cc/surfaces/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 CC_SURFACES_SURFACE_H_
   6 #define CC_SURFACES_SURFACE_H_
   7
   8 #include <map>
   9 #include <vector>
  10
  11 #include "base/callback.h"
  12 #include "base/containers/hash_tables.h"
  13 #include "base/macros.h"
  14 #include "base/memory/scoped_ptr.h"
  15 #include "base/memory/weak_ptr.h"
  16 #include "cc/base/scoped_ptr_vector.h"
  17 #include "cc/output/copy_output_request.h"
  18 #include "cc/quads/render_pass_id.h"
  19 #include "cc/surfaces/surface_factory.h"
  20 #include "cc/surfaces/surface_id.h"
  21 #include "cc/surfaces/surface_sequence.h"
  22 #include "cc/surfaces/surfaces_export.h"
  23 #include "ui/gfx/geometry/size.h"
  24
  25 namespace ui {
  26 struct LatencyInfo;
  27 }
  28
  29 namespace cc {
  30 class CompositorFrame;
  31 class CopyOutputRequest;
  32 class SurfaceManager;
  33 class SurfaceFactory;
  34 class SurfaceResourceHolder;
  35
  36 class CC_SURFACES_EXPORT Surface {
  37  public:
  38   using DrawCallback = SurfaceFactory::DrawCallback;
  39
  40   Surface(SurfaceId id, SurfaceFactory* factory);
  41   ~Surface();
  42
  43   SurfaceId surface_id() const { return surface_id_; }
  44
  45   void QueueFrame(scoped_ptr<CompositorFrame> frame,
  46                   const DrawCallback& draw_callback);
  47   void RequestCopyOfOutput(scoped_ptr<CopyOutputRequest> copy_request);
  48   // Adds each CopyOutputRequest in the current frame to copy_requests. The
  49   // caller takes ownership of them.
  50   void TakeCopyOutputRequests(
  51       std::multimap<RenderPassId, CopyOutputRequest*>* copy_requests);
  52   // Returns the most recent frame that is eligible to be rendered.
  53   const CompositorFrame* GetEligibleFrame();
  54
  55   // Returns a number that increments by 1 every time a new frame is enqueued.
  56   int frame_index() const { return frame_index_; }
  57
  58   void TakeLatencyInfo(std::vector<ui::LatencyInfo>* latency_info);
  59   void RunDrawCallbacks(SurfaceDrawStatus drawn);
  60
  61   base::WeakPtr<SurfaceFactory> factory() { return factory_; }
  62
  63   // Add a SurfaceSequence that must be satisfied before the Surface is
  64   // destroyed.
  65   void AddDestructionDependency(SurfaceSequence sequence);
  66
  67   // Satisfy all destruction dependencies that are contained in sequences, and
  68   // remove them from sequences.
  69   void SatisfyDestructionDependencies(
  70       base::hash_set<SurfaceSequence>* sequences);
  71   size_t GetDestructionDependencyCount() const {
  72     return destruction_dependencies_.size();
  73   }
  74
  75  private:
  76   void ClearCopyRequests();
  77
  78   SurfaceId surface_id_;
  79   base::WeakPtr<SurfaceFactory> factory_;
  80   // TODO(jamesr): Support multiple frames in flight.
  81   scoped_ptr<CompositorFrame> current_frame_;
  82   int frame_index_;
  83   std::vector<SurfaceSequence> destruction_dependencies_;
  84
  85   DrawCallback draw_callback_;
  86
  87   DISALLOW_COPY_AND_ASSIGN(Surface);
  88 };
  89
  90 }  // namespace cc
  91
  92 #endif  // CC_SURFACES_SURFACE_H_