FFmpeg: libavcodec/jpeg2000dwt.c File Reference

FFmpeg 4.0

libavcodec

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

◆ F_LFTG_ALPHA

#define F_LFTG_ALPHA 1.586134342059924f

Definition at line 36 of file jpeg2000dwt.c.

Referenced by sr_1d97_float().

◆ F_LFTG_BETA

#define F_LFTG_BETA 0.052980118572961f

Definition at line 37 of file jpeg2000dwt.c.

Referenced by sr_1d97_float().

◆ F_LFTG_GAMMA

#define F_LFTG_GAMMA 0.882911075530934f

Definition at line 38 of file jpeg2000dwt.c.

Referenced by sr_1d97_float().

◆ F_LFTG_DELTA

#define F_LFTG_DELTA 0.443506852043971f

Definition at line 39 of file jpeg2000dwt.c.

Referenced by sr_1d97_float().

◆ I_LFTG_ALPHA

#define I_LFTG_ALPHA 103949ll

Definition at line 43 of file jpeg2000dwt.c.

Referenced by sd_1d97_int(), and sr_1d97_int().

◆ I_LFTG_BETA

#define I_LFTG_BETA 3472ll

Definition at line 44 of file jpeg2000dwt.c.

Referenced by sd_1d97_int(), and sr_1d97_int().

◆ I_LFTG_GAMMA

#define I_LFTG_GAMMA 57862ll

Definition at line 45 of file jpeg2000dwt.c.

Referenced by sd_1d97_int(), and sr_1d97_int().

◆ I_LFTG_DELTA

#define I_LFTG_DELTA 29066ll

Definition at line 46 of file jpeg2000dwt.c.

Referenced by sd_1d97_int(), and sr_1d97_int().

◆ I_LFTG_K

#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().

◆ I_LFTG_X

#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().

◆ I_PRESHIFT

#define I_PRESHIFT 8

Definition at line 49 of file jpeg2000dwt.c.

Referenced by dwt_decode97_int(), and dwt_encode97_int().

Function Documentation

◆ extend53()

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().

◆ extend97_float()

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().

◆ extend97_int()

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().

◆ sd_1d53()

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

static

Definition at line 79 of file jpeg2000dwt.c.

Referenced by dwt_encode53().

◆ dwt_encode53()

static void dwt_encode53	(	DWTContext *	s,
		int *	t
	)

static

Definition at line 97 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 147 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 172 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 223 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 248 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 308 of file jpeg2000dwt.c.

Referenced by dwt_decode53().

◆ dwt_decode53()

static void dwt_decode53	(	DWTContext *	s,
		int *	t
	)

static

Definition at line 326 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 375 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 402 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 452 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 479 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

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 537 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 581 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 599 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 620 of file jpeg2000dwt.c.

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