Rewind and Fast Forward button audio

[jack]

Hi, I'm trying to modify code from sun, I'm trying to add a Fast Forward and a Rewind can anyone help
Code

import java.applet.AudioClip;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.net.URL;
import java.net.MalformedURLException;
import java.awt.GridBagLayout;
 
public class SoundApplication extends JPanel
                              implements ActionListener,
                                         ItemListener {
    SoundList soundList;
    String auFile = "spacemusic.au";
    String aiffFile = "flute+hrn+mrmba.aif";
    String midiFile = "trippygaia1.mid";
    String rmfFile = "jungle.rmf";
    String wavFile = "bottle-open.wav";
    String chosenFile;
        
    AudioClip onceClip, loopClip;
    URL codeBase;
 
    JComboBox formats;
    JButton playButton, loopButton, pauseButton, fastforwardButton, rewindButton, muteButton, stopButton;
    JLabel status;
        
    boolean looping = false;
 
    public SoundApplication() {
        String [] fileTypes = {auFile,
                               aiffFile,
                               midiFile,        
                               rmfFile,
                               wavFile};
        formats = new JComboBox(fileTypes);
        formats.setSelectedIndex(0);
        chosenFile = (String)formats.getSelectedItem();
        formats.addItemListener(this);
 
        playButton = new JButton("Play");
        playButton.addActionListener(this);
 
        loopButton = new JButton("Loop");
        loopButton.addActionListener(this);

pauseButton = new JButton("Pause");
        pauseButton.addActionListener(this);

fastforwardButton = new JButton("Fast-Forward");
        fastforwardButton.addActionListener(this);

rewindButton = new JButton("Rewind");
        rewindButton.addActionListener(this);

muteButton = new JButton("Mute");
        muteButton.addActionListener(this);
 
        stopButton = new JButton("Stop");
        stopButton.addActionListener(this);
        stopButton.setEnabled(false);
        
        status = new JLabel(
                    "Click Play or Loop to play the selected sound file.");
                
        JPanel controlPanel = new JPanel();
        controlPanel.add(formats);
        controlPanel.add(playButton);
        controlPanel.add(loopButton);
controlPanel.add(pauseButton);
controlPanel.add(fastforwardButton);
controlPanel.add(rewindButton);
controlPanel.add(muteButton);
        controlPanel.add(stopButton);           
                
        JPanel statusPanel = new JPanel();
        statusPanel.add(status);
                
        add(controlPanel);
        add(statusPanel);
 
        startLoadingSounds();
    }
 
    public void itemStateChanged(ItemEvent e){
        chosenFile = (String)formats.getSelectedItem();
        soundList.startLoading(chosenFile);
    }
 
    void startLoadingSounds() {
        //Start asynchronous sound loading.
        try {
            codeBase = new URL("file:" + System.getProperty("user.dir") + "/");
        } catch (MalformedURLException e) {
            System.err.println(e.getMessage());
        }
        soundList = new SoundList(codeBase);
        soundList.startLoading(auFile);
        soundList.startLoading(aiffFile);
        soundList.startLoading(midiFile);
        soundList.startLoading(rmfFile);
        soundList.startLoading(wavFile);
    }
 
    public void stop() {
        onceClip.stop();        //Cut short the one-time sound.
        if (looping) {
            loopClip.stop();    //Stop the sound loop.
        }
    }    
 
    public void start() {
        if (looping) {
            loopClip.loop();    //Restart the sound loop.
        }
    }    
 
    public void actionPerformed(ActionEvent event) {
        //PLAY BUTTON
        Object source = event.getSource();
        if (source == playButton) {
            //Try to get the AudioClip.
            onceClip = soundList.getClip(chosenFile);
            stopButton.setEnabled(true);
            onceClip.play();     //Play it once.
            status.setText("Playing sound " + chosenFile + ".");
            if (onceClip == null) {
                status.setText("Sound " + chosenFile + " not loaded yet.");
            }
            return;
        }
 
        //START LOOP BUTTON
        if (source == loopButton) {
            loopClip = soundList.getClip(chosenFile);
 
            looping = true;
            loopClip.loop();     //Start the sound loop.
            loopButton.setEnabled(false); //Disable start button.
            stopButton.setEnabled(true);
            status.setText("Playing sound " + chosenFile + " continuously.");
            if (loopClip == null) {
                status.setText("Sound " + chosenFile + " not loaded yet.");
            }
            return;
        }
 
        //STOP LOOP BUTTON
        if (source == stopButton) {
            if (looping) {
                looping = false;
                loopClip.stop();    //Stop the sound loop.
                loopButton.setEnabled(true); //Enable start button.
            } else if (onceClip != null) {
                onceClip.stop();
            }
            stopButton.setEnabled(false);
            status.setText("Stopped playing " + chosenFile + ".");
            return;
        }
    }
 
    public static void main(String s[]) {
        WindowListener l = new WindowAdapter() {
            public void windowClosing(WindowEvent e) {System.exit(0);}
        };
        JFrame f = new JFrame("SoundApplication");
        f.addWindowListener(l);
        f.getContentPane().add(new SoundApplication());
        f.setSize(new Dimension(400,100));
        f.show();
    }
}

[ UD: added code tags ]
[ January 24, 2006: Message edited by: Ulf Dittmer ]

[Ulf Dittmer]

Hello "zip zipeee"-

Welcome to JavaRanch.

On your way in you may have missed that we have a policy on screen names here at JavaRanch. Since yours does not conform with it, please take a moment to chnage it, which you can do right here.

Enjoy your time here.

[Ulf Dittmer]

As regards your question, what is the problem you're facing in adding the two buttons? You have added them to the GUI, now you need to handle them in the actionPerformed method.

BTW, I've added CODE tags to your post. They maintain the formatting, making it much easier to read code. You'll find the "CODE" button underneath the input field when you post a message.

[jack]

Thanks for the information, I'm just not sure how to add the fast-forward and rewind functionality. Thanks Jack

[Ulf Dittmer]

Hi Jack-

Thanks for changing your screen name. Unfortunately, it's still not what is required, which is a real(-sounding) first and last name. Please change it accordingly.

As to the applet, java.applet.AudioClip is based on com.sun.media.sound.JavaSoundAudioClip on recent JVMs. That does not support forward/backward out of the box (or even restarting at the point where it got stopped) either. There are hints (in the startImpl method) that it is principally possible to navigate to an arbitrary position in the playback, but unless you feel like mucking around with JDK-internal classes, I think you're out of luck.
[ January 25, 2006: Message edited by: Ulf Dittmer ]