[FFmpeg-cvslog] avfilter: add documentation for needs_writable

[Vittorio Giovara]

ffmpeg | branch: master | Vittorio Giovara <vittorio.giovara at gmail.com> | Wed Dec 18 11:40:38 2013 +0100| [d44bd7fb27d4121512eae0ffce5e48bac25e82dc] | committer: Vittorio Giovara

avfilter: add documentation for needs_writable

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=d44bd7fb27d4121512eae0ffce5e48bac25e82dc
---

 libavfilter/avfilter.h |    6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/libavfilter/avfilter.h b/libavfilter/avfilter.h
index 9f14afd..1b42086 100644
--- a/libavfilter/avfilter.h
+++ b/libavfilter/avfilter.h
@@ -358,6 +358,12 @@ struct AVFilterPad {
      */
     int needs_fifo;
 
+    /**
+     * The filter expects writable frames from its input link,
+     * duplicating data buffers if needed.
+     *
+     * input pads only.
+     */
     int needs_writable;
 };
 #endif