FrameReady HEIC/HEIF decoder: source code and license
=========================================================

The files in this folder (libheif.js, libheif.wasm) are the unmodified WebAssembly build of
libheif-js 1.23.5, which contains:
  - libheif 1.23.5 (HEIF/HEIC container decoder), LGPL-3.0
  - libde265 1.0.15 (HEVC/H.265 image decoder), LGPL-3.0

These libraries are free software under the GNU Lesser General Public License, version 3
(LGPL-3.0), which incorporates the GNU General Public License, version 3. The full texts of both
are in LICENSE.txt in this folder, and at https://www.gnu.org/licenses/lgpl-3.0.html and
https://www.gnu.org/licenses/gpl-3.0.html. They come with NO WARRANTY; see the licenses.

Corresponding source for exactly these versions
-----------------------------------------------
  - libheif 1.23.5: https://github.com/strukturag/libheif/releases/tag/v1.23.5
    (source archive: https://github.com/strukturag/libheif/archive/refs/tags/v1.23.5.tar.gz)
  - libde265 1.0.15: https://github.com/strukturag/libde265/releases/tag/v1.0.15
    (source archive: https://github.com/strukturag/libde265/archive/refs/tags/v1.0.15.tar.gz)
  - libheif-js 1.23.5 (Emscripten build scripts that produced these files):
    https://github.com/catdad-experiments/libheif-js/tree/v1.23.5
    (source archive: https://github.com/catdad-experiments/libheif-js/archive/refs/tags/v1.23.5.tar.gz)
  - The npm package these files were copied from, unmodified:
    https://registry.npmjs.org/libheif-js/-/libheif-js-1.23.5.tgz
    integrity sha512-umXZPthnWZtF3iG/5mQG+AZ2V6i0UeYpo3z2CkggTEgL8dKmIIwJT6TDuAMuabXa1yTW8uJ1ZAgR+CxNTklYYw==

Written offer
-------------
For at least three years after we last serve these files, we will give anyone who asks a copy of
the complete corresponding source code of the versions above, on a common medium or as a
download, for no more than our cost of providing it. To ask, email support@getframeready.com.

Using your own build
--------------------
FrameReady does not compile these libraries into its own code. A Web Worker fetches
/heic/libheif.js (the Emscripten glue, a classic script that defines a global `libheif`
factory) and /heic/libheif.wasm only when you add a HEIC/HEIF photo in a browser that can't open
it natively. You may replace both files with your own build of libheif-js exposing the same
interface (HeifDecoder, heif_context_free and the image display() API), for example on a copy of
the site you host yourself, or with your browser's local overrides.

More: https://getframeready.com/licenses