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