The camera and microphone. The preview owns it from here, and disposes it with itself.
What starts, and how the microphone is metered.
The preview now.
The preview, now and on every change. Completes on Dispose.
Stops the camera and the microphone, closes the meter, disposes the controller, and completes State$.
ReadonlyReadThe microphone's level now, 0 to 1; 0 while it is off or cannot be metered. Pass it to a meter as its reader.
Picks a device. A live kind moves to it at once; a kind that is off starts on it later. Speakers are ignored.
Turns the camera on or off.
Turns the microphone on or off.
Starts the kinds the user starts with, then lists the devices (their names appear once access is allowed).
The user's camera and microphone in a lobby: see the file header.