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authorBen Avison <bavison@riscosopen.org>2014-03-20 18:58:38 +0000
committerMartin Storsjö <martin@martin.st>2014-03-26 19:54:12 +0200
commitfcf5fc444522d24caa9907225802817ae788f511 (patch)
tree52e963748ed754a57144eb3dfc8080278da6ef7c /libavformat/log2_tab.c
parent483321fe789566dcb27b6387c00ea16dd86bc587 (diff)
downloadffmpeg-fcf5fc444522d24caa9907225802817ae788f511.tar.gz
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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