From 8114c101607843a86960bd3e0e9c40487dc2a961 Mon Sep 17 00:00:00 2001
From: Anton Khirnov <anton@khirnov.net>
Date: Wed, 13 Mar 2013 09:09:36 +0100
Subject: [PATCH] lavfi: add avfilter_get_class().

Useful for examining options, the same as the corresponding functions
for the other libs.
---
 libavfilter/avfilter.c | 5 +++++
 libavfilter/avfilter.h | 7 +++++++
 2 files changed, 12 insertions(+)

diff --git a/libavfilter/avfilter.c b/libavfilter/avfilter.c
index 2fe8dfbe5c..ccf4950c96 100644
--- a/libavfilter/avfilter.c
+++ b/libavfilter/avfilter.c
@@ -693,3 +693,8 @@ int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
 
     return filter_frame(link, out);
 }
+
+const AVClass *avfilter_get_class(void)
+{
+    return &avfilter_class;
+}
diff --git a/libavfilter/avfilter.h b/libavfilter/avfilter.h
index 28d3684b14..f0b79f5957 100644
--- a/libavfilter/avfilter.h
+++ b/libavfilter/avfilter.h
@@ -690,4 +690,11 @@ attribute_deprecated
 int avfilter_copy_buf_props(AVFrame *dst, const AVFilterBufferRef *src);
 #endif
 
+/**
+ * @return AVClass for AVFilterContext.
+ *
+ * @see av_opt_find().
+ */
+const AVClass *avfilter_get_class(void);
+
 #endif /* AVFILTER_AVFILTER_H */