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| author | Ronald S. Bultje <rsbultje@gmail.com> | 2017-04-03 09:51:10 -0400 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-04-13 02:29:26 +0200 |
| commit | d1cae50a046763bf14d74e899d90e4ef0be5b551 (patch) | |
| tree | d7d81299edb3911a7629b192e9e238ec3406e214 /libavcodec/pngdec.c | |
| parent | b51217381dd748fd831ba9403cdcdc8277bd63d5 (diff) | |
| download | ffmpeg-d1cae50a046763bf14d74e899d90e4ef0be5b551.tar.gz | |
hevc: only write to max_ra and pocTid0 in the first slice.
Values from subsequent values are guaranteed to be identical (since
poc and nal_unit_type are checked to be the same between slices), so
this doesn't affect output in any way, but does resolve the remaining
reported race conditions (by tsan) in fate-hevc.
In practice, this fixes tsan warnings like this:
WARNING: ThreadSanitizer: data race (pid=25334)
Read of size 4 at 0x7d9c0001adcc by main thread (mutexes: write M1386):
#0 hevc_update_thread_context src/libavcodec/hevcdec.c:3310 (ffmpeg+0x000000b41c7c)
[..]
Previous write of size 4 at 0x7d9c0001adcc by thread T1 (mutexes: write M1383):
#0 hls_slice_header src/libavcodec/hevcdec.c:596 (ffmpeg+0x000000b43a22)
(cherry picked from commit 1f50baa2b2da7fdbfccf0662883f38a763ff6619)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec/pngdec.c')
0 files changed, 0 insertions, 0 deletions