1/*
2 * Copyright (C) 2011 Apple Inc. All rights reserved.
3 * Copyright (C) 2017 Sony Interactive Entertainment Inc.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
15 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
16 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
18 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
19 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
20 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
21 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
22 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
23 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
24 * THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include "config.h"
28#include "ClockGeneric.h"
29
30
31namespace PAL {
32
33std::unique_ptr<Clock> Clock::create()
34{
35 return std::make_unique<ClockGeneric>();
36}
37
38ClockGeneric::ClockGeneric()
39 : m_running(false)
40 , m_rate(1)
41 , m_offset(0)
42{
43 m_startTime = m_lastTime = now();
44}
45
46void ClockGeneric::setCurrentTime(double time)
47{
48 m_startTime = m_lastTime = now();
49 m_offset = time;
50}
51
52double ClockGeneric::currentTime() const
53{
54 if (m_running)
55 m_lastTime = now();
56 return ((m_lastTime - m_startTime).seconds() * m_rate) + m_offset;
57}
58
59void ClockGeneric::setPlayRate(double rate)
60{
61 m_offset = currentTime();
62 m_lastTime = m_startTime = now();
63 m_rate = rate;
64}
65
66void ClockGeneric::start()
67{
68 if (m_running)
69 return;
70
71 m_lastTime = m_startTime = now();
72 m_running = true;
73}
74
75void ClockGeneric::stop()
76{
77 if (!m_running)
78 return;
79
80 m_offset = currentTime();
81 m_lastTime = m_startTime = now();
82 m_running = false;
83}
84
85MonotonicTime ClockGeneric::now() const
86{
87 return MonotonicTime::now();
88}
89
90}
91