55 lines
1.4 KiB
C++
55 lines
1.4 KiB
C++
/*
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* Copyright 2003-2017 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef MPD_TIMER_HXX
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#define MPD_TIMER_HXX
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#include <chrono>
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struct AudioFormat;
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class Timer {
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typedef std::chrono::microseconds Time;
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Time time;
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bool started = false;
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const int rate;
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public:
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explicit Timer(AudioFormat af);
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bool IsStarted() const { return started; }
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void Start();
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void Reset();
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void Add(size_t size);
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/**
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* Returns the duration to sleep to get back to sync.
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*/
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std::chrono::steady_clock::duration GetDelay() const;
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private:
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static Time Now() {
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return std::chrono::duration_cast<Time>(std::chrono::steady_clock::now().time_since_epoch());
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}
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};
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#endif
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