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

   1 /*
   2 linphone
   3 Copyright (C) 2010 Simon MORLAT (simon.morlat@linphone.org)
   4
   5 This program is free software; you can redistribute it and/or
   6 modify it under the terms of the GNU General Public License
   7 as published by the Free Software Foundation; either version 2
   8 of the License, or (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18 */
  19
  20 /* Linphone Sound Daemon: is a lightweight utility to play sounds to speaker during a conversation.
  21  This is useful for embedded platforms, where sound apis are not performant enough to allow
  22  simultaneous sound access.
  23 */
  24
  25 #include "linphonecore_utils.h"
  26 #include "private.h"
  27 #include "mediastreamer2/msticker.h"
  28 #include "mediastreamer2/mssndcard.h"
  29 #include "mediastreamer2/msaudiomixer.h"
  30 #include "mediastreamer2/mschanadapter.h"
  31 #include "mediastreamer2/msfileplayer.h"
  32 #include "mediastreamer2/msitc.h"
  33
  34
  35 static struct _MSSndCard *linphone_sound_daemon_get_proxy_card(LinphoneSoundDaemon *obj);
  36
  37 #define MAX_BRANCHES 10
  38
  39
  40 struct _LsdPlayer{
  41         struct _LinphoneSoundDaemon *lsd;
  42         MSFilter *player;
  43         MSFilter *rateconv;
  44         MSFilter *chanadapter;
  45         LsdEndOfPlayCallback eop_cb;
  46         int mixer_pin;
  47         void *user_data;
  48         bool_t loop;
  49         bool_t pad[3];
  50 };
  51
  52 struct _LinphoneSoundDaemon {
  53         int out_rate;
  54         int out_nchans;
  55         MSFilter *mixer;
  56         MSFilter *soundout;
  57         MSFilter *itcsink;
  58         MSTicker *ticker;
  59         MSSndCard *proxycard;
  60         LsdPlayer branches[MAX_BRANCHES];
  61 };
  62
  63 static MSFilter *create_writer(MSSndCard *c){
  64         LinphoneSoundDaemon *lsd=(LinphoneSoundDaemon*)c->data;
  65         lsd->itcsink=ms_filter_new(MS_ITC_SINK_ID);
  66         ms_filter_call_method(lsd->itcsink,MS_ITC_SINK_CONNECT,lsd->branches[0].player);
  67         return lsd->itcsink;
  68 }
  69
  70 static MSSndCardDesc proxycard={
  71         "Linphone Sound Daemon",
  72         /*detect*/ NULL,
  73         /*init*/ NULL,
  74         NULL,
  75         NULL,
  76         NULL,
  77         NULL,
  78         NULL,
  79         /*create_reader*/ NULL,
  80         create_writer,
  81         /*uninit,*/
  82 };
  83
  84 LsdPlayer *linphone_sound_daemon_get_player(LinphoneSoundDaemon *obj){
  85         int i;
  86         for(i=1;i<MAX_BRANCHES;++i){
  87                 LsdPlayer *b=&obj->branches[i];
  88                 MSFilter *p=b->player;
  89                 int state;
  90                 ms_filter_call_method(p,MS_PLAYER_GET_STATE,&state);
  91                 if (state==MSPlayerClosed){
  92                         lsd_player_set_gain(b,1);
  93                         lsd_player_enable_loop (b,FALSE);
  94                         return b;
  95                 }
  96         }
  97         ms_warning("No more free players !");
  98         return NULL;
  99 }
 100
 101 void linphone_sound_daemon_release_player(LinphoneSoundDaemon *obj, LsdPlayer * player){
 102         int state;
 103         ms_filter_call_method(player->player,MS_PLAYER_GET_STATE,&state);
 104         if (state!=MSPlayerClosed){
 105                 ms_filter_call_method(player->player,MS_PLAYER_CLOSE,&state);
 106         }
 107 }
 108
 109 LinphoneSoundDaemon *lsd_player_get_daemon(const LsdPlayer *p){
 110         return p->lsd;
 111 }
 112
 113 int lsd_player_stop(LsdPlayer *p){
 114         ms_filter_call_method_noarg(p->player,MS_PLAYER_PAUSE);
 115         return 0;
 116 }
 117
 118 static void lsd_player_init(LsdPlayer *p, MSConnectionPoint mixer, MSFilterId playerid, LinphoneSoundDaemon *lsd){
 119         MSConnectionHelper h;
 120         p->player=ms_filter_new(playerid);
 121         p->rateconv=ms_filter_new(MS_RESAMPLE_ID);
 122         p->chanadapter=ms_filter_new(MS_CHANNEL_ADAPTER_ID);
 123
 124         ms_connection_helper_start(&h);
 125         ms_connection_helper_link(&h,p->player,-1,0);
 126         ms_connection_helper_link(&h,p->rateconv,0,0);
 127         ms_connection_helper_link(&h,p->chanadapter,0,0);
 128         ms_connection_helper_link(&h,mixer.filter,mixer.pin,-1);
 129         p->mixer_pin=mixer.pin;
 130         p->loop=FALSE;
 131         p->lsd=lsd;
 132 }
 133
 134 static void lsd_player_uninit(LsdPlayer *p, MSConnectionPoint mixer){
 135         MSConnectionHelper h;
 136
 137         ms_connection_helper_start(&h);
 138         ms_connection_helper_unlink (&h,p->player,-1,0);
 139         ms_connection_helper_unlink(&h,p->rateconv,0,0);
 140         ms_connection_helper_unlink(&h,p->chanadapter,0,0);
 141         ms_connection_helper_unlink(&h,mixer.filter,mixer.pin,-1);
 142
 143         ms_filter_destroy(p->player);
 144         ms_filter_destroy(p->rateconv);
 145         ms_filter_destroy(p->chanadapter);
 146 }
 147
 148 void lsd_player_set_callback(LsdPlayer *p, LsdEndOfPlayCallback cb){
 149         p->eop_cb=cb;
 150 }
 151
 152 void lsd_player_set_user_pointer(LsdPlayer *p, void *up){
 153         p->user_data=up;
 154 }
 155
 156 void *lsd_player_get_user_pointer(const LsdPlayer *p){
 157         return p->user_data;
 158 }
 159
 160 static void lsd_player_on_eop(void * userdata, unsigned int id, void *arg){
 161         LsdPlayer *p=(LsdPlayer *)userdata;
 162         if (p->eop_cb!=NULL)
 163                 p->eop_cb(p);
 164 }
 165
 166 int lsd_player_play(LsdPlayer *b, const char *filename ){
 167         int rate,chans;
 168         int state;
 169         LinphoneSoundDaemon *lsd=b->lsd;
 170
 171         ms_filter_call_method(b->player,MS_PLAYER_GET_STATE,&state);
 172         if (state!=MSPlayerClosed){
 173                 ms_filter_call_method_noarg(b->player,MS_PLAYER_CLOSE);
 174         }
 175
 176         if (ms_filter_call_method(b->player,MS_PLAYER_OPEN,(void*)filename)!=0){
 177                 ms_warning("Could not play %s",filename);
 178                 return -1;
 179         }
 180         ms_filter_call_method(b->player,MS_FILTER_GET_SAMPLE_RATE,&rate);
 181         ms_filter_call_method(b->player,MS_FILTER_GET_NCHANNELS,&chans);
 182         ms_filter_set_notify_callback (b->player,lsd_player_on_eop,b);
 183
 184         ms_filter_call_method(b->rateconv,MS_FILTER_SET_SAMPLE_RATE,&rate);
 185         ms_filter_call_method(b->rateconv,MS_FILTER_SET_NCHANNELS,&chans);
 186         ms_filter_call_method(b->rateconv,MS_FILTER_SET_OUTPUT_SAMPLE_RATE,&lsd->out_rate);
 187
 188         ms_filter_call_method(b->chanadapter,MS_FILTER_SET_NCHANNELS,&chans);
 189         ms_filter_call_method(b->chanadapter,MS_CHANNEL_ADAPTER_SET_OUTPUT_NCHANNELS,&lsd->out_nchans);
 190         ms_filter_call_method_noarg (b->player,MS_PLAYER_START);
 191         return 0;
 192 }
 193
 194 void lsd_player_enable_loop(LsdPlayer *p, bool_t loopmode){
 195         if (ms_filter_get_id(p->player)==MS_FILE_PLAYER_ID){
 196                 int arg=loopmode ? 0 : -1;
 197                 ms_filter_call_method(p->player,MS_FILE_PLAYER_LOOP,&arg);
 198                 p->loop=loopmode;
 199         }
 200 }
 201
 202 bool_t lsd_player_loop_enabled(const LsdPlayer *p){
 203         return p->loop;
 204 }
 205
 206 void lsd_player_set_gain(LsdPlayer *p, float gain){
 207         MSAudioMixerCtl gainctl;
 208         gainctl.pin=p->mixer_pin;
 209         gainctl.gain=gain;
 210         ms_filter_call_method(p->lsd->mixer,MS_AUDIO_MIXER_SET_INPUT_GAIN,&gainctl);
 211 }
 212
 213 LinphoneSoundDaemon * linphone_sound_daemon_new(const char *cardname){
 214         int i;
 215         MSConnectionPoint mp;
 216         LinphoneSoundDaemon *lsd;
 217         MSSndCard *card=ms_snd_card_manager_get_card(
 218                                                      ms_snd_card_manager_get(),
 219                                                      cardname);
 220         if (card==NULL){
 221                 card=ms_snd_card_manager_get_default_playback_card (
 222                                                                     ms_snd_card_manager_get());
 223                 if (card==NULL){
 224                         ms_error("linphone_sound_daemon_new(): No playback soundcard available");
 225                         return NULL;
 226                 }
 227         }
 228
 229         lsd=ms_new0(LinphoneSoundDaemon,1);
 230         lsd->soundout=ms_snd_card_create_writer(card);
 231         lsd->mixer=ms_filter_new(MS_AUDIO_MIXER_ID);
 232         lsd->itcsink=ms_filter_new(MS_ITC_SINK_ID);
 233         lsd->out_rate=44100;
 234         lsd->out_nchans=2;
 235         ms_filter_call_method(lsd->soundout,MS_FILTER_SET_SAMPLE_RATE,&lsd->out_rate);
 236         ms_filter_call_method(lsd->soundout,MS_FILTER_SET_NCHANNELS,&lsd->out_nchans);
 237         ms_filter_call_method(lsd->mixer,MS_FILTER_SET_SAMPLE_RATE,&lsd->out_rate);
 238         ms_filter_call_method(lsd->mixer,MS_FILTER_SET_NCHANNELS,&lsd->out_nchans);
 239
 240         mp.filter=lsd->mixer;
 241         mp.pin=0;
 242
 243         lsd_player_init(&lsd->branches[0],mp,MS_ITC_SOURCE_ID,lsd);
 244         for(i=1;i<MAX_BRANCHES;++i){
 245                 mp.pin=i;
 246                 lsd_player_init(&lsd->branches[i],mp,MS_FILE_PLAYER_ID,lsd);
 247         }
 248         ms_filter_link(lsd->mixer,0,lsd->soundout,0);
 249         lsd->ticker=ms_ticker_new();
 250         ms_ticker_attach(lsd->ticker,lsd->soundout);
 251
 252         lsd->proxycard=ms_snd_card_new(&proxycard);
 253         lsd->proxycard->data=lsd;
 254
 255         return lsd;
 256 }
 257
 258 void linphone_sound_daemon_destroy(LinphoneSoundDaemon *obj){
 259         int i;
 260         MSConnectionPoint mp;
 261         ms_ticker_detach(obj->ticker,obj->soundout);
 262         mp.filter=obj->mixer;
 263         for(i=0;i<MAX_BRANCHES;++i){
 264                 mp.pin=i;
 265                 lsd_player_uninit (&obj->branches[i],mp);
 266         }
 267         ms_filter_unlink(obj->mixer,0,obj->soundout,0);
 268         ms_ticker_destroy(obj->ticker);
 269         ms_filter_destroy(obj->soundout);
 270         ms_filter_destroy(obj->mixer);
 271         ms_filter_destroy(obj->itcsink);
 272 }
 273
 274 MSSndCard *linphone_sound_daemon_get_proxy_card(LinphoneSoundDaemon *lsd){
 275         return lsd->proxycard;
 276 }
 277
 278 void linphone_core_use_sound_daemon(LinphoneCore *lc, LinphoneSoundDaemon *lsd){
 279         lc->sound_conf.lsd_card=linphone_sound_daemon_get_proxy_card (lsd);
 280 }