GameSound.java

/**
 *  This file is part of the Bonsai Game Library.
 *
 *  The Bonsai Game Library 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 3 of the License, or
 *  (at your option) any later version.
 *
 *  The Bonsai Game Library 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 the Bonsai Game Library.  If not, see <http://www.gnu.org/licenses/>.
 *  
 */

package org.bonsai.dev;

import java.io.InputStream;
import java.util.HashMap;
import java.util.Map;

import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.DataLine;
import javax.sound.sampled.SourceDataLine;

public class GameSound extends GameComponent {
	private Map<String, Class<? extends SoundObject>> soundTypes = new HashMap<String, Class<? extends SoundObject>>();
	private Map<String, byte[]> sounds = new HashMap<String, byte[]>();
	private Map<String, SoundObject> soundsStatus = new HashMap<String, SoundObject>();
	private Map<String, Class<? extends SoundObject>> soundEngines = new HashMap<String, Class<? extends SoundObject>>();

	public GameSound(final Game game) {
		super(game);
	}

	public void addType(final String ext,
			final Class<? extends SoundObject> sound) {
		soundEngines.put(ext, sound);
	}

	public final boolean load(final String id, final String filename) {
		Class<? extends SoundObject> type = null;
		for (String ext : soundEngines.keySet()) {
			if (filename.toLowerCase().endsWith(ext)) {
				type = soundEngines.get(ext);
				break;
			}
		}
		if (type == null) {
			return false;
		}

		try {
			final InputStream stream = this.getClass().getResourceAsStream(filename);
			final int size = stream.available();
			final byte[] bytes = new byte[size];
			int offset = 0;
			int numRead;
			while (offset < bytes.length
					&& (numRead = stream.read(bytes, offset, bytes.length
							- offset)) >= 0) {
				offset += numRead;
			}
			sounds.put(id, bytes);
			soundTypes.put(id, type);
			stream.close();
			return true;

		} catch (Exception e) {
			return false;
		}
	}

	public final boolean isPlaying(final String id) {
		if (soundsStatus.containsKey(id)) {
			return soundsStatus.get(id).status == 1;
		} else {
			return false;
		}
	}

	public final boolean isPaused(final String id) {
		if (soundsStatus.containsKey(id)) {
			return soundsStatus.get(id).status == 3;
		} else {
			return false;
		}
	}

	public final void stop(final String id) {
		if (soundsStatus.containsKey(id)) {
			soundsStatus.get(id).status = 2;
		}
	}

	public final void pause(final String id, final boolean pause) {
		if (soundsStatus.containsKey(id)) {
			if (soundsStatus.get(id).status != 2) {
				soundsStatus.get(id).status = pause ? 3 : 1;
			}
		}
	}

	public final void setVolume(final String id, final float volume) {
		if (soundsStatus.containsKey(id)) {
			soundsStatus.get(id).volume = volume;
			soundsStatus.get(id).toVolume = volume;
		}
	}

	public final void setFadeVolume(final String id, final float volume,
			final int time) {
		if (soundsStatus.containsKey(id)) {
			soundsStatus.get(id).toVolumeDifference = Math.abs(soundsStatus
					.get(id).volume
					- volume);
			soundsStatus.get(id).toVolume = volume;
			soundsStatus.get(id).volumeChanged = true;
			soundsStatus.get(id).toVolumeTime = time;
		}
	}

	public final boolean isSilent(final String id) {
		if (soundsStatus.containsKey(id)) {
			return soundsStatus.get(id).volume == 0.0f;
		} else {
			return true;
		}
	}

	public final void play(final String id, final boolean stop) {
		play(id, stop, false, 1.0f);
	}

	public final void play(final String id, final boolean stop,
			final boolean loop, final float volume) {
		if (game.hasSound() && sounds.containsKey(id)) {
			if (isPlaying(id) && stop) {
				soundsStatus.get(id).status = 2;
			}
			soundsStatus.put(id, null);
			try {
				final SoundObject snd = soundTypes.get(id).newInstance();
				snd.setDaemon(true);
				snd.setName(snd.getTypeName() + "-SoundThread-" + id);
				snd.loop = loop;
				snd.volume = volume;
				snd.toVolume = volume;
				snd.initSound(sounds.get(id));
				snd.start();
				soundsStatus.put(id, snd);

			} catch (InstantiationException e) {
				e.printStackTrace();
			} catch (IllegalAccessException e) {
				e.printStackTrace();
			}
		}
	}

	public final boolean delete(final String id) {
		if (soundsStatus.containsKey(id)) {
			sounds.remove(id);
			soundTypes.remove(id);
			soundsStatus.remove(id);
			return true;
		} else {
			return false;
		}
	}

	public final void stopAll() {
		for (String id : sounds.keySet()) {
			stop(id);
		}
	}

	public final void pauseAll(final boolean mode) {
		for (String id : sounds.keySet()) {
			pause(id, mode);
		}
	}

	public final boolean init() {
		final AudioFormat[] formats = new AudioFormat[] {
				new AudioFormat(44100.0f, 16, 2, true, false),
				new AudioFormat(22050.0f, 16, 2, true, false),
				new AudioFormat(11050.0f, 16, 2, true, false) };

		for (AudioFormat format : formats) {
			try {
				DataLine.Info info = new DataLine.Info(SourceDataLine.class,
						format);
				SourceDataLine line = (SourceDataLine) AudioSystem
						.getLine(info);
				line.open(format);
				line.start();
				line.close();
				return true;

			} catch (Exception e) {
				e.printStackTrace();
			}
		}
		return false;
	}

}