www.pudn.com > Bluegammon蓝牙的应用编程.rar > Audio.java

// Copyright (c) 2005 Sony Ericsson Mobile Communications AB 
// 
// This software is provided "AS IS," without a warranty of any kind.  
// ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,  
// INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A  
// PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED.  
// 
// THIS SOFTWARE IS COMPLEMENTARY OF JAYWAY AB (www.jayway.se) 
 
package bluegammon; 
 
import java.io.IOException; 
 
import javax.microedition.media.Manager; 
import javax.microedition.media.MediaException; 
import javax.microedition.media.Player; 
 
 
/** 
 * 
 
 * Audio manager. Contains one player for each sound. 
 * 
 
 * Implementation note: the format of the sound is hardcoded 
 * in method playSound. 
 * 
 
 *  
 * @author Peter Andersson 
 */ 
public class Audio 
{ 
  /** Jazzy background music */ 
  public static final int MUSIC = 0; 
  /** Dices hitting board, long sound */ 
  public static final int DICES_LONG = 1; 
  /** Dices hitting board, short sound */ 
  public static final int DICES_SHORT = 2; 
  /** Piece sound */ 
  public static final int PIECE = 3; 
  /** Message sound */ 
  public static final int MESSAGE = 4; 
  /** Connection failed sound */ 
  public static final int CONN_FAIL = 5; 
  /** Winner sound */ 
  public static final int WINNER = 6; 
  /** Loser sound */ 
  public static final int LOSER = 7; 
   
  /** The media players */ 
  protected static Player[] m_sounds = new Player[8]; 
  /** Current playing player index */ 
  protected static int m_currentPlayer = -1; 
   
  protected static final String TYPE_AMR = "audio/amr"; 
  protected static final String TYPE_MIDI = "audio/midi"; 
   
  /** 
   * Starts playing specified sound, one of Audio.MUSIC,  
   * Audio.DICES_LONG, Audio.DICES_SHORT, 
   * Audio.PIECE. If there is another sound playing, 
   * it is stopped. 
   * @param snd		The id of the sound to play. 
   */ 
  public synchronized static void playSound(int snd) 
  { 
    // Start sound 
    if (!RmsFacade.getBoolean(Bluegammon.AUDIO_OFF)) 
    { 
      // No player, create one 
      if (m_sounds[snd] == null) 
      { 
        createSound(snd); 
      } 
       
      // Start player 
      Player player = m_sounds[snd]; 
      if (player != null) 
      { 
        try 
        { 
          player.start(); 
          m_currentPlayer = snd; 
        } 
        catch (MediaException e) 
        { 
          e.printStackTrace(); 
        } 
      } 
    } 
  } 
   
  /** 
   * Stops specified sound if it is playing. 
   * @param snd		The id of the sound to stop. 
   */ 
  public synchronized static void stopSound(int snd) 
  { 
    if (m_sounds[snd] != null) 
    { 
      try 
      { 
        m_sounds[snd].stop(); 
      } 
      catch (MediaException e) 
      { 
        e.printStackTrace(); 
      } 
    } 
  } 
 
  /** 
   * Stops all sounds and cleans up resources. 
   */ 
  public static void shutdown() 
  { 
    for (int i = 0; i < m_sounds.length; i++) 
    { 
      stopSound(i); 
      if (m_sounds[i] != null) 
      { 
        m_sounds[i].deallocate(); 
      } 
    } 
  } 
   
  /** 
   * Creates a player for specified sound 
   * and popuplates the Player array. 
   * @param snd	The sound to create 
   */ 
  protected static void createSound(int snd) 
  { 
    try 
    { 
      int rsc = 0; 
      String type = TYPE_AMR; 
      switch(snd) 
      { 
      case MUSIC: 
        type = TYPE_MIDI; 
        rsc = Resources.SND_JAZZY; 
        break; 
      case MESSAGE: 
        type = TYPE_MIDI; 
        rsc = Resources.SND_MESSAGE; 
        break; 
      case CONN_FAIL: 
        type = TYPE_MIDI; 
        rsc = Resources.SND_CONNFAIL; 
        break; 
      case WINNER: 
        type = TYPE_MIDI; 
        rsc = Resources.SND_WINNER; 
        break; 
      case LOSER: 
        type = TYPE_MIDI; 
        rsc = Resources.SND_LOSER; 
        break; 
      case DICES_LONG: 
        rsc = Resources.SND_DICES_LONG; 
        break; 
      case DICES_SHORT: 
        rsc = Resources.SND_DICES_SHORT; 
        break; 
      case PIECE: 
        rsc = Resources.SND_PIECE; 
        break; 
      } 
      m_sounds[snd] =  
        Manager.createPlayer(Resources.getResource(rsc), type); 
      if (snd == MUSIC) 
      { 
        m_sounds[snd].setLoopCount(-1);		// loop intro tune for ever and ever 
      } 
    } 
    catch (IOException e) 
    { 
      e.printStackTrace(); 
    } 
    catch (MediaException e) 
    { 
      e.printStackTrace(); 
    } 
  } 
 
  /** Prevent instantiation */ 
  private Audio() {} 
}