Rotation into Video Layer + Content Transform

cc/layers/video_layer.cc

 // Copyright 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/layers/video_layer.h"
 
 #include "cc/layers/video_layer_impl.h"
 
 namespace cc {
 
@@ skipping 18 matching lines @@
   // Video layer doesn't update any resources from the main thread side,
   // but repaint rects need to be sent to the VideoLayerImpl via commit.
   //
   // This is the inefficient legacy redraw path for videos.  It's better to
   // communicate this directly to the VideoLayerImpl.
   updated |= !update_rect_.IsEmpty();
 
   return updated;
 }
 
+void VideoLayer::PushPropertiesTo(LayerImpl* impl) {
+  Layer::PushPropertiesTo(impl);
+  gfx::Transform transform = impl->transform();
+  bool transform_is_invertible = impl->transform_is_invertible();
+  gfx::Size content_bounds = impl->content_bounds();
+  gfx::Size bounds = impl->bounds();
+
+  // As blink is provided the bounds of the video layer post rotation
+  // for laying out the page, video layer impl's bounds must be transposed
+  // for 90 or 270 degree rotations.
+  switch (video_rotation_) {
+    case media::VIDEO_ROTATION_90:
+      transform.Rotate(90.0);
+      transform.Translate(0.0, -content_bounds.width());
+      content_bounds =
+          gfx::Size(content_bounds.height(), content_bounds.width());
+      bounds = gfx::Size(bounds.height(), bounds.width());
+      break;
+    case media::VIDEO_ROTATION_180:
+      transform.Rotate(180.0);
+      transform.Translate(-content_bounds.width(), -content_bounds.height());
+      break;
+    case media::VIDEO_ROTATION_270:
+      transform.Rotate(270.0);
+      transform.Translate(-content_bounds.height(), 0);
+      content_bounds =
+          gfx::Size(content_bounds.height(), content_bounds.width());
+      bounds = gfx::Size(bounds.height(), bounds.width());
+    case media::VIDEO_ROTATION_0:
+      break;
+  }
+
+  impl->SetBounds(bounds);
+  impl->draw_properties().content_bounds = content_bounds;
+  impl->SetTransformAndInvertibility(transform, transform_is_invertible);
+}
+
 }  // namespace cc