How to swap Effects on a video processor?

Question

I have written a JMF based program that plays a video and applies an effect (I have written) to it. The code works just fine, but now I want to add the ability to add or swap other effects. The problem is I can't figure out how to correctly do this, and can't find any examples to model. Here's some of the relevant code:
     MediaLocator locator = new MediaLocator(videoFile);
     try {
          processor = Manager.createProcessor(locator);
          } catch (NoProcessorException e) {
               System.out.println(e);
          } catch (IOException e) {
               System.out.println(e);
     processor.addControllerListener(this);
     processor.configure();
     public void controllerUpdate(ControllerEvent event) {
          processor = (Processor) event.getSourceController();
          if (event instanceof ConfigureCompleteEvent) {
               processor.setContentDescriptor(null);
               TrackControl[] controls = processor.getTrackControls();
               for (int i = 0; i < controls.length; i++) {
                    if (controls.getFormat() instanceof VideoFormat) {
                         videoTrack = controls[i];
                    else
                         controls[i].setFormat(new AudioFormat(AudioFormat.LINEAR));
                    try {
                         Codec codec[] = { new BorderEffect() };
                         videoTrack.setCodecChain(codec);
                    } catch (UnsupportedPlugInException e) {
                         System.err.println(e);
               processor.prefetch();
               processor.start();
          } else if (event instanceof RealizeCompleteEvent){
               SwingUtilities.invokeLater(new AddComponentsThread());
          } else if (event instanceof EndOfMediaEvent) {
               processor.setMediaTime(new Time(0));
               processor.start();
     If I change the line Codec codec[] = { new BorderEffect() };toCodec codec[] = { new ConvolveEffect() };it works fine with the new convolve. Alternately if I change it to:Codec codec[] = { new BorderEffect(), new ConvolveEffect() };the video gets both effects added. But so far I haven't been able to react to a user button click to change from one effect to the other.
First I tried to call processor.removeControllerListener() and processor.stop(), call a method to change the codec referenced just above and then call processor.addControllerListener(this) and processor.configure() all over again. This didn't work.
After a bit of reading I have think there are two other tactics:
*(1)* use a PluginManager and call addPlugin() or removePlugin() to enable / disable. I can't find any examples of using a PluginManager and some things aren't clear. Like - one you call addPlugin() do you still need the lines about new codec, setCodecChain() etc?
*(2)* chain processors together to add effects, remove a processor from the chain to remove effects. The DataOutput of a processor allows the output of one to be fed to the input of another.
I haven't been able to get any of these methods to work so far. Any ideas on what is the proper way to swap in/out effects?                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   

Answer 1

No ideas yet?
After trying some more things I have my program working ... well working in that I can apply different effects, but I think it is a pretty ugly solution. Here is a representative code snippet:
      if (ae.getActionCommand().equalsIgnoreCase("GREYSCALE")) {
               processor.stop();
               removeComponents();
               processor.removeControllerListener(this);     
               try {
                    processor = Manager.createProcessor(locator);
               } catch (NoProcessorException npe) {
                    System.out.println("No Processor Exception");
               } catch (IOException ioe) {
                    System.out.println("IO error creating player");
               setCodec("GREYSCALE");
               processor.addControllerListener(this);
               processor.configure();                               
          }I wrote a custom method removeComponents() which calls removeAll() on the JPanel containing the video and controls to essentially wipe them out. Then remove the ControllerListener and create a whole new processor. (THIS does not seem to be an elegant or correct way of doing things!) Another custom method setCodec() is used to specify which codec to use, a ControllerListener is added and the new processor is configured.
This DOES work, but I am quite sure it isn't the best or most elegant way of doing things. Any advice would be much appreciated.
Edited by: craighagerman on Oct 24, 2009 6:34 PM