Archived:MMAPI player crashes in eSWT MIDlet (Known Issue)

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Archived: This article is archived because it is not considered relevant for third-party developers creating commercial solutions today. If you think this article is still relevant, let us know by adding the template {{ReviewForRemovalFromArchive|user=~~~~|write your reason here}}.

ESWT only supported in Symbian Java and not largely used on that platform either.

Article Metadata

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Tested with

Devices(s): Nokia N96, Nokia 5800 XpressMusic

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Compatibility

Platform(s): S60 3rd Edition, FP2, S60 5th Edition

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Article

Keywords: javax.microedition.media, org.eclipse.swt

Created: User:Technical writer 1 (12 May 2009)

Last edited: hamishwillee (14 Jun 2013)

Description

An MMAPI player crashes when playing is started from an eSWT MIDlet on Symbian.

How to reproduce

1. Implement a test MIDlet using the following source code:

 
 import java.io.IOException;
 import java.io.InputStream;
 import javax.microedition.media.Manager;
 import javax.microedition.media.MediaException;
 import javax.microedition.media.Player;
 import javax.microedition.media.control.VideoControl;
 import javax.microedition.midlet.MIDlet;
 import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.widgets.Control;
 import org.eclipse.swt.widgets.Display;
 import org.eclipse.swt.widgets.Shell;
 
 public class MMAPIExample extends MIDlet implements Runnable {
 
 
 	Display display;
        VideoControl vc;
        Thread UIThread;
 	Shell shell;
 
 
 	public void startApp() {
 
 		// Creating an eSWT UI thread.
 		if(UIThread == null) {
 			UIThread = new Thread(this);
 			UIThread.start();
 		}
 	}
 
 	public void pauseApp() {
 
 	}
 
 	public void destroyApp(boolean unconditional) {
 		// Dispose the remaining resources.
 		display.dispose();
 	}
 
 // The eSWT UI Thread
 	public void run() {
 		// Create the Display.
 		display = new Display();
 
 		shell = new Shell(display);
 		shell.open();
 
 		Player player= null ;
 		try {
 
                  InputStream is = getClass().getResourceAsStream("video.format");
                    player = Manager.createPlayer(is, null);
                    player.prefetch();
 
                    vc = (VideoControl)player.getControl("VideoControl");
                    Control vControl = (org.eclipse.swt.widgets.Control)
                      vc.initDisplayMode(VideoControl.USE_GUI_PRIMITIVE, "org.eclipse.swt.widgets.Control");            
                    vControl.setParent(shell);        
                     vc.setDisplayFullScreen(true);                        
 			player.start();
 
 		} catch (IOException e) {
 
 		} catch (MediaException e) {
 
 		}
 
 
 		// Execute the eSWT event loop.
 		while(!shell.isDisposed()) {
 			if(!display.readAndDispatch()) {
 				display.sleep();
 			}
 		}
 		if (player != null ){
 			player.deallocate();
 			player.close();
 			player = null;
 		}
 
 		// Clean up and destroy the MIDlet
 		destroyApp(true);
 		notifyDestroyed();
  	}
 
 	public void widgetDefaultSelected(SelectionEvent e) {
 	}
 }

2. Launch the test MIDlet. For the affected devices, no video will be played but {{{1}}} will be given instead.

Solution

This issue is expected to be fixed in future software versions for the affected devices, starting from S60 5th Edition.