import type { Room } from 'livekit-client';
import type { ParticipantInfo } from './types';
export declare class MediaController {
    private room;
    private userRole;
    private canPublishMedia;
    private isScreenSharing;
    private currentVideoQuality;
    private currentAudioQuality;
    private selectedAudioInputId;
    private selectedAudioOutputId;
    private debug;
    constructor(debug?: boolean);
    setRoom(room: Room, userRole: 'teacher' | 'student', canPublishMedia: boolean): void;
    updatePublishPermission(canPublish: boolean): void;
    canPublishMediaStream(): boolean;
    toggleCamera(): Promise<boolean>;
    toggleMicrophone(): Promise<boolean>;
    enableVideo(enabled: boolean): Promise<boolean>;
    enableAudio(enabled: boolean): Promise<boolean>;
    startScreenShare(): Promise<boolean>;
    stopScreenShare(): Promise<void>;
    setVideoQuality(quality: string, isPresenter: boolean, forceApply?: boolean): Promise<void>;
    setAudioQuality(quality: string, isPresenter: boolean): Promise<void>;
    switchAudioInput(deviceId: string): Promise<void>;
    switchAudioOutput(deviceId: string): Promise<void>;
    getMediaDevices(): Promise<MediaDeviceInfo[]>;
    getMediaState(localParticipant: ParticipantInfo | null): {
        camera: boolean;
        microphone: boolean;
        screenShare: boolean;
        canPublish: boolean;
    };
    setMediaState(state: {
        camera?: boolean;
        microphone?: boolean;
        screenShare?: boolean;
    }): Promise<any>;
    getCurrentVideoQuality(): string;
    getCurrentAudioQuality(): string;
    getIsScreenSharing(): boolean;
    isScreenShareActive(): boolean;
}