rusty_link 0.4.9

Rust bindings for Ableton Link through the official C Wrapper (abl_link)
Documentation 
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

/* 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

// Make sure to define this before <cmath> is included for Windows
#define _USE_MATH_DEFINES
#include <atomic>
#include <iostream>
#include <math.h>
#include <mutex>
#include <vector>

#include "AudioPlatform.hpp"
#include "LinkAudioRenderer.hpp"

namespace ableton
{
namespace linkaudio
{

template <typename Link>
class AudioEngine
{
public:
  AudioEngine(Link& link);
  void startPlaying();
  void stopPlaying();
  bool isPlaying() const;
  double beatTime() const;
  void setTempo(double tempo);
  double quantum() const;
  void setQuantum(double quantum);
  bool isStartStopSyncEnabled() const;
  void setStartStopSyncEnabled(bool enabled);

  struct EngineData
  {
    double requestedTempo;
    bool requestStart;
    bool requestStop;
    double quantum;
    bool startStopSyncOn;
  };

  void setNumFrames(std::size_t size);
  void setSampleRate(double sampleRate);
  EngineData pullEngineData();
  void renderMetronomeIntoBuffer(typename Link::SessionState sessionState,
                                 double quantum,
                                 std::chrono::microseconds beginHostTime,
                                 std::size_t numSamples);
  void audioCallback(std::chrono::microseconds hostTime, std::size_t numSamples);

  Link& mLink;
  double mSampleRate;
  std::atomic<std::chrono::microseconds> mOutputLatency;
  std::array<std::vector<double>, 2> mBuffers;
  EngineData mSharedEngineData;
  EngineData mLockfreeEngineData;
  std::chrono::microseconds mTimeAtLastClick;
  bool mIsPlaying;
  std::mutex mEngineDataGuard;

  LinkAudioRenderer<Link> mLinkAudioRenderer;
};

} // namespace linkaudio
} // namespace ableton

#include "AudioEngine.ipp"