chrome/browser/chromeos/power/video_activity_notifier.cc

   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
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/chromeos/power/video_activity_notifier.h"
   6
   7 #include "ash/shell.h"
   8 #include "chromeos/dbus/dbus_thread_manager.h"
   9 #include "chromeos/dbus/power_manager_client.h"
  10
  11 namespace {
  12
  13 // Minimum number of seconds between notifications.
  14 const int kNotifyIntervalSec = 5;
  15
  16 }  // namespace
  17
  18 namespace chromeos {
  19
  20 VideoActivityNotifier::VideoActivityNotifier() {
  21   ash::Shell::GetInstance()->video_detector()->AddObserver(this);
  22 }
  23
  24 VideoActivityNotifier::~VideoActivityNotifier() {
  25   ash::Shell::GetInstance()->video_detector()->RemoveObserver(this);
  26 }
  27
  28 void VideoActivityNotifier::OnVideoDetected(bool is_fullscreen) {
  29   base::TimeTicks now = base::TimeTicks::Now();
  30   if (last_notify_time_.is_null() ||
  31       (now - last_notify_time_).InSeconds() >= kNotifyIntervalSec) {
  32     DBusThreadManager::Get()->GetPowerManagerClient()->
  33         NotifyVideoActivity(now, is_fullscreen);
  34     last_notify_time_ = now;
  35   }
  36 }
  37
  38 }  // namespace chromeos