libheif-js vendor copy for OnDevice
=====================================

This folder is a verbatim copy of the wasm build from the npm package
libheif-js@1.23.5 (LGPL-3.0). The site loads these files at runtime
from a Web Worker. They are not concatenated into the rest of the app.

Included files
--------------
- libheif.js   SHA-256 376c0bb483c23ac458cd22d718074693748ea75eddc3e4929353d4153e365a2e
- libheif.wasm SHA-256 184d3d20f8323877f13e9f5254f9c6a0ce272c9a3a2f823b0b2bcd2ee9f73f80
- LICENSE      LGPL-3.0 and related texts as shipped in libheif-wasm
- LICENSE-libheif-js-wrapper.txt  LGPL-3.0 text for the npm wrapper

Versions
--------
- npm package: libheif-js@1.23.5
  https://www.npmjs.com/package/libheif-js
  https://github.com/catdad-experiments/libheif-js
- The package keeps the major.minor version of upstream libheif.
  Corresponding source:
  - https://github.com/strukturag/libheif  (libheif, LGPL-3.0)
  - https://github.com/strukturag/libde265 (HEVC decoder, LGPL-3.0)
  - https://github.com/catdad-experiments/libheif-js

How this site loads the library
-------------------------------
/workers/heic-worker.js calls importScripts on /vendor/libheif-js/libheif.js
and passes locateFile so that libheif.wasm is fetched from this same folder.

Required interface if you replace the files
-------------------------------------------
Keep the same file names, or update the worker and this document together.
A replacement build must provide:

- a global function libheif(options) (Emscripten factory) that accepts
  locateFile, onRuntimeInitialized, and onAbort
- new module.HeifDecoder()
- decoder.decode(Uint8Array) → list of images
- per image: get_width(), get_height(), display({data,width,height}, cb), free()
- optional: module.heif_context_free(handle) and decoder.decoder

You may modify the library for your own use and reverse-engineer it to debug
those modifications. Serving your own copies of these two files in this folder
is enough to replace the Linked Version on a saved copy of the site.

This file is generated by scripts/copy-vendor.mjs.