+++ /dev/null
-/*
- 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 <unistd.h>
-#include <ctype.h>
-#include <sysexits.h>
-#include <mach/mach.h>
-#include <mach/mach_error.h>
-#include <IOKit/IOKitLib.h>
-#include <IOKit/IOCFPlugIn.h>
-#ifdef MACOS_10_0_4
-#include <IOKit/hidsystem/IOHIDUsageTables.h>
-#else
-/* The header was moved here in Mac OS X 10.1 */
-#include <Kernel/IOKit/hidsystem/IOHIDUsageTables.h>
-#endif
-#include <IOKit/hid/IOHIDLib.h>
-#include <IOKit/hid/IOHIDKeys.h>
-#include <CoreFoundation/CoreFoundation.h>
-#include <Carbon/Carbon.h> /* for NewPtrClear, DisposePtr */
-
-/* For force feedback testing. */
-#include <ForceFeedback/ForceFeedback.h>
-#include <ForceFeedback/ForceFeedbackConstants.h>
-
-#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: */
notaz.gp2x.de / pcsx_rearmed.git / blobdiff