feat: JPEG-XL Support (encoding: "jxl")

[william-silversmith]

Hi Jeremy,

My lab has been exploring JPEG-XL for some time, and I finally got it working in my neuroglancer branch. I think it would be a good contribution to the ecosystem.

CloudVolume and Igneous both currently support JPEG-XL.

The implementation here uses the jxl-oxide implemention in Rust which I found easier to integrate than the C++ reference implementation.

Let me know what you think!

This was tested with both Grayscale and RGB color.

[jbms]

Hi, can you add support for an area constraint in addition to the width and height constraints, as in: 7ae9f64

[william-silversmith]

sure, will do.

[william-silversmith]

Ok! I think I set it up correctly.

[jbms]

Can you fix the formatting (see updated CONTRIBUTING.md) and also fix the wasm reproducibility issue?

[william-silversmith]

Seems like even though generating on MacOS (on the same machine) is consistent, ubuntu is doing something different. I'll have to try again on an Ubuntu machine.

[william-silversmith]

@jbms I rebuilt the wasm on an Ubuntu machine. Please see if the reproducibility issue is fixed by running the check again.

[william-silversmith]

Hi just wanted to check in and see if this is good to merge. <3 Thanks for all your hard work Jeremy. Once this merges, we'll start using JXL (lossless at the very least) on an industrial scale.

[jbms]

@william-silversmith There seems to be a reproducibility issue with the build -- do you think you can take a look? I tried pinning the docker container hash, which should be done anyway, but that does not seem to be sufficient.

[william-silversmith]

It might be that I didn't save a Cargo.lock file so if a dependency changes, it could change the binary. What I can do is open a new PR with a lock file generated.

[jbms]

It might be that I didn't save a Cargo.lock file so if a dependency changes, it could change the binary. What I can do is open a new PR with a lock file generated.

You did include a Cargo.lock file, so I think it may be something else.

[william-silversmith]

I see a Cargo.toml on github, but not a lock file in the repo. Am I missing it? Sorry!

[jbms]

Oh, good point --- I thought I checked for the Cargo.lock myself but I must have misread it --- thanks.

I applied the fix myself in this PR: #672