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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Thanks a tonne for clarifying. Appreciate it! <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> cups-dev-bounces@easysw.com [mailto:cups-dev-bounces@easysw.com] <b>On Behalf Of </b>Michael Sweet<br><b>Sent:</b> Wednesday, March 23, 2011 10:58 AM<br><b>To:</b> Mirror of cups.development Newsgroup<br><b>Subject:</b> Re: [cups.development] How/where can I obtain a filter for cupstoproduce PWG raster file?<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal>On Mar 22, 2011, at 8:09 PM, Roy Samuel wrote:<o:p></o:p></p></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Thanks Michael for the reply :) My goal is to produce a PWG raster file first, and then to write code which would decode the PWG raster file to plain RGB (uncompressed). I understand that ‘Google cloud print’ has chosen PWG raster as their PDL, and printers would come with support for PWG raster baked in.</span><o:p></o:p></p></div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>--1-- Is the code for decoding PWG raster file to RGB data already existing in the public domain? If so, would you direct me to it?</span><o:p></o:p></p></div></div></blockquote><div><p class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal>There is no "public domain" code that I am aware of. The CUPS code is provided under the terms of the LGPL2.<o:p></o:p></p></div><div><p class=MsoNormal><br><br><o:p></o:p></p><div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>--2-- Also, is there a location where I can download a sample PWG raster file?</span><o:p></o:p></p></div></div><div><p class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal>Not that I am aware of. Ghostscript, cgpdftoraster (Mac OS X), and the imagetoraster filter included with CUPS are all capable of generating CUPS Raster, from which you can derive PWG Raster (which is big-endian CUPS Raster).<o:p></o:p></p></div><div><p class=MsoNormal><br><br><o:p></o:p></p><div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><o:p></o:p></p></div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I’m heading to compile & build the svn version of cups 1.5, with the code modifications you have pointed out.</span><o:p></o:p></p></div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><o:p></o:p></p></div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Thanks & Regards,</span><o:p></o:p></p></div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>-Roy.</span><o:p></o:p></p></div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><o:p></o:p></p></div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><o:p></o:p></p></div><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in;border-width:initial;border-color:initial'><div><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span class=apple-converted-space><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> </span></span><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Michael Sweet [mailto:msweet@apple.com]<span class=apple-converted-space> </span><br><b>Sent:</b><span class=apple-converted-space> </span>Tuesday, March 22, 2011 10:08 PM<br><b>To:</b><span class=apple-converted-space> </span>Mirror of cups.development Newsgroup<br><b>Subject:</b><span class=apple-converted-space> </span>Re: [cups.development] How/where can I obtain a filter for cupsto produce PWG raster file?</span><o:p></o:p></p></div></div></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><div><div><p class=MsoNormal>[Background for those reading along: PWG Raster is a subset of CUPS Raster that is big-endian word order]<o:p></o:p></p></div></div><div><div><p class=MsoNormal> <o:p></o:p></p></div></div><div><div><p class=MsoNormal>On Mar 22, 2011, at 3:29 AM, Roy Samuel wrote:<o:p></o:p></p></div></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>Hi,</span><o:p></o:p></p></div></div><div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>I have installed the latest stable version of cups, 1.4.6 on my Ubuntu (10.10) machine.</span><o:p></o:p></p></div></div><div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'> </span><o:p></o:p></p></div></div><div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>I would like to be able to produce a PWG raster file written on to disk. Is the PWG raster a filter that cups would be using? If so, where can I get to use it?</span><o:p></o:p></p></div></div></div></blockquote><div><div><p class=MsoNormal> <o:p></o:p></p></div></div><div><p class=MsoNormal>CUPS 1.4.x does not support writing of PWG Raster data. Support was added in CUPS 1.5.x and can be chosen by using the CUPS_RASTER_WRITE_PWG value when calling<span class=apple-converted-space> </span><i>cupsRasterOpe</i>n.<o:p></o:p></p></div></div><div><div><p class=MsoNormal> <o:p></o:p></p></div></div><div><div><p class=MsoNormal>CUPS 1.2.x and later support reading of PWG Raster data and will automatically handle any byte swapping that is needed.<o:p></o:p></p></div></div><div><div><p class=MsoNormal> <o:p></o:p></p></div></div><div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>Would you guide me in how this can be done? Also, if you can send me a sample PWG raster file (link to it), it would be of great help.</span><o:p></o:p></p></div></div><div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>Any help would be appreciated. Perhaps some links to relevant information?</span><o:p></o:p></p></div></div></div></blockquote><div><p class=MsoNormal> <o:p></o:p></p></div></div><div><div><p class=MsoNormal>For the current 1.5.x snapshot:<o:p></o:p></p></div></div><div><div><p class=MsoNormal> <o:p></o:p></p></div></div><div><div><p class=MsoNormal> <a href="http://www.cups.org/software.php">http://www.cups.org/software.php</a><o:p></o:p></p></div></div><div><div><p class=MsoNormal> <o:p></o:p></p></div></div><div><div><p class=MsoNormal>For the current PWG Raster specification:<o:p></o:p></p></div></div><div><div><p class=MsoNormal> <o:p></o:p></p></div></div><div><div><p class=MsoNormal> <a href="http://www.pwg.org/ipp">http://www.pwg.org/ipp</a><o:p></o:p></p></div></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><div><div><p class=MsoNormal><span style='font-size:13.5pt;font-family:"Helvetica","sans-serif";color:black'>________________________________________________________________________<br>Michael Sweet, Senior Printing System Engineer, PWG Chair</span><o:p></o:p></p></div></div></div><div><p class=MsoNormal> <o:p></o:p></p></div><table class=MsoNormalTable border=0 cellpadding=0><tr><td style='background:white;padding:.75pt .75pt .75pt .75pt'><pre><span style='color:black'>______________________________________________________________________________<o:p></o:p></span></pre><pre><span style='color:black'> DISCLAIMER: This electronic message and any attachments to this electronic<o:p></o:p></span></pre><pre><span style='color:black'> message is intended for the exclusive use of the addressee(s) named herein<o:p></o:p></span></pre><pre><span style='color:black'> and may contain legally privileged and confidential information. It is the <o:p></o:p></span></pre><pre><span style='color:black'> property of Celstream Technologies Pvt Limited. If you are not the intended<o:p></o:p></span></pre><pre><span style='color:black'> recipient, you are hereby strictly notified not to copy, forward, distribute<o:p></o:p></span></pre><pre><span style='color:black'> or use this message or any attachments thereto. If you have received this<o:p></o:p></span></pre><pre><span style='color:black'> message in error, please delete it and all copies thereof, from your system<o:p></o:p></span></pre><pre><span style='color:black'> and notify the sender at Celstream Technologies or <o:p></o:p></span></pre><pre><span style='color:black'> <a href="mailto:administrator@celstream.com">administrator@celstream.com</a> immediately.<o:p></o:p></span></pre><pre><span style='color:black'>______________________________________________________________________________<o:p></o:p></span></pre></td></tr></table><p class=MsoNormal><span style='font-size:13.5pt;font-family:"Andale Mono","serif"'>_______________________________________________<br>cups-dev mailing list<br><a href="mailto:cups-dev@easysw.com">cups-dev@easysw.com</a><br><a href="http://lists.easysw.com/mailman/listinfo/cups-dev">http://lists.easysw.com/mailman/listinfo/cups-dev</a><o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal><span style='font-size:13.5pt;font-family:"Helvetica","sans-serif";color:black'>__________________________________________________<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:13.5pt;font-family:"Helvetica","sans-serif";color:black'>Michael Sweet, Senior Printing System Engineer, PWG Chair<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p></div></body></html>
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