internal static unsafe System.Drawing.Bitmap ToSystemDrawingBitmap <TPixel>(Image <TPixel> image)
            where TPixel : struct, IPixel <TPixel>
        {
            int w = image.Width;
            int h = image.Height;

            var        resultBitmap = new System.Drawing.Bitmap(w, h, PixelFormat.Format32bppArgb);
            var        fullRect     = new System.Drawing.Rectangle(0, 0, w, h);
            BitmapData data         = resultBitmap.LockBits(fullRect, ImageLockMode.ReadWrite, resultBitmap.PixelFormat);
            byte *     destPtrBase  = (byte *)data.Scan0;

            long destRowByteCount   = data.Stride;
            long sourceRowByteCount = w * sizeof(Bgra32);

            using (IBuffer <Bgra32> workBuffer = image.GetConfiguration().MemoryManager.Allocate <Bgra32>(w))
            {
                fixed(Bgra32 *sourcePtr = &workBuffer.DangerousGetPinnableReference())
                {
                    for (int y = 0; y < h; y++)
                    {
                        Span <TPixel> row = image.Frames.RootFrame.GetPixelRowSpan(y);
                        PixelOperations <TPixel> .Instance.ToBgra32(row, workBuffer.Span, row.Length);

                        byte *destPtr = destPtrBase + data.Stride * y;

                        Buffer.MemoryCopy(sourcePtr, destPtr, destRowByteCount, sourceRowByteCount);
                    }
                }
            }

            resultBitmap.UnlockBits(data);

            return(resultBitmap);
        }
        /// <summary>
        /// TODO: Doesn not work yet!
        /// </summary>
        internal static unsafe Image <TPixel> FromFromRgb24SystemDrawingBitmap <TPixel>(System.Drawing.Bitmap bmp)
            where TPixel : struct, IPixel <TPixel>
        {
            int w = bmp.Width;
            int h = bmp.Height;

            var fullRect = new System.Drawing.Rectangle(0, 0, w, h);

            if (bmp.PixelFormat != PixelFormat.Format24bppRgb)
            {
                throw new ArgumentException($"FromFromArgb32SystemDrawingBitmap(): pixel format should be Rgb24!", nameof(bmp));
            }

            BitmapData data          = bmp.LockBits(fullRect, ImageLockMode.ReadWrite, bmp.PixelFormat);
            byte *     sourcePtrBase = (byte *)data.Scan0;

            long sourceRowByteCount = data.Stride;
            long destRowByteCount   = w * sizeof(Bgr24);

            var image = new Image <TPixel>(w, h);

            using (IBuffer <Bgr24> workBuffer = Configuration.Default.MemoryManager.Allocate <Bgr24>(w))
            {
                fixed(Bgr24 *destPtr = &workBuffer.DangerousGetPinnableReference())
                {
                    for (int y = 0; y < h; y++)
                    {
                        Span <TPixel> row = image.Frames.RootFrame.GetPixelRowSpan(y);

                        byte *sourcePtr = sourcePtrBase + data.Stride * y;

                        Buffer.MemoryCopy(sourcePtr, destPtr, destRowByteCount, sourceRowByteCount);
                        PixelOperations <TPixel> .Instance.PackFromBgr24(workBuffer.Span, row, row.Length);

                        // FromRgb24(workBuffer.Span, row);
                    }
                }
            }

            return(image);
        }