Open UltraHDR

TypeScript/JavaScript library for UltraHDR (ISO 21496-1) gain map support.

See the main README for full documentation.

Installation

npm install open-ultrahdr

Quick Start

import { isUltraHdr, extractSdrBase, setLocation } from 'open-ultrahdr';

// Set WASM file location
setLocation('/assets/wasm/');

// Check if image is UltraHDR
const buffer = await file.arrayBuffer();
if (await isUltraHdr(buffer)) {
    const sdrBuffer = await extractSdrBase(buffer);
    // Use sdrBuffer for display on non-HDR screens
}

License

Dual-licensed under Apache-2.0 OR MIT, matching upstream libultrahdr. See the project root LICENSE for details.