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sane-v4l(5)

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NAME    [Toc]    [Back]

       sane-v4l - SANE interface for Video for Linux API

DESCRIPTION    [Toc]    [Back]

       The  sane-v4l library implements a SANE (Scanner Access Now Easy) backend
 that provides generic access to video cameras and similar equipment
       using the V4L (Video for Linux) API.


DEVICE NAMES    [Toc]    [Back]

       This backend expects device names of the form:

	      special

       Where  special is the UNIX path-name for the special device that corresponds
 to the v4l device.  The special device name must be a v4l device
       or  a  symlink to such a device.  For example, such a device name could
       be /dev/video0 or /dev/bttv0.

CONFIGURATION    [Toc]    [Back]

       The contents of the v4l.conf file is a list of device names that correspond
  to v4l devices.  Empty lines and lines starting with a hash mark
       (#) are ignored.  A sample configuration file is shown below:

	      /dev/bttv0
	      # this is a comment
	      /dev/video3

FILES    [Toc]    [Back]

       /etc/sane.d/v4l.conf
	      The  backend  configuration  file  (see  also   description   of
	      SANE_CONFIG_DIR below).

       /usr/lib/sane/libsane-v4l.a
	      The static library implementing this backend.

       /usr/lib/sane/libsane-v4l.so
	      The shared library implementing this backend (present on systems
	      that support dynamic loading).

ENVIRONMENT    [Toc]    [Back]

       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_V4L    [Toc]    [Back]
	      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.

AUTHOR    [Toc]    [Back]

       Juergen G. Schimmer

       Man page copied from the pint backend  and  edited  by  Henning	MeierGeinitz.



BUGS:
       If more than one video card is present, a crash may occur.
       Send bug reports to the SANE mailing list: sane-devel@mostang.com.  You
       must   be   subscribed	to   the    list    to	  send	  mail.    See
       http://www.mostang.com/sane/mail.html for details.

SEE ALSO    [Toc]    [Back]

      
      
       sane(7).



				 15 July 2000			   sane-v4l(5)
[ Back ]
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