CUPS Dyesub Backends

  • Status Requires testing
  • Percent Complete
    30%
  • Task Type Feature Request
  • Category Mitsubishi CP9xxx family
  • Assigned To
    Solomon Peachy
  • Operating System All
  • Severity Low
  • Priority Medium
  • Reported Version 1.0
  • Due in Version Undecided
  • Due Date Undecided
  • Votes
  • Private
Attached to Project: CUPS Dyesub Backends
Opened by Solomon Peachy - 2017-03-23
Last edited by Solomon Peachy - 2018-04-19

FS#569 - Figure out image processing algorithms for CP-98xx family

They're an older-generation of the D70 family's.  Data tables are unfortunately embedded inside the drivers, which makes this a lot more challenging. Sigh.

(If nothing else, simply obtaining the RGB->YMC conversion/gamma tables would make the printers immediately useful..)

Admin
Solomon Peachy commented on 2018-01-22 00:56

On the CP-9810/9820, low-hanging fruit is to use the pre-generated matte data file instead of attempting to generate it for ourselves.

Admin
Solomon Peachy commented on 2018-01-22 02:37

Matte data plane in theory can now be read off of disk.  Untested, naturally.

Admin
Solomon Peachy commented on 2018-04-19 01:37

Managed to extract the data tables. Only 8bpp->12bpp gamma tables are decoded.

A ton of work to have the backend do this work. Needs testing.

Admin
Solomon Peachy commented on 2018-06-18 17:09

First pass (gamma) confirmed to work.  Anything further will require considerable RE effort.

Admin
Solomon Peachy commented on 2019-05-23 22:57
Accidentally nuked my (considerable) work with respect to reverse engineering the PPC OSX drivers. That set me back at least 40 hours.

Loading...

Available keyboard shortcuts

Tasklist

Task Details

Task Editing