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