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<TITLE>sane-devel: Re: Xsane-0.55: scan resolution selection (Epson 12</TITLE>
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<META NAME="Author" CONTENT="Oliver Rauch (oliver.rauch@Wolfsburg.DE)">
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<META NAME="Subject" CONTENT="Re: Xsane-0.55: scan resolution selection (Epson 1200S, CVS Sane)">
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<H1>Re: Xsane-0.55: scan resolution selection (Epson 1200S, CVS Sane)</H1>
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<!-- name="Oliver Rauch" -->
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<!-- subject="Re: Xsane-0.55: scan resolution selection (Epson 1200S, CVS Sane)" -->
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<STRONG>From:</STRONG> Oliver Rauch (<A HREF="mailto:oliver.rauch@Wolfsburg.DE?Subject=Re:%20Xsane-0.55:%20scan%20resolution%20selection%20(Epson%201200S,%20CVS%20Sane)&In-Reply-To=<38AED7D4.F2A1A3DF@wolfsburg.de>"><EM>oliver.rauch@Wolfsburg.DE</EM></A>)<BR>
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<STRONG>Date:</STRONG> Sat Feb 19 2000 - 09:50:12 PST
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<P>
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<LI><STRONG>Next message:</STRONG> <A HREF="0226.html">Chris Pinkham: "Re: backend fork/reader-process <-> sane_read"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0224.html">Oliver Rauch: "Re: xsane bugs / suggestions"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0222.html">Karl Heinz Kremer: "Re: Xsane-0.55: scan resolution selection (Epson 1200S, CVS Sane)"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0233.html">Dave Hill: "Re: Xsane-0.55: scan resolution selection (Epson 1200S, CVS Sane)"</A>
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<HR NOSHADE><P>
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<P>
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Karl Heinz Kremer wrote:
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<BR>
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<P><EM>> On Sat, Feb 19, 2000 at 01:23:49PM +0100, Oliver Rauch wrote:
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</EM><BR>
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<EM>> > Hello Karl Heinz,
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</EM><BR>
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<EM>> >
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</EM><BR>
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<EM>> > the sane standard defines only one "resolution" as well known option.
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</EM><BR>
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<EM>> > It does not make sense to have a "preview resolution" option because
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</EM><BR>
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<EM>> > the frontend has to set the correct resolution in each case and like defined
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</EM><BR>
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<EM>> > in the standard xscanimage and xsane do set the option "resolution".
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</EM><BR>
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<EM>> >
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</EM><BR>
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<EM>> > If the preview resolution option is removed from the epson backend
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</EM><BR>
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<EM>> > everything will work fine.
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> OK, so let me see if I understand this correctly: I don't have to set
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</EM><BR>
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<EM>> the preview resolution in the backend, this is done in the frontend.
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</EM><BR>
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<EM>> Therefore it does not make sense to have a "preview resolution" selection.
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</EM><BR>
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<P>It does not matter if you do a preview or a real scan, the option
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<BR>
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"resolution" always defines the resolution.
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<BR>
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<P><EM>> If this assumtion is correct I can remove the preview resolution.
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</EM><BR>
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<EM>> I do however doubt that "everything will work fine" after I remove
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</EM><BR>
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<EM>> that option. You still don't know which resolutions are supported
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</EM><BR>
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<EM>> by the scanner if I implement the resolution option as a range vs.
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</EM><BR>
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<EM>> as a list. So the resolution list will still display a "synthetic"
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</EM><BR>
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<EM>> set of resolutions.
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</EM><BR>
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<P>If the scanner only supports a list of resolutions create a
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<BR>
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Word_List of the type SANE_Int instead of a range.
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<BR>
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(there are already some backends that do so).
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<BR>
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<P>A range only makes sense if the scanner is able to scan
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<BR>
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with almost all resolutions the user can select.
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<BR>
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<P>Bye
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<BR>
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Oliver
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<BR>
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<P><PRE>
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--
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Homepage: <A HREF="http://www.wolfsburg.de/~rauch">http://www.wolfsburg.de/~rauch</A>
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sane-umax: <A HREF="http://www.wolfsburg.de/~rauch/sane/sane-umax.html">http://www.wolfsburg.de/~rauch/sane/sane-umax.html</A>
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xsane: <A HREF="http://www.wolfsburg.de/~rauch/sane/sane-xsane.html">http://www.wolfsburg.de/~rauch/sane/sane-xsane.html</A>
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E-Mail: mailto:<A HREF="mailto:Oliver.Rauch@Wolfsburg.DE?Subject=Re:%20Xsane-0.55:%20scan%20resolution%20selection%20(Epson%201200S,%20CVS%20Sane)&In-Reply-To=<38AED7D4.F2A1A3DF@wolfsburg.de>">Oliver.Rauch@Wolfsburg.DE</A>
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<P><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:%20Xsane-0.55:%20scan%20resolution%20selection%20(Epson%201200S,%20CVS%20Sane)&In-Reply-To=<38AED7D4.F2A1A3DF@wolfsburg.de>">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="0226.html">Chris Pinkham: "Re: backend fork/reader-process <-> sane_read"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0224.html">Oliver Rauch: "Re: xsane bugs / suggestions"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0222.html">Karl Heinz Kremer: "Re: Xsane-0.55: scan resolution selection (Epson 1200S, CVS Sane)"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0233.html">Dave Hill: "Re: Xsane-0.55: scan resolution selection (Epson 1200S, CVS Sane)"</A>
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This archive was generated by <A HREF="http://www.hypermail.org/">hypermail 2b29</A>
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: <EM>Sat Feb 19 2000 - 09:49:27 PST</EM>
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