/usr/share/psychtoolbox-3/PsychHardware/iViewXToolbox/iViewX.m is in psychtoolbox-3-common 3.0.11.20131230.dfsg1-1build1.
This file is owned by root:root, with mode 0o644.
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% USAGE: [result, ivx]=iViewX(cstr, ivx [, params])
%
% iViewX requires as input:
% 1. a command string
% 2. a structure with iViewX default values.
% cstr: command to execute
% ivx: structure holding default information
% params: optional parameters to pass on with the command
%
% returns:
% result: any result produced by the command
% ivx: structure with default information (that may have been modified)
% History
% 011204 fwc added additional commands based on manual
% 020105 fwc added sendcalibrationpoints
result=-1;
if ~exist('cstr', 'var') || isempty(cstr)
% txt=[ mfilename ' requires a command string as input.'];
% error(txt);
help iViewX
return
end
switch lower(cstr)
case {'help', '?'},
help iViewX
return
end
if ~exist('ivx', 'var') || isempty(ivx)
txt=[ mfilename ' requires a structure with iViewX default values as input.'];
error(txt);
end
if ~exist('params', 'var') || isempty(params)
params=[];
end
switch lower(cstr)
case 'command',
% --> check that input is a text string
% send string as command
result=iViewXComm('send', ivx, params);
% case 'initialize',
% [result, ivx]=iViewXComm('open', ivx);
% connecting
case 'openconnection',
[result, ivx]=iViewXComm('open', ivx);
case 'closeconnection',
[result, ivx]=iViewXComm('close', ivx);
case 'checkconnection',
[result, ivx]=iViewXComm('check', ivx);
case 'receivedata',
% check port for commands or gaze data from iView
[result, ivx]=iViewXComm('receive', ivx);
case 'datafile',
% saves current data buffer content to a datafile. Data is saved in
% binary format. Use the IDF Converter to convert to ASCII format.
% If the given filename already exists, the existing
% file will not be overwritten and the command is not executed.
% params should contain a datafile
result=iViewXComm('send', ivx, ['ET_SAV ' params]);
% calibration
case 'calibrate',
[result, ivx]=iViewXCalibrate(ivx);
case {'cancelcalibration', 'break'},
result=iViewXComm('send', ivx, 'ET_BRK');
case 'defaultcalibrationpoints',
result=iViewXComm('send', ivx, 'ET_DEF'); % restores default calibration positions
case 'sendcalibrationpoints',
% we could check for the presence of the ivx.absCalPos array
for i=1:ivx.nCalPoints
message=['ET_PNT ' num2str(i) ' ' num2str(ivx.absCalPos(i,1)) ' ' num2str(ivx.absCalPos(i,2))];
% message
result=iViewXComm('send', ivx, message);
end
case 'setpoint',
% params should contain three digits,
% point number, x and y locations
result=iViewXComm('send', ivx, ['ET_PNT ' num2str(params(1)) ' ' num2str(params(2)) ' ' num2str(params(3))]);
case 'setcalibration',
% send calibration type
% check params contains a single valid digit
result=iViewXComm('send', ivx, ['ET_CAL ' num2str(params)]);
% case 'getcalibrationpoints',
% [result, ivx]=iViewXGetCalibrationPoints(ivx);
case {'setscreensize', 'setcalibrationarea'},
% send screen size
if ~isempty(ivx.window)
[ivx.screenHSize, ivx.screenVSize]=WindowSize(ivx.window);
end
message=['ET_CSZ ' num2str(ivx.screenHSize) ' ' num2str(ivx.screenVSize) ];
% check params contains a single valid digit
result=iViewXComm('send', ivx, message);
case 'accept',
result=iViewXComm('send', ivx, 'ET_ACC');
case 'setchecklevel',
% params should contain a single digit, the new level
% runs from 0 (weak) to 3 (strong)
result=iViewXComm('send', ivx, ['ET_LEV ' num2str(params)]);
case 'driftcorrection',
result=iViewXComm('send', ivx, 'ET_RCL');
% this must require more, probably a routine similar to calibration
% % params can hold position for drift correction
% [result, ivx]=iViewXDriftCorrection(ivx, params);
case 'validation',
fprintf('%s: Sorry, command ''%s'' not implemented yet.\n', mfilename, command );
% recording
case 'startrecording',
result=iViewXComm('send', ivx, 'ET_REC');
case 'pauserecording',
result=iViewXComm('send', ivx, 'ET_PSE');
case 'continuerecording',
result=iViewXComm('send', ivx, 'ET_CNT');
case 'stoprecording',
result=iViewXComm('send', ivx, 'ET_STP');
case 'clearbuffer',
result=iViewXComm('send', ivx, 'ET_CLR');
case 'incrementsetnumber',
% params should contain a single digit, the new set number
result=iViewXComm('send', ivx, ['ET_INC ' num2str(params)]);
% streaming
case 'datastreamingon',
result=iViewXComm('send', ivx, 'ET_STR');
% we could/should include ability to specify subsampling
case 'datastreamingoff',
result=iViewXComm('send', ivx, 'ET_EST');
case 'setdataformat',
% set data format for streaming output
result=iViewXComm('send', ivx, ['ET_FRM ' params ]);
% drawing
case 'erasescreen',
iViewXEraseScreen(ivx);
case 'drawcalibrationpoint',
% check params should contain two valid ints
% that are within the screen bounds
iViewXDrawCalibrationPoint(ivx, params);
% miscellaneous
case 'sendconfiguration',
result=iViewXComm('send', ivx, 'ET_CFG');
% not very useful in this manner, as we need to read it out of
% course
% message
case 'message',
% --> check that input is single text string
result=iViewXComm('send', ivx, ['ET_REM ' params ]);
case 'auxdata',
% --> check that input is single text string
result=iViewXComm('send', ivx, ['ET_AUX ' params ]);
case 'loadbitmap',
% --> check that input is a file location on iviewx
result=iViewXComm('send', ivx, ['ET_BMP ' params ]);
otherwise,
fprintf('%s: unknown command ''%s''\n', mfilename, command );
end
%---------------------------
% function result=iViewXSend(ivx, sendstr)
%
% switch ivx.connection
% case 1, % ethernet
%
% % open udp connection, and send command string
% % if this is too time consuming, we should open a port and keep it open
% % for the time of the experiment
% % code stolen from udp_send_demo.m
% result=-1;
% udp=pnet('udpsocket',ivx.socket);
% if udp~=-1,
% try, % Failsafe
% pnet(udp,'udpconnect',ivx.host,ivx.port);
% % [ip,port]=pnet(udp,'gethost')
% % stat=pnet(udp,'status')
% pnet(udp,'write',[sendstr char(10)]); % Write to write buffer
% pnet(udp,'writepacket',ivx.host,ivx.port); % Send buffer as UDP packet
%
% catch,
% pnet('closeall');
% disp(lasterr)
% end
% % [ip,port]=pnet(udp,'gethost')
% % stat=pnet(udp,'status')
% pnet(udp,'close');
% result=1;
% end
%
% case 2,
% % assume we use serial communication
% error([mfilename ': serial communication not implemented yet']);
%
%
% otherwise,
% error([mfilename ': unknown connection type']);
% end
%
% ET_ACC accepts calibration point
% ET_BRK cancels calibration
% ET_CAL starts calibration
% ET_CHG indicates calibration point change
% ET_CSZ sets size of calibration area
% ET_DEF resets calibration points to default positions
% ET_FIN indicates end of calibration
% ET_LEV sets check level for calibration
% ET_PNT sets position of calibration point
% ET_RCL starts drift correction
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