Add VideoSink interface to SurfaceViewRenderer.

webrtc/sdk/android/api/org/webrtc/SurfaceViewRenderer.java

Index: webrtc/sdk/android/api/org/webrtc/SurfaceViewRenderer.java
diff --git a/webrtc/sdk/android/api/org/webrtc/SurfaceViewRenderer.java b/webrtc/sdk/android/api/org/webrtc/SurfaceViewRenderer.java
index 06d72425a84bec41f0ba11fc42835018ca58047c..f664b014e1e25134435d3f2ca92892980a77e5f3 100644
--- a/webrtc/sdk/android/api/org/webrtc/SurfaceViewRenderer.java
+++ b/webrtc/sdk/android/api/org/webrtc/SurfaceViewRenderer.java
@@ -28,7 +28,7 @@ import java.util.concurrent.CountDownLatch;
  * Interaction with the layout framework in onMeasure and onSizeChanged.
  */
 public class SurfaceViewRenderer
-    extends SurfaceView implements SurfaceHolder.Callback, VideoRenderer.Callbacks {
+    extends SurfaceView implements SurfaceHolder.Callback, VideoRenderer.Callbacks, VideoSink {
   private static final String TAG = "SurfaceViewRenderer";
 
   // Cached resource name.
@@ -208,6 +208,13 @@ public class SurfaceViewRenderer
     eglRenderer.renderFrame(frame);
   }
 
+  // VideoSink interface.
+  @Override
+  public void onFrame(VideoFrame frame) {
+    updateFrameDimensionsAndReportEvents(frame);
+    eglRenderer.onFrame(frame);
+  }
+
   // View layout interface.
   @Override
   protected void onMeasure(int widthSpec, int heightSpec) {
@@ -339,6 +346,39 @@ public class SurfaceViewRenderer
     }
   }
 
+  // Update frame dimensions and report any changes to |rendererEvents|.
+  private void updateFrameDimensionsAndReportEvents(VideoFrame frame) {
+    synchronized (layoutLock) {
+      if (isRenderingPaused) {
+        return;
+      }
+      if (!isFirstFrameRendered) {
+        isFirstFrameRendered = true;
+        logD("Reporting first rendered frame.");
+        if (rendererEvents != null) {
+          rendererEvents.onFirstFrameRendered();
+        }
+      }
+      if (rotatedFrameWidth != frame.getRotatedWidth()
+          || rotatedFrameHeight != frame.getRotatedHeight()
+          || frameRotation != frame.getRotation()) {
+        logD("Reporting frame resolution changed to " + frame.getBuffer().getWidth() + "x"
+            + frame.getBuffer().getHeight() + " with rotation " + frame.getRotation());
+        if (rendererEvents != null) {
+          rendererEvents.onFrameResolutionChanged(
+              frame.getBuffer().getWidth(), frame.getBuffer().getHeight(), frame.getRotation());
+        }
+        rotatedFrameWidth = frame.getRotatedWidth();
+        rotatedFrameHeight = frame.getRotatedHeight();
+        frameRotation = frame.getRotation();
+        post(() -> {
+          updateSurfaceSize();
+          requestLayout();
+        });
+      }
+    }
+  }
+
   private void logD(String string) {
     Logging.d(TAG, resourceName + string);
   }