fix: Fix black screen issue in AgoraVideoView caused by incorrect res…

…ize handling (#2052)

The `resize` value from `OnVideoFrameReceived` became invalid after the
recent `iris` refactor(>= 4.3.2). We now manage the resize check
internally to prevent black screens in `AgoraVideoView`.

shared/darwin/TextureRenderer.mm

@@ -23,7 +23,7 @@ @interface TextureRender ()
 namespace {
 class RendererDelegate : public agora::iris::VideoFrameObserverDelegate {
 public:
-  RendererDelegate(void *renderer) : renderer_(renderer) { }
+  RendererDelegate(void *renderer) : renderer_(renderer), pre_width_(0), pre_height_(0) { }
 
   void OnVideoFrameReceived(const void *videoFrame,
                             const IrisRtcVideoFrameConfig &config, bool resize) override {
@@ -36,11 +36,15 @@ void OnVideoFrameReceived(const void *videoFrame,
             return;
         }
 
+        int tmpWidth = vf->width;
+        int tmpHeight = vf->height;
+        bool is_resize = pre_width_ != tmpWidth || pre_height_ != tmpHeight;
+        pre_width_ = tmpWidth;
+        pre_height_ = tmpHeight;
+
         CVPixelBufferRef _Nullable pixelBuffer = reinterpret_cast<CVPixelBufferRef>(vf->pixelBuffer);
         if (pixelBuffer) {
-            if (resize) {
-              int tmpWidth = vf->width;
-              int tmpHeight = vf->height;
+            if (is_resize) {
               dispatch_async(dispatch_get_main_queue(), ^{
                   [renderer.channel invokeMethod:@"onSizeChanged"
                                      arguments:@{@"width": @(tmpWidth),
@@ -69,6 +73,8 @@ void OnVideoFrameReceived(const void *videoFrame,
 
 public:
   void *renderer_;
+  int pre_width_;
+  int pre_height_;
 };
 }