Removed unused files.
vspader
parent
a2f360177e
commit
9a30701f80
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@ -1,199 +0,0 @@
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/*****************************************************************************
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* AppleRemote.h
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* AppleRemote
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* $Id: AppleRemote.h 18683 2007-02-02 09:12:37Z fkuehne $
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*
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* Created by Martin Kahr on 11.03.06 under a MIT-style license.
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* Copyright (c) 2006 martinkahr.com. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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*****************************************************************************
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*
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* Note that changes made by any members or contributors of the VideoLAN team
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* (i.e. changes that were checked in exclusively into one of VideoLAN's source code
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* repositories) are licensed under the GNU General Public License version 2,
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* or (at your option) any later version.
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* Thus, the following statements apply to our changes:
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*
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* Copyright (C) 2006-2007 the VideoLAN team
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* Authors: Eric Petit <titer@m0k.org>
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* Felix Kühne <fkuehne at videolan dot org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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*****************************************************************************/
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#import <Cocoa/Cocoa.h>
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#import <mach/mach.h>
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#import <mach/mach_error.h>
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#import <IOKit/IOKitLib.h>
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#import <IOKit/IOCFPlugIn.h>
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#import <IOKit/hid/IOHIDLib.h>
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#import <IOKit/hid/IOHIDKeys.h>
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enum AppleRemoteEventIdentifier
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{
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kRemoteButtonVolume_Plus =1<<1,
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kRemoteButtonVolume_Minus =1<<2,
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kRemoteButtonMenu =1<<3,
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kRemoteButtonPlay =1<<4,
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kRemoteButtonRight =1<<5,
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kRemoteButtonLeft =1<<6,
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kRemoteButtonRight_Hold =1<<7,
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kRemoteButtonLeft_Hold =1<<8,
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kRemoteButtonMenu_Hold =1<<9,
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kRemoteButtonPlay_Sleep =1<<10,
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kRemoteControl_Switched =1<<11,
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kRemoteButtonVolume_Plus_Hold =1<<12,
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kRemoteButtonVolume_Minus_Hold =1<<13
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};
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typedef enum AppleRemoteEventIdentifier AppleRemoteEventIdentifier;
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/* Encapsulates usage of the apple remote control
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This class is implemented as a singleton as there is exactly one remote per machine (until now)
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The class is not thread safe
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*/
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@interface AppleRemote : NSObject {
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IOHIDDeviceInterface** hidDeviceInterface;
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IOHIDQueueInterface** queue;
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NSMutableArray* allCookies;
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NSMutableDictionary* cookieToButtonMapping;
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BOOL openInExclusiveMode;
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BOOL simulatePlusMinusHold;
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BOOL processesBacklog;
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/* state for simulating plus/minus hold */
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BOOL lastEventSimulatedHold;
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AppleRemoteEventIdentifier lastPlusMinusEvent;
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NSTimeInterval lastPlusMinusEventTime;
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int remoteId;
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unsigned int clickCountEnabledButtons;
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NSTimeInterval maxClickTimeDifference;
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NSTimeInterval lastClickCountEventTime;
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AppleRemoteEventIdentifier lastClickCountEvent;
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unsigned int eventClickCount;
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IBOutlet id delegate;
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}
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- (int) remoteId;
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- (BOOL) isRemoteAvailable;
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- (BOOL) isListeningToRemote;
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- (void) setListeningToRemote: (BOOL) value;
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- (BOOL) isOpenInExclusiveMode;
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- (void) setOpenInExclusiveMode: (BOOL) value;
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/* click counting makes it possible to recognize if the user has pressed a button repeatedly
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* click counting does delay each event as it has to wait if there is another event (second click)
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* therefore there is a slight time difference (maximumClickCountTimeDifference) between a single click
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* of the user and the call of your delegate method
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* click counting can be enabled individually for specific buttons. Use the property clickCountEnableButtons
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* to set the buttons for which click counting shall be enabled */
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- (BOOL) clickCountingEnabled;
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- (void) setClickCountingEnabled: (BOOL) value;
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- (unsigned int) clickCountEnabledButtons;
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- (void) setClickCountEnabledButtons: (unsigned int)value;
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/* the maximum time difference till which clicks are recognized as multi clicks */
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- (NSTimeInterval) maximumClickCountTimeDifference;
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- (void) setMaximumClickCountTimeDifference: (NSTimeInterval) timeDiff;
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/* When your application needs to much time on the main thread when processing an event other events
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* may already be received which are put on a backlog. As soon as your main thread
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* has some spare time this backlog is processed and may flood your delegate with calls.
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* Backlog processing is turned off by default. */
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- (BOOL) processesBacklog;
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- (void) setProcessesBacklog: (BOOL) value;
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/* Sets an NSApplication delegate which starts listening when application is becoming active
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* and stops listening when application resigns being active.
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* If an NSApplication delegate has been already set all method calls will be forwarded to this delegate, too. */
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- (BOOL) listeningOnAppActivate;
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- (void) setListeningOnAppActivate: (BOOL) value;
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/* Simulating plus/minus hold does deactivate sending of individual requests for plus/minus pressed down/released.
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* Instead special hold events are being triggered when the user is pressing and holding plus/minus for a small period.
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* With simulating enabled the plus/minus buttons do behave as the left/right buttons */
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- (BOOL) simulatesPlusMinusHold;
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- (void) setSimulatesPlusMinusHold: (BOOL) value;
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/* Delegates are not retained */
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- (void) setDelegate: (id) delegate;
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- (id) delegate;
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- (IBAction) startListening: (id) sender;
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- (IBAction) stopListening: (id) sender;
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@end
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@interface AppleRemote (Singleton)
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+ (AppleRemote*) sharedRemote;
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@end
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/* Method definitions for the delegate of the AppleRemote class */
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@interface NSObject(NSAppleRemoteDelegate)
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- (void) appleRemoteButton: (AppleRemoteEventIdentifier)buttonIdentifier pressedDown: (BOOL) pressedDown clickCount: (unsigned int) count;
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@end
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@interface AppleRemote (PrivateMethods)
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- (void) setRemoteId: (int) aValue;
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- (NSDictionary*) cookieToButtonMapping;
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- (IOHIDQueueInterface**) queue;
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- (IOHIDDeviceInterface**) hidDeviceInterface;
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- (void) handleEventWithCookieString: (NSString*) cookieString sumOfValues: (SInt32) sumOfValues;
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@end
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@interface AppleRemote (IOKitMethods)
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- (io_object_t) findAppleRemoteDevice;
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- (IOHIDDeviceInterface**) createInterfaceForDevice: (io_object_t) hidDevice;
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- (BOOL) initializeCookies;
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- (BOOL) openDevice;
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@end
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/* A NSApplication delegate which is used to activate and deactivate listening to the remote control
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* dependent on the activation state of your application.
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* All events are delegated to the original NSApplication delegate if necessary */
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@interface AppleRemoteApplicationDelegate : NSObject {
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id applicationDelegate;
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}
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- (id) initWithApplicationDelegate: (id) delegate;
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- (id) applicationDelegate;
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@end
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@ -1,713 +0,0 @@
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/*****************************************************************************
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* AppleRemote.m
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* AppleRemote
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* $Id: AppleRemote.m 18683 2007-02-02 09:12:37Z fkuehne $
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*
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* Created by Martin Kahr on 11.03.06 under a MIT-style license.
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* Copyright (c) 2006 martinkahr.com. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
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* and/or sell copies of the Software, and to permit persons to whom the
|
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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*****************************************************************************
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*
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* Note that changes made by any members or contributors of the VideoLAN team
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* (i.e. changes that were exclusively checked in to one of VideoLAN's source code
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* repositories) are licensed under the GNU General Public License version 2,
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* or (at your option) any later version.
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* Thus, the following statements apply to our changes:
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*
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* Copyright (C) 2006-2007 the VideoLAN team
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* Authors: Eric Petit <titer@m0k.org>
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* Felix Kühne <fkuehne at videolan dot org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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*****************************************************************************/
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#import "AppleRemote.h"
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const char* AppleRemoteDeviceName = "AppleIRController";
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const int REMOTE_SWITCH_COOKIE=19;
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const NSTimeInterval DEFAULT_MAXIMUM_CLICK_TIME_DIFFERENCE=0.35;
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const NSTimeInterval HOLD_RECOGNITION_TIME_INTERVAL=0.4;
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@implementation AppleRemote
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#pragma public interface
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- (id) init {
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if ( self = [super init] ) {
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openInExclusiveMode = YES;
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queue = NULL;
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hidDeviceInterface = NULL;
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cookieToButtonMapping = [[NSMutableDictionary alloc] init];
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[cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonVolume_Plus] forKey:@"14_12_11_6_"];
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[cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonVolume_Minus] forKey:@"14_13_11_6_"];
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[cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonMenu] forKey:@"14_7_6_14_7_6_"];
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[cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonPlay] forKey:@"14_8_6_14_8_6_"];
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[cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonRight] forKey:@"14_9_6_14_9_6_"];
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[cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonLeft] forKey:@"14_10_6_14_10_6_"];
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[cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonRight_Hold] forKey:@"14_6_4_2_"];
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[cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonLeft_Hold] forKey:@"14_6_3_2_"];
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[cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonMenu_Hold] forKey:@"14_6_14_6_"];
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[cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonPlay_Sleep] forKey:@"18_14_6_18_14_6_"];
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[cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteControl_Switched] forKey:@"19_"];
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/* defaults */
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[self setSimulatesPlusMinusHold: YES];
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maxClickTimeDifference = DEFAULT_MAXIMUM_CLICK_TIME_DIFFERENCE;
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}
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return self;
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}
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- (void) dealloc {
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[self stopListening:self];
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[cookieToButtonMapping release];
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[super dealloc];
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}
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/* this was added by the VideoLAN team to ensure Leopard-compatibility and is VLC-only */
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#if GC_ENABLED
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- (void)finalize
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{
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[self stopListening: self];
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[super finalize];
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}
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#endif
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- (int) remoteId {
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return remoteId;
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}
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- (BOOL) isRemoteAvailable {
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io_object_t hidDevice = [self findAppleRemoteDevice];
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if (hidDevice != 0) {
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IOObjectRelease(hidDevice);
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return YES;
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} else {
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return NO;
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}
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}
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- (BOOL) isListeningToRemote {
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return (hidDeviceInterface != NULL && allCookies != NULL && queue != NULL);
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}
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- (void) setListeningToRemote: (BOOL) value {
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if (value == NO) {
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[self stopListening:self];
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} else {
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[self startListening:self];
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}
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}
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/* Delegates are not retained!
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* http://developer.apple.com/documentation/Cocoa/Conceptual/CocoaFundamentals/CommunicatingWithObjects/chapter_6_section_4.html
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* Delegating objects do not (and should not) retain their delegates.
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* However, clients of delegating objects (applications, usually) are responsible for ensuring that their delegates are around
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* to receive delegation messages. To do this, they may have to retain the delegate. */
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- (void) setDelegate: (id) _delegate {
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if (_delegate && [_delegate respondsToSelector:@selector(appleRemoteButton:pressedDown:clickCount:)]==NO) return;
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delegate = _delegate;
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}
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- (id) delegate {
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return delegate;
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}
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- (BOOL) isOpenInExclusiveMode {
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return openInExclusiveMode;
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}
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- (void) setOpenInExclusiveMode: (BOOL) value {
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openInExclusiveMode = value;
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}
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- (BOOL) clickCountingEnabled {
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return clickCountEnabledButtons != 0;
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}
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- (void) setClickCountingEnabled: (BOOL) value {
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if (value) {
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[self setClickCountEnabledButtons: kRemoteButtonVolume_Plus | kRemoteButtonVolume_Minus | kRemoteButtonPlay | kRemoteButtonLeft | kRemoteButtonRight | kRemoteButtonMenu];
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} else {
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[self setClickCountEnabledButtons: 0];
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}
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}
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- (unsigned int) clickCountEnabledButtons {
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return clickCountEnabledButtons;
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}
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- (void) setClickCountEnabledButtons: (unsigned int)value {
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clickCountEnabledButtons = value;
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}
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- (NSTimeInterval) maximumClickCountTimeDifference {
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return maxClickTimeDifference;
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}
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- (void) setMaximumClickCountTimeDifference: (NSTimeInterval) timeDiff {
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maxClickTimeDifference = timeDiff;
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}
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- (BOOL) processesBacklog {
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return processesBacklog;
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}
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- (void) setProcessesBacklog: (BOOL) value {
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processesBacklog = value;
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}
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- (BOOL) listeningOnAppActivate {
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id appDelegate = [NSApp delegate];
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return (appDelegate!=nil && [appDelegate isKindOfClass: [AppleRemoteApplicationDelegate class]]);
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}
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- (void) setListeningOnAppActivate: (BOOL) value {
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if (value) {
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if ([self listeningOnAppActivate]) return;
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AppleRemoteApplicationDelegate* appDelegate = [[AppleRemoteApplicationDelegate alloc] initWithApplicationDelegate: [NSApp delegate]];
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/* NSApp does not retain its delegate therefore we keep retain count on 1 */
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[NSApp setDelegate: appDelegate];
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} else {
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if ([self listeningOnAppActivate]==NO) return;
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AppleRemoteApplicationDelegate* appDelegate = (AppleRemoteApplicationDelegate*)[NSApp delegate];
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id previousAppDelegate = [appDelegate applicationDelegate];
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[NSApp setDelegate: previousAppDelegate];
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[appDelegate release];
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}
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}
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- (BOOL) simulatesPlusMinusHold {
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return simulatePlusMinusHold;
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}
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- (void) setSimulatesPlusMinusHold: (BOOL) value {
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simulatePlusMinusHold = value;
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}
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- (IBAction) startListening: (id) sender {
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if ([self isListeningToRemote]) return;
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io_object_t hidDevice = [self findAppleRemoteDevice];
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if (hidDevice == 0) return;
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if ([self createInterfaceForDevice:hidDevice] == NULL) {
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goto error;
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}
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if ([self initializeCookies]==NO) {
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goto error;
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}
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if ([self openDevice]==NO) {
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goto error;
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}
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goto cleanup;
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error:
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[self stopListening:self];
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cleanup:
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IOObjectRelease(hidDevice);
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}
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- (IBAction) stopListening: (id) sender {
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if (queue != NULL) {
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(*queue)->stop(queue);
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//dispose of queue
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(*queue)->dispose(queue);
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//release the queue we allocated
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(*queue)->Release(queue);
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queue = NULL;
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}
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if (allCookies != nil) {
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[allCookies autorelease];
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allCookies = nil;
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}
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if (hidDeviceInterface != NULL) {
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//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 {
|
||||
NSLog(@"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
|
||||
|
|
@ -1,24 +0,0 @@
|
|||
/*
|
||||
* $Id$
|
||||
*
|
||||
* Copyright (C) 2006 Stephen F. Booth <me@sbooth.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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
*/
|
||||
|
||||
#import <Cocoa/Cocoa.h>
|
||||
|
||||
// Return an array of valid audio file extensions recognized by Core Audio
|
||||
NSArray * getCoreAudioExtensions();
|
||||
|
|
@ -1,49 +0,0 @@
|
|||
/*
|
||||
* $Id$
|
||||
*
|
||||
* Copyright (C) 2006 Stephen F. Booth <me@sbooth.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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
*/
|
||||
|
||||
#include "CoreAudioUtils.h"
|
||||
|
||||
#include <AudioToolbox/AudioFile.h>
|
||||
|
||||
// CoreAudio utility function
|
||||
static NSArray *sAudioExtensions = nil;
|
||||
|
||||
// Return an array of valid audio file extensions recognized by Core Audio
|
||||
NSArray *
|
||||
getCoreAudioExtensions()
|
||||
{
|
||||
OSStatus err;
|
||||
UInt32 size;
|
||||
|
||||
@synchronized(sAudioExtensions) {
|
||||
if(nil == sAudioExtensions) {
|
||||
size = sizeof(sAudioExtensions);
|
||||
err = AudioFileGetGlobalInfo(kAudioFileGlobalInfo_AllExtensions, 0, NULL, &size, &sAudioExtensions);
|
||||
if(noErr != err) {
|
||||
return nil;
|
||||
}
|
||||
|
||||
[sAudioExtensions retain];
|
||||
}
|
||||
}
|
||||
|
||||
return sAudioExtensions;
|
||||
}
|
||||
|
||||
|
|
@ -1,21 +0,0 @@
|
|||
//
|
||||
// Semaphore.h
|
||||
// Cog
|
||||
//
|
||||
// Created by Vincent Spader on 8/2/05.
|
||||
// Copyright 2005 Vincent Spader. All rights reserved.
|
||||
//
|
||||
|
||||
#import <Cocoa/Cocoa.h>
|
||||
#import <mach/mach.h>
|
||||
|
||||
@interface Semaphore : NSObject {
|
||||
semaphore_t semaphore;
|
||||
}
|
||||
|
||||
-(id)init;
|
||||
-(void)signal;
|
||||
-(void)timedWait:(int)seconds;
|
||||
-(void)wait;
|
||||
|
||||
@end
|
||||
|
|
@ -1,43 +0,0 @@
|
|||
//
|
||||
// Semaphore.m
|
||||
// Cog
|
||||
//
|
||||
// Created by Vincent Spader on 8/2/05.
|
||||
// Copyright 2005 Vincent Spader. All rights reserved.
|
||||
//
|
||||
|
||||
#import "Semaphore.h"
|
||||
|
||||
|
||||
@implementation Semaphore
|
||||
|
||||
-(id)init
|
||||
{
|
||||
self = [super init];
|
||||
if (self)
|
||||
{
|
||||
semaphore_create(mach_task_self(), &semaphore, SYNC_POLICY_FIFO, 0);
|
||||
}
|
||||
|
||||
return self;
|
||||
}
|
||||
|
||||
-(void)signal
|
||||
{
|
||||
semaphore_signal_all(semaphore);
|
||||
}
|
||||
|
||||
-(void)timedWait:(int)seconds
|
||||
{
|
||||
mach_timespec_t timeout = {seconds, 0};
|
||||
|
||||
semaphore_timedwait(semaphore, timeout);
|
||||
}
|
||||
|
||||
-(void)wait
|
||||
{
|
||||
mach_timespec_t t = {2.0, 0.0}; //2 second timeout
|
||||
semaphore_timedwait(semaphore, t);
|
||||
}
|
||||
|
||||
@end
|
||||
|
|
@ -1,88 +0,0 @@
|
|||
//
|
||||
// VirtualRingBuffer.h
|
||||
// PlayBufferedSoundFile
|
||||
//
|
||||
/*
|
||||
Copyright (c) 2002, Kurt Revis. All rights reserved.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
|
||||
|
||||
* Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
|
||||
* Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
|
||||
* Neither the name of Snoize nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
|
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
//
|
||||
// VirtualRingBuffer implements a classic ring buffer (or circular buffer), with a couple of twists.
|
||||
//
|
||||
// * It allows reads and writes to happen in different threads, with no explicit locking,
|
||||
// so readers and writers will never block. This is useful if either thread uses the
|
||||
// time-constraint scheduling policy, since it is bad for such threads to block for
|
||||
// indefinite amounts of time.
|
||||
//
|
||||
// * It uses a virtual memory trick to allow the client to read or write using just one
|
||||
// operation, even if the data involved wraps around the end of the buffer. We allocate
|
||||
// our buffer normally, and then place a VM region immediately after it in the address
|
||||
// space which maps back to the "real" buffer. So reads and writes into both sections
|
||||
// are transparently translated into the same physical memory.
|
||||
// This makes the API much simpler to use, and saves us from doing some math to
|
||||
// calculate the wraparound points.
|
||||
// The tradeoff is that we use twice as much address space for the buffer than we would
|
||||
// otherwise. Address space is not typically constrained for most applications, though,
|
||||
// so this isn't a big problem.
|
||||
// The idea for this trick came from <http://phil.ipal.org/freeware/vrb/> (via sweetcode.org),
|
||||
// although none of that code is used here. (We use the Mach VM API directly.)
|
||||
//
|
||||
|
||||
// Threading note:
|
||||
// It is expected that this object will be shared between exactly two threads; one will
|
||||
// always read and the other will always write. In that situation, the implementation is
|
||||
// thread-safe, and this object will never block or yield.
|
||||
// It will also work in one thread, of course (although I don't know why you'd bother).
|
||||
// However, if you have multiple reader or writer threads, all bets are off!
|
||||
|
||||
#import <Foundation/Foundation.h>
|
||||
|
||||
|
||||
@interface VirtualRingBuffer : NSObject
|
||||
{
|
||||
void *buffer;
|
||||
void *bufferEnd;
|
||||
UInt32 bufferLength;
|
||||
// buffer is the start of the ring buffer's address space.
|
||||
// bufferEnd is the end of the "real" buffer (always buffer + bufferLength).
|
||||
// Note that the "virtual" portion of the buffer extends from bufferEnd to bufferEnd+bufferLength.
|
||||
|
||||
void *readPointer;
|
||||
void *writePointer;
|
||||
}
|
||||
|
||||
- (id)initWithLength:(UInt32)length;
|
||||
// Note: The specified length will be rounded up to an integral number of VM pages.
|
||||
|
||||
// Empties the buffer. It is NOT safe to do this while anyone is reading from or writing to the buffer.
|
||||
- (void)empty;
|
||||
// Checks if the buffer is empty or not. This is safe in any thread.
|
||||
- (BOOL)isEmpty;
|
||||
|
||||
- (UInt32)bufferLength;
|
||||
|
||||
// Read operations:
|
||||
|
||||
// The reading thread must call this method first.
|
||||
- (UInt32)lengthAvailableToReadReturningPointer:(void **)returnedReadPointer;
|
||||
// Iff a value > 0 is returned, the reading thread may go on to read that much data from the returned pointer.
|
||||
// Afterwards, the reading thread must call didReadLength:.
|
||||
- (void)didReadLength:(UInt32)length;
|
||||
|
||||
// Write operations:
|
||||
|
||||
// The writing thread must call this method first.
|
||||
- (UInt32)lengthAvailableToWriteReturningPointer:(void **)returnedWritePointer;
|
||||
// Iff a value > 0 is returned, the writing thread may then write that much data into the returned pointer.
|
||||
// Afterwards, the writing thread must call didWriteLength:.
|
||||
- (void)didWriteLength:(UInt32)length;
|
||||
|
||||
@end
|
||||
|
|
@ -1,309 +0,0 @@
|
|||
//
|
||||
// VirtualRingBuffer.m
|
||||
// PlayBufferedSoundFile
|
||||
//
|
||||
/*
|
||||
Copyright (c) 2002, Kurt Revis. All rights reserved.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
|
||||
|
||||
* Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
|
||||
* Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
|
||||
* Neither the name of Snoize nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
|
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
|
||||
#import "VirtualRingBuffer.h"
|
||||
|
||||
#include <mach/mach.h>
|
||||
#include <mach/mach_error.h>
|
||||
|
||||
|
||||
@implementation VirtualRingBuffer
|
||||
|
||||
static void *allocateVirtualBuffer(UInt32 bufferLength);
|
||||
static void deallocateVirtualBuffer(void *buffer, UInt32 bufferLength);
|
||||
|
||||
|
||||
- (id)initWithLength:(UInt32)length
|
||||
{
|
||||
if (![super init])
|
||||
return nil;
|
||||
|
||||
// We need to allocate entire VM pages, so round the specified length up to the next page if necessary.
|
||||
bufferLength = round_page(length);
|
||||
|
||||
buffer = allocateVirtualBuffer(bufferLength);
|
||||
if (buffer) {
|
||||
bufferEnd = buffer + bufferLength;
|
||||
} else {
|
||||
[self release];
|
||||
return nil;
|
||||
}
|
||||
|
||||
readPointer = NULL;
|
||||
writePointer = NULL;
|
||||
|
||||
return self;
|
||||
}
|
||||
|
||||
- (void)dealloc
|
||||
{
|
||||
if (buffer)
|
||||
deallocateVirtualBuffer(buffer, bufferLength);
|
||||
|
||||
[super dealloc];
|
||||
}
|
||||
|
||||
- (void)empty
|
||||
{
|
||||
// Assumption:
|
||||
// No one is reading or writing from the buffer, in any thread, when this method is called.
|
||||
|
||||
readPointer = NULL;
|
||||
writePointer = NULL;
|
||||
}
|
||||
|
||||
- (BOOL)isEmpty
|
||||
{
|
||||
return (readPointer != NULL && writePointer != NULL);
|
||||
}
|
||||
|
||||
|
||||
- (UInt32)bufferLength
|
||||
{
|
||||
return bufferLength;
|
||||
}
|
||||
|
||||
//
|
||||
// Theory of operation:
|
||||
//
|
||||
// This class keeps a pointer to the next byte to be read (readPointer) and a pointer to the next byte to be written (writePointer).
|
||||
// readPointer is only advanced in the reading thread (except for one case: when the buffer first has data written to it).
|
||||
// writePointer is only advanced in the writing thread.
|
||||
//
|
||||
// Since loading and storing word length data is atomic, each pointer can safely be modified in one thread while the other thread
|
||||
// uses it, IF each thread is careful to make a local copy of the "opposite" pointer when necessary.
|
||||
//
|
||||
|
||||
//
|
||||
// Read operations
|
||||
//
|
||||
|
||||
- (UInt32)lengthAvailableToReadReturningPointer:(void **)returnedReadPointer
|
||||
{
|
||||
// Assumptions:
|
||||
// returnedReadPointer != NULL
|
||||
|
||||
UInt32 length;
|
||||
// Read this pointer exactly once, so we're safe in case it is changed in another thread
|
||||
void *localWritePointer = writePointer;
|
||||
|
||||
// Depending on out-of-order execution and memory storage, either one of these may be NULL when the buffer is empty. So we must check both.
|
||||
if (!readPointer || !localWritePointer) {
|
||||
// The buffer is empty
|
||||
length = 0;
|
||||
} else if (localWritePointer > readPointer) {
|
||||
// Write is ahead of read in the buffer
|
||||
length = localWritePointer - readPointer;
|
||||
} else {
|
||||
// Write has wrapped around past read, OR write == read (the buffer is full)
|
||||
length = bufferLength - (readPointer - localWritePointer);
|
||||
}
|
||||
|
||||
*returnedReadPointer = readPointer;
|
||||
return length;
|
||||
}
|
||||
|
||||
- (void)didReadLength:(UInt32)length
|
||||
{
|
||||
// Assumptions:
|
||||
// [self lengthAvailableToReadReturningPointer:] currently returns a value >= length
|
||||
// length > 0
|
||||
|
||||
void *newReadPointer;
|
||||
|
||||
newReadPointer = readPointer + length;
|
||||
if (newReadPointer >= bufferEnd)
|
||||
newReadPointer -= bufferLength;
|
||||
|
||||
if (newReadPointer == writePointer) {
|
||||
// We just read the last data out of the buffer, so it is now empty.
|
||||
newReadPointer = NULL;
|
||||
}
|
||||
|
||||
// Store the new read pointer. This is the only place this happens in the read thread.
|
||||
readPointer = newReadPointer;
|
||||
}
|
||||
|
||||
|
||||
//
|
||||
// Write operations
|
||||
//
|
||||
|
||||
- (UInt32)lengthAvailableToWriteReturningPointer:(void **)returnedWritePointer
|
||||
{
|
||||
// Assumptions:
|
||||
// returnedWritePointer != NULL
|
||||
|
||||
UInt32 length;
|
||||
// Read this pointer exactly once, so we're safe in case it is changed in another thread
|
||||
void *localReadPointer = readPointer;
|
||||
|
||||
// Either one of these may be NULL when the buffer is empty. So we must check both.
|
||||
if (!localReadPointer || !writePointer) {
|
||||
// The buffer is empty. Set it up to be written into.
|
||||
// This is one of the two places the write pointer can change; both are in the write thread.
|
||||
writePointer = buffer;
|
||||
length = bufferLength;
|
||||
} else if (writePointer <= localReadPointer) {
|
||||
// Write is before read in the buffer, OR write == read (meaning that the buffer is full).
|
||||
length = localReadPointer - writePointer;
|
||||
} else {
|
||||
// Write is behind read in the buffer. The available space wraps around.
|
||||
length = (bufferEnd - writePointer) + (localReadPointer - buffer);
|
||||
}
|
||||
|
||||
*returnedWritePointer = writePointer;
|
||||
return length;
|
||||
}
|
||||
|
||||
- (void)didWriteLength:(UInt32)length
|
||||
{
|
||||
// Assumptions:
|
||||
// [self lengthAvailableToWriteReturningPointer:] currently returns a value >= length
|
||||
// length > 0
|
||||
|
||||
void *oldWritePointer = writePointer;
|
||||
void *newWritePointer;
|
||||
|
||||
// Advance the write pointer, wrapping around if necessary.
|
||||
newWritePointer = writePointer + length;
|
||||
if (newWritePointer >= bufferEnd)
|
||||
newWritePointer -= bufferLength;
|
||||
|
||||
// This is one of the two places the write pointer can change; both are in the write thread.
|
||||
writePointer = newWritePointer;
|
||||
|
||||
// Also, if the read pointer is NULL, then we just wrote into a previously empty buffer, so set the read pointer.
|
||||
// This is the only place the read pointer is changed in the write thread.
|
||||
// The read thread should never change the read pointer when it is NULL, so this is safe.
|
||||
if (!readPointer)
|
||||
readPointer = oldWritePointer;
|
||||
}
|
||||
|
||||
@end
|
||||
|
||||
|
||||
void *allocateVirtualBuffer(UInt32 bufferLength)
|
||||
{
|
||||
kern_return_t error;
|
||||
vm_address_t originalAddress = NULL;
|
||||
vm_address_t realAddress = NULL;
|
||||
mach_port_t memoryEntry;
|
||||
vm_size_t memoryEntryLength;
|
||||
vm_address_t virtualAddress = NULL;
|
||||
|
||||
// We want to find where we can get 2 * bufferLength bytes of contiguous address space.
|
||||
// So let's just allocate that space, remember its address, and deallocate it.
|
||||
// (This doesn't actually have to touch all of that memory so it's not terribly expensive.)
|
||||
error = vm_allocate(mach_task_self(), &originalAddress, 2 * bufferLength, TRUE);
|
||||
if (error) {
|
||||
#if DEBUG
|
||||
mach_error("vm_allocate initial chunk", error);
|
||||
#endif
|
||||
return NULL;
|
||||
}
|
||||
|
||||
error = vm_deallocate(mach_task_self(), originalAddress, 2 * bufferLength);
|
||||
if (error) {
|
||||
#if DEBUG
|
||||
mach_error("vm_deallocate initial chunk", error);
|
||||
#endif
|
||||
return NULL;
|
||||
}
|
||||
|
||||
// Then allocate a "real" block of memory at the same address, but with the normal bufferLength.
|
||||
realAddress = originalAddress;
|
||||
error = vm_allocate(mach_task_self(), &realAddress, bufferLength, FALSE);
|
||||
if (error) {
|
||||
#if DEBUG
|
||||
mach_error("vm_allocate real chunk", error);
|
||||
#endif
|
||||
return NULL;
|
||||
}
|
||||
if (realAddress != originalAddress) {
|
||||
#if DEBUG
|
||||
DBLog(@"allocateVirtualBuffer: vm_allocate 2nd time didn't return same address (%p vs %p)", originalAddress, realAddress);
|
||||
#endif
|
||||
goto errorReturn;
|
||||
}
|
||||
|
||||
// Then make a memory entry for the area we just allocated.
|
||||
memoryEntryLength = bufferLength;
|
||||
error = mach_make_memory_entry(mach_task_self(), &memoryEntryLength, realAddress, VM_PROT_READ | VM_PROT_WRITE, &memoryEntry, NULL);
|
||||
if (error) {
|
||||
#if DEBUG
|
||||
mach_error("mach_make_memory_entry", error);
|
||||
#endif
|
||||
goto errorReturn;
|
||||
}
|
||||
if (!memoryEntry) {
|
||||
#if DEBUG
|
||||
DBLog(@"mach_make_memory_entry: returned memoryEntry of NULL");
|
||||
#endif
|
||||
goto errorReturn;
|
||||
}
|
||||
if (memoryEntryLength != bufferLength) {
|
||||
#if DEBUG
|
||||
DBLog(@"mach_make_memory_entry: size changed (from %0x to %0x)", bufferLength, memoryEntryLength);
|
||||
#endif
|
||||
goto errorReturn;
|
||||
}
|
||||
|
||||
// And map the area immediately after the first block, with length bufferLength, to that memory entry.
|
||||
virtualAddress = realAddress + bufferLength;
|
||||
error = vm_map(mach_task_self(), &virtualAddress, bufferLength, 0, FALSE, memoryEntry, 0, FALSE, VM_PROT_READ | VM_PROT_WRITE, VM_PROT_READ | VM_PROT_WRITE, VM_INHERIT_DEFAULT);
|
||||
if (error) {
|
||||
#if DEBUG
|
||||
mach_error("vm_map", error);
|
||||
#endif
|
||||
// TODO Retry from the beginning, instead of failing completely. There is a tiny (but > 0) probability that someone
|
||||
// will allocate this space out from under us.
|
||||
virtualAddress = NULL;
|
||||
goto errorReturn;
|
||||
}
|
||||
if (virtualAddress != realAddress + bufferLength) {
|
||||
#if DEBUG
|
||||
DBLog(@"vm_map: didn't return correct address (%p vs %p)", realAddress + bufferLength, virtualAddress);
|
||||
#endif
|
||||
goto errorReturn;
|
||||
}
|
||||
|
||||
// Success!
|
||||
return (void *)realAddress;
|
||||
|
||||
errorReturn:
|
||||
if (realAddress)
|
||||
vm_deallocate(mach_task_self(), realAddress, bufferLength);
|
||||
if (virtualAddress)
|
||||
vm_deallocate(mach_task_self(), virtualAddress, bufferLength);
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
void deallocateVirtualBuffer(void *buffer, UInt32 bufferLength)
|
||||
{
|
||||
kern_return_t error;
|
||||
|
||||
// We can conveniently deallocate both the vm_allocated memory and
|
||||
// the vm_mapped region at the same time.
|
||||
error = vm_deallocate(mach_task_self(), (vm_address_t)buffer, bufferLength * 2);
|
||||
if (error) {
|
||||
#if DEBUG
|
||||
mach_error("vm_deallocate in dealloc", error);
|
||||
#endif
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue