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<TITLE>sane-devel: Re: Snapscan.... Help! (a few extra data)</TITLE>
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<META NAME="Author" CONTENT="John Coppens (jcoppens@linux2.uccor.edu.ar)">
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<META NAME="Subject" CONTENT="Re: Snapscan.... Help! (a few extra data)">
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<H1>Re: Snapscan.... Help! (a few extra data)</H1>
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<!-- received="Wed Dec 20 06:58:06 2000" -->
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<STRONG>From:</STRONG> John Coppens (<A HREF="mailto:jcoppens@linux2.uccor.edu.ar?Subject=Re:%20Snapscan....%20Help!%20(a%20few%20extra%20data)&In-Reply-To=<200012201511.MAA10012@linux2.uccor.edu.ar>"><EM>jcoppens@linux2.uccor.edu.ar</EM></A>)<BR>
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<STRONG>Date:</STRONG> Wed Dec 20 2000 - 07:12:02 PST
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<P>
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<LI><STRONG>Next message:</STRONG> <A HREF="0238.html">Oliver Rauch: "Re: xsane-win32 0.67 and copy mode works"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0236.html">John Coppens: "Re: Snapscan.... Help!"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0233.html">cbagwell@sprynet.com: "Re: Re: Snapscan.... Help!"</A>
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<LI><STRONG>Reply:</STRONG> <A HREF="0239.html">Steve Underwood: "Re: Snapscan.... Help! (a few extra data)"</A>
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<P>
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Hi Chris.
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<BR>
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<P>A few (possibly) hints...
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<BR>
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<P>I've been checking the debug log and found a few strange things.
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<BR>
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<P>- Says buffer is size = 31725 bytes, 55 lines. At 1269 bytes/lines this
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<BR>
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can't be (should be 25). I checked the source code and found:
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<BR>
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<P> DBG (DL_DATA_TRACE,
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<BR>
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"%s: effective buffer size = %lu bytes, %lu lines\n",
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<BR>
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me,
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<BR>
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(u_long) pss->buf_sz,
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<BR>
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(u_long) (pss->buf_sz ? pss->buf_sz / pss->lines : 0));
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<BR>
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<P> I suppose this should be / pss->bytes_per_line
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<BR>
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<P>- A bit before that, it says : set_window: bits-per-pixel set to 30
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<BR>
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<P> How can this result in 3 bytes/pixel afterwards? I couldn't find
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<BR>
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how the extra 2 bits (*3) are sent... Are they packed in another block?
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<BR>
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<P>- The 'sleep' button doesn't work after using xsane... The light does
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<BR>
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switch off after some 10-15 mins.
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<BR>
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<P>- Changing the buffer size gives a Segmentation error (when scanning
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<BR>
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fullsize. Preview works though). Tested size was 33000.
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<BR>
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<P>Cheers
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<BR>
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<P>John
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<BR>
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<P>On Tue, 19 Dec 2000 12:36:03 -0500 <A HREF="mailto:cbagwell@sprynet.com?Subject=Re:%20Snapscan....%20Help!%20(a%20few%20extra%20data)&In-Reply-To=<200012201511.MAA10012@linux2.uccor.edu.ar>">cbagwell@sprynet.com</A> wrote/El dddd> Have you downloaded and installed the snapscan driver from
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<BR>
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<EM>> sourceforge? It corrects a few known color-scanning issues.
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</EM><BR>
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<EM>> <A HREF="http://sourceforge.net/projects/snapscan">http://sourceforge.net/projects/snapscan</A>
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> Also, you might try changing the snapscan.h file to different
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</EM><BR>
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<EM>> types of scanners for your 1212U (ie, tell its a SNAPSCAN300
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</EM><BR>
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<EM>> or a SNAPSCAN600 or a PRISA640, etc).
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> Chris
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</EM><BR>
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<PRE>
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--
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<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:%20Snapscan....%20Help!%20(a%20few%20extra%20data)&In-Reply-To=<200012201511.MAA10012@linux2.uccor.edu.ar>">majordomo@mostang.com</A>
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</PRE>
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<LI><STRONG>Next message:</STRONG> <A HREF="0238.html">Oliver Rauch: "Re: xsane-win32 0.67 and copy mode works"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0236.html">John Coppens: "Re: Snapscan.... Help!"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0233.html">cbagwell@sprynet.com: "Re: Re: Snapscan.... Help!"</A>
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<LI><STRONG>Reply:</STRONG> <A HREF="0239.html">Steve Underwood: "Re: Snapscan.... Help! (a few extra data)"</A>
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This archive was generated by <A HREF="http://www.hypermail.org/">hypermail 2b29</A>
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: <EM>Wed Dec 20 2000 - 07:01:34 PST</EM>
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