attachment
<div dir="ltr"><div><div><div>Hi Harry,<br><br></div>Thanks! Very useful AFPC document.<br><br></div>Cheers,<br></div>- Ira<br><br></div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature"><div dir="ltr">Ira McDonald (Musician / Software Architect)<br>Co-Chair - TCG Trusted Mobility Solutions WG<br>Chair - Linux Foundation Open Printing WG<br>Secretary - IEEE-ISTO Printer Working Group<br>Co-Chair - IEEE-ISTO PWG Internet Printing Protocol WG<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<br><br><div style="display:inline"></div><div style="display:inline"></div><div style="display:inline"></div><div></div><div></div><div></div><div></div></div></div></div>
<br><div class="gmail_quote">On Wed, Oct 21, 2015 at 11:37 AM, Michael Sweet <span dir="ltr"><<a href="mailto:msweet@apple.com" target="_blank">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 style="word-wrap:break-word">Harry,<div><br></div><div>Thanks for this. After reviewing the section on JPEG, it looks like the only keyword I haven't covered is 'hierarchical'. The referenced document also includes some good information on how each of the features is implemented in JPEG...</div><div><br></div><div><br></div><div><div><blockquote type="cite"><div>On Oct 21, 2015, at 11:10 AM, <a href="mailto:Harry.Lewis@ricoh-usa.com" target="_blank">Harry.Lewis@ricoh-usa.com</a> wrote:</div><br><div><font face="sans-serif" size="2">Hi Michael. I think the "jpeg-features-supported"
attribute is a good idea and your registered keywords make sense. I don't
know how useful anyone in the PWG will find this but, in the same wheelhouse,
the AFPC has defined (print) "subsets" for several widely available
formats TIFF, JPEG, PNG and SVG (not published yet). The AFP subset for
JPEG was submitted to ISO in 2011 and became or formed the basis for </font><a href="https://www.iso.org/obp/ui/#iso:std:iso-iec:10918:-6:ed-1:v1:en" target="_blank"><font face="sans-serif" color="blue" size="2"><b>ISO/IEC
10918-6 Application to printing systems</b></font></a><font face="sans-serif" size="2"><b>
</b></font><font face="sans-serif" size="2">now a published ISO standard.
I'm not suggesting this intersects 100% with Apple's attributes but mention
it as FYI in case you might find it helpful in general. It has been a while
since ISO published and I don't recall what additions or changes may have
occurred so persons really interested are advised to purchase the ISO standard.
Meanwhile, the AFPC document is </font><a href="http://afpcinc.org/wp-content/uploads/2014/04/AFPC-Subsets-v2.0.pdf" target="_blank"><font face="sans-serif" color="blue" size="2">freely
available</font></a><font face="sans-serif" size="2"> and the PWG is free
to reference the document if that ever makes sense. </font>
<br>
<br><font face="Verdana" size="2"><b>Harry Lewis</b></font><font face="Verdana" color="#808080" size="1"><br>
AFPC President & Secretary<br>
Program Manager IP & Standards<br>
Phone: <a href="tel:720-663-3456" value="+17206633456" target="_blank">720-663-3456</a><br>
e-mail: <a href="mailto:harry.lewis@ricoh-usa.com" target="_blank">harry.lewis@ricoh-usa.com</a></font><font face="Verdana" size="2"><br>
</font><span><Mail Attachment.gif></span>
<br>
<br>
<br>
<br><font face="sans-serif" color="#5f5f5f" size="1">From:
</font><font face="sans-serif" size="1">Michael Sweet <<a href="mailto:msweet@apple.com" target="_blank">msweet@apple.com</a>></font>
<br><font face="sans-serif" color="#5f5f5f" size="1">To:
</font><font face="sans-serif" size="1">ipp <<a href="mailto:ipp@pwg.org" target="_blank">ipp@pwg.org</a>></font>
<br><font face="sans-serif" color="#5f5f5f" size="1">Date:
</font><font face="sans-serif" size="1">10/21/2015 05:56 AM</font>
<br><font face="sans-serif" color="#5f5f5f" size="1">Subject:
</font><font face="sans-serif" size="1">[IPP] Registration
template for "jpeg-features-supported (1setOf type2 keyword)"</font>
<br><font face="sans-serif" color="#5f5f5f" size="1">Sent by:
</font><font face="sans-serif" size="1"><a href="mailto:ipp-bounces@pwg.org" target="_blank">ipp-bounces@pwg.org</a></font>
<br>
<hr noshade><div><div class="h5">
<br>
<br>
<br><tt><font size="2">All,<br>
<br>
Apple would like to register a new "jpeg-features-supported (1setOf
type2 keyword)" attribute for the purpose of describing the optional
features that a Printer supports in the JPEG file interchange format (JFIF,
image/jpeg MIME media type). The following keyword values will initially
be registered:<br>
<br>
- 'none': The Printer only supports the baseline JFIF format; this keyword
only appears by itself.<br>
- 'arithmetic': The Printer supports arithmetic encoding.<br>
- 'cmyk': The Printer supports CMYK images.<br>
- 'deep': The Printer supports more than 8 bits per component.<br>
- 'icc': The Printer supports embedded ICC profiles.<br>
- 'lossless': The Printer supports lossless JPEG encoding.<br>
- 'progressive': The Printer supports progressive encoding.<br>
<br>
The primary purpose of this attribute is to allow the Client to determine
whether a JPEG file can be printed directly or must be converted to an
alternate form (e.g. PWG Raster) prior to printing. Because of the
way many printers process JPEG files, some features (ICC and CMYK support
in particular) are silently ignored if not supported, leading to incorrect
output (otherwise we could look for a document-format error and retry...)<br>
<br>
....<br>
<br>
Printer Description attributes:
Reference<br>
------------------------------
---------<br>
jpeg-features-supported (1setOf type2 keyword)
[APPLE20151021]<br>
<br>
<br>
Attributes (attribute syntax)<br>
Keyword Attribute Value
Reference<br>
-----------------------
---------<br>
jpeg-features-supported (1setOf type2 keyword)
[APPLE20151021]<br>
arithmetic
[APPLE20151021]<br>
cmyk
[APPLE20151021]<br>
deep
[APPLE20151021]<br>
icc
[APPLE20151021]<br>
lossless
[APPLE20151021]<br>
none
[APPLE20151021]<br>
progressive
[APPLE20151021]<br>
<br>
_________________________________________________________<br>
Michael Sweet, Senior Printing System Engineer, PWG Chair<br>
<br>
_______________________________________________<br>
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</font></tt><a href="https://www.pwg.org/mailman/listinfo/ipp" target="_blank"><tt><font size="2">https://www.pwg.org/mailman/listinfo/ipp</font></tt></a><tt><font size="2"><br>
</font></tt>
<br></div></div></div></blockquote></div><div><div class="h5"><br><div>
<div><span style="font-family:'Andale Mono'">_________________________________________________________</span><br style="font-family:'Andale Mono'"><span style="font-family:'Andale Mono'">Michael Sweet, Senior Printing System Engineer, PWG Chair</span></div>
</div>
<br></div></div></div></div><br>_______________________________________________<br>
ipp mailing list<br>
<a href="mailto:ipp@pwg.org">ipp@pwg.org</a><br>
<a href="https://www.pwg.org/mailman/listinfo/ipp" rel="noreferrer" target="_blank">https://www.pwg.org/mailman/listinfo/ipp</a><br>
<br></blockquote></div><br></div>