diff -r 9b2c3c7a1a9c -r 567bb019e3e3 gstreamer_core/gst/gstparamspecs.h
--- a/gstreamer_core/gst/gstparamspecs.h	Wed Mar 31 22:03:18 2010 +0300
+++ b/gstreamer_core/gst/gstparamspecs.h	Tue Aug 31 15:30:33 2010 +0300
@@ -24,6 +24,56 @@
 
 G_BEGIN_DECLS
 
+/* --- paramspec flags */
+
+/**
+ * GST_PARAM_CONTROLLABLE:
+ *
+ * Use this flag on GObject properties to signal they can make sense to be.
+ * controlled over time. This hint is used by the GstController.
+ */
+#define	GST_PARAM_CONTROLLABLE	(1 << (G_PARAM_USER_SHIFT + 1))
+
+/**
+ * GST_PARAM_MUTABLE_READY:
+ *
+ * Use this flag on GObject properties of GstElements to indicate that
+ * they can be changed when the element is in the READY or lower state.
+ *
+ * Since: 0.10.23
+ */
+#define GST_PARAM_MUTABLE_READY  (1 << (G_PARAM_USER_SHIFT + 2))
+
+/**
+ * GST_PARAM_MUTABLE_PAUSED:
+ *
+ * Use this flag on GObject properties of GstElements to indicate that
+ * they can be changed when the element is in the PAUSED or lower state.
+ * This flag implies GST_PARAM_MUTABLE_READY.
+ *
+ * Since: 0.10.23
+ */
+#define GST_PARAM_MUTABLE_PAUSED  (1 << (G_PARAM_USER_SHIFT + 3))
+
+/**
+ * GST_PARAM_MUTABLE_PLAYING:
+ *
+ * Use this flag on GObject properties of GstElements to indicate that
+ * they can be changed when the element is in the PLAYING or lower state.
+ * This flag implies GST_PARAM_MUTABLE_PAUSED.
+ *
+ * Since: 0.10.23
+ */
+#define GST_PARAM_MUTABLE_PLAYING  (1 << (G_PARAM_USER_SHIFT + 4))
+
+/**
+ * GST_PARAM_USER_SHIFT:
+ *
+ * Bits based on GST_PARAM_USER_SHIFT can be used by 3rd party applications.
+ */
+#define	GST_PARAM_USER_SHIFT	(1 << (G_PARAM_USER_SHIFT + 8))
+
+
 /* --- type macros --- */
 
 #define GST_TYPE_PARAM_FRACTION           (gst_param_spec_fraction_get_type ())