kopia lustrzana https://gitlab.com/sane-project/backends
92 wiersze
2.8 KiB
Groff
92 wiersze
2.8 KiB
Groff
.TH sane\-v4l 5 "14 Jul 2008" "@PACKAGEVERSION@" "SANE Scanner Access Now Easy"
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.IX sane\-v4l
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.SH NAME
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sane\-v4l \- SANE interface for Video for Linux API
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.SH DESCRIPTION
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The
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.B sane\-v4l
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library implements a SANE (Scanner Access Now Easy) backend that
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provides generic access to video cameras and similar equipment using
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the V4L (Video for Linux) API.
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.PP
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This is ALPHA software. Really! Important features are missing and there are
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lots of bugs. The code is currently only tested on a Linux 2.4 system with a
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Hauppauge WinTV video card.
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.PP
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.SH "DEVICE NAMES"
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This backend expects device names of the form:
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.PP
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.RS
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.I special
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.RE
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.PP
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Where
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.I special
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is the UNIX path-name for the special device that corresponds to the
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v4l device. The special device name must be a v4l device or a symlink
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to such a device. For example, such a device name could be
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.I /dev/video0
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or
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.IR /dev/bttv0 .
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.SH CONFIGURATION
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The contents of the
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.I v4l.conf
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file is a list of device names that correspond to v4l
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devices. Empty lines and lines starting with a hash mark (#) are
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ignored. A sample configuration file is shown below:
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.PP
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.RS
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/dev/bttv0
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.br
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# this is a comment
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.br
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/dev/video3
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.RE
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.SH FILES
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.TP
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.I @CONFIGDIR@/v4l.conf
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The backend configuration file (see also description of
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.B SANE_CONFIG_DIR
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below).
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.TP
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.I @LIBDIR@/libsane\-v4l.a
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The static library implementing this backend.
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.TP
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.I @LIBDIR@/libsane\-v4l.so
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The shared library implementing this backend (present on systems that
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support dynamic loading).
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.SH ENVIRONMENT
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.TP
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.B SANE_CONFIG_DIR
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This environment variable specifies the list of directories that may
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contain the configuration file. Under UNIX, the directories are
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separated by a colon (`:'), under OS/2, they are separated by a
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semi-colon (`;'). If this variable is not set, the configuration file
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is searched in two default directories: first, the current working
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directory (".") and then in @CONFIGDIR@. If the value of the
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environment variable ends with the directory separator character, then
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the default directories are searched after the explicitly specified
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directories. For example, setting
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.B SANE_CONFIG_DIR
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to "/tmp/config:" would result in directories "tmp/config", ".", and
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"@CONFIGDIR@" being searched (in this order).
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.TP
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.B SANE_DEBUG_V4L
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If the library was compiled with debug support enabled, this
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environment variable controls the debug level for this backend. E.g.,
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a value of 128 requests all debug output to be printed. Smaller
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levels reduce verbosity.
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.SH AUTHOR
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Juergen G. Schimmer, Henning Meier-Geinitz
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.SH BUGS:
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If more than one video card is present, a crash may occur. Frequency and geometry
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selection is missing.
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.br
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Send bug reports to the SANE mailing list: sane\-devel@lists.alioth.debian.org. You must
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be subscribed to the list to send mail. See
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http://www.sane\-project.org/mailing\-lists.html for details.
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.SH SEE ALSO
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sane(7), xcam(1).
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