/usr/include/ableton/util/SampleTiming.hpp is in ableton-link-dev 1.0.0+dfsg-2.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 | /* Copyright 2016, Ableton AG, Berlin. All rights reserved.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* If you would like to incorporate Link into a proprietary software application,
* please contact <link-devs@ableton.com>.
*/
#pragma once
#include <chrono>
namespace ableton
{
namespace util
{
/*! Utility type to convert between time and sample index given the
* time at the beginning of a buffer and the sample rate.
*/
struct SampleTiming
{
double sampleAtTime(std::chrono::microseconds time) const
{
using namespace std::chrono;
return duration_cast<duration<double>>(time - mBufferBegin).count() * mSampleRate;
}
std::chrono::microseconds timeAtSample(const double sample) const
{
using namespace std::chrono;
return mBufferBegin
+ duration_cast<microseconds>(duration<double>{sample / mSampleRate});
}
std::chrono::microseconds mBufferBegin;
double mSampleRate;
};
} // util
} // ableton
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