OLD | NEW |
| (Empty) |
1 // Copyright 2016 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 COMPONENTS_EXO_COMPOSITOR_FRAME_SINK_HOLDER_H_ | |
6 #define COMPONENTS_EXO_COMPOSITOR_FRAME_SINK_HOLDER_H_ | |
7 | |
8 #include <list> | |
9 #include <map> | |
10 #include <memory> | |
11 | |
12 #include "cc/ipc/mojo_compositor_frame_sink.mojom.h" | |
13 #include "cc/resources/single_release_callback.h" | |
14 #include "cc/resources/transferable_resource.h" | |
15 #include "cc/scheduler/begin_frame_source.h" | |
16 #include "components/exo/compositor_frame_sink.h" | |
17 #include "components/exo/surface_observer.h" | |
18 #include "mojo/public/cpp/bindings/binding.h" | |
19 | |
20 namespace exo { | |
21 class Surface; | |
22 | |
23 // This class talks to MojoCompositorFrameSink and keeps track of references to | |
24 // the contents of Buffers. It's keeped alive by references from | |
25 // release_callbacks_. It's destroyed when its owning Surface is destroyed and | |
26 // the last outstanding release callback is called. | |
27 class CompositorFrameSinkHolder | |
28 : public base::RefCounted<CompositorFrameSinkHolder>, | |
29 public cc::ExternalBeginFrameSourceClient, | |
30 public cc::mojom::MojoCompositorFrameSinkClient, | |
31 public cc::BeginFrameObserver, | |
32 public SurfaceObserver { | |
33 public: | |
34 CompositorFrameSinkHolder( | |
35 Surface* surface, | |
36 std::unique_ptr<CompositorFrameSink> frame_sink, | |
37 cc::mojom::MojoCompositorFrameSinkClientRequest request); | |
38 | |
39 bool HasReleaseCallbackForResource(cc::ResourceId id); | |
40 void AddResourceReleaseCallback( | |
41 cc::ResourceId id, | |
42 std::unique_ptr<cc::SingleReleaseCallback> callback); | |
43 | |
44 CompositorFrameSink* GetCompositorFrameSink() { return frame_sink_.get(); } | |
45 | |
46 base::WeakPtr<CompositorFrameSinkHolder> GetWeakPtr() { | |
47 return weak_factory_.GetWeakPtr(); | |
48 } | |
49 | |
50 using FrameCallback = base::Callback<void(base::TimeTicks frame_time)>; | |
51 void ActivateFrameCallbacks(std::list<FrameCallback>* frame_callbacks); | |
52 void CancelFrameCallbacks(); | |
53 | |
54 void SetNeedsBeginFrame(bool needs_begin_frame); | |
55 | |
56 void Satisfy(const cc::SurfaceSequence& sequence); | |
57 void Require(const cc::SurfaceId& id, const cc::SurfaceSequence& sequence); | |
58 | |
59 // Overridden from cc::mojom::MojoCompositorFrameSinkClient: | |
60 void DidReceiveCompositorFrameAck() override; | |
61 void OnBeginFrame(const cc::BeginFrameArgs& args) override; | |
62 void ReclaimResources(const cc::ReturnedResourceArray& resources) override; | |
63 void WillDrawSurface() override; | |
64 | |
65 // Overridden from cc::BeginFrameObserver: | |
66 const cc::BeginFrameArgs& LastUsedBeginFrameArgs() const override; | |
67 void OnBeginFrameSourcePausedChanged(bool paused) override; | |
68 | |
69 // Overridden from cc::ExternalBeginFrameSouceClient: | |
70 void OnNeedsBeginFrames(bool needs_begin_frames) override; | |
71 | |
72 // Overridden from SurfaceObserver: | |
73 void OnSurfaceDestroying(Surface* surface) override; | |
74 | |
75 private: | |
76 friend class base::RefCounted<CompositorFrameSinkHolder>; | |
77 | |
78 ~CompositorFrameSinkHolder() override; | |
79 | |
80 void UpdateNeedsBeginFrame(); | |
81 | |
82 // Each release callback holds a reference to the CompositorFrameSinkHolder | |
83 // itself to keep it alive. Running and erasing the callbacks might result in | |
84 // the instance being destroyed. Therefore, we should not access any member | |
85 // variables after running and erasing the callbacks. | |
86 using ResourceReleaseCallbackMap = | |
87 std::map<int, | |
88 std::pair<scoped_refptr<CompositorFrameSinkHolder>, | |
89 std::unique_ptr<cc::SingleReleaseCallback>>>; | |
90 ResourceReleaseCallbackMap release_callbacks_; | |
91 | |
92 Surface* surface_; | |
93 std::unique_ptr<CompositorFrameSink> frame_sink_; | |
94 | |
95 std::list<FrameCallback> active_frame_callbacks_; | |
96 std::unique_ptr<cc::ExternalBeginFrameSource> begin_frame_source_; | |
97 bool needs_begin_frame_ = false; | |
98 cc::BeginFrameArgs last_begin_frame_args_; | |
99 mojo::Binding<cc::mojom::MojoCompositorFrameSinkClient> binding_; | |
100 | |
101 base::WeakPtrFactory<CompositorFrameSinkHolder> weak_factory_; | |
102 | |
103 DISALLOW_COPY_AND_ASSIGN(CompositorFrameSinkHolder); | |
104 }; | |
105 | |
106 } // namespace exo | |
107 | |
108 #endif // COMPONENTS_EXO_COMPOSITOR_FRAME_SINK_HOLDER_H_ | |
OLD | NEW |