#include "opj_includes.h"

Data Structures
struct	dwt_local
union	v4
struct	v4dwt_local

Macros
#define	WS(i)
#define	WD(i)

Local static functions
#define	S(i)
#define	D(i)
#define	S_(i)
#define	D_(i)
#define	SS_(i)
#define	DD_(i)
static const double	dwt_norms [4][10]
static const double	dwt_norms_real [4][10]
static void	dwt_deinterleave_h (int a, int b, int dn, int sn, int cas)
	Forward lazy transform (horizontal).
static void	dwt_deinterleave_v (int a, int b, int dn, int sn, int x, int cas)
	Forward lazy transform (vertical).
static void	dwt_interleave_h (dwt_t h, int a)
	Inverse lazy transform (horizontal).
static void	dwt_interleave_v (dwt_t v, int a, int x)
	Inverse lazy transform (vertical).
static void	dwt_encode_1 (int *a, int dn, int sn, int cas)
	Forward 5-3 wavelet transform in 1-D.
static void	dwt_decode_1 (dwt_t *v)
	Inverse 5-3 wavelet transform in 1-D.
static void	dwt_encode_1_real (int *a, int dn, int sn, int cas)
	Forward 9-7 wavelet transform in 1-D.
static void	dwt_encode_stepsize (int stepsize, int numbps, opj_stepsize_t *bandno_stepsize)
	Explicit calculation of the Quantization Stepsizes.
static void	dwt_decode_tile (opj_tcd_tilecomp_t *tilec, int i, DWT1DFN fn)
	Inverse wavelet transform in 2-D.
static void	dwt_decode_1_ (int *a, int dn, int sn, int cas)
void	dwt_encode (opj_tcd_tilecomp_t *tilec)
	Forward 5-3 wavelet tranform in 2-D.
void	dwt_decode (opj_tcd_tilecomp_t *tilec, int numres)
	Inverse 5-3 wavelet tranform in 2-D.
int	dwt_getgain (int orient)
	Get the gain of a subband for the reversible 5-3 DWT.
double	dwt_getnorm (int level, int orient)
	Get the norm of a wavelet function of a subband at a specified level for the reversible 5-3 DWT.
void	dwt_encode_real (opj_tcd_tilecomp_t *tilec)
	Forward 9-7 wavelet transform in 2-D.
int	dwt_getgain_real (int orient)
	Get the gain of a subband for the irreversible 9-7 DWT.
double	dwt_getnorm_real (int level, int orient)
	Get the norm of a wavelet function of a subband at a specified level for the irreversible 9-7 DWT.
void	dwt_calc_explicit_stepsizes (opj_tccp_t *tccp, int prec)
	Explicit calculation of the Quantization Stepsizes.
static int	dwt_decode_max_resolution (opj_tcd_resolution_t *restrict r, int i)
static void	v4dwt_interleave_h (v4dwt_t restrict w, float restrict a, int x, int size)
static void	v4dwt_interleave_v (v4dwt_t restrict v, float restrict a, int x)
static void	v4dwt_decode_step1 (v4 *w, int count, const float c)
static void	v4dwt_decode_step2 (v4 l, v4 w, int k, int m, float c)
static void	v4dwt_decode (v4dwt_t *restrict dwt)
void	dwt_decode_real (opj_tcd_tilecomp_t *restrict tilec, int numres)

Local data structures
typedef struct dwt_local	dwt_t
typedef struct v4dwt_local	v4dwt_t
typedef void(*	DWT1DFN) (dwt_t *v)
	Virtual function type for wavelet transform in 1-D.
static const float	dwt_alpha = 1.586134342f
static const float	dwt_beta = 0.052980118f
static const float	dwt_gamma = -0.882911075f
static const float	dwt_delta = -0.443506852f
static const float	K = 1.230174105f
static const float	c13318 = 1.625732422f

Macro Definition Documentation

◆ D

#define D ( i )

Value:

a[(1+(i)*2)]

Referenced by dwt_decode_1_(), dwt_encode_1(), and dwt_encode_1_real().

◆ D_

#define D_ ( i )

Value:

((i)<0?D(0):((i)>=dn?D(dn-1):D(i)))

D

#define D(i)

Definition dwt.c:128

Referenced by dwt_decode_1_(), dwt_encode_1(), and dwt_encode_1_real().

◆ DD_

#define DD_ ( i )

Value:

((i)<0?D(0):((i)>=sn?D(sn-1):D(i)))

Referenced by dwt_decode_1_(), dwt_encode_1(), and dwt_encode_1_real().

◆ S

#define S ( i )

Value:

a[(i)*2]

Referenced by dwt_decode_1_(), dwt_encode_1(), and dwt_encode_1_real().

◆ S_

#define S_ ( i )

Value:

((i)<0?S(0):((i)>=sn?S(sn-1):S(i)))

S

#define S(i)

Definition dwt.c:127

Referenced by dwt_decode_1_(), dwt_encode_1(), and dwt_encode_1_real().

◆ SS_

#define SS_ ( i )

Value:

((i)<0?S(0):((i)>=dn?S(dn-1):S(i)))

Referenced by dwt_decode_1_(), dwt_encode_1(), and dwt_encode_1_real().

◆ WD

#define WD ( i )

Value:

v->mem[(1+(i)*2)]

◆ WS

#define WS ( i )

Value:

v->mem[(i)*2]

Typedef Documentation

◆ DWT1DFN

typedef void(* DWT1DFN) (dwt_t *v)

Virtual function type for wavelet transform in 1-D.

◆ dwt_t

typedef struct dwt_local dwt_t

◆ v4dwt_t

typedef struct v4dwt_local v4dwt_t

Function Documentation

◆ dwt_calc_explicit_stepsizes()

void dwt_calc_explicit_stepsizes	(	opj_tccp_t *	tccp,
		int	prec )

Explicit calculation of the Quantization Stepsizes.

Parameters

tccp	Tile-component coding parameters
prec	Precint analyzed

References dwt_encode_stepsize(), dwt_norms_real, J2K_CCP_QNTSTY_NOQNT, opj_tccp::numresolutions, opj_tccp::qmfbid, opj_tccp::qntsty, and opj_tccp::stepsizes.

Referenced by j2k_setup_encoder().

◆ dwt_decode()

void dwt_decode	(	opj_tcd_tilecomp_t *	tilec,
		int	numres )

Inverse 5-3 wavelet tranform in 2-D.

Apply a reversible inverse DWT transform to a component of an image.

Parameters

tilec	Tile component information (current tile)
numres	Number of resolution levels to decode

References dwt_decode_1(), and dwt_decode_tile().

Referenced by tcd_decode_tile().

◆ dwt_decode_1()

void dwt_decode_1 ( dwt_t * v )

static

Inverse 5-3 wavelet transform in 1-D.

References dwt_local::cas, dwt_local::dn, dwt_decode_1_(), dwt_local::mem, and dwt_local::sn.

Referenced by dwt_decode().

◆ dwt_decode_1_()

void dwt_decode_1_	(	int *	a,
		int	dn,
		int	sn,
		int	cas )

static

References D, D_, DD_, S, S_, and SS_.

Referenced by dwt_decode_1().

◆ dwt_decode_max_resolution()

int dwt_decode_max_resolution	(	opj_tcd_resolution_t *restrict	r,
		int	i )

static

References restrict.

Referenced by dwt_decode_real(), and dwt_decode_tile().

◆ dwt_decode_real()

void dwt_decode_real	(	opj_tcd_tilecomp_t *restrict	tilec,
		int	numres )

References v4dwt_local::cas, v4dwt_local::dn, dwt_decode_max_resolution(), v4::f, opj_aligned_free, opj_aligned_malloc, restrict, v4dwt_local::sn, v4dwt_decode(), v4dwt_interleave_h(), v4dwt_interleave_v(), v4dwt_local::wavelet, opj_tcd_resolution::x0, opj_tcd_resolution::x1, opj_tcd_resolution::y0, and opj_tcd_resolution::y1.

Referenced by tcd_decode_tile().

◆ dwt_decode_tile()

void dwt_decode_tile	(	opj_tcd_tilecomp_t *	tilec,
		int	i,
		DWT1DFN	fn )

static

Inverse wavelet transform in 2-D.

References dwt_local::cas, opj_tcd_tilecomp::data, dwt_local::dn, dwt_decode_max_resolution(), dwt_interleave_h(), dwt_interleave_v(), dwt_local::mem, opj_aligned_free, opj_aligned_malloc, opj_tcd_tilecomp::resolutions, restrict, dwt_local::sn, opj_tcd_resolution::x0, opj_tcd_tilecomp::x0, opj_tcd_resolution::x1, opj_tcd_tilecomp::x1, opj_tcd_resolution::y0, and opj_tcd_resolution::y1.

Referenced by dwt_decode().

◆ dwt_deinterleave_h()

void dwt_deinterleave_h	(	int *	a,
		int *	b,
		int	dn,
		int	sn,
		int	cas )

static

Forward lazy transform (horizontal).

Referenced by dwt_encode(), and dwt_encode_real().

◆ dwt_deinterleave_v()

void dwt_deinterleave_v	(	int *	a,
		int *	b,
		int	dn,
		int	sn,
		int	x,
		int	cas )

static

Forward lazy transform (vertical).

Referenced by dwt_encode(), and dwt_encode_real().

◆ dwt_encode()

void dwt_encode ( opj_tcd_tilecomp_t * tilec )

Forward 5-3 wavelet tranform in 2-D.

Apply a reversible DWT transform to a component of an image.

Parameters

tilec Tile component information (current tile)

References opj_tcd_tilecomp::data, dwt_deinterleave_h(), dwt_deinterleave_v(), dwt_encode_1(), opj_tcd_tilecomp::numresolutions, opj_free, opj_malloc, opj_tcd_tilecomp::resolutions, opj_tcd_resolution::x0, opj_tcd_tilecomp::x0, opj_tcd_resolution::x1, opj_tcd_tilecomp::x1, opj_tcd_resolution::y0, and opj_tcd_resolution::y1.

Referenced by tcd_encode_tile().

◆ dwt_encode_1()

void dwt_encode_1	(	int *	a,
		int	dn,
		int	sn,
		int	cas )

static

Forward 5-3 wavelet transform in 1-D.

References D, D_, DD_, S, S_, and SS_.

Referenced by dwt_encode().

◆ dwt_encode_1_real()

void dwt_encode_1_real	(	int *	a,
		int	dn,
		int	sn,
		int	cas )

static

Forward 9-7 wavelet transform in 1-D.

References D, D_, DD_, fix_mul(), S, S_, and SS_.

Referenced by dwt_encode_real().

◆ dwt_encode_real()

void dwt_encode_real ( opj_tcd_tilecomp_t * tilec )

Forward 9-7 wavelet transform in 2-D.

Apply an irreversible DWT transform to a component of an image.

Parameters

tilec Tile component information (current tile)

References opj_tcd_tilecomp::data, dwt_deinterleave_h(), dwt_deinterleave_v(), dwt_encode_1_real(), opj_tcd_tilecomp::numresolutions, opj_free, opj_malloc, opj_tcd_tilecomp::resolutions, opj_tcd_resolution::x0, opj_tcd_tilecomp::x0, opj_tcd_resolution::x1, opj_tcd_tilecomp::x1, opj_tcd_resolution::y0, and opj_tcd_resolution::y1.

Referenced by tcd_encode_tile().

◆ dwt_encode_stepsize()

void dwt_encode_stepsize	(	int	stepsize,
		int	numbps,
		opj_stepsize_t *	bandno_stepsize )

static

Explicit calculation of the Quantization Stepsizes.

References opj_stepsize::expn, int_floorlog2(), and opj_stepsize::mant.

Referenced by dwt_calc_explicit_stepsizes().

◆ dwt_getgain()

int dwt_getgain ( int orient )

Get the gain of a subband for the reversible 5-3 DWT.

Parameters

orient Number that identifies the subband (0->LL, 1->HL, 2->LH, 3->HH)

Returns: Returns 0 if orient = 0, returns 1 if orient = 1 or 2, returns 2 otherwise

Referenced by tcd_init_encode(), tcd_malloc_decode_tile(), and tcd_malloc_encode().

◆ dwt_getgain_real()

int dwt_getgain_real ( int orient )

Get the gain of a subband for the irreversible 9-7 DWT.

Parameters

orient Number that identifies the subband (0->LL, 1->HL, 2->LH, 3->HH)

Returns: Returns the gain of the 9-7 wavelet transform

Referenced by tcd_init_encode(), tcd_malloc_decode_tile(), and tcd_malloc_encode().

◆ dwt_getnorm()

double dwt_getnorm	(	int	level,
		int	orient )

Get the norm of a wavelet function of a subband at a specified level for the reversible 5-3 DWT.

Parameters

level	Level of the wavelet function
orient	Band of the wavelet function

Returns: Returns the norm of the wavelet function

References dwt_norms.

Referenced by t1_getwmsedec().

◆ dwt_getnorm_real()

double dwt_getnorm_real	(	int	level,
		int	orient )

Get the norm of a wavelet function of a subband at a specified level for the irreversible 9-7 DWT.

Parameters

level	Level of the wavelet function
orient	Band of the wavelet function

Returns: Returns the norm of the 9-7 wavelet

References dwt_norms_real.

Referenced by t1_getwmsedec().

◆ dwt_interleave_h()

void dwt_interleave_h	(	dwt_t *	h,
		int *	a )

static

Inverse lazy transform (horizontal).

References dwt_local::cas, dwt_local::dn, dwt_local::mem, and dwt_local::sn.

Referenced by dwt_decode_tile().

◆ dwt_interleave_v()

void dwt_interleave_v	(	dwt_t *	v,
		int *	a,
		int	x )

static

Inverse lazy transform (vertical).

References dwt_local::cas, dwt_local::dn, dwt_local::mem, and dwt_local::sn.

Referenced by dwt_decode_tile().

◆ v4dwt_decode()

void v4dwt_decode ( v4dwt_t *restrict dwt )

static

References c13318, dwt_alpha, dwt_beta, dwt_delta, dwt_gamma, int_min(), K, restrict, v4dwt_decode_step1(), and v4dwt_decode_step2().

Referenced by dwt_decode_real().

◆ v4dwt_decode_step1()

void v4dwt_decode_step1	(	v4 *	w,
		int	count,
		const float	c )

static

References restrict.

Referenced by v4dwt_decode().

◆ v4dwt_decode_step2()

void v4dwt_decode_step2	(	v4 *	l,
		v4 *	w,
		int	k,
		int	m,
		float	c )

static

References restrict.

Referenced by v4dwt_decode().

◆ v4dwt_interleave_h()

void v4dwt_interleave_h	(	v4dwt_t *restrict	w,
		float *restrict	a,
		int	x,
		int	size )

static

References restrict.

Referenced by dwt_decode_real().

◆ v4dwt_interleave_v()

void v4dwt_interleave_v	(	v4dwt_t *restrict	v,
		float *restrict	a,
		int	x )

static

References restrict.

Referenced by dwt_decode_real().

Variable Documentation

◆ c13318

const float c13318 = 1.625732422f

static

Referenced by v4dwt_decode().

◆ dwt_alpha

const float dwt_alpha = 1.586134342f

static

Referenced by v4dwt_decode().

◆ dwt_beta

const float dwt_beta = 0.052980118f

static

Referenced by v4dwt_decode().

◆ dwt_delta

const float dwt_delta = -0.443506852f

static

Referenced by v4dwt_decode().

◆ dwt_gamma

const float dwt_gamma = -0.882911075f

static

Referenced by v4dwt_decode().

◆ dwt_norms

const double dwt_norms[4][10]

static

Initial value:

                              = {
        {1.000, 1.500, 2.750, 5.375, 10.68, 21.34, 42.67, 85.33, 170.7, 341.3},
        {1.038, 1.592, 2.919, 5.703, 11.33, 22.64, 45.25, 90.48, 180.9},
        {1.038, 1.592, 2.919, 5.703, 11.33, 22.64, 45.25, 90.48, 180.9},
        {.7186, .9218, 1.586, 3.043, 6.019, 12.01, 24.00, 47.97, 95.93}
}

Referenced by dwt_getnorm().

◆ dwt_norms_real

const double dwt_norms_real[4][10]

static

Initial value:

                                   = {
        {1.000, 1.965, 4.177, 8.403, 16.90, 33.84, 67.69, 135.3, 270.6, 540.9},
        {2.022, 3.989, 8.355, 17.04, 34.27, 68.63, 137.3, 274.6, 549.0},
        {2.022, 3.989, 8.355, 17.04, 34.27, 68.63, 137.3, 274.6, 549.0},
        {2.080, 3.865, 8.307, 17.18, 34.71, 69.59, 139.3, 278.6, 557.2}
}

Referenced by dwt_calc_explicit_stepsizes(), and dwt_getnorm_real().

◆ K

const float K = 1.230174105f

static

Referenced by tcd_rateallocate(), and v4dwt_decode().

Data Structures

Macros

Local static functions

Local data structures

Macro Definition Documentation

◆ D

◆ D_

◆ DD_

◆ S

◆ S_

◆ SS_

◆ WD

◆ WS

Typedef Documentation

◆ DWT1DFN

◆ dwt_t

◆ v4dwt_t

Function Documentation

◆ dwt_calc_explicit_stepsizes()

◆ dwt_decode()

◆ dwt_decode_1()

◆ dwt_decode_1_()

◆ dwt_decode_max_resolution()

◆ dwt_decode_real()

◆ dwt_decode_tile()

◆ dwt_deinterleave_h()

◆ dwt_deinterleave_v()

◆ dwt_encode()

◆ dwt_encode_1()

◆ dwt_encode_1_real()

◆ dwt_encode_real()

◆ dwt_encode_stepsize()

◆ dwt_getgain()

◆ dwt_getgain_real()

◆ dwt_getnorm()

◆ dwt_getnorm_real()

◆ dwt_interleave_h()

◆ dwt_interleave_v()

◆ v4dwt_decode()

◆ v4dwt_decode_step1()

◆ v4dwt_decode_step2()

◆ v4dwt_interleave_h()

◆ v4dwt_interleave_v()

Variable Documentation

◆ c13318

◆ dwt_alpha

◆ dwt_beta

◆ dwt_delta

◆ dwt_gamma

◆ dwt_norms

◆ dwt_norms_real

◆ K