49 lines
1.4 KiB
C
49 lines
1.4 KiB
C
#ifndef INCLUDED_C_FFT_H
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#define INCLUDED_C_FFT_H
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#ifndef INCLUDED_C_TYPES_H
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#include <c_Types.h>
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#endif /*INCLUDED_C_TYPES_H*/
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#ifndef INCLUDED_C_ALLOCATOR_H
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#include <c_Allocator.h>
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#endif /*INCLUDED_C_ALLOCATOR_H*/
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#ifndef INCLUDED_C_COMPLEX_H
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#include <c_Complex.h>
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#endif /*INCLUDED_C_COMPLEX_H*/
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/* ------------------------------------------------------------------------------------------------------------------ */
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/* */
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typedef struct {
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c_size_t N; /* Length of the signal buffer (Must be a power of 2) */
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c_Allocator_t allocator; /* Deep copy of the user-provided allocator */
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} c_FFT_t;
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/* ------------------------------------------------------------------------------------------------------------------ */
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/* */
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/**
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* @brief Initializes the FFT calculation engine context.
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* @param N Total number of signal sample points (Must be a strict power of 2)
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*/
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c_err_t c_FFT_Init(c_FFT_t* self, c_size_t N, c_Allocator_t* allocator);
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/**
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* @brief Releases internal tracking engine allocations.
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*/
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void c_FFT_Destroy(c_FFT_t* self);
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/**
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* @brief Non-recursively executes the forward or inverse FFT in-place.
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* @param signal Array of complex samples of size self->N (Modified in-place)
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* @param inverse Set to C_TRUE for Inverse FFT (IFFT), C_FALSE for Forward FFT
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*/
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c_err_t c_FFT_Execute(const c_FFT_t* self, c_Complex_t* signal, c_bool_t inverse);
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#endif /*INCLUDED_C_FFT_H*/
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