/usr/share/psychtoolbox-3/PsychContributed/WinJoystickMex.c 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 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 | /*------------------------------------------------------------------------------
WinJoystickMex.c -- A simple Matlab/Octave MEX file for query of joysticks on Microsoft Windows.
On Matlab, compile with:
mex -v -g WinJoystickMex.c winmm.lib
On Octave, compile with:
mex -v -g WinJoystickMex.c -lwinmm
------------------------------------------------------------------------------
WinJoystickMex.c is Copyright (C) 2009 Mario Kleiner
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
One copy of the license can be found in the License.txt file inside the
Psychtoolbox-3 top level folder.
------------------------------------------------------------------------------*/
/* Windows includes: */
#include <windows.h>
/* Matlab includes: */
#include "mex.h"
/* This is the main entry point from Matlab: */
void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray*prhs[])
{
JOYINFO joy; // Struct into which joystick state is returned.
MMRESULT rc; // Return code of function.
unsigned int cmd;
double* out;
// Get our name for output:
const char* me = mexFunctionName();
if(nrhs < 1) {
mexPrintf("WinJoystickMex: A simple Matlab/Octave MEX file for query of simple joysticks on Microsoft Windows\n\n");
mexPrintf("(C) 2009 by Mario Kleiner -- Licensed to you under GPLv2 or any later version.\n");
mexPrintf("This file is part of Psychtoolbox-3 but should also work independently.\n");
mexPrintf("\n");
mexPrintf("Usage:\n\n");
mexPrintf("[x, y, z, buttons] = %s(joystickId);\n", me);
mexPrintf("- Query joystick device 'joystickId'. This can be any number between 0 and 15.\n");
mexPrintf("0 is the first connected joystick, 1 the 2nd, etc...\n");
mexPrintf("x, y and z are the current x, y and z coordinate of the joystick.\n");
mexPrintf("buttons is a 4-element vector, each element being zero if the corresponding button is released,\n");
mexPrintf("one if the corresponding button is pressed.\n\n\n");
return;
}
/* First argument must be the joystick id: */
cmd = (unsigned int) mxGetScalar(prhs[0]);
/* Call joystick function: */
if ((rc = joyGetPos((UINT) cmd, &joy)) != JOYERR_NOERROR) {
// Failed!
mexPrintf("For failed joystick call with 'joystickId' = %i.\n", cmd);
switch((int) rc) {
case MMSYSERR_NODRIVER:
mexErrMsgTxt("The joystick driver is not present or active on this system! [MMSYSERR_NODRIVER]");
break;
case JOYERR_NOCANDO:
mexErrMsgTxt("Some system service for joystick support is not present or active on this system! [JOYERR_NOCANDO]");
break;
case MMSYSERR_INVALPARAM:
case JOYERR_PARMS:
mexErrMsgTxt("Invalid 'joystickId' passed! [MMSYSERR_INVALPARAM or JOYERR_PARMS]");
break;
case JOYERR_UNPLUGGED:
mexErrMsgTxt("The specified joystick is not connected to the system! [JOYERR_UNPLUGGED]");
break;
default:
mexPrintf("Return code of failed joystick call is %i.\n", rc);
mexErrMsgTxt("Unknown error! See return code above.");
}
}
// Return X pos:
plhs[0] = mxCreateDoubleMatrix(1, 1, mxREAL);
*(mxGetPr(plhs[0])) = (double) joy.wXpos;
// Return Y pos:
plhs[1] = mxCreateDoubleMatrix(1, 1, mxREAL);
*(mxGetPr(plhs[1])) = (double) joy.wYpos;
// Return Z pos:
plhs[2] = mxCreateDoubleMatrix(1, 1, mxREAL);
*(mxGetPr(plhs[2])) = (double) joy.wZpos;
// Return 4-element button state vector:
plhs[3] = mxCreateDoubleMatrix(1, 4, mxREAL);
out = mxGetPr(plhs[3]);
out[0] = (joy.wButtons & JOY_BUTTON1) ? 1 : 0;
out[1] = (joy.wButtons & JOY_BUTTON2) ? 1 : 0;
out[2] = (joy.wButtons & JOY_BUTTON3) ? 1 : 0;
out[3] = (joy.wButtons & JOY_BUTTON4) ? 1 : 0;
// Done.
return;
}
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