import type { VideoEffects } from '@vkontakte/calls-video-effects';
import EventEmitter from './EventEmitter';
export declare enum VideoEffectsFpsLimiterEvent {
    FpsLimit = "fps-limit"
}
export declare class VideoEffectsFpsLimiter extends EventEmitter {
    private readonly FPS_LIMITS;
    private readonly THRESHOLD;
    private readonly HISTORY_LENGTH;
    private _fpsMeterUnsubscribe;
    private readonly _fpsHistory;
    private _fpsLimitCursor;
    get fpsLimit(): number;
    watch(videoEffect: VideoEffects | null): void;
    private _handleFpsMeter;
    /** для совместимости со старыми версиями, где может не быть метода */
    private _assertsVideoEffect;
    addEventListener(event: VideoEffectsFpsLimiterEvent, fn: (fpsLimit: number) => void): {
        dispose: Function;
    };
    private _cleanup;
    destroy(): void;
}