import { Observable } from 'rxjs';
import { ImgExifService } from './img-exif.service';
import * as i0 from "@angular/core";
export interface ResizeCanvasOptions {
    quality?: number;
    alpha?: boolean;
    unsharpAmount?: number;
    unsharpRadius?: number;
    unsharpThreshold?: number;
}
export interface ResizeBufferOptions {
    src: Uint8Array;
    width: number;
    height: number;
    toWidth: number;
    toHeight: number;
    quality?: number;
    alpha?: boolean;
    unsharpAmount?: number;
    unsharpRadius?: number;
    unsharpThreshold?: number;
}
export declare class Ng2PicaService {
    private imageExifService;
    constructor(imageExifService: ImgExifService);
    resize(files: File[], width: number, height: number, keepAspectRatio?: boolean): Observable<any>;
    resizeCanvas(from: HTMLCanvasElement, to: HTMLCanvasElement, options: ResizeCanvasOptions): Promise<HTMLCanvasElement>;
    resizeBuffer(options: ResizeBufferOptions): Promise<Uint8Array>;
    private resizeFile;
    private isImgUsingAlpha;
    private generateResultFile;
    private blobToFile;
    static ɵfac: i0.ɵɵFactoryDeclaration<Ng2PicaService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<Ng2PicaService>;
}