queue.
1712                 audio_stream_iterate(call->audiostream);
1713
1714                 if (call->audiostream_app_evq){
1715                         OrtpEvent *ev;
1716                         while (NULL != (ev=ortp_ev_queue_get(call->audiostream_app_evq))){
1717                                 OrtpEventType evt=ortp_event_get_type(ev);
1718                                 OrtpEventData *evd=ortp_event_get_data(ev);
1719                                 if (evt == ORTP_EVENT_ZRTP_ENCRYPTION_CHANGED){
1720                                         linphone_call_audiostream_encryption_changed(call, evd->info.zrtp_stream_encrypted);
1721                                 } else if (evt == ORTP_EVENT_ZRTP_SAS_READY) {
1722                                         linphone_call_audiostream_auth_token_ready(call, evd->info.zrtp_sas.sas, evd->info.zrtp_sas.verified);
1723                                 } else if (evt == ORTP_EVENT_RTCP_PACKET_RECEIVED) {
1724                                         call->stats[LINPHONE_CALL_STATS_AUDIO].round_trip_delay = rtp_session_get_round_trip_propagation(call->audiostream->session);
1725                                         if(call->stats[LINPHONE_CALL_STATS_AUDIO].received_rtcp != NULL)
1726                                                 freemsg(call->stats[LINPHONE_CALL_STATS_AUDIO].received_rtcp);
1727                                         call->stats[LINPHONE_CALL_STATS_AUDIO].received_rtcp = evd->packet;
1728                                         evd->packet = NULL;
1729                                         if (lc->vtable.call_stats_updated)
1730                                                 lc->vtable.call_stats_updated(lc, call, &call->stats[LINPHONE_CALL_STATS_AUDIO]);
1731                                 } else if (evt == ORTP_EVENT_RTCP_PACKET_EMITTED) {
1732                                         memcpy(&call->stats[LINPHONE_CALL_STATS_AUDIO].jitter_stats, rtp_session_get_jitter_stats(call->audiostream->session), sizeof(jitter_stats_t));
1733                                         if(call->stats[LINPHONE_CALL_STATS_AUDIO].sent_rtcp != NULL)
1734                                                 freemsg(call->stats[LINPHONE_CALL_STATS_AUDIO].sent_rtcp);
1735                                         call->stats[LINPHONE_CALL_STATS_AUDIO].sent_rtcp = evd->packet;
1736                                         evd->packet = NULL;
1737                                         if (lc->vtable.call_stats_updated)
1738                                                 lc->vtable.call_stats_updated(lc, call, &call->stats[LINPHONE_CALL_STATS_AUDIO]);
1739                                 }
1740                                 ortp_event_destroy(ev);
1741                         }
1742                 }
1743         }
1744         if (call->state==LinphoneCallStreamsRunning && one_second_elapsed && call->audiostream!=NULL && disconnect_timeout>0 )
1745                 disconnected=!audio_stream_alive(call->audiostream,disconnect_timeout);
1746         if (disconnected)
1747                 linphone_core_disconnected(call->core,call);
1748 }
1749
1750 void linphone_call_log_completed(LinphoneCall *call){
1751         LinphoneCore *lc=call->core;
1752
1753         call->log->duration=time(NULL)-call->start_time;
1754
1755         if (call->log->status==LinphoneCallMissed){
1756                 char *info;
1757                 lc->missed_calls++;
1758                 info=ortp_strdup_printf(ngettext("You have missed %i call.",
1759                                          "You have missed %i calls.", lc->missed_calls),
1760                                 lc->missed_calls);
1761         if (lc->vtable.display_status!=NULL)
1762             lc->vtable.display_status(lc,info);
1763                 ms_free(info);
1764         }
1765         lc->call_logs=ms_list_prepend(lc->call_logs,(void *)call->log);
1766         if (ms_list_size(lc->call_logs)>lc->max_call_logs){
1767                 MSList *elem,*prevelem=NULL;
1768                 /*find the last element*/
1769                 for(elem=lc->call_logs;elem!=NULL;elem=elem->next){
1770                         prevelem=elem;
1771                 }
1772                 elem=prevelem;
1773                 linphone_call_log_destroy((LinphoneCallLog*)elem->data);
1774                 lc->call_logs=ms_list_remove_link(lc->call_logs,elem);
1775         }
1776         if (lc->vtable.call_log_updated!=NULL){
1777                 lc->vtable.call_log_updated(lc,call->log);
1778         }
1779         call_logs_write_to_config_file(lc);
1780 }
1781
1782 LinphoneCallState linphone_call_get_transfer_state(LinphoneCall *call) {
1783         return call->transfer_state;
1784 }
1785
1786 void linphone_call_set_transfer_state(LinphoneCall* call, LinphoneCallState state) {
1787         if (state != call->transfer_state) {
1788                 LinphoneCore* lc = call->core;
1789                 call->transfer_state = state;
1790                 if (lc->vtable.transfer_state_changed)
1791                         lc->vtable.transfer_state_changed(lc, call, state);
1792         }
1793 }
1794