NAME
xcmsdb - Device Color Characterization utility for X Color Management
System
SYNOPSIS
xcmsdb [ -query ] [ -remove ] [ -format 32|16|8 ] [ 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.
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)