scenechange: fix crash on startup

gst_video_frame_map() was using the oldinfo GstVideoInfo
before it's been populated, resulting in a crash right
at the start.

https://bugzilla.gnome.org/show_bug.cgi?id=734763

diff --git a/gst/videofilters/gstscenechange.c b/gst/videofilters/gstscenechange.c
index d5d7fb4..7abfc8b 100644 (file)
--- a/gst/videofilters/gstscenechange.c
+++ b/gst/videofilters/gstscenechange.c
@@ -184,6 +184,7 @@ gst_scene_change_transform_frame_ip (GstVideoFilter * filter,
     scenechange->n_diffs = 0;
     memset (scenechange->diffs, 0, sizeof (double) * SC_N_DIFFS);
     scenechange->oldbuf = gst_buffer_ref (frame->buffer);
+    memcpy (&scenechange->oldinfo, &frame->info, sizeof (GstVideoInfo));
     return GST_FLOW_OK;
   }