Re: Framebuffer up, colorspace conversion problem

Le jeudi 29 janvier 2004 à 03:15, Michael Steil a écrit :
> 
> I uploaded http://www.gc-linux.org/down/cfbimgblt.c , a quick fix to do 
> YUYV (all conversion code by Costis). The problem is: It needs floating 
> point, and the linker complains that there are no floating point 
> libraries.
> 

the YUYV conversion doesn't really need floating point.

you can simply do something like :

y = (299 * r + 587 * g + 114 * b) / 1000;
cb = ( -16874 * r - 33126 * g + 50000 * b + 12800000) / 100000;
cr = (50000 * r - 41869 * g - 8131 * b + 12800000) / 100000;


regards,

-- 
Alexandre Boeglin
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