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<TITLE>sane-devel: Re: Twain interface</TITLE>
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<META NAME="Author" CONTENT="Jonathan Buzzard (jonathan@buzzard.org.uk)">
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<META NAME="Subject" CONTENT="Re: Twain interface">
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<H1>Re: Twain interface</H1>
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<!-- received="Wed Apr 18 05:26:31 2001" -->
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<!-- name="Jonathan Buzzard" -->
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<STRONG>From:</STRONG> Jonathan Buzzard (<A HREF="mailto:jonathan@buzzard.org.uk?Subject=Re:%20Twain%20interface&In-Reply-To=<E14ppdS-0000J9-00@happy.buzzard.org.uk>"><EM>jonathan@buzzard.org.uk</EM></A>)<BR>
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<STRONG>Date:</STRONG> Wed Apr 18 2001 - 03:56:34 PDT
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<LI><STRONG>Next message:</STRONG> <A HREF="0172.html">Jeff Volckaert: "Qs about scanners with ADF which work under sane"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0170.html">Sebastien Sable: "Re: Twain interface"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0170.html">Sebastien Sable: "Re: Twain interface"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0174.html">Karsten Festag: "Re: Twain interface"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0168.html">Tom Martone: "Re: Newbie question: High-speed scanners?"</A>
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<A HREF="mailto:Sebastien.Sable@snv.jussieu.fr?Subject=Re:%20Twain%20interface&In-Reply-To=<E14ppdS-0000J9-00@happy.buzzard.org.uk>">Sebastien.Sable@snv.jussieu.fr</A> said:
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<BR>
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<EM>> It works well with wine and my scanner driver was working under wine
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</EM><BR>
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<EM>> as well, so you just have to get wine source code, modify the ASPI
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</EM><BR>
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<EM>> driver so it logs every SCSI command to a buffer, then use this
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</EM><BR>
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<EM>> utility to launch every twain command from the driver. And there you
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</EM><BR>
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<EM>> are with a nice log of the protocol of your scanner. It is not very
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</EM><BR>
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<EM>> readable, but when you don't have anything else, well...
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</EM><BR>
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<P>This may well be of interest to all those using the USB sniff program under
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<BR>
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Windows to reverse engineer their scanners as well.
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<BR>
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<P>The interesting thing is that the difficulty in reverse engineering a
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<BR>
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scanner driver protocol appears to be directly related to the difficulty
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<BR>
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in sniffing the protocol. For parallel port scanners this was always hard
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<BR>
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as they tend to hit the hardware directly. The shift to USB, and the
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<BR>
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development of the USB sniff program for Windows has made sniffing the
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<BR>
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protocol for USB scanners in comparison trivial. As a result SANE backends
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<BR>
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have started popping up.
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<BR>
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<P>JAB.
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<BR>
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<P><PRE>
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--
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Jonathan A. Buzzard Email: <A HREF="mailto:jonathan@buzzard.org.uk?Subject=Re:%20Twain%20interface&In-Reply-To=<E14ppdS-0000J9-00@happy.buzzard.org.uk>">jonathan@buzzard.org.uk</A>
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Northumberland, United Kingdom. Tel: +44(0)1661-832195
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<P><P><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%20interface&In-Reply-To=<E14ppdS-0000J9-00@happy.buzzard.org.uk>">majordomo@mostang.com</A>
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</PRE>
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<!-- next="start" -->
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<LI><STRONG>Next message:</STRONG> <A HREF="0172.html">Jeff Volckaert: "Qs about scanners with ADF which work under sane"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0170.html">Sebastien Sable: "Re: Twain interface"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0170.html">Sebastien Sable: "Re: Twain interface"</A>
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<!-- nextthread="start" -->
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0174.html">Karsten Festag: "Re: Twain interface"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0168.html">Tom Martone: "Re: Newbie question: High-speed scanners?"</A>
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<SMALL>
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<EM>
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This archive was generated by <A HREF="http://www.hypermail.org/">hypermail 2b29</A>
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: <EM>Wed Apr 18 2001 - 05:27:16 PDT</EM>
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