+ * was updated.
+ * @GST_MESSAGE_RESET_TIME: Message to request resetting the pipeline's
+ * running time from the pipeline. This is an internal message which
+ * applications will likely never receive.
+ * @GST_MESSAGE_STREAM_START: Message indicating start of a new stream. Useful
+ * e.g. when using playbin in gapless playback mode, to get notified when
+ * the next title actually starts playing (which will be some time after
+ * the URI for the next title has been set).
+ * @GST_MESSAGE_NEED_CONTEXT: Message indicating that an element wants a specific context (Since 1.2)
+ * @GST_MESSAGE_HAVE_CONTEXT: Message indicating that an element created a context (Since 1.2)
+ * @GST_MESSAGE_EXTENDED: Message is an extended message type (see below).
+ * These extended message IDs can't be used directly with mask-based API
+ * like gst_bus_poll() or gst_bus_timed_pop_filtered(), but you can still
+ * filter for GST_MESSAGE_EXTENDED and then check the result for the
+ * specific type. (Since 1.4)
+ * @GST_MESSAGE_DEVICE_ADDED: Message indicating a #GstDevice was added to
+ * a #GstDeviceMonitor (Since 1.4)
+ * @GST_MESSAGE_DEVICE_REMOVED: Message indicating a #GstDevice was removed
+ * from a #GstDeviceMonitor (Since 1.4)