/usr/share/psychtoolbox-3/PsychCal/GamutToSettings.m is in psychtoolbox-3-common 3.0.9+svn2579.dfsg1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 | function settings = GamutToSettings(cal, gamut)
% settings = GamutToSettings(cal, gamut)
%
% Find the best integer device settings to produce
% the passed linear device coordinates.
%
% The passed coordinates should be in the range [0,1].
% The returned settings also run from [0,1], but after
% inversion of the device's gamma measurements.
%
% The returned argument values is what you actually should
% get after quantization error.
%
% 9/26/93 dhb Added calData argument.
% 10/19/93 dhb Allow gamma table dimensions to exceed device settings.
% 11/11/93 dhb Update for new calData routines.
% 8/4/96 dhb Update for stuff bag routines.
% 8/21/97 dhb Update for structures.
% 4/13/02 awi Replaced SettingsToDevice with new name SettingsToPrimary.
% 11/16/06 dhb Adjust for [0,1] world. Involves changing what's passed
% in and out
% Error checking
if isempty(cal.gammaTable)
error('No gamma table present in calibration structure');
end
if isempty(cal.gammaMode)
error('SetGammaMethod has not been called on calibration structure');
end
if cal.gammaMode == 0
settings = GamutToSettingsSch(cal.gammaInput, cal.gammaTable, gamut);
elseif cal.gammaMode == 1
%iGammaTable = cal.iGammaTable;
if isempty(cal.iGammaTable)
error('Inverse gamma table not present for gammaMode == 1');
end
settings = GamutToSettingsTbl(cal.iGammaTable, gamut);
else
error('Requested gamma inversion mode %g is not yet implemented', cal.gammaMode);
end
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