android_webview/browser/shared_renderer_state.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef ANDROID_WEBVIEW_BROWSER_SHARED_RENDERER_STATE_H_
   6 #define ANDROID_WEBVIEW_BROWSER_SHARED_RENDERER_STATE_H_
   7
   8 #include "android_webview/browser/gl_view_renderer_manager.h"
   9 #include "android_webview/browser/parent_compositor_draw_constraints.h"
  10 #include "base/cancelable_callback.h"
  11 #include "base/memory/weak_ptr.h"
  12 #include "base/single_thread_task_runner.h"
  13 #include "base/synchronization/lock.h"
  14 #include "cc/output/compositor_frame.h"
  15 #include "cc/output/compositor_frame_ack.h"
  16 #include "ui/gfx/geometry/rect.h"
  17 #include "ui/gfx/geometry/vector2d.h"
  18
  19 struct AwDrawGLInfo;
  20
  21 namespace android_webview {
  22
  23 namespace internal {
  24 class RequestDrawGLTracker;
  25 }
  26
  27 class BrowserViewRenderer;
  28 class HardwareRenderer;
  29 class InsideHardwareReleaseReset;
  30
  31 // This class is used to pass data between UI thread and RenderThread.
  32 class SharedRendererState {
  33  public:
  34   SharedRendererState(
  35       const scoped_refptr<base::SingleThreadTaskRunner>& ui_loop,
  36       BrowserViewRenderer* browser_view_renderer);
  37   ~SharedRendererState();
  38
  39   // This function can be called from any thread.
  40   void ClientRequestDrawGL();
  41
  42   // UI thread methods.
  43   void SetScrollOffsetOnUI(gfx::Vector2d scroll_offset);
  44   bool HasCompositorFrameOnUI() const;
  45   void SetCompositorFrameOnUI(scoped_ptr<cc::CompositorFrame> frame,
  46                               bool force_commit);
  47   void InitializeHardwareDrawIfNeededOnUI();
  48   void ReleaseHardwareDrawIfNeededOnUI();
  49   ParentCompositorDrawConstraints GetParentDrawConstraintsOnUI() const;
  50   void SetForceInvalidateOnNextDrawGLOnUI(
  51       bool needs_force_invalidate_on_next_draw_gl);
  52   bool NeedsForceInvalidateOnNextDrawGLOnUI() const;
  53   void SwapReturnedResourcesOnUI(cc::ReturnedResourceArray* resources);
  54   bool ReturnedResourcesEmptyOnUI() const;
  55   scoped_ptr<cc::CompositorFrame> PassUncommittedFrameOnUI();
  56
  57   // RT thread methods.
  58   gfx::Vector2d GetScrollOffsetOnRT();
  59   scoped_ptr<cc::CompositorFrame> PassCompositorFrameOnRT();
  60   bool ForceCommitOnRT() const;
  61   void DrawGL(AwDrawGLInfo* draw_info);
  62   // Returns true if the draw constraints are updated.
  63   bool UpdateDrawConstraintsOnRT(
  64       const ParentCompositorDrawConstraints& parent_draw_constraints);
  65   void PostExternalDrawConstraintsToChildCompositorOnRT(
  66       const ParentCompositorDrawConstraints& parent_draw_constraints);
  67   void DidSkipCommitFrameOnRT();
  68   void InsertReturnedResourcesOnRT(const cc::ReturnedResourceArray& resources);
  69
  70  private:
  71   friend class internal::RequestDrawGLTracker;
  72   class InsideHardwareReleaseReset {
  73    public:
  74     explicit InsideHardwareReleaseReset(
  75         SharedRendererState* shared_renderer_state);
  76     ~InsideHardwareReleaseReset();
  77
  78    private:
  79     SharedRendererState* shared_renderer_state_;
  80   };
  81
  82   // RT thread method.
  83   void DidDrawGLProcess();
  84
  85   // UI thread methods.
  86   void ResetRequestDrawGLCallback();
  87   void ClientRequestDrawGLOnUI();
  88   void UpdateParentDrawConstraintsOnUI();
  89   void DidSkipCommitFrameOnUI();
  90   bool IsInsideHardwareRelease() const;
  91   void SetInsideHardwareRelease(bool inside);
  92
  93   // Accessed by UI thread.
  94   scoped_refptr<base::SingleThreadTaskRunner> ui_loop_;
  95   BrowserViewRenderer* browser_view_renderer_;
  96   base::WeakPtr<SharedRendererState> ui_thread_weak_ptr_;
  97   base::CancelableClosure request_draw_gl_cancelable_closure_;
  98
  99   // Accessed by RT thread.
 100   scoped_ptr<HardwareRenderer> hardware_renderer_;
 101
 102   // This is accessed by both UI and RT now. TODO(hush): move to RT only.
 103   GLViewRendererManager::Key renderer_manager_key_;
 104
 105   // Accessed by both UI and RT thread.
 106   mutable base::Lock lock_;
 107   gfx::Vector2d scroll_offset_;
 108   scoped_ptr<cc::CompositorFrame> compositor_frame_;
 109   bool force_commit_;
 110   bool inside_hardware_release_;
 111   bool needs_force_invalidate_on_next_draw_gl_;
 112   ParentCompositorDrawConstraints parent_draw_constraints_;
 113   cc::ReturnedResourceArray returned_resources_;
 114   base::Closure request_draw_gl_closure_;
 115
 116   base::WeakPtrFactory<SharedRendererState> weak_factory_on_ui_thread_;
 117
 118   DISALLOW_COPY_AND_ASSIGN(SharedRendererState);
 119 };
 120
 121 }  // namespace android_webview
 122
 123 #endif  // ANDROID_WEBVIEW_BROWSER_SHARED_RENDERER_STATE_H_