Print Page - converting TImgaingBitmap to CMBitmap

Title: converting TImgaingBitmap to CMBitmap
Post by: jus2 on 8 June 2011, 12:07:26

Hi,

I'm using Lazarus (Mac OSX) and the Vampyre library. I'm trying to find out how to use the colorsync for color conversion with icc profiles. :'( The mac colorsync API function "CWMatchBitmap" needs CMBitmap. Does Vampyre provides a function for converting TImagingBitmap/TImageData to CMBitmap? if not how can do the conversion to CMBitmap?

The structure/record of CMBitmap is definded in Lazarus as following:

Code (pascal) Select


CMBitmap = record
		image: CStringPtr;
		width: size_t;
		height: size_t;
		rowBytes: size_t;
		pixelSize: size_t;
		space: CMBitmapColorSpace;
		user1: UInt32;
		user2: UInt32;

Thanks! :)

jus

Title: Re: converting TImgaingBitmap to CMBitmap
Post by: Galfar on 8 June 2011, 16:42:35

Hi, it should be quite easy to convert TImageData to CMBitmap:

CMBitmap.image is TImageData.Bits
Width and Height is easy
CMBitmap.pixelSize is 8 * Fmt.BytesPerPixel (use GetImageFormatInfo function to get this)
CMBitmap.rowBytes is Width * CMBitmap.pixelSize

Then you need to set CmBitmap.space according to TImageData.Format,
mostly cmRGB24Space or cmRGBA32Space is used.

Title: Re: converting TImgaingBitmap to CMBitmap
Post by: jus on 10 June 2011, 00:58:54

Hi Galfar,

thank you so much for the prompt reply. I'll try to implement. :)

Best regards,
jus

Vampyre Imaging Library Forum

Imaging Category => Help & Questions => Topic started by: jus2 on 8 June 2011, 12:07:26