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       1             : /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
       2             :  * This Source Code Form is subject to the terms of the Mozilla Public
       3             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       4             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       5             : 
       6             : #ifndef MOZILLA_GFX_WEBRENDERIMAGEHOST_H
       7             : #define MOZILLA_GFX_WEBRENDERIMAGEHOST_H
       8             : 
       9             : #include "CompositableHost.h"           // for CompositableHost
      10             : #include "mozilla/layers/ImageComposite.h"  // for ImageComposite
      11             : 
      12             : namespace mozilla {
      13             : namespace layers {
      14             : 
      15             : class WebRenderBridgeParent;
      16             : 
      17             : /**
      18             :  * ImageHost. Works with ImageClientSingle and ImageClientBuffered
      19             :  */
      20             : class WebRenderImageHost : public CompositableHost,
      21             :                            public ImageComposite
      22             : {
      23             : public:
      24             :   explicit WebRenderImageHost(const TextureInfo& aTextureInfo);
      25             :   ~WebRenderImageHost();
      26             : 
      27           0 :   virtual CompositableType GetType() override { return mTextureInfo.mCompositableType; }
      28             : 
      29             :   virtual void Composite(Compositor* aCompositor,
      30             :                          LayerComposite* aLayer,
      31             :                          EffectChain& aEffectChain,
      32             :                          float aOpacity,
      33             :                          const gfx::Matrix4x4& aTransform,
      34             :                          const gfx::SamplingFilter aSamplingFilter,
      35             :                          const gfx::IntRect& aClipRect,
      36             :                          const nsIntRegion* aVisibleRegion = nullptr,
      37             :                          const Maybe<gfx::Polygon>& aGeometry = Nothing()) override;
      38             : 
      39             :   virtual void UseTextureHost(const nsTArray<TimedTexture>& aTextures) override;
      40             :   virtual void UseComponentAlphaTextures(TextureHost* aTextureOnBlack,
      41             :                                          TextureHost* aTextureOnWhite) override;
      42             :   virtual void RemoveTextureHost(TextureHost* aTexture) override;
      43             : 
      44             :   virtual TextureHost* GetAsTextureHost(gfx::IntRect* aPictureRect = nullptr) override;
      45             : 
      46             :   virtual void Attach(Layer* aLayer,
      47             :                       TextureSourceProvider* aProvider,
      48             :                       AttachFlags aFlags = NO_FLAGS) override;
      49             : 
      50             :   virtual void SetTextureSourceProvider(TextureSourceProvider* aProvider) override;
      51             : 
      52             :   gfx::IntSize GetImageSize() const override;
      53             : 
      54             :   virtual void PrintInfo(std::stringstream& aStream, const char* aPrefix) override;
      55             : 
      56             :   virtual void Dump(std::stringstream& aStream,
      57             :                     const char* aPrefix = "",
      58             :                     bool aDumpHtml = false) override;
      59             : 
      60             :   virtual already_AddRefed<gfx::DataSourceSurface> GetAsSurface() override;
      61             : 
      62             :   virtual bool Lock() override;
      63             : 
      64             :   virtual void Unlock() override;
      65             : 
      66             :   virtual void CleanupResources() override;
      67             : 
      68           0 :   virtual WebRenderImageHost* AsWebRenderImageHost() override { return this; }
      69             : 
      70             :   TextureHost* GetAsTextureHostForComposite();
      71             : 
      72             :   void SetWrBridge(WebRenderBridgeParent* aWrBridge);
      73             : 
      74             :   void ClearWrBridge();
      75             : 
      76             :   TextureHost* GetCurrentTextureHost() { return mCurrentTextureHost; }
      77             : 
      78             : protected:
      79             :   // ImageComposite
      80             :   virtual TimeStamp GetCompositionTime() const override;
      81             : 
      82             :   void SetCurrentTextureHost(TextureHost* aTexture);
      83             : 
      84             :   WebRenderBridgeParent* MOZ_NON_OWNING_REF mWrBridge;
      85             : 
      86             :   uint32_t mWrBridgeBindings;
      87             : 
      88             :   CompositableTextureHostRef mCurrentTextureHost;
      89             : };
      90             : 
      91             : } // namespace layers
      92             : } // namespace mozilla
      93             : 
      94             : #endif // MOZILLA_GFX_WEBRENDERIMAGEHOST_H