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Play-pause-resume & stop MP3 audio.java
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Play-pause-resume & stop MP3 audio.java
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//main class
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.JButton;
import javax.swing.JFrame;
import javazoom.jl.decoder.JavaLayerException;
public class Main extends JFrame implements ActionListener{
FileInputStream fileInputStream;
JButton play=new JButton("Play");
JButton pause=new JButton("pause");
JButton resume=new JButton("resume");
JButton stop=new JButton("stop");
Main(){
JFrame frame=new JFrame();
play.setBounds(0,50,70, 50);
pause.setBounds(70,50,70, 50);
resume.setBounds(140,50,70, 50);
stop.setBounds(210,50,70, 50);
frame.add(play);
frame.add(pause);
frame.add(resume);
frame.add(stop);
frame.setSize(300,200);
frame.setLayout(null);
frame.setVisible(true);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
play.addActionListener(this);
pause.addActionListener(this);
resume.addActionListener(this);
stop.addActionListener(this);
}
public static void main(String[] args) {
new JButtonExample();
}
public void actionPerformed(ActionEvent e) {
try {
fileInputStream = new FileInputStream("C:\\Users\\Nakos\\Desktop\\They3.mp3");
PausablePlayer player = new PausablePlayer(fileInputStream);
Object source = e.getSource();
if(source==play)
{System.out.println("play button");
player.play();}
if(source==pause)
{System.out.println("pause button");
player.pause(); }
if(source==resume)
{System.out.println("resume button");
player.resume();}
if(source==stop)
{System.out.println("stop button");
player.stop();}
} catch (FileNotFoundException | JavaLayerException ex) {
Logger.getLogger(JButtonExample.class.getName()).log(Level.SEVERE, null, ex);
} finally {
try {
fileInputStream.close();
} catch (IOException ex) {
Logger.getLogger(JButtonExample.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
}
//Player Class
import java.io.FileInputStream;
import java.io.InputStream;
import javazoom.jl.decoder.JavaLayerException;
import javazoom.jl.player.AudioDevice;
import javazoom.jl.player.Player;
public class PausablePlayer {
private final static int NOTSTARTED = 0;
private final static int PLAYING = 1;
private final static int PAUSED = 2;
private final static int FINISHED = 3;
// the player actually doing all the work
private final Player player;
// locking object used to communicate with player thread
private final Object playerLock = new Object();
// status variable what player thread is doing/supposed to do
private int playerStatus = NOTSTARTED;
public PausablePlayer(final InputStream inputStream) throws JavaLayerException {
this.player = new Player(inputStream);
}
public PausablePlayer(final InputStream inputStream, final AudioDevice audioDevice) throws JavaLayerException {
this.player = new Player(inputStream, audioDevice);
}
/**
* Starts playback (resumes if paused)
*/
public void play() throws JavaLayerException {
synchronized (playerLock) {
switch (playerStatus) {
case NOTSTARTED:
final Runnable r = new Runnable() {
public void run() {
playInternal();
}
};
final Thread t = new Thread(r);
t.setDaemon(true);
t.setPriority(Thread.MAX_PRIORITY);
playerStatus = PLAYING;
t.start();
break;
case PAUSED:
resume();
break;
default:
break;
}
}
}
/**
* Pauses playback. Returns true if new state is PAUSED.
*/
public boolean pause() {
synchronized (playerLock) {
if (playerStatus == PLAYING) {
playerStatus = PAUSED;
}
return playerStatus == PAUSED;
}
}
/**
* Resumes playback. Returns true if the new state is PLAYING.
*/
public boolean resume() {
synchronized (playerLock) {
if (playerStatus == PAUSED) {
playerStatus = PLAYING;
playerLock.notifyAll();
}
return playerStatus == PLAYING;
}
}
/**
* Stops playback. If not playing, does nothing
*/
public void stop() {
synchronized (playerLock) {
playerStatus = FINISHED;
playerLock.notifyAll();
}
}
private void playInternal() {
while (playerStatus != FINISHED) {
try {
if (!player.play(1)) {
break;
}
} catch (final JavaLayerException e) {
break;
}
// check if paused or terminated
synchronized (playerLock) {
while (playerStatus == PAUSED) {
try {
playerLock.wait();
} catch (final InterruptedException e) {
// terminate player
break;
}
}
}
}
close();
}
/**
* Closes the player, regardless of current state.
*/
public void close() {
synchronized (playerLock) {
playerStatus = FINISHED;
}
try {
player.close();
} catch (final Exception e) {
// ignore, we are terminating anyway
}
}
// demo how to use
public static void main(String[] argv) {
try {
FileInputStream input = new FileInputStream("C:\\Users\\Nakos\\Desktop\\They3.mp3");
PausablePlayer player = new PausablePlayer(input);
// start playing
player.play();
// after 5 secs, pause
player.pause();
// after 5 secs, resume
Thread.sleep(500);
player.resume();
} catch (final Exception e) {
throw new RuntimeException(e);
}}}
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