On Sun, Feb 19, 2012 at 07:05:04AM -0800, Ronald S. Bultje wrote:
> Hi,
> 
> On Sun, Feb 19, 2012 at 7:02 AM, Kostya Shishkov
> <[email protected]> wrote:
> > On Sun, Feb 19, 2012 at 06:41:55AM -0800, Ronald S. Bultje wrote:
> >> Hi,
> >>
> >> On Sun, Feb 19, 2012 at 2:02 AM, Luca Barbato <[email protected]> wrote:
> >> > On 19/02/12 09:08, Kostya Shishkov wrote:
> >> >> This also makes encoder take DCT permutation into account as well.
> >> >> ---
> >> >>  libavcodec/proresdec.c |   10 +++++-----
> >> >>  libavcodec/proresdsp.c |   11 +++++++++++
> >> >>  libavcodec/proresdsp.h |    1 +
> >> >>  libavcodec/proresenc.c |   14 +++++++-------
> >> >>  4 files changed, 24 insertions(+), 12 deletions(-)
> >> >
> >> > Ok.
> >>
> >> Wait, what happened to make dspcontext smaller?
> >
> > nothing, look at the file list again
> 
> Oh I see. So why is this in dsp then? We can't x86-SIMD this since it
> uses an indexed table (out[]), where the index is non-linear (scan[]).

It's not scantable, it's permutation table. So if there's no permutation you
can simply multiply input matrix by quant without reordering.
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