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jpeg2000dwt.h File Reference

Discrete wavelet transform. More...

#include <stdint.h>

Go to the source code of this file.

Data Structures

struct  DWTContext


#define FF_DWT_MAX_DECLVLS   32
 max number of decomposition levels


enum  DWTType { FF_DWT97, FF_DWT53, FF_DWT97_INT }


int ff_jpeg2000_dwt_init (DWTContext *s, uint16_t border[2][2], int decomp_levels, int type)
 Initialize DWT.
int ff_dwt_encode (DWTContext *s, void *t)
int ff_dwt_decode (DWTContext *s, void *t)
void ff_dwt_destroy (DWTContext *s)

Detailed Description

Discrete wavelet transform.

Definition in file jpeg2000dwt.h.

Macro Definition Documentation

#define FF_DWT_MAX_DECLVLS   32

max number of decomposition levels

Definition at line 32 of file jpeg2000dwt.h.

Enumeration Type Documentation

enum DWTType

Definition at line 34 of file jpeg2000dwt.h.

Function Documentation

int ff_jpeg2000_dwt_init ( DWTContext s,
uint16_t  border[2][2],
int  decomp_levels,
int  type 

Initialize DWT.

sDWT context
bordercoordinates of transformed region {{x0, x1}, {y0, y1}}
decomp_levelsnumber of decomposition levels
type0 for DWT 9/7; 1 for DWT 5/3

Definition at line 497 of file jpeg2000dwt.c.

Referenced by ff_jpeg2000_init_component().

int ff_dwt_encode ( DWTContext s,
void t 

Definition at line 541 of file jpeg2000dwt.c.

Referenced by encode_tile().

int ff_dwt_decode ( DWTContext s,
void t 

Definition at line 556 of file jpeg2000dwt.c.

Referenced by jpeg2000_decode_tile().

void ff_dwt_destroy ( DWTContext s)

Definition at line 574 of file jpeg2000dwt.c.

Referenced by ff_jpeg2000_cleanup().