[FFmpeg-devel] [PATCH]levc/hevc_cabac Optimise ff_hevc_hls_residual_coding (v2)

Ganesh Ajjanagadde gajjanag at mit.edu
Fri Jan 22 04:08:15 CET 2016


On Fri, Jan 22, 2016 at 8:09 AM, Michael Niedermayer
<michael at niedermayer.cc> wrote:
> On Thu, Jan 21, 2016 at 10:45:55AM +0000, John Cox wrote:
>> Hi
>>
>> v2 of my hevc residual patch
>>
>> I've fixed the fate regression
>> I've split it into more pieces
>> Now uses ff_clz
>> Some reformating of function headers
>>
>> The patches can also be found on
>> https://github.com/jc-kynesim/rpi-ffmpeg.git on branch
>> test/ff_hevc_cabac_4 from tag ff_hevc_cabac_4_base
>>
>> Note that I will be going on holiday from the end of Friday (UK time)
>> till the 1st Feb and will be unable to edit code or read this list
>> during that period.
>
> applied the first 3 patches
> one #endif was moved to another patch, one typo fixed
> and confirmed that clz is faster

You mean faster than the builtin (which ff_clz uses)? That sounds a
bit surprising, and worth investigating.

>
> thx
>
> [...]
> --
> Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
>
> If a bugfix only changes things apparently unrelated to the bug with no
> further explanation, that is a good sign that the bugfix is wrong.
>
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