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                 ctx->conf=ms_audio_conference_new();
  33         }
  34 }
  35
  36 static void remove_local_endpoint(LinphoneConference *ctx){
  37         if (ctx->local_endpoint){
  38                 ms_audio_conference_remove_member(ctx->conf,ctx->local_endpoint);
  39                 ms_audio_endpoint_release_from_stream(ctx->local_endpoint);
  40                 ctx->local_endpoint=NULL;
  41                 audio_stream_stop(ctx->local_participant);
  42                 ctx->local_participant=NULL;
  43         }
  44 }
  45
  46 void linphone_core_conference_check_uninit(LinphoneConference *ctx){
  47         if (ctx->conf){
  48                 ms_message("conference_check_uninit(): nmembers=%i",ctx->conf->nmembers);
  49                 if (ctx->conf->nmembers==1 && ctx->local_participant!=NULL){
  50                         remove_local_endpoint(ctx);
  51                 }
  52                 if (ctx->conf->nmembers==0){
  53                         ms_audio_conference_destroy(ctx->conf);
  54                         ctx->conf=NULL;
  55                 }
  56         }
  57 }
  58
  59
  60 void linphone_call_add_to_conf(LinphoneCall *call){
  61         LinphoneCore *lc=call->core;
  62         LinphoneConference *conf=&lc->conf_ctx;
  63         MSAudioEndpoint *ep;
  64         ep=ms_audio_endpoint_get_from_stream(call->audiostream,TRUE);
  65         ms_audio_conference_add_member(conf->conf,ep);
  66         call->endpoint=ep;
  67 }
  68
  69 void linphone_call_remove_from_conf(LinphoneCall *call){
  70         LinphoneCore *lc=call->core;
  71         LinphoneConference *conf=&lc->conf_ctx;
  72
  73         ms_audio_conference_remove_member(conf->conf,call->endpoint);
  74         ms_audio_endpoint_release_from_stream(call->endpoint);
  75         call->endpoint=NULL;
  76 }
  77
  78 static void add_local_endpoint(LinphoneConference *conf,LinphoneCore *lc){
  79         /*create a dummy audiostream in order to extract the local part of it */
  80         /* network address and ports have no meaning and are not used here. */
  81         AudioStream *st=audio_stream_new(65000,FALSE);
  82         MSSndCard *playcard=lc->sound_conf.lsd_card ?
  83                         lc->sound_conf.lsd_card : lc->sound_conf.play_sndcard;
  84         MSSndCard *captcard=lc->sound_conf.capt_sndcard;
  85
  86         audio_stream_start_full(st, &av_profile,
  87                                 "127.0.0.1",
  88                                 65000,
  89                                 65001,
  90                                 0,
  91                                 40,
  92                                 NULL,
  93                                 NULL,
  94                                 playcard,
  95                                 captcard,
  96                                 linphone_core_echo_cancellation_enabled(lc)
  97                                 );
  98         _post_configure_audio_stream(st,lc,FALSE);
  99         conf->local_participant=st;
 100         conf->local_endpoint=ms_audio_endpoint_get_from_stream(st,FALSE);
 101         ms_audio_conference_add_member(conf->conf,conf->local_endpoint);
 102 }
 103
 104 float linphone_core_get_conference_local_input_volume(LinphoneCore *lc){
 105         LinphoneConference *conf=&lc->conf_ctx;
 106         AudioStream *st=conf->local_participant;
 107         if (st && st->volsend && !conf->local_muted){
 108                 float vol=0;
 109                 ms_filter_call_method(st->volsend,MS_VOLUME_GET,&vol);
 110                 return vol;
 111
 112         }
 113         return LINPHONE_VOLUME_DB_LOWEST;
 114 }
 115
 116 int linphone_core_add_to_conference(LinphoneCore *lc, LinphoneCall *call){
 117         LinphoneCallParams params;
 118         LinphoneConference *conf=&lc->conf_ctx;
 119
 120         if (call->current_params.in_conference){
 121                 ms_error("Already in conference");
 122                 return -1;
 123         }
 124         conference_check_init(&lc->conf_ctx);
 125         call->params.in_conference=TRUE;
 126         call->params.has_video=FALSE;
 127         params=call->params;
 128         if (call->state==LinphoneCallPaused)
 129                 linphone_core_resume_call(lc,call);
 130         else if (call->state==LinphoneCallStreamsRunning){
 131                 /*this will trigger a reINVITE that will later redraw the streams */
 132                 if (call->audiostream || call->videostream)
 133                         linphone_call_stop_media_streams (call); /*free the audio & video local resources*/
 134                 linphone_core_update_call(lc,call,&params);
 135                 add_local_endpoint(conf,lc);
 136         }else{
 137                 ms_error("Call is in state %s, it cannot be added to the conference.",linphone_call_state_to_string(call->state));
 138                 return -1;
 139         }
 140         return 0;
 141 }
 142
 143 int linphone_core_remove_from_conference(LinphoneCore *lc, LinphoneCall *call){
 144         int err=0;
 145         if (!call->current_params.in_conference){
 146                 if (call->params.in_conference){
 147                         ms_warning("Not (yet) in conference, be patient");
 148                         return -1;
 149                 }else{
 150                         ms_error("Not in a conference.");
 151                         return -1;
 152                 }
 153         }
 154         call->params.in_conference=FALSE;
 155         err=linphone_core_pause_call(lc,call);
 156         return err;
 157 }
 158
 159 bool_t linphone_core_is_in_conference(const LinphoneCore *lc){
 160         return lc->conf_ctx.local_participant!=NULL;
 161 }
 162
 163 int linphone_core_leave_conference(LinphoneCore *lc){
 164         LinphoneConference *conf=&lc->conf_ctx;
 165         if (linphone_core_is_in_conference(lc))
 166                 remove_local_endpoint(conf);
 167         return 0;
 168 }
 169
 170
 171 int linphone_core_enter_conference(LinphoneCore *lc){
 172         LinphoneConference *conf=&lc->conf_ctx;
 173         if (conf->local_participant==NULL) add_local_endpoint(conf,lc);
 174         return 0;
 175 }
 176
 177 int linphone_core_add_all_to_conference(LinphoneCore *lc) {
 178         MSList *calls=lc->calls;
 179         while (calls) {
 180                 LinphoneCall *call=(LinphoneCall*)calls->data;
 181                 calls=calls->next;
 182                 if (!call->current_params.in_conference) {
 183                         linphone_core_add_to_conference(lc, call);
 184                 }
 185         }
 186         return 0;
 187 }
 188
 189 int linphone_core_terminate_conference(LinphoneCore *lc) {
 190         MSList *calls=lc->calls;
 191         while (calls) {
 192                 LinphoneCall *call=(LinphoneCall*)calls->data;
 193                 calls=calls->next;
 194                 if (call->current_params.in_conference) {
 195                         linphone_core_terminate_call(lc, call);
 196                 }
 197         }
 198         return 0;
 199 }
 200
 201 int linphone_core_get_conference_size(LinphoneCore *lc) {
 202         return ms_audio_conference_size(lc->conf_ctx.conf);
 203 }