Hue/saturation controls, qtmultimedia viewfinder works

utility.h

@@ -18,9 +18,16 @@ struct device_data
   struct media_v2_link *links;
   size_t num_links;
 };
+
+enum {
+	CONTROL_HUE,
+	CONTROL_SATURATION
+};
+
 void gst_pinesrcbin_configure_device(GstPineSrcBin * self, const char *conf_name);
 void gst_pinesrcbin_get_gst_caps_data(const char * conf_name,
 		int *width, int * height, const char **format,
 		struct v4l2_fract *interval);
+void set_camera_control(const char * conf_name, int control, int value);
 
 #endif