[FFmpeg-devel] [PATCH] PPC64: Add versions of functions in libswscale/input.c optimized for POWER8 VSX SIMD.

[Ronald S. Bultje]

Hi,

On Thu, Jul 7, 2016 at 7:07 AM, Michael Niedermayer <michael at niedermayer.cc>
wrote:

> On Wed, Jul 06, 2016 at 07:28:27AM -0500, Dan Parrot wrote:
> > On Wed, 2016-07-06 at 09:07 +0200, Hendrik Leppkes wrote:
> [...]
>
> >
> > One other thing: why didn't this come up when the earlier patch was
> > submitted and applied?
>
> community patch review is not a reproduceable process, depending on
> who has time and does the review, different things can be found and
> pointed out, and people have also different oppinions.
> Real consistency can possibly only be achived by having an active
> maintainer that does all review ...
>
> To be more precisse the other patch was applied due to this comment
> IIRC:
>  "If this patch works (FATE passes on ppc64) and is faster than
>   the plain c functions then it can be committed as is"


How much faster was it? And how does that compare to typical sse2 x86
speedups vs. c?

Ronald