Use Surfaces to hold delegated renderer contents.

content/browser/compositor/delegated_frame_layer_host.h

 // Copyright 2014 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.
 
-#ifndef CONTENT_BROWSER_COMPOSITOR_DELEGATED_FRAME_HOST_H_
-#define CONTENT_BROWSER_COMPOSITOR_DELEGATED_FRAME_HOST_H_
+#ifndef CONTENT_BROWSER_COMPOSITOR_DELEGATED_FRAME_LAYER_HOST_H_
+#define CONTENT_BROWSER_COMPOSITOR_DELEGATED_FRAME_LAYER_HOST_H_
 
 #include "cc/layers/delegated_frame_provider.h"
 #include "cc/layers/delegated_frame_resource_collection.h"
 #include "cc/output/copy_output_result.h"
+#include "content/browser/compositor/delegated_frame_host.h"
 #include "content/browser/compositor/image_transport_factory.h"
 #include "content/browser/compositor/owned_mailbox.h"
 #include "content/browser/renderer_host/delegated_frame_evictor.h"
 #include "content/browser/renderer_host/dip_util.h"
 #include "content/browser/renderer_host/render_widget_host_impl.h"
 #include "content/public/browser/render_process_host.h"
 #include "ui/compositor/compositor.h"
 #include "ui/compositor/compositor_observer.h"
 #include "ui/compositor/compositor_vsync_manager.h"
 #include "ui/compositor/layer.h"
 #include "ui/compositor/layer_owner_delegate.h"
 #include "ui/gfx/rect_conversions.h"
 
-namespace media {
-class VideoFrame;
-}
-
 namespace content {
 
-class DelegatedFrameHost;
 class ReadbackYUVInterface;
-class RenderWidgetHostViewFrameSubscriber;
-class RenderWidgetHostImpl;
-class ResizeLock;
 
-// The DelegatedFrameHostClient is the interface from the DelegatedFrameHost,
-// which manages delegated frames, and the ui::Compositor being used to
-// display them.
-class CONTENT_EXPORT DelegatedFrameHostClient {
- public:
-  virtual ui::Compositor* GetCompositor() const = 0;
-  virtual ui::Layer* GetLayer() = 0;
-  virtual RenderWidgetHostImpl* GetHost() = 0;
-  virtual void SchedulePaintInRect(const gfx::Rect& damage_rect_in_dip) = 0;
-  virtual bool IsVisible() = 0;
-  virtual scoped_ptr<ResizeLock> CreateResizeLock(
-      bool defer_compositor_lock) = 0;
-  virtual gfx::Size DesiredFrameSize() = 0;
-
-  // TODO(ccameron): It is likely that at least one of these two functions is
-  // redundant. Find which one, and delete it.
-  virtual float CurrentDeviceScaleFactor() = 0;
-  virtual gfx::Size ConvertViewSizeToPixel(const gfx::Size& size) = 0;
-
-  // These are to be overridden for testing only.
-  // TODO(ccameron): This is convoluted. Make the tests that need to override
-  // these functions test DelegatedFrameHost directly (rather than do it
-  // through RenderWidgetHostViewAura).
-  virtual DelegatedFrameHost* GetDelegatedFrameHost() const = 0;
-  virtual bool ShouldCreateResizeLock();
-  virtual void RequestCopyOfOutput(scoped_ptr<cc::CopyOutputRequest> request);
-};
-
-// The DelegatedFrameHost is used to host all of the RenderWidgetHostView state
-// and functionality that is associated with delegated frames being sent from
-// the RenderWidget. The DelegatedFrameHost will push these changes through to
-// the ui::Compositor associated with its DelegatedFrameHostClient.
-class CONTENT_EXPORT DelegatedFrameHost
-    : public ui::CompositorObserver,
+class CONTENT_EXPORT DelegatedFrameLayerHost
+    : public DelegatedFrameHost,
+      public ui::CompositorObserver,
       public ui::CompositorVSyncManager::Observer,
       public ui::LayerOwnerDelegate,
       public ImageTransportFactoryObserver,
       public DelegatedFrameEvictorClient,
       public cc::DelegatedFrameResourceCollectionClient,
-      public base::SupportsWeakPtr<DelegatedFrameHost> {
+      public base::SupportsWeakPtr<DelegatedFrameLayerHost> {
  public:
-  DelegatedFrameHost(DelegatedFrameHostClient* client);
-  virtual ~DelegatedFrameHost();
-
-  bool CanCopyToBitmap() const;
+  DelegatedFrameLayerHost(DelegatedFrameHostClient* client);
+  virtual ~DelegatedFrameLayerHost();
 
   // Public interface exposed to RenderWidgetHostView.
-  void SwapDelegatedFrame(
+  virtual bool CanCopyToBitmap() const OVERRIDE;
+  virtual void SwapDelegatedFrame(
       uint32 output_surface_id,
       scoped_ptr<cc::DelegatedFrameData> frame_data,
       float frame_device_scale_factor,
-      const std::vector<ui::LatencyInfo>& latency_info);
-  void WasHidden();
-  void WasShown();
-  void WasResized();
-  gfx::Size GetRequestedRendererSize() const;
-  void AddedToWindow();
-  void RemovingFromWindow();
-  void CopyFromCompositingSurface(
+      const std::vector<ui::LatencyInfo>& latency_info) OVERRIDE;
+  virtual void WasHidden() OVERRIDE;
+  virtual void WasShown() OVERRIDE;
+  virtual void WasResized() OVERRIDE;
+  virtual gfx::Size GetRequestedRendererSize() const OVERRIDE;
+  virtual void AddedToWindow() OVERRIDE;
+  virtual void RemovingFromWindow() OVERRIDE;
+  virtual void CopyFromCompositingSurface(
       const gfx::Rect& src_subrect,
       const gfx::Size& dst_size,
       const base::Callback<void(bool, const SkBitmap&)>& callback,
-      const SkColorType color_type);
-  void CopyFromCompositingSurfaceToVideoFrame(
+      const SkColorType color_type) OVERRIDE;
+  virtual void CopyFromCompositingSurfaceToVideoFrame(
       const gfx::Rect& src_subrect,
       const scoped_refptr<media::VideoFrame>& target,
-      const base::Callback<void(bool)>& callback);
-  bool CanCopyToVideoFrame() const;
-  bool CanSubscribeFrame() const;
-  void BeginFrameSubscription(
-      scoped_ptr<RenderWidgetHostViewFrameSubscriber> subscriber);
-  void EndFrameSubscription();
-  bool HasFrameSubscriber() const { return frame_subscriber_; }
+      const base::Callback<void(bool)>& callback) OVERRIDE;
+  virtual bool CanCopyToVideoFrame() const OVERRIDE;
+  virtual bool CanSubscribeFrame() const OVERRIDE;
+  virtual void BeginFrameSubscription(
+      scoped_ptr<RenderWidgetHostViewFrameSubscriber> subscriber) OVERRIDE;
+  virtual void EndFrameSubscription() OVERRIDE;
+  virtual bool HasFrameSubscriber() const OVERRIDE;
+  virtual void SetLayerOwner(ui::LayerOwner* layer_owner) OVERRIDE;
 
-  // Exposed for tests.
-  cc::DelegatedFrameProvider* FrameProviderForTesting() const {
-    return frame_provider_.get();
-  }
-  void OnCompositingDidCommitForTesting(ui::Compositor* compositor) {
-    OnCompositingDidCommit(compositor);
-  }
-  bool ShouldCreateResizeLockForTesting() { return ShouldCreateResizeLock(); }
+  virtual cc::DelegatedFrameProvider* FrameProviderForTesting() const OVERRIDE;
+  virtual void OnCompositingDidCommitForTesting(
+      ui::Compositor* compositor) OVERRIDE;
 
  private:
   friend class DelegatedFrameHostClient;
   FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest,
                            SkippedDelegatedFrames);
   FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest,
                            DiscardDelegatedFramesWithLocking);
   FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraCopyRequestTest,
                            DestroyedAfterCopyRequest);
 
   RenderWidgetHostViewFrameSubscriber* frame_subscriber() const {
     return frame_subscriber_.get();
   }
-  bool ShouldCreateResizeLock();
-  void RequestCopyOfOutput(scoped_ptr<cc::CopyOutputRequest> request);
+  virtual bool ShouldCreateResizeLock() OVERRIDE;
+  virtual void RequestCopyOfOutput(
+      scoped_ptr<cc::CopyOutputRequest> request) OVERRIDE;
 
-  void LockResources();
-  void UnlockResources();
+  virtual void LockResources() OVERRIDE;
+  virtual void UnlockResources() OVERRIDE;
 
   // Overridden from ui::CompositorObserver:
   virtual void OnCompositingDidCommit(ui::Compositor* compositor) OVERRIDE;
   virtual void OnCompositingStarted(ui::Compositor* compositor,
                                     base::TimeTicks start_time) OVERRIDE;
   virtual void OnCompositingEnded(ui::Compositor* compositor) OVERRIDE;
   virtual void OnCompositingAborted(ui::Compositor* compositor) OVERRIDE;
   virtual void OnCompositingLockStateChanged(
       ui::Compositor* compositor) OVERRIDE;
 
@@ skipping 34 matching lines @@
       const gfx::Size& dst_size_in_pixel,
       const SkColorType color_type,
       const base::Callback<void(bool, const SkBitmap&)>& callback,
       scoped_ptr<cc::CopyOutputResult> result);
   static void PrepareBitmapCopyOutputResult(
       const gfx::Size& dst_size_in_pixel,
       const SkColorType color_type,
       const base::Callback<void(bool, const SkBitmap&)>& callback,
       scoped_ptr<cc::CopyOutputResult> result);
   static void CopyFromCompositingSurfaceHasResultForVideo(
-      base::WeakPtr<DelegatedFrameHost> rwhva,
+      base::WeakPtr<DelegatedFrameLayerHost> rwhva,
       scoped_refptr<OwnedMailbox> subscriber_texture,
       scoped_refptr<media::VideoFrame> video_frame,
       const base::Callback<void(bool)>& callback,
       scoped_ptr<cc::CopyOutputResult> result);
   static void CopyFromCompositingSurfaceFinishedForVideo(
-      base::WeakPtr<DelegatedFrameHost> rwhva,
+      base::WeakPtr<DelegatedFrameLayerHost> rwhva,
       const base::Callback<void(bool)>& callback,
       scoped_refptr<OwnedMailbox> subscriber_texture,
       scoped_ptr<cc::SingleReleaseCallback> release_callback,
       bool result);
   static void ReturnSubscriberTexture(
-      base::WeakPtr<DelegatedFrameHost> rwhva,
+      base::WeakPtr<DelegatedFrameLayerHost> rwhva,
       scoped_refptr<OwnedMailbox> subscriber_texture,
       uint32 sync_point);
 
   void SendDelegatedFrameAck(uint32 output_surface_id);
   void SendReturnedDelegatedResources(uint32 output_surface_id);
 
   // DelegatedFrameEvictorClient implementation.
   virtual void EvictDelegatedFrame() OVERRIDE;
 
   // cc::DelegatedFrameProviderClient implementation.
@@ skipping 55 matching lines @@
   };
   CanLockCompositorState can_lock_compositor_;
 
   base::TimeTicks last_draw_ended_;
 
   // Subscriber that listens to frame presentation events.
   scoped_ptr<RenderWidgetHostViewFrameSubscriber> frame_subscriber_;
   std::vector<scoped_refptr<OwnedMailbox> > idle_frame_subscriber_textures_;
 
   // YUV readback pipeline.
-  scoped_ptr<content::ReadbackYUVInterface>
-      yuv_readback_pipeline_;
+  scoped_ptr<content::ReadbackYUVInterface> yuv_readback_pipeline_;
 
   scoped_ptr<DelegatedFrameEvictor> delegated_frame_evictor_;
 };
 
 }  // namespace content
 
-#endif  // CONTENT_BROWSER_COMPOSITOR_DELEGATED_FRAME_HOST_H_
+#endif  // CONTENT_BROWSER_COMPOSITOR_DELEGATED_FRAME_LAYER_HOST_H_