[sane-devel] Avision AV8300 Support for 11x17in Document Size

[Tom Garvin]

Correct.  That was my first attempt to address the issue, but I backed
out these changes (I rebuilt/installed from a fresh backend archive)
when you're solution (adding "option force-a3" to avision.conf) worked
so well.  That was all on my development workstation.

Now I'm on a new system, and I'm experiencing the issue I describe
below.  I believe that I have clean SANE installations (I have removed
all known files and re-done the whole make install process from scratch
for frontends and backends).  On this new system, everything else works
great except for this scan height issue on the flatbed.

Before adding the "option force-a3" line in the
/usr/local/etc/sane.d/avision.conf file, 'scanadf -h' gives me:

...
  Geometry:
    -l 0..297mm [0]
        Top-left x position of scan area.
    -t 0..420mm [0]
        Top-left y position of scan area.
    -x 0..297mm [297]
        Width of scan-area.
    -y 0..420mm [420]
        Height of scan-area.

After adding the option, I get:

...
  Geometry:
    -l 0..299mm [0]
        Top-left x position of scan area.
    -t 0..419mm [0]
        Top-left y position of scan area.
    -x 0..299mm [299]
        Width of scan-area.
    -y 0..419mm [419]
        Height of scan-area.

Weird, eh?  You can see that it increases max width by 2, yet decreases
height by 1.  Just wondering what other variable is influencing this.

-----Original Message-----
From: m. allan noah [mailto:kitno455 at gmail.com] 
Sent: Monday, May 21, 2007 9:10 AM
To: Tom Garvin
Cc: sane-devel at lists.alioth.debian.org
Subject: Re: [sane-devel] Avision AV8300 Support for 11x17in Document
Size

in an older mail in this thread (quoted below) you said:

I changed the value of A3_Y_RANGE (line 1419 of avision.c) from 16.5
to 17, recompiled and reinstalled...

allan

On 5/21/07, Tom Garvin <tomgarvin at amyskitchen.net> wrote:
>
> This solution worked on my development system, but now I'm having a
> similar issue with the production system.  While they're both running
> the same version of SANE (backend=*.18, frontend=*.14), the option no
> longer seems to work.  If I run 'scanadf -h' without the force-a3
entry,
> I see that my height is limited to 420.  But when I add the entry to
the
> avision.conf file, the height is actual decreased to 419 (instead of
> increased to 432 (as it did on my first system).
>
> I think I've controlled for other variables in my testing... so I'm
not
> sure what to do next.  I searched for duplicate avision.conf files on
> the problem system, but I'm sure it's finding this file because when I
> add the force-a3 entry, I do see a change... but like I said, it's -1
> instead of +12.
>
> Any ideas?
>
>
> -----Original Message-----
> From:
> sane-devel-bounces+tomgarvin=amyskitchen.net at lists.alioth.debian.org
>
[mailto:sane-devel-bounces+tomgarvin=amyskitchen.net at lists.alioth.debian
> .org] On Behalf Of m. allan noah
> Sent: Saturday, May 05, 2007 7:33 AM
> To: sane-devel at lists.alioth.debian.org
> Subject: Re: [sane-devel] Avision AV8300 Support for 11x17in Document
> Size
>
> man sane-avision, look for force-a3
>
> allan
>
> On 5/4/07, Tom Garvin <tomgarvin at amyskitchen.net> wrote:
> >
> >
> >
> >
> > Scanning height on the avision libraries seems to be limited to
> 420.116mm.
> > I need to scan an 11x17 document, a size that the AV8300 scanner
> supports,
> > but that would require a scanning height of 432mm.  In looking at
the
> > avision.c file, it seems like scan height is limited to 420 because
> that's
> > the height of A3... which seems to be the maximum document size
> supported by
> > that sane library.   I changed the value of A3_Y_RANGE (line 1419 of
> > avision.c) from 16.5 to 17, recompiled and reinstalled... but to no
> joy.
> >
> >
> >
> > Am I looking in the wrong place?  Do I need corresponding changes in
> other
> > files?  Any help would be greatly appreciated.
> >
> >
> > --
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> >
>
>
> --
> "The truth is an offense, but not a sin"
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-- 
"The truth is an offense, but not a sin"