OpenShot Audio Library | OpenShotAudio  0.3.1
juce_Convolution.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 
50 class JUCE_API Convolution
51 {
52 public:
53  //==============================================================================
55  Convolution();
56 
58  ~Convolution();
59 
60  //==============================================================================
65  void prepare (const ProcessSpec&);
66 
68  void reset() noexcept;
69 
73  template <typename ProcessContext>
74  void process (const ProcessContext& context) noexcept
75  {
76  static_assert (std::is_same<typename ProcessContext::SampleType, float>::value,
77  "Convolution engine only supports single precision floating point data");
78 
79  processSamples (context.getInputBlock(), context.getOutputBlock(), context.isBypassed);
80  }
81 
82  //==============================================================================
101  void loadImpulseResponse (const void* sourceData, size_t sourceDataSize,
102  bool wantsStereo, bool wantsTrimming, size_t size,
103  bool wantsNormalisation = true);
104 
116  void loadImpulseResponse (const File& fileImpulseResponse,
117  bool wantsStereo, bool wantsTrimming, size_t size,
118  bool wantsNormalisation = true);
119 
132  void copyAndLoadImpulseResponseFromBuffer (AudioBuffer<float>& buffer, double bufferSampleRate,
133  bool wantsStereo, bool wantsTrimming, bool wantsNormalisation,
134  size_t size);
135 
148  void copyAndLoadImpulseResponseFromBlock (AudioBlock<float> block, double bufferSampleRate,
149  bool wantsStereo, bool wantsTrimming, bool wantsNormalisation,
150  size_t size);
151 
152 
153 private:
154  //==============================================================================
155  struct Pimpl;
156  std::unique_ptr<Pimpl> pimpl;
157 
158  //==============================================================================
159  void processSamples (const AudioBlock<const float>&, AudioBlock<float>&, bool isBypassed) noexcept;
160 
161  //==============================================================================
162  double sampleRate;
163  bool currentIsBypassed = false;
164  bool isActive = false;
165  SmoothedValue<float> volumeDry[2], volumeWet[2];
166  AudioBlock<float> dryBuffer;
167  HeapBlock<char> dryBufferStorage;
168 
169  //==============================================================================
170  JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (Convolution)
171 };
172 
173 } // namespace dsp
174 } // namespace juce
void process(const ProcessContext &context) noexcept