Re: JMF?

Knute Johnson <>
Wed, 15 Jul 2009 14:11:15 -0700
Dirk Bruere at NeoPax wrote:

Knute Johnson wrote:

Dirk Bruere at NeoPax wrote:

Dirk Bruere at NeoPax wrote:

I need a bit of s/w for playing various basic audio formats eg .wav
.mp3 (no GUI).

I assume I'll need JMF.
Are there any decent tutorials about?

Having said that, what I want is an audio player class without GUI
that will play common audio formats and have basic methods for stuff
like vol, start, stop etc

Is there one available? - I'm looking and have not found anything
suitable yet. I would have thought it should be easy, but it doesn't
seem to be.

Here is a simple outline class. Implementation of a level control is
a little more complicated. This will play .au, .aiff and some .wav,
depending on the actual data format.

import javax.sound.sampled.*;

public class Play {
    public static void main(String[] args) {
        class MyLineListener implements LineListener {
            public void update(LineEvent le) {
                LineEvent.Type type = le.getType();

        try {
            AudioInputStream fis =
             AudioSystem.getAudioInputStream(new File(args[0]));
            System.out.println("File AudioFormat: " + fis.getFormat());
            AudioInputStream ais = AudioSystem.getAudioInputStream(
            AudioFormat af = ais.getFormat();
            System.out.println("AudioFormat: " + af.toString());

            int frameRate = (int)af.getFrameRate();
            System.out.println("Frame Rate: " + frameRate);
            int frameSize = af.getFrameSize();
            System.out.println("Frame Size: " + frameSize);

            SourceDataLine line = AudioSystem.getSourceDataLine(af);
            line.addLineListener(new MyLineListener());

            int bufSize = line.getBufferSize();
            System.out.println("Buffer Size: " + bufSize);


            byte[] data = new byte[bufSize];
            int bytesRead;

            while ((bytesRead =,0,data.length)) != -1)

        } catch (Exception e) {

Any way of extending it to mp3, flac?

I don't know flac. Some MP3 files can be played with the JMF MP3 plugin
for JavaSound.


Knute Johnson
email s/nospam/knute2009/

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