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32 lines
794 B
C++
32 lines
794 B
C++
// FFT wrapper for the PFFFT library. It is possible to use different wrappers for
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// other FFT libraries or platforms, as long as the CSS complex data format is used.
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#pragma once
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#include <stdint.h>
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#include "SamplesFloat.h"
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struct PFFFT_Setup;
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namespace staffpad::audio {
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class FourierTransform
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{
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public:
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FourierTransform(int32_t newBlockSize);
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~FourierTransform();
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int getSize() const { return static_cast<int>(_blockSize); }
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void forwardReal(const SamplesReal& t, SamplesComplex& c);
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void inverseReal(const SamplesComplex& c, SamplesReal& t);
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private:
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PFFFT_Setup* realFftSpec = nullptr;
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PFFFT_Setup* complexFftSpec = nullptr;
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float* _pffft_scratch = nullptr;
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const int32_t _blockSize;
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int32_t _order = 0;
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};
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} // namespace staffpad::audio
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