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Hi Smith,<br><br>Here is the definition of "printer-icons" from the most recent<br>draft of IPP JPS3:<br><br><a href="ftp://ftp.pwg.org/pub/pwg/ipp/wd/wd-ippjobprinterext3v10-20120131.pdf">ftp://ftp.pwg.org/pub/pwg/ipp/wd/wd-ippjobprinterext3v10-20120131.pdf</a><br>
<br>5.6.29 printer-icons (1setOf uri)<br><br>The REQUIRED "printer-icons" Printer attribute lists one or more Printer-resident images using "http:" or "https:" URIs. The referenced images MUST be RGBA PNG [RFC2083] format, have square dimensions of 48x48, 128x128, or 512x512 pixels, represent the physical appearance of the Printer, and show the same perspective/view of the Printer. If only one image is provided, it MUST have dimensions of 128x128 pixels. Images MUST be listed from smallest to largest dimensions. Images MUST provide an alpha channel to mask the background surrounding the printer.<br>
<br>The Abstract of RFC 2083 says:<br><br> "This document describes PNG (Portable Network Graphics), an<br> extensible file format for the lossless, portable, well-compressed<br> storage of raster images. PNG provides a patent-free replacement for<br>
GIF and can also replace many common uses of TIFF. Indexed-color,<br> grayscale, and truecolor images are supported, plus an optional alpha<br> channel. Sample depths range from 1 to 16 bits.<br><br> PNG is designed to work well in online viewing applications, such as<br>
the World Wide Web, so it is fully streamable with a progressive<br> display option. PNG is robust, providing both full file integrity<br> checking and simple detection of common transmission errors. Also,<br> PNG can store gamma and chromaticity data for improved color matching<br>
on heterogeneous platforms.<br><br> This specification defines the Internet Media Type image/png."<br><br>Does that answer all your questions?<br><br>Cheers,<br>- Ira (co-chair of IPP WG)<br><br><br>Ira McDonald (Musician / Software Architect)<br>
Chair - Linux Foundation Open Printing WG<br>Secretary - IEEE-ISTO Printer Working Group<br>Co-Chair - IEEE-ISTO PWG IPP WG<br>Co-Chair - TCG Trusted Mobility Solutions WG<br>Chair - TCG Embedded Systems Hardcopy SG<br>IETF Designated Expert - IPP & Printer MIB<br>
Blue Roof Music/High North Inc<br><a style="color:rgb(51,51,255)" href="http://sites.google.com/site/blueroofmusic" target="_blank">http://sites.google.com/site/blueroofmusic</a><br><a style="color:rgb(102,0,204)" href="http://sites.google.com/site/highnorthinc" target="_blank">http://sites.google.com/site/highnorthinc</a><br>
mailto:<a href="mailto:blueroofmusic@gmail.com" target="_blank">blueroofmusic@gmail.com</a><br>Winter 579 Park Place Saline, MI 48176 734-944-0094<br>Summer PO Box 221 Grand Marais, MI 49839 906-494-2434<div style="display:inline">
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<br><br><div class="gmail_quote">On Sat, Mar 17, 2012 at 1:19 PM, Kennedy, Smith (Wireless Architect) <span dir="ltr"><<a href="mailto:smith.kennedy@hp.com">smith.kennedy@hp.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Greetings,<br>
<br>
Can anybody provide me with some information about IPP and what facilities it provides to supply printer icons? I have found the "printer-icons" attribute in the IPP Everywhere specification, which refers me to PWG 5100.JSP3, but so far haven't been able to fully track down the definition of that attribute. Are there any other IPP operations or attributes for operations that provide icon information?<br>
<br>
Are either PNG or Windows Icon (.ico) image file formats specified by any IPP specification as formats that must be used or supported? If the latter is specified or allowed, are there any royalty issues with using that format? And with PNG files, is there a facility for the Printer Object to supply a set of files at resolutions, sort of like an unpacked .ico file?<br>
<br>
Thanks for any help or guidance,<br>
Smith<br>
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