Android Open Source - feup-lpoo-android-tower-defense Android Music

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License

The source code is released under:

MIT License

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Java Source Code

package pt.up.fe.lpoo.framework.implementation;
//  w w  w . ja  va 2 s.  c  o  m
import java.io.IOException;

import pt.up.fe.lpoo.framework.Music;

import android.content.res.AssetFileDescriptor;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnCompletionListener;
import android.media.MediaPlayer.OnPreparedListener;
import android.media.MediaPlayer.OnSeekCompleteListener;
import android.media.MediaPlayer.OnVideoSizeChangedListener;

/**
 * Information about the implementation of the framework can be found at
 *  http://www.kilobolt.com/day-6-the-android-game-framework-part-ii.html
 *  
 *  Adapted to restart music on stopping
 */
public class AndroidMusic implements Music, OnCompletionListener, OnSeekCompleteListener, OnPreparedListener, OnVideoSizeChangedListener {
  MediaPlayer mediaPlayer;
  boolean isPrepared = false;

  public AndroidMusic(AssetFileDescriptor assetDescriptor) {
    mediaPlayer = new MediaPlayer();
    try {
      mediaPlayer.setDataSource(assetDescriptor.getFileDescriptor(),
          assetDescriptor.getStartOffset(),
          assetDescriptor.getLength());
      mediaPlayer.prepare();
      isPrepared = true;
      mediaPlayer.setOnCompletionListener(this);
      mediaPlayer.setOnSeekCompleteListener(this);
      mediaPlayer.setOnPreparedListener(this);
      mediaPlayer.setOnVideoSizeChangedListener(this);

    } catch (Exception e) {
      throw new RuntimeException("Couldn't load music");
    }
  }

  @Override
  public void dispose() {

    if (this.mediaPlayer.isPlaying()){
      this.mediaPlayer.stop();
    }
    this.mediaPlayer.release();
  }

  @Override
  public boolean isLooping() {
    return mediaPlayer.isLooping();
  }

  @Override
  public boolean isPlaying() {
    return this.mediaPlayer.isPlaying();
  }

  @Override
  public boolean isStopped() {
    return !isPrepared;
  }

  @Override
  public void pause() {
    if (this.mediaPlayer.isPlaying())
      mediaPlayer.pause();
  }



  @Override
  public void play() {
    if (this.mediaPlayer.isPlaying())
      return;

    try {
      synchronized (this) {
        if (!isPrepared)
          mediaPlayer.prepare();
        mediaPlayer.start();
      }
    } catch (IllegalStateException e) {
      e.printStackTrace();
    } catch (IOException e) {
      e.printStackTrace();
    }
  }

  @Override
  public void setLooping(boolean isLooping) {
    mediaPlayer.setLooping(isLooping);
  }

  @Override
  public void setVolume(float volume) {
    mediaPlayer.setVolume(volume, volume);
  }

  @Override
  public void stop() {
    if (this.mediaPlayer.isPlaying() == true){
      this.mediaPlayer.pause();
      this.seekBegin();
      this.mediaPlayer.stop();

      synchronized (this) {
        isPrepared = false;
      }
    }
  }

  @Override
  public void onCompletion(MediaPlayer player) {
    synchronized (this) {
      isPrepared = false;
    }
  }

  @Override
  public void seekBegin() {
    mediaPlayer.seekTo(0);   
  }


  @Override
  public void onPrepared(MediaPlayer player) {
    synchronized (this) {
      isPrepared = true;
    }

  }

  @Override
  public void onSeekComplete(MediaPlayer player) {       
  }

  @Override
  public void onVideoSizeChanged(MediaPlayer player, int width, int height) {       
  }
}

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