pffft.h File Reference

#include <stddef.h>

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Macros
#define	PFFFT_FLOAT   float

Typedefs
typedef struct PFFFT_Setup	PFFFT_Setup

Enumerations
enum	pffft_direction_t { PFFFT_FORWARD , PFFFT_BACKWARD }
enum	pffft_transform_t { PFFFT_REAL , PFFFT_COMPLEX }

Functions
PFFFT_Setup *	pffft_new_setup (int N, pffft_transform_t transform)
void	pffft_destroy_setup (PFFFT_Setup *)
void	pffft_transform (PFFFT_Setup *setup, const PFFFT_FLOAT *input, PFFFT_FLOAT *output, PFFFT_FLOAT *work, pffft_direction_t direction)
void	pffft_transform_ordered (PFFFT_Setup *setup, const PFFFT_FLOAT *input, PFFFT_FLOAT *output, PFFFT_FLOAT *work, pffft_direction_t direction)
void	pffft_zreorder (PFFFT_Setup *setup, const PFFFT_FLOAT *input, PFFFT_FLOAT *output, pffft_direction_t direction)
void	pffft_zconvolve_accumulate (PFFFT_Setup *setup, const PFFFT_FLOAT *dft_a, const PFFFT_FLOAT *dft_b, PFFFT_FLOAT *dft_ab, PFFFT_FLOAT scaling)
void	pffft_zconvolve_no_accu (PFFFT_Setup *setup, const float *dft_a, const float *dft_b, float *dft_ab, float scaling)
int	pffft_min_fft_size (pffft_transform_t transform)
int	pffft_next_power_of_two (int N)
int	pffft_is_power_of_two (int N)
void *	pffft_aligned_malloc (size_t nb_bytes)
void	pffft_aligned_free (void *)
int	pffft_simd_size (void)

Macro Definition Documentation

PFFFT_FLOAT

#define PFFFT_FLOAT   float

Definition at line 84 of file pffft.h.

Typedef Documentation

PFFFT_Setup

typedef struct PFFFT_Setup PFFFT_Setup

Definition at line 103 of file pffft.h.

Enumeration Type Documentation

pffft_direction_t

enum pffft_direction_t

Enumerator
PFFFT_FORWARD
PFFFT_BACKWARD

Definition at line 106 of file pffft.h.

{ PFFFT_FORWARD, PFFFT_BACKWARD } pffft_direction_t;

pffft_transform_t

enum pffft_transform_t

Enumerator
PFFFT_REAL
PFFFT_COMPLEX

Definition at line 109 of file pffft.h.

{ PFFFT_REAL, PFFFT_COMPLEX } pffft_transform_t;

Function Documentation

pffft_aligned_free()

void pffft_aligned_free

(

void *

)

Referenced by staffpad::audio::FourierTransform::~FourierTransform().

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pffft_aligned_malloc()

void * pffft_aligned_malloc

(

size_t

nb_bytes

)

Referenced by staffpad::audio::FourierTransform::FourierTransform().

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pffft_destroy_setup()

void pffft_destroy_setup

(

PFFFT_Setup *

)

Referenced by staffpad::audio::FourierTransform::~FourierTransform().

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pffft_is_power_of_two()

int pffft_is_power_of_two

(

int

N

)

pffft_min_fft_size()

int pffft_min_fft_size

(

pffft_transform_t

transform

)

pffft_new_setup()

PFFFT_Setup * pffft_new_setup	(	int	N,
		pffft_transform_t	transform
	)

Referenced by staffpad::audio::FourierTransform::FourierTransform().

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pffft_next_power_of_two()

int pffft_next_power_of_two

(

int

N

)

pffft_simd_size()

int pffft_simd_size

(

void

)

pffft_transform()

void pffft_transform	(	PFFFT_Setup *	setup,
		const PFFFT_FLOAT *	input,
		PFFFT_FLOAT *	output,
		PFFFT_FLOAT *	work,
		pffft_direction_t	direction
	)

pffft_transform_ordered()

void pffft_transform_ordered	(	PFFFT_Setup *	setup,
		const PFFFT_FLOAT *	input,
		PFFFT_FLOAT *	output,
		PFFFT_FLOAT *	work,
		pffft_direction_t	direction
	)

Referenced by staffpad::audio::FourierTransform::forwardReal(), and staffpad::audio::FourierTransform::inverseReal().

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pffft_zconvolve_accumulate()

void pffft_zconvolve_accumulate	(	PFFFT_Setup *	setup,
		const PFFFT_FLOAT *	dft_a,
		const PFFFT_FLOAT *	dft_b,
		PFFFT_FLOAT *	dft_ab,
		PFFFT_FLOAT	scaling
	)

pffft_zconvolve_no_accu()

void pffft_zconvolve_no_accu	(	PFFFT_Setup *	setup,
		const float *	dft_a,
		const float *	dft_b,
		float *	dft_ab,
		float	scaling
	)

pffft_zreorder()

void pffft_zreorder	(	PFFFT_Setup *	setup,
		const PFFFT_FLOAT *	input,
		PFFFT_FLOAT *	output,
		pffft_direction_t	direction
	)