Re: Java Autio

From:
Phi <phi@gressly.ch>
Newsgroups:
comp.lang.java.programmer
Date:
Sun, 18 Mar 2007 07:25:17 +0100
Message-ID:
<1a9c6$45fcdb48$544a5003$19031@news.hispeed.ch>
Finally solved my problem

I uploaded my audio product under the following web site:
http://www.freimann.eu/eliphi/phi/setzkasten/
The audio - version lies under:
http://www.freimann.eu/eliphi/phi/setzkasten/Setzkasten_sound.jar

Thanks again for all your help

PS The code I finally used is the following:

import java.io.*;
import javax.sound.sampled.*;
import eu.gressly.io.ResourceAnchor;

public class Play {

    public static void playSampleFile(String name, float pan, float
gain) throws Exception{
        InputStream wavInputStream = getWavInputStream(name);
        if(null != wavInputStream) {
            playSampleFile(wavInputStream, pan, gain);
        }
    }

    public static void playSampleFile(String name) throws Exception {
        playSampleFile(name, 0.0f, 0.0f);
    }
/**
 * Openes a resource as stream. Adds the directory "/wav/" and the
suffix ".wav" to the given wavName
 * TODO: cache input Strams in memory (Hashtable using names as keys and
inputStreams as values.
 * if the value is there: reset the stream.
 * @param wavName Filename (as resource) without "wav/" and without ".wav"
 * @return null or a correctly opened inputStream.
 */

    private static InputStream getWavInputStream(String wavName) {
        ClassLoader cl = ResourceAnchor.class.getClassLoader();
        String resourceName = "wav/" + wavName.toLowerCase() + ".wav";

        return cl.getResourceAsStream(resourceName);
    }

    private static void playSampleFile(InputStream wavInputStream, float
pan, float gain)
            throws Exception {
        AudioInputStream ais =
AudioSystem.getAudioInputStream(wavInputStream);

        AudioFormat format = ais.getFormat();
        // ALAW/ULAW samples in PCM konvertieren
        if ((format.getEncoding() == AudioFormat.Encoding.ULAW)
                || (format.getEncoding() == AudioFormat.Encoding.ALAW)) {
            AudioFormat tmp = new
AudioFormat(AudioFormat.Encoding.PCM_SIGNED,
                    format.getSampleRate(), format.getSampleSizeInBits()
* 2,
                    format.getChannels(), format.getFrameSize() * 2, format
                            .getFrameRate(), true);
            ais = AudioSystem.getAudioInputStream(tmp, ais);
            format = tmp;
        }
        // Clip erzeugen und fffffffnen
        DataLine.Info info = new DataLine.Info(Clip.class, format,
((int) ais
                .getFrameLength() * format.getFrameSize()));
        Clip clip = (Clip) AudioSystem.getLine(info);
        clip.open(ais);
        // PAN einstellen
        FloatControl panControl = (FloatControl) clip
                .getControl(FloatControl.Type.PAN);
        panControl.setValue(pan);
        // MASTER_GAIN einstellen
        FloatControl gainControl = (FloatControl) clip
                .getControl(FloatControl.Type.MASTER_GAIN);
        gainControl.setValue(gain);
        // Clip abspielen
        clip.start();
        while (true) {
            try {
                Thread.sleep(300);
            } catch (Exception e) {
                // nothing
            }
            if (!clip.isRunning()) {
                try {
                    Thread.sleep(200);
                } catch (InterruptedException iux) {
                }
                break;
            }
        }
        clip.stop();
        clip.close();
    }

    public static void main(String[] args) {
        try {
            playSampleFile(args[0], Float.parseFloat(args[1]), Float
                    .parseFloat(args[2]));
        } catch (Exception e) {
            e.printStackTrace();
            System.exit(1);
        }
        System.exit(0);
    }
}

phi wrote:

Hi all

Is this the right place for Java-Audio Questions?

If so: How do I make java to play an Audio File (eg. WAV).
My Application uses Swing and a Key-Event should play a sound.

Either of the following answers should do:
a) Minimal code Example
b) Link to minimal examples (I have found something on
http://www.jsresources.org/examples/SimpleAudioPlayer.java.html but it
seams rather big for just playing a wave file).

Greetings and thanks in advance

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