lsd.c 6.09 KB
Newer Older
Simon Morlat's avatar
Simon Morlat committed
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
/*
linphone
Copyright (C) 2010 Simon MORLAT (simon.morlat@linphone.org)

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/

/* Linphone Sound Daemon: is a lightweight utility to play sounds to speaker during a conversation.
 This is useful for embedded platforms, where sound apis are not performant enough to allow
 simultaneous sound access.
*/

#include "linphonecore_utils.h"
#include "mediastreamer2/mssndcard.h"
Simon Morlat's avatar
Simon Morlat committed
27 28 29 30
#include "mediastreamer2/msaudiomixer.h"
#include "mediastreamer2/mschanadapter.h"
#include "mediastreamer2/msfileplayer.h"

Simon Morlat's avatar
Simon Morlat committed
31 32 33 34 35 36 37 38 39 40 41


#define MAX_BRANCHES 10


struct _LsdPlayer{
	struct _LinphoneSoundDaemon *lsd;
	MSFilter *player;
	MSFilter *rateconv;
	MSFilter *chanadapter;
	LsdEndOfPlayCallback eop_cb;
Simon Morlat's avatar
Simon Morlat committed
42
	int mixer_pin;
Simon Morlat's avatar
Simon Morlat committed
43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61
	void *user_data;
};

struct _LinphoneSoundDaemon {
	int out_rate;
	int out_nchans;
	MSFilter *mixer;
	MSFilter *soundout;
	LsdPlayer branches[MAX_BRANCHES];
};

LsdPlayer *linphone_sound_daemon_get_player(LinphoneSoundDaemon *obj){
	int i;
	for(i=0;i<MAX_BRANCHES;++i){
		LsdPlayer *b=&obj->branches[i];
		MSFilter *p=b->player;
		int state;
		ms_filter_call_method(p,MS_PLAYER_GET_STATE,&state);
		if (state==MSPlayerClosed){
Simon Morlat's avatar
Simon Morlat committed
62
			lsd_player_set_gain(b,1);
Simon Morlat's avatar
Simon Morlat committed
63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89
			return b;
		}
	}
	ms_warning("No more free players !");
	return NULL;
}

void linphone_sound_daemon_release_player(LinphoneSoundDaemon *obj, LsdPlayer * player){
	int state;
	ms_filter_call_method(player->player,MS_PLAYER_GET_STATE,&state);
	if (state!=MSPlayerClosed){
		ms_filter_call_method(player->player,MS_PLAYER_CLOSE,&state);
	}
}

int lsd_player_stop(LsdPlayer *p){
	ms_filter_call_method_noarg(p->player,MS_PLAYER_PAUSE);
	return 0;
}

MSFilter *linphone_sound_daemon_get_proxy(LinphoneSoundDaemon *obj);
void linphone_sound_daemon_destroy(LinphoneSoundDaemon *obj);

static void lsd_player_init(LsdPlayer *p, MSConnectionPoint mixer, MSFilterId playerid, LinphoneSoundDaemon *lsd){
	MSConnectionHelper h;
	p->player=ms_filter_new(playerid);
	p->rateconv=ms_filter_new(MS_RESAMPLE_ID);
Simon Morlat's avatar
Simon Morlat committed
90 91
	p->chanadapter=ms_filter_new(MS_CHANNEL_ADAPTER_ID);
	
Simon Morlat's avatar
Simon Morlat committed
92 93 94 95 96
	ms_connection_helper_start(&h);
	ms_connection_helper_link(&h,p->player,-1,0);
	ms_connection_helper_link(&h,p->rateconv,0,0);
	ms_connection_helper_link(&h,p->chanadapter,0,0);
	ms_connection_helper_link(&h,mixer.filter,mixer.pin,-1);
Simon Morlat's avatar
Simon Morlat committed
97
	p->mixer_pin=mixer.pin;
Simon Morlat's avatar
Simon Morlat committed
98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151
	p->lsd=lsd;
}

static void lsd_player_uninit(LsdPlayer *p, MSConnectionPoint mixer){
	MSConnectionHelper h;

	ms_connection_helper_start(&h);
	ms_connection_helper_unlink (&h,p->player,-1,0);
	ms_connection_helper_unlink(&h,p->rateconv,0,0);
	ms_connection_helper_unlink(&h,p->chanadapter,0,0);
	ms_connection_helper_unlink(&h,mixer.filter,mixer.pin,-1);

	ms_filter_destroy(p->player);
	ms_filter_destroy(p->rateconv);
	ms_filter_destroy(p->chanadapter);
}

void lsd_player_set_callback(LsdPlayer *p, LsdEndOfPlayCallback cb){
	p->eop_cb=cb;
}

void lsd_player_set_user_pointer(LsdPlayer *p, void *up){
	p->user_data=up;
}

void *lsd_player_get_user_pointer(LsdPlayer *p){
	return p->user_data;
}

static void lsd_player_on_eop(void * userdata, unsigned int id, void *arg){
}

int lsd_player_play(LsdPlayer *b, const char *filename ){
	int rate,chans;
	int state;
	LinphoneSoundDaemon *lsd=b->lsd;
	
	ms_filter_call_method(b->player,MS_PLAYER_GET_STATE,&state);
	if (state!=MSPlayerClosed){
		ms_filter_call_method_noarg(b->player,MS_PLAYER_CLOSE);
	}
	
	if (ms_filter_call_method(b->player,MS_PLAYER_OPEN,(void*)filename)!=0){
		return -1;
	}
	ms_filter_call_method(b->player,MS_FILTER_GET_SAMPLE_RATE,&rate);
	ms_filter_call_method(b->player,MS_FILTER_GET_NCHANNELS,&chans);
	ms_filter_set_notify_callback (b->player,lsd_player_on_eop,b);
	
	ms_filter_call_method(b->rateconv,MS_FILTER_SET_SAMPLE_RATE,&rate);
	ms_filter_call_method(b->rateconv,MS_FILTER_SET_NCHANNELS,&chans);
	ms_filter_call_method(b->rateconv,MS_FILTER_SET_OUTPUT_SAMPLE_RATE,&lsd->out_rate);

	ms_filter_call_method(b->chanadapter,MS_FILTER_SET_NCHANNELS,&chans);
Simon Morlat's avatar
Simon Morlat committed
152
	ms_filter_call_method(b->chanadapter,MS_CHANNEL_ADAPTER_SET_OUTPUT_NCHANNELS,&lsd->out_nchans);
Simon Morlat's avatar
Simon Morlat committed
153 154 155 156
	return 0;
}

int lsd_player_stop(LsdPlayer *p);
Simon Morlat's avatar
Simon Morlat committed
157 158 159 160 161 162 163 164 165 166 167 168 169 170

void lsd_player_enable_loop(LsdPlayer *p, bool_t loopmode){
	if (ms_filter_get_id(p->player)==MS_FILE_PLAYER_ID){
		int arg=loopmode ? 0 : -1;
		ms_filter_call_method(p->player,MS_FILE_PLAYER_LOOP,&arg);
	}
}

void lsd_player_set_gain(LsdPlayer *p, float gain){
	MSAudioMixerCtl gainctl;
	gainctl.pin=p->mixer_pin;
	gainctl.gain=gain;
	ms_filter_call_method(p->lsd->mixer,MS_AUDIO_MIXER_SET_INPUT_GAIN,&gainctl);
}
Simon Morlat's avatar
Simon Morlat committed
171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194

LinphoneSoundDaemon * linphone_sound_daemon_new(const char *cardname){
	int i;
	MSConnectionPoint mp;
	LinphoneSoundDaemon *lsd;
	MSSndCard *card=ms_snd_card_manager_get_card(
	                                             ms_snd_card_manager_get(),
	                                             cardname);
	if (card==NULL){
		card=ms_snd_card_manager_get_default_playback_card (
		                                                    ms_snd_card_manager_get());
		if (card==NULL){
			ms_error("linphone_sound_daemon_new(): No playback soundcard available");
			return NULL;
		}
	}
	
	lsd=ms_new0(LinphoneSoundDaemon,1);
	lsd->soundout=ms_snd_card_create_writer(card);
	lsd->out_rate=44100;
	lsd->out_nchans=2;
	ms_filter_call_method(lsd->soundout,MS_FILTER_SET_SAMPLE_RATE,&lsd->out_rate);
	ms_filter_call_method(lsd->soundout,MS_FILTER_SET_NCHANNELS,&lsd->out_nchans);

Simon Morlat's avatar
Simon Morlat committed
195
	mp.filter=lsd->mixer;
Simon Morlat's avatar
Simon Morlat committed
196 197 198 199 200
	mp.pin=0;

	lsd_player_init(&lsd->branches[0],mp,MS_ITC_SINK_ID,lsd);
	for(i=1;i<MAX_BRANCHES;++i){
		mp.pin=i;
Simon Morlat's avatar
Simon Morlat committed
201
		lsd_player_init(&lsd->branches[i],mp,MS_FILE_PLAYER_ID,lsd);
Simon Morlat's avatar
Simon Morlat committed
202 203 204 205 206
	}
	
	return lsd;
}