[sane-devel] Question about infrared on my LS-4000

[m. allan noah]

On Fri, Aug 17, 2012 at 1:58 PM, Mylan Connolly <mr.mylanman at gmail.com> wrote:
> I suppose I could be confused, then.  I saw mention here:
>
> http://www.sane-project.org/man/sane-coolscan3.5.html
>
> The backend must not be directly associated with SANE, then I take it?
>
> What I took from that documentation was;
>
> Set --batch-count=2 (and probably --batch, as well I would imagine),
> and the --infrared=yes tag and it should work, however no combination
> got it working, that I could find.
>
> I guess I'm just a little confused.
>

You are reading it on our website, so its related :) I suppose the
backend is trying to get around the limitation in the sane protocol by
giving a second image with the IR data in it. However, the code
contains the following:

#ifndef SANE_FRAME_RGBI
 o.cap |= SANE_CAP_INACTIVE;
#endif

IOW: IR is disabled unless you build sane-backends with it specifically enabled.

allan
-- 
"The truth is an offense, but not a sin"