public void onPreviewFrame(final byte[] data, Camera camera) {

    Thread showPic = new Thread(new Runnable() {

        @Override
        public void run() {
            // TODO Auto-generated method stub
            Canvas c = mHolder.lockCanvas(null);
            try {

                synchronized (mHolder) {

                    // TODO Auto-generated method stub
                    int imageWidth = mCamera.getParameters()
                            .getPreviewSize().width;
                    int imageHeight = mCamera.getParameters()
                            .getPreviewSize().height;
                    int RGBData[] = new int[imageWidth * imageHeight];
                    int RGBDataa[] = new int[imageWidth * imageHeight];
                    int RGBDatab[] = new int[imageWidth * imageHeight];
                    int center = imageWidth * imageHeight / 2;

                    Jni.decodeYUV420SP(RGBData, data, imageWidth,
                            imageHeight); // decode
                    for (int i = 0; i < center; i++)
                        RGBDataa[i] = RGBData[i];
                    for (int i = center; i < imageWidth * imageHeight; i++)
                        RGBDatab[i - center] = RGBData[i];
                    for (int i = 0; i < center; i++)
                        RGBData[i] = RGBDatab[i];
                    for (int i = center; i < imageWidth * imageHeight; i++)
                        RGBData[i] = RGBDataa[i - center];

                    c.drawBitmap(RGBData, 0, imageWidth, 0, 0, imageWidth,
                            imageHeight, false, new Paint());

                    // Bitmap bm = Bitmap.createBitmap(RGBData, imageWidth,
                    // imageHeight, Config.ARGB_8888);

                }

            } finally {
                if (data != null)
                    mHolder.unlockCanvasAndPost(c);
            }
        }
    });
    showPic.run();

}

public class Jni {
public native static void decodeYUV420SP(int[] rgb, byte[] yuv420sp, int width,
        int height);

public void decodeYUV420SP(int[] rgb, byte[] yuv420sp, int width, int height) {
    final int frameSize = width * height;

    for (int j = 0, yp = 0; j < height; j++) {
        int uvp = frameSize + (j >> 1) * width, u = 0, v = 0;
        for (int i = 0; i < width; i++, yp++) {
            int y = (0xff & ((int) yuv420sp[yp])) - 16;
            if (y < 0) y = 0;
            if ((i & 1) == 0) {
                v = (0xff & yuv420sp[uvp++]) - 128;
                u = (0xff & yuv420sp[uvp++]) - 128;
            }

            int y1192 = 1192 * y;
            int r = (y1192 + 1634 * v);
            int g = (y1192 - 833 * v - 400 * u);
            int b = (y1192 + 2066 * u);

            if (r < 0) r = 0; else if (r > 262143) r = 262143;
            if (g < 0) g = 0; else if (g > 262143) g = 262143;
            if (b < 0) b = 0; else if (b > 262143) b = 262143;

            rgb[yp] = 0xff000000 | ((r << 6) & 0xff0000) | ((g >> 2) & 0xff00) | ((b >> 10) & 0xff);
        }
    }
}

Camera.Parameters.setPreviewFormat(ImageFormat.RGB_565);