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
  30
  31 #include "mediastreamer2/mediastream.h"
  32 #include "mediastreamer2/msvolume.h"
  33 #include "mediastreamer2/msequalizer.h"
  34 #include "mediastreamer2/msfileplayer.h"
  35 #include "mediastreamer2/msjpegwriter.h"
  36 #include "mediastreamer2/mseventqueue.h"
  37
  38 #ifdef VIDEO_ENABLED
  39 static MSWebCam *get_nowebcam_device(){
  40         return ms_web_cam_manager_get_cam(ms_web_cam_manager_get(),"StaticImage: Static picture");
  41 }
  42 #endif
  43
  44 LinphoneCore *linphone_call_get_core(const LinphoneCall *call){
  45         return call->core;
  46 }
  47
  48 static const char* get_hexa_zrtp_identifier(LinphoneCore *lc){
  49         const char *confZid=lp_config_get_string(lc->config,"rtp","zid",NULL);
  50         if (confZid != NULL) {
  51                 return confZid;
  52         } else {
  53         char zidstr[128];
  54         snprintf(zidstr,sizeof(zidstr),"%x-%x-%x",rand(),rand(),rand());
  55                 lp_config_set_string(lc->config,"rtp","zid",zidstr);
  56                 return lp_config_get_string(lc->config,"rtp","zid",NULL);
  57         }
  58 }
  59
  60 const char* linphone_call_get_authentication_token(LinphoneCall *call){
  61         return call->auth_token;
  62 }
  63
  64 bool_t linphone_call_get_authentication_token_verified(LinphoneCall *call){
  65         return call->auth_token_verified;
  66 }
  67 bool_t linphone_call_are_all_streams_encrypted(LinphoneCall *call) {
  68         // Check ZRTP encryption in audiostream
  69         if (!call->audiostream_encrypted) {
  70                 return FALSE;
  71         }
  72
  73 #ifdef VIDEO_ENABLED
  74         // If video enabled, check ZRTP encryption in videostream
  75         const LinphoneCallParams *params=linphone_call_get_current_params(call);
  76         if (params->has_video && !call->videostream_encrypted) {
  77                 return FALSE;
  78         }
  79 #endif
  80
  81         return TRUE;
  82 }
  83
  84 void propagate_encryption_changed(LinphoneCall *call){
  85         if (call->core->vtable.call_encryption_changed == NULL) return;
  86
  87         if (!linphone_call_are_all_streams_encrypted(call)) {
  88                 ms_message("Some streams are not encrypted");
  89                 call->core->vtable.call_encryption_changed(call->core, call, FALSE, call->auth_token);
  90         } else {
  91                 ms_message("All streams are encrypted");
  92                 call->core->vtable.call_encryption_changed(call->core, call, TRUE, call->auth_token);
  93         }
  94 }
  95
  96 #ifdef VIDEO_ENABLED
  97 static void linphone_call_videostream_encryption_changed(void *data, bool_t encrypted){
  98         ms_message("Video stream is %s", encrypted ? "encrypted" : "not encrypted");
  99
 100         LinphoneCall *call = (LinphoneCall *)data;
 101         call->videostream_encrypted=encrypted;
 102         propagate_encryption_changed(call);
 103 }
 104 #endif
 105
 106 static void linphone_call_audiostream_encryption_changed(void *data, bool_t encrypted) {
 107         char status[255]={0};
 108         ms_message("Audio stream is %s ", encrypted ? "encrypted" : "not encrypted");
 109
 110         LinphoneCall *call = (LinphoneCall *)data;
 111         call->audiostream_encrypted=encrypted;
 112
 113         if (encrypted && call->core->vtable.display_status != NULL) {
 114                 snprintf(status,sizeof(status)-1,_("Authentication token is %s"),call->auth_token);
 115                  call->core->vtable.display_status(call->core, status);
 116         }
 117
 118         propagate_encryption_changed(call);
 119
 120
 121 #ifdef VIDEO_ENABLED
 122         // Enable video encryption
 123         const LinphoneCallParams *params=linphone_call_get_current_params(call);
 124         if (params->has_video) {
 125                 ms_message("Trying to enable encryption on video stream");
 126                 OrtpZrtpParams params;
 127                 params.zid=get_hexa_zrtp_identifier(call->core);
 128                 params.zid_file=NULL; //unused
 129                 video_stream_enable_zrtp(call->videostream,call->audiostream,&params);
 130         }
 131 #endif
 132 }
 133
 134
 135 static void linphone_call_audiostream_auth_token_ready(void *data, const char* auth_token, bool_t verified) {
 136         LinphoneCall *call=(LinphoneCall *)data;
 137         if (call->auth_token != NULL)
 138                 ms_free(call->auth_token);
 139
 140         call->auth_token=ms_strdup(auth_token);
 141         call->auth_token_verified=verified;
 142
 143         ms_message("Authentication token is %s (%s)", auth_token, verified?"verified":"unverified");
 144 }
 145
 146
 147 static MSList *make_codec_list(LinphoneCore *lc, const MSList *codecs, int bandwidth_limit){
 148         MSList *l=NULL;
 149         const MSList *it;
 150         for(it=codecs;it!=NULL;it=it->next){
 151                 PayloadType *pt=(PayloadType*)it->data;
 152                 if (pt->flags & PAYLOAD_TYPE_ENABLED){
 153                         if (bandwidth_limit>0 && !linphone_core_is_payload_type_usable_for_bandwidth(lc,pt,bandwidth_limit)){
 154                                 ms_message("Codec %s/%i eliminated because of audio bandwidth constraint.",pt->mime_type,pt->clock_rate);
 155                                 continue;
 156                         }
 157                         if (linphone_core_check_payload_type_usability(lc,pt)){
 158                                 l=ms_list_append(l,payload_type_clone(pt));
 159                         }
 160                 }
 161         }
 162         return l;
 163 }
 164
 165 static SalMediaDescription *_create_local_media_description(LinphoneCore *lc, LinphoneCall *call, unsigned int session_id, unsigned int session_ver){
 166         MSList *l;
 167         PayloadType *pt;
 168         const char *me=linphone_core_get_identity(lc);
 169         LinphoneAddress *addr=linphone_address_new(me);
 170         const char *username=linphone_address_get_username (addr);
 171         SalMediaDescription *md=sal_media_description_new();
 172
 173         md->session_id=session_id;
 174         md->session_ver=session_ver;
 175         md->nstreams=1;
 176         strncpy(md->addr,call->localip,sizeof(md->addr));
 177         strncpy(md->username,username,sizeof(md->username));
 178         md->bandwidth=linphone_core_get_download_bandwidth(lc);
 179
 180         /*set audio capabilities */
 181         strncpy(md->streams[0].addr,call->localip,sizeof(md->streams[0].addr));
 182         md->streams[0].port=call->audio_port;
 183         md->streams[0].proto=SalProtoRtpAvp;
 184         md->streams[0].type=SalAudio;
 185         md->streams[0].ptime=lc->net_conf.down_ptime;
 186         l=make_codec_list(lc,lc->codecs_conf.audio_codecs,call->params.audio_bw);
 187         pt=payload_type_clone(rtp_profile_get_payload_from_mime(&av_profile,"telephone-event"));
 188         l=ms_list_append(l,pt);
 189         md->streams[0].payloads=l;
 190
 191
 192         if (call->params.has_video){
 193                 md->nstreams++;
 194                 md->streams[1].port=call->video_port;
 195                 md->streams[1].proto=SalProtoRtpAvp;
 196                 md->streams[1].type=SalVideo;
 197                 l=make_codec_list(lc,lc->codecs_conf.video_codecs,0);
 198                 md->streams[1].payloads=l;
 199         }
 200         linphone_address_destroy(addr);
 201         return md;
 202 }
 203
 204 void update_local_media_description(LinphoneCore *lc, LinphoneCall *call, SalMediaDescription **md){
 205         if (*md == NULL) {
 206                 *md = _create_local_media_description(lc,call,0,0);
 207         } else {
 208                 unsigned int id = (*md)->session_id;
 209                 unsigned int ver = (*md)->session_ver+1;
 210                 sal_media_description_unref(*md);
 211                 *md = _create_local_media_description(lc,call,id,ver);
 212         }
 213 }
 214
 215 SalMediaDescription *create_local_media_description(LinphoneCore *lc, LinphoneCall *call){
 216         unsigned int id=rand() & 0xfff;
 217         return _create_local_media_description(lc,call,id,id);
 218 }
 219
 220 static int find_port_offset(LinphoneCore *lc){
 221         int offset;
 222         MSList *elem;
 223         int audio_port;
 224         bool_t already_used=FALSE;
 225         for(offset=0;offset<100;offset+=2){
 226                 audio_port=linphone_core_get_audio_port (lc)+offset;
 227                 already_used=FALSE;
 228                 for(elem=lc->calls;elem!=NULL;elem=elem->next){
 229                         LinphoneCall *call=(LinphoneCall*)elem->data;
 230                         if (call->audio_port==audio_port) {
 231                                 already_used=TRUE;
 232                                 break;
 233                         }
 234                 }
 235                 if (!already_used) break;
 236         }
 237         if (offset==100){
 238                 ms_error("Could not find any free port !");
 239                 return -1;
 240         }
 241         return offset;
 242 }
 243
 244 static void linphone_call_init_common(LinphoneCall *call, LinphoneAddress *from, LinphoneAddress *to){
 245         int port_offset;
 246         call->refcnt=1;
 247         call->state=LinphoneCallIdle;
 248         call->start_time=time(NULL);
 249         call->media_start_time=0;
 250         call->log=linphone_call_log_new(call, from, to);
 251         call->owns_call_log=TRUE;
 252         linphone_core_notify_all_friends(call->core,LinphoneStatusOnThePhone);
 253         port_offset=find_port_offset (call->core);
 254         if (port_offset==-1) return;
 255         call->audio_port=linphone_core_get_audio_port(call->core)+port_offset;
 256         call->video_port=linphone_core_get_video_port(call->core)+port_offset;
 257
 258 }
 259
 260 static void discover_mtu(LinphoneCore *lc, const char *remote){
 261         int mtu;
 262         if (lc->net_conf.mtu==0 ){
 263                 /*attempt to discover mtu*/
 264                 mtu=ms_discover_mtu(remote);
 265                 if (mtu>0){
 266                         ms_set_mtu(mtu);
 267                         ms_message("Discovered mtu is %i, RTP payload max size is %i",
 268                                 mtu, ms_get_payload_max_size());
 269                 }
 270         }
 271 }
 272
 273 LinphoneCall * linphone_call_new_outgoing(struct _LinphoneCore *lc, LinphoneAddress *from, LinphoneAddress *to, const LinphoneCallParams *params)
 274 {
 275         LinphoneCall *call=ms_new0(LinphoneCall,1);
 276         call->dir=LinphoneCallOutgoing;
 277         call->op=sal_op_new(lc->sal);
 278         sal_op_set_user_pointer(call->op,call);
 279         call->core=lc;
 280         linphone_core_get_local_ip(lc,linphone_address_get_domain(to),call->localip);
 281         linphone_call_init_common(call,from,to);
 282         call->params=*params;
 283         call->localdesc=create_local_media_description (lc,call);
 284         call->camera_active=params->has_video;
 285         if (linphone_core_get_firewall_policy(call->core)==LinphonePolicyUseStun)
 286                 linphone_core_run_stun_tests(call->core,call);
 287         discover_mtu(lc,linphone_address_get_domain (to));
 288         if (params->referer){
 289                 sal_call_set_referer (call->op,params->referer->op);
 290         }
 291         return call;
 292 }
 293
 294 LinphoneCall * linphone_call_new_incoming(LinphoneCore *lc, LinphoneAddress *from, LinphoneAddress *to, SalOp *op){
 295         LinphoneCall *call=ms_new0(LinphoneCall,1);
 296         char *from_str;
 297
 298         call->dir=LinphoneCallIncoming;
 299         sal_op_set_user_pointer(op,call);
 300         call->op=op;
 301         call->core=lc;
 302
 303         if (lc->sip_conf.ping_with_options){
 304                 /*the following sends an option request back to the caller so that
 305                  we get a chance to discover our nat'd address before answering.*/
 306                 call->ping_op=sal_op_new(lc->sal);
 307                 from_str=linphone_address_as_string(from);
 308                 sal_op_set_route(call->ping_op,sal_op_get_network_origin(call->op));
 309                 sal_op_set_user_pointer(call->ping_op,call);
 310                 sal_ping(call->ping_op,linphone_core_find_best_identity(lc,from,NULL),from_str);
 311                 ms_free(from_str);
 312         }
 313
 314         linphone_address_clean(from);
 315         linphone_core_get_local_ip(lc,linphone_address_get_domain(from),call->localip);
 316         linphone_call_init_common(call, from, to);
 317         call->params.has_video=linphone_core_video_enabled(lc);
 318         call->localdesc=create_local_media_description (lc,call);
 319         call->camera_active=call->params.has_video;
 320         if (linphone_core_get_firewall_policy(call->core)==LinphonePolicyUseStun)
 321                 linphone_core_run_stun_tests(call->core,call);
 322         discover_mtu(lc,linphone_address_get_domain(from));
 323         return call;
 324 }
 325
 326 /* this function is called internally to get rid of a call.
 327  It performs the following tasks:
 328  - remove the call from the internal list of calls
 329  - update the call logs accordingly
 330 */
 331
 332 static void linphone_call_set_terminated(LinphoneCall *call){
 333         LinphoneCore *lc=call->core;
 334
 335         linphone_core_update_allocated_audio_bandwidth(lc);
 336
 337         call->owns_call_log=FALSE;
 338         linphone_call_log_completed(call);
 339
 340
 341         if (call == lc->current_call){
 342                 ms_message("Resetting the current call");
 343                 lc->current_call=NULL;
 344         }
 345
 346         if (linphone_core_del_call(lc,call) != 0){
 347                 ms_error("Could not remove the call from the list !!!");
 348         }
 349
 350         if (ms_list_size(lc->calls)==0)
 351                 linphone_core_notify_all_friends(lc,lc->presence_mode);
 352
 353         linphone_core_conference_check_uninit(&lc->conf_ctx);
 354         if (call->ringing_beep){
 355                 linphone_core_stop_dtmf(lc);
 356                 call->ringing_beep=FALSE;
 357         }
 358 }
 359
 360 const char *linphone_call_state_to_string(LinphoneCallState cs){
 361         switch (cs){
 362                 case LinphoneCallIdle:
 363                         return "LinphoneCallIdle";
 364                 case LinphoneCallIncomingReceived:
 365                         return "LinphoneCallIncomingReceived";
 366                 case LinphoneCallOutgoingInit:
 367                         return "LinphoneCallOutgoingInit";
 368                 case LinphoneCallOutgoingProgress:
 369                         return "LinphoneCallOutgoingProgress";
 370                 case LinphoneCallOutgoingRinging:
 371                         return "LinphoneCallOutgoingRinging";
 372                 case LinphoneCallOutgoingEarlyMedia:
 373                         return "LinphoneCallOutgoingEarlyMedia";
 374                 case LinphoneCallConnected:
 375                         return "LinphoneCallConnected";
 376                 case LinphoneCallStreamsRunning:
 377                         return "LinphoneCallStreamsRunning";
 378                 case LinphoneCallPausing:
 379                         return "LinphoneCallPausing";
 380                 case LinphoneCallPaused:
 381                         return "LinphoneCallPaused";
 382                 case LinphoneCallResuming:
 383                         return "LinphoneCallResuming";
 384                 case LinphoneCallRefered:
 385                         return "LinphoneCallRefered";
 386                 case LinphoneCallError:
 387                         return "LinphoneCallError";
 388                 case LinphoneCallEnd:
 389                         return "LinphoneCallEnd";
 390                 case LinphoneCallPausedByRemote:
 391                         return "LinphoneCallPausedByRemote";
 392                 case LinphoneCallUpdatedByRemote:
 393                         return "LinphoneCallUpdatedByRemote";
 394                 case LinphoneCallIncomingEarlyMedia:
 395                         return "LinphoneCallIncomingEarlyMedia";
 396                 case LinphoneCallUpdated:
 397                         return "LinphoneCallUpdated";
 398                 case LinphoneCallReleased:
 399                         return "LinphoneCallReleased";
 400         }
 401         return "undefined state";
 402 }
 403
 404 void linphone_call_set_state(LinphoneCall *call, LinphoneCallState cstate, const char *message){
 405         LinphoneCore *lc=call->core;
 406
 407         if (call->state!=cstate){
 408                 if (call->state==LinphoneCallEnd || call->state==LinphoneCallError){
 409                         if (cstate!=LinphoneCallReleased){
 410                                 ms_warning("Spurious call state change from %s to %s, ignored.",linphone_call_state_to_string(call->state),
 411                            linphone_call_state_to_string(cstate));
 412                                 return;
 413                         }
 414                 }
 415                 ms_message("Call %p: moving from state %s to %s",call,linphone_call_state_to_string(call->state),
 416                            linphone_call_state_to_string(cstate));
 417                 if (cstate!=LinphoneCallRefered){
 418                         /*LinphoneCallRefered is rather an event, not a state.
 419                          Indeed it does not change the state of the call (still paused or running)*/
 420                         call->state=cstate;
 421                 }
 422                 if (cstate==LinphoneCallEnd || cstate==LinphoneCallError){
 423              if (call->reason==LinphoneReasonDeclined){
 424                  call->log->status=LinphoneCallDeclined;
 425              }
 426             linphone_call_set_terminated (call);
 427                 }
 428         if (cstate == LinphoneCallConnected) {
 429             call->log->status=LinphoneCallSuccess;
 430         }
 431
 432                 if (lc->vtable.call_state_changed)
 433                         lc->vtable.call_state_changed(lc,call,cstate,message);
 434                 if (cstate==LinphoneCallReleased){
 435                         if (call->op!=NULL) {
 436                                 /* so that we cannot have anymore upcalls for SAL
 437                                  concerning this call*/
 438                                 sal_op_release(call->op);
 439                                 call->op=NULL;
 440                         }
 441                         linphone_call_unref(call);
 442                 }
 443         }
 444 }
 445
 446 static void linphone_call_destroy(LinphoneCall *obj)
 447 {
 448         if (obj->op!=NULL) {
 449                 sal_op_release(obj->op);
 450                 obj->op=NULL;
 451         }
 452         if (obj->resultdesc!=NULL) {
 453                 sal_media_description_unref(obj->resultdesc);
 454                 obj->resultdesc=NULL;
 455         }
 456         if (obj->localdesc!=NULL) {
 457                 sal_media_description_unref(obj->localdesc);
 458                 obj->localdesc=NULL;
 459         }
 460         if (obj->ping_op) {
 461                 sal_op_release(obj->ping_op);
 462         }
 463         if (obj->refer_to){
 464                 ms_free(obj->refer_to);
 465         }
 466         if (obj->owns_call_log)
 467                 linphone_call_log_destroy(obj->log);
 468         if (obj->auth_token) {
 469                 ms_free(obj->auth_token);
 470         }
 471
 472         ms_free(obj);
 473 }
 474
 475 /**
 476  * @addtogroup call_control
 477  * @{
 478 **/
 479
 480 /**
 481  * Increments the call 's reference count.
 482  * An application that wishes to retain a pointer to call object
 483  * must use this function to unsure the pointer remains
 484  * valid. Once the application no more needs this pointer,
 485  * it must call linphone_call_unref().
 486 **/
 487 LinphoneCall * linphone_call_ref(LinphoneCall *obj){
 488         obj->refcnt++;
 489         return obj;
 490 }
 491
 492 /**
 493  * Decrements the call object reference count.
 494  * See linphone_call_ref().
 495 **/
 496 void linphone_call_unref(LinphoneCall *obj){
 497         obj->refcnt--;
 498         if (obj->refcnt==0){
 499                 linphone_call_destroy(obj);
 500         }
 501 }
 502
 503 /**
 504  * Returns current parameters associated to the call.
 505 **/
 506 const LinphoneCallParams * linphone_call_get_current_params(const LinphoneCall *call){
 507         return &call->current_params;
 508 }
 509
 510 /**
 511  * Returns the remote address associated to this call
 512  *
 513 **/
 514 const LinphoneAddress * linphone_call_get_remote_address(const LinphoneCall *call){
 515         return call->dir==LinphoneCallIncoming ? call->log->from : call->log->to;
 516 }
 517
 518 /**
 519  * Returns the remote address associated to this call as a string.
 520  *
 521  * The result string must be freed by user using ms_free().
 522 **/
 523 char *linphone_call_get_remote_address_as_string(const LinphoneCall *call){
 524         return linphone_address_as_string(linphone_call_get_remote_address(call));
 525 }
 526
 527 /**
 528  * Retrieves the call's current state.
 529 **/
 530 LinphoneCallState linphone_call_get_state(const LinphoneCall *call){
 531         return call->state;
 532 }
 533
 534 /**
 535  * Returns the reason for a call termination (either error or normal termination)
 536 **/
 537 LinphoneReason linphone_call_get_reason(const LinphoneCall *call){
 538         return call->reason;
 539 }
 540
 541 /**
 542  * Get the user_pointer in the LinphoneCall
 543  *
 544  * @ingroup call_control
 545  *
 546  * return user_pointer an opaque user pointer that can be retrieved at any time
 547 **/
 548 void *linphone_call_get_user_pointer(LinphoneCall *call)
 549 {
 550         return call->user_pointer;
 551 }
 552
 553 /**
 554  * Set the user_pointer in the LinphoneCall
 555  *
 556  * @ingroup call_control
 557  *
 558  * the user_pointer is an opaque user pointer that can be retrieved at any time in the LinphoneCall
 559 **/
 560 void linphone_call_set_user_pointer(LinphoneCall *call, void *user_pointer)
 561 {
 562         call->user_pointer = user_pointer;
 563 }
 564
 565 /**
 566  * Returns the call log associated to this call.
 567 **/
 568 LinphoneCallLog *linphone_call_get_call_log(const LinphoneCall *call){
 569         return call->log;
 570 }
 571
 572 /**
 573  * Returns the refer-to uri (if the call was transfered).
 574 **/
 575 const char *linphone_call_get_refer_to(const LinphoneCall *call){
 576         return call->refer_to;
 577 }
 578
 579 /**
 580  * Returns direction of the call (incoming or outgoing).
 581 **/
 582 LinphoneCallDir linphone_call_get_dir(const LinphoneCall *call){
 583         return call->log->dir;
 584 }
 585
 586 /**
 587  * Returns the far end's user agent description string, if available.
 588 **/
 589 const char *linphone_call_get_remote_user_agent(LinphoneCall *call){
 590         if (call->op){
 591                 return sal_op_get_remote_ua (call->op);
 592         }
 593         return NULL;
 594 }
 595
 596 /**
 597  * Returns true if this calls has received a transfer that has not been
 598  * executed yet.
 599  * Pending transfers are executed when this call is being paused or closed,
 600  * locally or by remote endpoint.
 601  * If the call is already paused while receiving the transfer request, the
 602  * transfer immediately occurs.
 603 **/
 604 bool_t linphone_call_has_transfer_pending(const LinphoneCall *call){
 605         return call->refer_pending;
 606 }
 607
 608 /**
 609  * Returns call's duration in seconds.
 610 **/
 611 int linphone_call_get_duration(const LinphoneCall *call){
 612         if (call->media_start_time==0) return 0;
 613         return time(NULL)-call->media_start_time;
 614 }
 615
 616 /**
 617  * Returns the call object this call is replacing, if any.
 618  * Call replacement can occur during call transfers.
 619  * By default, the core automatically terminates the replaced call and accept the new one.
 620  * This function allows the application to know whether a new incoming call is a one that replaces another one.
 621 **/
 622 LinphoneCall *linphone_call_get_replaced_call(LinphoneCall *call){
 623         SalOp *op=sal_call_get_replaces(call->op);
 624         if (op){
 625                 return (LinphoneCall*)sal_op_get_user_pointer(op);
 626         }
 627         return NULL;
 628 }
 629
 630 /**
 631  * Indicate whether camera input should be sent to remote end.
 632 **/
 633 void linphone_call_enable_camera (LinphoneCall *call, bool_t enable){
 634 #ifdef VIDEO_ENABLED
 635         if (call->videostream!=NULL && call->videostream->ticker!=NULL){
 636                 LinphoneCore *lc=call->core;
 637                 MSWebCam *nowebcam=get_nowebcam_device();
 638                 if (call->camera_active!=enable && lc->video_conf.device!=nowebcam){
 639                         video_stream_change_camera(call->videostream,
 640                                      enable ? lc->video_conf.device : nowebcam);
 641                 }
 642         }
 643         call->camera_active=enable;
 644 #endif
 645 }
 646
 647 /**
 648  * Take a photo of currently received video and write it into a jpeg file.
 649 **/
 650 int linphone_call_take_video_snapshot(LinphoneCall *call, const char *file){
 651 #ifdef VIDEO_ENABLED
 652         if (call->videostream!=NULL && call->videostream->jpegwriter!=NULL){
 653                 return ms_filter_call_method(call->videostream->jpegwriter,MS_JPEG_WRITER_TAKE_SNAPSHOT,(void*)file);
 654         }
 655         ms_warning("Cannot take snapshot: no currently running video stream on this call.");
 656         return -1;
 657 #endif
 658         return -1;
 659 }
 660
 661 /**
 662  * Returns TRUE if camera pictures are sent to the remote party.
 663 **/
 664 bool_t linphone_call_camera_enabled (const LinphoneCall *call){
 665         return call->camera_active;
 666 }
 667
 668 /**
 669  * Enable video stream.
 670 **/
 671 void linphone_call_params_enable_video(LinphoneCallParams *cp, bool_t enabled){
 672         cp->has_video=enabled;
 673 }
 674
 675 /**
 676  * Returns whether video is enabled.
 677 **/
 678 bool_t linphone_call_params_video_enabled(const LinphoneCallParams *cp){
 679         return cp->has_video;
 680 }
 681
 682 /**
 683  * Enable sending of real early media (during outgoing calls).
 684 **/
 685 void linphone_call_params_enable_early_media_sending(LinphoneCallParams *cp, bool_t enabled){
 686         cp->real_early_media=enabled;
 687 }
 688
 689 bool_t linphone_call_params_early_media_sending_enabled(const LinphoneCallParams *cp){
 690         return cp->real_early_media;
 691 }
 692
 693 /**
 694  * Returns true if the call is part of the locally managed conference.
 695 **/
 696 bool_t linphone_call_params_local_conference_mode(const LinphoneCallParams *cp){
 697         return cp->in_conference;
 698 }
 699
 700 /**
 701  * Refine bandwidth settings for this call by setting a bandwidth limit for audio streams.
 702  * As a consequence, codecs whose bitrates are not compatible with this limit won't be used.
 703 **/
 704 void linphone_call_params_set_audio_bandwidth_limit(LinphoneCallParams *cp, int bandwidth){
 705         cp->audio_bw=bandwidth;
 706 }
 707
 708 #ifdef VIDEO_ENABLED
 709 /**
 710  * Request remote side to send us a Video Fast Update.
 711 **/
 712 void linphone_call_send_vfu_request(LinphoneCall *call)
 713 {
 714         if (LinphoneCallStreamsRunning == linphone_call_get_state(call))
 715                 sal_call_send_vfu_request(call->op);
 716 }
 717 #endif
 718
 719 /**
 720  *
 721 **/
 722 LinphoneCallParams * linphone_call_params_copy(const LinphoneCallParams *cp){
 723         LinphoneCallParams *ncp=ms_new0(LinphoneCallParams,1);
 724         memcpy(ncp,cp,sizeof(LinphoneCallParams));
 725         return ncp;
 726 }
 727
 728 /**
 729  *
 730 **/
 731 void linphone_call_params_destroy(LinphoneCallParams *p){
 732         ms_free(p);
 733 }
 734
 735 /**
 736  * @}
 737 **/
 738
 739
 740 #ifdef TEST_EXT_RENDERER
 741 static void rendercb(void *data, const MSPicture *local, const MSPicture *remote){
 742         ms_message("rendercb, local buffer=%p, remote buffer=%p",
 743                    local ? local->planes[0] : NULL, remote? remote->planes[0] : NULL);
 744 }
 745 #endif
 746
 747 #ifdef VIDEO_ENABLED
 748 static void video_stream_event_cb(void *user_pointer, const MSFilter *f, const unsigned int event_id, const void *args){
 749         ms_warning("In linphonecall.c: video_stream_event_cb");
 750         switch (event_id) {
 751                 case MS_VIDEO_DECODER_DECODING_ERRORS:
 752                         ms_warning("Case is MS_VIDEO_DECODER_DECODING_ERRORS");
 753                         linphone_call_send_vfu_request((LinphoneCall*) user_pointer);
 754                         break;
 755                 default:
 756                         ms_warning("Unhandled event %i", event_id);
 757                         break;
 758         }
 759 }
 760 #endif
 761
 762 void linphone_call_init_media_streams(LinphoneCall *call){
 763         LinphoneCore *lc=call->core;
 764         SalMediaDescription *md=call->localdesc;
 765         AudioStream *audiostream;
 766
 767         call->audiostream=audiostream=audio_stream_new(md->streams[0].port,linphone_core_ipv6_enabled(lc));
 768         if (linphone_core_echo_limiter_enabled(lc)){
 769                 const char *type=lp_config_get_string(lc->config,"sound","el_type","mic");
 770                 if (strcasecmp(type,"mic")==0)
 771                         audio_stream_enable_echo_limiter(audiostream,ELControlMic);
 772                 else if (strcasecmp(type,"full")==0)
 773                         audio_stream_enable_echo_limiter(audiostream,ELControlFull);
 774         }
 775         audio_stream_enable_gain_control(audiostream,TRUE);
 776         if (linphone_core_echo_cancellation_enabled(lc)){
 777                 int len,delay,framesize;
 778                 const char *statestr=lp_config_get_string(lc->config,"sound","ec_state",NULL);
 779                 len=lp_config_get_int(lc->config,"sound","ec_tail_len",0);
 780                 delay=lp_config_get_int(lc->config,"sound","ec_delay",0);
 781                 framesize=lp_config_get_int(lc->config,"sound","ec_framesize",0);
 782                 audio_stream_set_echo_canceller_params(audiostream,len,delay,framesize);
 783                 if (statestr && audiostream->ec){
 784                         ms_filter_call_method(audiostream->ec,MS_ECHO_CANCELLER_SET_STATE_STRING,(void*)statestr);
 785                 }
 786         }
 787         audio_stream_enable_automatic_gain_control(audiostream,linphone_core_agc_enabled(lc));
 788         {
 789                 int enabled=lp_config_get_int(lc->config,"sound","noisegate",0);
 790                 audio_stream_enable_noise_gate(audiostream,enabled);
 791         }
 792
 793         if (lc->a_rtp)
 794                 rtp_session_set_transports(audiostream->session,lc->a_rtp,lc->a_rtcp);
 795
 796         call->audiostream_app_evq = ortp_ev_queue_new();
 797         rtp_session_register_event_queue(audiostream->session,call->audiostream_app_evq);
 798
 799 #ifdef VIDEO_ENABLED
 800
 801         if ((lc->video_conf.display || lc->video_conf.capture) && md->streams[1].port>0){
 802                 call->videostream=video_stream_new(md->streams[1].port,linphone_core_ipv6_enabled(lc));
 803         if( lc->video_conf.displaytype != NULL)
 804                 video_stream_set_display_filter_name(call->videostream,lc->video_conf.displaytype);
 805         video_stream_set_event_callback(call->videostream,video_stream_event_cb, call);
 806         if (lc->v_rtp)
 807                 rtp_session_set_transports(call->videostream->session,lc->v_rtp,lc->v_rtcp);
 808         call->videostream_app_evq = ortp_ev_queue_new();
 809         rtp_session_register_event_queue(call->videostream->session,call->videostream_app_evq);
 810 #ifdef TEST_EXT_RENDERER
 811                 video_stream_set_render_callback(call->videostream,rendercb,NULL);
 812 #endif
 813         }
 814 #else
 815         call->videostream=NULL;
 816 #endif
 817 }
 818
 819
 820 static int dtmf_tab[16]={'0','1','2','3','4','5','6','7','8','9','*','#','A','B','C','D'};
 821
 822 static void linphone_core_dtmf_received(RtpSession* s, int dtmf, void* user_data){
 823         LinphoneCore* lc = (LinphoneCore*)user_data;
 824         if (dtmf<0 || dtmf>15){
 825                 ms_warning("Bad dtmf value %i",dtmf);
 826                 return;
 827         }
 828         if (lc->vtable.dtmf_received != NULL)
 829                 lc->vtable.dtmf_received(lc, linphone_core_get_current_call(lc), dtmf_tab[dtmf]);
 830 }
 831
 832 static void parametrize_equalizer(LinphoneCore *lc, AudioStream *st){
 833         if (st->equalizer){
 834                 MSFilter *f=st->equalizer;
 835                 int enabled=lp_config_get_int(lc->config,"sound","eq_active",0);
 836                 const char *gains=lp_config_get_string(lc->config,"sound","eq_gains",NULL);
 837                 ms_filter_call_method(f,MS_EQUALIZER_SET_ACTIVE,&enabled);
 838                 if (enabled){
 839                         if (gains){
 840                                 do{
 841                                         int bytes;
 842                                         MSEqualizerGain g;
 843                                         if (sscanf(gains,"%f:%f:%f %n",&g.frequency,&g.gain,&g.width,&bytes)==3){
 844                                                 ms_message("Read equalizer gains: %f(~%f) --> %f",g.frequency,g.width,g.gain);
 845                                                 ms_filter_call_method(f,MS_EQUALIZER_SET_GAIN,&g);
 846                                                 gains+=bytes;
 847                                         }else break;
 848                                 }while(1);
 849                         }
 850                 }
 851         }
 852 }
 853
 854 void _post_configure_audio_stream(AudioStream *st, LinphoneCore *lc, bool_t muted){
 855         float mic_gain=lp_config_get_float(lc->config,"sound","mic_gain",1);
 856         float thres = 0;
 857         float recv_gain;
 858         float ng_thres=lp_config_get_float(lc->config,"sound","ng_thres",0.05);
 859         float ng_floorgain=lp_config_get_float(lc->config,"sound","ng_floorgain",0);
 860         int dc_removal=lp_config_get_int(lc->config,"sound","dc_removal",0);
 861
 862         if (!muted)
 863                 audio_stream_set_mic_gain(st,mic_gain);
 864         else
 865                 audio_stream_set_mic_gain(st,0);
 866
 867         recv_gain = lc->sound_conf.soft_play_lev;
 868         if (recv_gain != 0) {
 869                 linphone_core_set_playback_gain_db (lc,recv_gain);
 870         }
 871         if (st->volsend){
 872                 ms_filter_call_method(st->volsend,MS_VOLUME_REMOVE_DC,&dc_removal);
 873                 float speed=lp_config_get_float(lc->config,"sound","el_speed",-1);
 874                 thres=lp_config_get_float(lc->config,"sound","el_thres",-1);
 875                 float force=lp_config_get_float(lc->config,"sound","el_force",-1);
 876                 int sustain=lp_config_get_int(lc->config,"sound","el_sustain",-1);
 877                 float transmit_thres=lp_config_get_float(lc->config,"sound","el_transmit_thres",-1);
 878                 MSFilter *f=NULL;
 879                 f=st->volsend;
 880                 if (speed==-1) speed=0.03;
 881                 if (force==-1) force=25;
 882                 ms_filter_call_method(f,MS_VOLUME_SET_EA_SPEED,&speed);
 883                 ms_filter_call_method(f,MS_VOLUME_SET_EA_FORCE,&force);
 884                 if (thres!=-1)
 885                         ms_filter_call_method(f,MS_VOLUME_SET_EA_THRESHOLD,&thres);
 886                 if (sustain!=-1)
 887                         ms_filter_call_method(f,MS_VOLUME_SET_EA_SUSTAIN,&sustain);
 888                 if (transmit_thres!=-1)
 889                                 ms_filter_call_method(f,MS_VOLUME_SET_EA_TRANSMIT_THRESHOLD,&transmit_thres);
 890
 891                 ms_filter_call_method(st->volsend,MS_VOLUME_SET_NOISE_GATE_THRESHOLD,&ng_thres);
 892                 ms_filter_call_method(st->volsend,MS_VOLUME_SET_NOISE_GATE_FLOORGAIN,&ng_floorgain);
 893         }
 894         if (st->volrecv){
 895                 /* parameters for a limited noise-gate effect, using echo limiter threshold */
 896                 float floorgain = 1/mic_gain;
 897                 ms_filter_call_method(st->volrecv,MS_VOLUME_SET_NOISE_GATE_THRESHOLD,&thres);
 898                 ms_filter_call_method(st->volrecv,MS_VOLUME_SET_NOISE_GATE_FLOORGAIN,&floorgain);
 899         }
 900         parametrize_equalizer(lc,st);
 901 }
 902
 903 static void post_configure_audio_streams(LinphoneCall*call){
 904         AudioStream *st=call->audiostream;
 905         LinphoneCore *lc=call->core;
 906         _post_configure_audio_stream(st,lc,call->audio_muted);
 907         if (lc->vtable.dtmf_received!=NULL){
 908                 /* replace by our default action*/
 909                 audio_stream_play_received_dtmfs(call->audiostream,FALSE);
 910                 rtp_session_signal_connect(call->audiostream->session,"telephone-event",(RtpCallback)linphone_core_dtmf_received,(unsigned long)lc);
 911         }
 912 }
 913
 914 static RtpProfile *make_profile(LinphoneCall *call, const SalMediaDescription *md, const SalStreamDescription *desc, int *used_pt){
 915         int bw;
 916         const MSList *elem;
 917         RtpProfile *prof=rtp_profile_new("Call profile");
 918         bool_t first=TRUE;
 919         int remote_bw=0;
 920         LinphoneCore *lc=call->core;
 921         int up_ptime=0;
 922         *used_pt=-1;
 923
 924         for(elem=desc->payloads;elem!=NULL;elem=elem->next){
 925                 PayloadType *pt=(PayloadType*)elem->data;
 926                 int number;
 927
 928                 if ((pt->flags & PAYLOAD_TYPE_FLAG_CAN_SEND) && first) {
 929                         if (desc->type==SalAudio){
 930                                 linphone_core_update_allocated_audio_bandwidth_in_call(call,pt);
 931                                 up_ptime=linphone_core_get_upload_ptime(lc);
 932                         }
 933                         *used_pt=payload_type_get_number(pt);
 934                         first=FALSE;
 935                 }
 936                 if (desc->bandwidth>0) remote_bw=desc->bandwidth;
 937                 else if (md->bandwidth>0) {
 938                         /*case where b=AS is given globally, not per stream*/
 939                         remote_bw=md->bandwidth;
 940                         if (desc->type==SalVideo){
 941                                 remote_bw=get_video_bandwidth(remote_bw,call->audio_bw);
 942                         }
 943                 }
 944
 945                 if (desc->type==SalAudio){
 946                                 bw=get_min_bandwidth(call->audio_bw,remote_bw);
 947                 }else bw=get_min_bandwidth(get_video_bandwidth(linphone_core_get_upload_bandwidth (lc),call->audio_bw),remote_bw);
 948                 if (bw>0) pt->normal_bitrate=bw*1000;
 949                 else if (desc->type==SalAudio){
 950                         pt->normal_bitrate=-1;
 951                 }
 952                 if (desc->ptime>0){
 953                         up_ptime=desc->ptime;
 954                 }
 955                 if (up_ptime>0){
 956                         char tmp[40];
 957                         snprintf(tmp,sizeof(tmp),"ptime=%i",up_ptime);
 958                         payload_type_append_send_fmtp(pt,tmp);
 959                 }
 960                 number=payload_type_get_number(pt);
 961                 if (rtp_profile_get_payload(prof,number)!=NULL){
 962                         ms_warning("A payload type with number %i already exists in profile !",number);
 963                 }else
 964                         rtp_profile_set_payload(prof,number,pt);
 965         }
 966         return prof;
 967 }
 968
 969
 970 static void setup_ring_player(LinphoneCore *lc, LinphoneCall *call){
 971         int pause_time=3000;
 972         audio_stream_play(call->audiostream,lc->sound_conf.ringback_tone);
 973         ms_filter_call_method(call->audiostream->soundread,MS_FILE_PLAYER_LOOP,&pause_time);
 974 }
 975
 976 #define LINPHONE_RTCP_SDES_TOOL "Linphone-" LINPHONE_VERSION
 977
 978 static bool_t linphone_call_sound_resources_available(LinphoneCall *call){
 979         LinphoneCore *lc=call->core;
 980         LinphoneCall *current=linphone_core_get_current_call(lc);
 981         return !linphone_core_is_in_conference(lc) &&
 982                 (current==NULL || current==call);
 983 }
 984
 985 static void linphone_call_start_audio_stream(LinphoneCall *call, const char *cname, bool_t muted, bool_t send_ringbacktone, bool_t use_arc){
 986         LinphoneCore *lc=call->core;
 987         int jitt_comp=lc->rtp_conf.audio_jitt_comp;
 988         int used_pt=-1;
 989         const SalStreamDescription *stream=sal_media_description_find_stream(call->resultdesc,
 990                                                 SalProtoRtpAvp,SalAudio);
 991
 992         if (stream && stream->dir!=SalStreamInactive && stream->port!=0){
 993                 MSSndCard *playcard=lc->sound_conf.lsd_card ?
 994                         lc->sound_conf.lsd_card : lc->sound_conf.play_sndcard;
 995                 MSSndCard *captcard=lc->sound_conf.capt_sndcard;
 996                 const char *playfile=lc->play_file;
 997                 const char *recfile=lc->rec_file;
 998                 call->audio_profile=make_profile(call,call->resultdesc,stream,&used_pt);
 999                 bool_t use_ec;
1000
1001                 if (used_pt!=-1){
1002                         if (playcard==NULL) {
1003                                 ms_warning("No card defined for playback !");
1004                         }
1005                         if (captcard==NULL) {
1006                                 ms_warning("No card defined for capture !");
1007                         }
1008                         /*Replace soundcard filters by inactive file players or recorders
1009                          when placed in recvonly or sendonly mode*/
1010                         if (stream->port==0 || stream->dir==SalStreamRecvOnly){
1011                                 captcard=NULL;
1012                                 playfile=NULL;
1013                         }else if (stream->dir==SalStreamSendOnly){
1014                                 playcard=NULL;
1015                                 captcard=NULL;
1016                                 recfile=NULL;
1017                                 /*And we will eventually play "playfile" if set by the user*/
1018                                 /*playfile=NULL;*/
1019                         }
1020                         if (send_ringbacktone){
1021                                 captcard=NULL;
1022                                 playfile=NULL;/* it is setup later*/
1023                         }
1024                         /*if playfile are supplied don't use soundcards*/
1025                         if (lc->use_files) {
1026                                 captcard=NULL;
1027                                 playcard=NULL;
1028                         }
1029                         if (call->params.in_conference){
1030                                 /* first create the graph without soundcard resources*/
1031                                 captcard=playcard=NULL;
1032                         }
1033                         if (!linphone_call_sound_resources_available(call)){
1034                                 ms_message("Sound resources are used by another call, not using soundcard.");
1035                                 captcard=playcard=NULL;
1036                         }
1037                         use_ec=captcard==NULL ? FALSE : linphone_core_echo_cancellation_enabled(lc);
1038
1039                         audio_stream_enable_adaptive_bitrate_control(call->audiostream,use_arc);
1040                         audio_stream_start_full(
1041                                 call->audiostream,
1042                                 call->audio_profile,
1043                                 stream->addr[0]!='\0' ? stream->addr : call->resultdesc->addr,
1044                                 stream->port,
1045                                 linphone_core_rtcp_enabled(lc) ? (stream->port+1) : 0,
1046                                 used_pt,
1047                                 jitt_comp,
1048                                 playfile,
1049                                 recfile,
1050                                 playcard,
1051                                 captcard,
1052                                 use_ec
1053                                 );
1054                         post_configure_audio_streams(call);
1055                         if (muted && !send_ringbacktone){
1056                                 audio_stream_set_mic_gain(call->audiostream,0);
1057                         }
1058                         if (stream->dir==SalStreamSendOnly && playfile!=NULL){
1059                                 int pause_time=500;
1060                                 ms_filter_call_method(call->audiostream->soundread,MS_FILE_PLAYER_LOOP,&pause_time);
1061                         }
1062                         if (send_ringbacktone){
1063                                 setup_ring_player(lc,call);
1064                         }
1065                         audio_stream_set_rtcp_information(call->audiostream, cname, LINPHONE_RTCP_SDES_TOOL);
1066                         if (call->params.in_conference){
1067                                 /*transform the graph to connect it to the conference filter */
1068                                 linphone_call_add_to_conf(call);
1069                         }
1070                 }else ms_warning("No audio stream accepted ?");
1071         }
1072 }
1073
1074 static void linphone_call_start_video_stream(LinphoneCall *call, const char *cname,bool_t all_inputs_muted){
1075 #ifdef VIDEO_ENABLED
1076         LinphoneCore *lc=call->core;
1077         int used_pt=-1;
1078         const SalStreamDescription *vstream=sal_media_description_find_stream(call->resultdesc,
1079                                                         SalProtoRtpAvp,SalVideo);
1080         /* shutdown preview */
1081         if (lc->previewstream!=NULL) {
1082                 video_preview_stop(lc->previewstream);
1083                 lc->previewstream=NULL;
1084         }
1085         call->current_params.has_video=FALSE;
1086         if (vstream!=NULL && vstream->dir!=SalStreamInactive && vstream->port!=0) {
1087                 const char *addr=vstream->addr[0]!='\0' ? vstream->addr : call->resultdesc->addr;
1088                 call->video_profile=make_profile(call,call->resultdesc,vstream,&used_pt);
1089                 if (used_pt!=-1){
1090                         VideoStreamDir dir=VideoStreamSendRecv;
1091                         MSWebCam *cam=lc->video_conf.device;
1092                         bool_t is_inactive=FALSE;
1093
1094                         call->current_params.has_video=TRUE;
1095
1096                         video_stream_enable_adaptive_bitrate_control(call->videostream,
1097                                                                   linphone_core_adaptive_rate_control_enabled(lc));
1098                         video_stream_set_sent_video_size(call->videostream,linphone_core_get_preferred_video_size(lc));
1099                         video_stream_enable_self_view(call->videostream,lc->video_conf.selfview);
1100                         if (lc->video_window_id!=0)
1101                                 video_stream_set_native_window_id(call->videostream,lc->video_window_id);
1102                         if (lc->preview_window_id!=0)
1103                                 video_stream_set_native_preview_window_id (call->videostream,lc->preview_window_id);
1104                         video_stream_use_preview_video_window (call->videostream,lc->use_preview_window);
1105
1106                         if (vstream->dir==SalStreamSendOnly && lc->video_conf.capture ){
1107                                 cam=get_nowebcam_device();
1108                                 dir=VideoStreamSendOnly;
1109                         }else if (vstream->dir==SalStreamRecvOnly && lc->video_conf.display ){
1110                                 dir=VideoStreamRecvOnly;
1111                         }else if (vstream->dir==SalStreamSendRecv){
1112                                 if (lc->video_conf.display && lc->video_conf.capture)
1113                                         dir=VideoStreamSendRecv;
1114                                 else if (lc->video_conf.display)
1115                                         dir=VideoStreamRecvOnly;
1116                                 else
1117                                         dir=VideoStreamSendOnly;
1118                         }else{
1119                                 ms_warning("video stream is inactive.");
1120                                 /*either inactive or incompatible with local capabilities*/
1121                                 is_inactive=TRUE;
1122                         }
1123                         if (call->camera_active==FALSE || all_inputs_muted){
1124                                 cam=get_nowebcam_device();
1125                         }
1126                         if (!is_inactive){
1127                                 video_stream_set_direction (call->videostream, dir);
1128                                 ms_message("%s lc rotation:%d\n", __FUNCTION__, lc->device_rotation);
1129                                 video_stream_set_device_rotation(call->videostream, lc->device_rotation);
1130                                 video_stream_start(call->videostream,
1131                                         call->video_profile, addr, vstream->port,
1132                                         linphone_core_rtcp_enabled(lc) ? (vstream->port+1) : 0,
1133                                         used_pt, lc->rtp_conf.audio_jitt_comp, cam);
1134                                 video_stream_set_rtcp_information(call->videostream, cname,LINPHONE_RTCP_SDES_TOOL);
1135                         }
1136                 }else ms_warning("No video stream accepted.");
1137         }else{
1138                 ms_warning("No valid video stream defined.");
1139         }
1140 #endif
1141 }
1142
1143 void linphone_call_start_media_streams(LinphoneCall *call, bool_t all_inputs_muted, bool_t send_ringbacktone){
1144         LinphoneCore *lc=call->core;
1145         LinphoneAddress *me=linphone_core_get_primary_contact_parsed(lc);
1146         char *cname;
1147         bool_t use_arc;
1148 #ifdef VIDEO_ENABLED
1149         const SalStreamDescription *vstream=sal_media_description_find_stream(call->resultdesc,
1150                                                         SalProtoRtpAvp,SalVideo);
1151 #endif
1152
1153         if(call->audiostream == NULL)
1154         {
1155                 ms_fatal("start_media_stream() called without prior init !");
1156                 return;
1157         }
1158         call->current_params = call->params;
1159         if (call->media_start_time==0) call->media_start_time=time(NULL);
1160         cname=linphone_address_as_string_uri_only(me);
1161
1162 #if defined(VIDEO_ENABLED)
1163         if (vstream!=NULL && vstream->dir!=SalStreamInactive && vstream->payloads!=NULL){
1164                 /*when video is used, do not make adaptive rate control on audio, it is stupid.*/
1165                 use_arc=FALSE;
1166         }
1167 #endif
1168         linphone_call_start_audio_stream(call,cname,all_inputs_muted,send_ringbacktone,use_arc);
1169         if (call->videostream!=NULL) {
1170                 linphone_call_start_video_stream(call,cname,all_inputs_muted);
1171         }
1172
1173         call->all_muted=all_inputs_muted;
1174         call->playing_ringbacktone=send_ringbacktone;
1175         call->up_bw=linphone_core_get_upload_bandwidth(lc);
1176
1177         if (ortp_zrtp_available()) {
1178                 OrtpZrtpParams params;
1179                 params.zid=get_hexa_zrtp_identifier(lc);
1180                 params.zid_file=lc->zrtp_secrets_cache;
1181                 audio_stream_enable_zrtp(call->audiostream,&params);
1182         }
1183
1184         goto end;
1185         end:
1186                 ms_free(cname);
1187                 linphone_address_destroy(me);
1188 }
1189
1190 static void linphone_call_log_fill_stats(LinphoneCallLog *log, AudioStream *st){
1191         audio_stream_get_local_rtp_stats (st,&log->local_stats);
1192         log->quality=audio_stream_get_average_quality_rating(st);
1193 }
1194
1195 void linphone_call_stop_media_streams(LinphoneCall *call){
1196         if (call->audiostream!=NULL) {
1197                 rtp_session_unregister_event_queue(call->audiostream->session,call->audiostream_app_evq);
1198                 ortp_ev_queue_flush(call->audiostream_app_evq);
1199                 ortp_ev_queue_destroy(call->audiostream_app_evq);
1200
1201                 if (call->audiostream->ec){
1202                         const char *state_str=NULL;
1203                         ms_filter_call_method(call->audiostream->ec,MS_ECHO_CANCELLER_GET_STATE_STRING,&state_str);
1204                         if (state_str){
1205                                 ms_message("Writing echo canceller state, %i bytes",(int)strlen(state_str));
1206                                 lp_config_set_string(call->core->config,"sound","ec_state",state_str);
1207                         }
1208                 }
1209                 linphone_call_log_fill_stats (call->log,call->audiostream);
1210                 if (call->endpoint){
1211                         linphone_call_remove_from_conf(call);
1212                 }
1213                 audio_stream_stop(call->audiostream);
1214                 call->audiostream=NULL;
1215         }
1216
1217
1218 #ifdef VIDEO_ENABLED
1219         if (call->videostream!=NULL){
1220                 rtp_session_unregister_event_queue(call->videostream->session,call->videostream_app_evq);
1221                 ortp_ev_queue_flush(call->videostream_app_evq);
1222                 ortp_ev_queue_destroy(call->videostream_app_evq);
1223                 video_stream_stop(call->videostream);
1224                 call->videostream=NULL;
1225         }
1226 #endif
1227         ms_event_queue_skip(call->core->msevq);
1228
1229         if (call->audio_profile){
1230                 rtp_profile_clear_all(call->audio_profile);
1231                 rtp_profile_destroy(call->audio_profile);
1232                 call->audio_profile=NULL;
1233         }
1234         if (call->video_profile){
1235                 rtp_profile_clear_all(call->video_profile);
1236                 rtp_profile_destroy(call->video_profile);
1237                 call->video_profile=NULL;
1238         }
1239 }
1240
1241
1242
1243 void linphone_call_enable_echo_cancellation(LinphoneCall *call, bool_t enable) {
1244         if (call!=NULL && call->audiostream!=NULL && call->audiostream->ec){
1245                 bool_t bypass_mode = !enable;
1246                 ms_filter_call_method(call->audiostream->ec,MS_ECHO_CANCELLER_SET_BYPASS_MODE,&bypass_mode);
1247         }
1248 }
1249 bool_t linphone_call_echo_cancellation_enabled(LinphoneCall *call) {
1250         if (call!=NULL && call->audiostream!=NULL && call->audiostream->ec){
1251                 bool_t val;
1252                 ms_filter_call_method(call->audiostream->ec,MS_ECHO_CANCELLER_GET_BYPASS_MODE,&val);
1253                 return !val;
1254         } else {
1255                 return linphone_core_echo_cancellation_enabled(call->core);
1256         }
1257 }
1258
1259 void linphone_call_enable_echo_limiter(LinphoneCall *call, bool_t val){
1260         if (call!=NULL && call->audiostream!=NULL ) {
1261                 if (val) {
1262                 const char *type=lp_config_get_string(call->core->config,"sound","el_type","mic");
1263                 if (strcasecmp(type,"mic")==0)
1264                         audio_stream_enable_echo_limiter(call->audiostream,ELControlMic);
1265                 else if (strcasecmp(type,"full")==0)
1266                         audio_stream_enable_echo_limiter(call->audiostream,ELControlFull);
1267                 } else {
1268                         audio_stream_enable_echo_limiter(call->audiostream,ELInactive);
1269                 }
1270         }
1271 }
1272
1273 bool_t linphone_call_echo_limiter_enabled(const LinphoneCall *call){
1274         if (call!=NULL && call->audiostream!=NULL ){
1275                 return call->audiostream->el_type !=ELInactive ;
1276         } else {
1277                 return linphone_core_echo_limiter_enabled(call->core);
1278         }
1279 }
1280
1281 /**
1282  * @addtogroup call_misc
1283  * @{
1284 **/
1285
1286 /**
1287  * Returns the measured sound volume played locally (received from remote)
1288  * It is expressed in dbm0.
1289 **/
1290 float linphone_call_get_play_volume(LinphoneCall *call){
1291         AudioStream *st=call->audiostream;
1292         if (st && st->volrecv){
1293                 float vol=0;
1294                 ms_filter_call_method(st->volrecv,MS_VOLUME_GET,&vol);
1295                 return vol;
1296
1297         }
1298         return LINPHONE_VOLUME_DB_LOWEST;
1299 }
1300
1301 /**
1302  * Returns the measured sound volume recorded locally (sent to remote)
1303  * It is expressed in dbm0.
1304 **/
1305 float linphone_call_get_record_volume(LinphoneCall *call){
1306         AudioStream *st=call->audiostream;
1307         if (st && st->volsend && !call->audio_muted && call->state==LinphoneCallStreamsRunning){
1308                 float vol=0;
1309                 ms_filter_call_method(st->volsend,MS_VOLUME_GET,&vol);
1310                 return vol;
1311
1312         }
1313         return LINPHONE_VOLUME_DB_LOWEST;
1314 }
1315
1316 /**
1317  * Obtain real-time quality rating of the call
1318  *
1319  * Based on local RTP statistics and RTCP feedback, a quality rating is computed and updated
1320  * during all the duration of the call. This function returns its value at the time of the function call.
1321  * It is expected that the rating is updated at least every 5 seconds or so.
1322  * The rating is a floating point number comprised between 0 and 5.
1323  *
1324  * 4-5 = good quality <br>
1325  * 3-4 = average quality <br>
1326  * 2-3 = poor quality <br>
1327  * 1-2 = very poor quality <br>
1328  * 0-1 = can't be worse, mostly unusable <br>
1329  *
1330  * @returns The function returns -1 if no quality measurement is available, for example if no
1331  * active audio stream exist. Otherwise it returns the quality rating.
1332 **/
1333 float linphone_call_get_current_quality(LinphoneCall *call){
1334         if (call->audiostream){
1335                 return audio_stream_get_quality_rating(call->audiostream);
1336         }
1337         return -1;
1338 }
1339
1340 /**
1341  * Returns call quality averaged over all the duration of the call.
1342  *
1343  * See linphone_call_get_current_quality() for more details about quality measurement.
1344 **/
1345 float linphone_call_get_average_quality(LinphoneCall *call){
1346         if (call->audiostream){
1347                 return audio_stream_get_average_quality_rating(call->audiostream);
1348         }
1349         return -1;
1350 }
1351
1352 /**
1353  * @}
1354 **/
1355
1356 static void display_bandwidth(RtpSession *as, RtpSession *vs){
1357         ms_message("bandwidth usage: audio=[d=%.1f,u=%.1f] video=[d=%.1f,u=%.1f] kbit/sec",
1358         (as!=NULL) ? (rtp_session_compute_recv_bandwidth(as)*1e-3) : 0,
1359         (as!=NULL) ? (rtp_session_compute_send_bandwidth(as)*1e-3) : 0,
1360         (vs!=NULL) ? (rtp_session_compute_recv_bandwidth(vs)*1e-3) : 0,
1361         (vs!=NULL) ? (rtp_session_compute_send_bandwidth(vs)*1e-3) : 0);
1362 }
1363
1364 static void linphone_core_disconnected(LinphoneCore *lc, LinphoneCall *call){
1365         char temp[256];
1366         char *from=NULL;
1367         if(call)
1368                 from = linphone_call_get_remote_address_as_string(call);
1369         if (from)
1370         {
1371                 snprintf(temp,sizeof(temp),"Remote end %s seems to have disconnected, the call is going to be closed.",from);
1372                 free(from);
1373         }
1374         else
1375         {
1376                 snprintf(temp,sizeof(temp),"Remote end seems to have disconnected, the call is going to be closed.");
1377         }
1378         if (lc->vtable.display_warning!=NULL)
1379                 lc->vtable.display_warning(lc,temp);
1380         linphone_core_terminate_call(lc,call);
1381 }
1382
1383 void linphone_call_background_tasks(LinphoneCall *call, bool_t one_second_elapsed){
1384         int disconnect_timeout = linphone_core_get_nortp_timeout(call->core);
1385         bool_t disconnected=FALSE;
1386
1387         if (call->state==LinphoneCallStreamsRunning && one_second_elapsed){
1388                 RtpSession *as=NULL,*vs=NULL;
1389                 float audio_load=0, video_load=0;
1390                 if (call->audiostream!=NULL){
1391                         as=call->audiostream->session;
1392                         if (call->audiostream->ticker)
1393                                 audio_load=ms_ticker_get_average_load(call->audiostream->ticker);
1394                 }
1395                 if (call->videostream!=NULL){
1396                         if (call->videostream->ticker)
1397                                 video_load=ms_ticker_get_average_load(call->videostream->ticker);
1398                         vs=call->videostream->session;
1399                 }
1400                 display_bandwidth(as,vs);
1401                 ms_message("Thread processing load: audio=%f\tvideo=%f",audio_load,video_load);
1402         }
1403 #ifdef VIDEO_ENABLED
1404         if (call->videostream!=NULL) {
1405                 // Beware that the application queue should not depend on treatments fron the
1406                 // mediastreamer queue.
1407                 video_stream_iterate(call->videostream);
1408
1409                 if (call->videostream_app_evq){
1410                         OrtpEvent *ev;
1411                         while (NULL != (ev=ortp_ev_queue_get(call->videostream_app_evq))){
1412                                 OrtpEventType evt=ortp_event_get_type(ev);
1413                                 if (evt == ORTP_EVENT_ZRTP_ENCRYPTION_CHANGED){
1414                                         OrtpEventData *evd=ortp_event_get_data(ev);
1415                                         linphone_call_videostream_encryption_changed(call, evd->info.zrtp_stream_encrypted);
1416                                 }
1417                                 ortp_event_destroy(ev);
1418                         }
1419                 }
1420         }
1421 #endif
1422         if (call->audiostream!=NULL) {
1423                 // Beware that the application queue should not depend on treatments fron the
1424                 // mediastreamer queue.
1425                 audio_stream_iterate(call->audiostream);
1426
1427                 if (call->audiostream->evq){
1428                         OrtpEvent *ev;
1429                         while (NULL != (ev=ortp_ev_queue_get(call->audiostream_app_evq))){
1430                                 OrtpEventType evt=ortp_event_get_type(ev);
1431                                 if (evt == ORTP_EVENT_ZRTP_ENCRYPTION_CHANGED){
1432                                         OrtpEventData *evd=ortp_event_get_data(ev);
1433                                         linphone_call_audiostream_encryption_changed(call, evd->info.zrtp_stream_encrypted);
1434                                 } else if (evt == ORTP_EVENT_ZRTP_SAS_READY) {
1435                                         OrtpEventData *evd=ortp_event_get_data(ev);
1436                                         linphone_call_audiostream_auth_token_ready(call, evd->info.zrtp_sas.sas, evd->info.zrtp_sas.verified);
1437                                 }
1438                                 ortp_event_destroy(ev);
1439                         }
1440                 }
1441         }
1442         if (call->state==LinphoneCallStreamsRunning && one_second_elapsed && call->audiostream!=NULL && disconnect_timeout>0 )
1443                 disconnected=!audio_stream_alive(call->audiostream,disconnect_timeout);
1444         if (disconnected)
1445                 linphone_core_disconnected(call->core,call);
1446 }
1447
1448 void linphone_call_log_completed(LinphoneCall *call){
1449         LinphoneCore *lc=call->core;
1450
1451         call->log->duration=time(NULL)-call->start_time;
1452
1453         if (call->log->status==LinphoneCallMissed){
1454                 char *info;
1455                 lc->missed_calls++;
1456                 info=ortp_strdup_printf(ngettext("You have missed %i call.",
1457                                          "You have missed %i calls.", lc->missed_calls),
1458                                 lc->missed_calls);
1459         if (lc->vtable.display_status!=NULL)
1460             lc->vtable.display_status(lc,info);
1461                 ms_free(info);
1462         }
1463         lc->call_logs=ms_list_prepend(lc->call_logs,(void *)call->log);
1464         if (ms_list_size(lc->call_logs)>lc->max_call_logs){
1465                 MSList *elem,*prevelem=NULL;
1466                 /*find the last element*/
1467                 for(elem=lc->call_logs;elem!=NULL;elem=elem->next){
1468                         prevelem=elem;
1469                 }
1470                 elem=prevelem;
1471                 linphone_call_log_destroy((LinphoneCallLog*)elem->data);
1472                 lc->call_logs=ms_list_remove_link(lc->call_logs,elem);
1473         }
1474         if (lc->vtable.call_log_updated!=NULL){
1475                 lc->vtable.call_log_updated(lc,call->log);
1476         }
1477         call_logs_write_to_config_file(lc);
1478 }
1479
1480