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| author | Christophe Gisquet <christophe.gisquet@gmail.com> | 2014-06-03 16:38:36 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2014-06-04 13:12:48 +0200 |
| commit | 11b47038135442ec546dc348f2411e52e47549b8 (patch) | |
| tree | d87e3b4afcf50bcb3bc5191da6f3560fc51da09d /libavfilter/vf_mp.c | |
| parent | c7e54628e30acbe896f92c8b8d89ae63901834ff (diff) | |
| download | ffmpeg-11b47038135442ec546dc348f2411e52e47549b8.tar.gz | |
huffyuvdec: implement trick
When the joint table does not contain a valid entry, the decoding restarts
from scratch. By implementing the trick of jumping to the 2nd level of the
individual table (and inlining the whole), a speed improvement of 5-10%
is possible.
On a 1000-frames YUV4:2:0 video, before:
362851 decicycles in 422, 262094 runs, 50 skips
182488 decicycles in gray, 262087 runs, 57 skips
Object size: 23584
Overall time: 8.377
After:
346800 decicycles in 422, 262079 runs, 65 skips
168197 decicycles in gray, 262077 runs, 67 skips
Object size: 23188
Overall time: 7.878
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavfilter/vf_mp.c')
0 files changed, 0 insertions, 0 deletions