processorvideopanel.java

Its video trNSMITT FILE USING JMF

/*
 * @(#)ProcessorVideoPanel.java	1.2 01/03/13
 *
 * Copyright (c) 1999-2001 Sun Microsystems, Inc. All Rights Reserved.
 *
 * Sun grants you ("Licensee") a non-exclusive, royalty free, license to use,
 * modify and redistribute this software in source and binary code form,
 * provided that i) this copyright notice and license appear on all copies of
 * the software; and ii) Licensee does not utilize the software in a manner
 * which is disparaging to Sun.
 *
 * This software is provided "AS IS," without a warranty of any kind. ALL
 * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY
 * IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
 * NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE
 * LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
 * OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS
 * LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT,
 * INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
 * CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF
 * OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGES.
 *
 * This software is not designed or intended for use in on-line control of
 * aircraft, air traffic, aircraft navigation or aircraft communications; or in
 * the design, construction, operation or maintenance of any nuclear
 * facility. Licensee represents and warrants that it will not use or
 * redistribute the Software for such purposes.
 *
 * Modified by Frank McCown for use in the ROWC distributed media system on
 * May 2002.
 */

import java.awt.*;
import javax.media.*;
import javax.media.control.TrackControl;
import javax.media.format.*;
import javax.media.protocol.*;
import javax.media.protocol.DataSource;


public class ProcessorVideoPanel extends javax.swing.JPanel implements ControllerListener 
{
  private Player p;
  private Object waitSync = new Object();
  private boolean stateTransitionOK = true;
	private Component control;
	private Component visual;


  /**
   * Given a DataSource, create a player and use it to playback the media.
   * Return true if successful playing the DataSource, false otherwise.
   */
  public boolean open(DataSource ds) 
  {
		System.err.println("create player for: " + ds.getContentType());
	
		try 
		{
		  p = Manager.createPlayer(ds);
		} 
		catch (Exception e) 
		{
			System.err.println("Failed to create a player from the given DataSource: " + e);
			return false;
		}
	
		p.addControllerListener(this);
	
		// Realize the player.
		p.prefetch();
		if (!waitForState(p.Prefetched)) 
		{
		  System.err.println("Failed to realize the player.");
		  return false;
		}
	
		// Display the visual & control component if there's one.
	
		setLayout(new BorderLayout());
	
		if ((visual = p.getVisualComponent()) != null) 
		  add("Center", visual);
			
		if ((control = p.getControlPanelComponent()) != null) 
		  add("South", control);
			
		// Start the player.
		p.start();
	
		setVisible(true);
		
		setSize(getPreferredSize());

		return true;
  }

  public void addNotify() 
  {
		super.addNotify();
//	pack();
  }

  /**
   * Block until the player has transitioned to the given state.
   * Return false if the transition failed.
   */
  boolean waitForState(int state) 
  {
		synchronized (waitSync) {
	    try 
	    {
				while (p.getState() < state && stateTransitionOK)
		    	waitSync.wait();
	    } 
	    catch (Exception e) {}
		}
		return stateTransitionOK;
  }


  /**
   * Controller Listener.
   */
  public void controllerUpdate(ControllerEvent evt) 
  {
		if (evt instanceof ConfigureCompleteEvent ||
		  evt instanceof RealizeCompleteEvent ||
		  evt instanceof PrefetchCompleteEvent) 
		  {
		  synchronized (waitSync) 
		  {
				stateTransitionOK = true;
				waitSync.notifyAll();
		  }
		} 
		else if (evt instanceof ResourceUnavailableEvent) 
		{
		  synchronized (waitSync) 
		  {
				stateTransitionOK = false;
				waitSync.notifyAll();
		  }
		} 
		else if (evt instanceof EndOfMediaEvent)
		{
		//	System.out.println("\nEndOfMediaEvent\n");
		 // p.close();
		 
		  // Only a video file would produce an EndOfMediaEvent, so re-start
		  p.setMediaTime(new Time(0));
		  p.start();
		}
		else if (evt instanceof SizeChangeEvent) 
		{
		}
  }

	public void stop()
	{
		p.stop();
		p.close();
	}

	public Dimension getPreferredSize() 
	{
	  int w = 0, h = 0;
	  if (visual != null) 
	  {
			Dimension size = visual.getPreferredSize();
			w = size.width;
			h = size.height;
	  }
	  if (control != null) 
	  {
			Dimension size = control.getPreferredSize();
			if (w == 0)
		    w = size.width;
			h += size.height;
	  }
	  if (w < 160)
			w = 160;
	  return new Dimension(w, h);
	}
}