- safe_ptr<frame_producer_device> producer();\r
- safe_ptr<frame_mixer_device> mixer();\r
- safe_ptr<frame_consumer_device> consumer();\r
+ safe_ptr<stage> stage();\r
+ safe_ptr<mixer> mixer();\r
+ safe_ptr<output> output();\r
+\r
+ video_channel_context& context();\r