有没有可能从CameraPreview中获取一个像素？

<uses-permission android:name="android.permission.CAMERA" />

<SurfaceView
    android:id="@+id/surfaceView"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />

SurfaceView surfaceView = findViewById(R.id.surfaceView);
SurfaceHolder surfaceHolder = surfaceView.getHolder();
surfaceHolder.addCallback(new SurfaceHolder.Callback() {
    @Override
    public void surfaceCreated(SurfaceHolder holder) {
        // 初始化相机
        Camera camera = Camera.open();
        try {
            camera.setPreviewDisplay(holder);
            camera.startPreview();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    @Override
    public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
        // 相机预览尺寸发生变化时的处理
    }

    @Override
    public void surfaceDestroyed(SurfaceHolder holder) {
        // 释放相机资源
        camera.stopPreview();
        camera.release();
    }
});

camera.setPreviewCallback(new Camera.PreviewCallback() {
    @Override
    public void onPreviewFrame(byte[] data, Camera camera) {
        // 在这里处理相机预览的数据
        int pixel = getPixelFromData(data, width, height, x, y);
        // 对获取的像素进行处理
    }
});

private int getPixelFromData(byte[] data, int width, int height, int x, int y) {
    int imageFormat = camera.getParameters().getPreviewFormat();
    int pixelStride = ImageFormat.getBitsPerPixel(imageFormat) / 8;
    int rowStride = width * pixelStride;
    int offset = y * rowStride + x * pixelStride;
    
    if (imageFormat == ImageFormat.NV21) {
        int yValue = data[offset] & 0xFF;
        int uValue = data[offset + 1] & 0xFF;
        int vValue = data[offset + 2] & 0xFF;
        // 根据YUV格式计算像素值
        int red = (int) (yValue + 1.402 * (vValue - 128));
        int green = (int) (yValue - 0.344136 * (uValue - 128) - 0.714136 * (vValue - 128));
        int blue = (int) (yValue + 1.772 * (uValue - 128));
        return Color.rgb(red, green, blue);
    } else if (imageFormat == ImageFormat.RGB_565) {
        int red = (data[offset] & 0xF8) >> 3;
        int green = ((data[offset] & 0x07) << 3) | ((data[offset + 1] & 0xE0) >> 5);
        int blue = data[offset + 1] & 0x1F;
        return Color.rgb(red, green, blue);
    }
    
    return 0;
}