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@lists.alioth.debian.org.
Have a look at http://www.sane-project.org/mailing-lists.html
concerning 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 either 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
below:
/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. Under UNIX, the directories
are separated by a colon (`:'), under OS/2, they are separated
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
/etc/sane.d. If the value of the environment variable ends with
the directory separator character, then the default directories
are searched after the explicitly specified directories. For
example, setting SANE_CONFIG_DIR to "/tmp/config:" would result
in directories "tmp/config", ".", and "/etc/sane.d" being
searched (in this order).
SANE_DEBUG_AGFAFOCUS
If the library was compiled with debug support enabled, this
environment 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 sh 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_DEBUG_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
scanners. 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 support 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
compliant backend.
SEE ALSO
sane(7), sane-scsi(5)
AUTHOR
Ingo Schneider and Karl Anders ygard.
10 Jul 2008 sane-agfafocus(5)
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