Changeset fcf5fc44 in ffmpeg

Timestamp:

Mar 26, 2014, 5:54:12 PM (11 years ago)

Author:

Martin Storsjö <martin@martin.st>

Branches:

master

Children:

179cf148, b9eb0341

Parents:

483321fe

git-author:

Ben Avison <bavison@riscosopen.org> (03/20/14 18:58:38)

git-committer:

Martin Storsjö <martin@martin.st> (03/26/14 17:54:12)

Message:

truehd: tune VLC decoding for ARM.

Profiling on a Raspberry Pi revealed the best performance to correspond
with VLC_BITS = 5. Results for overall audio decode and the get_vlc2 function
in particular are as follows:

Before After
Mean StdDev Mean StdDev Confidence Change

6:2 total 348.8 20.1 339.6 15.1 88.8% +2.7% (insignificant)
6:2 function 38.1 8.1 26.4 4.1 100.0% +44.5%
8:2 total 339.1 15.4 324.5 15.5 99.4% +4.5%
8:2 function 33.8 7.0 27.3 5.6 99.7% +23.6%
6:6 total 604.6 20.8 572.8 20.6 100.0% +5.6%
6:6 function 95.8 8.4 68.9 8.2 100.0% +39.1%
8:8 total 766.4 17.6 741.5 21.2 100.0% +3.4%
8:8 function 106.0 11.4 86.1 9.9 100.0% +23.1%

Signed-off-by: Martin Storsjö <​martin@martin.st>

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