[cups.development] How/where can I obtain a filter for cupsto produce PWG raster file?

Roy Samuel roy.samuel at celstream.com
Tue Mar 22 20:10:41 PDT 2011


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.

--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?

--2--  Also, is there a location where I can download a sample PWG
raster file?

 

I'm heading to compile & build the svn version of cups 1.5, with the
code modifications you have pointed out.

 

Thanks & Regards,

-Roy.

 

 

From: Michael Sweet [mailto:msweet at apple.com] 
Sent: Tuesday, March 22, 2011 10:08 PM
To: Mirror of cups.development Newsgroup
Subject: Re: [cups.development] How/where can I obtain a filter for
cupsto produce PWG raster file?

 

[Background for those reading along: PWG Raster is a subset of CUPS
Raster that is big-endian word order]

 

On Mar 22, 2011, at 3:29 AM, Roy Samuel wrote:

	Hi,

	I have installed the latest stable version of cups, 1.4.6 on my
Ubuntu (10.10) machine.

	 

	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?

 

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 cupsRasterOpen.

 

CUPS 1.2.x and later support reading of PWG Raster data and will
automatically handle any byte swapping that is needed.

 

	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.

	Any help would be appreciated. Perhaps some links to relevant
information?

 

For the current 1.5.x snapshot:

 

    http://www.cups.org/software.php

 

For the current PWG Raster specification:

 

    http://www.pwg.org/ipp

 

________________________________________________________________________
Michael Sweet, Senior Printing System Engineer, PWG Chair

 


______________________________________________________________________________
 DISCLAIMER: This electronic message and any attachments to this electronic
 message is intended for the exclusive use of the addressee(s) named herein
 and may contain legally privileged and confidential information. It is the 
 property of Celstream Technologies Pvt Limited. If you are not the intended
 recipient, you are hereby strictly notified not to copy, forward, distribute
 or use this message or any attachments thereto. If you have received this
 message in error, please delete it and all copies thereof, from your system
 and notify the sender at Celstream Technologies or 
 administrator at celstream.com immediately.
______________________________________________________________________________
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.cups.org/pipermail/cups/attachments/20110322/db7baf46/attachment.html>


More information about the cups mailing list