Revert of Refactor content/common/gpu into gpu/ipc/service

content/common/gpu/image_transport_surface_overlay_mac.h

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CONTENT_COMMON_GPU_IMAGE_TRANSPORT_SURFACE_OVERLAY_MAC_H_
+#define CONTENT_COMMON_GPU_IMAGE_TRANSPORT_SURFACE_OVERLAY_MAC_H_
+
+#include <list>
+#include <vector>
+
+#import "base/mac/scoped_nsobject.h"
+#include "base/timer/timer.h"
+#include "content/common/gpu/gpu_command_buffer_stub.h"
+#include "content/common/gpu/image_transport_surface.h"
+#include "ui/base/cocoa/remote_layer_api.h"
+#include "ui/events/latency_info.h"
+#include "ui/gl/gl_surface.h"
+#include "ui/gl/gpu_switching_observer.h"
+
+@class CAContext;
+@class CALayer;
+
+namespace content {
+
+class CALayerTree;
+class CALayerPartialDamageTree;
+
+class ImageTransportSurfaceOverlayMac : public gfx::GLSurface,
+                                        public ui::GpuSwitchingObserver {
+ public:
+  ImageTransportSurfaceOverlayMac(GpuChannelManager* manager,
+                                  GpuCommandBufferStub* stub,
+                                  gpu::SurfaceHandle handle);
+
+  // GLSurface implementation
+  bool Initialize(gfx::GLSurface::Format format) override;
+  void Destroy() override;
+  bool Resize(const gfx::Size& size,
+              float scale_factor,
+              bool has_alpha) override;
+  bool IsOffscreen() override;
+  gfx::SwapResult SwapBuffers() override;
+  gfx::SwapResult PostSubBuffer(int x, int y, int width, int height) override;
+  bool SupportsPostSubBuffer() override;
+  gfx::Size GetSize() override;
+  void* GetHandle() override;
+  bool OnMakeCurrent(gfx::GLContext* context) override;
+  bool SetBackbufferAllocation(bool allocated) override;
+  bool ScheduleOverlayPlane(int z_order,
+                            gfx::OverlayTransform transform,
+                            gl::GLImage* image,
+                            const gfx::Rect& bounds_rect,
+                            const gfx::RectF& crop_rect) override;
+  bool ScheduleCALayer(gl::GLImage* contents_image,
+                       const gfx::RectF& contents_rect,
+                       float opacity,
+                       unsigned background_color,
+                       unsigned edge_aa_mask,
+                       const gfx::RectF& rect,
+                       bool is_clipped,
+                       const gfx::RectF& clip_rect,
+                       const gfx::Transform& transform,
+                       int sorting_context_id) override;
+  bool IsSurfaceless() const override;
+
+  // ui::GpuSwitchingObserver implementation.
+  void OnGpuSwitched() override;
+
+ private:
+  class PendingSwap;
+  class OverlayPlane;
+
+  ~ImageTransportSurfaceOverlayMac() override;
+
+  void SetLatencyInfo(const std::vector<ui::LatencyInfo>& latency_info);
+  void BufferPresented(int32_t surface_id,
+                       const base::TimeTicks& vsync_timebase,
+                       const base::TimeDelta& vsync_interval);
+  void SendAcceleratedSurfaceBuffersSwapped(
+      int32_t surface_id,
+      CAContextID ca_context_id,
+      const gfx::ScopedRefCountedIOSurfaceMachPort& io_surface,
+      const gfx::Size& size,
+      float scale_factor,
+      std::vector<ui::LatencyInfo> latency_info);
+  gfx::SwapResult SwapBuffersInternal(const gfx::Rect& pixel_damage_rect);
+
+  // Returns true if the front of |pending_swaps_| has completed, or has timed
+  // out by |now|.
+  bool IsFirstPendingSwapReadyToDisplay(
+    const base::TimeTicks& now);
+  // Sets the CALayer contents to the IOSurface for the front of
+  // |pending_swaps_|, and removes it from the queue.
+  void DisplayFirstPendingSwapImmediately();
+  // Force that all of |pending_swaps_| displayed immediately, and the list be
+  // cleared.
+  void DisplayAndClearAllPendingSwaps();
+  // Callback issued during the next vsync period ofter a SwapBuffers call,
+  // to check if the swap is completed, and display the frame. Note that if
+  // another SwapBuffers happens before this callback, the pending swap will
+  // be tested at that time, too.
+  void CheckPendingSwapsCallback();
+  // Function to post the above callback. The argument |now| is passed as an
+  // argument to avoid redundant calls to base::TimeTicks::Now.
+  void PostCheckPendingSwapsCallbackIfNeeded(const base::TimeTicks& now);
+
+  // Return the time of |interval_fraction| of the way through the next
+  // vsync period that starts after |from|. If the vsync parameters are not
+  // valid then return |from|.
+  base::TimeTicks GetNextVSyncTimeAfter(
+      const base::TimeTicks& from, double interval_fraction);
+
+  GpuChannelManager* manager_;
+  base::WeakPtr<GpuCommandBufferStub> stub_;
+  gpu::SurfaceHandle handle_;
+  std::vector<ui::LatencyInfo> latency_info_;
+
+  bool use_remote_layer_api_;
+  base::scoped_nsobject<CAContext> ca_context_;
+  base::scoped_nsobject<CALayer> ca_root_layer_;
+
+  gfx::Size pixel_size_;
+  float scale_factor_;
+
+  // The renderer ID that all contexts made current to this surface should be
+  // targeting.
+  GLint gl_renderer_id_;
+
+  // Planes that have been scheduled, but have not had a subsequent SwapBuffers
+  // call made yet.
+  scoped_ptr<CALayerPartialDamageTree> pending_partial_damage_tree_;
+  scoped_ptr<CALayerTree> pending_ca_layer_tree_;
+
+  // A queue of all frames that have been created by SwapBuffersInternal but
+  // have not yet been displayed. This queue is checked at the beginning of
+  // every swap and also by a callback.
+  std::deque<linked_ptr<PendingSwap>> pending_swaps_;
+
+  // The planes that are currently being displayed on the screen.
+  scoped_ptr<CALayerPartialDamageTree> current_partial_damage_tree_;
+  scoped_ptr<CALayerTree> current_ca_layer_tree_;
+
+  // The time of the last swap was issued. If this is more than two vsyncs, then
+  // use the simpler non-smooth animation path.
+  base::TimeTicks last_swap_time_;
+
+  // The vsync information provided by the browser.
+  bool vsync_parameters_valid_;
+  base::TimeTicks vsync_timebase_;
+  base::TimeDelta vsync_interval_;
+
+  base::Timer display_pending_swap_timer_;
+  base::WeakPtrFactory<ImageTransportSurfaceOverlayMac> weak_factory_;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_COMMON_GPU_IMAGE_TRANSPORT_SURFACE_OVERLAY_MAC_H_