[PD] pix_freeframe

Yves Degoyon ydegoyon at free.fr
Wed Aug 30 17:44:03 CEST 2006


ola,

>
>
> i would also be interested in which context "RGBA" is twice as heavy 
> as "YUV" (with respect to Gem/pdp)
>
it's as simple as have shown dumb+dumber :

in RGBA format, a pixel is represented by 4x(data size)
in YUV planar 4:2:2 format, it is represented by :
    1Y + 1/4*U +1/4*V = 1,5*(data size )

of course, loops are much faster with YUV 4:2:2

i like the way people always argue here.

sevy




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