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