--- a/gst_plugins_base/gst-libs/gst/interfaces/colorbalance.h	Wed Mar 31 22:03:18 2010 +0300
+++ b/gst_plugins_base/gst-libs/gst/interfaces/colorbalance.h	Tue Aug 31 15:30:33 2010 +0300
@@ -46,14 +46,27 @@
 #define GST_COLOR_BALANCE_TYPE(klass) (klass->balance_type)
 
 typedef struct _GstColorBalance GstColorBalance;
+typedef struct _GstColorBalanceClass GstColorBalanceClass;
   
+/**
+ * GstColorBalanceType:
+ * @GST_COLOR_BALANCE_HARDWARE: Color balance is implemented with dedicated
+ *         hardware.
+ * @GST_COLOR_BALANCE_SOFTWARE: Color balance is implemented via software
+ *         processing.
+ * 
+ * An enumeration indicating whether an element implements color balancing
+ * operations in software or in dedicated hardware. In general, dedicated
+ * hardware implementations (such as those provided by xvimagesink) are
+ * preferred.
+ */
 typedef enum
 {
   GST_COLOR_BALANCE_HARDWARE,
   GST_COLOR_BALANCE_SOFTWARE
 } GstColorBalanceType;
 
-typedef struct _GstColorBalanceClass {
+struct _GstColorBalanceClass {
   GTypeInterface klass;
 
   GstColorBalanceType balance_type;
@@ -73,7 +86,7 @@
                           gint                    value);
 
   gpointer _gst_reserved[GST_PADDING];
-} GstColorBalanceClass;
+};
 #ifdef __SYMBIAN32__
 IMPORT_C
 #endif
@@ -101,6 +114,12 @@
 
 gint    gst_color_balance_get_value     (GstColorBalance        *balance,
                                          GstColorBalanceChannel *channel);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+GstColorBalanceType
+        gst_color_balance_get_balance_type (GstColorBalance        *balance);
 
 /* trigger signal */
 #ifdef __SYMBIAN32__