kopia lustrzana https://gitlab.com/sane-project/backends
93 wiersze
3.1 KiB
Groff
93 wiersze
3.1 KiB
Groff
.TH sane\-qcam 5 "14 Jul 2008" "@PACKAGEVERSION@" "SANE Scanner Access Now Easy"
|
|
.IX sane\-qcam
|
|
.SH NAME
|
|
sane\-qcam \- SANE backend for Connectix QuickCam cameras
|
|
.SH DESCRIPTION
|
|
The
|
|
.B sane\-qcam
|
|
library implements a SANE (Scanner Access Now Easy) backend that
|
|
provides access Connectix QuickCam cameras.
|
|
.SH "DEVICE NAMES"
|
|
This backend expects device names of the form:
|
|
.PP
|
|
.RS
|
|
.I port
|
|
.RE
|
|
.PP
|
|
Where
|
|
.I port
|
|
is the I/O port address at which the device resides. This address is
|
|
normally specified in hexadecimal using C syntax (e.g., 0x37b) and may
|
|
be prefixed with the letter "u" (e.g., u0x37b) to force the backend to
|
|
access the camera in uni-directional mode.
|
|
.SH CONFIGURATION
|
|
The contents of the
|
|
.I qcam.conf
|
|
file is a list port addresses that may be connected to a
|
|
Connectix QuickCam. Empty lines and everything starting from a hash
|
|
mark (#) up to the end of a line are ignored. A sample configuration
|
|
file is shown below:
|
|
.PP
|
|
.RS
|
|
0x37b # /dev/lp0
|
|
.br
|
|
0x378 # /dev/lp1
|
|
.br
|
|
u0x278 # /dev/lp2 forced in uni-directional mode
|
|
.br
|
|
0x3bc # /dev/lp0 (alternate address)
|
|
.RE
|
|
.PP
|
|
In general, it is safest to list only the port addresses that really
|
|
correspond to a QuickCam. For example, if one of the listed addresses
|
|
actually connect to a printer, then starting up this backend will
|
|
cause the printer to perform a device reset (which is generally
|
|
undesirable).
|
|
.SH FILES
|
|
.TP
|
|
.I @CONFIGDIR@/qcam.conf
|
|
The backend configuration file (see also description of
|
|
.B SANE_CONFIG_DIR
|
|
below).
|
|
.TP
|
|
.I @LIBDIR@/libsane\-qcam.a
|
|
The static library implementing this backend.
|
|
.TP
|
|
.I @LIBDIR@/libsane\-qcam.so
|
|
The shared library implementing this backend (present on systems that
|
|
support dynamic loading).
|
|
.SH ENVIRONMENT
|
|
.TP
|
|
.B 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 @CONFIGDIR@. 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
|
|
.B SANE_CONFIG_DIR
|
|
to "/tmp/config:" would result in directories "tmp/config", ".", and
|
|
"@CONFIGDIR@" being searched (in this order).
|
|
.TP
|
|
.B SANE_DEBUG_QCAM
|
|
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.
|
|
.SH AUTHOR
|
|
David Mosberger
|
|
.SH BUGS
|
|
Support is currently limited to the color version of the QuickCam.
|
|
The black-and-white camera is starting to work too, but I don't
|
|
believe it works in all cases yet. Reportedly, acquiring images of
|
|
certain sizes work fine, but others result in shifted images (sounds
|
|
like a problem due to byte-padding).
|
|
.PP
|
|
The program needs root-privileges since it needs to be able to access
|
|
the camera's I/O ports.
|
|
.SH SEE ALSO
|
|
sane(7)
|