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avcodec: deprecate thread_safe_callbacks

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They add considerable complexity to frame-threading implementation,
which includes an unavoidably leaking error path, while the advantages
of this option to the users are highly dubious.

It should be always possible and desirable for the callers to make their
get_buffer2() implementation thread-safe, so deprecate this option.
This commit is contained in:
Anton Khirnov
2020-05-22 15:59:46 +02:00
parent 551ca67afe
commit a83098ab03
8 changed files with 102 additions and 11 deletions
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doc/APIchanges
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@@ -15,6 +15,11 @@ libavutil: 2017-10-21
API changes, most recent first:
2020-xx-xx - xxxxxxxxxx - lavc 58.114.100 - avcodec.h
Deprecate AVCodecContext.thread_safe_callbacks. Starting with
LIBAVCODEC_VERSION_MAJOR=60, user callbacks must always be
thread-safe when frame threading is used.
2020-11-25 - xxxxxxxxxx - lavc 58.113.100 - avcodec.h
Adds a new flag AV_CODEC_EXPORT_DATA_FILM_GRAIN for export_side_data.