AForge.Imaging.UnmanagedImage.FromManagedImage C# (CSharp) Method

        public static UnmanagedImage FromManagedImage( BitmapData imageData )
        {
            PixelFormat pixelFormat = imageData.PixelFormat;

            // check source pixel format
            if (
                ( pixelFormat != PixelFormat.Format8bppIndexed ) &&
                ( pixelFormat != PixelFormat.Format16bppGrayScale ) &&
                ( pixelFormat != PixelFormat.Format24bppRgb ) &&
                ( pixelFormat != PixelFormat.Format32bppRgb ) &&
                ( pixelFormat != PixelFormat.Format32bppArgb ) &&
                ( pixelFormat != PixelFormat.Format32bppPArgb ) &&
                ( pixelFormat != PixelFormat.Format48bppRgb ) &&
                ( pixelFormat != PixelFormat.Format64bppArgb ) &&
                ( pixelFormat != PixelFormat.Format64bppPArgb ) )
            {
                throw new UnsupportedImageFormatException( "Unsupported pixel format of the source image." );
            }

            // allocate memory for the image
            IntPtr dstImageData = System.Runtime.InteropServices.Marshal.AllocHGlobal( imageData.Stride * imageData.Height );

            UnmanagedImage image = new UnmanagedImage( dstImageData, imageData.Width, imageData.Height, imageData.Stride, pixelFormat );
            AForge.SystemTools.CopyUnmanagedMemory( dstImageData, imageData.Scan0, imageData.Stride * imageData.Height );
            image.mustBeDisposed = true;

            return image;
        }