j2k_dwt.h File Reference

Discrete wavelet transform. More...

#include "avcodec.h"

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Data Structures
struct	DWTContext

Macros
#define	FF_DWT_MAX_DECLVLS   32
	max number of decomposition levels More...

Enumerations
enum	DWTType { FF_DWT97, FF_DWT53 }

Functions
int	ff_j2k_dwt_init (DWTContext *s, uint16_t border[2][2], int decomp_levels, int type)
	initialize DWT More...
int	ff_j2k_dwt_encode (DWTContext *s, int *t)
int	ff_j2k_dwt_decode (DWTContext *s, int *t)
void	ff_j2k_dwt_destroy (DWTContext *s)

Detailed Description

Discrete wavelet transform.

Author

Kamil Nowosad

Definition in file j2k_dwt.h.

Macro Definition Documentation

#define FF_DWT_MAX_DECLVLS   32

max number of decomposition levels

Definition at line 33 of file j2k_dwt.h.

Referenced by ff_j2k_dwt_init().

Enumeration Type Documentation

enum DWTType

Enumerator
FF_DWT97
FF_DWT53

Definition at line 35 of file j2k_dwt.h.

Function Documentation

int ff_j2k_dwt_decode	(	DWTContext *	s,
		int *	t
	)

Definition at line 370 of file j2k_dwt.c.

Referenced by decode_tile().

void ff_j2k_dwt_destroy

(

DWTContext *

s

)

Definition at line 383 of file j2k_dwt.c.

Referenced by ff_j2k_cleanup().

int ff_j2k_dwt_encode	(	DWTContext *	s,
		int *	t
	)

Definition at line 357 of file j2k_dwt.c.

Referenced by encode_tile().

int ff_j2k_dwt_init	(	DWTContext *	s,
		uint16_t	border[2][2],
		int	decomp_levels,
		int	type
	)

initialize DWT

Parameters

s	DWT context
border	coordinates of transformed region {{x0, x1}, {y0, y1}}
decomp_levels	number of decomposition levels
type	0 for DWT 9/7; 1 for DWT 5/3

Definition at line 319 of file j2k_dwt.c.

Referenced by ff_j2k_init_component().