From 38e15df1489d86c016515223ee693e7d0326c56a Mon Sep 17 00:00:00 2001
From: Anton Khirnov <anton@khirnov.net>
Date: Fri, 27 Sep 2013 16:49:05 +0200
Subject: [PATCH] avframe: note that linesize is not the usable data size

---
 libavutil/frame.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libavutil/frame.h b/libavutil/frame.h
index d71948db09..b0676e7f58 100644
--- a/libavutil/frame.h
+++ b/libavutil/frame.h
@@ -84,6 +84,9 @@ typedef struct AVFrame {
      *
      * For audio, only linesize[0] may be set. For planar audio, each channel
      * plane must be the same size.
+     *
+     * @note The linesize may be larger than the size of usable data -- there
+     * may be extra padding present for performance reasons.
      */
     int linesize[AV_NUM_DATA_POINTERS];