| /* |
| * Copyright (C) 2020 Sony Interactive Entertainment Inc. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "DisplayRefreshMonitorWin.h" |
| |
| namespace WebCore { |
| |
| constexpr FramesPerSecond DefaultFramesPerSecond = 60; |
| |
| RefPtr<DisplayRefreshMonitorWin> DisplayRefreshMonitorWin::create(PlatformDisplayID displayID) |
| { |
| return adoptRef(*new DisplayRefreshMonitorWin(displayID)); |
| } |
| |
| DisplayRefreshMonitorWin::DisplayRefreshMonitorWin(PlatformDisplayID displayID) |
| : DisplayRefreshMonitor(displayID) |
| , m_timer(RunLoop::main(), this, &DisplayRefreshMonitorWin::displayLinkCallbackFired) |
| , m_currentUpdate({ 0, DefaultFramesPerSecond }) |
| { |
| } |
| |
| void DisplayRefreshMonitorWin::displayLinkCallbackFired() |
| { |
| displayLinkFired(m_currentUpdate); |
| m_currentUpdate = m_currentUpdate.nextUpdate(); |
| } |
| |
| bool DisplayRefreshMonitorWin::startNotificationMechanism() |
| { |
| if (!m_timer.isActive()) |
| m_timer.startRepeating(16_ms); |
| |
| return true; |
| } |
| |
| void DisplayRefreshMonitorWin::stopNotificationMechanism() |
| { |
| m_timer.stop(); |
| } |
| |
| } // namespace WebCore |
