playercomponent.java

ZDrive Driving Warning System

/*
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 * and open the template in the editor.
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package zdrive.engines;

/**
 *
 * @author Mikhail
 */
/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */



import java.io.IOException;
import java.util.ArrayDeque;
import java.util.Deque;
import java.util.HashMap;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.media.ControllerErrorEvent;
import javax.media.ControllerEvent;
import javax.media.ControllerListener;
import javax.media.EndOfMediaEvent;
import javax.media.NoPlayerException;
import javax.media.Player;
import javax.media.Manager;
import javax.media.MediaLocator;
import java.net.URL;
import java.io.*;

/**
 *
 * @author user
 */
public class PlayerComponent implements ControllerListener {
    private Player current;
    private Deque<String> queue = new ArrayDeque<String>();
    private HashMap<String, MediaLocator> sounds = new HashMap<String, MediaLocator>();

    public synchronized void append (String path)
    {
        queue.add(path);
        
    }



    public synchronized void resume ()
    {
        if (current == null) playFile(queue.pollFirst());
    }

    public synchronized void stop ()
    {
        queue.clear();
        current.stop();
        current = null;
    }

    private synchronized void fetchNext ()
    {
        if (!queue.isEmpty())
            playFile(queue.pollFirst());
        else
            current = null;
    }

    public synchronized boolean isDone(){

        return current==null;
    }

    private void addPath(String path) {
        String fullPath = null;
        try {
            fullPath = new File(path).getCanonicalPath();
        } catch (IOException ex) {
            //Logger.getLogger(TestSound.class.getName()).log(Level.SEVERE, null, ex);
        }
        MediaLocator locator = null;
        locator = new MediaLocator("file:///" + fullPath);
        sounds.put(path, locator);
    }

    private synchronized void playFile (String path)
    {
        if (current != null)
            current.stop();

        if (!sounds.containsKey(path))
            addPath(path);
        try {
            current = Manager.createPlayer(sounds.get(path));
        } catch (IOException ex) {
            //Logger.getLogger(Voice.class.getName()).log(Level.SEVERE, null, ex);
        } catch (NoPlayerException ex) {
           // Logger.getLogger(Voice.class.getName()).log(Level.SEVERE, null, ex);
        }
        current.addControllerListener(this);
        current.start();
    }


    public synchronized void controllerUpdate(ControllerEvent event) {
        if (current == null)
            return;
        if (event.getSource() != current)
            return;
        if (event instanceof EndOfMediaEvent) {
            fetchNext();
        } else if (event instanceof ControllerErrorEvent) {
           // System.out.println("Error while playing media");
            stop();
        }
    }
}