NE10_fft.h File Reference

#include "NE10_dsp.h"
#include "NE10_types.h"
#include "NE10_fft_common_varibles.h"
#include "NE10_fft_cplx_ops.h"
#include "NE10_fft_bfly.h"
#include "NE10_fft_debug_macro.h"

Go to the source code of this file.

Macros
#define	NE10_FFT_BYTE_ALIGNMENT   8
#define	NE10_INLINE   inline static
#define	NE10_FFT_ALG_DEFAULT   0
#define	NE10_FFT_ALG_ANY   1
#define	NE10_FACTOR_DEFAULT   0
#define	NE10_FACTOR_EIGHT_FIRST_STAGE   1
#define	NE10_FACTOR_EIGHT   2
#define	NE10_DSP_RFFT_SCALING
#define	NE10_DSP_CFFT_SCALING
#define	NE10_FFT_PARA_LEVEL   4

Functions
ne10_int32_t	ne10_factor (ne10_int32_t n, ne10_int32_t *facbuf, ne10_int32_t ne10_factor_flags)
ne10_fft_cpx_float32_t *	ne10_fft_generate_twiddles_float32 (ne10_fft_cpx_float32_t *twiddles, const ne10_int32_t *factors, const ne10_int32_t nfft)
ne10_fft_cpx_float32_t *	ne10_fft_generate_twiddles_transposed_float32 (ne10_fft_cpx_float32_t *twiddles, const ne10_int32_t *factors, const ne10_int32_t nfft)
ne10_fft_cpx_int32_t *	ne10_fft_generate_twiddles_int32 (ne10_fft_cpx_int32_t *twiddles, const ne10_int32_t *factors, const ne10_int32_t nfft)
void	ne10_mixed_radix_generic_butterfly_float32_c (ne10_fft_cpx_float32_t *Fout, const ne10_fft_cpx_float32_t *Fin, const ne10_int32_t *factors, const ne10_fft_cpx_float32_t *twiddles, ne10_fft_cpx_float32_t *buffer, const ne10_int32_t is_scaled)
void	ne10_mixed_radix_generic_butterfly_inverse_float32_c (ne10_fft_cpx_float32_t *Fout, const ne10_fft_cpx_float32_t *Fin, const ne10_int32_t *factors, const ne10_fft_cpx_float32_t *twiddles, ne10_fft_cpx_float32_t *buffer, const ne10_int32_t is_scaled)
void	ne10_mixed_radix_generic_butterfly_float32_neon (ne10_fft_cpx_float32_t *Fout, const ne10_fft_cpx_float32_t *Fin, const ne10_int32_t *factors, const ne10_fft_cpx_float32_t *twiddles, ne10_fft_cpx_float32_t *buffer, const ne10_int32_t is_scaled)
void	ne10_mixed_radix_generic_butterfly_inverse_float32_neon (ne10_fft_cpx_float32_t *Fout, const ne10_fft_cpx_float32_t *Fin, const ne10_int32_t *factors, const ne10_fft_cpx_float32_t *twiddles, ne10_fft_cpx_float32_t *buffer, const ne10_int32_t is_scaled)
void	ne10_mixed_radix_fft_forward_float32_neon (ne10_fft_cpx_float32_t *Fout, ne10_fft_cpx_float32_t *Fin, ne10_int32_t *factors, ne10_fft_cpx_float32_t *twiddles, ne10_fft_cpx_float32_t *buffer) asm("ne10_mixed_radix_fft_forward_float32_neon")
void	ne10_mixed_radix_fft_backward_float32_neon (ne10_fft_cpx_float32_t *Fout, ne10_fft_cpx_float32_t *Fin, ne10_int32_t *factors, ne10_fft_cpx_float32_t *twiddles, ne10_fft_cpx_float32_t *buffer) asm("ne10_mixed_radix_fft_backward_float32_neon")
void	ne10_mixed_radix_generic_butterfly_int32_c (ne10_fft_cpx_int32_t *Fout, const ne10_fft_cpx_int32_t *Fin, const ne10_int32_t *factors, const ne10_fft_cpx_int32_t *twiddles, ne10_fft_cpx_int32_t *buffer, const ne10_int32_t scaled_flag)
	Generic (forward) FFT function for 32-bit fixed point. More...
void	ne10_mixed_radix_generic_butterfly_inverse_int32_c (ne10_fft_cpx_int32_t *Fout, const ne10_fft_cpx_int32_t *Fin, const ne10_int32_t *factors, const ne10_fft_cpx_int32_t *twiddles, ne10_fft_cpx_int32_t *buffer, const ne10_int32_t scaled_flag)
	Generic IFFT function for 32-bit fixed point. More...
void	ne10_mixed_radix_generic_butterfly_int32_neon (ne10_fft_cpx_int32_t *Fout, const ne10_fft_cpx_int32_t *Fin, const ne10_int32_t *factors, const ne10_fft_cpx_int32_t *twiddles, ne10_fft_cpx_int32_t *buffer, const ne10_int32_t scaled_flag)
void	ne10_mixed_radix_generic_butterfly_inverse_int32_neon (ne10_fft_cpx_int32_t *Fout, const ne10_fft_cpx_int32_t *Fin, const ne10_int32_t *factors, const ne10_fft_cpx_int32_t *twiddles, ne10_fft_cpx_int32_t *buffer, const ne10_int32_t scaled_flag)
void	ne10_mixed_radix_fft_forward_int32_unscaled_neon (ne10_fft_cpx_int32_t *Fout, ne10_fft_cpx_int32_t *fin, ne10_int32_t *factors, ne10_fft_cpx_int32_t *twiddles, ne10_fft_cpx_int32_t *buffer) asm("ne10_mixed_radix_fft_forward_int32_unscaled_neon")
void	ne10_mixed_radix_fft_backward_int32_unscaled_neon (ne10_fft_cpx_int32_t *Fout, ne10_fft_cpx_int32_t *fin, ne10_int32_t *factors, ne10_fft_cpx_int32_t *twiddles, ne10_fft_cpx_int32_t *buffer) asm("ne10_mixed_radix_fft_backward_int32_unscaled_neon")
void	ne10_mixed_radix_fft_forward_int32_scaled_neon (ne10_fft_cpx_int32_t *Fout, ne10_fft_cpx_int32_t *fin, ne10_int32_t *factors, ne10_fft_cpx_int32_t *twiddles, ne10_fft_cpx_int32_t *buffer) asm("ne10_mixed_radix_fft_forward_int32_scaled_neon")
void	ne10_mixed_radix_fft_backward_int32_scaled_neon (ne10_fft_cpx_int32_t *Fout, ne10_fft_cpx_int32_t *fin, ne10_int32_t *factors, ne10_fft_cpx_int32_t *twiddles, ne10_fft_cpx_int32_t *buffer) asm("ne10_mixed_radix_fft_backward_int32_scaled_neon")
void	ne10_mixed_radix_fft_forward_int16_unscaled_neon (ne10_fft_cpx_int16_t *Fout, ne10_fft_cpx_int16_t *fin, ne10_int32_t *factors, ne10_fft_cpx_int16_t *twiddles, ne10_fft_cpx_int16_t *buffer) asm("ne10_mixed_radix_fft_forward_int16_unscaled_neon")
void	ne10_mixed_radix_fft_backward_int16_unscaled_neon (ne10_fft_cpx_int16_t *Fout, ne10_fft_cpx_int16_t *fin, ne10_int32_t *factors, ne10_fft_cpx_int16_t *twiddles, ne10_fft_cpx_int16_t *buffer) asm("ne10_mixed_radix_fft_backward_int16_unscaled_neon")
void	ne10_mixed_radix_fft_forward_int16_scaled_neon (ne10_fft_cpx_int16_t *Fout, ne10_fft_cpx_int16_t *fin, ne10_int32_t *factors, ne10_fft_cpx_int16_t *twiddles, ne10_fft_cpx_int16_t *buffer) asm("ne10_mixed_radix_fft_forward_int16_scaled_neon")
void	ne10_mixed_radix_fft_backward_int16_scaled_neon (ne10_fft_cpx_int16_t *Fout, ne10_fft_cpx_int16_t *fin, ne10_int32_t *factors, ne10_fft_cpx_int16_t *twiddles, ne10_fft_cpx_int16_t *buffer) asm("ne10_mixed_radix_fft_backward_int16_scaled_neon")

Macro Definition Documentation

#define NE10_DSP_CFFT_SCALING

Definition at line 77 of file NE10_fft.h.

#define NE10_DSP_RFFT_SCALING

Definition at line 76 of file NE10_fft.h.

#define NE10_FACTOR_DEFAULT   0

Definition at line 71 of file NE10_fft.h.

#define NE10_FACTOR_EIGHT   2

Definition at line 73 of file NE10_fft.h.

#define NE10_FACTOR_EIGHT_FIRST_STAGE   1

Definition at line 72 of file NE10_fft.h.

#define NE10_FFT_ALG_ANY   1

Definition at line 58 of file NE10_fft.h.

#define NE10_FFT_ALG_DEFAULT   0

Definition at line 57 of file NE10_fft.h.

#define NE10_FFT_BYTE_ALIGNMENT   8

Definition at line 45 of file NE10_fft.h.

#define NE10_FFT_PARA_LEVEL   4

Definition at line 79 of file NE10_fft.h.

#define NE10_INLINE   inline static

Definition at line 46 of file NE10_fft.h.

Function Documentation

ne10_int32_t ne10_factor	(	ne10_int32_t	n,
		ne10_int32_t *	facbuf,
		ne10_int32_t	ne10_factor_flags
	)

Definition at line 71 of file NE10_fft.c.

ne10_fft_cpx_float32_t* ne10_fft_generate_twiddles_float32	(	ne10_fft_cpx_float32_t *	twiddles,
		const ne10_int32_t *	factors,
		const ne10_int32_t	nfft
	)

Definition at line 320 of file NE10_fft.c.

ne10_fft_cpx_int32_t* ne10_fft_generate_twiddles_int32	(	ne10_fft_cpx_int32_t *	twiddles,
		const ne10_int32_t *	factors,
		const ne10_int32_t	nfft
	)

Definition at line 246 of file NE10_fft.c.

ne10_fft_cpx_float32_t* ne10_fft_generate_twiddles_transposed_float32	(	ne10_fft_cpx_float32_t *	twiddles,
		const ne10_int32_t *	factors,
		const ne10_int32_t	nfft
	)

Definition at line 330 of file NE10_fft.c.

void ne10_mixed_radix_fft_backward_float32_neon	(	ne10_fft_cpx_float32_t *	Fout,
		ne10_fft_cpx_float32_t *	Fin,
		ne10_int32_t *	factors,
		ne10_fft_cpx_float32_t *	twiddles,
		ne10_fft_cpx_float32_t *	buffer
	)

Definition at line 1361 of file NE10_fft_float32.neonintrinsic.c.

void ne10_mixed_radix_fft_backward_int16_scaled_neon	(	ne10_fft_cpx_int16_t *	Fout,
		ne10_fft_cpx_int16_t *	fin,
		ne10_int32_t *	factors,
		ne10_fft_cpx_int16_t *	twiddles,
		ne10_fft_cpx_int16_t *	buffer
	)

void ne10_mixed_radix_fft_backward_int16_unscaled_neon	(	ne10_fft_cpx_int16_t *	Fout,
		ne10_fft_cpx_int16_t *	fin,
		ne10_int32_t *	factors,
		ne10_fft_cpx_int16_t *	twiddles,
		ne10_fft_cpx_int16_t *	buffer
	)

void ne10_mixed_radix_fft_backward_int32_scaled_neon	(	ne10_fft_cpx_int32_t *	Fout,
		ne10_fft_cpx_int32_t *	fin,
		ne10_int32_t *	factors,
		ne10_fft_cpx_int32_t *	twiddles,
		ne10_fft_cpx_int32_t *	buffer
	)

void ne10_mixed_radix_fft_backward_int32_unscaled_neon	(	ne10_fft_cpx_int32_t *	Fout,
		ne10_fft_cpx_int32_t *	fin,
		ne10_int32_t *	factors,
		ne10_fft_cpx_int32_t *	twiddles,
		ne10_fft_cpx_int32_t *	buffer
	)

void ne10_mixed_radix_fft_forward_float32_neon	(	ne10_fft_cpx_float32_t *	Fout,
		ne10_fft_cpx_float32_t *	Fin,
		ne10_int32_t *	factors,
		ne10_fft_cpx_float32_t *	twiddles,
		ne10_fft_cpx_float32_t *	buffer
	)

Definition at line 1275 of file NE10_fft_float32.neonintrinsic.c.

void ne10_mixed_radix_fft_forward_int16_scaled_neon	(	ne10_fft_cpx_int16_t *	Fout,
		ne10_fft_cpx_int16_t *	fin,
		ne10_int32_t *	factors,
		ne10_fft_cpx_int16_t *	twiddles,
		ne10_fft_cpx_int16_t *	buffer
	)

void ne10_mixed_radix_fft_forward_int16_unscaled_neon	(	ne10_fft_cpx_int16_t *	Fout,
		ne10_fft_cpx_int16_t *	fin,
		ne10_int32_t *	factors,
		ne10_fft_cpx_int16_t *	twiddles,
		ne10_fft_cpx_int16_t *	buffer
	)

void ne10_mixed_radix_fft_forward_int32_scaled_neon	(	ne10_fft_cpx_int32_t *	Fout,
		ne10_fft_cpx_int32_t *	fin,
		ne10_int32_t *	factors,
		ne10_fft_cpx_int32_t *	twiddles,
		ne10_fft_cpx_int32_t *	buffer
	)

void ne10_mixed_radix_fft_forward_int32_unscaled_neon	(	ne10_fft_cpx_int32_t *	Fout,
		ne10_fft_cpx_int32_t *	fin,
		ne10_int32_t *	factors,
		ne10_fft_cpx_int32_t *	twiddles,
		ne10_fft_cpx_int32_t *	buffer
	)

void ne10_mixed_radix_generic_butterfly_float32_c	(	ne10_fft_cpx_float32_t *	Fout,
		const ne10_fft_cpx_float32_t *	Fin,
		const ne10_int32_t *	factors,
		const ne10_fft_cpx_float32_t *	twiddles,
		ne10_fft_cpx_float32_t *	buffer,
		const ne10_int32_t	is_scaled
	)

Definition at line 713 of file NE10_fft_generic_float32.c.

void ne10_mixed_radix_generic_butterfly_float32_neon	(	ne10_fft_cpx_float32_t *	Fout,
		const ne10_fft_cpx_float32_t *	Fin,
		const ne10_int32_t *	factors,
		const ne10_fft_cpx_float32_t *	twiddles,
		ne10_fft_cpx_float32_t *	buffer,
		const ne10_int32_t	is_scaled
	)

Definition at line 1581 of file NE10_fft_generic_float32.neonintrinsic.cpp.

void ne10_mixed_radix_generic_butterfly_int32_c	(	ne10_fft_cpx_int32_t *	Fout,
		const ne10_fft_cpx_int32_t *	Fin,
		const ne10_int32_t *	factors,
		const ne10_fft_cpx_int32_t *	twiddles,
		ne10_fft_cpx_int32_t *	buffer,
		const ne10_int32_t	is_scaled
	)

Generic (forward) FFT function for 32-bit fixed point.

Parameters

[out]	Fout	Pointing to output buffer.
[in]	Fin	Pointing to input buffer.
[in]	factors	Pointing to factors buffer.
[in]	twiddles	Pointing to twiddles buffer.
[in]	buffer	Pointing to temp buffer so that Fin is not polluted.
[in]	is_scaled	Whether output is scaled by size of FFT.

Definition at line 343 of file NE10_fft_generic_int32.cpp.

void ne10_mixed_radix_generic_butterfly_int32_neon	(	ne10_fft_cpx_int32_t *	Fout,
		const ne10_fft_cpx_int32_t *	Fin,
		const ne10_int32_t *	factors,
		const ne10_fft_cpx_int32_t *	twiddles,
		ne10_fft_cpx_int32_t *	buffer,
		const ne10_int32_t	scaled_flag
	)

Definition at line 112 of file NE10_fft_generic_int32.neonintrinsic.cpp.

void ne10_mixed_radix_generic_butterfly_inverse_float32_c	(	ne10_fft_cpx_float32_t *	Fout,
		const ne10_fft_cpx_float32_t *	Fin,
		const ne10_int32_t *	factors,
		const ne10_fft_cpx_float32_t *	twiddles,
		ne10_fft_cpx_float32_t *	buffer,
		const ne10_int32_t	is_scaled
	)

Definition at line 734 of file NE10_fft_generic_float32.c.

void ne10_mixed_radix_generic_butterfly_inverse_float32_neon	(	ne10_fft_cpx_float32_t *	Fout,
		const ne10_fft_cpx_float32_t *	Fin,
		const ne10_int32_t *	factors,
		const ne10_fft_cpx_float32_t *	twiddles,
		ne10_fft_cpx_float32_t *	buffer,
		const ne10_int32_t	is_scaled
	)

Definition at line 1622 of file NE10_fft_generic_float32.neonintrinsic.cpp.

void ne10_mixed_radix_generic_butterfly_inverse_int32_c	(	ne10_fft_cpx_int32_t *	Fout,
		const ne10_fft_cpx_int32_t *	Fin,
		const ne10_int32_t *	factors,
		const ne10_fft_cpx_int32_t *	twiddles,
		ne10_fft_cpx_int32_t *	buffer,
		const ne10_int32_t	is_scaled
	)

Generic IFFT function for 32-bit fixed point.

Parameters

[out]	Fout	Pointing to output buffer.
[in]	Fin	Pointing to input buffer.
[in]	factors	Pointing to factors buffer.
[in]	twiddles	Pointing to twiddles buffer.
[in]	buffer	Pointing to temp buffer so that Fin is not polluted.
[in]	is_scaled	Whether output is scaled by size of FFT.

Definition at line 374 of file NE10_fft_generic_int32.cpp.

void ne10_mixed_radix_generic_butterfly_inverse_int32_neon	(	ne10_fft_cpx_int32_t *	Fout,
		const ne10_fft_cpx_int32_t *	Fin,
		const ne10_int32_t *	factors,
		const ne10_fft_cpx_int32_t *	twiddles,
		ne10_fft_cpx_int32_t *	buffer,
		const ne10_int32_t	scaled_flag
	)

Definition at line 124 of file NE10_fft_generic_int32.neonintrinsic.cpp.