import { ParticipantId } from '../types/Participant';
import EventEmitter from './EventEmitter';
import { Transport, TransportTopology } from './transport/Transport';
import { VolumeLevel } from './VolumeDetector';
import { VolumesDetector } from './VolumesDetector';
export declare const enum SpeakerDetectorEvent {
    SPEAKER_CHANGED = "SPEAKER_CHANGED"
}
export declare class SpeakerDetector extends EventEmitter {
    private _speakerId;
    private _serverSideSpeakerDetection;
    constructor(volumesDetector: VolumesDetector, transport: Transport, topology: TransportTopology);
    destroy(): void;
    _onVolumesDetected(volumes: {
        [key: string]: VolumeLevel;
    }): void;
    _onServerSpeakerChanged(speakerId: ParticipantId): void;
    private _onTopologyChanged;
}