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      1 // Copyright 2010 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_LAYERS_VIDEO_LAYER_H_
      6 #define CC_LAYERS_VIDEO_LAYER_H_
      7 
      8 #include "base/callback.h"
      9 #include "cc/base/cc_export.h"
     10 #include "cc/layers/layer.h"
     11 #include "media/base/video_rotation.h"
     12 
     13 namespace media { class VideoFrame; }
     14 
     15 namespace cc {
     16 
     17 class VideoFrameProvider;
     18 class VideoLayerImpl;
     19 
     20 // A Layer that contains a Video element.
     21 class CC_EXPORT VideoLayer : public Layer {
     22  public:
     23   static scoped_refptr<VideoLayer> Create(VideoFrameProvider* provider,
     24                                           media::VideoRotation video_rotation);
     25 
     26   virtual scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl)
     27       OVERRIDE;
     28 
     29   virtual bool Update(ResourceUpdateQueue* queue,
     30                       const OcclusionTracker<Layer>* occlusion) OVERRIDE;
     31 
     32  private:
     33   VideoLayer(VideoFrameProvider* provider, media::VideoRotation video_rotation);
     34   virtual ~VideoLayer();
     35 
     36   // This pointer is only for passing to VideoLayerImpl's constructor. It should
     37   // never be dereferenced by this class.
     38   VideoFrameProvider* provider_;
     39 
     40   media::VideoRotation video_rotation_;
     41 
     42   DISALLOW_COPY_AND_ASSIGN(VideoLayer);
     43 };
     44 
     45 }  // namespace cc
     46 
     47 #endif  // CC_LAYERS_VIDEO_LAYER_H_
     48