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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 #include "base/lazy_instance.h" | |
6 #include "content/browser/renderer_host/offscreen_canvas_surface_manager.h" | |
7 | |
8 namespace content { | |
9 | |
10 namespace { | |
11 base::LazyInstance<OffscreenCanvasSurfaceManager> g_manager = | |
12 LAZY_INSTANCE_INITIALIZER; | |
xlai (Olivia)
2016/11/11 22:56:57
I'm using a LazyInstance now, in response to dchen
| |
13 } | |
14 | |
15 OffscreenCanvasSurfaceManager::OffscreenCanvasSurfaceManager() {} | |
16 | |
17 OffscreenCanvasSurfaceManager::~OffscreenCanvasSurfaceManager() { | |
18 registered_surface_instances_.clear(); | |
19 registered_compositor_frame_sink_instances_.clear(); | |
20 } | |
21 | |
22 OffscreenCanvasSurfaceManager* OffscreenCanvasSurfaceManager::GetInstance() { | |
23 return g_manager.Pointer(); | |
24 } | |
25 | |
26 void OffscreenCanvasSurfaceManager::RegisterOffscreenCanvasSurfaceInstance( | |
27 cc::FrameSinkId frame_sink_id, | |
28 OffscreenCanvasSurfaceImpl* surface_instance) { | |
29 DCHECK(surface_instance); | |
30 DCHECK_EQ(registered_surface_instances_.count(frame_sink_id), 0u); | |
31 registered_surface_instances_[frame_sink_id] = surface_instance->GetWeakPtr(); | |
32 } | |
33 | |
34 void OffscreenCanvasSurfaceManager::UnregisterOffscreenCanvasSurfaceInstance( | |
35 cc::FrameSinkId frame_sink_id) { | |
36 DCHECK_EQ(registered_surface_instances_.count(frame_sink_id), 1u); | |
37 registered_surface_instances_.erase(frame_sink_id); | |
38 } | |
39 | |
40 void OffscreenCanvasSurfaceManager::RegisterCompositorFrameSinkInstance( | |
41 cc::FrameSinkId frame_sink_id, | |
42 OffscreenCanvasCompositorFrameSink* surface_instance) { | |
43 DCHECK(surface_instance); | |
44 DCHECK_EQ(registered_compositor_frame_sink_instances_.count(frame_sink_id), | |
45 0u); | |
46 registered_compositor_frame_sink_instances_[frame_sink_id] = | |
47 surface_instance->GetWeakPtr(); | |
48 } | |
49 | |
50 void OffscreenCanvasSurfaceManager::UnregisterCompositorFrameSinkInstance( | |
51 cc::FrameSinkId frame_sink_id) { | |
52 DCHECK_EQ(registered_compositor_frame_sink_instances_.count(frame_sink_id), | |
53 1u); | |
54 registered_compositor_frame_sink_instances_.erase(frame_sink_id); | |
55 } | |
56 | |
57 OffscreenCanvasSurfaceImpl* OffscreenCanvasSurfaceManager::GetSurfaceInstance( | |
58 cc::FrameSinkId frame_sink_id) { | |
59 auto search = registered_surface_instances_.find(frame_sink_id); | |
60 if (search != registered_surface_instances_.end()) { | |
61 return search->second.get(); | |
62 } | |
63 return nullptr; | |
64 } | |
65 | |
66 OffscreenCanvasCompositorFrameSink* | |
67 OffscreenCanvasSurfaceManager::GetCompositorFrameSinkInstance( | |
68 cc::FrameSinkId frame_sink_id) { | |
69 auto search = registered_compositor_frame_sink_instances_.find(frame_sink_id); | |
70 if (search != registered_compositor_frame_sink_instances_.end()) { | |
71 return search->second.get(); | |
72 } | |
73 return nullptr; | |
74 } | |
75 | |
76 } // namespace content | |
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