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

   1
   2 /*
   3 linphone
   4 Copyright (C) 2010  Belledonne Communications SARL
   5  (simon.morlat@linphone.org)
   6
   7 This program is free software; you can redistribute it and/or
   8 modify it under the terms of the GNU General Public License
   9 as published by the Free Software Foundation; either version 2
  10 of the License, or (at your option) any later version.
  11
  12 This program is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with this program; if not, write to the Free Software
  19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  20 */
  21 #ifdef WIN32
  22 #include <time.h>
  23 #endif
  24 #include "linphonecore.h"
  25 #include "sipsetup.h"
  26 #include "lpconfig.h"
  27 #include "private.h"
  28 #include <ortp/event.h>
  29 #include <ortp/b64.h>
  30
  31
  32 #include "mediastreamer2/mediastream.h"
  33 #include "mediastreamer2/msvolume.h"
  34 #include "mediastreamer2/msequalizer.h"
  35 #include "mediastreamer2/msfileplayer.h"
  36 #include "mediastreamer2/msjpegwriter.h"
  37 #include "mediastreamer2/mseventqueue.h"
  38 #include "mediastreamer2/mssndcard.h"
  39
  40 #ifdef VIDEO_ENABLED
  41 static MSWebCam *get_nowebcam_device(){
  42         return ms_web_cam_manager_get_cam(ms_web_cam_manager_get(),"StaticImage: Static picture");
  43 }
  44 #endif
  45
  46 static bool_t generate_b64_crypto_key(int key_length, char* key_out) {
  47         int b64_size;
  48         uint8_t* tmp = (uint8_t*) malloc(key_length);
  49         if (ortp_crypto_get_random(tmp, key_length)!=0) {
  50                 ms_error("Failed to generate random key");
  51                 free(tmp);
  52                 return FALSE;
  53         }
  54
  55         b64_size = b64_encode((const char*)tmp, key_length, NULL, 0);
  56         if (b64_size == 0) {
  57                 ms_error("Failed to b64 encode key");
  58                 free(tmp);
  59                 return FALSE;
  60         }
  61         key_out[b64_size] = '\0';
  62         b64_encode((const char*)tmp, key_length, key_out, 40);
  63         free(tmp);
  64         return TRUE;
  65 }
  66
  67 LinphoneCore *linphone_call_get_core(const LinphoneCall *call){
  68         return call->core;
  69 }
  70
  71 const char* linphone_call_get_authentication_token(LinphoneCall *call){
  72         return call->auth_token;
  73 }
  74
  75 bool_t linphone_call_get_authentication_token_verified(LinphoneCall *call){
  76         return call->auth_token_verified;
  77 }
  78
  79 static bool_t linphone_call_are_all_streams_encrypted(LinphoneCall *call) {
  80         // Check ZRTP encryption in audiostream
  81         if (!call->audiostream_encrypted) {
  82                 return FALSE;
  83         }
  84
  85 #ifdef VIDEO_ENABLED
  86         // If video enabled, check ZRTP encryption in videostream
  87         const LinphoneCallParams *params=linphone_call_get_current_params(call);
  88         if (params->has_video && !call->videostream_encrypted) {
  89                 return FALSE;
  90         }
  91 #endif
  92
  93         return TRUE;
  94 }
  95
  96 void propagate_encryption_changed(LinphoneCall *call){
  97         LinphoneCore *lc=call->core;
  98         if (!linphone_call_are_all_streams_encrypted(call)) {
  99                 ms_message("Some streams are not encrypted");
 100                 call->current_params.media_encryption=LinphoneMediaEncryptionNone;
 101                 if (lc->vtable.call_encryption_changed)
 102                         lc->vtable.call_encryption_changed(call->core, call, FALSE, call->auth_token);
 103         } else {
 104                 ms_message("All streams are encrypted");
 105                 call->current_params.media_encryption=LinphoneMediaEncryptionZRTP;
 106                 if (lc->vtable.call_encryption_changed)
 107                         lc->vtable.call_encryption_changed(call->core, call, TRUE, call->auth_token);
 108         }
 109 }
 110
 111 #ifdef VIDEO_ENABLED
 112 static void linphone_call_videostream_encryption_changed(void *data, bool_t encrypted){
 113         ms_message("Video stream is %s", encrypted ? "encrypted" : "not encrypted");
 114
 115         LinphoneCall *call = (LinphoneCall *)data;
 116         call->videostream_encrypted=encrypted;
 117         propagate_encryption_changed(call);
 118 }
 119 #endif
 120
 121 static void linphone_call_audiostream_encryption_changed(void *data, bool_t encrypted) {
 122         char status[255]={0};
 123         ms_message("Audio stream is %s ", encrypted ? "encrypted" : "not encrypted");
 124
 125         LinphoneCall *call = (LinphoneCall *)data;
 126         call->audiostream_encrypted=encrypted;
 127
 128         if (encrypted && call->core->vtable.display_status != NULL) {
 129                 snprintf(status,sizeof(status)-1,_("Authentication token is %s"),call->auth_token);
 130                  call->core->vtable.display_status(call->core, status);
 131         }
 132
 133         propagate_encryption_changed(call);
 134
 135
 136 #ifdef VIDEO_ENABLED
 137         // Enable video encryption
 138         const LinphoneCallParams *params=linphone_call_get_current_params(call);
 139         if (params->has_video) {
 140                 ms_message("Trying to enable encryption on video stream");
 141                 OrtpZrtpParams params;
 142                 params.zid_file=NULL; //unused
 143                 video_stream_enable_zrtp(call->videostream,call->audiostream,&params);
 144         }
 145 #endif
 146 }
 147
 148
 149 static void linphone_call_audiostream_auth_token_ready(void *data, const char* auth_token, bool_t verified) {
 150         LinphoneCall *call=(LinphoneCall *)data;
 151         if (call->auth_token != NULL)
 152                 ms_free(call->auth_token);
 153
 154         call->auth_token=ms_strdup(auth_token);
 155         call->auth_token_verified=verified;
 156
 157         ms_message("Authentication token is %s (%s)", auth_token, verified?"verified":"unverified");
 158 }
 159
 160 void linphone_call_set_authentication_token_verified(LinphoneCall *call, bool_t verified){
 161         if (call->audiostream==NULL){
 162                 ms_error("linphone_call_set_authentication_token_verified(): No audio stream");
 163         }
 164         if (call->audiostream->ortpZrtpContext==NULL){
 165                 ms_error("linphone_call_set_authentication_token_verified(): No zrtp context.");
 166         }
 167         if (!call->auth_token_verified && verified){
 168                 ortp_zrtp_sas_verified(call->audiostream->ortpZrtpContext);
 169         }else if (call->auth_token_verified && !verified){
 170                 ortp_zrtp_sas_reset_verified(call->audiostream->ortpZrtpContext);
 171         }
 172         call->auth_token_verified=verified;
 173         propagate_encryption_changed(call);
 174 }
 175
 176 static MSList *make_codec_list(LinphoneCore *lc, const MSList *codecs, int bandwidth_limit,int* max_sample_rate){
 177         MSList *l=NULL;
 178         const MSList *it;
 179         if (max_sample_rate) *max_sample_rate=0;
 180         for(it=codecs;it!=NULL;it=it->next){
 181                 PayloadType *pt=(PayloadType*)it->data;
 182                 if (pt->flags & PAYLOAD_TYPE_ENABLED){
 183                         if (bandwidth_limit>0 && !linphone_core_is_payload_type_usable_for_bandwidth(lc,pt,bandwidth_limit)){
 184                                 ms_message("Codec %s/%i eliminated because of audio bandwidth constraint.",pt->mime_type,pt->clock_rate);
 185                                 continue;
 186                         }
 187                         if (linphone_core_check_payload_type_usability(lc,pt)){
 188                                 l=ms_list_append(l,payload_type_clone(pt));
 189                                 if (max_sample_rate && payload_type_get_rate(pt)>*max_sample_rate) *max_sample_rate=payload_type_get_rate(pt);
 190                         }
 191                 }
 192         }
 193         return l;
 194 }
 195
 196 static void update_media_description_from_stun(SalMediaDescription *md, const StunCandidate *ac, const StunCandidate *vc){
 197         if (ac->port!=0){
 198                 strcpy(md->streams[0].rtp_addr,ac->addr);
 199                 md->streams[0].rtp_port=ac->port;
 200                 if ((ac->addr[0]!='\0' && vc->addr[0]!='\0' && strcmp(ac->addr,vc->addr)==0) || md->nstreams==1){
 201                         strcpy(md->addr,ac->addr);
 202                 }
 203         }
 204         if (vc->port!=0){
 205                 strcpy(md->streams[1].rtp_addr,vc->addr);
 206                 md->streams[1].rtp_port=vc->port;
 207         }
 208
 209 }
 210
 211
 212 static SalMediaDescription *_create_local_media_description(LinphoneCore *lc, LinphoneCall *call, unsigned int session_id, unsigned int session_ver){
 213         MSList *l;
 214         PayloadType *pt;
 215         int i;
 216         const char *me=linphone_core_get_identity(lc);
 217         LinphoneAddress *addr=linphone_address_new(me);
 218         const char *username=linphone_address_get_username (addr);
 219         SalMediaDescription *md=sal_media_description_new();
 220
 221         if (call->ping_time>0) {
 222                 linphone_core_adapt_to_network(lc,call->ping_time,&call->params);
 223         }
 224
 225         md->session_id=session_id;
 226         md->session_ver=session_ver;
 227         md->nstreams=1;
 228         strncpy(md->addr,call->localip,sizeof(md->addr));
 229         strncpy(md->username,username,sizeof(md->username));
 230
 231         if (call->params.down_bw)
 232                 md->bandwidth=call->params.down_bw;
 233         else md->bandwidth=linphone_core_get_download_bandwidth(lc);
 234
 235         /*set audio capabilities */
 236         strncpy(md->streams[0].rtp_addr,call->localip,sizeof(md->streams[0].rtp_addr));
 237         strncpy(md->streams[0].rtcp_addr,call->localip,sizeof(md->streams[0].rtcp_addr));
 238         md->streams[0].rtp_port=call->audio_port;
 239         md->streams[0].rtcp_port=call->audio_port+1;
 240         md->streams[0].proto=(call->params.media_encryption == LinphoneMediaEncryptionSRTP) ?
 241                 SalProtoRtpSavp : SalProtoRtpAvp;
 242         md->streams[0].type=SalAudio;
 243         if (call->params.down_ptime)
 244                 md->streams[0].ptime=call->params.down_ptime;
 245         else
 246                 md->streams[0].ptime=linphone_core_get_download_ptime(lc);
 247         l=make_codec_list(lc,lc->codecs_conf.audio_codecs,call->params.audio_bw,&md->streams[0].max_rate);
 248         pt=payload_type_clone(rtp_profile_get_payload_from_mime(&av_profile,"telephone-event"));
 249         l=ms_list_append(l,pt);
 250         md->streams[0].payloads=l;
 251
 252
 253
 254         if (call->params.has_video){
 255                 md->nstreams++;
 256                 md->streams[1].rtp_port=call->video_port;
 257                 md->streams[1].rtcp_port=call->video_port+1;
 258                 md->streams[1].proto=md->streams[0].proto;
 259                 md->streams[1].type=SalVideo;
 260                 l=make_codec_list(lc,lc->codecs_conf.video_codecs,0,NULL);
 261                 md->streams[1].payloads=l;
 262         }
 263
 264         for(i=0; i<md->nstreams; i++) {
 265                 if (md->streams[i].proto == SalProtoRtpSavp) {
 266                         md->streams[i].crypto[0].tag = 1;
 267                         md->streams[i].crypto[0].algo = AES_128_SHA1_80;
 268                         if (!generate_b64_crypto_key(30, md->streams[i].crypto[0].master_key))
 269                                 md->streams[i].crypto[0].algo = 0;
 270                         md->streams[i].crypto[1].tag = 2;
 271                         md->streams[i].crypto[1].algo = AES_128_SHA1_32;
 272                         if (!generate_b64_crypto_key(30, md->streams[i].crypto[1].master_key))
 273                                 md->streams[i].crypto[1].algo = 0;
 274                         md->streams[i].crypto[2].algo = 0;
 275                 }
 276         }
 277         update_media_description_from_stun(md,&call->ac,&call->vc);
 278         if (call->ice_session != NULL) {
 279                 linphone_core_update_local_media_description_from_ice(md, call->ice_session);
 280                 linphone_core_update_ice_state_in_call_stats(call);
 281         }
 282         linphone_address_destroy(addr);
 283         return md;
 284 }
 285
 286 void update_local_media_description(LinphoneCore *lc, LinphoneCall *call){
 287         SalMediaDescription *md=call->localdesc;
 288         if (md== NULL) {
 289                 call->localdesc = create_local_media_description(lc,call);
 290         } else {
 291                 call->localdesc = _create_local_media_description(lc,call,md->session_id,md->session_ver+1);
 292                 sal_media_description_unref(md);
 293         }
 294 }
 295
 296 SalMediaDescription *create_local_media_description(LinphoneCore *lc, LinphoneCall *call){
 297         unsigned int id=rand() & 0xfff;
 298         return _create_local_media_description(lc,call,id,id);
 299 }
 300
 301 static int find_port_offset(LinphoneCore *lc, SalStreamType type){
 302         int offset;
 303         MSList *elem;
 304         int tried_port;
 305         int existing_port;
 306         bool_t already_used=FALSE;
 307         for(offset=0;offset<100;offset+=2){
 308                 switch (type) {
 309                         default:
 310                         case SalAudio:
 311                                 tried_port=linphone_core_get_audio_port (lc)+offset;
 312                                 break;
 313                         case SalVideo:
 314                                 tried_port=linphone_core_get_video_port (lc)+offset;
 315                                 break;
 316                 }
 317                 already_used=FALSE;
 318                 for(elem=lc->calls;elem!=NULL;elem=elem->next){
 319                         LinphoneCall *call=(LinphoneCall*)elem->data;
 320                         switch (type) {
 321                                 default:
 322                                 case SalAudio:
 323                                         existing_port = call->audio_port;
 324                                         break;
 325                                 case SalVideo:
 326                                         existing_port = call->video_port;
 327                                         break;
 328                         }
 329                         if (existing_port==tried_port) {
 330                                 already_used=TRUE;
 331                                 break;
 332                         }
 333                 }
 334                 if (!already_used) break;
 335         }
 336         if (offset==100){
 337                 ms_error("Could not find any free port !");
 338                 return -1;
 339         }
 340         return offset;
 341 }
 342
 343 static int select_random_port(LinphoneCore *lc, SalStreamType type) {
 344         MSList *elem;
 345         int nb_tries;
 346         int tried_port = 0;
 347         int existing_port = 0;
 348         int min_port = 0, max_port = 0;
 349         bool_t already_used = FALSE;
 350
 351         switch (type) {
 352                 default:
 353                 case SalAudio:
 354                         linphone_core_get_audio_port_range(lc, &min_port, &max_port);
 355                         break;
 356                 case SalVideo:
 357                         linphone_core_get_video_port_range(lc, &min_port, &max_port);
 358                         break;
 359         }
 360         tried_port = (rand() % (max_port - min_port) + min_port) & ~0x1;
 361         if (tried_port < min_port) tried_port = min_port + 2;
 362         for (nb_tries = 0; nb_tries < 100; nb_tries++) {
 363                 for (elem = lc->calls; elem != NULL; elem = elem->next) {
 364                         LinphoneCall *call = (LinphoneCall *)elem->data;
 365                         switch (type) {
 366                                 default:
 367                                 case SalAudio:
 368                                         existing_port = call->audio_port;
 369                                         break;
 370                                 case SalVideo:
 371                                         existing_port = call->video_port;
 372                                         break;
 373                         }
 374                         if (existing_port == tried_port) {
 375                                 already_used = TRUE;
 376                                 break;
 377                         }
 378                 }
 379                 if (!already_used) break;
 380         }
 381         if (nb_tries == 100) {
 382                 ms_error("Could not find any free port!");
 383                 return -1;
 384         }
 385         return tried_port;
 386 }
 387
 388 static void linphone_call_init_common(LinphoneCall *call, LinphoneAddress *from, LinphoneAddress *to){
 389         int port_offset;
 390         int min_port, max_port;
 391         call->magic=linphone_call_magic;
 392         call->refcnt=1;
 393         call->state=LinphoneCallIdle;
 394         call->transfer_state = LinphoneCallIdle;
 395         call->start_time=time(NULL);
 396         call->media_start_time=0;
 397         call->log=linphone_call_log_new(call, from, to);
 398         call->owns_call_log=TRUE;
 399         linphone_core_notify_all_friends(call->core,LinphoneStatusOnThePhone);
 400         linphone_core_get_audio_port_range(call->core, &min_port, &max_port);
 401         if (min_port == max_port) {
 402                 /* Used fixed RTP audio port. */
 403                 port_offset=find_port_offset (call->core, SalAudio);
 404                 if (port_offset==-1) return;
 405                 call->audio_port=linphone_core_get_audio_port(call->core)+port_offset;
 406         } else {
 407                 /* Select random RTP audio port in the specified range. */
 408                 call->audio_port = select_random_port(call->core, SalAudio);
 409         }
 410         linphone_core_get_video_port_range(call->core, &min_port, &max_port);
 411         if (min_port == max_port) {
 412                 /* Used fixed RTP video port. */
 413                 port_offset=find_port_offset (call->core, SalVideo);
 414                 if (port_offset==-1) return;
 415                 call->video_port=linphone_core_get_video_port(call->core)+port_offset;
 416         } else {
 417                 /* Select random RTP video port in the specified range. */
 418                 call->video_port = select_random_port(call->core, SalVideo);
 419         }
 420         linphone_call_init_stats(&call->stats[LINPHONE_CALL_STATS_AUDIO], LINPHONE_CALL_STATS_AUDIO);
 421         linphone_call_init_stats(&call->stats[LINPHONE_CALL_STATS_VIDEO], LINPHONE_CALL_STATS_VIDEO);
 422 }
 423
 424 void linphone_call_init_stats(LinphoneCallStats *stats, int type) {
 425         stats->type = type;
 426         stats->received_rtcp = NULL;
 427         stats->sent_rtcp = NULL;
 428         stats->ice_state = LinphoneIceStateNotActivated;
 429 }
 430
 431
 432 static void discover_mtu(LinphoneCore *lc, const char *remote){
 433         int mtu;
 434         if (lc->net_conf.mtu==0 ){
 435                 /*attempt to discover mtu*/
 436                 mtu=ms_discover_mtu(remote);
 437                 if (mtu>0){
 438                         ms_set_mtu(mtu);
 439                         ms_message("Discovered mtu is %i, RTP payload max size is %i",
 440                                 mtu, ms_get_payload_max_size());
 441                 }
 442         }
 443 }
 444
 445 LinphoneCall * linphone_call_new_outgoing(struct _LinphoneCore *lc, LinphoneAddress *from, LinphoneAddress *to, const LinphoneCallParams *params)
 446 {
 447         LinphoneCall *call=ms_new0(LinphoneCall,1);
 448         call->dir=LinphoneCallOutgoing;
 449         call->op=sal_op_new(lc->sal);
 450         sal_op_set_user_pointer(call->op,call);
 451         call->core=lc;
 452         linphone_core_get_local_ip(lc,linphone_address_get_domain(to),call->localip);
 453         linphone_call_init_common(call,from,to);
 454         call->params=*params;
 455         if (linphone_core_get_firewall_policy(call->core) == LinphonePolicyUseIce) {
 456                 call->ice_session = ice_session_new();
 457                 ice_session_set_role(call->ice_session, IR_Controlling);
 458         }
 459         if (linphone_core_get_firewall_policy(call->core) == LinphonePolicyUseStun) {
 460                 call->ping_time=linphone_core_run_stun_tests(call->core,call);
 461         }
 462         call->camera_active=params->has_video;
 463
 464         discover_mtu(lc,linphone_address_get_domain (to));
 465         if (params->referer){
 466                 sal_call_set_referer(call->op,params->referer->op);
 467                 call->referer=linphone_call_ref(params->referer);
 468         }
 469         return call;
 470 }
 471
 472 LinphoneCall * linphone_call_new_incoming(LinphoneCore *lc, LinphoneAddress *from, LinphoneAddress *to, SalOp *op){
 473         LinphoneCall *call=ms_new0(LinphoneCall,1);
 474         char *from_str;
 475
 476         call->dir=LinphoneCallIncoming;
 477         sal_op_set_user_pointer(op,call);
 478         call->op=op;
 479         call->core=lc;
 480
 481         if (lc->sip_conf.ping_with_options){
 482                 /*the following sends an option request back to the caller so that
 483                  we get a chance to discover our nat'd address before answering.*/
 484                 call->ping_op=sal_op_new(lc->sal);
 485                 from_str=linphone_address_as_string_uri_only(from);
 486                 sal_op_set_route(call->ping_op,sal_op_get_network_origin(op));
 487                 sal_op_set_user_pointer(call->ping_op,call);
 488                 sal_ping(call->ping_op,linphone_core_find_best_identity(lc,from,NULL),from_str);
 489                 ms_free(from_str);
 490         }
 491
 492         linphone_address_clean(from);
 493         linphone_core_get_local_ip(lc,linphone_address_get_domain(from),call->localip);
 494         linphone_call_init_common(call, from, to);
 495         call->log->call_id=ms_strdup(sal_op_get_call_id(op)); /*must be known at that time*/
 496         linphone_core_init_default_params(lc, &call->params);
 497         call->params.has_video &= !!lc->video_policy.automatically_accept;
 498         call->params.has_video &= linphone_core_media_description_contains_video_stream(sal_call_get_remote_media_description(op));
 499         switch (linphone_core_get_firewall_policy(call->core)) {
 500                 case LinphonePolicyUseIce:
 501                         call->ice_session = ice_session_new();
 502                         ice_session_set_role(call->ice_session, IR_Controlled);
 503                         linphone_core_update_ice_from_remote_media_description(call, sal_call_get_remote_media_description(op));
 504                         if (call->ice_session != NULL) {
 505                                 linphone_call_init_media_streams(call);
 506                                 linphone_call_start_media_streams_for_ice_gathering(call);
 507                                 if (linphone_core_gather_ice_candidates(call->core,call)<0) {
 508                                         /* Ice candidates gathering failed, proceed with the call anyway. */
 509                                         linphone_call_delete_ice_session(call);
 510                                         linphone_call_stop_media_streams_for_ice_gathering(call);
 511                                 }
 512                         }
 513                         break;
 514                 case LinphonePolicyUseStun:
 515                         call->ping_time=linphone_core_run_stun_tests(call->core,call);
 516                         /* No break to also destroy ice session in this case. */
 517                 default:
 518                         break;
 519         }
 520         call->camera_active=call->params.has_video;
 521
 522         discover_mtu(lc,linphone_address_get_domain(from));
 523         return call;
 524 }
 525
 526 /* this function is called internally to get rid of a call.
 527  It performs the following tasks:
 528  - remove the call from the internal list of calls
 529  - update the call logs accordingly
 530 */
 531
 532 static void linphone_call_set_terminated(LinphoneCall *call){
 533         LinphoneCore *lc=call->core;
 534
 535         linphone_core_update_allocated_audio_bandwidth(lc);
 536
 537         call->owns_call_log=FALSE;
 538         linphone_call_log_completed(call);
 539
 540
 541         if (call == lc->current_call){
 542                 ms_message("Resetting the current call");
 543                 lc->current_call=NULL;
 544         }
 545
 546         if (linphone_core_del_call(lc,call) != 0){
 547                 ms_error("Could not remove the call from the list !!!");
 548         }
 549
 550         if (ms_list_size(lc->calls)==0)
 551                 linphone_core_notify_all_friends(lc,lc->presence_mode);
 552
 553         linphone_core_conference_check_uninit(lc);
 554         if (call->ringing_beep){
 555                 linphone_core_stop_dtmf(lc);
 556                 call->ringing_beep=FALSE;
 557         }
 558         if (call->referer){
 559                 linphone_call_unref(call->referer);
 560                 call->referer=NULL;
 561         }
 562 }
 563
 564 void linphone_call_fix_call_parameters(LinphoneCall *call){
 565         call->params.has_video=call->current_params.has_video;
 566         call->params.media_encryption=call->current_params.media_encryption;
 567 }
 568
 569 const char *linphone_call_state_to_string(LinphoneCallState cs){
 570         switch (cs){
 571                 case LinphoneCallIdle:
 572                         return "LinphoneCallIdle";
 573                 case LinphoneCallIncomingReceived:
 574                         return "LinphoneCallIncomingReceived";
 575                 case LinphoneCallOutgoingInit:
 576                         return "LinphoneCallOutgoingInit";
 577                 case LinphoneCallOutgoingProgress:
 578                         return "LinphoneCallOutgoingProgress";
 579                 case LinphoneCallOutgoingRinging:
 580                         return "LinphoneCallOutgoingRinging";
 581                 case LinphoneCallOutgoingEarlyMedia:
 582                         return "LinphoneCallOutgoingEarlyMedia";
 583                 case LinphoneCallConnected:
 584                         return "LinphoneCallConnected";
 585                 case LinphoneCallStreamsRunning:
 586                         return "LinphoneCallStreamsRunning";
 587                 case LinphoneCallPausing:
 588                         return "LinphoneCallPausing";
 589                 case LinphoneCallPaused:
 590                         return "LinphoneCallPaused";
 591                 case LinphoneCallResuming:
 592                         return "LinphoneCallResuming";
 593                 case LinphoneCallRefered:
 594                         return "LinphoneCallRefered";
 595                 case LinphoneCallError:
 596                         return "LinphoneCallError";
 597                 case LinphoneCallEnd:
 598                         return "LinphoneCallEnd";
 599                 case LinphoneCallPausedByRemote:
 600                         return "LinphoneCallPausedByRemote";
 601                 case LinphoneCallUpdatedByRemote:
 602                         return "LinphoneCallUpdatedByRemote";
 603                 case LinphoneCallIncomingEarlyMedia:
 604                         return "LinphoneCallIncomingEarlyMedia";
 605                 case LinphoneCallUpdating:
 606                         return "LinphoneCallUpdating";
 607                 case LinphoneCallReleased:
 608                         return "LinphoneCallReleased";
 609         }
 610         return "undefined state";
 611 }
 612
 613 void linphone_call_set_state(LinphoneCall *call, LinphoneCallState cstate, const char *message){
 614         LinphoneCore *lc=call->core;
 615
 616         if (call->state!=cstate){
 617                 if (call->state==LinphoneCallEnd || call->state==LinphoneCallError){
 618                         if (cstate!=LinphoneCallReleased){
 619                                 ms_warning("Spurious call state change from %s to %s, ignored.",linphone_call_state_to_string(call->state),
 620                                    linphone_call_state_to_string(cstate));
 621                                 return;
 622                         }
 623                 }
 624                 ms_message("Call %p: moving from state %s to %s",call,linphone_call_state_to_string(call->state),
 625                            linphone_call_state_to_string(cstate));
 626                 if (cstate!=LinphoneCallRefered){
 627                         /*LinphoneCallRefered is rather an event, not a state.
 628                          Indeed it does not change the state of the call (still paused or running)*/
 629                         call->state=cstate;
 630                 }
 631                 if (cstate==LinphoneCallEnd || cstate==LinphoneCallError){
 632                         switch(call->reason){
 633                                 case LinphoneReasonDeclined:
 634                                         call->log->status=LinphoneCallDeclined;
 635                                         break;
 636                                 case LinphoneReasonNotAnswered:
 637                                         call->log->status=LinphoneCallMissed;
 638                                 break;
 639                                 default:
 640                                 break;
 641                         }
 642                         linphone_call_set_terminated (call);
 643                 }
 644                 if (cstate == LinphoneCallConnected) {
 645                         call->log->status=LinphoneCallSuccess;
 646                         call->media_start_time=time(NULL);
 647                 }
 648
 649                 if (lc->vtable.call_state_changed)
 650                         lc->vtable.call_state_changed(lc,call,cstate,message);
 651                 if (cstate==LinphoneCallReleased){
 652                         if (call->op!=NULL) {
 653                                 /* so that we cannot have anymore upcalls for SAL
 654                                  concerning this call*/
 655                                 sal_op_release(call->op);
 656                                 call->op=NULL;
 657                         }
 658                         linphone_call_unref(call);
 659                 }
 660         }
 661 }
 662
 663 static void linphone_call_destroy(LinphoneCall *obj)
 664 {
 665         linphone_call_delete_ice_session(obj);
 666         if (obj->op!=NULL) {
 667                 sal_op_release(obj->op);
 668                 obj->op=NULL;
 669         }
 670         if (obj->resultdesc!=NULL) {
 671                 sal_media_description_unref(obj->resultdesc);
 672                 obj->resultdesc=NULL;
 673         }
 674         if (obj->localdesc!=NULL) {
 675                 sal_media_description_unref(obj->localdesc);
 676                 obj->localdesc=NULL;
 677         }
 678         if (obj->ping_op) {
 679                 sal_op_release(obj->ping_op);
 680         }
 681         if (obj->refer_to){
 682                 ms_free(obj->refer_to);
 683         }
 684         if (obj->owns_call_log)
 685                 linphone_call_log_destroy(obj->log);
 686         if (obj->auth_token) {
 687                 ms_free(obj->auth_token);
 688         }
 689
 690         ms_free(obj);
 691 }
 692
 693 /**
 694  * @addtogroup call_control
 695  * @{
 696 **/
 697
 698 /**
 699  * Increments the call 's reference count.
 700  * An application that wishes to retain a pointer to call object
 701  * must use this function to unsure the pointer remains
 702  * valid. Once the application no more needs this pointer,
 703  * it must call linphone_call_unref().
 704 **/
 705 LinphoneCall * linphone_call_ref(LinphoneCall *obj){
 706         obj->refcnt++;
 707         return obj;
 708 }
 709
 710 /**
 711  * Decrements the call object reference count.
 712  * See linphone_call_ref().
 713 **/
 714 void linphone_call_unref(LinphoneCall *obj){
 715         obj->refcnt--;
 716         if (obj->refcnt==0){
 717                 linphone_call_destroy(obj);
 718         }
 719 }
 720
 721 /**
 722  * Returns current parameters associated to the call.
 723 **/
 724 const LinphoneCallParams * linphone_call_get_current_params(const LinphoneCall *call){
 725         return &call->current_params;
 726 }
 727
 728 static bool_t is_video_active(const SalStreamDescription *sd){
 729         return sd->rtp_port!=0 && sd->dir!=SalStreamInactive;
 730 }
 731
 732 /**
 733  * Returns call parameters proposed by remote.
 734  *
 735  * This is useful when receiving an incoming call, to know whether the remote party
 736  * supports video, encryption or whatever.
 737 **/
 738 const LinphoneCallParams * linphone_call_get_remote_params(LinphoneCall *call){
 739         LinphoneCallParams *cp=&call->remote_params;
 740         memset(cp,0,sizeof(*cp));
 741         if (call->op){
 742                 SalMediaDescription *md=sal_call_get_remote_media_description(call->op);
 743                 if (md){
 744                         SalStreamDescription *asd,*vsd,*secure_asd,*secure_vsd;
 745
 746                         asd=sal_media_description_find_stream(md,SalProtoRtpAvp,SalAudio);
 747                         vsd=sal_media_description_find_stream(md,SalProtoRtpAvp,SalVideo);
 748                         secure_asd=sal_media_description_find_stream(md,SalProtoRtpSavp,SalAudio);
 749                         secure_vsd=sal_media_description_find_stream(md,SalProtoRtpSavp,SalVideo);
 750                         if (secure_vsd){
 751                                 cp->has_video=is_video_active(secure_vsd);
 752                                 if (secure_asd || asd==NULL)
 753                                         cp->media_encryption=LinphoneMediaEncryptionSRTP;
 754                         }else if (vsd){
 755                                 cp->has_video=is_video_active(vsd);
 756                         }
 757                         return cp;
 758                 }
 759         }
 760         return NULL;
 761 }
 762
 763 /**
 764  * Returns the remote address associated to this call
 765  *
 766 **/
 767 const LinphoneAddress * linphone_call_get_remote_address(const LinphoneCall *call){
 768         return call->dir==LinphoneCallIncoming ? call->log->from : call->log->to;
 769 }
 770
 771 /**
 772  * Returns the remote address associated to this call as a string.
 773  *
 774  * The result string must be freed by user using ms_free().
 775 **/
 776 char *linphone_call_get_remote_address_as_string(const LinphoneCall *call){
 777         return linphone_address_as_string(linphone_call_get_remote_address(call));
 778 }
 779
 780 /**
 781  * Retrieves the call's current state.
 782 **/
 783 LinphoneCallState linphone_call_get_state(const LinphoneCall *call){
 784         return call->state;
 785 }
 786
 787 /**
 788  * Returns the reason for a call termination (either error or normal termination)
 789 **/
 790 LinphoneReason linphone_call_get_reason(const LinphoneCall *call){
 791         return call->reason;
 792 }
 793
 794 /**
 795  * Get the user_pointer in the LinphoneCall
 796  *
 797  * @ingroup call_control
 798  *
 799  * return user_pointer an opaque user pointer that can be retrieved at any time
 800 **/
 801 void *linphone_call_get_user_pointer(LinphoneCall *call)
 802 {
 803         return call->user_pointer;
 804 }
 805
 806 /**
 807  * Set the user_pointer in the LinphoneCall
 808  *
 809  * @ingroup call_control
 810  *
 811  * the user_pointer is an opaque user pointer that can be retrieved at any time in the LinphoneCall
 812 **/
 813 void linphone_call_set_user_pointer(LinphoneCall *call, void *user_pointer)
 814 {
 815         call->user_pointer = user_pointer;
 816 }
 817
 818 /**
 819  * Returns the call log associated to this call.
 820 **/
 821 LinphoneCallLog *linphone_call_get_call_log(const LinphoneCall *call){
 822         return call->log;
 823 }
 824
 825 /**
 826  * Returns the refer-to uri (if the call was transfered).
 827 **/
 828 const char *linphone_call_get_refer_to(const LinphoneCall *call){
 829         return call->refer_to;
 830 }
 831
 832 /**
 833  * Returns direction of the call (incoming or outgoing).
 834 **/
 835 LinphoneCallDir linphone_call_get_dir(const LinphoneCall *call){
 836         return call->log->dir;
 837 }
 838
 839 /**
 840  * Returns the far end's user agent description string, if available.
 841 **/
 842 const char *linphone_call_get_remote_user_agent(LinphoneCall *call){
 843         if (call->op){
 844                 return sal_op_get_remote_ua (call->op);
 845         }
 846         return NULL;
 847 }
 848
 849 /**
 850  * Returns true if this calls has received a transfer that has not been
 851  * executed yet.
 852  * Pending transfers are executed when this call is being paused or closed,
 853  * locally or by remote endpoint.
 854  * If the call is already paused while receiving the transfer request, the
 855  * transfer immediately occurs.
 856 **/
 857 bool_t linphone_call_has_transfer_pending(const LinphoneCall *call){
 858         return call->refer_pending;
 859 }
 860
 861 /**
 862  * Returns call's duration in seconds.
 863 **/
 864 int linphone_call_get_duration(const LinphoneCall *call){
 865         if (call->media_start_time==0) return 0;
 866         return time(NULL)-call->media_start_time;
 867 }
 868
 869 /**
 870  * Returns the call object this call is replacing, if any.
 871  * Call replacement can occur during call transfers.
 872  * By default, the core automatically terminates the replaced call and accept the new one.
 873  * This function allows the application to know whether a new incoming call is a one that replaces another one.
 874 **/
 875 LinphoneCall *linphone_call_get_replaced_call(LinphoneCall *call){
 876         SalOp *op=sal_call_get_replaces(call->op);
 877         if (op){
 878                 return (LinphoneCall*)sal_op_get_user_pointer(op);
 879         }
 880         return NULL;
 881 }
 882
 883 /**
 884  * Indicate whether camera input should be sent to remote end.
 885 **/
 886 void linphone_call_enable_camera (LinphoneCall *call, bool_t enable){
 887 #ifdef VIDEO_ENABLED
 888         if (call->videostream!=NULL && call->videostream->ticker!=NULL){
 889                 LinphoneCore *lc=call->core;
 890                 MSWebCam *nowebcam=get_nowebcam_device();
 891                 if (call->camera_active!=enable && lc->video_conf.device!=nowebcam){
 892                         video_stream_change_camera(call->videostream,
 893                                      enable ? lc->video_conf.device : nowebcam);
 894                 }
 895         }
 896         call->camera_active=enable;
 897 #endif
 898 }
 899
 900 /**
 901  * Take a photo of currently received video and write it into a jpeg file.
 902 **/
 903 int linphone_call_take_video_snapshot(LinphoneCall *call, const char *file){
 904 #ifdef VIDEO_ENABLED
 905         if (call->videostream!=NULL && call->videostream->jpegwriter!=NULL){
 906                 return ms_filter_call_method(call->videostream->jpegwriter,MS_JPEG_WRITER_TAKE_SNAPSHOT,(void*)file);
 907         }
 908         ms_warning("Cannot take snapshot: no currently running video stream on this call.");
 909         return -1;
 910 #endif
 911         return -1;
 912 }
 913
 914 /**
 915  * Returns TRUE if camera pictures are sent to the remote party.
 916 **/
 917 bool_t linphone_call_camera_enabled (const LinphoneCall *call){
 918         return call->camera_active;
 919 }
 920
 921 /**
 922  * Enable video stream.
 923 **/
 924 void linphone_call_params_enable_video(LinphoneCallParams *cp, bool_t enabled){
 925         cp->has_video=enabled;
 926 }
 927
 928 const PayloadType* linphone_call_params_get_used_audio_codec(const LinphoneCallParams *cp) {
 929         return cp->audio_codec;
 930 }
 931
 932 const PayloadType* linphone_call_params_get_used_video_codec(const LinphoneCallParams *cp) {
 933         return cp->video_codec;
 934 }
 935
 936 bool_t linphone_call_params_low_bandwidth_enabled(const LinphoneCallParams *cp) {
 937         return cp->low_bandwidth;
 938 }
 939 /**
 940  * Returns whether video is enabled.
 941 **/
 942 bool_t linphone_call_params_video_enabled(const LinphoneCallParams *cp){
 943         return cp->has_video;
 944 }
 945
 946 enum LinphoneMediaEncryption linphone_call_params_get_media_encryption(const LinphoneCallParams *cp) {
 947         return cp->media_encryption;
 948 }
 949
 950 void linphone_call_params_set_media_encryption(LinphoneCallParams *cp, enum LinphoneMediaEncryption e) {
 951         cp->media_encryption = e;
 952 }
 953
 954
 955 /**
 956  * Enable sending of real early media (during outgoing calls).
 957 **/
 958 void linphone_call_params_enable_early_media_sending(LinphoneCallParams *cp, bool_t enabled){
 959         cp->real_early_media=enabled;
 960 }
 961
 962 bool_t linphone_call_params_early_media_sending_enabled(const LinphoneCallParams *cp){
 963         return cp->real_early_media;
 964 }
 965
 966 /**
 967  * Returns true if the call is part of the locally managed conference.
 968 **/
 969 bool_t linphone_call_params_local_conference_mode(const LinphoneCallParams *cp){
 970         return cp->in_conference;
 971 }
 972
 973 /**
 974  * Refine bandwidth settings for this call by setting a bandwidth limit for audio streams.
 975  * As a consequence, codecs whose bitrates are not compatible with this limit won't be used.
 976 **/
 977 void linphone_call_params_set_audio_bandwidth_limit(LinphoneCallParams *cp, int bandwidth){
 978         cp->audio_bw=bandwidth;
 979 }
 980
 981 #ifdef VIDEO_ENABLED
 982 /**
 983  * Request remote side to send us a Video Fast Update.
 984 **/
 985 void linphone_call_send_vfu_request(LinphoneCall *call)
 986 {
 987         if (LinphoneCallStreamsRunning == linphone_call_get_state(call))
 988                 sal_call_send_vfu_request(call->op);
 989 }
 990 #endif
 991
 992 /**
 993  *
 994 **/
 995 LinphoneCallParams * linphone_call_params_copy(const LinphoneCallParams *cp){
 996         LinphoneCallParams *ncp=ms_new0(LinphoneCallParams,1);
 997         memcpy(ncp,cp,sizeof(LinphoneCallParams));
 998         return ncp;
 999 }
1000
1001 /**
1002  *
1003 **/
1004 void linphone_call_params_destroy(LinphoneCallParams *p){
1005         ms_free(p);
1006 }
1007
1008 /**
1009  * @}
1010 **/
1011
1012
1013 #ifdef TEST_EXT_RENDERER
1014 static void rendercb(void *data, const MSPicture *local, const MSPicture *remote){
1015         ms_message("rendercb, local buffer=%p, remote buffer=%p",
1016                    local ? local->planes[0] : NULL, remote? remote->planes[0] : NULL);
1017 }
1018 #endif
1019
1020 #ifdef VIDEO_ENABLED
1021 static void video_stream_event_cb(void *user_pointer, const MSFilter *f, const unsigned int event_id, const void *args){
1022     LinphoneCall* call = (LinphoneCall*) user_pointer;
1023         ms_warning("In linphonecall.c: video_stream_event_cb");
1024         switch (event_id) {
1025                 case MS_VIDEO_DECODER_DECODING_ERRORS:
1026                         ms_warning("Case is MS_VIDEO_DECODER_DECODING_ERRORS");
1027                         linphone_call_send_vfu_request(call);
1028                         break;
1029         case MS_VIDEO_DECODER_FIRST_IMAGE_DECODED:
1030             ms_message("First video frame decoded successfully");
1031             if (call->nextVideoFrameDecoded._func != NULL)
1032                 call->nextVideoFrameDecoded._func(call, call->nextVideoFrameDecoded._user_data);
1033             break;
1034                 default:
1035                         ms_warning("Unhandled event %i", event_id);
1036                         break;
1037         }
1038 }
1039 #endif
1040
1041 void linphone_call_set_next_video_frame_decoded_callback(LinphoneCall *call, LinphoneCallCbFunc cb, void* user_data) {
1042     call->nextVideoFrameDecoded._func = cb;
1043     call->nextVideoFrameDecoded._user_data = user_data;
1044 #ifdef VIDEO_ENABLED
1045     ms_filter_call_method_noarg(call->videostream->decoder, MS_VIDEO_DECODER_RESET_FIRST_IMAGE_NOTIFICATION);
1046 #endif
1047 }
1048
1049 void linphone_call_init_audio_stream(LinphoneCall *call){
1050         LinphoneCore *lc=call->core;
1051         AudioStream *audiostream;
1052         int dscp;
1053
1054         if (call->audiostream != NULL) return;
1055         call->audiostream=audiostream=audio_stream_new(call->audio_port,call->audio_port+1,linphone_core_ipv6_enabled(lc));
1056         dscp=linphone_core_get_audio_dscp(lc);
1057         if (dscp!=-1)
1058                 audio_stream_set_dscp(audiostream,dscp);
1059         if (linphone_core_echo_limiter_enabled(lc)){
1060                 const char *type=lp_config_get_string(lc->config,"sound","el_type","mic");
1061                 if (strcasecmp(type,"mic")==0)
1062                         audio_stream_enable_echo_limiter(audiostream,ELControlMic);
1063                 else if (strcasecmp(type,"full")==0)
1064                         audio_stream_enable_echo_limiter(audiostream,ELControlFull);
1065         }
1066         audio_stream_enable_gain_control(audiostream,TRUE);
1067         if (linphone_core_echo_cancellation_enabled(lc)){
1068                 int len,delay,framesize;
1069                 const char *statestr=lp_config_get_string(lc->config,"sound","ec_state",NULL);
1070                 len=lp_config_get_int(lc->config,"sound","ec_tail_len",0);
1071                 delay=lp_config_get_int(lc->config,"sound","ec_delay",0);
1072                 framesize=lp_config_get_int(lc->config,"sound","ec_framesize",0);
1073                 audio_stream_set_echo_canceller_params(audiostream,len,delay,framesize);
1074                 if (statestr && audiostream->ec){
1075                         ms_filter_call_method(audiostream->ec,MS_ECHO_CANCELLER_SET_STATE_STRING,(void*)statestr);
1076                 }
1077         }
1078         audio_stream_enable_automatic_gain_control(audiostream,linphone_core_agc_enabled(lc));
1079         {
1080                 int enabled=lp_config_get_int(lc->config,"sound","noisegate",0);
1081                 audio_stream_enable_noise_gate(audiostream,enabled);
1082         }
1083
1084         audio_stream_set_features(audiostream,linphone_core_get_audio_features(lc));
1085
1086         if (lc->rtptf){
1087                 RtpTransport *artp=lc->rtptf->audio_rtp_func(lc->rtptf->audio_rtp_func_data, call->audio_port);
1088                 RtpTransport *artcp=lc->rtptf->audio_rtcp_func(lc->rtptf->audio_rtcp_func_data, call->audio_port+1);
1089                 rtp_session_set_transports(audiostream->session,artp,artcp);
1090         }
1091         if ((linphone_core_get_firewall_policy(lc) == LinphonePolicyUseIce) && (call->ice_session != NULL)){
1092                 rtp_session_set_pktinfo(audiostream->session, TRUE);
1093                 rtp_session_set_symmetric_rtp(audiostream->session, FALSE);
1094                 if (ice_session_check_list(call->ice_session, 0) == NULL) {
1095                         ice_session_add_check_list(call->ice_session, ice_check_list_new());
1096                 }
1097                 audiostream->ice_check_list = ice_session_check_list(call->ice_session, 0);
1098                 ice_check_list_set_rtp_session(audiostream->ice_check_list, audiostream->session);
1099         }
1100
1101         call->audiostream_app_evq = ortp_ev_queue_new();
1102         rtp_session_register_event_queue(audiostream->session,call->audiostream_app_evq);
1103 }
1104
1105 void linphone_call_init_video_stream(LinphoneCall *call){
1106 #ifdef VIDEO_ENABLED
1107         LinphoneCore *lc=call->core;
1108
1109         if (!call->params.has_video) {
1110                 linphone_call_stop_video_stream(call);
1111                 return;
1112         }
1113         if (call->videostream != NULL) return;
1114         if ((lc->video_conf.display || lc->video_conf.capture) && call->params.has_video){
1115                 int video_recv_buf_size=lp_config_get_int(lc->config,"video","recv_buf_size",0);
1116                 int dscp=linphone_core_get_video_dscp(lc);
1117
1118                 call->videostream=video_stream_new(call->video_port,call->video_port+1,linphone_core_ipv6_enabled(lc));
1119                 if (dscp!=-1)
1120                         video_stream_set_dscp(call->videostream,dscp);
1121                 video_stream_enable_display_filter_auto_rotate(call->videostream, lp_config_get_int(lc->config,"video","display_filter_auto_rotate",0));
1122                 if (video_recv_buf_size>0) rtp_session_set_recv_buf_size(call->videostream->session,video_recv_buf_size);
1123
1124                 if( lc->video_conf.displaytype != NULL)
1125                         video_stream_set_display_filter_name(call->videostream,lc->video_conf.displaytype);
1126                 video_stream_set_event_callback(call->videostream,video_stream_event_cb, call);
1127                 if (lc->rtptf){
1128                         RtpTransport *vrtp=lc->rtptf->video_rtp_func(lc->rtptf->video_rtp_func_data, call->video_port);
1129                         RtpTransport *vrtcp=lc->rtptf->video_rtcp_func(lc->rtptf->video_rtcp_func_data, call->video_port+1);
1130                         rtp_session_set_transports(call->videostream->session,vrtp,vrtcp);
1131                 }
1132                 if ((linphone_core_get_firewall_policy(lc) == LinphonePolicyUseIce) && (call->ice_session != NULL)){
1133                         rtp_session_set_pktinfo(call->videostream->session, TRUE);
1134                         rtp_session_set_symmetric_rtp(call->videostream->session, FALSE);
1135                         if (ice_session_check_list(call->ice_session, 1) == NULL) {
1136                                 ice_session_add_check_list(call->ice_session, ice_check_list_new());
1137                         }
1138                         call->videostream->ice_check_list = ice_session_check_list(call->ice_session, 1);
1139                         ice_check_list_set_rtp_session(call->videostream->ice_check_list, call->videostream->session);
1140                 }
1141                 call->videostream_app_evq = ortp_ev_queue_new();
1142                 rtp_session_register_event_queue(call->videostream->session,call->videostream_app_evq);
1143 #ifdef TEST_EXT_RENDERER
1144                 video_stream_set_render_callback(call->videostream,rendercb,NULL);
1145 #endif
1146         }
1147 #else
1148         call->videostream=NULL;
1149 #endif
1150 }
1151
1152 void linphone_call_init_media_streams(LinphoneCall *call){
1153         linphone_call_init_audio_stream(call);
1154         linphone_call_init_video_stream(call);
1155 }
1156
1157
1158 static int dtmf_tab[16]={'0','1','2','3','4','5','6','7','8','9','*','#','A','B','C','D'};
1159
1160 static void linphone_core_dtmf_received(LinphoneCore *lc, int dtmf){
1161         if (dtmf<0 || dtmf>15){
1162                 ms_warning("Bad dtmf value %i",dtmf);
1163                 return;
1164         }
1165         if (lc->vtable.dtmf_received != NULL)
1166                 lc->vtable.dtmf_received(lc, linphone_core_get_current_call(lc), dtmf_tab[dtmf]);
1167 }
1168
1169 static void parametrize_equalizer(LinphoneCore *lc, AudioStream *st){
1170         if (st->equalizer){
1171                 MSFilter *f=st->equalizer;
1172                 int enabled=lp_config_get_int(lc->config,"sound","eq_active",0);
1173                 const char *gains=lp_config_get_string(lc->config,"sound","eq_gains",NULL);
1174                 ms_filter_call_method(f,MS_EQUALIZER_SET_ACTIVE,&enabled);
1175                 if (enabled){
1176                         if (gains){
1177                                 do{
1178                                         int bytes;
1179                                         MSEqualizerGain g;
1180                                         if (sscanf(gains,"%f:%f:%f %n",&g.frequency,&g.gain,&g.width,&bytes)==3){
1181                                                 ms_message("Read equalizer gains: %f(~%f) --> %f",g.frequency,g.width,g.gain);
1182                                                 ms_filter_call_method(f,MS_EQUALIZER_SET_GAIN,&g);
1183                                                 gains+=bytes;
1184                                         }else break;
1185                                 }while(1);
1186                         }
1187                 }
1188         }
1189 }
1190
1191 void _post_configure_audio_stream(AudioStream *st, LinphoneCore *lc, bool_t muted){
1192         float mic_gain=lp_config_get_float(lc->config,"sound","mic_gain",1);
1193         float thres = 0;
1194         float recv_gain;
1195         float ng_thres=lp_config_get_float(lc->config,"sound","ng_thres",0.05);
1196         float ng_floorgain=lp_config_get_float(lc->config,"sound","ng_floorgain",0);
1197         int dc_removal=lp_config_get_int(lc->config,"sound","dc_removal",0);
1198
1199         if (!muted)
1200                 audio_stream_set_mic_gain(st,mic_gain);
1201         else
1202                 audio_stream_set_mic_gain(st,0);
1203
1204         recv_gain = lc->sound_conf.soft_play_lev;
1205         if (recv_gain != 0) {
1206                 linphone_core_set_playback_gain_db (lc,recv_gain);
1207         }
1208
1209         if (st->volsend){
1210                 ms_filter_call_method(st->volsend,MS_VOLUME_REMOVE_DC,&dc_removal);
1211                 float speed=lp_config_get_float(lc->config,"sound","el_speed",-1);
1212                 thres=lp_config_get_float(lc->config,"sound","el_thres",-1);
1213                 float force=lp_config_get_float(lc->config,"sound","el_force",-1);
1214                 int sustain=lp_config_get_int(lc->config,"sound","el_sustain",-1);
1215                 float transmit_thres=lp_config_get_float(lc->config,"sound","el_transmit_thres",-1);
1216                 MSFilter *f=NULL;
1217                 f=st->volsend;
1218                 if (speed==-1) speed=0.03;
1219                 if (force==-1) force=25;
1220                 ms_filter_call_method(f,MS_VOLUME_SET_EA_SPEED,&speed);
1221                 ms_filter_call_method(f,MS_VOLUME_SET_EA_FORCE,&force);
1222                 if (thres!=-1)
1223                         ms_filter_call_method(f,MS_VOLUME_SET_EA_THRESHOLD,&thres);
1224                 if (sustain!=-1)
1225                         ms_filter_call_method(f,MS_VOLUME_SET_EA_SUSTAIN,&sustain);
1226                 if (transmit_thres!=-1)
1227                                 ms_filter_call_method(f,MS_VOLUME_SET_EA_TRANSMIT_THRESHOLD,&transmit_thres);
1228
1229                 ms_filter_call_method(st->volsend,MS_VOLUME_SET_NOISE_GATE_THRESHOLD,&ng_thres);
1230                 ms_filter_call_method(st->volsend,MS_VOLUME_SET_NOISE_GATE_FLOORGAIN,&ng_floorgain);
1231         }
1232         if (st->volrecv){
1233                 /* parameters for a limited noise-gate effect, using echo limiter threshold */
1234                 float floorgain = 1/mic_gain;
1235                 int spk_agc=lp_config_get_int(lc->config,"sound","speaker_agc_enabled",0);
1236                 ms_filter_call_method(st->volrecv, MS_VOLUME_ENABLE_AGC, &spk_agc);
1237                 ms_filter_call_method(st->volrecv,MS_VOLUME_SET_NOISE_GATE_THRESHOLD,&ng_thres);
1238                 ms_filter_call_method(st->volrecv,MS_VOLUME_SET_NOISE_GATE_FLOORGAIN,&floorgain);
1239         }
1240         parametrize_equalizer(lc,st);
1241 }
1242
1243 static void post_configure_audio_streams(LinphoneCall*call){
1244         AudioStream *st=call->audiostream;
1245         LinphoneCore *lc=call->core;
1246         _post_configure_audio_stream(st,lc,call->audio_muted);
1247         if (lc->vtable.dtmf_received!=NULL){
1248                 /* replace by our default action*/
1249                 audio_stream_play_received_dtmfs(call->audiostream,FALSE);
1250                 /*rtp_session_signal_connect(call->audiostream->session,"telephone-event",(RtpCallback)linphone_core_dtmf_received,(unsigned long)lc);*/
1251         }
1252 }
1253
1254 static RtpProfile *make_profile(LinphoneCall *call, const SalMediaDescription *md, const SalStreamDescription *desc, int *used_pt){
1255         int bw;
1256         const MSList *elem;
1257         RtpProfile *prof=rtp_profile_new("Call profile");
1258         bool_t first=TRUE;
1259         int remote_bw=0;
1260         LinphoneCore *lc=call->core;
1261         int up_ptime=0;
1262         const LinphoneCallParams *params=&call->params;
1263         *used_pt=-1;
1264
1265         for(elem=desc->payloads;elem!=NULL;elem=elem->next){
1266                 PayloadType *pt=(PayloadType*)elem->data;
1267                 int number;
1268
1269                 if ((pt->flags & PAYLOAD_TYPE_FLAG_CAN_SEND) && first) {
1270                         if (desc->type==SalAudio){
1271                                 linphone_core_update_allocated_audio_bandwidth_in_call(call,pt);
1272                                 if (params->up_ptime)
1273                                         up_ptime=params->up_ptime;
1274                                 else up_ptime=linphone_core_get_upload_ptime(lc);
1275                         }
1276                         *used_pt=payload_type_get_number(pt);
1277                         first=FALSE;
1278                 }
1279                 if (desc->bandwidth>0) remote_bw=desc->bandwidth;
1280                 else if (md->bandwidth>0) {
1281                         /*case where b=AS is given globally, not per stream*/
1282                         remote_bw=md->bandwidth;
1283                         if (desc->type==SalVideo){
1284                                 remote_bw=get_video_bandwidth(remote_bw,call->audio_bw);
1285                         }
1286                 }
1287
1288                 if (desc->type==SalAudio){
1289                         int audio_bw=call->audio_bw;
1290                         if (params->up_bw){
1291                                 if (params->up_bw< audio_bw)
1292                                         audio_bw=params->up_bw;
1293                         }
1294                         bw=get_min_bandwidth(audio_bw,remote_bw);
1295                 }else bw=get_min_bandwidth(get_video_bandwidth(linphone_core_get_upload_bandwidth (lc),call->audio_bw),remote_bw);
1296                 if (bw>0) pt->normal_bitrate=bw*1000;
1297                 else if (desc->type==SalAudio){
1298                         pt->normal_bitrate=-1;
1299                 }
1300                 if (desc->ptime>0){
1301                         up_ptime=desc->ptime;
1302                 }
1303                 if (up_ptime>0){
1304                         char tmp[40];
1305                         snprintf(tmp,sizeof(tmp),"ptime=%i",up_ptime);
1306                         payload_type_append_send_fmtp(pt,tmp);
1307                 }
1308                 number=payload_type_get_number(pt);
1309                 if (rtp_profile_get_payload(prof,number)!=NULL){
1310                         ms_warning("A payload type with number %i already exists in profile !",number);
1311                 }else
1312                         rtp_profile_set_payload(prof,number,pt);
1313         }
1314         return prof;
1315 }
1316
1317
1318 static void setup_ring_player(LinphoneCore *lc, LinphoneCall *call){
1319         int pause_time=3000;
1320         audio_stream_play(call->audiostream,lc->sound_conf.ringback_tone);
1321         ms_filter_call_method(call->audiostream->soundread,MS_FILE_PLAYER_LOOP,&pause_time);
1322 }
1323
1324 static bool_t linphone_call_sound_resources_available(LinphoneCall *call){
1325         LinphoneCore *lc=call->core;
1326         LinphoneCall *current=linphone_core_get_current_call(lc);
1327         return !linphone_core_is_in_conference(lc) &&
1328                 (current==NULL || current==call);
1329 }
1330 static int find_crypto_index_from_tag(const SalSrtpCryptoAlgo crypto[],unsigned char tag) {
1331     int i;
1332     for(i=0; i<SAL_CRYPTO_ALGO_MAX; i++) {
1333         if (crypto[i].tag == tag) {
1334             return i;
1335         }
1336     }
1337     return -1;
1338 }
1339 static void linphone_call_start_audio_stream(LinphoneCall *call, const char *cname, bool_t muted, bool_t send_ringbacktone, bool_t use_arc){
1340         LinphoneCore *lc=call->core;
1341         int used_pt=-1;
1342         char rtcp_tool[128]={0};
1343         snprintf(rtcp_tool,sizeof(rtcp_tool)-1,"%s-%s",linphone_core_get_user_agent_name(),linphone_core_get_user_agent_version());
1344         /* look for savp stream first */
1345         const SalStreamDescription *stream=sal_media_description_find_stream(call->resultdesc,
1346                                                 SalProtoRtpSavp,SalAudio);
1347         /* no savp audio stream, use avp */
1348         if (!stream)
1349                 stream=sal_media_description_find_stream(call->resultdesc,
1350                                                 SalProtoRtpAvp,SalAudio);
1351
1352         if (stream && stream->dir!=SalStreamInactive && stream->rtp_port!=0){
1353                 MSSndCard *playcard=lc->sound_conf.lsd_card ?
1354                         lc->sound_conf.lsd_card : lc->sound_conf.play_sndcard;
1355                 MSSndCard *captcard=lc->sound_conf.capt_sndcard;
1356                 const char *playfile=lc->play_file;
1357                 const char *recfile=lc->rec_file;
1358                 call->audio_profile=make_profile(call,call->resultdesc,stream,&used_pt);
1359                 bool_t use_ec;
1360
1361                 if (used_pt!=-1){
1362                         call->current_params.audio_codec = rtp_profile_get_payload(call->audio_profile, used_pt);
1363                         if (playcard==NULL) {
1364                                 ms_warning("No card defined for playback !");
1365                         }
1366                         if (captcard==NULL) {
1367                                 ms_warning("No card defined for capture !");
1368                         }
1369                         /*Replace soundcard filters by inactive file players or recorders
1370                          when placed in recvonly or sendonly mode*/
1371                         if (stream->rtp_port==0 || stream->dir==SalStreamRecvOnly){
1372                                 captcard=NULL;
1373                                 playfile=NULL;
1374                         }else if (stream->dir==SalStreamSendOnly){
1375                                 playcard=NULL;
1376                                 captcard=NULL;
1377                                 recfile=NULL;
1378                                 /*And we will eventually play "playfile" if set by the user*/
1379                                 /*playfile=NULL;*/
1380                         }
1381                         if (send_ringbacktone){
1382                                 captcard=NULL;
1383                                 playfile=NULL;/* it is setup later*/
1384                         }
1385                         /*if playfile are supplied don't use soundcards*/
1386                         if (lc->use_files) {
1387                                 captcard=NULL;
1388                                 playcard=NULL;
1389                         }
1390                         if (call->params.in_conference){
1391                                 /* first create the graph without soundcard resources*/
1392                                 captcard=playcard=NULL;
1393                         }
1394                         if (!linphone_call_sound_resources_available(call)){
1395                                 ms_message("Sound resources are used by another call, not using soundcard.");
1396                                 captcard=playcard=NULL;
1397                         }
1398                         use_ec=captcard==NULL ? FALSE : linphone_core_echo_cancellation_enabled(lc);
1399                         if (playcard &&  stream->max_rate>0) ms_snd_card_set_preferred_sample_rate(playcard, stream->max_rate);
1400                         if (captcard &&  stream->max_rate>0) ms_snd_card_set_preferred_sample_rate(captcard, stream->max_rate);
1401                         audio_stream_enable_adaptive_bitrate_control(call->audiostream,use_arc);
1402                         audio_stream_enable_adaptive_jittcomp(call->audiostream, linphone_core_audio_adaptive_jittcomp_enabled(lc));
1403                         audio_stream_start_full(
1404                                 call->audiostream,
1405                                 call->audio_profile,
1406                                 stream->rtp_addr[0]!='\0' ? stream->rtp_addr : call->resultdesc->addr,
1407                                 stream->rtp_port,
1408                                 stream->rtcp_addr[0]!='\0' ? stream->rtcp_addr : call->resultdesc->addr,
1409                                 linphone_core_rtcp_enabled(lc) ? (stream->rtcp_port) : 0,
1410                                 used_pt,
1411                                 linphone_core_get_audio_jittcomp(lc),
1412                                 playfile,
1413                                 recfile,
1414                                 playcard,
1415                                 captcard,
1416                                 use_ec
1417                                 );
1418                         post_configure_audio_streams(call);
1419                         if (muted && !send_ringbacktone){
1420                                 audio_stream_set_mic_gain(call->audiostream,0);
1421                         }
1422                         if (stream->dir==SalStreamSendOnly && playfile!=NULL){
1423                                 int pause_time=500;
1424                                 ms_filter_call_method(call->audiostream->soundread,MS_FILE_PLAYER_LOOP,&pause_time);
1425                         }
1426                         if (send_ringbacktone){
1427                                 setup_ring_player(lc,call);
1428                         }
1429                         audio_stream_set_rtcp_information(call->audiostream, cname, rtcp_tool);
1430
1431             /* valid local tags are > 0 */
1432                         if (stream->proto == SalProtoRtpSavp) {
1433                 const SalStreamDescription *local_st_desc=sal_media_description_find_stream(call->localdesc,
1434                                                                                             SalProtoRtpSavp,SalAudio);
1435                 int crypto_idx = find_crypto_index_from_tag(local_st_desc->crypto, stream->crypto_local_tag);
1436
1437                 if (crypto_idx >= 0) {
1438                     audio_stream_enable_strp(
1439                                              call->audiostream,
1440                                              stream->crypto[0].algo,
1441                                              local_st_desc->crypto[crypto_idx].master_key,
1442                                              stream->crypto[0].master_key);
1443                     call->audiostream_encrypted=TRUE;
1444                 } else {
1445                     ms_warning("Failed to find local crypto algo with tag: %d", stream->crypto_local_tag);
1446                     call->audiostream_encrypted=FALSE;
1447                 }
1448                         }else call->audiostream_encrypted=FALSE;
1449                         if (call->params.in_conference){
1450                                 /*transform the graph to connect it to the conference filter */
1451                                 bool_t mute=stream->dir==SalStreamRecvOnly;
1452                                 linphone_call_add_to_conf(call, mute);
1453                         }
1454                         call->current_params.in_conference=call->params.in_conference;
1455                         call->current_params.low_bandwidth=call->params.low_bandwidth;
1456                 }else ms_warning("No audio stream accepted ?");
1457         }
1458 }
1459
1460 static void linphone_call_start_video_stream(LinphoneCall *call, const char *cname,bool_t all_inputs_muted){
1461 #ifdef VIDEO_ENABLED
1462         LinphoneCore *lc=call->core;
1463         int used_pt=-1;
1464         /* look for savp stream first */
1465         const SalStreamDescription *vstream=sal_media_description_find_stream(call->resultdesc,
1466                                                 SalProtoRtpSavp,SalVideo);
1467         char rtcp_tool[128]={0};
1468         snprintf(rtcp_tool,sizeof(rtcp_tool)-1,"%s-%s",linphone_core_get_user_agent_name(),linphone_core_get_user_agent_version());
1469
1470         /* no savp audio stream, use avp */
1471         if (!vstream)
1472                 vstream=sal_media_description_find_stream(call->resultdesc,
1473                                                 SalProtoRtpAvp,SalVideo);
1474
1475         /* shutdown preview */
1476         if (lc->previewstream!=NULL) {
1477                 video_preview_stop(lc->previewstream);
1478                 lc->previewstream=NULL;
1479         }
1480
1481         if (vstream!=NULL && vstream->dir!=SalStreamInactive && vstream->rtp_port!=0) {
1482                 const char *rtp_addr=vstream->rtp_addr[0]!='\0' ? vstream->rtp_addr : call->resultdesc->addr;
1483                 const char *rtcp_addr=vstream->rtcp_addr[0]!='\0' ? vstream->rtcp_addr : call->resultdesc->addr;
1484                 call->video_profile=make_profile(call,call->resultdesc,vstream,&used_pt);
1485                 if (used_pt!=-1){
1486                         call->current_params.video_codec = rtp_profile_get_payload(call->video_profile, used_pt);
1487                         VideoStreamDir dir=VideoStreamSendRecv;
1488                         MSWebCam *cam=lc->video_conf.device;
1489                         bool_t is_inactive=FALSE;
1490
1491                         call->current_params.has_video=TRUE;
1492
1493                         video_stream_enable_adaptive_bitrate_control(call->videostream,
1494                                                                   linphone_core_adaptive_rate_control_enabled(lc));
1495                         video_stream_enable_adaptive_jittcomp(call->videostream, linphone_core_video_adaptive_jittcomp_enabled(lc));
1496                         video_stream_set_sent_video_size(call->videostream,linphone_core_get_preferred_video_size(lc));
1497                         video_stream_enable_self_view(call->videostream,lc->video_conf.selfview);
1498                         if (lc->video_window_id!=0)
1499                                 video_stream_set_native_window_id(call->videostream,lc->video_window_id);
1500                         if (lc->preview_window_id!=0)
1501                                 video_stream_set_native_preview_window_id (call->videostream,lc->preview_window_id);
1502                         video_stream_use_preview_video_window (call->videostream,lc->use_preview_window);
1503
1504                         if (vstream->dir==SalStreamSendOnly && lc->video_conf.capture ){
1505                                 cam=get_nowebcam_device();
1506                                 dir=VideoStreamSendOnly;
1507                         }else if (vstream->dir==SalStreamRecvOnly && lc->video_conf.display ){
1508                                 dir=VideoStreamRecvOnly;
1509                         }else if (vstream->dir==SalStreamSendRecv){
1510                                 if (lc->video_conf.display && lc->video_conf.capture)
1511                                         dir=VideoStreamSendRecv;
1512                                 else if (lc->video_conf.display)
1513                                         dir=VideoStreamRecvOnly;
1514                                 else
1515                                         dir=VideoStreamSendOnly;
1516                         }else{
1517                                 ms_warning("video stream is inactive.");
1518                                 /*either inactive or incompatible with local capabilities*/
1519                                 is_inactive=TRUE;
1520                         }
1521                         if (call->camera_active==FALSE || all_inputs_muted){
1522                                 cam=get_nowebcam_device();
1523                         }
1524                         if (!is_inactive){
1525                                 call->log->video_enabled = TRUE;
1526                                 video_stream_set_direction (call->videostream, dir);
1527                                 ms_message("%s lc rotation:%d\n", __FUNCTION__, lc->device_rotation);
1528                                 video_stream_set_device_rotation(call->videostream, lc->device_rotation);
1529                                 video_stream_start(call->videostream,
1530                                         call->video_profile, rtp_addr, vstream->rtp_port,
1531                                         rtcp_addr, linphone_core_rtcp_enabled(lc) ? (vstream->rtcp_port) : 0,
1532                                         used_pt, linphone_core_get_video_jittcomp(lc), cam);
1533                                 video_stream_set_rtcp_information(call->videostream, cname,rtcp_tool);
1534                         }
1535
1536                         if (vstream->proto == SalProtoRtpSavp) {
1537                                 const SalStreamDescription *local_st_desc=sal_media_description_find_stream(call->localdesc,
1538                                                 SalProtoRtpSavp,SalVideo);
1539
1540                                 video_stream_enable_strp(
1541                                         call->videostream,
1542                                         vstream->crypto[0].algo,
1543                                         local_st_desc->crypto[0].master_key,
1544                                         vstream->crypto[0].master_key
1545                                         );
1546                                 call->videostream_encrypted=TRUE;
1547                         }else{
1548                                 call->videostream_encrypted=FALSE;
1549                         }
1550                 }else ms_warning("No video stream accepted.");
1551         }else{
1552                 ms_warning("No valid video stream defined.");
1553         }
1554 #endif
1555 }
1556
1557 void linphone_call_start_media_streams(LinphoneCall *call, bool_t all_inputs_muted, bool_t send_ringbacktone){
1558         LinphoneCore *lc=call->core;
1559
1560         call->current_params.audio_codec = NULL;
1561         call->current_params.video_codec = NULL;
1562
1563         LinphoneAddress *me=linphone_core_get_primary_contact_parsed(lc);
1564         char *cname;
1565         bool_t use_arc=linphone_core_adaptive_rate_control_enabled(lc);
1566 #ifdef VIDEO_ENABLED
1567         const SalStreamDescription *vstream=sal_media_description_find_stream(call->resultdesc,
1568                                                         SalProtoRtpAvp,SalVideo);
1569 #endif
1570
1571         if ((call->audiostream == NULL) && (call->videostream == NULL)) {
1572                 ms_fatal("start_media_stream() called without prior init !");
1573                 return;
1574         }
1575         cname=linphone_address_as_string_uri_only(me);
1576
1577 #if defined(VIDEO_ENABLED)
1578         if (vstream!=NULL && vstream->dir!=SalStreamInactive && vstream->payloads!=NULL){
1579                 /*when video is used, do not make adaptive rate control on audio, it is stupid.*/
1580                 use_arc=FALSE;
1581         }
1582 #endif
1583         if (call->audiostream!=NULL) {
1584                 linphone_call_start_audio_stream(call,cname,all_inputs_muted,send_ringbacktone,use_arc);
1585         }
1586         call->current_params.has_video=FALSE;
1587         if (call->videostream!=NULL) {
1588                 linphone_call_start_video_stream(call,cname,all_inputs_muted);
1589         }
1590
1591         call->all_muted=all_inputs_muted;
1592         call->playing_ringbacktone=send_ringbacktone;
1593         call->up_bw=linphone_core_get_upload_bandwidth(lc);
1594
1595         if (call->params.media_encryption==LinphoneMediaEncryptionZRTP) {
1596                 OrtpZrtpParams params;
1597                 /*will be set later when zrtp is activated*/
1598                 call->current_params.media_encryption=LinphoneMediaEncryptionNone;
1599
1600                 params.zid_file=lc->zrtp_secrets_cache;
1601                 audio_stream_enable_zrtp(call->audiostream,&params);
1602         }else if (call->params.media_encryption==LinphoneMediaEncryptionSRTP){
1603                 call->current_params.media_encryption=linphone_call_are_all_streams_encrypted(call) ?
1604                         LinphoneMediaEncryptionSRTP : LinphoneMediaEncryptionNone;
1605         }
1606
1607         /*also reflect the change if the "wished" params, in order to avoid to propose SAVP or video again
1608          * further in the call, for example during pause,resume, conferencing reINVITEs*/
1609         linphone_call_fix_call_parameters(call);
1610         if ((call->ice_session != NULL) && (ice_session_state(call->ice_session) != IS_Completed)) {
1611                 ice_session_start_connectivity_checks(call->ice_session);
1612         }
1613
1614         goto end;
1615         end:
1616                 ms_free(cname);
1617                 linphone_address_destroy(me);
1618 }
1619
1620 void linphone_call_start_media_streams_for_ice_gathering(LinphoneCall *call){
1621         audio_stream_prepare_sound(call->audiostream, NULL, NULL);
1622 #ifdef VIDEO_ENABLED
1623         if (call->videostream) {
1624                 video_stream_prepare_video(call->videostream);
1625         }
1626 #endif
1627 }
1628
1629 void linphone_call_stop_media_streams_for_ice_gathering(LinphoneCall *call){
1630         audio_stream_unprepare_sound(call->audiostream);
1631 #ifdef VIDEO_ENABLED
1632         if (call->videostream) {
1633                 video_stream_unprepare_video(call->videostream);
1634         }
1635 #endif
1636 }
1637
1638 void linphone_call_delete_ice_session(LinphoneCall *call){
1639         if (call->ice_session != NULL) {
1640                 ice_session_destroy(call->ice_session);
1641                 call->ice_session = NULL;
1642                 if (call->audiostream != NULL) call->audiostream->ice_check_list = NULL;
1643                 if (call->videostream != NULL) call->videostream->ice_check_list = NULL;
1644                 call->stats[LINPHONE_CALL_STATS_AUDIO].ice_state = LinphoneIceStateNotActivated;
1645                 call->stats[LINPHONE_CALL_STATS_VIDEO].ice_state = LinphoneIceStateNotActivated;
1646         }
1647 }
1648
1649 static void linphone_call_log_fill_stats(LinphoneCallLog *log, AudioStream *st){
1650         audio_stream_get_local_rtp_stats (st,&log->local_stats);
1651         log->quality=audio_stream_get_average_quality_rating(st);
1652 }
1653
1654 void linphone_call_stop_audio_stream(LinphoneCall *call) {
1655         if (call->audiostream!=NULL) {
1656                 rtp_session_unregister_event_queue(call->audiostream->session,call->audiostream_app_evq);
1657                 ortp_ev_queue_flush(call->audiostream_app_evq);
1658                 ortp_ev_queue_destroy(call->audiostream_app_evq);
1659                 call->audiostream_app_evq=NULL;
1660
1661                 if (call->audiostream->ec){
1662                         const char *state_str=NULL;
1663                         ms_filter_call_method(call->audiostream->ec,MS_ECHO_CANCELLER_GET_STATE_STRING,&state_str);
1664                         if (state_str){
1665                                 ms_message("Writing echo canceler state, %i bytes",(int)strlen(state_str));
1666                                 lp_config_set_string(call->core->config,"sound","ec_state",state_str);
1667                         }
1668                 }
1669                 linphone_call_log_fill_stats (call->log,call->audiostream);
1670                 if (call->endpoint){
1671                         linphone_call_remove_from_conf(call);
1672                 }
1673                 audio_stream_stop(call->audiostream);
1674                 call->audiostream=NULL;
1675         }
1676 }
1677
1678 void linphone_call_stop_video_stream(LinphoneCall *call) {
1679 #ifdef VIDEO_ENABLED
1680         if (call->videostream!=NULL){
1681                 rtp_session_unregister_event_queue(call->videostream->session,call->videostream_app_evq);
1682                 ortp_ev_queue_flush(call->videostream_app_evq);
1683                 ortp_ev_queue_destroy(call->videostream_app_evq);
1684                 call->videostream_app_evq=NULL;
1685                 video_stream_stop(call->videostream);
1686                 call->videostream=NULL;
1687         }
1688 #endif
1689 }
1690
1691 void linphone_call_stop_media_streams(LinphoneCall *call){
1692         linphone_call_stop_audio_stream(call);
1693         linphone_call_stop_video_stream(call);
1694         ms_event_queue_skip(call->core->msevq);
1695
1696         if (call->audio_profile){
1697                 rtp_profile_clear_all(call->audio_profile);
1698                 rtp_profile_destroy(call->audio_profile);
1699                 call->audio_profile=NULL;
1700         }
1701         if (call->video_profile){
1702                 rtp_profile_clear_all(call->video_profile);
1703                 rtp_profile_destroy(call->video_profile);
1704                 call->video_profile=NULL;
1705         }
1706 }
1707
1708
1709
1710 void linphone_call_enable_echo_cancellation(LinphoneCall *call, bool_t enable) {
1711         if (call!=NULL && call->audiostream!=NULL && call->audiostream->ec){
1712                 bool_t bypass_mode = !enable;
1713                 ms_filter_call_method(call->audiostream->ec,MS_ECHO_CANCELLER_SET_BYPASS_MODE,&bypass_mode);
1714         }
1715 }
1716 bool_t linphone_call_echo_cancellation_enabled(LinphoneCall *call) {
1717         if (call!=NULL && call->audiostream!=NULL && call->audiostream->ec){
1718                 bool_t val;
1719                 ms_filter_call_method(call->audiostream->ec,MS_ECHO_CANCELLER_GET_BYPASS_MODE,&val);
1720                 return !val;
1721         } else {
1722                 return linphone_core_echo_cancellation_enabled(call->core);
1723         }
1724 }
1725
1726 void linphone_call_enable_echo_limiter(LinphoneCall *call, bool_t val){
1727         if (call!=NULL && call->audiostream!=NULL ) {
1728                 if (val) {
1729                 const char *type=lp_config_get_string(call->core->config,"sound","el_type","mic");
1730                 if (strcasecmp(type,"mic")==0)
1731                         audio_stream_enable_echo_limiter(call->audiostream,ELControlMic);
1732                 else if (strcasecmp(type,"full")==0)
1733                         audio_stream_enable_echo_limiter(call->audiostream,ELControlFull);
1734                 } else {
1735                         audio_stream_enable_echo_limiter(call->audiostream,ELInactive);
1736                 }
1737         }
1738 }
1739
1740 bool_t linphone_call_echo_limiter_enabled(const LinphoneCall *call){
1741         if (call!=NULL && call->audiostream!=NULL ){
1742                 return call->audiostream->el_type !=ELInactive ;
1743         } else {
1744                 return linphone_core_echo_limiter_enabled(call->core);
1745         }
1746 }
1747
1748 /**
1749  * @addtogroup call_misc
1750  * @{
1751 **/
1752
1753 /**
1754  * Returns the measured sound volume played locally (received from remote).
1755  * It is expressed in dbm0.
1756 **/
1757 float linphone_call_get_play_volume(LinphoneCall *call){
1758         AudioStream *st=call->audiostream;
1759         if (st && st->volrecv){
1760                 float vol=0;
1761                 ms_filter_call_method(st->volrecv,MS_VOLUME_GET,&vol);
1762                 return vol;
1763
1764         }
1765         return LINPHONE_VOLUME_DB_LOWEST;
1766 }
1767
1768 /**
1769  * Returns the measured sound volume recorded locally (sent to remote).
1770  * It is expressed in dbm0.
1771 **/
1772 float linphone_call_get_record_volume(LinphoneCall *call){
1773         AudioStream *st=call->audiostream;
1774         if (st && st->volsend && !call->audio_muted && call->state==LinphoneCallStreamsRunning){
1775                 float vol=0;
1776                 ms_filter_call_method(st->volsend,MS_VOLUME_GET,&vol);
1777                 return vol;
1778
1779         }
1780         return LINPHONE_VOLUME_DB_LOWEST;
1781 }
1782
1783 /**
1784  * Obtain real-time quality rating of the call
1785  *
1786  * Based on local RTP statistics and RTCP feedback, a quality rating is computed and updated
1787  * during all the duration of the call. This function returns its value at the time of the function call.
1788  * It is expected that the rating is updated at least every 5 seconds or so.
1789  * The rating is a floating point number comprised between 0 and 5.
1790  *
1791  * 4-5 = good quality <br>
1792  * 3-4 = average quality <br>
1793  * 2-3 = poor quality <br>
1794  * 1-2 = very poor quality <br>
1795  * 0-1 = can't be worse, mostly unusable <br>
1796  *
1797  * @returns The function returns -1 if no quality measurement is available, for example if no
1798  * active audio stream exist. Otherwise it returns the quality rating.
1799 **/
1800 float linphone_call_get_current_quality(LinphoneCall *call){
1801         if (call->audiostream){
1802                 return audio_stream_get_quality_rating(call->audiostream);
1803         }
1804         return -1;
1805 }
1806
1807 /**
1808  * Returns call quality averaged over all the duration of the call.
1809  *
1810  * See linphone_call_get_current_quality() for more details about quality measurement.
1811 **/
1812 float linphone_call_get_average_quality(LinphoneCall *call){
1813         if (call->audiostream){
1814                 return audio_stream_get_average_quality_rating(call->audiostream);
1815         }
1816         return -1;
1817 }
1818
1819 /**
1820  * Access last known statistics for audio stream, for a given call.
1821 **/
1822 const LinphoneCallStats *linphone_call_get_audio_stats(const LinphoneCall *call) {
1823         return &call->stats[LINPHONE_CALL_STATS_AUDIO];
1824 }
1825
1826 /**
1827  * Access last known statistics for video stream, for a given call.
1828 **/
1829 const LinphoneCallStats *linphone_call_get_video_stats(const LinphoneCall *call) {
1830         return &call->stats[LINPHONE_CALL_STATS_VIDEO];
1831 }
1832
1833
1834 /**
1835  * @}
1836 **/
1837
1838 static void report_bandwidth(LinphoneCall *call, RtpSession *as, RtpSession *vs){
1839         call->stats[LINPHONE_CALL_STATS_AUDIO].download_bandwidth=(as!=NULL) ? (rtp_session_compute_recv_bandwidth(as)*1e-3) : 0;
1840         call->stats[LINPHONE_CALL_STATS_AUDIO].upload_bandwidth=(as!=NULL) ? (rtp_session_compute_send_bandwidth(as)*1e-3) : 0;
1841         call->stats[LINPHONE_CALL_STATS_VIDEO].download_bandwidth=(vs!=NULL) ? (rtp_session_compute_recv_bandwidth(vs)*1e-3) : 0;
1842         call->stats[LINPHONE_CALL_STATS_VIDEO].upload_bandwidth=(vs!=NULL) ? (rtp_session_compute_send_bandwidth(vs)*1e-3) : 0;
1843         ms_message("bandwidth usage: audio=[d=%.1f,u=%.1f] video=[d=%.1f,u=%.1f] kbit/sec",
1844                 call->stats[LINPHONE_CALL_STATS_AUDIO].download_bandwidth,
1845                 call->stats[LINPHONE_CALL_STATS_AUDIO].upload_bandwidth ,
1846                 call->stats[LINPHONE_CALL_STATS_VIDEO].download_bandwidth,
1847                 call->stats[LINPHONE_CALL_STATS_VIDEO].upload_bandwidth
1848         );
1849 }
1850
1851 static void linphone_core_disconnected(LinphoneCore *lc, LinphoneCall *call){
1852         char temp[256];
1853         char *from=NULL;
1854         if(call)
1855                 from = linphone_call_get_remote_address_as_string(call);
1856         if (from)
1857         {
1858                 snprintf(temp,sizeof(temp),"Remote end %s seems to have disconnected, the call is going to be closed.",from);
1859                 free(from);
1860         }
1861         else
1862         {
1863                 snprintf(temp,sizeof(temp),"Remote end seems to have disconnected, the call is going to be closed.");
1864         }
1865         if (lc->vtable.display_warning!=NULL)
1866                 lc->vtable.display_warning(lc,temp);
1867         linphone_core_terminate_call(lc,call);
1868 }
1869
1870 static void handle_ice_events(LinphoneCall *call, OrtpEvent *ev){
1871         OrtpEventType evt=ortp_event_get_type(ev);
1872         OrtpEventData *evd=ortp_event_get_data(ev);
1873         int ping_time;
1874
1875         if (evt == ORTP_EVENT_ICE_SESSION_PROCESSING_FINISHED) {
1876                 switch (ice_session_state(call->ice_session)) {
1877                         case IS_Completed:
1878                                 ice_session_select_candidates(call->ice_session);
1879                                 if (ice_session_role(call->ice_session) == IR_Controlling) {
1880                                         linphone_core_update_call(call->core, call, &call->current_params);
1881                                 }
1882                                 break;
1883                         case IS_Failed:
1884                                 if (ice_session_has_completed_check_list(call->ice_session) == TRUE) {
1885                                         ice_session_select_candidates(call->ice_session);
1886                                         if (ice_session_role(call->ice_session) == IR_Controlling) {
1887                                                 /* At least one ICE session has succeeded, so perform a call update. */
1888                                                 linphone_core_update_call(call->core, call, &call->current_params);
1889                                         }
1890                                 }
1891                                 break;
1892                         default:
1893                                 break;
1894                 }
1895                 linphone_core_update_ice_state_in_call_stats(call);
1896         } else if (evt == ORTP_EVENT_ICE_GATHERING_FINISHED) {
1897
1898                 if (evd->info.ice_processing_successful==TRUE) {
1899                         ice_session_compute_candidates_foundations(call->ice_session);
1900                         ice_session_eliminate_redundant_candidates(call->ice_session);
1901                         ice_session_choose_default_candidates(call->ice_session);
1902                         ping_time = ice_session_average_gathering_round_trip_time(call->ice_session);
1903                         if (ping_time >=0) {
1904                                 call->ping_time=ping_time;
1905                         }
1906                 } else {
1907                         ms_warning("No STUN answer from [%s], disabling ICE",linphone_core_get_stun_server(call->core));
1908                         linphone_call_delete_ice_session(call);
1909                 }
1910                 switch (call->state) {
1911                         case LinphoneCallUpdating:
1912                                 linphone_core_start_update_call(call->core, call);
1913                                 break;
1914                         case LinphoneCallUpdatedByRemote:
1915                                 linphone_core_start_accept_call_update(call->core, call);
1916                                 break;
1917                         case LinphoneCallOutgoingInit:
1918                                 linphone_call_stop_media_streams_for_ice_gathering(call);
1919                                 linphone_core_proceed_with_invite_if_ready(call->core, call, NULL);
1920                                 break;
1921                         case LinphoneCallIdle:
1922                                 linphone_call_stop_media_streams_for_ice_gathering(call);
1923                                 linphone_core_notify_incoming_call(call->core, call);
1924                                 break;
1925                         default:
1926                                 break;
1927                 }
1928         } else if (evt == ORTP_EVENT_ICE_LOSING_PAIRS_COMPLETED) {
1929                 linphone_core_start_accept_call_update(call->core, call);
1930                 linphone_core_update_ice_state_in_call_stats(call);
1931         } else if (evt == ORTP_EVENT_ICE_RESTART_NEEDED) {
1932                 ice_session_restart(call->ice_session);
1933                 ice_session_set_role(call->ice_session, IR_Controlling);
1934                 linphone_core_update_call(call->core, call, &call->current_params);
1935         }
1936 }
1937
1938 void linphone_call_background_tasks(LinphoneCall *call, bool_t one_second_elapsed){
1939         LinphoneCore* lc = call->core;
1940         int disconnect_timeout = linphone_core_get_nortp_timeout(call->core);
1941         bool_t disconnected=FALSE;
1942
1943         if (call->state==LinphoneCallStreamsRunning && one_second_elapsed){
1944                 RtpSession *as=NULL,*vs=NULL;
1945                 float audio_load=0, video_load=0;
1946                 if (call->audiostream!=NULL){
1947                         as=call->audiostream->session;
1948                         if (call->audiostream->ticker)
1949                                 audio_load=ms_ticker_get_average_load(call->audiostream->ticker);
1950                 }
1951                 if (call->videostream!=NULL){
1952                         if (call->videostream->ticker)
1953                                 video_load=ms_ticker_get_average_load(call->videostream->ticker);
1954                         vs=call->videostream->session;
1955                 }
1956                 report_bandwidth(call,as,vs);
1957                 ms_message("Thread processing load: audio=%f\tvideo=%f",audio_load,video_load);
1958         }
1959 #ifdef VIDEO_ENABLED
1960         if (call->videostream!=NULL) {
1961                 OrtpEvent *ev;
1962
1963                 /* Ensure there is no dangling ICE check list. */
1964                 if (call->ice_session == NULL) call->videostream->ice_check_list = NULL;
1965
1966                 // Beware that the application queue should not depend on treatments fron the
1967                 // mediastreamer queue.
1968                 video_stream_iterate(call->videostream);
1969
1970                 while (call->videostream_app_evq && (NULL != (ev=ortp_ev_queue_get(call->videostream_app_evq)))){
1971                         OrtpEventType evt=ortp_event_get_type(ev);
1972                         OrtpEventData *evd=ortp_event_get_data(ev);
1973                         if (evt == ORTP_EVENT_ZRTP_ENCRYPTION_CHANGED){
1974                                 linphone_call_videostream_encryption_changed(call, evd->info.zrtp_stream_encrypted);
1975                         } else if (evt == ORTP_EVENT_RTCP_PACKET_RECEIVED) {
1976                                 call->stats[LINPHONE_CALL_STATS_VIDEO].round_trip_delay = rtp_session_get_round_trip_propagation(call->videostream->session);
1977                                 if(call->stats[LINPHONE_CALL_STATS_VIDEO].received_rtcp != NULL)
1978                                         freemsg(call->stats[LINPHONE_CALL_STATS_VIDEO].received_rtcp);
1979                                 call->stats[LINPHONE_CALL_STATS_VIDEO].received_rtcp = evd->packet;
1980                                 evd->packet = NULL;
1981                                 if (lc->vtable.call_stats_updated)
1982                                         lc->vtable.call_stats_updated(lc, call, &call->stats[LINPHONE_CALL_STATS_VIDEO]);
1983                         } else if (evt == ORTP_EVENT_RTCP_PACKET_EMITTED) {
1984                                 memcpy(&call->stats[LINPHONE_CALL_STATS_VIDEO].jitter_stats, rtp_session_get_jitter_stats(call->videostream->session), sizeof(jitter_stats_t));
1985                                 if(call->stats[LINPHONE_CALL_STATS_VIDEO].sent_rtcp != NULL)
1986                                         freemsg(call->stats[LINPHONE_CALL_STATS_VIDEO].sent_rtcp);
1987                                 call->stats[LINPHONE_CALL_STATS_VIDEO].sent_rtcp = evd->packet;
1988                                 evd->packet = NULL;
1989                                 if (lc->vtable.call_stats_updated)
1990                                         lc->vtable.call_stats_updated(lc, call, &call->stats[LINPHONE_CALL_STATS_VIDEO]);
1991                         } else if ((evt == ORTP_EVENT_ICE_SESSION_PROCESSING_FINISHED) || (evt == ORTP_EVENT_ICE_GATHERING_FINISHED)
1992                                 || (evt == ORTP_EVENT_ICE_LOSING_PAIRS_COMPLETED) || (evt == ORTP_EVENT_ICE_RESTART_NEEDED)) {
1993                                 handle_ice_events(call, ev);
1994                         }
1995                         ortp_event_destroy(ev);
1996                 }
1997         }
1998 #endif
1999         if (call->audiostream!=NULL) {
2000                 OrtpEvent *ev;
2001
2002                 /* Ensure there is no dangling ICE check list. */
2003                 if (call->ice_session == NULL) call->audiostream->ice_check_list = NULL;
2004
2005                 // Beware that the application queue should not depend on treatments fron the
2006                 // mediastreamer queue.
2007                 audio_stream_iterate(call->audiostream);
2008
2009                 while (call->audiostream_app_evq && (NULL != (ev=ortp_ev_queue_get(call->audiostream_app_evq)))){
2010                         OrtpEventType evt=ortp_event_get_type(ev);
2011                         OrtpEventData *evd=ortp_event_get_data(ev);
2012                         if (evt == ORTP_EVENT_ZRTP_ENCRYPTION_CHANGED){
2013                                 linphone_call_audiostream_encryption_changed(call, evd->info.zrtp_stream_encrypted);
2014                         } else if (evt == ORTP_EVENT_ZRTP_SAS_READY) {
2015                                 linphone_call_audiostream_auth_token_ready(call, evd->info.zrtp_sas.sas, evd->info.zrtp_sas.verified);
2016                         } else if (evt == ORTP_EVENT_RTCP_PACKET_RECEIVED) {
2017                                 call->stats[LINPHONE_CALL_STATS_AUDIO].round_trip_delay = rtp_session_get_round_trip_propagation(call->audiostream->session);
2018                                 if(call->stats[LINPHONE_CALL_STATS_AUDIO].received_rtcp != NULL)
2019                                         freemsg(call->stats[LINPHONE_CALL_STATS_AUDIO].received_rtcp);
2020                                 call->stats[LINPHONE_CALL_STATS_AUDIO].received_rtcp = evd->packet;
2021                                 evd->packet = NULL;
2022                                 if (lc->vtable.call_stats_updated)
2023                                         lc->vtable.call_stats_updated(lc, call, &call->stats[LINPHONE_CALL_STATS_AUDIO]);
2024                         } else if (evt == ORTP_EVENT_RTCP_PACKET_EMITTED) {
2025                                 memcpy(&call->stats[LINPHONE_CALL_STATS_AUDIO].jitter_stats, rtp_session_get_jitter_stats(call->audiostream->session), sizeof(jitter_stats_t));
2026                                 if(call->stats[LINPHONE_CALL_STATS_AUDIO].sent_rtcp != NULL)
2027                                         freemsg(call->stats[LINPHONE_CALL_STATS_AUDIO].sent_rtcp);
2028                                 call->stats[LINPHONE_CALL_STATS_AUDIO].sent_rtcp = evd->packet;
2029                                 evd->packet = NULL;
2030                                 if (lc->vtable.call_stats_updated)
2031                                         lc->vtable.call_stats_updated(lc, call, &call->stats[LINPHONE_CALL_STATS_AUDIO]);
2032                         } else if ((evt == ORTP_EVENT_ICE_SESSION_PROCESSING_FINISHED) || (evt == ORTP_EVENT_ICE_GATHERING_FINISHED)
2033                                 || (evt == ORTP_EVENT_ICE_LOSING_PAIRS_COMPLETED) || (evt == ORTP_EVENT_ICE_RESTART_NEEDED)) {
2034                                 handle_ice_events(call, ev);
2035                         } else if (evt==ORTP_EVENT_TELEPHONE_EVENT){
2036                                 linphone_core_dtmf_received(lc,evd->info.telephone_event);
2037                         }
2038                         ortp_event_destroy(ev);
2039                 }
2040         }
2041         if (call->state==LinphoneCallStreamsRunning && one_second_elapsed && call->audiostream!=NULL && disconnect_timeout>0 )
2042                 disconnected=!audio_stream_alive(call->audiostream,disconnect_timeout);
2043         if (disconnected)
2044                 linphone_core_disconnected(call->core,call);
2045 }
2046
2047 void linphone_call_log_completed(LinphoneCall *call){
2048         LinphoneCore *lc=call->core;
2049
2050         call->log->duration=time(NULL)-call->start_time;
2051
2052         if (call->log->status==LinphoneCallMissed){
2053                 char *info;
2054                 lc->missed_calls++;
2055                 info=ortp_strdup_printf(ngettext("You have missed %i call.",
2056                                          "You have missed %i calls.", lc->missed_calls),
2057                                 lc->missed_calls);
2058         if (lc->vtable.display_status!=NULL)
2059             lc->vtable.display_status(lc,info);
2060                 ms_free(info);
2061         }
2062         lc->call_logs=ms_list_prepend(lc->call_logs,(void *)call->log);
2063         if (ms_list_size(lc->call_logs)>lc->max_call_logs){
2064                 MSList *elem,*prevelem=NULL;
2065                 /*find the last element*/
2066                 for(elem=lc->call_logs;elem!=NULL;elem=elem->next){
2067                         prevelem=elem;
2068                 }
2069                 elem=prevelem;
2070                 linphone_call_log_destroy((LinphoneCallLog*)elem->data);
2071                 lc->call_logs=ms_list_remove_link(lc->call_logs,elem);
2072         }
2073         if (lc->vtable.call_log_updated!=NULL){
2074                 lc->vtable.call_log_updated(lc,call->log);
2075         }
2076         call_logs_write_to_config_file(lc);
2077 }
2078
2079 LinphoneCallState linphone_call_get_transfer_state(LinphoneCall *call) {
2080         return call->transfer_state;
2081 }
2082
2083 void linphone_call_set_transfer_state(LinphoneCall* call, LinphoneCallState state) {
2084         if (state != call->transfer_state) {
2085                 LinphoneCore* lc = call->core;
2086                 call->transfer_state = state;
2087                 if (lc->vtable.transfer_state_changed)
2088                         lc->vtable.transfer_state_changed(lc, call, state);
2089         }
2090 }
2091
2092 bool_t linphone_call_is_in_conference(const LinphoneCall *call) {
2093         return call->params.in_conference;
2094 }