[bug#28917] gst-transcoder + python-pycanberra + gavl (pitivi dependencies)

[Kei Kebreau <kkebreau@posteo.net>]

ng0 <ng0@infotropique.org> writes:

> ng0 transcribed 1.4K bytes:
>> ng0 transcribed 10K bytes:
>> > This adds gst-transcoder, python-pycanberra and gavl
>> > required for pitivi.
>> 
>> Yarg. I've sent the wrong python-pycanberra. Correction incoming.
>
> Correction appended.
>
> -- 
> ng0
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> https://www.infotropique.org https://ng0.infotropique.org
>
>
>
> From b97a66068be69bc53d654d6204cdb1df5c889dd6 Mon Sep 17 00:00:00 2001
> From: ng0 <ng0@infotropique.org>
> Date: Fri, 20 Oct 2017 18:32:12 +0000
> Subject: [PATCH 3/3] gnu: Add gavl.
>
> * gnu/packages/video.scm (gavl): New variable.
> ---
>  gnu/packages/video.scm | 34 ++++++++++++++++++++++++++++++++++
>  1 file changed, 34 insertions(+)
>
> diff --git a/gnu/packages/video.scm b/gnu/packages/video.scm
> index baebe6404..7294c5bf2 100644
> --- a/gnu/packages/video.scm
> +++ b/gnu/packages/video.scm
> @@ -69,6 +69,7 @@
>    #:use-module (gnu packages databases)
>    #:use-module (gnu packages dejagnu)
>    #:use-module (gnu packages docbook)
> +  #:use-module (gnu packages documentation)
>    #:use-module (gnu packages elf)
>    #:use-module (gnu packages file)
>    #:use-module (gnu packages flex)
> @@ -2499,3 +2500,36 @@ tools for styling them, including a built-in real-time video preview.")
>      (synopsis "GStreamer Transcoding API")
>      (description "GStreamer Transcoding API")
>      (license license:lgpl2.1)))
> +
> +(define-public gavl
> +  (package
> +    (name "gavl")
> +    (version "1.4.0")
> +    (source
> +     (origin
> +       (method url-fetch)
> +       (uri (string-append "mirror://sourceforge/gmerlin/"
> +                           name "/" version "/"
> +                           name "-" version ".tar.gz"))
> +       (file-name (string-append name "-" version ".tar.gz"))
> +       (sha256
> +        (base32
> +         "1kikkn971a14zzm7svi7190ldc14fjai0xyhpbcmp48s750sraji"))))
> +    (build-system gnu-build-system)
> +    (native-inputs
> +     `(("pkg-config" ,pkg-config)
> +       ("doxygen" ,doxygen)))
> +    (home-page "http://gmerlin.sourceforge.net")
> +    (synopsis "low level library for multimedia API building")
> +    (description
> +     "Gavl is short for Gmerlin Audio Video Library.  It is a low level
> +library, upon which multimedia APIs can be built.  Gavl handles all the
> +details of audio and video formats like colorspaces, samplerates,

"samplerates" should be two words.

> +multichannel configurations etc.  It provides standardized definitions for
                              ^
               a comma after "configurations" would be nice.
> +those formats as well as container structures for carrying audio samples or
> +video images inside an application.
> +
> +In addition, it handles the sometimes ugly task to convert between all

Instead of "ugly task to convert..." perhaps we can say "ugly task of
converting..."

> +these formats and provides some elementary operations (copying, scaling,
> +alpha blending etc).")
> +    (license license:gpl3)))

I suppose the changes to gavl's description could be forwarded upstream,
seeing as this is the same description as the one
gmerlin.sourceforge.net uses.

Everything else LGTM. Thanks for working on this!