[FFmpeg-cvslog] avcodec/utvideodec: add SIMD support for median prediction for planar formats
Michael Niedermayer
michael at niedermayer.cc
Sat Dec 24 05:07:27 EET 2016
On Fri, Dec 23, 2016 at 05:44:22PM +0100, Paul B Mahol wrote:
> ffmpeg | branch: master | Paul B Mahol <onemda at gmail.com> | Fri Dec 23 15:41:51 2016 +0100| [ea93052db3594f93f2d10be085a770184da0513d] | committer: Paul B Mahol
>
> avcodec/utvideodec: add SIMD support for median prediction for planar formats
>
> ~10% faster overall.
>
> Signed-off-by: Paul B Mahol <onemda at gmail.com>
>
> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=ea93052db3594f93f2d10be085a770184da0513d
> ---
>
> configure | 2 +-
> libavcodec/utvideo.h | 2 +
> libavcodec/utvideodec.c | 164 +++++++++++++++++++++++++++++++++++++++---------
> libavcodec/utvideoenc.c | 3 +
> 4 files changed, 140 insertions(+), 31 deletions(-)
This breaks
> create a file with: (can be any ffmpeg version)
> ./ffmpeg -i matrixbench_mpeg2.mpg -an -vcodec utvideo -t 1 -pix_fmt yuv420p -pred median utv.avi
>
> if this is played with ffplay (with patch) it shows a brighter
> artifact on the left side of te screen
[...]
--
Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
Its not that you shouldnt use gotos but rather that you should write
readable code and code with gotos often but not always is less readable
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