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XCMSDB(1)						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.



X Version 11		   Release 6.6				1





XCMSDB(1)						XCMSDB(1)



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)
















































X Version 11		   Release 6.6				2