sane-project-website/old-archive/1999-08/0234.html

81 wiersze
3.7 KiB
HTML

This file contains invisible Unicode characters!

This file contains invisible Unicode characters that may be processed differently from what appears below. If your use case is intentional and legitimate, you can safely ignore this warning. Use the Escape button to reveal hidden characters.

<!-- received="Thu Aug 19 03:59:58 1999 PDT" -->
<!-- sent="Thu, 19 Aug 1999 06:20:26 -0400" -->
<!-- name="Tom Martone" -->
<!-- email="tom@martoneconsulting.com" -->
<!-- subject="Re: SANE V2" -->
<!-- id="" -->
<!-- inreplyto="SANE V2" -->
<title>sane-devel: Re: SANE V2</title>
<h1>Re: SANE V2</h1>
<b>Tom Martone</b> (<a href="mailto:tom@martoneconsulting.com"><i>tom@martoneconsulting.com</i></a>)<br>
<i>Thu, 19 Aug 1999 06:20:26 -0400</i>
<p>
<ul>
<li> <b>Messages sorted by:</b> <a href="date.html#234">[ date ]</a><a href="index.html#234">[ thread ]</a><a href="subject.html#234">[ subject ]</a><a href="author.html#234">[ author ]</a>
<!-- next="start" -->
<li> <b>Next message:</b> <a href="0235.html">Oliver Rauch: "Re: sane-umax"</a>
<li> <b>Previous message:</b> <a href="0233.html">Sebastian Ahrens: "Re: sane-umax"</a>
<!-- nextthread="start" -->
<li> <b>Next in thread:</b> <a href="0290.html">Oliver Rauch: "Re: SANE V2"</a>
<!-- reply="end" -->
</ul>
<!-- body="start" -->
Oliver Rauch wrote:<br>
<i>&gt; </i><br>
<i>&gt; <a href="mailto:becka@rz.uni-duesseldorf.de">becka@rz.uni-duesseldorf.de</a> wrote:</i><br>
<i>&gt; </i><br>
<i>&gt; &gt; O.K. - if it really really really pleases all people here, we can add that</i><br>
<i>&gt; &gt; types. But as said, I am afraid of opening a neverending growth of the</i><br>
<i>&gt; &gt; frame types, which is very bad regarding compatibility and cannot be easily</i><br>
<i>&gt; &gt; extended by just editing a textfile or something.</i><br>
<i>&gt; </i><br>
<i>&gt; Hey: does anyone know what you suggested?</i><br>
<i>&gt; Do you really want to get a sane standard with 1000 pages?</i><br>
Actually, by adding the frametypes that have been discussed (excluding<br>
the MIME one), the standard would grow by about a page or two. <br>
<p>
Here's a piece of the language from that sane standard that addresses<br>
image formats and mentioned that "the interface has been defined carefully<br>
to allow extending it in the future". <br>
<p>
3.2 Image Data Format<br>
<p>
Arguably the most important aspect of an image acquisition system <br>
is how images are represented. The SANE approach is to define a <br>
simple yet powerful representation that is sufficient for vast <br>
majority of applications and devices. While the representation is <br>
simple, the interface has been defined carefully to allow extending <br>
it in the future without breaking backwards compatibility. Thus, <br>
it will be possible to accommodate future applications or devices <br>
that were not anticipated at the time this standard was created. <br>
<p>
Although it doesn't specifically say so, it seems to me that one<br>
mechanism put in place to allow extension is the frametype. And<br>
there certainly is no mention of the magical all encompassing mime<br>
frametype arriving to save the day.<br>
<p>
With the frametypes _JFIF, _JBIG, _G31D, _G32D, and _G42D what we are<br>
trying to do is "accommodate future applications or devices that were<br>
not anticipated at the time this standard was created" in the most<br>
straighforward and painless manner. <br>
<p>
Why is the process of getting there so painful?<br>
<p>
Tom Martone<br>
<p>
<pre>
--
Source code, list archive, and docs: <a href="http://www.mostang.com/sane/">http://www.mostang.com/sane/</a>
To unsubscribe: echo unsubscribe sane-devel | mail <a href="mailto:majordomo@mostang.com">majordomo@mostang.com</a>
</pre>
<!-- body="end" -->
<p>
<ul>
<!-- next="start" -->
<li> <b>Next message:</b> <a href="0235.html">Oliver Rauch: "Re: sane-umax"</a>
<li> <b>Previous message:</b> <a href="0233.html">Sebastian Ahrens: "Re: sane-umax"</a>
<!-- nextthread="start" -->
<li> <b>Next in thread:</b> <a href="0290.html">Oliver Rauch: "Re: SANE V2"</a>
<!-- reply="end" -->
</ul>