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