blob: 418e3af79c7a20db38555f3da0a133bff7bb564f [file] [log] [blame]
// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ash/ash_export.h"
#include "ash/session/session_observer.h"
#include "ash/wm/video_detector.h"
#include "base/compiler_specific.h"
#include "base/macros.h"
#include "base/time/time.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 {
explicit VideoActivityNotifier(VideoDetector* detector);
~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.
bool TriggerTimeoutForTest() WARN_UNUSED_RESULT;
bool should_notify_power_manager() {
return video_state_ != VideoDetector::State::NOT_PLAYING &&
// Starts or stops |notify_timer_| as needed.
void UpdateTimer();
// Notifies powerd about video activity if should_notify_power_manager() is
// true.
void MaybeNotifyPowerManager();
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