53 lines
1.6 KiB
C++
53 lines
1.6 KiB
C++
/* Copyright 2016, Ableton AG, Berlin. All rights reserved.
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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
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* If you would like to incorporate Link into a proprietary software application,
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* please contact <link-devs@ableton.com>.
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*/
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#pragma once
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#include <chrono>
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namespace ableton
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{
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namespace util
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{
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/*! Utility type to convert between time and sample index given the
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* time at the beginning of a buffer and the sample rate.
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*/
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struct SampleTiming
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{
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double sampleAtTime(std::chrono::microseconds time) const
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{
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using namespace std::chrono;
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return duration_cast<duration<double>>(time - mBufferBegin).count() * mSampleRate;
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}
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std::chrono::microseconds timeAtSample(const double sample) const
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{
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using namespace std::chrono;
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return mBufferBegin
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+ duration_cast<microseconds>(duration<double>{sample / mSampleRate});
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}
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std::chrono::microseconds mBufferBegin;
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double mSampleRate;
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};
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} // namespace util
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} // namespace ableton
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