[FFmpeg-devel] next Outreachy & GSoC ideas braindump [RFC]

[Michael Niedermayer]

On Wed, Aug 03, 2016 at 07:48:36PM -0400, Ronald S. Bultje wrote:
> Hi,
> 
> On Wed, Aug 3, 2016 at 1:57 PM, Michael Niedermayer <michael at niedermayer.cc>
> wrote:
> 
> > Hi all
> >
> > Sun, Jul 31, 2016 at 10:01:00PM +0200, Michael Niedermayer wrote:
> > > Hi all
> > >
> > > you have a great idea for a Outreachy task or a GSoC task ?
> > > Or something you always wanted to do but never had the time and
> > > it would fit in the time for GSoC/Outreachy ?
> > > Or some feature you always wanted which would fit as a task?
> > > Also keep in mind Outreachy is more flexible and not limited to
> > > coding tasks !
> > > reply and dump it here below:
> >
> > ping ?
> >
> > also cc-ing ffmpeg-user
> >
> > or are all feature requests on trac fake and noone has anything they
> > think should be implemented ?
> >
> > we need ideas for Outreachy, the page is EMPTY:
> > https://trac.ffmpeg.org/wiki/SponsoringPrograms/Outreachy/2016-12
> 
> 
> I have some ideas. Most are TODOs / extensions to stuff I wrote that I
> never ended up doing myself. Some might be hard.
> 
> vp9:
> - avx2 loopfilter functions. Qualification task: explain to me without any
> guidance why it's an issue for AVX2 (or SSE2) that the loopfilter in vp9.c
> works on 8px blocks, and explain how I solved that to work on 16px blocks
> to use SSE2 instructions, and likewise explain how you would extend that to
> work on 32px blocks.

the Qualification task sounds interresting, we required for applicants
though always to submit a patch that then gets reveiwed and applied.
Generally a small/tiny part of the whole project.
So i would suggest to require the applicant to do that as well as your
Qualification task


> - coefficient reading optimizations or arithmetic symbol reading
> optimizations. I think this is too hard but it would be an amazing speed
> optimization in vp9 decoding, since this is where pretty much all runtime
> is spent after other optimizations.
> - tile threading. This may actually be a nice qual task for the next block
> since this is quite easy.
> 
> frame/slice-mt:
> - implement a mode that allows combining those. Qual task could be to
> implement vp9 tile threading or something like that. Final deliverable
> would implement this for at least vpN codec and one h.26x codec.
> 
> I'll think about others. I'm willing to mentor the above maybe.

please add any projects you want to mentor to the page.

thx

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

No great genius has ever existed without some touch of madness. -- Aristotle
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