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annotate nuklear_ui/font_android.c @ 1843:13abdc98379e mame_interp

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Get Android build target working on mame_interp branch
author Michael Pavone <pavone@retrodev.com>
date Thu, 18 Apr 2019 22:06:47 -0700
parents 78abbabfd58d
children
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1 #include <stdio.h>
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2 #include <stdlib.h>
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3 #include <stdint.h>
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4 #include <limits.h>
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5 #include <string.h>
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6 #include "../util.h"
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7 #include "../paths.h"
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8 #include "sfnt.h"
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9
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10 typedef enum {
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11 STATE_DEFAULT,
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12 STATE_DECL,
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13 STATE_COMMENT,
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14 STATE_TAG,
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15 STATE_PRE_ATTRIB,
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16 STATE_ATTRIB,
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17 STATE_PRE_VALUE,
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18 STATE_VALUE
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19 } parse_state;
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20
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21 #define DEFAULT_WEIGHT 400
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22
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23 char *default_font_path(void)
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24 {
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25 //Would probably be better to call into Java for this, but this should do for now
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26 FILE *f = fopen("/system/etc/fonts.xml", "rb");
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27 if (!f) {
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28 return NULL;
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29 }
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30 long size = file_size(f);
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31 char *font_xml = malloc(size+1);
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32 if (size != fread(font_xml, 1, size, f)) {
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33 free(font_xml);
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34 fclose(f);
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35 return NULL;
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36 }
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37 fclose(f);
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38 font_xml[size] = 0;
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39
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40 char *last_tag = NULL, *last_attrib = NULL, *last_value = NULL;
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41 uint8_t last_style_was_normal = 0;
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42 char *capture_best = NULL;
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43 char *best = NULL;
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44 int best_weight_diff = INT_MAX;
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45 int last_weight = INT_MAX;
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46 parse_state state = STATE_DEFAULT;
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47 for(char *cur = font_xml; *cur; ++cur) {
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48 switch (state)
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49 {
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50 case STATE_DEFAULT:
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51 if (*cur == '<' && cur[1]) {
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52 cur++;
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53 switch(*cur)
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54 {
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55 case '?':
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56 state = STATE_DECL;
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57 break;
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58 case '!':
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59 if (cur[1] == '-' && cur[2] == '-') {
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60 state = STATE_COMMENT;
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61 cur++;
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62 } else {
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63 debug_message("Invalid comment\n");
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64 cur = font_xml + size - 1;
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65 }
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66 break;
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67 default:
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68 if (capture_best) {
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69 cur[-1] = 0;
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70 best = strip_ws(capture_best);
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71 capture_best = NULL;
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72 best_weight_diff = abs(last_weight - DEFAULT_WEIGHT);
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73 debug_message("Found candidate %s with weight %d\n", best, last_weight);
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74 }
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75 state = STATE_TAG;
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76 last_tag = cur;
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77 last_attrib = NULL;
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78 last_value = NULL;
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79 last_weight = INT_MAX;
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80 break;
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81 }
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82 }
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83 break;
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84 case STATE_DECL:
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85 if (*cur == '?' && cur[1] == '>') {
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86 cur++;
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87 state = STATE_DEFAULT;
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88 }
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89 break;
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90 case STATE_COMMENT:
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91 if (*cur == '-' && cur[1] == '-' && cur[2] == '>') {
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92 cur += 2;
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93 state = STATE_DEFAULT;
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94 }
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95 break;
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96 case STATE_TAG:
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97 if (*cur == ' ' || *cur == '\t' || *cur == '\n' || *cur == '\r') {
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98 *cur = 0;
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99 state = STATE_PRE_ATTRIB;
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100 } else if (*cur == '>') {
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101 *cur = 0;
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102 state = STATE_DEFAULT;
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103 }
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104 break;
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105 case STATE_PRE_ATTRIB:
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106 if (!(*cur == ' ' || *cur == '\t' || *cur == '\n' || *cur == '\r')) {
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107 if (*cur == '>') {
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108 state = STATE_DEFAULT;
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109 if (last_style_was_normal && abs(last_weight - DEFAULT_WEIGHT) < best_weight_diff) {
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110 capture_best = cur + 1;
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111 } else if (best && !strcmp("/family", last_tag)) {
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112 debug_message("found family close tag, stopping search\n");
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113 cur = font_xml + size - 1;
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114 }
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115 } else {
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116 last_attrib = cur;
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117 state = STATE_ATTRIB;
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118 }
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119 }
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120 break;
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
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121 case STATE_ATTRIB:
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
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parents:
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122 if (*cur == '=') {
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123 *cur = 0;
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124 state = STATE_PRE_VALUE;
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125 } else if (*cur == ' ' || *cur == '\t' || *cur == '\n' || *cur == '\r') {
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126 *cur = 0;
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127 }
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128 break;
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129 case STATE_PRE_VALUE:
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130 if (*cur == '"') {
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131 state = STATE_VALUE;
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132 last_value = cur + 1;
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133 }
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134 break;
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135 case STATE_VALUE:
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136 if (*cur == '"') {
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137 *cur = 0;
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138 state = STATE_PRE_ATTRIB;
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diff changeset
139 if (!strcmp("weight", last_attrib)) {
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140 last_weight = atoi(last_value);
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diff changeset
141 } else if (!strcmp("style", last_attrib)) {
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diff changeset
142 last_style_was_normal = !strcmp("normal", last_value);
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143 }
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
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diff changeset
144 }
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
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diff changeset
145 break;
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diff changeset
146 }
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
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147 }
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
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diff changeset
148 if (best) {
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149 best = path_append("/system/fonts", best);
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150 }
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
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diff changeset
151 free(font_xml);
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
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diff changeset
152 return best;
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
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diff changeset
153 }
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
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diff changeset
154
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
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diff changeset
155 static uint8_t *try_load_font(char *path, uint32_t *size_out)
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
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diff changeset
156 {
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
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diff changeset
157 debug_message("Trying to load font %s\n", path);
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
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diff changeset
158 FILE *f = fopen(path, "rb");
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
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diff changeset
159 free(path);
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
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diff changeset
160 if (!f) {
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
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diff changeset
161 return NULL;
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
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parents:
diff changeset
162 }
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
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diff changeset
163 long size = file_size(f);
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
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diff changeset
164 uint8_t *buffer = malloc(size);
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
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diff changeset
165 if (size != fread(buffer, 1, size, f)) {
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
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diff changeset
166 fclose(f);
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
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diff changeset
167 return NULL;
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
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diff changeset
168 }
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
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diff changeset
169 fclose(f);
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
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diff changeset
170 sfnt_container *sfnt = load_sfnt(buffer, size);
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
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diff changeset
171 if (!sfnt) {
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
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parents:
diff changeset
172 free(buffer);
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
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diff changeset
173 return NULL;
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
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diff changeset
174 }
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
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diff changeset
175 return sfnt_flatten(sfnt->tables, size_out);
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diff changeset
176 }
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
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parents:
diff changeset
177
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
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diff changeset
178 uint8_t *default_font(uint32_t *size_out)
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
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diff changeset
179 {
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
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parents:
diff changeset
180 char *path = default_font_path();
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
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parents:
diff changeset
181 if (!path) {
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
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parents:
diff changeset
182 goto error;
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
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parents:
diff changeset
183 }
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
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parents:
diff changeset
184 uint8_t *ret = try_load_font(path, size_out);
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
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parents:
diff changeset
185 if (ret) {
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
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parents:
diff changeset
186 return ret;
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
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parents:
diff changeset
187 }
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
188 error:
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
189 //try some likely suspects if we failed to parse fonts.xml or failed to find the indicated font
1843
13abdc98379e Get Android build target working on mame_interp branch
Michael Pavone <pavone@retrodev.com>
parents: 1839
diff changeset
190 ret = try_load_font(strdup("/system/fonts/Roboto-Regular.ttf"), size_out);
1839
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
191 if (!ret) {
1843
13abdc98379e Get Android build target working on mame_interp branch
Michael Pavone <pavone@retrodev.com>
parents: 1839
diff changeset
192 ret = try_load_font(strdup("/system/fonts/DroidSans.ttf"), size_out);
1839
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
193 }
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
194 return ret;
78abbabfd58d Get Android build working again and update for SDL 2.0.7 (last version to support older versions of Android)
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
195 }