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 ((call->dir == LinphoneCallOutgoing) && (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                 if ((call->dir == LinphoneCallIncoming) && (sal_call_get_remote_media_description(call->op)->streams[i].ice_check_list != NULL)) {
 253                         md->streams[i].ice_check_list = sal_call_get_remote_media_description(call->op)->streams[i].ice_check_list;
 254                 }
 255         }
 256         if ((call->dir == LinphoneCallIncoming) && (md->streams[0].ice_check_list != NULL)) {
 257                 call->ice_session=md->streams[0].ice_check_list->session;
 258         }
 259
 260         linphone_address_destroy(addr);
 261         return md;
 262 }
 263
 264 void update_local_media_description(LinphoneCore *lc, LinphoneCall *call){
 265         SalMediaDescription *md=call->localdesc;
 266         if (md== NULL) {
 267                 call->localdesc = create_local_media_description(lc,call);
 268         } else {
 269                 call->localdesc = _create_local_media_description(lc,call,md->session_id,md->session_ver+1);
 270                 sal_media_description_unref(md);
 271         }
 272 }
 273
 274 SalMediaDescription *create_local_media_description(LinphoneCore *lc, LinphoneCall *call){
 275         unsigned int id=rand() & 0xfff;
 276         return _create_local_media_description(lc,call,id,id);
 277 }
 278
 279 static int find_port_offset(LinphoneCore *lc){
 280         int offset;
 281         MSList *elem;
 282         int audio_port;
 283         bool_t already_used=FALSE;
 284         for(offset=0;offset<100;offset+=2){
 285                 audio_port=linphone_core_get_audio_port (lc)+offset;
 286                 already_used=FALSE;
 287                 for(elem=lc->calls;elem!=NULL;elem=elem->next){
 288                         LinphoneCall *call=(LinphoneCall*)elem->data;
 289                         if (call->audio_port==audio_port) {
 290                                 already_used=TRUE;
 291                                 break;
 292                         }
 293                 }
 294                 if (!already_used) break;
 295         }
 296         if (offset==100){
 297                 ms_error("Could not find any free port !");
 298                 return -1;
 299         }
 300         return offset;
 301 }
 302
 303 static void linphone_call_init_common(LinphoneCall *call, LinphoneAddress *from, LinphoneAddress *to){
 304         int port_offset;
 305         call->magic=linphone_call_magic;
 306         call->refcnt=1;
 307         call->state=LinphoneCallIdle;
 308         call->transfer_state = LinphoneCallIdle;
 309         call->start_time=time(NULL);
 310         call->media_start_time=0;
 311         call->log=linphone_call_log_new(call, from, to);
 312         call->owns_call_log=TRUE;
 313         linphone_core_notify_all_friends(call->core,LinphoneStatusOnThePhone);
 314         port_offset=find_port_offset (call->core);
 315         if (port_offset==-1) return;
 316         call->audio_port=linphone_core_get_audio_port(call->core)+port_offset;
 317         call->video_port=linphone_core_get_video_port(call->core)+port_offset;
 318         linphone_call_init_stats(&call->stats[LINPHONE_CALL_STATS_AUDIO], LINPHONE_CALL_STATS_AUDIO);
 319         linphone_call_init_stats(&call->stats[LINPHONE_CALL_STATS_VIDEO], LINPHONE_CALL_STATS_VIDEO);
 320 }
 321
 322 void linphone_call_init_stats(LinphoneCallStats *stats, int type) {
 323         stats->type = type;
 324         stats->received_rtcp = NULL;
 325         stats->sent_rtcp = NULL;
 326 }
 327
 328 static void discover_mtu(LinphoneCore *lc, const char *remote){
 329         int mtu;
 330         if (lc->net_conf.mtu==0 ){
 331                 /*attempt to discover mtu*/
 332                 mtu=ms_discover_mtu(remote);
 333                 if (mtu>0){
 334                         ms_set_mtu(mtu);
 335                         ms_message("Discovered mtu is %i, RTP payload max size is %i",
 336                                 mtu, ms_get_payload_max_size());
 337                 }
 338         }
 339 }
 340
 341 LinphoneCall * linphone_call_new_outgoing(struct _LinphoneCore *lc, LinphoneAddress *from, LinphoneAddress *to, const LinphoneCallParams *params)
 342 {
 343         LinphoneCall *call=ms_new0(LinphoneCall,1);
 344         call->dir=LinphoneCallOutgoing;
 345         call->op=sal_op_new(lc->sal);
 346         sal_op_set_user_pointer(call->op,call);
 347         call->core=lc;
 348         linphone_core_get_local_ip(lc,linphone_address_get_domain(to),call->localip);
 349         linphone_call_init_common(call,from,to);
 350         call->params=*params;
 351         if (linphone_core_get_firewall_policy(call->core) == LinphonePolicyUseIce) {
 352                 call->ice_session=ice_session_new();
 353                 ice_session_set_role(call->ice_session, IR_Controlling);
 354         }
 355         call->localdesc=create_local_media_description (lc,call);
 356         call->camera_active=params->has_video;
 357         switch (linphone_core_get_firewall_policy(call->core)) {
 358                 case LinphonePolicyUseStun:
 359                         linphone_core_run_stun_tests(call->core,call);
 360                         break;
 361                 case LinphonePolicyUseIce:
 362                         linphone_core_gather_ice_candidates(call->core,call);
 363                         break;
 364                 default:
 365                         break;
 366         }
 367         discover_mtu(lc,linphone_address_get_domain (to));
 368         if (params->referer){
 369                 sal_call_set_referer(call->op,params->referer->op);
 370                 call->referer=linphone_call_ref(params->referer);
 371         }
 372         return call;
 373 }
 374
 375 LinphoneCall * linphone_call_new_incoming(LinphoneCore *lc, LinphoneAddress *from, LinphoneAddress *to, SalOp *op){
 376         LinphoneCall *call=ms_new0(LinphoneCall,1);
 377         char *from_str;
 378
 379         call->dir=LinphoneCallIncoming;
 380         sal_op_set_user_pointer(op,call);
 381         call->op=op;
 382         call->core=lc;
 383
 384         if (lc->sip_conf.ping_with_options){
 385                 /*the following sends an option request back to the caller so that
 386                  we get a chance to discover our nat'd address before answering.*/
 387                 call->ping_op=sal_op_new(lc->sal);
 388                 from_str=linphone_address_as_string_uri_only(from);
 389                 sal_op_set_route(call->ping_op,sal_op_get_network_origin(op));
 390                 sal_op_set_user_pointer(call->ping_op,call);
 391                 sal_ping(call->ping_op,linphone_core_find_best_identity(lc,from,NULL),from_str);
 392                 ms_free(from_str);
 393         }
 394
 395         linphone_address_clean(from);
 396         linphone_core_get_local_ip(lc,linphone_address_get_domain(from),call->localip);
 397         linphone_call_init_common(call, from, to);
 398         linphone_core_init_default_params(lc, &call->params);
 399         call->params.has_video &= !!lc->video_policy.automatically_accept;
 400         call->localdesc=create_local_media_description (lc,call);
 401         call->camera_active=call->params.has_video;
 402         switch (linphone_core_get_firewall_policy(call->core)) {
 403                 case LinphonePolicyUseStun:
 404                         linphone_core_run_stun_tests(call->core,call);
 405                         break;
 406                 case LinphonePolicyUseIce:
 407                         linphone_core_gather_ice_candidates(call->core, call);
 408                         break;
 409                 default:
 410                         break;
 411         }
 412         discover_mtu(lc,linphone_address_get_domain(from));
 413         return call;
 414 }
 415
 416 /* this function is called internally to get rid of a call.
 417  It performs the following tasks:
 418  - remove the call from the internal list of calls
 419  - update the call logs accordingly
 420 */
 421
 422 static void linphone_call_set_terminated(LinphoneCall *call){
 423         LinphoneCore *lc=call->core;
 424
 425         linphone_core_update_allocated_audio_bandwidth(lc);
 426
 427         call->owns_call_log=FALSE;
 428         linphone_call_log_completed(call);
 429
 430
 431         if (call == lc->current_call){
 432                 ms_message("Resetting the current call");
 433                 lc->current_call=NULL;
 434         }
 435
 436         if (linphone_core_del_call(lc,call) != 0){
 437                 ms_error("Could not remove the call from the list !!!");
 438         }
 439
 440         if (ms_list_size(lc->calls)==0)
 441                 linphone_core_notify_all_friends(lc,lc->presence_mode);
 442
 443         linphone_core_conference_check_uninit(lc);
 444         if (call->ringing_beep){
 445                 linphone_core_stop_dtmf(lc);
 446                 call->ringing_beep=FALSE;
 447         }
 448         if (call->referer){
 449                 linphone_call_unref(call->referer);
 450                 call->referer=NULL;
 451         }
 452 }
 453
 454 void linphone_call_fix_call_parameters(LinphoneCall *call){
 455         call->params.has_video=call->current_params.has_video;
 456         call->params.media_encryption=call->current_params.media_encryption;
 457 }
 458
 459 const char *linphone_call_state_to_string(LinphoneCallState cs){
 460         switch (cs){
 461                 case LinphoneCallIdle:
 462                         return "LinphoneCallIdle";
 463                 case LinphoneCallIncomingReceived:
 464                         return "LinphoneCallIncomingReceived";
 465                 case LinphoneCallOutgoingInit:
 466                         return "LinphoneCallOutgoingInit";
 467                 case LinphoneCallOutgoingProgress:
 468                         return "LinphoneCallOutgoingProgress";
 469                 case LinphoneCallOutgoingRinging:
 470                         return "LinphoneCallOutgoingRinging";
 471                 case LinphoneCallOutgoingEarlyMedia:
 472                         return "LinphoneCallOutgoingEarlyMedia";
 473                 case LinphoneCallConnected:
 474                         return "LinphoneCallConnected";
 475                 case LinphoneCallStreamsRunning:
 476                         return "LinphoneCallStreamsRunning";
 477                 case LinphoneCallPausing:
 478                         return "LinphoneCallPausing";
 479                 case LinphoneCallPaused:
 480                         return "LinphoneCallPaused";
 481                 case LinphoneCallResuming:
 482                         return "LinphoneCallResuming";
 483                 case LinphoneCallRefered:
 484                         return "LinphoneCallRefered";
 485                 case LinphoneCallError:
 486                         return "LinphoneCallError";
 487                 case LinphoneCallEnd:
 488                         return "LinphoneCallEnd";
 489                 case LinphoneCallPausedByRemote:
 490                         return "LinphoneCallPausedByRemote";
 491                 case LinphoneCallUpdatedByRemote:
 492                         return "LinphoneCallUpdatedByRemote";
 493                 case LinphoneCallIncomingEarlyMedia:
 494                         return "LinphoneCallIncomingEarlyMedia";
 495                 case LinphoneCallUpdated:
 496                         return "LinphoneCallUpdated";
 497                 case LinphoneCallReleased:
 498                         return "LinphoneCallReleased";
 499         }
 500         return "undefined state";
 501 }
 502
 503 void linphone_call_set_state(LinphoneCall *call, LinphoneCallState cstate, const char *message){
 504         LinphoneCore *lc=call->core;
 505
 506         if (call->state!=cstate){
 507                 if (call->state==LinphoneCallEnd || call->state==LinphoneCallError){
 508                         if (cstate!=LinphoneCallReleased){
 509                                 ms_warning("Spurious call state change from %s to %s, ignored.",linphone_call_state_to_string(call->state),
 510                                    linphone_call_state_to_string(cstate));
 511                                 return;
 512                         }
 513                 }
 514                 ms_message("Call %p: moving from state %s to %s",call,linphone_call_state_to_string(call->state),
 515                            linphone_call_state_to_string(cstate));
 516                 if (cstate!=LinphoneCallRefered){
 517                         /*LinphoneCallRefered is rather an event, not a state.
 518                          Indeed it does not change the state of the call (still paused or running)*/
 519                         call->state=cstate;
 520                 }
 521                 if (cstate==LinphoneCallEnd || cstate==LinphoneCallError){
 522              switch(call->reason){
 523                                 case LinphoneReasonDeclined:
 524                                         call->log->status=LinphoneCallDeclined;
 525                                 case LinphoneReasonNotAnswered:
 526                                         call->log->status=LinphoneCallMissed;
 527                                 break;
 528                                 default:
 529                                 break;
 530                         }
 531                         linphone_call_set_terminated (call);
 532                 }
 533                 if (cstate == LinphoneCallConnected) {
 534                         call->log->status=LinphoneCallSuccess;
 535                         call->media_start_time=time(NULL);
 536                 }
 537
 538                 if (lc->vtable.call_state_changed)
 539                         lc->vtable.call_state_changed(lc,call,cstate,message);
 540                 if (cstate==LinphoneCallReleased){
 541                         if (call->op!=NULL) {
 542                                 /* so that we cannot have anymore upcalls for SAL
 543                                  concerning this call*/
 544                                 sal_op_release(call->op);
 545                                 call->op=NULL;
 546                         }
 547                         linphone_call_unref(call);
 548                 }
 549         }
 550 }
 551
 552 static void linphone_call_destroy(LinphoneCall *obj)
 553 {
 554         if (obj->op!=NULL) {
 555                 sal_op_release(obj->op);
 556                 obj->op=NULL;
 557         }
 558         if (obj->ice_session!=NULL) {
 559                 ice_session_destroy(obj->ice_session);
 560                 obj->ice_session=NULL;
 561         }
 562         if (obj->resultdesc!=NULL) {
 563                 sal_media_description_unref(obj->resultdesc);
 564                 obj->resultdesc=NULL;
 565         }
 566         if (obj->localdesc!=NULL) {
 567                 sal_media_description_unref(obj->localdesc);
 568                 obj->localdesc=NULL;
 569         }
 570         if (obj->ping_op) {
 571                 sal_op_release(obj->ping_op);
 572         }
 573         if (obj->refer_to){
 574                 ms_free(obj->refer_to);
 575         }
 576         if (obj->owns_call_log)
 577                 linphone_call_log_destroy(obj->log);
 578         if (obj->auth_token) {
 579                 ms_free(obj->auth_token);
 580         }
 581
 582         ms_free(obj);
 583 }
 584
 585 /**
 586  * @addtogroup call_control
 587  * @{
 588 **/
 589
 590 /**
 591  * Increments the call 's reference count.
 592  * An application that wishes to retain a pointer to call object
 593  * must use this function to unsure the pointer remains
 594  * valid. Once the application no more needs this pointer,
 595  * it must call linphone_call_unref().
 596 **/
 597 LinphoneCall * linphone_call_ref(LinphoneCall *obj){
 598         obj->refcnt++;
 599         return obj;
 600 }
 601
 602 /**
 603  * Decrements the call object reference count.
 604  * See linphone_call_ref().
 605 **/
 606 void linphone_call_unref(LinphoneCall *obj){
 607         obj->refcnt--;
 608         if (obj->refcnt==0){
 609                 linphone_call_destroy(obj);
 610         }
 611 }
 612
 613 /**
 614  * Returns current parameters associated to the call.
 615 **/
 616 const LinphoneCallParams * linphone_call_get_current_params(const LinphoneCall *call){
 617         return &call->current_params;
 618 }
 619
 620 static bool_t is_video_active(const SalStreamDescription *sd){
 621         return sd->port!=0 && sd->dir!=SalStreamInactive;
 622 }
 623
 624 /**
 625  * Returns call parameters proposed by remote.
 626  *
 627  * This is useful when receiving an incoming call, to know whether the remote party
 628  * supports video, encryption or whatever.
 629 **/
 630 const LinphoneCallParams * linphone_call_get_remote_params(LinphoneCall *call){
 631         LinphoneCallParams *cp=&call->remote_params;
 632         memset(cp,0,sizeof(*cp));
 633         if (call->op){
 634                 SalMediaDescription *md=sal_call_get_remote_media_description(call->op);
 635                 if (md){
 636                         SalStreamDescription *asd,*vsd,*secure_asd,*secure_vsd;
 637
 638                         asd=sal_media_description_find_stream(md,SalProtoRtpAvp,SalAudio);
 639                         vsd=sal_media_description_find_stream(md,SalProtoRtpAvp,SalVideo);
 640                         secure_asd=sal_media_description_find_stream(md,SalProtoRtpSavp,SalAudio);
 641                         secure_vsd=sal_media_description_find_stream(md,SalProtoRtpSavp,SalVideo);
 642                         if (secure_vsd){
 643                                 cp->has_video=is_video_active(secure_vsd);
 644                                 if (secure_asd || asd==NULL)
 645                                         cp->media_encryption=LinphoneMediaEncryptionSRTP;
 646                         }else if (vsd){
 647                                 cp->has_video=is_video_active(vsd);
 648                         }
 649                         return cp;
 650                 }
 651         }
 652         return NULL;
 653 }
 654
 655 /**
 656  * Returns the remote address associated to this call
 657  *
 658 **/
 659 const LinphoneAddress * linphone_call_get_remote_address(const LinphoneCall *call){
 660         return call->dir==LinphoneCallIncoming ? call->log->from : call->log->to;
 661 }
 662
 663 /**
 664  * Returns the remote address associated to this call as a string.
 665  *
 666  * The result string must be freed by user using ms_free().
 667 **/
 668 char *linphone_call_get_remote_address_as_string(const LinphoneCall *call){
 669         return linphone_address_as_string(linphone_call_get_remote_address(call));
 670 }
 671
 672 /**
 673  * Retrieves the call's current state.
 674 **/
 675 LinphoneCallState linphone_call_get_state(const LinphoneCall *call){
 676         return call->state;
 677 }
 678
 679 /**
 680  * Returns the reason for a call termination (either error or normal termination)
 681 **/
 682 LinphoneReason linphone_call_get_reason(const LinphoneCall *call){
 683         return call->reason;
 684 }
 685
 686 /**
 687  * Get the user_pointer in the LinphoneCall
 688  *
 689  * @ingroup call_control
 690  *
 691  * return user_pointer an opaque user pointer that can be retrieved at any time
 692 **/
 693 void *linphone_call_get_user_pointer(LinphoneCall *call)
 694 {
 695         return call->user_pointer;
 696 }
 697
 698 /**
 699  * Set the user_pointer in the LinphoneCall
 700  *
 701  * @ingroup call_control
 702  *
 703  * the user_pointer is an opaque user pointer that can be retrieved at any time in the LinphoneCall
 704 **/
 705 void linphone_call_set_user_pointer(LinphoneCall *call, void *user_pointer)
 706 {
 707         call->user_pointer = user_pointer;
 708 }
 709
 710 /**
 711  * Returns the call log associated to this call.
 712 **/
 713 LinphoneCallLog *linphone_call_get_call_log(const LinphoneCall *call){
 714         return call->log;
 715 }
 716
 717 /**
 718  * Returns the refer-to uri (if the call was transfered).
 719 **/
 720 const char *linphone_call_get_refer_to(const LinphoneCall *call){
 721         return call->refer_to;
 722 }
 723
 724 /**
 725  * Returns direction of the call (incoming or outgoing).
 726 **/
 727 LinphoneCallDir linphone_call_get_dir(const LinphoneCall *call){
 728         return call->log->dir;
 729 }
 730
 731 /**
 732  * Returns the far end's user agent description string, if available.
 733 **/
 734 const char *linphone_call_get_remote_user_agent(LinphoneCall *call){
 735         if (call->op){
 736                 return sal_op_get_remote_ua (call->op);
 737         }
 738         return NULL;
 739 }
 740
 741 /**
 742  * Returns true if this calls has received a transfer that has not been
 743  * executed yet.
 744  * Pending transfers are executed when this call is being paused or closed,
 745  * locally or by remote endpoint.
 746  * If the call is already paused while receiving the transfer request, the
 747  * transfer immediately occurs.
 748 **/
 749 bool_t linphone_call_has_transfer_pending(const LinphoneCall *call){
 750         return call->refer_pending;
 751 }
 752
 753 /**
 754  * Returns call's duration in seconds.
 755 **/
 756 int linphone_call_get_duration(const LinphoneCall *call){
 757         if (call->media_start_time==0) return 0;
 758         return time(NULL)-call->media_start_time;
 759 }
 760
 761 /**
 762  * Returns the call object this call is replacing, if any.
 763  * Call replacement can occur during call transfers.
 764  * By default, the core automatically terminates the replaced call and accept the new one.
 765  * This function allows the application to know whether a new incoming call is a one that replaces another one.
 766 **/
 767 LinphoneCall *linphone_call_get_replaced_call(LinphoneCall *call){
 768         SalOp *op=sal_call_get_replaces(call->op);
 769         if (op){
 770                 return (LinphoneCall*)sal_op_get_user_pointer(op);
 771         }
 772         return NULL;
 773 }
 774
 775 /**
 776  * Indicate whether camera input should be sent to remote end.
 777 **/
 778 void linphone_call_enable_camera (LinphoneCall *call, bool_t enable){
 779 #ifdef VIDEO_ENABLED
 780         if (call->videostream!=NULL && call->videostream->ticker!=NULL){
 781                 LinphoneCore *lc=call->core;
 782                 MSWebCam *nowebcam=get_nowebcam_device();
 783                 if (call->camera_active!=enable && lc->video_conf.device!=nowebcam){
 784                         video_stream_change_camera(call->videostream,
 785                                      enable ? lc->video_conf.device : nowebcam);
 786                 }
 787         }
 788         call->camera_active=enable;
 789 #endif
 790 }
 791
 792 /**
 793  * Take a photo of currently received video and write it into a jpeg file.
 794 **/
 795 int linphone_call_take_video_snapshot(LinphoneCall *call, const char *file){
 796 #ifdef VIDEO_ENABLED
 797         if (call->videostream!=NULL && call->videostream->jpegwriter!=NULL){
 798                 return ms_filter_call_method(call->videostream->jpegwriter,MS_JPEG_WRITER_TAKE_SNAPSHOT,(void*)file);
 799         }
 800         ms_warning("Cannot take snapshot: no currently running video stream on this call.");
 801         return -1;
 802 #endif
 803         return -1;
 804 }
 805
 806 /**
 807  * Returns TRUE if camera pictures are sent to the remote party.
 808 **/
 809 bool_t linphone_call_camera_enabled (const LinphoneCall *call){
 810         return call->camera_active;
 811 }
 812
 813 /**
 814  * Enable video stream.
 815 **/
 816 void linphone_call_params_enable_video(LinphoneCallParams *cp, bool_t enabled){
 817         cp->has_video=enabled;
 818 }
 819
 820 const PayloadType* linphone_call_params_get_used_audio_codec(const LinphoneCallParams *cp) {
 821         return cp->audio_codec;
 822 }
 823
 824 const PayloadType* linphone_call_params_get_used_video_codec(const LinphoneCallParams *cp) {
 825         return cp->video_codec;
 826 }
 827
 828 /**
 829  * Returns whether video is enabled.
 830 **/
 831 bool_t linphone_call_params_video_enabled(const LinphoneCallParams *cp){
 832         return cp->has_video;
 833 }
 834
 835 enum LinphoneMediaEncryption linphone_call_params_get_media_encryption(const LinphoneCallParams *cp) {
 836         return cp->media_encryption;
 837 }
 838
 839 void linphone_call_params_set_media_encryption(LinphoneCallParams *cp, enum LinphoneMediaEncryption e) {
 840         cp->media_encryption = e;
 841 }
 842
 843
 844 /**
 845  * Enable sending of real early media (during outgoing calls).
 846 **/
 847 void linphone_call_params_enable_early_media_sending(LinphoneCallParams *cp, bool_t enabled){
 848         cp->real_early_media=enabled;
 849 }
 850
 851 bool_t linphone_call_params_early_media_sending_enabled(const LinphoneCallParams *cp){
 852         return cp->real_early_media;
 853 }
 854
 855 /**
 856  * Returns true if the call is part of the locally managed conference.
 857 **/
 858 bool_t linphone_call_params_local_conference_mode(const LinphoneCallParams *cp){
 859         return cp->in_conference;
 860 }
 861
 862 /**
 863  * Refine bandwidth settings for this call by setting a bandwidth limit for audio streams.
 864  * As a consequence, codecs whose bitrates are not compatible with this limit won't be used.
 865 **/
 866 void linphone_call_params_set_audio_bandwidth_limit(LinphoneCallParams *cp, int bandwidth){
 867         cp->audio_bw=bandwidth;
 868 }
 869
 870 #ifdef VIDEO_ENABLED
 871 /**
 872  * Request remote side to send us a Video Fast Update.
 873 **/
 874 void linphone_call_send_vfu_request(LinphoneCall *call)
 875 {
 876         if (LinphoneCallStreamsRunning == linphone_call_get_state(call))
 877                 sal_call_send_vfu_request(call->op);
 878 }
 879 #endif
 880
 881 /**
 882  *
 883 **/
 884 LinphoneCallParams * linphone_call_params_copy(const LinphoneCallParams *cp){
 885         LinphoneCallParams *ncp=ms_new0(LinphoneCallParams,1);
 886         memcpy(ncp,cp,sizeof(LinphoneCallParams));
 887         return ncp;
 888 }
 889
 890 /**
 891  *
 892 **/
 893 void linphone_call_params_destroy(LinphoneCallParams *p){
 894         ms_free(p);
 895 }
 896
 897 /**
 898  * @}
 899 **/
 900
 901
 902 #ifdef TEST_EXT_RENDERER
 903 static void rendercb(void *data, const MSPicture *local, const MSPicture *remote){
 904         ms_message("rendercb, local buffer=%p, remote buffer=%p",
 905                    local ? local->planes[0] : NULL, remote? remote->planes[0] : NULL);
 906 }
 907 #endif
 908
 909 #ifdef VIDEO_ENABLED
 910 static void video_stream_event_cb(void *user_pointer, const MSFilter *f, const unsigned int event_id, const void *args){
 911     LinphoneCall* call = (LinphoneCall*) user_pointer;
 912         ms_warning("In linphonecall.c: video_stream_event_cb");
 913         switch (event_id) {
 914                 case MS_VIDEO_DECODER_DECODING_ERRORS:
 915                         ms_warning("Case is MS_VIDEO_DECODER_DECODING_ERRORS");
 916                         linphone_call_send_vfu_request(call);
 917                         break;
 918         case MS_VIDEO_DECODER_FIRST_IMAGE_DECODED:
 919             ms_message("First video frame decoded successfully");
 920             if (call->nextVideoFrameDecoded._func != NULL)
 921                 call->nextVideoFrameDecoded._func(call, call->nextVideoFrameDecoded._user_data);
 922             break;
 923                 default:
 924                         ms_warning("Unhandled event %i", event_id);
 925                         break;
 926         }
 927 }
 928 #endif
 929
 930 void linphone_call_set_next_video_frame_decoded_callback(LinphoneCall *call, LinphoneCallCbFunc cb, void* user_data) {
 931     call->nextVideoFrameDecoded._func = cb;
 932     call->nextVideoFrameDecoded._user_data = user_data;
 933 #ifdef VIDEO_ENABLED
 934     ms_filter_call_method_noarg(call->videostream->decoder, MS_VIDEO_DECODER_RESET_FIRST_IMAGE_NOTIFICATION);
 935 #endif
 936 }
 937
 938 void linphone_call_init_media_streams(LinphoneCall *call){
 939         LinphoneCore *lc=call->core;
 940         SalMediaDescription *md=call->localdesc;
 941         AudioStream *audiostream;
 942
 943         call->audiostream=audiostream=audio_stream_new(md->streams[0].port,linphone_core_ipv6_enabled(lc));
 944         if (linphone_core_echo_limiter_enabled(lc)){
 945                 const char *type=lp_config_get_string(lc->config,"sound","el_type","mic");
 946                 if (strcasecmp(type,"mic")==0)
 947                         audio_stream_enable_echo_limiter(audiostream,ELControlMic);
 948                 else if (strcasecmp(type,"full")==0)
 949                         audio_stream_enable_echo_limiter(audiostream,ELControlFull);
 950         }
 951         audio_stream_enable_gain_control(audiostream,TRUE);
 952         if (linphone_core_echo_cancellation_enabled(lc)){
 953                 int len,delay,framesize;
 954                 const char *statestr=lp_config_get_string(lc->config,"sound","ec_state",NULL);
 955                 len=lp_config_get_int(lc->config,"sound","ec_tail_len",0);
 956                 delay=lp_config_get_int(lc->config,"sound","ec_delay",0);
 957                 framesize=lp_config_get_int(lc->config,"sound","ec_framesize",0);
 958                 audio_stream_set_echo_canceller_params(audiostream,len,delay,framesize);
 959                 if (statestr && audiostream->ec){
 960                         ms_filter_call_method(audiostream->ec,MS_ECHO_CANCELLER_SET_STATE_STRING,(void*)statestr);
 961                 }
 962         }
 963         audio_stream_enable_automatic_gain_control(audiostream,linphone_core_agc_enabled(lc));
 964         {
 965                 int enabled=lp_config_get_int(lc->config,"sound","noisegate",0);
 966                 audio_stream_enable_noise_gate(audiostream,enabled);
 967         }
 968
 969         if (lc->rtptf){
 970                 RtpTransport *artp=lc->rtptf->audio_rtp_func(lc->rtptf->audio_rtp_func_data, call->audio_port);
 971                 RtpTransport *artcp=lc->rtptf->audio_rtcp_func(lc->rtptf->audio_rtcp_func_data, call->audio_port+1);
 972                 rtp_session_set_transports(audiostream->session,artp,artcp);
 973         }
 974         if (linphone_core_get_firewall_policy(lc) == LinphonePolicyUseIce){
 975                 rtp_session_set_pktinfo(audiostream->session,TRUE);
 976                 if (call->dir == LinphoneCallOutgoing) audiostream->ice_check_list = call->localdesc->streams[0].ice_check_list;
 977                 else audiostream->ice_check_list = sal_call_get_remote_media_description(call->op)->streams[0].ice_check_list;
 978                 ice_check_list_register_success_cb(audiostream->ice_check_list, audio_stream_set_remote_from_ice, audiostream);
 979         }
 980
 981         call->audiostream_app_evq = ortp_ev_queue_new();
 982         rtp_session_register_event_queue(audiostream->session,call->audiostream_app_evq);
 983
 984 #ifdef VIDEO_ENABLED
 985
 986         if ((lc->video_conf.display || lc->video_conf.capture) && md->streams[1].port>0){
 987                 int video_recv_buf_size=lp_config_get_int(lc->config,"video","recv_buf_size",0);
 988                 call->videostream=video_stream_new(md->streams[1].port,linphone_core_ipv6_enabled(lc));
 989                 video_stream_enable_display_filter_auto_rotate(call->videostream, lp_config_get_int(lc->config,"video","display_filter_auto_rotate",0));
 990                 if (video_recv_buf_size>0) rtp_session_set_recv_buf_size(call->videostream->session,video_recv_buf_size);
 991
 992                 if( lc->video_conf.displaytype != NULL)
 993                         video_stream_set_display_filter_name(call->videostream,lc->video_conf.displaytype);
 994                 video_stream_set_event_callback(call->videostream,video_stream_event_cb, call);
 995                 if (lc->rtptf){
 996                         RtpTransport *vrtp=lc->rtptf->video_rtp_func(lc->rtptf->video_rtp_func_data, call->video_port);
 997                         RtpTransport *vrtcp=lc->rtptf->video_rtcp_func(lc->rtptf->video_rtcp_func_data, call->video_port+1);
 998                         rtp_session_set_transports(call->videostream->session,vrtp,vrtcp);
 999                 }
1000                 if (linphone_core_get_firewall_policy(lc) == LinphonePolicyUseIce){
1001                         rtp_session_set_pktinfo(call->videostream->session,TRUE);
1002                         if (call->dir == LinphoneCallOutgoing) call->videostream->ice_check_list = call->localdesc->streams[1].ice_check_list;
1003                         else call->videostream->ice_check_list = sal_call_get_remote_media_description(call->op)->streams[1].ice_check_list;
1004                         ice_check_list_register_success_cb(call->videostream->ice_check_list, video_stream_set_remote_from_ice, call->videostream);
1005                 }
1006                 call->videostream_app_evq = ortp_ev_queue_new();
1007                 rtp_session_register_event_queue(call->videostream->session,call->videostream_app_evq);
1008 #ifdef TEST_EXT_RENDERER
1009                 video_stream_set_render_callback(call->videostream,rendercb,NULL);
1010 #endif
1011         }
1012 #else
1013         call->videostream=NULL;
1014 #endif
1015 }
1016
1017
1018 static int dtmf_tab[16]={'0','1','2','3','4','5','6','7','8','9','*','#','A','B','C','D'};
1019
1020 static void linphone_core_dtmf_received(RtpSession* s, int dtmf, void* user_data){
1021         LinphoneCore* lc = (LinphoneCore*)user_data;
1022         if (dtmf<0 || dtmf>15){
1023                 ms_warning("Bad dtmf value %i",dtmf);
1024                 return;
1025         }
1026         if (lc->vtable.dtmf_received != NULL)
1027                 lc->vtable.dtmf_received(lc, linphone_core_get_current_call(lc), dtmf_tab[dtmf]);
1028 }
1029
1030 static void parametrize_equalizer(LinphoneCore *lc, AudioStream *st){
1031         if (st->equalizer){
1032                 MSFilter *f=st->equalizer;
1033                 int enabled=lp_config_get_int(lc->config,"sound","eq_active",0);
1034                 const char *gains=lp_config_get_string(lc->config,"sound","eq_gains",NULL);
1035                 ms_filter_call_method(f,MS_EQUALIZER_SET_ACTIVE,&enabled);
1036                 if (enabled){
1037                         if (gains){
1038                                 do{
1039                                         int bytes;
1040                                         MSEqualizerGain g;
1041                                         if (sscanf(gains,"%f:%f:%f %n",&g.frequency,&g.gain,&g.width,&bytes)==3){
1042                                                 ms_message("Read equalizer gains: %f(~%f) --> %f",g.frequency,g.width,g.gain);
1043                                                 ms_filter_call_method(f,MS_EQUALIZER_SET_GAIN,&g);
1044                                                 gains+=bytes;
1045                                         }else break;
1046                                 }while(1);
1047                         }
1048                 }
1049         }
1050 }
1051
1052 void _post_configure_audio_stream(AudioStream *st, LinphoneCore *lc, bool_t muted){
1053         float mic_gain=lp_config_get_float(lc->config,"sound","mic_gain",1);
1054         float thres = 0;
1055         float recv_gain;
1056         float ng_thres=lp_config_get_float(lc->config,"sound","ng_thres",0.05);
1057         float ng_floorgain=lp_config_get_float(lc->config,"sound","ng_floorgain",0);
1058         int dc_removal=lp_config_get_int(lc->config,"sound","dc_removal",0);
1059
1060         if (!muted)
1061                 audio_stream_set_mic_gain(st,mic_gain);
1062         else
1063                 audio_stream_set_mic_gain(st,0);
1064
1065         recv_gain = lc->sound_conf.soft_play_lev;
1066         if (recv_gain != 0) {
1067                 linphone_core_set_playback_gain_db (lc,recv_gain);
1068         }
1069
1070         if (st->volsend){
1071                 ms_filter_call_method(st->volsend,MS_VOLUME_REMOVE_DC,&dc_removal);
1072                 float speed=lp_config_get_float(lc->config,"sound","el_speed",-1);
1073                 thres=lp_config_get_float(lc->config,"sound","el_thres",-1);
1074                 float force=lp_config_get_float(lc->config,"sound","el_force",-1);
1075                 int sustain=lp_config_get_int(lc->config,"sound","el_sustain",-1);
1076                 float transmit_thres=lp_config_get_float(lc->config,"sound","el_transmit_thres",-1);
1077                 MSFilter *f=NULL;
1078                 f=st->volsend;
1079                 if (speed==-1) speed=0.03;
1080                 if (force==-1) force=25;
1081                 ms_filter_call_method(f,MS_VOLUME_SET_EA_SPEED,&speed);
1082                 ms_filter_call_method(f,MS_VOLUME_SET_EA_FORCE,&force);
1083                 if (thres!=-1)
1084                         ms_filter_call_method(f,MS_VOLUME_SET_EA_THRESHOLD,&thres);
1085                 if (sustain!=-1)
1086                         ms_filter_call_method(f,MS_VOLUME_SET_EA_SUSTAIN,&sustain);
1087                 if (transmit_thres!=-1)
1088                                 ms_filter_call_method(f,MS_VOLUME_SET_EA_TRANSMIT_THRESHOLD,&transmit_thres);
1089
1090                 ms_filter_call_method(st->volsend,MS_VOLUME_SET_NOISE_GATE_THRESHOLD,&ng_thres);
1091                 ms_filter_call_method(st->volsend,MS_VOLUME_SET_NOISE_GATE_FLOORGAIN,&ng_floorgain);
1092         }
1093         if (st->volrecv){
1094                 /* parameters for a limited noise-gate effect, using echo limiter threshold */
1095                 float floorgain = 1/mic_gain;
1096                 int spk_agc=lp_config_get_int(lc->config,"sound","speaker_agc_enabled",0);
1097                 ms_filter_call_method(st->volrecv, MS_VOLUME_ENABLE_AGC, &spk_agc);
1098                 ms_filter_call_method(st->volrecv,MS_VOLUME_SET_NOISE_GATE_THRESHOLD,&ng_thres);
1099                 ms_filter_call_method(st->volrecv,MS_VOLUME_SET_NOISE_GATE_FLOORGAIN,&floorgain);
1100         }
1101         parametrize_equalizer(lc,st);
1102 }
1103
1104 static void post_configure_audio_streams(LinphoneCall*call){
1105         AudioStream *st=call->audiostream;
1106         LinphoneCore *lc=call->core;
1107         _post_configure_audio_stream(st,lc,call->audio_muted);
1108         if (lc->vtable.dtmf_received!=NULL){
1109                 /* replace by our default action*/
1110                 audio_stream_play_received_dtmfs(call->audiostream,FALSE);
1111                 rtp_session_signal_connect(call->audiostream->session,"telephone-event",(RtpCallback)linphone_core_dtmf_received,(unsigned long)lc);
1112         }
1113 }
1114
1115 static RtpProfile *make_profile(LinphoneCall *call, const SalMediaDescription *md, const SalStreamDescription *desc, int *used_pt){
1116         int bw;
1117         const MSList *elem;
1118         RtpProfile *prof=rtp_profile_new("Call profile");
1119         bool_t first=TRUE;
1120         int remote_bw=0;
1121         LinphoneCore *lc=call->core;
1122         int up_ptime=0;
1123         *used_pt=-1;
1124
1125         for(elem=desc->payloads;elem!=NULL;elem=elem->next){
1126                 PayloadType *pt=(PayloadType*)elem->data;
1127                 int number;
1128
1129                 if ((pt->flags & PAYLOAD_TYPE_FLAG_CAN_SEND) && first) {
1130                         if (desc->type==SalAudio){
1131                                 linphone_core_update_allocated_audio_bandwidth_in_call(call,pt);
1132                                 up_ptime=linphone_core_get_upload_ptime(lc);
1133                         }
1134                         *used_pt=payload_type_get_number(pt);
1135                         first=FALSE;
1136                 }
1137                 if (desc->bandwidth>0) remote_bw=desc->bandwidth;
1138                 else if (md->bandwidth>0) {
1139                         /*case where b=AS is given globally, not per stream*/
1140                         remote_bw=md->bandwidth;
1141                         if (desc->type==SalVideo){
1142                                 remote_bw=get_video_bandwidth(remote_bw,call->audio_bw);
1143                         }
1144                 }
1145
1146                 if (desc->type==SalAudio){
1147                                 bw=get_min_bandwidth(call->audio_bw,remote_bw);
1148                 }else bw=get_min_bandwidth(get_video_bandwidth(linphone_core_get_upload_bandwidth (lc),call->audio_bw),remote_bw);
1149                 if (bw>0) pt->normal_bitrate=bw*1000;
1150                 else if (desc->type==SalAudio){
1151                         pt->normal_bitrate=-1;
1152                 }
1153                 if (desc->ptime>0){
1154                         up_ptime=desc->ptime;
1155                 }
1156                 if (up_ptime>0){
1157                         char tmp[40];
1158                         snprintf(tmp,sizeof(tmp),"ptime=%i",up_ptime);
1159                         payload_type_append_send_fmtp(pt,tmp);
1160                 }
1161                 number=payload_type_get_number(pt);
1162                 if (rtp_profile_get_payload(prof,number)!=NULL){
1163                         ms_warning("A payload type with number %i already exists in profile !",number);
1164                 }else
1165                         rtp_profile_set_payload(prof,number,pt);
1166         }
1167         return prof;
1168 }
1169
1170
1171 static void setup_ring_player(LinphoneCore *lc, LinphoneCall *call){
1172         int pause_time=3000;
1173         audio_stream_play(call->audiostream,lc->sound_conf.ringback_tone);
1174         ms_filter_call_method(call->audiostream->soundread,MS_FILE_PLAYER_LOOP,&pause_time);
1175 }
1176
1177 #define LINPHONE_RTCP_SDES_TOOL "Linphone-" LINPHONE_VERSION
1178
1179 static bool_t linphone_call_sound_resources_available(LinphoneCall *call){
1180         LinphoneCore *lc=call->core;
1181         LinphoneCall *current=linphone_core_get_current_call(lc);
1182         return !linphone_core_is_in_conference(lc) &&
1183                 (current==NULL || current==call);
1184 }
1185 static int find_crypto_index_from_tag(const SalSrtpCryptoAlgo crypto[],unsigned char tag) {
1186     int i;
1187     for(i=0; i<SAL_CRYPTO_ALGO_MAX; i++) {
1188         if (crypto[i].tag == tag) {
1189             return i;
1190         }
1191     }
1192     return -1;
1193 }
1194 static void linphone_call_start_audio_stream(LinphoneCall *call, const char *cname, bool_t muted, bool_t send_ringbacktone, bool_t use_arc){
1195         LinphoneCore *lc=call->core;
1196         int jitt_comp=lc->rtp_conf.audio_jitt_comp;
1197         int used_pt=-1;
1198         /* look for savp stream first */
1199         const SalStreamDescription *stream=sal_media_description_find_stream(call->resultdesc,
1200                                                 SalProtoRtpSavp,SalAudio);
1201         /* no savp audio stream, use avp */
1202         if (!stream)
1203                 stream=sal_media_description_find_stream(call->resultdesc,
1204                                                 SalProtoRtpAvp,SalAudio);
1205
1206         if (stream && stream->dir!=SalStreamInactive && stream->port!=0){
1207                 MSSndCard *playcard=lc->sound_conf.lsd_card ?
1208                         lc->sound_conf.lsd_card : lc->sound_conf.play_sndcard;
1209                 MSSndCard *captcard=lc->sound_conf.capt_sndcard;
1210                 const char *playfile=lc->play_file;
1211                 const char *recfile=lc->rec_file;
1212                 call->audio_profile=make_profile(call,call->resultdesc,stream,&used_pt);
1213                 bool_t use_ec;
1214
1215                 if (used_pt!=-1){
1216                         call->current_params.audio_codec = rtp_profile_get_payload(call->audio_profile, used_pt);
1217                         if (playcard==NULL) {
1218                                 ms_warning("No card defined for playback !");
1219                         }
1220                         if (captcard==NULL) {
1221                                 ms_warning("No card defined for capture !");
1222                         }
1223                         /*Replace soundcard filters by inactive file players or recorders
1224                          when placed in recvonly or sendonly mode*/
1225                         if (stream->port==0 || stream->dir==SalStreamRecvOnly){
1226                                 captcard=NULL;
1227                                 playfile=NULL;
1228                         }else if (stream->dir==SalStreamSendOnly){
1229                                 playcard=NULL;
1230                                 captcard=NULL;
1231                                 recfile=NULL;
1232                                 /*And we will eventually play "playfile" if set by the user*/
1233                                 /*playfile=NULL;*/
1234                         }
1235                         if (send_ringbacktone){
1236                                 captcard=NULL;
1237                                 playfile=NULL;/* it is setup later*/
1238                         }
1239                         /*if playfile are supplied don't use soundcards*/
1240                         if (lc->use_files) {
1241                                 captcard=NULL;
1242                                 playcard=NULL;
1243                         }
1244                         if (call->params.in_conference){
1245                                 /* first create the graph without soundcard resources*/
1246                                 captcard=playcard=NULL;
1247                         }
1248                         if (!linphone_call_sound_resources_available(call)){
1249                                 ms_message("Sound resources are used by another call, not using soundcard.");
1250                                 captcard=playcard=NULL;
1251                         }
1252                         use_ec=captcard==NULL ? FALSE : linphone_core_echo_cancellation_enabled(lc);
1253                         if (playcard &&  stream->max_rate>0) ms_snd_card_set_preferred_sample_rate(playcard, stream->max_rate);
1254                         if (captcard &&  stream->max_rate>0) ms_snd_card_set_preferred_sample_rate(captcard, stream->max_rate);
1255                         audio_stream_enable_adaptive_bitrate_control(call->audiostream,use_arc);
1256                         audio_stream_start_full(
1257                                 call->audiostream,
1258                                 call->audio_profile,
1259                                 stream->addr[0]!='\0' ? stream->addr : call->resultdesc->addr,
1260                                 stream->port,
1261                                 linphone_core_rtcp_enabled(lc) ? (stream->port+1) : 0,
1262                                 used_pt,
1263                                 jitt_comp,
1264                                 playfile,
1265                                 recfile,
1266                                 playcard,
1267                                 captcard,
1268                                 use_ec
1269                                 );
1270                         post_configure_audio_streams(call);
1271                         if (muted && !send_ringbacktone){
1272                                 audio_stream_set_mic_gain(call->audiostream,0);
1273                         }
1274                         if (stream->dir==SalStreamSendOnly && playfile!=NULL){
1275                                 int pause_time=500;
1276                                 ms_filter_call_method(call->audiostream->soundread,MS_FILE_PLAYER_LOOP,&pause_time);
1277                         }
1278                         if (send_ringbacktone){
1279                                 setup_ring_player(lc,call);
1280                         }
1281                         audio_stream_set_rtcp_information(call->audiostream, cname, LINPHONE_RTCP_SDES_TOOL);
1282
1283             /* valid local tags are > 0 */
1284                         if (stream->proto == SalProtoRtpSavp) {
1285                 const SalStreamDescription *local_st_desc=sal_media_description_find_stream(call->localdesc,
1286                                                                                             SalProtoRtpSavp,SalAudio);
1287                 int crypto_idx = find_crypto_index_from_tag(local_st_desc->crypto, stream->crypto_local_tag);
1288
1289                 if (crypto_idx >= 0) {
1290                     audio_stream_enable_strp(
1291                                              call->audiostream,
1292                                              stream->crypto[0].algo,
1293                                              local_st_desc->crypto[crypto_idx].master_key,
1294                                              stream->crypto[0].master_key);
1295                     call->audiostream_encrypted=TRUE;
1296                 } else {
1297                     ms_warning("Failed to find local crypto algo with tag: %d", stream->crypto_local_tag);
1298                     call->audiostream_encrypted=FALSE;
1299                 }
1300                         }else call->audiostream_encrypted=FALSE;
1301                         if (call->params.in_conference){
1302                                 /*transform the graph to connect it to the conference filter */
1303                                 bool_t mute=stream->dir==SalStreamRecvOnly;
1304                                 linphone_call_add_to_conf(call, mute);
1305                         }
1306                         call->current_params.in_conference=call->params.in_conference;
1307                 }else ms_warning("No audio stream accepted ?");
1308         }
1309 }
1310
1311 static void linphone_call_start_video_stream(LinphoneCall *call, const char *cname,bool_t all_inputs_muted){
1312 #ifdef VIDEO_ENABLED
1313         LinphoneCore *lc=call->core;
1314         int used_pt=-1;
1315         /* look for savp stream first */
1316         const SalStreamDescription *vstream=sal_media_description_find_stream(call->resultdesc,
1317                                                 SalProtoRtpSavp,SalVideo);
1318         /* no savp audio stream, use avp */
1319         if (!vstream)
1320                 vstream=sal_media_description_find_stream(call->resultdesc,
1321                                                 SalProtoRtpAvp,SalVideo);
1322
1323         /* shutdown preview */
1324         if (lc->previewstream!=NULL) {
1325                 video_preview_stop(lc->previewstream);
1326                 lc->previewstream=NULL;
1327         }
1328
1329         if (vstream!=NULL && vstream->dir!=SalStreamInactive && vstream->port!=0) {
1330                 const char *addr=vstream->addr[0]!='\0' ? vstream->addr : call->resultdesc->addr;
1331                 call->video_profile=make_profile(call,call->resultdesc,vstream,&used_pt);
1332                 if (used_pt!=-1){
1333                         call->current_params.video_codec = rtp_profile_get_payload(call->video_profile, used_pt);
1334                         VideoStreamDir dir=VideoStreamSendRecv;
1335                         MSWebCam *cam=lc->video_conf.device;
1336                         bool_t is_inactive=FALSE;
1337
1338                         call->current_params.has_video=TRUE;
1339
1340                         video_stream_enable_adaptive_bitrate_control(call->videostream,
1341                                                                   linphone_core_adaptive_rate_control_enabled(lc));
1342                         video_stream_set_sent_video_size(call->videostream,linphone_core_get_preferred_video_size(lc));
1343                         video_stream_enable_self_view(call->videostream,lc->video_conf.selfview);
1344                         if (lc->video_window_id!=0)
1345                                 video_stream_set_native_window_id(call->videostream,lc->video_window_id);
1346                         if (lc->preview_window_id!=0)
1347                                 video_stream_set_native_preview_window_id (call->videostream,lc->preview_window_id);
1348                         video_stream_use_preview_video_window (call->videostream,lc->use_preview_window);
1349
1350                         if (vstream->dir==SalStreamSendOnly && lc->video_conf.capture ){
1351                                 cam=get_nowebcam_device();
1352                                 dir=VideoStreamSendOnly;
1353                         }else if (vstream->dir==SalStreamRecvOnly && lc->video_conf.display ){
1354                                 dir=VideoStreamRecvOnly;
1355                         }else if (vstream->dir==SalStreamSendRecv){
1356                                 if (lc->video_conf.display && lc->video_conf.capture)
1357                                         dir=VideoStreamSendRecv;
1358                                 else if (lc->video_conf.display)
1359                                         dir=VideoStreamRecvOnly;
1360                                 else
1361                                         dir=VideoStreamSendOnly;
1362                         }else{
1363                                 ms_warning("video stream is inactive.");
1364                                 /*either inactive or incompatible with local capabilities*/
1365                                 is_inactive=TRUE;
1366                         }
1367                         if (call->camera_active==FALSE || all_inputs_muted){
1368                                 cam=get_nowebcam_device();
1369                         }
1370                         if (!is_inactive){
1371                 call->log->video_enabled = TRUE;
1372                                 video_stream_set_direction (call->videostream, dir);
1373                                 ms_message("%s lc rotation:%d\n", __FUNCTION__, lc->device_rotation);
1374                                 video_stream_set_device_rotation(call->videostream, lc->device_rotation);
1375                                 video_stream_start(call->videostream,
1376                                         call->video_profile, addr, vstream->port,
1377                                         linphone_core_rtcp_enabled(lc) ? (vstream->port+1) : 0,
1378                                         used_pt, lc->rtp_conf.audio_jitt_comp, cam);
1379                                 video_stream_set_rtcp_information(call->videostream, cname,LINPHONE_RTCP_SDES_TOOL);
1380                         }
1381
1382                         if (vstream->proto == SalProtoRtpSavp) {
1383                                 const SalStreamDescription *local_st_desc=sal_media_description_find_stream(call->localdesc,
1384                                                 SalProtoRtpSavp,SalVideo);
1385
1386                                 video_stream_enable_strp(
1387                                         call->videostream,
1388                                         vstream->crypto[0].algo,
1389                                         local_st_desc->crypto[0].master_key,
1390                                         vstream->crypto[0].master_key
1391                                         );
1392                                 call->videostream_encrypted=TRUE;
1393                         }else{
1394                                 call->videostream_encrypted=FALSE;
1395                         }
1396                 }else ms_warning("No video stream accepted.");
1397         }else{
1398                 ms_warning("No valid video stream defined.");
1399         }
1400 #endif
1401 }
1402
1403 void linphone_call_start_media_streams(LinphoneCall *call, bool_t all_inputs_muted, bool_t send_ringbacktone){
1404         LinphoneCore *lc=call->core;
1405
1406         call->current_params.audio_codec = NULL;
1407         call->current_params.video_codec = NULL;
1408
1409         LinphoneAddress *me=linphone_core_get_primary_contact_parsed(lc);
1410         char *cname;
1411         bool_t use_arc=linphone_core_adaptive_rate_control_enabled(lc);
1412 #ifdef VIDEO_ENABLED
1413         const SalStreamDescription *vstream=sal_media_description_find_stream(call->resultdesc,
1414                                                         SalProtoRtpAvp,SalVideo);
1415 #endif
1416
1417         if(call->audiostream == NULL)
1418         {
1419                 ms_fatal("start_media_stream() called without prior init !");
1420                 return;
1421         }
1422         cname=linphone_address_as_string_uri_only(me);
1423
1424 #if defined(VIDEO_ENABLED)
1425         if (vstream!=NULL && vstream->dir!=SalStreamInactive && vstream->payloads!=NULL){
1426                 /*when video is used, do not make adaptive rate control on audio, it is stupid.*/
1427                 use_arc=FALSE;
1428         }
1429 #endif
1430         linphone_call_start_audio_stream(call,cname,all_inputs_muted,send_ringbacktone,use_arc);
1431         call->current_params.has_video=FALSE;
1432         if (call->videostream!=NULL) {
1433                 linphone_call_start_video_stream(call,cname,all_inputs_muted);
1434         }
1435
1436         call->all_muted=all_inputs_muted;
1437         call->playing_ringbacktone=send_ringbacktone;
1438         call->up_bw=linphone_core_get_upload_bandwidth(lc);
1439
1440         if (call->params.media_encryption==LinphoneMediaEncryptionZRTP) {
1441                 OrtpZrtpParams params;
1442                 /*will be set later when zrtp is activated*/
1443                 call->current_params.media_encryption=LinphoneMediaEncryptionNone;
1444
1445                 params.zid_file=lc->zrtp_secrets_cache;
1446                 audio_stream_enable_zrtp(call->audiostream,&params);
1447         }else if (call->params.media_encryption==LinphoneMediaEncryptionSRTP){
1448                 call->current_params.media_encryption=linphone_call_are_all_streams_encrypted(call) ?
1449                         LinphoneMediaEncryptionSRTP : LinphoneMediaEncryptionNone;
1450         }
1451
1452         /*also reflect the change if the "wished" params, in order to avoid to propose SAVP or video again
1453          * further in the call, for example during pause,resume, conferencing reINVITEs*/
1454         linphone_call_fix_call_parameters(call);
1455
1456         goto end;
1457         end:
1458                 ms_free(cname);
1459                 linphone_address_destroy(me);
1460 }
1461
1462 static void linphone_call_log_fill_stats(LinphoneCallLog *log, AudioStream *st){
1463         audio_stream_get_local_rtp_stats (st,&log->local_stats);
1464         log->quality=audio_stream_get_average_quality_rating(st);
1465 }
1466
1467 void linphone_call_stop_media_streams(LinphoneCall *call){
1468         if (call->audiostream!=NULL) {
1469                 rtp_session_unregister_event_queue(call->audiostream->session,call->audiostream_app_evq);
1470                 ortp_ev_queue_flush(call->audiostream_app_evq);
1471                 ortp_ev_queue_destroy(call->audiostream_app_evq);
1472
1473                 if (call->audiostream->ec){
1474                         const char *state_str=NULL;
1475                         ms_filter_call_method(call->audiostream->ec,MS_ECHO_CANCELLER_GET_STATE_STRING,&state_str);
1476                         if (state_str){
1477                                 ms_message("Writing echo canceler state, %i bytes",(int)strlen(state_str));
1478                                 lp_config_set_string(call->core->config,"sound","ec_state",state_str);
1479                         }
1480                 }
1481                 linphone_call_log_fill_stats (call->log,call->audiostream);
1482                 if (call->endpoint){
1483                         linphone_call_remove_from_conf(call);
1484                 }
1485                 if (call->audiostream->ice_check_list) ice_check_list_destroy(call->audiostream->ice_check_list);
1486                 audio_stream_stop(call->audiostream);
1487                 call->audiostream=NULL;
1488         }
1489
1490
1491 #ifdef VIDEO_ENABLED
1492         if (call->videostream!=NULL){
1493                 rtp_session_unregister_event_queue(call->videostream->session,call->videostream_app_evq);
1494                 ortp_ev_queue_flush(call->videostream_app_evq);
1495                 ortp_ev_queue_destroy(call->videostream_app_evq);
1496                 if (call->videostream->ice_check_list) ice_check_list_destroy(call->videostream->ice_check_list);
1497                 video_stream_stop(call->videostream);
1498                 call->videostream=NULL;
1499         }
1500 #endif
1501         ms_event_queue_skip(call->core->msevq);
1502
1503         if (call->audio_profile){
1504                 rtp_profile_clear_all(call->audio_profile);
1505                 rtp_profile_destroy(call->audio_profile);
1506                 call->audio_profile=NULL;
1507         }
1508         if (call->video_profile){
1509                 rtp_profile_clear_all(call->video_profile);
1510                 rtp_profile_destroy(call->video_profile);
1511                 call->video_profile=NULL;
1512         }
1513 }
1514
1515
1516
1517 void linphone_call_enable_echo_cancellation(LinphoneCall *call, bool_t enable) {
1518         if (call!=NULL && call->audiostream!=NULL && call->audiostream->ec){
1519                 bool_t bypass_mode = !enable;
1520                 ms_filter_call_method(call->audiostream->ec,MS_ECHO_CANCELLER_SET_BYPASS_MODE,&bypass_mode);
1521         }
1522 }
1523 bool_t linphone_call_echo_cancellation_enabled(LinphoneCall *call) {
1524         if (call!=NULL && call->audiostream!=NULL && call->audiostream->ec){
1525                 bool_t val;
1526                 ms_filter_call_method(call->audiostream->ec,MS_ECHO_CANCELLER_GET_BYPASS_MODE,&val);
1527                 return !val;
1528         } else {
1529                 return linphone_core_echo_cancellation_enabled(call->core);
1530         }
1531 }
1532
1533 void linphone_call_enable_echo_limiter(LinphoneCall *call, bool_t val){
1534         if (call!=NULL && call->audiostream!=NULL ) {
1535                 if (val) {
1536                 const char *type=lp_config_get_string(call->core->config,"sound","el_type","mic");
1537                 if (strcasecmp(type,"mic")==0)
1538                         audio_stream_enable_echo_limiter(call->audiostream,ELControlMic);
1539                 else if (strcasecmp(type,"full")==0)
1540                         audio_stream_enable_echo_limiter(call->audiostream,ELControlFull);
1541                 } else {
1542                         audio_stream_enable_echo_limiter(call->audiostream,ELInactive);
1543                 }
1544         }
1545 }
1546
1547 bool_t linphone_call_echo_limiter_enabled(const LinphoneCall *call){
1548         if (call!=NULL && call->audiostream!=NULL ){
1549                 return call->audiostream->el_type !=ELInactive ;
1550         } else {
1551                 return linphone_core_echo_limiter_enabled(call->core);
1552         }
1553 }
1554
1555 /**
1556  * @addtogroup call_misc
1557  * @{
1558 **/
1559
1560 /**
1561  * Returns the measured sound volume played locally (received from remote).
1562  * It is expressed in dbm0.
1563 **/
1564 float linphone_call_get_play_volume(LinphoneCall *call){
1565         AudioStream *st=call->audiostream;
1566         if (st && st->volrecv){
1567                 float vol=0;
1568                 ms_filter_call_method(st->volrecv,MS_VOLUME_GET,&vol);
1569                 return vol;
1570
1571         }
1572         return LINPHONE_VOLUME_DB_LOWEST;
1573 }
1574
1575 /**
1576  * Returns the measured sound volume recorded locally (sent to remote).
1577  * It is expressed in dbm0.
1578 **/
1579 float linphone_call_get_record_volume(LinphoneCall *call){
1580         AudioStream *st=call->audiostream;
1581         if (st && st->volsend && !call->audio_muted && call->state==LinphoneCallStreamsRunning){
1582                 float vol=0;
1583                 ms_filter_call_method(st->volsend,MS_VOLUME_GET,&vol);
1584                 return vol;
1585
1586         }
1587         return LINPHONE_VOLUME_DB_LOWEST;
1588 }
1589
1590 /**
1591  * Obtain real-time quality rating of the call
1592  *
1593  * Based on local RTP statistics and RTCP feedback, a quality rating is computed and updated
1594  * during all the duration of the call. This function returns its value at the time of the function call.
1595  * It is expected that the rating is updated at least every 5 seconds or so.
1596  * The rating is a floating point number comprised between 0 and 5.
1597  *
1598  * 4-5 = good quality <br>
1599  * 3-4 = average quality <br>
1600  * 2-3 = poor quality <br>
1601  * 1-2 = very poor quality <br>
1602  * 0-1 = can't be worse, mostly unusable <br>
1603  *
1604  * @returns The function returns -1 if no quality measurement is available, for example if no
1605  * active audio stream exist. Otherwise it returns the quality rating.
1606 **/
1607 float linphone_call_get_current_quality(LinphoneCall *call){
1608         if (call->audiostream){
1609                 return audio_stream_get_quality_rating(call->audiostream);
1610         }
1611         return -1;
1612 }
1613
1614 /**
1615  * Returns call quality averaged over all the duration of the call.
1616  *
1617  * See linphone_call_get_current_quality() for more details about quality measurement.
1618 **/
1619 float linphone_call_get_average_quality(LinphoneCall *call){
1620         if (call->audiostream){
1621                 return audio_stream_get_average_quality_rating(call->audiostream);
1622         }
1623         return -1;
1624 }
1625
1626 /**
1627  * Access last known statistics for audio stream, for a given call.
1628 **/
1629 const LinphoneCallStats *linphone_call_get_audio_stats(const LinphoneCall *call) {
1630         return &call->stats[LINPHONE_CALL_STATS_AUDIO];
1631 }
1632
1633 /**
1634  * Access last known statistics for video stream, for a given call.
1635 **/
1636 const LinphoneCallStats *linphone_call_get_video_stats(const LinphoneCall *call) {
1637         return &call->stats[LINPHONE_CALL_STATS_VIDEO];
1638 }
1639
1640
1641 /**
1642  * @}
1643 **/
1644
1645 static void display_bandwidth(RtpSession *as, RtpSession *vs){
1646         ms_message("bandwidth usage: audio=[d=%.1f,u=%.1f] video=[d=%.1f,u=%.1f] kbit/sec",
1647         (as!=NULL) ? (rtp_session_compute_recv_bandwidth(as)*1e-3) : 0,
1648         (as!=NULL) ? (rtp_session_compute_send_bandwidth(as)*1e-3) : 0,
1649         (vs!=NULL) ? (rtp_session_compute_recv_bandwidth(vs)*1e-3) : 0,
1650         (vs!=NULL) ? (rtp_session_compute_send_bandwidth(vs)*1e-3) : 0);
1651 }
1652
1653 static void linphone_core_disconnected(LinphoneCore *lc, LinphoneCall *call){
1654         char temp[256];
1655         char *from=NULL;
1656         if(call)
1657                 from = linphone_call_get_remote_address_as_string(call);
1658         if (from)
1659         {
1660                 snprintf(temp,sizeof(temp),"Remote end %s seems to have disconnected, the call is going to be closed.",from);
1661                 free(from);
1662         }
1663         else
1664         {
1665                 snprintf(temp,sizeof(temp),"Remote end seems to have disconnected, the call is going to be closed.");
1666         }
1667         if (lc->vtable.display_warning!=NULL)
1668                 lc->vtable.display_warning(lc,temp);
1669         linphone_core_terminate_call(lc,call);
1670 }
1671
1672 void linphone_call_background_tasks(LinphoneCall *call, bool_t one_second_elapsed){
1673         LinphoneCore* lc = call->core;
1674         int disconnect_timeout = linphone_core_get_nortp_timeout(call->core);
1675         bool_t disconnected=FALSE;
1676
1677         if (call->state==LinphoneCallStreamsRunning && one_second_elapsed){
1678                 RtpSession *as=NULL,*vs=NULL;
1679                 float audio_load=0, video_load=0;
1680                 if (call->audiostream!=NULL){
1681                         as=call->audiostream->session;
1682                         if (call->audiostream->ticker)
1683                                 audio_load=ms_ticker_get_average_load(call->audiostream->ticker);
1684                 }
1685                 if (call->videostream!=NULL){
1686                         if (call->videostream->ticker)
1687                                 video_load=ms_ticker_get_average_load(call->videostream->ticker);
1688                         vs=call->videostream->session;
1689                 }
1690                 display_bandwidth(as,vs);
1691                 ms_message("Thread processing load: audio=%f\tvideo=%f",audio_load,video_load);
1692         }
1693 #ifdef VIDEO_ENABLED
1694         if (call->videostream!=NULL) {
1695                 // Beware that the application queue should not depend on treatments fron the
1696                 // mediastreamer queue.
1697                 video_stream_iterate(call->videostream);
1698
1699                 if (call->videostream_app_evq){
1700                         OrtpEvent *ev;
1701                         while (NULL != (ev=ortp_ev_queue_get(call->videostream_app_evq))){
1702                                 OrtpEventType evt=ortp_event_get_type(ev);
1703                                 OrtpEventData *evd=ortp_event_get_data(ev);
1704                                 if (evt == ORTP_EVENT_ZRTP_ENCRYPTION_CHANGED){
1705                                         linphone_call_videostream_encryption_changed(call, evd->info.zrtp_stream_encrypted);
1706                                 } else if (evt == ORTP_EVENT_RTCP_PACKET_RECEIVED) {
1707                                         call->stats[LINPHONE_CALL_STATS_VIDEO].round_trip_delay = rtp_session_get_round_trip_propagation(call->videostream->session);
1708                                         if(call->stats[LINPHONE_CALL_STATS_VIDEO].received_rtcp != NULL)
1709                                                 freemsg(call->stats[LINPHONE_CALL_STATS_VIDEO].received_rtcp);
1710                                         call->stats[LINPHONE_CALL_STATS_VIDEO].received_rtcp = evd->packet;
1711                                         evd->packet = NULL;
1712                                         if (lc->vtable.call_stats_updated)
1713                                                 lc->vtable.call_stats_updated(lc, call, &call->stats[LINPHONE_CALL_STATS_VIDEO]);
1714                                 } else if (evt == ORTP_EVENT_RTCP_PACKET_EMITTED) {
1715                                         memcpy(&call->stats[LINPHONE_CALL_STATS_VIDEO].jitter_stats, rtp_session_get_jitter_stats(call->videostream->session), sizeof(jitter_stats_t));
1716                                         if(call->stats[LINPHONE_CALL_STATS_VIDEO].sent_rtcp != NULL)
1717                                                 freemsg(call->stats[LINPHONE_CALL_STATS_VIDEO].sent_rtcp);
1718                                         call->stats[LINPHONE_CALL_STATS_VIDEO].sent_rtcp = evd->packet;
1719                                         evd->packet = NULL;
1720                                         if (lc->vtable.call_stats_updated)
1721                                                 lc->vtable.call_stats_updated(lc, call, &call->stats[LINPHONE_CALL_STATS_VIDEO]);
1722                                 }
1723                                 ortp_event_destroy(ev);
1724                         }
1725                 }
1726         }
1727 #endif
1728         if (call->audiostream!=NULL) {
1729                 // Beware that the application queue should not depend on treatments fron the
1730                 // mediastreamer queue.
1731                 audio_stream_iterate(call->audiostream);
1732
1733                 if (call->audiostream_app_evq){
1734                         OrtpEvent *ev;
1735                         while (NULL != (ev=ortp_ev_queue_get(call->audiostream_app_evq))){
1736                                 OrtpEventType evt=ortp_event_get_type(ev);
1737                                 OrtpEventData *evd=ortp_event_get_data(ev);
1738                                 if (evt == ORTP_EVENT_ZRTP_ENCRYPTION_CHANGED){
1739                                         linphone_call_audiostream_encryption_changed(call, evd->info.zrtp_stream_encrypted);
1740                                 } else if (evt == ORTP_EVENT_ZRTP_SAS_READY) {
1741                                         linphone_call_audiostream_auth_token_ready(call, evd->info.zrtp_sas.sas, evd->info.zrtp_sas.verified);
1742                                 } else if (evt == ORTP_EVENT_RTCP_PACKET_RECEIVED) {
1743                                         call->stats[LINPHONE_CALL_STATS_AUDIO].round_trip_delay = rtp_session_get_round_trip_propagation(call->audiostream->session);
1744                                         if(call->stats[LINPHONE_CALL_STATS_AUDIO].received_rtcp != NULL)
1745                                                 freemsg(call->stats[LINPHONE_CALL_STATS_AUDIO].received_rtcp);
1746                                         call->stats[LINPHONE_CALL_STATS_AUDIO].received_rtcp = evd->packet;
1747                                         evd->packet = NULL;
1748                                         if (lc->vtable.call_stats_updated)
1749                                                 lc->vtable.call_stats_updated(lc, call, &call->stats[LINPHONE_CALL_STATS_AUDIO]);
1750                                 } else if (evt == ORTP_EVENT_RTCP_PACKET_EMITTED) {
1751                                         memcpy(&call->stats[LINPHONE_CALL_STATS_AUDIO].jitter_stats, rtp_session_get_jitter_stats(call->audiostream->session), sizeof(jitter_stats_t));
1752                                         if(call->stats[LINPHONE_CALL_STATS_AUDIO].sent_rtcp != NULL)
1753                                                 freemsg(call->stats[LINPHONE_CALL_STATS_AUDIO].sent_rtcp);
1754                                         call->stats[LINPHONE_CALL_STATS_AUDIO].sent_rtcp = evd->packet;
1755                                         evd->packet = NULL;
1756                                         if (lc->vtable.call_stats_updated)
1757                                                 lc->vtable.call_stats_updated(lc, call, &call->stats[LINPHONE_CALL_STATS_AUDIO]);
1758                                 }
1759                                 ortp_event_destroy(ev);
1760                         }
1761                 }
1762         }
1763         if (call->state==LinphoneCallStreamsRunning && one_second_elapsed && call->audiostream!=NULL && disconnect_timeout>0 )
1764                 disconnected=!audio_stream_alive(call->audiostream,disconnect_timeout);
1765         if (disconnected)
1766                 linphone_core_disconnected(call->core,call);
1767 }
1768
1769 void linphone_call_log_completed(LinphoneCall *call){
1770         LinphoneCore *lc=call->core;
1771
1772         call->log->duration=time(NULL)-call->start_time;
1773
1774         if (call->log->status==LinphoneCallMissed){
1775                 char *info;
1776                 lc->missed_calls++;
1777                 info=ortp_strdup_printf(ngettext("You have missed %i call.",
1778                                          "You have missed %i calls.", lc->missed_calls),
1779                                 lc->missed_calls);
1780         if (lc->vtable.display_status!=NULL)
1781             lc->vtable.display_status(lc,info);
1782                 ms_free(info);
1783         }
1784         lc->call_logs=ms_list_prepend(lc->call_logs,(void *)call->log);
1785         if (ms_list_size(lc->call_logs)>lc->max_call_logs){
1786                 MSList *elem,*prevelem=NULL;
1787                 /*find the last element*/
1788                 for(elem=lc->call_logs;elem!=NULL;elem=elem->next){
1789                         prevelem=elem;
1790                 }
1791                 elem=prevelem;
1792                 linphone_call_log_destroy((LinphoneCallLog*)elem->data);
1793                 lc->call_logs=ms_list_remove_link(lc->call_logs,elem);
1794         }
1795         if (lc->vtable.call_log_updated!=NULL){
1796                 lc->vtable.call_log_updated(lc,call->log);
1797         }
1798         call_logs_write_to_config_file(lc);
1799 }
1800
1801 LinphoneCallState linphone_call_get_transfer_state(LinphoneCall *call) {
1802         return call->transfer_state;
1803 }
1804
1805 void linphone_call_set_transfer_state(LinphoneCall* call, LinphoneCallState state) {
1806         if (state != call->transfer_state) {
1807                 LinphoneCore* lc = call->core;
1808                 call->transfer_state = state;
1809                 if (lc->vtable.transfer_state_changed)
1810                         lc->vtable.transfer_state_changed(lc, call, state);
1811         }
1812 }
1813