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Side by Side Diff: ash/wm/video_detector.h

Issue 2095193002: clang-format all of //ash (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 4 years, 6 months ago
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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef ASH_WM_VIDEO_DETECTOR_H_ 5 #ifndef ASH_WM_VIDEO_DETECTOR_H_
6 #define ASH_WM_VIDEO_DETECTOR_H_ 6 #define ASH_WM_VIDEO_DETECTOR_H_
7 7
8 #include <map> 8 #include <map>
9 9
10 #include "ash/ash_export.h" 10 #include "ash/ash_export.h"
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35 35
36 protected: 36 protected:
37 virtual ~VideoDetectorObserver() {} 37 virtual ~VideoDetectorObserver() {}
38 }; 38 };
39 39
40 // Watches for updates to windows and tries to detect when a video is playing. 40 // Watches for updates to windows and tries to detect when a video is playing.
41 // We err on the side of false positives and can be fooled by things like 41 // We err on the side of false positives and can be fooled by things like
42 // continuous scrolling of a page. 42 // continuous scrolling of a page.
43 class ASH_EXPORT VideoDetector : public aura::EnvObserver, 43 class ASH_EXPORT VideoDetector : public aura::EnvObserver,
44 public aura::WindowObserver, 44 public aura::WindowObserver,
45 public ShellObserver { 45 public ShellObserver {
46 public: 46 public:
47 // Minimum dimensions in pixels that a window update must have to be 47 // Minimum dimensions in pixels that a window update must have to be
48 // considered a potential video frame. 48 // considered a potential video frame.
49 static const int kMinUpdateWidth; 49 static const int kMinUpdateWidth;
50 static const int kMinUpdateHeight; 50 static const int kMinUpdateHeight;
51 51
52 // Number of video-sized updates that we must see within a second in a window 52 // Number of video-sized updates that we must see within a second in a window
53 // before we assume that a video is playing. 53 // before we assume that a video is playing.
54 static const int kMinFramesPerSecond; 54 static const int kMinFramesPerSecond;
55 55
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71 // WindowObserver overrides. 71 // WindowObserver overrides.
72 void OnDelegatedFrameDamage(aura::Window* window, 72 void OnDelegatedFrameDamage(aura::Window* window,
73 const gfx::Rect& region) override; 73 const gfx::Rect& region) override;
74 void OnWindowDestroyed(aura::Window* window) override; 74 void OnWindowDestroyed(aura::Window* window) override;
75 75
76 // ShellObserver overrides. 76 // ShellObserver overrides.
77 void OnAppTerminating() override; 77 void OnAppTerminating() override;
78 78
79 private: 79 private:
80 class WindowInfo; 80 class WindowInfo;
81 typedef std::map<aura::Window*, linked_ptr<WindowInfo> > WindowInfoMap; 81 typedef std::map<aura::Window*, linked_ptr<WindowInfo>> WindowInfoMap;
82 82
83 // Possibly notifies observers in response to detection of a video in 83 // Possibly notifies observers in response to detection of a video in
84 // |window|. Notifications are rate-limited and don't get sent if the window 84 // |window|. Notifications are rate-limited and don't get sent if the window
85 // is invisible or offscreen. 85 // is invisible or offscreen.
86 void MaybeNotifyObservers(aura::Window* window, base::TimeTicks now); 86 void MaybeNotifyObservers(aura::Window* window, base::TimeTicks now);
87 87
88 // Maps from a window that we're tracking to information about it. 88 // Maps from a window that we're tracking to information about it.
89 WindowInfoMap window_infos_; 89 WindowInfoMap window_infos_;
90 90
91 base::ObserverList<VideoDetectorObserver> observers_; 91 base::ObserverList<VideoDetectorObserver> observers_;
92 92
93 // Last time at which we notified observers that a video was playing. 93 // Last time at which we notified observers that a video was playing.
94 base::TimeTicks last_observer_notification_time_; 94 base::TimeTicks last_observer_notification_time_;
95 95
96 // If set, used when the current time is needed. This can be set by tests to 96 // If set, used when the current time is needed. This can be set by tests to
97 // simulate the passage of time. 97 // simulate the passage of time.
98 base::TimeTicks now_for_test_; 98 base::TimeTicks now_for_test_;
99 99
100 ScopedObserver<aura::Window, aura::WindowObserver> observer_manager_; 100 ScopedObserver<aura::Window, aura::WindowObserver> observer_manager_;
101 101
102 bool is_shutting_down_; 102 bool is_shutting_down_;
103 103
104 DISALLOW_COPY_AND_ASSIGN(VideoDetector); 104 DISALLOW_COPY_AND_ASSIGN(VideoDetector);
105 }; 105 };
106 106
107 } // namespace ash 107 } // namespace ash
108 108
109 #endif // ASH_WM_VIDEO_DETECTOR_H_ 109 #endif // ASH_WM_VIDEO_DETECTOR_H_
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