kopia lustrzana https://gitlab.com/sane-project/website
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171 wiersze
6.9 KiB
HTML
<HTML>
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<TITLE>sane-dmc.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-dmc.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-dmc.5.html">sane-dmc(5)</A></B> SANE Scanner Access Now Easy <B><A HREF="sane-dmc.5.html">sane-dmc(5)</A></B>
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</PRE>
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<H2>NAME</H2><PRE>
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sane-dmc - SANE backend for the Polaroid Digital Microscope Camera
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</PRE>
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<H2>DESCRIPTION</H2><PRE>
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The <B>sane-dmc</B> library implements a SANE (Scanner Access Now Easy) back-
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end that provides access to the Polaroid Digital Microscope Camera.
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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>special</I>
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Where <I>special</I> is the UNIX path-name for the special device that corre-
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sponds to the scanner. The special device name must be a generic SCSI
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device or a symlink to such a device. Under Linux, such a device name
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could be <I>/dev/sga</I> or <I>/dev/sge</I>, for example.
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</PRE>
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<H2>IMAGING MODES</H2><PRE>
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The Polaroid DMC supports a number of imaging modes. This driver sup-
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ports five of the imaging modes:
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<B>Full</B> <B>Frame</B>
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This mode corresponds to the 801-by-600 pixel full-color full-
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frame image.
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<B>Viewfinder</B>
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This mode corresponds to the 270-by-201 pixel grey-scale
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viewfinder image. This image is acquired very quickly.
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<B>Raw</B> This mode corresponds to the 1599-by-600 pixel "raw" image from
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the CCD. It is grey-scale, with pixels alternating horizontally
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between red, green and blue stripes. The pixels are twice as
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high as they are wide, so the image is distorted.
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<B>Thumbnail</B>
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This mode corresponds to the 80-by-60 pixel full-color thumbnail
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image.
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<B>Super</B> <B>Resolution</B>
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This image is a 1599-by-1200 pixel full-color image constructed
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by filtering and interpolating the "raw" image. The filtering
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and interpolation is done in software, so this mode is very
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slow. Also, this mode places restrictions on how the image is
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read which means that the "preview" mode of xscanimage does not
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work in Super Resolution mode. (<B><A HREF="xcam.1.html">xcam(1)</A></B> and the non-preview
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modes of <B><A HREF="scanimage.1.html">scanimage(1)</A></B> and <B><A HREF="xscanimage.1.html">xscanimage(1)</A></B> work fine, however.)
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</PRE>
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<H2>OTHER SETTINGS</H2><PRE>
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<B>ASA</B> <B>Setting</B>
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This setting adjusts the camera's sensitivity. You can choose
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one of 25, 50, or 100 "equivalent" ASA.
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<B>Shutter</B> <B>Speed</B>
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You can select a shutter speed from 8 to 1000 milliseconds. The
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shutter speed is quantized in units of 32 microseconds.
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<B>White</B> <B>Balance</B>
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You can choose one of "Daylight", "Incandescent" or "Fluores-
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cent" white balances. This setting more-or-less corresponds to
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the "Color Temperature" settings on Polaroid's Windows and Mac
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software.
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</PRE>
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<H2>CONFIGURATION</H2><PRE>
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The contents of the <I>dmc.conf</I> file is a list of device names that corre-
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spond to DMC scanners. Empty lines and lines starting with a hash mark
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(#) are ignored. A sample configuration file is shown below:
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/dev/scanner
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# this is a comment
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/dev/sge
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</PRE>
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<H2>FILES</H2><PRE>
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<I>/usr/local/etc/sane.d/dmc.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-dmc.a</I>
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The static library implementing this backend.
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<I>/usr/local/lib/sane/libsane-dmc.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_DMC</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>BUGS</H2><PRE>
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In the "Full Frame" and "Raw" modes, images must be read in units of
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entire lines. The driver performs no buffering in these modes; if you
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ask sane_read to read a non-integral number of lines, it may read less
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than you ask for. If you ask sane_read to read less than a single
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line, it returns SANE_STATUS_INVAL.
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In the "Super Resolution" mode, images must be read in units of <I>two</I>
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lines (3198 pixels or 9594 bytes). If you try to read less than two
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lines, you get SANE_STATUS_INVAL. The Super Resolution mode is very
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slow.
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In the "Viewfinder" and "Thumbnail" modes, the entire image must be
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read in one SCSI transfer. In this case, the driver performs buffering
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and you can read the image in as small an increment as you like.
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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>, <B><A HREF="sane-scsi.5.html">sane-scsi(5)</A></B>
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</PRE>
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<H2>AUTHOR</H2><PRE>
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David F. Skoll
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The backend is derived from <B><A HREF="sane-hp.5.html">sane-hp(5)</A></B> by David Mosberger
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13 Jul 2008 <B><A HREF="sane-dmc.5.html">sane-dmc(5)</A></B>
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</PRE>
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