[FFmpeg-devel] [PATCH] swscale/ppc: remove AltiVec acceleration for YUV->RGB conversions

[Sean McGovern]

Hi Andreas,


On Fri, Nov 15, 2024, 14:34 Andreas Rheinhardt <
andreas.rheinhardt at outlook.com> wrote:

> Sean McGovern:
> > Even on a reasonably modern POWER9 (ppc64le), it does not function
> correctly.
>
> IMO the commit message should contain a bit more information about what
> doesn't function correctly.
>

I don't feel like I have the cycle or the expertise to fix this myself. The
failures are visible for 'checkasm-sw_rgb' on the PPC FATE nodes that run
the test suite.

I do need for Debian to re-enable AltiVec & VSX in their packages. It was
disabled wholesale a few months ago on the assertion that we haven't dealt
with any of the test failures.

I doubt anyone else can/will step up to the plate any time soon. But fine,
if this is a sticking point I think I will instead submit a patch to '#if
0' out the offending accelerations.

-- Sean McGovern