import { RendererFactory2 } from '@angular/core';
import { DOC_ORIENTATION } from './DOC_ORIENTATION';
export declare class NgxImageCompressService {
    private render;
    DOC_ORIENTATION: typeof DOC_ORIENTATION;
    constructor(rendererFactory: RendererFactory2);
    byteCount(image: any): number;
    /** Get the correct Orientation value from the EXIF tags in the specified file. */
    getOrientation(file: File): Promise<DOC_ORIENTATION>;
    uploadFile(): Promise<{
        image: string;
        orientation: DOC_ORIENTATION;
    }>;
    /**
     * Compresses the image to the specified ratio.
     * @param image A data URI containing the image data.
     * @param orientation The orientation, as returned by `NgxImageCompressService.getOrientation`
     * @param ratio The scaling ratio in %
     */
    compressFile(image: string, orientation: DOC_ORIENTATION, ratio?: number, quality?: number): Promise<string>;
    /**
     * Resizes the image to the specified maximum dimensions.
     * @param image A data URI containing the image data.
     * @param orientation The orientation, as returned by `NgxImageCompressService.getOrientation`
     */
    resizeFile(image: string, orientation: DOC_ORIENTATION, maxWidth: number, maxHeight: number, quality?: number): Promise<string>;
}