[sane-devel] PNM Driver problem scanimage (sane-backends) 1.0.22; backend version 1.0.22

[m. allan noah]

Can you try to get some debug logs of the backend, to compare the two programs?

SANE_DEBUG_PNM=255 scanimage ... 2> scanimage.log
SANE_DEBUG_PNM=255 perlprog ... 2> perlprog.log

Maybe the perl code needs an additional call somewhere, or maybe there
is a bug in the backend.

allan

On Fri, Nov 2, 2012 at 12:54 PM, Alejandro Imass <aimass at yabarana.com> wrote:
> Hello,
>
> I am wondring if something has changed in the API to the pnm driver.
>
> I'm running Sane 1.0.22 on Mac OS X and the command line scanimage
> works fine with the PNM driver at index 0 (pnm:0).
>
> But when I access it through the Sane.pm Perl interface to sane I get
> no data on the read() call. The Sane.pm is working well because I am
> able to dump the pnm scanner options.
>
> I tried forcing the io_mode to SANE_FALSE which should force the
> blocking mode. I get $len = 0 like if it was in non-blocking mode and
> get no errors?
>
> So I am bit out of ideas on why read() is returning with $len = 0 immediately.
>
> What could be going on??
>
> Thanks,
>
> --
> Alejandro Imass
>
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