public override PixelBuffer ReadPixels(PixelFormat format, Geometry.Rectangle rect)
{
BitmapData data = mImage.LockBits(Interop.Convert(rect), ImageLockMode.ReadOnly,
System.Drawing.Imaging.PixelFormat.Format32bppArgb);
if (format == PixelFormat.Any)
{
format = PixelFormat.BGRA8888;
}
PixelBuffer buffer = new PixelBuffer(format, rect.Size);
byte[] bytes = new byte[4 * rect.Width * rect.Height];
Marshal.Copy(data.Scan0, bytes, 0, bytes.Length);
mImage.UnlockBits(data);
buffer.SetData(bytes, PixelFormat.BGRA8888);
return(buffer);
}