hb-subset-serialize.h (2639B)
1 /* 2 * Copyright © 2022 Google, Inc. 3 * 4 * This is part of HarfBuzz, a text shaping library. 5 * 6 * Permission is hereby granted, without written agreement and without 7 * license or royalty fees, to use, copy, modify, and distribute this 8 * software and its documentation for any purpose, provided that the 9 * above copyright notice and the following two paragraphs appear in 10 * all copies of this software. 11 * 12 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR 13 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES 14 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN 15 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH 16 * DAMAGE. 17 * 18 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, 19 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND 20 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS 21 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO 22 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. 23 * 24 */ 25 26 #ifndef HB_SUBSET_SERIALIZE_H 27 #define HB_SUBSET_SERIALIZE_H 28 29 #include "hb.h" 30 31 HB_BEGIN_DECLS 32 33 /** 34 * hb_subset_serialize_link_t: 35 * @width: offsetSize in bytes 36 * @position: position of the offset field in bytes from 37 * beginning of subtable 38 * @objidx: index of subtable 39 * 40 * Represents a link between two objects in the object graph 41 * to be serialized. 42 * 43 * Since: 10.2.0 44 */ 45 typedef struct hb_subset_serialize_link_t { 46 unsigned int width; 47 unsigned int position; 48 unsigned int objidx; 49 } hb_subset_serialize_link_t; 50 51 /** 52 * hb_subset_serialize_object_t: 53 * @head: start of object data 54 * @tail: end of object data 55 * @num_real_links: number of offset field in the object 56 * @real_links: array of offset info 57 * @num_virtual_links: number of objects that must be packed 58 * after current object in the final 59 * serialized order 60 * @virtual_links: array of virtual link info 61 * 62 * Represents an object in the object graph to be serialized. 63 * 64 * Since: 10.2.0 65 */ 66 typedef struct hb_subset_serialize_object_t { 67 char *head; 68 char *tail; 69 unsigned int num_real_links; 70 hb_subset_serialize_link_t *real_links; 71 unsigned int num_virtual_links; 72 hb_subset_serialize_link_t *virtual_links; 73 } hb_subset_serialize_object_t; 74 75 HB_EXTERN hb_blob_t * 76 hb_subset_serialize_or_fail (hb_tag_t table_tag, 77 hb_subset_serialize_object_t *hb_objects, 78 unsigned num_hb_objs); 79 80 81 HB_END_DECLS 82 83 #endif /* HB_SUBSET_SERIALIZE_H */