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Add a lock manager API to libavcodec.

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Allows an application to register a callback that manages mutexes
on behalf of FFmpeg.
With this callback registered FFmpeg is fully thread safe.

Originally committed as revision 19025 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Andreas Öman
2009-05-31 06:51:18 +00:00
parent b8df8d0d1c
commit f988ce6cad
3 changed files with 75 additions and 1 deletions
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doc/APIchanges
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@ -12,6 +12,14 @@ libavutil: 2009-03-08
API changes, most recent first:
2009-06-01 - r19025 - lavc 52.30.0 - av_lockmgr_register()
av_lockmgr_register() can be used to register a callback function
that lavc (and in the future, libraries that depend on lavc) can use
to implement mutexes. The application should provide a callback function
the implements the AV_LOCK_* operations described in avcodec.h.
When the lock manager is registered FFmpeg is guaranteed to behave
correct also in a multi-threaded application.
2009-04-30 - r18719 - lavc 52.28.0 - av_free_packet
av_free_packet() is no longer an inline function. It is now exported.