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<H1>Re: TWAIN on Unix ?</H1>
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<STRONG>From:</STRONG> <A HREF="mailto:becka@rz.uni-duesseldorf.de?Subject=Re:%20TWAIN%20on%20Unix%20?&In-Reply-To=&lt;200003161116.MAA23255@zeus.rz.uni-duesseldorf.de&gt;"><EM>becka@rz.uni-duesseldorf.de</EM></A><BR>
<STRONG>Date:</STRONG> Thu Mar 16 2000 - 03:16:58 PST
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HI !
<BR>
<P><EM>&gt; PR &gt;and keep woundering if it would be a good idea to adapt the TWAIN API
</EM><BR>
<EM>&gt; PR &gt;as the high level API for scanners on UNIX.
</EM><BR>
<P>Hmm - I am not too convinced about using the TWAIN API for that purpose.
<BR>
<P>It is interesting for using SANE on Windows and for quickly porting existing
<BR>
applications, but in that case the main porting effort will not be the
<BR>
scanning part, but the GUI stuff that makes up the rest of the application.
<BR>
<P>Basically I would rather suggest to have a standard way for &quot;remote-
<BR>
controlling&quot; SANE frontends, so that an application would be able to
<BR>
spawn off any SANE frontend the user likes, tell it to set some options
<BR>
to preset values and then get back an image from the frontend - either after
<BR>
user interaction or directly.
<BR>
<P>This is more or less what TWAIN does, but much cleaner for a Unixish
<BR>
environment. TWAIN had to use quite some ugly clutches (single entrypoint,
<BR>
piture handed back either in a large memory buffer or in a file, ...) that
<BR>
originated form the system environment it was designed to run on.
<BR>
<P>Such a standard remote control API could then as well be exploited by a
<BR>
TWAIN layer to export a true TWAIN source on Win.
<BR>
<P><EM>&gt; PR &gt;We would only need to implement one TWAIN driver - the SANE driver,
</EM><BR>
<EM>&gt; PR &gt;and a TWAIN API library to use this.
</EM><BR>
<P>Please all interested parties: have a look at the TWAIN specs first, then
<BR>
continue discussing it. The old discussion suffered of a lack of knowledge
<BR>
about some TWAIN specifics in some points. The specs are openly available.
<BR>
Oliver Rauch, with whom I had discussed this topic at great length before
<BR>
I stopped active participation in the SANE project, should have pointers
<BR>
and copies of old conversations.
<BR>
<P>CU, ANdy
<BR>
<P><PRE>
--
Andreas Beck | Email : &lt;<A HREF="mailto:Andreas.Beck@ggi-project.org?Subject=Re:%20TWAIN%20on%20Unix%20?&In-Reply-To=&lt;200003161116.MAA23255@zeus.rz.uni-duesseldorf.de&gt;">Andreas.Beck@ggi-project.org</A>&gt;
<P>--
Source code, list archive, and docs: <A HREF="http://www.mostang.com/sane/">http://www.mostang.com/sane/</A>
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