/usr/include/ableton/link/Timeline.hpp is in ableton-link-dev 1.0.0+dfsg-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 | /* 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 <ableton/discovery/NetworkByteStreamSerializable.hpp>
#include <ableton/link/Beats.hpp>
#include <ableton/link/Tempo.hpp>
#include <cmath>
#include <cstdint>
#include <tuple>
namespace ableton
{
namespace link
{
// A tuple of (tempo, beats, time), with integral units
// based on microseconds. This type establishes a bijection between
// beats and wall time, given a valid tempo. It also serves as a
// payload entry.
struct Timeline
{
enum
{
key = 'tmln'
};
Beats toBeats(const std::chrono::microseconds time) const
{
return beatOrigin + tempo.microsToBeats(time - timeOrigin);
}
std::chrono::microseconds fromBeats(const Beats beats) const
{
return timeOrigin + tempo.beatsToMicros(beats - beatOrigin);
}
friend bool operator==(const Timeline& lhs, const Timeline& rhs)
{
return std::tie(lhs.tempo, lhs.beatOrigin, lhs.timeOrigin)
== std::tie(rhs.tempo, rhs.beatOrigin, rhs.timeOrigin);
}
friend bool operator!=(const Timeline& lhs, const Timeline& rhs)
{
return !(lhs == rhs);
}
// Model the NetworkByteStreamSerializable concept
friend std::uint32_t sizeInByteStream(const Timeline& tl)
{
return discovery::sizeInByteStream(std::tie(tl.tempo, tl.beatOrigin, tl.timeOrigin));
}
template <typename It>
friend It toNetworkByteStream(const Timeline& tl, It out)
{
return discovery::toNetworkByteStream(
std::tie(tl.tempo, tl.beatOrigin, tl.timeOrigin), std::move(out));
}
template <typename It>
static std::pair<Timeline, It> fromNetworkByteStream(It begin, It end)
{
using namespace std;
using namespace discovery;
Timeline timeline;
auto result =
Deserialize<tuple<Tempo, Beats, chrono::microseconds>>::fromNetworkByteStream(
move(begin), move(end));
tie(timeline.tempo, timeline.beatOrigin, timeline.timeOrigin) = move(result.first);
return make_pair(move(timeline), move(result.second));
}
Tempo tempo;
Beats beatOrigin;
std::chrono::microseconds timeOrigin;
};
} // namespace link
} // namespace ableton
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