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         IceSession *ice_session=sal_op_get_ice_session(call->op);
 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].rtp_addr,call->localip,sizeof(md->streams[0].rtp_addr));
 215         strncpy(md->streams[0].rtcp_addr,call->localip,sizeof(md->streams[0].rtcp_addr));
 216         md->streams[0].rtp_port=call->audio_port;
 217         md->streams[0].rtcp_port=call->audio_port+1;
 218         md->streams[0].proto=(call->params.media_encryption == LinphoneMediaEncryptionSRTP) ?
 219                 SalProtoRtpSavp : SalProtoRtpAvp;
 220         md->streams[0].type=SalAudio;
 221         md->streams[0].ptime=lc->net_conf.down_ptime;
 222         l=make_codec_list(lc,lc->codecs_conf.audio_codecs,call->params.audio_bw,&md->streams[0].max_rate);
 223         pt=payload_type_clone(rtp_profile_get_payload_from_mime(&av_profile,"telephone-event"));
 224         l=ms_list_append(l,pt);
 225         md->streams[0].payloads=l;
 226
 227
 228
 229         if (call->params.has_video){
 230                 md->nstreams++;
 231                 md->streams[1].rtp_port=call->video_port;
 232                 md->streams[1].rtcp_port=call->video_port+1;
 233                 md->streams[1].proto=md->streams[0].proto;
 234                 md->streams[1].type=SalVideo;
 235                 l=make_codec_list(lc,lc->codecs_conf.video_codecs,0,NULL);
 236                 md->streams[1].payloads=l;
 237         }
 238
 239         for(i=0; i<md->nstreams; i++) {
 240                 if (md->streams[i].proto == SalProtoRtpSavp) {
 241                         md->streams[i].crypto[0].tag = 1;
 242                         md->streams[i].crypto[0].algo = AES_128_SHA1_80;
 243                         if (!generate_b64_crypto_key(30, md->streams[i].crypto[0].master_key))
 244                                 md->streams[i].crypto[0].algo = 0;
 245                         md->streams[i].crypto[1].tag = 2;
 246                         md->streams[i].crypto[1].algo = AES_128_SHA1_32;
 247                         if (!generate_b64_crypto_key(30, md->streams[i].crypto[1].master_key))
 248                                 md->streams[i].crypto[1].algo = 0;
 249                         md->streams[i].crypto[2].algo = 0;
 250                 }
 251                 if ((call->dir == LinphoneCallOutgoing) && (linphone_core_get_firewall_policy(call->core) == LinphonePolicyUseIce) && (ice_session != NULL)){
 252                         ice_session_add_check_list(ice_session, ice_check_list_new());
 253                 }
 254         }
 255
 256         linphone_address_destroy(addr);
 257         return md;
 258 }
 259
 260 void update_local_media_description(LinphoneCore *lc, LinphoneCall *call){
 261         SalMediaDescription *md=call->localdesc;
 262         if (md== NULL) {
 263                 call->localdesc = create_local_media_description(lc,call);
 264         } else {
 265                 call->localdesc = _create_local_media_description(lc,call,md->session_id,md->session_ver+1);
 266                 sal_media_description_unref(md);
 267         }
 268 }
 269
 270 SalMediaDescription *create_local_media_description(LinphoneCore *lc, LinphoneCall *call){
 271         unsigned int id=rand() & 0xfff;
 272         return _create_local_media_description(lc,call,id,id);
 273 }
 274
 275 static int find_port_offset(LinphoneCore *lc){
 276         int offset;
 277         MSList *elem;
 278         int audio_port;
 279         bool_t already_used=FALSE;
 280         for(offset=0;offset<100;offset+=2){
 281                 audio_port=linphone_core_get_audio_port (lc)+offset;
 282                 already_used=FALSE;
 283                 for(elem=lc->calls;elem!=NULL;elem=elem->next){
 284                         LinphoneCall *call=(LinphoneCall*)elem->data;
 285                         if (call->audio_port==audio_port) {
 286                                 already_used=TRUE;
 287                                 break;
 288                         }
 289                 }
 290                 if (!already_used) break;
 291         }
 292         if (offset==100){
 293                 ms_error("Could not find any free port !");
 294                 return -1;
 295         }
 296         return offset;
 297 }
 298
 299 static void linphone_call_init_common(LinphoneCall *call, LinphoneAddress *from, LinphoneAddress *to){
 300         int port_offset;
 301         call->magic=linphone_call_magic;
 302         call->refcnt=1;
 303         call->state=LinphoneCallIdle;
 304         call->transfer_state = LinphoneCallIdle;
 305         call->start_time=time(NULL);
 306         call->media_start_time=0;
 307         call->log=linphone_call_log_new(call, from, to);
 308         call->owns_call_log=TRUE;
 309         linphone_core_notify_all_friends(call->core,LinphoneStatusOnThePhone);
 310         port_offset=find_port_offset (call->core);
 311         if (port_offset==-1) return;
 312         call->audio_port=linphone_core_get_audio_port(call->core)+port_offset;
 313         call->video_port=linphone_core_get_video_port(call->core)+port_offset;
 314         linphone_call_init_stats(&call->stats[LINPHONE_CALL_STATS_AUDIO], LINPHONE_CALL_STATS_AUDIO);
 315         linphone_call_init_stats(&call->stats[LINPHONE_CALL_STATS_VIDEO], LINPHONE_CALL_STATS_VIDEO);
 316 }
 317
 318 void linphone_call_init_stats(LinphoneCallStats *stats, int type) {
 319         stats->type = type;
 320         stats->received_rtcp = NULL;
 321         stats->sent_rtcp = NULL;
 322 }
 323
 324 static void discover_mtu(LinphoneCore *lc, const char *remote){
 325         int mtu;
 326         if (lc->net_conf.mtu==0 ){
 327                 /*attempt to discover mtu*/
 328                 mtu=ms_discover_mtu(remote);
 329                 if (mtu>0){
 330                         ms_set_mtu(mtu);
 331                         ms_message("Discovered mtu is %i, RTP payload max size is %i",
 332                                 mtu, ms_get_payload_max_size());
 333                 }
 334         }
 335 }
 336
 337 LinphoneCall * linphone_call_new_outgoing(struct _LinphoneCore *lc, LinphoneAddress *from, LinphoneAddress *to, const LinphoneCallParams *params)
 338 {
 339         LinphoneCall *call=ms_new0(LinphoneCall,1);
 340         call->dir=LinphoneCallOutgoing;
 341         call->op=sal_op_new(lc->sal);
 342         sal_op_set_user_pointer(call->op,call);
 343         call->core=lc;
 344         linphone_core_get_local_ip(lc,linphone_address_get_domain(to),call->localip);
 345         linphone_call_init_common(call,from,to);
 346         call->params=*params;
 347         if (linphone_core_get_firewall_policy(call->core) == LinphonePolicyUseIce) {
 348                 sal_op_set_ice_session(call->op, ice_session_new());
 349                 ice_session_set_role(sal_op_get_ice_session(call->op), IR_Controlling);
 350         }
 351         call->localdesc=create_local_media_description (lc,call);
 352         call->camera_active=params->has_video;
 353         if (linphone_core_get_firewall_policy(call->core) == LinphonePolicyUseStun) {
 354                 linphone_core_run_stun_tests(call->core,call);
 355         }
 356         discover_mtu(lc,linphone_address_get_domain (to));
 357         if (params->referer){
 358                 sal_call_set_referer(call->op,params->referer->op);
 359                 call->referer=linphone_call_ref(params->referer);
 360         }
 361         return call;
 362 }
 363
 364 LinphoneCall * linphone_call_new_incoming(LinphoneCore *lc, LinphoneAddress *from, LinphoneAddress *to, SalOp *op){
 365         LinphoneCall *call=ms_new0(LinphoneCall,1);
 366         char *from_str;
 367
 368         call->dir=LinphoneCallIncoming;
 369         sal_op_set_user_pointer(op,call);
 370         call->op=op;
 371         call->core=lc;
 372
 373         if (lc->sip_conf.ping_with_options){
 374                 /*the following sends an option request back to the caller so that
 375                  we get a chance to discover our nat'd address before answering.*/
 376                 call->ping_op=sal_op_new(lc->sal);
 377                 from_str=linphone_address_as_string_uri_only(from);
 378                 sal_op_set_route(call->ping_op,sal_op_get_network_origin(op));
 379                 sal_op_set_user_pointer(call->ping_op,call);
 380                 sal_ping(call->ping_op,linphone_core_find_best_identity(lc,from,NULL),from_str);
 381                 ms_free(from_str);
 382         }
 383
 384         linphone_address_clean(from);
 385         linphone_core_get_local_ip(lc,linphone_address_get_domain(from),call->localip);
 386         linphone_call_init_common(call, from, to);
 387         linphone_core_init_default_params(lc, &call->params);
 388         call->params.has_video &= !!lc->video_policy.automatically_accept;
 389         call->localdesc=create_local_media_description (lc,call);
 390         call->camera_active=call->params.has_video;
 391         switch (linphone_core_get_firewall_policy(call->core)) {
 392                 case LinphonePolicyUseIce:
 393                         linphone_call_init_media_streams(call);
 394                         linphone_call_start_media_streams_for_ice_gathering(call);
 395                         if (linphone_core_gather_ice_candidates(call->core,call)<0) {
 396                                 /* Ice candidates gathering failed, proceed with the call anyway. */
 397                                 ice_session_destroy(sal_op_get_ice_session(call->op));
 398                                 sal_op_set_ice_session(call->op, NULL);
 399                                 linphone_call_stop_media_streams(call);
 400                         }
 401                         break;
 402                 case LinphonePolicyUseStun:
 403                         linphone_core_run_stun_tests(call->core,call);
 404                         /* No break to also destroy ice session in this case. */
 405                 default:
 406                         if (sal_op_get_ice_session(call->op) != NULL) {
 407                                 ice_session_destroy(sal_op_get_ice_session(call->op));
 408                                 sal_op_set_ice_session(call->op, NULL);
 409                         }
 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->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->rtp_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         IceSession *ice_session = sal_op_get_ice_session(call->op);
 939
 940         call->audiostream=audiostream=audio_stream_new(md->streams[0].rtp_port,md->streams[0].rtcp_port,linphone_core_ipv6_enabled(lc));
 941         if (linphone_core_echo_limiter_enabled(lc)){
 942                 const char *type=lp_config_get_string(lc->config,"sound","el_type","mic");
 943                 if (strcasecmp(type,"mic")==0)
 944                         audio_stream_enable_echo_limiter(audiostream,ELControlMic);
 945                 else if (strcasecmp(type,"full")==0)
 946                         audio_stream_enable_echo_limiter(audiostream,ELControlFull);
 947         }
 948         audio_stream_enable_gain_control(audiostream,TRUE);
 949         if (linphone_core_echo_cancellation_enabled(lc)){
 950                 int len,delay,framesize;
 951                 const char *statestr=lp_config_get_string(lc->config,"sound","ec_state",NULL);
 952                 len=lp_config_get_int(lc->config,"sound","ec_tail_len",0);
 953                 delay=lp_config_get_int(lc->config,"sound","ec_delay",0);
 954                 framesize=lp_config_get_int(lc->config,"sound","ec_framesize",0);
 955                 audio_stream_set_echo_canceller_params(audiostream,len,delay,framesize);
 956                 if (statestr && audiostream->ec){
 957                         ms_filter_call_method(audiostream->ec,MS_ECHO_CANCELLER_SET_STATE_STRING,(void*)statestr);
 958                 }
 959         }
 960         audio_stream_enable_automatic_gain_control(audiostream,linphone_core_agc_enabled(lc));
 961         {
 962                 int enabled=lp_config_get_int(lc->config,"sound","noisegate",0);
 963                 audio_stream_enable_noise_gate(audiostream,enabled);
 964         }
 965
 966         if (lc->rtptf){
 967                 RtpTransport *artp=lc->rtptf->audio_rtp_func(lc->rtptf->audio_rtp_func_data, call->audio_port);
 968                 RtpTransport *artcp=lc->rtptf->audio_rtcp_func(lc->rtptf->audio_rtcp_func_data, call->audio_port+1);
 969                 rtp_session_set_transports(audiostream->session,artp,artcp);
 970         }
 971         if ((linphone_core_get_firewall_policy(lc) == LinphonePolicyUseIce) && (ice_session != NULL)){
 972                 rtp_session_set_pktinfo(audiostream->session, TRUE);
 973                 audiostream->ice_check_list = ice_session_check_list(ice_session, 0);
 974                 ice_check_list_set_rtp_session(audiostream->ice_check_list, audiostream->session);
 975         }
 976
 977         call->audiostream_app_evq = ortp_ev_queue_new();
 978         rtp_session_register_event_queue(audiostream->session,call->audiostream_app_evq);
 979
 980 #ifdef VIDEO_ENABLED
 981
 982         if ((lc->video_conf.display || lc->video_conf.capture) && md->streams[1].rtp_port>0){
 983                 int video_recv_buf_size=lp_config_get_int(lc->config,"video","recv_buf_size",0);
 984                 call->videostream=video_stream_new(md->streams[1].rtp_port,md->streams[1].rtcp_port,linphone_core_ipv6_enabled(lc));
 985                 video_stream_enable_display_filter_auto_rotate(call->videostream, lp_config_get_int(lc->config,"video","display_filter_auto_rotate",0));
 986                 if (video_recv_buf_size>0) rtp_session_set_recv_buf_size(call->videostream->session,video_recv_buf_size);
 987
 988                 if( lc->video_conf.displaytype != NULL)
 989                         video_stream_set_display_filter_name(call->videostream,lc->video_conf.displaytype);
 990                 video_stream_set_event_callback(call->videostream,video_stream_event_cb, call);
 991                 if (lc->rtptf){
 992                         RtpTransport *vrtp=lc->rtptf->video_rtp_func(lc->rtptf->video_rtp_func_data, call->video_port);
 993                         RtpTransport *vrtcp=lc->rtptf->video_rtcp_func(lc->rtptf->video_rtcp_func_data, call->video_port+1);
 994                         rtp_session_set_transports(call->videostream->session,vrtp,vrtcp);
 995                 }
 996                 if ((linphone_core_get_firewall_policy(lc) == LinphonePolicyUseIce) && (ice_session != NULL)){
 997                         rtp_session_set_pktinfo(call->videostream->session, TRUE);
 998                         call->videostream->ice_check_list = ice_session_check_list(ice_session, 1);
 999                         ice_check_list_set_rtp_session(call->videostream->ice_check_list, call->videostream->session);
1000                 }
1001                 call->videostream_app_evq = ortp_ev_queue_new();
1002                 rtp_session_register_event_queue(call->videostream->session,call->videostream_app_evq);
1003 #ifdef TEST_EXT_RENDERER
1004                 video_stream_set_render_callback(call->videostream,rendercb,NULL);
1005 #endif
1006         }
1007 #else
1008         call->videostream=NULL;
1009 #endif
1010 }
1011
1012
1013 static int dtmf_tab[16]={'0','1','2','3','4','5','6','7','8','9','*','#','A','B','C','D'};
1014
1015 static void linphone_core_dtmf_received(RtpSession* s, int dtmf, void* user_data){
1016         LinphoneCore* lc = (LinphoneCore*)user_data;
1017         if (dtmf<0 || dtmf>15){
1018                 ms_warning("Bad dtmf value %i",dtmf);
1019                 return;
1020         }
1021         if (lc->vtable.dtmf_received != NULL)
1022                 lc->vtable.dtmf_received(lc, linphone_core_get_current_call(lc), dtmf_tab[dtmf]);
1023 }
1024
1025 static void parametrize_equalizer(LinphoneCore *lc, AudioStream *st){
1026         if (st->equalizer){
1027                 MSFilter *f=st->equalizer;
1028                 int enabled=lp_config_get_int(lc->config,"sound","eq_active",0);
1029                 const char *gains=lp_config_get_string(lc->config,"sound","eq_gains",NULL);
1030                 ms_filter_call_method(f,MS_EQUALIZER_SET_ACTIVE,&enabled);
1031                 if (enabled){
1032                         if (gains){
1033                                 do{
1034                                         int bytes;
1035                                         MSEqualizerGain g;
1036                                         if (sscanf(gains,"%f:%f:%f %n",&g.frequency,&g.gain,&g.width,&bytes)==3){
1037                                                 ms_message("Read equalizer gains: %f(~%f) --> %f",g.frequency,g.width,g.gain);
1038                                                 ms_filter_call_method(f,MS_EQUALIZER_SET_GAIN,&g);
1039                                                 gains+=bytes;
1040                                         }else break;
1041                                 }while(1);
1042                         }
1043                 }
1044         }
1045 }
1046
1047 void _post_configure_audio_stream(AudioStream *st, LinphoneCore *lc, bool_t muted){
1048         float mic_gain=lp_config_get_float(lc->config,"sound","mic_gain",1);
1049         float thres = 0;
1050         float recv_gain;
1051         float ng_thres=lp_config_get_float(lc->config,"sound","ng_thres",0.05);
1052         float ng_floorgain=lp_config_get_float(lc->config,"sound","ng_floorgain",0);
1053         int dc_removal=lp_config_get_int(lc->config,"sound","dc_removal",0);
1054
1055         if (!muted)
1056                 audio_stream_set_mic_gain(st,mic_gain);
1057         else
1058                 audio_stream_set_mic_gain(st,0);
1059
1060         recv_gain = lc->sound_conf.soft_play_lev;
1061         if (recv_gain != 0) {
1062                 linphone_core_set_playback_gain_db (lc,recv_gain);
1063         }
1064
1065         if (st->volsend){
1066                 ms_filter_call_method(st->volsend,MS_VOLUME_REMOVE_DC,&dc_removal);
1067                 float speed=lp_config_get_float(lc->config,"sound","el_speed",-1);
1068                 thres=lp_config_get_float(lc->config,"sound","el_thres",-1);
1069                 float force=lp_config_get_float(lc->config,"sound","el_force",-1);
1070                 int sustain=lp_config_get_int(lc->config,"sound","el_sustain",-1);
1071                 float transmit_thres=lp_config_get_float(lc->config,"sound","el_transmit_thres",-1);
1072                 MSFilter *f=NULL;
1073                 f=st->volsend;
1074                 if (speed==-1) speed=0.03;
1075                 if (force==-1) force=25;
1076                 ms_filter_call_method(f,MS_VOLUME_SET_EA_SPEED,&speed);
1077                 ms_filter_call_method(f,MS_VOLUME_SET_EA_FORCE,&force);
1078                 if (thres!=-1)
1079                         ms_filter_call_method(f,MS_VOLUME_SET_EA_THRESHOLD,&thres);
1080                 if (sustain!=-1)
1081                         ms_filter_call_method(f,MS_VOLUME_SET_EA_SUSTAIN,&sustain);
1082                 if (transmit_thres!=-1)
1083                                 ms_filter_call_method(f,MS_VOLUME_SET_EA_TRANSMIT_THRESHOLD,&transmit_thres);
1084
1085                 ms_filter_call_method(st->volsend,MS_VOLUME_SET_NOISE_GATE_THRESHOLD,&ng_thres);
1086                 ms_filter_call_method(st->volsend,MS_VOLUME_SET_NOISE_GATE_FLOORGAIN,&ng_floorgain);
1087         }
1088         if (st->volrecv){
1089                 /* parameters for a limited noise-gate effect, using echo limiter threshold */
1090                 float floorgain = 1/mic_gain;
1091                 int spk_agc=lp_config_get_int(lc->config,"sound","speaker_agc_enabled",0);
1092                 ms_filter_call_method(st->volrecv, MS_VOLUME_ENABLE_AGC, &spk_agc);
1093                 ms_filter_call_method(st->volrecv,MS_VOLUME_SET_NOISE_GATE_THRESHOLD,&ng_thres);
1094                 ms_filter_call_method(st->volrecv,MS_VOLUME_SET_NOISE_GATE_FLOORGAIN,&floorgain);
1095         }
1096         parametrize_equalizer(lc,st);
1097 }
1098
1099 static void post_configure_audio_streams(LinphoneCall*call){
1100         AudioStream *st=call->audiostream;
1101         LinphoneCore *lc=call->core;
1102         _post_configure_audio_stream(st,lc,call->audio_muted);
1103         if (lc->vtable.dtmf_received!=NULL){
1104                 /* replace by our default action*/
1105                 audio_stream_play_received_dtmfs(call->audiostream,FALSE);
1106                 rtp_session_signal_connect(call->audiostream->session,"telephone-event",(RtpCallback)linphone_core_dtmf_received,(unsigned long)lc);
1107         }
1108 }
1109
1110 static RtpProfile *make_profile(LinphoneCall *call, const SalMediaDescription *md, const SalStreamDescription *desc, int *used_pt){
1111         int bw;
1112         const MSList *elem;
1113         RtpProfile *prof=rtp_profile_new("Call profile");
1114         bool_t first=TRUE;
1115         int remote_bw=0;
1116         LinphoneCore *lc=call->core;
1117         int up_ptime=0;
1118         *used_pt=-1;
1119
1120         for(elem=desc->payloads;elem!=NULL;elem=elem->next){
1121                 PayloadType *pt=(PayloadType*)elem->data;
1122                 int number;
1123
1124                 if ((pt->flags & PAYLOAD_TYPE_FLAG_CAN_SEND) && first) {
1125                         if (desc->type==SalAudio){
1126                                 linphone_core_update_allocated_audio_bandwidth_in_call(call,pt);
1127                                 up_ptime=linphone_core_get_upload_ptime(lc);
1128                         }
1129                         *used_pt=payload_type_get_number(pt);
1130                         first=FALSE;
1131                 }
1132                 if (desc->bandwidth>0) remote_bw=desc->bandwidth;
1133                 else if (md->bandwidth>0) {
1134                         /*case where b=AS is given globally, not per stream*/
1135                         remote_bw=md->bandwidth;
1136                         if (desc->type==SalVideo){
1137                                 remote_bw=get_video_bandwidth(remote_bw,call->audio_bw);
1138                         }
1139                 }
1140
1141                 if (desc->type==SalAudio){
1142                                 bw=get_min_bandwidth(call->audio_bw,remote_bw);
1143                 }else bw=get_min_bandwidth(get_video_bandwidth(linphone_core_get_upload_bandwidth (lc),call->audio_bw),remote_bw);
1144                 if (bw>0) pt->normal_bitrate=bw*1000;
1145                 else if (desc->type==SalAudio){
1146                         pt->normal_bitrate=-1;
1147                 }
1148                 if (desc->ptime>0){
1149                         up_ptime=desc->ptime;
1150                 }
1151                 if (up_ptime>0){
1152                         char tmp[40];
1153                         snprintf(tmp,sizeof(tmp),"ptime=%i",up_ptime);
1154                         payload_type_append_send_fmtp(pt,tmp);
1155                 }
1156                 number=payload_type_get_number(pt);
1157                 if (rtp_profile_get_payload(prof,number)!=NULL){
1158                         ms_warning("A payload type with number %i already exists in profile !",number);
1159                 }else
1160                         rtp_profile_set_payload(prof,number,pt);
1161         }
1162         return prof;
1163 }
1164
1165
1166 static void setup_ring_player(LinphoneCore *lc, LinphoneCall *call){
1167         int pause_time=3000;
1168         audio_stream_play(call->audiostream,lc->sound_conf.ringback_tone);
1169         ms_filter_call_method(call->audiostream->soundread,MS_FILE_PLAYER_LOOP,&pause_time);
1170 }
1171
1172 #define LINPHONE_RTCP_SDES_TOOL "Linphone-" LINPHONE_VERSION
1173
1174 static bool_t linphone_call_sound_resources_available(LinphoneCall *call){
1175         LinphoneCore *lc=call->core;
1176         LinphoneCall *current=linphone_core_get_current_call(lc);
1177         return !linphone_core_is_in_conference(lc) &&
1178                 (current==NULL || current==call);
1179 }
1180 static int find_crypto_index_from_tag(const SalSrtpCryptoAlgo crypto[],unsigned char tag) {
1181     int i;
1182     for(i=0; i<SAL_CRYPTO_ALGO_MAX; i++) {
1183         if (crypto[i].tag == tag) {
1184             return i;
1185         }
1186     }
1187     return -1;
1188 }
1189 static void linphone_call_start_audio_stream(LinphoneCall *call, const char *cname, bool_t muted, bool_t send_ringbacktone, bool_t use_arc){
1190         LinphoneCore *lc=call->core;
1191         int jitt_comp=lc->rtp_conf.audio_jitt_comp;
1192         int used_pt=-1;
1193         /* look for savp stream first */
1194         const SalStreamDescription *stream=sal_media_description_find_stream(call->resultdesc,
1195                                                 SalProtoRtpSavp,SalAudio);
1196         /* no savp audio stream, use avp */
1197         if (!stream)
1198                 stream=sal_media_description_find_stream(call->resultdesc,
1199                                                 SalProtoRtpAvp,SalAudio);
1200
1201         if (stream && stream->dir!=SalStreamInactive && stream->rtp_port!=0){
1202                 MSSndCard *playcard=lc->sound_conf.lsd_card ?
1203                         lc->sound_conf.lsd_card : lc->sound_conf.play_sndcard;
1204                 MSSndCard *captcard=lc->sound_conf.capt_sndcard;
1205                 const char *playfile=lc->play_file;
1206                 const char *recfile=lc->rec_file;
1207                 call->audio_profile=make_profile(call,call->resultdesc,stream,&used_pt);
1208                 bool_t use_ec;
1209
1210                 if (used_pt!=-1){
1211                         call->current_params.audio_codec = rtp_profile_get_payload(call->audio_profile, used_pt);
1212                         if (playcard==NULL) {
1213                                 ms_warning("No card defined for playback !");
1214                         }
1215                         if (captcard==NULL) {
1216                                 ms_warning("No card defined for capture !");
1217                         }
1218                         /*Replace soundcard filters by inactive file players or recorders
1219                          when placed in recvonly or sendonly mode*/
1220                         if (stream->rtp_port==0 || stream->dir==SalStreamRecvOnly){
1221                                 captcard=NULL;
1222                                 playfile=NULL;
1223                         }else if (stream->dir==SalStreamSendOnly){
1224                                 playcard=NULL;
1225                                 captcard=NULL;
1226                                 recfile=NULL;
1227                                 /*And we will eventually play "playfile" if set by the user*/
1228                                 /*playfile=NULL;*/
1229                         }
1230                         if (send_ringbacktone){
1231                                 captcard=NULL;
1232                                 playfile=NULL;/* it is setup later*/
1233                         }
1234                         /*if playfile are supplied don't use soundcards*/
1235                         if (lc->use_files) {
1236                                 captcard=NULL;
1237                                 playcard=NULL;
1238                         }
1239                         if (call->params.in_conference){
1240                                 /* first create the graph without soundcard resources*/
1241                                 captcard=playcard=NULL;
1242                         }
1243                         if (!linphone_call_sound_resources_available(call)){
1244                                 ms_message("Sound resources are used by another call, not using soundcard.");
1245                                 captcard=playcard=NULL;
1246                         }
1247                         use_ec=captcard==NULL ? FALSE : linphone_core_echo_cancellation_enabled(lc);
1248                         if (playcard &&  stream->max_rate>0) ms_snd_card_set_preferred_sample_rate(playcard, stream->max_rate);
1249                         if (captcard &&  stream->max_rate>0) ms_snd_card_set_preferred_sample_rate(captcard, stream->max_rate);
1250                         audio_stream_enable_adaptive_bitrate_control(call->audiostream,use_arc);
1251                         audio_stream_start_full(
1252                                 call->audiostream,
1253                                 call->audio_profile,
1254                                 stream->rtp_addr[0]!='\0' ? stream->rtp_addr : call->resultdesc->addr,
1255                                 stream->rtp_port,
1256                                 stream->rtcp_addr[0]!='\0' ? stream->rtcp_addr : call->resultdesc->addr,
1257                                 linphone_core_rtcp_enabled(lc) ? (stream->rtcp_port) : 0,
1258                                 used_pt,
1259                                 jitt_comp,
1260                                 playfile,
1261                                 recfile,
1262                                 playcard,
1263                                 captcard,
1264                                 use_ec
1265                                 );
1266                         post_configure_audio_streams(call);
1267                         if (muted && !send_ringbacktone){
1268                                 audio_stream_set_mic_gain(call->audiostream,0);
1269                         }
1270                         if (stream->dir==SalStreamSendOnly && playfile!=NULL){
1271                                 int pause_time=500;
1272                                 ms_filter_call_method(call->audiostream->soundread,MS_FILE_PLAYER_LOOP,&pause_time);
1273                         }
1274                         if (send_ringbacktone){
1275                                 setup_ring_player(lc,call);
1276                         }
1277                         audio_stream_set_rtcp_information(call->audiostream, cname, LINPHONE_RTCP_SDES_TOOL);
1278
1279             /* valid local tags are > 0 */
1280                         if (stream->proto == SalProtoRtpSavp) {
1281                 const SalStreamDescription *local_st_desc=sal_media_description_find_stream(call->localdesc,
1282                                                                                             SalProtoRtpSavp,SalAudio);
1283                 int crypto_idx = find_crypto_index_from_tag(local_st_desc->crypto, stream->crypto_local_tag);
1284
1285                 if (crypto_idx >= 0) {
1286                     audio_stream_enable_strp(
1287                                              call->audiostream,
1288                                              stream->crypto[0].algo,
1289                                              local_st_desc->crypto[crypto_idx].master_key,
1290                                              stream->crypto[0].master_key);
1291                     call->audiostream_encrypted=TRUE;
1292                 } else {
1293                     ms_warning("Failed to find local crypto algo with tag: %d", stream->crypto_local_tag);
1294                     call->audiostream_encrypted=FALSE;
1295                 }
1296                         }else call->audiostream_encrypted=FALSE;
1297                         if (call->params.in_conference){
1298                                 /*transform the graph to connect it to the conference filter */
1299                                 bool_t mute=stream->dir==SalStreamRecvOnly;
1300                                 linphone_call_add_to_conf(call, mute);
1301                         }
1302                         call->current_params.in_conference=call->params.in_conference;
1303                 }else ms_warning("No audio stream accepted ?");
1304         }
1305 }
1306
1307 static void linphone_call_start_video_stream(LinphoneCall *call, const char *cname,bool_t all_inputs_muted){
1308 #ifdef VIDEO_ENABLED
1309         LinphoneCore *lc=call->core;
1310         int used_pt=-1;
1311         /* look for savp stream first */
1312         const SalStreamDescription *vstream=sal_media_description_find_stream(call->resultdesc,
1313                                                 SalProtoRtpSavp,SalVideo);
1314         /* no savp audio stream, use avp */
1315         if (!vstream)
1316                 vstream=sal_media_description_find_stream(call->resultdesc,
1317                                                 SalProtoRtpAvp,SalVideo);
1318
1319         /* shutdown preview */
1320         if (lc->previewstream!=NULL) {
1321                 video_preview_stop(lc->previewstream);
1322                 lc->previewstream=NULL;
1323         }
1324
1325         if (vstream!=NULL && vstream->dir!=SalStreamInactive && vstream->rtp_port!=0) {
1326                 const char *rtp_addr=vstream->rtp_addr[0]!='\0' ? vstream->rtp_addr : call->resultdesc->addr;
1327                 const char *rtcp_addr=vstream->rtcp_addr[0]!='\0' ? vstream->rtcp_addr : call->resultdesc->addr;
1328                 call->video_profile=make_profile(call,call->resultdesc,vstream,&used_pt);
1329                 if (used_pt!=-1){
1330                         call->current_params.video_codec = rtp_profile_get_payload(call->video_profile, used_pt);
1331                         VideoStreamDir dir=VideoStreamSendRecv;
1332                         MSWebCam *cam=lc->video_conf.device;
1333                         bool_t is_inactive=FALSE;
1334
1335                         call->current_params.has_video=TRUE;
1336
1337                         video_stream_enable_adaptive_bitrate_control(call->videostream,
1338                                                                   linphone_core_adaptive_rate_control_enabled(lc));
1339                         video_stream_set_sent_video_size(call->videostream,linphone_core_get_preferred_video_size(lc));
1340                         video_stream_enable_self_view(call->videostream,lc->video_conf.selfview);
1341                         if (lc->video_window_id!=0)
1342                                 video_stream_set_native_window_id(call->videostream,lc->video_window_id);
1343                         if (lc->preview_window_id!=0)
1344                                 video_stream_set_native_preview_window_id (call->videostream,lc->preview_window_id);
1345                         video_stream_use_preview_video_window (call->videostream,lc->use_preview_window);
1346
1347                         if (vstream->dir==SalStreamSendOnly && lc->video_conf.capture ){
1348                                 cam=get_nowebcam_device();
1349                                 dir=VideoStreamSendOnly;
1350                         }else if (vstream->dir==SalStreamRecvOnly && lc->video_conf.display ){
1351                                 dir=VideoStreamRecvOnly;
1352                         }else if (vstream->dir==SalStreamSendRecv){
1353                                 if (lc->video_conf.display && lc->video_conf.capture)
1354                                         dir=VideoStreamSendRecv;
1355                                 else if (lc->video_conf.display)
1356                                         dir=VideoStreamRecvOnly;
1357                                 else
1358                                         dir=VideoStreamSendOnly;
1359                         }else{
1360                                 ms_warning("video stream is inactive.");
1361                                 /*either inactive or incompatible with local capabilities*/
1362                                 is_inactive=TRUE;
1363                         }
1364                         if (call->camera_active==FALSE || all_inputs_muted){
1365                                 cam=get_nowebcam_device();
1366                         }
1367                         if (!is_inactive){
1368                 call->log->video_enabled = TRUE;
1369                                 video_stream_set_direction (call->videostream, dir);
1370                                 ms_message("%s lc rotation:%d\n", __FUNCTION__, lc->device_rotation);
1371                                 video_stream_set_device_rotation(call->videostream, lc->device_rotation);
1372                                 video_stream_start(call->videostream,
1373                                         call->video_profile, rtp_addr, vstream->rtp_port,
1374                                         rtcp_addr, linphone_core_rtcp_enabled(lc) ? (vstream->rtcp_port) : 0,
1375                                         used_pt, lc->rtp_conf.audio_jitt_comp, cam);
1376                                 video_stream_set_rtcp_information(call->videostream, cname,LINPHONE_RTCP_SDES_TOOL);
1377                         }
1378
1379                         if (vstream->proto == SalProtoRtpSavp) {
1380                                 const SalStreamDescription *local_st_desc=sal_media_description_find_stream(call->localdesc,
1381                                                 SalProtoRtpSavp,SalVideo);
1382
1383                                 video_stream_enable_strp(
1384                                         call->videostream,
1385                                         vstream->crypto[0].algo,
1386                                         local_st_desc->crypto[0].master_key,
1387                                         vstream->crypto[0].master_key
1388                                         );
1389                                 call->videostream_encrypted=TRUE;
1390                         }else{
1391                                 call->videostream_encrypted=FALSE;
1392                         }
1393                 }else ms_warning("No video stream accepted.");
1394         }else{
1395                 ms_warning("No valid video stream defined.");
1396         }
1397 #endif
1398 }
1399
1400 void linphone_call_start_media_streams(LinphoneCall *call, bool_t all_inputs_muted, bool_t send_ringbacktone){
1401         LinphoneCore *lc=call->core;
1402
1403         call->current_params.audio_codec = NULL;
1404         call->current_params.video_codec = NULL;
1405
1406         LinphoneAddress *me=linphone_core_get_primary_contact_parsed(lc);
1407         char *cname;
1408         bool_t use_arc=linphone_core_adaptive_rate_control_enabled(lc);
1409 #ifdef VIDEO_ENABLED
1410         const SalStreamDescription *vstream=sal_media_description_find_stream(call->resultdesc,
1411                                                         SalProtoRtpAvp,SalVideo);
1412 #endif
1413
1414         if(call->audiostream == NULL)
1415         {
1416                 ms_fatal("start_media_stream() called without prior init !");
1417                 return;
1418         }
1419         cname=linphone_address_as_string_uri_only(me);
1420
1421 #if defined(VIDEO_ENABLED)
1422         if (vstream!=NULL && vstream->dir!=SalStreamInactive && vstream->payloads!=NULL){
1423                 /*when video is used, do not make adaptive rate control on audio, it is stupid.*/
1424                 use_arc=FALSE;
1425         }
1426 #endif
1427         linphone_call_start_audio_stream(call,cname,all_inputs_muted,send_ringbacktone,use_arc);
1428         call->current_params.has_video=FALSE;
1429         if (call->videostream!=NULL) {
1430                 linphone_call_start_video_stream(call,cname,all_inputs_muted);
1431         }
1432
1433         call->all_muted=all_inputs_muted;
1434         call->playing_ringbacktone=send_ringbacktone;
1435         call->up_bw=linphone_core_get_upload_bandwidth(lc);
1436
1437         if (call->params.media_encryption==LinphoneMediaEncryptionZRTP) {
1438                 OrtpZrtpParams params;
1439                 /*will be set later when zrtp is activated*/
1440                 call->current_params.media_encryption=LinphoneMediaEncryptionNone;
1441
1442                 params.zid_file=lc->zrtp_secrets_cache;
1443                 audio_stream_enable_zrtp(call->audiostream,&params);
1444         }else if (call->params.media_encryption==LinphoneMediaEncryptionSRTP){
1445                 call->current_params.media_encryption=linphone_call_are_all_streams_encrypted(call) ?
1446                         LinphoneMediaEncryptionSRTP : LinphoneMediaEncryptionNone;
1447         }
1448
1449         /*also reflect the change if the "wished" params, in order to avoid to propose SAVP or video again
1450          * further in the call, for example during pause,resume, conferencing reINVITEs*/
1451         linphone_call_fix_call_parameters(call);
1452         if ((sal_op_get_ice_session(call->op) != NULL) && (ice_session_state(sal_op_get_ice_session(call->op)) != IS_Completed)) {
1453                 ice_session_start_connectivity_checks(sal_op_get_ice_session(call->op));
1454         }
1455
1456         goto end;
1457         end:
1458                 ms_free(cname);
1459                 linphone_address_destroy(me);
1460 }
1461
1462 void linphone_call_start_media_streams_for_ice_gathering(LinphoneCall *call){
1463         audio_stream_start_ice_gathering(call->audiostream);
1464         if (call->videostream) {
1465                 video_stream_start_ice_gathering(call->videostream);
1466         }
1467 }
1468
1469 static void linphone_call_log_fill_stats(LinphoneCallLog *log, AudioStream *st){
1470         audio_stream_get_local_rtp_stats (st,&log->local_stats);
1471         log->quality=audio_stream_get_average_quality_rating(st);
1472 }
1473
1474 void linphone_call_stop_media_streams(LinphoneCall *call){
1475         if (call->audiostream!=NULL) {
1476                 rtp_session_unregister_event_queue(call->audiostream->session,call->audiostream_app_evq);
1477                 ortp_ev_queue_flush(call->audiostream_app_evq);
1478                 ortp_ev_queue_destroy(call->audiostream_app_evq);
1479                 call->audiostream_app_evq=NULL;
1480
1481                 if (call->audiostream->ec){
1482                         const char *state_str=NULL;
1483                         ms_filter_call_method(call->audiostream->ec,MS_ECHO_CANCELLER_GET_STATE_STRING,&state_str);
1484                         if (state_str){
1485                                 ms_message("Writing echo canceler state, %i bytes",(int)strlen(state_str));
1486                                 lp_config_set_string(call->core->config,"sound","ec_state",state_str);
1487                         }
1488                 }
1489                 linphone_call_log_fill_stats (call->log,call->audiostream);
1490                 if (call->endpoint){
1491                         linphone_call_remove_from_conf(call);
1492                 }
1493                 audio_stream_stop(call->audiostream);
1494                 call->audiostream=NULL;
1495         }
1496
1497
1498 #ifdef VIDEO_ENABLED
1499         if (call->videostream!=NULL){
1500                 rtp_session_unregister_event_queue(call->videostream->session,call->videostream_app_evq);
1501                 ortp_ev_queue_flush(call->videostream_app_evq);
1502                 ortp_ev_queue_destroy(call->videostream_app_evq);
1503                 video_stream_stop(call->videostream);
1504                 call->videostream=NULL;
1505         }
1506 #endif
1507         ms_event_queue_skip(call->core->msevq);
1508
1509         if (call->audio_profile){
1510                 rtp_profile_clear_all(call->audio_profile);
1511                 rtp_profile_destroy(call->audio_profile);
1512                 call->audio_profile=NULL;
1513         }
1514         if (call->video_profile){
1515                 rtp_profile_clear_all(call->video_profile);
1516                 rtp_profile_destroy(call->video_profile);
1517                 call->video_profile=NULL;
1518         }
1519 }
1520
1521
1522
1523 void linphone_call_enable_echo_cancellation(LinphoneCall *call, bool_t enable) {
1524         if (call!=NULL && call->audiostream!=NULL && call->audiostream->ec){
1525                 bool_t bypass_mode = !enable;
1526                 ms_filter_call_method(call->audiostream->ec,MS_ECHO_CANCELLER_SET_BYPASS_MODE,&bypass_mode);
1527         }
1528 }
1529 bool_t linphone_call_echo_cancellation_enabled(LinphoneCall *call) {
1530         if (call!=NULL && call->audiostream!=NULL && call->audiostream->ec){
1531                 bool_t val;
1532                 ms_filter_call_method(call->audiostream->ec,MS_ECHO_CANCELLER_GET_BYPASS_MODE,&val);
1533                 return !val;
1534         } else {
1535                 return linphone_core_echo_cancellation_enabled(call->core);
1536         }
1537 }
1538
1539 void linphone_call_enable_echo_limiter(LinphoneCall *call, bool_t val){
1540         if (call!=NULL && call->audiostream!=NULL ) {
1541                 if (val) {
1542                 const char *type=lp_config_get_string(call->core->config,"sound","el_type","mic");
1543                 if (strcasecmp(type,"mic")==0)
1544                         audio_stream_enable_echo_limiter(call->audiostream,ELControlMic);
1545                 else if (strcasecmp(type,"full")==0)
1546                         audio_stream_enable_echo_limiter(call->audiostream,ELControlFull);
1547                 } else {
1548                         audio_stream_enable_echo_limiter(call->audiostream,ELInactive);
1549                 }
1550         }
1551 }
1552
1553 bool_t linphone_call_echo_limiter_enabled(const LinphoneCall *call){
1554         if (call!=NULL && call->audiostream!=NULL ){
1555                 return call->audiostream->el_type !=ELInactive ;
1556         } else {
1557                 return linphone_core_echo_limiter_enabled(call->core);
1558         }
1559 }
1560
1561 /**
1562  * @addtogroup call_misc
1563  * @{
1564 **/
1565
1566 /**
1567  * Returns the measured sound volume played locally (received from remote).
1568  * It is expressed in dbm0.
1569 **/
1570 float linphone_call_get_play_volume(LinphoneCall *call){
1571         AudioStream *st=call->audiostream;
1572         if (st && st->volrecv){
1573                 float vol=0;
1574                 ms_filter_call_method(st->volrecv,MS_VOLUME_GET,&vol);
1575                 return vol;
1576
1577         }
1578         return LINPHONE_VOLUME_DB_LOWEST;
1579 }
1580
1581 /**
1582  * Returns the measured sound volume recorded locally (sent to remote).
1583  * It is expressed in dbm0.
1584 **/
1585 float linphone_call_get_record_volume(LinphoneCall *call){
1586         AudioStream *st=call->audiostream;
1587         if (st && st->volsend && !call->audio_muted && call->state==LinphoneCallStreamsRunning){
1588                 float vol=0;
1589                 ms_filter_call_method(st->volsend,MS_VOLUME_GET,&vol);
1590                 return vol;
1591
1592         }
1593         return LINPHONE_VOLUME_DB_LOWEST;
1594 }
1595
1596 /**
1597  * Obtain real-time quality rating of the call
1598  *
1599  * Based on local RTP statistics and RTCP feedback, a quality rating is computed and updated
1600  * during all the duration of the call. This function returns its value at the time of the function call.
1601  * It is expected that the rating is updated at least every 5 seconds or so.
1602  * The rating is a floating point number comprised between 0 and 5.
1603  *
1604  * 4-5 = good quality <br>
1605  * 3-4 = average quality <br>
1606  * 2-3 = poor quality <br>
1607  * 1-2 = very poor quality <br>
1608  * 0-1 = can't be worse, mostly unusable <br>
1609  *
1610  * @returns The function returns -1 if no quality measurement is available, for example if no
1611  * active audio stream exist. Otherwise it returns the quality rating.
1612 **/
1613 float linphone_call_get_current_quality(LinphoneCall *call){
1614         if (call->audiostream){
1615                 return audio_stream_get_quality_rating(call->audiostream);
1616         }
1617         return -1;
1618 }
1619
1620 /**
1621  * Returns call quality averaged over all the duration of the call.
1622  *
1623  * See linphone_call_get_current_quality() for more details about quality measurement.
1624 **/
1625 float linphone_call_get_average_quality(LinphoneCall *call){
1626         if (call->audiostream){
1627                 return audio_stream_get_average_quality_rating(call->audiostream);
1628         }
1629         return -1;
1630 }
1631
1632 /**
1633  * Access last known statistics for audio stream, for a given call.
1634 **/
1635 const LinphoneCallStats *linphone_call_get_audio_stats(const LinphoneCall *call) {
1636         return &call->stats[LINPHONE_CALL_STATS_AUDIO];
1637 }
1638
1639 /**
1640  * Access last known statistics for video stream, for a given call.
1641 **/
1642 const LinphoneCallStats *linphone_call_get_video_stats(const LinphoneCall *call) {
1643         return &call->stats[LINPHONE_CALL_STATS_VIDEO];
1644 }
1645
1646
1647 /**
1648  * @}
1649 **/
1650
1651 static void display_bandwidth(RtpSession *as, RtpSession *vs){
1652         ms_message("bandwidth usage: audio=[d=%.1f,u=%.1f] video=[d=%.1f,u=%.1f] kbit/sec",
1653         (as!=NULL) ? (rtp_session_compute_recv_bandwidth(as)*1e-3) : 0,
1654         (as!=NULL) ? (rtp_session_compute_send_bandwidth(as)*1e-3) : 0,
1655         (vs!=NULL) ? (rtp_session_compute_recv_bandwidth(vs)*1e-3) : 0,
1656         (vs!=NULL) ? (rtp_session_compute_send_bandwidth(vs)*1e-3) : 0);
1657 }
1658
1659 static void linphone_core_disconnected(LinphoneCore *lc, LinphoneCall *call){
1660         char temp[256];
1661         char *from=NULL;
1662         if(call)
1663                 from = linphone_call_get_remote_address_as_string(call);
1664         if (from)
1665         {
1666                 snprintf(temp,sizeof(temp),"Remote end %s seems to have disconnected, the call is going to be closed.",from);
1667                 free(from);
1668         }
1669         else
1670         {
1671                 snprintf(temp,sizeof(temp),"Remote end seems to have disconnected, the call is going to be closed.");
1672         }
1673         if (lc->vtable.display_warning!=NULL)
1674                 lc->vtable.display_warning(lc,temp);
1675         linphone_core_terminate_call(lc,call);
1676 }
1677
1678 void linphone_call_background_tasks(LinphoneCall *call, bool_t one_second_elapsed){
1679         LinphoneCore* lc = call->core;
1680         int disconnect_timeout = linphone_core_get_nortp_timeout(call->core);
1681         bool_t disconnected=FALSE;
1682
1683         if (call->state==LinphoneCallStreamsRunning && one_second_elapsed){
1684                 RtpSession *as=NULL,*vs=NULL;
1685                 float audio_load=0, video_load=0;
1686                 if (call->audiostream!=NULL){
1687                         as=call->audiostream->session;
1688                         if (call->audiostream->ticker)
1689                                 audio_load=ms_ticker_get_average_load(call->audiostream->ticker);
1690                 }
1691                 if (call->videostream!=NULL){
1692                         if (call->videostream->ticker)
1693                                 video_load=ms_ticker_get_average_load(call->videostream->ticker);
1694                         vs=call->videostream->session;
1695                 }
1696                 display_bandwidth(as,vs);
1697                 ms_message("Thread processing load: audio=%f\tvideo=%f",audio_load,video_load);
1698         }
1699 #ifdef VIDEO_ENABLED
1700         if (call->videostream!=NULL) {
1701                 OrtpEvent *ev;
1702
1703                 // Beware that the application queue should not depend on treatments fron the
1704                 // mediastreamer queue.
1705                 video_stream_iterate(call->videostream);
1706
1707                 while (call->videostream_app_evq && (NULL != (ev=ortp_ev_queue_get(call->videostream_app_evq)))){
1708                         OrtpEventType evt=ortp_event_get_type(ev);
1709                         OrtpEventData *evd=ortp_event_get_data(ev);
1710                         if (evt == ORTP_EVENT_ZRTP_ENCRYPTION_CHANGED){
1711                                 linphone_call_videostream_encryption_changed(call, evd->info.zrtp_stream_encrypted);
1712                         } else if (evt == ORTP_EVENT_RTCP_PACKET_RECEIVED) {
1713                                 call->stats[LINPHONE_CALL_STATS_VIDEO].round_trip_delay = rtp_session_get_round_trip_propagation(call->videostream->session);
1714                                 if(call->stats[LINPHONE_CALL_STATS_VIDEO].received_rtcp != NULL)
1715                                         freemsg(call->stats[LINPHONE_CALL_STATS_VIDEO].received_rtcp);
1716                                 call->stats[LINPHONE_CALL_STATS_VIDEO].received_rtcp = evd->packet;
1717                                 evd->packet = NULL;
1718                                 if (lc->vtable.call_stats_updated)
1719                                         lc->vtable.call_stats_updated(lc, call, &call->stats[LINPHONE_CALL_STATS_VIDEO]);
1720                         } else if (evt == ORTP_EVENT_RTCP_PACKET_EMITTED) {
1721                                 memcpy(&call->stats[LINPHONE_CALL_STATS_VIDEO].jitter_stats, rtp_session_get_jitter_stats(call->videostream->session), sizeof(jitter_stats_t));
1722                                 if(call->stats[LINPHONE_CALL_STATS_VIDEO].sent_rtcp != NULL)
1723                                         freemsg(call->stats[LINPHONE_CALL_STATS_VIDEO].sent_rtcp);
1724                                 call->stats[LINPHONE_CALL_STATS_VIDEO].sent_rtcp = evd->packet;
1725                                 evd->packet = NULL;
1726                                 if (lc->vtable.call_stats_updated)
1727                                         lc->vtable.call_stats_updated(lc, call, &call->stats[LINPHONE_CALL_STATS_VIDEO]);
1728                         } else if (evt == ORTP_EVENT_ICE_SESSION_PROCESSING_FINISHED) {
1729                                 if (ice_session_role(sal_op_get_ice_session(call->op)) == IR_Controlling) {
1730                                         linphone_core_update_call(lc, call, &call->current_params);
1731                                 }
1732                         } else if (evt == ORTP_EVENT_ICE_GATHERING_FINISHED) {
1733                                 IceSession *ice_session = sal_op_get_ice_session(call->op);
1734                                 linphone_call_stop_media_streams(call);
1735                                 if (evd->info.ice_processing_successful==TRUE) {
1736                                         ice_session_compute_candidates_foundations(ice_session);
1737                                         ice_session_eliminate_redundant_candidates(ice_session);
1738                                         ice_session_choose_default_candidates(ice_session);
1739                                 } else {
1740                                         ice_session_destroy(ice_session);
1741                                         sal_op_set_ice_session(call->op, NULL);
1742                                 }
1743                                 if (call->state==LinphoneCallOutgoingInit) {
1744                                         linphone_core_start_invite(call->core,call,NULL);
1745                                 } else {
1746                                         linphone_core_notify_incoming_call(call->core,call);
1747                                 }
1748                         }
1749                         ortp_event_destroy(ev);
1750                 }
1751         }
1752 #endif
1753         if (call->audiostream!=NULL) {
1754                 OrtpEvent *ev;
1755
1756                 // Beware that the application queue should not depend on treatments fron the
1757                 // mediastreamer queue.
1758                 audio_stream_iterate(call->audiostream);
1759
1760                 while (call->audiostream_app_evq && (NULL != (ev=ortp_ev_queue_get(call->audiostream_app_evq)))){
1761                         OrtpEventType evt=ortp_event_get_type(ev);
1762                         OrtpEventData *evd=ortp_event_get_data(ev);
1763                         if (evt == ORTP_EVENT_ZRTP_ENCRYPTION_CHANGED){
1764                                 linphone_call_audiostream_encryption_changed(call, evd->info.zrtp_stream_encrypted);
1765                         } else if (evt == ORTP_EVENT_ZRTP_SAS_READY) {
1766                                 linphone_call_audiostream_auth_token_ready(call, evd->info.zrtp_sas.sas, evd->info.zrtp_sas.verified);
1767                         } else if (evt == ORTP_EVENT_RTCP_PACKET_RECEIVED) {
1768                                 call->stats[LINPHONE_CALL_STATS_AUDIO].round_trip_delay = rtp_session_get_round_trip_propagation(call->audiostream->session);
1769                                 if(call->stats[LINPHONE_CALL_STATS_AUDIO].received_rtcp != NULL)
1770                                         freemsg(call->stats[LINPHONE_CALL_STATS_AUDIO].received_rtcp);
1771                                 call->stats[LINPHONE_CALL_STATS_AUDIO].received_rtcp = evd->packet;
1772                                 evd->packet = NULL;
1773                                 if (lc->vtable.call_stats_updated)
1774                                         lc->vtable.call_stats_updated(lc, call, &call->stats[LINPHONE_CALL_STATS_AUDIO]);
1775                         } else if (evt == ORTP_EVENT_RTCP_PACKET_EMITTED) {
1776                                 memcpy(&call->stats[LINPHONE_CALL_STATS_AUDIO].jitter_stats, rtp_session_get_jitter_stats(call->audiostream->session), sizeof(jitter_stats_t));
1777                                 if(call->stats[LINPHONE_CALL_STATS_AUDIO].sent_rtcp != NULL)
1778                                         freemsg(call->stats[LINPHONE_CALL_STATS_AUDIO].sent_rtcp);
1779                                 call->stats[LINPHONE_CALL_STATS_AUDIO].sent_rtcp = evd->packet;
1780                                 evd->packet = NULL;
1781                                 if (lc->vtable.call_stats_updated)
1782                                         lc->vtable.call_stats_updated(lc, call, &call->stats[LINPHONE_CALL_STATS_AUDIO]);
1783                         } else if (evt == ORTP_EVENT_ICE_SESSION_PROCESSING_FINISHED) {
1784                                 if (ice_session_role(sal_op_get_ice_session(call->op)) == IR_Controlling) {
1785                                         linphone_core_update_call(lc, call, &call->current_params);
1786                                 }
1787                         } else if (evt == ORTP_EVENT_ICE_GATHERING_FINISHED) {
1788                                 IceSession *ice_session = sal_op_get_ice_session(call->op);
1789                                 linphone_call_stop_media_streams(call);
1790                                 if (evd->info.ice_processing_successful==TRUE) {
1791                                         ice_session_compute_candidates_foundations(ice_session);
1792                                         ice_session_eliminate_redundant_candidates(ice_session);
1793                                         ice_session_choose_default_candidates(ice_session);
1794                                 } else {
1795                                         ice_session_destroy(sal_op_get_ice_session(call->op));
1796                                         sal_op_set_ice_session(call->op, NULL);
1797                                 }
1798                                 if (call->state==LinphoneCallOutgoingInit) {
1799                                         linphone_core_start_invite(call->core,call,NULL);
1800                                 } else {
1801                                         linphone_core_notify_incoming_call(call->core,call);
1802                                 }
1803                         }
1804                         ortp_event_destroy(ev);
1805                 }
1806         }
1807         if (call->state==LinphoneCallStreamsRunning && one_second_elapsed && call->audiostream!=NULL && disconnect_timeout>0 )
1808                 disconnected=!audio_stream_alive(call->audiostream,disconnect_timeout);
1809         if (disconnected)
1810                 linphone_core_disconnected(call->core,call);
1811 }
1812
1813 void linphone_call_log_completed(LinphoneCall *call){
1814         LinphoneCore *lc=call->core;
1815
1816         call->log->duration=time(NULL)-call->start_time;
1817
1818         if (call->log->status==LinphoneCallMissed){
1819                 char *info;
1820                 lc->missed_calls++;
1821                 info=ortp_strdup_printf(ngettext("You have missed %i call.",
1822                                          "You have missed %i calls.", lc->missed_calls),
1823                                 lc->missed_calls);
1824         if (lc->vtable.display_status!=NULL)
1825             lc->vtable.display_status(lc,info);
1826                 ms_free(info);
1827         }
1828         lc->call_logs=ms_list_prepend(lc->call_logs,(void *)call->log);
1829         if (ms_list_size(lc->call_logs)>lc->max_call_logs){
1830                 MSList *elem,*prevelem=NULL;
1831                 /*find the last element*/
1832                 for(elem=lc->call_logs;elem!=NULL;elem=elem->next){
1833                         prevelem=elem;
1834                 }
1835                 elem=prevelem;
1836                 linphone_call_log_destroy((LinphoneCallLog*)elem->data);
1837                 lc->call_logs=ms_list_remove_link(lc->call_logs,elem);
1838         }
1839         if (lc->vtable.call_log_updated!=NULL){
1840                 lc->vtable.call_log_updated(lc,call->log);
1841         }
1842         call_logs_write_to_config_file(lc);
1843 }
1844
1845 LinphoneCallState linphone_call_get_transfer_state(LinphoneCall *call) {
1846         return call->transfer_state;
1847 }
1848
1849 void linphone_call_set_transfer_state(LinphoneCall* call, LinphoneCallState state) {
1850         if (state != call->transfer_state) {
1851                 LinphoneCore* lc = call->core;
1852                 call->transfer_state = state;
1853                 if (lc->vtable.transfer_state_changed)
1854                         lc->vtable.transfer_state_changed(lc, call, state);
1855         }
1856 }
1857