OpenJPEG  1.5.1
Data Structures | Macros | Typedefs | Functions | Variables
dwt.c File Reference
#include "opj_includes.h"

Data Structures

struct  dwt_local
 
union  v4
 
struct  v4dwt_local
 

Macros

#define WS(i)   v->mem[(i)*2]
 
#define WD(i)   v->mem[(1+(i)*2)]
 
#define S(i)   a[(i)*2]
 
#define D(i)   a[(1+(i)*2)]
 
#define S_(i)   ((i)<0?S(0):((i)>=sn?S(sn-1):S(i)))
 
#define D_(i)   ((i)<0?D(0):((i)>=dn?D(dn-1):D(i)))
 
#define SS_(i)   ((i)<0?S(0):((i)>=dn?S(dn-1):S(i)))
 
#define DD_(i)   ((i)<0?D(0):((i)>=sn?D(sn-1):D(i)))
 

Typedefs

typedef void(* DWT1DFN )(dwt_t *v)
 Virtual function type for wavelet transform in 1-D. More...
 

Functions

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. More...
 
opj_bool dwt_decode (opj_tcd_tilecomp_t *tilec, int numres)
 Inverse 5-3 wavelet tranform in 2-D. More...
 
int dwt_getgain (int orient)
 Get the gain of a subband for the reversible 5-3 DWT. More...
 
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. More...
 
void dwt_encode_real (opj_tcd_tilecomp_t *tilec)
 Forward 9-7 wavelet transform in 2-D. More...
 
int dwt_getgain_real (int orient)
 Get the gain of a subband for the irreversible 9-7 DWT. More...
 
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. More...
 
void dwt_calc_explicit_stepsizes (opj_tccp_t *tccp, int prec)
 Explicit calculation of the Quantization Stepsizes. More...
 
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)
 
opj_bool dwt_decode_real (opj_tcd_tilecomp_t *restrict tilec, int numres)
 
Local static functions
static void dwt_deinterleave_h (int *a, int *b, int dn, int sn, int cas)
 Forward lazy transform (horizontal) More...
 
static void dwt_deinterleave_v (int *a, int *b, int dn, int sn, int x, int cas)
 Forward lazy transform (vertical) More...
 
static void dwt_interleave_h (dwt_t *h, int *a)
 Inverse lazy transform (horizontal) More...
 
static void dwt_interleave_v (dwt_t *v, int *a, int x)
 Inverse lazy transform (vertical) More...
 
static void dwt_encode_1 (int *a, int dn, int sn, int cas)
 Forward 5-3 wavelet transform in 1-D. More...
 
static void dwt_decode_1 (dwt_t *v)
 Inverse 5-3 wavelet transform in 1-D. More...
 
static void dwt_encode_1_real (int *a, int dn, int sn, int cas)
 Forward 9-7 wavelet transform in 1-D. More...
 
static void dwt_encode_stepsize (int stepsize, int numbps, opj_stepsize_t *bandno_stepsize)
 Explicit calculation of the Quantization Stepsizes. More...
 
static opj_bool dwt_decode_tile (opj_tcd_tilecomp_t *tilec, int i, DWT1DFN fn)
 Inverse wavelet transform in 2-D. More...
 

Variables

static const double dwt_norms [4][10]
 
static const double dwt_norms_real [4][10]
 

Local data structures

typedef struct dwt_local dwt_t
 
typedef struct v4dwt_local v4dwt_t
 
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

#define D (   i)    a[(1+(i)*2)]
#define D_ (   i)    ((i)<0?D(0):((i)>=dn?D(dn-1):D(i)))
#define DD_ (   i)    ((i)<0?D(0):((i)>=sn?D(sn-1):D(i)))
#define S (   i)    a[(i)*2]
#define S_ (   i)    ((i)<0?S(0):((i)>=sn?S(sn-1):S(i)))

Referenced by dwt_encode_1(), and dwt_encode_1_real().

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

Referenced by dwt_decode_1_(), and dwt_encode_1_real().

Function Documentation

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

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

Referenced by dwt_decode_1().

static int dwt_decode_max_resolution ( opj_tcd_resolution_t *restrict  r,
int  i 
)
static

Referenced by dwt_decode_real(), and dwt_decode_tile().

opj_bool dwt_decode_real ( opj_tcd_tilecomp_t *restrict  tilec,
int  numres 
)
static void v4dwt_decode ( v4dwt_t *restrict  dwt)
static
static void v4dwt_decode_step1 ( v4 w,
int  count,
const float  c 
)
static

References restrict.

Referenced by v4dwt_decode().

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

References restrict.

Referenced by v4dwt_decode().

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

References restrict.

Referenced by dwt_decode_real().

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

References restrict.

Referenced by dwt_decode_real().

Variable Documentation

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().

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().