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<TITLE>sane-devel: Re: [BUG] Epson 1640SU, xsane preview problem</TITLE>
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<META NAME="Author" CONTENT="mh (crapsite@gmx.net)">
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<META NAME="Subject" CONTENT="Re: [BUG] Epson 1640SU, xsane preview problem">
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<H1>Re: [BUG] Epson 1640SU, xsane preview problem</H1>
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<!-- received="Thu May 24 01:53:13 2001" -->
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<!-- isoreceived="20010524085313" -->
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<!-- sent="Thu, 24 May 2001 09:46:05 +0200" -->
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<!-- name="mh" -->
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<!-- email="crapsite@gmx.net" -->
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<!-- subject="Re: [BUG] Epson 1640SU, xsane preview problem" -->
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<STRONG>From:</STRONG> mh (<A HREF="mailto:crapsite@gmx.net?Subject=Re:%20[BUG]%20Epson%201640SU,%20xsane%20preview%20problem&In-Reply-To=<01052410103500.00606@slowcrap>"><EM>crapsite@gmx.net</EM></A>)<BR>
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<STRONG>Date:</STRONG> Thu May 24 2001 - 00:46:05 PDT
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<P>
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<LI><STRONG>Next message:</STRONG> <A HREF="0320.html">Henning Meier-Geinitz: "Re: Canon 620S conf file"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0318.html">Phil Cummins: "portable scanner recommendations?"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0312.html">Oliver Rauch: "Re: [BUG] Epson 1640SU, xsane preview problem"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0321.html">Oliver Rauch: "Re: [BUG] Epson 1640SU, xsane preview problem"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0316.html">Oliver Rauch: "Re: [BUG] Epson 1640SU, xsane preview problem"</A>
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<LI><STRONG>Reply:</STRONG> <A HREF="0321.html">Oliver Rauch: "Re: [BUG] Epson 1640SU, xsane preview problem"</A>
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<HR NOSHADE><P>
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<!-- body="start" -->
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<P>
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Oliver Rauch, Mit, 23 Mai 2001 :
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<BR>
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<EM>> Jean-Luc Coulon wrote:
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> > 1 - If I do a preview with the paper size set to "full size", all is
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</EM><BR>
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<EM>> > right :
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</EM><BR>
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<EM>> > all the pictures dislayed in the preview window are correct in regard of
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</EM><BR>
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<EM>> > the position of the document on the bed.
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</EM><BR>
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<P><EM>> > 2 - If now, I switch to an other document size (i.e. DIN A4 port.), the
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</EM><BR>
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<EM>> > first preview is ok and the following ones are not : if I move the
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</EM><BR>
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<EM>> > document, the displayed picture is always the one of the first preview.
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</EM><BR>
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<EM>> > In this case, while the head is moving, the picture appears correctly
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</EM><BR>
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<EM>> > and jump to the previous place when the scanner head go back to its rest
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</EM><BR>
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<EM>> > position.
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> I suggest you enable debug output:
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</EM><BR>
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<EM>> export XSANE_DEBUG=20
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</EM><BR>
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<EM>> export SANE_DEBUG_EPSON=128
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</EM><BR>
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<EM>> and try to find out what happens.
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</EM><BR>
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<P>Hi Oliver,
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<BR>
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just to let you know, I can reproduce this with the plustek backend too.
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<BR>
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I was browsing through your code this morning, and I think, that the following
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<BR>
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looks suspect:
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<BR>
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In xsane-preview.c (around line 2175/ version 0.76)
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<BR>
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/* See whether there is a saved preview and load it if present: */
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<BR>
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for(level = 2; level >= 0; level--)
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<BR>
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{
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<BR>
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//Problem:
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<BR>
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//If you did a fullsize scan and afterwards e.g. an A5 scan,
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<BR>
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//p->filename[0] holds a valid filename (== the name of the
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<BR>
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//fullsize preview); therefore the for loop will always count down
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<BR>
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//to 0 and the fullsize preview is reloaded.
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<BR>
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if (p->filename[level])
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<BR>
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{
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<BR>
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in = fopen(p->filename[level], "rb"); /* read binary (b for win32) */
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<BR>
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if (in)
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<BR>
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{
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<BR>
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quality = preview_restore_image_from_file(p, in, quality);
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<BR>
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fclose(in);
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<BR>
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}
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<BR>
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}
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<BR>
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}
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<BR>
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<P>I don't know, whether this is correct, but may be you can take a look at it.
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<BR>
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<P>Michael
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<BR>
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<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:%20[BUG]%20Epson%201640SU,%20xsane%20preview%20problem&In-Reply-To=<01052410103500.00606@slowcrap>">majordomo@mostang.com</A>
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</PRE>
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<LI><STRONG>Next message:</STRONG> <A HREF="0320.html">Henning Meier-Geinitz: "Re: Canon 620S conf file"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0318.html">Phil Cummins: "portable scanner recommendations?"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0312.html">Oliver Rauch: "Re: [BUG] Epson 1640SU, xsane preview problem"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0321.html">Oliver Rauch: "Re: [BUG] Epson 1640SU, xsane preview problem"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0316.html">Oliver Rauch: "Re: [BUG] Epson 1640SU, xsane preview problem"</A>
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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>Thu May 24 2001 - 01:55:19 PDT</EM>
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