2 // NJDeviceController.m
5 // Created by Sam McCall on 4/05/09.
8 #import "NJDeviceController.h"
11 #import "NJMappingsController.h"
17 @implementation NJDeviceController {
18 NJHIDManager *_hidManager;
19 NSTimer *_continuousOutputsTick;
20 NSMutableArray *_continousOutputs;
21 NSMutableArray *_devices;
24 #define NSSTR(e) ((NSString *)CFSTR(e))
27 if ((self = [super init])) {
28 _devices = [[NSMutableArray alloc] initWithCapacity:16];
29 _continousOutputs = [[NSMutableArray alloc] initWithCapacity:32];
31 _hidManager = [[NJHIDManager alloc] initWithCriteria:@[
32 @{ NSSTR(kIOHIDDeviceUsagePageKey) : @(kHIDPage_GenericDesktop),
33 NSSTR(kIOHIDDeviceUsageKey) : @(kHIDUsage_GD_Joystick) },
34 @{ NSSTR(kIOHIDDeviceUsagePageKey) : @(kHIDPage_GenericDesktop),
35 NSSTR(kIOHIDDeviceUsageKey) : @(kHIDUsage_GD_GamePad) },
36 @{ NSSTR(kIOHIDDeviceUsagePageKey) : @(kHIDPage_GenericDesktop),
37 NSSTR(kIOHIDDeviceUsageKey) : @(kHIDUsage_GD_MultiAxisController) }
41 // The HID manager uses 5-10ms per second doing basically
42 // nothing if a noisy device is plugged in (the % of that
43 // spent in input_callback is negligible, so it's not
44 // something we can make faster). I don't really think that's
45 // acceptable, CPU/power wise. So if simulation is disabled
46 // and the window is closed, just switch off the HID manager
47 // entirely. This probably also has some marginal benefits for
48 // compatibility with other applications that want exclusive
50 [NSNotificationCenter.defaultCenter
52 selector:@selector(stopHidIfDisabled:)
53 name:NSApplicationDidResignActiveNotification
55 [NSNotificationCenter.defaultCenter
57 selector:@selector(startHid)
58 name:NSApplicationDidBecomeActiveNotification
65 [NSNotificationCenter.defaultCenter removeObserver:self];
66 [_continuousOutputsTick invalidate];
69 - (void)addRunningOutput:(NJOutput *)output {
70 // Axis events will trigger every small movement, don't keep
71 // re-adding them or they trigger multiple times each time.
72 if (![_continousOutputs containsObject:output])
73 [_continousOutputs addObject:output];
74 if (!_continuousOutputsTick) {
75 _continuousOutputsTick = [NSTimer scheduledTimerWithTimeInterval:1.0/60.0
77 selector:@selector(updateContinuousOutputs:)
83 - (void)runOutputForDevice:(IOHIDDeviceRef)device value:(IOHIDValueRef)value {
84 NJDevice *dev = [self findDeviceByRef:device];
85 NJInput *mainInput = [dev inputForEvent:value];
86 [mainInput notifyEvent:value];
87 NSArray *children = mainInput.children ? mainInput.children : mainInput ? @[mainInput] : @[];
88 for (NJInput *subInput in children) {
89 NJOutput *output = mappingsController.currentMapping[subInput];
90 output.magnitude = subInput.magnitude;
91 output.running = subInput.active;
92 if ((output.running || output.magnitude) && output.isContinuous)
93 [self addRunningOutput:output];
97 - (void)showOutputForDevice:(IOHIDDeviceRef)device value:(IOHIDValueRef)value {
98 NJDevice *dev = [self findDeviceByRef:device];
99 NJInput *handler = [dev handlerForEvent:value];
103 [self.delegate deviceController:self didInput:handler];
106 - (void)hidManager:(NJHIDManager *)manager
107 valueChanged:(IOHIDValueRef)value
108 fromDevice:(IOHIDDeviceRef)device {
109 if (self.simulatingEvents
110 && !NSApplication.sharedApplication.isActive) {
111 [self runOutputForDevice:device value:value];
113 [self showOutputForDevice:device value:value];
117 - (void)addDevice:(NJDevice *)device {
121 for (NJDevice *used in _devices) {
122 if ([used isEqual:device]) {
127 } while (!available);
129 [_devices addObject:device];
132 - (void)hidManager:(NJHIDManager *)manager deviceAdded:(IOHIDDeviceRef)device {
133 NJDevice *match = [[NJDevice alloc] initWithDevice:device];
134 [self addDevice:match];
135 [self.delegate deviceController:self didAddDevice:match];
138 - (NJDevice *)findDeviceByRef:(IOHIDDeviceRef)device {
139 for (NJDevice *dev in _devices)
140 if (dev.device == device)
145 - (void)hidManager:(NJHIDManager *)manager deviceRemoved:(IOHIDDeviceRef)device {
146 NJDevice *match = [self findDeviceByRef:device];
148 NSInteger idx = [_devices indexOfObjectIdenticalTo:match];
149 [_devices removeObjectAtIndex:idx];
150 [self.delegate deviceController:self didRemoveDeviceAtIndex:idx];
154 - (void)updateContinuousOutputs:(NSTimer *)timer {
155 self.mouseLoc = [NSEvent mouseLocation];
156 for (NJOutput *output in [_continousOutputs copy]) {
157 if (![output update:self]) {
158 [_continousOutputs removeObject:output];
161 if (!_continousOutputs.count) {
162 [_continuousOutputsTick invalidate];
163 _continuousOutputsTick = nil;
167 - (void)hidManager:(NJHIDManager *)manager didError:(NSError *)error {
168 [self.delegate deviceController:self didError:error];
169 self.simulatingEvents = NO;
172 - (void)hidManagerDidStart:(NJHIDManager *)manager {
173 [self.delegate deviceControllerDidStartHID:self];
176 - (void)hidManagerDidStop:(NJHIDManager *)manager {
177 [_devices removeAllObjects];
178 [self.delegate deviceControllerDidStopHID:self];
189 - (void)setSimulatingEvents:(BOOL)simulatingEvents {
190 if (simulatingEvents != _simulatingEvents) {
191 _simulatingEvents = simulatingEvents;
192 NSString *name = simulatingEvents
193 ? NJEventSimulationStarted
194 : NJEventSimulationStopped;
195 [NSNotificationCenter.defaultCenter postNotificationName:name
198 if (!simulatingEvents && !NSApplication.sharedApplication.isActive)
205 - (void)stopHidIfDisabled:(NSNotification *)application {
206 if (!self.simulatingEvents && !NSProcessInfo.processInfo.isBeingDebugged)
210 - (NJInputPathElement *)elementForUID:(NSString *)uid {
211 for (NJDevice *dev in _devices) {
212 id item = [dev elementForUID:uid];