xcmsdb(1X)xcmsdb(1X)NAMExcmsdb - Device Color Characterization utility for X Color Management
System
SYNOPSISxcmsdb [-query] [-remove] [-format 32 | 16 | 8] [filename]
OPTIONSxcmsdb program accepts the following options: 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. This option attempts to remove the XDCCC properties
on the screen's root window. Specifies the property format (32, 16, or
8 bits per entry) for the XDCCC_LINEAR_RGB_CORRECTION property. Preci‐
sion of encoded floating point values increases with the increase in
bits per entry. The default is 32 bits per entry.
DESCRIPTIONxcmsdb 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_LIN‐
EAR_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 prop‐
erties, provided the -query or -remove options are not specified.
ENVIRONMENT
to figure out which display and screen to use.
SEE ALSOxprop(1X)AUTHOR
Chuck Adams, Tektronix Inc.; Al Tabayoyon, SynChromatics Inc. (added
multi-visual support)
xcmsdb(1X)