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 struct WebFloatRect;
  17 struct WebExternalTextureMailbox;
  18 }
  19
  20 namespace cc {
  21 class SingleReleaseCallback;
  22 class TextureMailbox;
  23 }
  24
  25 namespace cc_blink {
  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   CC_BLINK_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   bool PrepareTextureMailbox(
  49       cc::TextureMailbox* mailbox,
  50       scoped_ptr<cc::SingleReleaseCallback>* release_callback,
  51       bool use_shared_memory) override;
  52
  53  private:
  54   static void DidReleaseMailbox(
  55       base::WeakPtr<WebExternalTextureLayerImpl> layer,
  56       const blink::WebExternalTextureMailbox& mailbox,
  57       WebExternalBitmapImpl* bitmap,
  58       unsigned sync_point,
  59       bool lost_resource);
  60
  61   WebExternalBitmapImpl* AllocateBitmap();
  62
  63   blink::WebExternalTextureLayerClient* client_;
  64   scoped_ptr<WebLayerImpl> layer_;
  65   ScopedVector<WebExternalBitmapImpl> free_bitmaps_;
  66
  67   DISALLOW_COPY_AND_ASSIGN(WebExternalTextureLayerImpl);
  68 };
  69
  70 }  // namespace cc_blink
  71
  72 #endif  // CC_BLINK_WEB_EXTERNAL_TEXTURE_LAYER_IMPL_H_