[FFmpeg-devel] [PATCH] make building swscale rgb template conditional

[Michael Niedermayer]

On Wed, Aug 25, 2010 at 03:37:00PM +0100, M?ns Rullg?rd wrote:
> Luca Barbato <lu_zero at gentoo.org> writes:
> 
> > On 08/25/2010 10:52 AM, Michael Niedermayer wrote:
> >>> Why does libswscale have to be this disgustingly ugly?  There's none
> >>> of this ifdef hell in libavcodec, and it has many more different kinds
> >>> of asm.
> >> 
> >> thats because swscale has more features. like being able to be compiled
> >> with just mmx2 code or just mmx code
> >
> > It's just because of the convoluted template machinery, expanding the
> > whole thing or using make targets instead of multiple inclusions would
> > probably simplify a bit the whole thing.
> 
> There are templates in libavcodec too, but it seems to get away with
> much fewer ifdefs.

thats because they do not support compiling just part of the optimizations
like just whats relevant for mmx2 cpus

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Complexity theory is the science of finding the exact solution to an
approximation. Benchmarking OTOH is finding an approximation of the exact
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