Add support for joystick hot swapping on OS X.
This commit is contained in:
Aaron Jacobs
Camilla Berglund
parent
19a28e2c9f
commit
1a96c294ee
@ -33,17 +33,17 @@
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#include <IOKit/hid/IOHIDKeys.h>
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#define _GLFW_PLATFORM_LIBRARY_JOYSTICK_STATE \
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_GLFWjoystickIOKit iokit_js[GLFW_JOYSTICK_LAST + 1]
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_GLFWjoystickIOKit iokit_js
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// IOKit-specific per-joystick data
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//
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typedef struct _GLFWjoystickIOKit
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typedef struct _GLFWjoydevice
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{
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int present;
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char name[256];
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IOHIDDeviceInterface** interface;
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IOHIDDeviceRef deviceRef;
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CFMutableArrayRef axisElements;
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CFMutableArrayRef buttonElements;
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@ -51,7 +51,16 @@ typedef struct _GLFWjoystickIOKit
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float* axes;
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unsigned char* buttons;
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} _GLFWjoydevice;
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// IOKit-specific joystick API data
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//
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typedef struct _GLFWjoystickIOKit
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{
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_GLFWjoydevice devices[GLFW_JOYSTICK_LAST + 1];
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IOHIDManagerRef managerRef;
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} _GLFWjoystickIOKit;
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@ -42,7 +42,7 @@
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//------------------------------------------------------------------------
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typedef struct
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{
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IOHIDElementCookie cookie;
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IOHIDElementRef elementRef;
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long min;
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long max;
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@ -55,20 +55,17 @@ typedef struct
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static void getElementsCFArrayHandler(const void* value, void* parameter);
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// Adds an element to the specified joystick
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//
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static void addJoystickElement(_GLFWjoystickIOKit* joystick, CFTypeRef elementRef)
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static void addJoystickElement(_GLFWjoydevice* joystick, IOHIDElementRef elementRef)
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{
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long elementType, usagePage, usage;
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IOHIDElementType elementType;
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long usagePage, usage;
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CFMutableArrayRef elementsArray = NULL;
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CFNumberGetValue(CFDictionaryGetValue(elementRef, CFSTR(kIOHIDElementTypeKey)),
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kCFNumberLongType, &elementType);
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CFNumberGetValue(CFDictionaryGetValue(elementRef, CFSTR(kIOHIDElementUsagePageKey)),
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kCFNumberLongType, &usagePage);
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CFNumberGetValue(CFDictionaryGetValue(elementRef, CFSTR(kIOHIDElementUsageKey)),
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kCFNumberLongType, &usage);
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elementType = IOHIDElementGetType(elementRef);
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usagePage = IOHIDElementGetUsagePage(elementRef);
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usage = IOHIDElementGetUsage(elementRef);
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if ((elementType == kIOHIDElementTypeInput_Axis) ||
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(elementType == kIOHIDElementTypeInput_Button) ||
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@ -108,28 +105,19 @@ static void addJoystickElement(_GLFWjoystickIOKit* joystick, CFTypeRef elementRe
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if (elementsArray)
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{
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long number;
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CFTypeRef numberRef;
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_GLFWjoyelement* element = calloc(1, sizeof(_GLFWjoyelement));
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CFArrayAppendValue(elementsArray, element);
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numberRef = CFDictionaryGetValue(elementRef, CFSTR(kIOHIDElementCookieKey));
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if (numberRef && CFNumberGetValue(numberRef, kCFNumberLongType, &number))
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element->cookie = (IOHIDElementCookie) number;
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element->elementRef = elementRef;
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numberRef = CFDictionaryGetValue(elementRef, CFSTR(kIOHIDElementMinKey));
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if (numberRef && CFNumberGetValue(numberRef, kCFNumberLongType, &number))
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element->minReport = element->min = number;
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numberRef = CFDictionaryGetValue(elementRef, CFSTR(kIOHIDElementMaxKey));
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if (numberRef && CFNumberGetValue(numberRef, kCFNumberLongType, &number))
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element->maxReport = element->max = number;
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element->minReport = IOHIDElementGetLogicalMin(elementRef);
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element->maxReport = IOHIDElementGetLogicalMax(elementRef);
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}
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}
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else
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{
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CFTypeRef array = CFDictionaryGetValue(elementRef, CFSTR(kIOHIDElementKey));
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CFArrayRef array = IOHIDElementGetChildren(elementRef);
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if (array)
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{
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if (CFGetTypeID(array) == CFArrayGetTypeID())
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@ -145,40 +133,43 @@ static void addJoystickElement(_GLFWjoystickIOKit* joystick, CFTypeRef elementRe
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//
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static void getElementsCFArrayHandler(const void* value, void* parameter)
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{
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if (CFGetTypeID(value) == CFDictionaryGetTypeID())
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addJoystickElement((_GLFWjoystickIOKit*) parameter, (CFTypeRef) value);
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if (CFGetTypeID(value) == IOHIDElementGetTypeID())
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addJoystickElement((_GLFWjoydevice*) parameter, (IOHIDElementRef) value);
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}
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// Returns the value of the specified element of the specified joystick
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//
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static long getElementValue(_GLFWjoystickIOKit* joystick, _GLFWjoyelement* element)
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static long getElementValue(_GLFWjoydevice* joystick, _GLFWjoyelement* element)
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{
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IOReturn result = kIOReturnSuccess;
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IOHIDEventStruct hidEvent;
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hidEvent.value = 0;
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IOHIDValueRef valueRef;
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long value = 0;
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if (joystick && element && joystick->interface)
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if (joystick && element && joystick->deviceRef)
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{
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result = (*(joystick->interface))->getElementValue(joystick->interface,
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element->cookie,
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&hidEvent);
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result = IOHIDDeviceGetValue(joystick->deviceRef,
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element->elementRef,
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&valueRef);
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if (kIOReturnSuccess == result)
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{
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value = IOHIDValueGetIntegerValue(valueRef);
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// Record min and max for auto calibration
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if (hidEvent.value < element->minReport)
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element->minReport = hidEvent.value;
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if (hidEvent.value > element->maxReport)
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element->maxReport = hidEvent.value;
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if (value < element->minReport)
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element->minReport = value;
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if (value > element->maxReport)
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element->maxReport = value;
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}
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}
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// Auto user scale
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return (long) hidEvent.value;
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return value;
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}
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// Removes the specified joystick
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//
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static void removeJoystick(_GLFWjoystickIOKit* joystick)
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static void removeJoystick(_GLFWjoydevice* joystick)
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{
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int i;
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@ -188,29 +179,22 @@ static void removeJoystick(_GLFWjoystickIOKit* joystick)
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for (i = 0; i < CFArrayGetCount(joystick->axisElements); i++)
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free((void*) CFArrayGetValueAtIndex(joystick->axisElements, i));
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CFArrayRemoveAllValues(joystick->axisElements);
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CFRelease(joystick->axisElements);
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for (i = 0; i < CFArrayGetCount(joystick->buttonElements); i++)
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free((void*) CFArrayGetValueAtIndex(joystick->buttonElements, i));
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CFArrayRemoveAllValues(joystick->buttonElements);
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CFRelease(joystick->buttonElements);
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for (i = 0; i < CFArrayGetCount(joystick->hatElements); i++)
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free((void*) CFArrayGetValueAtIndex(joystick->hatElements, i));
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CFArrayRemoveAllValues(joystick->hatElements);
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CFRelease(joystick->hatElements);
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free(joystick->axes);
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free(joystick->buttons);
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(*(joystick->interface))->close(joystick->interface);
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(*(joystick->interface))->Release(joystick->interface);
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memset(joystick, 0, sizeof(_GLFWjoystickIOKit));
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}
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// Callback for user-initiated joystick removal
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//
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static void removalCallback(void* target, IOReturn result, void* refcon, void* sender)
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{
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removeJoystick((_GLFWjoystickIOKit*) refcon);
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memset(joystick, 0, sizeof(_GLFWjoydevice));
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}
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// Polls for joystick events and updates GLFW state
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@ -223,7 +207,7 @@ static void pollJoystickEvents(void)
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{
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CFIndex i;
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int buttonIndex = 0;
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_GLFWjoystickIOKit* joystick = _glfw.iokit_js + joy;
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_GLFWjoydevice* joystick = _glfw.iokit_js.devices + joy;
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if (!joystick->present)
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continue;
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@ -276,6 +260,107 @@ static void pollJoystickEvents(void)
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}
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}
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// Callback for user-initiated joystick addition
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//
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static void matchCallback(void* context, IOReturn result, void* sender, IOHIDDeviceRef deviceRef)
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{
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_GLFWjoydevice* joystick;
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int joy;
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for (joy = GLFW_JOYSTICK_1; joy <= GLFW_JOYSTICK_LAST; joy++)
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{
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joystick = _glfw.iokit_js.devices + joy;
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if (!joystick->present)
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continue;
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if (joystick->deviceRef == deviceRef)
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return;
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}
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for (joy = GLFW_JOYSTICK_1; joy <= GLFW_JOYSTICK_LAST; joy++)
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{
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joystick = _glfw.iokit_js.devices + joy;
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if (!joystick->present)
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break;
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}
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if (joy > GLFW_JOYSTICK_LAST)
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return;
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joystick->present = GL_TRUE;
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joystick->deviceRef = deviceRef;
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CFStringRef name = IOHIDDeviceGetProperty(deviceRef, CFSTR(kIOHIDProductKey));
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CFStringGetCString(name,
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joystick->name,
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sizeof(joystick->name),
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kCFStringEncodingUTF8);
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joystick->axisElements = CFArrayCreateMutable(NULL, 0, NULL);
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joystick->buttonElements = CFArrayCreateMutable(NULL, 0, NULL);
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joystick->hatElements = CFArrayCreateMutable(NULL, 0, NULL);
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CFArrayRef arrayRef = IOHIDDeviceCopyMatchingElements(deviceRef, NULL, kIOHIDOptionsTypeNone);
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CFRange range = { 0, CFArrayGetCount(arrayRef) };
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CFArrayApplyFunction(arrayRef,
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range,
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getElementsCFArrayHandler,
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(void*) joystick);
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CFRelease(arrayRef);
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joystick->axes = calloc(CFArrayGetCount(joystick->axisElements),
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sizeof(float));
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joystick->buttons = calloc(CFArrayGetCount(joystick->buttonElements) +
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CFArrayGetCount(joystick->hatElements) * 4, 1);
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}
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// Callback for user-initiated joystick removal
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//
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static void removeCallback(void* context, IOReturn result, void* sender, IOHIDDeviceRef deviceRef)
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{
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int joy;
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for (joy = GLFW_JOYSTICK_1; joy <= GLFW_JOYSTICK_LAST; joy++) {
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_GLFWjoydevice* joystick = _glfw.iokit_js.devices + joy;
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if (joystick->deviceRef == deviceRef) {
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removeJoystick(joystick);
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break;
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}
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}
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}
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// Creates a dictionary to match against devices with the specified usage page and usage
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//
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static CFMutableDictionaryRef createMatchingDictionary(long usagePage, long usage)
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{
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CFMutableDictionaryRef result = CFDictionaryCreateMutable(kCFAllocatorDefault,
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0,
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&kCFTypeDictionaryKeyCallBacks,
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&kCFTypeDictionaryValueCallBacks);
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if (result)
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{
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CFNumberRef pageRef = CFNumberCreate(kCFAllocatorDefault, kCFNumberIntType, &usagePage);
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if (pageRef)
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{
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CFDictionarySetValue(result, CFSTR(kIOHIDDeviceUsagePageKey), pageRef);
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CFRelease(pageRef);
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CFNumberRef usageRef = CFNumberCreate(kCFAllocatorDefault, kCFNumberIntType, &usage);
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if (usageRef)
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{
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CFDictionarySetValue(result, CFSTR(kIOHIDDeviceUsageKey), usageRef);
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CFRelease(usageRef);
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}
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}
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}
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return result;
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}
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//////////////////////////////////////////////////////////////////////////
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////// GLFW internal API //////
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@ -285,177 +370,64 @@ static void pollJoystickEvents(void)
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//
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void _glfwInitJoysticks(void)
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{
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int joy = 0;
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IOReturn result = kIOReturnSuccess;
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mach_port_t masterPort = 0;
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io_iterator_t objectIterator = 0;
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CFMutableDictionaryRef hidMatchDictionary = NULL;
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io_object_t ioHIDDeviceObject = 0;
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CFMutableArrayRef matchingCFArrayRef;
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result = IOMasterPort(bootstrap_port, &masterPort);
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hidMatchDictionary = IOServiceMatching(kIOHIDDeviceKey);
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if (kIOReturnSuccess != result || !hidMatchDictionary)
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_glfw.iokit_js.managerRef = IOHIDManagerCreate(kCFAllocatorDefault,
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kIOHIDOptionsTypeNone);
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matchingCFArrayRef = CFArrayCreateMutable(kCFAllocatorDefault, 0, &kCFTypeArrayCallBacks);
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if (matchingCFArrayRef)
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{
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if (hidMatchDictionary)
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CFRelease(hidMatchDictionary);
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CFDictionaryRef matchingCFDictRef = createMatchingDictionary(kHIDPage_GenericDesktop, kHIDUsage_GD_Joystick);
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if (matchingCFDictRef)
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{
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CFArrayAppendValue(matchingCFArrayRef, matchingCFDictRef);
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CFRelease(matchingCFDictRef);
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}
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return;
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matchingCFDictRef = createMatchingDictionary(kHIDPage_GenericDesktop, kHIDUsage_GD_GamePad);
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if (matchingCFDictRef)
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{
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CFArrayAppendValue(matchingCFArrayRef, matchingCFDictRef);
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CFRelease(matchingCFDictRef);
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}
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matchingCFDictRef = createMatchingDictionary(kHIDPage_GenericDesktop, kHIDUsage_GD_MultiAxisController);
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if (matchingCFDictRef)
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{
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CFArrayAppendValue(matchingCFArrayRef, matchingCFDictRef);
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CFRelease(matchingCFDictRef);
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}
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}
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result = IOServiceGetMatchingServices(masterPort,
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hidMatchDictionary,
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&objectIterator);
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if (result != kIOReturnSuccess)
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return;
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IOHIDManagerSetDeviceMatchingMultiple(_glfw.iokit_js.managerRef, matchingCFArrayRef);
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CFRelease(matchingCFArrayRef);
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if (!objectIterator)
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{
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// There are no joysticks
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return;
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}
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IOHIDManagerRegisterDeviceMatchingCallback(_glfw.iokit_js.managerRef, &matchCallback, NULL);
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IOHIDManagerRegisterDeviceRemovalCallback(_glfw.iokit_js.managerRef, &removeCallback, NULL);
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while ((ioHIDDeviceObject = IOIteratorNext(objectIterator)))
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{
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CFMutableDictionaryRef propsRef = NULL;
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CFTypeRef valueRef = NULL;
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kern_return_t result;
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IOHIDManagerScheduleWithRunLoop(_glfw.iokit_js.managerRef, CFRunLoopGetMain(), kCFRunLoopDefaultMode);
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IOCFPlugInInterface** ppPlugInInterface = NULL;
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HRESULT plugInResult = S_OK;
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SInt32 score = 0;
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IOHIDManagerOpen(_glfw.iokit_js.managerRef, kIOHIDOptionsTypeNone);
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long usagePage = 0;
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long usage = 0;
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valueRef = IORegistryEntryCreateCFProperty(ioHIDDeviceObject,
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CFSTR(kIOHIDPrimaryUsagePageKey),
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kCFAllocatorDefault, kNilOptions);
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if (valueRef)
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{
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CFNumberGetValue(valueRef, kCFNumberLongType, &usagePage);
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CFRelease(valueRef);
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}
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valueRef = IORegistryEntryCreateCFProperty(ioHIDDeviceObject,
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CFSTR(kIOHIDPrimaryUsageKey),
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kCFAllocatorDefault, kNilOptions);
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if (valueRef)
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{
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CFNumberGetValue(valueRef, kCFNumberLongType, &usage);
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CFRelease(valueRef);
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}
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if (usagePage != kHIDPage_GenericDesktop)
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{
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// This device is not relevant to GLFW
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continue;
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}
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if ((usage != kHIDUsage_GD_Joystick &&
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usage != kHIDUsage_GD_GamePad &&
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usage != kHIDUsage_GD_MultiAxisController))
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{
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// This device is not relevant to GLFW
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continue;
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}
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result = IORegistryEntryCreateCFProperties(ioHIDDeviceObject,
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&propsRef,
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kCFAllocatorDefault,
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kNilOptions);
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if (result != kIOReturnSuccess)
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continue;
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_GLFWjoystickIOKit* joystick = _glfw.iokit_js + joy;
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joystick->present = GL_TRUE;
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result = IOCreatePlugInInterfaceForService(ioHIDDeviceObject,
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kIOHIDDeviceUserClientTypeID,
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kIOCFPlugInInterfaceID,
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&ppPlugInInterface,
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&score);
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if (kIOReturnSuccess != result)
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{
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CFRelease(propsRef);
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return;
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}
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plugInResult = (*ppPlugInInterface)->QueryInterface(
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ppPlugInInterface,
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CFUUIDGetUUIDBytes(kIOHIDDeviceInterfaceID),
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(void *) &(joystick->interface));
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if (plugInResult != S_OK)
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{
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CFRelease(propsRef);
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return;
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}
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(*ppPlugInInterface)->Release(ppPlugInInterface);
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(*(joystick->interface))->open(joystick->interface, 0);
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(*(joystick->interface))->setRemovalCallback(joystick->interface,
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removalCallback,
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joystick,
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joystick);
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// Get product string
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valueRef = CFDictionaryGetValue(propsRef, CFSTR(kIOHIDProductKey));
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if (valueRef)
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{
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CFStringGetCString(valueRef,
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joystick->name,
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sizeof(joystick->name),
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kCFStringEncodingUTF8);
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}
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joystick->axisElements = CFArrayCreateMutable(NULL, 0, NULL);
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joystick->buttonElements = CFArrayCreateMutable(NULL, 0, NULL);
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joystick->hatElements = CFArrayCreateMutable(NULL, 0, NULL);
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valueRef = CFDictionaryGetValue(propsRef, CFSTR(kIOHIDElementKey));
|
||||
if (CFGetTypeID(valueRef) == CFArrayGetTypeID())
|
||||
{
|
||||
CFRange range = { 0, CFArrayGetCount(valueRef) };
|
||||
CFArrayApplyFunction(valueRef,
|
||||
range,
|
||||
getElementsCFArrayHandler,
|
||||
(void*) joystick);
|
||||
}
|
||||
|
||||
CFRelease(propsRef);
|
||||
|
||||
joystick->axes = calloc(CFArrayGetCount(joystick->axisElements),
|
||||
sizeof(float));
|
||||
joystick->buttons = calloc(CFArrayGetCount(joystick->buttonElements) +
|
||||
CFArrayGetCount(joystick->hatElements) * 4, 1);
|
||||
|
||||
joy++;
|
||||
if (joy > GLFW_JOYSTICK_LAST)
|
||||
break;
|
||||
}
|
||||
// Execute the run loop once in order to register any initially-attached joysticks
|
||||
CFRunLoopRunInMode(kCFRunLoopDefaultMode, 0, false);
|
||||
}
|
||||
|
||||
// Close all opened joystick handles
|
||||
//
|
||||
void _glfwTerminateJoysticks(void)
|
||||
{
|
||||
int i;
|
||||
int joy;
|
||||
|
||||
for (i = 0; i < GLFW_JOYSTICK_LAST + 1; i++)
|
||||
for (joy = 0; joy <= GLFW_JOYSTICK_LAST; joy++)
|
||||
{
|
||||
_GLFWjoystickIOKit* joystick = &_glfw.iokit_js[i];
|
||||
_GLFWjoydevice* joystick = _glfw.iokit_js.devices + joy;
|
||||
removeJoystick(joystick);
|
||||
|
||||
if (joystick->axisElements)
|
||||
CFRelease(joystick->axisElements);
|
||||
if (joystick->buttonElements)
|
||||
CFRelease(joystick->buttonElements);
|
||||
if (joystick->hatElements)
|
||||
CFRelease(joystick->hatElements);
|
||||
}
|
||||
|
||||
CFRelease(_glfw.iokit_js.managerRef);
|
||||
_glfw.iokit_js.managerRef = NULL;
|
||||
}
|
||||
|
||||
|
||||
@ -467,12 +439,12 @@ int _glfwPlatformJoystickPresent(int joy)
|
||||
{
|
||||
pollJoystickEvents();
|
||||
|
||||
return _glfw.iokit_js[joy].present;
|
||||
return _glfw.iokit_js.devices[joy].present;
|
||||
}
|
||||
|
||||
const float* _glfwPlatformGetJoystickAxes(int joy, int* count)
|
||||
{
|
||||
_GLFWjoystickIOKit* joystick = _glfw.iokit_js + joy;
|
||||
_GLFWjoydevice* joystick = _glfw.iokit_js.devices + joy;
|
||||
|
||||
pollJoystickEvents();
|
||||
|
||||
@ -485,7 +457,7 @@ const float* _glfwPlatformGetJoystickAxes(int joy, int* count)
|
||||
|
||||
const unsigned char* _glfwPlatformGetJoystickButtons(int joy, int* count)
|
||||
{
|
||||
_GLFWjoystickIOKit* joystick = _glfw.iokit_js + joy;
|
||||
_GLFWjoydevice* joystick = _glfw.iokit_js.devices + joy;
|
||||
|
||||
pollJoystickEvents();
|
||||
|
||||
@ -501,6 +473,6 @@ const char* _glfwPlatformGetJoystickName(int joy)
|
||||
{
|
||||
pollJoystickEvents();
|
||||
|
||||
return _glfw.iokit_js[joy].name;
|
||||
return _glfw.iokit_js.devices[joy].name;
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user