Fork cc::OutputSurface into cc::CompositorFrameSink.

content/renderer/android/synchronous_compositor_output_surface.h

-// Copyright 2013 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_RENDERER_ANDROID_SYNCHRONOUS_COMPOSITOR_OUTPUT_SURFACE_H_
-#define CONTENT_RENDERER_ANDROID_SYNCHRONOUS_COMPOSITOR_OUTPUT_SURFACE_H_
-
-#include <stddef.h>
-
-#include <memory>
-
-#include "base/callback.h"
-#include "base/cancelable_callback.h"
-#include "base/compiler_specific.h"
-#include "base/macros.h"
-#include "base/memory/ref_counted.h"
-#include "base/threading/thread_checker.h"
-#include "cc/output/compositor_frame.h"
-#include "cc/output/managed_memory_policy.h"
-#include "cc/output/output_surface.h"
-#include "cc/surfaces/display_client.h"
-#include "cc/surfaces/surface_factory_client.h"
-#include "ipc/ipc_message.h"
-#include "ui/gfx/transform.h"
-
-namespace cc {
-class ContextProvider;
-class CompositorFrameMetadata;
-class Display;
-class SurfaceFactory;
-class SurfaceIdAllocator;
-class SurfaceManager;
-}
-
-namespace IPC {
-class Message;
-class Sender;
-}
-
-namespace content {
-
-class FrameSwapMessageQueue;
-class SynchronousCompositorRegistry;
-class WebGraphicsContext3DCommandBufferImpl;
-
-class SynchronousCompositorOutputSurfaceClient {
- public:
-  virtual void DidActivatePendingTree() = 0;
-  virtual void Invalidate() = 0;
-  virtual void SwapBuffers(uint32_t output_surface_id,
-                           cc::CompositorFrame frame) = 0;
-
- protected:
-  virtual ~SynchronousCompositorOutputSurfaceClient() {}
-};
-
-// Specialization of the output surface that adapts it to implement the
-// content::SynchronousCompositor public API. This class effects an "inversion
-// of control" - enabling drawing to be  orchestrated by the embedding
-// layer, instead of driven by the compositor internals - hence it holds two
-// 'client' pointers (|client_| in the OutputSurface baseclass and
-// |delegate_|) which represent the consumers of the two roles in plays.
-// This class can be created only on the main thread, but then becomes pinned
-// to a fixed thread when BindToClient is called.
-class SynchronousCompositorOutputSurface
-    : NON_EXPORTED_BASE(public cc::OutputSurface),
-      public cc::SurfaceFactoryClient {
- public:
-  SynchronousCompositorOutputSurface(
-      scoped_refptr<cc::ContextProvider> context_provider,
-      scoped_refptr<cc::ContextProvider> worker_context_provider,
-      int routing_id,
-      uint32_t output_surface_id,
-      std::unique_ptr<cc::BeginFrameSource> begin_frame_source,
-      SynchronousCompositorRegistry* registry,
-      scoped_refptr<FrameSwapMessageQueue> frame_swap_message_queue);
-  ~SynchronousCompositorOutputSurface() override;
-
-  void SetSyncClient(SynchronousCompositorOutputSurfaceClient* compositor);
-  bool OnMessageReceived(const IPC::Message& message);
-
-  // OutputSurface.
-  bool BindToClient(cc::OutputSurfaceClient* surface_client) override;
-  void DetachFromClient() override;
-  void Reshape(const gfx::Size& size,
-               float scale_factor,
-               const gfx::ColorSpace& color_space,
-               bool has_alpha) override;
-  void SwapBuffers(cc::CompositorFrame frame) override;
-  void Invalidate() override;
-  void BindFramebuffer() override;
-  uint32_t GetFramebufferCopyTextureFormat() override;
-
-  // Partial SynchronousCompositor API implementation.
-  void DemandDrawHw(const gfx::Size& viewport_size,
-                    const gfx::Rect& viewport_rect_for_tile_priority,
-                    const gfx::Transform& transform_for_tile_priority);
-  void DemandDrawSw(SkCanvas* canvas);
-
-  // SurfaceFactoryClient implementation.
-  void ReturnResources(const cc::ReturnedResourceArray& resources) override;
-  void SetBeginFrameSource(cc::BeginFrameSource* begin_frame_source) override;
-
- private:
-  class SoftwareOutputSurface;
-
-  void InvokeComposite(const gfx::Transform& transform,
-                       const gfx::Rect& viewport);
-  bool Send(IPC::Message* message);
-  void DidActivatePendingTree();
-  void DeliverMessages();
-  bool CalledOnValidThread() const;
-
-  void CancelFallbackTick();
-  void FallbackTickFired();
-
-  // IPC handlers.
-  void SetMemoryPolicy(size_t bytes_limit);
-  void OnReclaimResources(uint32_t output_surface_id,
-                          const cc::ReturnedResourceArray& resources);
-
-  const int routing_id_;
-  const uint32_t output_surface_id_;
-  SynchronousCompositorRegistry* const registry_;  // Not owned.
-  IPC::Sender* const sender_;  // Not owned.
-  bool registered_ = false;
-
-  // Not owned.
-  SynchronousCompositorOutputSurfaceClient* sync_client_ = nullptr;
-
-  // Only valid (non-NULL) during a DemandDrawSw() call.
-  SkCanvas* current_sw_canvas_ = nullptr;
-
-  cc::ManagedMemoryPolicy memory_policy_;
-  bool in_software_draw_ = false;
-  bool did_swap_ = false;
-  scoped_refptr<FrameSwapMessageQueue> frame_swap_message_queue_;
-
-  base::CancelableClosure fallback_tick_;
-  bool fallback_tick_pending_ = false;
-  bool fallback_tick_running_ = false;
-
-  class StubDisplayClient : public cc::DisplayClient {
-    void DisplayOutputSurfaceLost() override {}
-    void DisplayWillDrawAndSwap(
-        bool will_draw_and_swap,
-        const cc::RenderPassList& render_passes) override {}
-    void DisplayDidDrawAndSwap() override {}
-  };
-
-  // TODO(danakj): These don't to be stored in unique_ptrs when OutputSurface
-  // is owned/destroyed on the compositor thread.
-  std::unique_ptr<cc::SurfaceManager> surface_manager_;
-  std::unique_ptr<cc::SurfaceIdAllocator> surface_id_allocator_;
-  cc::SurfaceId delegated_surface_id_;
-  // Uses surface_manager_.
-  std::unique_ptr<cc::SurfaceFactory> surface_factory_;
-  StubDisplayClient display_client_;
-  // Uses surface_manager_.
-  std::unique_ptr<cc::Display> display_;
-  // Owned by |display_|.
-  SoftwareOutputSurface* software_output_surface_ = nullptr;
-  std::unique_ptr<cc::BeginFrameSource> begin_frame_source_;
-
-  base::ThreadChecker thread_checker_;
-
-  DISALLOW_COPY_AND_ASSIGN(SynchronousCompositorOutputSurface);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_RENDERER_ANDROID_SYNCHRONOUS_COMPOSITOR_OUTPUT_SURFACE_H_