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Actual users, perhaps. Or maybe concern trolls paid by a patent holder who's trying to prepare the ground for a patent-based extortion scheme. Or maybe Jon Sneyers with an army of sock puppets. These "actual users" are just as real to me as Chrome's telemetry.
That said: these actual users didn't demonstrate any hacker spirit or interest in using JXL in situations where they could. Where's the wide-spread use of jxl.js (https://github.com/niutech/jxl.js) to demonstrate that there are actual users desperate for native codec support? (aside: jxl is based on Squoosh, which is a product of GoogleChromeLabs)
Instead all I see is people _not_ exercising their freedom and initiative to support that best-thing-since-slices-bread-apparently format but whining that Chrome is oh-so-dominant and forces their choices of codecs upon everybody else.
Okay then...
https://github.com/libjxl/libjxl/blob/main/doc/format_overvi... is a pretty detailed but good overview. The highlights are variable size DCT (up to 128x128), ANS entropy prediction, and chroma from luminance prediction. https://github.com/libjxl/libjxl/blob/main/doc/encode_effort... also gives a good breakdown of features by effort level.
It's so frustrating how the chromium team is ending up as a gatekeeper of the Internet by pick and choosing what gets developed or not.
I recently come across another issue pertaining to the chromium team being not budging on their decisions, despite pressure from the community and an RFC backing it up - in my case custom headers in WebSocket handshakes, that are supported by other Javascript runtimes like node and bun, but the chromium maintainer just disagrees with it - https://github.com/whatwg/websockets/issues/16#issuecomment-...
>I don't believe QOI will ever have any sort of real-world practical use
Prusa (the 3d printer maker) seems to think otherwise: https://github.com/prusa3d/Prusa-Firmware-Buddy/releases/tag...
[0] for those interested in Highway.
It's also mentioned in [1], which starts off
> Today we're sharing open source code that can sort arrays of numbers about ten times as fast as the C++ std::sort, and outperforms state of the art architecture-specific algorithms, while being portable across all modern CPU architectures. Below we discuss how we achieved this.
[0] https://github.com/google/highway
[1] https://opensource.googleblog.com/2022/06/Vectorized%20and%2..., which has an associated paper at https://arxiv.org/pdf/2205.05982.pdf.
Pretty much every codec in every browser is written in an unsafe language, unfortunately. I don't see why JXL should be singled out. On the other hand, there is a JXL decoder in Rust called jxl-oxide [1] which works quite well, and has been confirmed by JPEG as conformant. Hopefully it will be adopted for decode-only usecases.
[1] https://github.com/tirr-c/jxl-oxide/pull/267
> It’s absolute insanity that we write codecs — pure functions — in an unsafe language that has a compiler that defaults to “anything goes” as an optimisation technique.
Rust and C++ are exactly the same in how they optimize, compilers for both assume that your code has zero UB. The difference is that Rust makes it much harder to accidentally have UB.