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-/*
- * Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
- * Copyright (c) 2002-2007, Professor Benoit Macq
- * Copyright (c) 2001-2003, David Janssens
- * Copyright (c) 2002-2003, Yannick Verschueren
- * Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe
- * Copyright (c) 2005, Herve Drolon, FreeImage Team
- * Copyright (c) 2007, Jonathan Ballard <dzonatas@dzonux.net>
- * Copyright (c) 2007, Callum Lerwick <seg@haxxed.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifdef __SSE__
-#include <xmmintrin.h>
-#endif
-
-#include "opj_includes.h"
-
-/** @defgroup DWT DWT - Implementation of a discrete wavelet transform */
-/*@{*/
-
-#define WS(i) v->mem[(i)*2]
-#define WD(i) v->mem[(1+(i)*2)]
-
-/** @name Local data structures */
-/*@{*/
-
-typedef struct dwt_local {
- int* mem;
- int dn;
- int sn;
- int cas;
-} dwt_t;
-
-typedef union {
- float f[4];
-} v4;
-
-typedef struct v4dwt_local {
- v4* wavelet ;
- int dn ;
- int sn ;
- int cas ;
-} v4dwt_t ;
-
-static const float dwt_alpha = 1.586134342f; /* 12994 */
-static const float dwt_beta = 0.052980118f; /* 434 */
-static const float dwt_gamma = -0.882911075f; /* -7233 */
-static const float dwt_delta = -0.443506852f; /* -3633 */
-
-static const float K = 1.230174105f; /* 10078 */
-/* FIXME: What is this constant? */
-static const float c13318 = 1.625732422f;
-
-/*@}*/
-
-/**
-Virtual function type for wavelet transform in 1-D
-*/
-typedef void (*DWT1DFN)(dwt_t* v);
-
-/** @name Local static functions */
-/*@{*/
-
-/**
-Forward lazy transform (horizontal)
-*/
-static void dwt_deinterleave_h(int *a, int *b, int dn, int sn, int cas);
-/**
-Forward lazy transform (vertical)
-*/
-static void dwt_deinterleave_v(int *a, int *b, int dn, int sn, int x, int cas);
-/**
-Inverse lazy transform (horizontal)
-*/
-static void dwt_interleave_h(dwt_t* h, int *a);
-/**
-Inverse lazy transform (vertical)
-*/
-static void dwt_interleave_v(dwt_t* v, int *a, int x);
-/**
-Forward 5-3 wavelet transform in 1-D
-*/
-static void dwt_encode_1(int *a, int dn, int sn, int cas);
-/**
-Inverse 5-3 wavelet transform in 1-D
-*/
-static void dwt_decode_1(dwt_t *v);
-/**
-Forward 9-7 wavelet transform in 1-D
-*/
-static void dwt_encode_1_real(int *a, int dn, int sn, int cas);
-/**
-Explicit calculation of the Quantization Stepsizes
-*/
-static void dwt_encode_stepsize(int stepsize, int numbps, opj_stepsize_t *bandno_stepsize);
-/**
-Inverse wavelet transform in 2-D.
-*/
-static void dwt_decode_tile(opj_tcd_tilecomp_t* tilec, int i, DWT1DFN fn);
-
-/*@}*/
-
-/*@}*/
-
-#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)))
-/* new */
-#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)))
-
-/* <summary> */
-/* This table contains the norms of the 5-3 wavelets for different bands. */
-/* </summary> */
-static const double dwt_norms[4][10] = {
- {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}
-};
-
-/* <summary> */
-/* This table contains the norms of the 9-7 wavelets for different bands. */
-/* </summary> */
-static const double dwt_norms_real[4][10] = {
- {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}
-};
-
-/*
-==========================================================
- local functions
-==========================================================
-*/
-
-/* <summary> */
-/* Forward lazy transform (horizontal). */
-/* </summary> */
-static void dwt_deinterleave_h(int *a, int *b, int dn, int sn, int cas) {
- int i;
- for (i=0; i<sn; i++) b[i]=a[2*i+cas];
- for (i=0; i<dn; i++) b[sn+i]=a[(2*i+1-cas)];
-}
-
-/* <summary> */
-/* Forward lazy transform (vertical). */
-/* </summary> */
-static void dwt_deinterleave_v(int *a, int *b, int dn, int sn, int x, int cas) {
- int i;
- for (i=0; i<sn; i++) b[i*x]=a[2*i+cas];
- for (i=0; i<dn; i++) b[(sn+i)*x]=a[(2*i+1-cas)];
-}
-
-/* <summary> */
-/* Inverse lazy transform (horizontal). */
-/* </summary> */
-static void dwt_interleave_h(dwt_t* h, int *a) {
- int *ai = a;
- int *bi = h->mem + h->cas;
- int i = h->sn;
- while( i-- ) {
- *bi = *(ai++);
- bi += 2;
- }
- ai = a + h->sn;
- bi = h->mem + 1 - h->cas;
- i = h->dn ;
- while( i-- ) {
- *bi = *(ai++);
- bi += 2;
- }
-}
-
-/* <summary> */
-/* Inverse lazy transform (vertical). */
-/* </summary> */
-static void dwt_interleave_v(dwt_t* v, int *a, int x) {
- int *ai = a;
- int *bi = v->mem + v->cas;
- int i = v->sn;
- while( i-- ) {
- *bi = *ai;
- bi += 2;
- ai += x;
- }
- ai = a + (v->sn * x);
- bi = v->mem + 1 - v->cas;
- i = v->dn ;
- while( i-- ) {
- *bi = *ai;
- bi += 2;
- ai += x;
- }
-}
-
-
-/* <summary> */
-/* Forward 5-3 wavelet transform in 1-D. */
-/* </summary> */
-static void dwt_encode_1(int *a, int dn, int sn, int cas) {
- int i;
-
- if (!cas) {
- if ((dn > 0) || (sn > 1)) { /* NEW : CASE ONE ELEMENT */
- for (i = 0; i < dn; i++) D(i) -= (S_(i) + S_(i + 1)) >> 1;
- for (i = 0; i < sn; i++) S(i) += (D_(i - 1) + D_(i) + 2) >> 2;
- }
- } else {
- if (!sn && dn == 1) /* NEW : CASE ONE ELEMENT */
- S(0) *= 2;
- else {
- for (i = 0; i < dn; i++) S(i) -= (DD_(i) + DD_(i - 1)) >> 1;
- for (i = 0; i < sn; i++) D(i) += (SS_(i) + SS_(i + 1) + 2) >> 2;
- }
- }
-}
-
-/* <summary> */
-/* Inverse 5-3 wavelet transform in 1-D. */
-/* </summary> */
-static void dwt_decode_1_(int *a, int dn, int sn, int cas) {
- int i;
-
- if (!cas) {
- if ((dn > 0) || (sn > 1)) { /* NEW : CASE ONE ELEMENT */
- for (i = 0; i < sn; i++) S(i) -= (D_(i - 1) + D_(i) + 2) >> 2;
- for (i = 0; i < dn; i++) D(i) += (S_(i) + S_(i + 1)) >> 1;
- }
- } else {
- if (!sn && dn == 1) /* NEW : CASE ONE ELEMENT */
- S(0) /= 2;
- else {
- for (i = 0; i < sn; i++) D(i) -= (SS_(i) + SS_(i + 1) + 2) >> 2;
- for (i = 0; i < dn; i++) S(i) += (DD_(i) + DD_(i - 1)) >> 1;
- }
- }
-}
-
-/* <summary> */
-/* Inverse 5-3 wavelet transform in 1-D. */
-/* </summary> */
-static void dwt_decode_1(dwt_t *v) {
- dwt_decode_1_(v->mem, v->dn, v->sn, v->cas);
-}
-
-/* <summary> */
-/* Forward 9-7 wavelet transform in 1-D. */
-/* </summary> */
-static void dwt_encode_1_real(int *a, int dn, int sn, int cas) {
- int i;
- if (!cas) {
- if ((dn > 0) || (sn > 1)) { /* NEW : CASE ONE ELEMENT */
- for (i = 0; i < dn; i++)
- D(i) -= fix_mul(S_(i) + S_(i + 1), 12993);
- for (i = 0; i < sn; i++)
- S(i) -= fix_mul(D_(i - 1) + D_(i), 434);
- for (i = 0; i < dn; i++)
- D(i) += fix_mul(S_(i) + S_(i + 1), 7233);
- for (i = 0; i < sn; i++)
- S(i) += fix_mul(D_(i - 1) + D_(i), 3633);
- for (i = 0; i < dn; i++)
- D(i) = fix_mul(D(i), 5038); /*5038 */
- for (i = 0; i < sn; i++)
- S(i) = fix_mul(S(i), 6659); /*6660 */
- }
- } else {
- if ((sn > 0) || (dn > 1)) { /* NEW : CASE ONE ELEMENT */
- for (i = 0; i < dn; i++)
- S(i) -= fix_mul(DD_(i) + DD_(i - 1), 12993);
- for (i = 0; i < sn; i++)
- D(i) -= fix_mul(SS_(i) + SS_(i + 1), 434);
- for (i = 0; i < dn; i++)
- S(i) += fix_mul(DD_(i) + DD_(i - 1), 7233);
- for (i = 0; i < sn; i++)
- D(i) += fix_mul(SS_(i) + SS_(i + 1), 3633);
- for (i = 0; i < dn; i++)
- S(i) = fix_mul(S(i), 5038); /*5038 */
- for (i = 0; i < sn; i++)
- D(i) = fix_mul(D(i), 6659); /*6660 */
- }
- }
-}
-
-static void dwt_encode_stepsize(int stepsize, int numbps, opj_stepsize_t *bandno_stepsize) {
- int p, n;
- p = int_floorlog2(stepsize) - 13;
- n = 11 - int_floorlog2(stepsize);
- bandno_stepsize->mant = (n < 0 ? stepsize >> -n : stepsize << n) & 0x7ff;
- bandno_stepsize->expn = numbps - p;
-}
-
-/*
-==========================================================
- DWT interface
-==========================================================
-*/
-
-/* <summary> */
-/* Forward 5-3 wavelet transform in 2-D. */
-/* </summary> */
-void dwt_encode(opj_tcd_tilecomp_t * tilec) {
- int i, j, k;
- int *a = NULL;
- int *aj = NULL;
- int *bj = NULL;
- int w, l;
-
- w = tilec->x1-tilec->x0;
- l = tilec->numresolutions-1;
- a = tilec->data;
-
- for (i = 0; i < l; i++) {
- int rw; /* width of the resolution level computed */
- int rh; /* height of the resolution level computed */
- int rw1; /* width of the resolution level once lower than computed one */
- int rh1; /* height of the resolution level once lower than computed one */
- int cas_col; /* 0 = non inversion on horizontal filtering 1 = inversion between low-pass and high-pass filtering */
- int cas_row; /* 0 = non inversion on vertical filtering 1 = inversion between low-pass and high-pass filtering */
- int dn, sn;
-
- rw = tilec->resolutions[l - i].x1 - tilec->resolutions[l - i].x0;
- rh = tilec->resolutions[l - i].y1 - tilec->resolutions[l - i].y0;
- rw1= tilec->resolutions[l - i - 1].x1 - tilec->resolutions[l - i - 1].x0;
- rh1= tilec->resolutions[l - i - 1].y1 - tilec->resolutions[l - i - 1].y0;
-
- cas_row = tilec->resolutions[l - i].x0 % 2;
- cas_col = tilec->resolutions[l - i].y0 % 2;
-
- sn = rh1;
- dn = rh - rh1;
- bj = (int*)opj_malloc(rh * sizeof(int));
- for (j = 0; j < rw; j++) {
- aj = a + j;
- for (k = 0; k < rh; k++) bj[k] = aj[k*w];
- dwt_encode_1(bj, dn, sn, cas_col);
- dwt_deinterleave_v(bj, aj, dn, sn, w, cas_col);
- }
- opj_free(bj);
-
- sn = rw1;
- dn = rw - rw1;
- bj = (int*)opj_malloc(rw * sizeof(int));
- for (j = 0; j < rh; j++) {
- aj = a + j * w;
- for (k = 0; k < rw; k++) bj[k] = aj[k];
- dwt_encode_1(bj, dn, sn, cas_row);
- dwt_deinterleave_h(bj, aj, dn, sn, cas_row);
- }
- opj_free(bj);
- }
-}
-
-
-/* <summary> */
-/* Inverse 5-3 wavelet transform in 2-D. */
-/* </summary> */
-void dwt_decode(opj_tcd_tilecomp_t* tilec, int numres) {
- dwt_decode_tile(tilec, numres, &dwt_decode_1);
-}
-
-
-/* <summary> */
-/* Get gain of 5-3 wavelet transform. */
-/* </summary> */
-int dwt_getgain(int orient) {
- if (orient == 0)
- return 0;
- if (orient == 1 || orient == 2)
- return 1;
- return 2;
-}
-
-/* <summary> */
-/* Get norm of 5-3 wavelet. */
-/* </summary> */
-double dwt_getnorm(int level, int orient) {
- return dwt_norms[orient][level];
-}
-
-/* <summary> */
-/* Forward 9-7 wavelet transform in 2-D. */
-/* </summary> */
-
-void dwt_encode_real(opj_tcd_tilecomp_t * tilec) {
- int i, j, k;
- int *a = NULL;
- int *aj = NULL;
- int *bj = NULL;
- int w, l;
-
- w = tilec->x1-tilec->x0;
- l = tilec->numresolutions-1;
- a = tilec->data;
-
- for (i = 0; i < l; i++) {
- int rw; /* width of the resolution level computed */
- int rh; /* height of the resolution level computed */
- int rw1; /* width of the resolution level once lower than computed one */
- int rh1; /* height of the resolution level once lower than computed one */
- int cas_col; /* 0 = non inversion on horizontal filtering 1 = inversion between low-pass and high-pass filtering */
- int cas_row; /* 0 = non inversion on vertical filtering 1 = inversion between low-pass and high-pass filtering */
- int dn, sn;
-
- rw = tilec->resolutions[l - i].x1 - tilec->resolutions[l - i].x0;
- rh = tilec->resolutions[l - i].y1 - tilec->resolutions[l - i].y0;
- rw1= tilec->resolutions[l - i - 1].x1 - tilec->resolutions[l - i - 1].x0;
- rh1= tilec->resolutions[l - i - 1].y1 - tilec->resolutions[l - i - 1].y0;
-
- cas_row = tilec->resolutions[l - i].x0 % 2;
- cas_col = tilec->resolutions[l - i].y0 % 2;
-
- sn = rh1;
- dn = rh - rh1;
- bj = (int*)opj_malloc(rh * sizeof(int));
- for (j = 0; j < rw; j++) {
- aj = a + j;
- for (k = 0; k < rh; k++) bj[k] = aj[k*w];
- dwt_encode_1_real(bj, dn, sn, cas_col);
- dwt_deinterleave_v(bj, aj, dn, sn, w, cas_col);
- }
- opj_free(bj);
-
- sn = rw1;
- dn = rw - rw1;
- bj = (int*)opj_malloc(rw * sizeof(int));
- for (j = 0; j < rh; j++) {
- aj = a + j * w;
- for (k = 0; k < rw; k++) bj[k] = aj[k];
- dwt_encode_1_real(bj, dn, sn, cas_row);
- dwt_deinterleave_h(bj, aj, dn, sn, cas_row);
- }
- opj_free(bj);
- }
-}
-
-
-/* <summary> */
-/* Get gain of 9-7 wavelet transform. */
-/* </summary> */
-int dwt_getgain_real(int orient) {
- (void)orient;
- return 0;
-}
-
-/* <summary> */
-/* Get norm of 9-7 wavelet. */
-/* </summary> */
-double dwt_getnorm_real(int level, int orient) {
- return dwt_norms_real[orient][level];
-}
-
-void dwt_calc_explicit_stepsizes(opj_tccp_t * tccp, int prec) {
- int numbands, bandno;
- numbands = 3 * tccp->numresolutions - 2;
- for (bandno = 0; bandno < numbands; bandno++) {
- double stepsize;
- int resno, level, orient, gain;
-
- resno = (bandno == 0) ? 0 : ((bandno - 1) / 3 + 1);
- orient = (bandno == 0) ? 0 : ((bandno - 1) % 3 + 1);
- level = tccp->numresolutions - 1 - resno;
- gain = (tccp->qmfbid == 0) ? 0 : ((orient == 0) ? 0 : (((orient == 1) || (orient == 2)) ? 1 : 2));
- if (tccp->qntsty == J2K_CCP_QNTSTY_NOQNT) {
- stepsize = 1.0;
- } else {
- double norm = dwt_norms_real[orient][level];
- stepsize = (1 << (gain)) / norm;
- }
- dwt_encode_stepsize((int) floor(stepsize * 8192.0), prec + gain, &tccp->stepsizes[bandno]);
- }
-}
-
-
-/* <summary> */
-/* Determine maximum computed resolution level for inverse wavelet transform */
-/* </summary> */
-static int dwt_decode_max_resolution(opj_tcd_resolution_t* restrict r, int i) {
- int mr = 1;
- int w;
- while( --i ) {
- r++;
- if( mr < ( w = r->x1 - r->x0 ) )
- mr = w ;
- if( mr < ( w = r->y1 - r->y0 ) )
- mr = w ;
- }
- return mr ;
-}
-
-
-/* <summary> */
-/* Inverse wavelet transform in 2-D. */
-/* </summary> */
-static void dwt_decode_tile(opj_tcd_tilecomp_t* tilec, int numres, DWT1DFN dwt_1D) {
- dwt_t h;
- dwt_t v;
-
- opj_tcd_resolution_t* tr = tilec->resolutions;
-
- int rw = tr->x1 - tr->x0; /* width of the resolution level computed */
- int rh = tr->y1 - tr->y0; /* height of the resolution level computed */
-
- int w = tilec->x1 - tilec->x0;
-
- h.mem = (int*)opj_aligned_malloc(dwt_decode_max_resolution(tr, numres) * sizeof(int));
- v.mem = h.mem;
-
- while( --numres) {
- int * restrict tiledp = tilec->data;
- int j;
-
- ++tr;
- h.sn = rw;
- v.sn = rh;
-
- rw = tr->x1 - tr->x0;
- rh = tr->y1 - tr->y0;
-
- h.dn = rw - h.sn;
- h.cas = tr->x0 % 2;
-
- for(j = 0; j < rh; ++j) {
- dwt_interleave_h(&h, &tiledp[j*w]);
- (dwt_1D)(&h);
- memcpy(&tiledp[j*w], h.mem, rw * sizeof(int));
- }
-
- v.dn = rh - v.sn;
- v.cas = tr->y0 % 2;
-
- for(j = 0; j < rw; ++j){
- int k;
- dwt_interleave_v(&v, &tiledp[j], w);
- (dwt_1D)(&v);
- for(k = 0; k < rh; ++k) {
- tiledp[k * w + j] = v.mem[k];
- }
- }
- }
- opj_aligned_free(h.mem);
-}
-
-static void v4dwt_interleave_h(v4dwt_t* restrict w, float* restrict a, int x, int size){
- float* restrict bi = (float*) (w->wavelet + w->cas);
- int count = w->sn;
- int i, k;
- for(k = 0; k < 2; ++k){
- if (count + 3 * x < size && ((size_t) a & 0x0f) == 0 && ((size_t) bi & 0x0f) == 0 && (x & 0x0f) == 0) {
- /* Fast code path */
- for(i = 0; i < count; ++i){
- int j = i;
- bi[i*8 ] = a[j];
- j += x;
- bi[i*8 + 1] = a[j];
- j += x;
- bi[i*8 + 2] = a[j];
- j += x;
- bi[i*8 + 3] = a[j];
- }
- } else {
- /* Slow code path */
- for(i = 0; i < count; ++i){
- int j = i;
- bi[i*8 ] = a[j];
- j += x;
- if(j > size) continue;
- bi[i*8 + 1] = a[j];
- j += x;
- if(j > size) continue;
- bi[i*8 + 2] = a[j];
- j += x;
- if(j > size) continue;
- bi[i*8 + 3] = a[j];
- }
- }
- bi = (float*) (w->wavelet + 1 - w->cas);
- a += w->sn;
- size -= w->sn;
- count = w->dn;
- }
-}
-
-static void v4dwt_interleave_v(v4dwt_t* restrict v , float* restrict a , int x){
- v4* restrict bi = v->wavelet + v->cas;
- int i;
- for(i = 0; i < v->sn; ++i){
- memcpy(&bi[i*2], &a[i*x], 4 * sizeof(float));
- }
- a += v->sn * x;
- bi = v->wavelet + 1 - v->cas;
- for(i = 0; i < v->dn; ++i){
- memcpy(&bi[i*2], &a[i*x], 4 * sizeof(float));
- }
-}
-
-#ifdef __SSE__
-
-static void v4dwt_decode_step1_sse(v4* w, int count, const __m128 c){
- __m128* restrict vw = (__m128*) w;
- int i;
- /* 4x unrolled loop */
- for(i = 0; i < count >> 2; ++i){
- *vw = _mm_mul_ps(*vw, c);
- vw += 2;
- *vw = _mm_mul_ps(*vw, c);
- vw += 2;
- *vw = _mm_mul_ps(*vw, c);
- vw += 2;
- *vw = _mm_mul_ps(*vw, c);
- vw += 2;
- }
- count &= 3;
- for(i = 0; i < count; ++i){
- *vw = _mm_mul_ps(*vw, c);
- vw += 2;
- }
-}
-
-static void v4dwt_decode_step2_sse(v4* l, v4* w, int k, int m, __m128 c){
- __m128* restrict vl = (__m128*) l;
- __m128* restrict vw = (__m128*) w;
- int i;
- __m128 tmp1, tmp2, tmp3;
- tmp1 = vl[0];
- for(i = 0; i < m; ++i){
- tmp2 = vw[-1];
- tmp3 = vw[ 0];
- vw[-1] = _mm_add_ps(tmp2, _mm_mul_ps(_mm_add_ps(tmp1, tmp3), c));
- tmp1 = tmp3;
- vw += 2;
- }
- vl = vw - 2;
- if(m >= k){
- return;
- }
- c = _mm_add_ps(c, c);
- c = _mm_mul_ps(c, vl[0]);
- for(; m < k; ++m){
- __m128 tmp = vw[-1];
- vw[-1] = _mm_add_ps(tmp, c);
- vw += 2;
- }
-}
-
-#else
-
-static void v4dwt_decode_step1(v4* w, int count, const float c){
- float* restrict fw = (float*) w;
- int i;
- for(i = 0; i < count; ++i){
- float tmp1 = fw[i*8 ];
- float tmp2 = fw[i*8 + 1];
- float tmp3 = fw[i*8 + 2];
- float tmp4 = fw[i*8 + 3];
- fw[i*8 ] = tmp1 * c;
- fw[i*8 + 1] = tmp2 * c;
- fw[i*8 + 2] = tmp3 * c;
- fw[i*8 + 3] = tmp4 * c;
- }
-}
-
-static void v4dwt_decode_step2(v4* l, v4* w, int k, int m, float c){
- float* restrict fl = (float*) l;
- float* restrict fw = (float*) w;
- int i;
- for(i = 0; i < m; ++i){
- float tmp1_1 = fl[0];
- float tmp1_2 = fl[1];
- float tmp1_3 = fl[2];
- float tmp1_4 = fl[3];
- float tmp2_1 = fw[-4];
- float tmp2_2 = fw[-3];
- float tmp2_3 = fw[-2];
- float tmp2_4 = fw[-1];
- float tmp3_1 = fw[0];
- float tmp3_2 = fw[1];
- float tmp3_3 = fw[2];
- float tmp3_4 = fw[3];
- fw[-4] = tmp2_1 + ((tmp1_1 + tmp3_1) * c);
- fw[-3] = tmp2_2 + ((tmp1_2 + tmp3_2) * c);
- fw[-2] = tmp2_3 + ((tmp1_3 + tmp3_3) * c);
- fw[-1] = tmp2_4 + ((tmp1_4 + tmp3_4) * c);
- fl = fw;
- fw += 8;
- }
- if(m < k){
- float c1;
- float c2;
- float c3;
- float c4;
- c += c;
- c1 = fl[0] * c;
- c2 = fl[1] * c;
- c3 = fl[2] * c;
- c4 = fl[3] * c;
- for(; m < k; ++m){
- float tmp1 = fw[-4];
- float tmp2 = fw[-3];
- float tmp3 = fw[-2];
- float tmp4 = fw[-1];
- fw[-4] = tmp1 + c1;
- fw[-3] = tmp2 + c2;
- fw[-2] = tmp3 + c3;
- fw[-1] = tmp4 + c4;
- fw += 8;
- }
- }
-}
-
-#endif
-
-/* <summary> */
-/* Inverse 9-7 wavelet transform in 1-D. */
-/* </summary> */
-static void v4dwt_decode(v4dwt_t* restrict dwt){
- int a, b;
- if(dwt->cas == 0) {
- if(!((dwt->dn > 0) || (dwt->sn > 1))){
- return;
- }
- a = 0;
- b = 1;
- }else{
- if(!((dwt->sn > 0) || (dwt->dn > 1))) {
- return;
- }
- a = 1;
- b = 0;
- }
-#ifdef __SSE__
- v4dwt_decode_step1_sse(dwt->wavelet+a, dwt->sn, _mm_set1_ps(K));
- v4dwt_decode_step1_sse(dwt->wavelet+b, dwt->dn, _mm_set1_ps(c13318));
- v4dwt_decode_step2_sse(dwt->wavelet+b, dwt->wavelet+a+1, dwt->sn, int_min(dwt->sn, dwt->dn-a), _mm_set1_ps(dwt_delta));
- v4dwt_decode_step2_sse(dwt->wavelet+a, dwt->wavelet+b+1, dwt->dn, int_min(dwt->dn, dwt->sn-b), _mm_set1_ps(dwt_gamma));
- v4dwt_decode_step2_sse(dwt->wavelet+b, dwt->wavelet+a+1, dwt->sn, int_min(dwt->sn, dwt->dn-a), _mm_set1_ps(dwt_beta));
- v4dwt_decode_step2_sse(dwt->wavelet+a, dwt->wavelet+b+1, dwt->dn, int_min(dwt->dn, dwt->sn-b), _mm_set1_ps(dwt_alpha));
-#else
- v4dwt_decode_step1(dwt->wavelet+a, dwt->sn, K);
- v4dwt_decode_step1(dwt->wavelet+b, dwt->dn, c13318);
- v4dwt_decode_step2(dwt->wavelet+b, dwt->wavelet+a+1, dwt->sn, int_min(dwt->sn, dwt->dn-a), dwt_delta);
- v4dwt_decode_step2(dwt->wavelet+a, dwt->wavelet+b+1, dwt->dn, int_min(dwt->dn, dwt->sn-b), dwt_gamma);
- v4dwt_decode_step2(dwt->wavelet+b, dwt->wavelet+a+1, dwt->sn, int_min(dwt->sn, dwt->dn-a), dwt_beta);
- v4dwt_decode_step2(dwt->wavelet+a, dwt->wavelet+b+1, dwt->dn, int_min(dwt->dn, dwt->sn-b), dwt_alpha);
-#endif
-}
-
-/* <summary> */
-/* Inverse 9-7 wavelet transform in 2-D. */
-/* </summary> */
-void dwt_decode_real(opj_tcd_tilecomp_t* restrict tilec, int numres){
- v4dwt_t h;
- v4dwt_t v;
-
- opj_tcd_resolution_t* res = tilec->resolutions;
-
- int rw = res->x1 - res->x0; /* width of the resolution level computed */
- int rh = res->y1 - res->y0; /* height of the resolution level computed */
-
- int w = tilec->x1 - tilec->x0;
-
- h.wavelet = (v4*) opj_aligned_malloc((dwt_decode_max_resolution(res, numres)+5) * sizeof(v4));
- v.wavelet = h.wavelet;
-
- while( --numres) {
- float * restrict aj = (float*) tilec->data;
- int bufsize = (tilec->x1 - tilec->x0) * (tilec->y1 - tilec->y0);
- int j;
-
- h.sn = rw;
- v.sn = rh;
-
- ++res;
-
- rw = res->x1 - res->x0; /* width of the resolution level computed */
- rh = res->y1 - res->y0; /* height of the resolution level computed */
-
- h.dn = rw - h.sn;
- h.cas = res->x0 % 2;
-
- for(j = rh; j > 3; j -= 4){
- int k;
- v4dwt_interleave_h(&h, aj, w, bufsize);
- v4dwt_decode(&h);
- for(k = rw; --k >= 0;){
- aj[k ] = h.wavelet[k].f[0];
- aj[k+w ] = h.wavelet[k].f[1];
- aj[k+w*2] = h.wavelet[k].f[2];
- aj[k+w*3] = h.wavelet[k].f[3];
- }
- aj += w*4;
- bufsize -= w*4;
- }
- if (rh & 0x03) {
- int k;
- j = rh & 0x03;
- v4dwt_interleave_h(&h, aj, w, bufsize);
- v4dwt_decode(&h);
- for(k = rw; --k >= 0;){
- switch(j) {
- case 3: aj[k+w*2] = h.wavelet[k].f[2];
- case 2: aj[k+w ] = h.wavelet[k].f[1];
- case 1: aj[k ] = h.wavelet[k].f[0];
- }
- }
- }
-
- v.dn = rh - v.sn;
- v.cas = res->y0 % 2;
-
- aj = (float*) tilec->data;
- for(j = rw; j > 3; j -= 4){
- int k;
- v4dwt_interleave_v(&v, aj, w);
- v4dwt_decode(&v);
- for(k = 0; k < rh; ++k){
- memcpy(&aj[k*w], &v.wavelet[k], 4 * sizeof(float));
- }
- aj += 4;
- }
- if (rw & 0x03){
- int k;
- j = rw & 0x03;
- v4dwt_interleave_v(&v, aj, w);
- v4dwt_decode(&v);
- for(k = 0; k < rh; ++k){
- memcpy(&aj[k*w], &v.wavelet[k], j * sizeof(float));
- }
- }
- }
-
- opj_aligned_free(h.wavelet);
-}
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-25 14:07:40 +0300