gstobject: deprecate gst_object_{set|get}_name_prefix()

The name prefix stuff has never been used for anything and it doesn't
look like we'll ever want to use it for anything.

Fixes #621006.

gst/gstobject.c

@@ -726,7 +726,14 @@ gst_object_get_name (GstObject * object)
  * retains ownership of the name prefix it sent.
  *
  * MT safe.  This function grabs and releases @object's LOCK.
+ *
+ * Deprecated: deprecated because the name prefix has never actually been used
+ *     for anything.
  */
+#ifndef GST_REMOVE_DEPRECATED
+#ifdef GST_DISABLE_DEPRECATED
+void gst_object_set_name_prefix (GstObject * object, const gchar * name_prefix);
+#endif
 void
 gst_object_set_name_prefix (GstObject * object, const gchar * name_prefix)
 {
@@ -737,6 +744,7 @@ gst_object_set_name_prefix (GstObject * object, const gchar * name_prefix)
   object->name_prefix = g_strdup (name_prefix); /* NULL gives NULL */
   GST_OBJECT_UNLOCK (object);
 }
+#endif /* GST_REMOVE_DEPRECATED */
 
 /**
  * gst_object_get_name_prefix:
@@ -750,7 +758,14 @@ gst_object_set_name_prefix (GstObject * object, const gchar * name_prefix)
  * Returns: the name prefix of @object. g_free() after usage.
  *
  * MT safe. This function grabs and releases @object's LOCK.
+ *
+ * Deprecated: deprecated because the name prefix has never actually been used
+ *     for anything.
  */
+#ifndef GST_REMOVE_DEPRECATED
+#ifdef GST_DISABLE_DEPRECATED
+gchar *gst_object_get_name_prefix (GstObject * object);
+#endif
 gchar *
 gst_object_get_name_prefix (GstObject * object)
 {
@@ -764,6 +779,7 @@ gst_object_get_name_prefix (GstObject * object)
 
   return result;
 }
+#endif /* GST_REMOVE_DEPRECATED */
 
 /**
  * gst_object_set_parent:

gst/gstobject.h

@@ -186,7 +186,7 @@ typedef struct _GstObjectClass GstObjectClass;
  * @refcount: unused
  * @lock: object LOCK
  * @name: The name of the object
- * @name_prefix: used for debugging
+ * @name_prefix: unused
  * @parent: this object's parent, weak ref
  * @flags: use GST_OBJECT_IS_XXX macros to access the flags
  *
@@ -196,12 +196,12 @@ struct _GstObject {
   GObject 	 object;
 
   /*< public >*/
-  gint           refcount;
+  gint           refcount;    /* unused (FIXME 0.11: remove) */
 
   /*< public >*/ /* with LOCK */
   GMutex        *lock;        /* object LOCK */
   gchar         *name;        /* object name */
-  gchar         *name_prefix; /* used for debugging */
+  gchar         *name_prefix; /* (un)used for debugging (FIXME 0.11: remove) */
   GstObject     *parent;      /* this object's parent, weak ref */
   guint32        flags;
 
@@ -285,8 +285,11 @@ GType		gst_object_get_type		(void);
 /* name routines */
 gboolean	gst_object_set_name		(GstObject *object, const gchar *name);
 gchar*		gst_object_get_name		(GstObject *object);
+
+#ifndef GST_DISABLE_DEPRECATED
 void		gst_object_set_name_prefix	(GstObject *object, const gchar *name_prefix);
 gchar*		gst_object_get_name_prefix	(GstObject *object);
+#endif
 
 /* parentage routines */
 gboolean	gst_object_set_parent		(GstObject *object, GstObject *parent);