Hide the shutter view when no video is being rendered.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=129849825

demo/src/main/java/com/google/android/exoplayer2/demo/PlayerActivity.java

@@ -456,7 +456,7 @@ public class PlayerActivity extends Activity implements OnKeyListener, OnTouchLi
   }
 
   @Override
-  public void onDrawnToSurface(Surface surface) {
+  public void onRenderedFirstFrame(Surface surface) {
     shutterView.setVisibility(View.GONE);
   }
 
@@ -471,6 +471,17 @@ public class PlayerActivity extends Activity implements OnKeyListener, OnTouchLi
     if (trackInfo.hasOnlyUnplayableTracks(C.TRACK_TYPE_AUDIO)) {
       showToast(R.string.error_unsupported_audio);
     }
+    boolean renderingVideo = false;
+    for (int i = 0; i < trackInfo.rendererCount; i++) {
+      if (player.getRendererType(i) == C.TRACK_TYPE_VIDEO
+          && trackInfo.getTrackSelection(i) != null) {
+        renderingVideo = true;
+        break;
+      }
+    }
+    if (!renderingVideo) {
+      shutterView.setVisibility(View.VISIBLE);
+    }
   }
 
   // User controls

extensions/vp9/src/main/java/com/google/android/exoplayer2/ext/vp9/LibvpxVideoRenderer.java

@@ -67,7 +67,6 @@ public final class LibvpxVideoRenderer extends BaseRenderer {
   private VpxOutputBuffer nextOutputBuffer;
 
   private Bitmap bitmap;
-  private boolean drawnToSurface;
   private boolean renderedFirstFrame;
   private long joiningDeadlineMs;
   private Surface surface;
@@ -234,13 +233,8 @@ public final class LibvpxVideoRenderer extends BaseRenderer {
 
     // If we have not rendered any frame so far (either initially or immediately following a seek),
     // render one frame irrespective of the state or current position.
-    if (!renderedFirstFrame) {
-      renderBuffer();
-      renderedFirstFrame = true;
-      return false;
-    }
-
-    if (getState() == STATE_STARTED && outputBuffer.timeUs <= positionUs + 30000) {
+    if (!renderedFirstFrame
+        || (getState() == STATE_STARTED && outputBuffer.timeUs <= positionUs + 30000)) {
       renderBuffer();
     }
     return false;
@@ -252,14 +246,18 @@ public final class LibvpxVideoRenderer extends BaseRenderer {
     maybeNotifyVideoSizeChanged(outputBuffer.width, outputBuffer.height);
     if (outputBuffer.mode == VpxDecoder.OUTPUT_MODE_RGB && surface != null) {
       renderRgbFrame(outputBuffer, scaleToFit);
-      if (!drawnToSurface) {
-        drawnToSurface = true;
-        eventDispatcher.drawnToSurface(surface);
+      if (!renderedFirstFrame) {
+        renderedFirstFrame = true;
+        eventDispatcher.renderedFirstFrame(surface);
       }
       outputBuffer.release();
     } else if (outputBuffer.mode == VpxDecoder.OUTPUT_MODE_YUV && outputBufferRenderer != null) {
       // The renderer will release the buffer.
       outputBufferRenderer.setOutputBuffer(outputBuffer);
+      if (!renderedFirstFrame) {
+        renderedFirstFrame = true;
+        eventDispatcher.renderedFirstFrame(null);
+      }
     } else {
       outputBuffer.release();
     }
@@ -433,11 +431,11 @@ public final class LibvpxVideoRenderer extends BaseRenderer {
     if (this.surface == surface) {
       return;
     }
+    renderedFirstFrame = false;
     this.surface = surface;
     outputBufferRenderer = null;
     outputMode = (surface != null) ? VpxDecoder.OUTPUT_MODE_RGB : VpxDecoder.OUTPUT_MODE_NONE;
     updateDecoder();
-    drawnToSurface = false;
   }
 
   private void setOutputBufferRenderer(VpxOutputBufferRenderer outputBufferRenderer) {

library/src/main/java/com/google/android/exoplayer2/SimpleExoPlayer.java

@@ -59,7 +59,7 @@ public final class SimpleExoPlayer implements ExoPlayer {
   public interface VideoListener {
     void onVideoSizeChanged(int width, int height, int unappliedRotationDegrees,
         float pixelWidthHeightRatio);
-    void onDrawnToSurface(Surface surface);
+    void onRenderedFirstFrame(Surface surface);
   }
 
   /**
@@ -565,9 +565,9 @@ public final class SimpleExoPlayer implements ExoPlayer {
     }
 
     @Override
-    public void onDrawnToSurface(Surface surface) {
+    public void onRenderedFirstFrame(Surface surface) {
       if (videoListener != null) {
-        videoListener.onDrawnToSurface(surface);
+        videoListener.onRenderedFirstFrame(surface);
       }
     }
 

library/src/main/java/com/google/android/exoplayer2/video/MediaCodecVideoRenderer.java

@@ -63,7 +63,6 @@ public class MediaCodecVideoRenderer extends MediaCodecRenderer {
   private CodecMaxValues codecMaxValues;
 
   private Surface surface;
-  private boolean reportedDrawnToSurface;
   private boolean renderedFirstFrame;
   private long joiningDeadlineMs;
   private long droppedFrameAccumulationStartTimeMs;
@@ -295,8 +294,8 @@ public class MediaCodecVideoRenderer extends MediaCodecRenderer {
     if (this.surface == surface) {
       return;
     }
+    renderedFirstFrame = false;
     this.surface = surface;
-    this.reportedDrawnToSurface = false;
     int state = getState();
     if (state == STATE_ENABLED || state == STATE_STARTED) {
       releaseCodec();
@@ -467,8 +466,10 @@ public class MediaCodecVideoRenderer extends MediaCodecRenderer {
     TraceUtil.endSection();
     decoderCounters.renderedOutputBufferCount++;
     consecutiveDroppedFrameCount = 0;
-    renderedFirstFrame = true;
-    maybeNotifyDrawnToSurface();
+    if (!renderedFirstFrame) {
+      renderedFirstFrame = true;
+      eventDispatcher.renderedFirstFrame(surface);
+    }
   }
 
   @TargetApi(21)
@@ -479,8 +480,10 @@ public class MediaCodecVideoRenderer extends MediaCodecRenderer {
     TraceUtil.endSection();
     decoderCounters.renderedOutputBufferCount++;
     consecutiveDroppedFrameCount = 0;
-    renderedFirstFrame = true;
-    maybeNotifyDrawnToSurface();
+    if (!renderedFirstFrame) {
+      renderedFirstFrame = true;
+      eventDispatcher.renderedFirstFrame(surface);
+    }
   }
 
   @SuppressLint("InlinedApi")
@@ -578,13 +581,6 @@ public class MediaCodecVideoRenderer extends MediaCodecRenderer {
     return (maxPixels * 3) / (2 * minCompressionRatio);
   }
 
-  private void maybeNotifyDrawnToSurface() {
-    if (!reportedDrawnToSurface) {
-      eventDispatcher.drawnToSurface(surface);
-      reportedDrawnToSurface = true;
-    }
-  }
-
   private void maybeNotifyVideoSizeChanged() {
     if (lastReportedWidth != currentWidth || lastReportedHeight != currentHeight
         || lastReportedUnappliedRotationDegrees != currentUnappliedRotationDegrees

library/src/main/java/com/google/android/exoplayer2/video/VideoRendererEventListener.java

@@ -88,12 +88,13 @@ public interface VideoRendererEventListener {
       float pixelWidthHeightRatio);
 
   /**
-   * Called when a frame is rendered to a surface for the first time following that surface
-   * having been set as the target for the renderer.
+   * Called when a frame is rendered for the first time since setting the surface, and when a frame
+   * is rendered for the first time since the renderer was reset.
    *
-   * @param surface The surface to which a first frame has been rendered.
+   * @param surface The {@link Surface} to which a first frame has been rendered, or {@code null} if
+   *     the renderer renders to something that isn't a {@link Surface}.
    */
-  void onDrawnToSurface(Surface surface);
+  void onRenderedFirstFrame(Surface surface);
 
   /**
    * Called when the renderer is disabled.
@@ -195,14 +196,14 @@ public interface VideoRendererEventListener {
     }
 
     /**
-     * Invokes {@link VideoRendererEventListener#onDrawnToSurface(Surface)}.
+     * Invokes {@link VideoRendererEventListener#onRenderedFirstFrame(Surface)}.
      */
-    public void drawnToSurface(final Surface surface) {
+    public void renderedFirstFrame(final Surface surface) {
       if (listener != null) {
         handler.post(new Runnable()  {
           @Override
           public void run() {
-            listener.onDrawnToSurface(surface);
+            listener.onRenderedFirstFrame(surface);
           }
         });
       }