AiffFileReader.java 文件源码

/**
 * Obtains the audio file format of the URL provided.  The URL must
 * point to valid audio file data.
 * @param url the URL from which file format information should be
 * extracted
 * @return an <code>AudioFileFormat</code> object describing the audio file format
 * @throws UnsupportedAudioFileException if the URL does not point to valid audio
 * file data recognized by the system
 * @throws IOException if an I/O exception occurs
 */
public AudioFileFormat getAudioFileFormat(URL url) throws UnsupportedAudioFileException, IOException {
    AudioFileFormat fileFormat = null;
    InputStream urlStream = url.openStream();       // throws IOException
    try {
        fileFormat = getCOMM(urlStream, false);
    } finally {
        urlStream.close();
    }
    return fileFormat;
}