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)
 252                         && (ice_session != NULL) && (ice_session_check_list(ice_session, i) == NULL)) {
 253                         ice_session_add_check_list(ice_session, ice_check_list_new());
 254                 }
 255         }
 256
 257         linphone_address_destroy(addr);
 258         return md;
 259 }
 260
 261 void update_local_media_description(LinphoneCore *lc, LinphoneCall *call){
 262         SalMediaDescription *md=call->localdesc;
 263         if (md== NULL) {
 264                 call->localdesc = create_local_media_description(lc,call);
 265         } else {
 266                 call->localdesc = _create_local_media_description(lc,call,md->session_id,md->session_ver+1);
 267                 sal_media_description_unref(md);
 268         }
 269 }
 270
 271 SalMediaDescription *create_local_media_description(LinphoneCore *lc, LinphoneCall *call){
 272         unsigned int id=rand() & 0xfff;
 273         return _create_local_media_description(lc,call,id,id);
 274 }
 275
 276 static int find_port_offset(LinphoneCore *lc){
 277         int offset;
 278         MSList *elem;
 279         int audio_port;
 280         bool_t already_used=FALSE;
 281         for(offset=0;offset<100;offset+=2){
 282                 audio_port=linphone_core_get_audio_port (lc)+offset;
 283                 already_used=FALSE;
 284                 for(elem=lc->calls;elem!=NULL;elem=elem->next){
 285                         LinphoneCall *call=(LinphoneCall*)elem->data;
 286                         if (call->audio_port==audio_port) {
 287                                 already_used=TRUE;
 288                                 break;
 289                         }
 290                 }
 291                 if (!already_used) break;
 292         }
 293         if (offset==100){
 294                 ms_error("Could not find any free port !");
 295                 return -1;
 296         }
 297         return offset;
 298 }
 299
 300 static void linphone_call_init_common(LinphoneCall *call, LinphoneAddress *from, LinphoneAddress *to){
 301         int port_offset;
 302         call->magic=linphone_call_magic;
 303         call->refcnt=1;
 304         call->state=LinphoneCallIdle;
 305         call->transfer_state = LinphoneCallIdle;
 306         call->start_time=time(NULL);
 307         call->media_start_time=0;
 308         call->log=linphone_call_log_new(call, from, to);
 309         call->owns_call_log=TRUE;
 310         linphone_core_notify_all_friends(call->core,LinphoneStatusOnThePhone);
 311         port_offset=find_port_offset (call->core);
 312         if (port_offset==-1) return;
 313         call->audio_port=linphone_core_get_audio_port(call->core)+port_offset;
 314         call->video_port=linphone_core_get_video_port(call->core)+port_offset;
 315         linphone_call_init_stats(&call->stats[LINPHONE_CALL_STATS_AUDIO], LINPHONE_CALL_STATS_AUDIO);
 316         linphone_call_init_stats(&call->stats[LINPHONE_CALL_STATS_VIDEO], LINPHONE_CALL_STATS_VIDEO);
 317 }
 318
 319 void linphone_call_init_stats(LinphoneCallStats *stats, int type) {
 320         stats->type = type;
 321         stats->received_rtcp = NULL;
 322         stats->sent_rtcp = NULL;
 323 }
 324
 325 static void discover_mtu(LinphoneCore *lc, const char *remote){
 326         int mtu;
 327         if (lc->net_conf.mtu==0 ){
 328                 /*attempt to discover mtu*/
 329                 mtu=ms_discover_mtu(remote);
 330                 if (mtu>0){
 331                         ms_set_mtu(mtu);
 332                         ms_message("Discovered mtu is %i, RTP payload max size is %i",
 333                                 mtu, ms_get_payload_max_size());
 334                 }
 335         }
 336 }
 337
 338 LinphoneCall * linphone_call_new_outgoing(struct _LinphoneCore *lc, LinphoneAddress *from, LinphoneAddress *to, const LinphoneCallParams *params)
 339 {
 340         LinphoneCall *call=ms_new0(LinphoneCall,1);
 341         call->dir=LinphoneCallOutgoing;
 342         call->op=sal_op_new(lc->sal);
 343         sal_op_set_user_pointer(call->op,call);
 344         call->core=lc;
 345         linphone_core_get_local_ip(lc,linphone_address_get_domain(to),call->localip);
 346         linphone_call_init_common(call,from,to);
 347         call->params=*params;
 348         if (linphone_core_get_firewall_policy(call->core) == LinphonePolicyUseIce) {
 349                 sal_op_set_ice_session(call->op, ice_session_new());
 350                 ice_session_set_role(sal_op_get_ice_session(call->op), IR_Controlling);
 351         }
 352         call->localdesc=create_local_media_description (lc,call);
 353         call->camera_active=params->has_video;
 354         if (linphone_core_get_firewall_policy(call->core) == LinphonePolicyUseStun) {
 355                 linphone_core_run_stun_tests(call->core,call);
 356         }
 357         discover_mtu(lc,linphone_address_get_domain (to));
 358         if (params->referer){
 359                 sal_call_set_referer(call->op,params->referer->op);
 360                 call->referer=linphone_call_ref(params->referer);
 361         }
 362         return call;
 363 }
 364
 365 LinphoneCall * linphone_call_new_incoming(LinphoneCore *lc, LinphoneAddress *from, LinphoneAddress *to, SalOp *op){
 366         LinphoneCall *call=ms_new0(LinphoneCall,1);
 367         char *from_str;
 368
 369         call->dir=LinphoneCallIncoming;
 370         sal_op_set_user_pointer(op,call);
 371         call->op=op;
 372         call->core=lc;
 373
 374         if (lc->sip_conf.ping_with_options){
 375                 /*the following sends an option request back to the caller so that
 376                  we get a chance to discover our nat'd address before answering.*/
 377                 call->ping_op=sal_op_new(lc->sal);
 378                 from_str=linphone_address_as_string_uri_only(from);
 379                 sal_op_set_route(call->ping_op,sal_op_get_network_origin(op));
 380                 sal_op_set_user_pointer(call->ping_op,call);
 381                 sal_ping(call->ping_op,linphone_core_find_best_identity(lc,from,NULL),from_str);
 382                 ms_free(from_str);
 383         }
 384
 385         linphone_address_clean(from);
 386         linphone_core_get_local_ip(lc,linphone_address_get_domain(from),call->localip);
 387         linphone_call_init_common(call, from, to);
 388         linphone_core_init_default_params(lc, &call->params);
 389         call->params.has_video &= !!lc->video_policy.automatically_accept;
 390         call->localdesc=create_local_media_description (lc,call);
 391         call->camera_active=call->params.has_video;
 392         switch (linphone_core_get_firewall_policy(call->core)) {
 393                 case LinphonePolicyUseIce:
 394                         linphone_call_init_media_streams(call);
 395                         linphone_call_start_media_streams_for_ice_gathering(call);
 396                         if (linphone_core_gather_ice_candidates(call->core,call)<0) {
 397                                 /* Ice candidates gathering failed, proceed with the call anyway. */
 398                                 linphone_call_delete_ice_session(call);
 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                                 linphone_call_delete_ice_session(call);
 408                         }
 409                         break;
 410         }
 411         discover_mtu(lc,linphone_address_get_domain(from));
 412         return call;
 413 }
 414
 415 /* this function is called internally to get rid of a call.
 416  It performs the following tasks:
 417  - remove the call from the internal list of calls
 418  - update the call logs accordingly
 419 */
 420
 421 static void linphone_call_set_terminated(LinphoneCall *call){
 422         LinphoneCore *lc=call->core;
 423
 424         linphone_core_update_allocated_audio_bandwidth(lc);
 425
 426         call->owns_call_log=FALSE;
 427         linphone_call_log_completed(call);
 428
 429
 430         if (call == lc->current_call){
 431                 ms_message("Resetting the current call");
 432                 lc->current_call=NULL;
 433         }
 434
 435         if (linphone_core_del_call(lc,call) != 0){
 436                 ms_error("Could not remove the call from the list !!!");
 437         }
 438
 439         if (ms_list_size(lc->calls)==0)
 440                 linphone_core_notify_all_friends(lc,lc->presence_mode);
 441
 442         linphone_core_conference_check_uninit(lc);
 443         if (call->ringing_beep){
 444                 linphone_core_stop_dtmf(lc);
 445                 call->ringing_beep=FALSE;
 446         }
 447         if (call->referer){
 448                 linphone_call_unref(call->referer);
 449                 call->referer=NULL;
 450         }
 451 }
 452
 453 void linphone_call_fix_call_parameters(LinphoneCall *call){
 454         call->params.has_video=call->current_params.has_video;
 455         call->params.media_encryption=call->current_params.media_encryption;
 456 }
 457
 458 const char *linphone_call_state_to_string(LinphoneCallState cs){
 459         switch (cs){
 460                 case LinphoneCallIdle:
 461                         return "LinphoneCallIdle";
 462                 case LinphoneCallIncomingReceived:
 463                         return "LinphoneCallIncomingReceived";
 464                 case LinphoneCallOutgoingInit:
 465                         return "LinphoneCallOutgoingInit";
 466                 case LinphoneCallOutgoingProgress:
 467                         return "LinphoneCallOutgoingProgress";
 468                 case LinphoneCallOutgoingRinging:
 469                         return "LinphoneCallOutgoingRinging";
 470                 case LinphoneCallOutgoingEarlyMedia:
 471                         return "LinphoneCallOutgoingEarlyMedia";
 472                 case LinphoneCallConnected:
 473                         return "LinphoneCallConnected";
 474                 case LinphoneCallStreamsRunning:
 475                         return "LinphoneCallStreamsRunning";
 476                 case LinphoneCallPausing:
 477                         return "LinphoneCallPausing";
 478                 case LinphoneCallPaused:
 479                         return "LinphoneCallPaused";
 480                 case LinphoneCallResuming:
 481                         return "LinphoneCallResuming";
 482                 case LinphoneCallRefered:
 483                         return "LinphoneCallRefered";
 484                 case LinphoneCallError:
 485                         return "LinphoneCallError";
 486                 case LinphoneCallEnd:
 487                         return "LinphoneCallEnd";
 488                 case LinphoneCallPausedByRemote:
 489                         return "LinphoneCallPausedByRemote";
 490                 case LinphoneCallUpdatedByRemote:
 491                         return "LinphoneCallUpdatedByRemote";
 492                 case LinphoneCallIncomingEarlyMedia:
 493                         return "LinphoneCallIncomingEarlyMedia";
 494                 case LinphoneCallUpdated:
 495                         return "LinphoneCallUpdated";
 496                 case LinphoneCallReleased:
 497                         return "LinphoneCallReleased";
 498         }
 499         return "undefined state";
 500 }
 501
 502 void linphone_call_set_state(LinphoneCall *call, LinphoneCallState cstate, const char *message){
 503         LinphoneCore *lc=call->core;
 504
 505         if (call->state!=cstate){
 506                 if (call->state==LinphoneCallEnd || call->state==LinphoneCallError){
 507                         if (cstate!=LinphoneCallReleased){
 508                                 ms_warning("Spurious call state change from %s to %s, ignored.",linphone_call_state_to_string(call->state),
 509                                    linphone_call_state_to_string(cstate));
 510                                 return;
 511                         }
 512                 }
 513                 ms_message("Call %p: moving from state %s to %s",call,linphone_call_state_to_string(call->state),
 514                            linphone_call_state_to_string(cstate));
 515                 if (cstate!=LinphoneCallRefered){
 516                         /*LinphoneCallRefered is rather an event, not a state.
 517                          Indeed it does not change the state of the call (still paused or running)*/
 518                         call->state=cstate;
 519                 }
 520                 if (cstate==LinphoneCallEnd || cstate==LinphoneCallError){
 521              switch(call->reason){
 522                                 case LinphoneReasonDeclined:
 523                                         call->log->status=LinphoneCallDeclined;
 524                                 case LinphoneReasonNotAnswered:
 525                                         call->log->status=LinphoneCallMissed;
 526                                 break;
 527                                 default:
 528                                 break;
 529                         }
 530                         linphone_call_set_terminated (call);
 531                 }
 532                 if (cstate == LinphoneCallConnected) {
 533                         call->log->status=LinphoneCallSuccess;
 534                         call->media_start_time=time(NULL);
 535                 }
 536
 537                 if (lc->vtable.call_state_changed)
 538                         lc->vtable.call_state_changed(lc,call,cstate,message);
 539                 if (cstate==LinphoneCallReleased){
 540                         if (call->op!=NULL) {
 541                                 /* so that we cannot have anymore upcalls for SAL
 542                                  concerning this call*/
 543                                 sal_op_release(call->op);
 544                                 call->op=NULL;
 545                         }
 546                         linphone_call_unref(call);
 547                 }
 548         }
 549 }
 550
 551 static void linphone_call_destroy(LinphoneCall *obj)
 552 {
 553         if (obj->op!=NULL) {
 554                 sal_op_release(obj->op);
 555                 obj->op=NULL;
 556         }
 557         if (obj->resultdesc!=NULL) {
 558                 sal_media_description_unref(obj->resultdesc);
 559                 obj->resultdesc=NULL;
 560         }
 561         if (obj->localdesc!=NULL) {
 562                 sal_media_description_unref(obj->localdesc);
 563                 obj->localdesc=NULL;
 564         }
 565         if (obj->ping_op) {
 566                 sal_op_release(obj->ping_op);
 567         }
 568         if (obj->refer_to){
 569                 ms_free(obj->refer_to);
 570         }
 571         if (obj->owns_call_log)
 572                 linphone_call_log_destroy(obj->log);
 573         if (obj->auth_token) {
 574                 ms_free(obj->auth_token);
 575         }
 576
 577         ms_free(obj);
 578 }
 579
 580 /**
 581  * @addtogroup call_control
 582  * @{
 583 **/
 584
 585 /**
 586  * Increments the call 's reference count.
 587  * An application that wishes to retain a pointer to call object
 588  * must use this function to unsure the pointer remains
 589  * valid. Once the application no more needs this pointer,
 590  * it must call linphone_call_unref().
 591 **/
 592 LinphoneCall * linphone_call_ref(LinphoneCall *obj){
 593         obj->refcnt++;
 594         return obj;
 595 }
 596
 597 /**
 598  * Decrements the call object reference count.
 599  * See linphone_call_ref().
 600 **/
 601 void linphone_call_unref(LinphoneCall *obj){
 602         obj->refcnt--;
 603         if (obj->refcnt==0){
 604                 linphone_call_destroy(obj);
 605         }
 606 }
 607
 608 /**
 609  * Returns current parameters associated to the call.
 610 **/
 611 const LinphoneCallParams * linphone_call_get_current_params(const LinphoneCall *call){
 612         return &call->current_params;
 613 }
 614
 615 static bool_t is_video_active(const SalStreamDescription *sd){
 616         return sd->rtp_port!=0 && sd->dir!=SalStreamInactive;
 617 }
 618
 619 /**
 620  * Returns call parameters proposed by remote.
 621  *
 622  * This is useful when receiving an incoming call, to know whether the remote party
 623  * supports video, encryption or whatever.
 624 **/
 625 const LinphoneCallParams * linphone_call_get_remote_params(LinphoneCall *call){
 626         LinphoneCallParams *cp=&call->remote_params;
 627         memset(cp,0,sizeof(*cp));
 628         if (call->op){
 629                 SalMediaDescription *md=sal_call_get_remote_media_description(call->op);
 630                 if (md){
 631                         SalStreamDescription *asd,*vsd,*secure_asd,*secure_vsd;
 632
 633                         asd=sal_media_description_find_stream(md,SalProtoRtpAvp,SalAudio);
 634                         vsd=sal_media_description_find_stream(md,SalProtoRtpAvp,SalVideo);
 635                         secure_asd=sal_media_description_find_stream(md,SalProtoRtpSavp,SalAudio);
 636                         secure_vsd=sal_media_description_find_stream(md,SalProtoRtpSavp,SalVideo);
 637                         if (secure_vsd){
 638                                 cp->has_video=is_video_active(secure_vsd);
 639                                 if (secure_asd || asd==NULL)
 640                                         cp->media_encryption=LinphoneMediaEncryptionSRTP;
 641                         }else if (vsd){
 642                                 cp->has_video=is_video_active(vsd);
 643                         }
 644                         return cp;
 645                 }
 646         }
 647         return NULL;
 648 }
 649
 650 /**
 651  * Returns the remote address associated to this call
 652  *
 653 **/
 654 const LinphoneAddress * linphone_call_get_remote_address(const LinphoneCall *call){
 655         return call->dir==LinphoneCallIncoming ? call->log->from : call->log->to;
 656 }
 657
 658 /**
 659  * Returns the remote address associated to this call as a string.
 660  *
 661  * The result string must be freed by user using ms_free().
 662 **/
 663 char *linphone_call_get_remote_address_as_string(const LinphoneCall *call){
 664         return linphone_address_as_string(linphone_call_get_remote_address(call));
 665 }
 666
 667 /**
 668  * Retrieves the call's current state.
 669 **/
 670 LinphoneCallState linphone_call_get_state(const LinphoneCall *call){
 671         return call->state;
 672 }
 673
 674 /**
 675  * Returns the reason for a call termination (either error or normal termination)
 676 **/
 677 LinphoneReason linphone_call_get_reason(const LinphoneCall *call){
 678         return call->reason;
 679 }
 680
 681 /**
 682  * Get the user_pointer in the LinphoneCall
 683  *
 684  * @ingroup call_control
 685  *
 686  * return user_pointer an opaque user pointer that can be retrieved at any time
 687 **/
 688 void *linphone_call_get_user_pointer(LinphoneCall *call)
 689 {
 690         return call->user_pointer;
 691 }
 692
 693 /**
 694  * Set the user_pointer in the LinphoneCall
 695  *
 696  * @ingroup call_control
 697  *
 698  * the user_pointer is an opaque user pointer that can be retrieved at any time in the LinphoneCall
 699 **/
 700 void linphone_call_set_user_pointer(LinphoneCall *call, void *user_pointer)
 701 {
 702         call->user_pointer = user_pointer;
 703 }
 704
 705 /**
 706  * Returns the call log associated to this call.
 707 **/
 708 LinphoneCallLog *linphone_call_get_call_log(const LinphoneCall *call){
 709         return call->log;
 710 }
 711
 712 /**
 713  * Returns the refer-to uri (if the call was transfered).
 714 **/
 715 const char *linphone_call_get_refer_to(const LinphoneCall *call){
 716         return call->refer_to;
 717 }
 718
 719 /**
 720  * Returns direction of the call (incoming or outgoing).
 721 **/
 722 LinphoneCallDir linphone_call_get_dir(const LinphoneCall *call){
 723         return call->log->dir;
 724 }
 725
 726 /**
 727  * Returns the far end's user agent description string, if available.
 728 **/
 729 const char *linphone_call_get_remote_user_agent(LinphoneCall *call){
 730         if (call->op){
 731                 return sal_op_get_remote_ua (call->op);
 732         }
 733         return NULL;
 734 }
 735
 736 /**
 737  * Returns true if this calls has received a transfer that has not been
 738  * executed yet.
 739  * Pending transfers are executed when this call is being paused or closed,
 740  * locally or by remote endpoint.
 741  * If the call is already paused while receiving the transfer request, the
 742  * transfer immediately occurs.
 743 **/
 744 bool_t linphone_call_has_transfer_pending(const LinphoneCall *call){
 745         return call->refer_pending;
 746 }
 747
 748 /**
 749  * Returns call's duration in seconds.
 750 **/
 751 int linphone_call_get_duration(const LinphoneCall *call){
 752         if (call->media_start_time==0) return 0;
 753         return time(NULL)-call->media_start_time;
 754 }
 755
 756 /**
 757  * Returns the call object this call is replacing, if any.
 758  * Call replacement can occur during call transfers.
 759  * By default, the core automatically terminates the replaced call and accept the new one.
 760  * This function allows the application to know whether a new incoming call is a one that replaces another one.
 761 **/
 762 LinphoneCall *linphone_call_get_replaced_call(LinphoneCall *call){
 763         SalOp *op=sal_call_get_replaces(call->op);
 764         if (op){
 765                 return (LinphoneCall*)sal_op_get_user_pointer(op);
 766         }
 767         return NULL;
 768 }
 769
 770 /**
 771  * Indicate whether camera input should be sent to remote end.
 772 **/
 773 void linphone_call_enable_camera (LinphoneCall *call, bool_t enable){
 774 #ifdef VIDEO_ENABLED
 775         if (call->videostream!=NULL && call->videostream->ticker!=NULL){
 776                 LinphoneCore *lc=call->core;
 777                 MSWebCam *nowebcam=get_nowebcam_device();
 778                 if (call->camera_active!=enable && lc->video_conf.device!=nowebcam){
 779                         video_stream_change_camera(call->videostream,
 780                                      enable ? lc->video_conf.device : nowebcam);
 781                 }
 782         }
 783         call->camera_active=enable;
 784 #endif
 785 }
 786
 787 /**
 788  * Take a photo of currently received video and write it into a jpeg file.
 789 **/
 790 int linphone_call_take_video_snapshot(LinphoneCall *call, const char *file){
 791 #ifdef VIDEO_ENABLED
 792         if (call->videostream!=NULL && call->videostream->jpegwriter!=NULL){
 793                 return ms_filter_call_method(call->videostream->jpegwriter,MS_JPEG_WRITER_TAKE_SNAPSHOT,(void*)file);
 794         }
 795         ms_warning("Cannot take snapshot: no currently running video stream on this call.");
 796         return -1;
 797 #endif
 798         return -1;
 799 }
 800
 801 /**
 802  * Returns TRUE if camera pictures are sent to the remote party.
 803 **/
 804 bool_t linphone_call_camera_enabled (const LinphoneCall *call){
 805         return call->camera_active;
 806 }
 807
 808 /**
 809  * Enable video stream.
 810 **/
 811 void linphone_call_params_enable_video(LinphoneCallParams *cp, bool_t enabled){
 812         cp->has_video=enabled;
 813 }
 814
 815 const PayloadType* linphone_call_params_get_used_audio_codec(const LinphoneCallParams *cp) {
 816         return cp->audio_codec;
 817 }
 818
 819 const PayloadType* linphone_call_params_get_used_video_codec(const LinphoneCallParams *cp) {
 820         return cp->video_codec;
 821 }
 822
 823 /**
 824  * Returns whether video is enabled.
 825 **/
 826 bool_t linphone_call_params_video_enabled(const LinphoneCallParams *cp){
 827         return cp->has_video;
 828 }
 829
 830 enum LinphoneMediaEncryption linphone_call_params_get_media_encryption(const LinphoneCallParams *cp) {
 831         return cp->media_encryption;
 832 }
 833
 834 void linphone_call_params_set_media_encryption(LinphoneCallParams *cp, enum LinphoneMediaEncryption e) {
 835         cp->media_encryption = e;
 836 }
 837
 838
 839 /**
 840  * Enable sending of real early media (during outgoing calls).
 841 **/
 842 void linphone_call_params_enable_early_media_sending(LinphoneCallParams *cp, bool_t enabled){
 843         cp->real_early_media=enabled;
 844 }
 845
 846 bool_t linphone_call_params_early_media_sending_enabled(const LinphoneCallParams *cp){
 847         return cp->real_early_media;
 848 }
 849
 850 /**
 851  * Returns true if the call is part of the locally managed conference.
 852 **/
 853 bool_t linphone_call_params_local_conference_mode(const LinphoneCallParams *cp){
 854         return cp->in_conference;
 855 }
 856
 857 /**
 858  * Refine bandwidth settings for this call by setting a bandwidth limit for audio streams.
 859  * As a consequence, codecs whose bitrates are not compatible with this limit won't be used.
 860 **/
 861 void linphone_call_params_set_audio_bandwidth_limit(LinphoneCallParams *cp, int bandwidth){
 862         cp->audio_bw=bandwidth;
 863 }
 864
 865 #ifdef VIDEO_ENABLED
 866 /**
 867  * Request remote side to send us a Video Fast Update.
 868 **/
 869 void linphone_call_send_vfu_request(LinphoneCall *call)
 870 {
 871         if (LinphoneCallStreamsRunning == linphone_call_get_state(call))
 872                 sal_call_send_vfu_request(call->op);
 873 }
 874 #endif
 875
 876 /**
 877  *
 878 **/
 879 LinphoneCallParams * linphone_call_params_copy(const LinphoneCallParams *cp){
 880         LinphoneCallParams *ncp=ms_new0(LinphoneCallParams,1);
 881         memcpy(ncp,cp,sizeof(LinphoneCallParams));
 882         return ncp;
 883 }
 884
 885 /**
 886  *
 887 **/
 888 void linphone_call_params_destroy(LinphoneCallParams *p){
 889         ms_free(p);
 890 }
 891
 892 /**
 893  * @}
 894 **/
 895
 896
 897 #ifdef TEST_EXT_RENDERER
 898 static void rendercb(void *data, const MSPicture *local, const MSPicture *remote){
 899         ms_message("rendercb, local buffer=%p, remote buffer=%p",
 900                    local ? local->planes[0] : NULL, remote? remote->planes[0] : NULL);
 901 }
 902 #endif
 903
 904 #ifdef VIDEO_ENABLED
 905 static void video_stream_event_cb(void *user_pointer, const MSFilter *f, const unsigned int event_id, const void *args){
 906     LinphoneCall* call = (LinphoneCall*) user_pointer;
 907         ms_warning("In linphonecall.c: video_stream_event_cb");
 908         switch (event_id) {
 909                 case MS_VIDEO_DECODER_DECODING_ERRORS:
 910                         ms_warning("Case is MS_VIDEO_DECODER_DECODING_ERRORS");
 911                         linphone_call_send_vfu_request(call);
 912                         break;
 913         case MS_VIDEO_DECODER_FIRST_IMAGE_DECODED:
 914             ms_message("First video frame decoded successfully");
 915             if (call->nextVideoFrameDecoded._func != NULL)
 916                 call->nextVideoFrameDecoded._func(call, call->nextVideoFrameDecoded._user_data);
 917             break;
 918                 default:
 919                         ms_warning("Unhandled event %i", event_id);
 920                         break;
 921         }
 922 }
 923 #endif
 924
 925 void linphone_call_set_next_video_frame_decoded_callback(LinphoneCall *call, LinphoneCallCbFunc cb, void* user_data) {
 926     call->nextVideoFrameDecoded._func = cb;
 927     call->nextVideoFrameDecoded._user_data = user_data;
 928 #ifdef VIDEO_ENABLED
 929     ms_filter_call_method_noarg(call->videostream->decoder, MS_VIDEO_DECODER_RESET_FIRST_IMAGE_NOTIFICATION);
 930 #endif
 931 }
 932
 933 void linphone_call_init_media_streams(LinphoneCall *call){
 934         LinphoneCore *lc=call->core;
 935         SalMediaDescription *md=call->localdesc;
 936         AudioStream *audiostream;
 937         IceSession *ice_session = sal_op_get_ice_session(call->op);
 938
 939         call->audiostream=audiostream=audio_stream_new(md->streams[0].rtp_port,md->streams[0].rtcp_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) && (ice_session != NULL)){
 971                 rtp_session_set_pktinfo(audiostream->session, TRUE);
 972                 audiostream->ice_check_list = ice_session_check_list(ice_session, 0);
 973                 ice_check_list_set_rtp_session(audiostream->ice_check_list, audiostream->session);
 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].rtp_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].rtp_port,md->streams[1].rtcp_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) && (ice_session != NULL)){
 996                         rtp_session_set_pktinfo(call->videostream->session, TRUE);
 997                         call->videostream->ice_check_list = ice_session_check_list(ice_session, 1);
 998                         ice_check_list_set_rtp_session(call->videostream->ice_check_list, call->videostream->session);
 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->rtp_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->rtp_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->rtp_addr[0]!='\0' ? stream->rtp_addr : call->resultdesc->addr,
1254                                 stream->rtp_port,
1255                                 stream->rtcp_addr[0]!='\0' ? stream->rtcp_addr : call->resultdesc->addr,
1256                                 linphone_core_rtcp_enabled(lc) ? (stream->rtcp_port) : 0,
1257                                 used_pt,
1258                                 jitt_comp,
1259                                 playfile,
1260                                 recfile,
1261                                 playcard,
1262                                 captcard,
1263                                 use_ec
1264                                 );
1265                         post_configure_audio_streams(call);
1266                         if (muted && !send_ringbacktone){
1267                                 audio_stream_set_mic_gain(call->audiostream,0);
1268                         }
1269                         if (stream->dir==SalStreamSendOnly && playfile!=NULL){
1270                                 int pause_time=500;
1271                                 ms_filter_call_method(call->audiostream->soundread,MS_FILE_PLAYER_LOOP,&pause_time);
1272                         }
1273                         if (send_ringbacktone){
1274                                 setup_ring_player(lc,call);
1275                         }
1276                         audio_stream_set_rtcp_information(call->audiostream, cname, LINPHONE_RTCP_SDES_TOOL);
1277
1278             /* valid local tags are > 0 */
1279                         if (stream->proto == SalProtoRtpSavp) {
1280                 const SalStreamDescription *local_st_desc=sal_media_description_find_stream(call->localdesc,
1281                                                                                             SalProtoRtpSavp,SalAudio);
1282                 int crypto_idx = find_crypto_index_from_tag(local_st_desc->crypto, stream->crypto_local_tag);
1283
1284                 if (crypto_idx >= 0) {
1285                     audio_stream_enable_strp(
1286                                              call->audiostream,
1287                                              stream->crypto[0].algo,
1288                                              local_st_desc->crypto[crypto_idx].master_key,
1289                                              stream->crypto[0].master_key);
1290                     call->audiostream_encrypted=TRUE;
1291                 } else {
1292                     ms_warning("Failed to find local crypto algo with tag: %d", stream->crypto_local_tag);
1293                     call->audiostream_encrypted=FALSE;
1294                 }
1295                         }else call->audiostream_encrypted=FALSE;
1296                         if (call->params.in_conference){
1297                                 /*transform the graph to connect it to the conference filter */
1298                                 bool_t mute=stream->dir==SalStreamRecvOnly;
1299                                 linphone_call_add_to_conf(call, mute);
1300                         }
1301                         call->current_params.in_conference=call->params.in_conference;
1302                 }else ms_warning("No audio stream accepted ?");
1303         }
1304 }
1305
1306 static void linphone_call_start_video_stream(LinphoneCall *call, const char *cname,bool_t all_inputs_muted){
1307 #ifdef VIDEO_ENABLED
1308         LinphoneCore *lc=call->core;
1309         int used_pt=-1;
1310         /* look for savp stream first */
1311         const SalStreamDescription *vstream=sal_media_description_find_stream(call->resultdesc,
1312                                                 SalProtoRtpSavp,SalVideo);
1313         /* no savp audio stream, use avp */
1314         if (!vstream)
1315                 vstream=sal_media_description_find_stream(call->resultdesc,
1316                                                 SalProtoRtpAvp,SalVideo);
1317
1318         /* shutdown preview */
1319         if (lc->previewstream!=NULL) {
1320                 video_preview_stop(lc->previewstream);
1321                 lc->previewstream=NULL;
1322         }
1323
1324         if (vstream!=NULL && vstream->dir!=SalStreamInactive && vstream->rtp_port!=0) {
1325                 const char *rtp_addr=vstream->rtp_addr[0]!='\0' ? vstream->rtp_addr : call->resultdesc->addr;
1326                 const char *rtcp_addr=vstream->rtcp_addr[0]!='\0' ? vstream->rtcp_addr : call->resultdesc->addr;
1327                 call->video_profile=make_profile(call,call->resultdesc,vstream,&used_pt);
1328                 if (used_pt!=-1){
1329                         call->current_params.video_codec = rtp_profile_get_payload(call->video_profile, used_pt);
1330                         VideoStreamDir dir=VideoStreamSendRecv;
1331                         MSWebCam *cam=lc->video_conf.device;
1332                         bool_t is_inactive=FALSE;
1333
1334                         call->current_params.has_video=TRUE;
1335
1336                         video_stream_enable_adaptive_bitrate_control(call->videostream,
1337                                                                   linphone_core_adaptive_rate_control_enabled(lc));
1338                         video_stream_set_sent_video_size(call->videostream,linphone_core_get_preferred_video_size(lc));
1339                         video_stream_enable_self_view(call->videostream,lc->video_conf.selfview);
1340                         if (lc->video_window_id!=0)
1341                                 video_stream_set_native_window_id(call->videostream,lc->video_window_id);
1342                         if (lc->preview_window_id!=0)
1343                                 video_stream_set_native_preview_window_id (call->videostream,lc->preview_window_id);
1344                         video_stream_use_preview_video_window (call->videostream,lc->use_preview_window);
1345
1346                         if (vstream->dir==SalStreamSendOnly && lc->video_conf.capture ){
1347                                 cam=get_nowebcam_device();
1348                                 dir=VideoStreamSendOnly;
1349                         }else if (vstream->dir==SalStreamRecvOnly && lc->video_conf.display ){
1350                                 dir=VideoStreamRecvOnly;
1351                         }else if (vstream->dir==SalStreamSendRecv){
1352                                 if (lc->video_conf.display && lc->video_conf.capture)
1353                                         dir=VideoStreamSendRecv;
1354                                 else if (lc->video_conf.display)
1355                                         dir=VideoStreamRecvOnly;
1356                                 else
1357                                         dir=VideoStreamSendOnly;
1358                         }else{
1359                                 ms_warning("video stream is inactive.");
1360                                 /*either inactive or incompatible with local capabilities*/
1361                                 is_inactive=TRUE;
1362                         }
1363                         if (call->camera_active==FALSE || all_inputs_muted){
1364                                 cam=get_nowebcam_device();
1365                         }
1366                         if (!is_inactive){
1367                 call->log->video_enabled = TRUE;
1368                                 video_stream_set_direction (call->videostream, dir);
1369                                 ms_message("%s lc rotation:%d\n", __FUNCTION__, lc->device_rotation);
1370                                 video_stream_set_device_rotation(call->videostream, lc->device_rotation);
1371                                 video_stream_start(call->videostream,
1372                                         call->video_profile, rtp_addr, vstream->rtp_port,
1373                                         rtcp_addr, linphone_core_rtcp_enabled(lc) ? (vstream->rtcp_port) : 0,
1374                                         used_pt, lc->rtp_conf.audio_jitt_comp, cam);
1375                                 video_stream_set_rtcp_information(call->videostream, cname,LINPHONE_RTCP_SDES_TOOL);
1376                         }
1377
1378                         if (vstream->proto == SalProtoRtpSavp) {
1379                                 const SalStreamDescription *local_st_desc=sal_media_description_find_stream(call->localdesc,
1380                                                 SalProtoRtpSavp,SalVideo);
1381
1382                                 video_stream_enable_strp(
1383                                         call->videostream,
1384                                         vstream->crypto[0].algo,
1385                                         local_st_desc->crypto[0].master_key,
1386                                         vstream->crypto[0].master_key
1387                                         );
1388                                 call->videostream_encrypted=TRUE;
1389                         }else{
1390                                 call->videostream_encrypted=FALSE;
1391                         }
1392                 }else ms_warning("No video stream accepted.");
1393         }else{
1394                 ms_warning("No valid video stream defined.");
1395         }
1396 #endif
1397 }
1398
1399 void linphone_call_start_media_streams(LinphoneCall *call, bool_t all_inputs_muted, bool_t send_ringbacktone){
1400         LinphoneCore *lc=call->core;
1401
1402         call->current_params.audio_codec = NULL;
1403         call->current_params.video_codec = NULL;
1404
1405         LinphoneAddress *me=linphone_core_get_primary_contact_parsed(lc);
1406         char *cname;
1407         bool_t use_arc=linphone_core_adaptive_rate_control_enabled(lc);
1408 #ifdef VIDEO_ENABLED
1409         const SalStreamDescription *vstream=sal_media_description_find_stream(call->resultdesc,
1410                                                         SalProtoRtpAvp,SalVideo);
1411 #endif
1412
1413         if(call->audiostream == NULL)
1414         {
1415                 ms_fatal("start_media_stream() called without prior init !");
1416                 return;
1417         }
1418         cname=linphone_address_as_string_uri_only(me);
1419
1420 #if defined(VIDEO_ENABLED)
1421         if (vstream!=NULL && vstream->dir!=SalStreamInactive && vstream->payloads!=NULL){
1422                 /*when video is used, do not make adaptive rate control on audio, it is stupid.*/
1423                 use_arc=FALSE;
1424         }
1425 #endif
1426         linphone_call_start_audio_stream(call,cname,all_inputs_muted,send_ringbacktone,use_arc);
1427         call->current_params.has_video=FALSE;
1428         if (call->videostream!=NULL) {
1429                 linphone_call_start_video_stream(call,cname,all_inputs_muted);
1430         }
1431
1432         call->all_muted=all_inputs_muted;
1433         call->playing_ringbacktone=send_ringbacktone;
1434         call->up_bw=linphone_core_get_upload_bandwidth(lc);
1435
1436         if (call->params.media_encryption==LinphoneMediaEncryptionZRTP) {
1437                 OrtpZrtpParams params;
1438                 /*will be set later when zrtp is activated*/
1439                 call->current_params.media_encryption=LinphoneMediaEncryptionNone;
1440
1441                 params.zid_file=lc->zrtp_secrets_cache;
1442                 audio_stream_enable_zrtp(call->audiostream,&params);
1443         }else if (call->params.media_encryption==LinphoneMediaEncryptionSRTP){
1444                 call->current_params.media_encryption=linphone_call_are_all_streams_encrypted(call) ?
1445                         LinphoneMediaEncryptionSRTP : LinphoneMediaEncryptionNone;
1446         }
1447
1448         /*also reflect the change if the "wished" params, in order to avoid to propose SAVP or video again
1449          * further in the call, for example during pause,resume, conferencing reINVITEs*/
1450         linphone_call_fix_call_parameters(call);
1451         if ((sal_op_get_ice_session(call->op) != NULL) && (ice_session_state(sal_op_get_ice_session(call->op)) != IS_Completed)) {
1452                 ice_session_start_connectivity_checks(sal_op_get_ice_session(call->op));
1453         }
1454
1455         goto end;
1456         end:
1457                 ms_free(cname);
1458                 linphone_address_destroy(me);
1459 }
1460
1461 void linphone_call_start_media_streams_for_ice_gathering(LinphoneCall *call){
1462         audio_stream_start_ice_gathering(call->audiostream);
1463         if (call->videostream) {
1464                 video_stream_start_ice_gathering(call->videostream);
1465         }
1466 }
1467
1468 void linphone_call_delete_ice_session(LinphoneCall *call){
1469         IceSession *ice_session = sal_op_get_ice_session(call->op);
1470         if (ice_session != NULL) {
1471                 ice_session_destroy(ice_session);
1472                 sal_op_set_ice_session(call->op, NULL);
1473                 if (call->audiostream != NULL) call->audiostream->ice_check_list = NULL;
1474                 if (call->videostream != NULL) call->videostream->ice_check_list = NULL;
1475         }
1476 }
1477
1478 static void linphone_call_log_fill_stats(LinphoneCallLog *log, AudioStream *st){
1479         audio_stream_get_local_rtp_stats (st,&log->local_stats);
1480         log->quality=audio_stream_get_average_quality_rating(st);
1481 }
1482
1483 void linphone_call_stop_media_streams(LinphoneCall *call){
1484         if (call->audiostream!=NULL) {
1485                 call->audiostream->ice_check_list = NULL;
1486                 rtp_session_unregister_event_queue(call->audiostream->session,call->audiostream_app_evq);
1487                 ortp_ev_queue_flush(call->audiostream_app_evq);
1488                 ortp_ev_queue_destroy(call->audiostream_app_evq);
1489                 call->audiostream_app_evq=NULL;
1490
1491                 if (call->audiostream->ec){
1492                         const char *state_str=NULL;
1493                         ms_filter_call_method(call->audiostream->ec,MS_ECHO_CANCELLER_GET_STATE_STRING,&state_str);
1494                         if (state_str){
1495                                 ms_message("Writing echo canceler state, %i bytes",(int)strlen(state_str));
1496                                 lp_config_set_string(call->core->config,"sound","ec_state",state_str);
1497                         }
1498                 }
1499                 linphone_call_log_fill_stats (call->log,call->audiostream);
1500                 if (call->endpoint){
1501                         linphone_call_remove_from_conf(call);
1502                 }
1503                 audio_stream_stop(call->audiostream);
1504                 call->audiostream=NULL;
1505         }
1506
1507
1508 #ifdef VIDEO_ENABLED
1509         if (call->videostream!=NULL){
1510                 call->videostream->ice_check_list = NULL;
1511                 rtp_session_unregister_event_queue(call->videostream->session,call->videostream_app_evq);
1512                 ortp_ev_queue_flush(call->videostream_app_evq);
1513                 ortp_ev_queue_destroy(call->videostream_app_evq);
1514                 call->videostream_app_evq=NULL;
1515                 video_stream_stop(call->videostream);
1516                 call->videostream=NULL;
1517         }
1518 #endif
1519         ms_event_queue_skip(call->core->msevq);
1520
1521         if (call->audio_profile){
1522                 rtp_profile_clear_all(call->audio_profile);
1523                 rtp_profile_destroy(call->audio_profile);
1524                 call->audio_profile=NULL;
1525         }
1526         if (call->video_profile){
1527                 rtp_profile_clear_all(call->video_profile);
1528                 rtp_profile_destroy(call->video_profile);
1529                 call->video_profile=NULL;
1530         }
1531 }
1532
1533
1534
1535 void linphone_call_enable_echo_cancellation(LinphoneCall *call, bool_t enable) {
1536         if (call!=NULL && call->audiostream!=NULL && call->audiostream->ec){
1537                 bool_t bypass_mode = !enable;
1538                 ms_filter_call_method(call->audiostream->ec,MS_ECHO_CANCELLER_SET_BYPASS_MODE,&bypass_mode);
1539         }
1540 }
1541 bool_t linphone_call_echo_cancellation_enabled(LinphoneCall *call) {
1542         if (call!=NULL && call->audiostream!=NULL && call->audiostream->ec){
1543                 bool_t val;
1544                 ms_filter_call_method(call->audiostream->ec,MS_ECHO_CANCELLER_GET_BYPASS_MODE,&val);
1545                 return !val;
1546         } else {
1547                 return linphone_core_echo_cancellation_enabled(call->core);
1548         }
1549 }
1550
1551 void linphone_call_enable_echo_limiter(LinphoneCall *call, bool_t val){
1552         if (call!=NULL && call->audiostream!=NULL ) {
1553                 if (val) {
1554                 const char *type=lp_config_get_string(call->core->config,"sound","el_type","mic");
1555                 if (strcasecmp(type,"mic")==0)
1556                         audio_stream_enable_echo_limiter(call->audiostream,ELControlMic);
1557                 else if (strcasecmp(type,"full")==0)
1558                         audio_stream_enable_echo_limiter(call->audiostream,ELControlFull);
1559                 } else {
1560                         audio_stream_enable_echo_limiter(call->audiostream,ELInactive);
1561                 }
1562         }
1563 }
1564
1565 bool_t linphone_call_echo_limiter_enabled(const LinphoneCall *call){
1566         if (call!=NULL && call->audiostream!=NULL ){
1567                 return call->audiostream->el_type !=ELInactive ;
1568         } else {
1569                 return linphone_core_echo_limiter_enabled(call->core);
1570         }
1571 }
1572
1573 /**
1574  * @addtogroup call_misc
1575  * @{
1576 **/
1577
1578 /**
1579  * Returns the measured sound volume played locally (received from remote).
1580  * It is expressed in dbm0.
1581 **/
1582 float linphone_call_get_play_volume(LinphoneCall *call){
1583         AudioStream *st=call->audiostream;
1584         if (st && st->volrecv){
1585                 float vol=0;
1586                 ms_filter_call_method(st->volrecv,MS_VOLUME_GET,&vol);
1587                 return vol;
1588
1589         }
1590         return LINPHONE_VOLUME_DB_LOWEST;
1591 }
1592
1593 /**
1594  * Returns the measured sound volume recorded locally (sent to remote).
1595  * It is expressed in dbm0.
1596 **/
1597 float linphone_call_get_record_volume(LinphoneCall *call){
1598         AudioStream *st=call->audiostream;
1599         if (st && st->volsend && !call->audio_muted && call->state==LinphoneCallStreamsRunning){
1600                 float vol=0;
1601                 ms_filter_call_method(st->volsend,MS_VOLUME_GET,&vol);
1602                 return vol;
1603
1604         }
1605         return LINPHONE_VOLUME_DB_LOWEST;
1606 }
1607
1608 /**
1609  * Obtain real-time quality rating of the call
1610  *
1611  * Based on local RTP statistics and RTCP feedback, a quality rating is computed and updated
1612  * during all the duration of the call. This function returns its value at the time of the function call.
1613  * It is expected that the rating is updated at least every 5 seconds or so.
1614  * The rating is a floating point number comprised between 0 and 5.
1615  *
1616  * 4-5 = good quality <br>
1617  * 3-4 = average quality <br>
1618  * 2-3 = poor quality <br>
1619  * 1-2 = very poor quality <br>
1620  * 0-1 = can't be worse, mostly unusable <br>
1621  *
1622  * @returns The function returns -1 if no quality measurement is available, for example if no
1623  * active audio stream exist. Otherwise it returns the quality rating.
1624 **/
1625 float linphone_call_get_current_quality(LinphoneCall *call){
1626         if (call->audiostream){
1627                 return audio_stream_get_quality_rating(call->audiostream);
1628         }
1629         return -1;
1630 }
1631
1632 /**
1633  * Returns call quality averaged over all the duration of the call.
1634  *
1635  * See linphone_call_get_current_quality() for more details about quality measurement.
1636 **/
1637 float linphone_call_get_average_quality(LinphoneCall *call){
1638         if (call->audiostream){
1639                 return audio_stream_get_average_quality_rating(call->audiostream);
1640         }
1641         return -1;
1642 }
1643
1644 /**
1645  * Access last known statistics for audio stream, for a given call.
1646 **/
1647 const LinphoneCallStats *linphone_call_get_audio_stats(const LinphoneCall *call) {
1648         return &call->stats[LINPHONE_CALL_STATS_AUDIO];
1649 }
1650
1651 /**
1652  * Access last known statistics for video stream, for a given call.
1653 **/
1654 const LinphoneCallStats *linphone_call_get_video_stats(const LinphoneCall *call) {
1655         return &call->stats[LINPHONE_CALL_STATS_VIDEO];
1656 }
1657
1658
1659 /**
1660  * @}
1661 **/
1662
1663 static void display_bandwidth(RtpSession *as, RtpSession *vs){
1664         ms_message("bandwidth usage: audio=[d=%.1f,u=%.1f] video=[d=%.1f,u=%.1f] kbit/sec",
1665         (as!=NULL) ? (rtp_session_compute_recv_bandwidth(as)*1e-3) : 0,
1666         (as!=NULL) ? (rtp_session_compute_send_bandwidth(as)*1e-3) : 0,
1667         (vs!=NULL) ? (rtp_session_compute_recv_bandwidth(vs)*1e-3) : 0,
1668         (vs!=NULL) ? (rtp_session_compute_send_bandwidth(vs)*1e-3) : 0);
1669 }
1670
1671 static void linphone_core_disconnected(LinphoneCore *lc, LinphoneCall *call){
1672         char temp[256];
1673         char *from=NULL;
1674         if(call)
1675                 from = linphone_call_get_remote_address_as_string(call);
1676         if (from)
1677         {
1678                 snprintf(temp,sizeof(temp),"Remote end %s seems to have disconnected, the call is going to be closed.",from);
1679                 free(from);
1680         }
1681         else
1682         {
1683                 snprintf(temp,sizeof(temp),"Remote end seems to have disconnected, the call is going to be closed.");
1684         }
1685         if (lc->vtable.display_warning!=NULL)
1686                 lc->vtable.display_warning(lc,temp);
1687         linphone_core_terminate_call(lc,call);
1688 }
1689
1690 void linphone_call_background_tasks(LinphoneCall *call, bool_t one_second_elapsed){
1691         LinphoneCore* lc = call->core;
1692         int disconnect_timeout = linphone_core_get_nortp_timeout(call->core);
1693         bool_t disconnected=FALSE;
1694
1695         if (call->state==LinphoneCallStreamsRunning && one_second_elapsed){
1696                 RtpSession *as=NULL,*vs=NULL;
1697                 float audio_load=0, video_load=0;
1698                 if (call->audiostream!=NULL){
1699                         as=call->audiostream->session;
1700                         if (call->audiostream->ticker)
1701                                 audio_load=ms_ticker_get_average_load(call->audiostream->ticker);
1702                 }
1703                 if (call->videostream!=NULL){
1704                         if (call->videostream->ticker)
1705                                 video_load=ms_ticker_get_average_load(call->videostream->ticker);
1706                         vs=call->videostream->session;
1707                 }
1708                 display_bandwidth(as,vs);
1709                 ms_message("Thread processing load: audio=%f\tvideo=%f",audio_load,video_load);
1710         }
1711 #ifdef VIDEO_ENABLED
1712         if (call->videostream!=NULL) {
1713                 OrtpEvent *ev;
1714
1715                 /* Ensure there is no dangling ICE check list. */
1716                 if (sal_op_get_ice_session(call->op) == NULL) call->videostream->ice_check_list = NULL;
1717
1718                 // Beware that the application queue should not depend on treatments fron the
1719                 // mediastreamer queue.
1720                 video_stream_iterate(call->videostream);
1721
1722                 while (call->videostream_app_evq && (NULL != (ev=ortp_ev_queue_get(call->videostream_app_evq)))){
1723                         OrtpEventType evt=ortp_event_get_type(ev);
1724                         OrtpEventData *evd=ortp_event_get_data(ev);
1725                         if (evt == ORTP_EVENT_ZRTP_ENCRYPTION_CHANGED){
1726                                 linphone_call_videostream_encryption_changed(call, evd->info.zrtp_stream_encrypted);
1727                         } else if (evt == ORTP_EVENT_RTCP_PACKET_RECEIVED) {
1728                                 call->stats[LINPHONE_CALL_STATS_VIDEO].round_trip_delay = rtp_session_get_round_trip_propagation(call->videostream->session);
1729                                 if(call->stats[LINPHONE_CALL_STATS_VIDEO].received_rtcp != NULL)
1730                                         freemsg(call->stats[LINPHONE_CALL_STATS_VIDEO].received_rtcp);
1731                                 call->stats[LINPHONE_CALL_STATS_VIDEO].received_rtcp = evd->packet;
1732                                 evd->packet = NULL;
1733                                 if (lc->vtable.call_stats_updated)
1734                                         lc->vtable.call_stats_updated(lc, call, &call->stats[LINPHONE_CALL_STATS_VIDEO]);
1735                         } else if (evt == ORTP_EVENT_RTCP_PACKET_EMITTED) {
1736                                 memcpy(&call->stats[LINPHONE_CALL_STATS_VIDEO].jitter_stats, rtp_session_get_jitter_stats(call->videostream->session), sizeof(jitter_stats_t));
1737                                 if(call->stats[LINPHONE_CALL_STATS_VIDEO].sent_rtcp != NULL)
1738                                         freemsg(call->stats[LINPHONE_CALL_STATS_VIDEO].sent_rtcp);
1739                                 call->stats[LINPHONE_CALL_STATS_VIDEO].sent_rtcp = evd->packet;
1740                                 evd->packet = NULL;
1741                                 if (lc->vtable.call_stats_updated)
1742                                         lc->vtable.call_stats_updated(lc, call, &call->stats[LINPHONE_CALL_STATS_VIDEO]);
1743                         } else if (evt == ORTP_EVENT_ICE_SESSION_PROCESSING_FINISHED) {
1744                                 if (ice_session_role(sal_op_get_ice_session(call->op)) == IR_Controlling) {
1745                                         linphone_core_update_call(lc, call, &call->current_params);
1746                                 }
1747                         } else if (evt == ORTP_EVENT_ICE_GATHERING_FINISHED) {
1748                                 IceSession *ice_session = sal_op_get_ice_session(call->op);
1749                                 linphone_call_stop_media_streams(call);
1750                                 if (evd->info.ice_processing_successful==TRUE) {
1751                                         ice_session_compute_candidates_foundations(ice_session);
1752                                         ice_session_eliminate_redundant_candidates(ice_session);
1753                                         ice_session_choose_default_candidates(ice_session);
1754                                 } else {
1755                                         linphone_call_delete_ice_session(call);
1756                                 }
1757                                 if (call->state==LinphoneCallOutgoingInit) {
1758                                         linphone_core_start_invite(call->core,call,NULL);
1759                                 } else {
1760                                         linphone_core_notify_incoming_call(call->core,call);
1761                                 }
1762                         }
1763                         ortp_event_destroy(ev);
1764                 }
1765         }
1766 #endif
1767         if (call->audiostream!=NULL) {
1768                 OrtpEvent *ev;
1769
1770                 /* Ensure there is no dangling ICE check list. */
1771                 if (sal_op_get_ice_session(call->op) == NULL) call->audiostream->ice_check_list = NULL;
1772
1773                 // Beware that the application queue should not depend on treatments fron the
1774                 // mediastreamer queue.
1775                 audio_stream_iterate(call->audiostream);
1776
1777                 while (call->audiostream_app_evq && (NULL != (ev=ortp_ev_queue_get(call->audiostream_app_evq)))){
1778                         OrtpEventType evt=ortp_event_get_type(ev);
1779                         OrtpEventData *evd=ortp_event_get_data(ev);
1780                         if (evt == ORTP_EVENT_ZRTP_ENCRYPTION_CHANGED){
1781                                 linphone_call_audiostream_encryption_changed(call, evd->info.zrtp_stream_encrypted);
1782                         } else if (evt == ORTP_EVENT_ZRTP_SAS_READY) {
1783                                 linphone_call_audiostream_auth_token_ready(call, evd->info.zrtp_sas.sas, evd->info.zrtp_sas.verified);
1784                         } else if (evt == ORTP_EVENT_RTCP_PACKET_RECEIVED) {
1785                                 call->stats[LINPHONE_CALL_STATS_AUDIO].round_trip_delay = rtp_session_get_round_trip_propagation(call->audiostream->session);
1786                                 if(call->stats[LINPHONE_CALL_STATS_AUDIO].received_rtcp != NULL)
1787                                         freemsg(call->stats[LINPHONE_CALL_STATS_AUDIO].received_rtcp);
1788                                 call->stats[LINPHONE_CALL_STATS_AUDIO].received_rtcp = evd->packet;
1789                                 evd->packet = NULL;
1790                                 if (lc->vtable.call_stats_updated)
1791                                         lc->vtable.call_stats_updated(lc, call, &call->stats[LINPHONE_CALL_STATS_AUDIO]);
1792                         } else if (evt == ORTP_EVENT_RTCP_PACKET_EMITTED) {
1793                                 memcpy(&call->stats[LINPHONE_CALL_STATS_AUDIO].jitter_stats, rtp_session_get_jitter_stats(call->audiostream->session), sizeof(jitter_stats_t));
1794                                 if(call->stats[LINPHONE_CALL_STATS_AUDIO].sent_rtcp != NULL)
1795                                         freemsg(call->stats[LINPHONE_CALL_STATS_AUDIO].sent_rtcp);
1796                                 call->stats[LINPHONE_CALL_STATS_AUDIO].sent_rtcp = evd->packet;
1797                                 evd->packet = NULL;
1798                                 if (lc->vtable.call_stats_updated)
1799                                         lc->vtable.call_stats_updated(lc, call, &call->stats[LINPHONE_CALL_STATS_AUDIO]);
1800                         } else if (evt == ORTP_EVENT_ICE_SESSION_PROCESSING_FINISHED) {
1801                                 if (ice_session_role(sal_op_get_ice_session(call->op)) == IR_Controlling) {
1802                                         linphone_core_update_call(lc, call, &call->current_params);
1803                                 }
1804                         } else if (evt == ORTP_EVENT_ICE_GATHERING_FINISHED) {
1805                                 IceSession *ice_session = sal_op_get_ice_session(call->op);
1806                                 linphone_call_stop_media_streams(call);
1807                                 if (evd->info.ice_processing_successful==TRUE) {
1808                                         ice_session_compute_candidates_foundations(ice_session);
1809                                         ice_session_eliminate_redundant_candidates(ice_session);
1810                                         ice_session_choose_default_candidates(ice_session);
1811                                 } else {
1812                                         linphone_call_delete_ice_session(call);
1813                                 }
1814                                 if (call->state==LinphoneCallOutgoingInit) {
1815                                         linphone_core_start_invite(call->core,call,NULL);
1816                                 } else {
1817                                         linphone_core_notify_incoming_call(call->core,call);
1818                                 }
1819                         }
1820                         ortp_event_destroy(ev);
1821                 }
1822         }
1823         if (call->state==LinphoneCallStreamsRunning && one_second_elapsed && call->audiostream!=NULL && disconnect_timeout>0 )
1824                 disconnected=!audio_stream_alive(call->audiostream,disconnect_timeout);
1825         if (disconnected)
1826                 linphone_core_disconnected(call->core,call);
1827 }
1828
1829 void linphone_call_log_completed(LinphoneCall *call){
1830         LinphoneCore *lc=call->core;
1831
1832         call->log->duration=time(NULL)-call->start_time;
1833
1834         if (call->log->status==LinphoneCallMissed){
1835                 char *info;
1836                 lc->missed_calls++;
1837                 info=ortp_strdup_printf(ngettext("You have missed %i call.",
1838                                          "You have missed %i calls.", lc->missed_calls),
1839                                 lc->missed_calls);
1840         if (lc->vtable.display_status!=NULL)
1841             lc->vtable.display_status(lc,info);
1842                 ms_free(info);
1843         }
1844         lc->call_logs=ms_list_prepend(lc->call_logs,(void *)call->log);
1845         if (ms_list_size(lc->call_logs)>lc->max_call_logs){
1846                 MSList *elem,*prevelem=NULL;
1847                 /*find the last element*/
1848                 for(elem=lc->call_logs;elem!=NULL;elem=elem->next){
1849                         prevelem=elem;
1850                 }
1851                 elem=prevelem;
1852                 linphone_call_log_destroy((LinphoneCallLog*)elem->data);
1853                 lc->call_logs=ms_list_remove_link(lc->call_logs,elem);
1854         }
1855         if (lc->vtable.call_log_updated!=NULL){
1856                 lc->vtable.call_log_updated(lc,call->log);
1857         }
1858         call_logs_write_to_config_file(lc);
1859 }
1860
1861 LinphoneCallState linphone_call_get_transfer_state(LinphoneCall *call) {
1862         return call->transfer_state;
1863 }
1864
1865 void linphone_call_set_transfer_state(LinphoneCall* call, LinphoneCallState state) {
1866         if (state != call->transfer_state) {
1867                 LinphoneCore* lc = call->core;
1868                 call->transfer_state = state;
1869                 if (lc->vtable.transfer_state_changed)
1870                         lc->vtable.transfer_state_changed(lc, call, state);
1871         }
1872 }
1873