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annotate nuklear_ui/sfnt.c @ 1812:8aeac7bd9fa7 v0.6.2

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Update version number, special thanks, CHANGELOG and README in preparation for possible 0.6.2 release
author Michael Pavone <pavone@retrodev.com>
date Wed, 27 Mar 2019 23:34:53 -0700
parents 098c11aaf8f0
children 369a52e302e2
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1527
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1 #include <stddef.h>
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2 #include <string.h>
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3 #include <stdlib.h>
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4 #include "sfnt.h"
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5 #include "../util.h"
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6
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7 static uint32_t big32(uint8_t *src)
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8 {
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9 uint32_t ret = *(src++) << 24;
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10 ret |= *(src++) << 16;
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11 ret |= *(src++) << 8;
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12 ret |= *src;
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13 return ret;
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14 }
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15
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16 static uint32_t big16(uint8_t *src)
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17 {
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18 uint32_t ret = *(src++) << 8;
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19 ret |= *src;
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20 return ret;
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21 }
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22
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23 #define MIN_RESOURCE_MAP_SIZE (16 + 12 + 2 + 8)
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24
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25 sfnt_container *load_sfnt(uint8_t *buffer, uint32_t size)
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26 {
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27 if (size < 0x100) {
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28 return NULL;
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29 }
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30 uint32_t sfnt_res_count, sfnt_res_offset, res_offset;
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31 uint8_t type;
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32 if (!memcmp(buffer, "true", 4) || !memcmp(buffer, "OTTO", 4) || !memcmp(buffer, "typ1", 4) || !memcmp(buffer, "\0\x01\0\0", 4)) {
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33 type = CONTAINER_TTF;
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34 } else if (!memcmp(buffer, "ttcf", 4)) {
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35 type = CONTAINER_TTC;
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36 } else {
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37 static uint8_t all_zeroes[16];
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38 uint32_t resource_map_off = big32(buffer + 4);
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39 if (resource_map_off + MIN_RESOURCE_MAP_SIZE > size) {
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40 return NULL;
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41 }
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42 //first 16 bytes of map should match header or be all zeroes
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43 if (memcmp(buffer, buffer + resource_map_off, 16) && memcmp(all_zeroes, buffer + resource_map_off, 16)) {
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44 return NULL;
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45 }
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46 uint32_t type_start_off = resource_map_off + big16(buffer + resource_map_off + 24);
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47 if (type_start_off + sizeof(uint16_t) > size) {
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48 return NULL;
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49 }
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50 uint32_t num_types = 1 + big16(buffer + type_start_off);
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51 if (type_start_off + sizeof(uint16_t) + 8 * num_types > size) {
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52 return NULL;
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53 }
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54 res_offset = big32(buffer);
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55 if (res_offset > size) {
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56 return NULL;
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57 }
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58 uint8_t *cur = buffer + type_start_off + 2;
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59 sfnt_res_count = 0;
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60 for (uint32_t i = 0; i < num_types; i++, cur += 8)
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61 {
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62 if (!memcmp("sfnt", cur, 4)) {
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63 sfnt_res_count = 1 + big16(cur + 4);
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64 sfnt_res_offset = type_start_off + big16(cur + 6);
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65 if (sfnt_res_offset + sfnt_res_count * 12 > size) {
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66 return NULL;
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67 }
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68 type = CONTAINER_DFONT;
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69 break;
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70 }
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71 }
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72 if (!sfnt_res_count) {
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73 //No "sfnt" resources in this dfont
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74 return NULL;
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75 }
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76 }
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77 sfnt_container *sfnt = calloc(1, sizeof(sfnt_container));
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78 sfnt->blob = buffer;
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79 sfnt->size = size;
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80 sfnt->container_type = type;
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81 switch (type)
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82 {
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83 case CONTAINER_TTF:
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84 sfnt->num_fonts = 1;
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85 sfnt->tables = calloc(1, sizeof(sfnt_table));
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86 sfnt->tables->container = sfnt;
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87 sfnt->tables->data = buffer + 0xC;
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88 sfnt->tables->num_entries = big16(buffer + 4);
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89 sfnt->tables->offset = 0;
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90 break;
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91 case CONTAINER_TTC: {
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92 sfnt->num_fonts = big32(buffer+8);
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93 sfnt->tables = calloc(sfnt->num_fonts, sizeof(sfnt_table));
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94 uint8_t *offsets = buffer + 0xC;
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95 for (int i = 0; i < sfnt->num_fonts; i++, offsets += sizeof(uint32_t))
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96 {
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97 uint32_t offset = big32(offsets);
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98 sfnt->tables[i].data = buffer + offset + 0xC;
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99 sfnt->tables[i].container = sfnt;
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100 sfnt->tables[i].num_entries = big16(buffer + offset + 4);
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101 sfnt->tables[i].offset = 0;
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102 }
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103 break;
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104 }
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105 case CONTAINER_DFONT:{
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106 sfnt->num_fonts = sfnt_res_count;
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107 sfnt->tables = calloc(sfnt->num_fonts, sizeof(sfnt_table));
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108 uint8_t *cur = buffer + sfnt_res_offset;
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109 for (int i = 0; i < sfnt->num_fonts; i++, cur += 12)
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110 {
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111 uint32_t offset = res_offset + (big32(cur + 4) & 0xFFFFFF);
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112 if (offset + 4 > size) {
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113 sfnt->tables[i].num_entries = 0;
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114 sfnt->tables[i].data = NULL;
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Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
115 continue;
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
116 }
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
117 uint32_t res_size = big32(buffer + offset);
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
118 if (offset + 4 + res_size > size || res_size < 0xC) {
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
119 sfnt->tables[i].num_entries = 0;
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
120 sfnt->tables[i].data = NULL;
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
121 continue;
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
122 }
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
123 sfnt->tables[i].container = sfnt;
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
124 sfnt->tables[i].data = buffer + offset + 4 + 0xC;
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
125 sfnt->tables[i].num_entries = big16(buffer + offset + 4 + 4);
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
126 sfnt->tables[i].offset = offset + 4;
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
127 }
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
128 break;
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
129 }
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
130 }
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
131 return sfnt;
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
132 }
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
133
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
134 uint8_t *sfnt_find_table(sfnt_table *sfnt, char *table, uint32_t *size_out)
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
135 {
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
136 uint8_t *entry = sfnt->data;
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
137 for (int i = 0; i < sfnt->num_entries; i++, entry += 16)
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
138 {
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
139 if (!strncmp(entry, table, 4)) {
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
140 if (size_out) {
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
141 *size_out = big32(entry + 12);
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
142 }
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
143 return sfnt->container->blob + sfnt->offset + big32(entry + 8);
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
144 }
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
145 }
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
146 return NULL;
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
147 }
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
148
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
149 char *sfnt_name(sfnt_table *sfnt, uint16_t name_type)
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
150 {
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
151 uint32_t name_size;
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
152 uint8_t *name_table = sfnt_find_table(sfnt, "name", &name_size);
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
153 if (!name_table) {
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
154 return NULL;
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
155 }
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
156 uint16_t num_names = big16(name_table + 2);
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
157 if ((6 + num_names *12) > name_size) {
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
158 //count is too big for the name table size, abort
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
159 return NULL;
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
160 }
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
161 uint8_t *entry = name_table + 6;
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
162 uint16_t name_length = 0, name_offset;
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
163 uint8_t *unicode_entry = NULL, *macroman_entry = NULL, *winunicode_entry = NULL;
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
164 for (uint16_t i = 0; i < num_names; i++, entry += 12)
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
165 {
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
166 if (big16(entry + 6) != name_type) {
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
167 continue;
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
168 }
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
169 uint16_t language_id = big16(entry + 4);
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
170 if (language_id >= 0x8000) {
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
171 //ingore language tag records
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
172 continue;
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
173 }
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
174 uint16_t platform_id = big16(entry);
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
175 if (platform_id == 0) {
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
176 //prefer Unicode first
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
177 unicode_entry = entry;
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
178 break;
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
179 } else if (platform_id == 3 && big16(entry + 2) < 2) {
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
180 if (!winunicode_entry || (language_id & 0xFF) == 0x09) {
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
181 winunicode_entry = entry;
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
182 }
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
183 } else if (platform_id == 1 && big16(entry + 2) == 0) {
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
184 if (!macroman_entry || (language_id == 0)) {
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
185 macroman_entry = entry;
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
186 }
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
187 }
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
188 }
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
189 entry = unicode_entry ? unicode_entry : winunicode_entry ? winunicode_entry : macroman_entry;
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
190 if (entry) {
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
191 name_length = big16(entry + 8);
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
192 name_offset = big16(entry + 10);
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
193 }
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
194 if (!name_length) {
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
195 return NULL;
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
196 }
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
197 uint32_t full_off = name_offset + big16(name_table + 4);
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
198 if ((full_off + name_length) > name_size) {
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
199 return NULL;
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
200 }
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
201 if (entry == macroman_entry) {
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
202 //TODO: convert these properly to UTF-8
1559
098c11aaf8f0 Fix silly bug in handling of Mac Roman font names. Make Mac font search more exhaustive if the faster prefix check fails. Added a bunch of debug printfs in case those aren't sufficient to get things working on other machines
Michael Pavone <pavone@retrodev.com>
parents: 1527
diff changeset
203 char *ret = malloc(name_length + 1);
1527
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
204 memcpy(ret, name_table + full_off, name_length);
1559
098c11aaf8f0 Fix silly bug in handling of Mac Roman font names. Make Mac font search more exhaustive if the faster prefix check fails. Added a bunch of debug printfs in case those aren't sufficient to get things working on other machines
Michael Pavone <pavone@retrodev.com>
parents: 1527
diff changeset
205 ret[name_length] = 0;
1527
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
206 return ret;
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
207 } else {
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
208 return utf16be_to_utf8(name_table + full_off, name_length/2);
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
209 }
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
210 }
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
211
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
212 uint8_t *sfnt_flatten(sfnt_table *sfnt, uint32_t *size_out)
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
213 {
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
214 uint8_t *ret = NULL;;
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
215 sfnt_container *cont = sfnt->container;
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
216 switch(cont->container_type)
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
217 {
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
218 case CONTAINER_TTF:
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
219 ret = cont->blob;
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
220 if (size_out) {
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
221 *size_out = cont->size;
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
222 }
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
223 break;
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
224 case CONTAINER_TTC:
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
225 memmove(cont->blob, sfnt->data - 0xC, 0xC + sfnt->num_entries * 12);
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
226 ret = cont->blob;
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
227 if (size_out) {
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
228 *size_out = cont->size;
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
229 }
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
230 break;
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
231 case CONTAINER_DFONT:{
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
232 uint8_t * start = sfnt->data - 0xC;
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233 uint32_t size = big32(start - 4);
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234 if (size + (start-cont->blob) > cont->size) {
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235 size = cont->size - (start-cont->blob);
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236 }
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237 ret = malloc(size);
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238 memcpy(ret, start, size);
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239 free(cont->blob);
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240 if (size_out) {
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241 *size_out = size;
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242 }
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243 break;
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244 }
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245 }
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246 free(cont->tables);
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247 free(cont);
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248 return ret;
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249 }
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250
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251 sfnt_table *sfnt_subfamily_by_names(sfnt_container *sfnt, const char **names)
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252 {
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253 for (int i = 0; i < sfnt->num_fonts; i++)
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254 {
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255 for (const char **name = names; *name; name++)
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256 {
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257 char *font_subfam = sfnt_name(sfnt->tables + i, SFNT_SUBFAMILY);
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258 if (font_subfam && !strcasecmp(*name, font_subfam)) {
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259 free(font_subfam);
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260 return sfnt->tables + i;
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261 }
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262 free(font_subfam);
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263 }
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264 }
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265 return NULL;
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266 }
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267
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268 void sfnt_free(sfnt_container *sfnt)
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269 {
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270 free(sfnt->tables);
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271 free(sfnt->blob);
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272 free(sfnt);
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273 }