Michael,<div> </div><div>I don't quite understand 16 bit colorN as a solution to most printing problems, at least for Gutenprint. </div><div><br></div><div>Maybe you could outline a realistic way you think the system would operate, so we can understand the intended design philosophy. </div> <div><br></div><div>Edmund</div><div><br><div class="gmail_quote">On Wed, Jan 25, 2012 at 5:10 PM, Michael Sweet <span dir="ltr"><<a href="mailto:msweet@apple.com">msweet@apple.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> <div class="im">On Jan 25, 2012, at 2:19 AM, Kai-Uwe Behrmann wrote:<br> > ...<br> </div><div class="im">> As it was not clear in the past how to place Gutenprint calibration data passed along PPD files, I am much interessted how does the situation change for that through IPP.<br> > How do you plan to populate your calibration data along Gutenprint vendor ICC profiles in a IPP world? Do you plan to make use of the IPP "printer-icc-profiles" attribute and the associated job ticket attributes?<br> <br> </div>Gutenprint "calibration" data isn't something that can be passed as options presently; at the IPP level we can support sending arbitrarily-long lists of numbers (as might be used for a lookup table) as an attribute which the driver will see as a comma-delimited string on the command-line, however that seems like a poor solution in the long term since it requires the application or toolkit to furnish that data each time.<br> <br> (Gutenprint *does* have a real 16-bit per color DeviceN path, and if that path was supported by Ghostscript then that would likely be a viable option for an ICC-based workflow...)<br> <div class="im HOEnZb"><br> __________________________________________________<br> Michael Sweet, Senior Printing System Engineer, PWG Chair<br> <br> </div><div class="HOEnZb"><div class="h5">_______________________________________________<br> openicc mailing list<br> <a href="mailto:openicc@lists.freedesktop.org">openicc@lists.freedesktop.org</a><br> <a href="http://lists.freedesktop.org/mailman/listinfo/openicc" target="_blank">http://lists.freedesktop.org/mailman/listinfo/openicc</a><br> </div></div></blockquote></div><br></div>