sane-agfafocus(5) SANE Scanner Access Now Easy sane-agfafocus(5)NAMEsane-agfafocus - SANE backend for AGFA Focus flatbed scan-
ners
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@mostang.com. Have a look at
http://www.mostang.com/sane/mail.html concerning subscrip-
tion to sane-devel.
All of these scanners are pre-SCSI-2, and do not even
report properly to SCSI Inquiry. This is typically evi-
dent 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 scan-
ners, 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 descrip-
tion 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 (pre-
sent 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 sepa-
rator character, then the default directories are
searched after the explicitly specified directo-
ries. 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 val-
ues:
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
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 dis-
abled.
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_AGFAFO-
CUS=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 cor-
rectly 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 dis-
placed 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 scan-
ners in a SCSI-2 compliant backend.
SEE ALSOsane(7), sane-scsi(5)AUTHOR
Ingo Schneider and Karl Anders ygard.
sane-backends 1.0.12 17 Oct 1998 sane-agfafocus(5)
