ManagerAudio.java

/*
  * This file is part of WhereYouGo.
  *
  * WhereYouGo 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.
  *
  * WhereYouGo 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 WhereYouGo.  If not, see <http://www.gnu.org/licenses/>.
  *
  * Copyright (C) 2012 Menion <whereyougo@asamm.cz>
  */ 

package menion.android.whereyougo.utils.audio;

import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.util.Hashtable;

import menion.android.whereyougo.R;
import menion.android.whereyougo.utils.A;
import menion.android.whereyougo.utils.FileSystem;
import menion.android.whereyougo.utils.Logger;
import menion.android.whereyougo.utils.Utils;
import android.content.Context;
import android.content.Intent;
import android.media.AudioManager;
import android.media.SoundPool;

/**
 * @author menion
 * @since 15.3.2010 2010
 */
public class ManagerAudio {

	private static final String TAG = "ManagerAudio";
	
	public static final int SOUND_POOL_BEEP = 1001;
	
	private SoundPool soundPool;
	private Hashtable<Integer, Integer> soundPoolMap;
	
	public ManagerAudio() {
    	soundPool = new SoundPool(10, AudioManager.STREAM_MUSIC, 0);
    	soundPoolMap = new Hashtable<Integer, Integer>();
    	soundPoolMap.put(SOUND_POOL_BEEP, soundPool.load(A.getApp(), R.raw.sound_beep_01, 1));
	}
	
	public void putAudio(int audioId, String fileName, String fileEnd, InputStream is) {
		try {
			byte[] data = new byte[is.available()];
			is.read(data);
			Utils.closeStream(is);
			String filePath = FileSystem.ROOT + FileSystem.CACHE_AUDIO + Utils.hashString(fileName) + "." + fileEnd;
			FileSystem.saveBytes(filePath, data);
			soundPoolMap.put(audioId, soundPool.load(filePath, 1));
		} catch (Exception e) {
			Logger.e(TAG, "putAudio(" + audioId + ", " + fileName + ", " + is + ")", e);
		}
	}
	
	public void putAudio(int audioId, String filePath) {
		try {
			soundPoolMap.put(audioId, soundPool.load(filePath, 1));
		} catch (Exception e) {
			Logger.e(TAG, "putAudio(" + audioId + ")", e);
		}
	}
	
	public void removeAudio(int audioId) {
		try {
			soundPool.unload(audioId);
			soundPoolMap.remove(audioId);
		} catch (Exception e) {
			Logger.e(TAG, "removeAudio(" + audioId + ")", e);
		}
	}
	
	private long lastVolumeCheck;
	private float volume;
	
	public void playSound(int sound) {
		if (volume == 0.0f || (System.currentTimeMillis() - lastVolumeCheck) > 1000) {
			/* The next 4 lines calculate the current volume in a scale of 0.0 to 1.0 */  
			AudioManager mgr = (AudioManager) A.getMain().getSystemService(Context.AUDIO_SERVICE);  
			float streamVolumeCurrent = mgr.getStreamVolume(AudioManager.STREAM_MUSIC);  
			float streamVolumeMax = mgr.getStreamMaxVolume(AudioManager.STREAM_MUSIC);      
			volume = streamVolumeCurrent / streamVolumeMax;
			lastVolumeCheck = System.currentTimeMillis();
		}
       
		/* Play the sound with the correct volume */  
		soundPool.play(soundPoolMap.get(sound), volume, volume, 1, 0, 1f);       
	} 
	
	public void playMp3File(String fileName, String fileEnd, InputStream is) {
		try {
			// load data
			byte[] data = new byte[is.available()];
			is.read(data);
			Utils.closeStream(is);

			// write data
			File fileMp3 = new File(FileSystem.ROOT + FileSystem.CACHE_AUDIO + fileName + fileEnd);
			if (fileMp3.exists())
				fileMp3.delete();
			fileMp3.getParentFile().mkdirs();
			
			FileOutputStream fos = new FileOutputStream(fileMp3);
	        fos.write(data);
	        fos.flush();
	        Utils.closeStream(fos);
//Logger.d(TAG, "playMp3File(), file:" + fileMp3.getAbsolutePath() + ", " + fileMp3.exists());

	        // version 01 - good for MP3, wrong on WAV for unknown reason
//	        new AudioClip(fileMp3.getAbsolutePath(), false).play();
	        // version 02 - as service
	        Intent intent = new Intent(A.getMain(), AudioPlayService.class);
	        intent.putExtra(AudioPlayService.EXTRA_FILEPATHS, fileMp3.getAbsolutePath());
	        intent.putExtra(AudioPlayService.EXTRA_DELETE_FILE, false);
	        intent.putExtra(AudioPlayService.EXTRA_PLAY_AS_NOTIFICATION, false);
	        A.getMain().startService(intent);
		} catch (Exception e) {
			Logger.e(TAG, "playMp3File(" + fileName + ", " + fileEnd + ", " + is + ")", e);
		}
	}
}