f@0: /*  
f@0:  CCmI Editor - A Collaborative Cross-Modal Diagram Editing Tool
f@0:   
f@0:  Copyright (C) 2011  Queen Mary University of London (http://ccmi.eecs.qmul.ac.uk/)
f@0: 
f@0:  This program is free software: you can redistribute it and/or modify
f@0:  it under the terms of the GNU General Public License as published by
f@0:  the Free Software Foundation, either version 3 of the License, or
f@0:  (at your option) any later version.
f@0: 
f@0:  This program is distributed in the hope that it will be useful,
f@0:  but WITHOUT ANY WARRANTY; without even the implied warranty of
f@0:  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
f@0:  GNU General Public License for more details.
f@0: 
f@0:  You should have received a copy of the GNU General Public License
f@0:  along with this program.  If not, see <http://www.gnu.org/licenses/>.
f@0: */  
f@0: 
f@0: package uk.ac.qmul.eecs.ccmi.sound;
f@0: 
f@0: import java.io.InputStream;
f@0: import java.util.EnumMap;
f@0: import java.util.Map;
f@0: 
f@0: import net.beadsproject.beads.core.AudioContext;
f@0: import net.beadsproject.beads.core.Bead;
f@0: import net.beadsproject.beads.core.UGen;
f@0: import net.beadsproject.beads.data.Sample;
f@0: import net.beadsproject.beads.data.SampleManager;
f@0: import net.beadsproject.beads.ugens.Gain;
f@0: import net.beadsproject.beads.ugens.SamplePlayer;
f@0: import net.beadsproject.beads.ugens.SamplePlayer.LoopType;
f@0: 
f@0: /**
f@0:  * The Sound interface implementation using the Beads library.
f@0:  * For more info about the library see http://www.beadsproject.net/.
f@0:  */
f@0: class BeadsSound implements Sound {
f@0: 	
f@0: 	public BeadsSound(){
f@0: 		ac = new AudioContext();
f@0: 		playerListeners = new EnumMap<SoundEvent,PlayerListener>(SoundEvent.class);
f@0: 		loopPlayers = new EnumMap<SoundEvent,UGen>(SoundEvent.class);
f@0: 		
f@0: 		/* pre load all the sample to avoid future overhead */
f@0: 		for(SoundEvent key : AudioResourcesService.eventTypes()){
f@0: 			SampleManager.sample(AudioResourcesService.getAudiofile(key));
f@0: 		}
f@0: 		ac.start();
f@0: 	}
f@0: 	
f@0: 
f@0: 	public void play(InputStream sound, final PlayerListener playerListener) {
f@0: 		if(mute)
f@0: 			return;
f@0: 		SamplePlayer player;
f@0: 		Sample sample = null; 
f@0: 		if(sound != null)
f@0: 			sample = SampleManager.sample(sound);
f@0: 		if(sample == null){
f@0: 			/* we got problems retrieving the sample to play 
f@0: 			*  call the playerListener method and return */
f@0: 			if(playerListener != null)
f@0: 				playerListener.playEnded();
f@0: 			return;
f@0: 		}
f@0: 		player = new SamplePlayer(ac,sample);
f@0: 		player.setKillOnEnd(true);
f@0: 		final Gain g = new Gain(ac,1,MASTER_VOLUME); 
f@0: 		g.addInput(player);
f@0: 		
f@0: 		Bead killBill; 
f@0: 		if(playerListener != null){
f@0: 			killBill = new Bead(){
f@0: 				@Override
f@0: 				protected void messageReceived(Bead message){
f@0: 					playerListener.playEnded();
f@0: 					g.kill();
f@0: 					playingBead = null;
f@0: 				}
f@0: 			};
f@0: 		}else{
f@0: 			killBill = new Bead(){
f@0: 				@Override
f@0: 				protected void messageReceived(Bead message){
f@0: 					g.kill();
f@0: 					playingBead = null;
f@0: 				}
f@0: 			};
f@0: 		}
f@0: 		
f@0: 		player.setKillListener(killBill);
f@0: 		playingBead = g;
f@0: 		ac.out.addInput(g);
f@0: 	}
f@0: 
f@0: 	public void play(InputStream sound){
f@0: 		play(sound, null);
f@0: 	}
f@0: 	
f@0: 	@Override
f@0: 	public void play(final SoundEvent evt ){
f@0: 		if(evt == null){
f@0: 			InputStream s = null;
f@0: 			play(s);
f@0: 		}else
f@0: 			play(evt,playerListeners.get(evt));
f@0: 	}
f@0: 	
f@0: 	public void play(SoundEvent evt, PlayerListener playerListener){
f@0: 		if(evt == null){
f@0: 			InputStream s = null;
f@0: 			play(s,playerListener);
f@0: 		}else
f@0: 			play(AudioResourcesService.getAudiofile(evt),playerListener);
f@0: 	}
f@0: 	
f@0: 	public void stop(){
f@0: 		if(mute)
f@0: 			return;
f@0: 		if(playingBead != null){
f@0: 			playingBead.setKillListener(null);
f@0: 			playingBead.kill();
f@0: 		}
f@0: 	}
f@0: 	
f@0: 	public void loadSound(InputStream sound){
f@0: 		SampleManager.sample(sound);
f@0: 	}
f@0: 	
f@0: 	@Override
f@0: 	public void startLoop(SoundEvent action) {
f@0: 		if(mute)
f@0: 			return;
f@0: 		Sample sample = null; 
f@0: 		if(action != null){
f@0: 			InputStream samplePath = AudioResourcesService.getAudiofile(action);
f@0: 			if(samplePath != null)
f@0: 				sample = SampleManager.sample(samplePath);
f@0: 		}
f@0: 		if(sample == null)
f@0: 			return;
f@0: 		SamplePlayer player = new SamplePlayer(ac,sample);
f@0: 		player.setLoopType(LoopType.LOOP_FORWARDS);
f@0: 		Gain g = new Gain(ac,1,MASTER_VOLUME); 
f@0: 		g.addInput(player);
f@0: 		ac.out.addInput(g);
f@0: 		loopPlayers.put(action, g);
f@0: 	}
f@0: 
f@0: 	@Override
f@0: 	public void stopLoop(SoundEvent action) {
f@0: 		UGen g = loopPlayers.get(action);
f@0: 		if(g != null){
f@0: 			g.kill();
f@0: 			loopPlayers.remove(action);
f@0: 		}
f@0: 	}
f@0: 
f@0: 	@Override
f@0: 	public void setDefaultPlayerListener(PlayerListener listener, SoundEvent type){
f@0: 		playerListeners.put(type, listener);
f@0: 	}
f@0: 	
f@0: 	@Override
f@0: 	public void setMuted(boolean mute){
f@0: 		this.mute = mute;
f@0: 	}
f@0: 	
f@0: 	@Override
f@0: 	public void dispose(){
f@0: 		ac.stop();
f@0: 	}
f@0: 	
f@0: 	private AudioContext ac;	
f@0: 	private Bead playingBead;
f@0: 	private Map<SoundEvent,PlayerListener> playerListeners;
f@0: 	private Map<SoundEvent,UGen> loopPlayers;
f@0: 	private static final float MASTER_VOLUME = 0.35f;
f@0: 	private boolean mute;
f@0: }