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xcmsdb(1)


NAME

   xcmsdb  -  Device Color Characterization utility for X Color Management
   System

SYNOPSIS

   xcmsdb [ -query ] [ -remove ] [ -format 32|16|8 ] [ -help ] [  -version
   ] [ filename ]

DESCRIPTION

   xcmsdb  is used to load, query, or remove Device Color Characterization
   data stored in properties on the root window of the screen as specified
   in  section  7,  Device  Color  Characterization, of the ICCCM.  Device
   Color Characterization data (also called  the  Device  Profile)  is  an
   integral part of Xlib's X Color Management System (Xcms), necessary for
   proper conversion of color specification between device-independent and
   device-dependent   forms.    Xcms  uses  3x3  matrices  stored  in  the
   XDCCC_LINEAR_RGB_MATRICES  property  to  convert  color  specifications
   between  CIEXYZ and RGB Intensity (XcmsRGBi, also referred to as linear
   RGB).   Xcms  then  uses  display  gamma  information  stored  in   the
   XDCCC_LINEAR_RGB_CORRECTION  property  to  convert color specifications
   between RGBi and RGB device (XcmsRGB, also referred to as device RGB).

   Note that Xcms allows clients to register function sets in addition  to
   its  built-in function set for CRT color monitors.  Additional function
   sets may store their device profile information in other properties  in
   function  set  specific  format.  This utility is unaware of these non-
   standard properties.

   The ASCII readable contents of filename (or the standard  input  if  no
   input  file  is  given)  are  appropriately  transformed for storage in
   properties, provided the -query or -remove options are not specified.

OPTIONS

   xcmsdb program accepts the following options:

   -query  This option attempts to  read  the  XDCCC  properties  off  the
           screen's  root  window.   If successful, it transforms the data
           into a more readable format, then sends the  data  to  standard
           out.

   -remove This  option  attempts  to  remove  the XDCCC properties on the
           screen's root window.

   -format 32|16|8
           Specifies the property format (32, 16, or 8 bits per entry) for
           the XDCCC_LINEAR_RGB_CORRECTION property.  Precision of encoded
           floating point values increases with the increase in  bits  per
           entry.  The default is 32 bits per entry.

   -help   This  option  prints  a  summary  of  the available options and
           exits.

   -version
           This option prints the program version and exits.

SEE ALSO

   xprop(1), Xlib documentation

ENVIRONMENT

   DISPLAY to figure out which display and screen to use.

AUTHOR

   Chuck Adams, Tektronix Inc.  Al Tabayoyon,  SynChromatics  Inc.  (added
   multi-visual support)



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