/*
    PSYCHHIDCheckInit() 
    
    Check to see if we need to create the USB-HID device list. If it has not been created then create it.   
*/
void PsychHIDVerifyInit(void)
{
    psych_bool success = TRUE;
    
    // Build HID device list if it doesn't already exist:
    if (!HIDHaveDeviceList()) success = (psych_bool) HIDBuildDeviceList(0, 0);
    
    // This check can only be made against the 64-Bit HID Utilities, as the older 32-Bit
    // version is even more crappy and can't report meaningful error status:
    #if defined(__LP64__)
    if (!success) {
        printf("PsychHID-ERROR: Could not enumerate HID devices (HIDBuildDeviceList() failed)! There can be various reasons,\n");
        printf("PsychHID-ERROR: ranging from bugs in Apples HID software to a buggy HID device driver for some connected device,\n");
        printf("PsychHID-ERROR: to general operating system malfunction. A reboot or device driver update for 3rd party HID devices\n");
        printf("PsychHID-ERROR: maybe could help. Check the OSX system log for possible HID related error messages or hints. Aborting...\n");
        PsychErrorExitMsg(PsychError_system, "HID device enumeration failed due to malfunction in the OSX 64 Bit Apple HID Utilities framework.");
    }
    #endif
    
    // Double-Check to protect against pathetic Apple software:
    if (!HIDHaveDeviceList()) {
        printf("PsychHID-ERROR: Could not enumerate HID devices (HIDBuildDeviceList() success, but HIDHaveDeviceList() still failed)!\n");
        printf("PsychHID-ERROR: Reasons can be ranging from bugs in Apples HID software to a buggy HID device driver for some connected device,\n");
        printf("PsychHID-ERROR: to general operating system malfunction. A reboot or device driver update for 3rd party HID devices\n");
        printf("PsychHID-ERROR: maybe could help. Check the OSX system log for possible HID related error messages or hints. Aborting...\n");
        PsychErrorExitMsg(PsychError_system, "HID device enumeration failed due to malfunction in the OSX Apple HID Utilities framework (II).");
    }
    
    // Verify no security sensitive application is blocking our low-level access to HID devices:
	PsychHIDWarnInputDisabled(NULL);
}
Esempio n. 2
0
/*
    PSYCHHIDCheckInit() 
    
    Check to see if we need to create the USB-HID device list. If it has not been created then create it.   
*/
void PsychHIDVerifyInit(void)
{
    psych_bool success = TRUE;
    
    // Build HID device list if it doesn't already exist:
    if (!HIDHaveDeviceList()) success = (psych_bool) HIDBuildDeviceList(0, 0);
    
    // This check can only be made against the 64-Bit HID Utilities, as the older 32-Bit
    // version is even more crappy and can't report meaningful error status:
    #if defined(__LP64__)
    if (!success) {
        printf("PsychHID-ERROR: Could not enumerate HID devices (HIDBuildDeviceList() failed)! There can be various reasons,\n");
        printf("PsychHID-ERROR: ranging from bugs in Apples HID software to a buggy HID device driver for some connected device,\n");
        printf("PsychHID-ERROR: to general operating system malfunction. A reboot or device driver update for 3rd party HID devices\n");
        printf("PsychHID-ERROR: maybe could help. Check the OSX system log for possible HID related error messages or hints. Aborting...\n");
        PsychErrorExitMsg(PsychError_system, "HID device enumeration failed due to malfunction in the OSX 64 Bit Apple HID Utilities framework.");
    }
    #endif
    
    // Double-Check to protect against pathetic Apple software:
    if (!HIDHaveDeviceList()) {
        printf("PsychHID-ERROR: Could not enumerate HID devices (HIDBuildDeviceList() success, but HIDHaveDeviceList() still failed)!\n");
        printf("PsychHID-ERROR: Reasons can be ranging from bugs in Apples HID software to a buggy HID device driver for some connected device,\n");
        printf("PsychHID-ERROR: to general operating system malfunction. A reboot or device driver update for 3rd party HID devices\n");
        printf("PsychHID-ERROR: maybe could help. Check the OSX system log for possible HID related error messages or hints. Aborting...\n");
        PsychErrorExitMsg(PsychError_system, "HID device enumeration failed due to malfunction in the OSX Apple HID Utilities framework (II).");
    }
    
    // Verify no security sensitive application is blocking our low-level access to HID devices:
	PsychHIDWarnInputDisabled(NULL);
    
    #if defined(__LP64__)
    // Try to load all bundles from Psychtoolbox/PsychHardware/
    // This loads the HID_Utilities.framework bundle if it is present. The whole point of it is
    // to allow our statically compiled-in version of the library to find the location of
    // the XML file with the database of (vendorId, productId) -> (VendorName, ProductName) and
    // (usagePage, usage) -> (usageName) mappings.
    //
    // In practice, the XML file only serves as a fallback, and one that doesn't contain much
    // useful info for mainstream products, only for a few niche products. Given its limited
    // value, i think we can refrain from shipping the framework as part of Psychtoolbox and
    // just provide the option to use it (== its XML file) if users decide to install it themselves.
    char tmpString[1024];
    
    sprintf(tmpString, "%sPsychHardware/", PsychRuntimeGetPsychtoolboxRoot(FALSE));
    CFStringRef urlString = CFStringCreateWithCString(kCFAllocatorDefault, tmpString, kCFStringEncodingASCII);
    CFURLRef directoryURL = CFURLCreateWithFileSystemPath(kCFAllocatorDefault, urlString, kCFURLPOSIXPathStyle, false);
    CFRelease(urlString);
    CFArrayRef bundleArray = CFBundleCreateBundlesFromDirectory(kCFAllocatorDefault, directoryURL, NULL);
    CFRelease(directoryURL);
    CFRelease(bundleArray);    
    #endif
}
/*
    PsychHIDCleanup() 
    
    Cleanup before flushing the mex file.   
*/
PsychError PsychHIDCleanup(void) 
{
	long error;

	error=PsychHIDReceiveReportsCleanup(); // PsychHIDReceiveReport.c
    if(HIDHaveDeviceList())HIDReleaseDeviceList();
    return(PsychError_none);
}
Esempio n. 4
0
void EndHIDInput (void)
{
	// remove timer
	if (gHIDTimer)
		RemoveEventLoopTimer (gHIDTimer);
	gHIDTimer = NULL;
	// dump array
	InitHIDInputArray ();
	// dump devices
	if (HIDHaveDeviceList())
		HIDReleaseDeviceList ();
}
unsigned char HIDConfigureSingleDeviceAction(IOHIDDeviceRef		inIOHIDDeviceRef,
                                             IOHIDElementRef *	outIOHIDElementRef,
                                             double				timeout) {
	if (!inIOHIDDeviceRef) {
		return (0);
	}
	if (0 == HIDHaveDeviceList()) {                                             // if we do not have a device list
		return (0);                                                             // return 0
	}

	Boolean found = false;

	// build list of device and elements to save current values
	CFIndex maxElements = HIDCountDeviceElements(inIOHIDDeviceRef,
	                                             kHIDElementTypeInput);
	double *saveValueArray = (double *) calloc(maxElements,
	                                           sizeof(double));                 // 2D array to save values

	// store initial values on first pass / compare to initial value on subsequent passes
	Boolean first = true;

	// get all the elements from this device
	CFArrayRef elementCFArrayRef = IOHIDDeviceCopyMatchingElements(inIOHIDDeviceRef,
	                                                               NULL,
	                                                               kIOHIDOptionsTypeNone);
	// if that worked...
	if (elementCFArrayRef) {
		clock_t start = clock(),
		        end;

		// poll all devices and elements
		while (!found) {
			uint32_t currElementIndex = 0;
			CFIndex idx,
			        cnt = CFArrayGetCount(elementCFArrayRef);
			for (idx = 0; idx < cnt; idx++) {
				*outIOHIDElementRef = (IOHIDElementRef) CFArrayGetValueAtIndex(elementCFArrayRef,
				                                                               idx);
				if (!*outIOHIDElementRef) {
					continue;
				}

				// is this an input element?
				IOHIDElementType type = IOHIDElementGetType(*outIOHIDElementRef);

				switch (type) {
					// these types are inputs
					case kIOHIDElementTypeInput_Misc:
					case kIOHIDElementTypeInput_Button:
					case kIOHIDElementTypeInput_Axis:
					case kIOHIDElementTypeInput_ScanCodes:
					default:
					{
						break;
					}

					case kIOHIDElementTypeOutput:
					case kIOHIDElementTypeFeature:
					case kIOHIDElementTypeCollection:
					{
						*outIOHIDElementRef = NULL;                             // these types are not (Skip them)
						break;
					}
				}                                                               /* switch */
				if (!*outIOHIDElementRef) {
					continue;                                                   // skip this element
				}

				// get this elements current value
				double value = 0;                                               // default value is zero
				IOHIDValueRef tIOHIDValueRef;
				IOReturn ioReturn = IOHIDDeviceGetValue(inIOHIDDeviceRef,
				                                        *outIOHIDElementRef,
				                                        &tIOHIDValueRef);
				if (kIOReturnSuccess == ioReturn) {
					value = IOHIDValueGetScaledValue(tIOHIDValueRef,
					                                 kIOHIDValueScaleTypePhysical);
				}
				if (first) {
					saveValueArray[currElementIndex] = value;
				} else {
					CFIndex min = IOHIDElementGetLogicalMin(*outIOHIDElementRef);
					CFIndex max = IOHIDElementGetLogicalMax(*outIOHIDElementRef);

					double initialValue = saveValueArray[currElementIndex];
					double delta = (double) (max -
					                         min) *
					               kPercentMove *
					               0.01f;
					// is the new value within +/- delta of the initial value?
					if (((initialValue +
					      delta) < value) ||
					    ((initialValue -
					      delta) > value))
					{
						found = 1;                                              // (yes!) mark as found
						break;
					}
				}                                                               // if (first)

				currElementIndex++;                                             // bump element index
			}                                                                   // next idx
			if (first) {
				first = false;                                                  // no longer the first pass
			} else {
				// are we done?
				end = clock();
				double secs = (double) (end -
				                        start) /
				              CLOCKS_PER_SEC;
				if (secs > timeout) {
					break;                                                      // (yes) timeout
				}
			}
		}                                                                       // while (!found)

		CFRelease(elementCFArrayRef);
	}                                                                           // if (elementCFArrayRef)
	if (saveValueArray) {
		free(saveValueArray);
	}
	// return device and element moved
	if (found) {
		return (1);
	} else {
		*outIOHIDElementRef = NULL;

		return (0);
	}
}                                                                               // HIDConfigureSingleDeviceAction
Esempio n. 6
0
unsigned char HIDConfigureAction (pRecDevice * ppDevice, pRecElement * ppElement, float timeout)
{
    unsigned long devices, maxElements = 0;
    long * saveValueArray;
    pRecDevice pDevice = NULL;
    pRecElement pElement = NULL;
    short deviceNum = 0;
    unsigned char found = 0, done = 0;
	clock_t start = clock (), end;
    unsigned long i;
    
     if (0 == HIDHaveDeviceList ())   // if we do not have a device list
		if (0 == HIDBuildDeviceList (0, 0)) // if we could not build anorther list (use generic usage and page)
			return 0; // return 0

    // build list of device and elements to save current values
    devices = HIDCountDevices ();
    pDevice = HIDGetFirstDevice ();
    while (pDevice)
    {
		if (HIDCountDeviceElements (pDevice, kHIDElementTypeIO) > maxElements)
			maxElements = HIDCountDeviceElements (pDevice, kHIDElementTypeIO);
		pDevice = HIDGetNextDevice (pDevice);
	}
	saveValueArray = (long *) malloc (sizeof (long) * devices * maxElements); // 2D array to save values
	for (i = 0; i < devices * maxElements; i++) // clear array
		*(saveValueArray + i) = 0x00000000;
		
	// store current values
	deviceNum = 0;
	pDevice = HIDGetFirstDevice ();
	while (pDevice)
	{
		short elementNum = 0;
		pElement = HIDGetFirstDeviceElement (pDevice, kHIDElementTypeIO);
		while (pElement)
		{
			*(saveValueArray + (deviceNum * maxElements) + elementNum) = HIDGetElementValue (pDevice, pElement);
			pElement = HIDGetNextDeviceElement (pElement, kHIDElementTypeIO); 
			elementNum++;
		}
		pDevice = HIDGetNextDevice (pDevice);
		deviceNum++;
    }
    
    // poll all devices and elements, compare current value to save +/- kPercentMove
    while ((!found) && (!done))
    {
		double secs;
		// are we done?
		end = clock();
		secs = (double)(end - start) / CLOCKS_PER_SEC;
		if (secs > timeout)
			done = 1;
		deviceNum = 0;
		pDevice = HIDGetFirstDevice ();
		while (pDevice)
		{
			short elementNum = 0;
			pElement = HIDGetFirstDeviceElement (pDevice, kHIDElementTypeIO);
			while (pElement)
			{
				long initialValue = *(saveValueArray + (deviceNum * maxElements) + elementNum);
				long value = HIDGetElementValue (pDevice, pElement);
				long delta = (float)(pElement->max - pElement->min) * kPercentMove * 0.01;
				if (((initialValue + delta) < value) || ((initialValue - delta) > value))
				{
					found = 1;
					break;
				}
				pElement = HIDGetNextDeviceElement (pElement, kHIDElementTypeIO); 
				elementNum++;
			}
			if (found)
				break;
			pDevice = HIDGetNextDevice (pDevice);
			deviceNum++;
		}
    }
    
    // return device and element moved
    if (found)
    {
		*ppDevice = pDevice;
		*ppElement = pElement;
		return 1;
    }
	else
	{
		*ppDevice = NULL;
		*ppElement = NULL;
		return 0;
	}
}
Esempio n. 7
0
/*
    PsychHIDCleanup() 
    
    Cleanup before flushing the mex file.   
*/
PsychError PsychHIDCleanup(void) 
{
	long error;
	pRecDevice curdev = NULL;
    
	// Disable online help system:
	PsychClearGiveHelp();

    // Disable any kind of low-level stdin<->tty magic for character reception
    // or suppression in console mode (for octave and matlab -nojvm):
    ConsoleInputHelper(-10);
    
	// Shutdown USB-HID report low-level functions, e.g., for DAQ toolbox on OS/X:
	error = PsychHIDReceiveReportsCleanup(); // PsychHIDReceiveReport.c
	
	// Shutdown os specific interfaces and routines:
	PsychHIDShutdownHIDStandardInterfaces();

	// Release all other HID device data structures:
	#if PSYCH_SYSTEM == PSYCH_OSX
        // Via Apple HIDUtils:
        #if (PSYCH_SYSTEM == PSYCH_OSX) && defined(__LP64__)
        int i;
        for (i = 0; i < MAXDEVICEINDEXS; i++) {
            if (deviceInterfaces[i]) {
                IOHIDDeviceInterface** interface = (IOHIDDeviceInterface**) deviceInterfaces[i];
                (*interface)->close(interface);
                (*interface)->Release(interface);
                deviceInterfaces[i] = NULL;
            }
        }
        #endif

        if(HIDHaveDeviceList()) HIDReleaseDeviceList();
	#else
        // Then our high-level list:
        while (hid_devices) {
            // Get current device record to release:
            curdev = hid_devices;
            
            // Advance to the next one for next loop iteration:
            hid_devices = hid_devices->pNext;
            
            // Interface attached aka device opened? If so we need to close the device handle:
            if (curdev->interface) hid_close((hid_device*) curdev->interface);
            
            // Release:
            free(curdev);
        }
        
        // Reset last hid device for error handling:
        last_hid_device = NULL;
        
        // Release the HIDLIB low-level device list:
        if (hidlib_devices) hid_free_enumeration(hidlib_devices);
        hidlib_devices = NULL;

        // Shutdown HIDAPI:
        hid_exit();

	#endif
    
	// Close and release all open generic USB devices:
	PsychHIDCloseAllUSBDevices();

	return(PsychError_none);
}
Esempio n. 8
0
void Controller::Setup()
{
	#if defined(WIN32)
		ZeroMemory( &_currentControllerRawState, sizeof(XINPUT_STATE));
		
		_dwResult = XInputGetState(_controllerID, &_currentControllerRawState);
		
		if (_dwResult == ERROR_SUCCESS)
		{
			sysLog.Printf("Controller %d connected!", _controllerID+1);
			_connected = true;
		}
		else
		{
			sysLog.Printf("Controller %d not present...", _controllerID+1);
			ZeroMemory( &_currentControllerRawState, sizeof(XINPUT_STATE));
			_currentControllerInput.LeftThumbstickX = 
			_currentControllerInput.LeftThumbstickY =
			_currentControllerInput.RightThumbstickX =
			_currentControllerInput.RightThumbstickY = 
			_currentControllerInput.LeftTriggerValue = 
			_currentControllerInput.RightTriggerValue = 
			_currentControllerInput.Buttons = 0;
			_connected = false;
		}
	
	#elif defined(__APPLE__)
		unsigned long usagePage = 0;
		unsigned long usage = 0;
		if (!HIDHaveDeviceList())
		{	
			HIDBuildDeviceList(usagePage, usage);
		}
		
		_device = HIDGetFirstDevice();
		while (_device != NULL)
		{
			//is this device already taken by another controller? 
			bool breakIt = false;
			for (int i=0; i < MAX_CONTROLLERS; i++)
			{
				Controller* check = &theControllerManager.GetController(i);
				if ((check != this) && (check->_device == _device))
				{
					_device = HIDGetNextDevice(_device);
					if (_device == NULL)
					{
						breakIt = true;
					}
				}
			}
			if (breakIt)
			{
				break;
			}
			
			std::string manufacturer = _device->manufacturer;
			std::string product = _device->product;
			if (manufacturer.length() > 0)
				manufacturer = manufacturer.substr(1, manufacturer.length()-1).c_str(); //trimming off the initial copyright symbol so matching won't be dumb
			if (
				((manufacturer == "Microsoft Corporation") && (product == "Controller"))
				|| ((manufacturer == "icrosoft") && (product == "Wireless 360 Controller"))
				)
			{
				sysLog.Printf("Controller %d connected!", _controllerID+1);
				_connected = true;
				break;
			}
			
			_device = HIDGetNextDevice(_device);
		}
		if (_device == NULL)
		{
			sysLog.Printf("Controller %d not present...", _controllerID+1);
			_connected = false;
		}
		else
		{
			pRecElement current_element = HIDGetFirstDeviceElement(_device, kHIDElementTypeIO);
			while (current_element != NULL)
			{
				_elements[(unsigned int)current_element->cookie] = current_element;
				current_element = HIDGetNextDeviceElement(current_element, kHIDElementTypeIO);
			}
		}
	#elif defined(__linux__)
		_currentControllerInput.LeftThumbstickX = 
		_currentControllerInput.LeftThumbstickY =
		_currentControllerInput.RightThumbstickX =
		_currentControllerInput.RightThumbstickY = 
		_currentControllerInput.LeftTriggerValue = 
		_currentControllerInput.RightTriggerValue = 
		_currentControllerInput.Buttons = 0;
		char* devicePath;
		if (_controllerID == 0)
			devicePath = LINUX_CONTROLLER_1_PATH;
		else
			devicePath = LINUX_CONTROLLER_2_PATH;

		_deviceFD = open(devicePath, O_RDONLY | O_NONBLOCK);
		if (_deviceFD < 0)
		{
			sysLog.Printf("Controller %d not present...", _controllerID+1);
			_connected = false;
		}
		else
		{
			sysLog.Printf("Controller %d connected!", _controllerID+1);
			_connected = true;
		}

		// Discover the force feedback device.
		bool foundFirstController = false;
		_ffFD = -1;
		for (int i = 0; i < MAX_LINUX_EVENT_INTERFACES; i++)
		{
			std::stringstream ss;
			ss << i;
			String eventDev = LINUX_EVENT_INTERFACE + ss.str();
			int fd = open(eventDev.c_str(), O_RDWR);
			if (fd >= 0)
		 	{
				char name[256] = "Unknown";
				ioctl(fd, EVIOCGNAME(sizeof(name)), name);
				if (strcmp(name, "Microsoft X-Box 360 pad") == 0)
				{
					if (_controllerID == 0)
					{
						_ffFD = fd;
						break;
					}
					else
					{
						if (foundFirstController)
						{
							_ffFD = fd;
							break;
						}
						else
						{
							foundFirstController = true;
							close(fd);
						}
					}
				}
				else
				{
					close(fd);
				}
			}
		}
		if (_ffFD < 0)
		{
			sysLog.Printf("Error opening Force Feedback device for controller %d!", _controllerID+1);
		}
		else
		{
			_ffEffect.type = FF_RUMBLE;
			_ffEffect.id = -1;
			_ffEffect.u.rumble.strong_magnitude = 0;
			_ffEffect.u.rumble.weak_magnitude = 0;
			_ffEffect.replay.length = 0x7fff;
			_ffEffect.replay.delay = 0;
			_ffPlay.type = EV_FF;
			_ffPlay.value = 1;
		}
	#endif
}
/*
    PSYCHHIDCheckInit() 
    
    Check to see if we need to create the device list.  If it has not been created then create it.   
*/
void PsychHIDVerifyInit(void)
{
    if(!HIDHaveDeviceList())HIDBuildDeviceList(NULL, NULL);
}
Esempio n. 10
0
/*
    PSYCHHIDCheckInit()

    Check to see if we need to create the USB-HID device list. If it has not been created then create it.
*/
void PsychHIDVerifyInit(void)
{
    // GenericDesktop for mice, keyboards, gamepads etc. vendor defined for things like MCC USB-DAQ boxes...
    UInt32 inUsagePages[2] = {kHIDPage_GenericDesktop, kHIDPage_VendorDefinedStart};
    UInt32 inUsages[2] = {0, 0};
    int inNumDeviceTypes = 2;
    psych_bool success = TRUE;

    // Build HID device list if it doesn't already exist:
    if (!HIDHaveDeviceList()) success = (psych_bool)HIDBuildDeviceList(0, 0);

    // This check can only be made against the 64-Bit HID Utilities, as the older 32-Bit
    // version is even more crappy and can't report meaningful error status:
    if (!success) {
        printf("PsychHID-ERROR: Could not enumerate and attach to all HID devices (HIDBuildDeviceList(0,0) failed)!\n");
        printf("PsychHID-ERROR: One reason could be that some HID devices are already exclusively claimed by some 3rd party device drivers\n");
        printf("PsychHID-ERROR: or applications. I will now retry to only claim control of a hopefully safe subset of devices like standard\n");
        printf("PsychHID-ERROR: keyboards, mice, gamepads and supported USB-DAQ devices and other vendor defined devices and hope this goes better...\n");

        // User override for special devices provided?
        if (getenv("PSYCHHID_HIDPAGEOVERRIDE")) {
            // Override via environment variable provided: Use it in addition to the generic desktop input devices:
            inUsagePages[1] = atoi(getenv("PSYCHHID_HIDPAGEOVERRIDE"));
            inUsages[1] = atoi(getenv("PSYCHHID_HIDUSAGEOVERRIDE"));
            printf("PsychHID-INFO: User override: Generic desktop page devices + usagePage 0x%x and usage value 0x%x ...\n", inUsagePages[1], inUsages[1]);
        }

        success = (psych_bool)HIDBuildMultiDeviceList(inUsagePages, inUsages, inNumDeviceTypes);
        if (!success) {
            printf("PsychHID-ERROR: Nope. Excluding everything but a few known USB-DAQ devices and standard mice, keyboards etc. Retrying ...\n");
            inUsagePages[1] = kHIDPage_VendorDefinedStart;
            inUsages[1] = 1; // Known combo is usagepage 0xff00 + usage 0x1 for MCC USB 1208-FS USB HID-DAQ device.
            success = (psych_bool)HIDBuildMultiDeviceList(inUsagePages, inUsages, inNumDeviceTypes);
        }

        if (!success) {
            printf("PsychHID-ERROR: Nope. Excluding everything but standard mice, keyboards etc. Retrying ...\n");
            success = (psych_bool)HIDBuildMultiDeviceList(inUsagePages, inUsages, 1);
            if (!success) {
                printf("PsychHID-ERROR: Could not enumerate any HID devices (HIDBuildDeviceList() still failed even for standard generic desktop input devices)!\n");
                printf("PsychHID-ERROR: Reasons can be ranging from bugs in Apples HID software to a buggy HID device driver for some connected device,\n");
                printf("PsychHID-ERROR: to general operating system malfunction. A reboot or device driver update for 3rd party HID devices\n");
                printf("PsychHID-ERROR: maybe could help. Check the OSX system log for possible HID related error messages or hints. Aborting...\n");
                PsychErrorExitMsg(PsychError_system, "HID device enumeration failed due to malfunction in the OSX 64 Bit Apple HID Utilities framework.");
            }
        }
        else {
            printf("PsychHID-INFO: That worked. A subset of regular mouse, keyboard etc. input devices and maybe some vendor defined devices will be available at least.\n");
        }
    }

    // Double-Check to protect against pathetic Apple software:
    if (!HIDHaveDeviceList()) {
        printf("PsychHID-ERROR: Could not enumerate HID devices (HIDBuildDeviceList() success, but HIDHaveDeviceList() still failed)!\n");
        printf("PsychHID-ERROR: Reasons can be ranging from bugs in Apples HID software to a buggy HID device driver for some connected device,\n");
        printf("PsychHID-ERROR: to general operating system malfunction. A reboot or device driver update for 3rd party HID devices\n");
        printf("PsychHID-ERROR: maybe could help. Check the OSX system log for possible HID related error messages or hints. Aborting...\n");
        PsychErrorExitMsg(PsychError_system, "HID device enumeration failed due to malfunction in the OSX Apple HID Utilities framework (II).");
    }

    // Verify no security sensitive application is blocking our low-level access to HID devices:
    PsychHIDWarnInputDisabled(NULL);
}