dct.h File Reference

#include "rdft.h"

Go to the source code of this file.

Data Structures
struct	DCTContext

Functions
int	ff_dct_init (DCTContext *s, int nbits, enum DCTTransformType type)
	Set up DCT.
void	ff_dct_end (DCTContext *s)
void	ff_dct_init_x86 (DCTContext *s)

Function Documentation

int ff_dct_init	(	DCTContext *	s,
		int	nbits,
		enum DCTTransformType	type
	)

Set up DCT.

Parameters

nbits

size of the input array: (1 << nbits) for DCT-II, DCT-III and DST-I (1 << nbits) + 1 for DCT-I

Note

the first element of the input of DST-I is ignored

Definition at line 177 of file dct.c.

Referenced by decode_init(), ff_mpadsp_init(), main(), and wmavoice_decode_init().

void ff_dct_end

(

DCTContext *

s

)

Definition at line 218 of file dct.c.

Referenced by decode_end(), main(), and wmavoice_decode_end().

void ff_dct_init_x86

(

DCTContext *

s

)

Referenced by ff_dct_init().