On Sony Bravia devices check for 4k panel.

Documentation: https://developer.sony.com/develop/tvs/android-tv/design-guide/

On API 23 we should also check Display.Mode (where supported).

Issue: #800

library/src/main/java/com/google/android/exoplayer/chunk/VideoFormatSelectorUtil.java

@@ -55,11 +55,9 @@ public final class VideoFormatSelectorUtil {
   public static int[] selectVideoFormatsForDefaultDisplay(Context context,
       List<? extends FormatWrapper> formatWrappers, String[] allowedContainerMimeTypes,
       boolean filterHdFormats) throws DecoderQueryException {
-    WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
-    Display display = windowManager.getDefaultDisplay();
-    Point displaySize = getDisplaySize(display);
+    Point viewportSize = getViewportSize(context);
     return selectVideoFormats(formatWrappers, allowedContainerMimeTypes, filterHdFormats, true,
-        displaySize.x, displaySize.y);
+        viewportSize.x, viewportSize.y);
   }
 
   /**
@@ -184,6 +182,19 @@ public final class VideoFormatSelectorUtil {
     }
   }
 
+  private static Point getViewportSize(Context context) {
+    // Before API 23 the platform Display object does not provide a way to identify Android TVs that
+    // can show 4k resolution in a SurfaceView, so check for supported devices here.
+    // See also https://developer.sony.com/develop/tvs/android-tv/design-guide/.
+    if (Util.MODEL != null && Util.MODEL.startsWith("BRAVIA")
+        && context.getPackageManager().hasSystemFeature("com.sony.dtv.hardware.panel.qfhd")) {
+      return new Point(3840, 2160);
+    }
+
+    WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
+    return getDisplaySize(windowManager.getDefaultDisplay());
+  }
+
   private static Point getDisplaySize(Display display) {
     Point displaySize = new Point();
     if (Util.SDK_INT >= 17) {