Android Open Source - umpire_buddy Audio System

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Back to project page umpire_buddy.
License

The source code is released under:
Apache License
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Java Source Code

package com.bluefairyapps.java.android.umpirebuddy.systems;
/* w  w  w  . j av a2s.  c o  m*/
import android.content.Context;
import android.media.AudioManager;
import android.speech.tts.TextToSpeech;
import android.speech.tts.TextToSpeech.OnInitListener;
import android.util.Log;

import com.bluefairyapps.java.android.umpirebuddy.R;
import com.bluefairyapps.java.android.umpirebuddy.enums.EventsEnum;
import com.bluefairyapps.java.android.umpirebuddy.event.Event;
import com.bluefairyapps.java.android.umpirebuddy.event.EventListener;

public class AudioSystem implements EventListener {
  private static final String TAG = AudioSystem.class.getSimpleName();
  
  private static final float TTS_PITCH = 0.5f;
  
  private static AudioSystem sInstance = null;
  private EventManager mEventManager;
  private Context mContext;
  private TextToSpeech mTts;
  
  private static boolean mEnabled = false;
  private boolean mTtsReady = false;
  
  public AudioSystem(Context context) {
    
    mContext = context;
    
    updateEnabled();
      
    mEventManager = EventManager.get();
    
    mEventManager.registerForEvent(this, EventsEnum.EVENT_AUDIO_STRIKE);
    mEventManager.registerForEvent(this, EventsEnum.EVENT_AUDIO_BALL);
    mEventManager.registerForEvent(this, EventsEnum.EVENT_BATTER_OUT);
    mEventManager.registerForEvent(this, EventsEnum.EVENT_BATTER_WALKS);
    mEventManager.registerForEvent(this, EventsEnum.EVENT_NEW_INNING);
    mEventManager.registerForEvent(this, EventsEnum.EVENT_NEW_GAME);
    mEventManager.registerForEvent(this, EventsEnum.EVENT_GAME_OVER);
    mEventManager.registerForEvent(this, EventsEnum.EVENT_TOGGLE_AUDIO);

    mTts = new TextToSpeech(mContext, new OnInitListener() {
      
      @Override
      public void onInit(int status) {
        
        if(status == TextToSpeech.SUCCESS) {

          mTtsReady = true;
          mTts.setPitch(TTS_PITCH);
        }
      }
    });
  }
  
  public static void init(Context context) {
        
    if(sInstance == null) {
      
      sInstance = new AudioSystem(context);
    }
  }
  
  public static AudioSystem get() {
    
    return sInstance;
  }
  
  public static boolean active() {
    
    return sInstance != null;
  }
  
  @Override
  public void onEvent(Event event) {

    Log.d(TAG, event.getType().name() + " received.");

    switch(event.getType()) {
    
    case EVENT_AUDIO_STRIKE: speakMessage(mContext.getString(R.string.tts_strike)); break;
    case EVENT_AUDIO_BALL: speakMessage(mContext.getString(R.string.tts_ball)); break;
    case EVENT_BATTER_OUT: speakMessage(mContext.getString(R.string.tts_batterOut)); break;
    case EVENT_BATTER_WALKS: speakMessage(mContext.getString(R.string.tts_batterWalks)); break;
    case EVENT_NEW_INNING: speakMessage(mContext.getString(R.string.tts_newInning)); break;
    case EVENT_NEW_GAME: newGame(); break;    
    case EVENT_GAME_OVER: gameOver(); break;
    case EVENT_TOGGLE_AUDIO: updateEnabled(); break;
    default: Log.d(TAG, "Unable to handle received event.");
    }
  }
  
  private void newGame() {
    
    speakMessage(mContext.getString(R.string.tts_newGame));
  }
  
  private void gameOver() {

    speakMessage(mContext.getString(R.string.tts_gameOver));
  }
  
  private void speakMessage(String message) {
    
    int ringerMode = 
        ((AudioManager) mContext.getSystemService(Context.AUDIO_SERVICE)).getRingerMode();
    
    if(mEnabled && mTtsReady && ringerMode == AudioManager.RINGER_MODE_NORMAL) {
      
      mTts.speak(message, TextToSpeech.QUEUE_ADD, null);
    }
  }
  
  private void updateEnabled() {
    
    mEnabled = mContext.getSharedPreferences(mContext.getString(R.string.pref_filename),
      Context.MODE_PRIVATE).getBoolean(mContext.getString(R.string.pref_audio_key), 
        Boolean.valueOf(mContext.getString(R.string.pref_audio_dflt)));
  }
  
  public void finish() {
    
    mTts.shutdown();    
    mEventManager.unregister(this);
    mTtsReady = false;
    sInstance = null;
  }

}
Java Source Code List
