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| author | Ronald S. Bultje <rsbultje@gmail.com> | 2016-10-14 13:01:27 -0400 |
|---|---|---|
| committer | Ronald S. Bultje <rsbultje@gmail.com> | 2016-10-24 16:02:39 -0400 |
| commit | be885da3427c5d9a6fa68229d16318afffe67193 (patch) | |
| tree | a3203f05788df88cf61f01e5008c43a9ebfffb78 /libavformat/movenc.c | |
| parent | 490c6bda0e35498a24936fd1524317aeebed026b (diff) | |
| download | ffmpeg-be885da3427c5d9a6fa68229d16318afffe67193.tar.gz | |
vp9: change order of operations in adapt_prob().
This is intended to workaround bug "665 Integer Divide Instruction May
Cause Unpredictable Behavior" on some early AMD CPUs, which causes a
div-by-zero in this codepath, such as reported in Mozilla bug #1293996.
Note that this isn't guaranteed to fix the bug, since a compiler is free
to reorder instructions that don't depend on each other. However, it
appears to fix the bug in Firefox, and a similar patch was applied to
libvpx also (see Chrome bug #599899).
Diffstat (limited to 'libavformat/movenc.c')
0 files changed, 0 insertions, 0 deletions