content/common/gpu/image_transport_surface_overlay_mac.h

   1 // Copyright 2015 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_COMMON_GPU_IMAGE_TRANSPORT_SURFACE_OVERLAY_MAC_H_
   6 #define CONTENT_COMMON_GPU_IMAGE_TRANSPORT_SURFACE_OVERLAY_MAC_H_
   7
   8 #include <deque>
   9
  10 #include "base/memory/linked_ptr.h"
  11 #import "base/mac/scoped_nsobject.h"
  12 #include "content/common/gpu/gpu_command_buffer_stub.h"
  13 #include "content/common/gpu/image_transport_surface.h"
  14 #include "ui/accelerated_widget_mac/display_link_mac.h"
  15 #include "ui/gl/gl_surface.h"
  16
  17 @class CAContext;
  18 @class CALayer;
  19
  20 namespace content {
  21
  22 class ImageTransportSurfaceOverlayMac : public gfx::GLSurface,
  23                                         public ImageTransportSurface {
  24  public:
  25   ImageTransportSurfaceOverlayMac(GpuChannelManager* manager,
  26                                   GpuCommandBufferStub* stub,
  27                                   gfx::PluginWindowHandle handle);
  28
  29   // GLSurface implementation
  30   bool Initialize() override;
  31   void Destroy() override;
  32   bool IsOffscreen() override;
  33   gfx::SwapResult SwapBuffers() override;
  34   gfx::SwapResult PostSubBuffer(int x, int y, int width, int height) override;
  35   bool SupportsPostSubBuffer() override;
  36   gfx::Size GetSize() override;
  37   void* GetHandle() override;
  38
  39   bool ScheduleOverlayPlane(int z_order,
  40                             gfx::OverlayTransform transform,
  41                             gfx::GLImage* image,
  42                             const gfx::Rect& bounds_rect,
  43                             const gfx::RectF& crop_rect) override;
  44   bool IsSurfaceless() const override;
  45
  46   // ImageTransportSurface implementation
  47   void OnBufferPresented(
  48       const AcceleratedSurfaceMsg_BufferPresented_Params& params) override;
  49   void OnResize(gfx::Size pixel_size, float scale_factor) override;
  50   void SetLatencyInfo(const std::vector<ui::LatencyInfo>&) override;
  51   void WakeUpGpu() override;
  52
  53  private:
  54   class PendingSwap;
  55
  56   ~ImageTransportSurfaceOverlayMac() override;
  57
  58   gfx::SwapResult SwapBuffersInternal(const gfx::Rect& pixel_damage_rect);
  59
  60   // Returns true if the front of |pending_swaps_| has completed, or has timed
  61   // out by |now|.
  62   bool IsFirstPendingSwapReadyToDisplay(
  63     const base::TimeTicks& now);
  64   // Sets the CALayer contents to the IOSurface for the front of
  65   // |pending_swaps_|, and removes it from the queue.
  66   void DisplayFirstPendingSwapImmediately();
  67   // Force that all of |pending_swaps_| displayed immediately, and the list be
  68   // cleared.
  69   void FinishAllPendingSwaps();
  70   // Callback issued during the next vsync period ofter a SwapBuffers call,
  71   // to check if the swap is completed, and display the frame. Note that if
  72   // another SwapBuffers happens before this callback, the pending swap will
  73   // be tested at that time, too.
  74   void CheckPendingSwapsCallback();
  75   // Function to post the above callback. The argument |now| is passed as an
  76   // argument to avoid redundant calls to base::TimeTicks::Now.
  77   void PostCheckPendingSwapsCallbackIfNeeded(const base::TimeTicks& now);
  78
  79   scoped_ptr<ImageTransportHelper> helper_;
  80   base::scoped_nsobject<CAContext> ca_context_;
  81   base::scoped_nsobject<CALayer> layer_;
  82   base::scoped_nsobject<CALayer> partial_damage_layer_;
  83
  84   gfx::Size pixel_size_;
  85   float scale_factor_;
  86   std::vector<ui::LatencyInfo> latency_info_;
  87
  88   // Weak pointer to the image provided when ScheduleOverlayPlane is called. Is
  89   // consumed and reset when SwapBuffers is called. For now, only one overlay
  90   // plane is supported.
  91   gfx::GLImage* pending_overlay_image_;
  92
  93   // A queue of all frames that have been created by SwapBuffersInternal but
  94   // have not yet been displayed. This queue is checked at the beginning of
  95   // every swap and also by a callback.
  96   std::deque<linked_ptr<PendingSwap>> pending_swaps_;
  97
  98   // The union of the damage rects of SwapBuffersInternal since the last
  99   // non-partial swap.
 100   gfx::Rect accumulated_partial_damage_pixel_rect_;
 101
 102   // The display link used to compute the time for callbacks.
 103   scoped_refptr<ui::DisplayLinkMac> display_link_mac_;
 104
 105   // True if there is a pending call to CheckPendingSwapsCallback posted.
 106   bool has_pending_callback_;
 107
 108   base::WeakPtrFactory<ImageTransportSurfaceOverlayMac> weak_factory_;
 109 };
 110
 111 }  // namespace content
 112
 113 #endif  // CONTENT_COMMON_GPU_IMAGE_TRANSPORT_SURFACE_OVERLAY_MAC_H_