1 /*
2 * Copyright © 2023 Behdad Esfahbod
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 #ifndef HB_WASM_API_FACE_HH
26 #define HB_WASM_API_FACE_HH
27
28 #include "hb-wasm-api.hh"
29
30 namespace hb {
31 namespace wasm {
32
33
HB_WASM_API(ptr_t (face_t),face_create)34 HB_WASM_API (ptr_t(face_t), face_create) (HB_WASM_EXEC_ENV
35 ptr_d(blob_t, blob),
36 unsigned int index)
37 {
38 HB_PTR_PARAM (blob_t, blob);
39 hb_blob_t *hb_blob = hb_blob_create(
40 HB_ARRAY_APP2NATIVE (char, blob->data, blob->length),
41 blob->length,
42 HB_MEMORY_MODE_DUPLICATE,
43 NULL,
44 NULL);
45
46 hb_face_t *face = hb_face_create(hb_blob, index);
47
48 HB_OBJ2REF (face);
49 return faceref;
50 }
51
HB_WASM_API(bool_t,face_copy_table)52 HB_WASM_API (bool_t, face_copy_table) (HB_WASM_EXEC_ENV
53 ptr_d(face_t, face),
54 tag_t table_tag,
55 ptr_d(blob_t, blob))
56 {
57 HB_REF2OBJ (face);
58 HB_PTR_PARAM (blob_t, blob);
59 if (unlikely (!blob))
60 return false;
61
62 hb_blob_t *hb_blob = hb_face_reference_table (face, table_tag);
63
64 unsigned length;
65 const char *hb_data = hb_blob_get_data (hb_blob, &length);
66
67 if (length <= blob->length)
68 {
69 char *data = HB_ARRAY_APP2NATIVE (char, blob->data, length);
70
71 if (unlikely (!data))
72 {
73 blob->length = 0;
74 return false;
75 }
76
77 hb_memcpy (data, hb_data, length);
78
79 return true;
80 }
81
82 module_free (blob->data);
83
84 blob->length = length;
85 blob->data = wasm_runtime_module_dup_data (module_inst, hb_data, length);
86
87 hb_blob_destroy (hb_blob);
88
89 if (blob->length && !blob->data)
90 {
91 blob->length = 0;
92 return false;
93 }
94
95 return true;
96 }
97
HB_WASM_API(unsigned,face_get_upem)98 HB_WASM_API (unsigned, face_get_upem) (HB_WASM_EXEC_ENV
99 ptr_d(face_t, face))
100 {
101 HB_REF2OBJ (face);
102
103 return hb_face_get_upem (face);
104 }
105
106
107 }}
108
109 #endif /* HB_WASM_API_FACE_HH */
110