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#include "hb-ot-name-language-static.hh"
41
42uint64_t const _hb_NullPool[(HB_NULL_POOL_SIZE + sizeof (uint64_t) - 1) / sizeof (uint64_t)] = {};
43/*thread_local*/ uint64_t _hb_CrapPool[(HB_NULL_POOL_SIZE + sizeof (uint64_t) - 1) / sizeof (uint64_t)] = {};
44
45DEFINE_NULL_NAMESPACE_BYTES (OT, Index) = {0xFF,0xFF};
46DEFINE_NULL_NAMESPACE_BYTES (OT, LangSys) = {0x00,0x00, 0xFF,0xFF, 0x00,0x00};
47DEFINE_NULL_NAMESPACE_BYTES (OT, RangeRecord) = {0x00,0x01, 0x00,0x00, 0x00, 0x00};
48DEFINE_NULL_NAMESPACE_BYTES (OT, CmapSubtableLongGroup) = {0x00,0x00,0x00,0x01, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00};
49DEFINE_NULL_NAMESPACE_BYTES (AAT, SettingName) = {0xFF,0xFF, 0xFF,0xFF};
50/* Hand-coded because Lookup is a template. Sad. */
51const unsigned char _hb_Null_AAT_Lookup[2] = {0xFF, 0xFF};
52
53
54unsigned int
55hb_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
68unsigned int
69hb_face_t::load_upem () const
70{
71 unsigned int ret = table.head->get_upem ();
72 upem.set_relaxed (ret);
73 return ret;
74}
75
76#endif
77