sane-agfafocus.5

sane-agfafocus(5)        SANE Scanner Access Now Easy        sane-agfafocus(5)

NAME

       sane-agfafocus - SANE backend for AGFA Focus flatbed scanners

DESCRIPTION

       The  sane-agfafocus library implements a SANE (Scanner Access Now Easy)
       backend that  provides  access  to  AGFA  Focus  flatbed  scanners.  At
       present, the following scanners are supported from this backend:

              AGFA Focus GS Scanner (6 bit gray scale) (untested)
              AGFA Focus Lineart Scanner (lineart) (untested)
              AGFA Focus II (8 bit gray scale) (untested)
              AGFA Focus Color (24 bit color 3-pass)
              AGFA Focus Color Plus (24 bit color 3-pass)

              Siemens S9036 (8 bit gray scale) (untested)

       The driver supports line art, 6bpp and 8bpp gray, 18bpp and 24bpp color
       scans.

       If  you  own a scanner other than the ones listed above that works with
       this backend, please let us know by sending the scanner's  model  name,
       SCSI  id,  and firmware revision to sane-devel@alioth-lists.debian.net.
       Have a look at http://www.sane-project.org/mailing-lists.html  concern-
       ing subscription to sane-devel.

       All  of  these scanners are pre-SCSI-2, and do not even report properly
       to SCSI Inquiry.  This is typically evident in SCSI  bus  scans,  where
       the  scanner  will  come  up  with  only  garbage  as vendor and models
       strings.

DEVICE NAMES

       This backend expects device names of the form:

              special

       where special is the path-name for the special device that  corresponds
       to a SCSI scanner. For SCSI scanners, the special device name must be a
       generic SCSI device or a symlink to such a device.  Under Linux, such a
       device   name   could  be  /dev/sga  or  /dev/sge,  for  example.   See
       sane-scsi(5) for details.

CONFIGURATION

       The contents of the agfafocus.conf file is a list of device names  that
       correspond to AGFA Focus scanners.  Empty lines and lines starting with
       a  hash mark (#) are ignored.  A sample configuration file is shown be-
       low:

              /dev/scanner
              # this is a comment
              /dev/sge

FILES

       /etc/sane.d/agfafocus.conf
              The  backend  configuration  file  (see  also   description   of
              SANE_CONFIG_DIR below).

       /usr/lib/libsane-agfafocus.a
              The static library implementing this backend.

       /usr/lib/libsane-agfafocus.so
              The shared library implementing this backend (present on systems
              that support dynamic loading).

ENVIRONMENT

       SANE_CONFIG_DIR
              This environment variable specifies the list of directories that
              may contain the configuration file.  On *NIX systems, the direc-
              tories are separated by a colon (`:'), under OS/2, they are sep-
              arated  by a semi-colon (`;').  If this variable is not set, the
              configuration file  is  searched  in  two  default  directories:
              first,  the current working directory (".") and then in /usr/lo-
              cal/etc/sane.d.  If the value of the environment  variable  ends
              with  the directory separator character, then the default direc-
              tories are searched after the explicitly specified  directories.
              For example, setting SANE_CONFIG_DIR to "/tmp/config:" would re-
              sult in directories tmp/config, ., and /usr/local/etc/sane.d be-
              ing searched (in this order).

       SANE_DEBUG_AGFAFOCUS
              If the library was compiled with debug support enabled, this en-
              vironment  variable  controls  the debug level for this backend.
              E.g., a value of 128 requests all debug output  to  be  printed.
              Smaller levels reduce verbosity.  SANE_DEBUG_AGFAFOCUS values:

              Number  Remark
               0       print important errors (printed each time)
               1       print errors
               2       print sense
               3       print warnings
               4       print scanner-inquiry
               5       print information
               6       print less important information
               7       print called procedures
               8       print reader_process messages
               10      print called sane-init-routines
               11      print called sane-procedures
               12      print sane infos
               13      print sane option-control messages

MISSING FUNCTIONALITY

       Uploading  of  dither matrices and tonecurves has been implemented, but
       so far has not proven to be useful for anything.  For this reason these
       options have been disabled.

BUGS

       The scanners that do not support disconnect  have  problems  with  SCSI
       timeouts  if  the SCSI bus gets loaded, eg. if you do a kernel build at
       the same time as scanning.  To see if your scanner supports disconnect,
       run SANE_DEBUG_AGFAFOCUS=128 scanimage -L in a terminal  and  look  for
       the "disconnect:" line.

DEBUG

       If  you  have  problems with SANE not detecting your scanner, make sure
       the Artec backend is disabled.  Somehow, this backend causes  at  least
       my scanner not to respond correctly to SCSI inquiry commands.

       If  you  encounter  a  bug please set the environment variable SANE_DE-
       BUG_AGFAFOCUS to 128 and try to regenerate the problem. Then send me  a
       report with the log attached.

       If  you  encounter  a SCSI bus error or trimmed and/or displaced images
       please also set the environment variable SANE_DEBUG_SANEI_SCSI  to  128
       before sending me the report.

TODO

       More scanners?

              The  AGFA  ACS and ARCUS scanners are similar to the FOCUS scan-
              ners.  The driver could probably be extended  to  support  these
              scanners without too many changes.  I do not have access to such
              scanners, and cannot add support for it.  However, if you are in
              possession  of such a scanner, I could be helpful in adding sup-
              port for these scanners.

              The AGFA HORIZON scanners are  SCSI-2  scanners,  and  it  would
              probably be easier to support these scanners in a SCSI-2 compli-
              ant backend.

SEE ALSO

       sane(7), sane-scsi(5)

AUTHOR

       Ingo Schneider and Karl Anders Oygard.

                                  10 Jul 2008                sane-agfafocus(5)