[FFmpeg-cvslog] lavfi: fix doxygen doc for config_props() callback

[Mina Nagy Zaki]

ffmpeg | branch: master | Mina Nagy Zaki <mnzaki at gmail.com> | Thu Aug  4 15:47:01 2011 +0300| [3e12b5893d94f8cada7e8a040007a039c62f880d] | committer: Stefano Sabatini

lavfi: fix doxygen doc for config_props() callback

Update/extend documentation related to the link fields to set, and fix
a pads->filters braino.

Signed-off-by: Stefano Sabatini <stefano.sabatini-lala at poste.it>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=3e12b5893d94f8cada7e8a040007a039c62f880d
---

 libavfilter/avfilter.h |   11 +++++++----
 1 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/libavfilter/avfilter.h b/libavfilter/avfilter.h
index 66061b9..4c3192e 100644
--- a/libavfilter/avfilter.h
+++ b/libavfilter/avfilter.h
@@ -438,15 +438,18 @@ struct AVFilterPad {
     /**
      * Link configuration callback.
      *
-     * For output pads, this should set the link properties such as
-     * width/height. This should NOT set the format property - that is
-     * negotiated between filters by the filter system using the
+     * For output pads, this should set the following link properties:
+     * video: width, height, sample_aspect_ratio, time_base
+     * audio: sample_rate.
+     *
+     * This should NOT set properties such as format, channel_layout, etc which
+     * are negotiated between filters by the filter system using the
      * query_formats() callback before this function is called.
      *
      * For input pads, this should check the properties of the link, and update
      * the filter's internal state as necessary.
      *
-     * For both input and output filters, this should return zero on success,
+     * For both input and output pads, this should return zero on success,
      * and another value on error.
      */
     int (*config_props)(AVFilterLink *link);