|The backend configuration file (see also description of SANE_CONFIG_DIR below).|
|The static library implementing this backend.|
|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 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:
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
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.
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.
Ingo Schneider and Karl Anders [/O]ygard.
|SANE-AGFAFOCUS (5)||10 Jul 2008|