net.sf.fmj.media.multiplexer.audio.WAVMux Maven / Gradle / Ivy

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Freedom for Media in Java
There is a newer version: 1.0.2-jitsi
package net.sf.fmj.media.multiplexer.audio;

import java.io.*;
import java.util.logging.*;

import javax.media.*;
import javax.media.format.AudioFormat;
import javax.media.protocol.*;
import javax.sound.sampled.*;

import net.sf.fmj.media.codec.*;
import net.sf.fmj.utility.*;

/**
 * WAV audio multiplexer.
 *
 * @author Ken Larson
 *
 */
public class WAVMux extends JavaSoundMux
{
    private static final Logger logger = LoggerSingleton.logger;

    private static final boolean USE_JAVASOUND = true;

    public WAVMux()
    {
        super(new FileTypeDescriptor(FileTypeDescriptor.WAVE),
                AudioFileFormat.Type.WAVE);
    }

    @Override
    public Format setInputFormat(Format format, int trackID)
    {
        final AudioFormat af = (AudioFormat) format;
        if (af.getSampleSizeInBits() == 8
                && af.getSigned() == AudioFormat.SIGNED)
            return null; // 8-bit is always unsigned for Wav.

        if (af.getSampleSizeInBits() == 16
                && af.getSigned() == AudioFormat.UNSIGNED)
            return null; // 16-bit is always signed for Wav.

        return super.setInputFormat(format, trackID);
    }

    @Override
    protected void write(InputStream in, OutputStream out,
            javax.sound.sampled.AudioFormat javaSoundFormat) throws IOException
    {
        if (USE_JAVASOUND)
        {
            super.write(in, out, javaSoundFormat);

        } else
        { // alternative to JavaSound - not necessary.
            try
            {
                byte[] header = JavaSoundCodec.createWavHeader(javaSoundFormat); // TODO:
                                                                                 // no
                                                                                 // length
                if (header == null)
                    throw new IOException("Unable to create wav header");

                // System.out.println("WAVMux Header: " + header.length);
                out.write(header);

                IOUtils.copyStream(in, out);

                // TODO: go back and write header.
            } catch (InterruptedIOException e)
            {
                logger.log(Level.FINE, "" + e, e);
                throw e;
            } catch (IOException e)
            {
                logger.log(Level.WARNING, "" + e, e);
                throw e;
            }
        }
    }

}