[FFmpeg-devel] [FFmpeg-cvslog] avcodec/utvideodec: add vlc multi support

[Paul B Mahol]

On Sat, Sep 16, 2023 at 6:40 PM Michael Niedermayer <michael at niedermayer.cc>
wrote:

> On Fri, Sep 15, 2023 at 01:24:39AM +0200, Paul B Mahol wrote:
> > On Fri, Sep 15, 2023 at 12:19 AM Michael Niedermayer <
> michael at niedermayer.cc>
> > wrote:
> >
> > > On Wed, Sep 06, 2023 at 10:19:29PM +0000, Christophe Gisquet wrote:
> > > > ffmpeg | branch: master | Christophe Gisquet <
> > > christophe.gisquet at gmail.com> | Sun Jul  9 12:56:35 2017 +0000|
> > > [da888b790af779a7489068c25f9e7ab8ac653d41] | committer: Paul B Mahol
> > > >
> > > > avcodec/utvideodec: add vlc multi support
> > > >
> > > > Faster decoding, by average 50% faster overall.
> > > >
> > > > >
> > >
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=da888b790af779a7489068c25f9e7ab8ac653d41
> > > > ---
> > > >
> > > >  libavcodec/utvideo.h    |  1 +
> > > >  libavcodec/utvideodec.c | 92
> > > ++++++++++++++++++++++++-------------------------
> > > >  2 files changed, 46 insertions(+), 47 deletions(-)
> > > >
> > > > diff --git a/libavcodec/utvideo.h b/libavcodec/utvideo.h
> > > > index 9da9329ff3..e5160aa394 100644
> > > > --- a/libavcodec/utvideo.h
> > > > +++ b/libavcodec/utvideo.h
> > > > @@ -81,6 +81,7 @@ typedef struct UtvideoContext {
> > > >      ptrdiff_t slice_stride;
> > > >      uint8_t *slice_bits, *slice_buffer[4];
> > > >      int      slice_bits_size;
> > > > +    void    *buffer;
> > > >
> > > >      const uint8_t *packed_stream[4][256];
> > > >      size_t packed_stream_size[4][256];
> > > > diff --git a/libavcodec/utvideodec.c b/libavcodec/utvideodec.c
> > > > index 1f00c58950..ab390be0fa 100644
> > > > --- a/libavcodec/utvideodec.c
> > > > +++ b/libavcodec/utvideodec.c
> > > > @@ -46,7 +46,7 @@ typedef struct HuffEntry {
> > > >  } HuffEntry;
> > > >
> > > >  static int build_huff(UtvideoContext *c, const uint8_t *src, VLC
> *vlc,
> > > > -                      int *fsym, unsigned nb_elems)
> > > > +                      VLC_MULTI *multi, int *fsym, unsigned
> nb_elems)
> > > >  {
> > >
> > > before this patch the whole application finishes within 130ms
> > > after this patch with teh short table
> > >
> > >
> > >
> 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,24,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,24,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
> > >
> >
> > This is of no use to me.
> > If you have file then provide it.
>
> I dont have one but I made one for you
> its attached
>

See vlc patch on ML.


>
>
> [...]
> --
> Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
>
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> will be no State. -- Vladimir Lenin
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