From: Robert Nagy <rona...@gmail.com>
Signed-off-by: Anton Khirnov <an...@khirnov.net>
---
Seems I failed to include this in my error checking patchset for lavfi.
That set depends on it.
---
doc/APIchanges | 3 +++
libavfilter/avfilter.h | 12 ++++++++++++
libavfilter/buffer.c | 6 ++++++
3 files changed, 21 insertions(+)
diff --git a/doc/APIchanges b/doc/APIchanges
index f936d5f..8770b6d 100644
--- a/doc/APIchanges
+++ b/doc/APIchanges
@@ -13,6 +13,9 @@ libavutil: 2011-04-18
API changes, most recent first:
+2012-07-xx - xxxxxxx - lavfi 3.0.0 - avfilter.h
+ Add avfilter_unref_bufferp().
+
2012-07-10 - 5fade8a - lavu 51.37.0
Add av_malloc_array() and av_mallocz_array()
diff --git a/libavfilter/avfilter.h b/libavfilter/avfilter.h
index 10d64ad..7fbdd8a 100644
--- a/libavfilter/avfilter.h
+++ b/libavfilter/avfilter.h
@@ -195,9 +195,21 @@ AVFilterBufferRef *avfilter_ref_buffer(AVFilterBufferRef
*ref, int pmask);
* buffer, the buffer itself is also automatically freed.
*
* @param ref reference to the buffer, may be NULL
+ *
+ * @note it is recommended to use avfilter_unref_bufferp() instead of this
+ * function
*/
void avfilter_unref_buffer(AVFilterBufferRef *ref);
+/**
+ * Remove a reference to a buffer and set the pointer to NULL.
+ * If this is the last reference to the buffer, the buffer itself
+ * is also automatically freed.
+ *
+ * @param ref pointer to the buffer reference
+ */
+void avfilter_unref_bufferp(AVFilterBufferRef **ref);
+
#if FF_API_AVFILTERPAD_PUBLIC
/**
* A filter pad used for either input or output.
diff --git a/libavfilter/buffer.c b/libavfilter/buffer.c
index be0da26..e3ebc9b 100644
--- a/libavfilter/buffer.c
+++ b/libavfilter/buffer.c
@@ -84,6 +84,12 @@ void avfilter_unref_buffer(AVFilterBufferRef *ref)
av_free(ref);
}
+void avfilter_unref_bufferp(AVFilterBufferRef **ref)
+{
+ avfilter_unref_buffer(*ref);
+ *ref = NULL;
+}
+
int avfilter_copy_frame_props(AVFilterBufferRef *dst, const AVFrame *src)
{
dst->pts = src->pts;
--
1.7.10
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