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         return lsd->itcsink;
  66 }
  67
  68 static MSSndCardDesc proxycard={
  69         "Linphone Sound Daemon",
  70         /*detect*/ NULL,
  71         /*init*/ NULL,
  72         NULL,
  73         NULL,
  74         NULL,
  75         NULL,
  76         NULL,
  77         /*create_reader*/ NULL,
  78         create_writer,
  79         /*uninit,*/
  80 };
  81
  82 LsdPlayer *linphone_sound_daemon_get_player(LinphoneSoundDaemon *obj){
  83         int i;
  84         for(i=1;i<MAX_BRANCHES;++i){
  85                 LsdPlayer *b=&obj->branches[i];
  86                 MSFilter *p=b->player;
  87                 int state;
  88                 ms_filter_call_method(p,MS_PLAYER_GET_STATE,&state);
  89                 if (state==MSPlayerClosed){
  90                         lsd_player_set_gain(b,1);
  91                         lsd_player_enable_loop (b,FALSE);
  92                         return b;
  93                 }
  94         }
  95         ms_warning("No more free players !");
  96         return NULL;
  97 }
  98
  99 void linphone_sound_daemon_release_player(LinphoneSoundDaemon *obj, LsdPlayer * player){
 100         int state;
 101         ms_filter_call_method(player->player,MS_PLAYER_GET_STATE,&state);
 102         if (state!=MSPlayerClosed){
 103                 ms_filter_call_method(player->player,MS_PLAYER_CLOSE,&state);
 104         }
 105 }
 106
 107 int lsd_player_stop(LsdPlayer *p){
 108         ms_filter_call_method_noarg(p->player,MS_PLAYER_PAUSE);
 109         return 0;
 110 }
 111
 112 static void lsd_player_init(LsdPlayer *p, MSConnectionPoint mixer, MSFilterId playerid, LinphoneSoundDaemon *lsd){
 113         MSConnectionHelper h;
 114         p->player=ms_filter_new(playerid);
 115         p->rateconv=ms_filter_new(MS_RESAMPLE_ID);
 116         p->chanadapter=ms_filter_new(MS_CHANNEL_ADAPTER_ID);
 117
 118         ms_connection_helper_start(&h);
 119         ms_connection_helper_link(&h,p->player,-1,0);
 120         ms_connection_helper_link(&h,p->rateconv,0,0);
 121         ms_connection_helper_link(&h,p->chanadapter,0,0);
 122         ms_connection_helper_link(&h,mixer.filter,mixer.pin,-1);
 123         p->mixer_pin=mixer.pin;
 124         p->loop=FALSE;
 125         p->lsd=lsd;
 126 }
 127
 128 static void lsd_player_uninit(LsdPlayer *p, MSConnectionPoint mixer){
 129         MSConnectionHelper h;
 130
 131         ms_connection_helper_start(&h);
 132         ms_connection_helper_unlink (&h,p->player,-1,0);
 133         ms_connection_helper_unlink(&h,p->rateconv,0,0);
 134         ms_connection_helper_unlink(&h,p->chanadapter,0,0);
 135         ms_connection_helper_unlink(&h,mixer.filter,mixer.pin,-1);
 136
 137         ms_filter_destroy(p->player);
 138         ms_filter_destroy(p->rateconv);
 139         ms_filter_destroy(p->chanadapter);
 140 }
 141
 142 void lsd_player_set_callback(LsdPlayer *p, LsdEndOfPlayCallback cb){
 143         p->eop_cb=cb;
 144 }
 145
 146 void lsd_player_set_user_pointer(LsdPlayer *p, void *up){
 147         p->user_data=up;
 148 }
 149
 150 void *lsd_player_get_user_pointer(const LsdPlayer *p){
 151         return p->user_data;
 152 }
 153
 154 static void lsd_player_on_eop(void * userdata, unsigned int id, void *arg){
 155         LsdPlayer *p=(LsdPlayer *)userdata;
 156         if (p->eop_cb!=NULL)
 157                 p->eop_cb(p);
 158 }
 159
 160 int lsd_player_play(LsdPlayer *b, const char *filename ){
 161         int rate,chans;
 162         int state;
 163         LinphoneSoundDaemon *lsd=b->lsd;
 164
 165         ms_filter_call_method(b->player,MS_PLAYER_GET_STATE,&state);
 166         if (state!=MSPlayerClosed){
 167                 ms_filter_call_method_noarg(b->player,MS_PLAYER_CLOSE);
 168         }
 169
 170         if (ms_filter_call_method(b->player,MS_PLAYER_OPEN,(void*)filename)!=0){
 171                 ms_warning("Could not play %s",filename);
 172                 return -1;
 173         }
 174         ms_filter_call_method(b->player,MS_FILTER_GET_SAMPLE_RATE,&rate);
 175         ms_filter_call_method(b->player,MS_FILTER_GET_NCHANNELS,&chans);
 176         ms_filter_set_notify_callback (b->player,lsd_player_on_eop,b);
 177
 178         ms_filter_call_method(b->rateconv,MS_FILTER_SET_SAMPLE_RATE,&rate);
 179         ms_filter_call_method(b->rateconv,MS_FILTER_SET_NCHANNELS,&chans);
 180         ms_filter_call_method(b->rateconv,MS_FILTER_SET_OUTPUT_SAMPLE_RATE,&lsd->out_rate);
 181
 182         ms_filter_call_method(b->chanadapter,MS_FILTER_SET_NCHANNELS,&chans);
 183         ms_filter_call_method(b->chanadapter,MS_CHANNEL_ADAPTER_SET_OUTPUT_NCHANNELS,&lsd->out_nchans);
 184         ms_filter_call_method_noarg (b->player,MS_PLAYER_START);
 185         return 0;
 186 }
 187
 188 void lsd_player_enable_loop(LsdPlayer *p, bool_t loopmode){
 189         if (ms_filter_get_id(p->player)==MS_FILE_PLAYER_ID){
 190                 int arg=loopmode ? 0 : -1;
 191                 ms_filter_call_method(p->player,MS_FILE_PLAYER_LOOP,&arg);
 192                 p->loop=loopmode;
 193         }
 194 }
 195
 196 bool_t lsd_player_loop_enabled(const LsdPlayer *p){
 197         return p->loop;
 198 }
 199
 200 void lsd_player_set_gain(LsdPlayer *p, float gain){
 201         MSAudioMixerCtl gainctl;
 202         gainctl.pin=p->mixer_pin;
 203         gainctl.gain=gain;
 204         ms_filter_call_method(p->lsd->mixer,MS_AUDIO_MIXER_SET_INPUT_GAIN,&gainctl);
 205 }
 206
 207 LinphoneSoundDaemon * linphone_sound_daemon_new(const char *cardname){
 208         int i;
 209         MSConnectionPoint mp;
 210         LinphoneSoundDaemon *lsd;
 211         MSSndCard *card=ms_snd_card_manager_get_card(
 212                                                      ms_snd_card_manager_get(),
 213                                                      cardname);
 214         if (card==NULL){
 215                 card=ms_snd_card_manager_get_default_playback_card (
 216                                                                     ms_snd_card_manager_get());
 217                 if (card==NULL){
 218                         ms_error("linphone_sound_daemon_new(): No playback soundcard available");
 219                         return NULL;
 220                 }
 221         }
 222
 223         lsd=ms_new0(LinphoneSoundDaemon,1);
 224         lsd->soundout=ms_snd_card_create_writer(card);
 225         lsd->mixer=ms_filter_new(MS_AUDIO_MIXER_ID);
 226         lsd->itcsink=ms_filter_new(MS_ITC_SINK_ID);
 227         lsd->out_rate=44100;
 228         lsd->out_nchans=2;
 229         ms_filter_call_method(lsd->soundout,MS_FILTER_SET_SAMPLE_RATE,&lsd->out_rate);
 230         ms_filter_call_method(lsd->soundout,MS_FILTER_SET_NCHANNELS,&lsd->out_nchans);
 231         ms_filter_call_method(lsd->mixer,MS_FILTER_SET_SAMPLE_RATE,&lsd->out_rate);
 232         ms_filter_call_method(lsd->mixer,MS_FILTER_SET_NCHANNELS,&lsd->out_nchans);
 233
 234         mp.filter=lsd->mixer;
 235         mp.pin=0;
 236
 237         lsd_player_init(&lsd->branches[0],mp,MS_ITC_SOURCE_ID,lsd);
 238         for(i=1;i<MAX_BRANCHES;++i){
 239                 mp.pin=i;
 240                 lsd_player_init(&lsd->branches[i],mp,MS_FILE_PLAYER_ID,lsd);
 241         }
 242         ms_filter_link(lsd->mixer,0,lsd->soundout,0);
 243         lsd->ticker=ms_ticker_new();
 244         ms_ticker_attach(lsd->ticker,lsd->soundout);
 245
 246         lsd->proxycard=ms_snd_card_new(&proxycard);
 247         lsd->proxycard->data=lsd;
 248
 249         ms_filter_call_method(lsd->itcsink,MS_ITC_SINK_CONNECT,lsd->branches[0].player);
 250
 251         return lsd;
 252 }
 253
 254 void linphone_sound_daemon_destroy(LinphoneSoundDaemon *obj){
 255         int i;
 256         MSConnectionPoint mp;
 257         ms_ticker_detach(obj->ticker,obj->soundout);
 258         mp.filter=obj->mixer;
 259         for(i=0;i<MAX_BRANCHES;++i){
 260                 mp.pin=i;
 261                 lsd_player_uninit (&obj->branches[i],mp);
 262         }
 263         ms_filter_unlink(obj->mixer,0,obj->soundout,0);
 264         ms_ticker_destroy(obj->ticker);
 265         ms_filter_destroy(obj->soundout);
 266         ms_filter_destroy(obj->mixer);
 267         ms_filter_destroy(obj->itcsink);
 268 }
 269
 270 MSSndCard *linphone_sound_daemon_get_proxy_card(LinphoneSoundDaemon *lsd){
 271         return lsd->proxycard;
 272 }
 273
 274 void linphone_core_use_sound_daemon(LinphoneCore *lc, LinphoneSoundDaemon *lsd){
 275         lc->sound_conf.lsd_card=linphone_sound_daemon_get_proxy_card (lsd);
 276 }