content/browser/compositor/gpu_browser_compositor_output_surface.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 CONTENT_BROWSER_COMPOSITOR_GPU_BROWSER_COMPOSITOR_OUTPUT_SURFACE_H_
   6 #define CONTENT_BROWSER_COMPOSITOR_GPU_BROWSER_COMPOSITOR_OUTPUT_SURFACE_H_
   7
   8 #include "base/cancelable_callback.h"
   9 #include "content/browser/compositor/browser_compositor_output_surface.h"
  10 #include "ui/gfx/swap_result.h"
  11
  12 namespace ui {
  13 class CompositorVSyncManager;
  14 }
  15
  16 namespace content {
  17 class CommandBufferProxyImpl;
  18 class BrowserCompositorOverlayCandidateValidator;
  19 class ReflectorTexture;
  20
  21 // Adapts a WebGraphicsContext3DCommandBufferImpl into a
  22 // cc::OutputSurface that also handles vsync parameter updates
  23 // arriving from the GPU process.
  24 class GpuBrowserCompositorOutputSurface
  25     : public BrowserCompositorOutputSurface {
  26  public:
  27   GpuBrowserCompositorOutputSurface(
  28       const scoped_refptr<ContextProviderCommandBuffer>& context,
  29       const scoped_refptr<ui::CompositorVSyncManager>& vsync_manager,
  30       scoped_ptr<BrowserCompositorOverlayCandidateValidator>
  31           overlay_candidate_validator);
  32
  33   ~GpuBrowserCompositorOutputSurface() override;
  34
  35  protected:
  36   // BrowserCompositorOutputSurface:
  37   void OnReflectorChanged() override;
  38
  39   // cc::OutputSurface implementation.
  40   void SwapBuffers(cc::CompositorFrame* frame) override;
  41   bool BindToClient(cc::OutputSurfaceClient* client) override;
  42   bool SurfaceIsSuspendForRecycle() const override;
  43
  44 #if defined(OS_MACOSX)
  45   void OnSurfaceDisplayed() override;
  46   void SetSurfaceSuspendedForRecycle(bool suspended) override;
  47   bool SurfaceShouldNotShowFramesAfterSuspendForRecycle() const override;
  48   enum ShouldShowFramesState {
  49     // Frames that come from the GPU process should appear on-screen.
  50     SHOULD_SHOW_FRAMES,
  51     // The compositor has been suspended. Any frames that come from the GPU
  52     // process are for the pre-suspend content and should not be displayed.
  53     SHOULD_NOT_SHOW_FRAMES_SUSPENDED,
  54     // The compositor has been un-suspended, but has not yet issued a swap
  55     // since being un-suspended, so any frames that come from the GPU process
  56     // are for pre-suspend content and should not be displayed.
  57     SHOULD_NOT_SHOW_FRAMES_NO_SWAP_AFTER_SUSPENDED,
  58   };
  59   ShouldShowFramesState should_show_frames_state_;
  60 #endif
  61
  62   CommandBufferProxyImpl* GetCommandBufferProxy();
  63   virtual void OnSwapBuffersCompleted(
  64       const std::vector<ui::LatencyInfo>& latency_info,
  65       gfx::SwapResult result);
  66
  67   base::CancelableCallback<void(const std::vector<ui::LatencyInfo>&,
  68                                 gfx::SwapResult)>
  69       swap_buffers_completion_callback_;
  70   base::CancelableCallback<void(base::TimeTicks timebase,
  71                                 base::TimeDelta interval)>
  72       update_vsync_parameters_callback_;
  73
  74   scoped_ptr<ReflectorTexture> reflector_texture_;
  75
  76   DISALLOW_COPY_AND_ASSIGN(GpuBrowserCompositorOutputSurface);
  77 };
  78
  79 }  // namespace content
  80
  81 #endif  // CONTENT_BROWSER_COMPOSITOR_GPU_BROWSER_COMPOSITOR_OUTPUT_SURFACE_H_