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+/**
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+ * PANDA 3D SOFTWARE
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+ * Copyright (c) Carnegie Mellon University. All rights reserved.
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+ *
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+ * All use of this software is subject to the terms of the revised BSD
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+ * license. You should have received a copy of this license along
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+ * with this source code in a file named "LICENSE."
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+ *
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+ * @file ioKitInputDeviceManager.cxx
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+ * @author rdb
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+ * @date 2018-02-04
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+ */
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+
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+#include "ioKitInputDeviceManager.h"
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+#include "ioKitInputDevice.h"
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+
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+#if defined(__APPLE__) && !defined(CPPPARSER)
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+
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+/**
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+ * Initializes the input device manager by scanning which devices are currently
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+ * connected and setting up any platform-dependent structures necessary for
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+ * listening for future device connect events.
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+ */
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+IOKitInputDeviceManager::
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+IOKitInputDeviceManager() {
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+ _hid_manager = IOHIDManagerCreate(kCFAllocatorDefault, kIOHIDOptionsTypeNone);
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+ if (!_hid_manager) {
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+ device_cat.error()
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+ << "Failed to create an IOHIDManager.\n";
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+ return;
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+ }
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+
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+ // The types of devices we're interested in.
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+ int page = kHIDPage_GenericDesktop;
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+ int usages[] = {kHIDUsage_GD_GamePad,
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+ kHIDUsage_GD_Joystick,
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+ kHIDUsage_GD_Mouse,
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+ kHIDUsage_GD_Keyboard,
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+ kHIDUsage_GD_MultiAxisController, 0};
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+ int *usage = usages;
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+
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+ // This giant mess is necessary to create an array of match dictionaries
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+ // that will match the devices we're interested in.
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+ CFMutableArrayRef match = CFArrayCreateMutable(kCFAllocatorDefault, 0, &kCFTypeArrayCallBacks);
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+ nassertv(match);
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+ while (*usage) {
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+ CFMutableDictionaryRef dict = CFDictionaryCreateMutable(kCFAllocatorDefault, 0, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
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+ CFNumberRef page_ref = CFNumberCreate(kCFAllocatorDefault, kCFNumberIntType, &page);
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+ CFDictionarySetValue(dict, CFSTR(kIOHIDDeviceUsagePageKey), page_ref);
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+ CFRelease(page_ref);
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+ CFNumberRef usage_ref = CFNumberCreate(kCFAllocatorDefault, kCFNumberIntType, usage);
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+ CFDictionarySetValue(dict, CFSTR(kIOHIDDeviceUsageKey), usage_ref);
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+ CFRelease(usage_ref);
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+ CFArrayAppendValue(match, dict);
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+ CFRelease(dict);
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+ ++usage;
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+ }
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+ IOHIDManagerSetDeviceMatchingMultiple(_hid_manager, match);
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+ CFRelease(match);
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+
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+ IOHIDManagerRegisterDeviceMatchingCallback(_hid_manager, on_match_device, this);
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+ IOHIDManagerScheduleWithRunLoop(_hid_manager, CFRunLoopGetMain(), kCFRunLoopCommonModes);
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+ IOHIDManagerOpen(_hid_manager, kIOHIDOptionsTypeNone);
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+}
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+
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+/**
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+ * Closes any resources that the device manager was using to listen for events.
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+ */
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+IOKitInputDeviceManager::
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+~IOKitInputDeviceManager() {
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+ IOHIDManagerUnscheduleFromRunLoop(_hid_manager, CFRunLoopGetMain(), kCFRunLoopCommonModes);
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+ IOHIDManagerClose(_hid_manager, kIOHIDOptionsTypeNone);
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+ CFRelease(_hid_manager);
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+}
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+
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+/**
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+ * Called by IOKit when an input device matching our filters has been found.
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+ */
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+void IOKitInputDeviceManager::
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+on_match_device(void *ctx, IOReturn result, void *sender, IOHIDDeviceRef device) {
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+ InputDeviceManager *mgr = (InputDeviceManager *)ctx;
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+ nassertv(mgr != nullptr);
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+ nassertv(device);
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+
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+ PT(InputDevice) input_device = new IOKitInputDevice(device);
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+ if (device_cat.is_debug()) {
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+ device_cat.debug()
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+ << "Discovered input device " << *input_device << "\n";
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+ }
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+ mgr->add_device(input_device);
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+}
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+
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+#endif
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rdb