sjero.net Git - linphone/blob - coreapi/linphonecall.c

   1
   2 /*
   3 linphone
   4 Copyright (C) 2010  Belledonne Communications SARL
   5  (simon.morlat@linphone.org)
   6
   7 This program is free software; you can redistribute it and/or
   8 modify it under the terms of the GNU General Public License
   9 as published by the Free Software Foundation; either version 2
  10 of the License, or (at your option) any later version.
  11
  12 This program is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with this program; if not, write to the Free Software
  19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  20 */
  21 #ifdef WIN32
  22 #include <time.h>
  23 #endif
  24 #include "linphonecore.h"
  25 #include "sipsetup.h"
  26 #include "lpconfig.h"
  27 #include "private.h"
  28 #include <ortp/event.h>
  29 #include <ortp/b64.h>
  30
  31
  32 #include "mediastreamer2/mediastream.h"
  33 #include "mediastreamer2/msvolume.h"
  34 #include "mediastreamer2/msequalizer.h"
  35 #include "mediastreamer2/msfileplayer.h"
  36 #include "mediastreamer2/msjpegwriter.h"
  37 #include "mediastreamer2/mseventqueue.h"
  38 #include "mediastreamer2/mssndcard.h"
  39
  40 #ifdef VIDEO_ENABLED
  41 static MSWebCam *get_nowebcam_device(){
  42         return ms_web_cam_manager_get_cam(ms_web_cam_manager_get(),"StaticImage: Static picture");
  43 }
  44 #endif
  45
  46 static bool_t generate_b64_crypto_key(int key_length, char* key_out) {
  47         int b64_size;
  48         uint8_t* tmp = (uint8_t*) malloc(key_length);
  49         if (ortp_crypto_get_random(tmp, key_length)!=0) {
  50                 ms_error("Failed to generate random key");
  51                 free(tmp);
  52                 return FALSE;
  53         }
  54
  55         b64_size = b64_encode((const char*)tmp, key_length, NULL, 0);
  56         if (b64_size == 0) {
  57                 ms_error("Failed to b64 encode key");
  58                 free(tmp);
  59                 return FALSE;
  60         }
  61         key_out[b64_size] = '\0';
  62         b64_encode((const char*)tmp, key_length, key_out, 40);
  63         free(tmp);
  64         return TRUE;
  65 }
  66
  67 LinphoneCore *linphone_call_get_core(const LinphoneCall *call){
  68         return call->core;
  69 }
  70
  71 const char* linphone_call_get_authentication_token(LinphoneCall *call){
  72         return call->auth_token;
  73 }
  74
  75 bool_t linphone_call_get_authentication_token_verified(LinphoneCall *call){
  76         return call->auth_token_verified;
  77 }
  78
  79 static bool_t linphone_call_are_all_streams_encrypted(LinphoneCall *call) {
  80         // Check ZRTP encryption in audiostream
  81         if (!call->audiostream_encrypted) {
  82                 return FALSE;
  83         }
  84
  85 #ifdef VIDEO_ENABLED
  86         // If video enabled, check ZRTP encryption in videostream
  87         const LinphoneCallParams *params=linphone_call_get_current_params(call);
  88         if (params->has_video && !call->videostream_encrypted) {
  89                 return FALSE;
  90         }
  91 #endif
  92
  93         return TRUE;
  94 }
  95
  96 void propagate_encryption_changed(LinphoneCall *call){
  97         LinphoneCore *lc=call->core;
  98         if (!linphone_call_are_all_streams_encrypted(call)) {
  99                 ms_message("Some streams are not encrypted");
 100                 call->current_params.media_encryption=LinphoneMediaEncryptionNone;
 101                 if (lc->vtable.call_encryption_changed)
 102                         lc->vtable.call_encryption_changed(call->core, call, FALSE, call->auth_token);
 103         } else {
 104                 ms_message("All streams are encrypted");
 105                 call->current_params.media_encryption=LinphoneMediaEncryptionZRTP;
 106                 if (lc->vtable.call_encryption_changed)
 107                         lc->vtable.call_encryption_changed(call->core, call, TRUE, call->auth_token);
 108         }
 109 }
 110
 111 #ifdef VIDEO_ENABLED
 112 static void linphone_call_videostream_encryption_changed(void *data, bool_t encrypted){
 113         ms_message("Video stream is %s", encrypted ? "encrypted" : "not encrypted");
 114
 115         LinphoneCall *call = (LinphoneCall *)data;
 116         call->videostream_encrypted=encrypted;
 117         propagate_encryption_changed(call);
 118 }
 119 #endif
 120
 121 static void linphone_call_audiostream_encryption_changed(void *data, bool_t encrypted) {
 122         char status[255]={0};
 123         ms_message("Audio stream is %s ", encrypted ? "encrypted" : "not encrypted");
 124
 125         LinphoneCall *call = (LinphoneCall *)data;
 126         call->audiostream_encrypted=encrypted;
 127
 128         if (encrypted && call->core->vtable.display_status != NULL) {
 129                 snprintf(status,sizeof(status)-1,_("Authentication token is %s"),call->auth_token);
 130                  call->core->vtable.display_status(call->core, status);
 131         }
 132
 133         propagate_encryption_changed(call);
 134
 135
 136 #ifdef VIDEO_ENABLED
 137         // Enable video encryption
 138         const LinphoneCallParams *params=linphone_call_get_current_params(call);
 139         if (params->has_video) {
 140                 ms_message("Trying to enable encryption on video stream");
 141                 OrtpZrtpParams params;
 142                 params.zid_file=NULL; //unused
 143                 video_stream_enable_zrtp(call->videostream,call->audiostream,&params);
 144         }
 145 #endif
 146 }
 147
 148
 149 static void linphone_call_audiostream_auth_token_ready(void *data, const char* auth_token, bool_t verified) {
 150         LinphoneCall *call=(LinphoneCall *)data;
 151         if (call->auth_token != NULL)
 152                 ms_free(call->auth_token);
 153
 154         call->auth_token=ms_strdup(auth_token);
 155         call->auth_token_verified=verified;
 156
 157         ms_message("Authentication token is %s (%s)", auth_token, verified?"verified":"unverified");
 158 }
 159
 160 void linphone_call_set_authentication_token_verified(LinphoneCall *call, bool_t verified){
 161         if (call->audiostream==NULL){
 162                 ms_error("linphone_call_set_authentication_token_verified(): No audio stream");
 163         }
 164         if (call->audiostream->ortpZrtpContext==NULL){
 165                 ms_error("linphone_call_set_authentication_token_verified(): No zrtp context.");
 166         }
 167         if (!call->auth_token_verified && verified){
 168                 ortp_zrtp_sas_verified(call->audiostream->ortpZrtpContext);
 169         }else if (call->auth_token_verified && !verified){
 170                 ortp_zrtp_sas_reset_verified(call->audiostream->ortpZrtpContext);
 171         }
 172         call->auth_token_verified=verified;
 173         propagate_encryption_changed(call);
 174 }
 175
 176 static MSList *make_codec_list(LinphoneCore *lc, const MSList *codecs, int bandwidth_limit,int* max_sample_rate){
 177         MSList *l=NULL;
 178         const MSList *it;
 179         if (max_sample_rate) *max_sample_rate=0;
 180         for(it=codecs;it!=NULL;it=it->next){
 181                 PayloadType *pt=(PayloadType*)it->data;
 182                 if (pt->flags & PAYLOAD_TYPE_ENABLED){
 183                         if (bandwidth_limit>0 && !linphone_core_is_payload_type_usable_for_bandwidth(lc,pt,bandwidth_limit)){
 184                                 ms_message("Codec %s/%i eliminated because of audio bandwidth constraint.",pt->mime_type,pt->clock_rate);
 185                                 continue;
 186                         }
 187                         if (linphone_core_check_payload_type_usability(lc,pt)){
 188                                 l=ms_list_append(l,payload_type_clone(pt));
 189                                 if (max_sample_rate && payload_type_get_rate(pt)>*max_sample_rate) *max_sample_rate=payload_type_get_rate(pt);
 190                         }
 191                 }
 192         }
 193         return l;
 194 }
 195
 196 static SalMediaDescription *_create_local_media_description(LinphoneCore *lc, LinphoneCall *call, unsigned int session_id, unsigned int session_ver){
 197         MSList *l;
 198         PayloadType *pt;
 199         int i;
 200         const char *me=linphone_core_get_identity(lc);
 201         LinphoneAddress *addr=linphone_address_new(me);
 202         const char *username=linphone_address_get_username (addr);
 203         SalMediaDescription *md=sal_media_description_new();
 204
 205         md->session_id=session_id;
 206         md->session_ver=session_ver;
 207         md->nstreams=1;
 208         strncpy(md->addr,call->localip,sizeof(md->addr));
 209         strncpy(md->username,username,sizeof(md->username));
 210         md->bandwidth=linphone_core_get_download_bandwidth(lc);
 211
 212         /*set audio capabilities */
 213         strncpy(md->streams[0].rtp_addr,call->localip,sizeof(md->streams[0].rtp_addr));
 214         strncpy(md->streams[0].rtcp_addr,call->localip,sizeof(md->streams[0].rtcp_addr));
 215         md->streams[0].rtp_port=call->audio_port;
 216         md->streams[0].rtcp_port=call->audio_port+1;
 217         md->streams[0].proto=(call->params.media_encryption == LinphoneMediaEncryptionSRTP) ?
 218                 SalProtoRtpSavp : SalProtoRtpAvp;
 219         md->streams[0].type=SalAudio;
 220         md->streams[0].ptime=lc->net_conf.down_ptime;
 221         l=make_codec_list(lc,lc->codecs_conf.audio_codecs,call->params.audio_bw,&md->streams[0].max_rate);
 222         pt=payload_type_clone(rtp_profile_get_payload_from_mime(&av_profile,"telephone-event"));
 223         l=ms_list_append(l,pt);
 224         md->streams[0].payloads=l;
 225
 226
 227
 228         if (call->params.has_video){
 229                 md->nstreams++;
 230                 md->streams[1].rtp_port=call->video_port;
 231                 md->streams[1].rtcp_port=call->video_port+1;
 232                 md->streams[1].proto=md->streams[0].proto;
 233                 md->streams[1].type=SalVideo;
 234                 l=make_codec_list(lc,lc->codecs_conf.video_codecs,0,NULL);
 235                 md->streams[1].payloads=l;
 236         }
 237
 238         for(i=0; i<md->nstreams; i++) {
 239                 if (md->streams[i].proto == SalProtoRtpSavp) {
 240                         md->streams[i].crypto[0].tag = 1;
 241                         md->streams[i].crypto[0].algo = AES_128_SHA1_80;
 242                         if (!generate_b64_crypto_key(30, md->streams[i].crypto[0].master_key))
 243                                 md->streams[i].crypto[0].algo = 0;
 244                         md->streams[i].crypto[1].tag = 2;
 245                         md->streams[i].crypto[1].algo = AES_128_SHA1_32;
 246                         if (!generate_b64_crypto_key(30, md->streams[i].crypto[1].master_key))
 247                                 md->streams[i].crypto[1].algo = 0;
 248                         md->streams[i].crypto[2].algo = 0;
 249                 }
 250                 if ((call->dir == LinphoneCallOutgoing) && (linphone_core_get_firewall_policy(call->core) == LinphonePolicyUseIce)
 251                         && (call->ice_session != NULL) && (ice_session_check_list(call->ice_session, i) == NULL)) {
 252                         ice_session_add_check_list(call->ice_session, ice_check_list_new());
 253                 }
 254         }
 255
 256         linphone_address_destroy(addr);
 257         return md;
 258 }
 259
 260 void update_local_media_description(LinphoneCore *lc, LinphoneCall *call){
 261         SalMediaDescription *md=call->localdesc;
 262         if (md== NULL) {
 263                 call->localdesc = create_local_media_description(lc,call);
 264         } else {
 265                 call->localdesc = _create_local_media_description(lc,call,md->session_id,md->session_ver+1);
 266                 sal_media_description_unref(md);
 267         }
 268 }
 269
 270 SalMediaDescription *create_local_media_description(LinphoneCore *lc, LinphoneCall *call){
 271         unsigned int id=rand() & 0xfff;
 272         return _create_local_media_description(lc,call,id,id);
 273 }
 274
 275 static int find_port_offset(LinphoneCore *lc){
 276         int offset;
 277         MSList *elem;
 278         int audio_port;
 279         bool_t already_used=FALSE;
 280         for(offset=0;offset<100;offset+=2){
 281                 audio_port=linphone_core_get_audio_port (lc)+offset;
 282                 already_used=FALSE;
 283                 for(elem=lc->calls;elem!=NULL;elem=elem->next){
 284                         LinphoneCall *call=(LinphoneCall*)elem->data;
 285                         if (call->audio_port==audio_port) {
 286                                 already_used=TRUE;
 287                                 break;
 288                         }
 289                 }
 290                 if (!already_used) break;
 291         }
 292         if (offset==100){
 293                 ms_error("Could not find any free port !");
 294                 return -1;
 295         }
 296         return offset;
 297 }
 298
 299 static void linphone_call_init_common(LinphoneCall *call, LinphoneAddress *from, LinphoneAddress *to){
 300         int port_offset;
 301         call->magic=linphone_call_magic;
 302         call->refcnt=1;
 303         call->state=LinphoneCallIdle;
 304         call->transfer_state = LinphoneCallIdle;
 305         call->start_time=time(NULL);
 306         call->media_start_time=0;
 307         call->log=linphone_call_log_new(call, from, to);
 308         call->owns_call_log=TRUE;
 309         linphone_core_notify_all_friends(call->core,LinphoneStatusOnThePhone);
 310         port_offset=find_port_offset (call->core);
 311         if (port_offset==-1) return;
 312         call->audio_port=linphone_core_get_audio_port(call->core)+port_offset;
 313         call->video_port=linphone_core_get_video_port(call->core)+port_offset;
 314         linphone_call_init_stats(&call->stats[LINPHONE_CALL_STATS_AUDIO], LINPHONE_CALL_STATS_AUDIO);
 315         linphone_call_init_stats(&call->stats[LINPHONE_CALL_STATS_VIDEO], LINPHONE_CALL_STATS_VIDEO);
 316 }
 317
 318 void linphone_call_init_stats(LinphoneCallStats *stats, int type) {
 319         stats->type = type;
 320         stats->received_rtcp = NULL;
 321         stats->sent_rtcp = NULL;
 322 }
 323
 324 static void discover_mtu(LinphoneCore *lc, const char *remote){
 325         int mtu;
 326         if (lc->net_conf.mtu==0 ){
 327                 /*attempt to discover mtu*/
 328                 mtu=ms_discover_mtu(remote);
 329                 if (mtu>0){
 330                         ms_set_mtu(mtu);
 331                         ms_message("Discovered mtu is %i, RTP payload max size is %i",
 332                                 mtu, ms_get_payload_max_size());
 333                 }
 334         }
 335 }
 336
 337 LinphoneCall * linphone_call_new_outgoing(struct _LinphoneCore *lc, LinphoneAddress *from, LinphoneAddress *to, const LinphoneCallParams *params)
 338 {
 339         LinphoneCall *call=ms_new0(LinphoneCall,1);
 340         call->dir=LinphoneCallOutgoing;
 341         call->op=sal_op_new(lc->sal);
 342         sal_op_set_user_pointer(call->op,call);
 343         call->core=lc;
 344         linphone_core_get_local_ip(lc,linphone_address_get_domain(to),call->localip);
 345         linphone_call_init_common(call,from,to);
 346         call->params=*params;
 347         if (linphone_core_get_firewall_policy(call->core) == LinphonePolicyUseIce) {
 348                 call->ice_session = ice_session_new();
 349                 ice_session_set_role(call->ice_session, IR_Controlling);
 350         }
 351         call->localdesc=create_local_media_description (lc,call);
 352         call->camera_active=params->has_video;
 353         if (linphone_core_get_firewall_policy(call->core) == LinphonePolicyUseStun) {
 354                 linphone_core_run_stun_tests(call->core,call);
 355         }
 356         discover_mtu(lc,linphone_address_get_domain (to));
 357         if (params->referer){
 358                 sal_call_set_referer(call->op,params->referer->op);
 359                 call->referer=linphone_call_ref(params->referer);
 360         }
 361         return call;
 362 }
 363
 364 LinphoneCall * linphone_call_new_incoming(LinphoneCore *lc, LinphoneAddress *from, LinphoneAddress *to, SalOp *op){
 365         LinphoneCall *call=ms_new0(LinphoneCall,1);
 366         char *from_str;
 367
 368         call->dir=LinphoneCallIncoming;
 369         sal_op_set_user_pointer(op,call);
 370         call->op=op;
 371         call->core=lc;
 372
 373         if (lc->sip_conf.ping_with_options){
 374                 /*the following sends an option request back to the caller so that
 375                  we get a chance to discover our nat'd address before answering.*/
 376                 call->ping_op=sal_op_new(lc->sal);
 377                 from_str=linphone_address_as_string_uri_only(from);
 378                 sal_op_set_route(call->ping_op,sal_op_get_network_origin(op));
 379                 sal_op_set_user_pointer(call->ping_op,call);
 380                 sal_ping(call->ping_op,linphone_core_find_best_identity(lc,from,NULL),from_str);
 381                 ms_free(from_str);
 382         }
 383
 384         linphone_address_clean(from);
 385         linphone_core_get_local_ip(lc,linphone_address_get_domain(from),call->localip);
 386         linphone_call_init_common(call, from, to);
 387         linphone_core_init_default_params(lc, &call->params);
 388         call->params.has_video &= !!lc->video_policy.automatically_accept;
 389         call->localdesc=create_local_media_description (lc,call);
 390         call->camera_active=call->params.has_video;
 391         switch (linphone_core_get_firewall_policy(call->core)) {
 392                 case LinphonePolicyUseIce:
 393                         linphone_call_init_media_streams(call);
 394                         linphone_call_start_media_streams_for_ice_gathering(call);
 395                         if (linphone_core_gather_ice_candidates(call->core,call)<0) {
 396                                 /* Ice candidates gathering failed, proceed with the call anyway. */
 397                                 linphone_call_delete_ice_session(call);
 398                                 linphone_call_stop_media_streams(call);
 399                         }
 400                         break;
 401                 case LinphonePolicyUseStun:
 402                         linphone_core_run_stun_tests(call->core,call);
 403                         /* No break to also destroy ice session in this case. */
 404                 default:
 405                         linphone_call_delete_ice_session(call);
 406                         break;
 407         }
 408         discover_mtu(lc,linphone_address_get_domain(from));
 409         return call;
 410 }
 411
 412 /* this function is called internally to get rid of a call.
 413  It performs the following tasks:
 414  - remove the call from the internal list of calls
 415  - update the call logs accordingly
 416 */
 417
 418 static void linphone_call_set_terminated(LinphoneCall *call){
 419         LinphoneCore *lc=call->core;
 420
 421         linphone_core_update_allocated_audio_bandwidth(lc);
 422
 423         call->owns_call_log=FALSE;
 424         linphone_call_log_completed(call);
 425
 426
 427         if (call == lc->current_call){
 428                 ms_message("Resetting the current call");
 429                 lc->current_call=NULL;
 430         }
 431
 432         if (linphone_core_del_call(lc,call) != 0){
 433                 ms_error("Could not remove the call from the list !!!");
 434         }
 435
 436         if (ms_list_size(lc->calls)==0)
 437                 linphone_core_notify_all_friends(lc,lc->presence_mode);
 438
 439         linphone_core_conference_check_uninit(lc);
 440         if (call->ringing_beep){
 441                 linphone_core_stop_dtmf(lc);
 442                 call->ringing_beep=FALSE;
 443         }
 444         if (call->referer){
 445                 linphone_call_unref(call->referer);
 446                 call->referer=NULL;
 447         }
 448 }
 449
 450 void linphone_call_fix_call_parameters(LinphoneCall *call){
 451         call->params.has_video=call->current_params.has_video;
 452         call->params.media_encryption=call->current_params.media_encryption;
 453 }
 454
 455 const char *linphone_call_state_to_string(LinphoneCallState cs){
 456         switch (cs){
 457                 case LinphoneCallIdle:
 458                         return "LinphoneCallIdle";
 459                 case LinphoneCallIncomingReceived:
 460                         return "LinphoneCallIncomingReceived";
 461                 case LinphoneCallOutgoingInit:
 462                         return "LinphoneCallOutgoingInit";
 463                 case LinphoneCallOutgoingProgress:
 464                         return "LinphoneCallOutgoingProgress";
 465                 case LinphoneCallOutgoingRinging:
 466                         return "LinphoneCallOutgoingRinging";
 467                 case LinphoneCallOutgoingEarlyMedia:
 468                         return "LinphoneCallOutgoingEarlyMedia";
 469                 case LinphoneCallConnected:
 470                         return "LinphoneCallConnected";
 471                 case LinphoneCallStreamsRunning:
 472                         return "LinphoneCallStreamsRunning";
 473                 case LinphoneCallPausing:
 474                         return "LinphoneCallPausing";
 475                 case LinphoneCallPaused:
 476                         return "LinphoneCallPaused";
 477                 case LinphoneCallResuming:
 478                         return "LinphoneCallResuming";
 479                 case LinphoneCallRefered:
 480                         return "LinphoneCallRefered";
 481                 case LinphoneCallError:
 482                         return "LinphoneCallError";
 483                 case LinphoneCallEnd:
 484                         return "LinphoneCallEnd";
 485                 case LinphoneCallPausedByRemote:
 486                         return "LinphoneCallPausedByRemote";
 487                 case LinphoneCallUpdatedByRemote:
 488                         return "LinphoneCallUpdatedByRemote";
 489                 case LinphoneCallIncomingEarlyMedia:
 490                         return "LinphoneCallIncomingEarlyMedia";
 491                 case LinphoneCallUpdated:
 492                         return "LinphoneCallUpdated";
 493                 case LinphoneCallReleased:
 494                         return "LinphoneCallReleased";
 495         }
 496         return "undefined state";
 497 }
 498
 499 void linphone_call_set_state(LinphoneCall *call, LinphoneCallState cstate, const char *message){
 500         LinphoneCore *lc=call->core;
 501
 502         if (call->state!=cstate){
 503                 if (call->state==LinphoneCallEnd || call->state==LinphoneCallError){
 504                         if (cstate!=LinphoneCallReleased){
 505                                 ms_warning("Spurious call state change from %s to %s, ignored.",linphone_call_state_to_string(call->state),
 506                                    linphone_call_state_to_string(cstate));
 507                                 return;
 508                         }
 509                 }
 510                 ms_message("Call %p: moving from state %s to %s",call,linphone_call_state_to_string(call->state),
 511                            linphone_call_state_to_string(cstate));
 512                 if (cstate!=LinphoneCallRefered){
 513                         /*LinphoneCallRefered is rather an event, not a state.
 514                          Indeed it does not change the state of the call (still paused or running)*/
 515                         call->state=cstate;
 516                 }
 517                 if (cstate==LinphoneCallEnd || cstate==LinphoneCallError){
 518              switch(call->reason){
 519                                 case LinphoneReasonDeclined:
 520                                         call->log->status=LinphoneCallDeclined;
 521                                 case LinphoneReasonNotAnswered:
 522                                         call->log->status=LinphoneCallMissed;
 523                                 break;
 524                                 default:
 525                                 break;
 526                         }
 527                         linphone_call_set_terminated (call);
 528                 }
 529                 if (cstate == LinphoneCallConnected) {
 530                         call->log->status=LinphoneCallSuccess;
 531                         call->media_start_time=time(NULL);
 532                 }
 533
 534                 if (lc->vtable.call_state_changed)
 535                         lc->vtable.call_state_changed(lc,call,cstate,message);
 536                 if (cstate==LinphoneCallReleased){
 537                         if (call->op!=NULL) {
 538                                 /* so that we cannot have anymore upcalls for SAL
 539                                  concerning this call*/
 540                                 sal_op_release(call->op);
 541                                 call->op=NULL;
 542                         }
 543                         linphone_call_unref(call);
 544                 }
 545         }
 546 }
 547
 548 void linphone_call_enable_video(LinphoneCall *call, bool_t enabled)
 549 {
 550         LinphoneCore *lc=linphone_call_get_core(call);
 551         LinphoneCallParams *params=linphone_call_params_copy(linphone_call_get_current_params(call));
 552
 553         linphone_call_params_enable_video(params, enabled);
 554         if (enabled == TRUE) {
 555                 if (call->ice_session != NULL) {
 556                         /* Defer call update until the ICE candidates gathering process has finished. */
 557                         ms_message("Defer call update to gather ICE candidates");
 558                         call->params = *params;
 559                         update_local_media_description(lc, call);
 560                         linphone_call_init_video_stream(call);
 561                         video_stream_start_ice_gathering(call->videostream);
 562                         linphone_core_gather_ice_candidates(lc, call);
 563                 } else {
 564                         if (linphone_call_get_state(call) == LinphoneCallUpdatedByRemote) {
 565                                 linphone_core_accept_call_update(lc, call, params);
 566                         } else {
 567                                 linphone_core_update_call(lc, call, params);
 568                         }
 569                 }
 570         } else {
 571                 if ((call->ice_session != NULL) && (call->videostream != NULL)) {
 572                         ice_session_remove_check_list(call->ice_session, call->videostream->ice_check_list);
 573                         call->videostream->ice_check_list = NULL;
 574                 }
 575                 if (linphone_call_get_state(call) == LinphoneCallUpdatedByRemote) {
 576                         linphone_core_accept_call_update(lc, call, params);
 577                 } else {
 578                         linphone_core_update_call(lc, call, params);
 579                 }
 580         }
 581         linphone_call_params_destroy(params);
 582 }
 583
 584 static void linphone_call_destroy(LinphoneCall *obj)
 585 {
 586         if (obj->op!=NULL) {
 587                 sal_op_release(obj->op);
 588                 obj->op=NULL;
 589         }
 590         if (obj->resultdesc!=NULL) {
 591                 sal_media_description_unref(obj->resultdesc);
 592                 obj->resultdesc=NULL;
 593         }
 594         if (obj->localdesc!=NULL) {
 595                 sal_media_description_unref(obj->localdesc);
 596                 obj->localdesc=NULL;
 597         }
 598         if (obj->ping_op) {
 599                 sal_op_release(obj->ping_op);
 600         }
 601         if (obj->refer_to){
 602                 ms_free(obj->refer_to);
 603         }
 604         if (obj->owns_call_log)
 605                 linphone_call_log_destroy(obj->log);
 606         if (obj->auth_token) {
 607                 ms_free(obj->auth_token);
 608         }
 609         if (obj->ice_session) {
 610                 ice_session_destroy(obj->ice_session);
 611         }
 612
 613         ms_free(obj);
 614 }
 615
 616 /**
 617  * @addtogroup call_control
 618  * @{
 619 **/
 620
 621 /**
 622  * Increments the call 's reference count.
 623  * An application that wishes to retain a pointer to call object
 624  * must use this function to unsure the pointer remains
 625  * valid. Once the application no more needs this pointer,
 626  * it must call linphone_call_unref().
 627 **/
 628 LinphoneCall * linphone_call_ref(LinphoneCall *obj){
 629         obj->refcnt++;
 630         return obj;
 631 }
 632
 633 /**
 634  * Decrements the call object reference count.
 635  * See linphone_call_ref().
 636 **/
 637 void linphone_call_unref(LinphoneCall *obj){
 638         obj->refcnt--;
 639         if (obj->refcnt==0){
 640                 linphone_call_destroy(obj);
 641         }
 642 }
 643
 644 /**
 645  * Returns current parameters associated to the call.
 646 **/
 647 const LinphoneCallParams * linphone_call_get_current_params(const LinphoneCall *call){
 648         return &call->current_params;
 649 }
 650
 651 static bool_t is_video_active(const SalStreamDescription *sd){
 652         return sd->rtp_port!=0 && sd->dir!=SalStreamInactive;
 653 }
 654
 655 /**
 656  * Returns call parameters proposed by remote.
 657  *
 658  * This is useful when receiving an incoming call, to know whether the remote party
 659  * supports video, encryption or whatever.
 660 **/
 661 const LinphoneCallParams * linphone_call_get_remote_params(LinphoneCall *call){
 662         LinphoneCallParams *cp=&call->remote_params;
 663         memset(cp,0,sizeof(*cp));
 664         if (call->op){
 665                 SalMediaDescription *md=sal_call_get_remote_media_description(call->op);
 666                 if (md){
 667                         SalStreamDescription *asd,*vsd,*secure_asd,*secure_vsd;
 668
 669                         asd=sal_media_description_find_stream(md,SalProtoRtpAvp,SalAudio);
 670                         vsd=sal_media_description_find_stream(md,SalProtoRtpAvp,SalVideo);
 671                         secure_asd=sal_media_description_find_stream(md,SalProtoRtpSavp,SalAudio);
 672                         secure_vsd=sal_media_description_find_stream(md,SalProtoRtpSavp,SalVideo);
 673                         if (secure_vsd){
 674                                 cp->has_video=is_video_active(secure_vsd);
 675                                 if (secure_asd || asd==NULL)
 676                                         cp->media_encryption=LinphoneMediaEncryptionSRTP;
 677                         }else if (vsd){
 678                                 cp->has_video=is_video_active(vsd);
 679                         }
 680                         return cp;
 681                 }
 682         }
 683         return NULL;
 684 }
 685
 686 /**
 687  * Returns the remote address associated to this call
 688  *
 689 **/
 690 const LinphoneAddress * linphone_call_get_remote_address(const LinphoneCall *call){
 691         return call->dir==LinphoneCallIncoming ? call->log->from : call->log->to;
 692 }
 693
 694 /**
 695  * Returns the remote address associated to this call as a string.
 696  *
 697  * The result string must be freed by user using ms_free().
 698 **/
 699 char *linphone_call_get_remote_address_as_string(const LinphoneCall *call){
 700         return linphone_address_as_string(linphone_call_get_remote_address(call));
 701 }
 702
 703 /**
 704  * Retrieves the call's current state.
 705 **/
 706 LinphoneCallState linphone_call_get_state(const LinphoneCall *call){
 707         return call->state;
 708 }
 709
 710 /**
 711  * Returns the reason for a call termination (either error or normal termination)
 712 **/
 713 LinphoneReason linphone_call_get_reason(const LinphoneCall *call){
 714         return call->reason;
 715 }
 716
 717 /**
 718  * Get the user_pointer in the LinphoneCall
 719  *
 720  * @ingroup call_control
 721  *
 722  * return user_pointer an opaque user pointer that can be retrieved at any time
 723 **/
 724 void *linphone_call_get_user_pointer(LinphoneCall *call)
 725 {
 726         return call->user_pointer;
 727 }
 728
 729 /**
 730  * Set the user_pointer in the LinphoneCall
 731  *
 732  * @ingroup call_control
 733  *
 734  * the user_pointer is an opaque user pointer that can be retrieved at any time in the LinphoneCall
 735 **/
 736 void linphone_call_set_user_pointer(LinphoneCall *call, void *user_pointer)
 737 {
 738         call->user_pointer = user_pointer;
 739 }
 740
 741 /**
 742  * Returns the call log associated to this call.
 743 **/
 744 LinphoneCallLog *linphone_call_get_call_log(const LinphoneCall *call){
 745         return call->log;
 746 }
 747
 748 /**
 749  * Returns the refer-to uri (if the call was transfered).
 750 **/
 751 const char *linphone_call_get_refer_to(const LinphoneCall *call){
 752         return call->refer_to;
 753 }
 754
 755 /**
 756  * Returns direction of the call (incoming or outgoing).
 757 **/
 758 LinphoneCallDir linphone_call_get_dir(const LinphoneCall *call){
 759         return call->log->dir;
 760 }
 761
 762 /**
 763  * Returns the far end's user agent description string, if available.
 764 **/
 765 const char *linphone_call_get_remote_user_agent(LinphoneCall *call){
 766         if (call->op){
 767                 return sal_op_get_remote_ua (call->op);
 768         }
 769         return NULL;
 770 }
 771
 772 /**
 773  * Returns true if this calls has received a transfer that has not been
 774  * executed yet.
 775  * Pending transfers are executed when this call is being paused or closed,
 776  * locally or by remote endpoint.
 777  * If the call is already paused while receiving the transfer request, the
 778  * transfer immediately occurs.
 779 **/
 780 bool_t linphone_call_has_transfer_pending(const LinphoneCall *call){
 781         return call->refer_pending;
 782 }
 783
 784 /**
 785  * Returns call's duration in seconds.
 786 **/
 787 int linphone_call_get_duration(const LinphoneCall *call){
 788         if (call->media_start_time==0) return 0;
 789         return time(NULL)-call->media_start_time;
 790 }
 791
 792 /**
 793  * Returns the call object this call is replacing, if any.
 794  * Call replacement can occur during call transfers.
 795  * By default, the core automatically terminates the replaced call and accept the new one.
 796  * This function allows the application to know whether a new incoming call is a one that replaces another one.
 797 **/
 798 LinphoneCall *linphone_call_get_replaced_call(LinphoneCall *call){
 799         SalOp *op=sal_call_get_replaces(call->op);
 800         if (op){
 801                 return (LinphoneCall*)sal_op_get_user_pointer(op);
 802         }
 803         return NULL;
 804 }
 805
 806 /**
 807  * Indicate whether camera input should be sent to remote end.
 808 **/
 809 void linphone_call_enable_camera (LinphoneCall *call, bool_t enable){
 810 #ifdef VIDEO_ENABLED
 811         if (call->videostream!=NULL && call->videostream->ticker!=NULL){
 812                 LinphoneCore *lc=call->core;
 813                 MSWebCam *nowebcam=get_nowebcam_device();
 814                 if (call->camera_active!=enable && lc->video_conf.device!=nowebcam){
 815                         video_stream_change_camera(call->videostream,
 816                                      enable ? lc->video_conf.device : nowebcam);
 817                 }
 818         }
 819         call->camera_active=enable;
 820 #endif
 821 }
 822
 823 /**
 824  * Take a photo of currently received video and write it into a jpeg file.
 825 **/
 826 int linphone_call_take_video_snapshot(LinphoneCall *call, const char *file){
 827 #ifdef VIDEO_ENABLED
 828         if (call->videostream!=NULL && call->videostream->jpegwriter!=NULL){
 829                 return ms_filter_call_method(call->videostream->jpegwriter,MS_JPEG_WRITER_TAKE_SNAPSHOT,(void*)file);
 830         }
 831         ms_warning("Cannot take snapshot: no currently running video stream on this call.");
 832         return -1;
 833 #endif
 834         return -1;
 835 }
 836
 837 /**
 838  * Returns TRUE if camera pictures are sent to the remote party.
 839 **/
 840 bool_t linphone_call_camera_enabled (const LinphoneCall *call){
 841         return call->camera_active;
 842 }
 843
 844 /**
 845  * Enable video stream.
 846 **/
 847 void linphone_call_params_enable_video(LinphoneCallParams *cp, bool_t enabled){
 848         cp->has_video=enabled;
 849 }
 850
 851 const PayloadType* linphone_call_params_get_used_audio_codec(const LinphoneCallParams *cp) {
 852         return cp->audio_codec;
 853 }
 854
 855 const PayloadType* linphone_call_params_get_used_video_codec(const LinphoneCallParams *cp) {
 856         return cp->video_codec;
 857 }
 858
 859 /**
 860  * Returns whether video is enabled.
 861 **/
 862 bool_t linphone_call_params_video_enabled(const LinphoneCallParams *cp){
 863         return cp->has_video;
 864 }
 865
 866 enum LinphoneMediaEncryption linphone_call_params_get_media_encryption(const LinphoneCallParams *cp) {
 867         return cp->media_encryption;
 868 }
 869
 870 void linphone_call_params_set_media_encryption(LinphoneCallParams *cp, enum LinphoneMediaEncryption e) {
 871         cp->media_encryption = e;
 872 }
 873
 874
 875 /**
 876  * Enable sending of real early media (during outgoing calls).
 877 **/
 878 void linphone_call_params_enable_early_media_sending(LinphoneCallParams *cp, bool_t enabled){
 879         cp->real_early_media=enabled;
 880 }
 881
 882 bool_t linphone_call_params_early_media_sending_enabled(const LinphoneCallParams *cp){
 883         return cp->real_early_media;
 884 }
 885
 886 /**
 887  * Returns true if the call is part of the locally managed conference.
 888 **/
 889 bool_t linphone_call_params_local_conference_mode(const LinphoneCallParams *cp){
 890         return cp->in_conference;
 891 }
 892
 893 /**
 894  * Refine bandwidth settings for this call by setting a bandwidth limit for audio streams.
 895  * As a consequence, codecs whose bitrates are not compatible with this limit won't be used.
 896 **/
 897 void linphone_call_params_set_audio_bandwidth_limit(LinphoneCallParams *cp, int bandwidth){
 898         cp->audio_bw=bandwidth;
 899 }
 900
 901 #ifdef VIDEO_ENABLED
 902 /**
 903  * Request remote side to send us a Video Fast Update.
 904 **/
 905 void linphone_call_send_vfu_request(LinphoneCall *call)
 906 {
 907         if (LinphoneCallStreamsRunning == linphone_call_get_state(call))
 908                 sal_call_send_vfu_request(call->op);
 909 }
 910 #endif
 911
 912 /**
 913  *
 914 **/
 915 LinphoneCallParams * linphone_call_params_copy(const LinphoneCallParams *cp){
 916         LinphoneCallParams *ncp=ms_new0(LinphoneCallParams,1);
 917         memcpy(ncp,cp,sizeof(LinphoneCallParams));
 918         return ncp;
 919 }
 920
 921 /**
 922  *
 923 **/
 924 void linphone_call_params_destroy(LinphoneCallParams *p){
 925         ms_free(p);
 926 }
 927
 928 /**
 929  * @}
 930 **/
 931
 932
 933 #ifdef TEST_EXT_RENDERER
 934 static void rendercb(void *data, const MSPicture *local, const MSPicture *remote){
 935         ms_message("rendercb, local buffer=%p, remote buffer=%p",
 936                    local ? local->planes[0] : NULL, remote? remote->planes[0] : NULL);
 937 }
 938 #endif
 939
 940 #ifdef VIDEO_ENABLED
 941 static void video_stream_event_cb(void *user_pointer, const MSFilter *f, const unsigned int event_id, const void *args){
 942     LinphoneCall* call = (LinphoneCall*) user_pointer;
 943         ms_warning("In linphonecall.c: video_stream_event_cb");
 944         switch (event_id) {
 945                 case MS_VIDEO_DECODER_DECODING_ERRORS:
 946                         ms_warning("Case is MS_VIDEO_DECODER_DECODING_ERRORS");
 947                         linphone_call_send_vfu_request(call);
 948                         break;
 949         case MS_VIDEO_DECODER_FIRST_IMAGE_DECODED:
 950             ms_message("First video frame decoded successfully");
 951             if (call->nextVideoFrameDecoded._func != NULL)
 952                 call->nextVideoFrameDecoded._func(call, call->nextVideoFrameDecoded._user_data);
 953             break;
 954                 default:
 955                         ms_warning("Unhandled event %i", event_id);
 956                         break;
 957         }
 958 }
 959 #endif
 960
 961 void linphone_call_set_next_video_frame_decoded_callback(LinphoneCall *call, LinphoneCallCbFunc cb, void* user_data) {
 962     call->nextVideoFrameDecoded._func = cb;
 963     call->nextVideoFrameDecoded._user_data = user_data;
 964 #ifdef VIDEO_ENABLED
 965     ms_filter_call_method_noarg(call->videostream->decoder, MS_VIDEO_DECODER_RESET_FIRST_IMAGE_NOTIFICATION);
 966 #endif
 967 }
 968
 969 void linphone_call_init_audio_stream(LinphoneCall *call){
 970         LinphoneCore *lc=call->core;
 971         SalMediaDescription *md=call->localdesc;
 972         AudioStream *audiostream;
 973
 974         call->audiostream=audiostream=audio_stream_new(md->streams[0].rtp_port,md->streams[0].rtcp_port,linphone_core_ipv6_enabled(lc));
 975         if (linphone_core_echo_limiter_enabled(lc)){
 976                 const char *type=lp_config_get_string(lc->config,"sound","el_type","mic");
 977                 if (strcasecmp(type,"mic")==0)
 978                         audio_stream_enable_echo_limiter(audiostream,ELControlMic);
 979                 else if (strcasecmp(type,"full")==0)
 980                         audio_stream_enable_echo_limiter(audiostream,ELControlFull);
 981         }
 982         audio_stream_enable_gain_control(audiostream,TRUE);
 983         if (linphone_core_echo_cancellation_enabled(lc)){
 984                 int len,delay,framesize;
 985                 const char *statestr=lp_config_get_string(lc->config,"sound","ec_state",NULL);
 986                 len=lp_config_get_int(lc->config,"sound","ec_tail_len",0);
 987                 delay=lp_config_get_int(lc->config,"sound","ec_delay",0);
 988                 framesize=lp_config_get_int(lc->config,"sound","ec_framesize",0);
 989                 audio_stream_set_echo_canceller_params(audiostream,len,delay,framesize);
 990                 if (statestr && audiostream->ec){
 991                         ms_filter_call_method(audiostream->ec,MS_ECHO_CANCELLER_SET_STATE_STRING,(void*)statestr);
 992                 }
 993         }
 994         audio_stream_enable_automatic_gain_control(audiostream,linphone_core_agc_enabled(lc));
 995         {
 996                 int enabled=lp_config_get_int(lc->config,"sound","noisegate",0);
 997                 audio_stream_enable_noise_gate(audiostream,enabled);
 998         }
 999
1000         if (lc->rtptf){
1001                 RtpTransport *artp=lc->rtptf->audio_rtp_func(lc->rtptf->audio_rtp_func_data, call->audio_port);
1002                 RtpTransport *artcp=lc->rtptf->audio_rtcp_func(lc->rtptf->audio_rtcp_func_data, call->audio_port+1);
1003                 rtp_session_set_transports(audiostream->session,artp,artcp);
1004         }
1005         if ((linphone_core_get_firewall_policy(lc) == LinphonePolicyUseIce) && (call->ice_session != NULL)){
1006                 rtp_session_set_pktinfo(audiostream->session, TRUE);
1007                 audiostream->ice_check_list = ice_session_check_list(call->ice_session, 0);
1008                 ice_check_list_set_rtp_session(audiostream->ice_check_list, audiostream->session);
1009         }
1010
1011         call->audiostream_app_evq = ortp_ev_queue_new();
1012         rtp_session_register_event_queue(audiostream->session,call->audiostream_app_evq);
1013 }
1014
1015 void linphone_call_init_video_stream(LinphoneCall *call){
1016 #ifdef VIDEO_ENABLED
1017         LinphoneCore *lc=call->core;
1018         SalMediaDescription *md=call->localdesc;
1019
1020         if ((lc->video_conf.display || lc->video_conf.capture) && md->streams[1].rtp_port>0){
1021                 int video_recv_buf_size=lp_config_get_int(lc->config,"video","recv_buf_size",0);
1022                 call->videostream=video_stream_new(md->streams[1].rtp_port,md->streams[1].rtcp_port,linphone_core_ipv6_enabled(lc));
1023                 video_stream_enable_display_filter_auto_rotate(call->videostream, lp_config_get_int(lc->config,"video","display_filter_auto_rotate",0));
1024                 if (video_recv_buf_size>0) rtp_session_set_recv_buf_size(call->videostream->session,video_recv_buf_size);
1025
1026                 if( lc->video_conf.displaytype != NULL)
1027                         video_stream_set_display_filter_name(call->videostream,lc->video_conf.displaytype);
1028                 video_stream_set_event_callback(call->videostream,video_stream_event_cb, call);
1029                 if (lc->rtptf){
1030                         RtpTransport *vrtp=lc->rtptf->video_rtp_func(lc->rtptf->video_rtp_func_data, call->video_port);
1031                         RtpTransport *vrtcp=lc->rtptf->video_rtcp_func(lc->rtptf->video_rtcp_func_data, call->video_port+1);
1032                         rtp_session_set_transports(call->videostream->session,vrtp,vrtcp);
1033                 }
1034                 if ((linphone_core_get_firewall_policy(lc) == LinphonePolicyUseIce) && (call->ice_session != NULL) && (ice_session_check_list(call->ice_session, 1))){
1035                         rtp_session_set_pktinfo(call->videostream->session, TRUE);
1036                         call->videostream->ice_check_list = ice_session_check_list(call->ice_session, 1);
1037                         ice_check_list_set_rtp_session(call->videostream->ice_check_list, call->videostream->session);
1038                 }
1039                 call->videostream_app_evq = ortp_ev_queue_new();
1040                 rtp_session_register_event_queue(call->videostream->session,call->videostream_app_evq);
1041 #ifdef TEST_EXT_RENDERER
1042                 video_stream_set_render_callback(call->videostream,rendercb,NULL);
1043 #endif
1044         }
1045 #else
1046         call->videostream=NULL;
1047 #endif
1048 }
1049
1050 void linphone_call_init_media_streams(LinphoneCall *call){
1051         linphone_call_init_audio_stream(call);
1052         linphone_call_init_video_stream(call);
1053 }
1054
1055
1056 static int dtmf_tab[16]={'0','1','2','3','4','5','6','7','8','9','*','#','A','B','C','D'};
1057
1058 static void linphone_core_dtmf_received(RtpSession* s, int dtmf, void* user_data){
1059         LinphoneCore* lc = (LinphoneCore*)user_data;
1060         if (dtmf<0 || dtmf>15){
1061                 ms_warning("Bad dtmf value %i",dtmf);
1062                 return;
1063         }
1064         if (lc->vtable.dtmf_received != NULL)
1065                 lc->vtable.dtmf_received(lc, linphone_core_get_current_call(lc), dtmf_tab[dtmf]);
1066 }
1067
1068 static void parametrize_equalizer(LinphoneCore *lc, AudioStream *st){
1069         if (st->equalizer){
1070                 MSFilter *f=st->equalizer;
1071                 int enabled=lp_config_get_int(lc->config,"sound","eq_active",0);
1072                 const char *gains=lp_config_get_string(lc->config,"sound","eq_gains",NULL);
1073                 ms_filter_call_method(f,MS_EQUALIZER_SET_ACTIVE,&enabled);
1074                 if (enabled){
1075                         if (gains){
1076                                 do{
1077                                         int bytes;
1078                                         MSEqualizerGain g;
1079                                         if (sscanf(gains,"%f:%f:%f %n",&g.frequency,&g.gain,&g.width,&bytes)==3){
1080                                                 ms_message("Read equalizer gains: %f(~%f) --> %f",g.frequency,g.width,g.gain);
1081                                                 ms_filter_call_method(f,MS_EQUALIZER_SET_GAIN,&g);
1082                                                 gains+=bytes;
1083                                         }else break;
1084                                 }while(1);
1085                         }
1086                 }
1087         }
1088 }
1089
1090 void _post_configure_audio_stream(AudioStream *st, LinphoneCore *lc, bool_t muted){
1091         float mic_gain=lp_config_get_float(lc->config,"sound","mic_gain",1);
1092         float thres = 0;
1093         float recv_gain;
1094         float ng_thres=lp_config_get_float(lc->config,"sound","ng_thres",0.05);
1095         float ng_floorgain=lp_config_get_float(lc->config,"sound","ng_floorgain",0);
1096         int dc_removal=lp_config_get_int(lc->config,"sound","dc_removal",0);
1097
1098         if (!muted)
1099                 audio_stream_set_mic_gain(st,mic_gain);
1100         else
1101                 audio_stream_set_mic_gain(st,0);
1102
1103         recv_gain = lc->sound_conf.soft_play_lev;
1104         if (recv_gain != 0) {
1105                 linphone_core_set_playback_gain_db (lc,recv_gain);
1106         }
1107
1108         if (st->volsend){
1109                 ms_filter_call_method(st->volsend,MS_VOLUME_REMOVE_DC,&dc_removal);
1110                 float speed=lp_config_get_float(lc->config,"sound","el_speed",-1);
1111                 thres=lp_config_get_float(lc->config,"sound","el_thres",-1);
1112                 float force=lp_config_get_float(lc->config,"sound","el_force",-1);
1113                 int sustain=lp_config_get_int(lc->config,"sound","el_sustain",-1);
1114                 float transmit_thres=lp_config_get_float(lc->config,"sound","el_transmit_thres",-1);
1115                 MSFilter *f=NULL;
1116                 f=st->volsend;
1117                 if (speed==-1) speed=0.03;
1118                 if (force==-1) force=25;
1119                 ms_filter_call_method(f,MS_VOLUME_SET_EA_SPEED,&speed);
1120                 ms_filter_call_method(f,MS_VOLUME_SET_EA_FORCE,&force);
1121                 if (thres!=-1)
1122                         ms_filter_call_method(f,MS_VOLUME_SET_EA_THRESHOLD,&thres);
1123                 if (sustain!=-1)
1124                         ms_filter_call_method(f,MS_VOLUME_SET_EA_SUSTAIN,&sustain);
1125                 if (transmit_thres!=-1)
1126                                 ms_filter_call_method(f,MS_VOLUME_SET_EA_TRANSMIT_THRESHOLD,&transmit_thres);
1127
1128                 ms_filter_call_method(st->volsend,MS_VOLUME_SET_NOISE_GATE_THRESHOLD,&ng_thres);
1129                 ms_filter_call_method(st->volsend,MS_VOLUME_SET_NOISE_GATE_FLOORGAIN,&ng_floorgain);
1130         }
1131         if (st->volrecv){
1132                 /* parameters for a limited noise-gate effect, using echo limiter threshold */
1133                 float floorgain = 1/mic_gain;
1134                 int spk_agc=lp_config_get_int(lc->config,"sound","speaker_agc_enabled",0);
1135                 ms_filter_call_method(st->volrecv, MS_VOLUME_ENABLE_AGC, &spk_agc);
1136                 ms_filter_call_method(st->volrecv,MS_VOLUME_SET_NOISE_GATE_THRESHOLD,&ng_thres);
1137                 ms_filter_call_method(st->volrecv,MS_VOLUME_SET_NOISE_GATE_FLOORGAIN,&floorgain);
1138         }
1139         parametrize_equalizer(lc,st);
1140 }
1141
1142 static void post_configure_audio_streams(LinphoneCall*call){
1143         AudioStream *st=call->audiostream;
1144         LinphoneCore *lc=call->core;
1145         _post_configure_audio_stream(st,lc,call->audio_muted);
1146         if (lc->vtable.dtmf_received!=NULL){
1147                 /* replace by our default action*/
1148                 audio_stream_play_received_dtmfs(call->audiostream,FALSE);
1149                 rtp_session_signal_connect(call->audiostream->session,"telephone-event",(RtpCallback)linphone_core_dtmf_received,(unsigned long)lc);
1150         }
1151 }
1152
1153 static RtpProfile *make_profile(LinphoneCall *call, const SalMediaDescription *md, const SalStreamDescription *desc, int *used_pt){
1154         int bw;
1155         const MSList *elem;
1156         RtpProfile *prof=rtp_profile_new("Call profile");
1157         bool_t first=TRUE;
1158         int remote_bw=0;
1159         LinphoneCore *lc=call->core;
1160         int up_ptime=0;
1161         *used_pt=-1;
1162
1163         for(elem=desc->payloads;elem!=NULL;elem=elem->next){
1164                 PayloadType *pt=(PayloadType*)elem->data;
1165                 int number;
1166
1167                 if ((pt->flags & PAYLOAD_TYPE_FLAG_CAN_SEND) && first) {
1168                         if (desc->type==SalAudio){
1169                                 linphone_core_update_allocated_audio_bandwidth_in_call(call,pt);
1170                                 up_ptime=linphone_core_get_upload_ptime(lc);
1171                         }
1172                         *used_pt=payload_type_get_number(pt);
1173                         first=FALSE;
1174                 }
1175                 if (desc->bandwidth>0) remote_bw=desc->bandwidth;
1176                 else if (md->bandwidth>0) {
1177                         /*case where b=AS is given globally, not per stream*/
1178                         remote_bw=md->bandwidth;
1179                         if (desc->type==SalVideo){
1180                                 remote_bw=get_video_bandwidth(remote_bw,call->audio_bw);
1181                         }
1182                 }
1183
1184                 if (desc->type==SalAudio){
1185                                 bw=get_min_bandwidth(call->audio_bw,remote_bw);
1186                 }else bw=get_min_bandwidth(get_video_bandwidth(linphone_core_get_upload_bandwidth (lc),call->audio_bw),remote_bw);
1187                 if (bw>0) pt->normal_bitrate=bw*1000;
1188                 else if (desc->type==SalAudio){
1189                         pt->normal_bitrate=-1;
1190                 }
1191                 if (desc->ptime>0){
1192                         up_ptime=desc->ptime;
1193                 }
1194                 if (up_ptime>0){
1195                         char tmp[40];
1196                         snprintf(tmp,sizeof(tmp),"ptime=%i",up_ptime);
1197                         payload_type_append_send_fmtp(pt,tmp);
1198                 }
1199                 number=payload_type_get_number(pt);
1200                 if (rtp_profile_get_payload(prof,number)!=NULL){
1201                         ms_warning("A payload type with number %i already exists in profile !",number);
1202                 }else
1203                         rtp_profile_set_payload(prof,number,pt);
1204         }
1205         return prof;
1206 }
1207
1208
1209 static void setup_ring_player(LinphoneCore *lc, LinphoneCall *call){
1210         int pause_time=3000;
1211         audio_stream_play(call->audiostream,lc->sound_conf.ringback_tone);
1212         ms_filter_call_method(call->audiostream->soundread,MS_FILE_PLAYER_LOOP,&pause_time);
1213 }
1214
1215 #define LINPHONE_RTCP_SDES_TOOL "Linphone-" LINPHONE_VERSION
1216
1217 static bool_t linphone_call_sound_resources_available(LinphoneCall *call){
1218         LinphoneCore *lc=call->core;
1219         LinphoneCall *current=linphone_core_get_current_call(lc);
1220         return !linphone_core_is_in_conference(lc) &&
1221                 (current==NULL || current==call);
1222 }
1223 static int find_crypto_index_from_tag(const SalSrtpCryptoAlgo crypto[],unsigned char tag) {
1224     int i;
1225     for(i=0; i<SAL_CRYPTO_ALGO_MAX; i++) {
1226         if (crypto[i].tag == tag) {
1227             return i;
1228         }
1229     }
1230     return -1;
1231 }
1232 static void linphone_call_start_audio_stream(LinphoneCall *call, const char *cname, bool_t muted, bool_t send_ringbacktone, bool_t use_arc){
1233         LinphoneCore *lc=call->core;
1234         int jitt_comp=lc->rtp_conf.audio_jitt_comp;
1235         int used_pt=-1;
1236         /* look for savp stream first */
1237         const SalStreamDescription *stream=sal_media_description_find_stream(call->resultdesc,
1238                                                 SalProtoRtpSavp,SalAudio);
1239         /* no savp audio stream, use avp */
1240         if (!stream)
1241                 stream=sal_media_description_find_stream(call->resultdesc,
1242                                                 SalProtoRtpAvp,SalAudio);
1243
1244         if (stream && stream->dir!=SalStreamInactive && stream->rtp_port!=0){
1245                 MSSndCard *playcard=lc->sound_conf.lsd_card ?
1246                         lc->sound_conf.lsd_card : lc->sound_conf.play_sndcard;
1247                 MSSndCard *captcard=lc->sound_conf.capt_sndcard;
1248                 const char *playfile=lc->play_file;
1249                 const char *recfile=lc->rec_file;
1250                 call->audio_profile=make_profile(call,call->resultdesc,stream,&used_pt);
1251                 bool_t use_ec;
1252
1253                 if (used_pt!=-1){
1254                         call->current_params.audio_codec = rtp_profile_get_payload(call->audio_profile, used_pt);
1255                         if (playcard==NULL) {
1256                                 ms_warning("No card defined for playback !");
1257                         }
1258                         if (captcard==NULL) {
1259                                 ms_warning("No card defined for capture !");
1260                         }
1261                         /*Replace soundcard filters by inactive file players or recorders
1262                          when placed in recvonly or sendonly mode*/
1263                         if (stream->rtp_port==0 || stream->dir==SalStreamRecvOnly){
1264                                 captcard=NULL;
1265                                 playfile=NULL;
1266                         }else if (stream->dir==SalStreamSendOnly){
1267                                 playcard=NULL;
1268                                 captcard=NULL;
1269                                 recfile=NULL;
1270                                 /*And we will eventually play "playfile" if set by the user*/
1271                                 /*playfile=NULL;*/
1272                         }
1273                         if (send_ringbacktone){
1274                                 captcard=NULL;
1275                                 playfile=NULL;/* it is setup later*/
1276                         }
1277                         /*if playfile are supplied don't use soundcards*/
1278                         if (lc->use_files) {
1279                                 captcard=NULL;
1280                                 playcard=NULL;
1281                         }
1282                         if (call->params.in_conference){
1283                                 /* first create the graph without soundcard resources*/
1284                                 captcard=playcard=NULL;
1285                         }
1286                         if (!linphone_call_sound_resources_available(call)){
1287                                 ms_message("Sound resources are used by another call, not using soundcard.");
1288                                 captcard=playcard=NULL;
1289                         }
1290                         use_ec=captcard==NULL ? FALSE : linphone_core_echo_cancellation_enabled(lc);
1291                         if (playcard &&  stream->max_rate>0) ms_snd_card_set_preferred_sample_rate(playcard, stream->max_rate);
1292                         if (captcard &&  stream->max_rate>0) ms_snd_card_set_preferred_sample_rate(captcard, stream->max_rate);
1293                         audio_stream_enable_adaptive_bitrate_control(call->audiostream,use_arc);
1294                         audio_stream_start_full(
1295                                 call->audiostream,
1296                                 call->audio_profile,
1297                                 stream->rtp_addr[0]!='\0' ? stream->rtp_addr : call->resultdesc->addr,
1298                                 stream->rtp_port,
1299                                 stream->rtcp_addr[0]!='\0' ? stream->rtcp_addr : call->resultdesc->addr,
1300                                 linphone_core_rtcp_enabled(lc) ? (stream->rtcp_port) : 0,
1301                                 used_pt,
1302                                 jitt_comp,
1303                                 playfile,
1304                                 recfile,
1305                                 playcard,
1306                                 captcard,
1307                                 use_ec
1308                                 );
1309                         post_configure_audio_streams(call);
1310                         if (muted && !send_ringbacktone){
1311                                 audio_stream_set_mic_gain(call->audiostream,0);
1312                         }
1313                         if (stream->dir==SalStreamSendOnly && playfile!=NULL){
1314                                 int pause_time=500;
1315                                 ms_filter_call_method(call->audiostream->soundread,MS_FILE_PLAYER_LOOP,&pause_time);
1316                         }
1317                         if (send_ringbacktone){
1318                                 setup_ring_player(lc,call);
1319                         }
1320                         audio_stream_set_rtcp_information(call->audiostream, cname, LINPHONE_RTCP_SDES_TOOL);
1321
1322             /* valid local tags are > 0 */
1323                         if (stream->proto == SalProtoRtpSavp) {
1324                 const SalStreamDescription *local_st_desc=sal_media_description_find_stream(call->localdesc,
1325                                                                                             SalProtoRtpSavp,SalAudio);
1326                 int crypto_idx = find_crypto_index_from_tag(local_st_desc->crypto, stream->crypto_local_tag);
1327
1328                 if (crypto_idx >= 0) {
1329                     audio_stream_enable_strp(
1330                                              call->audiostream,
1331                                              stream->crypto[0].algo,
1332                                              local_st_desc->crypto[crypto_idx].master_key,
1333                                              stream->crypto[0].master_key);
1334                     call->audiostream_encrypted=TRUE;
1335                 } else {
1336                     ms_warning("Failed to find local crypto algo with tag: %d", stream->crypto_local_tag);
1337                     call->audiostream_encrypted=FALSE;
1338                 }
1339                         }else call->audiostream_encrypted=FALSE;
1340                         if (call->params.in_conference){
1341                                 /*transform the graph to connect it to the conference filter */
1342                                 bool_t mute=stream->dir==SalStreamRecvOnly;
1343                                 linphone_call_add_to_conf(call, mute);
1344                         }
1345                         call->current_params.in_conference=call->params.in_conference;
1346                 }else ms_warning("No audio stream accepted ?");
1347         }
1348 }
1349
1350 static void linphone_call_start_video_stream(LinphoneCall *call, const char *cname,bool_t all_inputs_muted){
1351 #ifdef VIDEO_ENABLED
1352         LinphoneCore *lc=call->core;
1353         int used_pt=-1;
1354         /* look for savp stream first */
1355         const SalStreamDescription *vstream=sal_media_description_find_stream(call->resultdesc,
1356                                                 SalProtoRtpSavp,SalVideo);
1357         /* no savp audio stream, use avp */
1358         if (!vstream)
1359                 vstream=sal_media_description_find_stream(call->resultdesc,
1360                                                 SalProtoRtpAvp,SalVideo);
1361
1362         /* shutdown preview */
1363         if (lc->previewstream!=NULL) {
1364                 video_preview_stop(lc->previewstream);
1365                 lc->previewstream=NULL;
1366         }
1367
1368         if (vstream!=NULL && vstream->dir!=SalStreamInactive && vstream->rtp_port!=0) {
1369                 const char *rtp_addr=vstream->rtp_addr[0]!='\0' ? vstream->rtp_addr : call->resultdesc->addr;
1370                 const char *rtcp_addr=vstream->rtcp_addr[0]!='\0' ? vstream->rtcp_addr : call->resultdesc->addr;
1371                 call->video_profile=make_profile(call,call->resultdesc,vstream,&used_pt);
1372                 if (used_pt!=-1){
1373                         call->current_params.video_codec = rtp_profile_get_payload(call->video_profile, used_pt);
1374                         VideoStreamDir dir=VideoStreamSendRecv;
1375                         MSWebCam *cam=lc->video_conf.device;
1376                         bool_t is_inactive=FALSE;
1377
1378                         call->current_params.has_video=TRUE;
1379
1380                         video_stream_enable_adaptive_bitrate_control(call->videostream,
1381                                                                   linphone_core_adaptive_rate_control_enabled(lc));
1382                         video_stream_set_sent_video_size(call->videostream,linphone_core_get_preferred_video_size(lc));
1383                         video_stream_enable_self_view(call->videostream,lc->video_conf.selfview);
1384                         if (lc->video_window_id!=0)
1385                                 video_stream_set_native_window_id(call->videostream,lc->video_window_id);
1386                         if (lc->preview_window_id!=0)
1387                                 video_stream_set_native_preview_window_id (call->videostream,lc->preview_window_id);
1388                         video_stream_use_preview_video_window (call->videostream,lc->use_preview_window);
1389
1390                         if (vstream->dir==SalStreamSendOnly && lc->video_conf.capture ){
1391                                 cam=get_nowebcam_device();
1392                                 dir=VideoStreamSendOnly;
1393                         }else if (vstream->dir==SalStreamRecvOnly && lc->video_conf.display ){
1394                                 dir=VideoStreamRecvOnly;
1395                         }else if (vstream->dir==SalStreamSendRecv){
1396                                 if (lc->video_conf.display && lc->video_conf.capture)
1397                                         dir=VideoStreamSendRecv;
1398                                 else if (lc->video_conf.display)
1399                                         dir=VideoStreamRecvOnly;
1400                                 else
1401                                         dir=VideoStreamSendOnly;
1402                         }else{
1403                                 ms_warning("video stream is inactive.");
1404                                 /*either inactive or incompatible with local capabilities*/
1405                                 is_inactive=TRUE;
1406                         }
1407                         if (call->camera_active==FALSE || all_inputs_muted){
1408                                 cam=get_nowebcam_device();
1409                         }
1410                         if (!is_inactive){
1411                 call->log->video_enabled = TRUE;
1412                                 video_stream_set_direction (call->videostream, dir);
1413                                 ms_message("%s lc rotation:%d\n", __FUNCTION__, lc->device_rotation);
1414                                 video_stream_set_device_rotation(call->videostream, lc->device_rotation);
1415                                 video_stream_start(call->videostream,
1416                                         call->video_profile, rtp_addr, vstream->rtp_port,
1417                                         rtcp_addr, linphone_core_rtcp_enabled(lc) ? (vstream->rtcp_port) : 0,
1418                                         used_pt, lc->rtp_conf.audio_jitt_comp, cam);
1419                                 video_stream_set_rtcp_information(call->videostream, cname,LINPHONE_RTCP_SDES_TOOL);
1420                         }
1421
1422                         if (vstream->proto == SalProtoRtpSavp) {
1423                                 const SalStreamDescription *local_st_desc=sal_media_description_find_stream(call->localdesc,
1424                                                 SalProtoRtpSavp,SalVideo);
1425
1426                                 video_stream_enable_strp(
1427                                         call->videostream,
1428                                         vstream->crypto[0].algo,
1429                                         local_st_desc->crypto[0].master_key,
1430                                         vstream->crypto[0].master_key
1431                                         );
1432                                 call->videostream_encrypted=TRUE;
1433                         }else{
1434                                 call->videostream_encrypted=FALSE;
1435                         }
1436                 }else ms_warning("No video stream accepted.");
1437         }else{
1438                 ms_warning("No valid video stream defined.");
1439         }
1440 #endif
1441 }
1442
1443 void linphone_call_start_media_streams(LinphoneCall *call, bool_t all_inputs_muted, bool_t send_ringbacktone){
1444         LinphoneCore *lc=call->core;
1445
1446         call->current_params.audio_codec = NULL;
1447         call->current_params.video_codec = NULL;
1448
1449         LinphoneAddress *me=linphone_core_get_primary_contact_parsed(lc);
1450         char *cname;
1451         bool_t use_arc=linphone_core_adaptive_rate_control_enabled(lc);
1452 #ifdef VIDEO_ENABLED
1453         const SalStreamDescription *vstream=sal_media_description_find_stream(call->resultdesc,
1454                                                         SalProtoRtpAvp,SalVideo);
1455 #endif
1456
1457         if(call->audiostream == NULL)
1458         {
1459                 ms_fatal("start_media_stream() called without prior init !");
1460                 return;
1461         }
1462         cname=linphone_address_as_string_uri_only(me);
1463
1464 #if defined(VIDEO_ENABLED)
1465         if (vstream!=NULL && vstream->dir!=SalStreamInactive && vstream->payloads!=NULL){
1466                 /*when video is used, do not make adaptive rate control on audio, it is stupid.*/
1467                 use_arc=FALSE;
1468         }
1469 #endif
1470         linphone_call_start_audio_stream(call,cname,all_inputs_muted,send_ringbacktone,use_arc);
1471         call->current_params.has_video=FALSE;
1472         if (call->videostream!=NULL) {
1473                 linphone_call_start_video_stream(call,cname,all_inputs_muted);
1474         }
1475
1476         call->all_muted=all_inputs_muted;
1477         call->playing_ringbacktone=send_ringbacktone;
1478         call->up_bw=linphone_core_get_upload_bandwidth(lc);
1479
1480         if (call->params.media_encryption==LinphoneMediaEncryptionZRTP) {
1481                 OrtpZrtpParams params;
1482                 /*will be set later when zrtp is activated*/
1483                 call->current_params.media_encryption=LinphoneMediaEncryptionNone;
1484
1485                 params.zid_file=lc->zrtp_secrets_cache;
1486                 audio_stream_enable_zrtp(call->audiostream,&params);
1487         }else if (call->params.media_encryption==LinphoneMediaEncryptionSRTP){
1488                 call->current_params.media_encryption=linphone_call_are_all_streams_encrypted(call) ?
1489                         LinphoneMediaEncryptionSRTP : LinphoneMediaEncryptionNone;
1490         }
1491
1492         /*also reflect the change if the "wished" params, in order to avoid to propose SAVP or video again
1493          * further in the call, for example during pause,resume, conferencing reINVITEs*/
1494         linphone_call_fix_call_parameters(call);
1495         if ((call->ice_session != NULL) && (ice_session_state(call->ice_session) != IS_Completed)) {
1496                 ice_session_start_connectivity_checks(call->ice_session);
1497         }
1498
1499         goto end;
1500         end:
1501                 ms_free(cname);
1502                 linphone_address_destroy(me);
1503 }
1504
1505 void linphone_call_start_media_streams_for_ice_gathering(LinphoneCall *call){
1506         audio_stream_start_ice_gathering(call->audiostream);
1507         if (call->videostream) {
1508                 video_stream_start_ice_gathering(call->videostream);
1509         }
1510 }
1511
1512 void linphone_call_delete_ice_session(LinphoneCall *call){
1513         if (call->ice_session != NULL) {
1514                 ice_session_destroy(call->ice_session);
1515                 call->ice_session = NULL;
1516                 if (call->audiostream != NULL) call->audiostream->ice_check_list = NULL;
1517                 if (call->videostream != NULL) call->videostream->ice_check_list = NULL;
1518         }
1519 }
1520
1521 static void linphone_call_log_fill_stats(LinphoneCallLog *log, AudioStream *st){
1522         audio_stream_get_local_rtp_stats (st,&log->local_stats);
1523         log->quality=audio_stream_get_average_quality_rating(st);
1524 }
1525
1526 void linphone_call_stop_media_streams(LinphoneCall *call){
1527         if (call->audiostream!=NULL) {
1528                 call->audiostream->ice_check_list = NULL;
1529                 rtp_session_unregister_event_queue(call->audiostream->session,call->audiostream_app_evq);
1530                 ortp_ev_queue_flush(call->audiostream_app_evq);
1531                 ortp_ev_queue_destroy(call->audiostream_app_evq);
1532                 call->audiostream_app_evq=NULL;
1533
1534                 if (call->audiostream->ec){
1535                         const char *state_str=NULL;
1536                         ms_filter_call_method(call->audiostream->ec,MS_ECHO_CANCELLER_GET_STATE_STRING,&state_str);
1537                         if (state_str){
1538                                 ms_message("Writing echo canceler state, %i bytes",(int)strlen(state_str));
1539                                 lp_config_set_string(call->core->config,"sound","ec_state",state_str);
1540                         }
1541                 }
1542                 linphone_call_log_fill_stats (call->log,call->audiostream);
1543                 if (call->endpoint){
1544                         linphone_call_remove_from_conf(call);
1545                 }
1546                 audio_stream_stop(call->audiostream);
1547                 call->audiostream=NULL;
1548         }
1549
1550
1551 #ifdef VIDEO_ENABLED
1552         if (call->videostream!=NULL){
1553                 call->videostream->ice_check_list = NULL;
1554                 rtp_session_unregister_event_queue(call->videostream->session,call->videostream_app_evq);
1555                 ortp_ev_queue_flush(call->videostream_app_evq);
1556                 ortp_ev_queue_destroy(call->videostream_app_evq);
1557                 call->videostream_app_evq=NULL;
1558                 video_stream_stop(call->videostream);
1559                 call->videostream=NULL;
1560         }
1561 #endif
1562         ms_event_queue_skip(call->core->msevq);
1563
1564         if (call->audio_profile){
1565                 rtp_profile_clear_all(call->audio_profile);
1566                 rtp_profile_destroy(call->audio_profile);
1567                 call->audio_profile=NULL;
1568         }
1569         if (call->video_profile){
1570                 rtp_profile_clear_all(call->video_profile);
1571                 rtp_profile_destroy(call->video_profile);
1572                 call->video_profile=NULL;
1573         }
1574 }
1575
1576
1577
1578 void linphone_call_enable_echo_cancellation(LinphoneCall *call, bool_t enable) {
1579         if (call!=NULL && call->audiostream!=NULL && call->audiostream->ec){
1580                 bool_t bypass_mode = !enable;
1581                 ms_filter_call_method(call->audiostream->ec,MS_ECHO_CANCELLER_SET_BYPASS_MODE,&bypass_mode);
1582         }
1583 }
1584 bool_t linphone_call_echo_cancellation_enabled(LinphoneCall *call) {
1585         if (call!=NULL && call->audiostream!=NULL && call->audiostream->ec){
1586                 bool_t val;
1587                 ms_filter_call_method(call->audiostream->ec,MS_ECHO_CANCELLER_GET_BYPASS_MODE,&val);
1588                 return !val;
1589         } else {
1590                 return linphone_core_echo_cancellation_enabled(call->core);
1591         }
1592 }
1593
1594 void linphone_call_enable_echo_limiter(LinphoneCall *call, bool_t val){
1595         if (call!=NULL && call->audiostream!=NULL ) {
1596                 if (val) {
1597                 const char *type=lp_config_get_string(call->core->config,"sound","el_type","mic");
1598                 if (strcasecmp(type,"mic")==0)
1599                         audio_stream_enable_echo_limiter(call->audiostream,ELControlMic);
1600                 else if (strcasecmp(type,"full")==0)
1601                         audio_stream_enable_echo_limiter(call->audiostream,ELControlFull);
1602                 } else {
1603                         audio_stream_enable_echo_limiter(call->audiostream,ELInactive);
1604                 }
1605         }
1606 }
1607
1608 bool_t linphone_call_echo_limiter_enabled(const LinphoneCall *call){
1609         if (call!=NULL && call->audiostream!=NULL ){
1610                 return call->audiostream->el_type !=ELInactive ;
1611         } else {
1612                 return linphone_core_echo_limiter_enabled(call->core);
1613         }
1614 }
1615
1616 /**
1617  * @addtogroup call_misc
1618  * @{
1619 **/
1620
1621 /**
1622  * Returns the measured sound volume played locally (received from remote).
1623  * It is expressed in dbm0.
1624 **/
1625 float linphone_call_get_play_volume(LinphoneCall *call){
1626         AudioStream *st=call->audiostream;
1627         if (st && st->volrecv){
1628                 float vol=0;
1629                 ms_filter_call_method(st->volrecv,MS_VOLUME_GET,&vol);
1630                 return vol;
1631
1632         }
1633         return LINPHONE_VOLUME_DB_LOWEST;
1634 }
1635
1636 /**
1637  * Returns the measured sound volume recorded locally (sent to remote).
1638  * It is expressed in dbm0.
1639 **/
1640 float linphone_call_get_record_volume(LinphoneCall *call){
1641         AudioStream *st=call->audiostream;
1642         if (st && st->volsend && !call->audio_muted && call->state==LinphoneCallStreamsRunning){
1643                 float vol=0;
1644                 ms_filter_call_method(st->volsend,MS_VOLUME_GET,&vol);
1645                 return vol;
1646
1647         }
1648         return LINPHONE_VOLUME_DB_LOWEST;
1649 }
1650
1651 /**
1652  * Obtain real-time quality rating of the call
1653  *
1654  * Based on local RTP statistics and RTCP feedback, a quality rating is computed and updated
1655  * during all the duration of the call. This function returns its value at the time of the function call.
1656  * It is expected that the rating is updated at least every 5 seconds or so.
1657  * The rating is a floating point number comprised between 0 and 5.
1658  *
1659  * 4-5 = good quality <br>
1660  * 3-4 = average quality <br>
1661  * 2-3 = poor quality <br>
1662  * 1-2 = very poor quality <br>
1663  * 0-1 = can't be worse, mostly unusable <br>
1664  *
1665  * @returns The function returns -1 if no quality measurement is available, for example if no
1666  * active audio stream exist. Otherwise it returns the quality rating.
1667 **/
1668 float linphone_call_get_current_quality(LinphoneCall *call){
1669         if (call->audiostream){
1670                 return audio_stream_get_quality_rating(call->audiostream);
1671         }
1672         return -1;
1673 }
1674
1675 /**
1676  * Returns call quality averaged over all the duration of the call.
1677  *
1678  * See linphone_call_get_current_quality() for more details about quality measurement.
1679 **/
1680 float linphone_call_get_average_quality(LinphoneCall *call){
1681         if (call->audiostream){
1682                 return audio_stream_get_average_quality_rating(call->audiostream);
1683         }
1684         return -1;
1685 }
1686
1687 /**
1688  * Access last known statistics for audio stream, for a given call.
1689 **/
1690 const LinphoneCallStats *linphone_call_get_audio_stats(const LinphoneCall *call) {
1691         return &call->stats[LINPHONE_CALL_STATS_AUDIO];
1692 }
1693
1694 /**
1695  * Access last known statistics for video stream, for a given call.
1696 **/
1697 const LinphoneCallStats *linphone_call_get_video_stats(const LinphoneCall *call) {
1698         return &call->stats[LINPHONE_CALL_STATS_VIDEO];
1699 }
1700
1701
1702 /**
1703  * @}
1704 **/
1705
1706 static void display_bandwidth(RtpSession *as, RtpSession *vs){
1707         ms_message("bandwidth usage: audio=[d=%.1f,u=%.1f] video=[d=%.1f,u=%.1f] kbit/sec",
1708         (as!=NULL) ? (rtp_session_compute_recv_bandwidth(as)*1e-3) : 0,
1709         (as!=NULL) ? (rtp_session_compute_send_bandwidth(as)*1e-3) : 0,
1710         (vs!=NULL) ? (rtp_session_compute_recv_bandwidth(vs)*1e-3) : 0,
1711         (vs!=NULL) ? (rtp_session_compute_send_bandwidth(vs)*1e-3) : 0);
1712 }
1713
1714 static void linphone_core_disconnected(LinphoneCore *lc, LinphoneCall *call){
1715         char temp[256];
1716         char *from=NULL;
1717         if(call)
1718                 from = linphone_call_get_remote_address_as_string(call);
1719         if (from)
1720         {
1721                 snprintf(temp,sizeof(temp),"Remote end %s seems to have disconnected, the call is going to be closed.",from);
1722                 free(from);
1723         }
1724         else
1725         {
1726                 snprintf(temp,sizeof(temp),"Remote end seems to have disconnected, the call is going to be closed.");
1727         }
1728         if (lc->vtable.display_warning!=NULL)
1729                 lc->vtable.display_warning(lc,temp);
1730         linphone_core_terminate_call(lc,call);
1731 }
1732
1733 static void handle_ice_events(LinphoneCall *call, OrtpEvent *ev){
1734         OrtpEventType evt=ortp_event_get_type(ev);
1735         OrtpEventData *evd=ortp_event_get_data(ev);
1736
1737         if (evt == ORTP_EVENT_ICE_SESSION_PROCESSING_FINISHED) {
1738                 if (ice_session_role(call->ice_session) == IR_Controlling) {
1739                         linphone_core_update_call(call->core, call, &call->current_params);
1740                 }
1741         } else if (evt == ORTP_EVENT_ICE_GATHERING_FINISHED) {
1742                 LinphoneCallParams *params;
1743                 switch (call->state) {
1744                         case LinphoneCallStreamsRunning:
1745                         case LinphoneCallUpdatedByRemote:
1746                                 if (evd->info.ice_processing_successful==TRUE) {
1747                                         ice_session_compute_candidates_foundations(call->ice_session);
1748                                         ice_session_eliminate_redundant_candidates(call->ice_session);
1749                                         ice_session_choose_default_candidates(call->ice_session);
1750                                 }
1751                                 params = linphone_call_params_copy(linphone_call_get_current_params(call));
1752                                 linphone_call_params_enable_video(params, TRUE);
1753                                 if (call->state == LinphoneCallStreamsRunning) {
1754                                         linphone_core_update_call(call->core, call, params);
1755                                 } else {        /* LinphoneCallUpdatedByRemote */
1756                                         linphone_core_accept_call_update(call->core, call, params);
1757                                 }
1758                                 linphone_call_params_destroy(params);
1759                                 break;
1760                         case LinphoneCallOutgoingInit:
1761                         default:
1762                                 linphone_call_stop_media_streams(call);
1763                                 if (evd->info.ice_processing_successful==TRUE) {
1764                                         ice_session_compute_candidates_foundations(call->ice_session);
1765                                         ice_session_eliminate_redundant_candidates(call->ice_session);
1766                                         ice_session_choose_default_candidates(call->ice_session);
1767                                 } else {
1768                                         linphone_call_delete_ice_session(call);
1769                                 }
1770                                 if (call->state==LinphoneCallOutgoingInit) {
1771                                         linphone_core_start_invite(call->core,call,NULL);
1772                                 } else {
1773                                         linphone_core_notify_incoming_call(call->core,call);
1774                                 }
1775                                 break;
1776                 }
1777         }
1778 }
1779
1780 void linphone_call_background_tasks(LinphoneCall *call, bool_t one_second_elapsed){
1781         LinphoneCore* lc = call->core;
1782         int disconnect_timeout = linphone_core_get_nortp_timeout(call->core);
1783         bool_t disconnected=FALSE;
1784
1785         if (call->state==LinphoneCallStreamsRunning && one_second_elapsed){
1786                 RtpSession *as=NULL,*vs=NULL;
1787                 float audio_load=0, video_load=0;
1788                 if (call->audiostream!=NULL){
1789                         as=call->audiostream->session;
1790                         if (call->audiostream->ticker)
1791                                 audio_load=ms_ticker_get_average_load(call->audiostream->ticker);
1792                 }
1793                 if (call->videostream!=NULL){
1794                         if (call->videostream->ticker)
1795                                 video_load=ms_ticker_get_average_load(call->videostream->ticker);
1796                         vs=call->videostream->session;
1797                 }
1798                 display_bandwidth(as,vs);
1799                 ms_message("Thread processing load: audio=%f\tvideo=%f",audio_load,video_load);
1800         }
1801 #ifdef VIDEO_ENABLED
1802         if (call->videostream!=NULL) {
1803                 OrtpEvent *ev;
1804
1805                 /* Ensure there is no dangling ICE check list. */
1806                 if (call->ice_session == NULL) call->videostream->ice_check_list = NULL;
1807
1808                 // Beware that the application queue should not depend on treatments fron the
1809                 // mediastreamer queue.
1810                 video_stream_iterate(call->videostream);
1811
1812                 while (call->videostream_app_evq && (NULL != (ev=ortp_ev_queue_get(call->videostream_app_evq)))){
1813                         OrtpEventType evt=ortp_event_get_type(ev);
1814                         OrtpEventData *evd=ortp_event_get_data(ev);
1815                         if (evt == ORTP_EVENT_ZRTP_ENCRYPTION_CHANGED){
1816                                 linphone_call_videostream_encryption_changed(call, evd->info.zrtp_stream_encrypted);
1817                         } else if (evt == ORTP_EVENT_RTCP_PACKET_RECEIVED) {
1818                                 call->stats[LINPHONE_CALL_STATS_VIDEO].round_trip_delay = rtp_session_get_round_trip_propagation(call->videostream->session);
1819                                 if(call->stats[LINPHONE_CALL_STATS_VIDEO].received_rtcp != NULL)
1820                                         freemsg(call->stats[LINPHONE_CALL_STATS_VIDEO].received_rtcp);
1821                                 call->stats[LINPHONE_CALL_STATS_VIDEO].received_rtcp = evd->packet;
1822                                 evd->packet = NULL;
1823                                 if (lc->vtable.call_stats_updated)
1824                                         lc->vtable.call_stats_updated(lc, call, &call->stats[LINPHONE_CALL_STATS_VIDEO]);
1825                         } else if (evt == ORTP_EVENT_RTCP_PACKET_EMITTED) {
1826                                 memcpy(&call->stats[LINPHONE_CALL_STATS_VIDEO].jitter_stats, rtp_session_get_jitter_stats(call->videostream->session), sizeof(jitter_stats_t));
1827                                 if(call->stats[LINPHONE_CALL_STATS_VIDEO].sent_rtcp != NULL)
1828                                         freemsg(call->stats[LINPHONE_CALL_STATS_VIDEO].sent_rtcp);
1829                                 call->stats[LINPHONE_CALL_STATS_VIDEO].sent_rtcp = evd->packet;
1830                                 evd->packet = NULL;
1831                                 if (lc->vtable.call_stats_updated)
1832                                         lc->vtable.call_stats_updated(lc, call, &call->stats[LINPHONE_CALL_STATS_VIDEO]);
1833                         } else if ((evt == ORTP_EVENT_ICE_SESSION_PROCESSING_FINISHED) || (evt == ORTP_EVENT_ICE_GATHERING_FINISHED)) {
1834                                 handle_ice_events(call, ev);
1835                         }
1836                         ortp_event_destroy(ev);
1837                 }
1838         }
1839 #endif
1840         if (call->audiostream!=NULL) {
1841                 OrtpEvent *ev;
1842
1843                 /* Ensure there is no dangling ICE check list. */
1844                 if (call->ice_session == NULL) call->audiostream->ice_check_list = NULL;
1845
1846                 // Beware that the application queue should not depend on treatments fron the
1847                 // mediastreamer queue.
1848                 audio_stream_iterate(call->audiostream);
1849
1850                 while (call->audiostream_app_evq && (NULL != (ev=ortp_ev_queue_get(call->audiostream_app_evq)))){
1851                         OrtpEventType evt=ortp_event_get_type(ev);
1852                         OrtpEventData *evd=ortp_event_get_data(ev);
1853                         if (evt == ORTP_EVENT_ZRTP_ENCRYPTION_CHANGED){
1854                                 linphone_call_audiostream_encryption_changed(call, evd->info.zrtp_stream_encrypted);
1855                         } else if (evt == ORTP_EVENT_ZRTP_SAS_READY) {
1856                                 linphone_call_audiostream_auth_token_ready(call, evd->info.zrtp_sas.sas, evd->info.zrtp_sas.verified);
1857                         } else if (evt == ORTP_EVENT_RTCP_PACKET_RECEIVED) {
1858                                 call->stats[LINPHONE_CALL_STATS_AUDIO].round_trip_delay = rtp_session_get_round_trip_propagation(call->audiostream->session);
1859                                 if(call->stats[LINPHONE_CALL_STATS_AUDIO].received_rtcp != NULL)
1860                                         freemsg(call->stats[LINPHONE_CALL_STATS_AUDIO].received_rtcp);
1861                                 call->stats[LINPHONE_CALL_STATS_AUDIO].received_rtcp = evd->packet;
1862                                 evd->packet = NULL;
1863                                 if (lc->vtable.call_stats_updated)
1864                                         lc->vtable.call_stats_updated(lc, call, &call->stats[LINPHONE_CALL_STATS_AUDIO]);
1865                         } else if (evt == ORTP_EVENT_RTCP_PACKET_EMITTED) {
1866                                 memcpy(&call->stats[LINPHONE_CALL_STATS_AUDIO].jitter_stats, rtp_session_get_jitter_stats(call->audiostream->session), sizeof(jitter_stats_t));
1867                                 if(call->stats[LINPHONE_CALL_STATS_AUDIO].sent_rtcp != NULL)
1868                                         freemsg(call->stats[LINPHONE_CALL_STATS_AUDIO].sent_rtcp);
1869                                 call->stats[LINPHONE_CALL_STATS_AUDIO].sent_rtcp = evd->packet;
1870                                 evd->packet = NULL;
1871                                 if (lc->vtable.call_stats_updated)
1872                                         lc->vtable.call_stats_updated(lc, call, &call->stats[LINPHONE_CALL_STATS_AUDIO]);
1873                         } else if ((evt == ORTP_EVENT_ICE_SESSION_PROCESSING_FINISHED) || (evt == ORTP_EVENT_ICE_GATHERING_FINISHED)) {
1874                                 handle_ice_events(call, ev);
1875                         }
1876                         ortp_event_destroy(ev);
1877                 }
1878         }
1879         if (call->state==LinphoneCallStreamsRunning && one_second_elapsed && call->audiostream!=NULL && disconnect_timeout>0 )
1880                 disconnected=!audio_stream_alive(call->audiostream,disconnect_timeout);
1881         if (disconnected)
1882                 linphone_core_disconnected(call->core,call);
1883 }
1884
1885 void linphone_call_log_completed(LinphoneCall *call){
1886         LinphoneCore *lc=call->core;
1887
1888         call->log->duration=time(NULL)-call->start_time;
1889
1890         if (call->log->status==LinphoneCallMissed){
1891                 char *info;
1892                 lc->missed_calls++;
1893                 info=ortp_strdup_printf(ngettext("You have missed %i call.",
1894                                          "You have missed %i calls.", lc->missed_calls),
1895                                 lc->missed_calls);
1896         if (lc->vtable.display_status!=NULL)
1897             lc->vtable.display_status(lc,info);
1898                 ms_free(info);
1899         }
1900         lc->call_logs=ms_list_prepend(lc->call_logs,(void *)call->log);
1901         if (ms_list_size(lc->call_logs)>lc->max_call_logs){
1902                 MSList *elem,*prevelem=NULL;
1903                 /*find the last element*/
1904                 for(elem=lc->call_logs;elem!=NULL;elem=elem->next){
1905                         prevelem=elem;
1906                 }
1907                 elem=prevelem;
1908                 linphone_call_log_destroy((LinphoneCallLog*)elem->data);
1909                 lc->call_logs=ms_list_remove_link(lc->call_logs,elem);
1910         }
1911         if (lc->vtable.call_log_updated!=NULL){
1912                 lc->vtable.call_log_updated(lc,call->log);
1913         }
1914         call_logs_write_to_config_file(lc);
1915 }
1916
1917 LinphoneCallState linphone_call_get_transfer_state(LinphoneCall *call) {
1918         return call->transfer_state;
1919 }
1920
1921 void linphone_call_set_transfer_state(LinphoneCall* call, LinphoneCallState state) {
1922         if (state != call->transfer_state) {
1923                 LinphoneCore* lc = call->core;
1924                 call->transfer_state = state;
1925                 if (lc->vtable.transfer_state_changed)
1926                         lc->vtable.transfer_state_changed(lc, call, state);
1927         }
1928 }
1929