1/*
2 * Copyright © 2018 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 * Google Author(s): Garret Rieger, Roderick Sheeter
25 */
26
27#ifndef HB_SUBSET_INPUT_HH
28#define HB_SUBSET_INPUT_HH
29
30
31#include "hb.hh"
32
33#include "hb-subset.h"
34#include "hb-map.hh"
35#include "hb-set.hh"
36#include "hb-cplusplus.hh"
37#include "hb-font.hh"
38#include "hb-subset-instancer-solver.hh"
39
40struct hb_ot_name_record_ids_t
41{
42 hb_ot_name_record_ids_t () = default;
43 hb_ot_name_record_ids_t (unsigned platform_id_,
44 unsigned encoding_id_,
45 unsigned language_id_,
46 unsigned name_id_)
47 :platform_id (platform_id_),
48 encoding_id (encoding_id_),
49 language_id (language_id_),
50 name_id (name_id_) {}
51
52 bool operator != (const hb_ot_name_record_ids_t o) const
53 { return !(*this == o); }
54
55 inline bool operator == (const hb_ot_name_record_ids_t& o) const
56 {
57 return platform_id == o.platform_id &&
58 encoding_id == o.encoding_id &&
59 language_id == o.language_id &&
60 name_id == o.name_id;
61 }
62
63 inline uint32_t hash () const
64 {
65 uint32_t current = 0;
66 current = current * 31 + hb_hash (platform_id);
67 current = current * 31 + hb_hash (encoding_id);
68 current = current * 31 + hb_hash (language_id);
69 current = current * 31 + hb_hash (name_id);
70 return current;
71 }
72
73 unsigned platform_id;
74 unsigned encoding_id;
75 unsigned language_id;
76 unsigned name_id;
77};
78
79typedef struct hb_ot_name_record_ids_t hb_ot_name_record_ids_t;
80
81
82HB_MARK_AS_FLAG_T (hb_subset_flags_t);
83
84struct hb_subset_input_t
85{
86 HB_INTERNAL hb_subset_input_t ();
87
88 ~hb_subset_input_t ()
89 {
90 sets.~sets_t ();
91
92#ifdef HB_EXPERIMENTAL_API
93 for (auto _ : name_table_overrides.values ())
94 _.fini ();
95#endif
96 }
97
98 hb_object_header_t header;
99
100 struct sets_t {
101 hb::shared_ptr<hb_set_t> glyphs;
102 hb::shared_ptr<hb_set_t> unicodes;
103 hb::shared_ptr<hb_set_t> no_subset_tables;
104 hb::shared_ptr<hb_set_t> drop_tables;
105 hb::shared_ptr<hb_set_t> name_ids;
106 hb::shared_ptr<hb_set_t> name_languages;
107 hb::shared_ptr<hb_set_t> layout_features;
108 hb::shared_ptr<hb_set_t> layout_scripts;
109 };
110
111 union {
112 sets_t sets;
113 hb::shared_ptr<hb_set_t> set_ptrs[sizeof (sets_t) / sizeof (hb_set_t*)];
114 };
115
116 unsigned flags;
117 bool attach_accelerator_data = false;
118
119 // If set loca format will always be the long version.
120 bool force_long_loca = false;
121
122 hb_hashmap_t<hb_tag_t, Triple> axes_location;
123 hb_map_t glyph_map;
124#ifdef HB_EXPERIMENTAL_API
125 hb_hashmap_t<hb_ot_name_record_ids_t, hb_bytes_t> name_table_overrides;
126#endif
127
128 inline unsigned num_sets () const
129 {
130 return sizeof (set_ptrs) / sizeof (hb_set_t*);
131 }
132
133 inline hb_array_t<hb::shared_ptr<hb_set_t>> sets_iter ()
134 {
135 return hb_array (set_ptrs);
136 }
137
138 bool in_error () const
139 {
140 for (unsigned i = 0; i < num_sets (); i++)
141 {
142 if (unlikely (set_ptrs[i]->in_error ()))
143 return true;
144 }
145
146 return axes_location.in_error ()
147#ifdef HB_EXPERIMENTAL_API
148 || name_table_overrides.in_error ()
149#endif
150 ;
151 }
152};
153
154
155#endif /* HB_SUBSET_INPUT_HH */
156