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<TITLE>sane-devel: Re: What is interfering during xscanimage/xsane?</TITLE>
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<META NAME="Author" CONTENT="Christian Nassau (nassau@math.uni-frankfurt.de)">
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<META NAME="Subject" CONTENT="Re: What is interfering during xscanimage/xsane?">
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<H1>Re: What is interfering during xscanimage/xsane?</H1>
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<!-- name="Christian Nassau" -->
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<STRONG>From:</STRONG> Christian Nassau (<A HREF="mailto:nassau@math.uni-frankfurt.de?Subject=Re:%20What%20is%20interfering%20during%20xscanimage/xsane?&In-Reply-To=<200101101028.LAA16700@siegel.math.uni-frankfurt.de>"><EM>nassau@math.uni-frankfurt.de</EM></A>)<BR>
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<STRONG>Date:</STRONG> Wed Jan 10 2001 - 02:28:18 PST
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<LI><STRONG>Next message:</STRONG> <A HREF="0111.html">Oliver.Neukum@lrz.uni-muenchen.de: "Re: help - hp 5300c"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0109.html">Christian Nassau: "snapscan"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0065.html">Klaus-Peter Schrage: "Re: What is interfering during xscanimage/xsane?"</A>
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<EM>> - scanimage works fine with my Agfa SnapScan 1212
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</EM><BR>
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<EM>> - xscanimage/xsane give a preview looking somewhat shred when in color mode
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</EM><BR>
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<EM>> - the scanning process (color) with xscanimage does't even finish, the
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</EM><BR>
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<EM>> "progress indicator" seems to be frozen
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</EM><BR>
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<P>This is just a guess: one difference between scanimage and
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<BR>
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xscanimage is that xscanimage uses the backend's get_select_fd()
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<BR>
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function. You could try to force snapscan's get_select_fd() to
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<BR>
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always return SANE_STATUS_UNSUPPORTED, and see if it works then.
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<BR>
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<P>(snapscan's get_select_fd returns the file descriptor fd of a pipe
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<BR>
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which is also used to transfer the image data. If a frontend
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<BR>
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tried to test readability using something like
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<BR>
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<P> try to get character from fd, the put it back
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<BR>
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<P>data would be lost, the image presumably sheared.)
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<BR>
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<P><P><PRE>
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--
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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:%20What%20is%20interfering%20during%20xscanimage/xsane?&In-Reply-To=<200101101028.LAA16700@siegel.math.uni-frankfurt.de>">majordomo@mostang.com</A>
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</PRE>
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<LI><STRONG>Next message:</STRONG> <A HREF="0111.html">Oliver.Neukum@lrz.uni-muenchen.de: "Re: help - hp 5300c"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0109.html">Christian Nassau: "snapscan"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0065.html">Klaus-Peter Schrage: "Re: What is interfering during xscanimage/xsane?"</A>
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This archive was generated by <A HREF="http://www.hypermail.org/">hypermail 2b29</A>
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