OpenShot Audio Library | OpenShotAudio  0.3.0
juce_WaveShaper.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  By using JUCE, you agree to the terms of both the JUCE 5 End-User License
11  Agreement and JUCE 5 Privacy Policy (both updated and effective as of the
12  27th April 2017).
13 
14  End User License Agreement: www.juce.com/juce-5-licence
15  Privacy Policy: www.juce.com/juce-5-privacy-policy
16 
17  Or: You may also use this code under the terms of the GPL v3 (see
18  www.gnu.org/licenses).
19 
20  JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
21  EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
22  DISCLAIMED.
23 
24  ==============================================================================
25 */
26 
27 namespace juce
28 {
29 namespace dsp
30 {
31 
37 template <typename FloatType, typename Function = FloatType (*) (FloatType)>
38 struct WaveShaper
39 {
40  Function functionToUse;
41 
42  //==============================================================================
44  void prepare (const ProcessSpec&) noexcept {}
45 
46  //==============================================================================
48  template <typename SampleType>
49  SampleType JUCE_VECTOR_CALLTYPE processSample (SampleType inputSample) const noexcept
50  {
51  return functionToUse (inputSample);
52  }
53 
55  template <typename ProcessContext>
56  void process (const ProcessContext& context) const noexcept
57  {
58  if (context.isBypassed)
59  {
60  if (context.usesSeparateInputAndOutputBlocks())
61  context.getOutputBlock().copyFrom (context.getInputBlock());
62  }
63  else
64  {
65  AudioBlock<FloatType>::process (context.getInputBlock(),
66  context.getOutputBlock(),
67  functionToUse);
68  }
69  }
70 
71  void reset() noexcept {}
72 };
73 
74 //==============================================================================
75 // Although clang supports C++17, their standard library still has no invoke_result
76 // support. Remove the "|| JUCE_CLANG" once clang supports this properly!
77 #if (! JUCE_CXX17_IS_AVAILABLE) || JUCE_CLANG
78 template <typename Functor>
79 static WaveShaper<typename std::result_of<Functor>, Functor> CreateWaveShaper (Functor functionToUse) { return {functionToUse}; }
80 #else
81 template <typename Functor>
82 static WaveShaper<typename std::invoke_result<Functor>, Functor> CreateWaveShaper (Functor functionToUse) { return {functionToUse}; }
83 #endif
84 
85 } // namespace dsp
86 } // namespace juce
static void process(AudioBlock< Src1SampleType > inBlock, AudioBlock< Src2SampleType > outBlock, FunctionType &&function)
void prepare(const ProcessSpec &) noexcept
void process(const ProcessContext &context) const noexcept
SampleType JUCE_VECTOR_CALLTYPE processSample(SampleType inputSample) const noexcept