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hwcontext: Improve allocation in derived contexts

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Use the flags argument of av_hwframe_ctx_create_derived() to pass the
mapping flags which will be used on allocation.  Also, set the format
and hardware context on the allocated frame automatically - the user
should not be required to do this themselves.

(cherry picked from commit c5714b51aa)
This commit is contained in:
Mark Thompson
2017-03-04 23:57:40 +00:00
parent a97fb14418
commit d59c6a3aeb
5 changed files with 26 additions and 3 deletions
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doc/APIchanges
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@@ -15,6 +15,10 @@ libavutil: 2015-08-28
API changes, most recent first:
2017-06-14 - xxxxxxx - lavu 55.66.100 - hwcontext.h
av_hwframe_ctx_create_derived() now takes some AV_HWFRAME_MAP_* combination
as its flags argument (which was previously unused).
2017-06-14 - xxxxxxx - lavc 57.99.100 - avcodec.h
Add AV_HWACCEL_FLAG_ALLOW_PROFILE_MISMATCH.