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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef ASH_SYSTEM_POWER_VIDEO_ACTIVITY_NOTIFIER_H_
#define ASH_SYSTEM_POWER_VIDEO_ACTIVITY_NOTIFIER_H_
#include "ash/ash_export.h"
#include "ash/public/cpp/session/session_observer.h"
#include "ash/wm/video_detector.h"
#include "base/memory/raw_ptr.h"
#include "base/timer/timer.h"
namespace ash {
// Notifies the power manager when a video is playing.
class ASH_EXPORT VideoActivityNotifier : public VideoDetector::Observer,
public SessionObserver {
public:
explicit VideoActivityNotifier(VideoDetector* detector);
VideoActivityNotifier(const VideoActivityNotifier&) = delete;
VideoActivityNotifier& operator=(const VideoActivityNotifier&) = delete;
~VideoActivityNotifier() override;
// VideoDetector::Observer implementation.
void OnVideoStateChanged(VideoDetector::State state) override;
// SessionObserver implementation.
void OnLockStateChanged(bool locked) override;
// If |notify_timer_| is running, calls MaybeNotifyPowerManager() and returns
// true. Returns false otherwise.
[[nodiscard]] bool TriggerTimeoutForTest();
private:
bool should_notify_power_manager() {
return video_state_ != VideoDetector::State::NOT_PLAYING &&
!screen_is_locked_;
}
// Starts or stops |notify_timer_| as needed.
void UpdateTimer();
// Notifies powerd about video activity if should_notify_power_manager() is
// true.
void MaybeNotifyPowerManager();
raw_ptr<VideoDetector> detector_; // not owned
// Most-recently-observed video state.
VideoDetector::State video_state_;
// True if the screen is currently locked.
bool screen_is_locked_;
// Periodically calls MaybeNotifyPowerManager() while
// should_notify_power_manager() is true.
base::RepeatingTimer notify_timer_;
ScopedSessionObserver scoped_session_observer_;
};
} // namespace ash
#endif // ASH_SYSTEM_POWER_VIDEO_ACTIVITY_NOTIFIER_H_
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