[FFmpeg-devel] [PATCH 5/5] truehd: add hand-scheduled ARM asm version of ff_mlp_pack_output.

[Michael Niedermayer]

On Thu, Mar 20, 2014 at 06:59:18PM +0000, Ben Avison wrote:
> Profiling results for overall decode and the output_data function in
> particular are as follows:
> 
>               Before          After
>               Mean   StdDev   Mean   StdDev  Confidence  Change
> 6:2 total     339.6  15.1     329.3  16.0    95.8%       +3.1%  (insignificant)
> 6:2 function  24.6   6.0      9.9    3.1     100.0%      +148.5%
> 8:2 total     324.5  15.5     323.6  14.3    15.2%       +0.3%  (insignificant)
> 8:2 function  20.4   3.9      9.9    3.4     100.0%      +104.7%
> 6:6 total     572.8  20.6     539.9  24.2    100.0%      +6.1%
> 6:6 function  54.5   5.6      16.0   3.8     100.0%      +240.9%
> 8:8 total     741.5  21.2     702.5  18.5    100.0%      +5.6%
> 8:8 function  63.9   7.6      18.4   4.8     100.0%      +247.3%
> 
> The assembly version has also been tested with a fuzz tester to ensure that
> any combinations of inputs not exercised by my available test streams still
> generate mathematically identical results to the C version.
> ---
>  libavcodec/arm/Makefile          |    1 +
>  libavcodec/arm/mlpdsp_armv6.S    |  530 ++++++++++++++++++++++++++++++++++++++
>  libavcodec/arm/mlpdsp_init_arm.c |   96 +++++++
>  3 files changed, 627 insertions(+), 0 deletions(-)
>  create mode 100644 libavcodec/arm/mlpdsp_armv6.S

merged a variant of this

Thanks

[...]

-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

He who knows, does not speak. He who speaks, does not know. -- Lao Tsu
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