import { HMSPluginSupportResult, HMSVideoPlugin, HMSVideoPluginType } from '@100mslive/hms-video-store';
import '@tensorflow/tfjs-backend-webgl';
export declare class HMSVirtualBackgroundPlugin implements HMSVideoPlugin {
    background: string | HTMLImageElement;
    personMaskWidth: number;
    personMaskHeight: number;
    isVirtualBackground: boolean;
    backgroundImage: HTMLImageElement | null;
    backgroundVideo: HTMLVideoElement | null;
    backgroundType: string;
    loadModelCalled: boolean;
    blurValue: any;
    tfLite: any;
    tfLitePromise: any;
    modelName: string;
    input: HTMLCanvasElement | null;
    output: HTMLCanvasElement | null;
    outputCtx: CanvasRenderingContext2D | null;
    timerID: number;
    imageAspectRatio: number;
    personMaskPixelCount: number;
    personMask: ImageData;
    personMaskCanvas: HTMLCanvasElement;
    personMaskCtx: any;
    filters: any;
    enableSharpening?: boolean | false;
    gifFrames: any;
    gifFramesIndex: number;
    gifFrameImageData: any;
    tempGifCanvas: HTMLCanvasElement;
    tempGifContext: any;
    giflocalCount: number;
    constructor(background: string, enableSharpening?: boolean);
    init(): Promise<void>;
    isSupported(): boolean;
    checkSupport(): HMSPluginSupportResult;
    getName(): string;
    getPluginType(): HMSVideoPluginType;
    setBackground(path?: string | HTMLImageElement | HTMLVideoElement): Promise<void>;
    stop(): void;
    processVideoFrame(input: HTMLCanvasElement, output: HTMLCanvasElement, skipProcessing?: boolean): Promise<void> | void;
    private setImage;
    private setGiF;
    private log;
    private resizeInputData;
    private infer;
    private postProcessing;
    private sharpenFilter;
    private drawPersonMask;
    private drawSegmentedBackground;
    private runSegmentation;
    private fitVideoToBackground;
    private fitImageToBackground;
    private fitGifToBackground;
    private fitData;
    private addBlurToBackground;
    private initSharpenFilter;
}