src/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/parent_compositor_draw_constraints.h"
   9 #include "base/cancelable_callback.h"
  10 #include "base/memory/weak_ptr.h"
  11 #include "base/message_loop/message_loop_proxy.h"
  12 #include "base/synchronization/lock.h"
  13 #include "cc/output/compositor_frame.h"
  14 #include "cc/output/compositor_frame_ack.h"
  15 #include "ui/gfx/geometry/rect.h"
  16 #include "ui/gfx/geometry/vector2d.h"
  17
  18 namespace cc {
  19 class CompositorFrameAck;
  20 }
  21
  22 namespace gpu {
  23 class GLInProcessContext;
  24 }
  25
  26 namespace android_webview {
  27
  28 namespace internal {
  29 class RequestDrawGLTracker;
  30 }
  31
  32 class BrowserViewRendererClient;
  33 class InsideHardwareReleaseReset;
  34
  35 // Set by BrowserViewRenderer and read by HardwareRenderer.
  36 struct DrawGLInput {
  37   gfx::Vector2d scroll_offset;
  38   int width;
  39   int height;
  40   cc::CompositorFrame frame;
  41
  42   DrawGLInput();
  43   ~DrawGLInput();
  44 };
  45
  46 // This class is used to pass data between UI thread and RenderThread.
  47 class SharedRendererState {
  48  public:
  49   SharedRendererState(scoped_refptr<base::MessageLoopProxy> ui_loop,
  50                       BrowserViewRendererClient* client);
  51   ~SharedRendererState();
  52
  53   void ClientRequestDrawGL();
  54   void DidDrawGLProcess();
  55
  56   void SetDrawGLInput(scoped_ptr<DrawGLInput> input);
  57   scoped_ptr<DrawGLInput> PassDrawGLInput();
  58
  59   bool IsInsideHardwareRelease() const;
  60   void UpdateDrawConstraints(
  61       const ParentCompositorDrawConstraints& parent_draw_constraints);
  62   void PostExternalDrawConstraintsToChildCompositor(
  63       const ParentCompositorDrawConstraints& parent_draw_constraints);
  64
  65   const ParentCompositorDrawConstraints ParentDrawConstraints() const;
  66
  67   void SetSharedContext(gpu::GLInProcessContext* context);
  68   gpu::GLInProcessContext* GetSharedContext() const;
  69
  70   void InsertReturnedResources(const cc::ReturnedResourceArray& resources);
  71   void SwapReturnedResources(cc::ReturnedResourceArray* resources);
  72   bool ReturnedResourcesEmpty() const;
  73
  74  private:
  75   friend class InsideHardwareReleaseReset;
  76   friend class internal::RequestDrawGLTracker;
  77
  78   void ResetRequestDrawGLCallback();
  79   void ClientRequestDrawGLOnUIThread();
  80   void UpdateParentDrawConstraintsOnUIThread();
  81   void SetInsideHardwareRelease(bool inside);
  82
  83   scoped_refptr<base::MessageLoopProxy> ui_loop_;
  84   BrowserViewRendererClient* client_on_ui_;
  85   base::WeakPtrFactory<SharedRendererState> weak_factory_on_ui_thread_;
  86   base::WeakPtr<SharedRendererState> ui_thread_weak_ptr_;
  87   base::CancelableClosure request_draw_gl_cancelable_closure_;
  88
  89   // Accessed by both UI and RT thread.
  90   mutable base::Lock lock_;
  91   scoped_ptr<DrawGLInput> draw_gl_input_;
  92   bool inside_hardware_release_;
  93   ParentCompositorDrawConstraints parent_draw_constraints_;
  94   gpu::GLInProcessContext* share_context_;
  95   cc::ReturnedResourceArray returned_resources_;
  96   base::Closure request_draw_gl_closure_;
  97
  98   DISALLOW_COPY_AND_ASSIGN(SharedRendererState);
  99 };
 100
 101 class InsideHardwareReleaseReset {
 102  public:
 103   explicit InsideHardwareReleaseReset(
 104       SharedRendererState* shared_renderer_state);
 105   ~InsideHardwareReleaseReset();
 106
 107  private:
 108   SharedRendererState* shared_renderer_state_;
 109
 110   DISALLOW_COPY_AND_ASSIGN(InsideHardwareReleaseReset);
 111 };
 112
 113 }  // namespace android_webview
 114
 115 #endif  // ANDROID_WEBVIEW_BROWSER_SHARED_RENDERER_STATE_H_