OpenPrinting / OpenPrinting/libcupsfilters
Add support for JPEG-XL as input format
Nobody has claimed this yet.
- Dominant language
- C
- Stars
- 17
- Forks
- 71
- Avg merge
- 2d 17h
- Merged PRs (30d)
- 13
Description
JPG-XL is a more modern successor of JPG, supporting high color depths (>8 bits per color), HDR, more flexibility with compression rates, ... to allow for high-quality image files in a standard format. A free software library supporting this format is available, libjxl.
Therefore we should add support for this format and try to carry on to the printer as much as possible of the image quality, especially the higher color depth, as the PWG and CUPS Raster support up to 16 bits per color.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
No source file, test, or entry point is named. Start by tracing how input image formats reach the PWG and CUPS Raster output paths, then examine libjxl integration and existing 16-bit color handling; done means JPEG-XL input reaches the printer while preserving supported image quality.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- c
- Domain
- computer-graphics
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100