AdvancedMP3.java

/*

    Based on code from the Princeton Computer Science Program.
    Requires JavaZoom library

*/

import java.io.BufferedInputStream;
import java.io.FileInputStream;

import javazoom.jl.player.advanced.AdvancedPlayer;

public class AdvancedMP3{
    private String filename;
    private AdvancedPlayer player; 

    // constructor that takes the name of an MP3 file
    public AdvancedMP3(String filename) {
        this.filename = filename;
    }

    public void close() { if (player != null) player.close(); }

    // play the MP3 file to the sound card
    public void play() {
        try {
            FileInputStream fis     = new FileInputStream(filename);
            BufferedInputStream bis = new BufferedInputStream(fis);
            player = new AdvancedPlayer(bis);
        }
        catch (Exception e) {
            System.out.println("Problem playing file " + filename);
            System.out.println(e);
        }

        // run in new thread to play in background
        new Thread() {
            public void run() {
                try { player.play(); }
                catch (Exception e) { System.out.println(e); }
            }
        }.start();

    }

    public void play(int total) {
        final int frames = total;
        try {
            FileInputStream fis     = new FileInputStream(filename);
            BufferedInputStream bis = new BufferedInputStream(fis);
            player = new AdvancedPlayer(bis);
        }
        catch (Exception e) {
            System.out.println("Problem playing file " + filename);
            System.out.println(e);
        }

        // run in new thread to play in background
        new Thread() {
            public void run() {
                try { player.play(frames); }
                catch (Exception e) { System.out.println(e); }
            }
        }.start();

        




    }

    public void forceClose(){
        player.close();
    }


    // test client
    public static void main(String[] args) {
        String filename = args[0];
        AdvancedMP3 mp3 = new AdvancedMP3(filename);
        mp3.play(100);

        // do whatever computation you like, while music plays
        int N = 4000;
        double sum = 0.0;
        for (int i = 0; i < N; i++) {
            for (int j = 0; j < N; j++) {
                sum += Math.sin(i + j);
            }
        }
        System.out.println(sum);

        // when the computation is done, stop playing it
        //mp3.close();

        // play from the beginning
        //mp3 = new MP3(filename);
        //mp3.play();

    }

}