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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_SURFACES_FRAMESINK_MANAGER_H_ | |
6 #define CC_SURFACES_FRAMESINK_MANAGER_H_ | |
7 | |
8 #include <stdint.h> | |
9 | |
10 #include <list> | |
11 #include <memory> | |
12 #include <unordered_map> | |
13 #include <unordered_set> | |
14 #include <vector> | |
15 | |
16 #include "base/logging.h" | |
17 #include "base/macros.h" | |
18 #include "base/memory/weak_ptr.h" | |
19 #include "base/threading/thread_checker.h" | |
20 #include "cc/surfaces/frame_sink_id.h" | |
21 #include "cc/surfaces/surface_factory_client.h" | |
22 #include "cc/surfaces/surfaces_export.h" | |
23 | |
24 #if DCHECK_IS_ON() | |
25 #include <iosfwd> | |
26 #include <string> | |
27 #endif | |
28 | |
29 namespace cc { | |
30 class BeginFrameSource; | |
31 class SurfaceFactoryClient; | |
32 | |
33 class CC_SURFACES_EXPORT FrameSinkManager { | |
34 public: | |
35 FrameSinkManager(); | |
36 ~FrameSinkManager(); | |
37 | |
38 void RegisterFrameSinkId(const FrameSinkId& frame_sink_id); | |
Fady Samuel
2017/02/12 19:04:07
Ahh I see you've moved this here. I think you left
k.devara
2017/02/13 07:00:52
Yes, I will remove it from surface_manager.h, look
| |
39 | |
40 // Invalidate a frame_sink_id that might still have associated sequences, | |
41 // possibly because a renderer process has crashed. | |
42 void InvalidateFrameSinkId(const FrameSinkId& frame_sink_id); | |
43 | |
44 // SurfaceFactoryClient, hierarchy, and BeginFrameSource can be registered | |
45 // and unregistered in any order with respect to each other. | |
46 // | |
47 // This happens in practice, e.g. the relationship to between ui::Compositor / | |
48 // DelegatedFrameHost is known before ui::Compositor has a surface/client). | |
49 // However, DelegatedFrameHost can register itself as a client before its | |
50 // relationship with the ui::Compositor is known. | |
51 | |
52 // Associates a SurfaceFactoryClient with the surface id frame_sink_id it | |
53 // uses. | |
54 // SurfaceFactoryClient and surface namespaces/allocators have a 1:1 mapping. | |
55 // Caller guarantees the client is alive between register/unregister. | |
56 // Reregistering the same namespace when a previous client is active is not | |
57 // valid. | |
58 void RegisterSurfaceFactoryClient(const FrameSinkId& frame_sink_id, | |
59 SurfaceFactoryClient* client); | |
60 void UnregisterSurfaceFactoryClient(const FrameSinkId& frame_sink_id); | |
61 | |
62 // Associates a |source| with a particular namespace. That namespace and | |
63 // any children of that namespace with valid clients can potentially use | |
64 // that |source|. | |
65 void RegisterBeginFrameSource(BeginFrameSource* source, | |
66 const FrameSinkId& frame_sink_id); | |
67 void UnregisterBeginFrameSource(BeginFrameSource* source); | |
68 | |
69 // Register a relationship between two namespaces. This relationship means | |
70 // that surfaces from the child namespace will be displayed in the parent. | |
71 // Children are allowed to use any begin frame source that their parent can | |
72 // use. | |
73 void RegisterFrameSinkHierarchy(const FrameSinkId& parent_frame_sink_id, | |
74 const FrameSinkId& child_frame_sink_id); | |
75 void UnregisterFrameSinkHierarchy(const FrameSinkId& parent_frame_sink_id, | |
76 const FrameSinkId& child_frame_sink_id); | |
77 | |
78 private: | |
79 void RecursivelyAttachBeginFrameSource(const FrameSinkId& frame_sink_id, | |
80 BeginFrameSource* source); | |
81 void RecursivelyDetachBeginFrameSource(const FrameSinkId& frame_sink_id, | |
82 BeginFrameSource* source); | |
83 | |
84 // Returns true if |child namespace| is or has |search_frame_sink_id| as a | |
85 // child. | |
86 bool ChildContains(const FrameSinkId& child_frame_sink_id, | |
87 const FrameSinkId& search_frame_sink_id) const; | |
88 | |
89 // Set of valid surface ID namespaces. When a namespace is removed from | |
90 // this set, any remaining sequences with that namespace are considered | |
91 // satisfied. | |
92 std::unordered_set<FrameSinkId, FrameSinkIdHash> valid_frame_sink_ids_; | |
93 | |
94 // Begin frame source routing. Both BeginFrameSource and SurfaceFactoryClient | |
95 // pointers guaranteed alive by callers until unregistered. | |
96 struct FrameSinkSourceMapping { | |
97 FrameSinkSourceMapping(); | |
98 FrameSinkSourceMapping(const FrameSinkSourceMapping& other); | |
99 ~FrameSinkSourceMapping(); | |
100 bool is_empty() const { return !client && children.empty(); } | |
101 // The client that's responsible for creating this namespace. Never null. | |
102 SurfaceFactoryClient* client; | |
103 // The currently assigned begin frame source for this client. | |
104 BeginFrameSource* source; | |
105 // This represents a dag of parent -> children mapping. | |
106 std::vector<FrameSinkId> children; | |
107 }; | |
108 std::unordered_map<FrameSinkId, FrameSinkSourceMapping, FrameSinkIdHash> | |
109 frame_sink_source_map_; | |
110 | |
111 // Set of which sources are registered to which namespace. Any child | |
112 // that is implicitly using this namespace must be reachable by the | |
113 // parent in the dag. | |
114 std::unordered_map<BeginFrameSource*, FrameSinkId> registered_sources_; | |
115 | |
116 base::ThreadChecker thread_checker_; | |
117 | |
118 DISALLOW_COPY_AND_ASSIGN(FrameSinkManager); | |
119 }; | |
120 | |
121 } // namespace cc | |
122 | |
123 #endif // CC_SURFACES_FRAMESINK_MANAGER_H_ | |
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