[FFmpeg-devel] [PATCH 0/6] sse2/avx functions for 8-bit simple idct

Michael Niedermayer michael at niedermayer.cc
Mon Jun 12 20:00:14 EEST 2017


On Mon, Jun 12, 2017 at 03:36:03PM +0200, James Darnley wrote:
> I think I have reached the final state for these patches.  There has been little
> change to the 1st, 3rd, 4th, and 5th.
> 
> The 2nd adds an option to explicitly control what the macro does after the IDCT.
> This allows the small optimisation for 8-bit of not storing the data back to the
> source block.
> 

> The 6th lets the IDCT use the slightly different coefficients to get exact
> output compared with the MMX original.  This is rather messy but I think it is
> slightly better than trying to alter the code macro.  A word diff looks much
> cleaner than the line diff git uses by default.

i see no changes in fate
is the changed code not tested in any fate test (in which case please
add one) but quite possibly i also misundestand as i didnt look at
what exactly is slihtly different

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

The bravest are surely those who have the clearest vision
of what is before them, glory and danger alike, and yet
notwithstanding go out to meet it. -- Thucydides
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