[FFmpeg-devel] [PATCH] swscale/output: VSX-optimize nbps yuv2plane1

Lauri Kasanen cand at gmx.com
Fri Dec 7 15:08:53 EET 2018


On Fri, 7 Dec 2018 13:50:12 +0100
Carl Eugen Hoyos <ceffmpeg at gmail.com> wrote:

> > Carl Eugen Hoyos <ceffmpeg at gmail.com> wrote:
> >> 2018-11-27 14:26 GMT+01:00, Lauri Kasanen <cand at gmx.com>:
> >> > Fate passes, each format tested with an image to video conversion.
> >> >
> >> > Depends on "swscale/ppc: Move VSX-using code to its own file".
> >>
> >> > Only tested on LE.
> >>
> >> This patch breaks output on BE, tested with fate-v410enc and:
> >> $ ffmpeg -i fate-suite/lena.pnm -pix_fmt yuv420p10 -vcodec ffv1 out.nut
> >
> > Just checking, was that with the !BE guards removed?
> 
> Correct, sorry for being unclear.
> 
> > Otherwise I don't see how it could affect BE?
> 
> Yes.

Okay, so it otherwise didn't affect BE. Can it be applied, or is BE a
requirement? This is a simple function, and I can guess how to change
it, but for future more complex functions I rather don't want to
blindly try.

LE is the common case for newer POWER really, many distros don't even
support BE.

- Lauri


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