XCMSDB(1)

NAME
       xcmsdb - Device Color Characterization utility for X Color
       Management System

SYNOPSIS
       xcmsdb [ -query ] [ -remove ] [ -format 32|16|8 ] [  file-
       name ]

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  Char-
       acterization  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_LIN-
       EAR_RGB_MATRICES property to convert color  specifications
       between  CIEXYZ and RGB Intensity (XcmsRGBi, also referred
       to as linear RGB).  Xcms then uses display gamma  informa-
       tion 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  moni-
       tors.   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 trans-
       formed 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  proper-
               ties 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.

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)