JMFPlayer.java

/*
 * JMFPlayer.java
 *
 * Version 1.0  Sep 18, 2008
 *
 * Copyright notice
 *
 * Brief description
 *
 * (c) 2008 by dbreuer
 */
package de.fhkoeln.santiago.components.jmf;

import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Dimension;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;

import javax.media.ControllerClosedEvent;
import javax.media.ControllerErrorEvent;
import javax.media.ControllerEvent;
import javax.media.ControllerListener;
import javax.media.EndOfMediaEvent;
import javax.media.Manager;
import javax.media.MediaLocator;
import javax.media.NoPlayerException;
import javax.media.Player;
import javax.media.RealizeCompleteEvent;
import javax.media.Time;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class JMFPlayer implements ControllerListener, MediaAction {

  // Media Player
  private Player player = null;
    
  // For GUI
  // component in which video is playing
  private Component visualComponent;
  // controls gain, position, start, stop
  private Component controlComponent;
  private JFrame frame;
  private JPanel panel;

  // For setup
  private final MediaLocator videoMRL;
  private boolean firstTime = true;
  private int controlPanelHeight = 0;
  private int videoWidth = 0;
  private int videoHeight = 0;
  
  
  public JMFPlayer(String pathToVideo) throws NoPlayerException, IOException {
    this.videoMRL = createMediaLocator(pathToVideo);
    setupPlayer();
  }
  
  public void startPlayer() {
    if (player != null)
      player.start();
  }
  
  public void stopPlayer() {
    if (player != null) {
      player.stop();
      player.deallocate();
    }
  }

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

  /*
   * (non-Javadoc)
   * 
   * @see javax.media.ControllerListener#controllerUpdate(javax.media.ControllerEvent)
   */
  
  public synchronized void controllerUpdate(ControllerEvent event) {
    if (player == null)
      return;

    if (event instanceof RealizeCompleteEvent) {
      int width = 640;
      int height = 0;
      if (visualComponent == null)
        if ((visualComponent = player.getVisualComponent()) != null) {
          Dimension videoSize = visualComponent.getPreferredSize();
          videoWidth = videoSize.width;
          videoHeight = videoSize.height;
          width = videoWidth;
          height += videoHeight;
          visualComponent.setBounds(0, 0, videoWidth, videoHeight);
        }

      if (controlComponent == null)
        if ((controlComponent = player
            .getControlPanelComponent()) != null) {
          
          controlPanelHeight = controlComponent.getPreferredSize().height;
          height += controlPanelHeight;
        }

      if (controlComponent != null) {
        controlComponent.setBounds(0, videoHeight, width, controlPanelHeight);
        controlComponent.invalidate();
      }
      System.out.println("Width: " + width);
      System.out.println("Heigth: " + height);
      setupGUI(width, height);

    } else if (event instanceof EndOfMediaEvent) {
      // We've reached the end of the media; rewind and
      // start over
      player.setMediaTime(new Time(0));
      player.start();
    } else if (event instanceof ControllerErrorEvent) {
      // Tell TypicalPlayerApplet.start() to call it a day
      player = null;
    } else if (event instanceof ControllerClosedEvent) {
      panel.removeAll();
    }

  }
  
  
  private MediaLocator createMediaLocator(String uri) throws FileNotFoundException {
    MediaLocator locator = null;
    
    if (uri.indexOf(":") > 0)
      locator = new MediaLocator(uri);
    
    if (uri.startsWith(File.separator))
      locator = new MediaLocator("file:" + uri);
    
    if (locator == null) {
      throw new FileNotFoundException("The output file could not be realized with URI " + uri);
    } else {
      return locator;
    }
  }

  private void setupGUI(int width, int height) {
    JFrame.setDefaultLookAndFeelDecorated(true);
    
    // Setup the frame
    frame = new JFrame("Demo Player");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    // Setup the panel
    panel = new JPanel(new BorderLayout());
    panel.add(visualComponent, BorderLayout.PAGE_START);
    panel.add(controlComponent, BorderLayout.PAGE_END);
    
    // Add all Components to the frame and pack it
    frame.getContentPane().add(panel);
    frame.pack();
    
    // make the frame visible
    frame.setVisible(true);
    // and set the size
    frame.setSize(width, height);
  }
  
  private void setupPlayer() throws NoPlayerException, IOException {
    player = Manager.createPlayer(videoMRL);
    player.addControllerListener(this);
  }

  /* (non-Javadoc)
   * @see de.fhkoeln.cosima.components.jmf.MediaAction#performAction()
   */
  public void performAction() {
    startPlayer();
  }
  
}