| // Copyright 2016 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef COMPONENTS_EXO_LAYER_TREE_FRAME_SINK_HOLDER_H_ |
| #define COMPONENTS_EXO_LAYER_TREE_FRAME_SINK_HOLDER_H_ |
| |
| #include <memory> |
| |
| #include "base/containers/flat_map.h" |
| #include "cc/output/layer_tree_frame_sink_client.h" |
| #include "cc/resources/release_callback.h" |
| #include "components/exo/surface_observer.h" |
| |
| namespace cc { |
| class LayerTreeFrameSink; |
| } |
| |
| namespace exo { |
| class Surface; |
| |
| // This class talks to MojoCompositorFrameSink and keeps track of references to |
| // the contents of Buffers. It's keeped alive by references from |
| // release_callbacks_. It's destroyed when its owning Surface is destroyed and |
| // the last outstanding release callback is called. |
| class LayerTreeFrameSinkHolder : public cc::LayerTreeFrameSinkClient, |
| public SurfaceObserver { |
| public: |
| LayerTreeFrameSinkHolder(Surface* surface, |
| std::unique_ptr<cc::LayerTreeFrameSink> frame_sink); |
| ~LayerTreeFrameSinkHolder() override; |
| |
| bool HasReleaseCallbackForResource(cc::ResourceId id); |
| void SetResourceReleaseCallback(cc::ResourceId id, |
| const cc::ReleaseCallback& callback); |
| |
| cc::LayerTreeFrameSink* GetLayerTreeFrameSink() { return frame_sink_.get(); } |
| |
| base::WeakPtr<LayerTreeFrameSinkHolder> GetWeakPtr() { |
| return weak_factory_.GetWeakPtr(); |
| } |
| |
| // Overridden from cc::LayerTreeFrameSinkClient: |
| void SetBeginFrameSource(cc::BeginFrameSource* source) override; |
| void ReclaimResources(const cc::ReturnedResourceArray& resources) override; |
| void SetTreeActivationCallback(const base::Closure& callback) override {} |
| void DidReceiveCompositorFrameAck() override; |
| void DidLoseLayerTreeFrameSink() override {} |
| void OnDraw(const gfx::Transform& transform, |
| const gfx::Rect& viewport, |
| bool resourceless_software_draw) override {} |
| void SetMemoryPolicy(const cc::ManagedMemoryPolicy& policy) override {} |
| void SetExternalTilePriorityConstraints( |
| const gfx::Rect& viewport_rect, |
| const gfx::Transform& transform) override {} |
| |
| // Overridden from SurfaceObserver: |
| void OnSurfaceDestroying(Surface* surface) override; |
| |
| private: |
| // A collection of callbacks used to release resources. |
| using ResourceReleaseCallbackMap = base::flat_map<int, cc::ReleaseCallback>; |
| ResourceReleaseCallbackMap release_callbacks_; |
| |
| Surface* surface_; |
| std::unique_ptr<cc::LayerTreeFrameSink> frame_sink_; |
| |
| base::WeakPtrFactory<LayerTreeFrameSinkHolder> weak_factory_; |
| |
| DISALLOW_COPY_AND_ASSIGN(LayerTreeFrameSinkHolder); |
| }; |
| |
| } // namespace exo |
| |
| #endif // COMPONENTS_EXO_LAYER_TREE_FRAME_SINK_HOLDER_H_ |