mdct.h File Reference

#include "vorbis/codec.h"

Go to the source code of this file.

Classes
struct	mdct_lookup

Macros
#define	cPI1_8   .92387953251128675613F
#define	cPI2_8   .70710678118654752441F
#define	cPI3_8   .38268343236508977175F
#define	DATA_TYPE   float
#define	FLOAT_CONV(x)   (x)
#define	HALVE(x)   ((x)*.5f)
#define	MULT_NORM(x)   (x)
#define	REG_TYPE   float

Functions
void	mdct_backward (mdct_lookup *init, DATA_TYPE *in, DATA_TYPE *out)
void	mdct_clear (mdct_lookup *l)
void	mdct_forward (mdct_lookup *init, DATA_TYPE *in, DATA_TYPE *out)
void	mdct_init (mdct_lookup *lookup, int n)

Macro Definition Documentation

#define cPI1_8   .92387953251128675613F

Definition at line 47 of file mdct.h.

Referenced by mdct_butterfly_32().

#define cPI2_8   .70710678118654752441F

Definition at line 46 of file mdct.h.

Referenced by mdct_butterfly_16(), and mdct_butterfly_32().

#define cPI3_8   .38268343236508977175F

Definition at line 45 of file mdct.h.

Referenced by mdct_butterfly_32().

#define DATA_TYPE   float

Definition at line 43 of file mdct.h.

Referenced by mdct_backward(), mdct_bitreverse(), mdct_butterflies(), mdct_butterfly_first(), mdct_butterfly_generic(), mdct_forward(), and mdct_init().

#define FLOAT_CONV

(

x

)

(x)

Definition at line 49 of file mdct.h.

Referenced by mdct_init().

#define HALVE

(

x

)

((x)*.5f)

Definition at line 51 of file mdct.h.

Referenced by mdct_bitreverse().

#define MULT_NORM

(

x

)

(x)

Definition at line 50 of file mdct.h.

Referenced by mdct_backward(), mdct_bitreverse(), mdct_butterfly_16(), mdct_butterfly_32(), mdct_butterfly_first(), mdct_butterfly_generic(), and mdct_forward().

#define REG_TYPE   float

Definition at line 44 of file mdct.h.

Referenced by mdct_bitreverse(), mdct_butterfly_16(), mdct_butterfly_32(), mdct_butterfly_8(), mdct_butterfly_first(), mdct_butterfly_generic(), and mdct_forward().

Function Documentation

void mdct_backward	(	mdct_lookup *	init,
		DATA_TYPE *	in,
		DATA_TYPE *	out
	)

Definition at line 397 of file mdct.c.

References DATA_TYPE, mdct_bitreverse(), mdct_butterflies(), MULT_NORM, mdct_lookup::n, and mdct_lookup::trig.

Referenced by main(), and mapping0_inverse().

void mdct_clear

(

mdct_lookup *

l

)

Definition at line 339 of file mdct.c.

References _ogg_free, mdct_lookup::bitrev, memset, and mdct_lookup::trig.

Referenced by _ve_envelope_clear(), and vorbis_dsp_clear().

void mdct_forward	(	mdct_lookup *	init,
		DATA_TYPE *	in,
		DATA_TYPE *	out
	)

Definition at line 493 of file mdct.c.

References DATA_TYPE, i, mdct_bitreverse(), mdct_butterflies(), MULT_NORM, mdct_lookup::n, REG_TYPE, mdct_lookup::scale, and mdct_lookup::trig.

Referenced by _ve_amp(), main(), and mapping0_forward().

void mdct_init	(	mdct_lookup *	lookup,
		int	n
	)

Definition at line 52 of file mdct.c.

References _ogg_malloc, mdct_lookup::bitrev, cos(), DATA_TYPE, FLOAT_CONV, i, j, mdct_lookup::log2n, M_PI, mdct_lookup::n, mdct_lookup::scale, sin(), and mdct_lookup::trig.

Referenced by _vds_shared_init(), _ve_envelope_init(), and main().