fix pip open siri black screen bug

AgoraIO · plutoless · Feb 10, 2023 · Dec 30, 2022 · Dec 30, 2022 · Dec 30, 2022
commit dd978719b8aaf169a25d8ab20d36134fb62fda95
diff --git a/iOS/APIExample/APIExample/Common/ExternalVideo/AgoraSampleBufferRender.m b/iOS/APIExample/APIExample/Common/ExternalVideo/AgoraSampleBufferRender.m
@@ -152,6 +152,9 @@ - (void)renderVideoData:(AgoraOutputVideoFrame *_Nonnull)videoData {
         CMSampleBufferCreateReadyWithImageBuffer(kCFAllocatorDefault, pixelBuffer, videoInfo, &timingInfo, &sampleBuffer);
 
         [self.displayLayer enqueueSampleBuffer:sampleBuffer];
+        if (self.displayLayer.status == AVQueuedSampleBufferRenderingStatusFailed) {
+            [self.displayLayer flush];
+        }
         CMSampleBufferInvalidate(sampleBuffer);
         CFRelease(sampleBuffer);