FFmpeg
Macros | Functions
jpeg2000dwt.c File Reference

Discrete wavelet transform. More...

#include "libavutil/avassert.h"
#include "libavutil/common.h"
#include "libavutil/mem.h"
#include "jpeg2000dwt.h"
#include "internal.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

#define F_LFTG_ALPHA   1.586134342059924f

Definition at line 36 of file jpeg2000dwt.c.

Referenced by sr_1d97_float().

#define F_LFTG_BETA   0.052980118572961f

Definition at line 37 of file jpeg2000dwt.c.

Referenced by sr_1d97_float().

#define F_LFTG_GAMMA   0.882911075530934f

Definition at line 38 of file jpeg2000dwt.c.

Referenced by sr_1d97_float().

#define F_LFTG_DELTA   0.443506852043971f

Definition at line 39 of file jpeg2000dwt.c.

Referenced by sr_1d97_float().

#define I_LFTG_ALPHA   103949ll

Definition at line 43 of file jpeg2000dwt.c.

Referenced by sd_1d97_int(), and sr_1d97_int().

#define I_LFTG_BETA   3472ll

Definition at line 44 of file jpeg2000dwt.c.

Referenced by sd_1d97_int(), and sr_1d97_int().

#define I_LFTG_GAMMA   57862ll

Definition at line 45 of file jpeg2000dwt.c.

Referenced by sd_1d97_int(), and sr_1d97_int().

#define I_LFTG_DELTA   29066ll

Definition at line 46 of file jpeg2000dwt.c.

Referenced by sd_1d97_int(), and sr_1d97_int().

#define I_LFTG_K   80621ll

Definition at line 47 of file jpeg2000dwt.c.

Referenced by dwt_decode97_int(), sd_1d97_int(), and sr_1d97_int().

#define I_LFTG_X   53274ll

Definition at line 48 of file jpeg2000dwt.c.

Referenced by dwt_encode97_int(), sd_1d97_int(), and sr_1d97_int().

#define I_PRESHIFT   8

Definition at line 49 of file jpeg2000dwt.c.

Referenced by dwt_decode97_int(), and dwt_encode97_int().

Function Documentation

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

Definition at line 51 of file jpeg2000dwt.c.

Referenced by sd_1d53(), and sr_1d53().

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

Definition at line 59 of file jpeg2000dwt.c.

Referenced by sd_1d97_float(), and sr_1d97_float().

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

Definition at line 69 of file jpeg2000dwt.c.

Referenced by sd_1d97_int(), and sr_1d97_int().

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

Definition at line 79 of file jpeg2000dwt.c.

Referenced by dwt_encode53().

static void dwt_encode53 ( DWTContext s,
int t 
)
static

Definition at line 97 of file jpeg2000dwt.c.

Referenced by ff_dwt_encode().

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

Definition at line 147 of file jpeg2000dwt.c.

Referenced by dwt_encode97_float().

static void dwt_encode97_float ( DWTContext s,
float *  t 
)
static

Definition at line 172 of file jpeg2000dwt.c.

Referenced by ff_dwt_encode().

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

Definition at line 223 of file jpeg2000dwt.c.

Referenced by dwt_encode97_int().

static void dwt_encode97_int ( DWTContext s,
int t 
)
static

Definition at line 248 of file jpeg2000dwt.c.

Referenced by ff_dwt_encode().

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

Definition at line 308 of file jpeg2000dwt.c.

Referenced by dwt_decode53().

static void dwt_decode53 ( DWTContext s,
int t 
)
static

Definition at line 326 of file jpeg2000dwt.c.

Referenced by ff_dwt_decode().

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

Definition at line 375 of file jpeg2000dwt.c.

Referenced by dwt_decode97_float().

static void dwt_decode97_float ( DWTContext s,
float *  t 
)
static

Definition at line 402 of file jpeg2000dwt.c.

Referenced by ff_dwt_decode().

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

Definition at line 452 of file jpeg2000dwt.c.

Referenced by dwt_decode97_int().

static void dwt_decode97_int ( DWTContext s,
int32_t t 
)
static

Definition at line 479 of file jpeg2000dwt.c.

Referenced by ff_dwt_decode().

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 537 of file jpeg2000dwt.c.

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

int ff_dwt_encode ( DWTContext s,
void t 
)

Definition at line 581 of file jpeg2000dwt.c.

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

int ff_dwt_decode ( DWTContext s,
void t 
)

Definition at line 599 of file jpeg2000dwt.c.

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

void ff_dwt_destroy ( DWTContext s)

Definition at line 620 of file jpeg2000dwt.c.

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