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<TITLE>sane-devel: Re: TWAIN on Unix ?</TITLE>
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<META NAME="Subject" CONTENT="Re: TWAIN on Unix ?">
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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=<200003161116.MAA23255@zeus.rz.uni-duesseldorf.de>"><EM>becka@rz.uni-duesseldorf.de</EM></A><BR>
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<STRONG>Date:</STRONG> Thu Mar 16 2000 - 03:16:58 PST
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<LI><STRONG>Next message:</STRONG> <A HREF="0154.html">Christoph Hintermüller: "Re: TWAIN on Unix ?"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0152.html">Christian Ordig: "RE: Linux Magazine Scanner story"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0150.html">Mentore Siesto: "Re: TWAIN on Unix ?"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0154.html">Christoph Hintermüller: "Re: TWAIN on Unix ?"</A>
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HI !
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<BR>
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<P><EM>> PR >and keep woundering if it would be a good idea to adapt the TWAIN API
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</EM><BR>
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<EM>> PR >as the high level API for scanners on UNIX.
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</EM><BR>
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<P>Hmm - I am not too convinced about using the TWAIN API for that purpose.
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<BR>
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<P>It is interesting for using SANE on Windows and for quickly porting existing
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<BR>
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applications, but in that case the main porting effort will not be the
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<BR>
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scanning part, but the GUI stuff that makes up the rest of the application.
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<BR>
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<P>Basically I would rather suggest to have a standard way for "remote-
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<BR>
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controlling" SANE frontends, so that an application would be able to
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<BR>
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spawn off any SANE frontend the user likes, tell it to set some options
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<BR>
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to preset values and then get back an image from the frontend - either after
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<BR>
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user interaction or directly.
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<BR>
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<P>This is more or less what TWAIN does, but much cleaner for a Unixish
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<BR>
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environment. TWAIN had to use quite some ugly clutches (single entrypoint,
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<BR>
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piture handed back either in a large memory buffer or in a file, ...) that
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<BR>
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originated form the system environment it was designed to run on.
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<BR>
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<P>Such a standard remote control API could then as well be exploited by a
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<BR>
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TWAIN layer to export a true TWAIN source on Win.
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<BR>
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<P><EM>> PR >We would only need to implement one TWAIN driver - the SANE driver,
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</EM><BR>
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<EM>> PR >and a TWAIN API library to use this.
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</EM><BR>
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<P>Please all interested parties: have a look at the TWAIN specs first, then
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<BR>
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continue discussing it. The old discussion suffered of a lack of knowledge
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<BR>
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about some TWAIN specifics in some points. The specs are openly available.
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<BR>
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Oliver Rauch, with whom I had discussed this topic at great length before
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<BR>
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I stopped active participation in the SANE project, should have pointers
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<BR>
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and copies of old conversations.
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<BR>
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<P>CU, ANdy
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<BR>
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<P><PRE>
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--
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Andreas Beck | Email : <<A HREF="mailto:Andreas.Beck@ggi-project.org?Subject=Re:%20TWAIN%20on%20Unix%20?&In-Reply-To=<200003161116.MAA23255@zeus.rz.uni-duesseldorf.de>">Andreas.Beck@ggi-project.org</A>>
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<P>--
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Source code, list archive, and docs: <A HREF="http://www.mostang.com/sane/">http://www.mostang.com/sane/</A>
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To unsubscribe: echo unsubscribe sane-devel | mail <A HREF="mailto:majordomo@mostang.com?Subject=Re:%20TWAIN%20on%20Unix%20?&In-Reply-To=<200003161116.MAA23255@zeus.rz.uni-duesseldorf.de>">majordomo@mostang.com</A>
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</PRE>
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<LI><STRONG>Next message:</STRONG> <A HREF="0154.html">Christoph Hintermüller: "Re: TWAIN on Unix ?"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0152.html">Christian Ordig: "RE: Linux Magazine Scanner story"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0150.html">Mentore Siesto: "Re: TWAIN on Unix ?"</A>
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This archive was generated by <A HREF="http://www.hypermail.org/">hypermail 2b29</A>
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