git.sesse.net Git - vlc/blob - modules/gui/macosx/AppleRemote.m

   1 /*****************************************************************************
   2  * AppleRemote.m
   3  * AppleRemote
   4  * $Id$
   5  *
   6  * Created by Martin Kahr on 11.03.06 under a MIT-style license.
   7  * Copyright (c) 2006 martinkahr.com. All rights reserved.
   8  *
   9  * Permission is hereby granted, free of charge, to any person obtaining a
  10  * copy of this software and associated documentation files (the "Software"),
  11  * to deal in the Software without restriction, including without limitation
  12  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  13  * and/or sell copies of the Software, and to permit persons to whom the
  14  * Software is furnished to do so, subject to the following conditions:
  15  *
  16  * The above copyright notice and this permission notice shall be included
  17  * in all copies or substantial portions of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  20  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  22  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  23  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  24  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  25  * THE SOFTWARE.
  26  *
  27  *****************************************************************************
  28  *
  29  * Note that changes made by any members or contributors of the VideoLAN team
  30  * (i.e. changes that were exclusively checked in to one of VideoLAN's source code
  31  * repositories) are licensed under the GNU General Public License version 2,
  32  * or (at your option) any later version.
  33  * Thus, the following statements apply to our changes:
  34  *
  35  * Copyright (C) 2006-2009 the VideoLAN team
  36  * Authors: Eric Petit <titer@m0k.org>
  37  *          Felix Kühne <fkuehne at videolan dot org>
  38  *
  39  * This program is free software; you can redistribute it and/or modify
  40  * it under the terms of the GNU General Public License as published by
  41  * the Free Software Foundation; either version 2 of the License, or
  42  * (at your option) any later version.
  43  *
  44  * This program is distributed in the hope that it will be useful,
  45  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  46  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  47  * GNU General Public License for more details.
  48  *
  49  * You should have received a copy of the GNU General Public License
  50  * along with this program; if not, write to the Free Software
  51  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  52  *****************************************************************************/
  53
  54 #import "AppleRemote.h"
  55
  56 /* this was added by the VideoLAN team to ensure Leopard-compatibility and is VLC-only */
  57 #import "intf.h"
  58
  59 const char* AppleRemoteDeviceName = "AppleIRController";
  60 const int REMOTE_SWITCH_COOKIE=19;
  61 const NSTimeInterval DEFAULT_MAXIMUM_CLICK_TIME_DIFFERENCE=0.35;
  62 const NSTimeInterval HOLD_RECOGNITION_TIME_INTERVAL=0.4;
  63
  64 @implementation AppleRemote
  65
  66 #pragma public interface
  67
  68 - (id) init {
  69     if(( self = [super init])) {
  70         openInExclusiveMode = YES;
  71         queue = NULL;
  72         hidDeviceInterface = NULL;
  73         cookieToButtonMapping = [[NSMutableDictionary alloc] init];
  74
  75         if( NSAppKitVersionNumber < 1038.13 )
  76         {
  77             /* Leopard and early Snow Leopard Cookies */
  78             msg_Dbg( VLCIntf, "using Leopard AR cookies" );
  79             [cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonVolume_Plus]  forKey:@"31_29_28_18_"];
  80             [cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonVolume_Minus] forKey:@"31_30_28_18_"];
  81             [cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonMenu]         forKey:@"31_20_18_31_20_18_"];
  82             [cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonPlay]         forKey:@"31_21_18_31_21_18_"];
  83             [cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonRight]        forKey:@"31_22_18_31_22_18_"];
  84             [cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonLeft]         forKey:@"31_23_18_31_23_18_"];
  85             [cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonRight_Hold]   forKey:@"31_18_4_2_"];
  86             [cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonLeft_Hold]    forKey:@"31_18_3_2_"];
  87             [cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonMenu_Hold]    forKey:@"31_18_31_18_"];
  88             [cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonPlay_Sleep]   forKey:@"35_31_18_35_31_18_"];
  89             [cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteControl_Switched]   forKey:@"19_"];
  90         }
  91         else
  92         {
  93             /* current Snow Leopard cookies */
  94             msg_Dbg( VLCIntf, "using Snow Leopard AR cookies" );
  95             [cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonVolume_Plus]    forKey:@"33_31_30_21_20_2_"];
  96             [cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonVolume_Minus]   forKey:@"33_32_30_21_20_2_"];
  97             [cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonMenu]           forKey:@"33_22_21_20_2_33_22_21_20_2_"];
  98             [cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonPlay]           forKey:@"33_23_21_20_2_33_23_21_20_2_"];
  99             [cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonRight]          forKey:@"33_24_21_20_2_33_24_21_20_2_"];
 100             [cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonLeft]           forKey:@"33_25_21_20_2_33_25_21_20_2_"];
 101             [cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonRight_Hold]     forKey:@"33_21_20_14_12_2_"];
 102             [cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonLeft_Hold]      forKey:@"33_21_20_13_12_2_"];
 103             [cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonMenu_Hold]      forKey:@"33_21_20_2_33_21_20_2_"];
 104             [cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonPlay_Sleep]     forKey:@"37_33_21_20_2_37_33_21_20_2_"];
 105             [cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteControl_Switched]     forKey:@"19_"];
 106             [cookieToButtonMapping setObject:[NSNumber numberWithInt:k2009RemoteButtonPlay]       forKey:@"33_21_20_8_2_33_21_20_8_2_"];
 107             [cookieToButtonMapping setObject:[NSNumber numberWithInt:k2009RemoteButtonMiddlePlay] forKey:@"33_21_20_3_2_33_21_20_3_2_"];
 108         }
 109     }
 110
 111     /* defaults */
 112     [self setSimulatesPlusMinusHold: YES];
 113     maxClickTimeDifference = DEFAULT_MAXIMUM_CLICK_TIME_DIFFERENCE;
 114
 115     return self;
 116 }
 117
 118 - (void) dealloc {
 119     [self stopListening:self];
 120     [cookieToButtonMapping release];
 121     [super dealloc];
 122 }
 123
 124 - (int) remoteId {
 125     return remoteId;
 126 }
 127
 128 - (BOOL) isRemoteAvailable {
 129     io_object_t hidDevice = [self findAppleRemoteDevice];
 130     if (hidDevice != 0) {
 131         IOObjectRelease(hidDevice);
 132         return YES;
 133     } else {
 134         return NO;
 135     }
 136 }
 137
 138 - (BOOL) isListeningToRemote {
 139     return (hidDeviceInterface != NULL && allCookies != NULL && queue != NULL);
 140 }
 141
 142 - (void) setListeningToRemote: (BOOL) value {
 143     if (value == NO) {
 144         [self stopListening:self];
 145     } else {
 146         [self startListening:self];
 147     }
 148 }
 149
 150 /* Delegates are not retained!
 151  * http://developer.apple.com/documentation/Cocoa/Conceptual/CocoaFundamentals/CommunicatingWithObjects/chapter_6_section_4.html
 152  * Delegating objects do not (and should not) retain their delegates.
 153  * However, clients of delegating objects (applications, usually) are responsible for ensuring that their delegates are around
 154  * to receive delegation messages. To do this, they may have to retain the delegate. */
 155 - (void) setDelegate: (id) _delegate {
 156     if (_delegate && [_delegate respondsToSelector:@selector(appleRemoteButton:pressedDown:clickCount:)]==NO) return;
 157
 158     delegate = _delegate;
 159 }
 160 - (id) delegate {
 161     return delegate;
 162 }
 163
 164 - (BOOL) isOpenInExclusiveMode {
 165     return openInExclusiveMode;
 166 }
 167 - (void) setOpenInExclusiveMode: (BOOL) value {
 168     openInExclusiveMode = value;
 169 }
 170
 171 - (BOOL) clickCountingEnabled {
 172     return clickCountEnabledButtons != 0;
 173 }
 174 - (void) setClickCountingEnabled: (BOOL) value {
 175     if (value) {
 176         [self setClickCountEnabledButtons: kRemoteButtonVolume_Plus | kRemoteButtonVolume_Minus | kRemoteButtonPlay | kRemoteButtonLeft | kRemoteButtonRight | kRemoteButtonMenu | k2009RemoteButtonPlay | k2009RemoteButtonMiddlePlay];
 177     } else {
 178         [self setClickCountEnabledButtons: 0];
 179     }
 180 }
 181
 182 - (unsigned int) clickCountEnabledButtons {
 183     return clickCountEnabledButtons;
 184 }
 185 - (void) setClickCountEnabledButtons: (unsigned int)value {
 186     clickCountEnabledButtons = value;
 187 }
 188
 189 - (NSTimeInterval) maximumClickCountTimeDifference {
 190     return maxClickTimeDifference;
 191 }
 192 - (void) setMaximumClickCountTimeDifference: (NSTimeInterval) timeDiff {
 193     maxClickTimeDifference = timeDiff;
 194 }
 195
 196 - (BOOL) processesBacklog {
 197     return processesBacklog;
 198 }
 199 - (void) setProcessesBacklog: (BOOL) value {
 200     processesBacklog = value;
 201 }
 202
 203 - (BOOL) listeningOnAppActivate {
 204     id appDelegate = [NSApp delegate];
 205     return (appDelegate!=nil && [appDelegate isKindOfClass: [AppleRemoteApplicationDelegate class]]);
 206 }
 207 - (void) setListeningOnAppActivate: (BOOL) value {
 208     if (value) {
 209         if ([self listeningOnAppActivate]) return;
 210         AppleRemoteApplicationDelegate* appDelegate = [[AppleRemoteApplicationDelegate alloc] initWithApplicationDelegate: [NSApp delegate]];
 211         /* NSApp does not retain its delegate therefore we keep retain count on 1 */
 212         [NSApp setDelegate: appDelegate];
 213     } else {
 214         if ([self listeningOnAppActivate]==NO) return;
 215         AppleRemoteApplicationDelegate* appDelegate = (AppleRemoteApplicationDelegate*)[NSApp delegate];
 216         id previousAppDelegate = [appDelegate applicationDelegate];
 217         [NSApp setDelegate: previousAppDelegate];
 218         [appDelegate release];
 219     }
 220 }
 221
 222 - (BOOL) simulatesPlusMinusHold {
 223     return simulatePlusMinusHold;
 224 }
 225 - (void) setSimulatesPlusMinusHold: (BOOL) value {
 226     simulatePlusMinusHold = value;
 227 }
 228
 229 - (IBAction) startListening: (id) sender {
 230     if ([self isListeningToRemote]) return;
 231
 232     io_object_t hidDevice = [self findAppleRemoteDevice];
 233     if (hidDevice == 0) return;
 234
 235     if ([self createInterfaceForDevice:hidDevice] == NULL) {
 236         goto error;
 237     }
 238
 239     if ([self initializeCookies]==NO) {
 240         goto error;
 241     }
 242
 243     if ([self openDevice]==NO) {
 244         goto error;
 245     }
 246     goto cleanup;
 247
 248 error:
 249     [self stopListening:self];
 250
 251 cleanup:
 252     IOObjectRelease(hidDevice);
 253 }
 254
 255 - (IBAction) stopListening: (id) sender {
 256     if (eventSource != NULL) {
 257         CFRunLoopRemoveSource(CFRunLoopGetCurrent(), eventSource, kCFRunLoopDefaultMode);
 258         CFRelease(eventSource);
 259         eventSource = NULL;
 260     }
 261     if (queue != NULL) {
 262         (*queue)->stop(queue);
 263
 264         //dispose of queue
 265         (*queue)->dispose(queue);
 266
 267         //release the queue we allocated
 268         (*queue)->Release(queue);
 269
 270         queue = NULL;
 271     }
 272
 273     if (allCookies != nil) {
 274         [allCookies autorelease];
 275         allCookies = nil;
 276     }
 277
 278     if (hidDeviceInterface != NULL) {
 279         //close the device
 280         (*hidDeviceInterface)->close(hidDeviceInterface);
 281
 282         //release the interface
 283         (*hidDeviceInterface)->Release(hidDeviceInterface);
 284
 285         hidDeviceInterface = NULL;
 286     }
 287 }
 288
 289 @end
 290
 291 @implementation AppleRemote (Singleton)
 292
 293 static AppleRemote* sharedInstance=nil;
 294
 295 + (AppleRemote*) sharedRemote {
 296     @synchronized(self) {
 297         if (sharedInstance == nil) {
 298             sharedInstance = [[self alloc] init];
 299         }
 300     }
 301     return sharedInstance;
 302 }
 303 + (id)allocWithZone:(NSZone *)zone {
 304     @synchronized(self) {
 305         if (sharedInstance == nil) {
 306             return [super allocWithZone:zone];
 307         }
 308     }
 309     return sharedInstance;
 310 }
 311 - (id)copyWithZone:(NSZone *)zone {
 312     return self;
 313 }
 314 - (id)retain {
 315     return self;
 316 }
 317 - (NSUInteger)retainCount {
 318     return UINT_MAX;  //denotes an object that cannot be released
 319 }
 320 - (void)release {
 321     //do nothing
 322 }
 323 - (id)autorelease {
 324     return self;
 325 }
 326
 327 @end
 328
 329 @implementation AppleRemote (PrivateMethods)
 330
 331 - (void) setRemoteId: (int) value {
 332     remoteId = value;
 333 }
 334
 335 - (IOHIDQueueInterface**) queue {
 336     return queue;
 337 }
 338
 339 - (IOHIDDeviceInterface**) hidDeviceInterface {
 340     return hidDeviceInterface;
 341 }
 342
 343
 344 - (NSDictionary*) cookieToButtonMapping {
 345     return cookieToButtonMapping;
 346 }
 347
 348 - (NSString*) validCookieSubstring: (NSString*) cookieString {
 349     if (cookieString == nil || [cookieString length] == 0) return nil;
 350     NSEnumerator* keyEnum = [[self cookieToButtonMapping] keyEnumerator];
 351     NSString* key;
 352     while((key = [keyEnum nextObject])) {
 353         NSRange range = [cookieString rangeOfString:key];
 354         if (range.location == 0) return key;
 355     }
 356     return nil;
 357 }
 358
 359 - (void) sendSimulatedPlusMinusEvent: (id) time {
 360     BOOL startSimulateHold = NO;
 361     AppleRemoteEventIdentifier event = lastPlusMinusEvent;
 362     @synchronized(self) {
 363         startSimulateHold = (lastPlusMinusEvent>0 && lastPlusMinusEventTime == [time doubleValue]);
 364     }
 365     if (startSimulateHold) {
 366         lastEventSimulatedHold = YES;
 367         event = (event==kRemoteButtonVolume_Plus) ? kRemoteButtonVolume_Plus_Hold : kRemoteButtonVolume_Minus_Hold;
 368         [delegate appleRemoteButton:event pressedDown: YES clickCount: 1];
 369     }
 370 }
 371
 372 - (void) sendRemoteButtonEvent: (AppleRemoteEventIdentifier) event pressedDown: (BOOL) pressedDown {
 373     if (delegate) {
 374         if (simulatePlusMinusHold) {
 375             if (event == kRemoteButtonVolume_Plus || event == kRemoteButtonVolume_Minus) {
 376                 if (pressedDown) {
 377                     lastPlusMinusEvent = event;
 378                     lastPlusMinusEventTime = [NSDate timeIntervalSinceReferenceDate];
 379                     [self performSelector:@selector(sendSimulatedPlusMinusEvent:)
 380                                withObject:[NSNumber numberWithDouble:lastPlusMinusEventTime]
 381                                afterDelay:HOLD_RECOGNITION_TIME_INTERVAL];
 382                     return;
 383                 } else {
 384                     if (lastEventSimulatedHold) {
 385                         event = (event==kRemoteButtonVolume_Plus) ? kRemoteButtonVolume_Plus_Hold : kRemoteButtonVolume_Minus_Hold;
 386                         lastPlusMinusEvent = 0;
 387                         lastEventSimulatedHold = NO;
 388                     } else {
 389                         @synchronized(self) {
 390                             lastPlusMinusEvent = 0;
 391                         }
 392                         pressedDown = YES;
 393                     }
 394                 }
 395             }
 396         }
 397
 398         if (([self clickCountEnabledButtons] & event) == event) {
 399             if (pressedDown==NO && (event == kRemoteButtonVolume_Minus || event == kRemoteButtonVolume_Plus)) {
 400                 return; // this one is triggered automatically by the handler
 401             }
 402             NSNumber* eventNumber;
 403             NSNumber* timeNumber;
 404             @synchronized(self) {
 405                 lastClickCountEventTime = [NSDate timeIntervalSinceReferenceDate];
 406                 if (lastClickCountEvent == event) {
 407                     eventClickCount = eventClickCount + 1;
 408                 } else {
 409                     eventClickCount = 1;
 410                 }
 411                 lastClickCountEvent = event;
 412                 timeNumber = [NSNumber numberWithDouble:lastClickCountEventTime];
 413                 eventNumber= [NSNumber numberWithUnsignedInt:event];
 414             }
 415             [self performSelector: @selector(executeClickCountEvent:)
 416                        withObject: [NSArray arrayWithObjects:eventNumber, timeNumber, nil]
 417                        afterDelay: maxClickTimeDifference];
 418         } else {
 419             [delegate appleRemoteButton:event pressedDown: pressedDown clickCount:1];
 420         }
 421     }
 422 }
 423
 424 - (void) executeClickCountEvent: (NSArray*) values {
 425     AppleRemoteEventIdentifier event = [[values objectAtIndex: 0] unsignedIntValue];
 426     NSTimeInterval eventTimePoint = [[values objectAtIndex: 1] doubleValue];
 427
 428     BOOL finishedClicking = NO;
 429     int finalClickCount = eventClickCount;
 430
 431     @synchronized(self) {
 432         finishedClicking = (event != lastClickCountEvent || eventTimePoint == lastClickCountEventTime);
 433         if (finishedClicking) eventClickCount = 0;
 434     }
 435
 436     if (finishedClicking) {
 437         [delegate appleRemoteButton:event pressedDown: YES clickCount:finalClickCount];
 438         if ([self simulatesPlusMinusHold]==NO && (event == kRemoteButtonVolume_Minus || event == kRemoteButtonVolume_Plus)) {
 439             // trigger a button release event, too
 440             [NSThread sleepUntilDate: [NSDate dateWithTimeIntervalSinceNow:0.1]];
 441             [delegate appleRemoteButton:event pressedDown: NO clickCount:finalClickCount];
 442         }
 443     }
 444
 445 }
 446
 447 - (void) handleEventWithCookieString: (NSString*) cookieString sumOfValues: (SInt32) sumOfValues {
 448     /*
 449     if (previousRemainingCookieString) {
 450         cookieString = [previousRemainingCookieString stringByAppendingString: cookieString];
 451         NSLog(@"New cookie string is %@", cookieString);
 452         [previousRemainingCookieString release], previousRemainingCookieString=nil;
 453         }*/
 454     if (cookieString == nil || [cookieString length] == 0) return;
 455     NSNumber* buttonId = [[self cookieToButtonMapping] objectForKey: cookieString];
 456     if (buttonId != nil) {
 457         switch ([buttonId intValue]) {
 458             case k2009RemoteButtonPlay:
 459             case k2009RemoteButtonMiddlePlay:
 460                 buttonId = [NSNumber numberWithInt:kRemoteButtonPlay];
 461                 break;
 462             default:
 463                 break;
 464                 }
 465         [self sendRemoteButtonEvent: [buttonId intValue] pressedDown: (sumOfValues>0)];
 466     } else {
 467         // let's see if a number of events are stored in the cookie string. this does
 468         // happen when the main thread is too busy to handle all incoming events in time.
 469         NSString* subCookieString;
 470         NSString* lastSubCookieString=nil;
 471         while((subCookieString = [self validCookieSubstring: cookieString])) {
 472             cookieString = [cookieString substringFromIndex: [subCookieString length]];
 473             lastSubCookieString = subCookieString;
 474             if (processesBacklog) [self handleEventWithCookieString: subCookieString sumOfValues:sumOfValues];
 475         }
 476         if (processesBacklog == NO && lastSubCookieString != nil) {
 477             // process the last event of the backlog and assume that the button is not pressed down any longer.
 478             // The events in the backlog do not seem to be in order and therefore (in rare cases) the last event might be
 479             // a button pressed down event while in reality the user has released it.
 480             // NSLog(@"processing last event of backlog");
 481             [self handleEventWithCookieString: lastSubCookieString sumOfValues:0];
 482         }
 483         if ([cookieString length] > 0) {
 484             msg_Warn( VLCIntf, "Unknown AR button for cookiestring %s", [cookieString UTF8String]);
 485         }
 486     }
 487 }
 488
 489 @end
 490
 491 /*  Callback method for the device queue
 492 Will be called for any event of any type (cookie) to which we subscribe
 493 */
 494 static void QueueCallbackFunction(void* target,  IOReturn result, void* refcon, void* sender) {
 495     AppleRemote* remote = (AppleRemote*)target;
 496
 497     IOHIDEventStruct event;
 498     AbsoluteTime     zeroTime = {0,0};
 499     NSMutableString* cookieString = [NSMutableString string];
 500     SInt32           sumOfValues = 0;
 501     while (result == kIOReturnSuccess)
 502     {
 503         result = (*[remote queue])->getNextEvent([remote queue], &event, zeroTime, 0);
 504         if ( result != kIOReturnSuccess )
 505             continue;
 506
 507         //printf("%d %d %d\n", event.elementCookie, event.value, event.longValue);
 508
 509         if (REMOTE_SWITCH_COOKIE == (int)event.elementCookie) {
 510             [remote setRemoteId: event.value];
 511             [remote handleEventWithCookieString: @"19_" sumOfValues: 0];
 512         } else {
 513             if (((int)event.elementCookie)!=5) {
 514                 sumOfValues+=event.value;
 515                 [cookieString appendString:[NSString stringWithFormat:@"%d_", event.elementCookie]];
 516             }
 517         }
 518     }
 519
 520     [remote handleEventWithCookieString: cookieString sumOfValues: sumOfValues];
 521 }
 522
 523 @implementation AppleRemote (IOKitMethods)
 524
 525 - (IOHIDDeviceInterface**) createInterfaceForDevice: (io_object_t) hidDevice {
 526     io_name_t               className;
 527     IOCFPlugInInterface**   plugInInterface = NULL;
 528     HRESULT                 plugInResult = S_OK;
 529     SInt32                  score = 0;
 530     IOReturn                ioReturnValue = kIOReturnSuccess;
 531
 532     hidDeviceInterface = NULL;
 533
 534     ioReturnValue = IOObjectGetClass(hidDevice, className);
 535
 536     if (ioReturnValue != kIOReturnSuccess) {
 537         msg_Err( VLCIntf, "Failed to get IOKit class name.");
 538         return NULL;
 539     }
 540
 541     ioReturnValue = IOCreatePlugInInterfaceForService(hidDevice,
 542                                                       kIOHIDDeviceUserClientTypeID,
 543                                                       kIOCFPlugInInterfaceID,
 544                                                       &plugInInterface,
 545                                                       &score);
 546     if (ioReturnValue == kIOReturnSuccess)
 547     {
 548         //Call a method of the intermediate plug-in to create the device interface
 549         plugInResult = (*plugInInterface)->QueryInterface(plugInInterface, CFUUIDGetUUIDBytes(kIOHIDDeviceInterfaceID), (LPVOID) &hidDeviceInterface);
 550
 551         if (plugInResult != S_OK) {
 552             msg_Err( VLCIntf, "Couldn't create HID class device interface");
 553         }
 554         // Release
 555         if (plugInInterface) (*plugInInterface)->Release(plugInInterface);
 556     }
 557     return hidDeviceInterface;
 558 }
 559
 560 - (io_object_t) findAppleRemoteDevice {
 561     CFMutableDictionaryRef hidMatchDictionary = NULL;
 562     IOReturn ioReturnValue = kIOReturnSuccess;
 563     io_iterator_t hidObjectIterator = 0;
 564     io_object_t hidDevice = 0;
 565
 566     // Set up a matching dictionary to search the I/O Registry by class
 567     // name for all HID class devices
 568     hidMatchDictionary = IOServiceMatching(AppleRemoteDeviceName);
 569
 570     // Now search I/O Registry for matching devices.
 571     ioReturnValue = IOServiceGetMatchingServices(kIOMasterPortDefault, hidMatchDictionary, &hidObjectIterator);
 572
 573     if ((ioReturnValue == kIOReturnSuccess) && (hidObjectIterator != 0)) {
 574         hidDevice = IOIteratorNext(hidObjectIterator);
 575     }
 576
 577     // release the iterator
 578     IOObjectRelease(hidObjectIterator);
 579
 580     return hidDevice;
 581 }
 582
 583 - (BOOL) initializeCookies {
 584     IOHIDDeviceInterface122** handle = (IOHIDDeviceInterface122**)hidDeviceInterface;
 585     IOHIDElementCookie      cookie;
 586     long                    usage;
 587     long                    usagePage;
 588     id                      object;
 589     NSArray*                elements = nil;
 590     NSDictionary*           element;
 591     IOReturn success;
 592
 593     if (!handle || !(*handle)) return NO;
 594
 595     /* Copy all elements, since we're grabbing most of the elements
 596      * for this device anyway, and thus, it's faster to iterate them
 597      * ourselves. When grabbing only one or two elements, a matching
 598      * dictionary should be passed in here instead of NULL. */
 599     success = (*handle)->copyMatchingElements(handle, NULL, (CFArrayRef*)&elements);
 600
 601     if (success == kIOReturnSuccess) {
 602
 603         [elements autorelease];
 604         /*
 605         cookies = calloc(NUMBER_OF_APPLE_REMOTE_ACTIONS, sizeof(IOHIDElementCookie));
 606         memset(cookies, 0, sizeof(IOHIDElementCookie) * NUMBER_OF_APPLE_REMOTE_ACTIONS);
 607         */
 608         allCookies = [[NSMutableArray alloc] init];
 609         unsigned int i;
 610         for (i=0; i< [elements count]; i++) {
 611             element = [elements objectAtIndex:i];
 612
 613             //Get cookie
 614             object = [element valueForKey: (NSString*)CFSTR(kIOHIDElementCookieKey) ];
 615             if (object == nil || ![object isKindOfClass:[NSNumber class]]) continue;
 616             if (object == 0 || CFGetTypeID(object) != CFNumberGetTypeID()) continue;
 617             cookie = (IOHIDElementCookie) [object longValue];
 618
 619             //Get usage
 620             object = [element valueForKey: (NSString*)CFSTR(kIOHIDElementUsageKey) ];
 621             if (object == nil || ![object isKindOfClass:[NSNumber class]]) continue;
 622             usage = [object longValue];
 623
 624             //Get usage page
 625             object = [element valueForKey: (NSString*)CFSTR(kIOHIDElementUsagePageKey) ];
 626             if (object == nil || ![object isKindOfClass:[NSNumber class]]) continue;
 627             usagePage = [object longValue];
 628
 629             [allCookies addObject: [NSNumber numberWithInt:(int)cookie]];
 630         }
 631     } else {
 632         return NO;
 633     }
 634
 635     return YES;
 636 }
 637
 638 - (BOOL) openDevice {
 639     HRESULT  result;
 640
 641     IOHIDOptionsType openMode = kIOHIDOptionsTypeNone;
 642     if ([self isOpenInExclusiveMode]) openMode = kIOHIDOptionsTypeSeizeDevice;
 643     IOReturn ioReturnValue = (*hidDeviceInterface)->open(hidDeviceInterface, openMode);
 644
 645     if (ioReturnValue == KERN_SUCCESS) {
 646         queue = (*hidDeviceInterface)->allocQueue(hidDeviceInterface);
 647         if (queue) {
 648             result = (*queue)->create(queue, 0, 12);    //depth: maximum number of elements in queue before oldest elements in queue begin to be lost.
 649
 650             unsigned int i=0;
 651             for(i=0; i<[allCookies count]; i++) {
 652                 IOHIDElementCookie cookie = (IOHIDElementCookie)[[allCookies objectAtIndex:i] intValue];
 653                 (*queue)->addElement(queue, cookie, 0);
 654             }
 655
 656             // add callback for async events
 657             ioReturnValue = (*queue)->createAsyncEventSource(queue, &eventSource);
 658             if (ioReturnValue == KERN_SUCCESS) {
 659                 ioReturnValue = (*queue)->setEventCallout(queue,QueueCallbackFunction, self, NULL);
 660                 if (ioReturnValue == KERN_SUCCESS) {
 661                     CFRunLoopAddSource(CFRunLoopGetCurrent(), eventSource, kCFRunLoopDefaultMode);
 662                     //start data delivery to queue
 663                     (*queue)->start(queue);
 664                     return YES;
 665                 } else {
 666                     msg_Err( VLCIntf, "Error when setting event callout");
 667                 }
 668             } else {
 669                 msg_Err( VLCIntf, "Error when creating async event source");
 670             }
 671         } else {
 672             msg_Err( VLCIntf, "Error when opening HUD device");
 673         }
 674     }
 675     return NO;
 676 }
 677
 678 @end
 679
 680 @implementation AppleRemoteApplicationDelegate
 681
 682 - (id) initWithApplicationDelegate: (id) delegate {
 683     if((self = [super init]))
 684         applicationDelegate = [delegate retain];
 685     return self;
 686 }
 687
 688 - (void) dealloc {
 689     [applicationDelegate release];
 690     [super dealloc];
 691 }
 692
 693 - (id) applicationDelegate {
 694     return applicationDelegate;
 695 }
 696
 697 - (void)applicationWillBecomeActive:(NSNotification *)aNotification {
 698     if ([applicationDelegate respondsToSelector: @selector(applicationWillBecomeActive:)]) {
 699         [applicationDelegate applicationWillBecomeActive: aNotification];
 700     }
 701 }
 702 - (void)applicationDidBecomeActive:(NSNotification *)aNotification {
 703     [[AppleRemote sharedRemote] setListeningToRemote: YES];
 704
 705     if ([applicationDelegate respondsToSelector: @selector(applicationDidBecomeActive:)]) {
 706         [applicationDelegate applicationDidBecomeActive: aNotification];
 707     }
 708 }
 709 - (void)applicationWillResignActive:(NSNotification *)aNotification {
 710     [[AppleRemote sharedRemote] setListeningToRemote: NO];
 711
 712     if ([applicationDelegate respondsToSelector: @selector(applicationWillResignActive:)]) {
 713         [applicationDelegate applicationWillResignActive: aNotification];
 714     }
 715 }
 716 - (void)applicationDidResignActive:(NSNotification *)aNotification {
 717     if ([applicationDelegate respondsToSelector: @selector(applicationDidResignActive:)]) {
 718         [applicationDelegate applicationDidResignActive: aNotification];
 719     }
 720 }
 721
 722 - (NSMethodSignature *)methodSignatureForSelector:(SEL)aSelector {
 723     NSMethodSignature* signature = [super methodSignatureForSelector: aSelector];
 724     if (signature == nil && applicationDelegate != nil) {
 725         signature = [applicationDelegate methodSignatureForSelector: aSelector];
 726     }
 727     return signature;
 728 }
 729
 730 - (void)forwardInvocation:(NSInvocation *)invocation {
 731     SEL aSelector = [invocation selector];
 732
 733     if (applicationDelegate==nil || [applicationDelegate respondsToSelector:aSelector]==NO) {
 734         [super forwardInvocation: invocation];
 735         return;
 736     }
 737
 738     [invocation invokeWithTarget:applicationDelegate];
 739 }
 740 @end