4718d7895f0b451e4a529a4e1fcce6a85ec5a4c5
3 * Convert a logo in ASCII PNM format to C source suitable for inclusion in
6 * (C) Copyright 2001-2003 by Geert Uytterhoeven <geert@linux-m68k.org>
8 * --------------------------------------------------------------------------
10 * This file is subject to the terms and conditions of the GNU General Public
11 * License. See the file COPYING in the main directory of the Linux
12 * distribution for more details.
24 static const char *programname
;
25 static const char *filename
;
26 static const char *logoname
= "linux_logo";
27 static const char *outputname
;
31 #define LINUX_LOGO_MONO 1 /* monochrome black/white */
32 #define LINUX_LOGO_VGA16 2 /* 16 colors VGA text palette */
33 #define LINUX_LOGO_CLUT224 3 /* 224 colors */
34 #define LINUX_LOGO_GRAY256 4 /* 256 levels grayscale */
36 static const char *logo_types
[LINUX_LOGO_GRAY256
+1] = {
37 [LINUX_LOGO_MONO
] = "LINUX_LOGO_MONO",
38 [LINUX_LOGO_VGA16
] = "LINUX_LOGO_VGA16",
39 [LINUX_LOGO_CLUT224
] = "LINUX_LOGO_CLUT224",
40 [LINUX_LOGO_GRAY256
] = "LINUX_LOGO_GRAY256"
43 #define MAX_LINUX_LOGO_COLORS 224
51 static const struct color clut_vga16
[16] = {
71 static int logo_type
= LINUX_LOGO_CLUT224
;
72 static unsigned int logo_width
;
73 static unsigned int logo_height
;
74 static struct color
**logo_data
;
75 static struct color logo_clut
[MAX_LINUX_LOGO_COLORS
];
76 static unsigned int logo_clutsize
;
77 static int is_plain_pbm
= 0;
79 static void die(const char *fmt
, ...)
80 __attribute__ ((noreturn
)) __attribute ((format (printf
, 1, 2)));
81 static void usage(void) __attribute ((noreturn
));
84 static unsigned int get_number(FILE *fp
)
88 /* Skip leading whitespace */
92 die("%s: end of file\n", filename
);
94 /* Ignore comments 'till end of line */
98 die("%s: end of file\n", filename
);
101 } while (isspace(c
));
103 /* Parse decimal number */
107 /* some PBM are 'broken'; GiMP for example exports a PBM without space
108 * between the digits. This is Ok cause we know a PBM can only have a '1'
109 * or a '0' for the digit. */
114 die("%s: end of file\n", filename
);
119 static unsigned int get_number255(FILE *fp
, unsigned int maxval
)
121 unsigned int val
= get_number(fp
);
122 return (255*val
+maxval
/2)/maxval
;
125 static void read_image(void)
132 /* open image file */
133 fp
= fopen(filename
, "r");
135 die("Cannot open file %s: %s\n", filename
, strerror(errno
));
137 /* check file type and read file header */
140 die("%s is not a PNM file\n", filename
);
146 /* Plain PBM/PGM/PPM */
152 /* Binary PBM/PGM/PPM */
153 die("%s: Binary PNM is not supported\n"
154 "Use pnmnoraw(1) to convert it to ASCII PNM\n", filename
);
157 die("%s is not a PNM file\n", filename
);
159 logo_width
= get_number(fp
);
160 logo_height
= get_number(fp
);
162 /* allocate image data */
163 logo_data
= (struct color
**)malloc(logo_height
*sizeof(struct color
*));
165 die("%s\n", strerror(errno
));
166 for (i
= 0; i
< logo_height
; i
++) {
167 logo_data
[i
] = malloc(logo_width
*sizeof(struct color
));
169 die("%s\n", strerror(errno
));
172 /* read image data */
177 for (i
= 0; i
< logo_height
; i
++)
178 for (j
= 0; j
< logo_width
; j
++)
179 logo_data
[i
][j
].red
= logo_data
[i
][j
].green
=
180 logo_data
[i
][j
].blue
= 255*(1-get_number(fp
));
185 maxval
= get_number(fp
);
186 for (i
= 0; i
< logo_height
; i
++)
187 for (j
= 0; j
< logo_width
; j
++)
188 logo_data
[i
][j
].red
= logo_data
[i
][j
].green
=
189 logo_data
[i
][j
].blue
= get_number255(fp
, maxval
);
194 maxval
= get_number(fp
);
195 for (i
= 0; i
< logo_height
; i
++)
196 for (j
= 0; j
< logo_width
; j
++) {
197 logo_data
[i
][j
].red
= get_number255(fp
, maxval
);
198 logo_data
[i
][j
].green
= get_number255(fp
, maxval
);
199 logo_data
[i
][j
].blue
= get_number255(fp
, maxval
);
208 static inline int is_black(struct color c
)
210 return c
.red
== 0 && c
.green
== 0 && c
.blue
== 0;
213 static inline int is_white(struct color c
)
215 return c
.red
== 255 && c
.green
== 255 && c
.blue
== 255;
218 static inline int is_gray(struct color c
)
220 return c
.red
== c
.green
&& c
.red
== c
.blue
;
223 static inline int is_equal(struct color c1
, struct color c2
)
225 return c1
.red
== c2
.red
&& c1
.green
== c2
.green
&& c1
.blue
== c2
.blue
;
228 static void write_header(void)
232 out
= fopen(outputname
, "w");
234 die("Cannot create file %s: %s\n", outputname
, strerror(errno
));
240 fputs(" * DO NOT EDIT THIS FILE!\n", out
);
242 fprintf(out
, " * It was automatically generated from %s\n", filename
);
244 fprintf(out
, " * Linux logo %s\n", logoname
);
245 fputs(" */\n\n", out
);
246 fputs("#include <linux/linux_logo.h>\n\n", out
);
247 fprintf(out
, "static unsigned char %s_data[] __initdata = {\n",
251 static void write_footer(void)
253 fputs("\n};\n\n", out
);
254 fprintf(out
, "const struct linux_logo %s __initconst = {\n", logoname
);
255 fprintf(out
, "\t.type\t\t= %s,\n", logo_types
[logo_type
]);
256 fprintf(out
, "\t.width\t\t= %d,\n", logo_width
);
257 fprintf(out
, "\t.height\t\t= %d,\n", logo_height
);
258 if (logo_type
== LINUX_LOGO_CLUT224
) {
259 fprintf(out
, "\t.clutsize\t= %d,\n", logo_clutsize
);
260 fprintf(out
, "\t.clut\t\t= %s_clut,\n", logoname
);
262 fprintf(out
, "\t.data\t\t= %s_data\n", logoname
);
263 fputs("};\n\n", out
);
265 /* close logo file */
270 static int write_hex_cnt
;
272 static void write_hex(unsigned char byte
)
274 if (write_hex_cnt
% 12)
275 fprintf(out
, ", 0x%02x", byte
);
276 else if (write_hex_cnt
)
277 fprintf(out
, ",\n\t0x%02x", byte
);
279 fprintf(out
, "\t0x%02x", byte
);
283 static void write_logo_mono(void)
286 unsigned char val
, bit
;
289 for (i
= 0; i
< logo_height
; i
++)
290 for (j
= 0; j
< logo_width
; j
++)
291 if (!is_black(logo_data
[i
][j
]) && !is_white(logo_data
[i
][j
]))
292 die("Image must be monochrome\n");
294 /* write file header */
297 /* write logo data */
298 for (i
= 0; i
< logo_height
; i
++) {
299 for (j
= 0; j
< logo_width
;) {
300 for (val
= 0, bit
= 0x80; bit
&& j
< logo_width
; j
++, bit
>>= 1)
301 if (logo_data
[i
][j
].red
)
307 /* write logo structure and file footer */
311 static void write_logo_vga16(void)
313 unsigned int i
, j
, k
;
317 for (i
= 0; i
< logo_height
; i
++)
318 for (j
= 0; j
< logo_width
; j
++) {
319 for (k
= 0; k
< 16; k
++)
320 if (is_equal(logo_data
[i
][j
], clut_vga16
[k
]))
323 die("Image must use the 16 console colors only\n"
324 "Use ppmquant(1) -map clut_vga16.ppm to reduce the number "
328 /* write file header */
331 /* write logo data */
332 for (i
= 0; i
< logo_height
; i
++)
333 for (j
= 0; j
< logo_width
; j
++) {
334 for (k
= 0; k
< 16; k
++)
335 if (is_equal(logo_data
[i
][j
], clut_vga16
[k
]))
338 if (++j
< logo_width
) {
339 for (k
= 0; k
< 16; k
++)
340 if (is_equal(logo_data
[i
][j
], clut_vga16
[k
]))
347 /* write logo structure and file footer */
351 static void write_logo_clut224(void)
353 unsigned int i
, j
, k
;
356 for (i
= 0; i
< logo_height
; i
++)
357 for (j
= 0; j
< logo_width
; j
++) {
358 for (k
= 0; k
< logo_clutsize
; k
++)
359 if (is_equal(logo_data
[i
][j
], logo_clut
[k
]))
361 if (k
== logo_clutsize
) {
362 if (logo_clutsize
== MAX_LINUX_LOGO_COLORS
)
363 die("Image has more than %d colors\n"
364 "Use ppmquant(1) to reduce the number of colors\n",
365 MAX_LINUX_LOGO_COLORS
);
366 logo_clut
[logo_clutsize
++] = logo_data
[i
][j
];
370 /* write file header */
373 /* write logo data */
374 for (i
= 0; i
< logo_height
; i
++)
375 for (j
= 0; j
< logo_width
; j
++) {
376 for (k
= 0; k
< logo_clutsize
; k
++)
377 if (is_equal(logo_data
[i
][j
], logo_clut
[k
]))
381 fputs("\n};\n\n", out
);
383 /* write logo clut */
384 fprintf(out
, "static unsigned char %s_clut[] __initdata = {\n",
387 for (i
= 0; i
< logo_clutsize
; i
++) {
388 write_hex(logo_clut
[i
].red
);
389 write_hex(logo_clut
[i
].green
);
390 write_hex(logo_clut
[i
].blue
);
393 /* write logo structure and file footer */
397 static void write_logo_gray256(void)
402 for (i
= 0; i
< logo_height
; i
++)
403 for (j
= 0; j
< logo_width
; j
++)
404 if (!is_gray(logo_data
[i
][j
]))
405 die("Image must be grayscale\n");
407 /* write file header */
410 /* write logo data */
411 for (i
= 0; i
< logo_height
; i
++)
412 for (j
= 0; j
< logo_width
; j
++)
413 write_hex(logo_data
[i
][j
].red
);
415 /* write logo structure and file footer */
419 static void die(const char *fmt
, ...)
424 vfprintf(stderr
, fmt
, ap
);
430 static void usage(void)
433 "Usage: %s [options] <filename>\n"
436 " -h : display this usage information\n"
437 " -n <name> : specify logo name (default: linux_logo)\n"
438 " -o <output> : output to file <output> instead of stdout\n"
439 " -t <type> : specify logo type, one of\n"
440 " mono : monochrome black/white\n"
441 " vga16 : 16 colors VGA text palette\n"
442 " clut224 : 224 colors (default)\n"
443 " gray256 : 256 levels grayscale\n"
447 int main(int argc
, char *argv
[])
451 programname
= argv
[0];
455 opt
= getopt(argc
, argv
, "hn:o:t:");
473 if (!strcmp(optarg
, "mono"))
474 logo_type
= LINUX_LOGO_MONO
;
475 else if (!strcmp(optarg
, "vga16"))
476 logo_type
= LINUX_LOGO_VGA16
;
477 else if (!strcmp(optarg
, "clut224"))
478 logo_type
= LINUX_LOGO_CLUT224
;
479 else if (!strcmp(optarg
, "gray256"))
480 logo_type
= LINUX_LOGO_GRAY256
;
490 if (optind
!= argc
-1)
493 filename
= argv
[optind
];
497 case LINUX_LOGO_MONO
:
501 case LINUX_LOGO_VGA16
:
505 case LINUX_LOGO_CLUT224
:
506 write_logo_clut224();
509 case LINUX_LOGO_GRAY256
:
510 write_logo_gray256();
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