ges: Add a ges_is_initialized function

docs/libs/ges-sections.txt

@@ -4,6 +4,7 @@
 <FILE>ges-common</FILE>
 <TITLE>Initialization</TITLE>
 ges_init
+ges_is_initialized
 ges_init_check
 ges_deinit
 ges_version

ges/ges.c

@@ -321,3 +321,17 @@ ges_init_check (int *argc, char **argv[], GError ** err)
 
   return ges_init ();
 }
+
+/**
+ * ges_is_initialized:
+ *
+ * Use this function to check if GES has been initialized with ges_init()
+ * or ges_init_check().
+ *
+ * Returns: %TRUE if initialization has been done, %FALSE otherwise.
+ */
+gboolean
+ges_is_initialized (void)
+{
+  return ges_initialized;
+}

ges/ges.h

@@ -89,18 +89,27 @@ G_BEGIN_DECLS
 
 GES_API
 gboolean ges_init                            (void);
+
 GES_API
 gboolean ges_init_check                      (int *argc, char **argv[], GError ** err);
+
 GES_API
 void     ges_deinit                          (void);
+
 GES_API
-void     ges_version      (guint * major, guint * minor, guint * micro,
+void     ges_version                         (guint * major,
+                                              guint * minor,
+                                              guint * micro,
                                               guint * nano);
 GES_API GOptionGroup *
 ges_init_get_option_group                    (void);
+
 GES_API
 gboolean ges_validate_register_action_types  (void);
 
+GES_API
+gboolean ges_is_initialized                  (void);
+
 G_END_DECLS
 
 #endif /* __GES_H__ */