Listeners for when audio file finish

Question

I'm using the AVTransmit2 sample java code to send audio to a client. Is there a way to tell when that audio file is finished? I want to set up AVTransmit2 so it randomly plays another audio file once the first audio file is finished. I looked into listeners but I couldn't really figure out how to set them up to work with what I have. I think I need a listener to tell me when the audio file is over, but I can't figure out where it should go and what to make the listener listen to. I wrote some pseudocode to describe what I think I need.
**Pseudocode
if ( player.listener = event.stop){
x = rndnumgen();
player(x);
The main() method in AVTransmit2 has a line:
AVTransmit2 at = new AVTransmit2(new MediaLocator("file:/C:/test.wav"),
                         ip, port, fmt);
The problem is that I don't think AVTransmit2 has a player like the client does so I don't really know where to put the listener, if anybody has any suggestions I would be much obliged.
Many thanks,
Wade

Answer 1

You need to implement a ControllerListener, register it on your Processor, and listen for an "EndOfMedia" event.
It's important to note that once a Processor or Player have begun to process, you cannot change the DataSource they're using to play. You can't just tell the Processor "Ok, play this file now" without stopping it, and when you stop it, it'll kill the RTP session.
[http://java.sun.com/javase/technologies/desktop/media/jmf/2.1.1/solutions/Concat.html]
In order to do what you're wanting to do, you essentially need to use the Concat example to create a DataSource that will act like a jukebox... when one song ends, the DataSource will switch over to start outputting the new song. This way, the Processor itself doesn't have to change DataSources, so you can maintain the RTP session continuously.
It's also important to note that a specific Processor instance is probably only capable of processing the kind of data it's processing. If you're processing a MOV file, you probably couldn't use the same Processor instance to process an AVI file after that. So, it's important that all of the data that comes out of your jukebox DataSource is the same format, which you can do by embedding Processor's inside the DataSource. This is actually how the example has it implement, so I'm really just explaining why the example does it that way.