/**
 * PDF/A-1b compliance utilities.
 *
 * Provides XMP metadata stream writing and OutputIntent creation for
 * PDF/A-1b (ISO 19005-1, Level B) conformance.
 *
 * **Limitations:**
 * - Type1 base fonts (Helvetica, Times-Roman, Courier, etc.) are NOT embedded.
 *   PDF/A-1b strictly requires all fonts to be embedded. Documents using only
 *   CIDFonts (embedded TrueType via `embedFont()`) are fully compliant.
 *   Documents using base Type1 fonts will pass structural validation but may
 *   fail strict PDF/A font-embedding checks.
 *
 * @see ISO 19005-1:2005 — Document management — Electronic document file
 *      format for long-term preservation — Part 1: Use of PDF 1.4 (PDF/A-1)
 */
import type { PdfWriter } from "./pdf-writer.js";
/**
 * Minimal sRGB ICC profile (v2.1.0).
 *
 * This is a valid ICC profile with the correct header structure, profile
 * signature, and a minimal tag table. It identifies the color space as RGB
 * with the sRGB rendering intent. The profile is intentionally minimal
 * (~128 bytes) — enough to satisfy PDF/A-1b OutputIntent requirements.
 *
 * Structure:
 * - 128-byte header (profile size, preferred CMM, version, device class,
 *   color space, PCS, creation date, signature, platform, flags, etc.)
 * - Tag table with 0 tags (profile is header-only for minimal compliance)
 *
 * @see ICC.1:2001-04 — File Format for Color Profiles (v2)
 */
export declare const sRGB_ICC_PROFILE: Uint8Array;
/**
 * Write a PDF/A-1b XMP metadata stream as an indirect object.
 *
 * The XMP packet contains:
 * - `dc:title` — document title
 * - `dc:creator` — document author
 * - `xmp:CreatorTool` — creating application
 * - `pdf:Producer` — PDF producer
 * - `pdfaid:part` — PDF/A part (1)
 * - `pdfaid:conformance` — PDF/A conformance level (B)
 *
 * @returns The object number of the XMP metadata stream.
 */
export declare function writePdfAMetadata(writer: PdfWriter, metadata: {
    title?: string;
    author?: string;
    subject?: string;
    creator?: string;
}): number;
/**
 * Write a PDF/A-1b OutputIntent with an embedded sRGB ICC profile.
 *
 * Creates two objects:
 * 1. The ICC profile stream
 * 2. The OutputIntent dictionary referencing the profile
 *
 * @returns The object number of the OutputIntent dictionary.
 */
export declare function writePdfAOutputIntent(writer: PdfWriter): number;