send dummy event to prevent stuttering

VoidLink/Base.lproj/iPad.storyboard

@@ -998,7 +998,7 @@
                                     </switch>
                                 </subviews>
                             </stackView>
-                            <stackView opaque="NO" contentMode="scaleToFill" ambiguous="YES" axis="vertical" spacing="5" translatesAutoresizingMaskIntoConstraints="NO" id="6hG-dw-YSr" userLabel="renderingBackend Stack">
+                            <stackView verifyAmbiguity="off" opaque="NO" contentMode="scaleToFill" ambiguous="YES" axis="vertical" spacing="5" translatesAutoresizingMaskIntoConstraints="NO" id="6hG-dw-YSr" userLabel="renderingBackend Stack">
                                 <rect key="frame" x="22" y="1204" width="380" height="56.5"/>
                                 <subviews>
                                     <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Rendering Mode (Experimental)" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="v8l-hf-kiR">
@@ -1057,6 +1057,24 @@
                                     </switch>
                                 </subviews>
                             </stackView>
+                            <stackView opaque="NO" contentMode="scaleToFill" spacing="20" id="RGd-TV-mkU" userLabel="sendDummyEvent">
+                                <rect key="frame" x="432" y="2264" width="280" height="31"/>
+                                <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
+                                <subviews>
+                                    <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Send Dummy Event" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" minimumScaleFactor="0.64999997615814209" adjustsLetterSpacingToFitWidth="YES" adjustsFontForContentSizeCategory="YES" translatesAutoresizingMaskIntoConstraints="NO" id="Gus-CK-wpc" userLabel="uiLabel">
+                                        <rect key="frame" x="0.0" y="0.0" width="130" height="31"/>
+                                        <fontDescription key="fontDescription" type="system" pointSize="17"/>
+                                        <nil key="textColor"/>
+                                        <nil key="highlightedColor"/>
+                                    </label>
+                                    <switch opaque="NO" contentMode="scaleToFill" horizontalHuggingPriority="750" verticalHuggingPriority="750" contentHorizontalAlignment="center" contentVerticalAlignment="center" on="YES" translatesAutoresizingMaskIntoConstraints="NO" id="eE4-oT-Gzb" userLabel="sendDummyEventSwitch">
+                                        <rect key="frame" x="150" y="0.0" width="132" height="31"/>
+                                        <constraints>
+                                            <constraint firstAttribute="width" constant="130" id="bOP-xq-rYt"/>
+                                        </constraints>
+                                    </switch>
+                                </subviews>
+                            </stackView>
                         </subviews>
                         <color key="backgroundColor" white="0.0" alpha="0.0" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
                     </view>
@@ -1130,6 +1148,8 @@
                         <outlet property="reverseMouseWheelDirectionSelector" destination="mTM-NL-CcF" id="EYZ-Qg-OLu"/>
                         <outlet property="reverseMouseWheelDirectionStack" destination="2P0-Tg-zWd" id="Zz1-VC-0hC"/>
                         <outlet property="scrollView" destination="WRy-3f-gEP" id="V8B-oF-27B"/>
+                        <outlet property="sendDummyEventStack" destination="RGd-TV-mkU" id="87h-08-4Og"/>
+                        <outlet property="sendDummyEventSwitch" destination="eE4-oT-Gzb" id="q51-ds-zJC"/>
                         <outlet property="slideToMenuDistanceSlider" destination="8p6-FP-UWP" id="8z3-2I-oPd"/>
                         <outlet property="slideToSettingsDistanceStack" destination="pN7-bs-8yu" id="azp-qU-GnS"/>
                         <outlet property="slideToSettingsDistanceUILabel" destination="pMN-6T-aYE" id="If8-fO-rya"/>

VoidLink/Base.lproj/iPhone.storyboard

@@ -1795,6 +1795,24 @@
                                     </switch>
                                 </subviews>
                             </stackView>
+                            <stackView opaque="NO" contentMode="scaleToFill" spacing="20" id="6yl-Mb-0o6" userLabel="sendDummyEventStack">
+                                <rect key="frame" x="437" y="1880" width="280" height="31"/>
+                                <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
+                                <subviews>
+                                    <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Send Dummy Event" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" minimumScaleFactor="0.64999997615814209" adjustsLetterSpacingToFitWidth="YES" adjustsFontForContentSizeCategory="YES" translatesAutoresizingMaskIntoConstraints="NO" id="Vgl-rL-Ppi" userLabel="uiLabel">
+                                        <rect key="frame" x="0.0" y="0.0" width="130" height="31"/>
+                                        <fontDescription key="fontDescription" type="system" pointSize="17"/>
+                                        <nil key="textColor"/>
+                                        <nil key="highlightedColor"/>
+                                    </label>
+                                    <switch opaque="NO" contentMode="scaleToFill" horizontalHuggingPriority="750" verticalHuggingPriority="750" contentHorizontalAlignment="center" contentVerticalAlignment="center" on="YES" translatesAutoresizingMaskIntoConstraints="NO" id="OlN-GM-xLT" userLabel="sendDummyEventSwitch">
+                                        <rect key="frame" x="150" y="0.0" width="132" height="31"/>
+                                        <constraints>
+                                            <constraint firstAttribute="width" constant="130" id="hZt-X1-KU1"/>
+                                        </constraints>
+                                    </switch>
+                                </subviews>
+                            </stackView>
                         </subviews>
                         <color key="backgroundColor" white="0.0" alpha="0.0" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
                     </view>
@@ -1867,6 +1885,8 @@
                         <outlet property="reverseMouseWheelDirectionSelector" destination="Uca-fD-4AC" id="gLa-40-suX"/>
                         <outlet property="reverseMouseWheelDirectionStack" destination="iS2-99-oox" id="dl2-8e-idU"/>
                         <outlet property="scrollView" destination="Xq6-9l-Oey" id="nif-2O-JNf"/>
+                        <outlet property="sendDummyEventStack" destination="6yl-Mb-0o6" id="KN5-ty-oTQ"/>
+                        <outlet property="sendDummyEventSwitch" destination="OlN-GM-xLT" id="DQ8-Un-c5b"/>
                         <outlet property="slideToMenuDistanceSlider" destination="XNA-Kx-vqV" id="8oD-Sy-6k7"/>
                         <outlet property="slideToSettingsDistanceStack" destination="eom-7m-dH2" id="m43-tx-nAT"/>
                         <outlet property="slideToSettingsDistanceUILabel" destination="cti-T5-cSE" id="8Xz-vc-bO5"/>

VoidLink/Database/DataManager.h

@@ -78,25 +78,25 @@ typedef NS_ENUM(NSInteger, WidgetSizeTransition) {
                  gyroSensitivity:(CGFloat)gyroSensitivity
           touchMoveEventInterval:(NSInteger)touchMoveEventInterval
       reverseMouseWheelDirection:(BOOL)reverseMouseWheelDirection
-                  asyncNativeTouchPriority:(NSInteger)asyncNativeTouchPriority
+        asyncNativeTouchPriority:(NSInteger)asyncNativeTouchPriority
        liftStreamViewForKeyboard:(BOOL)liftStreamViewForKeyboard
              showKeyboardToolbar:(BOOL)showKeyboardToolbar
                    optimizeGames:(BOOL)optimizeGames
                  multiController:(BOOL)multiController
-               buttonVisualFeedback:(BOOL)buttonVisualFeedback
+            buttonVisualFeedback:(BOOL)buttonVisualFeedback
                  swapABXYButtons:(BOOL)swapABXYButtons
                        audioOnPC:(BOOL)audioOnPC
-                       redirectMic:(BOOL)redirectMic
+                     redirectMic:(BOOL)redirectMic
                   preferredCodec:(uint32_t)preferredCodec
-                       enableYUV444:(BOOL)enableYUV444
+                    enableYUV444:(BOOL)enableYUV444
                        enablePIP:(BOOL)enablePIP
                        enableHdr:(BOOL)enableHdr
                   btMouseSupport:(BOOL)btMouseSupport
                // absoluteTouchMode:(BOOL)absoluteTouchMode
                        touchMode:(NSInteger)touchMode
                statsOverlayLevel:(NSInteger)statsOverlayLevel
-                    statsOverlayEnabled:(BOOL)statsOverlayEnabled
+             statsOverlayEnabled:(BOOL)statsOverlayEnabled
-                   unlockDisplayOrientation:(BOOL)unlockDisplayOrientation
+        unlockDisplayOrientation:(BOOL)unlockDisplayOrientation
               resolutionSelected:(NSInteger)resolutionSelected
              externalDisplayMode:(NSInteger)externalDisplayMode
            localMousePointerMode:(NSInteger)localMousePointerMode
@@ -104,8 +104,9 @@ typedef NS_ENUM(NSInteger, WidgetSizeTransition) {
                     enableGraphs:(BOOL)enableGraphs
                     graphOpacity:(NSInteger)graphOpacity
                 renderingBackend:(NSInteger)renderingBackend
-                framePacingMode:(NSInteger)framePacingMode
+                 framePacingMode:(NSInteger)framePacingMode
-           backgroundSessionTimer:(NSInteger)backgroundSessionTimer;
+               sendDummyEvent:(BOOL)sendDummyEvent
+          backgroundSessionTimer:(NSInteger)backgroundSessionTimer;
 
 - (NSArray*) getHosts;
 - (void) updateHost:(TemporaryHost*)host;

VoidLink/Database/DataManager.m

@@ -100,6 +100,7 @@
                     graphOpacity:(NSInteger)graphOpacity
                 renderingBackend:(NSInteger)renderingBackend
                  framePacingMode:(NSInteger)framePacingMode
+               sendDummyEvent:(BOOL)sendDummyEvent
           backgroundSessionTimer:(NSInteger)backgroundSessionTimer{
 
     [_managedObjectContext performBlockAndWait:^{
@@ -151,6 +152,7 @@
         settingsToSave.graphOpacity = [NSNumber numberWithInteger:graphOpacity];
         settingsToSave.renderingBackend = [NSNumber numberWithInteger:renderingBackend];
         settingsToSave.framePacingMode = [NSNumber numberWithInteger:framePacingMode];
+        settingsToSave.sendDummyEvent = sendDummyEvent;
         [self saveData];
     }];
 }

VoidLink/Database/TemporarySettings.h

@@ -70,6 +70,7 @@
 @property (nonatomic, retain) NSNumber * frameQueueSize;
 @property (nonatomic, retain) NSNumber * graphOpacity;
 @property (nonatomic, retain) NSNumber * renderingBackend;
+@property (nonatomic) BOOL sendDummyEvent;
 @property (nonatomic, retain) NSNumber * framePacingMode;
 
 - (id) initFromSettings:(Settings*)settings;

VoidLink/Database/TemporarySettings.m

@@ -125,6 +125,7 @@
     self.graphOpacity = settings.graphOpacity;
     self.renderingBackend = settings.renderingBackend;
     self.framePacingMode = settings.framePacingMode;
+    self.sendDummyEvent = settings.sendDummyEvent;
     self.backgroundSessionTimer = settings.backroundSessionTimer;
 #endif
     self.uniqueId = settings.uniqueId;

VoidLink/Limelight.xcdatamodeld/VoidLink v1.0.xcdatamodel/contents

@@ -56,6 +56,7 @@
         <attribute name="renderingBackend" attributeType="Integer 32" defaultValueString="0" usesScalarValueType="NO" syncable="YES"/>
         <attribute name="resolutionSelected" optional="YES" attributeType="Integer 16" defaultValueString="4" usesScalarValueType="NO" syncable="YES"/>
         <attribute name="reverseMouseWheelDirection" attributeType="Boolean" defaultValueString="YES" usesScalarValueType="YES" syncable="YES"/>
+        <attribute name="sendDummyEvent" attributeType="Boolean" defaultValueString="YES" usesScalarValueType="YES" syncable="YES"/>
         <attribute name="settingsMenuMode" optional="YES" attributeType="Integer 16" defaultValueString="0" usesScalarValueType="NO" syncable="YES"/>
         <attribute name="settingsMenuWidth" attributeType="Float" defaultValueString="370" usesScalarValueType="NO" syncable="YES"/>
         <attribute name="showKeyboardToolbar" attributeType="Boolean" defaultValueString="NO" usesScalarValueType="YES" syncable="YES"/>

VoidLink/Localization/Localizable.xcstrings

@@ -4719,6 +4719,35 @@
         }
       }
     },
+    "sendDummyEventStackTip" : {
+      "extractionState" : "manual",
+      "localizations" : {
+        "en" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "This fixes stuttering on some devices, particularly those on iPadOS 26."
+          }
+        },
+        "zh-Hans" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "该选项解决了部分设备的串流卡顿问题， 尤其是升级了iPadOS 26的设备。"
+          }
+        },
+        "zh-Hant" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "該選項解決了部分裝置的串流卡頓問題，尤其是升級了 iPadOS 26 的裝置。"
+          }
+        },
+        "zh-HK" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "該選項解決了部分裝置的串流卡頓問題，尤其是升級了 iPadOS 26 的裝置。"
+          }
+        }
+      }
+    },
     "SensitivityX: %.2f" : {
       "extractionState" : "manual",
       "localizations" : {

VoidLink/ViewControllers/SettingsViewController.h

@@ -132,6 +132,9 @@
 @property (strong, nonatomic) IBOutlet UIStackView *buttonVisualFeedbackStack;
 @property (strong, nonatomic) IBOutlet UISwitch *buttonVisualFeedbackSwitch;
 
+@property (strong, nonatomic) IBOutlet UIStackView *sendDummyEventStack;
+@property (strong, nonatomic) IBOutlet UISwitch *sendDummyEventSwitch;
+
 @property (nonatomic, strong) MicHandler *micHandler;
 
 

VoidLink/ViewControllers/SettingsViewController.m

@@ -704,6 +704,8 @@ BOOL isCustomResolution(int resolutionSelected) {
     [self addSetting:self.performanceGraphStack ofId:@"performanceGraphStack" withInfoTag:YES withDynamicLabel:NO to:experimentalSection];
     [self addDynamicLabelForStack:self.graphOpacityStack];
 
+    [self addSetting:self.sendDummyEventStack ofId:@"sendDummyEventStack" withInfoTag:YES withDynamicLabel:NO to:experimentalSection];
+    
     [experimentalSection addToParentStack:_parentStack];
     [experimentalSection setExpanded:YES];
 }
@@ -1145,6 +1147,10 @@ BOOL isCustomResolution(int resolutionSelected) {
         tipText = [LocalizationHelper localizedStringForKey:@"redirectMicStackTip"];
         showOnlineDocAction = false;
     }
+    if([sender.superview.accessibilityIdentifier isEqualToString: @"sendDummyEventStack"]){
+        tipText = [LocalizationHelper localizedStringForKey:@"sendDummyEventStackTip"];
+        showOnlineDocAction = false;
+    }
 
     UIAlertController *tipsAlertController = [UIAlertController alertControllerWithTitle: [LocalizationHelper localizedStringForKey:@"Tips"] message:tipText preferredStyle:UIAlertControllerStyleAlert];
 
@@ -1683,6 +1689,8 @@ BOOL isCustomResolution(int resolutionSelected) {
     [self.externalDisplayModeSelector setSelectedSegmentIndex:currentSettings.externalDisplayMode.integerValue];
     [self.localMousePointerModeSelector setSelectedSegmentIndex:currentSettings.localMousePointerMode.integerValue];
     
+    [self.sendDummyEventSwitch setOn:currentSettings.sendDummyEvent];// Load old setting
+    
     settingsViewJustLoaded = false;
 }
 
@@ -2476,6 +2484,7 @@ BOOL isCustomResolution(int resolutionSelected) {
     }
     NSInteger externalDisplayMode = [self.externalDisplayModeSelector selectedSegmentIndex];
     NSInteger localMousePointerMode = [self.localMousePointerModeSelector selectedSegmentIndex];
+    BOOL sendDummyEvent = self.sendDummyEventSwitch.isOn;
     NSInteger backgroundSessionTimer = self.backgroundSessionTimerSlider.value == self.backgroundSessionTimerSlider.maximumValue ? (uint32_t) INT16_MAX : (uint32_t)self.backgroundSessionTimerSlider.value;
     
     [dataMan saveSettingsWithBitrate:_bitrate
@@ -2522,6 +2531,7 @@ BOOL isCustomResolution(int resolutionSelected) {
                         graphOpacity:graphOpacity
                     renderingBackend:renderingBackend
                      framePacingMode:framePacingMode
+                      sendDummyEvent:sendDummyEvent
               backgroundSessionTimer:backgroundSessionTimer];
 }
 

VoidLink/ViewControllers/StreamFrameViewController.m

@@ -82,6 +82,8 @@
     dispatch_block_t _delayedRemoveExtScreen;
     VideoDecoderRenderer *_videoRenderer;
     BOOL _isRestoringFromPiP;
+    CADisplayLink *_displayLink;
+
 #if !TARGET_OS_TV
     CustomEdgeSlideGestureRecognizer *_slideToSettingsRecognizer;
     CustomEdgeSlideGestureRecognizer *_slideToCmdToolRecognizer;
@@ -89,6 +91,7 @@
     LayoutOnScreenControlsViewController *_layoutOnScreenControlsVC;
     ToolboxViewController* toolBoxViewController;
     MicHandler* micHandler;
+
 #else
     UITapGestureRecognizer *_menuTapGestureRecognizer;
     UITapGestureRecognizer *_menuDoubleTapGestureRecognizer;
@@ -425,11 +428,24 @@
     if (self.imguiView && self.imguiView.mtkView.superview) {
         [self.view bringSubviewToFront:self.imguiView.mtkView];
     }
-
+    
+    if(_settings.sendDummyEvent){
+        [self setupDisplayLink];
+        [self startDisplayLink];
+    }
     NSLog(@"frameview gestures: %d", (uint32_t)[self.view.gestureRecognizers count]);
     NSLog(@"streamview gestures: %d", (uint32_t)[_streamView.gestureRecognizers count]);
 }
 
+- (void)viewWillAppear:(BOOL)animated {
+    if(_settings.sendDummyEvent) [self startDisplayLink];
+}
+
+- (void)viewWillDisappear:(BOOL)animated {
+    [super viewWillDisappear:animated];
+    [self stopDisplayLink];
+}
+
 - (void)viewDidAppear:(BOOL)animated
 {
     [super viewDidAppear:animated];
@@ -1123,6 +1139,7 @@
 
 - (void)expandSettingsView{
     self.mainFrameViewcontroller.settingsExpandedInStreamView = true; //notify mainFrameViewContorller that this is a setting expansion in stream view, some settings shall be disabled.
+    [self stopDisplayLink];
     [self.mainFrameViewcontroller expandSettingsView];
 }
 
@@ -1592,4 +1609,30 @@
     dispatch_after(delayTime, dispatch_get_main_queue(), block);
 }
 
+- (void)dealloc {
+    [self stopDisplayLink];
+}
+
+- (void)setupDisplayLink {
+    if (_displayLink != nil) return;
+    _displayLink = [CADisplayLink displayLinkWithTarget:self selector:@selector(displayLinkTick:)];
+    [_displayLink addToRunLoop:[NSRunLoop mainRunLoop] forMode:NSRunLoopCommonModes];
+}
+
+- (void)startDisplayLink {
+    _displayLink.paused = NO;
+}
+
+- (void)stopDisplayLink {
+    [_displayLink invalidate];
+    _displayLink = nil;
+}
+
+- (void)displayLinkTick:(CADisplayLink *)link {
+    dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
+        LiSendKeyboardEvent(0xFF, KEY_ACTION_UP, 0);
+    });
+}
+
+
 @end

VoidLink/mul.lproj/iPad.xcstrings

@@ -1717,6 +1717,36 @@
         }
       }
     },
+    "Gus-CK-wpc.text" : {
+      "comment" : "Class = \"UILabel\"; text = \"Send Dummy Event\"; ObjectID = \"Gus-CK-wpc\";",
+      "extractionState" : "extracted_with_value",
+      "localizations" : {
+        "en" : {
+          "stringUnit" : {
+            "state" : "new",
+            "value" : "Send Dummy Event"
+          }
+        },
+        "zh-Hans" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "发送假事件"
+          }
+        },
+        "zh-Hant" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "發送假事件"
+          }
+        },
+        "zh-HK" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "發送假事件"
+          }
+        }
+      }
+    },
     "H8S-aI-EBo.segmentTitles[0]" : {
       "comment" : "Class = \"UISegmentedControl\"; H8S-aI-EBo.segmentTitles[0] = \"hovering\"; ObjectID = \"H8S-aI-EBo\";",
       "extractionState" : "extracted_with_value",

VoidLink/mul.lproj/iPhone.xcstrings

@@ -3631,6 +3631,36 @@
         }
       }
     },
+    "Vgl-rL-Ppi.text" : {
+      "comment" : "Class = \"UILabel\"; text = \"Send Dummy Event\"; ObjectID = \"Vgl-rL-Ppi\";",
+      "extractionState" : "extracted_with_value",
+      "localizations" : {
+        "en" : {
+          "stringUnit" : {
+            "state" : "new",
+            "value" : "Send Dummy Event"
+          }
+        },
+        "zh-Hans" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "发送假事件"
+          }
+        },
+        "zh-Hant" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "發送假事件"
+          }
+        },
+        "zh-HK" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "發送假事件"
+          }
+        }
+      }
+    },
     "wOV-Sp-UUE.segmentTitles[0]" : {
       "comment" : "Class = \"UISegmentedControl\"; wOV-Sp-UUE.segmentTitles[0] = \"Slide From Left Edge\"; ObjectID = \"wOV-Sp-UUE\";",
       "extractionState" : "extracted_with_value",