From 0fba95a7b1fa96a71a5f472d06a53832fc6be141 Mon Sep 17 00:00:00 2001
From: Mark Nauwelaerts <mark.nauwelaerts@collabora.co.uk>
Date: Fri, 29 Jun 2012 18:54:51 +0200
Subject: [PATCH] videooverlaycomposition: fix some refcounting and avoid
 possible NULL use

---
 gst-libs/gst/video/video-overlay-composition.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/gst-libs/gst/video/video-overlay-composition.c b/gst-libs/gst/video/video-overlay-composition.c
index 8c941f0ed3..d614ba045f 100644
--- a/gst-libs/gst/video/video-overlay-composition.c
+++ b/gst-libs/gst/video/video-overlay-composition.c
@@ -328,7 +328,9 @@ gst_video_buffer_set_overlay_composition (GstBuffer * buf,
     ometa = (GstVideoOverlayCompositionMeta *)
         gst_buffer_add_meta (buf, GST_VIDEO_OVERLAY_COMPOSITION_META_INFO,
         NULL);
-    ometa->overlay = comp;
+    /* buffer might not be writable or so */
+    if (ometa)
+      ometa->overlay = gst_video_overlay_composition_ref (comp);
   }
 }