[FFmpeg-devel] [PATCH] h264: factor out dequant table lookup outside loops

[Michael Niedermayer]

Hi

On Mon, Sep 24, 2007 at 12:59:21PM +0200, Andreas ?man wrote:
> Hi,
>
> the attached patch does $subj, much like what I did for
> the chroma residuals earlier.
>
> Gives about 1-2% speedup.
>
> Note that I tried various loop-constructs for the 8x8DCT case,
> but this seems to be the fastest way.
>
> test_smp_fox.ts
> unmodified: avg: 3.737  stddev: 0.009  med: 3.736
> patched:    avg: 3.642  stddev: 0.010  med: 3.638
>
> ffh264_issue1.m2ts
> unmodified: avg: 23.339  stddev: 0.107  med: 23.321
> patched:    avg: 22.973  stddev: 0.201  med: 22.889
>
> ffh264_issue3.h264
> unmodified: avg: 10.090  stddev: 0.121  med: 10.053
> patched:    avg: 9.931   stddev: 0.140  med: 9.891

patch ok
and if you want svn write access, and agree with our svn policy then
send diego username+password of your choice (and gpg encrypted if possible)

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Freedom in capitalist society always remains about the same as it was in
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