diff options
Diffstat (limited to 'distrib/sdl-1.2.12/src/joystick/darwin/SDL_sysjoystick.c')
| -rw-r--r-- | distrib/sdl-1.2.12/src/joystick/darwin/SDL_sysjoystick.c | 841 |
1 files changed, 0 insertions, 841 deletions
diff --git a/distrib/sdl-1.2.12/src/joystick/darwin/SDL_sysjoystick.c b/distrib/sdl-1.2.12/src/joystick/darwin/SDL_sysjoystick.c deleted file mode 100644 index 8fd983e..0000000 --- a/distrib/sdl-1.2.12/src/joystick/darwin/SDL_sysjoystick.c +++ /dev/null @@ -1,841 +0,0 @@ -/* - SDL - Simple DirectMedia Layer - Copyright (C) 1997-2004 Sam Lantinga - - This library is free software; you can redistribute it and/or - modify it under the terms of the GNU Library General Public - License as published by the Free Software Foundation; either - version 2 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 - Library General Public License for more details. - - You should have received a copy of the GNU Library General Public - License along with this library; if not, write to the Free - Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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 */ - -#include "SDL_joystick.h" -#include "../SDL_sysjoystick.h" -#include "../SDL_joystick_c.h" - -struct recElement -{ - IOHIDElementCookie cookie; /* unique value which identifies element, will NOT change */ - long min; /* reported min value possible */ - long max; /* reported max value possible */ -#if 0 - /* TODO: maybe should handle the following stuff somehow? */ - - long scaledMin; /* reported scaled min value possible */ - long scaledMax; /* reported scaled max value possible */ - long size; /* size in bits of data return from element */ - Boolean relative; /* are reports relative to last report (deltas) */ - Boolean wrapping; /* does element wrap around (one value higher than max is min) */ - Boolean nonLinear; /* are the values reported non-linear relative to element movement */ - Boolean preferredState; /* does element have a preferred state (such as a button) */ - Boolean nullState; /* does element have null state */ -#endif /* 0 */ - - /* runtime variables used for auto-calibration */ - long minReport; /* min returned value */ - long maxReport; /* max returned value */ - - struct recElement * pNext; /* next element in list */ -}; -typedef struct recElement recElement; - -struct joystick_hwdata -{ - IOHIDDeviceInterface ** interface; /* interface to device, NULL = no interface */ - - char product[256]; /* name of product */ - long usage; /* usage page from IOUSBHID Parser.h which defines general usage */ - long usagePage; /* usage within above page from IOUSBHID Parser.h which defines specific usage */ - - long axes; /* number of axis (calculated, not reported by device) */ - long buttons; /* number of buttons (calculated, not reported by device) */ - long hats; /* number of hat switches (calculated, not reported by device) */ - long elements; /* number of total elements (shouldbe total of above) (calculated, not reported by device) */ - - recElement* firstAxis; - recElement* firstButton; - recElement* firstHat; - - int removed; - int uncentered; - - struct joystick_hwdata* pNext; /* next device */ -}; -typedef struct joystick_hwdata recDevice; - - -/* 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 ("CouldnŐt 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; - 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 */ - { - pDevice->elements++; - if (NULL == *headElement) - *headElement = element; - else - { - recElement *elementPrevious, *elementCurrent; - elementCurrent = *headElement; - while (elementCurrent) - { - elementPrevious = elementCurrent; - elementCurrent = elementPrevious->pNext; - } - elementPrevious->pNext = element; - } - element->pNext = NULL; - HIDGetElementInfo (refElement, element); - } -} - -/* 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 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; - - /* dump device object, it is no longer needed */ - result = IOObjectRelease (ioHIDDeviceObject); -/* if (KERN_SUCCESS != result) - HIDReportErrorNum ("IOObjectRelease error with ioHIDDeviceObject.", result); -*/ - - /* 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; - } - - /* 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; - 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; - - value = HIDGetElementValue(device, element); - if (element->max == 3) /* 4 position hatswitch - scale up value */ - value *= 2; - else if (element->max != 7) /* 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 */ |