mdct.c File Reference

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include "vorbis/codec.h"
#include "mdct.h"
#include "os.h"
#include "misc.h"

Go to the source code of this file.

Functions
void	mdct_backward (mdct_lookup *init, DATA_TYPE *in, DATA_TYPE *out)
STIN void	mdct_bitreverse (mdct_lookup *init, DATA_TYPE *x)
STIN void	mdct_butterflies (mdct_lookup *init, DATA_TYPE *x, int points)
STIN void	mdct_butterfly_16 (DATA_TYPE *x)
STIN void	mdct_butterfly_32 (DATA_TYPE *x)
STIN void	mdct_butterfly_8 (DATA_TYPE *x)
STIN void	mdct_butterfly_first (DATA_TYPE *T, DATA_TYPE *x, int points)
STIN void	mdct_butterfly_generic (DATA_TYPE *T, DATA_TYPE *x, int points, int trigint)
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)

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().

STIN void mdct_bitreverse	(	mdct_lookup *	init,
		DATA_TYPE *	x
	)

Definition at line 347 of file mdct.c.

References mdct_lookup::bitrev, DATA_TYPE, HALVE, MULT_NORM, mdct_lookup::n, REG_TYPE, and mdct_lookup::trig.

Referenced by mdct_backward(), and mdct_forward().

STIN void mdct_butterflies	(	mdct_lookup *	init,
		DATA_TYPE *	x,
		int	points
	)

Definition at line 317 of file mdct.c.

References DATA_TYPE, i, j, mdct_lookup::log2n, mdct_butterfly_32(), mdct_butterfly_first(), mdct_butterfly_generic(), and mdct_lookup::trig.

Referenced by mdct_backward(), and mdct_forward().

STIN void mdct_butterfly_16

(

DATA_TYPE *

x

)

Definition at line 118 of file mdct.c.

References cPI2_8, mdct_butterfly_8(), MULT_NORM, and REG_TYPE.

Referenced by mdct_butterfly_32().

STIN void mdct_butterfly_32

(

DATA_TYPE *

x

)

Definition at line 153 of file mdct.c.

References cPI1_8, cPI2_8, cPI3_8, mdct_butterfly_16(), MULT_NORM, and REG_TYPE.

Referenced by mdct_butterflies().

STIN void mdct_butterfly_8

(

DATA_TYPE *

x

)

Definition at line 94 of file mdct.c.

References REG_TYPE.

Referenced by mdct_butterfly_16().

STIN void mdct_butterfly_first	(	DATA_TYPE *	T,
		DATA_TYPE *	x,
		int	points
	)

Definition at line 217 of file mdct.c.

References DATA_TYPE, MULT_NORM, and REG_TYPE.

Referenced by mdct_butterflies().

STIN void mdct_butterfly_generic	(	DATA_TYPE *	T,
		DATA_TYPE *	x,
		int	points,
		int	trigint
	)

Definition at line 264 of file mdct.c.

References DATA_TYPE, MULT_NORM, and REG_TYPE.

Referenced by mdct_butterflies().

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().