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| Original file line number | Diff line number | Diff line change |
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| // | ||
| // SharkfoodMuteSwitchDetector.h | ||
| // | ||
| // Created by Moshe Gottlieb on 6/2/13. | ||
| // Copyright (c) 2013 Sharkfood. All rights reserved. | ||
| // | ||
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| #import <Foundation/Foundation.h> | ||
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| typedef void(^SharkfoodMuteSwitchDetectorBlock)(BOOL silent); | ||
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| @interface SharkfoodMuteSwitchDetector : NSObject | ||
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| +(SharkfoodMuteSwitchDetector*)shared; | ||
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| @property (nonatomic,readonly) BOOL isMute; | ||
| @property (nonatomic,copy) SharkfoodMuteSwitchDetectorBlock silentNotify; | ||
| @property (nonatomic) BOOL disabled; | ||
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| @end |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,154 @@ | ||
| // | ||
| // SharkfoodMuteSwitchDetector.m | ||
| // | ||
| // Created by Moshe Gottlieb on 6/2/13. | ||
| // Copyright (c) 2013 Sharkfood. All rights reserved. | ||
| // | ||
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| #import "SharkfoodMuteSwitchDetector.h" | ||
| #import <AudioToolbox/AudioToolbox.h> | ||
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| /** | ||
| Sound completion proc - this is the real magic, we simply calculate how long it took for the sound to finish playing | ||
| In silent mode, playback will end very fast (but not in zero time) | ||
| */ | ||
| void SharkfoodSoundMuteNotificationCompletionProc(SystemSoundID ssID,void* clientData); | ||
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| @interface SharkfoodMuteSwitchDetector() | ||
| /** | ||
| Find out how fast the completion call is called | ||
| */ | ||
| @property (nonatomic,assign) NSTimeInterval interval; | ||
| /** | ||
| Our silent sound (0.5 sec) | ||
| */ | ||
| @property (nonatomic,assign) SystemSoundID soundId; | ||
| /** | ||
| Set to true after the block was set or during init. | ||
| Otherwise the block is called only when the switch value actually changes | ||
| */ | ||
| @property (nonatomic,assign) BOOL forceEmit; | ||
| /** | ||
| Sound completion, objc | ||
| */ | ||
| -(void)complete; | ||
| /** | ||
| Our loop, checks sound switch | ||
| */ | ||
| -(void)loopCheck; | ||
| /** | ||
| Pause while in the background, if your app supports playing audio in the background, you want this. | ||
| Otherwise your app will be rejected. | ||
| */ | ||
| -(void)didEnterBackground; | ||
| /** | ||
| Resume when entering foreground | ||
| */ | ||
| -(void)willReturnToForeground; | ||
| /** | ||
| Schedule a next check | ||
| */ | ||
| -(void)scheduleCall; | ||
| /** | ||
| Is paused? | ||
| */ | ||
| @property (nonatomic,assign) BOOL isPaused; | ||
| /** | ||
| Currently playing? used when returning from the background (if went to background and foreground really quickly) | ||
| */ | ||
| @property (nonatomic,assign) BOOL isPlaying; | ||
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| @end | ||
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| void SharkfoodSoundMuteNotificationCompletionProc(SystemSoundID ssID,void* clientData){ | ||
| SharkfoodMuteSwitchDetector* detecotr = (__bridge SharkfoodMuteSwitchDetector*)clientData; | ||
| [detecotr complete]; | ||
| } | ||
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| @implementation SharkfoodMuteSwitchDetector | ||
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| -(id)init{ | ||
| self = [super init]; | ||
| if (self){ | ||
| NSURL* url = [[NSBundle mainBundle] URLForResource:@"mute" withExtension:@"caf"]; | ||
| if (AudioServicesCreateSystemSoundID((__bridge CFURLRef)url, &_soundId) == kAudioServicesNoError){ | ||
| AudioServicesAddSystemSoundCompletion(self.soundId, CFRunLoopGetMain(), kCFRunLoopDefaultMode, SharkfoodSoundMuteNotificationCompletionProc,(__bridge void *)(self)); | ||
| UInt32 yes = 1; | ||
| AudioServicesSetProperty(kAudioServicesPropertyIsUISound, sizeof(_soundId),&_soundId,sizeof(yes), &yes); | ||
| [self performSelector:@selector(loopCheck) withObject:nil afterDelay:1]; | ||
| self.forceEmit = YES; | ||
| } else { | ||
| NSLog(@"Sharkfood Error"); | ||
| self.soundId = -1; | ||
| } | ||
| [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(didEnterBackground) name:UIApplicationDidEnterBackgroundNotification object:nil]; | ||
| [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(willReturnToForeground) name:UIApplicationWillEnterForegroundNotification object:nil]; | ||
| } | ||
| return self; | ||
| } | ||
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| -(void)didEnterBackground{ | ||
| self.isPaused = YES; | ||
| } | ||
| -(void)willReturnToForeground{ | ||
| self.isPaused = NO; | ||
| if (!self.isPlaying){ | ||
| [self scheduleCall]; | ||
| } | ||
| } | ||
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| -(void)setSilentNotify:(SharkfoodMuteSwitchDetectorBlock)silentNotify{ | ||
| _silentNotify = [silentNotify copy]; | ||
| self.forceEmit = YES; | ||
| } | ||
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| +(SharkfoodMuteSwitchDetector*)shared{ | ||
| static SharkfoodMuteSwitchDetector* sShared = nil; | ||
| if (!sShared) | ||
| sShared = [SharkfoodMuteSwitchDetector new]; | ||
| return sShared; | ||
| } | ||
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| -(void)scheduleCall{ | ||
| [[self class] cancelPreviousPerformRequestsWithTarget:self selector:@selector(loopCheck) object:nil]; | ||
| [self performSelector:@selector(loopCheck) withObject:nil afterDelay:1]; | ||
| } | ||
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| -(void)complete{ | ||
| self.isPlaying = NO; | ||
| NSTimeInterval elapsed = [NSDate timeIntervalSinceReferenceDate] - self.interval; | ||
| BOOL isMute = elapsed < 0.1; // Should have been 0.5 sec, but it seems to return much faster (0.3something) | ||
| if (self.isMute != isMute || self.forceEmit) { | ||
| self.forceEmit = NO; | ||
| _isMute = isMute; | ||
| if (self.silentNotify) | ||
| self.silentNotify(isMute); | ||
| } | ||
| [self scheduleCall]; | ||
| } | ||
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| -(void)loopCheck{ | ||
| if (!self.isPaused){ | ||
| self.interval = [NSDate timeIntervalSinceReferenceDate]; | ||
| self.isPlaying = YES; | ||
| AudioServicesPlaySystemSound(self.soundId); | ||
| } | ||
| } | ||
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| // For reference only, this DTOR will never be invoked. | ||
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| -(void)dealloc{ | ||
| if (self.soundId != -1){ | ||
| AudioServicesRemoveSystemSoundCompletion(self.soundId); | ||
| AudioServicesDisposeSystemSoundID(self.soundId); | ||
| } | ||
| [[NSNotificationCenter defaultCenter] removeObserver:self]; | ||
| } | ||
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| @end |
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