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lavf/avio: clarify the buffer parameter of avio_alloc_context

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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Yu Xiaolei 2014-11-25 16:35:29 +08:00 committed by Michael Niedermayer
parent 2f1de5ca13
commit bc3d02fa88
1 changed files with 3 additions and 0 deletions
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libavformat/avio.h
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@ -186,6 +186,9 @@ int avio_check(const char *url, int flags);
*
* @param buffer Memory block for input/output operations via AVIOContext.
* The buffer must be allocated with av_malloc() and friends.
* It may be freed and replaced with a new buffer by libavformat.
* AVIOContext.buffer holds the buffer currently in use,
* which must be later freed with av_free().
* @param buffer_size The buffer size is very important for performance.
* For protocols with fixed blocksize it should be set to this blocksize.
* For others a typical size is a cache page, e.g. 4kb.