import { ParticipantId } from '../types/Participant';
import { StatFirstMediaReceived } from './stat/StatFirstMediaReceived';
/**
 * Единый AudioOutput поддерживающий p2p, audioMix и transparent-audio
 */
export default class AudioOutput {
    protected _audioElement: HTMLAudioElement | null;
    private _audioTracks;
    private readonly _allowMultipleTracks;
    private _volume;
    private readonly _features;
    private readonly _statFirstMediaReceived;
    constructor(statFirstMediaReceived: StatFirstMediaReceived, allowMultipleTracks?: boolean);
    add(participantId: ParticipantId, track: MediaStreamTrack): void;
    remove(participantId: ParticipantId, track: MediaStreamTrack): void;
    get volume(): number;
    set volume(volume: number);
    destroy(): void;
    /** изменяем устройство для воспроизведения аудио */
    changeOutput(): Promise<void>;
    protected _getTracks(): MediaStreamTrack[];
    protected _initAudioElement(): void;
    protected _stopAudioElement(): void;
    private _addTrackToAudioElement;
    private _removeTrackFromAudioElement;
    private _clearTracks;
}