+/*****************************************************************************
+ * AppleRemote.m
+ * AppleRemote
+ * $Id: AppleRemote.m 23523 2007-12-10 00:35:23Z fkuehne $
+ *
+ * Created by Martin Kahr on 11.03.06 under a MIT-style license.
+ * Copyright (c) 2006 martinkahr.com. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ *****************************************************************************
+ *
+ * Note that changes made by any members or contributors of the VideoLAN team
+ * (i.e. changes that were exclusively checked in to one of VideoLAN's source code
+ * repositories) are licensed under the GNU General Public License version 2,
+ * or (at your option) any later version.
+ * Thus, the following statements apply to our changes:
+ *
+ * Copyright (C) 2006-2007 the VideoLAN team
+ * Authors: Eric Petit <titer@m0k.org>
+ * Felix Kühne <fkuehne at videolan dot org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+ *****************************************************************************/
+
+#import "AppleRemote.h"
+
+#define MACOS_VERSION [[[NSDictionary dictionaryWithContentsOfFile: \
+ @"/System/Library/CoreServices/SystemVersion.plist"] \
+ objectForKey: @"ProductVersion"] floatValue]
+
+const char* AppleRemoteDeviceName = "AppleIRController";
+const int REMOTE_SWITCH_COOKIE=19;
+const NSTimeInterval DEFAULT_MAXIMUM_CLICK_TIME_DIFFERENCE=0.35;
+const NSTimeInterval HOLD_RECOGNITION_TIME_INTERVAL=0.4;
+
+@implementation AppleRemote
+
+#pragma public interface
+
+- (id) init {
+ if ( self = [super init] ) {
+ openInExclusiveMode = YES;
+ queue = NULL;
+ hidDeviceInterface = NULL;
+ cookieToButtonMapping = [[NSMutableDictionary alloc] init];
+
+ if( MACOS_VERSION < 10.5f )
+ {
+ /* use the traditional cookies for Tiger (and Panther, if it is supported by the frame app) */
+ [cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonVolume_Plus] forKey:@"14_12_11_6_"];
+ [cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonVolume_Minus] forKey:@"14_13_11_6_"];
+ [cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonMenu] forKey:@"14_7_6_14_7_6_"];
+ [cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonPlay] forKey:@"14_8_6_14_8_6_"];
+ [cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonRight] forKey:@"14_9_6_14_9_6_"];
+ [cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonLeft] forKey:@"14_10_6_14_10_6_"];
+ [cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonRight_Hold] forKey:@"14_6_4_2_"];
+ [cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonLeft_Hold] forKey:@"14_6_3_2_"];
+ [cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonMenu_Hold] forKey:@"14_6_14_6_"];
+ [cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonPlay_Sleep] forKey:@"18_14_6_18_14_6_"];
+ [cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteControl_Switched] forKey:@"19_"];
+ }
+ else
+ {
+ /* we're on Leopard and need to use a new set of cookies */
+ [cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonVolume_Plus] forKey:@"31_29_28_18_"];
+ [cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonVolume_Minus] forKey:@"31_30_28_18_"];
+ [cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonMenu] forKey:@"31_20_18_31_20_18_"];
+ [cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonPlay] forKey:@"31_21_18_31_21_18_"];
+ [cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonRight] forKey:@"31_22_18_31_22_18_"];
+ [cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonLeft] forKey:@"31_23_18_31_23_18_"];
+ [cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonRight_Hold] forKey:@"31_18_4_2_"];
+ [cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonLeft_Hold] forKey:@"31_18_3_2_"];
+ [cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonMenu_Hold] forKey:@"31_18_31_18_"];
+ [cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonPlay_Sleep] forKey:@"35_31_18_35_31_18_"];
+ [cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteControl_Switched] forKey:@"19_"];
+ }
+
+ /* defaults */
+ [self setSimulatesPlusMinusHold: YES];
+ maxClickTimeDifference = DEFAULT_MAXIMUM_CLICK_TIME_DIFFERENCE;
+ }
+
+ return self;
+}
+
+- (void) dealloc {
+ [self stopListening:self];
+ [cookieToButtonMapping release];
+ [super dealloc];
+}
+
+- (int) remoteId {
+ return remoteId;
+}
+
+- (BOOL) isRemoteAvailable {
+ io_object_t hidDevice = [self findAppleRemoteDevice];
+ if (hidDevice != 0) {
+ IOObjectRelease(hidDevice);
+ return YES;
+ } else {
+ return NO;
+ }
+}
+
+- (BOOL) isListeningToRemote {
+ return (hidDeviceInterface != NULL && allCookies != NULL && queue != NULL);
+}
+
+- (void) setListeningToRemote: (BOOL) value {
+ if (value == NO) {
+ [self stopListening:self];
+ } else {
+ [self startListening:self];
+ }
+}
+
+/* Delegates are not retained!
+ * http://developer.apple.com/documentation/Cocoa/Conceptual/CocoaFundamentals/CommunicatingWithObjects/chapter_6_section_4.html
+ * Delegating objects do not (and should not) retain their delegates.
+ * However, clients of delegating objects (applications, usually) are responsible for ensuring that their delegates are around
+ * to receive delegation messages. To do this, they may have to retain the delegate. */
+- (void) setDelegate: (id) _delegate {
+ if (_delegate && [_delegate respondsToSelector:@selector(appleRemoteButton:pressedDown:clickCount:)]==NO) return;
+
+ delegate = _delegate;
+}
+- (id) delegate {
+ return delegate;
+}
+
+- (BOOL) isOpenInExclusiveMode {
+ return openInExclusiveMode;
+}
+- (void) setOpenInExclusiveMode: (BOOL) value {
+ openInExclusiveMode = value;
+}
+
+- (BOOL) clickCountingEnabled {
+ return clickCountEnabledButtons != 0;
+}
+- (void) setClickCountingEnabled: (BOOL) value {
+ if (value) {
+ [self setClickCountEnabledButtons: kRemoteButtonVolume_Plus | kRemoteButtonVolume_Minus | kRemoteButtonPlay | kRemoteButtonLeft | kRemoteButtonRight | kRemoteButtonMenu];
+ } else {
+ [self setClickCountEnabledButtons: 0];
+ }
+}
+
+- (unsigned int) clickCountEnabledButtons {
+ return clickCountEnabledButtons;
+}
+- (void) setClickCountEnabledButtons: (unsigned int)value {
+ clickCountEnabledButtons = value;
+}
+
+- (NSTimeInterval) maximumClickCountTimeDifference {
+ return maxClickTimeDifference;
+}
+- (void) setMaximumClickCountTimeDifference: (NSTimeInterval) timeDiff {
+ maxClickTimeDifference = timeDiff;
+}
+
+- (BOOL) processesBacklog {
+ return processesBacklog;
+}
+- (void) setProcessesBacklog: (BOOL) value {
+ processesBacklog = value;
+}
+
+- (BOOL) listeningOnAppActivate {
+ id appDelegate = [NSApp delegate];
+ return (appDelegate!=nil && [appDelegate isKindOfClass: [AppleRemoteApplicationDelegate class]]);
+}
+- (void) setListeningOnAppActivate: (BOOL) value {
+ if (value) {
+ if ([self listeningOnAppActivate]) return;
+ AppleRemoteApplicationDelegate* appDelegate = [[AppleRemoteApplicationDelegate alloc] initWithApplicationDelegate: [NSApp delegate]];
+ /* NSApp does not retain its delegate therefore we keep retain count on 1 */
+ [NSApp setDelegate: appDelegate];
+ } else {
+ if ([self listeningOnAppActivate]==NO) return;
+ AppleRemoteApplicationDelegate* appDelegate = (AppleRemoteApplicationDelegate*)[NSApp delegate];
+ id previousAppDelegate = [appDelegate applicationDelegate];
+ [NSApp setDelegate: previousAppDelegate];
+ [appDelegate release];
+ }
+}
+
+- (BOOL) simulatesPlusMinusHold {
+ return simulatePlusMinusHold;
+}
+- (void) setSimulatesPlusMinusHold: (BOOL) value {
+ simulatePlusMinusHold = value;
+}
+
+- (IBAction) startListening: (id) sender {
+ if ([self isListeningToRemote]) return;
+
+ io_object_t hidDevice = [self findAppleRemoteDevice];
+ if (hidDevice == 0) return;
+
+ if ([self createInterfaceForDevice:hidDevice] == NULL) {
+ goto error;
+ }
+
+ if ([self initializeCookies]==NO) {
+ goto error;
+ }
+
+ if ([self openDevice]==NO) {
+ goto error;
+ }
+ goto cleanup;
+
+error:
+ [self stopListening:self];
+
+cleanup:
+ IOObjectRelease(hidDevice);
+}
+
+- (IBAction) stopListening: (id) sender {
+ if (queue != NULL) {
+ (*queue)->stop(queue);
+
+ //dispose of queue
+ (*queue)->dispose(queue);
+
+ //release the queue we allocated
+ (*queue)->Release(queue);
+
+ queue = NULL;
+ }
+
+ if (allCookies != nil) {
+ [allCookies autorelease];
+ allCookies = nil;
+ }
+
+ if (hidDeviceInterface != NULL) {
+ //close the device
+ (*hidDeviceInterface)->close(hidDeviceInterface);
+
+ //release the interface
+ (*hidDeviceInterface)->Release(hidDeviceInterface);
+
+ hidDeviceInterface = NULL;
+ }
+}
+
+@end
+
+@implementation AppleRemote (Singleton)
+
+static AppleRemote* sharedInstance=nil;
+
++ (AppleRemote*) sharedRemote {
+ @synchronized(self) {
+ if (sharedInstance == nil) {
+ sharedInstance = [[self alloc] init];
+ }
+ }
+ return sharedInstance;
+}
++ (id)allocWithZone:(NSZone *)zone {
+ @synchronized(self) {
+ if (sharedInstance == nil) {
+ return [super allocWithZone:zone];
+ }
+ }
+ return sharedInstance;
+}
+- (id)copyWithZone:(NSZone *)zone {
+ return self;
+}
+- (id)retain {
+ return self;
+}
+- (unsigned)retainCount {
+ return UINT_MAX; //denotes an object that cannot be released
+}
+- (void)release {
+ //do nothing
+}
+- (id)autorelease {
+ return self;
+}
+
+@end
+
+@implementation AppleRemote (PrivateMethods)
+
+- (void) setRemoteId: (int) value {
+ remoteId = value;
+}
+
+- (IOHIDQueueInterface**) queue {
+ return queue;
+}
+
+- (IOHIDDeviceInterface**) hidDeviceInterface {
+ return hidDeviceInterface;
+}
+
+
+- (NSDictionary*) cookieToButtonMapping {
+ return cookieToButtonMapping;
+}
+
+- (NSString*) validCookieSubstring: (NSString*) cookieString {
+ if (cookieString == nil || [cookieString length] == 0) return nil;
+ NSEnumerator* keyEnum = [[self cookieToButtonMapping] keyEnumerator];
+ NSString* key;
+ while(key = [keyEnum nextObject]) {
+ NSRange range = [cookieString rangeOfString:key];
+ if (range.location == 0) return key;
+ }
+ return nil;
+}
+
+- (void) sendSimulatedPlusMinusEvent: (id) time {
+ BOOL startSimulateHold = NO;
+ AppleRemoteEventIdentifier event = lastPlusMinusEvent;
+ @synchronized(self) {
+ startSimulateHold = (lastPlusMinusEvent>0 && lastPlusMinusEventTime == [time doubleValue]);
+ }
+ if (startSimulateHold) {
+ lastEventSimulatedHold = YES;
+ event = (event==kRemoteButtonVolume_Plus) ? kRemoteButtonVolume_Plus_Hold : kRemoteButtonVolume_Minus_Hold;
+ [delegate appleRemoteButton:event pressedDown: YES clickCount: 1];
+ }
+}
+
+- (void) sendRemoteButtonEvent: (AppleRemoteEventIdentifier) event pressedDown: (BOOL) pressedDown {
+ if (delegate) {
+ if (simulatePlusMinusHold) {
+ if (event == kRemoteButtonVolume_Plus || event == kRemoteButtonVolume_Minus) {
+ if (pressedDown) {
+ lastPlusMinusEvent = event;
+ lastPlusMinusEventTime = [NSDate timeIntervalSinceReferenceDate];
+ [self performSelector:@selector(sendSimulatedPlusMinusEvent:)
+ withObject:[NSNumber numberWithDouble:lastPlusMinusEventTime]
+ afterDelay:HOLD_RECOGNITION_TIME_INTERVAL];
+ return;
+ } else {
+ if (lastEventSimulatedHold) {
+ event = (event==kRemoteButtonVolume_Plus) ? kRemoteButtonVolume_Plus_Hold : kRemoteButtonVolume_Minus_Hold;
+ lastPlusMinusEvent = 0;
+ lastEventSimulatedHold = NO;
+ } else {
+ @synchronized(self) {
+ lastPlusMinusEvent = 0;
+ }
+ pressedDown = YES;
+ }
+ }
+ }
+ }
+
+ if (([self clickCountEnabledButtons] & event) == event) {
+ if (pressedDown==NO && (event == kRemoteButtonVolume_Minus || event == kRemoteButtonVolume_Plus)) {
+ return; // this one is triggered automatically by the handler
+ }
+ NSNumber* eventNumber;
+ NSNumber* timeNumber;
+ @synchronized(self) {
+ lastClickCountEventTime = [NSDate timeIntervalSinceReferenceDate];
+ if (lastClickCountEvent == event) {
+ eventClickCount = eventClickCount + 1;
+ } else {
+ eventClickCount = 1;
+ }
+ lastClickCountEvent = event;
+ timeNumber = [NSNumber numberWithDouble:lastClickCountEventTime];
+ eventNumber= [NSNumber numberWithUnsignedInt:event];
+ }
+ [self performSelector: @selector(executeClickCountEvent:)
+ withObject: [NSArray arrayWithObjects:eventNumber, timeNumber, nil]
+ afterDelay: maxClickTimeDifference];
+ } else {
+ [delegate appleRemoteButton:event pressedDown: pressedDown clickCount:1];
+ }
+ }
+}
+
+- (void) executeClickCountEvent: (NSArray*) values {
+ AppleRemoteEventIdentifier event = [[values objectAtIndex: 0] unsignedIntValue];
+ NSTimeInterval eventTimePoint = [[values objectAtIndex: 1] doubleValue];
+
+ BOOL finishedClicking = NO;
+ int finalClickCount = eventClickCount;
+
+ @synchronized(self) {
+ finishedClicking = (event != lastClickCountEvent || eventTimePoint == lastClickCountEventTime);
+ if (finishedClicking) eventClickCount = 0;
+ }
+
+ if (finishedClicking) {
+ [delegate appleRemoteButton:event pressedDown: YES clickCount:finalClickCount];
+ if ([self simulatesPlusMinusHold]==NO && (event == kRemoteButtonVolume_Minus || event == kRemoteButtonVolume_Plus)) {
+ // trigger a button release event, too
+ [NSThread sleepUntilDate: [NSDate dateWithTimeIntervalSinceNow:0.1]];
+ [delegate appleRemoteButton:event pressedDown: NO clickCount:finalClickCount];
+ }
+ }
+
+}
+
+- (void) handleEventWithCookieString: (NSString*) cookieString sumOfValues: (SInt32) sumOfValues {
+ /*
+ if (previousRemainingCookieString) {
+ cookieString = [previousRemainingCookieString stringByAppendingString: cookieString];
+ NSLog(@"New cookie string is %@", cookieString);
+ [previousRemainingCookieString release], previousRemainingCookieString=nil;
+ }*/
+ if (cookieString == nil || [cookieString length] == 0) return;
+ NSNumber* buttonId = [[self cookieToButtonMapping] objectForKey: cookieString];
+ if (buttonId != nil) {
+ [self sendRemoteButtonEvent: [buttonId intValue] pressedDown: (sumOfValues>0)];
+ } else {
+ // let's see if a number of events are stored in the cookie string. this does
+ // happen when the main thread is too busy to handle all incoming events in time.
+ NSString* subCookieString;
+ NSString* lastSubCookieString=nil;
+ while(subCookieString = [self validCookieSubstring: cookieString]) {
+ cookieString = [cookieString substringFromIndex: [subCookieString length]];
+ lastSubCookieString = subCookieString;
+ if (processesBacklog) [self handleEventWithCookieString: subCookieString sumOfValues:sumOfValues];
+ }
+ if (processesBacklog == NO && lastSubCookieString != nil) {
+ // process the last event of the backlog and assume that the button is not pressed down any longer.
+ // The events in the backlog do not seem to be in order and therefore (in rare cases) the last event might be
+ // a button pressed down event while in reality the user has released it.
+ // NSLog(@"processing last event of backlog");
+ [self handleEventWithCookieString: lastSubCookieString sumOfValues:0];
+ }
+ if ([cookieString length] > 0) {
+ NSLog(@"Unknown button for cookiestring %@", cookieString);
+ }
+ }
+}
+
+@end
+
+/* Callback method for the device queue
+Will be called for any event of any type (cookie) to which we subscribe
+*/
+static void QueueCallbackFunction(void* target, IOReturn result, void* refcon, void* sender) {
+ AppleRemote* remote = (AppleRemote*)target;
+
+ IOHIDEventStruct event;
+ AbsoluteTime zeroTime = {0,0};
+ NSMutableString* cookieString = [NSMutableString string];
+ SInt32 sumOfValues = 0;
+ while (result == kIOReturnSuccess)
+ {
+ result = (*[remote queue])->getNextEvent([remote queue], &event, zeroTime, 0);
+ if ( result != kIOReturnSuccess )
+ continue;
+
+ //printf("%d %d %d\n", event.elementCookie, event.value, event.longValue);
+
+ if (REMOTE_SWITCH_COOKIE == (int)event.elementCookie) {
+ [remote setRemoteId: event.value];
+ [remote handleEventWithCookieString: @"19_" sumOfValues: 0];
+ } else {
+ if (((int)event.elementCookie)!=5) {
+ sumOfValues+=event.value;
+ [cookieString appendString:[NSString stringWithFormat:@"%d_", event.elementCookie]];
+ }
+ }
+ }
+
+ [remote handleEventWithCookieString: cookieString sumOfValues: sumOfValues];
+}
+
+@implementation AppleRemote (IOKitMethods)
+
+- (IOHIDDeviceInterface**) createInterfaceForDevice: (io_object_t) hidDevice {
+ io_name_t className;
+ IOCFPlugInInterface** plugInInterface = NULL;
+ HRESULT plugInResult = S_OK;
+ SInt32 score = 0;
+ IOReturn ioReturnValue = kIOReturnSuccess;
+
+ hidDeviceInterface = NULL;
+
+ ioReturnValue = IOObjectGetClass(hidDevice, className);
+
+ if (ioReturnValue != kIOReturnSuccess) {
+ NSLog(@"Error: Failed to get class name.");
+ return NULL;
+ }
+
+ ioReturnValue = IOCreatePlugInInterfaceForService(hidDevice,
+ kIOHIDDeviceUserClientTypeID,
+ kIOCFPlugInInterfaceID,
+ &plugInInterface,
+ &score);
+ if (ioReturnValue == kIOReturnSuccess)
+ {
+ //Call a method of the intermediate plug-in to create the device interface
+ plugInResult = (*plugInInterface)->QueryInterface(plugInInterface, CFUUIDGetUUIDBytes(kIOHIDDeviceInterfaceID), (LPVOID) &hidDeviceInterface);
+
+ if (plugInResult != S_OK) {
+ NSLog(@"Error: Couldn't create HID class device interface");
+ }
+ // Release
+ if (plugInInterface) (*plugInInterface)->Release(plugInInterface);
+ }
+ return hidDeviceInterface;
+}
+
+- (io_object_t) findAppleRemoteDevice {
+ CFMutableDictionaryRef hidMatchDictionary = NULL;
+ IOReturn ioReturnValue = kIOReturnSuccess;
+ io_iterator_t hidObjectIterator = 0;
+ io_object_t hidDevice = 0;
+
+ // Set up a matching dictionary to search the I/O Registry by class
+ // name for all HID class devices
+ hidMatchDictionary = IOServiceMatching(AppleRemoteDeviceName);
+
+ // Now search I/O Registry for matching devices.
+ ioReturnValue = IOServiceGetMatchingServices(kIOMasterPortDefault, hidMatchDictionary, &hidObjectIterator);
+
+ if ((ioReturnValue == kIOReturnSuccess) && (hidObjectIterator != 0)) {
+ hidDevice = IOIteratorNext(hidObjectIterator);
+ }
+
+ // release the iterator
+ IOObjectRelease(hidObjectIterator);
+
+ return hidDevice;
+}
+
+- (BOOL) initializeCookies {
+ IOHIDDeviceInterface122** handle = (IOHIDDeviceInterface122**)hidDeviceInterface;
+ IOHIDElementCookie cookie;
+ long usage;
+ long usagePage;
+ id object;
+ NSArray* elements = nil;
+ NSDictionary* element;
+ IOReturn success;
+
+ if (!handle || !(*handle)) return NO;
+
+ /* Copy all elements, since we're grabbing most of the elements
+ * for this device anyway, and thus, it's faster to iterate them
+ * ourselves. When grabbing only one or two elements, a matching
+ * dictionary should be passed in here instead of NULL. */
+ success = (*handle)->copyMatchingElements(handle, NULL, (CFArrayRef*)&elements);
+
+ if (success == kIOReturnSuccess) {
+
+ [elements autorelease];
+ /*
+ cookies = calloc(NUMBER_OF_APPLE_REMOTE_ACTIONS, sizeof(IOHIDElementCookie));
+ memset(cookies, 0, sizeof(IOHIDElementCookie) * NUMBER_OF_APPLE_REMOTE_ACTIONS);
+ */
+ allCookies = [[NSMutableArray alloc] init];
+ int i;
+ for (i=0; i< [elements count]; i++) {
+ element = [elements objectAtIndex:i];
+
+ //Get cookie
+ object = [element valueForKey: (NSString*)CFSTR(kIOHIDElementCookieKey) ];
+ if (object == nil || ![object isKindOfClass:[NSNumber class]]) continue;
+ if (object == 0 || CFGetTypeID(object) != CFNumberGetTypeID()) continue;
+ cookie = (IOHIDElementCookie) [object longValue];
+
+ //Get usage
+ object = [element valueForKey: (NSString*)CFSTR(kIOHIDElementUsageKey) ];
+ if (object == nil || ![object isKindOfClass:[NSNumber class]]) continue;
+ usage = [object longValue];
+
+ //Get usage page
+ object = [element valueForKey: (NSString*)CFSTR(kIOHIDElementUsagePageKey) ];
+ if (object == nil || ![object isKindOfClass:[NSNumber class]]) continue;
+ usagePage = [object longValue];
+
+ [allCookies addObject: [NSNumber numberWithInt:(int)cookie]];
+ }
+ } else {
+ return NO;
+ }
+
+ return YES;
+}
+
+- (BOOL) openDevice {
+ HRESULT result;
+
+ IOHIDOptionsType openMode = kIOHIDOptionsTypeNone;
+ if ([self isOpenInExclusiveMode]) openMode = kIOHIDOptionsTypeSeizeDevice;
+ IOReturn ioReturnValue = (*hidDeviceInterface)->open(hidDeviceInterface, openMode);
+
+ if (ioReturnValue == KERN_SUCCESS) {
+ queue = (*hidDeviceInterface)->allocQueue(hidDeviceInterface);
+ if (queue) {
+ result = (*queue)->create(queue, 0, 12); //depth: maximum number of elements in queue before oldest elements in queue begin to be lost.
+
+ int i=0;
+ for(i=0; i<[allCookies count]; i++) {
+ IOHIDElementCookie cookie = (IOHIDElementCookie)[[allCookies objectAtIndex:i] intValue];
+ (*queue)->addElement(queue, cookie, 0);
+ }
+
+ // add callback for async events
+ CFRunLoopSourceRef eventSource;
+ ioReturnValue = (*queue)->createAsyncEventSource(queue, &eventSource);
+ if (ioReturnValue == KERN_SUCCESS) {
+ ioReturnValue = (*queue)->setEventCallout(queue,QueueCallbackFunction, self, NULL);
+ if (ioReturnValue == KERN_SUCCESS) {
+ CFRunLoopAddSource(CFRunLoopGetCurrent(), eventSource, kCFRunLoopDefaultMode);
+ //start data delivery to queue
+ (*queue)->start(queue);
+ return YES;
+ } else {
+ NSLog(@"Error when setting event callout");
+ }
+ } else {
+ NSLog(@"Error when creating async event source");
+ }
+ } else {
+ NSLog(@"Error when opening device");
+ }
+ }
+ return NO;
+}
+
+@end
+
+@implementation AppleRemoteApplicationDelegate
+
+- (id) initWithApplicationDelegate: (id) delegate {
+ if (self = [super init]) {
+ applicationDelegate = [delegate retain];
+ }
+ return self;
+}
+
+- (void) dealloc {
+ [applicationDelegate release];
+ [super dealloc];
+}
+
+- (id) applicationDelegate {
+ return applicationDelegate;
+}
+
+- (void)applicationWillBecomeActive:(NSNotification *)aNotification {
+ if ([applicationDelegate respondsToSelector: @selector(applicationWillBecomeActive:)]) {
+ [applicationDelegate applicationWillBecomeActive: aNotification];
+ }
+}
+- (void)applicationDidBecomeActive:(NSNotification *)aNotification {
+ [[AppleRemote sharedRemote] setListeningToRemote: YES];
+
+ if ([applicationDelegate respondsToSelector: @selector(applicationDidBecomeActive:)]) {
+ [applicationDelegate applicationDidBecomeActive: aNotification];
+ }
+}
+- (void)applicationWillResignActive:(NSNotification *)aNotification {
+ [[AppleRemote sharedRemote] setListeningToRemote: NO];
+
+ if ([applicationDelegate respondsToSelector: @selector(applicationWillResignActive:)]) {
+ [applicationDelegate applicationWillResignActive: aNotification];
+ }
+}
+- (void)applicationDidResignActive:(NSNotification *)aNotification {
+ if ([applicationDelegate respondsToSelector: @selector(applicationDidResignActive:)]) {
+ [applicationDelegate applicationDidResignActive: aNotification];
+ }
+}
+
+- (NSMethodSignature *)methodSignatureForSelector:(SEL)aSelector {
+ NSMethodSignature* signature = [super methodSignatureForSelector: aSelector];
+ if (signature == nil && applicationDelegate != nil) {
+ signature = [applicationDelegate methodSignatureForSelector: aSelector];
+ }
+ return signature;
+}
+
+- (void)forwardInvocation:(NSInvocation *)invocation {
+ SEL aSelector = [invocation selector];
+
+ if (applicationDelegate==nil || [applicationDelegate respondsToSelector:aSelector]==NO) {
+ [super forwardInvocation: invocation];
+ return;
+ }
+
+ [invocation invokeWithTarget:applicationDelegate];
+}
+@end