attachment-0001
<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns="http://www.w3.org/TR/REC-html40"
xmlns:ns1="http://schemas.microsoft.com/office/2004/12/omml">
<head>
<meta http-equiv=Content-Type content="text/html; charset=us-ascii">
<meta name=Generator content="Microsoft Word 11 (filtered medium)">
<!--[if !mso]>
<style>
v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style>
<![endif]-->
<style>
<!--a:link
{mso-style-priority:99;}
span.MSOHYPERLINK
{mso-style-priority:99;}
a:visited
{mso-style-priority:99;}
span.MSOHYPERLINKFOLLOWED
{mso-style-priority:99;}
p.MSOACETATE
{mso-style-priority:99;}
li.MSOACETATE
{mso-style-priority:99;}
div.MSOACETATE
{mso-style-priority:99;}
span.BALLOONTEXTCHAR
{mso-style-priority:99;}
/* Font Definitions */
@font-face
{font-family:Helvetica;
panose-1:2 11 6 4 2 2 2 2 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:Cambria;
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:Calibri;}
a:link, span.MsoHyperlink
{color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{color:purple;
text-decoration:underline;}
p.MsoAcetate, li.MsoAcetate, div.MsoAcetate
{margin:0in;
margin-bottom:.0001pt;
font-size:8.0pt;
font-family:Tahoma;}
span.BalloonTextChar
{font-family:Tahoma;}
span.EmailStyle19
{mso-style-type:personal;
font-family:Calibri;
color:windowtext;}
span.EmailStyle20
{mso-style-type:personal-reply;
font-family:Cambria;
color:blue;
font-weight:normal;
font-style:normal;
text-decoration:none none;}
@page Section1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.Section1
{page:Section1;}
-->
</style>
<!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang=EN-US link=blue vlink=purple>
<div class=Section1>
<p class=MsoNormal><font size=3 color=blue face=Cambria><span style='font-size:
12.0pt;font-family:Cambria;color:blue'>I was looking some of the PWGR images
you provided. I expected the sgray-8 to have 8 bits/color and 8 bits/pixel
but the file shows 24 bits/pixel. Which is correct?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Cambria><span style='font-size:
12.0pt;font-family:Cambria;color:blue'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Cambria><span style='font-size:
12.0pt;font-family:Cambria;color:blue'>Glen<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Cambria><span style='font-size:
12.0pt;font-family:Cambria;color:blue'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Cambria><span style='font-size:
12.0pt;font-family:Cambria;color:blue'><o:p> </o:p></span></font></p>
<div>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span style='font-size:12.0pt;font-family:"Times New Roman"'>
<hr size=2 width="100%" align=center tabindex=-1>
</span></font></div>
<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
ipp-bounces@pwg.org [mailto:ipp-bounces@pwg.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b>Roy Samuel<br>
<b><span style='font-weight:bold'>Sent:</span></b> Thursday, April 28, 2011
9:47 PM<br>
<b><span style='font-weight:bold'>To:</span></b> ipp@pwg.org; Michael Sweet<br>
<b><span style='font-weight:bold'>Subject:</span></b> [IPP] Question on PWG
draft specification mismatch & parsing</span></font><font size=3
face="Times New Roman"><span style='font-size:12.0pt;font-family:"Times New Roman"'><o:p></o:p></span></font></p>
</div>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>Hi
Michael,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>I
had downloaded the sample PWGRaster files from: <a
href="http://ftp.easysw.com/pub/cups/examples/PWGRasterSamples.zip">http://ftp.easysw.com/pub/cups/examples/PWGRasterSamples.zip</a>,
with your latest working draft of the PWG raster found at: <a
href="ftp://ftp.pwg.org/pub/pwg/ipp/wd/wd-ippraster10-20110327-rev.pdf">ftp://ftp.pwg.org/pub/pwg/ipp/wd/wd-ippraster10-20110327-rev.pdf</a>.
I compared the raster files in the folders:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>PWGRasterSamples\srgb-16
&<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>PWGRasterSamples\srgb-8,
with the specs given in the draft document.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>I
found that neither of the directories contained files that adhered to the draft
document w.r.t parsing the header. Specifically for the value of
‘NumColors’. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>--1--<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>According
to the draft document, bytes 420-423 need to contain ‘NumColors’
value, however, I found them to be zero. Are the sample files outdated??<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>--2--<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>Based
on the decode algorithm given in the draft document, I had tried to obtain
plain RGB raster data from a pwg-raster file. I had converted the PDF document
obtained here: <a href="http://orenyomtov.com/downloads/testpage.pdf">http://orenyomtov.com/downloads/testpage.pdf</a>
to obtain pwg-raster file using Google cloud print. I am able to get the pwg-raster
file from GCP successfully. However, on converting the pwg-raster file to RGB
data, I have been successful in decoding around 1/6<sup>th</sup> or so,
to raster data successfully, i.e. the top part of the page is being rendered
successfully, while the rest is not rendered.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>(I
use GIMP to open the output raster file in RAW mode).<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>I
have attached a screenshot of the output file that I’m able to view
through GIMP (scaled down version).<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>Is
my algorithm wrong? Or are the specs incorrect?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>Regards.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:black'>_________________________________________________</span></font><b><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy;font-weight:bold'><o:p></o:p></span></font></b></p>
<p class=MsoNormal><b><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:navy;font-weight:bold'>Roy
Samuel | Celstream Technologies | </span></font></b><b><font size=2 color=blue
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue;
font-weight:bold'><a href="http://www.celstream.com/">www.celstream.com</a></span></font></b><b><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy;font-weight:bold'><o:p></o:p></span></font></b></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt;font-family:"Times New Roman"'><br>
-- <br>
This message has been scanned for viruses and <br>
dangerous content by <a href="http://www.mailscanner.info/"><b><span
style='font-weight:bold'>MailScanner</span></b></a>, and is <br>
believed to be clean. <o:p></o:p></span></font></p>
</div>
<br />--
<br />This message has been scanned for viruses and
<br />dangerous content by
<a href="http://www.mailscanner.info/"><b>MailScanner</b></a>, and is
<br />believed to be clean.
</body>
</html>
<table><tr><td bgcolor=#ffffff><font color=#000000><pre>______________________________________________________________________________
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@celstream.com immediately.
______________________________________________________________________________</pre></font></td></tr></table>