From: Liliana Marie Prikler <liliana.prikler@gmail.com>
To: Maxim Cournoyer <maxim.cournoyer@gmail.com>
Cc: Raghav Gururajan <rg@raghavgururajan.name>, 65668@debbugs.gnu.org
Subject: [bug#65668] [PATCH] gnu: gst-plugins-bad: Remove the svt-hevc input.
Date: Sat, 02 Sep 2023 06:59:29 +0200 [thread overview]
Message-ID: <c4e8f02d7117d9ac3d315054a6aca049bb30fa37.camel@gmail.com> (raw)
In-Reply-To: <878r9p1gxj.fsf@gmail.com>
Am Freitag, dem 01.09.2023 um 21:51 -0400 schrieb Maxim Cournoyer:
> Hi Liliana,
>
> Liliana Marie Prikler <liliana.prikler@gmail.com> writes:
>
> > Am Donnerstag, dem 31.08.2023 um 23:08 -0400 schrieb Maxim
> > Cournoyer:
> > > * gnu/packages/gstreamer.scm (gst-plugins-bad)
> > > [inputs]: Remove svt-hevc; add comment.
> > > ---
> > > gnu/packages/gstreamer.scm | 4 +++-
> > > 1 file changed, 3 insertions(+), 1 deletion(-)
> > >
> > > diff --git a/gnu/packages/gstreamer.scm
> > > b/gnu/packages/gstreamer.scm
> > > index 86886c025f..f38d2157bd 100644
> > > --- a/gnu/packages/gstreamer.scm
> > > +++ b/gnu/packages/gstreamer.scm
> > > @@ -849,7 +849,9 @@ (define-public gst-plugins-bad
> > > (inputs
> > > (append
> > > (if (target-x86?) (list mediasdk) '())
> > > - (if (target-x86-64?) (list svt-hevc) '())
> > > + ;; Note: svt-hevc cannot be used, as it would break the
> > > package for
> > > + ;; older x86_64 CPUs such as Core 2 Duo that lack AVX2
> > > (see:
> > > + ;;
> > > https://github.com/OpenVisualCloud/SVT-HEVC/issues/573#issuecomment-680678144
> > > ).
> > > (list bluez
> > > bzip2
> > > cairo
> > I think you should put that comment above the commented existing
> > line rather than deleting it outright. We should also look into
> > building svt-hevc without those CPU extensions; perhaps using
> > tuning instead.
>
> It's not possible to build svt-hevc without those extensions: they
> are depended upon. Because it can't be used, I think it makes sense
> to not leave dead code (since it's not going to be resolved in the
> future and re-enabled).
Looking at the code of svt-hevc, these additional libraries appear to
be just adding versions of the methods already implemented in C.
You might want to look into commenting the following lines
add_subdirectory(ASM_SSE2)
add_subdirectory(ASM_SSSE3)
add_subdirectory(ASM_SSE4_1)
add_subdirectory(ASM_AVX2)
HTH
> > The comment could itself be shortened to
> > svt-hevc is broken on older x86_64 CPUs [such as…]
> > see also <URL>
> > but you do you in terms of phrasing :)
>
> :-) I've moved things a bit. Is it a 'LGTM' from you?
Well, I'd rather keep the svt-hevc issue above open than concluding it
cannot be done, but otherwise, yes, LGTM.
Cheers
next prev parent reply other threads:[~2023-09-02 5:39 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-01 3:08 [bug#65668] [PATCH] gnu: gst-plugins-bad: Remove the svt-hevc input Maxim Cournoyer
2023-09-01 4:21 ` Liliana Marie Prikler
2023-09-02 1:51 ` Maxim Cournoyer
2023-09-02 4:59 ` Liliana Marie Prikler [this message]
2023-09-03 14:49 ` Maxim Cournoyer
2023-09-06 3:47 ` bug#65668: " Maxim Cournoyer
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