--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/openjpeg/src/lib/openjp2/bench_dwt.c	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,354 @@
+/*
+ * The copyright in this software is being made available under the 2-clauses
+ * BSD License, included below. This software may be subject to other third
+ * party and contributor rights, including patent rights, and no such rights
+ * are granted under this license.
+ *
+ * Copyright (c) 2017, IntoPix SA <contact@intopix.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.
+ */
+
+#include "opj_includes.h"
+
+#ifdef _WIN32
+#include <windows.h>
+#else
+#include <sys/time.h>
+#include <sys/resource.h>
+#include <sys/times.h>
+#endif /* _WIN32 */
+
+OPJ_INT32 getValue(OPJ_UINT32 i)
+{
+    return ((OPJ_INT32)i % 511) - 256;
+}
+
+void init_tilec(opj_tcd_tilecomp_t * l_tilec,
+                OPJ_INT32 x0,
+                OPJ_INT32 y0,
+                OPJ_INT32 x1,
+                OPJ_INT32 y1,
+                OPJ_UINT32 numresolutions,
+                OPJ_BOOL irreversible)
+{
+    opj_tcd_resolution_t* l_res;
+    OPJ_UINT32 resno, l_level_no;
+    size_t i, nValues;
+
+    memset(l_tilec, 0, sizeof(*l_tilec));
+    l_tilec->x0 = x0;
+    l_tilec->y0 = y0;
+    l_tilec->x1 = x1;
+    l_tilec->y1 = y1;
+    nValues = (size_t)(l_tilec->x1 - l_tilec->x0) *
+              (size_t)(l_tilec->y1 - l_tilec->y0);
+    l_tilec->data = (OPJ_INT32*) opj_malloc(sizeof(OPJ_INT32) * nValues);
+    assert(l_tilec->data != NULL);
+    for (i = 0; i < nValues; i++) {
+        OPJ_INT32 val = getValue((OPJ_UINT32)i);
+        if (irreversible) {
+            OPJ_FLOAT32 fVal = (OPJ_FLOAT32)val;
+            memcpy(&l_tilec->data[i], &fVal, sizeof(OPJ_FLOAT32));
+        } else {
+            l_tilec->data[i] = val;
+        }
+    }
+    l_tilec->numresolutions = numresolutions;
+    l_tilec->minimum_num_resolutions = numresolutions;
+    l_tilec->resolutions = (opj_tcd_resolution_t*) opj_calloc(
+                               l_tilec->numresolutions,
+                               sizeof(opj_tcd_resolution_t));
+
+    l_level_no = l_tilec->numresolutions;
+    l_res = l_tilec->resolutions;
+
+    /* Adapted from opj_tcd_init_tile() */
+    for (resno = 0; resno < l_tilec->numresolutions; ++resno) {
+
+        --l_level_no;
+
+        /* border for each resolution level (global) */
+        l_res->x0 = opj_int_ceildivpow2(l_tilec->x0, (OPJ_INT32)l_level_no);
+        l_res->y0 = opj_int_ceildivpow2(l_tilec->y0, (OPJ_INT32)l_level_no);
+        l_res->x1 = opj_int_ceildivpow2(l_tilec->x1, (OPJ_INT32)l_level_no);
+        l_res->y1 = opj_int_ceildivpow2(l_tilec->y1, (OPJ_INT32)l_level_no);
+
+        ++l_res;
+    }
+}
+
+void free_tilec(opj_tcd_tilecomp_t * l_tilec)
+{
+    opj_free(l_tilec->data);
+    opj_free(l_tilec->resolutions);
+}
+
+void usage(void)
+{
+    printf(
+        "bench_dwt [-decode|encode] [-I] [-size value] [-check] [-display]\n");
+    printf(
+        "          [-num_resolutions val] [-offset x y] [-num_threads val]\n");
+    exit(1);
+}
+
+
+OPJ_FLOAT64 opj_clock(void)
+{
+#ifdef _WIN32
+    /* _WIN32: use QueryPerformance (very accurate) */
+    LARGE_INTEGER freq, t ;
+    /* freq is the clock speed of the CPU */
+    QueryPerformanceFrequency(&freq) ;
+    /* cout << "freq = " << ((double) freq.QuadPart) << endl; */
+    /* t is the high resolution performance counter (see MSDN) */
+    QueryPerformanceCounter(& t) ;
+    return freq.QuadPart ? (t.QuadPart / (OPJ_FLOAT64) freq.QuadPart) : 0 ;
+#else
+    /* Unix or Linux: use resource usage */
+    struct rusage t;
+    OPJ_FLOAT64 procTime;
+    /* (1) Get the rusage data structure at this moment (man getrusage) */
+    getrusage(0, &t);
+    /* (2) What is the elapsed time ? - CPU time = User time + System time */
+    /* (2a) Get the seconds */
+    procTime = (OPJ_FLOAT64)(t.ru_utime.tv_sec + t.ru_stime.tv_sec);
+    /* (2b) More precisely! Get the microseconds part ! */
+    return (procTime + (OPJ_FLOAT64)(t.ru_utime.tv_usec + t.ru_stime.tv_usec) *
+            1e-6) ;
+#endif
+}
+
+static OPJ_FLOAT64 opj_wallclock(void)
+{
+#ifdef _WIN32
+    return opj_clock();
+#else
+    struct timeval tv;
+    gettimeofday(&tv, NULL);
+    return (OPJ_FLOAT64)tv.tv_sec + 1e-6 * (OPJ_FLOAT64)tv.tv_usec;
+#endif
+}
+
+int main(int argc, char** argv)
+{
+    int num_threads = 0;
+    opj_tcd_t tcd;
+    opj_tcd_image_t tcd_image;
+    opj_tcd_tile_t tcd_tile;
+    opj_tcd_tilecomp_t tilec;
+    opj_image_t image;
+    opj_image_comp_t image_comp;
+    opj_thread_pool_t* tp;
+    OPJ_INT32 i, j, k;
+    OPJ_BOOL display = OPJ_FALSE;
+    OPJ_BOOL check = OPJ_FALSE;
+    OPJ_INT32 size = 16384 - 1;
+    OPJ_FLOAT64 start, stop;
+    OPJ_FLOAT64 start_wc, stop_wc;
+    OPJ_UINT32 offset_x = ((OPJ_UINT32)size + 1) / 2 - 1;
+    OPJ_UINT32 offset_y = ((OPJ_UINT32)size + 1) / 2 - 1;
+    OPJ_UINT32 num_resolutions = 6;
+    OPJ_BOOL bench_decode = OPJ_TRUE;
+    OPJ_BOOL irreversible = OPJ_FALSE;
+
+    for (i = 1; i < argc; i++) {
+        if (strcmp(argv[i], "-encode") == 0) {
+            bench_decode = OPJ_FALSE;
+        } else if (strcmp(argv[i], "-decode") == 0) {
+            bench_decode = OPJ_TRUE;
+        } else if (strcmp(argv[i], "-display") == 0) {
+            display = OPJ_TRUE;
+        } else if (strcmp(argv[i], "-check") == 0) {
+            check = OPJ_TRUE;
+        } else if (strcmp(argv[i], "-I") == 0) {
+            irreversible = OPJ_TRUE;
+        } else if (strcmp(argv[i], "-size") == 0 && i + 1 < argc) {
+            size = atoi(argv[i + 1]);
+            i ++;
+        } else if (strcmp(argv[i], "-num_threads") == 0 && i + 1 < argc) {
+            num_threads = atoi(argv[i + 1]);
+            i ++;
+        } else if (strcmp(argv[i], "-num_resolutions") == 0 && i + 1 < argc) {
+            num_resolutions = (OPJ_UINT32)atoi(argv[i + 1]);
+            if (num_resolutions == 0 || num_resolutions > 32) {
+                fprintf(stderr,
+                        "Invalid value for num_resolutions. Should be >= 1 and <= 32\n");
+                exit(1);
+            }
+            i ++;
+        } else if (strcmp(argv[i], "-offset") == 0 && i + 2 < argc) {
+            offset_x = (OPJ_UINT32)atoi(argv[i + 1]);
+            offset_y = (OPJ_UINT32)atoi(argv[i + 2]);
+            i += 2;
+        } else {
+            usage();
+        }
+    }
+
+    if (irreversible && check) {
+        /* Due to irreversible inverse DWT not being symmetric of forward */
+        /* See BUG_WEIRD_TWO_INVK in dwt.c */
+        printf("-I and -check aren't compatible\n");
+        exit(1);
+    }
+
+    tp = opj_thread_pool_create(num_threads);
+
+    init_tilec(&tilec, (OPJ_INT32)offset_x, (OPJ_INT32)offset_y,
+               (OPJ_INT32)offset_x + size, (OPJ_INT32)offset_y + size,
+               num_resolutions, irreversible);
+
+    if (display) {
+        printf("Before\n");
+        k = 0;
+        for (j = 0; j < tilec.y1 - tilec.y0; j++) {
+            for (i = 0; i < tilec.x1 - tilec.x0; i++) {
+                if (irreversible) {
+                    printf("%f ", ((OPJ_FLOAT32*)tilec.data)[k]);
+                } else {
+                    printf("%d ", tilec.data[k]);
+                }
+                k ++;
+            }
+            printf("\n");
+        }
+    }
+
+    memset(&tcd, 0, sizeof(tcd));
+    tcd.thread_pool = tp;
+    tcd.whole_tile_decoding = OPJ_TRUE;
+    tcd.win_x0 = (OPJ_UINT32)tilec.x0;
+    tcd.win_y0 = (OPJ_UINT32)tilec.y0;
+    tcd.win_x1 = (OPJ_UINT32)tilec.x1;
+    tcd.win_y1 = (OPJ_UINT32)tilec.y1;
+    tcd.tcd_image = &tcd_image;
+    memset(&tcd_image, 0, sizeof(tcd_image));
+    tcd_image.tiles = &tcd_tile;
+    memset(&tcd_tile, 0, sizeof(tcd_tile));
+    tcd_tile.x0 = tilec.x0;
+    tcd_tile.y0 = tilec.y0;
+    tcd_tile.x1 = tilec.x1;
+    tcd_tile.y1 = tilec.y1;
+    tcd_tile.numcomps = 1;
+    tcd_tile.comps = &tilec;
+    tcd.image = &image;
+    memset(&image, 0, sizeof(image));
+    image.numcomps = 1;
+    image.comps = &image_comp;
+    memset(&image_comp, 0, sizeof(image_comp));
+    image_comp.dx = 1;
+    image_comp.dy = 1;
+
+    start = opj_clock();
+    start_wc = opj_wallclock();
+    if (bench_decode) {
+        if (irreversible)  {
+            opj_dwt_decode_real(&tcd, &tilec, tilec.numresolutions);
+        } else {
+            opj_dwt_decode(&tcd, &tilec, tilec.numresolutions);
+        }
+    } else {
+        if (irreversible)  {
+            opj_dwt_encode_real(&tcd, &tilec);
+        } else {
+            opj_dwt_encode(&tcd, &tilec);
+        }
+    }
+    stop = opj_clock();
+    stop_wc = opj_wallclock();
+    printf("time for %s: total = %.03f s, wallclock = %.03f s\n",
+           bench_decode ? "dwt_decode" : "dwt_encode",
+           stop - start,
+           stop_wc - start_wc);
+
+    if (display) {
+        if (bench_decode) {
+            printf("After IDWT\n");
+        } else {
+            printf("After FDWT\n");
+        }
+        k = 0;
+        for (j = 0; j < tilec.y1 - tilec.y0; j++) {
+            for (i = 0; i < tilec.x1 - tilec.x0; i++) {
+                if (irreversible) {
+                    printf("%f ", ((OPJ_FLOAT32*)tilec.data)[k]);
+                } else {
+                    printf("%d ", tilec.data[k]);
+                }
+                k ++;
+            }
+            printf("\n");
+        }
+    }
+
+    if ((display || check) && !irreversible) {
+
+        if (bench_decode) {
+            opj_dwt_encode(&tcd, &tilec);
+        } else {
+            opj_dwt_decode(&tcd, &tilec, tilec.numresolutions);
+        }
+
+
+        if (display && !irreversible) {
+            if (bench_decode) {
+                printf("After FDWT\n");
+            } else {
+                printf("After IDWT\n");
+            }
+            k = 0;
+            for (j = 0; j < tilec.y1 - tilec.y0; j++) {
+                for (i = 0; i < tilec.x1 - tilec.x0; i++) {
+                    if (irreversible) {
+                        printf("%f ", ((OPJ_FLOAT32*)tilec.data)[k]);
+                    } else {
+                        printf("%d ", tilec.data[k]);
+                    }
+                    k ++;
+                }
+                printf("\n");
+            }
+        }
+
+    }
+
+    if (check) {
+
+        size_t idx;
+        size_t nValues = (size_t)(tilec.x1 - tilec.x0) *
+                         (size_t)(tilec.y1 - tilec.y0);
+        for (idx = 0; idx < nValues; idx++) {
+            if (tilec.data[idx] != getValue((OPJ_UINT32)idx)) {
+                printf("Difference found at idx = %u\n", (OPJ_UINT32)idx);
+                exit(1);
+            }
+        }
+    }
+
+    free_tilec(&tilec);
+
+    opj_thread_pool_destroy(tp);
+    return 0;
+}