/** @format */
import { InputBuffer } from '../../common/input-buffer.js';
/**
 * Represents the header of a BMP file.
 */
export declare class BmpFileHeader {
    /**
     * Signature for BMP files: 'BM'
     */
    static readonly signature = 19778;
    private readonly _fileLength;
    /**
     * Gets the length of the file.
     */
    get fileLength(): number;
    private _imageOffset;
    /**
     * Sets the offset of the image data in the file.
     * @param {number} v - The offset value.
     */
    set imageOffset(v: number);
    /**
     * Gets the offset of the image data in the file.
     * @returns {number} The offset of the image data in the file.
     */
    get imageOffset(): number;
    /**
     * Constructs a BmpFileHeader instance from the given input buffer.
     * @param {InputBuffer<Uint8Array>} b - The input buffer containing the BMP file data.
     * @throws {LibError} If the buffer does not represent a valid BMP file.
     */
    constructor(b: InputBuffer<Uint8Array>);
    /**
     * Checks if the given input buffer represents a valid BMP file.
     * @param {InputBuffer<Uint8Array>} b - The input buffer to check.
     * @param {number} b.length - The length of the buffer.
     * @param {function(): number} b.readUint16 - Reads a 16-bit unsigned integer from the buffer.
     * @returns {boolean} True if the buffer is a valid BMP file, false otherwise.
     */
    static isValidFile(b: InputBuffer<Uint8Array>): boolean;
}