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121 wiersze
4.5 KiB
HTML
<HTML>
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<TITLE>sane-qcam.5</TITLE>
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<BODY BGCOLOR=#FFFFFF TEXT=#000000><H1 ALIGN=CENTER><IMG SRC="/images/sane.png" HEIGHT=117 WIDTH=346></H1>
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<H1>sane-qcam.5</H1>
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<HR>
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<PRE>
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<!-- Manpage converted by man2html 3.0.1 -->
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<B><A HREF="sane-qcam.5.html">sane-qcam(5)</A></B> SANE Scanner Access Now Easy <B><A HREF="sane-qcam.5.html">sane-qcam(5)</A></B>
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</PRE>
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<H2>NAME</H2><PRE>
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sane-qcam - SANE backend for Connectix QuickCam cameras
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</PRE>
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<H2>DESCRIPTION</H2><PRE>
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The <B>sane-qcam</B> library implements a SANE (Scanner Access Now Easy) back-
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end that provides access Connectix QuickCam cameras.
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</PRE>
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<H2>DEVICE NAMES</H2><PRE>
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This backend expects device names of the form:
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<I>port</I>
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where <I>port</I> is the I/O port address at which the device resides. This
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address is normally specified in hexadecimal using C syntax (e.g.,
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0x37b) and may be prefixed with the letter "u" (e.g., u0x37b) to force
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the backend to access the camera in uni-directional mode.
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</PRE>
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<H2>CONFIGURATION</H2><PRE>
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The contents of the <I>qcam.conf</I> file is a list port addresses that may be
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connected to a Connectix QuickCam. Empty lines and everything starting
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from a hash mark (#) up to the end of a line are ignored. A sample
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configuration file is shown below:
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0x37b # /dev/lp0
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0x378 # /dev/lp1
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u0x278 # /dev/lp2 forced in uni-directional mode
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0x3bc # /dev/lp0 (alternate address)
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In general, it is safest to list only the port addresses that really
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correspond to a QuickCam. For example, if one of the listed addresses
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actually connect to a printer, then starting up this backend will cause
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the printer to perform a device reset (which is generally undesirable).
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</PRE>
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<H2>FILES</H2><PRE>
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<I>/usr/local/etc/sane.d/qcam.conf</I>
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The backend configuration file (see also description of
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<B>SANE_CONFIG_DIR</B> below).
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<I>/usr/local/lib/sane/libsane-qcam.a</I>
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The static library implementing this backend.
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<I>/usr/local/lib/sane/libsane-qcam.so</I>
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The shared library implementing this backend (present on systems
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that support dynamic loading).
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</PRE>
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<H2>ENVIRONMENT</H2><PRE>
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<B>SANE_CONFIG_DIR</B>
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This environment variable specifies the list of directories that
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may contain the configuration file. On *NIX systems, the direc-
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tories are separated by a colon (`:'), under OS/2, they are sep-
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arated by a semi-colon (`;'). If this variable is not set, the
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configuration file is searched in two default directories:
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first, the current working directory (".") and then in
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<I>/usr/local/etc/sane.d</I>. If the value of the environment variable
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ends with the directory separator character, then the default
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directories are searched after the explicitly specified directo-
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ries. For example, setting <B>SANE_CONFIG_DIR</B> to "/tmp/config:"
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would result in directories <I>tmp/config</I>, <I>.</I>, and
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<I>/usr/local/etc/sane.d</I> being searched (in this order).
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<B>SANE_DEBUG_QCAM</B>
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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.
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E.g., a value of 128 requests all debug output to be printed.
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Smaller levels reduce verbosity.
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</PRE>
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<H2>AUTHOR</H2><PRE>
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David Mosberger
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</PRE>
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<H2>BUGS</H2><PRE>
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Support is currently limited to the color version of the QuickCam. The
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black-and-white camera is starting to work too, but I don't believe it
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works in all cases yet. Reportedly, acquiring images of certain sizes
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work fine, but others result in shifted images (sounds like a problem
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due to byte-padding).
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The program needs root-privileges since it needs to be able to access
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the camera's I/O ports.
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</PRE>
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<H2>SEE ALSO</H2><PRE>
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<B><A HREF="sane.7.html">sane(7)</A></B>
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14 Jul 2008 <B><A HREF="sane-qcam.5.html">sane-qcam(5)</A></B>
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</PRE>
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