X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?p=pcsx_rearmed.git;a=blobdiff_plain;f=macosx%2Fplugins%2FDFInput%2FSDL%2Fsrc%2Fjoystick%2Fdarwin%2FSDL_sysjoystick.c;fp=macosx%2Fplugins%2FDFInput%2FSDL%2Fsrc%2Fjoystick%2Fdarwin%2FSDL_sysjoystick.c;h=0000000000000000000000000000000000000000;hp=824917f2da90b4307b366e7c77f7fcc2cfaad220;hb=aa1fc44b4532dc68be2482730a275f8a3ba8a039;hpb=ef79bbde537d6b9c745a7d86cb9df1d04c35590d diff --git a/macosx/plugins/DFInput/SDL/src/joystick/darwin/SDL_sysjoystick.c b/macosx/plugins/DFInput/SDL/src/joystick/darwin/SDL_sysjoystick.c deleted file mode 100644 index 824917f2..00000000 --- a/macosx/plugins/DFInput/SDL/src/joystick/darwin/SDL_sysjoystick.c +++ /dev/null @@ -1,847 +0,0 @@ -/* - SDL - Simple DirectMedia Layer - Copyright (C) 1997-2010 Sam Lantinga - - This library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - This library 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with this library; if not, write to the Free Software - Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - - Sam Lantinga - slouken@libsdl.org -*/ -#include "SDL_config.h" - -#ifdef SDL_JOYSTICK_IOKIT - -/* SDL joystick driver for Darwin / Mac OS X, based on the IOKit HID API */ -/* Written 2001 by Max Horn */ - -#include -#include -#include -#include -#include -#include -#include -#ifdef MACOS_10_0_4 -#include -#else -/* The header was moved here in Mac OS X 10.1 */ -#include -#endif -#include -#include -#include -#include /* for NewPtrClear, DisposePtr */ - -/* For force feedback testing. */ -#include -#include - -#include "SDL_joystick.h" -#include "../SDL_sysjoystick.h" -#include "../SDL_joystick_c.h" -#include "SDL_sysjoystick_c.h" - - -/* Linked list of all available devices */ -static recDevice *gpDeviceList = NULL; - - -static void -HIDReportErrorNum(char *strError, long numError) -{ - SDL_SetError(strError); -} - -static void HIDGetCollectionElements(CFMutableDictionaryRef deviceProperties, - recDevice * pDevice); - -/* returns current value for element, polling element - * will return 0 on error conditions which should be accounted for by application - */ - -static SInt32 -HIDGetElementValue(recDevice * pDevice, recElement * pElement) -{ - IOReturn result = kIOReturnSuccess; - IOHIDEventStruct hidEvent; - hidEvent.value = 0; - - if (NULL != pDevice && NULL != pElement && NULL != pDevice->interface) { - result = - (*(pDevice->interface))->getElementValue(pDevice->interface, - pElement->cookie, - &hidEvent); - if (kIOReturnSuccess == result) { - /* record min and max for auto calibration */ - if (hidEvent.value < pElement->minReport) - pElement->minReport = hidEvent.value; - if (hidEvent.value > pElement->maxReport) - pElement->maxReport = hidEvent.value; - } - } - - /* auto user scale */ - return hidEvent.value; -} - -static SInt32 -HIDScaledCalibratedValue(recDevice * pDevice, recElement * pElement, - long min, long max) -{ - float deviceScale = max - min; - float readScale = pElement->maxReport - pElement->minReport; - SInt32 value = HIDGetElementValue(pDevice, pElement); - if (readScale == 0) - return value; /* no scaling at all */ - else - return ((value - pElement->minReport) * deviceScale / readScale) + - min; -} - - -static void -HIDRemovalCallback(void *target, IOReturn result, void *refcon, void *sender) -{ - recDevice *device = (recDevice *) refcon; - device->removed = 1; - device->uncentered = 1; -} - - - -/* Create and open an interface to device, required prior to extracting values or building queues. - * Note: appliction now owns the device and must close and release it prior to exiting - */ - -static IOReturn -HIDCreateOpenDeviceInterface(io_object_t hidDevice, recDevice * pDevice) -{ - IOReturn result = kIOReturnSuccess; - HRESULT plugInResult = S_OK; - SInt32 score = 0; - IOCFPlugInInterface **ppPlugInInterface = NULL; - - if (NULL == pDevice->interface) { - result = - IOCreatePlugInInterfaceForService(hidDevice, - kIOHIDDeviceUserClientTypeID, - kIOCFPlugInInterfaceID, - &ppPlugInInterface, &score); - if (kIOReturnSuccess == result) { - /* Call a method of the intermediate plug-in to create the device interface */ - plugInResult = - (*ppPlugInInterface)->QueryInterface(ppPlugInInterface, - CFUUIDGetUUIDBytes - (kIOHIDDeviceInterfaceID), - (void *) - &(pDevice->interface)); - if (S_OK != plugInResult) - HIDReportErrorNum - ("CouldnÕt query HID class device interface from plugInInterface", - plugInResult); - (*ppPlugInInterface)->Release(ppPlugInInterface); - } else - HIDReportErrorNum - ("Failed to create **plugInInterface via IOCreatePlugInInterfaceForService.", - result); - } - if (NULL != pDevice->interface) { - result = (*(pDevice->interface))->open(pDevice->interface, 0); - if (kIOReturnSuccess != result) - HIDReportErrorNum - ("Failed to open pDevice->interface via open.", result); - else - (*(pDevice->interface))->setRemovalCallback(pDevice->interface, - HIDRemovalCallback, - pDevice, pDevice); - - } - return result; -} - -/* Closes and releases interface to device, should be done prior to exting application - * Note: will have no affect if device or interface do not exist - * application will "own" the device if interface is not closed - * (device may have to be plug and re-plugged in different location to get it working again without a restart) - */ - -static IOReturn -HIDCloseReleaseInterface(recDevice * pDevice) -{ - IOReturn result = kIOReturnSuccess; - - if ((NULL != pDevice) && (NULL != pDevice->interface)) { - /* close the interface */ - result = (*(pDevice->interface))->close(pDevice->interface); - if (kIOReturnNotOpen == result) { - /* do nothing as device was not opened, thus can't be closed */ - } else if (kIOReturnSuccess != result) - HIDReportErrorNum("Failed to close IOHIDDeviceInterface.", - result); - /* release the interface */ - result = (*(pDevice->interface))->Release(pDevice->interface); - if (kIOReturnSuccess != result) - HIDReportErrorNum("Failed to release IOHIDDeviceInterface.", - result); - pDevice->interface = NULL; - } - return result; -} - -/* extracts actual specific element information from each element CF dictionary entry */ - -static void -HIDGetElementInfo(CFTypeRef refElement, recElement * pElement) -{ - long number; - CFTypeRef refType; - - refType = CFDictionaryGetValue(refElement, CFSTR(kIOHIDElementCookieKey)); - if (refType && CFNumberGetValue(refType, kCFNumberLongType, &number)) - pElement->cookie = (IOHIDElementCookie) number; - refType = CFDictionaryGetValue(refElement, CFSTR(kIOHIDElementMinKey)); - if (refType && CFNumberGetValue(refType, kCFNumberLongType, &number)) - pElement->minReport = pElement->min = number; - pElement->maxReport = pElement->min; - refType = CFDictionaryGetValue(refElement, CFSTR(kIOHIDElementMaxKey)); - if (refType && CFNumberGetValue(refType, kCFNumberLongType, &number)) - pElement->maxReport = pElement->max = number; -/* - TODO: maybe should handle the following stuff somehow? - - refType = CFDictionaryGetValue (refElement, CFSTR(kIOHIDElementScaledMinKey)); - if (refType && CFNumberGetValue (refType, kCFNumberLongType, &number)) - pElement->scaledMin = number; - refType = CFDictionaryGetValue (refElement, CFSTR(kIOHIDElementScaledMaxKey)); - if (refType && CFNumberGetValue (refType, kCFNumberLongType, &number)) - pElement->scaledMax = number; - refType = CFDictionaryGetValue (refElement, CFSTR(kIOHIDElementSizeKey)); - if (refType && CFNumberGetValue (refType, kCFNumberLongType, &number)) - pElement->size = number; - refType = CFDictionaryGetValue (refElement, CFSTR(kIOHIDElementIsRelativeKey)); - if (refType) - pElement->relative = CFBooleanGetValue (refType); - refType = CFDictionaryGetValue (refElement, CFSTR(kIOHIDElementIsWrappingKey)); - if (refType) - pElement->wrapping = CFBooleanGetValue (refType); - refType = CFDictionaryGetValue (refElement, CFSTR(kIOHIDElementIsNonLinearKey)); - if (refType) - pElement->nonLinear = CFBooleanGetValue (refType); - refType = CFDictionaryGetValue (refElement, CFSTR(kIOHIDElementHasPreferedStateKey)); - if (refType) - pElement->preferredState = CFBooleanGetValue (refType); - refType = CFDictionaryGetValue (refElement, CFSTR(kIOHIDElementHasNullStateKey)); - if (refType) - pElement->nullState = CFBooleanGetValue (refType); -*/ -} - -/* examines CF dictionary vlaue in device element hierarchy to determine if it is element of interest or a collection of more elements - * if element of interest allocate storage, add to list and retrieve element specific info - * if collection then pass on to deconstruction collection into additional individual elements - */ - -static void -HIDAddElement(CFTypeRef refElement, recDevice * pDevice) -{ - recElement *element = NULL; - recElement **headElement = NULL; - long elementType, usagePage, usage; - CFTypeRef refElementType = - CFDictionaryGetValue(refElement, CFSTR(kIOHIDElementTypeKey)); - CFTypeRef refUsagePage = - CFDictionaryGetValue(refElement, CFSTR(kIOHIDElementUsagePageKey)); - CFTypeRef refUsage = - CFDictionaryGetValue(refElement, CFSTR(kIOHIDElementUsageKey)); - - - if ((refElementType) - && - (CFNumberGetValue(refElementType, kCFNumberLongType, &elementType))) { - /* look at types of interest */ - if ((elementType == kIOHIDElementTypeInput_Misc) - || (elementType == kIOHIDElementTypeInput_Button) - || (elementType == kIOHIDElementTypeInput_Axis)) { - if (refUsagePage - && CFNumberGetValue(refUsagePage, kCFNumberLongType, - &usagePage) && refUsage - && CFNumberGetValue(refUsage, kCFNumberLongType, &usage)) { - switch (usagePage) { /* only interested in kHIDPage_GenericDesktop and kHIDPage_Button */ - case kHIDPage_GenericDesktop: - { - switch (usage) { /* look at usage to determine function */ - case kHIDUsage_GD_X: - case kHIDUsage_GD_Y: - case kHIDUsage_GD_Z: - case kHIDUsage_GD_Rx: - case kHIDUsage_GD_Ry: - case kHIDUsage_GD_Rz: - case kHIDUsage_GD_Slider: - case kHIDUsage_GD_Dial: - case kHIDUsage_GD_Wheel: - element = (recElement *) - NewPtrClear(sizeof(recElement)); - if (element) { - pDevice->axes++; - headElement = &(pDevice->firstAxis); - } - break; - case kHIDUsage_GD_Hatswitch: - element = (recElement *) - NewPtrClear(sizeof(recElement)); - if (element) { - pDevice->hats++; - headElement = &(pDevice->firstHat); - } - break; - } - } - break; - case kHIDPage_Button: - element = (recElement *) - NewPtrClear(sizeof(recElement)); - if (element) { - pDevice->buttons++; - headElement = &(pDevice->firstButton); - } - break; - default: - break; - } - } - } else if (kIOHIDElementTypeCollection == elementType) - HIDGetCollectionElements((CFMutableDictionaryRef) refElement, - pDevice); - } - - if (element && headElement) { /* add to list */ - recElement *elementPrevious = NULL; - recElement *elementCurrent = *headElement; - while (elementCurrent && usage >= elementCurrent->usage) { - elementPrevious = elementCurrent; - elementCurrent = elementCurrent->pNext; - } - if (elementPrevious) { - elementPrevious->pNext = element; - } else { - *headElement = element; - } - element->usagePage = usagePage; - element->usage = usage; - element->pNext = elementCurrent; - HIDGetElementInfo(refElement, element); - pDevice->elements++; - } -} - -/* collects information from each array member in device element list (each array memeber = element) */ - -static void -HIDGetElementsCFArrayHandler(const void *value, void *parameter) -{ - if (CFGetTypeID(value) == CFDictionaryGetTypeID()) - HIDAddElement((CFTypeRef) value, (recDevice *) parameter); -} - -/* handles retrieval of element information from arrays of elements in device IO registry information */ - -static void -HIDGetElements(CFTypeRef refElementCurrent, recDevice * pDevice) -{ - CFTypeID type = CFGetTypeID(refElementCurrent); - if (type == CFArrayGetTypeID()) { /* if element is an array */ - CFRange range = { 0, CFArrayGetCount(refElementCurrent) }; - /* CountElementsCFArrayHandler called for each array member */ - CFArrayApplyFunction(refElementCurrent, range, - HIDGetElementsCFArrayHandler, pDevice); - } -} - -/* handles extracting element information from element collection CF types - * used from top level element decoding and hierarchy deconstruction to flatten device element list - */ - -static void -HIDGetCollectionElements(CFMutableDictionaryRef deviceProperties, - recDevice * pDevice) -{ - CFTypeRef refElementTop = - CFDictionaryGetValue(deviceProperties, CFSTR(kIOHIDElementKey)); - if (refElementTop) - HIDGetElements(refElementTop, pDevice); -} - -/* use top level element usage page and usage to discern device usage page and usage setting appropriate vlaues in device record */ - -static void -HIDTopLevelElementHandler(const void *value, void *parameter) -{ - CFTypeRef refCF = 0; - if (CFGetTypeID(value) != CFDictionaryGetTypeID()) - return; - refCF = CFDictionaryGetValue(value, CFSTR(kIOHIDElementUsagePageKey)); - if (!CFNumberGetValue - (refCF, kCFNumberLongType, &((recDevice *) parameter)->usagePage)) - SDL_SetError("CFNumberGetValue error retrieving pDevice->usagePage."); - refCF = CFDictionaryGetValue(value, CFSTR(kIOHIDElementUsageKey)); - if (!CFNumberGetValue - (refCF, kCFNumberLongType, &((recDevice *) parameter)->usage)) - SDL_SetError("CFNumberGetValue error retrieving pDevice->usage."); -} - -/* extracts device info from CF dictionary records in IO registry */ - -static void -HIDGetDeviceInfo(io_object_t hidDevice, CFMutableDictionaryRef hidProperties, - recDevice * pDevice) -{ - CFMutableDictionaryRef usbProperties = 0; - io_registry_entry_t parent1, parent2; - - /* Mac OS X currently is not mirroring all USB properties to HID page so need to look at USB device page also - * get dictionary for usb properties: step up two levels and get CF dictionary for USB properties - */ - if ((KERN_SUCCESS == - IORegistryEntryGetParentEntry(hidDevice, kIOServicePlane, &parent1)) - && (KERN_SUCCESS == - IORegistryEntryGetParentEntry(parent1, kIOServicePlane, &parent2)) - && (KERN_SUCCESS == - IORegistryEntryCreateCFProperties(parent2, &usbProperties, - kCFAllocatorDefault, - kNilOptions))) { - if (usbProperties) { - CFTypeRef refCF = 0; - /* get device info - * try hid dictionary first, if fail then go to usb dictionary - */ - - - /* get product name */ - refCF = - CFDictionaryGetValue(hidProperties, CFSTR(kIOHIDProductKey)); - if (!refCF) - refCF = - CFDictionaryGetValue(usbProperties, - CFSTR("USB Product Name")); - if (refCF) { - if (!CFStringGetCString - (refCF, pDevice->product, 256, - CFStringGetSystemEncoding())) - SDL_SetError - ("CFStringGetCString error retrieving pDevice->product."); - } - - /* get usage page and usage */ - refCF = - CFDictionaryGetValue(hidProperties, - CFSTR(kIOHIDPrimaryUsagePageKey)); - if (refCF) { - if (!CFNumberGetValue - (refCF, kCFNumberLongType, &pDevice->usagePage)) - SDL_SetError - ("CFNumberGetValue error retrieving pDevice->usagePage."); - refCF = - CFDictionaryGetValue(hidProperties, - CFSTR(kIOHIDPrimaryUsageKey)); - if (refCF) - if (!CFNumberGetValue - (refCF, kCFNumberLongType, &pDevice->usage)) - SDL_SetError - ("CFNumberGetValue error retrieving pDevice->usage."); - } - - if (NULL == refCF) { /* get top level element HID usage page or usage */ - /* use top level element instead */ - CFTypeRef refCFTopElement = 0; - refCFTopElement = - CFDictionaryGetValue(hidProperties, - CFSTR(kIOHIDElementKey)); - { - /* refCFTopElement points to an array of element dictionaries */ - CFRange range = { 0, CFArrayGetCount(refCFTopElement) }; - CFArrayApplyFunction(refCFTopElement, range, - HIDTopLevelElementHandler, pDevice); - } - } - - CFRelease(usbProperties); - } else - SDL_SetError - ("IORegistryEntryCreateCFProperties failed to create usbProperties."); - - if (kIOReturnSuccess != IOObjectRelease(parent2)) - SDL_SetError("IOObjectRelease error with parent2."); - if (kIOReturnSuccess != IOObjectRelease(parent1)) - SDL_SetError("IOObjectRelease error with parent1."); - } -} - - -static recDevice * -HIDBuildDevice(io_object_t hidDevice) -{ - recDevice *pDevice = (recDevice *) NewPtrClear(sizeof(recDevice)); - if (pDevice) { - /* get dictionary for HID properties */ - CFMutableDictionaryRef hidProperties = 0; - kern_return_t result = - IORegistryEntryCreateCFProperties(hidDevice, &hidProperties, - kCFAllocatorDefault, - kNilOptions); - if ((result == KERN_SUCCESS) && hidProperties) { - /* create device interface */ - result = HIDCreateOpenDeviceInterface(hidDevice, pDevice); - if (kIOReturnSuccess == result) { - HIDGetDeviceInfo(hidDevice, hidProperties, pDevice); /* hidDevice used to find parents in registry tree */ - HIDGetCollectionElements(hidProperties, pDevice); - } else { - DisposePtr((Ptr) pDevice); - pDevice = NULL; - } - CFRelease(hidProperties); - } else { - DisposePtr((Ptr) pDevice); - pDevice = NULL; - } - } - return pDevice; -} - -/* disposes of the element list associated with a device and the memory associated with the list - */ - -static void -HIDDisposeElementList(recElement ** elementList) -{ - recElement *pElement = *elementList; - while (pElement) { - recElement *pElementNext = pElement->pNext; - DisposePtr((Ptr) pElement); - pElement = pElementNext; - } - *elementList = NULL; -} - -/* disposes of a single device, closing and releaseing interface, freeing memory fro device and elements, setting device pointer to NULL - * all your device no longer belong to us... (i.e., you do not 'own' the device anymore) - */ - -static recDevice * -HIDDisposeDevice(recDevice ** ppDevice) -{ - kern_return_t result = KERN_SUCCESS; - recDevice *pDeviceNext = NULL; - if (*ppDevice) { - /* save next device prior to disposing of this device */ - pDeviceNext = (*ppDevice)->pNext; - - /* free posible io_service_t */ - if ((*ppDevice)->ffservice) { - IOObjectRelease((*ppDevice)->ffservice); - (*ppDevice)->ffservice = 0; - } - - /* free element lists */ - HIDDisposeElementList(&(*ppDevice)->firstAxis); - HIDDisposeElementList(&(*ppDevice)->firstButton); - HIDDisposeElementList(&(*ppDevice)->firstHat); - - result = HIDCloseReleaseInterface(*ppDevice); /* function sanity checks interface value (now application does not own device) */ - if (kIOReturnSuccess != result) - HIDReportErrorNum - ("HIDCloseReleaseInterface failed when trying to dipose device.", - result); - DisposePtr((Ptr) * ppDevice); - *ppDevice = NULL; - } - return pDeviceNext; -} - - -/* Function to scan the system for joysticks. - * Joystick 0 should be the system default joystick. - * This function should return the number of available joysticks, or -1 - * on an unrecoverable fatal error. - */ -int -SDL_SYS_JoystickInit(void) -{ - IOReturn result = kIOReturnSuccess; - mach_port_t masterPort = 0; - io_iterator_t hidObjectIterator = 0; - CFMutableDictionaryRef hidMatchDictionary = NULL; - recDevice *device, *lastDevice; - io_object_t ioHIDDeviceObject = 0; - - SDL_numjoysticks = 0; - - if (gpDeviceList) { - SDL_SetError("Joystick: Device list already inited."); - return -1; - } - - result = IOMasterPort(bootstrap_port, &masterPort); - if (kIOReturnSuccess != result) { - SDL_SetError("Joystick: IOMasterPort error with bootstrap_port."); - return -1; - } - - /* Set up a matching dictionary to search I/O Registry by class name for all HID class devices. */ - hidMatchDictionary = IOServiceMatching(kIOHIDDeviceKey); - if (hidMatchDictionary) { - /* Add key for device type (joystick, in this case) to refine the matching dictionary. */ - - /* NOTE: we now perform this filtering later - UInt32 usagePage = kHIDPage_GenericDesktop; - UInt32 usage = kHIDUsage_GD_Joystick; - CFNumberRef refUsage = NULL, refUsagePage = NULL; - - refUsage = CFNumberCreate (kCFAllocatorDefault, kCFNumberIntType, &usage); - CFDictionarySetValue (hidMatchDictionary, CFSTR (kIOHIDPrimaryUsageKey), refUsage); - refUsagePage = CFNumberCreate (kCFAllocatorDefault, kCFNumberIntType, &usagePage); - CFDictionarySetValue (hidMatchDictionary, CFSTR (kIOHIDPrimaryUsagePageKey), refUsagePage); - */ - } else { - SDL_SetError - ("Joystick: Failed to get HID CFMutableDictionaryRef via IOServiceMatching."); - return -1; - } - - /*/ Now search I/O Registry for matching devices. */ - result = - IOServiceGetMatchingServices(masterPort, hidMatchDictionary, - &hidObjectIterator); - /* Check for errors */ - if (kIOReturnSuccess != result) { - SDL_SetError("Joystick: Couldn't create a HID object iterator."); - return -1; - } - if (!hidObjectIterator) { /* there are no joysticks */ - gpDeviceList = NULL; - SDL_numjoysticks = 0; - return 0; - } - /* IOServiceGetMatchingServices consumes a reference to the dictionary, so we don't need to release the dictionary ref. */ - - /* build flat linked list of devices from device iterator */ - - gpDeviceList = lastDevice = NULL; - - while ((ioHIDDeviceObject = IOIteratorNext(hidObjectIterator))) { - /* build a device record */ - device = HIDBuildDevice(ioHIDDeviceObject); - if (!device) - continue; - - /* Filter device list to non-keyboard/mouse stuff */ - if ((device->usagePage != kHIDPage_GenericDesktop) || - ((device->usage != kHIDUsage_GD_Joystick && - device->usage != kHIDUsage_GD_GamePad && - device->usage != kHIDUsage_GD_MultiAxisController))) { - - /* release memory for the device */ - HIDDisposeDevice(&device); - DisposePtr((Ptr) device); - continue; - } - - /* We have to do some storage of the io_service_t for - * SDL_HapticOpenFromJoystick */ - if (FFIsForceFeedback(ioHIDDeviceObject) == FF_OK) { - device->ffservice = ioHIDDeviceObject; - } else { - device->ffservice = 0; - } - - /* Add device to the end of the list */ - if (lastDevice) - lastDevice->pNext = device; - else - gpDeviceList = device; - lastDevice = device; - } - result = IOObjectRelease(hidObjectIterator); /* release the iterator */ - - /* Count the total number of devices we found */ - device = gpDeviceList; - while (device) { - SDL_numjoysticks++; - device = device->pNext; - } - - return SDL_numjoysticks; -} - -/* Function to get the device-dependent name of a joystick */ -const char * -SDL_SYS_JoystickName(int index) -{ - recDevice *device = gpDeviceList; - - for (; index > 0; index--) - device = device->pNext; - - return device->product; -} - -/* Function to open a joystick for use. - * The joystick to open is specified by the index field of the joystick. - * This should fill the nbuttons and naxes fields of the joystick structure. - * It returns 0, or -1 if there is an error. - */ -int -SDL_SYS_JoystickOpen(SDL_Joystick * joystick) -{ - recDevice *device = gpDeviceList; - int index; - - for (index = joystick->index; index > 0; index--) - device = device->pNext; - - joystick->hwdata = device; - joystick->name = device->product; - - joystick->naxes = device->axes; - joystick->nhats = device->hats; - joystick->nballs = 0; - joystick->nbuttons = device->buttons; - - return 0; -} - -/* Function to update the state of a joystick - called as a device poll. - * This function shouldn't update the joystick structure directly, - * but instead should call SDL_PrivateJoystick*() to deliver events - * and update joystick device state. - */ -void -SDL_SYS_JoystickUpdate(SDL_Joystick * joystick) -{ - recDevice *device = joystick->hwdata; - recElement *element; - SInt32 value, range; - int i; - - if (device->removed) { /* device was unplugged; ignore it. */ - if (device->uncentered) { - device->uncentered = 0; - - /* Tell the app that everything is centered/unpressed... */ - for (i = 0; i < device->axes; i++) - SDL_PrivateJoystickAxis(joystick, i, 0); - - for (i = 0; i < device->buttons; i++) - SDL_PrivateJoystickButton(joystick, i, 0); - - for (i = 0; i < device->hats; i++) - SDL_PrivateJoystickHat(joystick, i, SDL_HAT_CENTERED); - } - - return; - } - - element = device->firstAxis; - i = 0; - while (element) { - value = HIDScaledCalibratedValue(device, element, -32768, 32767); - if (value != joystick->axes[i]) - SDL_PrivateJoystickAxis(joystick, i, value); - element = element->pNext; - ++i; - } - - element = device->firstButton; - i = 0; - while (element) { - value = HIDGetElementValue(device, element); - if (value > 1) /* handle pressure-sensitive buttons */ - value = 1; - if (value != joystick->buttons[i]) - SDL_PrivateJoystickButton(joystick, i, value); - element = element->pNext; - ++i; - } - - element = device->firstHat; - i = 0; - while (element) { - Uint8 pos = 0; - - range = (element->max - element->min + 1); - value = HIDGetElementValue(device, element) - element->min; - if (range == 4) /* 4 position hatswitch - scale up value */ - value *= 2; - else if (range != 8) /* Neither a 4 nor 8 positions - fall back to default position (centered) */ - value = -1; - switch (value) { - case 0: - pos = SDL_HAT_UP; - break; - case 1: - pos = SDL_HAT_RIGHTUP; - break; - case 2: - pos = SDL_HAT_RIGHT; - break; - case 3: - pos = SDL_HAT_RIGHTDOWN; - break; - case 4: - pos = SDL_HAT_DOWN; - break; - case 5: - pos = SDL_HAT_LEFTDOWN; - break; - case 6: - pos = SDL_HAT_LEFT; - break; - case 7: - pos = SDL_HAT_LEFTUP; - break; - default: - /* Every other value is mapped to center. We do that because some - * joysticks use 8 and some 15 for this value, and apparently - * there are even more variants out there - so we try to be generous. - */ - pos = SDL_HAT_CENTERED; - break; - } - if (pos != joystick->hats[i]) - SDL_PrivateJoystickHat(joystick, i, pos); - element = element->pNext; - ++i; - } - - return; -} - -/* Function to close a joystick after use */ -void -SDL_SYS_JoystickClose(SDL_Joystick * joystick) -{ - /* Should we do anything here? */ - return; -} - -/* Function to perform any system-specific joystick related cleanup */ -void -SDL_SYS_JoystickQuit(void) -{ - while (NULL != gpDeviceList) - gpDeviceList = HIDDisposeDevice(&gpDeviceList); -} - -#endif /* SDL_JOYSTICK_IOKIT */ -/* vi: set ts=4 sw=4 expandtab: */