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<TITLE>sane-devel: Re: Problems with Prisa 620S [snapscan] + BUG in xs</TITLE>
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<META NAME="Author" CONTENT="Ben Stanley (bds02@uow.edu.au)">
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<META NAME="Subject" CONTENT="Re: Problems with Prisa 620S [snapscan] + BUG in xsane 0.76">
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<H1>Re: Problems with Prisa 620S [snapscan] + BUG in xsane 0.76</H1>
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<!-- received="Tue May 22 15:56:07 2001" -->
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<!-- sent="Wed, 23 May 2001 08:56:52 +1000" -->
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<!-- isosent="20010522225652" -->
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<!-- name="Ben Stanley" -->
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<!-- email="bds02@uow.edu.au" -->
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<!-- subject="Re: Problems with Prisa 620S [snapscan] + BUG in xsane 0.76" -->
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<!-- id="3B0AEEB4.2030603@uow.edu.au" -->
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<STRONG>From:</STRONG> Ben Stanley (<A HREF="mailto:bds02@uow.edu.au?Subject=Re:%20Problems%20with%20Prisa%20620S%20[snapscan]%20%2B%20BUG%20in%20xsane%200.76&In-Reply-To=<3B0AEEB4.2030603@uow.edu.au>"><EM>bds02@uow.edu.au</EM></A>)<BR>
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<STRONG>Date:</STRONG> Tue May 22 2001 - 15:56:52 PDT
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<P>
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<LI><STRONG>Next message:</STRONG> <A HREF="0296.html">Mick Barry: "Re: Q: windows port"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0294.html">Ben Stanley: "Re: Problems with Prisa 620S [snapscan] + BUG in xsane 0.76"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0287.html">Oliver Rauch: "Re: Problems with Prisa 620S [snapscan] + BUG in xsane 0.76"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0307.html">Oliver Rauch: "Re: Problems with Prisa 620S [snapscan] + BUG in xsane 0.76"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0288.html">Oliver Rauch: "Re: Problems with Prisa 620S [snapscan] + BUG in xsane 0.76"</A>
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<LI><STRONG>Reply:</STRONG> <A HREF="0307.html">Oliver Rauch: "Re: Problems with Prisa 620S [snapscan] + BUG in xsane 0.76"</A>
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<HR NOSHADE><P>
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<P>
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Oliver Rauch wrote:
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<BR>
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<P><EM>>Ben Stanley wrote:
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>>>SANE_DEBUG_SNAPSCAN=255 ./saned -d255
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</EM><BR>
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<EM>>>
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</EM><BR>
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<EM>>>and redirecting the output. I checked the size inquiry before the scan
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</EM><BR>
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<EM>>>data was read, and from the get_parameters call which occurs just after
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</EM><BR>
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<EM>>>the scan started. It seems that these two are not returning the same
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</EM><BR>
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<EM>>>number of lines. should they be? I can post log output if you want.
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</EM><BR>
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<EM>>>
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>>Hi Ben,
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>>I took a short look at the snapscan source. There are two things:
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</EM><BR>
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<EM>>1) I can find out from which time the scanning related values
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</EM><BR>
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<EM>>are set (not the guessed ones)
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</EM><BR>
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<EM>>2) it is possible (looks a bit like that) the the backend does
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</EM><BR>
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<EM>>not respond the complete lines in param.lines but the
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</EM><BR>
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<EM>>remainig lines until the end of the scan. That would be a big bug.
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>>Can you find out about that, e.g. by adding a call to
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</EM><BR>
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<EM>>sane_get_parameters in xsane after sane_read ?!
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</EM><BR>
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<EM>>
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</EM><BR>
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Here you go:
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<BR>
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<P>[xsane] preview_scan_start
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<BR>
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[xsane] xsane_clear_histogram
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<BR>
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[xsane] xsane_clear_histogram
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<BR>
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[xsane] xsane_set_sensitivity
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<BR>
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[xsane] preview_expose_event_handler_start
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<BR>
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[xsane] preview_draw_selection
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<BR>
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[xsane] preview_expose_event_handler_end
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<BR>
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[xsane] preview_draw_selection
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<BR>
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[xsane] preview_draw_rect [0.75 0.75 211.23 122.96]
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<BR>
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[xsane] preview_transform_coordinates_device_to_window
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<BR>
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[xsane] preview_get_scale_device_to_window: scale = 1.300926, 1.300926
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<BR>
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[xsane] preview[0.75 0.75 211.23 122.96] -> window[0.98 0.98 274.79 159.97]
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<BR>
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[xsane] preview_get_memory
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<BR>
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[xsane] preview_read_image_data
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<BR>
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[xsane] scan lines after sane_read: 843.[xsane] scan width after
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<BR>
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sane_read: 637.[xsane] preview_increment_image_y
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<BR>
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[xsane] preview_increment_image_y
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<BR>
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[xsane] preview_increment_image_y
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<BR>
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[xsane] preview_increment_image_y
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<BR>
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[xsane] scan lines after sane_read: 838.[xsane] scan width after
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<BR>
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sane_read: 637.[xsane] preview_increment_image_y
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<BR>
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[xsane] preview_increment_image_y
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<BR>
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[xsane] preview_increment_image_y
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<BR>
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[xsane] preview_increment_image_y
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<BR>
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[xsane] scan lines after sane_read: 834.[xsane] scan width after
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<BR>
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sane_read: 637.[xsane] preview_increment_image_y
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<BR>
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[xsane] preview_increment_image_y
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<BR>
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[xsane] preview_increment_image_y
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<BR>
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[xsane] preview_increment_image_y
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<BR>
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[xsane] scan lines after sane_read: 830.[xsane] scan width after
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<BR>
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sane_read: 637.[xsane] preview_increment_image_y
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<BR>
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[xsane] preview_increment_image_y
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<BR>
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[xsane] preview_increment_image_y
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<BR>
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[xsane] preview_increment_image_y
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<BR>
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[xsane] preview_increment_image_y
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<BR>
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<P>Looks like your theory is confirmed. Not sure I know what to do about it
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<BR>
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yet... I mean, I know the backend has to be fixed, but I'm not in a
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<BR>
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position to be able to do it yet :-).
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<BR>
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<P>Ben.
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<BR>
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<P><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:%20Problems%20with%20Prisa%20620S%20[snapscan]%20%2B%20BUG%20in%20xsane%200.76&In-Reply-To=<3B0AEEB4.2030603@uow.edu.au>">majordomo@mostang.com</A>
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</PRE>
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<P><!-- body="end" -->
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<HR NOSHADE>
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<UL>
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<!-- next="start" -->
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<LI><STRONG>Next message:</STRONG> <A HREF="0296.html">Mick Barry: "Re: Q: windows port"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0294.html">Ben Stanley: "Re: Problems with Prisa 620S [snapscan] + BUG in xsane 0.76"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0287.html">Oliver Rauch: "Re: Problems with Prisa 620S [snapscan] + BUG in xsane 0.76"</A>
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<!-- nextthread="start" -->
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0307.html">Oliver Rauch: "Re: Problems with Prisa 620S [snapscan] + BUG in xsane 0.76"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0288.html">Oliver Rauch: "Re: Problems with Prisa 620S [snapscan] + BUG in xsane 0.76"</A>
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<LI><STRONG>Reply:</STRONG> <A HREF="0307.html">Oliver Rauch: "Re: Problems with Prisa 620S [snapscan] + BUG in xsane 0.76"</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>Tue May 22 2001 - 15:56:52 PDT</EM>
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</EM>
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