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 void update_media_description_from_stun(SalMediaDescription *md, const StunCandidate *ac, const StunCandidate *vc){
 197         if (ac->port!=0){
 198                 strcpy(md->streams[0].rtp_addr,ac->addr);
 199                 md->streams[0].rtp_port=ac->port;
 200                 if ((ac->addr[0]!='\0' && vc->addr[0]!='\0' && strcmp(ac->addr,vc->addr)==0) || md->nstreams==1){
 201                         strcpy(md->addr,ac->addr);
 202                 }
 203         }
 204         if (vc->port!=0){
 205                 strcpy(md->streams[1].rtp_addr,vc->addr);
 206                 md->streams[1].rtp_port=vc->port;
 207         }
 208
 209 }
 210
 211
 212 static SalMediaDescription *_create_local_media_description(LinphoneCore *lc, LinphoneCall *call, unsigned int session_id, unsigned int session_ver){
 213         MSList *l;
 214         PayloadType *pt;
 215         int i;
 216         const char *me=linphone_core_get_identity(lc);
 217         LinphoneAddress *addr=linphone_address_new(me);
 218         const char *username=linphone_address_get_username (addr);
 219         SalMediaDescription *md=sal_media_description_new();
 220
 221         if (call->ping_time>0) {
 222                 linphone_core_adapt_to_network(lc,call->ping_time,&call->params);
 223         }
 224
 225         md->session_id=session_id;
 226         md->session_ver=session_ver;
 227         md->nstreams=1;
 228         strncpy(md->addr,call->localip,sizeof(md->addr));
 229         strncpy(md->username,username,sizeof(md->username));
 230
 231         if (call->params.down_bw)
 232                 md->bandwidth=call->params.down_bw;
 233         else md->bandwidth=linphone_core_get_download_bandwidth(lc);
 234
 235         /*set audio capabilities */
 236         strncpy(md->streams[0].rtp_addr,call->localip,sizeof(md->streams[0].rtp_addr));
 237         strncpy(md->streams[0].rtcp_addr,call->localip,sizeof(md->streams[0].rtcp_addr));
 238         md->streams[0].rtp_port=call->audio_port;
 239         md->streams[0].rtcp_port=call->audio_port+1;
 240         md->streams[0].proto=(call->params.media_encryption == LinphoneMediaEncryptionSRTP) ?
 241                 SalProtoRtpSavp : SalProtoRtpAvp;
 242         md->streams[0].type=SalAudio;
 243         if (call->params.down_ptime)
 244                 md->streams[0].ptime=call->params.down_ptime;
 245         else
 246                 md->streams[0].ptime=linphone_core_get_download_ptime(lc);
 247         l=make_codec_list(lc,lc->codecs_conf.audio_codecs,call->params.audio_bw,&md->streams[0].max_rate);
 248         pt=payload_type_clone(rtp_profile_get_payload_from_mime(&av_profile,"telephone-event"));
 249         l=ms_list_append(l,pt);
 250         md->streams[0].payloads=l;
 251
 252
 253
 254         if (call->params.has_video){
 255                 md->nstreams++;
 256                 md->streams[1].rtp_port=call->video_port;
 257                 md->streams[1].rtcp_port=call->video_port+1;
 258                 md->streams[1].proto=md->streams[0].proto;
 259                 md->streams[1].type=SalVideo;
 260                 l=make_codec_list(lc,lc->codecs_conf.video_codecs,0,NULL);
 261                 md->streams[1].payloads=l;
 262         }
 263
 264         for(i=0; i<md->nstreams; i++) {
 265                 if (md->streams[i].proto == SalProtoRtpSavp) {
 266                         md->streams[i].crypto[0].tag = 1;
 267                         md->streams[i].crypto[0].algo = AES_128_SHA1_80;
 268                         if (!generate_b64_crypto_key(30, md->streams[i].crypto[0].master_key))
 269                                 md->streams[i].crypto[0].algo = 0;
 270                         md->streams[i].crypto[1].tag = 2;
 271                         md->streams[i].crypto[1].algo = AES_128_SHA1_32;
 272                         if (!generate_b64_crypto_key(30, md->streams[i].crypto[1].master_key))
 273                                 md->streams[i].crypto[1].algo = 0;
 274                         md->streams[i].crypto[2].algo = 0;
 275                 }
 276         }
 277         update_media_description_from_stun(md,&call->ac,&call->vc);
 278         if (call->ice_session != NULL) {
 279                 linphone_core_update_local_media_description_from_ice(md, call->ice_session);
 280                 linphone_core_update_ice_state_in_call_stats(call);
 281         }
 282         linphone_address_destroy(addr);
 283         return md;
 284 }
 285
 286 void update_local_media_description(LinphoneCore *lc, LinphoneCall *call){
 287         SalMediaDescription *md=call->localdesc;
 288         if (md== NULL) {
 289                 call->localdesc = create_local_media_description(lc,call);
 290         } else {
 291                 call->localdesc = _create_local_media_description(lc,call,md->session_id,md->session_ver+1);
 292                 sal_media_description_unref(md);
 293         }
 294 }
 295
 296 SalMediaDescription *create_local_media_description(LinphoneCore *lc, LinphoneCall *call){
 297         unsigned int id=rand() & 0xfff;
 298         return _create_local_media_description(lc,call,id,id);
 299 }
 300
 301 static int find_port_offset(LinphoneCore *lc){
 302         int offset;
 303         MSList *elem;
 304         int audio_port;
 305         bool_t already_used=FALSE;
 306         for(offset=0;offset<100;offset+=2){
 307                 audio_port=linphone_core_get_audio_port (lc)+offset;
 308                 already_used=FALSE;
 309                 for(elem=lc->calls;elem!=NULL;elem=elem->next){
 310                         LinphoneCall *call=(LinphoneCall*)elem->data;
 311                         if (call->audio_port==audio_port) {
 312                                 already_used=TRUE;
 313                                 break;
 314                         }
 315                 }
 316                 if (!already_used) break;
 317         }
 318         if (offset==100){
 319                 ms_error("Could not find any free port !");
 320                 return -1;
 321         }
 322         return offset;
 323 }
 324
 325 static void linphone_call_init_common(LinphoneCall *call, LinphoneAddress *from, LinphoneAddress *to){
 326         int port_offset;
 327         call->magic=linphone_call_magic;
 328         call->refcnt=1;
 329         call->state=LinphoneCallIdle;
 330         call->transfer_state = LinphoneCallIdle;
 331         call->start_time=time(NULL);
 332         call->media_start_time=0;
 333         call->log=linphone_call_log_new(call, from, to);
 334         call->owns_call_log=TRUE;
 335         linphone_core_notify_all_friends(call->core,LinphoneStatusOnThePhone);
 336         port_offset=find_port_offset (call->core);
 337         if (port_offset==-1) return;
 338         call->audio_port=linphone_core_get_audio_port(call->core)+port_offset;
 339         call->video_port=linphone_core_get_video_port(call->core)+port_offset;
 340         linphone_call_init_stats(&call->stats[LINPHONE_CALL_STATS_AUDIO], LINPHONE_CALL_STATS_AUDIO);
 341         linphone_call_init_stats(&call->stats[LINPHONE_CALL_STATS_VIDEO], LINPHONE_CALL_STATS_VIDEO);
 342 }
 343
 344 void linphone_call_init_stats(LinphoneCallStats *stats, int type) {
 345         stats->type = type;
 346         stats->received_rtcp = NULL;
 347         stats->sent_rtcp = NULL;
 348         stats->ice_state = LinphoneIceStateNotActivated;
 349 }
 350
 351
 352 static void discover_mtu(LinphoneCore *lc, const char *remote){
 353         int mtu;
 354         if (lc->net_conf.mtu==0 ){
 355                 /*attempt to discover mtu*/
 356                 mtu=ms_discover_mtu(remote);
 357                 if (mtu>0){
 358                         ms_set_mtu(mtu);
 359                         ms_message("Discovered mtu is %i, RTP payload max size is %i",
 360                                 mtu, ms_get_payload_max_size());
 361                 }
 362         }
 363 }
 364
 365 LinphoneCall * linphone_call_new_outgoing(struct _LinphoneCore *lc, LinphoneAddress *from, LinphoneAddress *to, const LinphoneCallParams *params)
 366 {
 367         LinphoneCall *call=ms_new0(LinphoneCall,1);
 368         call->dir=LinphoneCallOutgoing;
 369         call->op=sal_op_new(lc->sal);
 370         sal_op_set_user_pointer(call->op,call);
 371         call->core=lc;
 372         linphone_core_get_local_ip(lc,linphone_address_get_domain(to),call->localip);
 373         linphone_call_init_common(call,from,to);
 374         call->params=*params;
 375         if (linphone_core_get_firewall_policy(call->core) == LinphonePolicyUseIce) {
 376                 call->ice_session = ice_session_new();
 377                 ice_session_set_role(call->ice_session, IR_Controlling);
 378         }
 379         if (linphone_core_get_firewall_policy(call->core) == LinphonePolicyUseStun) {
 380                 call->ping_time=linphone_core_run_stun_tests(call->core,call);
 381         }
 382         call->camera_active=params->has_video;
 383
 384         discover_mtu(lc,linphone_address_get_domain (to));
 385         if (params->referer){
 386                 sal_call_set_referer(call->op,params->referer->op);
 387                 call->referer=linphone_call_ref(params->referer);
 388         }
 389         return call;
 390 }
 391
 392 LinphoneCall * linphone_call_new_incoming(LinphoneCore *lc, LinphoneAddress *from, LinphoneAddress *to, SalOp *op){
 393         LinphoneCall *call=ms_new0(LinphoneCall,1);
 394         char *from_str;
 395
 396         call->dir=LinphoneCallIncoming;
 397         sal_op_set_user_pointer(op,call);
 398         call->op=op;
 399         call->core=lc;
 400
 401         if (lc->sip_conf.ping_with_options){
 402                 /*the following sends an option request back to the caller so that
 403                  we get a chance to discover our nat'd address before answering.*/
 404                 call->ping_op=sal_op_new(lc->sal);
 405                 from_str=linphone_address_as_string_uri_only(from);
 406                 sal_op_set_route(call->ping_op,sal_op_get_network_origin(op));
 407                 sal_op_set_user_pointer(call->ping_op,call);
 408                 sal_ping(call->ping_op,linphone_core_find_best_identity(lc,from,NULL),from_str);
 409                 ms_free(from_str);
 410         }
 411
 412         linphone_address_clean(from);
 413         linphone_core_get_local_ip(lc,linphone_address_get_domain(from),call->localip);
 414         linphone_call_init_common(call, from, to);
 415         call->log->call_id=ms_strdup(sal_op_get_call_id(op)); /*must be known at that time*/
 416         linphone_core_init_default_params(lc, &call->params);
 417         call->params.has_video &= !!lc->video_policy.automatically_accept;
 418         call->params.has_video &= linphone_core_media_description_contains_video_stream(sal_call_get_remote_media_description(op));
 419         switch (linphone_core_get_firewall_policy(call->core)) {
 420                 case LinphonePolicyUseIce:
 421                         call->ice_session = ice_session_new();
 422                         ice_session_set_role(call->ice_session, IR_Controlled);
 423                         linphone_core_update_ice_from_remote_media_description(call, sal_call_get_remote_media_description(op));
 424                         if (call->ice_session != NULL) {
 425                                 linphone_call_init_media_streams(call);
 426                                 linphone_call_start_media_streams_for_ice_gathering(call);
 427                                 if (linphone_core_gather_ice_candidates(call->core,call)<0) {
 428                                         /* Ice candidates gathering failed, proceed with the call anyway. */
 429                                         linphone_call_delete_ice_session(call);
 430                                         linphone_call_stop_media_streams_for_ice_gathering(call);
 431                                 }
 432                         }
 433                         break;
 434                 case LinphonePolicyUseStun:
 435                         call->ping_time=linphone_core_run_stun_tests(call->core,call);
 436                         /* No break to also destroy ice session in this case. */
 437                 default:
 438                         break;
 439         }
 440         call->camera_active=call->params.has_video;
 441
 442         discover_mtu(lc,linphone_address_get_domain(from));
 443         return call;
 444 }
 445
 446 /* this function is called internally to get rid of a call.
 447  It performs the following tasks:
 448  - remove the call from the internal list of calls
 449  - update the call logs accordingly
 450 */
 451
 452 static void linphone_call_set_terminated(LinphoneCall *call){
 453         LinphoneCore *lc=call->core;
 454
 455         linphone_core_update_allocated_audio_bandwidth(lc);
 456
 457         call->owns_call_log=FALSE;
 458         linphone_call_log_completed(call);
 459
 460
 461         if (call == lc->current_call){
 462                 ms_message("Resetting the current call");
 463                 lc->current_call=NULL;
 464         }
 465
 466         if (linphone_core_del_call(lc,call) != 0){
 467                 ms_error("Could not remove the call from the list !!!");
 468         }
 469
 470         if (ms_list_size(lc->calls)==0)
 471                 linphone_core_notify_all_friends(lc,lc->presence_mode);
 472
 473         linphone_core_conference_check_uninit(lc);
 474         if (call->ringing_beep){
 475                 linphone_core_stop_dtmf(lc);
 476                 call->ringing_beep=FALSE;
 477         }
 478         if (call->referer){
 479                 linphone_call_unref(call->referer);
 480                 call->referer=NULL;
 481         }
 482 }
 483
 484 void linphone_call_fix_call_parameters(LinphoneCall *call){
 485         call->params.has_video=call->current_params.has_video;
 486         call->params.media_encryption=call->current_params.media_encryption;
 487 }
 488
 489 const char *linphone_call_state_to_string(LinphoneCallState cs){
 490         switch (cs){
 491                 case LinphoneCallIdle:
 492                         return "LinphoneCallIdle";
 493                 case LinphoneCallIncomingReceived:
 494                         return "LinphoneCallIncomingReceived";
 495                 case LinphoneCallOutgoingInit:
 496                         return "LinphoneCallOutgoingInit";
 497                 case LinphoneCallOutgoingProgress:
 498                         return "LinphoneCallOutgoingProgress";
 499                 case LinphoneCallOutgoingRinging:
 500                         return "LinphoneCallOutgoingRinging";
 501                 case LinphoneCallOutgoingEarlyMedia:
 502                         return "LinphoneCallOutgoingEarlyMedia";
 503                 case LinphoneCallConnected:
 504                         return "LinphoneCallConnected";
 505                 case LinphoneCallStreamsRunning:
 506                         return "LinphoneCallStreamsRunning";
 507                 case LinphoneCallPausing:
 508                         return "LinphoneCallPausing";
 509                 case LinphoneCallPaused:
 510                         return "LinphoneCallPaused";
 511                 case LinphoneCallResuming:
 512                         return "LinphoneCallResuming";
 513                 case LinphoneCallRefered:
 514                         return "LinphoneCallRefered";
 515                 case LinphoneCallError:
 516                         return "LinphoneCallError";
 517                 case LinphoneCallEnd:
 518                         return "LinphoneCallEnd";
 519                 case LinphoneCallPausedByRemote:
 520                         return "LinphoneCallPausedByRemote";
 521                 case LinphoneCallUpdatedByRemote:
 522                         return "LinphoneCallUpdatedByRemote";
 523                 case LinphoneCallIncomingEarlyMedia:
 524                         return "LinphoneCallIncomingEarlyMedia";
 525                 case LinphoneCallUpdating:
 526                         return "LinphoneCallUpdating";
 527                 case LinphoneCallReleased:
 528                         return "LinphoneCallReleased";
 529         }
 530         return "undefined state";
 531 }
 532
 533 void linphone_call_set_state(LinphoneCall *call, LinphoneCallState cstate, const char *message){
 534         LinphoneCore *lc=call->core;
 535
 536         if (call->state!=cstate){
 537                 if (call->state==LinphoneCallEnd || call->state==LinphoneCallError){
 538                         if (cstate!=LinphoneCallReleased){
 539                                 ms_warning("Spurious call state change from %s to %s, ignored.",linphone_call_state_to_string(call->state),
 540                                    linphone_call_state_to_string(cstate));
 541                                 return;
 542                         }
 543                 }
 544                 ms_message("Call %p: moving from state %s to %s",call,linphone_call_state_to_string(call->state),
 545                            linphone_call_state_to_string(cstate));
 546                 if (cstate!=LinphoneCallRefered){
 547                         /*LinphoneCallRefered is rather an event, not a state.
 548                          Indeed it does not change the state of the call (still paused or running)*/
 549                         call->state=cstate;
 550                 }
 551                 if (cstate==LinphoneCallEnd || cstate==LinphoneCallError){
 552                         switch(call->reason){
 553                                 case LinphoneReasonDeclined:
 554                                         call->log->status=LinphoneCallDeclined;
 555                                         break;
 556                                 case LinphoneReasonNotAnswered:
 557                                         call->log->status=LinphoneCallMissed;
 558                                 break;
 559                                 default:
 560                                 break;
 561                         }
 562                         linphone_call_set_terminated (call);
 563                 }
 564                 if (cstate == LinphoneCallConnected) {
 565                         call->log->status=LinphoneCallSuccess;
 566                         call->media_start_time=time(NULL);
 567                 }
 568
 569                 if (lc->vtable.call_state_changed)
 570                         lc->vtable.call_state_changed(lc,call,cstate,message);
 571                 if (cstate==LinphoneCallReleased){
 572                         if (call->op!=NULL) {
 573                                 /* so that we cannot have anymore upcalls for SAL
 574                                  concerning this call*/
 575                                 sal_op_release(call->op);
 576                                 call->op=NULL;
 577                         }
 578                         linphone_call_unref(call);
 579                 }
 580         }
 581 }
 582
 583 static void linphone_call_destroy(LinphoneCall *obj)
 584 {
 585         linphone_call_delete_ice_session(obj);
 586         if (obj->op!=NULL) {
 587                 sal_op_release(obj->op);
 588                 obj->op=NULL;
 589         }
 590         if (obj->resultdesc!=NULL) {
 591                 sal_media_description_unref(obj->resultdesc);
 592                 obj->resultdesc=NULL;
 593         }
 594         if (obj->localdesc!=NULL) {
 595                 sal_media_description_unref(obj->localdesc);
 596                 obj->localdesc=NULL;
 597         }
 598         if (obj->ping_op) {
 599                 sal_op_release(obj->ping_op);
 600         }
 601         if (obj->refer_to){
 602                 ms_free(obj->refer_to);
 603         }
 604         if (obj->owns_call_log)
 605                 linphone_call_log_destroy(obj->log);
 606         if (obj->auth_token) {
 607                 ms_free(obj->auth_token);
 608         }
 609
 610         ms_free(obj);
 611 }
 612
 613 /**
 614  * @addtogroup call_control
 615  * @{
 616 **/
 617
 618 /**
 619  * Increments the call 's reference count.
 620  * An application that wishes to retain a pointer to call object
 621  * must use this function to unsure the pointer remains
 622  * valid. Once the application no more needs this pointer,
 623  * it must call linphone_call_unref().
 624 **/
 625 LinphoneCall * linphone_call_ref(LinphoneCall *obj){
 626         obj->refcnt++;
 627         return obj;
 628 }
 629
 630 /**
 631  * Decrements the call object reference count.
 632  * See linphone_call_ref().
 633 **/
 634 void linphone_call_unref(LinphoneCall *obj){
 635         obj->refcnt--;
 636         if (obj->refcnt==0){
 637                 linphone_call_destroy(obj);
 638         }
 639 }
 640
 641 /**
 642  * Returns current parameters associated to the call.
 643 **/
 644 const LinphoneCallParams * linphone_call_get_current_params(const LinphoneCall *call){
 645         return &call->current_params;
 646 }
 647
 648 static bool_t is_video_active(const SalStreamDescription *sd){
 649         return sd->rtp_port!=0 && sd->dir!=SalStreamInactive;
 650 }
 651
 652 /**
 653  * Returns call parameters proposed by remote.
 654  *
 655  * This is useful when receiving an incoming call, to know whether the remote party
 656  * supports video, encryption or whatever.
 657 **/
 658 const LinphoneCallParams * linphone_call_get_remote_params(LinphoneCall *call){
 659         LinphoneCallParams *cp=&call->remote_params;
 660         memset(cp,0,sizeof(*cp));
 661         if (call->op){
 662                 SalMediaDescription *md=sal_call_get_remote_media_description(call->op);
 663                 if (md){
 664                         SalStreamDescription *asd,*vsd,*secure_asd,*secure_vsd;
 665
 666                         asd=sal_media_description_find_stream(md,SalProtoRtpAvp,SalAudio);
 667                         vsd=sal_media_description_find_stream(md,SalProtoRtpAvp,SalVideo);
 668                         secure_asd=sal_media_description_find_stream(md,SalProtoRtpSavp,SalAudio);
 669                         secure_vsd=sal_media_description_find_stream(md,SalProtoRtpSavp,SalVideo);
 670                         if (secure_vsd){
 671                                 cp->has_video=is_video_active(secure_vsd);
 672                                 if (secure_asd || asd==NULL)
 673                                         cp->media_encryption=LinphoneMediaEncryptionSRTP;
 674                         }else if (vsd){
 675                                 cp->has_video=is_video_active(vsd);
 676                         }
 677                         return cp;
 678                 }
 679         }
 680         return NULL;
 681 }
 682
 683 /**
 684  * Returns the remote address associated to this call
 685  *
 686 **/
 687 const LinphoneAddress * linphone_call_get_remote_address(const LinphoneCall *call){
 688         return call->dir==LinphoneCallIncoming ? call->log->from : call->log->to;
 689 }
 690
 691 /**
 692  * Returns the remote address associated to this call as a string.
 693  *
 694  * The result string must be freed by user using ms_free().
 695 **/
 696 char *linphone_call_get_remote_address_as_string(const LinphoneCall *call){
 697         return linphone_address_as_string(linphone_call_get_remote_address(call));
 698 }
 699
 700 /**
 701  * Retrieves the call's current state.
 702 **/
 703 LinphoneCallState linphone_call_get_state(const LinphoneCall *call){
 704         return call->state;
 705 }
 706
 707 /**
 708  * Returns the reason for a call termination (either error or normal termination)
 709 **/
 710 LinphoneReason linphone_call_get_reason(const LinphoneCall *call){
 711         return call->reason;
 712 }
 713
 714 /**
 715  * Get the user_pointer in the LinphoneCall
 716  *
 717  * @ingroup call_control
 718  *
 719  * return user_pointer an opaque user pointer that can be retrieved at any time
 720 **/
 721 void *linphone_call_get_user_pointer(LinphoneCall *call)
 722 {
 723         return call->user_pointer;
 724 }
 725
 726 /**
 727  * Set the user_pointer in the LinphoneCall
 728  *
 729  * @ingroup call_control
 730  *
 731  * the user_pointer is an opaque user pointer that can be retrieved at any time in the LinphoneCall
 732 **/
 733 void linphone_call_set_user_pointer(LinphoneCall *call, void *user_pointer)
 734 {
 735         call->user_pointer = user_pointer;
 736 }
 737
 738 /**
 739  * Returns the call log associated to this call.
 740 **/
 741 LinphoneCallLog *linphone_call_get_call_log(const LinphoneCall *call){
 742         return call->log;
 743 }
 744
 745 /**
 746  * Returns the refer-to uri (if the call was transfered).
 747 **/
 748 const char *linphone_call_get_refer_to(const LinphoneCall *call){
 749         return call->refer_to;
 750 }
 751
 752 /**
 753  * Returns direction of the call (incoming or outgoing).
 754 **/
 755 LinphoneCallDir linphone_call_get_dir(const LinphoneCall *call){
 756         return call->log->dir;
 757 }
 758
 759 /**
 760  * Returns the far end's user agent description string, if available.
 761 **/
 762 const char *linphone_call_get_remote_user_agent(LinphoneCall *call){
 763         if (call->op){
 764                 return sal_op_get_remote_ua (call->op);
 765         }
 766         return NULL;
 767 }
 768
 769 /**
 770  * Returns true if this calls has received a transfer that has not been
 771  * executed yet.
 772  * Pending transfers are executed when this call is being paused or closed,
 773  * locally or by remote endpoint.
 774  * If the call is already paused while receiving the transfer request, the
 775  * transfer immediately occurs.
 776 **/
 777 bool_t linphone_call_has_transfer_pending(const LinphoneCall *call){
 778         return call->refer_pending;
 779 }
 780
 781 /**
 782  * Returns call's duration in seconds.
 783 **/
 784 int linphone_call_get_duration(const LinphoneCall *call){
 785         if (call->media_start_time==0) return 0;
 786         return time(NULL)-call->media_start_time;
 787 }
 788
 789 /**
 790  * Returns the call object this call is replacing, if any.
 791  * Call replacement can occur during call transfers.
 792  * By default, the core automatically terminates the replaced call and accept the new one.
 793  * This function allows the application to know whether a new incoming call is a one that replaces another one.
 794 **/
 795 LinphoneCall *linphone_call_get_replaced_call(LinphoneCall *call){
 796         SalOp *op=sal_call_get_replaces(call->op);
 797         if (op){
 798                 return (LinphoneCall*)sal_op_get_user_pointer(op);
 799         }
 800         return NULL;
 801 }
 802
 803 /**
 804  * Indicate whether camera input should be sent to remote end.
 805 **/
 806 void linphone_call_enable_camera (LinphoneCall *call, bool_t enable){
 807 #ifdef VIDEO_ENABLED
 808         if (call->videostream!=NULL && call->videostream->ticker!=NULL){
 809                 LinphoneCore *lc=call->core;
 810                 MSWebCam *nowebcam=get_nowebcam_device();
 811                 if (call->camera_active!=enable && lc->video_conf.device!=nowebcam){
 812                         video_stream_change_camera(call->videostream,
 813                                      enable ? lc->video_conf.device : nowebcam);
 814                 }
 815         }
 816         call->camera_active=enable;
 817 #endif
 818 }
 819
 820 /**
 821  * Take a photo of currently received video and write it into a jpeg file.
 822 **/
 823 int linphone_call_take_video_snapshot(LinphoneCall *call, const char *file){
 824 #ifdef VIDEO_ENABLED
 825         if (call->videostream!=NULL && call->videostream->jpegwriter!=NULL){
 826                 return ms_filter_call_method(call->videostream->jpegwriter,MS_JPEG_WRITER_TAKE_SNAPSHOT,(void*)file);
 827         }
 828         ms_warning("Cannot take snapshot: no currently running video stream on this call.");
 829         return -1;
 830 #endif
 831         return -1;
 832 }
 833
 834 /**
 835  * Returns TRUE if camera pictures are sent to the remote party.
 836 **/
 837 bool_t linphone_call_camera_enabled (const LinphoneCall *call){
 838         return call->camera_active;
 839 }
 840
 841 /**
 842  * Enable video stream.
 843 **/
 844 void linphone_call_params_enable_video(LinphoneCallParams *cp, bool_t enabled){
 845         cp->has_video=enabled;
 846 }
 847
 848 const PayloadType* linphone_call_params_get_used_audio_codec(const LinphoneCallParams *cp) {
 849         return cp->audio_codec;
 850 }
 851
 852 const PayloadType* linphone_call_params_get_used_video_codec(const LinphoneCallParams *cp) {
 853         return cp->video_codec;
 854 }
 855
 856 bool_t linphone_call_params_low_bandwidth_enabled(const LinphoneCallParams *cp) {
 857         return cp->low_bandwidth;
 858 }
 859 /**
 860  * Returns whether video is enabled.
 861 **/
 862 bool_t linphone_call_params_video_enabled(const LinphoneCallParams *cp){
 863         return cp->has_video;
 864 }
 865
 866 enum LinphoneMediaEncryption linphone_call_params_get_media_encryption(const LinphoneCallParams *cp) {
 867         return cp->media_encryption;
 868 }
 869
 870 void linphone_call_params_set_media_encryption(LinphoneCallParams *cp, enum LinphoneMediaEncryption e) {
 871         cp->media_encryption = e;
 872 }
 873
 874
 875 /**
 876  * Enable sending of real early media (during outgoing calls).
 877 **/
 878 void linphone_call_params_enable_early_media_sending(LinphoneCallParams *cp, bool_t enabled){
 879         cp->real_early_media=enabled;
 880 }
 881
 882 bool_t linphone_call_params_early_media_sending_enabled(const LinphoneCallParams *cp){
 883         return cp->real_early_media;
 884 }
 885
 886 /**
 887  * Returns true if the call is part of the locally managed conference.
 888 **/
 889 bool_t linphone_call_params_local_conference_mode(const LinphoneCallParams *cp){
 890         return cp->in_conference;
 891 }
 892
 893 /**
 894  * Refine bandwidth settings for this call by setting a bandwidth limit for audio streams.
 895  * As a consequence, codecs whose bitrates are not compatible with this limit won't be used.
 896 **/
 897 void linphone_call_params_set_audio_bandwidth_limit(LinphoneCallParams *cp, int bandwidth){
 898         cp->audio_bw=bandwidth;
 899 }
 900
 901 #ifdef VIDEO_ENABLED
 902 /**
 903  * Request remote side to send us a Video Fast Update.
 904 **/
 905 void linphone_call_send_vfu_request(LinphoneCall *call)
 906 {
 907         if (LinphoneCallStreamsRunning == linphone_call_get_state(call))
 908                 sal_call_send_vfu_request(call->op);
 909 }
 910 #endif
 911
 912 /**
 913  *
 914 **/
 915 LinphoneCallParams * linphone_call_params_copy(const LinphoneCallParams *cp){
 916         LinphoneCallParams *ncp=ms_new0(LinphoneCallParams,1);
 917         memcpy(ncp,cp,sizeof(LinphoneCallParams));
 918         return ncp;
 919 }
 920
 921 /**
 922  *
 923 **/
 924 void linphone_call_params_destroy(LinphoneCallParams *p){
 925         ms_free(p);
 926 }
 927
 928 /**
 929  * @}
 930 **/
 931
 932
 933 #ifdef TEST_EXT_RENDERER
 934 static void rendercb(void *data, const MSPicture *local, const MSPicture *remote){
 935         ms_message("rendercb, local buffer=%p, remote buffer=%p",
 936                    local ? local->planes[0] : NULL, remote? remote->planes[0] : NULL);
 937 }
 938 #endif
 939
 940 #ifdef VIDEO_ENABLED
 941 static void video_stream_event_cb(void *user_pointer, const MSFilter *f, const unsigned int event_id, const void *args){
 942     LinphoneCall* call = (LinphoneCall*) user_pointer;
 943         ms_warning("In linphonecall.c: video_stream_event_cb");
 944         switch (event_id) {
 945                 case MS_VIDEO_DECODER_DECODING_ERRORS:
 946                         ms_warning("Case is MS_VIDEO_DECODER_DECODING_ERRORS");
 947                         linphone_call_send_vfu_request(call);
 948                         break;
 949         case MS_VIDEO_DECODER_FIRST_IMAGE_DECODED:
 950             ms_message("First video frame decoded successfully");
 951             if (call->nextVideoFrameDecoded._func != NULL)
 952                 call->nextVideoFrameDecoded._func(call, call->nextVideoFrameDecoded._user_data);
 953             break;
 954                 default:
 955                         ms_warning("Unhandled event %i", event_id);
 956                         break;
 957         }
 958 }
 959 #endif
 960
 961 void linphone_call_set_next_video_frame_decoded_callback(LinphoneCall *call, LinphoneCallCbFunc cb, void* user_data) {
 962     call->nextVideoFrameDecoded._func = cb;
 963     call->nextVideoFrameDecoded._user_data = user_data;
 964 #ifdef VIDEO_ENABLED
 965     ms_filter_call_method_noarg(call->videostream->decoder, MS_VIDEO_DECODER_RESET_FIRST_IMAGE_NOTIFICATION);
 966 #endif
 967 }
 968
 969 void linphone_call_init_audio_stream(LinphoneCall *call){
 970         LinphoneCore *lc=call->core;
 971         AudioStream *audiostream;
 972         int dscp;
 973
 974         if (call->audiostream != NULL) return;
 975         call->audiostream=audiostream=audio_stream_new(call->audio_port,call->audio_port+1,linphone_core_ipv6_enabled(lc));
 976         dscp=linphone_core_get_audio_dscp(lc);
 977         if (dscp!=-1)
 978                 audio_stream_set_dscp(audiostream,dscp);
 979         if (linphone_core_echo_limiter_enabled(lc)){
 980                 const char *type=lp_config_get_string(lc->config,"sound","el_type","mic");
 981                 if (strcasecmp(type,"mic")==0)
 982                         audio_stream_enable_echo_limiter(audiostream,ELControlMic);
 983                 else if (strcasecmp(type,"full")==0)
 984                         audio_stream_enable_echo_limiter(audiostream,ELControlFull);
 985         }
 986         audio_stream_enable_gain_control(audiostream,TRUE);
 987         if (linphone_core_echo_cancellation_enabled(lc)){
 988                 int len,delay,framesize;
 989                 const char *statestr=lp_config_get_string(lc->config,"sound","ec_state",NULL);
 990                 len=lp_config_get_int(lc->config,"sound","ec_tail_len",0);
 991                 delay=lp_config_get_int(lc->config,"sound","ec_delay",0);
 992                 framesize=lp_config_get_int(lc->config,"sound","ec_framesize",0);
 993                 audio_stream_set_echo_canceller_params(audiostream,len,delay,framesize);
 994                 if (statestr && audiostream->ec){
 995                         ms_filter_call_method(audiostream->ec,MS_ECHO_CANCELLER_SET_STATE_STRING,(void*)statestr);
 996                 }
 997         }
 998         audio_stream_enable_automatic_gain_control(audiostream,linphone_core_agc_enabled(lc));
 999         {
1000                 int enabled=lp_config_get_int(lc->config,"sound","noisegate",0);
1001                 audio_stream_enable_noise_gate(audiostream,enabled);
1002         }
1003
1004         audio_stream_set_features(audiostream,linphone_core_get_audio_features(lc));
1005
1006         if (lc->rtptf){
1007                 RtpTransport *artp=lc->rtptf->audio_rtp_func(lc->rtptf->audio_rtp_func_data, call->audio_port);
1008                 RtpTransport *artcp=lc->rtptf->audio_rtcp_func(lc->rtptf->audio_rtcp_func_data, call->audio_port+1);
1009                 rtp_session_set_transports(audiostream->session,artp,artcp);
1010         }
1011         if ((linphone_core_get_firewall_policy(lc) == LinphonePolicyUseIce) && (call->ice_session != NULL)){
1012                 rtp_session_set_pktinfo(audiostream->session, TRUE);
1013                 rtp_session_set_symmetric_rtp(audiostream->session, FALSE);
1014                 if (ice_session_check_list(call->ice_session, 0) == NULL) {
1015                         ice_session_add_check_list(call->ice_session, ice_check_list_new());
1016                 }
1017                 audiostream->ice_check_list = ice_session_check_list(call->ice_session, 0);
1018                 ice_check_list_set_rtp_session(audiostream->ice_check_list, audiostream->session);
1019         }
1020
1021         call->audiostream_app_evq = ortp_ev_queue_new();
1022         rtp_session_register_event_queue(audiostream->session,call->audiostream_app_evq);
1023 }
1024
1025 void linphone_call_init_video_stream(LinphoneCall *call){
1026 #ifdef VIDEO_ENABLED
1027         LinphoneCore *lc=call->core;
1028
1029         if (!call->params.has_video) {
1030                 linphone_call_stop_video_stream(call);
1031                 return;
1032         }
1033         if (call->videostream != NULL) return;
1034         if ((lc->video_conf.display || lc->video_conf.capture) && call->params.has_video){
1035                 int video_recv_buf_size=lp_config_get_int(lc->config,"video","recv_buf_size",0);
1036                 int dscp=linphone_core_get_video_dscp(lc);
1037
1038                 call->videostream=video_stream_new(call->video_port,call->video_port+1,linphone_core_ipv6_enabled(lc));
1039                 if (dscp!=-1)
1040                         video_stream_set_dscp(call->videostream,dscp);
1041                 video_stream_enable_display_filter_auto_rotate(call->videostream, lp_config_get_int(lc->config,"video","display_filter_auto_rotate",0));
1042                 if (video_recv_buf_size>0) rtp_session_set_recv_buf_size(call->videostream->session,video_recv_buf_size);
1043
1044                 if( lc->video_conf.displaytype != NULL)
1045                         video_stream_set_display_filter_name(call->videostream,lc->video_conf.displaytype);
1046                 video_stream_set_event_callback(call->videostream,video_stream_event_cb, call);
1047                 if (lc->rtptf){
1048                         RtpTransport *vrtp=lc->rtptf->video_rtp_func(lc->rtptf->video_rtp_func_data, call->video_port);
1049                         RtpTransport *vrtcp=lc->rtptf->video_rtcp_func(lc->rtptf->video_rtcp_func_data, call->video_port+1);
1050                         rtp_session_set_transports(call->videostream->session,vrtp,vrtcp);
1051                 }
1052                 if ((linphone_core_get_firewall_policy(lc) == LinphonePolicyUseIce) && (call->ice_session != NULL)){
1053                         rtp_session_set_pktinfo(call->videostream->session, TRUE);
1054                         rtp_session_set_symmetric_rtp(call->videostream->session, FALSE);
1055                         if (ice_session_check_list(call->ice_session, 1) == NULL) {
1056                                 ice_session_add_check_list(call->ice_session, ice_check_list_new());
1057                         }
1058                         call->videostream->ice_check_list = ice_session_check_list(call->ice_session, 1);
1059                         ice_check_list_set_rtp_session(call->videostream->ice_check_list, call->videostream->session);
1060                 }
1061                 call->videostream_app_evq = ortp_ev_queue_new();
1062                 rtp_session_register_event_queue(call->videostream->session,call->videostream_app_evq);
1063 #ifdef TEST_EXT_RENDERER
1064                 video_stream_set_render_callback(call->videostream,rendercb,NULL);
1065 #endif
1066         }
1067 #else
1068         call->videostream=NULL;
1069 #endif
1070 }
1071
1072 void linphone_call_init_media_streams(LinphoneCall *call){
1073         linphone_call_init_audio_stream(call);
1074         linphone_call_init_video_stream(call);
1075 }
1076
1077
1078 static int dtmf_tab[16]={'0','1','2','3','4','5','6','7','8','9','*','#','A','B','C','D'};
1079
1080 static void linphone_core_dtmf_received(LinphoneCore *lc, int dtmf){
1081         if (dtmf<0 || dtmf>15){
1082                 ms_warning("Bad dtmf value %i",dtmf);
1083                 return;
1084         }
1085         if (lc->vtable.dtmf_received != NULL)
1086                 lc->vtable.dtmf_received(lc, linphone_core_get_current_call(lc), dtmf_tab[dtmf]);
1087 }
1088
1089 static void parametrize_equalizer(LinphoneCore *lc, AudioStream *st){
1090         if (st->equalizer){
1091                 MSFilter *f=st->equalizer;
1092                 int enabled=lp_config_get_int(lc->config,"sound","eq_active",0);
1093                 const char *gains=lp_config_get_string(lc->config,"sound","eq_gains",NULL);
1094                 ms_filter_call_method(f,MS_EQUALIZER_SET_ACTIVE,&enabled);
1095                 if (enabled){
1096                         if (gains){
1097                                 do{
1098                                         int bytes;
1099                                         MSEqualizerGain g;
1100                                         if (sscanf(gains,"%f:%f:%f %n",&g.frequency,&g.gain,&g.width,&bytes)==3){
1101                                                 ms_message("Read equalizer gains: %f(~%f) --> %f",g.frequency,g.width,g.gain);
1102                                                 ms_filter_call_method(f,MS_EQUALIZER_SET_GAIN,&g);
1103                                                 gains+=bytes;
1104                                         }else break;
1105                                 }while(1);
1106                         }
1107                 }
1108         }
1109 }
1110
1111 void _post_configure_audio_stream(AudioStream *st, LinphoneCore *lc, bool_t muted){
1112         float mic_gain=lp_config_get_float(lc->config,"sound","mic_gain",1);
1113         float thres = 0;
1114         float recv_gain;
1115         float ng_thres=lp_config_get_float(lc->config,"sound","ng_thres",0.05);
1116         float ng_floorgain=lp_config_get_float(lc->config,"sound","ng_floorgain",0);
1117         int dc_removal=lp_config_get_int(lc->config,"sound","dc_removal",0);
1118
1119         if (!muted)
1120                 audio_stream_set_mic_gain(st,mic_gain);
1121         else
1122                 audio_stream_set_mic_gain(st,0);
1123
1124         recv_gain = lc->sound_conf.soft_play_lev;
1125         if (recv_gain != 0) {
1126                 linphone_core_set_playback_gain_db (lc,recv_gain);
1127         }
1128
1129         if (st->volsend){
1130                 ms_filter_call_method(st->volsend,MS_VOLUME_REMOVE_DC,&dc_removal);
1131                 float speed=lp_config_get_float(lc->config,"sound","el_speed",-1);
1132                 thres=lp_config_get_float(lc->config,"sound","el_thres",-1);
1133                 float force=lp_config_get_float(lc->config,"sound","el_force",-1);
1134                 int sustain=lp_config_get_int(lc->config,"sound","el_sustain",-1);
1135                 float transmit_thres=lp_config_get_float(lc->config,"sound","el_transmit_thres",-1);
1136                 MSFilter *f=NULL;
1137                 f=st->volsend;
1138                 if (speed==-1) speed=0.03;
1139                 if (force==-1) force=25;
1140                 ms_filter_call_method(f,MS_VOLUME_SET_EA_SPEED,&speed);
1141                 ms_filter_call_method(f,MS_VOLUME_SET_EA_FORCE,&force);
1142                 if (thres!=-1)
1143                         ms_filter_call_method(f,MS_VOLUME_SET_EA_THRESHOLD,&thres);
1144                 if (sustain!=-1)
1145                         ms_filter_call_method(f,MS_VOLUME_SET_EA_SUSTAIN,&sustain);
1146                 if (transmit_thres!=-1)
1147                                 ms_filter_call_method(f,MS_VOLUME_SET_EA_TRANSMIT_THRESHOLD,&transmit_thres);
1148
1149                 ms_filter_call_method(st->volsend,MS_VOLUME_SET_NOISE_GATE_THRESHOLD,&ng_thres);
1150                 ms_filter_call_method(st->volsend,MS_VOLUME_SET_NOISE_GATE_FLOORGAIN,&ng_floorgain);
1151         }
1152         if (st->volrecv){
1153                 /* parameters for a limited noise-gate effect, using echo limiter threshold */
1154                 float floorgain = 1/mic_gain;
1155                 int spk_agc=lp_config_get_int(lc->config,"sound","speaker_agc_enabled",0);
1156                 ms_filter_call_method(st->volrecv, MS_VOLUME_ENABLE_AGC, &spk_agc);
1157                 ms_filter_call_method(st->volrecv,MS_VOLUME_SET_NOISE_GATE_THRESHOLD,&ng_thres);
1158                 ms_filter_call_method(st->volrecv,MS_VOLUME_SET_NOISE_GATE_FLOORGAIN,&floorgain);
1159         }
1160         parametrize_equalizer(lc,st);
1161 }
1162
1163 static void post_configure_audio_streams(LinphoneCall*call){
1164         AudioStream *st=call->audiostream;
1165         LinphoneCore *lc=call->core;
1166         _post_configure_audio_stream(st,lc,call->audio_muted);
1167         if (lc->vtable.dtmf_received!=NULL){
1168                 /* replace by our default action*/
1169                 audio_stream_play_received_dtmfs(call->audiostream,FALSE);
1170                 /*rtp_session_signal_connect(call->audiostream->session,"telephone-event",(RtpCallback)linphone_core_dtmf_received,(unsigned long)lc);*/
1171         }
1172 }
1173
1174 static RtpProfile *make_profile(LinphoneCall *call, const SalMediaDescription *md, const SalStreamDescription *desc, int *used_pt){
1175         int bw;
1176         const MSList *elem;
1177         RtpProfile *prof=rtp_profile_new("Call profile");
1178         bool_t first=TRUE;
1179         int remote_bw=0;
1180         LinphoneCore *lc=call->core;
1181         int up_ptime=0;
1182         const LinphoneCallParams *params=&call->params;
1183         *used_pt=-1;
1184
1185         for(elem=desc->payloads;elem!=NULL;elem=elem->next){
1186                 PayloadType *pt=(PayloadType*)elem->data;
1187                 int number;
1188
1189                 if ((pt->flags & PAYLOAD_TYPE_FLAG_CAN_SEND) && first) {
1190                         if (desc->type==SalAudio){
1191                                 linphone_core_update_allocated_audio_bandwidth_in_call(call,pt);
1192                                 if (params->up_ptime)
1193                                         up_ptime=params->up_ptime;
1194                                 else up_ptime=linphone_core_get_upload_ptime(lc);
1195                         }
1196                         *used_pt=payload_type_get_number(pt);
1197                         first=FALSE;
1198                 }
1199                 if (desc->bandwidth>0) remote_bw=desc->bandwidth;
1200                 else if (md->bandwidth>0) {
1201                         /*case where b=AS is given globally, not per stream*/
1202                         remote_bw=md->bandwidth;
1203                         if (desc->type==SalVideo){
1204                                 remote_bw=get_video_bandwidth(remote_bw,call->audio_bw);
1205                         }
1206                 }
1207
1208                 if (desc->type==SalAudio){
1209                         int audio_bw=call->audio_bw;
1210                         if (params->up_bw){
1211                                 if (params->up_bw< audio_bw)
1212                                         audio_bw=params->up_bw;
1213                         }
1214                         bw=get_min_bandwidth(audio_bw,remote_bw);
1215                 }else bw=get_min_bandwidth(get_video_bandwidth(linphone_core_get_upload_bandwidth (lc),call->audio_bw),remote_bw);
1216                 if (bw>0) pt->normal_bitrate=bw*1000;
1217                 else if (desc->type==SalAudio){
1218                         pt->normal_bitrate=-1;
1219                 }
1220                 if (desc->ptime>0){
1221                         up_ptime=desc->ptime;
1222                 }
1223                 if (up_ptime>0){
1224                         char tmp[40];
1225                         snprintf(tmp,sizeof(tmp),"ptime=%i",up_ptime);
1226                         payload_type_append_send_fmtp(pt,tmp);
1227                 }
1228                 number=payload_type_get_number(pt);
1229                 if (rtp_profile_get_payload(prof,number)!=NULL){
1230                         ms_warning("A payload type with number %i already exists in profile !",number);
1231                 }else
1232                         rtp_profile_set_payload(prof,number,pt);
1233         }
1234         return prof;
1235 }
1236
1237
1238 static void setup_ring_player(LinphoneCore *lc, LinphoneCall *call){
1239         int pause_time=3000;
1240         audio_stream_play(call->audiostream,lc->sound_conf.ringback_tone);
1241         ms_filter_call_method(call->audiostream->soundread,MS_FILE_PLAYER_LOOP,&pause_time);
1242 }
1243
1244 static bool_t linphone_call_sound_resources_available(LinphoneCall *call){
1245         LinphoneCore *lc=call->core;
1246         LinphoneCall *current=linphone_core_get_current_call(lc);
1247         return !linphone_core_is_in_conference(lc) &&
1248                 (current==NULL || current==call);
1249 }
1250 static int find_crypto_index_from_tag(const SalSrtpCryptoAlgo crypto[],unsigned char tag) {
1251     int i;
1252     for(i=0; i<SAL_CRYPTO_ALGO_MAX; i++) {
1253         if (crypto[i].tag == tag) {
1254             return i;
1255         }
1256     }
1257     return -1;
1258 }
1259 static void linphone_call_start_audio_stream(LinphoneCall *call, const char *cname, bool_t muted, bool_t send_ringbacktone, bool_t use_arc){
1260         LinphoneCore *lc=call->core;
1261         int used_pt=-1;
1262         char rtcp_tool[128]={0};
1263         snprintf(rtcp_tool,sizeof(rtcp_tool)-1,"%s-%s",linphone_core_get_user_agent_name(),linphone_core_get_user_agent_version());
1264         /* look for savp stream first */
1265         const SalStreamDescription *stream=sal_media_description_find_stream(call->resultdesc,
1266                                                 SalProtoRtpSavp,SalAudio);
1267         /* no savp audio stream, use avp */
1268         if (!stream)
1269                 stream=sal_media_description_find_stream(call->resultdesc,
1270                                                 SalProtoRtpAvp,SalAudio);
1271
1272         if (stream && stream->dir!=SalStreamInactive && stream->rtp_port!=0){
1273                 MSSndCard *playcard=lc->sound_conf.lsd_card ?
1274                         lc->sound_conf.lsd_card : lc->sound_conf.play_sndcard;
1275                 MSSndCard *captcard=lc->sound_conf.capt_sndcard;
1276                 const char *playfile=lc->play_file;
1277                 const char *recfile=lc->rec_file;
1278                 call->audio_profile=make_profile(call,call->resultdesc,stream,&used_pt);
1279                 bool_t use_ec;
1280
1281                 if (used_pt!=-1){
1282                         call->current_params.audio_codec = rtp_profile_get_payload(call->audio_profile, used_pt);
1283                         if (playcard==NULL) {
1284                                 ms_warning("No card defined for playback !");
1285                         }
1286                         if (captcard==NULL) {
1287                                 ms_warning("No card defined for capture !");
1288                         }
1289                         /*Replace soundcard filters by inactive file players or recorders
1290                          when placed in recvonly or sendonly mode*/
1291                         if (stream->rtp_port==0 || stream->dir==SalStreamRecvOnly){
1292                                 captcard=NULL;
1293                                 playfile=NULL;
1294                         }else if (stream->dir==SalStreamSendOnly){
1295                                 playcard=NULL;
1296                                 captcard=NULL;
1297                                 recfile=NULL;
1298                                 /*And we will eventually play "playfile" if set by the user*/
1299                                 /*playfile=NULL;*/
1300                         }
1301                         if (send_ringbacktone){
1302                                 captcard=NULL;
1303                                 playfile=NULL;/* it is setup later*/
1304                         }
1305                         /*if playfile are supplied don't use soundcards*/
1306                         if (lc->use_files) {
1307                                 captcard=NULL;
1308                                 playcard=NULL;
1309                         }
1310                         if (call->params.in_conference){
1311                                 /* first create the graph without soundcard resources*/
1312                                 captcard=playcard=NULL;
1313                         }
1314                         if (!linphone_call_sound_resources_available(call)){
1315                                 ms_message("Sound resources are used by another call, not using soundcard.");
1316                                 captcard=playcard=NULL;
1317                         }
1318                         use_ec=captcard==NULL ? FALSE : linphone_core_echo_cancellation_enabled(lc);
1319                         if (playcard &&  stream->max_rate>0) ms_snd_card_set_preferred_sample_rate(playcard, stream->max_rate);
1320                         if (captcard &&  stream->max_rate>0) ms_snd_card_set_preferred_sample_rate(captcard, stream->max_rate);
1321                         audio_stream_enable_adaptive_bitrate_control(call->audiostream,use_arc);
1322                         audio_stream_enable_adaptive_jittcomp(call->audiostream, linphone_core_audio_adaptive_jittcomp_enabled(lc));
1323                         audio_stream_start_full(
1324                                 call->audiostream,
1325                                 call->audio_profile,
1326                                 stream->rtp_addr[0]!='\0' ? stream->rtp_addr : call->resultdesc->addr,
1327                                 stream->rtp_port,
1328                                 stream->rtcp_addr[0]!='\0' ? stream->rtcp_addr : call->resultdesc->addr,
1329                                 linphone_core_rtcp_enabled(lc) ? (stream->rtcp_port) : 0,
1330                                 used_pt,
1331                                 linphone_core_get_audio_jittcomp(lc),
1332                                 playfile,
1333                                 recfile,
1334                                 playcard,
1335                                 captcard,
1336                                 use_ec
1337                                 );
1338                         post_configure_audio_streams(call);
1339                         if (muted && !send_ringbacktone){
1340                                 audio_stream_set_mic_gain(call->audiostream,0);
1341                         }
1342                         if (stream->dir==SalStreamSendOnly && playfile!=NULL){
1343                                 int pause_time=500;
1344                                 ms_filter_call_method(call->audiostream->soundread,MS_FILE_PLAYER_LOOP,&pause_time);
1345                         }
1346                         if (send_ringbacktone){
1347                                 setup_ring_player(lc,call);
1348                         }
1349                         audio_stream_set_rtcp_information(call->audiostream, cname, rtcp_tool);
1350
1351             /* valid local tags are > 0 */
1352                         if (stream->proto == SalProtoRtpSavp) {
1353                 const SalStreamDescription *local_st_desc=sal_media_description_find_stream(call->localdesc,
1354                                                                                             SalProtoRtpSavp,SalAudio);
1355                 int crypto_idx = find_crypto_index_from_tag(local_st_desc->crypto, stream->crypto_local_tag);
1356
1357                 if (crypto_idx >= 0) {
1358                     audio_stream_enable_strp(
1359                                              call->audiostream,
1360                                              stream->crypto[0].algo,
1361                                              local_st_desc->crypto[crypto_idx].master_key,
1362                                              stream->crypto[0].master_key);
1363                     call->audiostream_encrypted=TRUE;
1364                 } else {
1365                     ms_warning("Failed to find local crypto algo with tag: %d", stream->crypto_local_tag);
1366                     call->audiostream_encrypted=FALSE;
1367                 }
1368                         }else call->audiostream_encrypted=FALSE;
1369                         if (call->params.in_conference){
1370                                 /*transform the graph to connect it to the conference filter */
1371                                 bool_t mute=stream->dir==SalStreamRecvOnly;
1372                                 linphone_call_add_to_conf(call, mute);
1373                         }
1374                         call->current_params.in_conference=call->params.in_conference;
1375                         call->current_params.low_bandwidth=call->params.low_bandwidth;
1376                 }else ms_warning("No audio stream accepted ?");
1377         }
1378 }
1379
1380 static void linphone_call_start_video_stream(LinphoneCall *call, const char *cname,bool_t all_inputs_muted){
1381 #ifdef VIDEO_ENABLED
1382         LinphoneCore *lc=call->core;
1383         int used_pt=-1;
1384         /* look for savp stream first */
1385         const SalStreamDescription *vstream=sal_media_description_find_stream(call->resultdesc,
1386                                                 SalProtoRtpSavp,SalVideo);
1387         char rtcp_tool[128]={0};
1388         snprintf(rtcp_tool,sizeof(rtcp_tool)-1,"%s-%s",linphone_core_get_user_agent_name(),linphone_core_get_user_agent_version());
1389
1390         /* no savp audio stream, use avp */
1391         if (!vstream)
1392                 vstream=sal_media_description_find_stream(call->resultdesc,
1393                                                 SalProtoRtpAvp,SalVideo);
1394
1395         /* shutdown preview */
1396         if (lc->previewstream!=NULL) {
1397                 video_preview_stop(lc->previewstream);
1398                 lc->previewstream=NULL;
1399         }
1400
1401         if (vstream!=NULL && vstream->dir!=SalStreamInactive && vstream->rtp_port!=0) {
1402                 const char *rtp_addr=vstream->rtp_addr[0]!='\0' ? vstream->rtp_addr : call->resultdesc->addr;
1403                 const char *rtcp_addr=vstream->rtcp_addr[0]!='\0' ? vstream->rtcp_addr : call->resultdesc->addr;
1404                 call->video_profile=make_profile(call,call->resultdesc,vstream,&used_pt);
1405                 if (used_pt!=-1){
1406                         call->current_params.video_codec = rtp_profile_get_payload(call->video_profile, used_pt);
1407                         VideoStreamDir dir=VideoStreamSendRecv;
1408                         MSWebCam *cam=lc->video_conf.device;
1409                         bool_t is_inactive=FALSE;
1410
1411                         call->current_params.has_video=TRUE;
1412
1413                         video_stream_enable_adaptive_bitrate_control(call->videostream,
1414                                                                   linphone_core_adaptive_rate_control_enabled(lc));
1415                         video_stream_enable_adaptive_jittcomp(call->videostream, linphone_core_video_adaptive_jittcomp_enabled(lc));
1416                         video_stream_set_sent_video_size(call->videostream,linphone_core_get_preferred_video_size(lc));
1417                         video_stream_enable_self_view(call->videostream,lc->video_conf.selfview);
1418                         if (lc->video_window_id!=0)
1419                                 video_stream_set_native_window_id(call->videostream,lc->video_window_id);
1420                         if (lc->preview_window_id!=0)
1421                                 video_stream_set_native_preview_window_id (call->videostream,lc->preview_window_id);
1422                         video_stream_use_preview_video_window (call->videostream,lc->use_preview_window);
1423
1424                         if (vstream->dir==SalStreamSendOnly && lc->video_conf.capture ){
1425                                 cam=get_nowebcam_device();
1426                                 dir=VideoStreamSendOnly;
1427                         }else if (vstream->dir==SalStreamRecvOnly && lc->video_conf.display ){
1428                                 dir=VideoStreamRecvOnly;
1429                         }else if (vstream->dir==SalStreamSendRecv){
1430                                 if (lc->video_conf.display && lc->video_conf.capture)
1431                                         dir=VideoStreamSendRecv;
1432                                 else if (lc->video_conf.display)
1433                                         dir=VideoStreamRecvOnly;
1434                                 else
1435                                         dir=VideoStreamSendOnly;
1436                         }else{
1437                                 ms_warning("video stream is inactive.");
1438                                 /*either inactive or incompatible with local capabilities*/
1439                                 is_inactive=TRUE;
1440                         }
1441                         if (call->camera_active==FALSE || all_inputs_muted){
1442                                 cam=get_nowebcam_device();
1443                         }
1444                         if (!is_inactive){
1445                                 call->log->video_enabled = TRUE;
1446                                 video_stream_set_direction (call->videostream, dir);
1447                                 ms_message("%s lc rotation:%d\n", __FUNCTION__, lc->device_rotation);
1448                                 video_stream_set_device_rotation(call->videostream, lc->device_rotation);
1449                                 video_stream_start(call->videostream,
1450                                         call->video_profile, rtp_addr, vstream->rtp_port,
1451                                         rtcp_addr, linphone_core_rtcp_enabled(lc) ? (vstream->rtcp_port) : 0,
1452                                         used_pt, linphone_core_get_video_jittcomp(lc), cam);
1453                                 video_stream_set_rtcp_information(call->videostream, cname,rtcp_tool);
1454                         }
1455
1456                         if (vstream->proto == SalProtoRtpSavp) {
1457                                 const SalStreamDescription *local_st_desc=sal_media_description_find_stream(call->localdesc,
1458                                                 SalProtoRtpSavp,SalVideo);
1459
1460                                 video_stream_enable_strp(
1461                                         call->videostream,
1462                                         vstream->crypto[0].algo,
1463                                         local_st_desc->crypto[0].master_key,
1464                                         vstream->crypto[0].master_key
1465                                         );
1466                                 call->videostream_encrypted=TRUE;
1467                         }else{
1468                                 call->videostream_encrypted=FALSE;
1469                         }
1470                 }else ms_warning("No video stream accepted.");
1471         }else{
1472                 ms_warning("No valid video stream defined.");
1473         }
1474 #endif
1475 }
1476
1477 void linphone_call_start_media_streams(LinphoneCall *call, bool_t all_inputs_muted, bool_t send_ringbacktone){
1478         LinphoneCore *lc=call->core;
1479
1480         call->current_params.audio_codec = NULL;
1481         call->current_params.video_codec = NULL;
1482
1483         LinphoneAddress *me=linphone_core_get_primary_contact_parsed(lc);
1484         char *cname;
1485         bool_t use_arc=linphone_core_adaptive_rate_control_enabled(lc);
1486 #ifdef VIDEO_ENABLED
1487         const SalStreamDescription *vstream=sal_media_description_find_stream(call->resultdesc,
1488                                                         SalProtoRtpAvp,SalVideo);
1489 #endif
1490
1491         if ((call->audiostream == NULL) && (call->videostream == NULL)) {
1492                 ms_fatal("start_media_stream() called without prior init !");
1493                 return;
1494         }
1495         cname=linphone_address_as_string_uri_only(me);
1496
1497 #if defined(VIDEO_ENABLED)
1498         if (vstream!=NULL && vstream->dir!=SalStreamInactive && vstream->payloads!=NULL){
1499                 /*when video is used, do not make adaptive rate control on audio, it is stupid.*/
1500                 use_arc=FALSE;
1501         }
1502 #endif
1503         if (call->audiostream!=NULL) {
1504                 linphone_call_start_audio_stream(call,cname,all_inputs_muted,send_ringbacktone,use_arc);
1505         }
1506         call->current_params.has_video=FALSE;
1507         if (call->videostream!=NULL) {
1508                 linphone_call_start_video_stream(call,cname,all_inputs_muted);
1509         }
1510
1511         call->all_muted=all_inputs_muted;
1512         call->playing_ringbacktone=send_ringbacktone;
1513         call->up_bw=linphone_core_get_upload_bandwidth(lc);
1514
1515         if (call->params.media_encryption==LinphoneMediaEncryptionZRTP) {
1516                 OrtpZrtpParams params;
1517                 /*will be set later when zrtp is activated*/
1518                 call->current_params.media_encryption=LinphoneMediaEncryptionNone;
1519
1520                 params.zid_file=lc->zrtp_secrets_cache;
1521                 audio_stream_enable_zrtp(call->audiostream,&params);
1522         }else if (call->params.media_encryption==LinphoneMediaEncryptionSRTP){
1523                 call->current_params.media_encryption=linphone_call_are_all_streams_encrypted(call) ?
1524                         LinphoneMediaEncryptionSRTP : LinphoneMediaEncryptionNone;
1525         }
1526
1527         /*also reflect the change if the "wished" params, in order to avoid to propose SAVP or video again
1528          * further in the call, for example during pause,resume, conferencing reINVITEs*/
1529         linphone_call_fix_call_parameters(call);
1530         if ((call->ice_session != NULL) && (ice_session_state(call->ice_session) != IS_Completed)) {
1531                 ice_session_start_connectivity_checks(call->ice_session);
1532         }
1533
1534         goto end;
1535         end:
1536                 ms_free(cname);
1537                 linphone_address_destroy(me);
1538 }
1539
1540 void linphone_call_start_media_streams_for_ice_gathering(LinphoneCall *call){
1541         audio_stream_prepare_sound(call->audiostream, NULL, NULL);
1542 #ifdef VIDEO_ENABLED
1543         if (call->videostream) {
1544                 video_stream_prepare_video(call->videostream);
1545         }
1546 #endif
1547 }
1548
1549 void linphone_call_stop_media_streams_for_ice_gathering(LinphoneCall *call){
1550         audio_stream_unprepare_sound(call->audiostream);
1551 #ifdef VIDEO_ENABLED
1552         if (call->videostream) {
1553                 video_stream_unprepare_video(call->videostream);
1554         }
1555 #endif
1556 }
1557
1558 void linphone_call_delete_ice_session(LinphoneCall *call){
1559         if (call->ice_session != NULL) {
1560                 ice_session_destroy(call->ice_session);
1561                 call->ice_session = NULL;
1562                 if (call->audiostream != NULL) call->audiostream->ice_check_list = NULL;
1563                 if (call->videostream != NULL) call->videostream->ice_check_list = NULL;
1564                 call->stats[LINPHONE_CALL_STATS_AUDIO].ice_state = LinphoneIceStateNotActivated;
1565                 call->stats[LINPHONE_CALL_STATS_VIDEO].ice_state = LinphoneIceStateNotActivated;
1566         }
1567 }
1568
1569 static void linphone_call_log_fill_stats(LinphoneCallLog *log, AudioStream *st){
1570         audio_stream_get_local_rtp_stats (st,&log->local_stats);
1571         log->quality=audio_stream_get_average_quality_rating(st);
1572 }
1573
1574 void linphone_call_stop_audio_stream(LinphoneCall *call) {
1575         if (call->audiostream!=NULL) {
1576                 rtp_session_unregister_event_queue(call->audiostream->session,call->audiostream_app_evq);
1577                 ortp_ev_queue_flush(call->audiostream_app_evq);
1578                 ortp_ev_queue_destroy(call->audiostream_app_evq);
1579                 call->audiostream_app_evq=NULL;
1580
1581                 if (call->audiostream->ec){
1582                         const char *state_str=NULL;
1583                         ms_filter_call_method(call->audiostream->ec,MS_ECHO_CANCELLER_GET_STATE_STRING,&state_str);
1584                         if (state_str){
1585                                 ms_message("Writing echo canceler state, %i bytes",(int)strlen(state_str));
1586                                 lp_config_set_string(call->core->config,"sound","ec_state",state_str);
1587                         }
1588                 }
1589                 linphone_call_log_fill_stats (call->log,call->audiostream);
1590                 if (call->endpoint){
1591                         linphone_call_remove_from_conf(call);
1592                 }
1593                 audio_stream_stop(call->audiostream);
1594                 call->audiostream=NULL;
1595         }
1596 }
1597
1598 void linphone_call_stop_video_stream(LinphoneCall *call) {
1599 #ifdef VIDEO_ENABLED
1600         if (call->videostream!=NULL){
1601                 rtp_session_unregister_event_queue(call->videostream->session,call->videostream_app_evq);
1602                 ortp_ev_queue_flush(call->videostream_app_evq);
1603                 ortp_ev_queue_destroy(call->videostream_app_evq);
1604                 call->videostream_app_evq=NULL;
1605                 video_stream_stop(call->videostream);
1606                 call->videostream=NULL;
1607         }
1608 #endif
1609 }
1610
1611 void linphone_call_stop_media_streams(LinphoneCall *call){
1612         linphone_call_stop_audio_stream(call);
1613         linphone_call_stop_video_stream(call);
1614         ms_event_queue_skip(call->core->msevq);
1615
1616         if (call->audio_profile){
1617                 rtp_profile_clear_all(call->audio_profile);
1618                 rtp_profile_destroy(call->audio_profile);
1619                 call->audio_profile=NULL;
1620         }
1621         if (call->video_profile){
1622                 rtp_profile_clear_all(call->video_profile);
1623                 rtp_profile_destroy(call->video_profile);
1624                 call->video_profile=NULL;
1625         }
1626 }
1627
1628
1629
1630 void linphone_call_enable_echo_cancellation(LinphoneCall *call, bool_t enable) {
1631         if (call!=NULL && call->audiostream!=NULL && call->audiostream->ec){
1632                 bool_t bypass_mode = !enable;
1633                 ms_filter_call_method(call->audiostream->ec,MS_ECHO_CANCELLER_SET_BYPASS_MODE,&bypass_mode);
1634         }
1635 }
1636 bool_t linphone_call_echo_cancellation_enabled(LinphoneCall *call) {
1637         if (call!=NULL && call->audiostream!=NULL && call->audiostream->ec){
1638                 bool_t val;
1639                 ms_filter_call_method(call->audiostream->ec,MS_ECHO_CANCELLER_GET_BYPASS_MODE,&val);
1640                 return !val;
1641         } else {
1642                 return linphone_core_echo_cancellation_enabled(call->core);
1643         }
1644 }
1645
1646 void linphone_call_enable_echo_limiter(LinphoneCall *call, bool_t val){
1647         if (call!=NULL && call->audiostream!=NULL ) {
1648                 if (val) {
1649                 const char *type=lp_config_get_string(call->core->config,"sound","el_type","mic");
1650                 if (strcasecmp(type,"mic")==0)
1651                         audio_stream_enable_echo_limiter(call->audiostream,ELControlMic);
1652                 else if (strcasecmp(type,"full")==0)
1653                         audio_stream_enable_echo_limiter(call->audiostream,ELControlFull);
1654                 } else {
1655                         audio_stream_enable_echo_limiter(call->audiostream,ELInactive);
1656                 }
1657         }
1658 }
1659
1660 bool_t linphone_call_echo_limiter_enabled(const LinphoneCall *call){
1661         if (call!=NULL && call->audiostream!=NULL ){
1662                 return call->audiostream->el_type !=ELInactive ;
1663         } else {
1664                 return linphone_core_echo_limiter_enabled(call->core);
1665         }
1666 }
1667
1668 /**
1669  * @addtogroup call_misc
1670  * @{
1671 **/
1672
1673 /**
1674  * Returns the measured sound volume played locally (received from remote).
1675  * It is expressed in dbm0.
1676 **/
1677 float linphone_call_get_play_volume(LinphoneCall *call){
1678         AudioStream *st=call->audiostream;
1679         if (st && st->volrecv){
1680                 float vol=0;
1681                 ms_filter_call_method(st->volrecv,MS_VOLUME_GET,&vol);
1682                 return vol;
1683
1684         }
1685         return LINPHONE_VOLUME_DB_LOWEST;
1686 }
1687
1688 /**
1689  * Returns the measured sound volume recorded locally (sent to remote).
1690  * It is expressed in dbm0.
1691 **/
1692 float linphone_call_get_record_volume(LinphoneCall *call){
1693         AudioStream *st=call->audiostream;
1694         if (st && st->volsend && !call->audio_muted && call->state==LinphoneCallStreamsRunning){
1695                 float vol=0;
1696                 ms_filter_call_method(st->volsend,MS_VOLUME_GET,&vol);
1697                 return vol;
1698
1699         }
1700         return LINPHONE_VOLUME_DB_LOWEST;
1701 }
1702
1703 /**
1704  * Obtain real-time quality rating of the call
1705  *
1706  * Based on local RTP statistics and RTCP feedback, a quality rating is computed and updated
1707  * during all the duration of the call. This function returns its value at the time of the function call.
1708  * It is expected that the rating is updated at least every 5 seconds or so.
1709  * The rating is a floating point number comprised between 0 and 5.
1710  *
1711  * 4-5 = good quality <br>
1712  * 3-4 = average quality <br>
1713  * 2-3 = poor quality <br>
1714  * 1-2 = very poor quality <br>
1715  * 0-1 = can't be worse, mostly unusable <br>
1716  *
1717  * @returns The function returns -1 if no quality measurement is available, for example if no
1718  * active audio stream exist. Otherwise it returns the quality rating.
1719 **/
1720 float linphone_call_get_current_quality(LinphoneCall *call){
1721         if (call->audiostream){
1722                 return audio_stream_get_quality_rating(call->audiostream);
1723         }
1724         return -1;
1725 }
1726
1727 /**
1728  * Returns call quality averaged over all the duration of the call.
1729  *
1730  * See linphone_call_get_current_quality() for more details about quality measurement.
1731 **/
1732 float linphone_call_get_average_quality(LinphoneCall *call){
1733         if (call->audiostream){
1734                 return audio_stream_get_average_quality_rating(call->audiostream);
1735         }
1736         return -1;
1737 }
1738
1739 /**
1740  * Access last known statistics for audio stream, for a given call.
1741 **/
1742 const LinphoneCallStats *linphone_call_get_audio_stats(const LinphoneCall *call) {
1743         return &call->stats[LINPHONE_CALL_STATS_AUDIO];
1744 }
1745
1746 /**
1747  * Access last known statistics for video stream, for a given call.
1748 **/
1749 const LinphoneCallStats *linphone_call_get_video_stats(const LinphoneCall *call) {
1750         return &call->stats[LINPHONE_CALL_STATS_VIDEO];
1751 }
1752
1753
1754 /**
1755  * @}
1756 **/
1757
1758 static void report_bandwidth(LinphoneCall *call, RtpSession *as, RtpSession *vs){
1759         call->stats[LINPHONE_CALL_STATS_AUDIO].download_bandwidth=(as!=NULL) ? (rtp_session_compute_recv_bandwidth(as)*1e-3) : 0;
1760         call->stats[LINPHONE_CALL_STATS_AUDIO].upload_bandwidth=(as!=NULL) ? (rtp_session_compute_send_bandwidth(as)*1e-3) : 0;
1761         call->stats[LINPHONE_CALL_STATS_VIDEO].download_bandwidth=(vs!=NULL) ? (rtp_session_compute_recv_bandwidth(vs)*1e-3) : 0;
1762         call->stats[LINPHONE_CALL_STATS_VIDEO].upload_bandwidth=(vs!=NULL) ? (rtp_session_compute_send_bandwidth(vs)*1e-3) : 0;
1763         ms_message("bandwidth usage: audio=[d=%.1f,u=%.1f] video=[d=%.1f,u=%.1f] kbit/sec",
1764                 call->stats[LINPHONE_CALL_STATS_AUDIO].download_bandwidth,
1765                 call->stats[LINPHONE_CALL_STATS_AUDIO].upload_bandwidth ,
1766                 call->stats[LINPHONE_CALL_STATS_VIDEO].download_bandwidth,
1767                 call->stats[LINPHONE_CALL_STATS_VIDEO].upload_bandwidth
1768         );
1769 }
1770
1771 static void linphone_core_disconnected(LinphoneCore *lc, LinphoneCall *call){
1772         char temp[256];
1773         char *from=NULL;
1774         if(call)
1775                 from = linphone_call_get_remote_address_as_string(call);
1776         if (from)
1777         {
1778                 snprintf(temp,sizeof(temp),"Remote end %s seems to have disconnected, the call is going to be closed.",from);
1779                 free(from);
1780         }
1781         else
1782         {
1783                 snprintf(temp,sizeof(temp),"Remote end seems to have disconnected, the call is going to be closed.");
1784         }
1785         if (lc->vtable.display_warning!=NULL)
1786                 lc->vtable.display_warning(lc,temp);
1787         linphone_core_terminate_call(lc,call);
1788 }
1789
1790 static void handle_ice_events(LinphoneCall *call, OrtpEvent *ev){
1791         OrtpEventType evt=ortp_event_get_type(ev);
1792         OrtpEventData *evd=ortp_event_get_data(ev);
1793         int ping_time;
1794
1795         if (evt == ORTP_EVENT_ICE_SESSION_PROCESSING_FINISHED) {
1796                 switch (ice_session_state(call->ice_session)) {
1797                         case IS_Completed:
1798                                 ice_session_select_candidates(call->ice_session);
1799                                 if (ice_session_role(call->ice_session) == IR_Controlling) {
1800                                         linphone_core_update_call(call->core, call, &call->current_params);
1801                                 }
1802                                 break;
1803                         case IS_Failed:
1804                                 if (ice_session_has_completed_check_list(call->ice_session) == TRUE) {
1805                                         ice_session_select_candidates(call->ice_session);
1806                                         if (ice_session_role(call->ice_session) == IR_Controlling) {
1807                                                 /* At least one ICE session has succeeded, so perform a call update. */
1808                                                 linphone_core_update_call(call->core, call, &call->current_params);
1809                                         }
1810                                 }
1811                                 break;
1812                         default:
1813                                 break;
1814                 }
1815                 linphone_core_update_ice_state_in_call_stats(call);
1816         } else if (evt == ORTP_EVENT_ICE_GATHERING_FINISHED) {
1817
1818                 if (evd->info.ice_processing_successful==TRUE) {
1819                         ice_session_compute_candidates_foundations(call->ice_session);
1820                         ice_session_eliminate_redundant_candidates(call->ice_session);
1821                         ice_session_choose_default_candidates(call->ice_session);
1822                         ping_time = ice_session_average_gathering_round_trip_time(call->ice_session);
1823                         if (ping_time >=0) {
1824                                 call->ping_time=ping_time;
1825                         }
1826                 } else {
1827                         ms_warning("No STUN answer from [%s], disabling ICE",linphone_core_get_stun_server(call->core));
1828                         linphone_call_delete_ice_session(call);
1829                 }
1830                 switch (call->state) {
1831                         case LinphoneCallUpdating:
1832                                 linphone_core_start_update_call(call->core, call);
1833                                 break;
1834                         case LinphoneCallUpdatedByRemote:
1835                                 linphone_core_start_accept_call_update(call->core, call);
1836                                 break;
1837                         case LinphoneCallOutgoingInit:
1838                                 linphone_call_stop_media_streams_for_ice_gathering(call);
1839                                 linphone_core_proceed_with_invite_if_ready(call->core, call, NULL);
1840                                 break;
1841                         case LinphoneCallIdle:
1842                                 linphone_call_stop_media_streams_for_ice_gathering(call);
1843                                 linphone_core_notify_incoming_call(call->core, call);
1844                                 break;
1845                         default:
1846                                 break;
1847                 }
1848         } else if (evt == ORTP_EVENT_ICE_LOSING_PAIRS_COMPLETED) {
1849                 linphone_core_start_accept_call_update(call->core, call);
1850                 linphone_core_update_ice_state_in_call_stats(call);
1851         } else if (evt == ORTP_EVENT_ICE_RESTART_NEEDED) {
1852                 ice_session_restart(call->ice_session);
1853                 ice_session_set_role(call->ice_session, IR_Controlling);
1854                 linphone_core_update_call(call->core, call, &call->current_params);
1855         }
1856 }
1857
1858 void linphone_call_background_tasks(LinphoneCall *call, bool_t one_second_elapsed){
1859         LinphoneCore* lc = call->core;
1860         int disconnect_timeout = linphone_core_get_nortp_timeout(call->core);
1861         bool_t disconnected=FALSE;
1862
1863         if (call->state==LinphoneCallStreamsRunning && one_second_elapsed){
1864                 RtpSession *as=NULL,*vs=NULL;
1865                 float audio_load=0, video_load=0;
1866                 if (call->audiostream!=NULL){
1867                         as=call->audiostream->session;
1868                         if (call->audiostream->ticker)
1869                                 audio_load=ms_ticker_get_average_load(call->audiostream->ticker);
1870                 }
1871                 if (call->videostream!=NULL){
1872                         if (call->videostream->ticker)
1873                                 video_load=ms_ticker_get_average_load(call->videostream->ticker);
1874                         vs=call->videostream->session;
1875                 }
1876                 report_bandwidth(call,as,vs);
1877                 ms_message("Thread processing load: audio=%f\tvideo=%f",audio_load,video_load);
1878         }
1879 #ifdef VIDEO_ENABLED
1880         if (call->videostream!=NULL) {
1881                 OrtpEvent *ev;
1882
1883                 /* Ensure there is no dangling ICE check list. */
1884                 if (call->ice_session == NULL) call->videostream->ice_check_list = NULL;
1885
1886                 // Beware that the application queue should not depend on treatments fron the
1887                 // mediastreamer queue.
1888                 video_stream_iterate(call->videostream);
1889
1890                 while (call->videostream_app_evq && (NULL != (ev=ortp_ev_queue_get(call->videostream_app_evq)))){
1891                         OrtpEventType evt=ortp_event_get_type(ev);
1892                         OrtpEventData *evd=ortp_event_get_data(ev);
1893                         if (evt == ORTP_EVENT_ZRTP_ENCRYPTION_CHANGED){
1894                                 linphone_call_videostream_encryption_changed(call, evd->info.zrtp_stream_encrypted);
1895                         } else if (evt == ORTP_EVENT_RTCP_PACKET_RECEIVED) {
1896                                 call->stats[LINPHONE_CALL_STATS_VIDEO].round_trip_delay = rtp_session_get_round_trip_propagation(call->videostream->session);
1897                                 if(call->stats[LINPHONE_CALL_STATS_VIDEO].received_rtcp != NULL)
1898                                         freemsg(call->stats[LINPHONE_CALL_STATS_VIDEO].received_rtcp);
1899                                 call->stats[LINPHONE_CALL_STATS_VIDEO].received_rtcp = evd->packet;
1900                                 evd->packet = NULL;
1901                                 if (lc->vtable.call_stats_updated)
1902                                         lc->vtable.call_stats_updated(lc, call, &call->stats[LINPHONE_CALL_STATS_VIDEO]);
1903                         } else if (evt == ORTP_EVENT_RTCP_PACKET_EMITTED) {
1904                                 memcpy(&call->stats[LINPHONE_CALL_STATS_VIDEO].jitter_stats, rtp_session_get_jitter_stats(call->videostream->session), sizeof(jitter_stats_t));
1905                                 if(call->stats[LINPHONE_CALL_STATS_VIDEO].sent_rtcp != NULL)
1906                                         freemsg(call->stats[LINPHONE_CALL_STATS_VIDEO].sent_rtcp);
1907                                 call->stats[LINPHONE_CALL_STATS_VIDEO].sent_rtcp = evd->packet;
1908                                 evd->packet = NULL;
1909                                 if (lc->vtable.call_stats_updated)
1910                                         lc->vtable.call_stats_updated(lc, call, &call->stats[LINPHONE_CALL_STATS_VIDEO]);
1911                         } else if ((evt == ORTP_EVENT_ICE_SESSION_PROCESSING_FINISHED) || (evt == ORTP_EVENT_ICE_GATHERING_FINISHED)
1912                                 || (evt == ORTP_EVENT_ICE_LOSING_PAIRS_COMPLETED) || (evt == ORTP_EVENT_ICE_RESTART_NEEDED)) {
1913                                 handle_ice_events(call, ev);
1914                         }
1915                         ortp_event_destroy(ev);
1916                 }
1917         }
1918 #endif
1919         if (call->audiostream!=NULL) {
1920                 OrtpEvent *ev;
1921
1922                 /* Ensure there is no dangling ICE check list. */
1923                 if (call->ice_session == NULL) call->audiostream->ice_check_list = NULL;
1924
1925                 // Beware that the application queue should not depend on treatments fron the
1926                 // mediastreamer queue.
1927                 audio_stream_iterate(call->audiostream);
1928
1929                 while (call->audiostream_app_evq && (NULL != (ev=ortp_ev_queue_get(call->audiostream_app_evq)))){
1930                         OrtpEventType evt=ortp_event_get_type(ev);
1931                         OrtpEventData *evd=ortp_event_get_data(ev);
1932                         if (evt == ORTP_EVENT_ZRTP_ENCRYPTION_CHANGED){
1933                                 linphone_call_audiostream_encryption_changed(call, evd->info.zrtp_stream_encrypted);
1934                         } else if (evt == ORTP_EVENT_ZRTP_SAS_READY) {
1935                                 linphone_call_audiostream_auth_token_ready(call, evd->info.zrtp_sas.sas, evd->info.zrtp_sas.verified);
1936                         } else if (evt == ORTP_EVENT_RTCP_PACKET_RECEIVED) {
1937                                 call->stats[LINPHONE_CALL_STATS_AUDIO].round_trip_delay = rtp_session_get_round_trip_propagation(call->audiostream->session);
1938                                 if(call->stats[LINPHONE_CALL_STATS_AUDIO].received_rtcp != NULL)
1939                                         freemsg(call->stats[LINPHONE_CALL_STATS_AUDIO].received_rtcp);
1940                                 call->stats[LINPHONE_CALL_STATS_AUDIO].received_rtcp = evd->packet;
1941                                 evd->packet = NULL;
1942                                 if (lc->vtable.call_stats_updated)
1943                                         lc->vtable.call_stats_updated(lc, call, &call->stats[LINPHONE_CALL_STATS_AUDIO]);
1944                         } else if (evt == ORTP_EVENT_RTCP_PACKET_EMITTED) {
1945                                 memcpy(&call->stats[LINPHONE_CALL_STATS_AUDIO].jitter_stats, rtp_session_get_jitter_stats(call->audiostream->session), sizeof(jitter_stats_t));
1946                                 if(call->stats[LINPHONE_CALL_STATS_AUDIO].sent_rtcp != NULL)
1947                                         freemsg(call->stats[LINPHONE_CALL_STATS_AUDIO].sent_rtcp);
1948                                 call->stats[LINPHONE_CALL_STATS_AUDIO].sent_rtcp = evd->packet;
1949                                 evd->packet = NULL;
1950                                 if (lc->vtable.call_stats_updated)
1951                                         lc->vtable.call_stats_updated(lc, call, &call->stats[LINPHONE_CALL_STATS_AUDIO]);
1952                         } else if ((evt == ORTP_EVENT_ICE_SESSION_PROCESSING_FINISHED) || (evt == ORTP_EVENT_ICE_GATHERING_FINISHED)
1953                                 || (evt == ORTP_EVENT_ICE_LOSING_PAIRS_COMPLETED) || (evt == ORTP_EVENT_ICE_RESTART_NEEDED)) {
1954                                 handle_ice_events(call, ev);
1955                         } else if (evt==ORTP_EVENT_TELEPHONE_EVENT){
1956                                 linphone_core_dtmf_received(lc,evd->info.telephone_event);
1957                         }
1958                         ortp_event_destroy(ev);
1959                 }
1960         }
1961         if (call->state==LinphoneCallStreamsRunning && one_second_elapsed && call->audiostream!=NULL && disconnect_timeout>0 )
1962                 disconnected=!audio_stream_alive(call->audiostream,disconnect_timeout);
1963         if (disconnected)
1964                 linphone_core_disconnected(call->core,call);
1965 }
1966
1967 void linphone_call_log_completed(LinphoneCall *call){
1968         LinphoneCore *lc=call->core;
1969
1970         call->log->duration=time(NULL)-call->start_time;
1971
1972         if (call->log->status==LinphoneCallMissed){
1973                 char *info;
1974                 lc->missed_calls++;
1975                 info=ortp_strdup_printf(ngettext("You have missed %i call.",
1976                                          "You have missed %i calls.", lc->missed_calls),
1977                                 lc->missed_calls);
1978         if (lc->vtable.display_status!=NULL)
1979             lc->vtable.display_status(lc,info);
1980                 ms_free(info);
1981         }
1982         lc->call_logs=ms_list_prepend(lc->call_logs,(void *)call->log);
1983         if (ms_list_size(lc->call_logs)>lc->max_call_logs){
1984                 MSList *elem,*prevelem=NULL;
1985                 /*find the last element*/
1986                 for(elem=lc->call_logs;elem!=NULL;elem=elem->next){
1987                         prevelem=elem;
1988                 }
1989                 elem=prevelem;
1990                 linphone_call_log_destroy((LinphoneCallLog*)elem->data);
1991                 lc->call_logs=ms_list_remove_link(lc->call_logs,elem);
1992         }
1993         if (lc->vtable.call_log_updated!=NULL){
1994                 lc->vtable.call_log_updated(lc,call->log);
1995         }
1996         call_logs_write_to_config_file(lc);
1997 }
1998
1999 LinphoneCallState linphone_call_get_transfer_state(LinphoneCall *call) {
2000         return call->transfer_state;
2001 }
2002
2003 void linphone_call_set_transfer_state(LinphoneCall* call, LinphoneCallState state) {
2004         if (state != call->transfer_state) {
2005                 LinphoneCore* lc = call->core;
2006                 call->transfer_state = state;
2007                 if (lc->vtable.transfer_state_changed)
2008                         lc->vtable.transfer_state_changed(lc, call, state);
2009         }
2010 }
2011
2012 bool_t linphone_call_is_in_conference(const LinphoneCall *call) {
2013         return call->params.in_conference;
2014 }