From 2661ba4b094302ab65b6c25b044342be26eef787 Mon Sep 17 00:00:00 2001
From: Ivan Kalvachev <ikalvachev@gmail.com>
Date: Sat, 14 Feb 2009 20:07:52 +0000
Subject: [PATCH] Document that ff_draw_horiz_band() could be used as hwaccell
 callback.

Originally committed as revision 17277 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavcodec/avcodec.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index 41d3c0e..ee13baa 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -960,6 +960,9 @@ typedef struct AVCodecContext {
      * decoder to draw a horizontal band. It improves cache usage. Not
      * all codecs can do that. You must check the codec capabilities
      * beforehand.
+     * It is also used by hardware acceleration APIs as a callback
+     * to pass specific (partially decoded) data to the calling
+     * application so it could be passed to the rendering hardware.
      * - encoding: unused
      * - decoding: Set by user.
      * @param height the height of the slice
-- 
2.7.4