Re: [Gc-linux-devel] Framebuffer up, colorspace conversion problem

[Alexandre B. <al...@bo...>]

Le jeudi 29 janvier 2004 =E0 03:15, Michael Steil a =E9crit :
>=20
> I uploaded http://www.gc-linux.org/down/cfbimgblt.c , a quick fix to do=
=20
> YUYV (all conversion code by Costis). The problem is: It needs floating=
=20
> point, and the linker complains that there are no floating point=20
> libraries.
>=20

the YUYV conversion doesn't really need floating point.

you can simply do something like :

y =3D (299 * r + 587 * g + 114 * b) / 1000;
cb =3D ( -16874 * r - 33126 * g + 50000 * b + 12800000) / 100000;
cr =3D (50000 * r - 41869 * g - 8131 * b + 12800000) / 100000;


regards,

--=20
Alexandre Boeglin
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