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mirror of https://github.com/FFmpeg/FFmpeg.git synced 2025-03-03 14:32:16 +02:00
Christophe Gisquet 11b4703813 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>
2014-06-04 13:12:48 +02:00
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2014-06-04 13:12:48 +02:00
2014-06-03 10:58:19 -08:00
2014-06-03 10:58:19 -08:00
2014-06-03 10:58:19 -08:00
2014-06-03 10:58:19 -08:00
2014-05-06 14:14:32 +02:00
2014-06-03 10:58:19 -08:00
2014-05-28 03:52:50 +02:00
2014-05-28 03:52:50 +02:00
2014-06-03 10:58:19 -08:00
2014-05-23 23:30:21 +02:00
2014-05-21 15:59:22 +02:00
2014-05-28 22:38:38 +02:00
2014-05-28 22:38:28 +02:00
2014-05-28 22:38:11 +02:00
2014-03-13 08:24:11 -04:00

FFmpeg README

  1. Documentation

  1. Licensing

  • See the LICENSE file.
  1. Build and Install

  • See the INSTALL file.
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