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Best format and method for very fast CGImage resizing

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Best format and method for very fast CGImage resizing

Subject: Best format and method for very fast CGImage resizing
From: Ken Tozier <email@hidden>
Date: Sun, 22 Apr 2007 16:07:40 -0400

Hi

I have some code that generates page thumbnails and presents a grid of these thumbnails that I want to be live-resizable exactly like the thumbnails in iPhoto. I have the grid and image generating code worked out but just need to know the fastest possible way to redraw these images.

As it stands now, I create the thumbnails as a CGImages inside a CGUtilCreateBitmapContext. Should I convert them to CIImages? NSImages? From there, what would be faster: An affine transform in the draw method? Or a CIImage transform?

I have no idea what method produces the fastest resizes so any help greatly appreciated.

Ken
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