From 4a9e109de590a85aac2e90008aa715c83d1230dd Mon Sep 17 00:00:00 2001
From: TrueZhuanjia <veimin@foxmail.com>
Date: Sat, 25 Oct 2025 13:57:36 +0800
Subject: [PATCH] stop video render when app enters background without pip
 enabled for balanced mode

---
 VoidLink/Stream/VideoDecoderRenderer.h               | 1 +
 VoidLink/Stream/VideoDecoderRenderer.m               | 9 +++++++--
 VoidLink/ViewControllers/StreamFrameViewController.m | 7 ++++++-
 3 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/VoidLink/Stream/VideoDecoderRenderer.h b/VoidLink/Stream/VideoDecoderRenderer.h
index 3bc61d06..be311fd1 100644
--- a/VoidLink/Stream/VideoDecoderRenderer.h
+++ b/VoidLink/Stream/VideoDecoderRenderer.h
@@ -18,6 +18,7 @@
 
 @property (atomic, readonly) PlotMetrics decodeMetrics;
 @property (atomic, readonly) PlotMetrics frameQueueMetrics;
+@property (atomic, assign) bool appDidEnterBackgroundWithoutPiP;
 
 @property (nonatomic, strong, readonly) AVSampleBufferDisplayLayer *displayLayer;
 
diff --git a/VoidLink/Stream/VideoDecoderRenderer.m b/VoidLink/Stream/VideoDecoderRenderer.m
index 0609eaa1..fa655275 100644
--- a/VoidLink/Stream/VideoDecoderRenderer.m
+++ b/VoidLink/Stream/VideoDecoderRenderer.m
@@ -114,7 +114,9 @@ extern int ff_isom_write_av1c(AVIOContext *pb, const uint8_t *buf, int size,
 {
     NSLog(@"initializing video decoder %f", CACurrentMediaTime());
     self = [super init];
-
+    
+    _appDidEnterBackgroundWithoutPiP = false;
+    
     _sq = dispatch_queue_create("com.moonlight.VideoDecoderRenderer",
                                 dispatch_queue_attr_make_with_qos_class(DISPATCH_QUEUE_SERIAL, QOS_CLASS_USER_INTERACTIVE, 0));
 
@@ -263,6 +265,7 @@ int DrSubmitDecodeUnit(PDECODE_UNIT decodeUnit);
 // DisplayLink calls us every vsync we we try to present the most recent frame. We try to maintain a user-configurable buffer
 // of 1-5 frames. If the buffer is full, every other frame is dropped which just appears to the user as a lower framerate stream.
 - (void)renderModeAVSB:(CADisplayLink *)link {
+    
     CFTimeInterval start = link.timestamp;
     CFTimeInterval deadline = link.targetTimestamp;
     static CFTimeInterval lastTargetLocal = 0.0f;
@@ -326,6 +329,8 @@ int DrSubmitDecodeUnit(PDECODE_UNIT decodeUnit);
 // Legacy frame pacing callback - matches upstream/Integration behavior exactly
 - (void)displayLinkCallback:(CADisplayLink *)sender
 {
+    if(_appDidEnterBackgroundWithoutPiP) return;
+    
     VIDEO_FRAME_HANDLE handle;
     PDECODE_UNIT du;
     
@@ -374,7 +379,7 @@ int DrSubmitDecodeUnit(PDECODE_UNIT decodeUnit);
         Log(LOG_I, @"Setting timebase for stream to %d / %d", pts.value, pts.timescale);
     }
 
-    [self->_displayLayer enqueueSampleBuffer:frame.sampleBuffer];
+    if(!_appDidEnterBackgroundWithoutPiP) [self->_displayLayer enqueueSampleBuffer:frame.sampleBuffer];
 
 #ifdef DISPLAYLINK_VERBOSE
     // Some OS-level metrics I'm not sure what to do with
diff --git a/VoidLink/ViewControllers/StreamFrameViewController.m b/VoidLink/ViewControllers/StreamFrameViewController.m
index 82c9ac15..5c24d22a 100644
--- a/VoidLink/ViewControllers/StreamFrameViewController.m
+++ b/VoidLink/ViewControllers/StreamFrameViewController.m
@@ -1031,6 +1031,8 @@
 - (void)applicationWillResignActive:(NSNotification *)notification {
     //[self.pipController startPictureInPicture];
     //sleep(1);
+    _streamMan.videoRenderer.appDidEnterBackgroundWithoutPiP = true;
+
     [_streamView saveRelocatedWidgetViews];
 
 #if !TARGET_OS_TV
@@ -1046,6 +1048,7 @@
 }
 
 - (void)applicationDidBecomeActive:(NSNotification *)notification {
+    _streamMan.videoRenderer.appDidEnterBackgroundWithoutPiP = false;
     // Stop the background timer, since we're foregrounded again
     if (_inactivityTimer != nil) {
         Log(LOG_I, @"Stopping inactivity timer after becoming active again");
@@ -1075,11 +1078,13 @@
 
 // This fires when the home button is pressed
 - (void)applicationDidEnterBackground:(UIApplication *)application {
-
     NSLog(@"did enter background, %d, %@, %d", _settings.enablePIP, self.pipController, self.pipController.isPictureInPictureActive);
     if (_settings.enablePIP && self.pipController && self.pipController.isPictureInPictureActive) {
         //Log(LOG_I, @"PIP is active, not terminating stream");
+        _streamMan.videoRenderer.appDidEnterBackgroundWithoutPiP = false;
     } else {
+        _streamMan.videoRenderer.appDidEnterBackgroundWithoutPiP = true;
+
         if ([_settings.renderingBackend intValue] == RENDER_METAL && self.metalViewController) {
             Log(LOG_I, @"Pausing Metal renderer on background");
             [self.metalViewController pauseRendering];