From bc8c1cdc7bfe7b1fe56df812aabdac3de2555cec Mon Sep 17 00:00:00 2001
From: Anton Khirnov <anton@khirnov.net>
Date: Wed, 11 Apr 2012 08:31:10 +0200
Subject: lavfi doxy: add a page for lavfi.

---
 libavfilter/avfilter.h | 15 +++++++++++++++
 libavfilter/version.h  |  1 +
 libavutil/avutil.h     |  2 +-
 3 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/libavfilter/avfilter.h b/libavfilter/avfilter.h
index 51d0fb5148..9baf64e941 100644
--- a/libavfilter/avfilter.h
+++ b/libavfilter/avfilter.h
@@ -22,6 +22,17 @@
 #ifndef AVFILTER_AVFILTER_H
 #define AVFILTER_AVFILTER_H
 
+/**
+ * @file
+ * @ingroup lavfi
+ * Main libavfilter public API header
+ */
+
+/**
+ * @defgroup lavfi Libavfilter - graph-based frame editing library
+ * @{
+ */
+
 #include "libavutil/avutil.h"
 #include "libavutil/frame.h"
 #include "libavutil/log.h"
@@ -960,4 +971,8 @@ int avfilter_graph_parse2(AVFilterGraph *graph, const char *filters,
                           AVFilterInOut **inputs,
                           AVFilterInOut **outputs);
 
+/**
+ * @}
+ */
+
 #endif /* AVFILTER_AVFILTER_H */
diff --git a/libavfilter/version.h b/libavfilter/version.h
index e8dc87546f..c8e968996f 100644
--- a/libavfilter/version.h
+++ b/libavfilter/version.h
@@ -23,6 +23,7 @@
 
 /**
  * @file
+ * @ingroup lavfi
  * Libavfilter version macros
  */
 
diff --git a/libavutil/avutil.h b/libavutil/avutil.h
index 33f9bea723..5ed33a9777 100644
--- a/libavutil/avutil.h
+++ b/libavutil/avutil.h
@@ -35,7 +35,7 @@
  * provided by Libav.
  *
  * @li @ref libavc "libavcodec" encoding/decoding library
- * @li @subpage libavfilter graph based frame editing library
+ * @li @ref lavfi "libavfilter" graph-based frame editing library
  * @li @ref libavf "libavformat" I/O and muxing/demuxing library
  * @li @ref lavd "libavdevice" special devices muxing/demuxing library
  * @li @ref lavu "libavutil" common utility library
-- 
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