/* * Copyright (C) 2011 Apple Inc. All rights reserved. * Copyright (C) 2017 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. AND ITS CONTRIBUTORS ``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 ITS 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 "ClockGeneric.h" #include <wtf/CurrentTime.h> namespace PAL { std::unique_ptr<Clock> Clock::create() { return std::make_unique<ClockGeneric>(); } ClockGeneric::ClockGeneric() : m_running(false) , m_rate(1) , m_offset(0) { m_startTime = m_lastTime = now(); } void ClockGeneric::setCurrentTime(double time) { m_startTime = m_lastTime = now(); m_offset = time; } double ClockGeneric::currentTime() const { if (m_running) m_lastTime = now(); return ((m_lastTime - m_startTime) * m_rate) + m_offset; } void ClockGeneric::setPlayRate(double rate) { m_offset = currentTime(); m_lastTime = m_startTime = now(); m_rate = rate; } void ClockGeneric::start() { if (m_running) return; m_lastTime = m_startTime = now(); m_running = true; } void ClockGeneric::stop() { if (!m_running) return; m_offset = currentTime(); m_lastTime = m_startTime = now(); m_running = false; } double ClockGeneric::now() const { return monotonicallyIncreasingTime(); } }