java - JLayer 总是抛出 ArrayIndexOutOfBounds 异常

Question

我正在使用 JLayer 解码 MP3，并将其存储为 PCM 数据。但是，无论我使用什么 MP3 文件，我总是会收到索引为 443 的 ArrayIndexOutOfBoudnsException。我听说这只发生在某些 MP3 上，但它发生在我播放的每个 MP3 的每一帧上 这是我的代码:

private short[] getPCM(Header frameHeader, Bitstream bs) {
    short[] pcm = null;
    try {
        Decoder d = new Decoder();
        SampleBuffer buffer = (SampleBuffer) d.decodeFrame(frameHeader, bs);
        pcm = buffer.getBuffer();
    } catch (ArrayIndexOutOfBoundsException | DecoderException e) {
        System.err.println("JLayer, stap it");
    }
    return pcm;
}

并且使用以下代码调用该方法:

while ((frameHeader = bs.readFrame()) != null) {
    short[] pcm = getPCM(frameHeader, bs);

    for(short i : pcm){
        try {
            os.write(i);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }       
}

堆栈跟踪:

java.lang.ArrayIndexOutOfBoundsException: 433
at javazoom.jl.decoder.Bitstream.get_bits(Unknown Source)
at javazoom.jl.decoder.LayerIIIDecoder.decode(Unknown Source)
at javazoom.jl.decoder.LayerIIIDecoder.decodeFrame(Unknown Source)
at javazoom.jl.decoder.Decoder.decodeFrame(Unknown Source)
at com.dentonposs.Canvas.getPCM(Canvas.java:70)
at com.dentonposs.Canvas.paintComponent(Canvas.java:48)
at javax.swing.JComponent.paint(Unknown Source)
at javax.swing.JComponent.paintChildren(Unknown Source)
at javax.swing.JComponent.paint(Unknown Source)
at javax.swing.JLayeredPane.paint(Unknown Source)
at javax.swing.JComponent.paintChildren(Unknown Source)
at javax.swing.JComponent.paintToOffscreen(Unknown Source)
at javax.swing.RepaintManager$PaintManager.paintDoubleBuffered(Unknown Source)
at javax.swing.RepaintManager$PaintManager.paint(Unknown Source)
at javax.swing.RepaintManager.paint(Unknown Source)
at javax.swing.JComponent.paint(Unknown Source)
at java.awt.GraphicsCallback$PaintCallback.run(Unknown Source)
at sun.awt.SunGraphicsCallback.runOneComponent(Unknown Source)
at sun.awt.SunGraphicsCallback.runComponents(Unknown Source)
at java.awt.Container.paint(Unknown Source)
at java.awt.Window.paint(Unknown Source)
at javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)
at javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)
at javax.swing.RepaintManager.prePaintDirtyRegions(Unknown Source)
at javax.swing.RepaintManager.access$700(Unknown Source)
at javax.swing.RepaintManager$ProcessingRunnable.run(Unknown Source)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$000(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)

Answer 1

您需要在每次调用 readFrame() 之间调用 Bitstream.closeFrame() - 所以

while ((frameHeader = bs.readFrame()) != null) {
    short[] pcm = getPCM(frameHeader, bs);

    bs.closeFrame();

    .. more ..