// Created by Sam McCall on 4/05/09.
//
-@implementation Joystick
+#import "Joystick.h"
+#import "JSAction.h"
+#import "JSActionAnalog.h"
+#import "JSActionButton.h"
+#import "JSActionHat.h"
-@synthesize vendorId, productId, productName, name, index, device, children;
+static NSArray *ActionsForElement(IOHIDDeviceRef device, id base) {
+ CFArrayRef elements = IOHIDDeviceCopyMatchingElements(device, NULL, kIOHIDOptionsTypeNone);
+ NSMutableArray *children = [NSMutableArray arrayWithCapacity:CFArrayGetCount(elements)];
+
+ int buttons = 0;
+ int axes = 0;
+ int hats = 0;
+
+ for (int i = 0; i < CFArrayGetCount(elements); i++) {
+ IOHIDElementRef element = (IOHIDElementRef)CFArrayGetValueAtIndex(elements, i);
+ int type = IOHIDElementGetType(element);
+ unsigned usage = IOHIDElementGetUsage(element);
+ unsigned usagePage = IOHIDElementGetUsagePage(element);
+ long max = IOHIDElementGetPhysicalMax(element);
+ long min = IOHIDElementGetPhysicalMin(element);
+ CFStringRef elName = IOHIDElementGetName(element);
+
+ JSAction *action = nil;
+
+ if (!(type == kIOHIDElementTypeInput_Misc
+ || type == kIOHIDElementTypeInput_Axis
+ || type == kIOHIDElementTypeInput_Button))
+ continue;
+
+ if (max - min == 1 || usagePage == kHIDPage_Button || type == kIOHIDElementTypeInput_Button) {
+ action = [[JSActionButton alloc] initWithName:(__bridge NSString *)elName
+ idx:++buttons
+ max:max];
+ } else if (usage == kHIDUsage_GD_Hatswitch) {
+ action = [[JSActionHat alloc] initWithIndex:++hats];
+ } else if (usage >= kHIDUsage_GD_X && usage <= kHIDUsage_GD_Rz) {
+ action = [[JSActionAnalog alloc] initWithIndex:++axes
+ rawMin:min
+ rawMax:max];
+ } else {
+ continue;
+ }
+
+ // TODO(jfw): Should be moved into better constructors.
+ action.base = base;
+ action.cookie = IOHIDElementGetCookie(element);
+ [children addObject:action];
+ }
--(id)initWithDevice: (IOHIDDeviceRef) newDevice {
- if(self=[super init]) {
- children = [[NSMutableArray alloc]init];
-
- device = newDevice;
- productName = (NSString*)IOHIDDeviceGetProperty( device, CFSTR(kIOHIDProductKey) );
- vendorId = [(NSNumber*)IOHIDDeviceGetProperty(device, CFSTR(kIOHIDVendorIDKey)) intValue];
- productId = [(NSNumber*)IOHIDDeviceGetProperty(device, CFSTR(kIOHIDVendorIDKey)) intValue];
-
- name = productName;
- }
- return self;
+ CFRelease(elements);
+ return children;
}
--(void) setIndex: (int) newIndex {
- index = newIndex;
- name = [[NSString alloc] initWithFormat: @"%@ #%d", productName, (index+1)];
-}
--(int) index {
- return index;
+@implementation Joystick {
+ int vendorId;
+ int productId;
}
--(void) invalidate {
- IOHIDDeviceClose(device, kIOHIDOptionsTypeNone);
- NSLog(@"Removed a device: %@", [self name]);
+- (id)initWithDevice:(IOHIDDeviceRef)dev {
+ if ((self = [super init])) {
+ self.device = dev;
+ self.productName = (__bridge NSString *)IOHIDDeviceGetProperty(dev, CFSTR(kIOHIDProductKey));
+ vendorId = [(__bridge NSNumber *)IOHIDDeviceGetProperty(dev, CFSTR(kIOHIDVendorIDKey)) intValue];
+ productId = [(__bridge NSNumber *)IOHIDDeviceGetProperty(dev, CFSTR(kIOHIDProductIDKey)) intValue];
+ self.children = ActionsForElement(dev, self);
+ }
+ return self;
}
--(id) base {
- return NULL;
+- (NSString *)name {
+ return [NSString stringWithFormat:@"%@ #%d", _productName, _index];
}
--(void) populateActions {
- NSArray* elements = (NSArray*)IOHIDDeviceCopyMatchingElements(device, NULL, kIOHIDOptionsTypeNone);
-
- int buttons = 0;
- int axes = 0;
-
- for(int i=0; i<[elements count]; i++) {
- IOHIDElementRef element = (IOHIDElementRef)[elements objectAtIndex: i];
- int type = IOHIDElementGetType(element);
- int usage = IOHIDElementGetUsage(element);
- int usagePage = IOHIDElementGetUsagePage(element);
- int max = IOHIDElementGetPhysicalMax(element);
- int min = IOHIDElementGetPhysicalMin(element);
- CFStringRef elName = IOHIDElementGetName(element);
-
-// if(usagePage != 1 || usagePage == 9) {
-// NSLog(@"Skipping usage page %x usage %x", usagePage, usage);
-// continue;
-// }
-
- JSAction* action = NULL;
-
- if(!(type == kIOHIDElementTypeInput_Misc || type == kIOHIDElementTypeInput_Axis ||
- type == kIOHIDElementTypeInput_Button)) {
-
- continue;
- }
-
- if((max - min == 1) || usagePage == kHIDPage_Button || type == kIOHIDElementTypeInput_Button) {
- action = [[JSActionButton alloc] initWithIndex: buttons++ andName: (NSString *)elName];
- [(JSActionButton*)action setMax: max];
- } else if(usage == 0x39)
- action = [[JSActionHat alloc] init];
- else {
- if(usage >= 0x30 && usage < 0x36) {
- action = [[JSActionAnalog alloc] initWithIndex: axes++];
- [(JSActionAnalog*)action setOffset: (double)-1.0];
- [(JSActionAnalog*)action setScale: (double)2.0/(max - min)];
- } else
- continue;
- }
-
- [action setBase: self];
- [action setUsage: usage];
- [action setCookie: IOHIDElementGetCookie(element)];
- [children addObject:action];
- }
+- (id)base {
+ return nil;
}
--(NSString*) stringify {
- return [[NSString alloc] initWithFormat: @"%d~%d~%d", vendorId, productId, index];
+- (NSString *)uid {
+ return [NSString stringWithFormat: @"%d:%d:%d", vendorId, productId, _index];
}
-- (JSAction*) findActionByCookie: (void*) cookie {
- for(int i=0; i<[children count]; i++)
- if([[children objectAtIndex:i]cookie] == cookie)
- return (JSAction*)[children objectAtIndex:i];
- return NULL;
+- (JSAction *)findActionByCookie:(IOHIDElementCookie)cookie {
+ for (JSAction *child in _children)
+ if (child.cookie == cookie)
+ return child;
+ return nil;
}
--(id) handlerForEvent: (IOHIDValueRef) value {
- JSAction* mainAction = [self actionForEvent: value];
- if(!mainAction)
- return NULL;
- return [mainAction findSubActionForValue: value];
+- (JSAction *)handlerForEvent:(IOHIDValueRef)value {
+ JSAction *mainAction = [self actionForEvent:value];
+ return [mainAction findSubActionForValue:value];
}
--(JSAction*) actionForEvent: (IOHIDValueRef) value {
- IOHIDElementRef elt = IOHIDValueGetElement(value);
- void* cookie = IOHIDElementGetCookie(elt);
- return [self findActionByCookie: cookie];
+
+- (JSAction *)actionForEvent:(IOHIDValueRef)value {
+ IOHIDElementRef elt = IOHIDValueGetElement(value);
+ IOHIDElementCookie cookie = IOHIDElementGetCookie(elt);
+ return [self findActionByCookie:cookie];
}
@end
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