deinterlace: use separate buffer metadata for fields

Call gst_buffer_make_metadata_writable() on buffers that are
duplicated into fields.  Fixes #627689.

diff --git a/gst/deinterlace/gstdeinterlace.c b/gst/deinterlace/gstdeinterlace.c
index 6d2a470..7c1ffc4 100644 (file)
--- a/gst/deinterlace/gstdeinterlace.c
+++ b/gst/deinterlace/gstdeinterlace.c
@@ -805,15 +805,15 @@ gst_deinterlace_push_history (GstDeinterlace * self, GstBuffer * buffer)
 
   if (field_layout == GST_DEINTERLACE_LAYOUT_TFF) {
     GST_DEBUG_OBJECT (self, "Top field first");
-    field1 = gst_buffer_ref (buffer);
+    field1 = gst_buffer_make_metadata_writable (gst_buffer_ref (buffer));
     field1_flags = PICTURE_INTERLACED_TOP;
-    field2 = gst_buffer_ref (buffer);
+    field2 = gst_buffer_make_metadata_writable (gst_buffer_ref (buffer));
     field2_flags = PICTURE_INTERLACED_BOTTOM;
   } else {
     GST_DEBUG_OBJECT (self, "Bottom field first");
-    field1 = gst_buffer_ref (buffer);
+    field1 = gst_buffer_make_metadata_writable (gst_buffer_ref (buffer));
     field1_flags = PICTURE_INTERLACED_BOTTOM;
-    field2 = gst_buffer_ref (buffer);
+    field2 = gst_buffer_make_metadata_writable (gst_buffer_ref (buffer));
     field2_flags = PICTURE_INTERLACED_TOP;
   }