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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_FACTORY_H_
      6 #define CC_SURFACES_SURFACE_FACTORY_H_
      7 
      8 #include "base/callback_forward.h"
      9 #include "base/containers/scoped_ptr_hash_map.h"
     10 #include "base/memory/scoped_ptr.h"
     11 #include "base/memory/weak_ptr.h"
     12 #include "cc/surfaces/surface_id.h"
     13 #include "cc/surfaces/surface_resource_holder.h"
     14 #include "cc/surfaces/surfaces_export.h"
     15 
     16 namespace gfx {
     17 class Size;
     18 }
     19 
     20 namespace cc {
     21 class CompositorFrame;
     22 class CopyOutputRequest;
     23 class Surface;
     24 class SurfaceFactoryClient;
     25 class SurfaceManager;
     26 
     27 // A SurfaceFactory is used to create surfaces that may share resources and
     28 // receive returned resources for frames submitted to those surfaces. Resources
     29 // submitted to frames created by a particular factory will be returned to that
     30 // factory's client when they are no longer being used. This is the only class
     31 // most users of surfaces will need to directly interact with.
     32 class CC_SURFACES_EXPORT SurfaceFactory
     33     : public base::SupportsWeakPtr<SurfaceFactory> {
     34  public:
     35   SurfaceFactory(SurfaceManager* manager, SurfaceFactoryClient* client);
     36   ~SurfaceFactory();
     37 
     38   void Create(SurfaceId surface_id, const gfx::Size& size);
     39   void Destroy(SurfaceId surface_id);
     40   // A frame can only be submitted to a surface created by this factory,
     41   // although the frame may reference surfaces created by other factories.
     42   // The callback is called the first time this frame is used to draw.
     43   void SubmitFrame(SurfaceId surface_id,
     44                    scoped_ptr<CompositorFrame> frame,
     45                    const base::Closure& callback);
     46   void RequestCopyOfSurface(SurfaceId surface_id,
     47                             scoped_ptr<CopyOutputRequest> copy_request);
     48 
     49   SurfaceFactoryClient* client() { return client_; }
     50 
     51   void ReceiveFromChild(const TransferableResourceArray& resources);
     52   void RefResources(const TransferableResourceArray& resources);
     53   void UnrefResources(const ReturnedResourceArray& resources);
     54 
     55  private:
     56   SurfaceManager* manager_;
     57   SurfaceFactoryClient* client_;
     58   SurfaceResourceHolder holder_;
     59 
     60   typedef base::ScopedPtrHashMap<SurfaceId, Surface> OwningSurfaceMap;
     61   base::ScopedPtrHashMap<SurfaceId, Surface> surface_map_;
     62 
     63   DISALLOW_COPY_AND_ASSIGN(SurfaceFactory);
     64 };
     65 
     66 }  // namespace cc
     67 
     68 #endif  // CC_SURFACES_SURFACE_FACTORY_H_
     69