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      1 // Copyright 2011 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 WEBKIT_RENDERER_COMPOSITOR_BINDINGS_WEB_EXTERNAL_TEXTURE_LAYER_IMPL_H_
      6 #define WEBKIT_RENDERER_COMPOSITOR_BINDINGS_WEB_EXTERNAL_TEXTURE_LAYER_IMPL_H_
      7 
      8 #include "base/bind.h"
      9 #include "base/memory/scoped_ptr.h"
     10 #include "base/memory/scoped_vector.h"
     11 #include "cc/layers/texture_layer_client.h"
     12 #include "third_party/WebKit/public/platform/WebExternalTextureLayer.h"
     13 #include "webkit/renderer/compositor_bindings/webkit_compositor_bindings_export.h"
     14 
     15 namespace cc {
     16 class SingleReleaseCallback;
     17 class TextureMailbox;
     18 }
     19 
     20 namespace blink {
     21 struct WebFloatRect;
     22 struct WebExternalTextureMailbox;
     23 }
     24 
     25 namespace webkit {
     26 
     27 class WebLayerImpl;
     28 class WebExternalBitmapImpl;
     29 
     30 class WebExternalTextureLayerImpl
     31     : public blink::WebExternalTextureLayer,
     32       public cc::TextureLayerClient,
     33       public base::SupportsWeakPtr<WebExternalTextureLayerImpl> {
     34  public:
     35   WEBKIT_COMPOSITOR_BINDINGS_EXPORT explicit WebExternalTextureLayerImpl(
     36       blink::WebExternalTextureLayerClient*);
     37   virtual ~WebExternalTextureLayerImpl();
     38 
     39   // blink::WebExternalTextureLayer implementation.
     40   virtual blink::WebLayer* layer();
     41   virtual void clearTexture();
     42   virtual void setOpaque(bool opaque);
     43   virtual void setPremultipliedAlpha(bool premultiplied);
     44   virtual void setBlendBackgroundColor(bool blend);
     45   virtual void setRateLimitContext(bool rate_limit);
     46 
     47   // TextureLayerClient implementation.
     48   virtual unsigned PrepareTexture() OVERRIDE;
     49   virtual bool PrepareTextureMailbox(
     50       cc::TextureMailbox* mailbox,
     51       scoped_ptr<cc::SingleReleaseCallback>* release_callback,
     52       bool use_shared_memory) OVERRIDE;
     53 
     54  private:
     55   static void DidReleaseMailbox(
     56       base::WeakPtr<WebExternalTextureLayerImpl> layer,
     57       const blink::WebExternalTextureMailbox& mailbox,
     58       WebExternalBitmapImpl* bitmap,
     59       unsigned sync_point,
     60       bool lost_resource);
     61 
     62   WebExternalBitmapImpl* AllocateBitmap();
     63 
     64   blink::WebExternalTextureLayerClient* client_;
     65   scoped_ptr<WebLayerImpl> layer_;
     66   ScopedVector<WebExternalBitmapImpl> free_bitmaps_;
     67 
     68   DISALLOW_COPY_AND_ASSIGN(WebExternalTextureLayerImpl);
     69 };
     70 
     71 }  // namespace webkit
     72 
     73 #endif  // WEBKIT_RENDERER_COMPOSITOR_BINDINGS_WEB_EXTERNAL_TEXTURE_LAYER_IMPL_H_
     74