1 /*
2 Copyright (C) 2016-2017 Alexander Borisov
3
4 This library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 This library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with this library; if not, write to the Free Software
16 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17
18 Author: lex.borisov@gmail.com (Alexander Borisov)
19 */
20
21 #include "myfont/os_2.h"
22
myfont_load_table_os_2(myfont_font_t * mf,uint8_t * font_data,size_t data_size)23 mystatus_t myfont_load_table_os_2(myfont_font_t* mf, uint8_t* font_data, size_t data_size)
24 {
25 memset(&mf->table_os_2, 0, sizeof(myfont_table_os_2_t));
26
27 if(mf->cache.tables_offset[MyFONT_TKEY_OS_2] == 0)
28 return MyFONT_STATUS_OK;
29
30 myfont_table_os_2_t *tos_2 = &mf->table_os_2;
31 const uint32_t table_offset = mf->cache.tables_offset[MyFONT_TKEY_OS_2];
32
33 /* get current data */
34 uint8_t *data = &font_data[table_offset];
35 uint32_t pos = table_offset + 32 + 10 + 16 + 4 + 16;
36
37 if(pos > data_size)
38 return MyFONT_STATUS_ERROR_TABLE_UNEXPECTED_ENDING;
39
40 tos_2->version = myfont_read_u16(&data);
41 tos_2->xAvgCharWidth = myfont_read_16(&data);
42 tos_2->usWeightClass = myfont_read_u16(&data);
43 tos_2->usWidthClass = myfont_read_u16(&data);
44 tos_2->fsType = myfont_read_16(&data);
45 tos_2->ySubscriptXSize = myfont_read_16(&data);
46 tos_2->ySubscriptYSize = myfont_read_16(&data);
47 tos_2->ySubscriptXOffset = myfont_read_16(&data);
48 tos_2->ySubscriptYOffset = myfont_read_16(&data);
49 tos_2->ySuperscriptXSize = myfont_read_16(&data);
50 tos_2->ySuperscriptYSize = myfont_read_16(&data);
51 tos_2->ySuperscriptXOffset = myfont_read_16(&data);
52 tos_2->ySuperscriptYOffset = myfont_read_16(&data);
53 tos_2->yStrikeoutSize = myfont_read_16(&data);
54 tos_2->yStrikeoutPosition = myfont_read_16(&data);
55 tos_2->sFamilyClass = myfont_read_16(&data);
56
57 memcpy(tos_2->panose, data, 10);
58 data += 10;
59
60 tos_2->ulUnicodeRange1 = myfont_read_u32(&data);
61 tos_2->ulUnicodeRange2 = myfont_read_u32(&data);
62 tos_2->ulUnicodeRange3 = myfont_read_u32(&data);
63 tos_2->ulUnicodeRange4 = myfont_read_u32(&data);
64
65 memcpy(tos_2->achVendID, data, 4);
66 data += 4;
67
68 tos_2->fsSelection = myfont_read_u16(&data);
69 tos_2->usFirstCharIndex = myfont_read_u16(&data);
70 tos_2->usLastCharIndex = myfont_read_u16(&data);
71 tos_2->sTypoAscender = myfont_read_16(&data);
72 tos_2->sTypoDescender = myfont_read_16(&data);
73 tos_2->sTypoLineGap = myfont_read_16(&data);
74 tos_2->usWinAscent = myfont_read_u16(&data);
75 tos_2->usWinDescent = myfont_read_u16(&data);
76
77 switch (tos_2->version) {
78 case 1:
79 pos += 8;
80 if(pos > data_size)
81 return MyFONT_STATUS_ERROR_TABLE_UNEXPECTED_ENDING;
82
83 tos_2->ulCodePageRange1 = myfont_read_u32(&data);
84 tos_2->ulCodePageRange2 = myfont_read_u32(&data);
85
86 break;
87 case 2:
88 case 3:
89 case 4:
90 pos += 18;
91 if(pos > data_size)
92 return MyFONT_STATUS_ERROR_TABLE_UNEXPECTED_ENDING;
93
94 tos_2->ulCodePageRange1 = myfont_read_u32(&data);
95 tos_2->ulCodePageRange2 = myfont_read_u32(&data);
96 tos_2->sxHeight = myfont_read_16(&data);
97 tos_2->sCapHeight = myfont_read_16(&data);
98 tos_2->usDefaultChar = myfont_read_u16(&data);
99 tos_2->usBreakChar = myfont_read_u16(&data);
100 tos_2->usMaxContext = myfont_read_u16(&data);
101
102 break;
103 case 5:
104 pos += 22;
105 if(pos > data_size)
106 return MyFONT_STATUS_ERROR_TABLE_UNEXPECTED_ENDING;
107
108 tos_2->ulCodePageRange1 = myfont_read_u32(&data);
109 tos_2->ulCodePageRange2 = myfont_read_u32(&data);
110 tos_2->sxHeight = myfont_read_16(&data);
111 tos_2->sCapHeight = myfont_read_16(&data);
112 tos_2->usDefaultChar = myfont_read_u16(&data);
113 tos_2->usBreakChar = myfont_read_u16(&data);
114 tos_2->usMaxContext = myfont_read_u16(&data);
115 tos_2->usLowerOpticalPointSize = myfont_read_u16(&data);
116 tos_2->usUpperOpticalPointSize = myfont_read_u16(&data);
117
118 break;
119 default:
120 break;
121 }
122
123 return MyFONT_STATUS_OK;
124 }
125
myfont_os_2_panose(myfont_font_t * mf,myfont_table_os_2_panose_t id)126 int8_t myfont_os_2_panose(myfont_font_t *mf, myfont_table_os_2_panose_t id)
127 {
128 return mf->table_os_2.panose[id];
129 }
130
131
132