[FFmpeg-devel] [PATCH 5/6] x86: lossless audio: SSE4 madd 32bits

[Michael Niedermayer]

On Mon, Apr 18, 2016 at 03:07:30PM +0200, Christophe Gisquet wrote:
> The unique user so far is wmalossless 24bits. The few samples tested show an
> order of 8, so more unrolling or an avx2 version do not make sense.
> 
> Timings: 72 -> 49 cycles
> ---
>  libavcodec/x86/lossless_audiodsp.asm    | 38 +++++++++++++++++++++++++++++++++
>  libavcodec/x86/lossless_audiodsp_init.c |  7 ++++++
>  2 files changed, 45 insertions(+)

this breaks (only noise)
\[CCCP\]_Mega_Weird_Audio_Test.mkv track 23


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

The worst form of inequality is to try to make unequal things equal.
-- Aristotle
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