FFmpeg: libavcodec/jpeg2000dwt.h File Reference

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Data Structures | Macros | Enumerations | Functions

jpeg2000dwt.h File Reference

Discrete wavelet transform. More...

#include <stdint.h>

Go to the source code of this file.

Data Structures

struct DWTContext

Macros

#define FF_DWT_MAX_DECLVLS 32

max number of decomposition levels

Enumerations

enum DWTType { FF_DWT97, FF_DWT53, FF_DWT97_INT, FF_DWT_NB }

Functions

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

Enumerator:: FF_DWT97

FF_DWT53

FF_DWT97_INT

FF_DWT_NB

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.

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 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().

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