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      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 <vector>
      9 
     10 #include "base/callback.h"
     11 #include "base/containers/hash_tables.h"
     12 #include "base/macros.h"
     13 #include "base/memory/scoped_ptr.h"
     14 #include "cc/base/scoped_ptr_vector.h"
     15 #include "cc/output/copy_output_request.h"
     16 #include "cc/surfaces/surface_id.h"
     17 #include "cc/surfaces/surfaces_export.h"
     18 #include "ui/gfx/size.h"
     19 
     20 namespace ui {
     21 struct LatencyInfo;
     22 }
     23 
     24 namespace cc {
     25 class CompositorFrame;
     26 class CopyOutputRequest;
     27 class SurfaceManager;
     28 class SurfaceFactory;
     29 class SurfaceResourceHolder;
     30 
     31 class CC_SURFACES_EXPORT Surface {
     32  public:
     33   Surface(SurfaceId id, const gfx::Size& size, SurfaceFactory* factory);
     34   ~Surface();
     35 
     36   const gfx::Size& size() const { return size_; }
     37   SurfaceId surface_id() const { return surface_id_; }
     38 
     39   void QueueFrame(scoped_ptr<CompositorFrame> frame,
     40                   const base::Closure& draw_callback);
     41   void RequestCopyOfOutput(scoped_ptr<CopyOutputRequest> copy_request);
     42   void TakeCopyOutputRequests(
     43       ScopedPtrVector<CopyOutputRequest>* copy_requests);
     44   // Returns the most recent frame that is eligible to be rendered.
     45   const CompositorFrame* GetEligibleFrame();
     46 
     47   // Returns a number that increments by 1 every time a new frame is enqueued.
     48   int frame_index() const { return frame_index_; }
     49 
     50   void TakeLatencyInfo(std::vector<ui::LatencyInfo>* latency_info);
     51   void RunDrawCallbacks();
     52 
     53   SurfaceFactory* factory() { return factory_; }
     54 
     55  private:
     56   SurfaceId surface_id_;
     57   gfx::Size size_;
     58   SurfaceFactory* factory_;
     59   // TODO(jamesr): Support multiple frames in flight.
     60   scoped_ptr<CompositorFrame> current_frame_;
     61   int frame_index_;
     62   ScopedPtrVector<CopyOutputRequest> copy_requests_;
     63 
     64   base::Closure draw_callback_;
     65 
     66   DISALLOW_COPY_AND_ASSIGN(Surface);
     67 };
     68 
     69 }  // namespace cc
     70 
     71 #endif  // CC_SURFACES_SURFACE_H_
     72