BitRateControl

I tried the following, but I'm getting a bitrate of 0.

package net.turingcomplete.phosphor.shared;

import javax.media.*;

import javax.media.control.*;

import java.net.*;

public class MediaHelpers {

public static void main(String[] args) {

try {

URL url = new URL("file:///C:\\My Documents\\Sound\\mp3\\downloaded\\Allen Ginsberg - Howl.mp3");

Player player = Manager.createPlayer(url);

BitRateControl control = (BitRateControl) player.getControl("javax.media.control.BitRateControl");

Trace.display("rate: "+control.getBitRate());

} catch (Exception e) {

Trace.display(e, "Cannot find bitrate of file");

}

}

}///:~

Is bitRate for mp3's not supported or am I missing a step?

turingcomplete at 2007-6-29 12:23:00 >

/** @ return the approx. number of bits per second or -1 if cannot find the bitRate

*/

public static int getBitRate(File file) {

try {

Player player = Manager.createRealizedPlayer(new URL("file:///"+file.getAbsolutePath()));

double length = player.getDuration().getSeconds();

if (length > 0)

return (int) ((file.length() * 8) / length);

else

return 0;

} catch (Exception e) {

return -1;

}

}

The problem is that you have to create a realized player.. not very good for doing big batch of files.

turingcomplete at 2007-6-29 12:23:00 >