/// <summary>
/// Creates an <see cref="Image"/> object from this Leptonica's <see cref="Pix"/> object.
/// </summary>
/// <returns>
/// The <see cref="Image"/> object this method creates.
/// </returns>
public Image ToImage()
{
NativeMethods.pixGetDimensions(this.handle, out int w, out int h, out int d);
NativeMethods.pixGetResolution(this.handle, out int xres, out int yres);
IntPtr src = NativeMethods.pixGetData(this.handle);
int wpl = NativeMethods.pixGetWpl(this.handle);
Image image = new Image(w, h, d, xres == 0 ? 200 : xres, yres == 0 ? 200 : yres);
unsafe
{
fixed(ulong *bits = image.Bits)
{
uint *dst = (uint *)bits;
Arrays.CopyStrides(image.Height, src, wpl * sizeof(uint), new IntPtr(dst), image.Stride8);
int count = image.Bits.Length * 2; // work with 32-bit words
BitUtils.BiteSwap(count, dst);
if (image.BitsPerPixel < 8)
{
Vectors.SwapBits(count, image.BitsPerPixel, dst);
}
}
}
return(image);
}
/// <summary>
/// Creates a new Leptonica's <see cref="Pix"/> object from the <see cref="Image"/>.
/// </summary>
/// <param name="image">The <see cref="Image"/> to convert.</param>
/// <returns>
/// The <see cref="Pix"/> object this method creates.
/// </returns>
public static Pix FromImage(Image image)
{
if (image == null)
{
throw new ArgumentNullException(nameof(image));
}
SafePixHandle handle = NativeMethods.pixCreate(image.Width, image.Height, image.BitsPerPixel);
try
{
NativeMethods.pixSetResolution(handle, image.HorizontalResolution, image.VerticalResolution);
unsafe
{
uint *dst = (uint *)NativeMethods.pixGetData(handle).ToPointer();
int wpl = NativeMethods.pixGetWpl(handle);
fixed(ulong *src = image.Bits)
{
Arrays.CopyStrides(image.Height, new IntPtr(src), image.Stride8, new IntPtr(dst), wpl * sizeof(uint));
int count = image.Height * wpl;
BitUtils.BiteSwap(count, dst);
if (image.BitsPerPixel < 8)
{
Vectors.SwapBits(count, image.BitsPerPixel, dst);
}
}
}
}
catch
{
handle?.Dispose();
throw;
}
return(new Pix(handle));
}