FFmpeg
Macros | Functions
jpeg2000dwt.c File Reference
#include "libavutil/error.h"
#include "libavutil/macros.h"
#include "libavutil/mem.h"
#include "jpeg2000dwt.h"

Go to the source code of this file.

Macros

#define F_LFTG_ALPHA   1.586134342059924f
 
#define F_LFTG_BETA   0.052980118572961f
 
#define F_LFTG_GAMMA   0.882911075530934f
 
#define F_LFTG_DELTA   0.443506852043971f
 
#define I_LFTG_ALPHA   103949ll
 
#define I_LFTG_BETA   3472ll
 
#define I_LFTG_GAMMA   57862ll
 
#define I_LFTG_DELTA   29066ll
 
#define I_LFTG_K   80621ll
 
#define I_LFTG_X   53274ll
 
#define I_PRESHIFT   8
 

Functions

static void extend53 (int *p, int i0, int i1)
 
static void extend97_float (float *p, int i0, int i1)
 
static void extend97_int (int32_t *p, int i0, int i1)
 
static void sd_1d53 (int *p, int i0, int i1)
 
static void dwt_encode53 (DWTContext *s, int *t)
 
static void sd_1d97_float (float *p, int i0, int i1)
 
static void dwt_encode97_float (DWTContext *s, float *t)
 
static void sd_1d97_int (int *p, int i0, int i1)
 
static void dwt_encode97_int (DWTContext *s, int *t)
 
static void sr_1d53 (unsigned *p, int i0, int i1)
 
static void dwt_decode53 (DWTContext *s, int *t)
 
static void sr_1d97_float (float *p, int i0, int i1)
 
static void dwt_decode97_float (DWTContext *s, float *t)
 
static void sr_1d97_int (int32_t *p, int i0, int i1)
 
static void dwt_decode97_int (DWTContext *s, int32_t *t)
 
int ff_jpeg2000_dwt_init (DWTContext *s, int border[2][2], int decomp_levels, int type)
 Initialize DWT. More...
 
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.c.

Macro Definition Documentation

◆ F_LFTG_ALPHA

#define F_LFTG_ALPHA   1.586134342059924f

Definition at line 35 of file jpeg2000dwt.c.

◆ F_LFTG_BETA

#define F_LFTG_BETA   0.052980118572961f

Definition at line 36 of file jpeg2000dwt.c.

◆ F_LFTG_GAMMA

#define F_LFTG_GAMMA   0.882911075530934f

Definition at line 37 of file jpeg2000dwt.c.

◆ F_LFTG_DELTA

#define F_LFTG_DELTA   0.443506852043971f

Definition at line 38 of file jpeg2000dwt.c.

◆ I_LFTG_ALPHA

#define I_LFTG_ALPHA   103949ll

Definition at line 42 of file jpeg2000dwt.c.

◆ I_LFTG_BETA

#define I_LFTG_BETA   3472ll

Definition at line 43 of file jpeg2000dwt.c.

◆ I_LFTG_GAMMA

#define I_LFTG_GAMMA   57862ll

Definition at line 44 of file jpeg2000dwt.c.

◆ I_LFTG_DELTA

#define I_LFTG_DELTA   29066ll

Definition at line 45 of file jpeg2000dwt.c.

◆ I_LFTG_K

#define I_LFTG_K   80621ll

Definition at line 46 of file jpeg2000dwt.c.

◆ I_LFTG_X

#define I_LFTG_X   53274ll

Definition at line 47 of file jpeg2000dwt.c.

◆ I_PRESHIFT

#define I_PRESHIFT   8

Definition at line 48 of file jpeg2000dwt.c.

Function Documentation

◆ extend53()

static void extend53 ( int p,
int  i0,
int  i1 
)
inlinestatic

Definition at line 50 of file jpeg2000dwt.c.

Referenced by sd_1d53(), and sr_1d53().

◆ extend97_float()

static void extend97_float ( float p,
int  i0,
int  i1 
)
inlinestatic

Definition at line 58 of file jpeg2000dwt.c.

Referenced by sd_1d97_float(), and sr_1d97_float().

◆ extend97_int()

static void extend97_int ( int32_t p,
int  i0,
int  i1 
)
inlinestatic

Definition at line 68 of file jpeg2000dwt.c.

Referenced by sd_1d97_int(), and sr_1d97_int().

◆ sd_1d53()

static void sd_1d53 ( int p,
int  i0,
int  i1 
)
static

Definition at line 78 of file jpeg2000dwt.c.

Referenced by dwt_encode53().

◆ dwt_encode53()

static void dwt_encode53 ( DWTContext s,
int t 
)
static

Definition at line 96 of file jpeg2000dwt.c.

Referenced by ff_dwt_encode().

◆ sd_1d97_float()

static void sd_1d97_float ( float p,
int  i0,
int  i1 
)
static

Definition at line 146 of file jpeg2000dwt.c.

Referenced by dwt_encode97_float().

◆ dwt_encode97_float()

static void dwt_encode97_float ( DWTContext s,
float t 
)
static

Definition at line 171 of file jpeg2000dwt.c.

Referenced by ff_dwt_encode().

◆ sd_1d97_int()

static void sd_1d97_int ( int p,
int  i0,
int  i1 
)
static

Definition at line 222 of file jpeg2000dwt.c.

Referenced by dwt_encode97_int().

◆ dwt_encode97_int()

static void dwt_encode97_int ( DWTContext s,
int t 
)
static

Definition at line 247 of file jpeg2000dwt.c.

Referenced by ff_dwt_encode().

◆ sr_1d53()

static void sr_1d53 ( unsigned *  p,
int  i0,
int  i1 
)
static

Definition at line 307 of file jpeg2000dwt.c.

Referenced by dwt_decode53().

◆ dwt_decode53()

static void dwt_decode53 ( DWTContext s,
int t 
)
static

Definition at line 325 of file jpeg2000dwt.c.

Referenced by ff_dwt_decode().

◆ sr_1d97_float()

static void sr_1d97_float ( float p,
int  i0,
int  i1 
)
static

Definition at line 374 of file jpeg2000dwt.c.

Referenced by dwt_decode97_float().

◆ dwt_decode97_float()

static void dwt_decode97_float ( DWTContext s,
float t 
)
static

Definition at line 401 of file jpeg2000dwt.c.

Referenced by ff_dwt_decode().

◆ sr_1d97_int()

static void sr_1d97_int ( int32_t p,
int  i0,
int  i1 
)
static

Definition at line 451 of file jpeg2000dwt.c.

Referenced by dwt_decode97_int().

◆ dwt_decode97_int()

static void dwt_decode97_int ( DWTContext s,
int32_t t 
)
static

Definition at line 478 of file jpeg2000dwt.c.

Referenced by ff_dwt_decode().

◆ ff_jpeg2000_dwt_init()

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

Initialize DWT.

Parameters
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 536 of file jpeg2000dwt.c.

Referenced by ff_jpeg2000_init_component(), test_dwt(), and test_dwtf().

◆ ff_dwt_encode()

int ff_dwt_encode ( DWTContext s,
void *  t 
)

Definition at line 580 of file jpeg2000dwt.c.

Referenced by encode_tile(), test_dwt(), and test_dwtf().

◆ ff_dwt_decode()

int ff_dwt_decode ( DWTContext s,
void *  t 
)

Definition at line 598 of file jpeg2000dwt.c.

Referenced by test_dwt(), test_dwtf(), and tile_codeblocks().

◆ ff_dwt_destroy()

void ff_dwt_destroy ( DWTContext s)

Definition at line 619 of file jpeg2000dwt.c.

Referenced by ff_jpeg2000_cleanup(), test_dwt(), and test_dwtf().