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): Behdad Esfahbod
25 */
26
27 #include "hb.hh"
28
29 #include "hb-open-type.hh"
30 #include "hb-face.hh"
31
32 #include "hb-aat-layout-common.hh"
33 #include "hb-aat-layout-feat-table.hh"
34 #include "hb-ot-layout-common.hh"
35 #include "hb-ot-cmap-table.hh"
36 #include "hb-ot-head-table.hh"
37 #include "hb-ot-maxp-table.hh"
38
39 #ifndef HB_NO_VISIBILITY
40
41 uint64_t const _hb_NullPool[(HB_NULL_POOL_SIZE + sizeof(uint64_t) - 1) / sizeof(uint64_t)] = {};
42 /*thread_local*/ uint64_t _hb_CrapPool[(HB_NULL_POOL_SIZE + sizeof(uint64_t) - 1) / sizeof(uint64_t)] = {};
43
44 DEFINE_NULL_NAMESPACE_BYTES(OT, Index) = {0xFF, 0xFF};
45 DEFINE_NULL_NAMESPACE_BYTES(OT, LangSys) = {0x00, 0x00, 0xFF, 0xFF, 0x00, 0x00};
46 DEFINE_NULL_NAMESPACE_BYTES(OT, RangeRecord) = {0x00, 0x01, 0x00, 0x00, 0x00, 0x00};
47 DEFINE_NULL_NAMESPACE_BYTES(OT, CmapSubtableLongGroup) = {
48 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
49 DEFINE_NULL_NAMESPACE_BYTES(AAT, SettingName) = {0xFF, 0xFF, 0xFF, 0xFF};
50 /* Hand-coded because Lookup is a template. Sad. */
51 const unsigned char _hb_Null_AAT_Lookup[2] = {0xFF, 0xFF};
52
53 /* hb_face_t */
54
load_num_glyphs() const55 unsigned int hb_face_t::load_num_glyphs() const
56 {
57 hb_sanitize_context_t c = hb_sanitize_context_t();
58 c.set_num_glyphs(0); /* So we don't recurse ad infinitum. */
59 hb_blob_t *maxp_blob = c.reference_table<OT::maxp>(this);
60 const OT::maxp *maxp_table = maxp_blob->as<OT::maxp>();
61
62 unsigned int ret = maxp_table->get_num_glyphs();
63 num_glyphs.set_relaxed(ret);
64 hb_blob_destroy(maxp_blob);
65 return ret;
66 }
67
load_upem() const68 unsigned int hb_face_t::load_upem() const
69 {
70 unsigned int ret = table.head->get_upem();
71 upem.set_relaxed(ret);
72 return ret;
73 }
74
75 /* hb_user_data_array_t */
76
77 //bool hb_user_data_array_t::set(hb_user_data_key_t *key, void *data, hb_destroy_func_t destroy, hb_bool_t replace)
78 //{
79 // if (!key)
80 // return false;
81
82 // if (replace) {
83 // if (!data && !destroy) {
84 // items.remove(key, lock);
85 // return true;
86 // }
87 // }
88 // hb_user_data_item_t item = {key, data, destroy};
89 // bool ret = !!items.replace_or_insert(item, lock, (bool)replace);
90
91 // return ret;
92 //}
93
94 //void *hb_user_data_array_t::get(hb_user_data_key_t *key)
95 //{
96 // hb_user_data_item_t item = {nullptr, nullptr, nullptr};
97
98 // return items.find(key, &item, lock) ? item.data : nullptr;
99 //}
100
101 #endif
102