1 files changed, 97 insertions, 0 deletions
diff --git a/gfx/layers/wr/RenderRootStateManager.h b/gfx/layers/wr/RenderRootStateManager.h
new file mode 100644
index 0000000000..6c0221776e
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+++ b/gfx/layers/wr/RenderRootStateManager.h
@@ -0,0 +1,97 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef GFX_RENDERROOTSTATEMANAGER_H
+#define GFX_RENDERROOTSTATEMANAGER_H
+
+#include "mozilla/webrender/WebRenderAPI.h"
+
+#include "mozilla/layers/IpcResourceUpdateQueue.h"
+#include "mozilla/layers/SharedSurfacesChild.h"
+#include "mozilla/layers/WebRenderCommandBuilder.h"
+#include "nsTHashSet.h"
+
+namespace mozilla {
+
+namespace layers {
+
+class RenderRootStateManager {
+  typedef nsTHashSet<RefPtr<WebRenderUserData>> WebRenderUserDataRefTable;
+
+ public:
+  void AddRef();
+  void Release();
+
+  RenderRootStateManager() : mLayerManager(nullptr), mDestroyed(false) {}
+
+  void Destroy();
+  bool IsDestroyed() { return mDestroyed; }
+  wr::IpcResourceUpdateQueue& AsyncResourceUpdates();
+  WebRenderBridgeChild* WrBridge() const;
+  WebRenderCommandBuilder& CommandBuilder();
+  WebRenderUserDataRefTable* GetWebRenderUserDataTable();
+  WebRenderLayerManager* LayerManager() { return mLayerManager; }
+
+  void AddImageKeyForDiscard(wr::ImageKey key);
+  void AddBlobImageKeyForDiscard(wr::BlobImageKey key);
+  void DiscardImagesInTransaction(wr::IpcResourceUpdateQueue& aResources);
+  void DiscardLocalImages();
+
+  void ClearCachedResources();
+
+  // Methods to manage the compositor animation ids. Active animations are still
+  // going, and when they end we discard them and remove them from the active
+  // list.
+  void AddActiveCompositorAnimationId(uint64_t aId);
+  void AddCompositorAnimationsIdForDiscard(uint64_t aId);
+  void DiscardCompositorAnimations();
+
+  void RegisterAsyncAnimation(const wr::ImageKey& aKey,
+                              SharedSurfacesAnimation* aAnimation);
+  void DeregisterAsyncAnimation(const wr::ImageKey& aKey);
+  void ClearAsyncAnimations();
+  void WrReleasedImages(const nsTArray<wr::ExternalImageKeyPair>& aPairs);
+
+  void AddWebRenderParentCommand(const WebRenderParentCommand& aCmd);
+  void UpdateResources(wr::IpcResourceUpdateQueue& aResources);
+  void AddPipelineIdForCompositable(const wr::PipelineId& aPipelineId,
+                                    const CompositableHandle& aHandle,
+                                    CompositableHandleOwner aOwner);
+  void RemovePipelineIdForCompositable(const wr::PipelineId& aPipelineId);
+  /// Release TextureClient that is bounded to ImageKey.
+  /// It is used for recycling TextureClient.
+  void ReleaseTextureOfImage(const wr::ImageKey& aKey);
+  Maybe<wr::FontInstanceKey> GetFontKeyForScaledFont(
+      gfx::ScaledFont* aScaledFont, wr::IpcResourceUpdateQueue& aResources);
+  Maybe<wr::FontKey> GetFontKeyForUnscaledFont(
+      gfx::UnscaledFont* aUnscaledFont, wr::IpcResourceUpdateQueue& aResources);
+
+  void FlushAsyncResourceUpdates();
+
+ private:
+  WebRenderLayerManager* mLayerManager;
+  Maybe<wr::IpcResourceUpdateQueue> mAsyncResourceUpdates;
+  nsTArray<wr::ImageKey> mImageKeysToDelete;
+  nsTArray<wr::BlobImageKey> mBlobImageKeysToDelete;
+  std::unordered_map<uint64_t, RefPtr<SharedSurfacesAnimation>>
+      mAsyncAnimations;
+
+  // Set of compositor animation ids for which there are active animations (as
+  // of the last transaction) on the compositor side.
+  std::unordered_set<uint64_t> mActiveCompositorAnimationIds;
+  // Compositor animation ids for animations that are done now and that we want
+  // the compositor to discard information for.
+  nsTArray<uint64_t> mDiscardedCompositorAnimationsIds;
+
+  bool mDestroyed;
+
+  friend class WebRenderLayerManager;
+};
+
+}  // namespace layers
+}  // namespace mozilla
+
+#endif /* GFX_RENDERROOTSTATEMANAGER_H */