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avutil: Add functions for allocating opaque contexts for algorithms

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The current API where the plain size is exposed is not of much
use - in most cases it is allocated dynamically anyway.

If allocated e.g. on the stack via an uint8_t array, there's no
guarantee that the struct's members are aligned properly (unless
the array is overallocated and the opaque pointer within it
manually aligned to some unspecified alignment).

Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Martin Storsjö 2012-10-11 15:08:04 +03:00
parent fb32f31af7
commit 9a92aea27b
10 changed files with 78 additions and 5 deletions
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@ -13,6 +13,10 @@ libavutil: 2011-04-18
API changes, most recent first:
2012-10-xx - xxxxxxx - lavu 51.43.0 - aes.h, md5.h, sha.h, tree.h
Add functions for allocating the opaque contexts for the algorithms,
deprecate the context size variables.
2012-10-xx - xxxxxxx - lavf 54.18.0 - avio.h
Add avio_closep to complement avio_close.