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

   1 /***************************************************************************
   2  *            conference.c
   3  *
   4  *  Mon Sep 12, 2011
   5  *  Copyright  2011  Belledonne Communications
   6  *  Author: Simon Morlat
   7  *  Email simon dot morlat at linphone dot org
   8  ****************************************************************************/
   9
  10 /*
  11  *  This program is free software; you can redistribute it and/or modify
  12  *  it under the terms of the GNU General Public License as published by
  13  *  the Free Software Foundation; either version 2 of the License, or
  14  *  (at your option) any later version.
  15  *
  16  *  This program is distributed in the hope that it will be useful,
  17  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  *  GNU General Public License for more details.
  20  *
  21  *  You should have received a copy of the GNU General Public License
  22  *  along with this program; if not, write to the Free Software
  23  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  24  */
  25
  26 #include "private.h"
  27
  28 #include "mediastreamer2/msvolume.h"
  29
  30 static void conference_check_init(LinphoneConference *ctx){
  31         if (ctx->conf==NULL){
  32                 MSAudioConferenceParams params;
  33                 params.samplerate=16000;
  34                 ctx->conf=ms_audio_conference_new(&params);
  35         }
  36 }
  37
  38 static void remove_local_endpoint(LinphoneConference *ctx){
  39         if (ctx->local_endpoint){
  40                 ms_audio_conference_remove_member(ctx->conf,ctx->local_endpoint);
  41                 ms_audio_endpoint_release_from_stream(ctx->local_endpoint);
  42                 ctx->local_endpoint=NULL;
  43                 audio_stream_stop(ctx->local_participant);
  44                 ctx->local_participant=NULL;
  45         }
  46 }
  47
  48 void linphone_core_conference_check_uninit(LinphoneConference *ctx){
  49         if (ctx->conf){
  50                 ms_message("conference_check_uninit(): nmembers=%i",ctx->conf->nmembers);
  51                 if (ctx->conf->nmembers==1 && ctx->local_participant!=NULL){
  52                         remove_local_endpoint(ctx);
  53                 }
  54                 if (ctx->conf->nmembers==0){
  55                         ms_audio_conference_destroy(ctx->conf);
  56                         ctx->conf=NULL;
  57                 }
  58         }
  59 }
  60
  61
  62 void linphone_call_add_to_conf(LinphoneCall *call){
  63         LinphoneCore *lc=call->core;
  64         LinphoneConference *conf=&lc->conf_ctx;
  65         MSAudioEndpoint *ep;
  66         call->params.has_video = FALSE;
  67         call->camera_active = FALSE;
  68         ep=ms_audio_endpoint_get_from_stream(call->audiostream,TRUE);
  69         ms_audio_conference_add_member(conf->conf,ep);
  70         call->endpoint=ep;
  71 }
  72
  73 void linphone_call_remove_from_conf(LinphoneCall *call){
  74         LinphoneCore *lc=call->core;
  75         LinphoneConference *conf=&lc->conf_ctx;
  76
  77         ms_audio_conference_remove_member(conf->conf,call->endpoint);
  78         ms_audio_endpoint_release_from_stream(call->endpoint);
  79         call->endpoint=NULL;
  80 }
  81
  82 static RtpProfile *make_dummy_profile(int samplerate){
  83         RtpProfile *prof=rtp_profile_new("dummy");
  84         PayloadType *pt=payload_type_clone(&payload_type_l16_mono);
  85         pt->clock_rate=samplerate;
  86         rtp_profile_set_payload(prof,0,pt);
  87         return prof;
  88 }
  89
  90 static void add_local_endpoint(LinphoneConference *conf,LinphoneCore *lc){
  91         /*create a dummy audiostream in order to extract the local part of it */
  92         /* network address and ports have no meaning and are not used here. */
  93         AudioStream *st=audio_stream_new(65000,FALSE);
  94         MSSndCard *playcard=lc->sound_conf.lsd_card ?
  95                         lc->sound_conf.lsd_card : lc->sound_conf.play_sndcard;
  96         MSSndCard *captcard=lc->sound_conf.capt_sndcard;
  97         const MSAudioConferenceParams *params=ms_audio_conference_get_params(conf->conf);
  98         RtpProfile *prof=make_dummy_profile(params->samplerate);
  99
 100         audio_stream_start_full(st, prof,
 101                                 "127.0.0.1",
 102                                 65000,
 103                                 65001,
 104                                 0,
 105                                 40,
 106                                 NULL,
 107                                 NULL,
 108                                 playcard,
 109                                 captcard,
 110                                 linphone_core_echo_cancellation_enabled(lc)
 111                                 );
 112         _post_configure_audio_stream(st,lc,FALSE);
 113         conf->local_participant=st;
 114         conf->local_endpoint=ms_audio_endpoint_get_from_stream(st,FALSE);
 115         ms_audio_conference_add_member(conf->conf,conf->local_endpoint);
 116         /*normally and exceptionnaly, the profile is no more accessed past this point*/
 117         rtp_profile_destroy(prof);
 118 }
 119
 120 float linphone_core_get_conference_local_input_volume(LinphoneCore *lc){
 121         LinphoneConference *conf=&lc->conf_ctx;
 122         AudioStream *st=conf->local_participant;
 123         if (st && st->volsend && !conf->local_muted){
 124                 float vol=0;
 125                 ms_filter_call_method(st->volsend,MS_VOLUME_GET,&vol);
 126                 return vol;
 127
 128         }
 129         return LINPHONE_VOLUME_DB_LOWEST;
 130 }
 131
 132 int linphone_core_add_to_conference(LinphoneCore *lc, LinphoneCall *call){
 133         LinphoneCallParams params;
 134         LinphoneConference *conf=&lc->conf_ctx;
 135
 136         if (call->current_params.in_conference){
 137                 ms_error("Already in conference");
 138                 return -1;
 139         }
 140         conference_check_init(&lc->conf_ctx);
 141         call->params.in_conference=TRUE;
 142         call->params.has_video=FALSE;
 143         call->params.media_encryption=LinphoneMediaEncryptionNone;
 144         params=call->params;
 145         if (call->state==LinphoneCallPaused)
 146                 linphone_core_resume_call(lc,call);
 147         else if (call->state==LinphoneCallStreamsRunning){
 148                 /*this will trigger a reINVITE that will later redraw the streams */
 149                 if (call->audiostream || call->videostream){
 150                         linphone_call_stop_media_streams (call); /*free the audio & video local resources*/
 151                 }
 152                 if (call==lc->current_call){
 153                         lc->current_call=NULL;
 154                 }
 155                 linphone_core_update_call(lc,call,&params);
 156                 add_local_endpoint(conf,lc);
 157         }else{
 158                 ms_error("Call is in state %s, it cannot be added to the conference.",linphone_call_state_to_string(call->state));
 159                 return -1;
 160         }
 161         return 0;
 162 }
 163
 164 int linphone_core_remove_from_conference(LinphoneCore *lc, LinphoneCall *call){
 165         int err=0;
 166         if (!call->current_params.in_conference){
 167                 if (call->params.in_conference){
 168                         ms_warning("Not (yet) in conference, be patient");
 169                         return -1;
 170                 }else{
 171                         ms_error("Not in a conference.");
 172                         return -1;
 173                 }
 174         }
 175         call->params.in_conference=FALSE;
 176         err=linphone_core_pause_call(lc,call);
 177         return err;
 178 }
 179
 180 bool_t linphone_core_is_in_conference(const LinphoneCore *lc){
 181         return lc->conf_ctx.local_participant!=NULL;
 182 }
 183
 184 int linphone_core_leave_conference(LinphoneCore *lc){
 185         LinphoneConference *conf=&lc->conf_ctx;
 186         if (linphone_core_is_in_conference(lc))
 187                 remove_local_endpoint(conf);
 188         return 0;
 189 }
 190
 191
 192 int linphone_core_enter_conference(LinphoneCore *lc){
 193         if (linphone_core_sound_resources_locked(lc)) {
 194                 return -1;
 195         }
 196         LinphoneConference *conf=&lc->conf_ctx;
 197         if (conf->local_participant==NULL) add_local_endpoint(conf,lc);
 198         return 0;
 199 }
 200
 201 int linphone_core_add_all_to_conference(LinphoneCore *lc) {
 202         MSList *calls=lc->calls;
 203         while (calls) {
 204                 LinphoneCall *call=(LinphoneCall*)calls->data;
 205                 calls=calls->next;
 206                 if (!call->current_params.in_conference) {
 207                         linphone_core_add_to_conference(lc, call);
 208                 }
 209         }
 210         return 0;
 211 }
 212
 213 int linphone_core_terminate_conference(LinphoneCore *lc) {
 214         MSList *calls=lc->calls;
 215         while (calls) {
 216                 LinphoneCall *call=(LinphoneCall*)calls->data;
 217                 calls=calls->next;
 218                 if (call->current_params.in_conference) {
 219                         linphone_core_terminate_call(lc, call);
 220                 }
 221         }
 222         return 0;
 223 }
 224
 225 int linphone_core_get_conference_size(LinphoneCore *lc) {
 226         return ms_audio_conference_size(lc->conf_ctx.conf);
 227 }