blob: f98f035495bdb59beeeb61c138d19b3cd152a5f9 [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/system/power/video_activity_notifier.h"
#include "ash/session/session_controller.h"
#include "ash/shell.h"
#include "chromeos/dbus/dbus_thread_manager.h"
#include "chromeos/dbus/power_manager_client.h"
namespace ash {
namespace {
// Minimum number of seconds between repeated notifications of the same state.
// This should be less than powerd's timeout for determining whether video is
// still active for the purposes of controlling the keyboard backlight.
const int kNotifyIntervalSec = 5;
} // namespace
VideoActivityNotifier::VideoActivityNotifier(VideoDetector* detector)
: detector_(detector),
video_state_(detector->state()),
screen_is_locked_(Shell::Get()->session_controller()->IsScreenLocked()),
scoped_session_observer_(this) {
detector_->AddObserver(this);
MaybeNotifyPowerManager();
UpdateTimer();
}
VideoActivityNotifier::~VideoActivityNotifier() {
detector_->RemoveObserver(this);
}
void VideoActivityNotifier::OnVideoStateChanged(VideoDetector::State state) {
if (video_state_ != state) {
video_state_ = state;
MaybeNotifyPowerManager();
UpdateTimer();
}
}
void VideoActivityNotifier::OnLockStateChanged(bool locked) {
if (screen_is_locked_ == locked)
return;
screen_is_locked_ = locked;
MaybeNotifyPowerManager();
UpdateTimer();
}
bool VideoActivityNotifier::TriggerTimeoutForTest() {
if (!notify_timer_.IsRunning())
return false;
MaybeNotifyPowerManager();
return true;
}
void VideoActivityNotifier::UpdateTimer() {
if (!should_notify_power_manager()) {
notify_timer_.Stop();
} else {
notify_timer_.Start(FROM_HERE,
base::TimeDelta::FromSeconds(kNotifyIntervalSec), this,
&VideoActivityNotifier::MaybeNotifyPowerManager);
}
}
void VideoActivityNotifier::MaybeNotifyPowerManager() {
if (should_notify_power_manager()) {
chromeos::PowerManagerClient::Get()->NotifyVideoActivity(
video_state_ == VideoDetector::State::PLAYING_FULLSCREEN);
}
}
} // namespace ash