 tsd-typography">
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						<p><a href="devicecontrollerfacade.html">DeviceControllerFacade</a> keeps track of the devices being used for audio input
							(e.g. microphone), video input (e.g. camera), audio output (e.g. speakers).
							The list functions return MediaDeviceInfo objects. Once any list function is
							called, changes in device availability are broadcast to any registered
						<a href="devicechangeobserver.html">DeviceChangeObserver</a>.</p>
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					<p>Calli