Playing exotic WAV files with Java

Question

I have a WAV file encoded with ADPCM (id=2), mono, 4 bits per sample and a "fact" chunk. Much stuff that does not appear in "normal" wavs.

The AudioFileReader class of AudioInputStream already fails when parsing the format code (here 2 == ADPCM), it only accepts 1,3,6 and 7.

Is there another way to play such files? Since standard Java obviously cannot do that.

This is the file: https://anonfile.com/c1ianfj5b5/music_wav

Answer 1

For Windows(32/64) and macOS(64) you can use FFSampledSP, v0.9.29 or later. You can get it either via this Maven dependency:

<dependency>
    <groupId>com.tagtraum</groupId>
    <artifactId>ffsampledsp-complete</artifactId>
    <version>0.9.29</version>
</dependency>

Or via this download link.

Once the .jar is in the classpath, the following code should work:

import javax.sound.sampled.*;
import java.io.File;
import java.io.IOException;

public class PlayADPCM {

    public static void main(final String[] args) throws IOException, UnsupportedAudioFileException, LineUnavailableException {
        final File file = new File("your_adpcm_file.wav");
        final AudioInputStream stream = AudioSystem.getAudioInputStream(file);
        final AudioFormat format = stream.getFormat();
        System.out.println("Source format: " + format);
        final AudioFormat targetFormat = new AudioFormat(AudioFormat.Encoding.PCM_SIGNED,
            format.getSampleRate(), 16, format.getChannels(),
            format.getChannels()*2,
            format.getSampleRate(), format.isBigEndian());
        System.out.println("Target format: " + targetFormat);
        // convert source to target format
        final AudioInputStream playableStream = AudioSystem.getAudioInputStream(targetFormat, stream);
        // get a line and play it.
        final DataLine.Info lineInfo = new DataLine.Info(SourceDataLine.class, targetFormat);
        final SourceDataLine line = (SourceDataLine)AudioSystem.getLine(lineInfo);
        line.open(targetFormat);
        line.start();
        final byte[] buf = new byte[1024*8];
        int justRead;
        while ((justRead = playableStream.read(buf))>0) {
            line.write(buf, 0, justRead);
        }
        playableStream.close();
        line.drain();
        line.close();
    }
}