juce_FFT.h

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 /*
  ==============================================================================
 
   This file is part of the JUCE library.
   Copyright (c) 2022 - Raw Material Software Limited
 
   JUCE is an open source library subject to commercial or open-source
   licensing.
 
   By using JUCE, you agree to the terms of both the JUCE 7 End-User License
   Agreement and JUCE Privacy Policy.
 
   End User License Agreement: www.juce.com/juce-7-licence
   Privacy Policy: www.juce.com/juce-privacy-policy
 
   Or: You may also use this code under the terms of the GPL v3 (see
   www.gnu.org/licenses).
 
   JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
   EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
   DISCLAIMED.
 
  ==============================================================================
*/
 
namespace juce::dsp
{
 
class JUCE_API  FFT
{
public:
    //==============================================================================
    FFT (int order);
 
    FFT (FFT&&) noexcept;
 
    FFT& operator= (FFT&&) noexcept;
 
    ~FFT();
 
    //==============================================================================
    void perform (const Complex<float>* input, Complex<float>* output, bool inverse) const noexcept;
 
    void performRealOnlyForwardTransform (float* inputOutputData,
                                          bool onlyCalculateNonNegativeFrequencies = false) const noexcept;
 
    void performRealOnlyInverseTransform (float* inputOutputData) const noexcept;
 
    void performFrequencyOnlyForwardTransform (float* inputOutputData,
                                               bool onlyCalculateNonNegativeFrequencies = false) const noexcept;
 
    int getSize() const noexcept            { return size; }
 
    //==============================================================================
   #ifndef DOXYGEN
    /* internal */
    struct Instance;
    template <typename> struct EngineImpl;
   #endif
 
private:
    //==============================================================================
    struct Engine;
 
    std::unique_ptr<Instance> engine;
    int size;
 
    //==============================================================================
    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (FFT)
};
 
} // namespace juce::dsp