kopia lustrzana https://gitlab.com/sane-project/backends
277 wiersze
7.0 KiB
Groff
277 wiersze
7.0 KiB
Groff
.TH sane-umax 5 "29 november 2002" "@PACKAGEVERSION@" "SANE Scanner Access Now Easy"
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.IX sane-umax
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.SH NAME
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sane-umax \- SANE backend for UMAX scanners
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.SH ABOUT THIS FILE
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This file only is a short descripton of the umax-backend for sane! For detailled information take a look at
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sane-umax-doc.html (it is included in the sane source directory and in the xsane online help)!
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.SH DESCRIPTION
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The
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.B sane-umax
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library implements a SANE backend that provides acces to several UMAX-SCSI-scanners and some Linotye Hell SCSI-scanners,
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parallel- and USB-scanners are not (and propably will never be) supported!
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.B I suggest you hold one hand on the power-button of the scanner while you try the first scans!
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.SH CONFIGURATION
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The configuration file for this backend resides in
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.IR @CONFIGDIR@/umax.conf .
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Its contents is a list of device names that correspond to UMAX and UMAX compatible scanners. Empty lines
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and lines starting with a hash mark (#) are ignored. A sample configuration file is
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shown below:
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.nf
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# this is a comment
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#
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option scsi-maxqueue 4
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option scsi-buffer-size-min 65536
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option scsi-buffer-size-max 131072
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option scan-lines 40
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option preview-lines 10
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option scsi-maxqueue 2
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option execute-request-sense 0
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option force-preview-bit-rgb 0
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option slow-speed -1
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option care-about-smearing -1
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option calibration-full-ccd -1
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option calibration-width-offset -1
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option calibration-bytes-pixel -1
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option exposure-time-rgb-bind -1
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option invert-shading-data -1
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option lamp-control-available 0
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option gamma-lsb-padded 0
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/dev/sge
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\
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#scsi Vendor Model Type Bus Channel ID LUN
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# The following scanner supports lamp control
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option lamp-control-available 1
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scsi UMAX * Scanner * * * * *
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\
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# scanner on /dev/scanner does not support lamp control
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option lamp-control-available 0
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/dev/scanner
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.fi
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.TP
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execute-request-sense:
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values: 0 = disabled, 1 = enabled
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.br
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default = 0
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.br
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If set to 1 umax_do_request_sense is called in
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umax_do_calibration. This can hang the system
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(but has been enabled until this version)
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.TP
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scsi-buffer-size-min, scsi-buffer-size-max:
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values: 4096-1048576
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.br
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default min = 32768, max = 131072
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.br
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Especially the minimum value is very important.
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If this value is set too small the backend is not
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able to send gamma tables to the scanner or to
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do a correct color calibration. This may result in
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strange color effects. If the minimum value is set
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too large then the backend is not able to allocate
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the requested scsi buffer size and aborts with
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out of memory error. The default is 32KB, for
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some scanners it should be increased to 64KB.
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.TP
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scan-lines, preview-lines:
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values: 1-65535
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.br
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default: scan-lines = 40, preview-lines = 10
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.br
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define the maximum number of lines that are scanned
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into one buffer
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.TP
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force-preview-bit-rgb:
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values:
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0 = disabled,
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1 = enabled
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.br
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default = 0
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.br
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set preview bit in rgb real scan
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.TP
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slow-speed, care-about-smearing:
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values:
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-1 = auto,
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0 = disabled,
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1 = enabled
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.br
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default = -1
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.br
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dangerous options, needed for some scanners
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do not changed these options until you really know
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what you do, you may destroy your scanner when you
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define wrong values for this options
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.TP
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calibration-full-ccd:
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values:
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-1 = auto,
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0 = disabled,
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1 = enabled
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.br
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default = -1
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.br
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do calibration for each pixel of ccd instead of
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selected image
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.TP
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calibration-width-offset:
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values: -99999 = auto, > -99999 set value
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.br
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add an offset width to the calculated with for
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image/ccd
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.TP
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calibration-bytes-pixel:
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values:
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-1 = disabled,
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0 = not set,
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1 = 1 byte/pixel,
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2 = 2 bytes/pixel
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.br
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use # bytes per pixel for calibration
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.TP
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exposure-time-rgb-bind:
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values:
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-1 = automatically set by driver \- if known,
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0 = disabled (own selection for red, green and blue),
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1 = enabled (same values for red, green and blue)
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.TP
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invert-shading-data:
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values:
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-1 = automatically set by driver \- if known,
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0 = disabled,
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1 = enabled
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.br
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default = -1
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.br
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invert shading data before sending it back to the scanner
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.TP
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lamp-control-available:
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values:
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0 = automatically set by driver \- if known,
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1 = available
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.br
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default = 0
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.TP
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gamma-lsb-padded:
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values:
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-1 = automatically set by driver \- if known,
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0 = gamma data is msb padded,
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1 = gamma data is lsb padded
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.br
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default = -1
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.TP
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handle-bad-sense-error:
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values:
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0 = handle as device busy,
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1 = handle as ok,
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2 = handle as i/o error,
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3 = ignore bad error code \- continue sense handler
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.br
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default = 0
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.TP
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scsi-maxqueue:
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values:
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1..# (maximum defined at compile time)
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.br
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default = 2
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.br
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most scsi drivers allow internal command queueing with a depth
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of 2 commands. In most cases it does not mprove anything when you
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increase this value. When your scsi driver does not support any
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command queueing you can try to set this value to 1.
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.PP
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The special device name must be a generic SCSI device or a symlink to such a device.
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To find out to which device your scanner is assigned and how you have to set the
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permissions of that device, have a look at sane-scsi.
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.SH SCSI ADAPTER TIPS
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The ISA-SCSI-adapters that are shipped with some Umax-scanners are not supported very
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well by Linux (I suggest not to use it), the PCI-SCSI-adapters that come with some
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Umax-scanners are not supported at all (as far as I know). On other platforms these
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SCSI-adapters are not supported. So you typically need to purchase another SCSI-adapter
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that is supported by your platform. See the relevant hardware FAQs and HOWTOs for your
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platform for more information.
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The UMAX-scanners do block the scsi-bus for a few seconds while scanning. It is not
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necessary to connect the scanner to its own SCSI-adapter. But if you need short
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response time for your SCSI-harddisk (e.g. if your computer is a file-server) or
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other scsi devices, I suggest you use an own SCSI-adapter for your UMAX-scanner.
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If you have any problems with your Umax scanner, check your scsi chain
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(cable length, termination, ...).
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See also: sane-scsi(5)
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.SH FILES
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.TP
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The backend configuration file:
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.I @CONFIGDIR@/umax.conf
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.TP
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The static library implementing this backend:
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.I @LIBDIR@/libsane-umax.a
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.TP
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The shared library implementing this backend:
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.I @LIBDIR@/libsane-umax.so
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(present on systems that support dynamic loading)
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.SH ENVIRONMENT
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.TP
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.B SANE_DEBUG_UMAX
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If the library was compiled with debug support enabled, this environment
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variable controls the debug level for this backend. E.g., a value of 128
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requests all debug output to be printed. Smaller levels reduce verbosity:
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SANE_DEBUG_UMAX values
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.ft CR
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.nf
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Number Remark
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\
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0 print important errors (printed each time)
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1 print errors
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2 print sense
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3 print warnings
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4 print scanner-inquiry
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5 print informations
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6 print less important informations
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7 print called procedures
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8 print reader_process messages
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10 print called sane-init-routines
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11 print called sane-procedures
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12 print sane infos
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13 print sane option-control messages
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.fi
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.ft R
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.TP
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Example:
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export SANE_DEBUG_UMAX=8
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.SH BUGS
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X-resolutions greater than 600 dpi sometimes make problems
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.SH SEE ALSO
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sane(7)
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.SH AUTHOR
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Oliver Rauch
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.SH EMAIL-CONTACT
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Oliver.Rauch@Rauch-Domain.DE
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