+/** \defgroup vout_changes Flags for changes
+ * These flags are set in the vout_thread_t::i_changes field when another
+ * thread changed a variable
+ * @{
+ */
+/** cropping parameters changed */
+#define VOUT_CROP_CHANGE 0x1000
+/** aspect ratio changed */
+#define VOUT_ASPECT_CHANGE 0x2000
+/**@}*/
+
+/* TODO to move them to vlc_vout.h */
+void vout_ControlChangeFullscreen(vout_thread_t *, bool fullscreen);
+void vout_ControlChangeOnTop(vout_thread_t *, bool is_on_top);
+void vout_ControlChangeDisplayFilled(vout_thread_t *, bool is_filled);
+void vout_ControlChangeZoom(vout_thread_t *, int num, int den);
+