[FFmpeg-devel] [PATCH] use AV_RB16 in cabac refill

Michael Niedermayer michaelni
Thu Mar 25 12:46:33 CET 2010


On Thu, Mar 25, 2010 at 03:30:33AM -0400, Alexander Strange wrote:
> Measured 1 cycle faster decode_cabac_residual on x86-64. Didn't try anywhere else, but I'd be a little interested in what arm does.
> 

>  cabac.h |    4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> a69e6e3e8539b7442d07ab6721580a381a863c1c  0003-cabac-Use-AV_RB16-instead-of-two-byte-loads-in-refil.patch
> From 539b4c39981a32f4de2c0cbccc54bf540bda398f Mon Sep 17 00:00:00 2001
> From: Alexander Strange <astrange at ithinksw.com>
> Date: Wed, 17 Mar 2010 06:06:15 -0400
> Subject: [PATCH 3/4] cabac: Use AV_RB16 instead of two byte loads in refill
> 
> Less than 1 cycle faster.

if its not slower on arm then ok

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

I have never wished to cater to the crowd; for what I know they do not
approve, and what they approve I do not know. -- Epicurus
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