Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/harfbuzz/src/hb-subset-repacker.cc @ 32:72c1b70d4f5c

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author Franz Glasner <fzglas.hg@dom66.de>
date Sun, 21 Sep 2025 15:10:12 +0200
parents b50eed0cc0ef
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b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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1 /*
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2 * Copyright © 2022 Google, Inc.
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3 *
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4 * This is part of HarfBuzz, a text shaping library.
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5 *
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6 * Permission is hereby granted, without written agreement and without
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7 * license or royalty fees, to use, copy, modify, and distribute this
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8 * software and its documentation for any purpose, provided that the
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9 * above copyright notice and the following two paragraphs appear in
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10 * all copies of this software.
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11 *
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12 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
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13 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
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14 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
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15 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
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16 * DAMAGE.
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17 *
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18 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
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19 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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20 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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21 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
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22 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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23 *
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24 */
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25 #include "hb-repacker.hh"
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26
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27 #ifdef HB_EXPERIMENTAL_API
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28
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29 /**
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30 * hb_subset_repack_or_fail:
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31 * @table_tag: tag of the table being packed, needed to allow table specific optimizations.
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32 * @hb_objects: raw array of struct hb_object_t, which provides
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33 * object graph info
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34 * @num_hb_objs: number of hb_object_t in the hb_objects array.
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35 *
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36 * Given the input object graph info, repack a table to eliminate
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37 * offset overflows. A nullptr is returned if the repacking attempt fails.
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38 * Table specific optimizations (eg. extension promotion in GSUB/GPOS) may be performed.
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39 * Passing HB_TAG_NONE will disable table specific optimizations.
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40 *
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41 * Since: EXPERIMENTAL
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42 **/
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43 hb_blob_t* hb_subset_repack_or_fail (hb_tag_t table_tag,
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44 hb_object_t* hb_objects,
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45 unsigned num_hb_objs)
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46 {
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47 hb_vector_t<const hb_object_t *> packed;
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48 packed.alloc (num_hb_objs + 1);
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49 packed.push (nullptr);
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50 for (unsigned i = 0 ; i < num_hb_objs ; i++)
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51 packed.push (&(hb_objects[i]));
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52
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53 return hb_resolve_overflows (packed,
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54 table_tag,
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55 20,
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56 true);
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57 }
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58 #endif