1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/hal/cocoa/CocoaGamepad.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,376 @@
1.4 +/* -*- Mode: C++; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +// mostly derived from the Allegro source code at:
1.10 +// http://alleg.svn.sourceforge.net/viewvc/alleg/allegro/branches/4.9/src/macosx/hidjoy.m?revision=13760&view=markup
1.11 +
1.12 +#include "mozilla/dom/GamepadService.h"
1.13 +#include <CoreFoundation/CoreFoundation.h>
1.14 +#include <IOKit/hid/IOHIDBase.h>
1.15 +#include <IOKit/hid/IOHIDKeys.h>
1.16 +#include <IOKit/hid/IOHIDManager.h>
1.17 +
1.18 +#include <stdio.h>
1.19 +#include <vector>
1.20 +
1.21 +namespace {
1.22 +
1.23 +using mozilla::dom::GamepadService;
1.24 +
1.25 +using std::vector;
1.26 +
1.27 +struct Button {
1.28 + int id;
1.29 + IOHIDElementRef element;
1.30 +};
1.31 +
1.32 +struct Axis {
1.33 + int id;
1.34 + IOHIDElementRef element;
1.35 + CFIndex min;
1.36 + CFIndex max;
1.37 +};
1.38 +
1.39 +// These values can be found in the USB HID Usage Tables:
1.40 +// http://www.usb.org/developers/hidpage
1.41 +#define GENERIC_DESKTOP_USAGE_PAGE 0x01
1.42 +#define JOYSTICK_USAGE_NUMBER 0x04
1.43 +#define GAMEPAD_USAGE_NUMBER 0x05
1.44 +#define AXIS_MIN_USAGE_NUMBER 0x30
1.45 +#define AXIS_MAX_USAGE_NUMBER 0x35
1.46 +#define BUTTON_USAGE_PAGE 0x09
1.47 +
1.48 +class Gamepad {
1.49 + private:
1.50 + IOHIDDeviceRef mDevice;
1.51 + vector<Button> buttons;
1.52 + vector<Axis> axes;
1.53 +
1.54 + public:
1.55 + Gamepad() : mDevice(nullptr), mSuperIndex(-1) {}
1.56 + bool operator==(IOHIDDeviceRef device) const { return mDevice == device; }
1.57 + bool empty() const { return mDevice == nullptr; }
1.58 + void clear() {
1.59 + mDevice = nullptr;
1.60 + buttons.clear();
1.61 + axes.clear();
1.62 + mSuperIndex = -1;
1.63 + }
1.64 + void init(IOHIDDeviceRef device);
1.65 + size_t numButtons() { return buttons.size(); }
1.66 + size_t numAxes() { return axes.size(); }
1.67 +
1.68 + // Index given by our superclass.
1.69 + uint32_t mSuperIndex;
1.70 +
1.71 + const Button* lookupButton(IOHIDElementRef element) const {
1.72 + for (size_t i = 0; i < buttons.size(); i++) {
1.73 + if (buttons[i].element == element)
1.74 + return &buttons[i];
1.75 + }
1.76 + return nullptr;
1.77 + }
1.78 +
1.79 + const Axis* lookupAxis(IOHIDElementRef element) const {
1.80 + for (size_t i = 0; i < axes.size(); i++) {
1.81 + if (axes[i].element == element)
1.82 + return &axes[i];
1.83 + }
1.84 + return nullptr;
1.85 + }
1.86 +};
1.87 +
1.88 +void Gamepad::init(IOHIDDeviceRef device) {
1.89 + clear();
1.90 + mDevice = device;
1.91 +
1.92 + CFArrayRef elements = IOHIDDeviceCopyMatchingElements(device,
1.93 + nullptr,
1.94 + kIOHIDOptionsTypeNone);
1.95 + CFIndex n = CFArrayGetCount(elements);
1.96 + for (CFIndex i = 0; i < n; i++) {
1.97 + IOHIDElementRef element = (IOHIDElementRef)CFArrayGetValueAtIndex(elements,
1.98 + i);
1.99 + uint32_t usagePage = IOHIDElementGetUsagePage(element);
1.100 + uint32_t usage = IOHIDElementGetUsage(element);
1.101 +
1.102 + if (usagePage == GENERIC_DESKTOP_USAGE_PAGE &&
1.103 + usage >= AXIS_MIN_USAGE_NUMBER &&
1.104 + usage <= AXIS_MAX_USAGE_NUMBER)
1.105 + {
1.106 + Axis axis = { int(axes.size()),
1.107 + element,
1.108 + IOHIDElementGetLogicalMin(element),
1.109 + IOHIDElementGetLogicalMax(element) };
1.110 + axes.push_back(axis);
1.111 + } else if (usagePage == BUTTON_USAGE_PAGE) {
1.112 + Button button = { int(usage) - 1, element };
1.113 + buttons.push_back(button);
1.114 + } else {
1.115 + //TODO: handle other usage pages
1.116 + }
1.117 + }
1.118 +}
1.119 +
1.120 +class DarwinGamepadService {
1.121 + private:
1.122 + IOHIDManagerRef mManager;
1.123 + vector<Gamepad> mGamepads;
1.124 +
1.125 + static void DeviceAddedCallback(void* data, IOReturn result,
1.126 + void* sender, IOHIDDeviceRef device);
1.127 + static void DeviceRemovedCallback(void* data, IOReturn result,
1.128 + void* sender, IOHIDDeviceRef device);
1.129 + static void InputValueChangedCallback(void* data, IOReturn result,
1.130 + void* sender, IOHIDValueRef newValue);
1.131 +
1.132 + void DeviceAdded(IOHIDDeviceRef device);
1.133 + void DeviceRemoved(IOHIDDeviceRef device);
1.134 + void InputValueChanged(IOHIDValueRef value);
1.135 +
1.136 + public:
1.137 + DarwinGamepadService();
1.138 + ~DarwinGamepadService();
1.139 + void Startup();
1.140 + void Shutdown();
1.141 +};
1.142 +
1.143 +void
1.144 +DarwinGamepadService::DeviceAdded(IOHIDDeviceRef device)
1.145 +{
1.146 + size_t slot = size_t(-1);
1.147 + for (size_t i = 0; i < mGamepads.size(); i++) {
1.148 + if (mGamepads[i] == device)
1.149 + return;
1.150 + if (slot == size_t(-1) && mGamepads[i].empty())
1.151 + slot = i;
1.152 + }
1.153 +
1.154 + if (slot == size_t(-1)) {
1.155 + slot = mGamepads.size();
1.156 + mGamepads.push_back(Gamepad());
1.157 + }
1.158 + mGamepads[slot].init(device);
1.159 +
1.160 + // Gather some identifying information
1.161 + CFNumberRef vendorIdRef =
1.162 + (CFNumberRef)IOHIDDeviceGetProperty(device, CFSTR(kIOHIDVendorIDKey));
1.163 + CFNumberRef productIdRef =
1.164 + (CFNumberRef)IOHIDDeviceGetProperty(device, CFSTR(kIOHIDProductIDKey));
1.165 + CFStringRef productRef =
1.166 + (CFStringRef)IOHIDDeviceGetProperty(device, CFSTR(kIOHIDProductKey));
1.167 + int vendorId, productId;
1.168 + CFNumberGetValue(vendorIdRef, kCFNumberIntType, &vendorId);
1.169 + CFNumberGetValue(productIdRef, kCFNumberIntType, &productId);
1.170 + char product_name[128];
1.171 + CFStringGetCString(productRef, product_name,
1.172 + sizeof(product_name), kCFStringEncodingASCII);
1.173 + char buffer[256];
1.174 + sprintf(buffer, "%x-%x-%s", vendorId, productId, product_name);
1.175 + nsRefPtr<GamepadService> service(GamepadService::GetService());
1.176 + mGamepads[slot].mSuperIndex = service->AddGamepad(buffer,
1.177 + mozilla::dom::NoMapping,
1.178 + (int)mGamepads[slot].numButtons(),
1.179 + (int)mGamepads[slot].numAxes());
1.180 +}
1.181 +
1.182 +void
1.183 +DarwinGamepadService::DeviceRemoved(IOHIDDeviceRef device)
1.184 +{
1.185 + nsRefPtr<GamepadService> service(GamepadService::GetService());
1.186 + for (size_t i = 0; i < mGamepads.size(); i++) {
1.187 + if (mGamepads[i] == device) {
1.188 + service->RemoveGamepad(mGamepads[i].mSuperIndex);
1.189 + mGamepads[i].clear();
1.190 + return;
1.191 + }
1.192 + }
1.193 +}
1.194 +
1.195 +void
1.196 +DarwinGamepadService::InputValueChanged(IOHIDValueRef value)
1.197 +{
1.198 + nsRefPtr<GamepadService> service(GamepadService::GetService());
1.199 + IOHIDElementRef element = IOHIDValueGetElement(value);
1.200 + IOHIDDeviceRef device = IOHIDElementGetDevice(element);
1.201 + for (size_t i = 0; i < mGamepads.size(); i++) {
1.202 + const Gamepad &gamepad = mGamepads[i];
1.203 + if (gamepad == device) {
1.204 + if (const Axis* axis = gamepad.lookupAxis(element)) {
1.205 + double d = IOHIDValueGetIntegerValue(value);
1.206 + double v = 2.0f * (d - axis->min) /
1.207 + (double)(axis->max - axis->min) - 1.0f;
1.208 + service->NewAxisMoveEvent(i, axis->id, v);
1.209 + } else if (const Button* button = gamepad.lookupButton(element)) {
1.210 + bool pressed = IOHIDValueGetIntegerValue(value) != 0;
1.211 + service->NewButtonEvent(i, button->id, pressed);
1.212 + }
1.213 + return;
1.214 + }
1.215 + }
1.216 +}
1.217 +
1.218 +void
1.219 +DarwinGamepadService::DeviceAddedCallback(void* data, IOReturn result,
1.220 + void* sender, IOHIDDeviceRef device)
1.221 +{
1.222 + DarwinGamepadService* service = (DarwinGamepadService*)data;
1.223 + service->DeviceAdded(device);
1.224 +}
1.225 +
1.226 +void
1.227 +DarwinGamepadService::DeviceRemovedCallback(void* data, IOReturn result,
1.228 + void* sender, IOHIDDeviceRef device)
1.229 +{
1.230 + DarwinGamepadService* service = (DarwinGamepadService*)data;
1.231 + service->DeviceRemoved(device);
1.232 +}
1.233 +
1.234 +void
1.235 +DarwinGamepadService::InputValueChangedCallback(void* data,
1.236 + IOReturn result,
1.237 + void* sender,
1.238 + IOHIDValueRef newValue)
1.239 +{
1.240 + DarwinGamepadService* service = (DarwinGamepadService*)data;
1.241 + service->InputValueChanged(newValue);
1.242 +}
1.243 +
1.244 +static CFMutableDictionaryRef
1.245 +MatchingDictionary(UInt32 inUsagePage, UInt32 inUsage)
1.246 +{
1.247 + CFMutableDictionaryRef dict =
1.248 + CFDictionaryCreateMutable(kCFAllocatorDefault,
1.249 + 0,
1.250 + &kCFTypeDictionaryKeyCallBacks,
1.251 + &kCFTypeDictionaryValueCallBacks);
1.252 + if (!dict)
1.253 + return nullptr;
1.254 + CFNumberRef number = CFNumberCreate(kCFAllocatorDefault,
1.255 + kCFNumberIntType,
1.256 + &inUsagePage);
1.257 + if (!number) {
1.258 + CFRelease(dict);
1.259 + return nullptr;
1.260 + }
1.261 + CFDictionarySetValue(dict, CFSTR(kIOHIDDeviceUsagePageKey), number);
1.262 + CFRelease(number);
1.263 +
1.264 + number = CFNumberCreate(kCFAllocatorDefault, kCFNumberIntType, &inUsage);
1.265 + if (!number) {
1.266 + CFRelease(dict);
1.267 + return nullptr;
1.268 + }
1.269 + CFDictionarySetValue(dict, CFSTR(kIOHIDDeviceUsageKey), number);
1.270 + CFRelease(number);
1.271 +
1.272 + return dict;
1.273 +}
1.274 +
1.275 +DarwinGamepadService::DarwinGamepadService() : mManager(nullptr) {}
1.276 +
1.277 +DarwinGamepadService::~DarwinGamepadService()
1.278 +{
1.279 + if (mManager != nullptr)
1.280 + CFRelease(mManager);
1.281 +}
1.282 +
1.283 +void DarwinGamepadService::Startup()
1.284 +{
1.285 + if (mManager != nullptr)
1.286 + return;
1.287 +
1.288 + IOHIDManagerRef manager = IOHIDManagerCreate(kCFAllocatorDefault,
1.289 + kIOHIDOptionsTypeNone);
1.290 +
1.291 + CFMutableDictionaryRef criteria_arr[2];
1.292 + criteria_arr[0] = MatchingDictionary(GENERIC_DESKTOP_USAGE_PAGE,
1.293 + JOYSTICK_USAGE_NUMBER);
1.294 + if (!criteria_arr[0]) {
1.295 + CFRelease(manager);
1.296 + return;
1.297 + }
1.298 +
1.299 + criteria_arr[1] = MatchingDictionary(GENERIC_DESKTOP_USAGE_PAGE,
1.300 + GAMEPAD_USAGE_NUMBER);
1.301 + if (!criteria_arr[1]) {
1.302 + CFRelease(criteria_arr[0]);
1.303 + CFRelease(manager);
1.304 + return;
1.305 + }
1.306 +
1.307 + CFArrayRef criteria =
1.308 + CFArrayCreate(kCFAllocatorDefault, (const void**)criteria_arr, 2, nullptr);
1.309 + if (!criteria) {
1.310 + CFRelease(criteria_arr[1]);
1.311 + CFRelease(criteria_arr[0]);
1.312 + CFRelease(manager);
1.313 + return;
1.314 + }
1.315 +
1.316 + IOHIDManagerSetDeviceMatchingMultiple(manager, criteria);
1.317 + CFRelease(criteria);
1.318 + CFRelease(criteria_arr[1]);
1.319 + CFRelease(criteria_arr[0]);
1.320 +
1.321 + IOHIDManagerRegisterDeviceMatchingCallback(manager,
1.322 + DeviceAddedCallback,
1.323 + this);
1.324 + IOHIDManagerRegisterDeviceRemovalCallback(manager,
1.325 + DeviceRemovedCallback,
1.326 + this);
1.327 + IOHIDManagerRegisterInputValueCallback(manager,
1.328 + InputValueChangedCallback,
1.329 + this);
1.330 + IOHIDManagerScheduleWithRunLoop(manager,
1.331 + CFRunLoopGetCurrent(),
1.332 + kCFRunLoopDefaultMode);
1.333 + IOReturn rv = IOHIDManagerOpen(manager, kIOHIDOptionsTypeNone);
1.334 + if (rv != kIOReturnSuccess) {
1.335 + CFRelease(manager);
1.336 + return;
1.337 + }
1.338 +
1.339 + mManager = manager;
1.340 +}
1.341 +
1.342 +void DarwinGamepadService::Shutdown()
1.343 +{
1.344 + IOHIDManagerRef manager = (IOHIDManagerRef)mManager;
1.345 + if (manager) {
1.346 + IOHIDManagerClose(manager, 0);
1.347 + CFRelease(manager);
1.348 + mManager = nullptr;
1.349 + }
1.350 +}
1.351 +
1.352 +} // namespace
1.353 +
1.354 +namespace mozilla {
1.355 +namespace hal_impl {
1.356 +
1.357 +DarwinGamepadService* gService = nullptr;
1.358 +
1.359 +void StartMonitoringGamepadStatus()
1.360 +{
1.361 + if (gService)
1.362 + return;
1.363 +
1.364 + gService = new DarwinGamepadService();
1.365 + gService->Startup();
1.366 +}
1.367 +
1.368 +void StopMonitoringGamepadStatus()
1.369 +{
1.370 + if (!gService)
1.371 + return;
1.372 +
1.373 + gService->Shutdown();
1.374 + delete gService;
1.375 + gService = nullptr;
1.376 +}
1.377 +
1.378 +} // namespace hal_impl
1.379 +} // namespace mozilla
