/*******************************************************************************
 * Copyright 2011 See AUTHORS file.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/

package com.badlogic.gdx.assets.loaders;

import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.assets.AssetDescriptor;
import com.badlogic.gdx.assets.AssetLoaderParameters;
import com.badlogic.gdx.assets.AssetManager;
import com.badlogic.gdx.audio.Sound;
import com.badlogic.gdx.files.FileHandle;
import com.badlogic.gdx.utils.Array;

/** {@link AssetLoader} to load {@link Sound} instances.
 * @author mzechner */
public class SoundLoader extends AsynchronousAssetLoader<Sound, SoundLoader.SoundParameter> {

	private Sound sound;

	public SoundLoader (FileHandleResolver resolver) {
		super(resolver);
	}

	/** Returns the {@link Sound} instance currently loaded by this
	 * {@link SoundLoader}.
	 * 
	 * @return the currently loaded {@link Sound}, otherwise {@code null} if
	 *         no {@link Sound} has been loaded yet. */
	protected Sound getLoadedSound () {
		return sound;
	}
	
	@Override
	public void loadAsync (AssetManager manager, String fileName, FileHandle file, SoundParameter parameter) {
		sound = Gdx.audio.newSound(file);
	}

	@Override
	public Sound loadSync (AssetManager manager, String fileName, FileHandle file, SoundParameter parameter) {
		Sound sound = this.sound;
		this.sound = null;
		return sound;
	}

	@Override
	public Array<AssetDescriptor> getDependencies (String fileName, FileHandle file, SoundParameter parameter) {
		return null;
	}

	static public class SoundParameter extends AssetLoaderParameters<Sound> {
	}

}