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 > > -- > sane-devel mailing list: sane-devel at lists.alioth.debian.org > http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/sane-devel > Unsubscribe: Send mail with subject "unsubscribe your_password" > to sane-devel-request at lists.alioth.debian.org -- "The truth is an offense, but not a sin"
