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