Android和带有java.lang.IllegalArgumentException的MJPEG

Question

我已经实现了帖子中的演示：Android和MJPEG

但应用程序总是在一段时间后出现错误,我得到了一个异常：

java.lang.IllegalArgumentException: Invalid Unicode sequence: illegal character

public void run() {
    start = System.currentTimeMillis();
    PorterDuffXfermode mode = new PorterDuffXfermode(PorterDuff.Mode.DST_OVER);
    Bitmap bm;
    int width;
    int height;
    Rect destRect;
    Canvas c = null;
    Paint p = new Paint();
    String fps = "";
    while (mRun)
    {
        if(surfaceDone)
        {
            try
            {
                c = mSurfaceHolder.lockCanvas();
                synchronized (mSurfaceHolder)
                {
                    try
                    {
                        bm = mIn.readMjpegFrame();
                        destRect = destRect(bm.getWidth(),bm.getHeight());
                        c.drawColor(Color.BLACK);
                        c.drawBitmap(bm, null, destRect, p);
                        if(showFps) {
                            p.setXfermode(mode);
                            if(ovl != null) {
                                height = ((ovlPos & 1) == 1) ? destRect.top : destRect.bottom-ovl.getHeight();
                                width  = ((ovlPos & 8) == 8) ? destRect.left : destRect.right -ovl.getWidth();
                                c.drawBitmap(ovl, width, height, null);
                            }
                            p.setXfermode(null);
                            frameCounter++;
                            if((System.currentTimeMillis() - start) >= 1000) {
                                fps = String.valueOf(frameCounter)+"fps";
                                frameCounter = 0; 
                                start = System.currentTimeMillis();
                                ovl = makeFpsOverlay(overlayPaint, fps);
                            }
                        }
                    }
                    catch (IOException e)
                    {
                        Log.i(TAG, "Error: "+e);
                    }
                }
            }
            catch (Exception e)
            {
                Log.i(TAG, "Error: "+e);
            }
            finally
            {
                if (c != null)
                    mSurfaceHolder.unlockCanvasAndPost(c);
            }
        }
    }
}

    09-27 17:06:36.645: D/dalvikvm(10120): threadid=9: still suspended after undo (sc=1 dc=1)
    09-27 17:06:46.745: D/dalvikvm(10120): GC_EXTERNAL_ALLOC freed 132K, 47% free 2998K/5575K, external 1625K/2137K, paused 44ms
    09-27 17:06:46.825: D/dalvikvm(10120): GC_EXTERNAL_ALLOC freed 65K, 47% free 2997K/5639K, external 2227K/2779K, paused 27ms
    09-27 17:06:46.955: D/dalvikvm(10120): GC_EXTERNAL_ALLOC freed 127K, 48% free 2997K/5703K, external 2827K/2827K, paused 40ms
    09-27 17:06:47.385: D/dalvikvm(10120): GC_EXTERNAL_ALLOC freed 142K, 48% free 3000K/5703K, external 2827K/2827K, paused 31ms
    09-27 17:06:47.515: D/dalvikvm(10120): GC_EXTERNAL_ALLOC freed 131K, 48% free 2997K/5703K, external 2827K/2827K, paused 27ms
    09-27 17:06:47.615: D/dalvikvm(10120): GC_EXTERNAL_ALLOC freed 127K, 48% free 2997K/5703K, external 2827K/2827K, paused 31ms

Answer 1

我知道这是一个有点旧，但我找到了一个解决这个问题的方法，代码工作完美，它是相机，FPS可能设置为“可变”或“自动”。我使用的是TrendNet TV-IP551WI，默认设置是FPS的“自动”，我注意到在5-15秒后，程序会崩溃，我会得到这个错误，我还注意到它很急，导致我相信FPS是不对的。但是在将fps设置为固定速率后（不管什么只要选择一个，我选择了20），错误应该会消失，它不应该再出现了。