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 "base/memory/weak_ptr.h"
   9 #include "base/message_loop/message_loop_proxy.h"
  10 #include "base/synchronization/lock.h"
  11 #include "cc/output/compositor_frame.h"
  12 #include "cc/output/compositor_frame_ack.h"
  13 #include "ui/gfx/geometry/rect.h"
  14 #include "ui/gfx/geometry/vector2d.h"
  15
  16 namespace cc {
  17 class CompositorFrameAck;
  18 }
  19
  20 namespace gpu {
  21 class GLInProcessContext;
  22 }
  23
  24 namespace android_webview {
  25
  26 class BrowserViewRendererClient;
  27
  28 // Set by BrowserViewRenderer and read by HardwareRenderer.
  29 struct DrawGLInput {
  30   gfx::Vector2d scroll_offset;
  31   int width;
  32   int height;
  33   cc::CompositorFrame frame;
  34
  35   DrawGLInput();
  36   ~DrawGLInput();
  37 };
  38
  39 // This class is used to pass data between UI thread and RenderThread.
  40 class SharedRendererState {
  41  public:
  42   SharedRendererState(scoped_refptr<base::MessageLoopProxy> ui_loop,
  43                       BrowserViewRendererClient* client);
  44   ~SharedRendererState();
  45
  46   void ClientRequestDrawGL();
  47
  48   void SetDrawGLInput(scoped_ptr<DrawGLInput> input);
  49   scoped_ptr<DrawGLInput> PassDrawGLInput();
  50
  51   // Set by UI and read by RT.
  52   void SetHardwareAllowed(bool allowed);
  53   bool IsHardwareAllowed() const;
  54
  55   void SetSharedContext(gpu::GLInProcessContext* context);
  56   gpu::GLInProcessContext* GetSharedContext() const;
  57
  58   void InsertReturnedResources(const cc::ReturnedResourceArray& resources);
  59   void SwapReturnedResources(cc::ReturnedResourceArray* resources);
  60   bool ReturnedResourcesEmpty() const;
  61
  62  private:
  63   void ClientRequestDrawGLOnUIThread();
  64
  65   scoped_refptr<base::MessageLoopProxy> ui_loop_;
  66   BrowserViewRendererClient* client_on_ui_;
  67   base::WeakPtrFactory<SharedRendererState> weak_factory_on_ui_thread_;
  68   base::WeakPtr<SharedRendererState> ui_thread_weak_ptr_;
  69
  70   // Accessed by both UI and RT thread.
  71   mutable base::Lock lock_;
  72   scoped_ptr<DrawGLInput> draw_gl_input_;
  73   bool hardware_allowed_;
  74   gpu::GLInProcessContext* share_context_;
  75   cc::ReturnedResourceArray returned_resources_;
  76 };
  77
  78 }  // namespace android_webview
  79
  80 #endif  // ANDROID_WEBVIEW_BROWSER_SHARED_RENDERER_STATE_H_