97 lines
2.4 KiB
Objective-C
97 lines
2.4 KiB
Objective-C
#import "JOYElement.h"
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#include <IOKit/hid/IOHIDLib.h>
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@implementation JOYElement
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{
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id _element;
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IOHIDDeviceRef _device;
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int32_t _min, _max;
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}
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- (int32_t)min
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{
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return MIN(_min, _max);
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}
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- (int32_t)max
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{
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return MAX(_max, _min);
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}
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-(void)setMin:(int32_t)min
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{
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_min = min;
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}
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- (void)setMax:(int32_t)max
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{
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_max = max;
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}
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- (instancetype)initWithElement:(IOHIDElementRef)element
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{
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if ((self = [super init])) {
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_element = (__bridge id)element;
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_usage = IOHIDElementGetUsage(element);
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_usagePage = IOHIDElementGetUsagePage(element);
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_uniqueID = (uint32_t)IOHIDElementGetCookie(element);
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_min = (int32_t) IOHIDElementGetLogicalMin(element);
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_max = (int32_t) IOHIDElementGetLogicalMax(element);
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_reportID = IOHIDElementGetReportID(element);
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IOHIDElementRef parent = IOHIDElementGetParent(element);
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_parentID = parent? (uint32_t)IOHIDElementGetCookie(parent) : -1;
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_device = IOHIDElementGetDevice(element);
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}
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return self;
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}
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- (int32_t)value
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{
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IOHIDValueRef value = NULL;
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IOHIDDeviceGetValue(_device, (__bridge IOHIDElementRef)_element, &value);
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if (!value) return 0;
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CFRelease(CFRetain(value)); // For some reason, this is required to prevent leaks.
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return (int32_t)IOHIDValueGetIntegerValue(value);
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}
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- (NSData *)dataValue
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{
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IOHIDValueRef value = NULL;
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IOHIDDeviceGetValue(_device, (__bridge IOHIDElementRef)_element, &value);
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if (!value) return 0;
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CFRelease(CFRetain(value)); // For some reason, this is required to prevent leaks.
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return [NSData dataWithBytes:IOHIDValueGetBytePtr(value) length:IOHIDValueGetLength(value)];
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}
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- (void)setValue:(uint32_t)value
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{
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IOHIDValueRef ivalue = IOHIDValueCreateWithIntegerValue(NULL, (__bridge IOHIDElementRef)_element, 0, value);
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IOHIDDeviceSetValue(_device, (__bridge IOHIDElementRef)_element, ivalue);
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CFRelease(ivalue);
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}
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- (void)setDataValue:(NSData *)value
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{
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IOHIDValueRef ivalue = IOHIDValueCreateWithBytes(NULL, (__bridge IOHIDElementRef)_element, 0, value.bytes, value.length);
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IOHIDDeviceSetValue(_device, (__bridge IOHIDElementRef)_element, ivalue);
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CFRelease(ivalue);
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}
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/* For use as a dictionary key */
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- (NSUInteger)hash
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{
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return self.uniqueID;
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}
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- (BOOL)isEqual:(id)object
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{
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return self->_element == object;
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}
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- (id)copyWithZone:(nullable NSZone *)zone;
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{
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return self;
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}
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@end
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