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authorReinhard Tartler <siretart@tauware.de>2010-02-09 20:28:42 +0000
committerReinhard Tartler <siretart@tauware.de>2010-02-09 20:28:42 +0000
commite5bea45df76a4888e37bc33f8cc803ec15d3ab7b (patch)
treed1827a645579e4bd7530569dab54971fa9116c04 /doc
parent9e3935dfd8c68608534206859b16239a652db37f (diff)
Add a lock manager API to libavcodec.
Allows an application to register a callback that manages mutexes on behalf of FFmpeg. With this callback registered FFmpeg is fully thread safe. backport r19025 by andoma NB: This is a feature backport with little regression potential. It was requested at FOSDEM 2010 by ben@geexbox.org for use by geexbox and the enna mediacenter in the upcoming debian/squeeze and ubuntu/lucid release. Approved by DonDiego on #ffmpeg-devel Originally committed as revision 21731 to svn://svn.ffmpeg.org/ffmpeg/branches/0.5
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diff --git a/doc/APIchanges b/doc/APIchanges
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+++ b/doc/APIchanges
@@ -1,3 +1,11 @@
+20090601 - 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.
+
20090301 - r17682 - lavf 52.31.0 - Generic metadata API
This version introduce a new metadata API (see av_metadata_get() and friends).
The old API is now deprecated and shouldn't be used anymore. This especially