JavaSoundAudioClip.java 文件源码

public JavaSoundAudioClip(InputStream in) throws IOException {
    if (DEBUG || Printer.debug)Printer.debug("JavaSoundAudioClip.<init>");

    BufferedInputStream bis = new BufferedInputStream(in, STREAM_BUFFER_SIZE);
    bis.mark(STREAM_BUFFER_SIZE);
    boolean success = false;
    try {
        AudioInputStream as = AudioSystem.getAudioInputStream(bis);
        // load the stream data into memory
        success = loadAudioData(as);

        if (success) {
            success = false;
            if (loadedAudioByteLength < CLIP_THRESHOLD) {
                success = createClip();
            }
            if (!success) {
                success = createSourceDataLine();
            }
        }
    } catch (UnsupportedAudioFileException e) {
        // not an audio file
        try {
            MidiFileFormat mff = MidiSystem.getMidiFileFormat(bis);
            success = createSequencer(bis);
        } catch (InvalidMidiDataException e1) {
            success = false;
        }
    }
    if (!success) {
        throw new IOException("Unable to create AudioClip from input stream");
    }
}