fix: metal renderer stuck when disconnect and resume stream

VoidLink/Stream/VideoDecoderRenderer.m

@@ -125,6 +125,7 @@ extern int ff_isom_write_av1c(AVIOContext *pb, const uint8_t *buf, int size,
 
     _parameterSetBuffers = [[NSMutableArray alloc] init];
     _frameQueue = [FrameQueue sharedInstance];
+    [_frameQueue start];
     _maxRefreshRate = [[UIScreen mainScreen] maximumFramesPerSecond];
 
     DataManager* dataMan = [[DataManager alloc] init];

VoidLink/Utility/FrameQueue.h

@@ -28,6 +28,7 @@ NS_ASSUME_NONNULL_BEGIN
 - (int)currentSoftCap;
 - (void)waitForEnqueue;
 - (void)shutdown;
+- (void)start;
 
 @end
 

VoidLink/Utility/FrameQueue.m

@@ -287,10 +287,15 @@
     return [self count] == 0;
 }
 
-- (void)clear {
-    os_unfair_lock_lock(&_lock);
+- (void)_clear_unsafe {
     _head = _tail = _count = 0;
     _frameDropMetrics = [[FloatBuffer alloc] initWithCapacity:512];
+}
+
+// The public clear method now safely calls the unsafe version.
+- (void)clear {
+    os_unfair_lock_lock(&_lock);
+    [self _clear_unsafe];
     os_unfair_lock_unlock(&_lock);
 }
 
@@ -331,6 +336,14 @@
     dispatch_semaphore_signal(_frameSemaphore);
 }
 
+- (void)start {
+    os_unfair_lock_lock(&_lock);
+    [self _clear_unsafe]; // Use the version without the lock
+    self.isStopping = NO;
+    os_unfair_lock_unlock(&_lock);
+    Log(LOG_I, @"FrameQueue (re)started");
+}
+
 // For use with NSLog("%@", franeQueue);
 - (NSString *)description {
     __block NSMutableArray *parts = [NSMutableArray arrayWithCapacity:_count];

VoidLink/ViewControllers/StreamFrameViewController.m

@@ -745,7 +745,9 @@
             _inactivityTimer = nil;
         }
         if (self.metalViewController) {
+            [self.metalViewController shutdown];
             [self.metalViewController.view removeFromSuperview];
+            [self.metalViewController removeFromParentViewController];
             self.metalViewController = nil;
             NSLog(@"Metal renderer stopped and cleaned up.");
         }