SDL_sysjoystick.c
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2019 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "../../SDL_internal.h"
#ifdef SDL_JOYSTICK_IOKIT
#include "SDL_events.h"
#include "SDL_joystick.h"
#include "../SDL_sysjoystick.h"
#include "../SDL_joystick_c.h"
#include "SDL_sysjoystick_c.h"
#include "../hidapi/SDL_hidapijoystick_c.h"
#include "../../haptic/darwin/SDL_syshaptic_c.h" /* For haptic hot plugging */
#define SDL_JOYSTICK_RUNLOOP_MODE CFSTR("SDLJoystick")
#define CONVERT_MAGNITUDE(x) (((x)*10000) / 0x7FFF)
/* The base object of the HID Manager API */
static IOHIDManagerRef hidman = NULL;
/* Linked list of all available devices */
static recDevice *gpDeviceList = NULL;
void FreeRumbleEffectData(FFEFFECT *effect)
{
if (!effect) {
return;
}
SDL_free(effect->rgdwAxes);
SDL_free(effect->rglDirection);
SDL_free(effect->lpvTypeSpecificParams);
SDL_free(effect);
}
FFEFFECT *CreateRumbleEffectData(Sint16 magnitude, Uint32 duration_ms)
{
FFEFFECT *effect;
FFPERIODIC *periodic;
/* Create the effect */
effect = (FFEFFECT *)SDL_calloc(1, sizeof(*effect));
if (!effect) {
return NULL;
}
effect->dwSize = sizeof(*effect);
effect->dwGain = 10000;
effect->dwFlags = FFEFF_OBJECTOFFSETS;
effect->dwDuration = duration_ms * 1000; /* In microseconds. */
effect->dwTriggerButton = FFEB_NOTRIGGER;
effect->cAxes = 2;
effect->rgdwAxes = (DWORD *)SDL_calloc(effect->cAxes, sizeof(DWORD));
if (!effect->rgdwAxes) {
FreeRumbleEffectData(effect);
return NULL;
}
effect->rglDirection = (LONG *)SDL_calloc(effect->cAxes, sizeof(LONG));
if (!effect->rglDirection) {
FreeRumbleEffectData(effect);
return NULL;
}
effect->dwFlags |= FFEFF_CARTESIAN;
periodic = (FFPERIODIC *)SDL_calloc(1, sizeof(*periodic));
if (!periodic) {
FreeRumbleEffectData(effect);
return NULL;
}
periodic->dwMagnitude = CONVERT_MAGNITUDE(magnitude);
periodic->dwPeriod = 1000000;
effect->cbTypeSpecificParams = sizeof(*periodic);
effect->lpvTypeSpecificParams = periodic;
return effect;
}
static recDevice *GetDeviceForIndex(int device_index)
{
recDevice *device = gpDeviceList;
while (device) {
if (!device->removed) {
if (device_index == 0)
break;
--device_index;
}
device = device->pNext;
}
return device;
}
static void
FreeElementList(recElement *pElement)
{
while (pElement) {
recElement *pElementNext = pElement->pNext;
SDL_free(pElement);
pElement = pElementNext;
}
}
static recDevice *
FreeDevice(recDevice *removeDevice)
{
recDevice *pDeviceNext = NULL;
if (removeDevice) {
if (removeDevice->deviceRef) {
IOHIDDeviceUnscheduleFromRunLoop(removeDevice->deviceRef, CFRunLoopGetCurrent(), SDL_JOYSTICK_RUNLOOP_MODE);
removeDevice->deviceRef = NULL;
}
/* save next device prior to disposing of this device */
pDeviceNext = removeDevice->pNext;
if ( gpDeviceList == removeDevice ) {
gpDeviceList = pDeviceNext;
} else {
recDevice *device = gpDeviceList;
while (device->pNext != removeDevice) {
device = device->pNext;
}
device->pNext = pDeviceNext;
}
removeDevice->pNext = NULL;
/* free element lists */
FreeElementList(removeDevice->firstAxis);
FreeElementList(removeDevice->firstButton);
FreeElementList(removeDevice->firstHat);
SDL_free(removeDevice);
}
return pDeviceNext;
}
static SDL_bool
GetHIDElementState(recDevice *pDevice, recElement *pElement, SInt32 *pValue)
{
SInt32 value = 0;
int returnValue = SDL_FALSE;
if (pDevice && pElement) {
IOHIDValueRef valueRef;
if (IOHIDDeviceGetValue(pDevice->deviceRef, pElement->elementRef, &valueRef) == kIOReturnSuccess) {
value = (SInt32) IOHIDValueGetIntegerValue(valueRef);
/* record min and max for auto calibration */
if (value < pElement->minReport) {
pElement->minReport = value;
}
if (value > pElement->maxReport) {
pElement->maxReport = value;
}
*pValue = value;
returnValue = SDL_TRUE;
}
}
return returnValue;
}
static SDL_bool
GetHIDScaledCalibratedState(recDevice * pDevice, recElement * pElement, SInt32 min, SInt32 max, SInt32 *pValue)
{
const float deviceScale = max - min;
const float readScale = pElement->maxReport - pElement->minReport;
int returnValue = SDL_FALSE;
if (GetHIDElementState(pDevice, pElement, pValue))
{
if (readScale == 0) {
returnValue = SDL_TRUE; /* no scaling at all */
}
else
{
*pValue = ((*pValue - pElement->minReport) * deviceScale / readScale) + min;
returnValue = SDL_TRUE;
}
}
return returnValue;
}
static void
JoystickDeviceWasRemovedCallback(void *ctx, IOReturn result, void *sender)
{
recDevice *device = (recDevice *) ctx;
device->removed = SDL_TRUE;
device->deviceRef = NULL; // deviceRef was invalidated due to the remove
if (device->ffeffect_ref) {
FFDeviceReleaseEffect(device->ffdevice, device->ffeffect_ref);
device->ffeffect_ref = NULL;
}
if (device->ffeffect) {
FreeRumbleEffectData(device->ffeffect);
device->ffeffect = NULL;
}
if (device->ffdevice) {
FFReleaseDevice(device->ffdevice);
device->ffdevice = NULL;
device->ff_initialized = SDL_FALSE;
}
#if SDL_HAPTIC_IOKIT
MacHaptic_MaybeRemoveDevice(device->ffservice);
#endif
SDL_PrivateJoystickRemoved(device->instance_id);
}
static void AddHIDElement(const void *value, void *parameter);
/* Call AddHIDElement() on all elements in an array of IOHIDElementRefs */
static void
AddHIDElements(CFArrayRef array, recDevice *pDevice)
{
const CFRange range = { 0, CFArrayGetCount(array) };
CFArrayApplyFunction(array, range, AddHIDElement, pDevice);
}
static SDL_bool
ElementAlreadyAdded(const IOHIDElementCookie cookie, const recElement *listitem) {
while (listitem) {
if (listitem->cookie == cookie) {
return SDL_TRUE;
}
listitem = listitem->pNext;
}
return SDL_FALSE;
}
/* See if we care about this HID element, and if so, note it in our recDevice. */
static void
AddHIDElement(const void *value, void *parameter)
{
recDevice *pDevice = (recDevice *) parameter;
IOHIDElementRef refElement = (IOHIDElementRef) value;
const CFTypeID elementTypeID = refElement ? CFGetTypeID(refElement) : 0;
if (refElement && (elementTypeID == IOHIDElementGetTypeID())) {
const IOHIDElementCookie cookie = IOHIDElementGetCookie(refElement);
const uint32_t usagePage = IOHIDElementGetUsagePage(refElement);
const uint32_t usage = IOHIDElementGetUsage(refElement);
recElement *element = NULL;
recElement **headElement = NULL;
/* look at types of interest */
switch (IOHIDElementGetType(refElement)) {
case kIOHIDElementTypeInput_Misc:
case kIOHIDElementTypeInput_Button:
case kIOHIDElementTypeInput_Axis: {
switch (usagePage) { /* only interested in kHIDPage_GenericDesktop and kHIDPage_Button */
case kHIDPage_GenericDesktop:
switch (usage) {
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:
if (!ElementAlreadyAdded(cookie, pDevice->firstAxis)) {
element = (recElement *) SDL_calloc(1, sizeof (recElement));
if (element) {
pDevice->axes++;
headElement = &(pDevice->firstAxis);
}
}
break;
case kHIDUsage_GD_Hatswitch:
if (!ElementAlreadyAdded(cookie, pDevice->firstHat)) {
element = (recElement *) SDL_calloc(1, sizeof (recElement));
if (element) {
pDevice->hats++;
headElement = &(pDevice->firstHat);
}
}
break;
case kHIDUsage_GD_DPadUp:
case kHIDUsage_GD_DPadDown:
case kHIDUsage_GD_DPadRight:
case kHIDUsage_GD_DPadLeft:
case kHIDUsage_GD_Start:
case kHIDUsage_GD_Select:
case kHIDUsage_GD_SystemMainMenu:
if (!ElementAlreadyAdded(cookie, pDevice->firstButton)) {
element = (recElement *) SDL_calloc(1, sizeof (recElement));
if (element) {
pDevice->buttons++;
headElement = &(pDevice->firstButton);
}
}
break;
}
break;
case kHIDPage_Simulation:
switch (usage) {
case kHIDUsage_Sim_Rudder:
case kHIDUsage_Sim_Throttle:
case kHIDUsage_Sim_Accelerator:
case kHIDUsage_Sim_Brake:
if (!ElementAlreadyAdded(cookie, pDevice->firstAxis)) {
element = (recElement *) SDL_calloc(1, sizeof (recElement));
if (element) {
pDevice->axes++;
headElement = &(pDevice->firstAxis);
}
}
break;
default:
break;
}
break;
case kHIDPage_Button:
case kHIDPage_Consumer: /* e.g. 'pause' button on Steelseries MFi gamepads. */
if (!ElementAlreadyAdded(cookie, pDevice->firstButton)) {
element = (recElement *) SDL_calloc(1, sizeof (recElement));
if (element) {
pDevice->buttons++;
headElement = &(pDevice->firstButton);
}
}
break;
default:
break;
}
}
break;
case kIOHIDElementTypeCollection: {
CFArrayRef array = IOHIDElementGetChildren(refElement);
if (array) {
AddHIDElements(array, pDevice);
}
}
break;
default:
break;
}
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->elementRef = refElement;
element->usagePage = usagePage;
element->usage = usage;
element->pNext = elementCurrent;
element->minReport = element->min = (SInt32) IOHIDElementGetLogicalMin(refElement);
element->maxReport = element->max = (SInt32) IOHIDElementGetLogicalMax(refElement);
element->cookie = IOHIDElementGetCookie(refElement);
pDevice->elements++;
}
}
}
static SDL_bool
GetDeviceInfo(IOHIDDeviceRef hidDevice, recDevice *pDevice)
{
Sint32 vendor = 0;
Sint32 product = 0;
Sint32 version = 0;
CFTypeRef refCF = NULL;
CFArrayRef array = NULL;
Uint16 *guid16 = (Uint16 *)pDevice->guid.data;
/* get usage page and usage */
refCF = IOHIDDeviceGetProperty(hidDevice, CFSTR(kIOHIDPrimaryUsagePageKey));
if (refCF) {
CFNumberGetValue(refCF, kCFNumberSInt32Type, &pDevice->usagePage);
}
if (pDevice->usagePage != kHIDPage_GenericDesktop) {
return SDL_FALSE; /* Filter device list to non-keyboard/mouse stuff */
}
refCF = IOHIDDeviceGetProperty(hidDevice, CFSTR(kIOHIDPrimaryUsageKey));
if (refCF) {
CFNumberGetValue(refCF, kCFNumberSInt32Type, &pDevice->usage);
}
if ((pDevice->usage != kHIDUsage_GD_Joystick &&
pDevice->usage != kHIDUsage_GD_GamePad &&
pDevice->usage != kHIDUsage_GD_MultiAxisController)) {
return SDL_FALSE; /* Filter device list to non-keyboard/mouse stuff */
}
pDevice->deviceRef = hidDevice;
/* get device name */
refCF = IOHIDDeviceGetProperty(hidDevice, CFSTR(kIOHIDProductKey));
if (!refCF) {
/* Maybe we can't get "AwesomeJoystick2000", but we can get "Logitech"? */
refCF = IOHIDDeviceGetProperty(hidDevice, CFSTR(kIOHIDManufacturerKey));
}
if ((!refCF) || (!CFStringGetCString(refCF, pDevice->product, sizeof (pDevice->product), kCFStringEncodingUTF8))) {
SDL_strlcpy(pDevice->product, "Unidentified joystick", sizeof (pDevice->product));
}
refCF = IOHIDDeviceGetProperty(hidDevice, CFSTR(kIOHIDVendorIDKey));
if (refCF) {
CFNumberGetValue(refCF, kCFNumberSInt32Type, &vendor);
}
refCF = IOHIDDeviceGetProperty(hidDevice, CFSTR(kIOHIDProductIDKey));
if (refCF) {
CFNumberGetValue(refCF, kCFNumberSInt32Type, &product);
}
refCF = IOHIDDeviceGetProperty(hidDevice, CFSTR(kIOHIDVersionNumberKey));
if (refCF) {
CFNumberGetValue(refCF, kCFNumberSInt32Type, &version);
}
#ifdef SDL_JOYSTICK_HIDAPI
if (HIDAPI_IsDevicePresent(vendor, product, version)) {
/* The HIDAPI driver is taking care of this device */
return 0;
}
#endif
SDL_memset(pDevice->guid.data, 0, sizeof(pDevice->guid.data));
if (vendor && product) {
*guid16++ = SDL_SwapLE16(SDL_HARDWARE_BUS_USB);
*guid16++ = 0;
*guid16++ = SDL_SwapLE16((Uint16)vendor);
*guid16++ = 0;
*guid16++ = SDL_SwapLE16((Uint16)product);
*guid16++ = 0;
*guid16++ = SDL_SwapLE16((Uint16)version);
*guid16++ = 0;
} else {
*guid16++ = SDL_SwapLE16(SDL_HARDWARE_BUS_BLUETOOTH);
*guid16++ = 0;
SDL_strlcpy((char*)guid16, pDevice->product, sizeof(pDevice->guid.data) - 4);
}
array = IOHIDDeviceCopyMatchingElements(hidDevice, NULL, kIOHIDOptionsTypeNone);
if (array) {
AddHIDElements(array, pDevice);
CFRelease(array);
}
return SDL_TRUE;
}
static SDL_bool
JoystickAlreadyKnown(IOHIDDeviceRef ioHIDDeviceObject)
{
recDevice *i;
for (i = gpDeviceList; i != NULL; i = i->pNext) {
if (i->deviceRef == ioHIDDeviceObject) {
return SDL_TRUE;
}
}
return SDL_FALSE;
}
static void
JoystickDeviceWasAddedCallback(void *ctx, IOReturn res, void *sender, IOHIDDeviceRef ioHIDDeviceObject)
{
recDevice *device;
int device_index = 0;
io_service_t ioservice;
if (res != kIOReturnSuccess) {
return;
}
if (JoystickAlreadyKnown(ioHIDDeviceObject)) {
return; /* IOKit sent us a duplicate. */
}
device = (recDevice *) SDL_calloc(1, sizeof(recDevice));
if (!device) {
SDL_OutOfMemory();
return;
}
if (!GetDeviceInfo(ioHIDDeviceObject, device)) {
SDL_free(device);
return; /* not a device we care about, probably. */
}
if (SDL_ShouldIgnoreJoystick(device->product, device->guid)) {
SDL_free(device);
return;
}
/* Get notified when this device is disconnected. */
IOHIDDeviceRegisterRemovalCallback(ioHIDDeviceObject, JoystickDeviceWasRemovedCallback, device);
IOHIDDeviceScheduleWithRunLoop(ioHIDDeviceObject, CFRunLoopGetCurrent(), SDL_JOYSTICK_RUNLOOP_MODE);
/* Allocate an instance ID for this device */
device->instance_id = SDL_GetNextJoystickInstanceID();
/* We have to do some storage of the io_service_t for SDL_HapticOpenFromJoystick */
ioservice = IOHIDDeviceGetService(ioHIDDeviceObject);
if ((ioservice) && (FFIsForceFeedback(ioservice) == FF_OK)) {
device->ffservice = ioservice;
#if SDL_HAPTIC_IOKIT
MacHaptic_MaybeAddDevice(ioservice);
#endif
}
/* Add device to the end of the list */
if ( !gpDeviceList ) {
gpDeviceList = device;
} else {
recDevice *curdevice;
curdevice = gpDeviceList;
while ( curdevice->pNext ) {
++device_index;
curdevice = curdevice->pNext;
}
curdevice->pNext = device;
++device_index; /* bump by one since we counted by pNext. */
}
SDL_PrivateJoystickAdded(device->instance_id);
}
static SDL_bool
ConfigHIDManager(CFArrayRef matchingArray)
{
CFRunLoopRef runloop = CFRunLoopGetCurrent();
if (IOHIDManagerOpen(hidman, kIOHIDOptionsTypeNone) != kIOReturnSuccess) {
return SDL_FALSE;
}
IOHIDManagerSetDeviceMatchingMultiple(hidman, matchingArray);
IOHIDManagerRegisterDeviceMatchingCallback(hidman, JoystickDeviceWasAddedCallback, NULL);
IOHIDManagerScheduleWithRunLoop(hidman, runloop, SDL_JOYSTICK_RUNLOOP_MODE);
while (CFRunLoopRunInMode(SDL_JOYSTICK_RUNLOOP_MODE,0,TRUE) == kCFRunLoopRunHandledSource) {
/* no-op. Callback fires once per existing device. */
}
/* future hotplug events will come through SDL_JOYSTICK_RUNLOOP_MODE now. */
return SDL_TRUE; /* good to go. */
}
static CFDictionaryRef
CreateHIDDeviceMatchDictionary(const UInt32 page, const UInt32 usage, int *okay)
{
CFDictionaryRef retval = NULL;
CFNumberRef pageNumRef = CFNumberCreate(kCFAllocatorDefault, kCFNumberIntType, &page);
CFNumberRef usageNumRef = CFNumberCreate(kCFAllocatorDefault, kCFNumberIntType, &usage);
const void *keys[2] = { (void *) CFSTR(kIOHIDDeviceUsagePageKey), (void *) CFSTR(kIOHIDDeviceUsageKey) };
const void *vals[2] = { (void *) pageNumRef, (void *) usageNumRef };
if (pageNumRef && usageNumRef) {
retval = CFDictionaryCreate(kCFAllocatorDefault, keys, vals, 2, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
}
if (pageNumRef) {
CFRelease(pageNumRef);
}
if (usageNumRef) {
CFRelease(usageNumRef);
}
if (!retval) {
*okay = 0;
}
return retval;
}
static SDL_bool
CreateHIDManager(void)
{
SDL_bool retval = SDL_FALSE;
int okay = 1;
const void *vals[] = {
(void *) CreateHIDDeviceMatchDictionary(kHIDPage_GenericDesktop, kHIDUsage_GD_Joystick, &okay),
(void *) CreateHIDDeviceMatchDictionary(kHIDPage_GenericDesktop, kHIDUsage_GD_GamePad, &okay),
(void *) CreateHIDDeviceMatchDictionary(kHIDPage_GenericDesktop, kHIDUsage_GD_MultiAxisController, &okay),
};
const size_t numElements = SDL_arraysize(vals);
CFArrayRef array = okay ? CFArrayCreate(kCFAllocatorDefault, vals, numElements, &kCFTypeArrayCallBacks) : NULL;
size_t i;
for (i = 0; i < numElements; i++) {
if (vals[i]) {
CFRelease((CFTypeRef) vals[i]);
}
}
if (array) {
hidman = IOHIDManagerCreate(kCFAllocatorDefault, kIOHIDOptionsTypeNone);
if (hidman != NULL) {
retval = ConfigHIDManager(array);
}
CFRelease(array);
}
return retval;
}
static int
DARWIN_JoystickInit(void)
{
if (gpDeviceList) {
return SDL_SetError("Joystick: Device list already inited.");
}
if (!CreateHIDManager()) {
return SDL_SetError("Joystick: Couldn't initialize HID Manager");
}
return 0;
}
static int
DARWIN_JoystickGetCount(void)
{
recDevice *device = gpDeviceList;
int nJoySticks = 0;
while (device) {
if (!device->removed) {
nJoySticks++;
}
device = device->pNext;
}
return nJoySticks;
}
static void
DARWIN_JoystickDetect(void)
{
recDevice *device = gpDeviceList;
while (device) {
if (device->removed) {
device = FreeDevice(device);
} else {
device = device->pNext;
}
}
/* run this after the checks above so we don't set device->removed and delete the device before
DARWIN_JoystickUpdate can run to clean up the SDL_Joystick object that owns this device */
while (CFRunLoopRunInMode(SDL_JOYSTICK_RUNLOOP_MODE,0,TRUE) == kCFRunLoopRunHandledSource) {
/* no-op. Pending callbacks will fire in CFRunLoopRunInMode(). */
}
}
/* Function to get the device-dependent name of a joystick */
const char *
DARWIN_JoystickGetDeviceName(int device_index)
{
recDevice *device = GetDeviceForIndex(device_index);
return device ? device->product : "UNKNOWN";
}
static int
DARWIN_JoystickGetDevicePlayerIndex(int device_index)
{
return -1;
}
static SDL_JoystickGUID
DARWIN_JoystickGetDeviceGUID( int device_index )
{
recDevice *device = GetDeviceForIndex(device_index);
SDL_JoystickGUID guid;
if (device) {
guid = device->guid;
} else {
SDL_zero(guid);
}
return guid;
}
static SDL_JoystickID
DARWIN_JoystickGetDeviceInstanceID(int device_index)
{
recDevice *device = GetDeviceForIndex(device_index);
return device ? device->instance_id : 0;
}
static int
DARWIN_JoystickOpen(SDL_Joystick * joystick, int device_index)
{
recDevice *device = GetDeviceForIndex(device_index);
joystick->instance_id = device->instance_id;
joystick->hwdata = device;
joystick->name = device->product;
joystick->naxes = device->axes;
joystick->nhats = device->hats;
joystick->nballs = 0;
joystick->nbuttons = device->buttons;
return 0;
}
/*
* Like strerror but for force feedback errors.
*/
static const char *
FFStrError(unsigned int err)
{
switch (err) {
case FFERR_DEVICEFULL:
return "device full";
/* This should be valid, but for some reason isn't defined... */
/* case FFERR_DEVICENOTREG:
return "device not registered"; */
case FFERR_DEVICEPAUSED:
return "device paused";
case FFERR_DEVICERELEASED:
return "device released";
case FFERR_EFFECTPLAYING:
return "effect playing";
case FFERR_EFFECTTYPEMISMATCH:
return "effect type mismatch";
case FFERR_EFFECTTYPENOTSUPPORTED:
return "effect type not supported";
case FFERR_GENERIC:
return "undetermined error";
case FFERR_HASEFFECTS:
return "device has effects";
case FFERR_INCOMPLETEEFFECT:
return "incomplete effect";
case FFERR_INTERNAL:
return "internal fault";
case FFERR_INVALIDDOWNLOADID:
return "invalid download id";
case FFERR_INVALIDPARAM:
return "invalid parameter";
case FFERR_MOREDATA:
return "more data";
case FFERR_NOINTERFACE:
return "interface not supported";
case FFERR_NOTDOWNLOADED:
return "effect is not downloaded";
case FFERR_NOTINITIALIZED:
return "object has not been initialized";
case FFERR_OUTOFMEMORY:
return "out of memory";
case FFERR_UNPLUGGED:
return "device is unplugged";
case FFERR_UNSUPPORTED:
return "function call unsupported";
case FFERR_UNSUPPORTEDAXIS:
return "axis unsupported";
default:
return "unknown error";
}
}
static int
DARWIN_JoystickInitRumble(recDevice *device, Sint16 magnitude, Uint32 duration_ms)
{
HRESULT result;
if (!device->ffdevice) {
result = FFCreateDevice(device->ffservice, &device->ffdevice);
if (result != FF_OK) {
return SDL_SetError("Unable to create force feedback device from service: %s", FFStrError(result));
}
}
/* Reset and then enable actuators */
result = FFDeviceSendForceFeedbackCommand(device->ffdevice, FFSFFC_RESET);
if (result != FF_OK) {
return SDL_SetError("Unable to reset force feedback device: %s", FFStrError(result));
}
result = FFDeviceSendForceFeedbackCommand(device->ffdevice, FFSFFC_SETACTUATORSON);
if (result != FF_OK) {
return SDL_SetError("Unable to enable force feedback actuators: %s", FFStrError(result));
}
/* Create the effect */
device->ffeffect = CreateRumbleEffectData(magnitude, duration_ms);
if (!device->ffeffect) {
return SDL_OutOfMemory();
}
result = FFDeviceCreateEffect(device->ffdevice, kFFEffectType_Sine_ID,
device->ffeffect, &device->ffeffect_ref);
if (result != FF_OK) {
return SDL_SetError("Haptic: Unable to create effect: %s", FFStrError(result));
}
return 0;
}
static int
DARWIN_JoystickRumble(SDL_Joystick * joystick, Uint16 low_frequency_rumble, Uint16 high_frequency_rumble, Uint32 duration_ms)
{
HRESULT result;
recDevice *device = joystick->hwdata;
/* Scale and average the two rumble strengths */
Sint16 magnitude = (Sint16)(((low_frequency_rumble / 2) + (high_frequency_rumble / 2)) / 2);
if (!device->ffservice) {
return SDL_Unsupported();
}
if (device->ff_initialized) {
FFPERIODIC *periodic = ((FFPERIODIC *)device->ffeffect->lpvTypeSpecificParams);
device->ffeffect->dwDuration = duration_ms * 1000; /* In microseconds. */
periodic->dwMagnitude = CONVERT_MAGNITUDE(magnitude);
result = FFEffectSetParameters(device->ffeffect_ref, device->ffeffect,
(FFEP_DURATION | FFEP_TYPESPECIFICPARAMS));
if (result != FF_OK) {
return SDL_SetError("Unable to update rumble effect: %s", FFStrError(result));
}
} else {
if (DARWIN_JoystickInitRumble(device, magnitude, duration_ms) < 0) {
return -1;
}
device->ff_initialized = SDL_TRUE;
}
result = FFEffectStart(device->ffeffect_ref, 1, 0);
if (result != FF_OK) {
return SDL_SetError("Unable to run the rumble effect: %s", FFStrError(result));
}
return 0;
}
static void
DARWIN_JoystickUpdate(SDL_Joystick * joystick)
{
recDevice *device = joystick->hwdata;
recElement *element;
SInt32 value, range;
int i;
if (!device) {
return;
}
if (device->removed) { /* device was unplugged; ignore it. */
if (joystick->hwdata) {
joystick->force_recentering = SDL_TRUE;
joystick->hwdata = NULL;
}
return;
}
element = device->firstAxis;
i = 0;
int goodRead = SDL_FALSE;
while (element) {
goodRead = GetHIDScaledCalibratedState(device, element, -32768, 32767, &value);
if (goodRead) {
SDL_PrivateJoystickAxis(joystick, i, value);
}
element = element->pNext;
++i;
}
element = device->firstButton;
i = 0;
while (element) {
goodRead = GetHIDElementState(device, element, &value);
if (goodRead) {
if (value > 1) { /* handle pressure-sensitive buttons */
value = 1;
}
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);
goodRead = GetHIDElementState(device, element, &value);
if (goodRead) {
value -= 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;
}
SDL_PrivateJoystickHat(joystick, i, pos);
}
element = element->pNext;
++i;
}
}
static void
DARWIN_JoystickClose(SDL_Joystick * joystick)
{
}
static void
DARWIN_JoystickQuit(void)
{
while (FreeDevice(gpDeviceList)) {
/* spin */
}
if (hidman) {
IOHIDManagerUnscheduleFromRunLoop(hidman, CFRunLoopGetCurrent(), SDL_JOYSTICK_RUNLOOP_MODE);
IOHIDManagerClose(hidman, kIOHIDOptionsTypeNone);
CFRelease(hidman);
hidman = NULL;
}
}
SDL_JoystickDriver SDL_DARWIN_JoystickDriver =
{
DARWIN_JoystickInit,
DARWIN_JoystickGetCount,
DARWIN_JoystickDetect,
DARWIN_JoystickGetDeviceName,
DARWIN_JoystickGetDevicePlayerIndex,
DARWIN_JoystickGetDeviceGUID,
DARWIN_JoystickGetDeviceInstanceID,
DARWIN_JoystickOpen,
DARWIN_JoystickRumble,
DARWIN_JoystickUpdate,
DARWIN_JoystickClose,
DARWIN_JoystickQuit,
};
#endif /* SDL_JOYSTICK_IOKIT */
/* vi: set ts=4 sw=4 expandtab: */
SDL_zero
#define SDL_zero(x)
Definition: SDL_stdinc.h:416
SDL_ShouldIgnoreJoystick
SDL_bool SDL_ShouldIgnoreJoystick(const char *name, SDL_JoystickGUID guid)
Definition: SDL_joystick.c:1359
SDL_memset
#define SDL_memset
Definition: SDL_dynapi_overrides.h:386
Uint32
uint32_t Uint32
Definition: SDL_stdinc.h:203
Sint32
int32_t Sint32
Definition: SDL_stdinc.h:197
SDL_events.h
SDL_strlcpy
#define SDL_strlcpy
Definition: SDL_dynapi_overrides.h:394
recElement
Definition: SDL_sysjoystick_c.h:30
SDL_HAT_CENTERED
#define SDL_HAT_CENTERED
Definition: SDL_joystick.h:329
NULL
#define NULL
Definition: begin_code.h:167
SDL_HAT_DOWN
#define SDL_HAT_DOWN
Definition: SDL_joystick.h:332
SDL_joystick.h
TRUE
#define TRUE
Definition: edid-parse.c:33
recElement::min
SInt32 min
Definition: SDL_sysjoystick_c.h:35
GetDeviceForIndex
static SDL_JoystickDeviceItem * GetDeviceForIndex(int device_index)
Definition: SDL_sysjoystick.m:87
SDL_PrivateJoystickAdded
void SDL_PrivateJoystickAdded(SDL_JoystickID device_instance)
Definition: SDL_joystick.c:755
recElement::cookie
IOHIDElementCookie cookie
Definition: SDL_sysjoystick_c.h:33
SDL_GetNextJoystickInstanceID
SDL_JoystickID SDL_GetNextJoystickInstanceID()
Definition: SDL_joystick.c:163
recElement::max
SInt32 max
Definition: SDL_sysjoystick_c.h:36
recElement::elementRef
IOHIDElementRef elementRef
Definition: SDL_sysjoystick_c.h:32
SDL_SwapLE16
#define SDL_SwapLE16(X)
Definition: SDL_endian.h:241
ctx
EGLContext ctx
Definition: eglext.h:208
result
GLuint64EXT * result
Definition: SDL_opengl_glext.h:9432
SDL_HAT_LEFTDOWN
#define SDL_HAT_LEFTDOWN
Definition: SDL_joystick.h:337
SDL_PrivateJoystickRemoved
void SDL_PrivateJoystickRemoved(SDL_JoystickID device_instance)
Definition: SDL_joystick.c:805
SDL_PrivateJoystickAxis
int SDL_PrivateJoystickAxis(SDL_Joystick *joystick, Uint8 axis, Sint16 value)
Definition: SDL_joystick.c:833
SDL_JoystickID
Sint32 SDL_JoystickID
Definition: SDL_joystick.h:81
Sint16
int16_t Sint16
Definition: SDL_stdinc.h:185
SDL_FALSE
@ SDL_FALSE
Definition: SDL_stdinc.h:163
usage
GLsizeiptr const void GLenum usage
Definition: SDL_opengl_glext.h:537
recElement::usage
uint32_t usage
Definition: SDL_sysjoystick_c.h:34
recElement::maxReport
SInt32 maxReport
Definition: SDL_sysjoystick_c.h:40
array
GLenum array
Definition: SDL_opengl_glext.h:6300
retval
SDL_bool retval
Definition: testgamecontroller.c:65
SDL_free
#define SDL_free
Definition: SDL_dynapi_overrides.h:377
SDL_DARWIN_JoystickDriver
SDL_JoystickDriver SDL_DARWIN_JoystickDriver
recElement::minReport
SInt32 minReport
Definition: SDL_sysjoystick_c.h:39
SDL_PrivateJoystickButton
int SDL_PrivateJoystickButton(SDL_Joystick *joystick, Uint8 button, Uint8 state)
Definition: SDL_joystick.c:966
MacHaptic_MaybeRemoveDevice
int MacHaptic_MaybeRemoveDevice(io_object_t device)
recElement::usagePage
uint32_t usagePage
Definition: SDL_sysjoystick_c.h:34
Uint16
uint16_t Uint16
Definition: SDL_stdinc.h:191
SDL_HAT_LEFT
#define SDL_HAT_LEFT
Definition: SDL_joystick.h:333
SDL_HAT_LEFTUP
#define SDL_HAT_LEFTUP
Definition: SDL_joystick.h:336
SDL_HARDWARE_BUS_USB
#define SDL_HARDWARE_BUS_USB
Definition: SDL_sysjoystick.h:86
SDL_OutOfMemory
#define SDL_OutOfMemory()
Definition: SDL_error.h:52
SDL_PrivateJoystickHat
int SDL_PrivateJoystickHat(SDL_Joystick *joystick, Uint8 hat, Uint8 value)
Definition: SDL_joystick.c:890
SDL_arraysize
#define SDL_arraysize(array)
Definition: SDL_stdinc.h:115
SDL_calloc
#define SDL_calloc
Definition: SDL_dynapi_overrides.h:375
recElement::pNext
struct recElement * pNext
Definition: SDL_sysjoystick_c.h:42
uint32_t
unsigned int uint32_t
Definition: SDL_config_windows.h:63
SDL_TRUE
@ SDL_TRUE
Definition: SDL_stdinc.h:164
SDL_HAT_RIGHT
#define SDL_HAT_RIGHT
Definition: SDL_joystick.h:331
value
GLsizei const GLfloat * value
Definition: SDL_opengl_glext.h:698
SDL_SetError
#define SDL_SetError
Definition: SDL_dynapi_overrides.h:30
range
GLenum GLint * range
Definition: SDL_opengl_glext.h:1869
SDL_HAT_UP
#define SDL_HAT_UP
Definition: SDL_joystick.h:330
SDL_HARDWARE_BUS_BLUETOOTH
#define SDL_HARDWARE_BUS_BLUETOOTH
Definition: SDL_sysjoystick.h:87
HIDAPI_IsDevicePresent
SDL_bool HIDAPI_IsDevicePresent(Uint16 vendor_id, Uint16 product_id, Uint16 version)
SDL_Unsupported
#define SDL_Unsupported()
Definition: SDL_error.h:53
res
GLuint res
Definition: SDL_opengl_glext.h:7937
device
static SDL_AudioDeviceID device
Definition: loopwave.c:37
SDL_JoystickGUID
Definition: SDL_joystick.h:70
SDL_HAT_RIGHTDOWN
#define SDL_HAT_RIGHTDOWN
Definition: SDL_joystick.h:335
i
return Display return Display Bool Bool int int int return Display XEvent Bool(*) XPointer return Display return Display Drawable _Xconst char unsigned int unsigned int return Display Pixmap Pixmap XColor XColor unsigned int unsigned int return Display _Xconst char char int char return Display Visual unsigned int int int char unsigned int unsigned int in i)
Definition: SDL_x11sym.h:50
SDL_HAT_RIGHTUP
#define SDL_HAT_RIGHTUP
Definition: SDL_joystick.h:334
SDL_bool
SDL_bool
Definition: SDL_stdinc.h:161
MacHaptic_MaybeAddDevice
int MacHaptic_MaybeAddDevice(io_object_t device)
Uint8
uint8_t Uint8
Definition: SDL_stdinc.h:179