diff --git a/gralloc/gralloc_priv.h b/gralloc/gralloc_priv.h
index 9ef45f1..b41d43a 100644
--- a/gralloc/gralloc_priv.h
+++ b/gralloc/gralloc_priv.h
@@ -223,4 +223,11 @@
 
 enum { BUFFER_TYPE_UI = 0, BUFFER_TYPE_VIDEO };
 
+/* Flag to determine interlaced content
+ * Value maps to Flags presents in types.hal of QtiMapperextensions
+ */
+enum {
+  LAYOUT_INTERLACED_FLAG = 1 << 0,
+};
+
 #endif  // __GRALLOC_PRIV_H__