How to convert 32bit to 24 bit NSBitmapImageRep

FROM : Vinay Prabhu
DATE : Wed Jul 26 16:39:32 2006

Hi,

Is there any direct API to convert from 32 bit to 24 bit NSBitmapImageRep?

I couldn't find any direct way, I have tried 2 methods,
1) Obtained the data pointer from 32 bit NSBitmapImageRep, and created new
image rep
using the initWithBitmapDataPlanes API.
This resulted in junk output.

2) Created a new image rep using the initWithBitmapDataPlanes API by passing
"nil" for data pointer.
Then obtained the data pointer using "bitmapData" API and copied the data
from 32 bit to 24 bit, without passing alpha information.
This also resulted in junk output

Any better method to do this?

Thanks in advance.
Regards
Vinay

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