cc-exr — CadCraft's OpenEXR / Radiance HDR / .cube library (lib/exr), Apache-2.0.

The OpenEXR file layout comes from the OpenEXR documentation. The exact bit layout of the PIZ (wavelet + Huffman),
PXR24 and B44 codecs and of the RLE/ZIP byte predictor follows OpenEXR's own C sources (src/lib/OpenEXRCore/
internal_piz.c, internal_huf.c, internal_pxr24.c, internal_b44.c, internal_rle.c, internal_zip.c), read as a
reference; the JavaScript here is ours. Their licence:

  Copyright (c) Contributors to the OpenEXR Project. All rights reserved.
  Portions copyright (c) DreamWorks Animation LLC and Industrial Light & Magic.

  Redistribution and use in source and binary forms, with or without modification, are permitted provided that the
  following conditions are met:
  1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following
     disclaimer.
  2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the
     following disclaimer in the documentation and/or other materials provided with the distribution.
  3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote
     products derived from this software without specific prior written permission.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

zlib (RFC 1950/1951), Radiance RGBE (Ward, Graphics Gems II) and the Cube LUT Specification 1.0 (Adobe, 2013) are
published documents; that code is ours from them.
