import type { ImageRequireSource, ImageURISource } from 'react-native';
import { HMSVideoPlugin } from './HMSVideoPlugin';
export declare class HMSVirtualBackgroundPlugin extends HMSVideoPlugin {
    static NAME: string;
    constructor();
    /**
     * Sets Blur as background
     * @returns {Promise<boolean>} A promise that resolves to true when blur effect has been applied as background, otherwise, rejected promise is returned
     */
    setBlur(blurRadius: number): Promise<boolean>;
    /**
     * Sets provided image as background
     * @param backgroundImage An image to apply as background on
     * @returns {Promise<boolean>} A promise that resolves to true when provided background image has been applied as background, otherwise, rejected promise is returned
     *
     * Example Usage:
     * ```
     * // Create instance of `HMSVirtualBackgroundPlugin` class
     * const hmsVirtualBackgroundPlugin = HMSVirtualBackgroundPlugin();
     * ...
     * // In ON_PREVIEW or ON_JOIN event callback method
     * const image = require('path to image file');
     * hmsVirtualBackgroundPlugin.setBackground(image);
     *
     *
     * ```
     */
    setBackground(backgroundImage: ImageURISource | ImageRequireSource): Promise<boolean>;
}
//# sourceMappingURL=HMSVirtualBackgroundPlugin.d.ts.map