AudioFFT.h

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// ==================================================================================
// Copyright (c) 2017 HiFi-LoFi
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is furnished
// to do so, subject to the following conditions:
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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#ifndef _AUDIOFFT_H
#define _AUDIOFFT_H
 
#include <cstddef>
#include <memory>
 
namespace audiofft
{
 
    namespace detail
    {
        class AudioFFTImpl;
    }
 
    // =============================================================
 
    class AudioFFT
    {
      public:
        AudioFFT();
 
        AudioFFT(const AudioFFT&) = delete;
        AudioFFT& operator=(const AudioFFT&) = delete;
 
        ~AudioFFT();
 
        void init(size_t size);
 
        void fft(const float* data, float* re, float* im);
 
        void ifft(float* data, const float* re, const float* im);
 
        static size_t ComplexSize(size_t size);
 
      private:
        std::unique_ptr<detail::AudioFFTImpl> _impl;
    };
 
    typedef AudioFFT AudioFFTBase;
 
} // namespace audiofft
 
#endif // Header guard