SunFileReader.java 文件源码

@Override
public AudioInputStream getAudioInputStream(final InputStream stream)
        throws UnsupportedAudioFileException, IOException {
    stream.mark(200); // The biggest value which was historically used
    try {
        final StandardFileFormat format = getAudioFileFormatImpl(stream);
        // we've got everything, the stream is supported and it is at the
        // beginning of the audio data, so return an AudioInputStream
        return new AudioInputStream(stream, format.getFormat(),
                                    format.getLongFrameLength());
    } catch (UnsupportedAudioFileException | EOFException ignored) {
        // stream is unsupported or the header is less than was expected
        stream.reset();
        throw new UnsupportedAudioFileException();
    }
}