/// <reference types="node" />
import ExifReader from 'exifreader';
import { ImageRegion, RoleFilter, ShapeFilter, Vertex } from './ImageRegion';
export { ImageRegion, RoleFilter, ShapeFilter, Vertex };
/**
 * Size of an image in pixels.
 */
export interface Size {
    /**
     * Image width in pixels.
     */
    width: number;
    /**
     * Image height in pixels.
     */
    height: number;
}
/**
 * Parses the XMP metadata of an image, relevant for Image Display Control, i.e.
 * mostly the image regions, see
 * https://iptc.org/std/photometadata/specification/IPTC-PhotoMetadata#image-region
 */
export declare class Parser {
    /**
     * @param buffer The image file content.
     */
    constructor(buffer: Buffer | ArrayBuffer);
    /**
     * Returns XMP IDC metadata in a format similar to what this web-component
     * expects: https://github.com/Frameright/image-display-control-web-component
     *
     * @param shapeFilter Can be used to retrieve only regions of a specific
     *                    shape, e.g. 'rectangle'.
     * @param roleFilter Can be used to retrieve only regions of a specific kind
     *                   of role, e.g. 'crop'.
     * @param essentialOnly If true, only essential region properties will be
     *                      returned, e.g. properties like `types` and `roles`
     *                      will be skipped.
     */
    getIdcMetadata(shapeFilter?: ShapeFilter, roleFilter?: RoleFilter, essentialOnly?: boolean): ImageRegion[];
    /**
     * Dumps all XMP metadata.
     *
     * @return An instance of
     *         [ExifReader.XmpTags](https://github.com/mattiasw/ExifReader/blob/main/exif-reader.d.ts#L121)
     */
    getXmpMetadata(): ExifReader.XmpTags;
    /**
     * Returns the size of the image in pixels.
     *
     * @note Caches the result in `this._size` for future calls.
     */
    getSize(): Size;
    private static _xmpEntityOrConceptsToStringArray;
    private static _xmpEntityOrConceptToStringArray;
    private static _xmpAltOrBagToStringArray;
    private static _xmpStringToNumber;
    private _xmpRegionToImageRegion;
    private _buffer;
    private _xmpMetadata;
    private _size;
}