/*
 * PlayMusicDemo.java
 *
 * Created on 2005年5月2日, 上午12:28
 */

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;

import javax.microedition.media.*;
/**
 *
 * @author  Liu Bin
 * @version
 */
public class PlayMusicDemo extends MIDlet implements CommandListener{
    private Display display;
    private Command cmdExit = new Command("退出", Command.STOP, 1);
    
    private List list;
    //list的內容
    private static final String[] items = {"播放MIDI音樂",
            "播放Wave音樂",
            "播放Mp3音樂",
            "播放iMelody音樂",
            "播放Amr音樂"
    };
    
    public PlayMusicDemo() {
        list = new List("播放不同格式聲音演示", List.IMPLICIT, items, null);
        list.addCommand(cmdExit);
        list.setCommandListener(this);
    }
    
    public void startApp() {
        display = Display.getDisplay(this);
        display.setCurrent(list);
    }
    
    public void pauseApp() {
    }
    
    public void destroyApp(boolean unconditional) {
    }
    
    /**
     * 命令按鈕事件
     */
    public void commandAction(Command c, Displayable d) {
        String label = c.getLabel();
        if (label.equals("退出")) {
            this.notifyDestroyed();
        }
        
        if (c == list.SELECT_COMMAND) {
            switch (list.getSelectedIndex()) {
                case 0:
                    playMIDI();
                    break;
                case 1:
                    playWave();
                    break;
                case 2:
                    playMp3();
                    break;
                case 3:
                    playIMelody();
                    break;
                case 4:
                    playAmr();
                    break;
            }
        }
    }
    
    //用于播放MIDI文件
    private void playMIDI() {
        try {
            java.io.InputStream is = getClass().getResourceAsStream("/1.mid");
            Player player = Manager.createPlayer(is, "audio/midi");
            player.realize();
            player.prefetch();
            player.start();
        } catch(Exception e) {
            System.out.println("g播放MIDI音樂發生異常：" + e.toString());
        }
    }
    //用于播放Wave文件
    private void playWave() {
        try {
            java.io.InputStream is = getClass().getResourceAsStream("/1.wav");
            Player player = Manager.createPlayer(is, "audio/x-wav");
            player.realize();
            player.prefetch();
            player.start();
        } catch(Exception e) {
            System.out.println("播放Wave音樂發生異常：" + e.toString());
        }
    }
    //用于播放Mp3文件
    private void playMp3() {
        try {
            java.io.InputStream is = getClass().getResourceAsStream("/1.mp3");
            Player player = Manager.createPlayer(is, "audio/mpeg");
            player.realize();
            player.prefetch();
            player.start();
        } catch(Exception e) {
            System.out.println("播放Mp3音樂發生異常：" + e.toString());
        }
    }
    
    //用于播放iMelody文件
    private void playIMelody() {
        try {
            java.io.InputStream is = getClass().getResourceAsStream("/1.imy");
            Player player = Manager.createPlayer(is, "audio/imelody");
            player.realize();
            player.prefetch();
            player.start();
        } catch(Exception e) {
            System.out.println("播放iMelody音樂發生異常：" + e.toString());
        }
    }
    
    //用于播放AMR文件
    private void playAmr() {
        try {
            java.io.InputStream is = getClass().getResourceAsStream("/1.amr");
            Player player = Manager.createPlayer(is, "audio/amr");
            player.realize();
            player.prefetch();
            player.start();
        } catch(Exception e) {
            System.out.println("播放Amr音樂發生異常：" + e.toString());
        }
    }
}