import AudioVideoController from '../audiovideocontroller/AudioVideoController' ; import MediaStreamBroker from './MediaStreamBroker' ; /**
 * [[NoOpDeviceBroker]] rejects requests to acquire a [[MediaStream]].
 */ export default class NoOpMediaStreamBroker implements MediaStreamBroker { acquireAudioInputStream ( ) { return Promise . reject ( ) ; } acquireVideoInputStream ( ) { return Promise . reject ( ) ; } acquireDisplayInputStream ( _streamConstraints ) { return Promise . reject ( ) ; } releaseMediaStream ( _mediaStreamToRelease ) { } bindToAudioVideoController ( _audioVideoController ) { } }