mirror of
https://github.com/glfw/glfw.git
synced 2024-11-25 14:04:36 +00:00
Added initial joystick support on OS X
This commit is contained in:
Sergey Tikhomirov
parent
901a743d97
commit
2357cf6f30
@ -117,8 +117,12 @@ if (UNIX AND APPLE)
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# Set up library and include paths
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find_library(COCOA_FRAMEWORK Cocoa)
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find_library(IOKIT_FRAMEWORK IOKit)
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find_library(CORE_FOUNDATION_FRAMEWORK CoreFoundation)
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list(APPEND GLFW_LIBRARIES ${COCOA_FRAMEWORK})
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list(APPEND GLFW_LIBRARIES ${OPENGL_gl_LIBRARY})
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list(APPEND GLFW_LIBRARIES ${IOKIT_FRAMEWORK})
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list(APPEND GLFW_LIBRARIES ${CORE_FOUNDATION_FRAMEWORK})
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endif(UNIX AND APPLE)
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#--------------------------------------------------------------------
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@ -225,6 +225,8 @@ int _glfwPlatformInit(void)
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_glfwLibrary.NS.desktopMode =
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(NSDictionary*) CGDisplayCurrentMode(CGMainDisplayID());
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_glfwInitJoysticks();
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return GL_TRUE;
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}
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@ -243,6 +245,8 @@ int _glfwPlatformTerminate(void)
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[_glfwLibrary.NS.autoreleasePool release];
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_glfwLibrary.NS.autoreleasePool = nil;
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_glfwTerminateJoysticks();
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return GL_TRUE;
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}
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@ -30,6 +30,388 @@
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#include "internal.h"
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#include <unistd.h>
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#include <ctype.h>
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#include <sysexits.h>
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#include <mach/mach.h>
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#include <mach/mach_error.h>
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#include <CoreFoundation/CoreFoundation.h>
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#include <IOKit/IOKitLib.h>
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#include <IOKit/IOCFPlugIn.h>
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#include <IOKit/hid/IOHIDLib.h>
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#include <IOKit/hid/IOHIDKeys.h>
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#include <Kernel/IOKit/hidsystem/IOHIDUsageTables.h>
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//------------------------------------------------------------------------
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// Joystick element information
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//------------------------------------------------------------------------
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typedef struct {
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IOHIDElementCookie Cookie;
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long Value;
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long Min;
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long Max;
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long MinReport;
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long MaxReport;
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} joystick_element_t;
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//------------------------------------------------------------------------
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// Joystick information & state
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//------------------------------------------------------------------------
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typedef struct {
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int Present;
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char Product[256];
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IOHIDDeviceInterface ** Interface;
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int NumAxes;
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int NumButtons;
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int NumHats;
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CFMutableArrayRef Axes;
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CFMutableArrayRef Buttons;
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CFMutableArrayRef Hats;
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} joystick_t;
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joystick_t _glfwJoysticks[GLFW_JOYSTICK_LAST + 1];
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void GetElementsCFArrayHandler(const void * value, void * parameter);
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static void JoystickAddElemet(joystick_t * joystick, CFTypeRef refElement)
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{
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long elementType, usagePage, usage;
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CFTypeRef refElementType, refUsagePage, refUsage;
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refElementType = CFDictionaryGetValue(refElement, CFSTR(kIOHIDElementTypeKey));
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refUsagePage = CFDictionaryGetValue(refElement, CFSTR(kIOHIDElementUsagePageKey));
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refUsage = CFDictionaryGetValue(refElement, CFSTR(kIOHIDElementUsageKey));
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CFMutableArrayRef elementsArray = NULL;
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CFNumberGetValue(refElementType, kCFNumberLongType, &elementType);
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CFNumberGetValue(refUsagePage, kCFNumberLongType, &usagePage);
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CFNumberGetValue(refUsage, kCFNumberLongType, &usage);
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if ((elementType == kIOHIDElementTypeInput_Axis) ||
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(elementType == kIOHIDElementTypeInput_Button) ||
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(elementType == kIOHIDElementTypeInput_Misc))
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{
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switch (usagePage) /* only interested in kHIDPage_GenericDesktop and kHIDPage_Button */
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{
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case kHIDPage_GenericDesktop:
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switch (usage)
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{
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case kHIDUsage_GD_X:
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case kHIDUsage_GD_Y:
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case kHIDUsage_GD_Z:
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case kHIDUsage_GD_Rx:
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case kHIDUsage_GD_Ry:
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case kHIDUsage_GD_Rz:
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case kHIDUsage_GD_Slider:
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case kHIDUsage_GD_Dial:
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case kHIDUsage_GD_Wheel:
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joystick->NumAxes++;
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elementsArray = joystick->Axes;
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break;
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case kHIDUsage_GD_Hatswitch:
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joystick->NumHats++;
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elementsArray = joystick->Hats;
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break;
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}
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break;
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case kHIDPage_Button:
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joystick->NumButtons++;
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elementsArray = joystick->Buttons;
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break;
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default:
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break;
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}
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if (elementsArray)
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{
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long number;
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CFTypeRef refType;
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joystick_element_t * element = (joystick_element_t *) malloc(sizeof(joystick_element_t));
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CFArrayAppendValue(elementsArray, element);
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refType = CFDictionaryGetValue(refElement, CFSTR(kIOHIDElementCookieKey));
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if (refType && CFNumberGetValue(refType, kCFNumberLongType, &number))
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element->Cookie = (IOHIDElementCookie) number;
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refType = CFDictionaryGetValue(refElement, CFSTR(kIOHIDElementMinKey));
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if (refType && CFNumberGetValue(refType, kCFNumberLongType, &number))
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element->MinReport = element->Min = number;
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refType = CFDictionaryGetValue(refElement, CFSTR(kIOHIDElementMaxKey));
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if (refType && CFNumberGetValue(refType, kCFNumberLongType, &number))
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element->MaxReport = element->Max = number;
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}
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}
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else
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{
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CFTypeRef refElementTop = CFDictionaryGetValue(refElement, CFSTR(kIOHIDElementKey));
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if (refElementTop)
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{
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CFTypeID type = CFGetTypeID (refElementTop);
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if (type == CFArrayGetTypeID()) /* if element is an array */
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{
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CFRange range = {0, CFArrayGetCount (refElementTop)};
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CFArrayApplyFunction(refElementTop, range, GetElementsCFArrayHandler, joystick);
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}
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}
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}
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}
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void GetElementsCFArrayHandler(const void * value, void * parameter)
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{
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if (CFGetTypeID(value) == CFDictionaryGetTypeID())
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JoystickAddElemet((joystick_t *) parameter, (CFTypeRef) value);
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}
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static long GetElementValue(joystick_t * joystick, joystick_element_t * 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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if (NULL != joystick && NULL != element && NULL != joystick->Interface)
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{
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result = (*(joystick->Interface))->getElementValue(joystick->Interface, element->Cookie, &hidEvent);
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if (kIOReturnSuccess == result)
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{
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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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}
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}
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/* auto user scale */
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return (long) hidEvent.value;
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}
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static void RemoveJoystick(joystick_t * joystick)
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{
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if (joystick->Present)
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{
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joystick->Present = GL_FALSE;
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for (int i = 0; i < joystick->NumAxes; i++)
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{
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joystick_element_t * axes =
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(joystick_element_t *) CFArrayGetValueAtIndex(joystick->Axes, i);
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free(axes);
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}
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CFArrayRemoveAllValues(joystick->Axes);
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joystick->NumAxes = 0;
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for (int i = 0; i < joystick->NumButtons; i++)
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{
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joystick_element_t * button =
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(joystick_element_t *) CFArrayGetValueAtIndex(joystick->Buttons, i);
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free(button);
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}
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CFArrayRemoveAllValues(joystick->Buttons);
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joystick->NumButtons = 0;
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for (int i = 0; i < joystick->NumHats; i++)
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{
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joystick_element_t * hat =
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(joystick_element_t *) CFArrayGetValueAtIndex(joystick->Hats, i);
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free(hat);
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}
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CFArrayRemoveAllValues(joystick->Hats);
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joystick->Hats = 0;
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(*(joystick->Interface))->close(joystick->Interface);
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(*(joystick->Interface))->Release(joystick->Interface);
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joystick->Interface = NULL;
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}
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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((joystick_t *) refcon);
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}
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static void PollJoystickEvents(void)
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{
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for (int i = 0; i < GLFW_JOYSTICK_LAST + 1; i++)
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{
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joystick_t * joystick = &_glfwJoysticks[i];
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if (joystick->Present)
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{
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for (CFIndex i = 0; i < joystick->NumButtons; i++)
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{
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joystick_element_t * button =
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(joystick_element_t *) CFArrayGetValueAtIndex(joystick->Buttons, i);
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button->Value = GetElementValue(joystick, button);
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}
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for (CFIndex i = 0; i < joystick->NumAxes; i++)
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{
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joystick_element_t * axes =
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(joystick_element_t *) CFArrayGetValueAtIndex(joystick->Axes, i);
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axes->Value = GetElementValue(joystick, axes);
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}
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}
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}
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}
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//////////////////////////////////////////////////////////////////////////
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////// GLFW internal API //////
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//////////////////////////////////////////////////////////////////////////
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//========================================================================
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// Initialize joystick interface
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//========================================================================
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void _glfwInitJoysticks(void)
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{
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int deviceCounter = 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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result = IOMasterPort(bootstrap_port, &masterPort);
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hidMatchDictionary = IOServiceMatching(kIOHIDDeviceKey);
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if (kIOReturnSuccess != result || !hidMatchDictionary)
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return;
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result = IOServiceGetMatchingServices(masterPort, hidMatchDictionary, &objectIterator);
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if (kIOReturnSuccess != result)
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return;
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if (!objectIterator) /* there are no joysticks */
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return;
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while ((ioHIDDeviceObject = IOIteratorNext(objectIterator)))
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{
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CFMutableDictionaryRef hidProperties = 0;
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kern_return_t result;
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CFTypeRef refCF = 0;
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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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long usagePage, usage;
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result = IORegistryEntryCreateCFProperties(
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ioHIDDeviceObject,
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&hidProperties,
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kCFAllocatorDefault,
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kNilOptions);
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if (result != kIOReturnSuccess) continue;
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/* Check device type */
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refCF = CFDictionaryGetValue(hidProperties, CFSTR(kIOHIDPrimaryUsagePageKey));
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if (refCF)
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CFNumberGetValue(refCF, kCFNumberLongType, &usagePage);
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refCF = CFDictionaryGetValue(hidProperties, CFSTR(kIOHIDPrimaryUsageKey));
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if (refCF)
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CFNumberGetValue (refCF, kCFNumberLongType, &usage);
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if ((usagePage != kHIDPage_GenericDesktop) ||
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(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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/* We don't interested in this device */
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continue;
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}
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joystick_t * joystick = &_glfwJoysticks[deviceCounter];
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joystick->Present = GL_TRUE;
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result = IOCreatePlugInInterfaceForService(
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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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exit(EXIT_SUCCESS);
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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 (S_OK != plugInResult)
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exit(EXIT_FAILURE);
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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, RemovalCallback, joystick, joystick);
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/* Get product string */
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refCF = CFDictionaryGetValue(hidProperties, CFSTR(kIOHIDProductKey));
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if (refCF)
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CFStringGetCString(refCF, (char *) &(joystick->Product), 256, CFStringGetSystemEncoding());
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joystick->NumAxes = 0;
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joystick->NumButtons = 0;
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joystick->NumHats = 0;
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joystick->Axes = CFArrayCreateMutable(NULL, 0, NULL);
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joystick->Buttons = CFArrayCreateMutable(NULL, 0, NULL);
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joystick->Hats = CFArrayCreateMutable(NULL, 0, NULL);
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CFTypeRef refTopElement = CFDictionaryGetValue(hidProperties, CFSTR(kIOHIDElementKey));
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CFTypeID type = CFGetTypeID(refTopElement);
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if (type == CFArrayGetTypeID())
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{
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CFRange range = {0, CFArrayGetCount(refTopElement)};
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CFArrayApplyFunction(refTopElement, range, GetElementsCFArrayHandler, (void *) joystick);
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}
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deviceCounter++;
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}
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}
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//========================================================================
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// Close all opened joystick handles
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//========================================================================
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void _glfwTerminateJoysticks(void)
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{
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for (int i = 0; i < GLFW_JOYSTICK_LAST + 1; i++)
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{
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joystick_t * joystick = &_glfwJoysticks[i];
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RemoveJoystick(joystick);
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}
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}
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//////////////////////////////////////////////////////////////////////////
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////// GLFW platform API //////
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//////////////////////////////////////////////////////////////////////////
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@ -38,29 +420,108 @@
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// Determine joystick capabilities
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//========================================================================
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int _glfwPlatformGetJoystickParam( int joy, int param )
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int _glfwPlatformGetJoystickParam(int joy, int param)
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{
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// TODO: Implement this.
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if (!_glfwJoysticks[joy].Present)
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{
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// TODO: Figure out if this is an error
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return 0;
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}
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switch (param)
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{
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case GLFW_PRESENT:
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return GL_TRUE;
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case GLFW_AXES:
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return (int) CFArrayGetCount(_glfwJoysticks[joy].Axes);
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case GLFW_BUTTONS:
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return (int) CFArrayGetCount(_glfwJoysticks[joy].Buttons);
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default:
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break;
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}
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return 0;
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}
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//========================================================================
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// Get joystick axis positions
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//========================================================================
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int _glfwPlatformGetJoystickPos( int joy, float *pos, int numaxes )
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int _glfwPlatformGetJoystickPos(int joy, float *pos, int numaxes)
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{
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// TODO: Implement this.
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return 0;
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if (joy < GLFW_JOYSTICK_1 || joy > GLFW_JOYSTICK_LAST)
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return 0;
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joystick_t joystick = _glfwJoysticks[joy];
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if (!joystick.Present)
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{
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// TODO: Figure out if this is an error
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return 0;
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}
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numaxes = numaxes < joystick.NumAxes ? numaxes : joystick.NumAxes;
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// Update joystick state
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PollJoystickEvents();
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for (int i = 0; i < numaxes; i++)
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{
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joystick_element_t * axes =
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(joystick_element_t *) CFArrayGetValueAtIndex(joystick.Axes, i);
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long readScale = axes->MaxReport - axes->MinReport;
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if (readScale == 0)
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pos[i] = axes->Value;
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else
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pos[i] = (2.0f * (axes->Value - axes->MinReport) / readScale) - 1.0f;
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printf("%ld, %ld, %ld\n", axes->Value, axes->MinReport, axes->MaxReport);
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if (i & 1)
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pos[i] = -pos[i];
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}
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return numaxes;
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}
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//========================================================================
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// Get joystick button states
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//========================================================================
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int _glfwPlatformGetJoystickButtons( int joy, unsigned char *buttons, int numbuttons )
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int _glfwPlatformGetJoystickButtons(int joy, unsigned char *buttons,
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int numbuttons)
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{
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// TODO: Implement this.
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return 0;
|
||||
if (joy < GLFW_JOYSTICK_1 || joy > GLFW_JOYSTICK_LAST)
|
||||
return 0;
|
||||
|
||||
joystick_t joystick = _glfwJoysticks[joy];
|
||||
|
||||
if (!joystick.Present)
|
||||
{
|
||||
// TODO: Figure out if this is an error
|
||||
return 0;
|
||||
}
|
||||
|
||||
numbuttons = numbuttons < joystick.NumButtons ? numbuttons : joystick.NumButtons;
|
||||
|
||||
// Update joystick state
|
||||
PollJoystickEvents();
|
||||
|
||||
|
||||
for (int i = 0; i < numbuttons; i++)
|
||||
{
|
||||
joystick_element_t * button = (joystick_element_t *) CFArrayGetValueAtIndex(joystick.Buttons, i);
|
||||
buttons[i] = button->Value ? GLFW_PRESS : GLFW_RELEASE;
|
||||
}
|
||||
|
||||
return numbuttons;
|
||||
}
|
||||
|
||||
|
||||
|
||||
@ -97,4 +97,13 @@ typedef struct _GLFWlibraryNS
|
||||
} _GLFWlibraryNS;
|
||||
|
||||
|
||||
//========================================================================
|
||||
// Prototypes for platform specific internal functions
|
||||
//========================================================================
|
||||
|
||||
// Joystick input
|
||||
void _glfwInitJoysticks(void);
|
||||
void _glfwTerminateJoysticks(void);
|
||||
|
||||
|
||||
#endif // _platform_h_
|
||||
|
||||
Loading…
Reference in New Issue
Block a user