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ClockGeneric.cpp
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90 lines (76 loc) · 2.41 KB
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/*
* 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"
namespace PAL {
std::unique_ptr<Clock> Clock::create()
{
return makeUnique<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).seconds() * 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;
}
MonotonicTime ClockGeneric::now() const
{
return MonotonicTime::now();
}
}