OpenShot Audio Library | OpenShotAudio  0.3.2
juce_LagrangeInterpolator.h
1 /*
2  ==============================================================================
3 
4  This file is part of the JUCE library.
5  Copyright (c) 2017 - ROLI Ltd.
6 
7  JUCE is an open source library subject to commercial or open-source
8  licensing.
9 
10  The code included in this file is provided under the terms of the ISC license
11  http://www.isc.org/downloads/software-support-policy/isc-license. Permission
12  To use, copy, modify, and/or distribute this software for any purpose with or
13  without fee is hereby granted provided that the above copyright notice and
14  this permission notice appear in all copies.
15 
16  JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
17  EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
18  DISCLAIMED.
19 
20  ==============================================================================
21 */
22 
23 namespace juce
24 {
25 
39 class JUCE_API LagrangeInterpolator
40 {
41 public:
42  LagrangeInterpolator() noexcept;
43  ~LagrangeInterpolator() noexcept;
44 
45  LagrangeInterpolator (LagrangeInterpolator&&) noexcept = default;
46  LagrangeInterpolator& operator= (LagrangeInterpolator&&) noexcept = default;
47 
51  void reset() noexcept;
52 
63  int process (double speedRatio,
64  const float* inputSamples,
65  float* outputSamples,
66  int numOutputSamplesToProduce) noexcept;
67 
83  int process (double speedRatio,
84  const float* inputSamples,
85  float* outputSamples,
86  int numOutputSamplesToProduce,
87  int available,
88  int wrapAround) noexcept;
89 
105  int processAdding (double speedRatio,
106  const float* inputSamples,
107  float* outputSamples,
108  int numOutputSamplesToProduce,
109  float gain) noexcept;
110 
131  int processAdding (double speedRatio,
132  const float* inputSamples,
133  float* outputSamples,
134  int numOutputSamplesToProduce,
135  int available,
136  int wrapAround,
137  float gain) noexcept;
138 
139 private:
140  float lastInputSamples[5];
141  double subSamplePos;
142 
143  JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (LagrangeInterpolator)
144 };
145 
146 } // namespace juce