From 6baf4afa9969eea23cd4ec9b0cec3b7aed1f49af Mon Sep 17 00:00:00 2001
From: Stefano Sabatini <stefano.sabatini-lala@poste.it>
Date: Sat, 15 Jan 2011 17:21:15 +0000
Subject: [PATCH] Make avfilter_unref_buffer() accept a NULL parameter.
Originally committed as revision 26373 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
libavfilter/avfilter.c | 2 ++
libavfilter/avfilter.h | 4 ++--
2 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/libavfilter/avfilter.c b/libavfilter/avfilter.c
index 6ecd4ce4c2..4fbb6bf4a6 100644
--- a/libavfilter/avfilter.c
+++ b/libavfilter/avfilter.c
@@ -70,6 +70,8 @@ AVFilterBufferRef *avfilter_ref_buffer(AVFilterBufferRef *ref, int pmask)
void avfilter_unref_buffer(AVFilterBufferRef *ref)
{
+ if (!ref)
+ return;
if (!(--ref->buf->refcount))
ref->buf->free(ref->buf);
av_free(ref->video);
diff --git a/libavfilter/avfilter.h b/libavfilter/avfilter.h
index a3c51e0b49..5b08941693 100644
--- a/libavfilter/avfilter.h
+++ b/libavfilter/avfilter.h
@@ -28,7 +28,7 @@
#define LIBAVFILTER_VERSION_MAJOR 1
#define LIBAVFILTER_VERSION_MINOR 73
-#define LIBAVFILTER_VERSION_MICRO 1
+#define LIBAVFILTER_VERSION_MICRO 2
#define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \
LIBAVFILTER_VERSION_MINOR, \
@@ -177,7 +177,7 @@ AVFilterBufferRef *avfilter_ref_buffer(AVFilterBufferRef *ref, int pmask);
* Remove a reference to a buffer. If this is the last reference to the
* buffer, the buffer itself is also automatically freed.
*
- * @param ref reference to the buffer
+ * @param ref reference to the buffer, may be NULL
*/
void avfilter_unref_buffer(AVFilterBufferRef *ref);