bug#34050: [PATCH] gnu: Add libaom and activate AV1 support in ffmpeg. updated

[Leo Famulari <leo@famulari.name>]

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On Tue, Mar 05, 2019 at 03:12:07PM -0500, Leo Famulari wrote:
> On Sat, Jan 19, 2019 at 12:13:49AM +0100, Arne Babenhauserheide wrote:
> > +(define-public libaom
> > +  (package
> > +    (name "libaom")
> > +    (version "22b150bf040608028a56d8bf39e72f771383d836") ;; master
> 
> Typically we only package tagged releases. I think the latest libaom
> release is 'v1.0.0-errata1'. Can we use that or did it not work for you?
> If you didn't try it, I can do it here.

To answer my own question, 1.0.0-errata1 installs a broken pkg-config
.pc file [0].

This is fixed in a later commit [1] ... we might as well use the commit
you chose originally, which is later than the pkg-config fix commit.

This library's decoder is *very* expensive — it can't even decode
1280x720 in realtime on my Ivy Bridge i5-3230M. I'm sure it only gets
faster as they keep working on it.

I changed the libaom package to be more idiomatic about versioning from
Git [2] and edited the synopsis and description, and pushed as
84eb265eb8076876d2b569bcdff1e44b44b4b295

Thanks a lot!

[0]
https://bugs.chromium.org/p/aomedia/issues/detail?id=1988

[1]
https://aomedia.googlesource.com/aom/+/0ddc150516b7672101265eac032a11a9aae4cb53

[2]
https://www.gnu.org/software/guix/manual/en/html_node/Version-Numbers.html

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