[magicalhippo]

> Mozilla has no desire to introduce a barely supported massive C++ decoder for marginal gains

On a slightly related note, I wanted to have a HDR background image in Windows 11. Should be a breeze in 2025 right?

Well, Windows 11 only supports JPEG XR[1] for HDR background images. And my commonly used tools did either not support JPEG XR (Gimp fex) or they did not work correctly (ImageMagick).

So I had a look at the JPEG XR reference implementation, which was hosted on Codeplex but has been mirrored on GitHub[2]. And boy, I sure hope that isn't the code that lives in Windows 11...

Ok most of the gunk is in the encoder/decoder wrapper code, but still, for something that's supposedly still in active use by Microsoft... Though not even hosting their own copy of the reference implementation is telling enough I suppose.

[1]: https://en.wikipedia.org/wiki/JPEG_XR

[2]: https://github.com/4creators/jxrlib

[infinet]

Another JPEG XR user is Zeiss. It saves both grayscale and color microscope images with JPEG XR compression in a container format. Zeiss also released a C++ library (libczi) using the reference JPEG XR implementation to read/write these images. Somehow Zeiss is moving away from JPEG XR - its newer version of microscope control software saves with zstd compression by default.