I recently received news from Till Kamppeter about the color troubles and t=
utility of gutenprint.
You'll find his answer below:
> > Next, has you noticed, there is colours (and grayscale) troubles
> > with SpliX... The rendering is done by pstoraster which use ghostscript.
> > So i'm pretty sure that the problem come from the translation algorithm
> > from RGB to CYMK under ghostscript. Do you have some information about
> > that?
> No, you should file a bug against Ghostscript if the RGB-->CYMK
> conversion does not work properly. Please file the bug on
> http://bugs.ghostscript.com/, NOT on the CUPS web site, as ESP
> Ghostscript is discontinued and the "cups" output device is now standard
> part of GPL Ghostscript.
> But before filing the bug check whether it is not already fixed in the
> current GPL Ghostscript. Go to
> and follow the instructions to either install the
> distribution-independent LSB binary or the source of GPL Ghostscript
> 8.57 with the ESP Ghostscript functionality merged in. File the bug if
> the results do not get better.
> > I notice that lots of inkjet printers use gutenprint to render postscri=
> > documents so i'm trying to integrate gutenprint under SpliX to do the
> > rendering. It is a good idea?
> If you want to make use of the advanced color and dithering
> functionality of Gutenprint, join the Gutenprint project and make your
> SPL driver a part of Gutenprint, instead of ripping out code which then
> had to be maintained both by the Gutenprint developers and you.
Since i still don't have color printer, i can't help all these things. So i=
waiting for your reports. If there are still troubles, can you send a bug=20
report for ghostscript?
About the new compression algorithm, i'm working on it. The compression=20
routine has been extracted and is currently analysed. This new algorithm is=
more sophisticated than the previous one. So it will take quite long time=20
before i can understand it perfectly. I will inform you each time i'll got=
M. Aur=E9lien Croc
Projet AP=B2C - http://www.ap2c.org
Clef Publique : http://www.ap2c.org/aurelien.gpg