[FFmpeg-devel] [PATCH 34/39] avcodec/mpegvideoencdsp: Allow pointers to const where possible

Anton Khirnov anton at khirnov.net
Tue Aug 2 12:30:39 EEST 2022


Quoting Michael Niedermayer (2022-07-30 19:12:39)
> On Sat, Jul 30, 2022 at 11:55:45AM +0200, Andreas Rheinhardt wrote:
> > Michael Niedermayer:
> > > On Wed, Jul 27, 2022 at 12:08:09AM +0200, Andreas Rheinhardt wrote:
> > >> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt at outlook.com>
> > >> ---
> > >>  libavcodec/arm/mpegvideoencdsp_init_arm.c  |  4 ++--
> > >>  libavcodec/mips/h263dsp_mips.h             |  2 +-
> > >>  libavcodec/mips/mpegvideoencdsp_msa.c      |  4 ++--
> > >>  libavcodec/mpegvideoencdsp.c               | 10 +++++-----
> > >>  libavcodec/mpegvideoencdsp.h               | 10 +++++-----
> > >>  libavcodec/ppc/mpegvideoencdsp.c           |  8 ++++----
> > >>  libavcodec/x86/mpegvideoenc_qns_template.c |  4 ++--
> > >>  libavcodec/x86/mpegvideoencdsp.asm         |  4 ++--
> > >>  libavcodec/x86/mpegvideoencdsp_init.c      |  6 +++---
> > >>  9 files changed, 26 insertions(+), 26 deletions(-)
> > > 
> > > LGTM, also all similar things should be ok
> > > 
> > > [...]
> > > 
> > 
> > Unfortunately, it is not so easy. The first version of this patchset
> > (this here) forgot to update the definitions of several loongarch
> > functions, leading to lots of red on patchwork. The second version fixed
> > the compilation error, but forgot some constifications due to
> > unfortunate oversights. For the third version, I wanted to actually
> > compile loongarch instead of just staring at the code; but the
> > GCC-cross-compiler does not seem to support lsx and lasx (and looking at
> > the loongarch-code in GCC makes me believe that they are just not
> > supported (yet)). Therefore I resorted to creating dummy-functions for
> > all the __lasx_* and __lsx_* functions (they show no more
> > const-warnings). I wanted to let the FATE-loongarch-box test this once
> > more (and tell me whether there are still any issues left), yet this box
> > is no longer active since a few days (for reasons unknown). Can you
> > compile the lsx and lasx code (after all, you committed all the
> > loongarch code)?
> 
> i have no easy way to test loongarch, what i can test is qemu-mips.
> i think i have said that a few times already.
> 
> I do have a loongson box that is IIRC ready to be shipped (within EU) to
> whoever volunteers to maintain that box for FFmpeg. I dont know if that
> box would help with the current code. The OS will liklely need to be updated
> and IIRC this has no normal update mechanism) I didnt touch this box for a
> really long time.

What OS is it?

I could conceivably host such a machine and give other devs SSH access
to it, if it does not require too much maintenance and/or electricity.

-- 
Anton Khirnov


More information about the ffmpeg-devel mailing list