smallft.h File Reference

Discrete Rotational Fourier Transform (DRFT). More...

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Classes
struct	drft_lookup
Functions
void	spx_drft_forward (struct drft_lookup *l, float *data)
void	spx_drft_backward (struct drft_lookup *l, float *data)
void	spx_drft_init (struct drft_lookup *l, int n)
void	spx_drft_clear (struct drft_lookup *l)

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Detailed Description

Discrete Rotational Fourier Transform (DRFT).

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Function Documentation

void spx_drft_backward	(	struct drft_lookup *	l,
		float *	data
	)

References drft_lookup::n, drft_lookup::splitcache, and drft_lookup::trigcache.

void spx_drft_clear

(

struct drft_lookup *

l

)

References speex_free(), drft_lookup::splitcache, and drft_lookup::trigcache.

Referenced by speex_preprocess_state_destroy().

void spx_drft_forward	(	struct drft_lookup *	l,
		float *	data
	)

References drft_lookup::n, drft_lookup::splitcache, and drft_lookup::trigcache.

void spx_drft_init	(	struct drft_lookup *	l,
		int	n
	)

References drft_lookup::n, speex_alloc(), drft_lookup::splitcache, and drft_lookup::trigcache.

Referenced by speex_preprocess_state_init().