dct.h File Reference

#include <stddef.h>
#include <stdint.h>
#include "rdft.h"

Go to the source code of this file.

Data Structures
struct	DCTContext

Macros
#define	AVCODEC_DCT_H

Functions
int	ff_dct_init (DCTContext *s, int nbits, enum DCTTransformType type)
	Set up DCT. More...
void	ff_dct_end (DCTContext *s)
void	ff_dct_init_x86 (DCTContext *s)
void	ff_fdct_ifast (int16_t *data)
void	ff_fdct_ifast248 (int16_t *data)
void	ff_jpeg_fdct_islow_8 (int16_t *data)
void	ff_jpeg_fdct_islow_10 (int16_t *data)
void	ff_fdct248_islow_8 (int16_t *data)
void	ff_fdct248_islow_10 (int16_t *data)
void	ff_j_rev_dct (int16_t *data)
void	ff_j_rev_dct4 (int16_t *data)
void	ff_j_rev_dct2 (int16_t *data)
void	ff_j_rev_dct1 (int16_t *data)
void	ff_jref_idct_put (uint8_t *dest, ptrdiff_t line_size, int16_t *block)
void	ff_jref_idct_add (uint8_t *dest, ptrdiff_t line_size, int16_t *block)

Macro Definition Documentation

#define AVCODEC_DCT_H

Definition at line 25 of file dct.h.

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(), and wmavoice_decode_init().

void ff_dct_end

(

DCTContext *

s

)

Definition at line 220 of file dct.c.

Referenced by decode_end(), and wmavoice_decode_end().

void ff_dct_init_x86

(

DCTContext *

s

)

Definition at line 29 of file dct_init.c.

Referenced by ff_dct_init().

void ff_fdct_ifast

(

int16_t *

data

)

Definition at line 208 of file jfdctfst.c.

Referenced by dct_quantize_trellis_c(), encode_init(), ff_convert_matrix(), and ff_fdctdsp_init().

void ff_fdct_ifast248

(

int16_t *

data

)

Definition at line 274 of file jfdctfst.c.

Referenced by ff_fdctdsp_init().

void ff_jpeg_fdct_islow_8

(

int16_t *

data

)

Referenced by ff_convert_matrix(), and ff_fdctdsp_init().

void ff_jpeg_fdct_islow_10

(

int16_t *

data

)

Referenced by ff_convert_matrix(), and ff_fdctdsp_init().

void ff_fdct248_islow_8

(

int16_t *

data

)

Referenced by ff_fdctdsp_init().

void ff_fdct248_islow_10

(

int16_t *

data

)

Referenced by ff_fdctdsp_init().

void ff_j_rev_dct

(

int16_t *

data

)

Referenced by ff_idctdsp_init().

void ff_j_rev_dct4

(

int16_t *

data

)

Referenced by ff_idctdsp_init(), ff_jref_idct4_add(), and ff_jref_idct4_put().

void ff_j_rev_dct2

(

int16_t *

data

)

Referenced by ff_idctdsp_init(), ff_jref_idct2_add(), and ff_jref_idct2_put().

void ff_j_rev_dct1

(

int16_t *

data

)

Referenced by ff_idctdsp_init().

void ff_jref_idct_put	(	uint8_t *	dest,
		ptrdiff_t	line_size,
		int16_t *	block
	)

Definition at line 1159 of file jrevdct.c.

Referenced by ff_idctdsp_init().

void ff_jref_idct_add	(	uint8_t *	dest,
		ptrdiff_t	line_size,
		int16_t *	block
	)

Definition at line 1165 of file jrevdct.c.

Referenced by ff_idctdsp_init().