Flyspray:: Flyspray::CUPS Dyesub Backends: Recently closed tasks 2019-01-30T03:17:19Z FS#571: Check for error statuses in the Kodak 605 processing loops. 2019-01-30T03:17:19Z 2017-03-23T04:10:48Z

We don't check any error codes at all.  In part because I don't know what's an error and what isn't.  With access to a printer this would be a lot easier..

Solomon Peachy
FS#552: Write network backend for CPnP printers 2019-01-30T01:01:59Z 2016-10-13T03:47:06Z

The 'selphy_go' code showed how to detect CPnP models and send JPGs over to be printed..

Using the CP900, I discovered how to send raw YMC data over CPnP.  This means we can write a native CPnP CUPS+Gutenprint backend for that model.

Unfortunately we won't know if the newer selphyneo models support non-jpeg CPnP printing -- The Windows driver uses WSA/WSD and Macs appear to use AirPrint.  The only way to find out is to write it first.

Solomon Peachy
FS#540: Investigate Fuji ASK 2000/2500/4000 (aka Nidec Copal DPB-6000/7000/4000) 2019-01-29T22:01:39Z 2015-08-26T04:22:51Z

They are all related; The 4000 is an 8" version, and the 2000 is an older, slower version of the 2500, both 6" models.


All are rebadged versions of Nidec Copal printers -- ASK4000 == DPB-4000C1, ASK2500 == DPB-7000, ASK2000 == DPB-6000

Solomon Peachy
FS#595: When trying to enumerate printers, don't block for a long time when one's busy 2019-01-17T14:43:54Z 2018-02-16T12:11:44Z

This is a particular problem when we have more than one model of the same printer family attached, and one or more of them are busy doing something -- but we can't query the serial number when the printer is claimed.

This may require a two pass approach -- first try to probe everything with minimal timeouts.  If we don't succeed in finding the one we want, re-try the probe with longer timeouts.  In both cases, we shouldn't report a failure until we finish walking the entire list.

Solomon Peachy
FS#603: Support using external LUT 2018-12-16T01:23:59Z 2018-06-28T19:03:05Z

The official drivers come with a file called 'P95D.lut' that consists of a 16-byte header followed by 34 bytes of LUT that neatly fit into the "gamma" header.  I see two approaches:

  1. Add another gamma enumeration, for "external LUT"
    • Have the backend read the file and fil the job at runtime
    • Permanently store the file in the backend, fill job at runtime
  2. Have Gutenprint fill in the gamma table from hardcoded value
  3. Allow gutenprint's gamma table to be overridden.

I'm thinking that pushing this into Gutenprint (hardcoded, but overridable via an option) is the right way to do this.

Solomon Peachy
FS#539: Consolidate CW-01 and DNP backends 2018-09-18T18:10:15Z 2015-08-26T04:12:50Z

There's a great deal of overlap; the main difference is the format of the print job. It may make sense to fold the CW-01 stuff into the DNP backend (including the spool format), but alternatively perhaps just a shared library?

Solomon Peachy
FS#550: Verify support for D707 2018-09-18T18:09:48Z 2016-10-07T02:03:18Z

Code's complete, but needs to be verified.


Solomon Peachy
FS#604: Use a simpler URI scheme 2018-09-18T18:08:41Z 2018-08-14T20:25:58Z

Currently the URI scheme is a little convoluted:


I'd like to move to something much simpler:


Now that the core code returns a unique, per-model string that can be used to look up the backend, this is a far simpler approach to take.  We'll have to support the old scheme indefinitely though.

Solomon Peachy
FS#541: Validate Mitsubishi CP-D90 support 2018-05-20T02:11:13Z 2016-04-28T22:41:05Z

It looks like it's an evolution of the D70 family, with one critical exception -- it appears as if the color/thermal compensation is performed in the printer instead of the driver!

Solomon Peachy
FS#601: Figure out a way to add a generic test harness for file parsing 2018-05-13T13:09:37Z 2018-05-10T02:14:19Z

Right now there's no way to parse the input files without the printer being attached first.

Would require shimming libusb...

Solomon Peachy