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sane-agfafocus(5)
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sane-agfafocus - SANE backend for AGFA Focus flatbed scanners
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@mostang.com. Have a look
at http://www.mostang.com/sane/mail.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.
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.
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
/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).
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 [Toc] [Back]
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 informations
6 print less important informations
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 [Toc] [Back] 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.
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)
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.
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.
sane(7), sane-scsi(5)
Ingo Schneider and Karl Anders Oygard.
17 Oct 1998 sane-agfafocus(5)
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