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

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