[gs-devel] Gimp-Print 4.2.1

[Mike Sweet]

Robert L Krawitz wrote:
> I forgot to send the announcement to the gs-devel list, but 4.2.1
> includes the IJS driver in addition to a flood of bug fixes.  The IJS
> driver offers one major feature that the monolithic one doesn't, CMYK
> printing.

Keep in mind that the current IJS driver does not provide a true
CMYK path, but generates CMYK from RGB...

Also, the CMYK rendering path does not seem to work in the current
version of GNU Ghostscript; the CUPS driver normally uses it, but
right now has the necessary code commented out since all we get
from Ghostscript is a blank page - the map_cmyk_color method is
never getting called when num_components is 4...

> On another note, is Ghostscript ever going to offer a 16-bit output
> mode, to match Gimp-print's 16-bit raw CMYK mode?  With color
> management in Ghostscript, this would make it an extremely powerful
> RIP.

I would also be interested in this for the CUPS driver; the main
problem I see right now is that the driver interface only supports
32-bit color indices, which makes is rather difficult to support
more than 4 colors at 8-bits per component or 2 colors at 16-bits
per component.

We've looked at writing a new driver based on the CUPS imaging
library (which supports arbitrary pixel depths and tile management)
to avoid the overhead of transforming a few hundred million CIE XYZ
values to DeviceN using the current gdevprn-based driver.

-- 
______________________________________________________________________
Michael Sweet, Easy Software Products                  mike at easysw.com
Printing Software for UNIX                       http://www.easysw.com