sane-qcam


DESCRIPTION
       The sane-qcam library implements a SANE (Scanner Access Now Easy) back-
       end that provides access Connectix QuickCam cameras.

DEVICE NAMES
       This backend expects device names of the form:

              port

       Where 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.

CONFIGURATION
       The contents of the 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:

              0x37b  # /dev/lp0
              0x378  # /dev/lp1
              u0x278 # /dev/lp2 forced in uni-directional mode
              0x3bc  # /dev/lp0 (alternate address)

       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).

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

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

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

ENVIRONMENT
       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 config-
              uration  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 sepa-
              rator character, then the default directories are searched after
              the  explicitly  specified  directories.   For  example, setting

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).

       The  program  needs root-privileges since it needs to be able to access
       the camera's I/O ports.

SEE ALSO
       sane(7)



                                  14 Jul 2008                     sane-qcam(5)
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