|
|
@@ -0,0 +1,167 @@
|
|
|
1
|
+/* Copyright (C) 2018 Curtis McEnroe <june@causal.agency>
|
|
|
2
|
+ *
|
|
|
3
|
+ * This program is free software: you can redistribute it and/or modify
|
|
|
4
|
+ * it under the terms of the GNU Affero General Public License as published by
|
|
|
5
|
+ * the Free Software Foundation, either version 3 of the License, or
|
|
|
6
|
+ * (at your option) any later version.
|
|
|
7
|
+ *
|
|
|
8
|
+ * This program is distributed in the hope that it will be useful,
|
|
|
9
|
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
10
|
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
11
|
+ * GNU Affero General Public License for more details.
|
|
|
12
|
+ *
|
|
|
13
|
+ * You should have received a copy of the GNU Affero General Public License
|
|
|
14
|
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
15
|
+ */
|
|
|
16
|
+
|
|
|
17
|
+#include <arpa/inet.h>
|
|
|
18
|
+#include <err.h>
|
|
|
19
|
+#include <fcntl.h>
|
|
|
20
|
+#include <stdint.h>
|
|
|
21
|
+#include <stdio.h>
|
|
|
22
|
+#include <stdlib.h>
|
|
|
23
|
+#include <string.h>
|
|
|
24
|
+#include <sys/mman.h>
|
|
|
25
|
+#include <sysexits.h>
|
|
|
26
|
+#include <unistd.h>
|
|
|
27
|
+#include <zlib.h>
|
|
|
28
|
+
|
|
|
29
|
+#include "torus.h"
|
|
|
30
|
+
|
|
|
31
|
+static const uint8_t Palette[16][3] = {
|
|
|
32
|
+ { 0x00, 0x00, 0x00 },
|
|
|
33
|
+ { 0xAA, 0x00, 0x00 },
|
|
|
34
|
+ { 0x00, 0xAA, 0x00 },
|
|
|
35
|
+ { 0xAA, 0x55, 0x00 },
|
|
|
36
|
+ { 0x00, 0x00, 0xAA },
|
|
|
37
|
+ { 0xAA, 0x00, 0xAA },
|
|
|
38
|
+ { 0x00, 0xAA, 0xAA },
|
|
|
39
|
+ { 0xAA, 0xAA, 0xAA },
|
|
|
40
|
+ { 0x55, 0x55, 0x55 },
|
|
|
41
|
+ { 0xFF, 0x55, 0x55 },
|
|
|
42
|
+ { 0x55, 0xFF, 0x55 },
|
|
|
43
|
+ { 0xFF, 0xFF, 0x55 },
|
|
|
44
|
+ { 0x55, 0x55, 0xFF },
|
|
|
45
|
+ { 0xFF, 0x55, 0xFF },
|
|
|
46
|
+ { 0x55, 0xFF, 0xFF },
|
|
|
47
|
+ { 0xFF, 0xFF, 0xFF },
|
|
|
48
|
+};
|
|
|
49
|
+
|
|
|
50
|
+static uint32_t crc;
|
|
|
51
|
+static void pngWrite(const void *ptr, size_t size) {
|
|
|
52
|
+ fwrite(ptr, size, 1, stdout);
|
|
|
53
|
+ if (ferror(stdout)) err(EX_IOERR, "(stdout)");
|
|
|
54
|
+ crc = crc32(crc, ptr, size);
|
|
|
55
|
+}
|
|
|
56
|
+static void pngInt(uint32_t host) {
|
|
|
57
|
+ uint32_t net = htonl(host);
|
|
|
58
|
+ pngWrite(&net, 4);
|
|
|
59
|
+}
|
|
|
60
|
+static void pngChunk(char type[static 4], uint32_t size) {
|
|
|
61
|
+ pngInt(size);
|
|
|
62
|
+ crc = crc32(0, Z_NULL, 0);
|
|
|
63
|
+ pngWrite(type, 4);
|
|
|
64
|
+}
|
|
|
65
|
+
|
|
|
66
|
+int main(int argc, char *argv[]) {
|
|
|
67
|
+ const char *fontPath = "default8x16.psfu";
|
|
|
68
|
+ const char *dataPath = "torus.dat";
|
|
|
69
|
+ uint32_t tileX = TileInitX;
|
|
|
70
|
+ uint32_t tileY = TileInitY;
|
|
|
71
|
+
|
|
|
72
|
+ int opt;
|
|
|
73
|
+ while (0 < (opt = getopt(argc, argv, "d:f:x:y:"))) {
|
|
|
74
|
+ switch (opt) {
|
|
|
75
|
+ break; case 'd': dataPath = optarg;
|
|
|
76
|
+ break; case 'f': fontPath = optarg;
|
|
|
77
|
+ break; case 'x': tileX = strtoul(optarg, NULL, 0) % TileCols;
|
|
|
78
|
+ break; case 'y': tileY = strtoul(optarg, NULL, 0) % TileRows;
|
|
|
79
|
+ break; default: return EX_USAGE;
|
|
|
80
|
+ }
|
|
|
81
|
+ }
|
|
|
82
|
+
|
|
|
83
|
+ FILE *file = fopen(fontPath, "r");
|
|
|
84
|
+ if (!file) err(EX_NOINPUT, "%s", fontPath);
|
|
|
85
|
+
|
|
|
86
|
+ struct {
|
|
|
87
|
+ uint32_t magic;
|
|
|
88
|
+ uint32_t version;
|
|
|
89
|
+ uint32_t size;
|
|
|
90
|
+ uint32_t flags;
|
|
|
91
|
+ struct {
|
|
|
92
|
+ uint32_t len;
|
|
|
93
|
+ uint32_t size;
|
|
|
94
|
+ uint32_t height;
|
|
|
95
|
+ uint32_t width;
|
|
|
96
|
+ } glyph;
|
|
|
97
|
+ } psf;
|
|
|
98
|
+ size_t len = fread(&psf, sizeof(psf), 1, file);
|
|
|
99
|
+ if (ferror(file)) err(EX_IOERR, "%s", fontPath);
|
|
|
100
|
+ if (len < 1) errx(EX_DATAERR, "%s: truncated header", fontPath);
|
|
|
101
|
+
|
|
|
102
|
+ uint8_t glyphs[psf.glyph.len][psf.glyph.height][(psf.glyph.width + 7) / 8];
|
|
|
103
|
+ len = fread(glyphs, psf.glyph.size, psf.glyph.len, file);
|
|
|
104
|
+ if (ferror(file)) err(EX_IOERR, "%s", fontPath);
|
|
|
105
|
+ if (len < 1) errx(EX_DATAERR, "%s: truncated glyphs", fontPath);
|
|
|
106
|
+ fclose(file);
|
|
|
107
|
+
|
|
|
108
|
+ int fd = open(dataPath, O_RDONLY);
|
|
|
109
|
+ if (fd < 0) err(EX_NOINPUT, "%s", dataPath);
|
|
|
110
|
+
|
|
|
111
|
+ struct Tile *tile = mmap(
|
|
|
112
|
+ NULL, sizeof(struct Tile),
|
|
|
113
|
+ PROT_READ, MAP_SHARED,
|
|
|
114
|
+ fd, sizeof(struct Tile) * (TileRows * tileY + tileX)
|
|
|
115
|
+ );
|
|
|
116
|
+ if (tile == MAP_FAILED) err(EX_IOERR, "mmap");
|
|
|
117
|
+ close(fd);
|
|
|
118
|
+
|
|
|
119
|
+ pngWrite("\x89PNG\r\n\x1A\n", 8);
|
|
|
120
|
+
|
|
|
121
|
+ uint32_t width = CellCols * psf.glyph.width;
|
|
|
122
|
+ uint32_t height = CellRows * psf.glyph.height;
|
|
|
123
|
+
|
|
|
124
|
+ pngChunk("IHDR", 13);
|
|
|
125
|
+ pngInt(width);
|
|
|
126
|
+ pngInt(height);
|
|
|
127
|
+ pngWrite("\x08\x03\x00\x00\x00", 5);
|
|
|
128
|
+ pngInt(crc);
|
|
|
129
|
+
|
|
|
130
|
+ pngChunk("PLTE", sizeof(Palette));
|
|
|
131
|
+ pngWrite(Palette, sizeof(Palette));
|
|
|
132
|
+ pngInt(crc);
|
|
|
133
|
+
|
|
|
134
|
+ uint8_t data[height][1 + width];
|
|
|
135
|
+ memset(data, 0, sizeof(data));
|
|
|
136
|
+
|
|
|
137
|
+ for (uint32_t y = 0; y < CellRows; ++y) {
|
|
|
138
|
+ for (uint32_t x = 0; x < CellCols; ++x) {
|
|
|
139
|
+ uint8_t cell = tile->cells[y][x];
|
|
|
140
|
+ uint8_t fg = tile->colors[y][x] & 0x0F;
|
|
|
141
|
+ uint8_t bg = tile->colors[y][x] >> 4;
|
|
|
142
|
+
|
|
|
143
|
+ uint32_t row = psf.glyph.height * y;
|
|
|
144
|
+ uint32_t col = psf.glyph.width * x;
|
|
|
145
|
+ for (uint8_t gy = 0; gy < psf.glyph.height; ++gy) {
|
|
|
146
|
+ for (uint8_t gx = 0; gx < psf.glyph.width; ++gx) {
|
|
|
147
|
+ uint8_t bit = glyphs[cell][gy][gx / 8] >> (7 - gx % 8) & 1;
|
|
|
148
|
+ data[row + gy][1 + col + gx] = (bit ? fg : bg);
|
|
|
149
|
+ }
|
|
|
150
|
+ }
|
|
|
151
|
+ }
|
|
|
152
|
+ }
|
|
|
153
|
+
|
|
|
154
|
+ uLong size = compressBound(sizeof(data));
|
|
|
155
|
+ uint8_t deflate[size];
|
|
|
156
|
+ int error = compress(deflate, &size, (Byte *)data, sizeof(data));
|
|
|
157
|
+ if (error != Z_OK) errx(EX_SOFTWARE, "compress: %d", error);
|
|
|
158
|
+
|
|
|
159
|
+ pngChunk("IDAT", size);
|
|
|
160
|
+ pngWrite(deflate, size);
|
|
|
161
|
+ pngInt(crc);
|
|
|
162
|
+
|
|
|
163
|
+ pngChunk("IEND", 0);
|
|
|
164
|
+ pngInt(crc);
|
|
|
165
|
+
|
|
|
166
|
+ return EX_OK;
|
|
|
167
|
+}
|
