1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
|
#include "bitmap.h"
int main (int argc, char const *argv[])
{
FT_Library library;
FT_Face face;
FT_GlyphSlot slot;
FT_Bitmap* bitmap;
FT_Error error;
const char* font_file;
int size;
int render_mode; // argument
int load_flag; // FT_LOAD_XXX
int render_flag; // FT_RENDER_MODE_XXX
int target_flag; // FT_LOAD_TARGET_XXX
char* render_type; // for file_name
char name[100]; // hashes file name
int i; // for loop
if (argc != 4)
{
printf("\nTo generate MurmurHash3 hash values of all glyphs\n");
printf("Hashes will be saved in a file named\n \
$(font)_$(pt_size)_$(render_mode).hash \n\n");
printf("Default: hashes of 256-level gray bitmaps will be generated\n\n");
printf("Usage ./<exe> <font_file> <pt_size> <render_mode>\n\n");
printf("Values for render_mode 0 - monochrome\n");
printf(" 1 - anti-aliased\n");
printf(" 2 - lcd horizontal-RGB\n");
printf(" 3 - lcd vertical-RGB\n");
return 1;
}
font_file = argv[1];
size = atof(argv[2]);
render_mode = atoi(argv[3]);
error = FT_Init_FreeType( &library );
if(error){
printf("Error while initialising library\n");
}
if (render_mode > 1 )
{
error = FT_Library_SetLcdFilter( library,
FT_LCD_FILTER_DEFAULT );
if(error){
printf("Error while setting LCD filter\n");
}
}
error = FT_New_Face( library,
font_file,
0,
&face );
if(error){
printf("Error loading new face\n");
}
error = FT_Set_Char_Size( face,
size * 64,
0,
DPI,
0 );
if(error){
printf("Error setting character size\n");
}
switch ( render_mode ) {
case 0: render_flag = FT_RENDER_MODE_MONO;
load_flag = FT_LOAD_DEFAULT;
target_flag = FT_LOAD_TARGET_MONO;
render_type = "mono";
break;
case 1: render_flag = FT_RENDER_MODE_NORMAL;
load_flag = FT_LOAD_DEFAULT;
target_flag = FT_LOAD_TARGET_NORMAL;
render_type = "gray";
break;
case 2: render_flag = FT_RENDER_MODE_LCD;
load_flag = FT_LOAD_DEFAULT;
target_flag = FT_LOAD_TARGET_LCD;
render_type = "lcd_rgb";
break;
case 3: render_flag = FT_RENDER_MODE_LCD_V;
load_flag = FT_LOAD_DEFAULT;
target_flag = FT_LOAD_TARGET_LCD_V;
render_type = "lcd_ver_rgb";
break;
default:render_flag = FT_RENDER_MODE_NORMAL;
load_flag = FT_LOAD_DEFAULT;
target_flag = FT_LOAD_TARGET_NORMAL;
render_type = "gray";
}
slot = face->glyph;
FILE* fp;
sprintf(name,"./hashes/%s_%d_%s.hash",font_file,
size,
render_type);
fp = fopen(name,"w");
for (i = 0; i < face->num_glyphs; ++i)
{
error = FT_Load_Glyph( face,
i,
load_flag | target_flag);
if(error){
printf("Error loading glyph\n");
}
FT_Render_Glyph( slot,
render_flag);
if(error){
printf("Error rendering the glyph\n");
}
bitmap = &slot->bitmap;
HASH_128 * murmur = (HASH_128 *) malloc(sizeof(HASH_128)) ;
murmur = Generate_Hash_x64_128(bitmap,murmur);
fprintf(fp, "%08x %08x %08x %08x\n", murmur->hash[0], // Print hash
murmur->hash[1],
murmur->hash[2],
murmur->hash[3]);
}
fclose(fp);
FT_Done_Face ( face );
FT_Done_FreeType( library );
return 0;
}
|
