[FFmpeg-devel] what is h264_idct_add8()?

Michael Niedermayer michaelni
Sun Sep 12 14:26:06 CEST 2010

On Fri, Sep 10, 2010 at 09:48:53PM -0400, Ronald S. Bultje wrote:
> Hi Michael,
> On Mon, Sep 6, 2010 at 4:32 PM, Michael Niedermayer <michaelni at gmx.at> wrote:
> > On Mon, Sep 06, 2010 at 12:33:13PM -0400, Ronald S. Bultje wrote:
> > [...]
> >> Michael, do you still have the patch that enables using idct_add8()
> >> for chroma (probably in h264.c) so I can test it performance of
> >> yasmified idct_add8 against the current code that doesn't use
> >> idct_add8()?
> >
> > i tried a bit of find and grep but it seems iam not looking at the right
> > place or not searching for the right thing
> So what do you suggest we do?
> a) remove the idct_add8() functions from H264DSPContext
> b) leave as-is (because I can't test the my yasm conversion is correct)
> c) convert it to yasm along with the rest, hope that it is correct
> without testing (?)
> d) something else?
> (A) is easiest, but (C) may have some benefit if I decide to test the
> performance benefit in the future with the yasmified version. (B)
> means duplication of code and thus sounds like a bad plan...

iam against a, i dont care about the rest, mans suggestion is possible too but
seems much work

Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Rewriting code that is poorly written but fully understood is good.
Rewriting code that one doesnt understand is a sign that one is less smart
then the original author, trying to rewrite it will not make it better.
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