| /* |
| * Copyright © 2022 Google, Inc. |
| * |
| * This is part of HarfBuzz, a text shaping library. |
| * |
| * Permission is hereby granted, without written agreement and without |
| * license or royalty fees, to use, copy, modify, and distribute this |
| * software and its documentation for any purpose, provided that the |
| * above copyright notice and the following two paragraphs appear in |
| * all copies of this software. |
| * |
| * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR |
| * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES |
| * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN |
| * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH |
| * DAMAGE. |
| * |
| * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, |
| * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND |
| * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS |
| * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO |
| * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. |
| * |
| */ |
| #include "hb-repacker.hh" |
| |
| #ifdef HB_EXPERIMENTAL_API |
| |
| /** |
| * hb_subset_repack_or_fail: |
| * @table_tag: tag of the table being packed, needed to allow table specific optimizations. |
| * @hb_objects: raw array of struct hb_object_t, which provides |
| * object graph info |
| * @num_hb_objs: number of hb_object_t in the hb_objects array. |
| * |
| * Given the input object graph info, repack a table to eliminate |
| * offset overflows. A nullptr is returned if the repacking attempt fails. |
| * Table specific optimizations (eg. extension promotion in GSUB/GPOS) may be performed. |
| * Passing HB_TAG_NONE will disable table specific optimizations. |
| * |
| * XSince: EXPERIMENTAL |
| **/ |
| hb_blob_t* hb_subset_repack_or_fail (hb_tag_t table_tag, |
| hb_object_t* hb_objects, |
| unsigned num_hb_objs) |
| { |
| hb_vector_t<const hb_object_t *> packed; |
| packed.alloc (num_hb_objs + 1); |
| packed.push (nullptr); |
| for (unsigned i = 0 ; i < num_hb_objs ; i++) |
| packed.push (&(hb_objects[i])); |
| |
| return hb_resolve_overflows (packed, |
| table_tag, |
| 20, |
| true); |
| } |
| #endif |
