diff options
Diffstat (limited to 'libs/glfw-3.3.8/src/cocoa_joystick.m')
| -rw-r--r-- | libs/glfw-3.3.8/src/cocoa_joystick.m | 488 |
1 files changed, 488 insertions, 0 deletions
diff --git a/libs/glfw-3.3.8/src/cocoa_joystick.m b/libs/glfw-3.3.8/src/cocoa_joystick.m new file mode 100644 index 0000000..3d30677 --- /dev/null +++ b/libs/glfw-3.3.8/src/cocoa_joystick.m @@ -0,0 +1,488 @@ +//======================================================================== +// GLFW 3.3 Cocoa - www.glfw.org +//------------------------------------------------------------------------ +// Copyright (c) 2009-2019 Camilla Löwy <elmindreda@glfw.org> +// Copyright (c) 2012 Torsten Walluhn <tw@mad-cad.net> +// +// 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. +// +//======================================================================== +// It is fine to use C99 in this file because it will not be built with VS +//======================================================================== + +#include "internal.h" + +#include <unistd.h> +#include <ctype.h> +#include <string.h> + +#include <mach/mach.h> +#include <mach/mach_error.h> + +#include <CoreFoundation/CoreFoundation.h> +#include <Kernel/IOKit/hidsystem/IOHIDUsageTables.h> + + +// Joystick element information +// +typedef struct _GLFWjoyelementNS +{ + IOHIDElementRef native; + uint32_t usage; + int index; + long minimum; + long maximum; + +} _GLFWjoyelementNS; + + +// Returns the value of the specified element of the specified joystick +// +static long getElementValue(_GLFWjoystick* js, _GLFWjoyelementNS* element) +{ + IOHIDValueRef valueRef; + long value = 0; + + if (js->ns.device) + { + if (IOHIDDeviceGetValue(js->ns.device, + element->native, + &valueRef) == kIOReturnSuccess) + { + value = IOHIDValueGetIntegerValue(valueRef); + } + } + + return value; +} + +// Comparison function for matching the SDL element order +// +static CFComparisonResult compareElements(const void* fp, + const void* sp, + void* user) +{ + const _GLFWjoyelementNS* fe = fp; + const _GLFWjoyelementNS* se = sp; + if (fe->usage < se->usage) + return kCFCompareLessThan; + if (fe->usage > se->usage) + return kCFCompareGreaterThan; + if (fe->index < se->index) + return kCFCompareLessThan; + if (fe->index > se->index) + return kCFCompareGreaterThan; + return kCFCompareEqualTo; +} + +// Removes the specified joystick +// +static void closeJoystick(_GLFWjoystick* js) +{ + int i; + + _glfwInputJoystick(js, GLFW_DISCONNECTED); + + for (i = 0; i < CFArrayGetCount(js->ns.axes); i++) + free((void*) CFArrayGetValueAtIndex(js->ns.axes, i)); + CFRelease(js->ns.axes); + + for (i = 0; i < CFArrayGetCount(js->ns.buttons); i++) + free((void*) CFArrayGetValueAtIndex(js->ns.buttons, i)); + CFRelease(js->ns.buttons); + + for (i = 0; i < CFArrayGetCount(js->ns.hats); i++) + free((void*) CFArrayGetValueAtIndex(js->ns.hats, i)); + CFRelease(js->ns.hats); + + _glfwFreeJoystick(js); +} + +// Callback for user-initiated joystick addition +// +static void matchCallback(void* context, + IOReturn result, + void* sender, + IOHIDDeviceRef device) +{ + int jid; + char name[256]; + char guid[33]; + CFIndex i; + CFTypeRef property; + uint32_t vendor = 0, product = 0, version = 0; + _GLFWjoystick* js; + CFMutableArrayRef axes, buttons, hats; + + for (jid = 0; jid <= GLFW_JOYSTICK_LAST; jid++) + { + if (_glfw.joysticks[jid].ns.device == device) + return; + } + + axes = CFArrayCreateMutable(NULL, 0, NULL); + buttons = CFArrayCreateMutable(NULL, 0, NULL); + hats = CFArrayCreateMutable(NULL, 0, NULL); + + property = IOHIDDeviceGetProperty(device, CFSTR(kIOHIDProductKey)); + if (property) + { + CFStringGetCString(property, + name, + sizeof(name), + kCFStringEncodingUTF8); + } + else + strncpy(name, "Unknown", sizeof(name)); + + property = IOHIDDeviceGetProperty(device, CFSTR(kIOHIDVendorIDKey)); + if (property) + CFNumberGetValue(property, kCFNumberSInt32Type, &vendor); + + property = IOHIDDeviceGetProperty(device, CFSTR(kIOHIDProductIDKey)); + if (property) + CFNumberGetValue(property, kCFNumberSInt32Type, &product); + + property = IOHIDDeviceGetProperty(device, CFSTR(kIOHIDVersionNumberKey)); + if (property) + CFNumberGetValue(property, kCFNumberSInt32Type, &version); + + // Generate a joystick GUID that matches the SDL 2.0.5+ one + if (vendor && product) + { + sprintf(guid, "03000000%02x%02x0000%02x%02x0000%02x%02x0000", + (uint8_t) vendor, (uint8_t) (vendor >> 8), + (uint8_t) product, (uint8_t) (product >> 8), + (uint8_t) version, (uint8_t) (version >> 8)); + } + else + { + sprintf(guid, "05000000%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x00", + name[0], name[1], name[2], name[3], + name[4], name[5], name[6], name[7], + name[8], name[9], name[10]); + } + + CFArrayRef elements = + IOHIDDeviceCopyMatchingElements(device, NULL, kIOHIDOptionsTypeNone); + + for (i = 0; i < CFArrayGetCount(elements); i++) + { + IOHIDElementRef native = (IOHIDElementRef) + CFArrayGetValueAtIndex(elements, i); + if (CFGetTypeID(native) != IOHIDElementGetTypeID()) + continue; + + const IOHIDElementType type = IOHIDElementGetType(native); + if ((type != kIOHIDElementTypeInput_Axis) && + (type != kIOHIDElementTypeInput_Button) && + (type != kIOHIDElementTypeInput_Misc)) + { + continue; + } + + CFMutableArrayRef target = NULL; + + const uint32_t usage = IOHIDElementGetUsage(native); + const uint32_t page = IOHIDElementGetUsagePage(native); + if (page == 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: + target = axes; + break; + case kHIDUsage_GD_Hatswitch: + target = hats; + break; + case kHIDUsage_GD_DPadUp: + case kHIDUsage_GD_DPadRight: + case kHIDUsage_GD_DPadDown: + case kHIDUsage_GD_DPadLeft: + case kHIDUsage_GD_SystemMainMenu: + case kHIDUsage_GD_Select: + case kHIDUsage_GD_Start: + target = buttons; + break; + } + } + else if (page == kHIDPage_Simulation) + { + switch (usage) + { + case kHIDUsage_Sim_Accelerator: + case kHIDUsage_Sim_Brake: + case kHIDUsage_Sim_Throttle: + case kHIDUsage_Sim_Rudder: + case kHIDUsage_Sim_Steering: + target = axes; + break; + } + } + else if (page == kHIDPage_Button || page == kHIDPage_Consumer) + target = buttons; + + if (target) + { + _GLFWjoyelementNS* element = calloc(1, sizeof(_GLFWjoyelementNS)); + element->native = native; + element->usage = usage; + element->index = (int) CFArrayGetCount(target); + element->minimum = IOHIDElementGetLogicalMin(native); + element->maximum = IOHIDElementGetLogicalMax(native); + CFArrayAppendValue(target, element); + } + } + + CFRelease(elements); + + CFArraySortValues(axes, CFRangeMake(0, CFArrayGetCount(axes)), + compareElements, NULL); + CFArraySortValues(buttons, CFRangeMake(0, CFArrayGetCount(buttons)), + compareElements, NULL); + CFArraySortValues(hats, CFRangeMake(0, CFArrayGetCount(hats)), + compareElements, NULL); + + js = _glfwAllocJoystick(name, guid, + (int) CFArrayGetCount(axes), + (int) CFArrayGetCount(buttons), + (int) CFArrayGetCount(hats)); + + js->ns.device = device; + js->ns.axes = axes; + js->ns.buttons = buttons; + js->ns.hats = hats; + + _glfwInputJoystick(js, GLFW_CONNECTED); +} + +// Callback for user-initiated joystick removal +// +static void removeCallback(void* context, + IOReturn result, + void* sender, + IOHIDDeviceRef device) +{ + int jid; + + for (jid = 0; jid <= GLFW_JOYSTICK_LAST; jid++) + { + if (_glfw.joysticks[jid].connected && _glfw.joysticks[jid].ns.device == device) + { + closeJoystick(&_glfw.joysticks[jid]); + break; + } + } +} + + +////////////////////////////////////////////////////////////////////////// +////// GLFW internal API ////// +////////////////////////////////////////////////////////////////////////// + +// Initialize joystick interface +// +void _glfwInitJoysticksNS(void) +{ + CFMutableArrayRef matching; + const long usages[] = + { + kHIDUsage_GD_Joystick, + kHIDUsage_GD_GamePad, + kHIDUsage_GD_MultiAxisController + }; + + _glfw.ns.hidManager = IOHIDManagerCreate(kCFAllocatorDefault, + kIOHIDOptionsTypeNone); + + matching = CFArrayCreateMutable(kCFAllocatorDefault, + 0, + &kCFTypeArrayCallBacks); + if (!matching) + { + _glfwInputError(GLFW_PLATFORM_ERROR, "Cocoa: Failed to create array"); + return; + } + + for (size_t i = 0; i < sizeof(usages) / sizeof(long); i++) + { + const long page = kHIDPage_GenericDesktop; + + CFMutableDictionaryRef dict = + CFDictionaryCreateMutable(kCFAllocatorDefault, + 0, + &kCFTypeDictionaryKeyCallBacks, + &kCFTypeDictionaryValueCallBacks); + if (!dict) + continue; + + CFNumberRef pageRef = CFNumberCreate(kCFAllocatorDefault, + kCFNumberLongType, + &page); + CFNumberRef usageRef = CFNumberCreate(kCFAllocatorDefault, + kCFNumberLongType, + &usages[i]); + if (pageRef && usageRef) + { + CFDictionarySetValue(dict, + CFSTR(kIOHIDDeviceUsagePageKey), + pageRef); + CFDictionarySetValue(dict, + CFSTR(kIOHIDDeviceUsageKey), + usageRef); + CFArrayAppendValue(matching, dict); + } + + if (pageRef) + CFRelease(pageRef); + if (usageRef) + CFRelease(usageRef); + + CFRelease(dict); + } + + IOHIDManagerSetDeviceMatchingMultiple(_glfw.ns.hidManager, matching); + CFRelease(matching); + + IOHIDManagerRegisterDeviceMatchingCallback(_glfw.ns.hidManager, + &matchCallback, NULL); + IOHIDManagerRegisterDeviceRemovalCallback(_glfw.ns.hidManager, + &removeCallback, NULL); + IOHIDManagerScheduleWithRunLoop(_glfw.ns.hidManager, + CFRunLoopGetMain(), + kCFRunLoopDefaultMode); + IOHIDManagerOpen(_glfw.ns.hidManager, kIOHIDOptionsTypeNone); + + // Execute the run loop once in order to register any initially-attached + // joysticks + CFRunLoopRunInMode(kCFRunLoopDefaultMode, 0, false); +} + +// Close all opened joystick handles +// +void _glfwTerminateJoysticksNS(void) +{ + int jid; + + for (jid = 0; jid <= GLFW_JOYSTICK_LAST; jid++) + { + if (_glfw.joysticks[jid].connected) + closeJoystick(&_glfw.joysticks[jid]); + } + + CFRelease(_glfw.ns.hidManager); + _glfw.ns.hidManager = NULL; +} + + +////////////////////////////////////////////////////////////////////////// +////// GLFW platform API ////// +////////////////////////////////////////////////////////////////////////// + +int _glfwPlatformPollJoystick(_GLFWjoystick* js, int mode) +{ + if (mode & _GLFW_POLL_AXES) + { + CFIndex i; + + for (i = 0; i < CFArrayGetCount(js->ns.axes); i++) + { + _GLFWjoyelementNS* axis = (_GLFWjoyelementNS*) + CFArrayGetValueAtIndex(js->ns.axes, i); + + const long raw = getElementValue(js, axis); + // Perform auto calibration + if (raw < axis->minimum) + axis->minimum = raw; + if (raw > axis->maximum) + axis->maximum = raw; + + const long size = axis->maximum - axis->minimum; + if (size == 0) + _glfwInputJoystickAxis(js, (int) i, 0.f); + else + { + const float value = (2.f * (raw - axis->minimum) / size) - 1.f; + _glfwInputJoystickAxis(js, (int) i, value); + } + } + } + + if (mode & _GLFW_POLL_BUTTONS) + { + CFIndex i; + + for (i = 0; i < CFArrayGetCount(js->ns.buttons); i++) + { + _GLFWjoyelementNS* button = (_GLFWjoyelementNS*) + CFArrayGetValueAtIndex(js->ns.buttons, i); + const char value = getElementValue(js, button) - button->minimum; + const int state = (value > 0) ? GLFW_PRESS : GLFW_RELEASE; + _glfwInputJoystickButton(js, (int) i, state); + } + + for (i = 0; i < CFArrayGetCount(js->ns.hats); i++) + { + const int states[9] = + { + GLFW_HAT_UP, + GLFW_HAT_RIGHT_UP, + GLFW_HAT_RIGHT, + GLFW_HAT_RIGHT_DOWN, + GLFW_HAT_DOWN, + GLFW_HAT_LEFT_DOWN, + GLFW_HAT_LEFT, + GLFW_HAT_LEFT_UP, + GLFW_HAT_CENTERED + }; + + _GLFWjoyelementNS* hat = (_GLFWjoyelementNS*) + CFArrayGetValueAtIndex(js->ns.hats, i); + long state = getElementValue(js, hat) - hat->minimum; + if (state < 0 || state > 8) + state = 8; + + _glfwInputJoystickHat(js, (int) i, states[state]); + } + } + + return js->connected; +} + +void _glfwPlatformUpdateGamepadGUID(char* guid) +{ + if ((strncmp(guid + 4, "000000000000", 12) == 0) && + (strncmp(guid + 20, "000000000000", 12) == 0)) + { + char original[33]; + strncpy(original, guid, sizeof(original) - 1); + sprintf(guid, "03000000%.4s0000%.4s000000000000", + original, original + 16); + } +} + |