Change exo::SurfaceFactoryOwner to exo::ExoCompositorFrameSink

components/exo/compositor_frame_sink_holder.h

+// Copyright 2016 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 COMPONENTS_EXO_COMPOSITOR_FRAME_SINK_HOLDER_H_
+#define COMPONENTS_EXO_COMPOSITOR_FRAME_SINK_HOLDER_H_
+
+#include <list>
+#include <map>
+#include <memory>
+
+#include "cc/ipc/mojo_compositor_frame_sink.mojom.h"
+#include "cc/resources/single_release_callback.h"
+#include "cc/resources/transferable_resource.h"
+#include "cc/scheduler/begin_frame_source.h"
+#include "components/exo/compositor_frame_sink.h"
+#include "components/exo/surface_observer.h"
+#include "mojo/public/cpp/bindings/binding.h"
+
+namespace exo {
+class Surface;
+
+// This class talks to MojoCompositorFrameSink and keeps track of references to
+// the contents of Buffers. It's keeped alive by references from
+// release_callbacks_. It's destroyed when its owning Surface is destroyed and
+// the last outstanding release callback is called.
+class CompositorFrameSinkHolder
+    : public base::RefCounted<CompositorFrameSinkHolder>,
+      public cc::ExternalBeginFrameSourceClient,
+      public cc::mojom::MojoCompositorFrameSinkClient,
+      public cc::BeginFrameObserver,
+      public SurfaceObserver {
+ public:
+  CompositorFrameSinkHolder(
+      Surface* surface,
+      cc::mojom::MojoCompositorFrameSinkPtr mojo_compositor_frame_sink,
+      std::unique_ptr<CompositorFrameSink> frame_sink,
+      cc::mojom::MojoCompositorFrameSinkClientRequest request);
+
+  bool HasReleaseCallbackForResource(cc::ResourceId id);
+  void AddResourceReleaseCallback(
+      cc::ResourceId id,
+      std::unique_ptr<cc::SingleReleaseCallback> callback);
+
+  CompositorFrameSink* GetCompositorFrameSink() { return frame_sink_.get(); }
+
+  base::WeakPtr<CompositorFrameSinkHolder> GetWeakPtr() {
+    return weak_factory_.GetWeakPtr();
+  }
+
+  using FrameCallback = base::Callback<void(base::TimeTicks frame_time)>;
+  void ActivateFrameCallbacks(std::list<FrameCallback>* frame_callbacks);
+  void CancelFrameCallbacks();
+
+  void SetNeedsBeginFrame(bool needs_begin_frame);
+
+  void Satisfy(const cc::SurfaceSequence& sequence);
+  void Require(const cc::SurfaceId& id, const cc::SurfaceSequence& sequence);
+
+  // Overridden from cc::mojom::MojoCompositorFrameSinkClient:
+  void DidReceiveCompositorFrameAck() override;
+  void OnBeginFrame(const cc::BeginFrameArgs& args) override;
+  void ReclaimResources(const cc::ReturnedResourceArray& resources) override;
+  void WillDrawSurface() override;
+
+  // Overridden from cc::BeginFrameObserver:
+  const cc::BeginFrameArgs& LastUsedBeginFrameArgs() const override;
+  void OnBeginFrameSourcePausedChanged(bool paused) override;
+
+  // Overridden from cc::ExternalBeginFrameSouceClient:
+  void OnNeedsBeginFrames(bool needs_begin_frames) override;
+
+  // Overridden from SurfaceObserver:
+  void OnSurfaceDestroying(Surface* surface) override;
+
+ private:
+  friend class base::RefCounted<CompositorFrameSinkHolder>;
+
+  ~CompositorFrameSinkHolder() override;
+
+  void UpdateNeedsBeginFrame();
+
+  using ResourceReleaseCallbackMap =
+      std::map<int,
+               std::pair<scoped_refptr<CompositorFrameSinkHolder>,
+                         std::unique_ptr<cc::SingleReleaseCallback>>>;
+  ResourceReleaseCallbackMap release_callbacks_;
+
+  Surface* surface_;
+  std::unique_ptr<CompositorFrameSink> frame_sink_;
+  cc::mojom::MojoCompositorFrameSinkPtr mojo_compositor_frame_sink_;
+
+  // Each FrameCallback holds a reference to the CompositorFrameSinkHolder
+  // itself to keep it alive. Running and erasing the callbacks might result in
+  // the instance being destroyed. Therefore, we should not access any member
+  // variables after running and erasing the callbacks.
+  std::list<FrameCallback> active_frame_callbacks_;
+  std::unique_ptr<cc::ExternalBeginFrameSource> begin_frame_source_;
+  bool needs_begin_frame_ = false;
+  cc::BeginFrameArgs last_begin_frame_args_;
+  mojo::Binding<cc::mojom::MojoCompositorFrameSinkClient> binding_;
+
+  base::WeakPtrFactory<CompositorFrameSinkHolder> weak_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(CompositorFrameSinkHolder);
+};
+
+}  // namespace exo
+
+#endif  // COMPONENTS_EXO_COMPOSITOR_FRAME_SINK_HOLDER_H_