kopia lustrzana https://gitlab.com/sane-project/website
72 wiersze
3.3 KiB
HTML
72 wiersze
3.3 KiB
HTML
<!-- received="Wed Jan 28 21:24:07 1998 PST" -->
|
|
<!-- sent="Wed, 28 Jan 1998 21:24:06 -0800" -->
|
|
<!-- name="David Mosberger-Tang" -->
|
|
<!-- email="David.Mosberger@acm.org" -->
|
|
<!-- subject="Re: AppleScanner(s) Support" -->
|
|
<!-- id="199801290524.VAA08895@panda.mostang.com" -->
|
|
<!-- inreplyto="9801281527.AA25060@isosun.ariadne-t.gr" -->
|
|
<title>sane-devel: Re: AppleScanner(s) Support</title>
|
|
<h1>Re: AppleScanner(s) Support</h1>
|
|
<b>David Mosberger-Tang</b> (<a href="mailto:David.Mosberger@acm.org"><i>David.Mosberger@acm.org</i></a>)<br>
|
|
<i>Wed, 28 Jan 1998 21:24:06 -0800</i>
|
|
<p>
|
|
<ul>
|
|
<li> <b>Messages sorted by:</b> <a href="date.html#236">[ date ]</a><a href="index.html#236">[ thread ]</a><a href="subject.html#236">[ subject ]</a><a href="author.html#236">[ author ]</a>
|
|
<!-- next="start" -->
|
|
<li> <b>Next message:</b> <a href="0237.html">David Mosberger-Tang: "Re: SANE works on SPARCLinux!"</a>
|
|
<li> <b>Previous message:</b> <a href="0235.html">Matto Marjanovic: "What a backlog... (microtek)"</a>
|
|
<li> <b>In reply to:</b> <a href="0227.html">Milon Firikis: "AppleScanner(s) Support"</a>
|
|
<!-- nextthread="start" -->
|
|
<!-- reply="end" -->
|
|
</ul>
|
|
<!-- body="start" -->
|
|
<i>>>>>> On Wed, 28 Jan 98 17:27:18 EET, Milon Firikis <<a href="mailto:milonf@isosun.ariadne-t.gr">milonf@isosun.ariadne-t.gr</a>> said:</i><br>
|
|
<p>
|
|
Milon> What I want to announce is The "Apple Scanner(s) pre Alpha"<br>
|
|
Milon> support patch! A premature version of the backend is allmost<br>
|
|
Milon> ready:<br>
|
|
<p>
|
|
Milon> I will post it on this list about Monday...<br>
|
|
<p>
|
|
Cool. May I ask what OS you're doing this on? MkLinux?<br>
|
|
<p>
|
|
Milon> Question: AppleScanner has a gray16 mode. I am capable of<br>
|
|
Milon> scanning in binary modes (1bit) but I am having some problems<br>
|
|
Milon> with this (4bit) mode. scanimage segfaults? What should I<br>
|
|
Milon> do? I could built an internal buffer so that backend would<br>
|
|
Milon> report 8bit depth to the frontends. Is this the right thing<br>
|
|
Milon> to do? or should the frontends be aware for such "weird"<br>
|
|
Milon> formats?<br>
|
|
<p>
|
|
Yes, the SANE API restricts bit depths to be a multiple of 8 bits<br>
|
|
(with the notable exception of 1 bit depth). So you'd have to expand<br>
|
|
& scale the 4 bit nibbles into 8 bit bytes. If Andy is reading this<br>
|
|
mail, he'll be sure to point out that you should do the scaling with<br>
|
|
something like this:<br>
|
|
<p>
|
|
byte = (nibble << 4) | nibble;<br>
|
|
<p>
|
|
This makes sure the smallest intensity maps into 0x00 and the largest<br>
|
|
intensity maps to 0xff (i.e., there is no "compression" in the output<br>
|
|
range).<br>
|
|
<p>
|
|
Right, Andy? ;-)<br>
|
|
<p>
|
|
--david<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="0237.html">David Mosberger-Tang: "Re: SANE works on SPARCLinux!"</a>
|
|
<li> <b>Previous message:</b> <a href="0235.html">Matto Marjanovic: "What a backlog... (microtek)"</a>
|
|
<li> <b>In reply to:</b> <a href="0227.html">Milon Firikis: "AppleScanner(s) Support"</a>
|
|
<!-- nextthread="start" -->
|
|
<!-- reply="end" -->
|
|
</ul>
|