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
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
|
/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*
*/
#include <config.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#define GLYPH(n) glyphs[n]
int max_width = 0;
char inbuf[256];
typedef struct {
int bytes;
int width;
unsigned char *bitmap;
} glyph_t;
unsigned int
invert_bits(unsigned int s, int bits) {
unsigned int rv = 0;
int i;
for (i = 0; i < bits; i++)
if (s & (1 << i))
rv |= (1 << (bits - 1 - i));
return rv;
}
void
read_single_glyph(FILE *in_file, glyph_t *dest, int index, int char_height) {
int width = -1;
int bytes = 0;
int i;
unsigned char *data
= dest->bitmap = (unsigned char *) malloc(char_height * 4); /* Let's waste memory */
do {
unsigned int d = 0;
fgets(inbuf, 255, in_file);
if (char_height-- == -1) {
fprintf(stderr, "Char 0x%02x is too long!\n", index);
exit(1);
}
if (inbuf[0] == '.' || inbuf[0] == '#') {
int cw;
if (width == -1)
width = strlen(inbuf) - 1;
else if (strlen(inbuf) - 1 != width) {
fprintf(stderr, "Char 0x%02x uses inconsistent width\n", index);
exit(1);
}
for (i = 0; i < width; i++)
if (inbuf[i] == '#')
d |= (1 << i);
d = invert_bits(d, ((width + 7) / 8) * 8);
cw = width;
do {
*data = d & 0xff;
d >>= 8;
data++;
cw -= 8;
++bytes;
} while (cw > 0);
}
} while (inbuf[0] == '.' || inbuf[0] == '#');
if (char_height >= 0) {
fprintf(stderr, "Char 0x%02x is too short (by %d)!\n", index, char_height);
exit(1);
}
dest->width = width;
if (width > max_width)
max_width = width;
dest->bytes = bytes;
}
glyph_t *
read_glyphs(FILE *in_file, int nr, int char_height) {
int i;
glyph_t *glyphs = (glyph_t *) calloc(sizeof(glyph_t), nr);
for (i = 0; i < nr; i++)
read_single_glyph(in_file, glyphs + i, i, char_height);
return glyphs;
}
void
convert_font(FILE *in_file, char *structname, FILE *out_file) {
int chars_nr;
glyph_t *glyphs;
int bytes_per_row;
int line_height;
int char_height = 0;
int char_byte_size;
int i;
fscanf(in_file, "# %d %d\n", &chars_nr, &char_height);
printf("Parsing %d characters at height %d\n", chars_nr, char_height);
glyphs = read_glyphs(in_file, chars_nr, char_height);
bytes_per_row = (max_width + 7) >> 3;
line_height = char_height + 1;
fclose(in_file);
char_byte_size = bytes_per_row * char_height;
fprintf(out_file, "/* Auto-generated by bdftofont.c */\n\n");
fprintf(out_file, "#include <gfx_system.h>\n\n");
fprintf(out_file, "static int %s_widths[] = {\n", structname);
for (i = 0; i < chars_nr; i++) {
int rw = GLYPH(i).width;
fprintf(out_file, "\t%d%s\t/* 0x%02x */\n", rw,
(i < (chars_nr - 1)) ? "," : "", i);
}
fprintf(out_file, "};\n\n");
fprintf(out_file, "static unsigned char %s_data[] = {\n", structname);
for (i = 0; i < chars_nr; i++) {
int rh = char_height;
int rw = GLYPH(i).width;
int xoff = 0;
int yoff = 0;
int j, k;
int top_pad = yoff;
int bot_pad = (char_height - rh) - top_pad;
int bytes_to_read = (GLYPH(i).bytes) / rh;
unsigned char *data = GLYPH(i).bitmap;
if (bytes_to_read <= 0) {
fprintf(stderr, "No bytes per row: bytes=%d, w=%d, h=%d\n",
GLYPH(i).bytes, rw, rh);
exit(1);
}
if (bot_pad < 0) {
fprintf(stderr, "Bottom padding <0: height=%d/%d, top_pad=%d\n",
rh, char_height, yoff);
exit(1);
}
fprintf(out_file, "\t/* 0x%02x ('%c') */\n", i, ((i > 31) && (i < 0x7f)) ? i : '.');
/* First, pad everything */
for (j = 0; j < top_pad; j++) {
fprintf(out_file, "\t");
for (k = 0; k < bytes_per_row; k++)
fprintf(out_file, "0x00, ");
fprintf(out_file, "\n");
}
/* Write char data */
for (j = 0; j < rh; j++) {
unsigned int b = 0;
unsigned int oldb;
fprintf(out_file, "\t");
for (k = 0; k < bytes_to_read; k++) {
int shift_offset = 8 * (bytes_to_read - 1 - k);
b |= (*data++ << shift_offset);
}
oldb = b;
for (k = 0; k < bytes_per_row; k++) {
fprintf(out_file, "0x%02x%s", (b & 0xff), (bot_pad || (i + 1 < chars_nr) || (j + 1 < rh) || (k + 1 < bytes_per_row)) ? ", " : "");
b >>= 8;
}
fprintf(out_file, "\t/* ");
for (k = 0; k < rw; k++)
fprintf(out_file, (oldb & (1 << ((bytes_per_row * 8) - 1 - k))) ? "##" : "..");
fprintf(out_file, " */");
fprintf(out_file, "\n");
}
/* Pad bottom */
for (j = 0; j < bot_pad; j++) {
fprintf(out_file, "\t");
for (k = 0; k < bytes_per_row; k++)
fprintf(out_file, "0x00%s", ((i + 1 < chars_nr) || (j + 1 < bot_pad) || (k + 1 < bytes_per_row)) ? ", " : "");
fprintf(out_file, "\n");
}
}
fprintf(out_file, "};\n\n");
fprintf(out_file, "gfx_bitmap_font_t %s = {\n", structname);
fprintf(out_file, "\t-1, /* resource ID */\n");
fprintf(out_file, "\t%d, /* # of characters */\n", chars_nr);
fprintf(out_file, "\t%s_widths, /* Widths */\n", structname);
fprintf(out_file, "\t%d, /* Bytes per row */\n", bytes_per_row);
fprintf(out_file, "\t%d, /* Line height */\n", line_height);
fprintf(out_file, "\t%d, /* Char height */\n", char_height);
fprintf(out_file, "\t%d, /* Char size (occupied, in bytes) */\n", char_byte_size);
fprintf(out_file, "\t%s_data /* Bulk data */\n", structname);
fprintf(out_file, "};\n");
fclose(out_file);
}
int
main(int argc, char **argv) {
FILE *f = NULL;
if (argc < 4) {
fprintf(stderr, "Usage: %s <font.font> <structname> <outfile.c>\n ", argv[0]);
exit(1);
}
f = fopen(argv[1], "r");
if (f)
convert_font(f, argv[2], fopen(argv[3], "w"));
else
perror(argv[1]);
}
|
