+ /** Emitted when a video frame is ready.
+ * First parameter is the video image.
+ * Second parameter is true if the image is the same as the last one that was emitted.
+ * Third parameter is the time.
+ */
+ boost::signals2::signal<void (boost::shared_ptr<const Image>, bool, Time)> Video;
+
+ /** Emitted when some audio data is ready */
+ boost::signals2::signal<void (boost::shared_ptr<const AudioBuffers>, Time)> Audio;
+