[FFmpeg-devel] [PATCH 3/5] truehd: add hand-scheduled ARM asm version of ff_mlp_rematrix_channel.

[Michael Niedermayer]

On Thu, Mar 20, 2014 at 06:59:16PM +0000, Ben Avison wrote:
> Profiling results for overall audio decode and the rematrix_channels function
> in particular are as follows:
> 
>               Before          After
>               Mean   StdDev   Mean   StdDev  Confidence  Change
> 6:2 total     370.8  17.0     348.8  20.1    99.9%       +6.3%
> 6:2 function  46.4   8.4      45.8   6.6     18.0%       +1.2%  (insignificant)
> 8:2 total     343.2  19.0     339.1  15.4    54.7%       +1.2%  (insignificant)
> 8:2 function  38.9   3.9      40.2   6.9     52.4%       -3.2%  (insignificant)
> 6:6 total     658.4  15.7     604.6  20.8    100.0%      +8.9%
> 6:6 function  109.0  8.7      59.5   5.4     100.0%      +83.3%
> 8:8 total     896.2  24.5     766.4  17.6    100.0%      +16.9%
> 8:8 function  223.4  12.8     93.8   5.0     100.0%      +138.3%
> 
> 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/mlpdsp_arm.S      |  222 ++++++++++++++++++++++++++++++++++++++
>  libavcodec/arm/mlpdsp_init_arm.c |   12 ++
>  2 files changed, 234 insertions(+), 0 deletions(-)

applied

thanks

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

Many things microsoft did are stupid, but not doing something just because
microsoft did it is even more stupid. If everything ms did were stupid they
would be bankrupt already.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 198 bytes
Desc: Digital signature
URL: <http://ffmpeg.org/pipermail/ffmpeg-devel/attachments/20140326/0b4c8bbc/attachment.asc>