I looked (quickly) at the blueprints.<div><br><div>My feeling is that we could safely assume an sRGB by default world for source (images) and destination (prints) in a minimalist implementation. </div><div>In which case the issue is how to say this sanely to the rest of the world. Ie. do files need to be tagged as they get passed out for printing?</div>
<div>I'm sure everybody else here is smarter than me ...</div><div> </div><div>Edmund<br><br><div class="gmail_quote">On Wed, Mar 6, 2013 at 7:55 PM, Till Kamppeter <span dir="ltr"><<a href="mailto:till.kamppeter@gmail.com" target="_blank">till.kamppeter@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi,<br>
<br>
yesterday and today the first virtual Ubuntu Developer Summit (UDS) has<br>
taken place. Today I have held a session about the Ubuntu printing stack<br>
with mobile in mind:<br>
<br>
<br>
Session page with video of the session:<br>
<br>
<a href="http://summit.ubuntu.com/uds-1303/meeting/21685/client-1303-printing-stack-with-mobile-in-mind/" target="_blank">http://summit.ubuntu.com/uds-1303/meeting/21685/client-1303-printing-stack-with-mobile-in-mind/</a><br>
<br>
Relevant discussion starting around minute 31:00.<br>
<br>
Blueprint:<br>
<br>
<a href="https://blueprints.launchpad.net/ubuntu/+spec/client-1303-printing-stack-with-mobile-in-mind" target="_blank">https://blueprints.launchpad.net/ubuntu/+spec/client-1303-printing-stack-with-mobile-in-mind</a><br>
<br>
<br>
One of the points is to use Poppler and not Ghostscript as RIP, as<br>
Poppler is already there for the PDF screen viewer, none of the mobile<br>
apps sends jobs in PostScript, and Poppler produces a PostScript which<br>
is much more reliable on buggy PS printers than the PostScript coming<br>
out of Ghostscript.<br>
<br>
The latter reason makes me also thinking to use Poppler for the pdftops<br>
filter on the desktop.<br>
<br>
The only problem is that the Color Management support of Poppler is<br>
inferior to the color management of Ghostscript.<br>
<br>
Albert Astals Cid mentioned during the session that there are color<br>
management patches available for Poppler but as there are no CM experts<br>
under the Poppler developers the patches did not get reviewed.<br>
<br>
So I want to ask the color management experts here on the list whether<br>
they could review the patches and help to get Poppler on par with<br>
Ghostscript in terms of color management soon.<br>
<br>
Albert, can probably give you the links to the patches and related<br>
feature requests/bug reports.<br>
<br>
Thank you in advance for your cooperation.<br>
<br>
Till<br>
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</blockquote></div><br></div></div>