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lavfi: document the constraints on incoming frames.

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This commit is contained in:
Nicolas George
2012-07-29 18:58:42 +02:00
parent 8ef740ce01
commit 8d6eed7b56
1 changed files with 6 additions and 0 deletions
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6
libavfilter/avfilter.h
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@@ -260,6 +260,12 @@ struct AVFilterPad {
* NULL, the filter layer will default to storing a reference to the
* picture inside the link structure.
*
* The reference given as argument is also available in link->cur_buf.
* It can be stored elsewhere or given away, but then clearing
* link->cur_buf is advised, as it is automatically unreferenced.
* The reference must not be unreferenced before end_frame(), as it may
* still be in use by the automatic copy mechanism.
*
* Input video pads only.
*
* @return >= 0 on success, a negative AVERROR on error. picref will be