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
  29
  30 #include "mediastreamer2/mediastream.h"
  31 #include "mediastreamer2/msvolume.h"
  32 #include "mediastreamer2/msequalizer.h"
  33 #include "mediastreamer2/msfileplayer.h"
  34 #include "mediastreamer2/msjpegwriter.h"
  35 #include "mediastreamer2/mseventqueue.h"
  36
  37 #ifdef VIDEO_ENABLED
  38 static MSWebCam *get_nowebcam_device(){
  39         return ms_web_cam_manager_get_cam(ms_web_cam_manager_get(),"StaticImage: Static picture");
  40 }
  41 #endif
  42
  43 static const char* get_zrtp_identifier(LinphoneCore *lc){
  44         const char *confZid=lp_config_get_string(lc->config,"rtp","zid",NULL);
  45         if (confZid != NULL) {
  46                 return confZid;
  47         } else {
  48                 int32_t *zid=calloc(3,32);
  49                 int i=0;
  50                 for(;i<3;i++) {
  51                         zid[i]=rand();
  52                 }
  53                 lp_config_set_string(lc->config,"rtp","zid",(char*)zid);
  54                 return lp_config_get_string(lc->config,"rtp","zid",NULL);
  55         }
  56 }
  57
  58 const char* linphone_call_get_authentication_token(LinphoneCall *call){
  59         return call->audiostream->auth_token;
  60 }
  61
  62 bool_t linphone_call_get_authentication_token_verified(LinphoneCall *call){
  63         return call->audiostream->auth_token_verified;
  64 }
  65 bool_t linphone_call_are_all_streams_encrypted(LinphoneCall *call) {
  66         // Check ZRTP encryption in audiostream
  67         if (!call->audiostream->encrypted) {
  68                 return FALSE;
  69         }
  70
  71 #ifdef VIDEO_ENABLED
  72         // If video enabled, check ZRTP encryption in videostream
  73         const LinphoneCallParams *params=linphone_call_get_current_params(call);
  74         if (params->has_video && !call->videostream->encrypted) {
  75                 return FALSE;
  76         }
  77 #endif
  78
  79         return TRUE;
  80 }
  81
  82 static void propagate_encryption_changed(LinphoneCall *call){
  83         if (call->core->vtable.call_encryption_changed == NULL) return;
  84
  85         if (!linphone_call_are_all_streams_encrypted(call)) {
  86                 call->core->vtable.call_encryption_changed(call->core, call, FALSE, NULL);
  87         } else {
  88                 call->core->vtable.call_encryption_changed(call->core, call, TRUE, call->audiostream->auth_token);
  89         }
  90 }
  91
  92 #ifdef VIDEO_ENABLED
  93 static void linphone_call_videostream_encryption_changed(void *data, bool_t encrypted){
  94         ms_message("Video stream is %s", encrypted ? "encrypted" : "not encrypted");
  95
  96         LinphoneCall *call = (LinphoneCall *)data;
  97         call->videostream->encrypted=encrypted;
  98         propagate_encryption_changed(call);
  99 }
 100 #endif
 101
 102 static void linphone_call_audiostream_encryption_changed(void *data, bool_t encrypted) {
 103         ms_message("Audio stream is %s ", encrypted ? "encrypted" : "not encrypted");
 104
 105         LinphoneCall *call = (LinphoneCall *)data;
 106         call->audiostream->encrypted=encrypted;
 107         propagate_encryption_changed(call);
 108
 109
 110 #ifdef VIDEO_ENABLED
 111         // Enable video encryption
 112         const LinphoneCallParams *params=linphone_call_get_current_params(call);
 113         if (params->has_video) {
 114                 ms_message("Trying to enable encryption on video stream");
 115                 OrtpZrtpParams params;
 116                 params.zid=get_zrtp_identifier(call->core);
 117                 params.zid_file=NULL; //unused
 118                 OrtpZrtpUiCb cbs={0};
 119                 cbs.data=call;
 120                 cbs.encryption_changed=linphone_call_videostream_encryption_changed;
 121                 params.ui_cbs=&cbs;
 122                 video_stream_enable_zrtp(call->videostream,call->audiostream,&params);
 123         }
 124 #endif
 125 }
 126
 127
 128 static void linphone_call_audiostream_auth_token_ready(void *data, const char* auth_token, bool_t verified) {
 129         LinphoneCall *call=(LinphoneCall *)data;
 130         if (call->audiostream->auth_token != NULL)
 131                 ms_free(call->audiostream->auth_token);
 132
 133         call->audiostream->auth_token=ms_strdup(auth_token);
 134         call->audiostream->auth_token_verified=verified;
 135
 136         ms_message("Authentication token is %s (%s)", auth_token, verified?"verified":"unverified");
 137 }
 138
 139
 140 static MSList *make_codec_list(LinphoneCore *lc, const MSList *codecs, int bandwidth_limit){
 141         MSList *l=NULL;
 142         const MSList *it;
 143         for(it=codecs;it!=NULL;it=it->next){
 144                 PayloadType *pt=(PayloadType*)it->data;
 145                 if (pt->flags & PAYLOAD_TYPE_ENABLED){
 146                         if (bandwidth_limit>0 && !linphone_core_is_payload_type_usable_for_bandwidth(lc,pt,bandwidth_limit)){
 147                                 ms_message("Codec %s/%i eliminated because of audio bandwidth constraint.",pt->mime_type,pt->clock_rate);
 148                                 continue;
 149                         }
 150                         if (linphone_core_check_payload_type_usability(lc,pt)){
 151                                 l=ms_list_append(l,payload_type_clone(pt));
 152                         }
 153                 }
 154         }
 155         return l;
 156 }
 157
 158 static SalMediaDescription *_create_local_media_description(LinphoneCore *lc, LinphoneCall *call, unsigned int session_id, unsigned int session_ver){
 159         MSList *l;
 160         PayloadType *pt;
 161         const char *me=linphone_core_get_identity(lc);
 162         LinphoneAddress *addr=linphone_address_new(me);
 163         const char *username=linphone_address_get_username (addr);
 164         SalMediaDescription *md=sal_media_description_new();
 165
 166         md->session_id=session_id;
 167         md->session_ver=session_ver;
 168         md->nstreams=1;
 169         strncpy(md->addr,call->localip,sizeof(md->addr));
 170         strncpy(md->username,username,sizeof(md->username));
 171         md->bandwidth=linphone_core_get_download_bandwidth(lc);
 172
 173         /*set audio capabilities */
 174         strncpy(md->streams[0].addr,call->localip,sizeof(md->streams[0].addr));
 175         md->streams[0].port=call->audio_port;
 176         md->streams[0].proto=SalProtoRtpAvp;
 177         md->streams[0].type=SalAudio;
 178         md->streams[0].ptime=lc->net_conf.down_ptime;
 179         l=make_codec_list(lc,lc->codecs_conf.audio_codecs,call->params.audio_bw);
 180         pt=payload_type_clone(rtp_profile_get_payload_from_mime(&av_profile,"telephone-event"));
 181         l=ms_list_append(l,pt);
 182         md->streams[0].payloads=l;
 183
 184
 185         if (call->params.has_video){
 186                 md->nstreams++;
 187                 md->streams[1].port=call->video_port;
 188                 md->streams[1].proto=SalProtoRtpAvp;
 189                 md->streams[1].type=SalVideo;
 190                 l=make_codec_list(lc,lc->codecs_conf.video_codecs,0);
 191                 md->streams[1].payloads=l;
 192         }
 193         linphone_address_destroy(addr);
 194         return md;
 195 }
 196
 197 void update_local_media_description(LinphoneCore *lc, LinphoneCall *call, SalMediaDescription **md){
 198         if (*md == NULL) {
 199                 *md = _create_local_media_description(lc,call,0,0);
 200         } else {
 201                 unsigned int id = (*md)->session_id;
 202                 unsigned int ver = (*md)->session_ver+1;
 203                 sal_media_description_unref(*md);
 204                 *md = _create_local_media_description(lc,call,id,ver);
 205         }
 206 }
 207
 208 SalMediaDescription *create_local_media_description(LinphoneCore *lc, LinphoneCall *call){
 209         unsigned int id=rand() & 0xfff;
 210         return _create_local_media_description(lc,call,id,id);
 211 }
 212
 213 static int find_port_offset(LinphoneCore *lc){
 214         int offset;
 215         MSList *elem;
 216         int audio_port;
 217         bool_t already_used=FALSE;
 218         for(offset=0;offset<100;offset+=2){
 219                 audio_port=linphone_core_get_audio_port (lc)+offset;
 220                 already_used=FALSE;
 221                 for(elem=lc->calls;elem!=NULL;elem=elem->next){
 222                         LinphoneCall *call=(LinphoneCall*)elem->data;
 223                         if (call->audio_port==audio_port) {
 224                                 already_used=TRUE;
 225                                 break;
 226                         }
 227                 }
 228                 if (!already_used) break;
 229         }
 230         if (offset==100){
 231                 ms_error("Could not find any free port !");
 232                 return -1;
 233         }
 234         return offset;
 235 }
 236
 237 static void linphone_call_init_common(LinphoneCall *call, LinphoneAddress *from, LinphoneAddress *to){
 238         int port_offset;
 239         call->refcnt=1;
 240         call->state=LinphoneCallIdle;
 241         call->start_time=time(NULL);
 242         call->media_start_time=0;
 243         call->log=linphone_call_log_new(call, from, to);
 244         call->owns_call_log=TRUE;
 245         linphone_core_notify_all_friends(call->core,LinphoneStatusOnThePhone);
 246         port_offset=find_port_offset (call->core);
 247         if (port_offset==-1) return;
 248         call->audio_port=linphone_core_get_audio_port(call->core)+port_offset;
 249         call->video_port=linphone_core_get_video_port(call->core)+port_offset;
 250
 251 }
 252
 253 static void discover_mtu(LinphoneCore *lc, const char *remote){
 254         int mtu;
 255         if (lc->net_conf.mtu==0 ){
 256                 /*attempt to discover mtu*/
 257                 mtu=ms_discover_mtu(remote);
 258                 if (mtu>0){
 259                         ms_set_mtu(mtu);
 260                         ms_message("Discovered mtu is %i, RTP payload max size is %i",
 261                                 mtu, ms_get_payload_max_size());
 262                 }
 263         }
 264 }
 265
 266 LinphoneCall * linphone_call_new_outgoing(struct _LinphoneCore *lc, LinphoneAddress *from, LinphoneAddress *to, const LinphoneCallParams *params)
 267 {
 268         LinphoneCall *call=ms_new0(LinphoneCall,1);
 269         call->dir=LinphoneCallOutgoing;
 270         call->op=sal_op_new(lc->sal);
 271         sal_op_set_user_pointer(call->op,call);
 272         call->core=lc;
 273         linphone_core_get_local_ip(lc,linphone_address_get_domain(to),call->localip);
 274         linphone_call_init_common(call,from,to);
 275         call->params=*params;
 276         call->localdesc=create_local_media_description (lc,call);
 277         call->camera_active=params->has_video;
 278         if (linphone_core_get_firewall_policy(call->core)==LinphonePolicyUseStun)
 279                 linphone_core_run_stun_tests(call->core,call);
 280         discover_mtu(lc,linphone_address_get_domain (to));
 281         if (params->referer){
 282                 sal_call_set_referer (call->op,params->referer->op);
 283         }
 284         return call;
 285 }
 286
 287 LinphoneCall * linphone_call_new_incoming(LinphoneCore *lc, LinphoneAddress *from, LinphoneAddress *to, SalOp *op){
 288         LinphoneCall *call=ms_new0(LinphoneCall,1);
 289         char *from_str;
 290
 291         call->dir=LinphoneCallIncoming;
 292         sal_op_set_user_pointer(op,call);
 293         call->op=op;
 294         call->core=lc;
 295
 296         if (lc->sip_conf.ping_with_options){
 297                 /*the following sends an option request back to the caller so that
 298                  we get a chance to discover our nat'd address before answering.*/
 299                 call->ping_op=sal_op_new(lc->sal);
 300                 from_str=linphone_address_as_string(from);
 301                 sal_op_set_route(call->ping_op,sal_op_get_network_origin(call->op));
 302                 sal_op_set_user_pointer(call->ping_op,call);
 303                 sal_ping(call->ping_op,linphone_core_find_best_identity(lc,from,NULL),from_str);
 304                 ms_free(from_str);
 305         }
 306
 307         linphone_address_clean(from);
 308         linphone_core_get_local_ip(lc,linphone_address_get_domain(from),call->localip);
 309         linphone_call_init_common(call, from, to);
 310         call->params.has_video=linphone_core_video_enabled(lc);
 311         call->localdesc=create_local_media_description (lc,call);
 312         call->camera_active=call->params.has_video;
 313         if (linphone_core_get_firewall_policy(call->core)==LinphonePolicyUseStun)
 314                 linphone_core_run_stun_tests(call->core,call);
 315         discover_mtu(lc,linphone_address_get_domain(from));
 316         return call;
 317 }
 318
 319 /* this function is called internally to get rid of a call.
 320  It performs the following tasks:
 321  - remove the call from the internal list of calls
 322  - update the call logs accordingly
 323 */
 324
 325 static void linphone_call_set_terminated(LinphoneCall *call){
 326         LinphoneCore *lc=call->core;
 327
 328         linphone_core_update_allocated_audio_bandwidth(lc);
 329
 330         call->owns_call_log=FALSE;
 331         linphone_call_log_completed(call);
 332
 333
 334         if (call == lc->current_call){
 335                 ms_message("Resetting the current call");
 336                 lc->current_call=NULL;
 337         }
 338
 339         if (linphone_core_del_call(lc,call) != 0){
 340                 ms_error("Could not remove the call from the list !!!");
 341         }
 342
 343         if (ms_list_size(lc->calls)==0)
 344                 linphone_core_notify_all_friends(lc,lc->presence_mode);
 345
 346 }
 347
 348 const char *linphone_call_state_to_string(LinphoneCallState cs){
 349         switch (cs){
 350                 case LinphoneCallIdle:
 351                         return "LinphoneCallIdle";
 352                 case LinphoneCallIncomingReceived:
 353                         return "LinphoneCallIncomingReceived";
 354                 case LinphoneCallOutgoingInit:
 355                         return "LinphoneCallOutgoingInit";
 356                 case LinphoneCallOutgoingProgress:
 357                         return "LinphoneCallOutgoingProgress";
 358                 case LinphoneCallOutgoingRinging:
 359                         return "LinphoneCallOutgoingRinging";
 360                 case LinphoneCallOutgoingEarlyMedia:
 361                         return "LinphoneCallOutgoingEarlyMedia";
 362                 case LinphoneCallConnected:
 363                         return "LinphoneCallConnected";
 364                 case LinphoneCallStreamsRunning:
 365                         return "LinphoneCallStreamsRunning";
 366                 case LinphoneCallPausing:
 367                         return "LinphoneCallPausing";
 368                 case LinphoneCallPaused:
 369                         return "LinphoneCallPaused";
 370                 case LinphoneCallResuming:
 371                         return "LinphoneCallResuming";
 372                 case LinphoneCallRefered:
 373                         return "LinphoneCallRefered";
 374                 case LinphoneCallError:
 375                         return "LinphoneCallError";
 376                 case LinphoneCallEnd:
 377                         return "LinphoneCallEnd";
 378                 case LinphoneCallPausedByRemote:
 379                         return "LinphoneCallPausedByRemote";
 380                 case LinphoneCallUpdatedByRemote:
 381                         return "LinphoneCallUpdatedByRemote";
 382                 case LinphoneCallIncomingEarlyMedia:
 383                         return "LinphoneCallIncomingEarlyMedia";
 384                 case LinphoneCallUpdated:
 385                         return "LinphoneCallUpdated";
 386                 case LinphoneCallReleased:
 387                         return "LinphoneCallReleased";
 388         }
 389         return "undefined state";
 390 }
 391
 392 void linphone_call_set_state(LinphoneCall *call, LinphoneCallState cstate, const char *message){
 393         LinphoneCore *lc=call->core;
 394
 395         if (call->state!=cstate){
 396                 if (call->state==LinphoneCallEnd || call->state==LinphoneCallError){
 397                         if (cstate!=LinphoneCallReleased){
 398                                 ms_warning("Spurious call state change from %s to %s, ignored.",linphone_call_state_to_string(call->state),
 399                            linphone_call_state_to_string(cstate));
 400                                 return;
 401                         }
 402                 }
 403                 ms_message("Call %p: moving from state %s to %s",call,linphone_call_state_to_string(call->state),
 404                            linphone_call_state_to_string(cstate));
 405                 if (cstate!=LinphoneCallRefered){
 406                         /*LinphoneCallRefered is rather an event, not a state.
 407                          Indeed it does not change the state of the call (still paused or running)*/
 408                         call->state=cstate;
 409                 }
 410                 if (cstate==LinphoneCallEnd || cstate==LinphoneCallError){
 411              if (call->reason==LinphoneReasonDeclined){
 412                  call->log->status=LinphoneCallDeclined;
 413              }
 414             linphone_call_set_terminated (call);
 415                 }
 416         if (cstate == LinphoneCallConnected) {
 417             call->log->status=LinphoneCallSuccess;
 418         }
 419
 420                 if (lc->vtable.call_state_changed)
 421                         lc->vtable.call_state_changed(lc,call,cstate,message);
 422                 if (cstate==LinphoneCallReleased){
 423                         if (call->op!=NULL) {
 424                                 /* so that we cannot have anymore upcalls for SAL
 425                                  concerning this call*/
 426                                 sal_op_release(call->op);
 427                                 call->op=NULL;
 428                         }
 429                         linphone_call_unref(call);
 430                 }
 431         }
 432 }
 433
 434 static void linphone_call_destroy(LinphoneCall *obj)
 435 {
 436         if (obj->op!=NULL) {
 437                 sal_op_release(obj->op);
 438                 obj->op=NULL;
 439         }
 440         if (obj->resultdesc!=NULL) {
 441                 sal_media_description_unref(obj->resultdesc);
 442                 obj->resultdesc=NULL;
 443         }
 444         if (obj->localdesc!=NULL) {
 445                 sal_media_description_unref(obj->localdesc);
 446                 obj->localdesc=NULL;
 447         }
 448         if (obj->ping_op) {
 449                 sal_op_release(obj->ping_op);
 450         }
 451         if (obj->refer_to){
 452                 ms_free(obj->refer_to);
 453         }
 454         if (obj->owns_call_log)
 455                 linphone_call_log_destroy(obj->log);
 456         ms_free(obj);
 457 }
 458
 459 /**
 460  * @addtogroup call_control
 461  * @{
 462 **/
 463
 464 /**
 465  * Increments the call 's reference count.
 466  * An application that wishes to retain a pointer to call object
 467  * must use this function to unsure the pointer remains
 468  * valid. Once the application no more needs this pointer,
 469  * it must call linphone_call_unref().
 470 **/
 471 void linphone_call_ref(LinphoneCall *obj){
 472         obj->refcnt++;
 473 }
 474
 475 /**
 476  * Decrements the call object reference count.
 477  * See linphone_call_ref().
 478 **/
 479 void linphone_call_unref(LinphoneCall *obj){
 480         obj->refcnt--;
 481         if (obj->refcnt==0){
 482                 linphone_call_destroy(obj);
 483         }
 484 }
 485
 486 /**
 487  * Returns current parameters associated to the call.
 488 **/
 489 const LinphoneCallParams * linphone_call_get_current_params(const LinphoneCall *call){
 490         return &call->current_params;
 491 }
 492
 493 /**
 494  * Returns the remote address associated to this call
 495  *
 496 **/
 497 const LinphoneAddress * linphone_call_get_remote_address(const LinphoneCall *call){
 498         return call->dir==LinphoneCallIncoming ? call->log->from : call->log->to;
 499 }
 500
 501 /**
 502  * Returns the remote address associated to this call as a string.
 503  *
 504  * The result string must be freed by user using ms_free().
 505 **/
 506 char *linphone_call_get_remote_address_as_string(const LinphoneCall *call){
 507         return linphone_address_as_string(linphone_call_get_remote_address(call));
 508 }
 509
 510 /**
 511  * Retrieves the call's current state.
 512 **/
 513 LinphoneCallState linphone_call_get_state(const LinphoneCall *call){
 514         return call->state;
 515 }
 516
 517 /**
 518  * Returns the reason for a call termination (either error or normal termination)
 519 **/
 520 LinphoneReason linphone_call_get_reason(const LinphoneCall *call){
 521         return call->reason;
 522 }
 523
 524 /**
 525  * Get the user_pointer in the LinphoneCall
 526  *
 527  * @ingroup call_control
 528  *
 529  * return user_pointer an opaque user pointer that can be retrieved at any time
 530 **/
 531 void *linphone_call_get_user_pointer(LinphoneCall *call)
 532 {
 533         return call->user_pointer;
 534 }
 535
 536 /**
 537  * Set the user_pointer in the LinphoneCall
 538  *
 539  * @ingroup call_control
 540  *
 541  * the user_pointer is an opaque user pointer that can be retrieved at any time in the LinphoneCall
 542 **/
 543 void linphone_call_set_user_pointer(LinphoneCall *call, void *user_pointer)
 544 {
 545         call->user_pointer = user_pointer;
 546 }
 547
 548 /**
 549  * Returns the call log associated to this call.
 550 **/
 551 LinphoneCallLog *linphone_call_get_call_log(const LinphoneCall *call){
 552         return call->log;
 553 }
 554
 555 /**
 556  * Returns the refer-to uri (if the call was transfered).
 557 **/
 558 const char *linphone_call_get_refer_to(const LinphoneCall *call){
 559         return call->refer_to;
 560 }
 561
 562 /**
 563  * Returns direction of the call (incoming or outgoing).
 564 **/
 565 LinphoneCallDir linphone_call_get_dir(const LinphoneCall *call){
 566         return call->log->dir;
 567 }
 568
 569 /**
 570  * Returns the far end's user agent description string, if available.
 571 **/
 572 const char *linphone_call_get_remote_user_agent(LinphoneCall *call){
 573         if (call->op){
 574                 return sal_op_get_remote_ua (call->op);
 575         }
 576         return NULL;
 577 }
 578
 579 /**
 580  * Returns true if this calls has received a transfer that has not been
 581  * executed yet.
 582  * Pending transfers are executed when this call is being paused or closed,
 583  * locally or by remote endpoint.
 584  * If the call is already paused while receiving the transfer request, the
 585  * transfer immediately occurs.
 586 **/
 587 bool_t linphone_call_has_transfer_pending(const LinphoneCall *call){
 588         return call->refer_pending;
 589 }
 590
 591 /**
 592  * Returns call's duration in seconds.
 593 **/
 594 int linphone_call_get_duration(const LinphoneCall *call){
 595         if (call->media_start_time==0) return 0;
 596         return time(NULL)-call->media_start_time;
 597 }
 598
 599 /**
 600  * Returns the call object this call is replacing, if any.
 601  * Call replacement can occur during call transfers.
 602  * By default, the core automatically terminates the replaced call and accept the new one.
 603  * This function allows the application to know whether a new incoming call is a one that replaces another one.
 604 **/
 605 LinphoneCall *linphone_call_get_replaced_call(LinphoneCall *call){
 606         SalOp *op=sal_call_get_replaces(call->op);
 607         if (op){
 608                 return (LinphoneCall*)sal_op_get_user_pointer(op);
 609         }
 610         return NULL;
 611 }
 612
 613 /**
 614  * Indicate whether camera input should be sent to remote end.
 615 **/
 616 void linphone_call_enable_camera (LinphoneCall *call, bool_t enable){
 617 #ifdef VIDEO_ENABLED
 618         if (call->videostream!=NULL && call->videostream->ticker!=NULL){
 619                 LinphoneCore *lc=call->core;
 620                 MSWebCam *nowebcam=get_nowebcam_device();
 621                 if (call->camera_active!=enable && lc->video_conf.device!=nowebcam){
 622                         video_stream_change_camera(call->videostream,
 623                                      enable ? lc->video_conf.device : nowebcam);
 624                 }
 625         }
 626         call->camera_active=enable;
 627 #endif
 628 }
 629
 630 /**
 631  * Take a photo of currently received video and write it into a jpeg file.
 632 **/
 633 int linphone_call_take_video_snapshot(LinphoneCall *call, const char *file){
 634 #ifdef VIDEO_ENABLED
 635         if (call->videostream!=NULL && call->videostream->jpegwriter!=NULL){
 636                 return ms_filter_call_method(call->videostream->jpegwriter,MS_JPEG_WRITER_TAKE_SNAPSHOT,(void*)file);
 637         }
 638         ms_warning("Cannot take snapshot: no currently running video stream on this call.");
 639         return -1;
 640 #endif
 641         return -1;
 642 }
 643
 644 /**
 645  * Returns TRUE if camera pictures are sent to the remote party.
 646 **/
 647 bool_t linphone_call_camera_enabled (const LinphoneCall *call){
 648         return call->camera_active;
 649 }
 650
 651 /**
 652  * Enable video stream.
 653 **/
 654 void linphone_call_params_enable_video(LinphoneCallParams *cp, bool_t enabled){
 655         cp->has_video=enabled;
 656 }
 657
 658 /**
 659  * Returns whether video is enabled.
 660 **/
 661 bool_t linphone_call_params_video_enabled(const LinphoneCallParams *cp){
 662         return cp->has_video;
 663 }
 664
 665 /**
 666  * Enable sending of real early media (during outgoing calls).
 667 **/
 668 void linphone_call_params_enable_early_media_sending(LinphoneCallParams *cp, bool_t enabled){
 669         cp->real_early_media=enabled;
 670 }
 671
 672 bool_t linphone_call_params_early_media_sending_enabled(const LinphoneCallParams *cp){
 673         return cp->real_early_media;
 674 }
 675
 676 /**
 677  * Refine bandwidth settings for this call by setting a bandwidth limit for audio streams.
 678  * As a consequence, codecs whose bitrates are not compatible with this limit won't be used.
 679 **/
 680 void linphone_call_params_set_audio_bandwidth_limit(LinphoneCallParams *cp, int bandwidth){
 681         cp->audio_bw=bandwidth;
 682 }
 683
 684 #ifdef VIDEO_ENABLED
 685 /**
 686  * Request remote side to send us a Video Fast Update.
 687 **/
 688 void linphone_call_send_vfu_request(LinphoneCall *call)
 689 {
 690         if (LinphoneCallStreamsRunning == linphone_call_get_state(call))
 691                 sal_call_send_vfu_request(call->op);
 692 }
 693 #endif
 694
 695 /**
 696  *
 697 **/
 698 LinphoneCallParams * linphone_call_params_copy(const LinphoneCallParams *cp){
 699         LinphoneCallParams *ncp=ms_new0(LinphoneCallParams,1);
 700         memcpy(ncp,cp,sizeof(LinphoneCallParams));
 701         return ncp;
 702 }
 703
 704 /**
 705  *
 706 **/
 707 void linphone_call_params_destroy(LinphoneCallParams *p){
 708         ms_free(p);
 709 }
 710
 711 /**
 712  * @}
 713 **/
 714
 715
 716 #ifdef TEST_EXT_RENDERER
 717 static void rendercb(void *data, const MSPicture *local, const MSPicture *remote){
 718         ms_message("rendercb, local buffer=%p, remote buffer=%p",
 719                    local ? local->planes[0] : NULL, remote? remote->planes[0] : NULL);
 720 }
 721 #endif
 722
 723 #ifdef VIDEO_ENABLED
 724 static void video_stream_event_cb(void *user_pointer, const MSFilter *f, const unsigned int event_id, const void *args){
 725         ms_warning("In linphonecall.c: video_stream_event_cb");
 726         switch (event_id) {
 727                 case MS_VIDEO_DECODER_DECODING_ERRORS:
 728                         ms_warning("Case is MS_VIDEO_DECODER_DECODING_ERRORS");
 729                         linphone_call_send_vfu_request((LinphoneCall*) user_pointer);
 730                         break;
 731                 default:
 732                         ms_warning("Unhandled event %i", event_id);
 733                         break;
 734         }
 735 }
 736 #endif
 737
 738 void linphone_call_init_media_streams(LinphoneCall *call){
 739         LinphoneCore *lc=call->core;
 740         SalMediaDescription *md=call->localdesc;
 741         AudioStream *audiostream;
 742
 743         call->audiostream=audiostream=audio_stream_new(md->streams[0].port,linphone_core_ipv6_enabled(lc));
 744         if (linphone_core_echo_limiter_enabled(lc)){
 745                 const char *type=lp_config_get_string(lc->config,"sound","el_type","mic");
 746                 if (strcasecmp(type,"mic")==0)
 747                         audio_stream_enable_echo_limiter(audiostream,ELControlMic);
 748                 else if (strcasecmp(type,"full")==0)
 749                         audio_stream_enable_echo_limiter(audiostream,ELControlFull);
 750         }
 751         audio_stream_enable_gain_control(audiostream,TRUE);
 752         if (linphone_core_echo_cancellation_enabled(lc)){
 753                 int len,delay,framesize;
 754                 const char *statestr=lp_config_get_string(lc->config,"sound","ec_state",NULL);
 755                 len=lp_config_get_int(lc->config,"sound","ec_tail_len",0);
 756                 delay=lp_config_get_int(lc->config,"sound","ec_delay",0);
 757                 framesize=lp_config_get_int(lc->config,"sound","ec_framesize",0);
 758                 audio_stream_set_echo_canceller_params(audiostream,len,delay,framesize);
 759                 if (statestr && audiostream->ec){
 760                         ms_filter_call_method(audiostream->ec,MS_ECHO_CANCELLER_SET_STATE_STRING,(void*)statestr);
 761                 }
 762         }
 763         audio_stream_enable_automatic_gain_control(audiostream,linphone_core_agc_enabled(lc));
 764         {
 765                 int enabled=lp_config_get_int(lc->config,"sound","noisegate",0);
 766                 audio_stream_enable_noise_gate(audiostream,enabled);
 767         }
 768
 769         if (lc->a_rtp)
 770                 rtp_session_set_transports(audiostream->session,lc->a_rtp,lc->a_rtcp);
 771
 772 #ifdef VIDEO_ENABLED
 773
 774         if ((lc->video_conf.display || lc->video_conf.capture) && md->streams[1].port>0){
 775                 call->videostream=video_stream_new(md->streams[1].port,linphone_core_ipv6_enabled(lc));
 776         if( lc->video_conf.displaytype != NULL)
 777                 video_stream_set_display_filter_name(call->videostream,lc->video_conf.displaytype);
 778         video_stream_set_event_callback(call->videostream,video_stream_event_cb, call);
 779         if (lc->v_rtp)
 780                 rtp_session_set_transports(call->videostream->session,lc->v_rtp,lc->v_rtcp);
 781 #ifdef TEST_EXT_RENDERER
 782                 video_stream_set_render_callback(call->videostream,rendercb,NULL);
 783 #endif
 784         }
 785 #else
 786         call->videostream=NULL;
 787 #endif
 788 }
 789
 790
 791 static int dtmf_tab[16]={'0','1','2','3','4','5','6','7','8','9','*','#','A','B','C','D'};
 792
 793 static void linphone_core_dtmf_received(RtpSession* s, int dtmf, void* user_data){
 794         LinphoneCore* lc = (LinphoneCore*)user_data;
 795         if (dtmf<0 || dtmf>15){
 796                 ms_warning("Bad dtmf value %i",dtmf);
 797                 return;
 798         }
 799         if (lc->vtable.dtmf_received != NULL)
 800                 lc->vtable.dtmf_received(lc, linphone_core_get_current_call(lc), dtmf_tab[dtmf]);
 801 }
 802
 803 static void parametrize_equalizer(LinphoneCore *lc, AudioStream *st){
 804         if (st->equalizer){
 805                 MSFilter *f=st->equalizer;
 806                 int enabled=lp_config_get_int(lc->config,"sound","eq_active",0);
 807                 const char *gains=lp_config_get_string(lc->config,"sound","eq_gains",NULL);
 808                 ms_filter_call_method(f,MS_EQUALIZER_SET_ACTIVE,&enabled);
 809                 if (enabled){
 810                         if (gains){
 811                                 do{
 812                                         int bytes;
 813                                         MSEqualizerGain g;
 814                                         if (sscanf(gains,"%f:%f:%f %n",&g.frequency,&g.gain,&g.width,&bytes)==3){
 815                                                 ms_message("Read equalizer gains: %f(~%f) --> %f",g.frequency,g.width,g.gain);
 816                                                 ms_filter_call_method(f,MS_EQUALIZER_SET_GAIN,&g);
 817                                                 gains+=bytes;
 818                                         }else break;
 819                                 }while(1);
 820                         }
 821                 }
 822         }
 823 }
 824
 825
 826 static void post_configure_audio_streams(LinphoneCall*call){
 827         AudioStream *st=call->audiostream;
 828         LinphoneCore *lc=call->core;
 829         float mic_gain=lp_config_get_float(lc->config,"sound","mic_gain",1);
 830         float thres = 0;
 831         float recv_gain;
 832         float ng_thres=lp_config_get_float(lc->config,"sound","ng_thres",0.05);
 833         float ng_floorgain=lp_config_get_float(lc->config,"sound","ng_floorgain",0);
 834         int dc_removal=lp_config_get_int(lc->config,"sound","dc_removal",0);
 835
 836         if (!call->audio_muted)
 837                 audio_stream_set_mic_gain(st,mic_gain);
 838         else
 839                 audio_stream_set_mic_gain(st,0);
 840
 841         recv_gain = lc->sound_conf.soft_play_lev;
 842         if (recv_gain != 0) {
 843                 linphone_core_set_playback_gain_db (lc,recv_gain);
 844         }
 845         if (st->volsend){
 846                 ms_filter_call_method(st->volsend,MS_VOLUME_REMOVE_DC,&dc_removal);
 847                 float speed=lp_config_get_float(lc->config,"sound","el_speed",-1);
 848                 thres=lp_config_get_float(lc->config,"sound","el_thres",-1);
 849                 float force=lp_config_get_float(lc->config,"sound","el_force",-1);
 850                 int sustain=lp_config_get_int(lc->config,"sound","el_sustain",-1);
 851                 float transmit_thres=lp_config_get_float(lc->config,"sound","el_transmit_thres",-1);
 852                 MSFilter *f=NULL;
 853                 f=st->volsend;
 854                 if (speed==-1) speed=0.03;
 855                 if (force==-1) force=25;
 856                 ms_filter_call_method(f,MS_VOLUME_SET_EA_SPEED,&speed);
 857                 ms_filter_call_method(f,MS_VOLUME_SET_EA_FORCE,&force);
 858                 if (thres!=-1)
 859                         ms_filter_call_method(f,MS_VOLUME_SET_EA_THRESHOLD,&thres);
 860                 if (sustain!=-1)
 861                         ms_filter_call_method(f,MS_VOLUME_SET_EA_SUSTAIN,&sustain);
 862                 if (transmit_thres!=-1)
 863                                 ms_filter_call_method(f,MS_VOLUME_SET_EA_TRANSMIT_THRESHOLD,&transmit_thres);
 864
 865                 ms_filter_call_method(st->volsend,MS_VOLUME_SET_NOISE_GATE_THRESHOLD,&ng_thres);
 866                 ms_filter_call_method(st->volsend,MS_VOLUME_SET_NOISE_GATE_FLOORGAIN,&ng_floorgain);
 867         }
 868         if (st->volrecv){
 869                 /* parameters for a limited noise-gate effect, using echo limiter threshold */
 870                 float floorgain = 1/mic_gain;
 871                 ms_filter_call_method(st->volrecv,MS_VOLUME_SET_NOISE_GATE_THRESHOLD,&thres);
 872                 ms_filter_call_method(st->volrecv,MS_VOLUME_SET_NOISE_GATE_FLOORGAIN,&floorgain);
 873         }
 874         parametrize_equalizer(lc,st);
 875         if (lc->vtable.dtmf_received!=NULL){
 876                 /* replace by our default action*/
 877                 audio_stream_play_received_dtmfs(call->audiostream,FALSE);
 878                 rtp_session_signal_connect(call->audiostream->session,"telephone-event",(RtpCallback)linphone_core_dtmf_received,(unsigned long)lc);
 879         }
 880 }
 881
 882 static RtpProfile *make_profile(LinphoneCall *call, const SalMediaDescription *md, const SalStreamDescription *desc, int *used_pt){
 883         int bw;
 884         const MSList *elem;
 885         RtpProfile *prof=rtp_profile_new("Call profile");
 886         bool_t first=TRUE;
 887         int remote_bw=0;
 888         LinphoneCore *lc=call->core;
 889         int up_ptime=0;
 890         *used_pt=-1;
 891
 892         for(elem=desc->payloads;elem!=NULL;elem=elem->next){
 893                 PayloadType *pt=(PayloadType*)elem->data;
 894                 int number;
 895
 896                 if ((pt->flags & PAYLOAD_TYPE_FLAG_CAN_SEND) && first) {
 897                         if (desc->type==SalAudio){
 898                                 linphone_core_update_allocated_audio_bandwidth_in_call(call,pt);
 899                                 up_ptime=linphone_core_get_upload_ptime(lc);
 900                         }
 901                         *used_pt=payload_type_get_number(pt);
 902                         first=FALSE;
 903                 }
 904                 if (desc->bandwidth>0) remote_bw=desc->bandwidth;
 905                 else if (md->bandwidth>0) {
 906                         /*case where b=AS is given globally, not per stream*/
 907                         remote_bw=md->bandwidth;
 908                         if (desc->type==SalVideo){
 909                                 remote_bw=get_video_bandwidth(remote_bw,call->audio_bw);
 910                         }
 911                 }
 912
 913                 if (desc->type==SalAudio){
 914                                 bw=get_min_bandwidth(call->audio_bw,remote_bw);
 915                 }else bw=get_min_bandwidth(get_video_bandwidth(linphone_core_get_upload_bandwidth (lc),call->audio_bw),remote_bw);
 916                 if (bw>0) pt->normal_bitrate=bw*1000;
 917                 else if (desc->type==SalAudio){
 918                         pt->normal_bitrate=-1;
 919                 }
 920                 if (desc->ptime>0){
 921                         up_ptime=desc->ptime;
 922                 }
 923                 if (up_ptime>0){
 924                         char tmp[40];
 925                         snprintf(tmp,sizeof(tmp),"ptime=%i",up_ptime);
 926                         payload_type_append_send_fmtp(pt,tmp);
 927                 }
 928                 number=payload_type_get_number(pt);
 929                 if (rtp_profile_get_payload(prof,number)!=NULL){
 930                         ms_warning("A payload type with number %i already exists in profile !",number);
 931                 }else
 932                         rtp_profile_set_payload(prof,number,pt);
 933         }
 934         return prof;
 935 }
 936
 937
 938 static void setup_ring_player(LinphoneCore *lc, LinphoneCall *call){
 939         int pause_time=3000;
 940         audio_stream_play(call->audiostream,lc->sound_conf.ringback_tone);
 941         ms_filter_call_method(call->audiostream->soundread,MS_FILE_PLAYER_LOOP,&pause_time);
 942 }
 943
 944
 945 void linphone_call_start_media_streams(LinphoneCall *call, bool_t all_inputs_muted, bool_t send_ringbacktone){
 946         LinphoneCore *lc=call->core;
 947         LinphoneAddress *me=linphone_core_get_primary_contact_parsed(lc);
 948         const char *tool="linphone-" LINPHONE_VERSION;
 949         char *cname;
 950         int used_pt=-1;
 951 #ifdef VIDEO_ENABLED
 952         const SalStreamDescription *vstream=sal_media_description_find_stream(call->resultdesc,
 953                                                         SalProtoRtpAvp,SalVideo);
 954 #endif
 955         bool_t use_arc=linphone_core_adaptive_rate_control_enabled(lc);
 956
 957         if(call->audiostream == NULL)
 958         {
 959                 ms_fatal("start_media_stream() called without prior init !");
 960                 return;
 961         }
 962         call->current_params = call->params;
 963         /* adjust rtp jitter compensation. It must be at least the latency of the sound card */
 964         int jitt_comp=MAX(lc->sound_conf.latency,lc->rtp_conf.audio_jitt_comp);
 965
 966         if (call->media_start_time==0) call->media_start_time=time(NULL);
 967
 968         cname=linphone_address_as_string_uri_only(me);
 969         {
 970                 const SalStreamDescription *stream=sal_media_description_find_stream(call->resultdesc,
 971                                                         SalProtoRtpAvp,SalAudio);
 972                 if (stream && stream->dir!=SalStreamInactive && stream->port!=0){
 973                         MSSndCard *playcard=lc->sound_conf.lsd_card ?
 974                                 lc->sound_conf.lsd_card : lc->sound_conf.play_sndcard;
 975                         MSSndCard *captcard=lc->sound_conf.capt_sndcard;
 976                         const char *playfile=lc->play_file;
 977                         const char *recfile=lc->rec_file;
 978                         call->audio_profile=make_profile(call,call->resultdesc,stream,&used_pt);
 979                         bool_t use_ec,use_arc_audio=use_arc;
 980
 981                         if (used_pt!=-1){
 982                                 if (playcard==NULL) {
 983                                         ms_warning("No card defined for playback !");
 984                                 }
 985                                 if (captcard==NULL) {
 986                                         ms_warning("No card defined for capture !");
 987                                 }
 988                                 /*Replace soundcard filters by inactive file players or recorders
 989                                  when placed in recvonly or sendonly mode*/
 990                                 if (stream->port==0 || stream->dir==SalStreamRecvOnly){
 991                                         captcard=NULL;
 992                                         playfile=NULL;
 993                                 }else if (stream->dir==SalStreamSendOnly){
 994                                         playcard=NULL;
 995                                         captcard=NULL;
 996                                         recfile=NULL;
 997                                         /*And we will eventually play "playfile" if set by the user*/
 998                                         /*playfile=NULL;*/
 999                                 }
1000                                 if (send_ringbacktone){
1001                                         captcard=NULL;
1002                                         playfile=NULL;/* it is setup later*/
1003                                 }
1004                                 /*if playfile are supplied don't use soundcards*/
1005                                 if (lc->use_files) {
1006                                         captcard=NULL;
1007                                         playcard=NULL;
1008                                 }
1009                                 use_ec=captcard==NULL ? FALSE : linphone_core_echo_cancellation_enabled(lc);
1010 #if defined(VIDEO_ENABLED)
1011                                 if (vstream && vstream->dir!=SalStreamInactive && vstream->payloads!=NULL){
1012                                         /*when video is used, do not make adaptive rate control on audio, it is stupid.*/
1013                                         use_arc_audio=FALSE;
1014         #if defined(ANDROID)
1015                                         /*On android we have to disable the echo canceller to preserve CPU for video codecs */
1016                                         use_ec=FALSE;
1017         #endif
1018                                 }
1019 #endif
1020                                 audio_stream_enable_adaptive_bitrate_control(call->audiostream,use_arc_audio);
1021                                 audio_stream_start_full(
1022                                         call->audiostream,
1023                                         call->audio_profile,
1024                                         stream->addr[0]!='\0' ? stream->addr : call->resultdesc->addr,
1025                                         stream->port,
1026                                         stream->port+1,
1027                                         used_pt,
1028                                         jitt_comp,
1029                                         playfile,
1030                                         recfile,
1031                                         playcard,
1032                                         captcard,
1033                                         use_ec
1034                                         );
1035                                 post_configure_audio_streams(call);
1036                                 if (all_inputs_muted && !send_ringbacktone){
1037                                         audio_stream_set_mic_gain(call->audiostream,0);
1038                                 }
1039                                 if (stream->dir==SalStreamSendOnly && playfile!=NULL){
1040                                         int pause_time=500;
1041                                         ms_filter_call_method(call->audiostream->soundread,MS_FILE_PLAYER_LOOP,&pause_time);
1042                                 }
1043                                 if (send_ringbacktone){
1044                                         setup_ring_player(lc,call);
1045                                 }
1046                                 audio_stream_set_rtcp_information(call->audiostream, cname, tool);
1047                         }else ms_warning("No audio stream accepted ?");
1048                 }
1049         }
1050 #ifdef VIDEO_ENABLED
1051         {
1052
1053                 used_pt=-1;
1054                 /* shutdown preview */
1055                 if (lc->previewstream!=NULL) {
1056                         video_preview_stop(lc->previewstream);
1057                         lc->previewstream=NULL;
1058                 }
1059                 call->current_params.has_video=FALSE;
1060                 if (vstream && vstream->dir!=SalStreamInactive && vstream->port!=0) {
1061                         const char *addr=vstream->addr[0]!='\0' ? vstream->addr : call->resultdesc->addr;
1062                         call->video_profile=make_profile(call,call->resultdesc,vstream,&used_pt);
1063                         if (used_pt!=-1){
1064                                 VideoStreamDir dir=VideoStreamSendRecv;
1065                                 MSWebCam *cam=lc->video_conf.device;
1066                                 bool_t is_inactive=FALSE;
1067
1068                                 call->current_params.has_video=TRUE;
1069
1070                                 video_stream_set_sent_video_size(call->videostream,linphone_core_get_preferred_video_size(lc));
1071                                 video_stream_enable_self_view(call->videostream,lc->video_conf.selfview);
1072                                 if (lc->video_window_id!=0)
1073                                         video_stream_set_native_window_id(call->videostream,lc->video_window_id);
1074                                 if (lc->preview_window_id!=0)
1075                                         video_stream_set_native_preview_window_id (call->videostream,lc->preview_window_id);
1076                                 video_stream_use_preview_video_window (call->videostream,lc->use_preview_window);
1077
1078                                 if (vstream->dir==SalStreamSendOnly && lc->video_conf.capture ){
1079                                         cam=get_nowebcam_device();
1080                                         dir=VideoStreamSendOnly;
1081                                 }else if (vstream->dir==SalStreamRecvOnly && lc->video_conf.display ){
1082                                         dir=VideoStreamRecvOnly;
1083                                 }else if (vstream->dir==SalStreamSendRecv){
1084                                         if (lc->video_conf.display && lc->video_conf.capture)
1085                                                 dir=VideoStreamSendRecv;
1086                                         else if (lc->video_conf.display)
1087                                                 dir=VideoStreamRecvOnly;
1088                                         else
1089                                                 dir=VideoStreamSendOnly;
1090                                 }else{
1091                                         ms_warning("video stream is inactive.");
1092                                         /*either inactive or incompatible with local capabilities*/
1093                                         is_inactive=TRUE;
1094                                 }
1095                                 if (call->camera_active==FALSE || all_inputs_muted){
1096                                         cam=get_nowebcam_device();
1097                                 }
1098                                 if (!is_inactive){
1099                                         video_stream_set_direction (call->videostream, dir);
1100                                         video_stream_start(call->videostream,
1101                                                 call->video_profile, addr, vstream->port,
1102                                                 vstream->port+1,
1103                                                 used_pt, jitt_comp, cam);
1104                                         video_stream_set_rtcp_information(call->videostream, cname,tool);
1105                                 }
1106                         }else ms_warning("No video stream accepted.");
1107                 }else{
1108                         ms_warning("No valid video stream defined.");
1109                 }
1110         }
1111 #endif
1112         call->all_muted=all_inputs_muted;
1113         call->playing_ringbacktone=send_ringbacktone;
1114         call->up_bw=linphone_core_get_upload_bandwidth(lc);
1115
1116         if (ortp_zrtp_available()) {
1117                 OrtpZrtpParams params;
1118                 params.zid=get_zrtp_identifier(lc);
1119                 params.zid_file=lc->zrtp_secrets_cache;
1120                 OrtpZrtpUiCb cbs={0};
1121                 cbs.data=call;
1122                 cbs.encryption_changed=linphone_call_audiostream_encryption_changed;
1123                 cbs.sas_ready=linphone_call_audiostream_auth_token_ready;
1124                 params.ui_cbs=&cbs;
1125                 audio_stream_enable_zrtp(call->audiostream,&params);
1126         }
1127
1128         goto end;
1129         end:
1130                 ms_free(cname);
1131                 linphone_address_destroy(me);
1132 }
1133
1134 static void linphone_call_log_fill_stats(LinphoneCallLog *log, AudioStream *st){
1135         audio_stream_get_local_rtp_stats (st,&log->local_stats);
1136         log->quality=audio_stream_get_average_quality_rating(st);
1137 }
1138
1139 void linphone_call_stop_media_streams(LinphoneCall *call){
1140         if (call->audiostream!=NULL) {
1141                 if (call->audiostream->ec){
1142                         const char *state_str=NULL;
1143                         ms_filter_call_method(call->audiostream->ec,MS_ECHO_CANCELLER_GET_STATE_STRING,&state_str);
1144                         if (state_str){
1145                                 ms_message("Writing echo canceller state, %i bytes",strlen(state_str));
1146                                 lp_config_set_string(call->core->config,"sound","ec_state",state_str);
1147                         }
1148                 }
1149                 linphone_call_log_fill_stats (call->log,call->audiostream);
1150                 audio_stream_stop(call->audiostream);
1151                 call->audiostream=NULL;
1152         }
1153 #ifdef VIDEO_ENABLED
1154         if (call->videostream!=NULL){
1155                 video_stream_stop(call->videostream);
1156                 call->videostream=NULL;
1157         }
1158         ms_event_queue_skip(call->core->msevq);
1159
1160 #endif
1161         if (call->audio_profile){
1162                 rtp_profile_clear_all(call->audio_profile);
1163                 rtp_profile_destroy(call->audio_profile);
1164                 call->audio_profile=NULL;
1165         }
1166         if (call->video_profile){
1167                 rtp_profile_clear_all(call->video_profile);
1168                 rtp_profile_destroy(call->video_profile);
1169                 call->video_profile=NULL;
1170         }
1171 }
1172
1173
1174
1175 void linphone_call_enable_echo_cancellation(LinphoneCall *call, bool_t enable) {
1176         if (call!=NULL && call->audiostream!=NULL && call->audiostream->ec){
1177                 bool_t bypass_mode = !enable;
1178                 ms_filter_call_method(call->audiostream->ec,MS_ECHO_CANCELLER_SET_BYPASS_MODE,&bypass_mode);
1179         }
1180 }
1181 bool_t linphone_call_echo_cancellation_enabled(LinphoneCall *call) {
1182         if (call!=NULL && call->audiostream!=NULL && call->audiostream->ec){
1183                 bool_t val;
1184                 ms_filter_call_method(call->audiostream->ec,MS_ECHO_CANCELLER_GET_BYPASS_MODE,&val);
1185                 return !val;
1186         } else {
1187                 return linphone_core_echo_cancellation_enabled(call->core);
1188         }
1189 }
1190
1191 void linphone_call_enable_echo_limiter(LinphoneCall *call, bool_t val){
1192         if (call!=NULL && call->audiostream!=NULL ) {
1193                 if (val) {
1194                 const char *type=lp_config_get_string(call->core->config,"sound","el_type","mic");
1195                 if (strcasecmp(type,"mic")==0)
1196                         audio_stream_enable_echo_limiter(call->audiostream,ELControlMic);
1197                 else if (strcasecmp(type,"full")==0)
1198                         audio_stream_enable_echo_limiter(call->audiostream,ELControlFull);
1199                 } else {
1200                         audio_stream_enable_echo_limiter(call->audiostream,ELInactive);
1201                 }
1202         }
1203 }
1204
1205 bool_t linphone_call_echo_limiter_enabled(const LinphoneCall *call){
1206         if (call!=NULL && call->audiostream!=NULL ){
1207                 return call->audiostream->el_type !=ELInactive ;
1208         } else {
1209                 return linphone_core_echo_limiter_enabled(call->core);
1210         }
1211 }
1212
1213 /**
1214  * @addtogroup call_misc
1215  * @{
1216 **/
1217
1218 /**
1219  * Returns the measured sound volume played locally (received from remote)
1220  * It is expressed in dbm0.
1221 **/
1222 float linphone_call_get_play_volume(LinphoneCall *call){
1223         AudioStream *st=call->audiostream;
1224         if (st && st->volsend){
1225                 float vol=0;
1226                 ms_filter_call_method(st->volsend,MS_VOLUME_GET,&vol);
1227                 return vol;
1228
1229         }
1230         return LINPHONE_VOLUME_DB_LOWEST;
1231 }
1232
1233 /**
1234  * Returns the measured sound volume recorded locally (sent to remote)
1235  * It is expressed in dbm0.
1236 **/
1237 float linphone_call_get_record_volume(LinphoneCall *call){
1238         AudioStream *st=call->audiostream;
1239         if (st && st->volrecv){
1240                 float vol=0;
1241                 ms_filter_call_method(st->volrecv,MS_VOLUME_GET,&vol);
1242                 return vol;
1243
1244         }
1245         return LINPHONE_VOLUME_DB_LOWEST;
1246 }
1247
1248 /**
1249  * Obtain real-time quality rating of the call
1250  *
1251  * Based on local RTP statistics and RTCP feedback, a quality rating is computed and updated
1252  * during all the duration of the call. This function returns its value at the time of the function call.
1253  * It is expected that the rating is updated at least every 5 seconds or so.
1254  * The rating is a floating point number comprised between 0 and 5.
1255  *
1256  * 4-5 = good quality <br>
1257  * 3-4 = average quality <br>
1258  * 2-3 = poor quality <br>
1259  * 1-2 = very poor quality <br>
1260  * 0-1 = can't be worse, mostly unusable <br>
1261  *
1262  * @returns The function returns -1 if no quality measurement is available, for example if no
1263  * active audio stream exist. Otherwise it returns the quality rating.
1264 **/
1265 float linphone_call_get_current_quality(LinphoneCall *call){
1266         if (call->audiostream){
1267                 return audio_stream_get_quality_rating(call->audiostream);
1268         }
1269         return -1;
1270 }
1271
1272 /**
1273  * Returns call quality averaged over all the duration of the call.
1274  *
1275  * See linphone_call_get_current_quality() for more details about quality measurement.
1276 **/
1277 float linphone_call_get_average_quality(LinphoneCall *call){
1278         if (call->audiostream){
1279                 return audio_stream_get_average_quality_rating(call->audiostream);
1280         }
1281         return -1;
1282 }
1283
1284 /**
1285  * @}
1286 **/
1287
1288 static void display_bandwidth(RtpSession *as, RtpSession *vs){
1289         ms_message("bandwidth usage: audio=[d=%.1f,u=%.1f] video=[d=%.1f,u=%.1f] kbit/sec",
1290         (as!=NULL) ? (rtp_session_compute_recv_bandwidth(as)*1e-3) : 0,
1291         (as!=NULL) ? (rtp_session_compute_send_bandwidth(as)*1e-3) : 0,
1292         (vs!=NULL) ? (rtp_session_compute_recv_bandwidth(vs)*1e-3) : 0,
1293         (vs!=NULL) ? (rtp_session_compute_send_bandwidth(vs)*1e-3) : 0);
1294 }
1295
1296 static void linphone_core_disconnected(LinphoneCore *lc, LinphoneCall *call){
1297         char temp[256];
1298         char *from=NULL;
1299         if(call)
1300                 from = linphone_call_get_remote_address_as_string(call);
1301         if (from)
1302         {
1303                 snprintf(temp,sizeof(temp),"Remote end %s seems to have disconnected, the call is going to be closed.",from);
1304                 free(from);
1305         }
1306         else
1307         {
1308                 snprintf(temp,sizeof(temp),"Remote end seems to have disconnected, the call is going to be closed.");
1309         }
1310         if (lc->vtable.display_warning!=NULL)
1311                 lc->vtable.display_warning(lc,temp);
1312         linphone_core_terminate_call(lc,call);
1313 }
1314
1315 void linphone_call_background_tasks(LinphoneCall *call, bool_t one_second_elapsed){
1316         int disconnect_timeout = linphone_core_get_nortp_timeout(call->core);
1317         bool_t disconnected=FALSE;
1318
1319         if (call->state==LinphoneCallStreamsRunning && one_second_elapsed){
1320                 RtpSession *as=NULL,*vs=NULL;
1321                 float audio_load=0, video_load=0;
1322                 if (call->audiostream!=NULL){
1323                         as=call->audiostream->session;
1324                         if (call->audiostream->ticker)
1325                                 audio_load=ms_ticker_get_average_load(call->audiostream->ticker);
1326                 }
1327                 if (call->videostream!=NULL){
1328                         if (call->videostream->ticker)
1329                                 video_load=ms_ticker_get_average_load(call->videostream->ticker);
1330                         vs=call->videostream->session;
1331                 }
1332                 display_bandwidth(as,vs);
1333                 ms_message("Thread processing load: audio=%f\tvideo=%f",audio_load,video_load);
1334         }
1335 #ifdef VIDEO_ENABLED
1336         if (call->videostream!=NULL)
1337                 video_stream_iterate(call->videostream);
1338 #endif
1339         if (call->audiostream!=NULL)
1340                 audio_stream_iterate(call->audiostream);
1341         if (one_second_elapsed && call->audiostream!=NULL && disconnect_timeout>0 )
1342                 disconnected=!audio_stream_alive(call->audiostream,disconnect_timeout);
1343         if (disconnected)
1344                 linphone_core_disconnected(call->core,call);
1345 }
1346
1347 void linphone_call_log_completed(LinphoneCall *call){
1348         LinphoneCore *lc=call->core;
1349
1350         call->log->duration=time(NULL)-call->start_time;
1351
1352         if (call->log->status==LinphoneCallMissed){
1353                 char *info;
1354                 lc->missed_calls++;
1355                 info=ortp_strdup_printf(ngettext("You have missed %i call.",
1356                                          "You have missed %i calls.", lc->missed_calls),
1357                                 lc->missed_calls);
1358         if (lc->vtable.display_status!=NULL)
1359             lc->vtable.display_status(lc,info);
1360                 ms_free(info);
1361         }
1362         lc->call_logs=ms_list_prepend(lc->call_logs,(void *)call->log);
1363         if (ms_list_size(lc->call_logs)>lc->max_call_logs){
1364                 MSList *elem,*prevelem=NULL;
1365                 /*find the last element*/
1366                 for(elem=lc->call_logs;elem!=NULL;elem=elem->next){
1367                         prevelem=elem;
1368                 }
1369                 elem=prevelem;
1370                 linphone_call_log_destroy((LinphoneCallLog*)elem->data);
1371                 lc->call_logs=ms_list_remove_link(lc->call_logs,elem);
1372         }
1373         if (lc->vtable.call_log_updated!=NULL){
1374                 lc->vtable.call_log_updated(lc,call->log);
1375         }
1376         call_logs_write_to_config_file(lc);
1377 }
1378
1379