--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/openjpeg/src/lib/openjp2/thix_manager.c	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,146 @@
+/*
+ * $Id: thix_manager.c 897 2011-08-28 21:43:57Z Kaori.Hagihara@gmail.com $
+ *
+ * Copyright (c) 2002-2014, Universite catholique de Louvain (UCL), Belgium
+ * Copyright (c) 2002-2014, Professor Benoit Macq
+ * Copyright (c) 2003-2004, Yannick Verschueren
+ * Copyright (c) 2010-2011, Kaori Hagihara
+ * 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.
+ */
+
+/*! \file
+ *  \brief Modification of jpip.c from 2KAN indexer
+ */
+
+#include "opj_includes.h"
+
+
+
+int opj_write_thix(int coff, opj_codestream_info_t cstr_info,
+                   opj_stream_private_t *cio,
+                   opj_event_mgr_t * p_manager)
+{
+    OPJ_BYTE l_data_header [4];
+    int i;
+    int tileno;
+    opj_jp2_box_t *box;
+    OPJ_UINT32 len;
+    OPJ_OFF_T lenp;
+
+    lenp = 0;
+    box = (opj_jp2_box_t *)opj_calloc((size_t)(cstr_info.tw * cstr_info.th),
+                                      sizeof(opj_jp2_box_t));
+    if (box == NULL) {
+        return 0;
+    }
+    for (i = 0; i < 2 ; i++) {
+        if (i) {
+            opj_stream_seek(cio, lenp, p_manager);
+        }
+
+        lenp = opj_stream_tell(cio);
+        opj_stream_skip(cio, 4, p_manager);             /* L [at the end] */
+        opj_write_bytes(l_data_header, JPIP_THIX, 4); /* THIX */
+        opj_stream_write_data(cio, l_data_header, 4, p_manager);
+
+        opj_write_manf(i, cstr_info.tw * cstr_info.th, box, cio, p_manager);
+
+        for (tileno = 0; tileno < cstr_info.tw * cstr_info.th; tileno++) {
+            box[tileno].length = (OPJ_UINT32)opj_write_tilemhix(coff, cstr_info, tileno,
+                                 cio, p_manager);
+            box[tileno].type = JPIP_MHIX;
+        }
+
+        len = (OPJ_UINT32)(opj_stream_tell(cio) - lenp);
+        opj_stream_seek(cio, lenp, p_manager);
+        opj_write_bytes(l_data_header, len, 4); /* L              */
+        opj_stream_write_data(cio, l_data_header, 4, p_manager);
+        opj_stream_seek(cio, lenp + len, p_manager);
+
+    }
+
+    opj_free(box);
+
+    return (int)len;
+}
+
+/*
+ * Write tile-part headers mhix box
+ *
+ * @param[in] coff      offset of j2k codestream
+ * @param[in] cstr_info codestream information
+ * @param[in] tileno    tile number
+ * @param[in] cio       file output handle
+ * @return              length of mhix box
+ */
+int opj_write_tilemhix(int coff, opj_codestream_info_t cstr_info, int tileno,
+                       opj_stream_private_t *cio,
+                       opj_event_mgr_t * p_manager)
+{
+    OPJ_BYTE l_data_header [8];
+    int i;
+    opj_tile_info_t tile;
+    opj_tp_info_t tp;
+    opj_marker_info_t *marker;
+    OPJ_UINT32 len;
+    OPJ_OFF_T lenp;
+
+    lenp = opj_stream_tell(cio);
+    opj_stream_skip(cio, 4,
+                    p_manager);               /* L [at the end]                    */
+    opj_write_bytes(l_data_header, JPIP_MHIX,
+                    4);     /* MHIX                              */
+    opj_stream_write_data(cio, l_data_header, 4, p_manager);
+
+    tile = cstr_info.tile[tileno];
+    tp = tile.tp[0];
+
+    opj_write_bytes(l_data_header,
+                    (OPJ_UINT32)(tp.tp_end_header - tp.tp_start_pos + 1),
+                    8);        /* TLEN                              */
+    opj_stream_write_data(cio, l_data_header, 8, p_manager);
+
+    marker = cstr_info.tile[tileno].marker;
+
+    for (i = 0; i < cstr_info.tile[tileno].marknum;
+            i++) {        /* Marker restricted to 1 apparition */
+        opj_write_bytes(l_data_header, marker[i].type, 2);
+        opj_write_bytes(l_data_header + 2, 0, 2);
+        opj_stream_write_data(cio, l_data_header, 4, p_manager);
+        opj_write_bytes(l_data_header, (OPJ_UINT32)(marker[i].pos - coff), 8);
+        opj_stream_write_data(cio, l_data_header, 8, p_manager);
+        opj_write_bytes(l_data_header, (OPJ_UINT32)marker[i].len, 2);
+        opj_stream_write_data(cio, l_data_header, 2, p_manager);
+    }
+
+    /*  free( marker);*/
+
+    len = (OPJ_UINT32)(opj_stream_tell(cio) - lenp);
+    opj_stream_seek(cio, lenp, p_manager);
+    opj_write_bytes(l_data_header, len, 4); /* L  */
+    opj_stream_write_data(cio, l_data_header, 4, p_manager);
+    opj_stream_seek(cio, lenp + len, p_manager);
+
+    return (int)len;
+}