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Fix excessive CPU usage caused by motion sensor updates #195

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Merged
TheMoonThatRises merged 1 commit into from
Sep 22, 2025
Merged

Fix excessive CPU usage caused by motion sensor updates #195

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14 changes: 14 additions & 0 deletions PlayTools/Controls/PTFakeTouch/NSObject+Swizzle.m
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Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,7 @@
#import "PTFakeMetaTouch.h"
#import <VideoSubscriberAccount/VideoSubscriberAccount.h>
#import <AVFoundation/AVFoundation.h>
#import <CoreMotion/CoreMotion.h>

__attribute__((visibility("hidden")))
@interface PTSwizzleLoader : NSObject
Expand Down Expand Up @@ -150,6 +151,15 @@ - (void)hook_requestRecordPermission:(void (^)(BOOL))response {
}
}

- (instancetype)hook_CMMotionManager_init {
CMMotionManager *motionManager = (CMMotionManager *)[self hook_CMMotionManager_init];
// The default update interval is 0, which may lead to excessive CPU usage
motionManager.accelerometerUpdateInterval = 0.01;
motionManager.deviceMotionUpdateInterval = 0.01;
motionManager.gyroUpdateInterval = 0.01;
return motionManager;
}

// Hook for UIUserInterfaceIdiom

// - (long long) hook_userInterfaceIdiom {
Expand Down Expand Up @@ -287,6 +297,10 @@ + (void)load {
if ([[PlaySettings shared] checkMicPermissionSync]) {
[objc_getClass("AVAudioSession") swizzleInstanceMethod:@selector(requestRecordPermission:) withMethod:@selector(hook_requestRecordPermission:)];
}

if ([[PlaySettings shared] limitMotionUpdateFrequency]) {
[objc_getClass("CMMotionManager") swizzleInstanceMethod:@selector(init) withMethod:@selector(hook_CMMotionManager_init)];
}
}

@end
3 changes: 3 additions & 0 deletions PlayTools/PlaySettings.swift
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Expand Up @@ -85,6 +85,8 @@ let settings = PlaySettings.shared
@objc lazy var hideTitleBar = settingsData.hideTitleBar

@objc lazy var checkMicPermissionSync = settingsData.checkMicPermissionSync

@objc lazy var limitMotionUpdateFrequency = settingsData.limitMotionUpdateFrequency
}

struct AppSettingsData: Codable {
Expand All @@ -111,4 +113,5 @@ struct AppSettingsData: Codable {
var enableScrollWheel = true
var hideTitleBar = false
var checkMicPermissionSync = false
var limitMotionUpdateFrequency = false
}