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+/*
+ * Copyright (c) 2001-2002, David Janssens
+ * Copyright (c) 2002-2003, Yannick Verschueren
+ * Copyright (c) 2002-2003, Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium
+ * 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.
+ */
+
+#include "dwt.h"
+#include "int.h"
+#include "fix.h"
+#include "tcd.h"
+#include <stdlib.h>
+#include <stdio.h>
+
+#define S(i) a[x*(i)*2]
+#define D(i) a[x*(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> */
+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> */
+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}
+};
+
+/* Add Patrick */
+static int *b = NULL;
+static int lastSizeOfB = 0;
+
+
+void dwt_clean()
+{
+ if (b != NULL) {
+ free(b);
+ }
+ b = NULL;
+ lastSizeOfB = 0;
+}
+
+/* \ Add Patrick */
+
+/* <summary> */
+/* Forward lazy transform. */
+/* </summary> */
+void dwt_deinterleave(int *a, int n, int x, int res, int cas)
+{
+ int dn, sn, i;
+ sn = res;
+ dn = n - res;
+ if (lastSizeOfB != n) {
+ if (b != NULL)
+ free(b);
+ b = (int *) malloc(n * sizeof(int));
+ lastSizeOfB = n;
+ }
+
+ if (cas) {
+ for (i = 0; i < sn; i++)
+ b[i] = a[(2 * i + 1) * x];
+ for (i = 0; i < dn; i++)
+ b[sn + i] = a[2 * i * x];
+ } else {
+ for (i = 0; i < sn; i++)
+ b[i] = a[2 * i * x];
+ for (i = 0; i < dn; i++)
+ b[sn + i] = a[(2 * i + 1) * x];
+ }
+ for (i = 0; i < n; i++)
+ a[i * x] = b[i];
+}
+
+/* <summary> */
+/* Forward lazy transform. */
+/* </summary> */
+void dwt_deinterleave_real(int *a, int n, int x, int res, int cas)
+{
+ int dn, sn, i;
+ sn = res;
+ dn = n - res;
+
+ if (lastSizeOfB != n) {
+ if (b != NULL)
+ free(b);
+ b = (int *) malloc(n * sizeof(int));
+ lastSizeOfB = n;
+ }
+
+ if (cas) {
+ for (i = 0; i < sn; i++)
+ b[i] = a[(2 * i + 1) * x];
+ for (i = 0; i < dn; i++)
+ b[sn + i] = a[2 * i * x];
+ } else {
+ for (i = 0; i < sn; i++)
+ b[i] = a[2 * i * x];
+ for (i = 0; i < dn; i++)
+ b[sn + i] = a[(2 * i + 1) * x];
+ }
+ for (i = 0; i < n; i++)
+ a[i * x] = b[i];
+
+}
+
+/* <summary> */
+/* Inverse lazy transform. */
+/* </summary> */
+void dwt_interleave(int *a, int n, int x, int res, int cas)
+{
+ int dn, sn, i;
+ sn = res;
+ dn = n - res;
+
+ if (lastSizeOfB != n) {
+ if (b != NULL)
+ free(b);
+ b = (int *) malloc(n * sizeof(int));
+ lastSizeOfB = n;
+ }
+
+ if (cas) {
+ for (i = 0; i < sn; i++)
+ b[2 * i + 1] = a[i * x];
+ for (i = 0; i < dn; i++)
+ b[2 * i] = a[(sn + i) * x];
+ } else {
+ for (i = 0; i < sn; i++)
+ b[2 * i] = a[i * x];
+ for (i = 0; i < dn; i++)
+ b[2 * i + 1] = a[(sn + i) * x];
+ }
+ for (i = 0; i < n; i++)
+ a[i * x] = b[i];
+}
+
+/* <summary> */
+/* Inverse lazy transform. */
+/* </summary> */
+void dwt_interleave_real(int *a, int n, int x, int res, int cas)
+{
+ int dn, sn, i;
+ sn = res;
+ dn = n - res;
+
+ if (lastSizeOfB != n) {
+ if (b != NULL)
+ free(b);
+ b = (int *) malloc(n * sizeof(int));
+ lastSizeOfB = n;
+ }
+
+ if (cas) {
+ for (i = 0; i < sn; i++)
+ b[2 * i + 1] = a[i * x];
+ for (i = 0; i < dn; i++)
+ b[2 * i] = a[(sn + i) * x];
+ } else {
+ for (i = 0; i < sn; i++)
+ b[2 * i] = a[i * x];
+ for (i = 0; i < dn; i++)
+ b[2 * i + 1] = a[(sn + i) * x];
+ }
+ for (i = 0; i < n; i++)
+ a[i * x] = b[i];
+
+}
+
+/* <summary> */
+/* Forward 5-3 wavelet tranform in 1-D. */
+/* </summary> */
+void dwt_encode_1(int *a, int n, int x, int res, int cas)
+{
+ int dn, sn, i = 0;
+ sn = res;
+ dn = n - res;
+
+ if (cas) {
+ if (!sn && dn == 1) /* NEW : CASE ONE ELEMENT */
+ S(i) *= 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;
+ }
+ } else {
+ 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;
+ }
+ }
+ dwt_deinterleave(a, n, x, res, cas);
+}
+
+/* <summary> */
+/* Inverse 5-3 wavelet tranform in 1-D. */
+/* </summary> */
+void dwt_decode_1(int *a, int n, int x, int res, int cas)
+{
+ int dn, sn, i = 0;
+ /* dn=n/2; */
+ /* sn=(n+1)/2; */
+ sn = res;
+ dn = n - res;
+
+ dwt_interleave(a, n, x, res, cas);
+ if (cas) {
+ if (!sn && dn == 1) /* NEW : CASE ONE ELEMENT */
+ S(i) /= 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;
+ }
+ } else {
+ 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;
+ }
+ }
+}
+
+/* <summary> */
+/* Forward 5-3 wavelet tranform in 2-D. */
+/* </summary> */
+void dwt_encode(int *a, int w, int h, tcd_tilecomp_t * tilec, int l)
+{
+ int i, j, rw, rh, rw1, rh1;
+ int previous_rw, previous_rh, previous_rw1, previous_rh1;
+
+ for (i = 0; i < l; i++) {
+ int cas_col = 0;
+ int cas_row = 0;
+ 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;
+
+ /* Check the different cases for that it's necessary to invert high pass and low pass filter */
+
+ if (tilec->previous_row) {
+ previous_rw =
+ tilec->resolutions[l - i].previous_x1 - tilec->resolutions[l -
+ i].
+ previous_x0;
+ previous_rw1 =
+ tilec->resolutions[l - i - 1].previous_x1 - tilec->resolutions[l -
+ i -
+ 1].
+ previous_x0;
+ /* inversion on the previous and propagation of the inversion on the other tile */
+ if ((previous_rw1 > previous_rw - previous_rw1 && rw1 == rw - rw1)
+ || (tilec->resolutions[l - i - 1].cas_row
+ && previous_rw1 == previous_rw - previous_rw1))
+ cas_row = 1;
+ }
+
+ if (tilec->previous_col) {
+ previous_rh =
+ tilec->resolutions[l - i].previous_y1 - tilec->resolutions[l -
+ i].
+ previous_y0;
+ previous_rh1 =
+ tilec->resolutions[l - i - 1].previous_y1 - tilec->resolutions[l -
+ i -
+ 1].
+ previous_y0;
+ /* inversion on the previous and propagation of the inversion on the other tile */
+ if ((previous_rh1 > previous_rh - previous_rh1 && rh1 == rh - rh1)
+ || (tilec->resolutions[l - i - 1].cas_col
+ && previous_rh1 == previous_rh - previous_rh1))
+ cas_col = 1;
+ }
+
+ /* subband LL shorter than LH or HL */
+ if (rw1 < rw - rw1)
+ cas_row = 1;
+ if (rh1 < rh - rh1)
+ cas_col = 1;
+
+ /* OFFSET IMAGE (If origin of the resolution is odd and first tile on the row or column) */
+ if (!tilec->previous_row && ((tilec->resolutions[l - i].x0 % 2) == 1))
+ cas_row = 1;
+ if (!tilec->previous_col && ((tilec->resolutions[l - i].y0 % 2) == 1))
+ cas_col = 1;
+
+ tilec->resolutions[l - i - 1].cas_row = cas_row;
+ tilec->resolutions[l - i - 1].cas_col = cas_col;
+
+ for (j = 0; j < rw; j++)
+ dwt_encode_1(a + j, rh, w, rh1, cas_col);
+ for (j = 0; j < rh; j++)
+ dwt_encode_1(a + j * w, rw, 1, rw1, cas_row);
+ }
+
+ dwt_clean();
+}
+
+/* <summary> */
+/* Inverse 5-3 wavelet tranform in 2-D. */
+/* </summary> */
+void dwt_decode(int *a, int w, int h, tcd_tilecomp_t * tilec, int l,
+ tcd_tilecomp_t * row_tilec, tcd_tilecomp_t * col_tilec)
+{
+ int i, j, rw, rh, rw1, rh1;
+ int previous_rw, previous_rh, previous_rw1, previous_rh1;
+ for (i = l - 1; i >= 0; i--) {
+ int cas_col = 0;
+ int cas_row = 0;
+
+ 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;
+
+ if (tilec->previous_row) {
+ previous_rw =
+ tilec->resolutions[l - i].previous_x1 - tilec->resolutions[l -
+ i].
+ previous_x0;
+ previous_rw1 =
+ tilec->resolutions[l - i - 1].previous_x1 - tilec->resolutions[l -
+ i -
+ 1].
+ previous_x0;
+ if ((previous_rw1 > previous_rw - previous_rw1 && rw1 == rw - rw1)
+ || (row_tilec->resolutions[l - i - 1].cas_row
+ && previous_rw1 == previous_rw - previous_rw1))
+ cas_row = 1;
+ }
+
+ if (tilec->previous_col) {
+ previous_rh =
+ tilec->resolutions[l - i].previous_y1 - tilec->resolutions[l -
+ i].
+ previous_y0;
+ previous_rh1 =
+ tilec->resolutions[l - i - 1].previous_y1 - tilec->resolutions[l -
+ i -
+ 1].
+ previous_y0;
+ if ((previous_rh1 > previous_rh - previous_rh1 && rh1 == rh - rh1)
+ || (col_tilec->resolutions[l - i - 1].cas_col
+ && previous_rh1 == previous_rh - previous_rh1))
+ cas_col = 1;
+ }
+
+ if (rw1 < rw - rw1)
+ cas_row = 1;
+ if (rh1 < rh - rh1)
+ cas_col = 1;
+
+ /* OFFSET IMAGE (If origin of the resolution is odd and first tile on the row or column) */
+ if (!tilec->previous_row && ((tilec->resolutions[l - i].x0 % 2) == 1))
+ cas_row = 1;
+ if (!tilec->previous_col && ((tilec->resolutions[l - i].y0 % 2) == 1))
+ cas_col = 1;
+
+ tilec->resolutions[l - i - 1].cas_row = cas_row;
+ tilec->resolutions[l - i - 1].cas_col = cas_col;
+
+ for (j = 0; j < rh; j++)
+ dwt_decode_1(a + j * w, rw, 1, rw1, cas_row);
+ for (j = 0; j < rw; j++)
+ dwt_decode_1(a + j, rh, w, rh1, cas_col);
+ }
+ dwt_clean();
+}
+
+/* <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 1-D. */
+/* </summary> */
+void dwt_encode_1_real(int *a, int n, int x, int res, int cas)
+{
+ int dn, sn, i = 0;
+ dn = n - res;
+ sn = res;
+
+ if (cas) {
+ 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);
+ for (i = 0; i < sn; i++)
+ D(i) = fix_mul(D(i), 6660);
+ }
+ } else {
+ 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);
+ for (i = 0; i < sn; i++)
+ S(i) = fix_mul(S(i), 6660);
+ }
+ }
+ dwt_deinterleave_real(a, n, x, res, cas);
+}
+
+/* <summary> */
+/* Inverse 9-7 wavelet transform in 1-D. */
+/* </summary> */
+void dwt_decode_1_real(int *a, int n, int x, int res, int cas)
+{
+ int dn, sn, i = 0;
+ dn = n - res;
+ sn = res;
+ dwt_interleave_real(a, n, x, res, cas);
+ if (cas) {
+ if ((sn > 0) || (dn > 1)) { /* NEW : CASE ONE ELEMENT */
+ for (i = 0; i < sn; i++)
+ D(i) = fix_mul(D(i), 10076);
+ for (i = 0; i < dn; i++)
+ S(i) = fix_mul(S(i), 13320);
+ 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(DD_(i) + DD_(i - 1), 7233);
+ 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), 12993);
+ }
+ } else {
+ if ((dn > 0) || (sn > 1)) { /* NEW : CASE ONE ELEMENT */
+ for (i = 0; i < sn; i++)
+ S(i) = fix_mul(S(i), 10076);
+ for (i = 0; i < dn; i++)
+ D(i) = fix_mul(D(i), 13320);
+ 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(S_(i) + S_(i + 1), 7233);
+ 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), 12993);
+ }
+ }
+}
+
+/* <summary> */
+/* Forward 9-7 wavelet transform in 2-D. */
+/* </summary> */
+
+void dwt_encode_real(int *a, int w, int h, tcd_tilecomp_t * tilec, int l)
+{
+ int i, j, rw, rh, rw1, rh1;
+ int previous_rw, previous_rh, previous_rw1, previous_rh1;
+
+ for (i = 0; i < l; i++) {
+ int cas_col = 0;
+ int cas_row = 0;
+ 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;
+
+ if (tilec->previous_row) {
+ previous_rw =
+ tilec->resolutions[l - i].previous_x1 - tilec->resolutions[l -
+ i].
+ previous_x0;
+ previous_rw1 =
+ tilec->resolutions[l - i - 1].previous_x1 - tilec->resolutions[l -
+ i -
+ 1].
+ previous_x0;
+ if ((previous_rw1 > previous_rw - previous_rw1 && rw1 == rw - rw1)
+ || (tilec->resolutions[l - i - 1].cas_row
+ && previous_rw1 == previous_rw - previous_rw1))
+ cas_row = 1;
+ }
+
+ if (tilec->previous_col) {
+ previous_rh =
+ tilec->resolutions[l - i].previous_y1 - tilec->resolutions[l -
+ i].
+ previous_y0;
+ previous_rh1 =
+ tilec->resolutions[l - i - 1].previous_y1 - tilec->resolutions[l -
+ i -
+ 1].
+ previous_y0;
+ if ((previous_rh1 > previous_rh - previous_rh1 && rh1 == rh - rh1)
+ || (tilec->resolutions[l - i - 1].cas_col
+ && previous_rh1 == previous_rh - previous_rh1))
+ cas_col = 1;
+ }
+
+ if (rw1 < rw - rw1)
+ cas_row = 1;
+ if (rh1 < rh - rh1)
+ cas_col = 1;
+
+ /* OFFSET IMAGE (If origin of the resolution is odd and first tile on the row or column) */
+ if (!tilec->previous_row && ((tilec->resolutions[l - i].x0 % 2) == 1))
+ cas_row = 1;
+ if (!tilec->previous_col && ((tilec->resolutions[l - i].y0 % 2) == 1))
+ cas_col = 1;
+
+ tilec->resolutions[l - i - 1].cas_row = cas_row;
+ tilec->resolutions[l - i - 1].cas_col = cas_col;
+
+ for (j = 0; j < rw; j++)
+ dwt_encode_1_real(a + j, rh, w, rh1, cas_col);
+ for (j = 0; j < rh; j++)
+ dwt_encode_1_real(a + j * w, rw, 1, rw1, cas_row);
+ }
+}
+
+/* <summary> */
+/* Inverse 9-7 wavelet transform in 2-D. */
+/* </summary> */
+void dwt_decode_real(int *a, int w, int h, tcd_tilecomp_t * tilec, int l,
+ tcd_tilecomp_t * row_tilec,
+ tcd_tilecomp_t * col_tilec)
+{
+ int i, j, rw, rh, rw1, rh1;
+ int previous_rw, previous_rh, previous_rw1, previous_rh1;
+
+ for (i = l - 1; i >= 0; i--) {
+ int cas_col = 0;
+ int cas_row = 0;
+
+ 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;
+
+ if (tilec->previous_row) {
+ previous_rw =
+ tilec->resolutions[l - i].previous_x1 - tilec->resolutions[l -
+ i].
+ previous_x0;
+ previous_rw1 =
+ tilec->resolutions[l - i - 1].previous_x1 - tilec->resolutions[l -
+ i -
+ 1].
+ previous_x0;
+ if ((previous_rw1 > previous_rw - previous_rw1 && rw1 == rw - rw1)
+ || (row_tilec->resolutions[l - i - 1].cas_row
+ && previous_rw1 == previous_rw - previous_rw1))
+ cas_row = 1;
+ }
+
+ if (tilec->previous_col) {
+ previous_rh =
+ tilec->resolutions[l - i].previous_y1 - tilec->resolutions[l -
+ i].
+ previous_y0;
+ previous_rh1 =
+ tilec->resolutions[l - i - 1].previous_y1 - tilec->resolutions[l -
+ i -
+ 1].
+ previous_y0;
+ if ((previous_rh1 > previous_rh - previous_rh1 && rh1 == rh - rh1)
+ || (col_tilec->resolutions[l - i - 1].cas_col
+ && previous_rh1 == previous_rh - previous_rh1))
+ cas_col = 1;
+ }
+
+ if (rw1 < rw - rw1)
+ cas_row = 1;
+ if (rh1 < rh - rh1)
+ cas_col = 1;
+
+ /* OFFSET IMAGE (If origin of the resolution is odd and first tile on the row or column) */
+ if (!tilec->previous_row && ((tilec->resolutions[l - i].x0 % 2) == 1))
+ cas_row = 1;
+ if (!tilec->previous_col && ((tilec->resolutions[l - i].y0 % 2) == 1))
+ cas_col = 1;
+
+ tilec->resolutions[l - i - 1].cas_row = cas_row;
+ tilec->resolutions[l - i - 1].cas_col = cas_col;
+
+ for (j = 0; j < rh; j++)
+ dwt_decode_1_real(a + j * w, rw, 1, rw1, cas_row);
+ for (j = 0; j < rw; j++)
+ dwt_decode_1_real(a + j, rh, w, rh1, cas_col);
+ }
+}
+
+/* <summary> */
+/* Get gain of 9-7 wavelet transform. */
+/* </summary> */
+int dwt_getgain_real(int 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];
+}
generated by cgit v1.2.3 (git 2.46.0) at 2026-04-06 12:33:30 +0000