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  Playing an MP3 clip from a byte [].  (Read 1946 times)
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Offline Sharkins

Junior Newbie




Java games rock!


« Posted 2004-08-20 12:26:28 »

Hi

I’m writing a little application that takes an encrypted MP3 file, decrypts it and plays it.

I read the file in to a byte [], decrypt it successfully. I am however having trouble playing it from a byte array.

To play from a file seems to be quite straight forward, simply use javax.media.Player, no real problem. I can’t seem to find a simple way to play it from and byte [].

Any help would be much appreciated.

Cheers
Offline Backmask

Junior Member




586: The average IQ needed to understand a PC


« Reply #1 - Posted 2004-08-23 07:20:29 »

The Java SDK has no way of playing a MP3 file. It handles wav and a bounch of other formats but not MP3.

See http://www.javazoom.net/javalayer/javalayer.html for a open source mp3 layer.

Offline oNyx

JGO Coder


Medals: 1


pixels! :x


« Reply #2 - Posted 2004-08-23 07:51:21 »

See http://www.mp3licensing.com/royalty/software.html for royality rates (if you want something free as in beer use ogg - it's better anyways).

弾幕 ☆ @mahonnaiseblog
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Offline Sharkins

Junior Newbie




Java games rock!


« Reply #3 - Posted 2004-08-23 07:52:21 »

Thanks for the feedback.

I did manage to get MP3 playback working from a file, the following method takes a file name and kicks off playback.

The problem I have is trying to get this to work from a byte array.

Cheers,
     Sharkins

import javax.media.*;

public void load(String url, boolean autoplay) throws Exception {

       if (player != null) {
           player.stop();
       }

       url = "file:" + url;

       mediaURL = new URL(url);

       player = Manager.createPlayer(mediaURL);

       // Add ourselves as a listener for a player's events
       player.addControllerListener(this);

       player.realize();
       player.prefetch();

       if (autoplay)
           player.start();
   }

Offline Backmask

Junior Member




586: The average IQ needed to understand a PC


« Reply #4 - Posted 2004-08-23 08:18:55 »

ahh you are using Java Media Framework. Well that has support for Mp3 but as you said there seams to be some problem with playing from a byte[] array. That is there is no simple metod anyway. But I think you can create extention of the DataSources that JMF is using and calling the method Manager.createPlayer( yourDatasource) instead. But as I never used JMF I can't give you any more advice than to try google.

Offline aNt

Senior Member




AFK


« Reply #5 - Posted 2004-08-23 09:16:29 »

try lwjgl fmod Wink
Offline Sharkins

Junior Newbie




Java games rock!


« Reply #6 - Posted 2004-08-24 07:04:05 »

Thanks for the input people.

I'll continue to play around with it and hopefully come up with something.

Cheers
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