/release/src-rt/linux/linux-2.6/scripts/pnmtologo.c
C | 508 lines | 387 code | 77 blank | 44 comment | 107 complexity | 9cfe4e51797980f68625c9b952b5bbc4 MD5 | raw file
- /*
- * Convert a logo in ASCII PNM format to C source suitable for inclusion in
- * the Linux kernel
- *
- * (C) Copyright 2001-2003 by Geert Uytterhoeven <geert@linux-m68k.org>
- *
- * --------------------------------------------------------------------------
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file COPYING in the main directory of the Linux
- * distribution for more details.
- */
- #include <ctype.h>
- #include <errno.h>
- #include <stdarg.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <unistd.h>
- static const char *programname;
- static const char *filename;
- static const char *logoname = "linux_logo";
- static const char *outputname;
- static FILE *out;
- #define LINUX_LOGO_MONO 1 /* monochrome black/white */
- #define LINUX_LOGO_VGA16 2 /* 16 colors VGA text palette */
- #define LINUX_LOGO_CLUT224 3 /* 224 colors */
- #define LINUX_LOGO_GRAY256 4 /* 256 levels grayscale */
- static const char *logo_types[LINUX_LOGO_GRAY256+1] = {
- [LINUX_LOGO_MONO] = "LINUX_LOGO_MONO",
- [LINUX_LOGO_VGA16] = "LINUX_LOGO_VGA16",
- [LINUX_LOGO_CLUT224] = "LINUX_LOGO_CLUT224",
- [LINUX_LOGO_GRAY256] = "LINUX_LOGO_GRAY256"
- };
- #define MAX_LINUX_LOGO_COLORS 224
- struct color {
- unsigned char red;
- unsigned char green;
- unsigned char blue;
- };
- static const struct color clut_vga16[16] = {
- { 0x00, 0x00, 0x00 },
- { 0x00, 0x00, 0xaa },
- { 0x00, 0xaa, 0x00 },
- { 0x00, 0xaa, 0xaa },
- { 0xaa, 0x00, 0x00 },
- { 0xaa, 0x00, 0xaa },
- { 0xaa, 0x55, 0x00 },
- { 0xaa, 0xaa, 0xaa },
- { 0x55, 0x55, 0x55 },
- { 0x55, 0x55, 0xff },
- { 0x55, 0xff, 0x55 },
- { 0x55, 0xff, 0xff },
- { 0xff, 0x55, 0x55 },
- { 0xff, 0x55, 0xff },
- { 0xff, 0xff, 0x55 },
- { 0xff, 0xff, 0xff },
- };
- static int logo_type = LINUX_LOGO_CLUT224;
- static unsigned int logo_width;
- static unsigned int logo_height;
- static struct color **logo_data;
- static struct color logo_clut[MAX_LINUX_LOGO_COLORS];
- static unsigned int logo_clutsize;
- static void die(const char *fmt, ...)
- __attribute__ ((noreturn)) __attribute ((format (printf, 1, 2)));
- static void usage(void) __attribute ((noreturn));
- static unsigned int get_number(FILE *fp)
- {
- int c, val;
- /* Skip leading whitespace */
- do {
- c = fgetc(fp);
- if (c == EOF)
- die("%s: end of file\n", filename);
- if (c == '#') {
- /* Ignore comments 'till end of line */
- do {
- c = fgetc(fp);
- if (c == EOF)
- die("%s: end of file\n", filename);
- } while (c != '\n');
- }
- } while (isspace(c));
- /* Parse decimal number */
- val = 0;
- while (isdigit(c)) {
- val = 10*val+c-'0';
- c = fgetc(fp);
- if (c == EOF)
- die("%s: end of file\n", filename);
- }
- return val;
- }
- static unsigned int get_number255(FILE *fp, unsigned int maxval)
- {
- unsigned int val = get_number(fp);
- return (255*val+maxval/2)/maxval;
- }
- static void read_image(void)
- {
- FILE *fp;
- unsigned int i, j;
- int magic;
- unsigned int maxval;
- /* open image file */
- fp = fopen(filename, "r");
- if (!fp)
- die("Cannot open file %s: %s\n", filename, strerror(errno));
- /* check file type and read file header */
- magic = fgetc(fp);
- if (magic != 'P')
- die("%s is not a PNM file\n", filename);
- magic = fgetc(fp);
- switch (magic) {
- case '1':
- case '2':
- case '3':
- /* Plain PBM/PGM/PPM */
- break;
- case '4':
- case '5':
- case '6':
- /* Binary PBM/PGM/PPM */
- die("%s: Binary PNM is not supported\n"
- "Use pnmnoraw(1) to convert it to ASCII PNM\n", filename);
- default:
- die("%s is not a PNM file\n", filename);
- }
- logo_width = get_number(fp);
- logo_height = get_number(fp);
- /* allocate image data */
- logo_data = (struct color **)malloc(logo_height*sizeof(struct color *));
- if (!logo_data)
- die("%s\n", strerror(errno));
- for (i = 0; i < logo_height; i++) {
- logo_data[i] = malloc(logo_width*sizeof(struct color));
- if (!logo_data[i])
- die("%s\n", strerror(errno));
- }
- /* read image data */
- switch (magic) {
- case '1':
- /* Plain PBM */
- for (i = 0; i < logo_height; i++)
- for (j = 0; j < logo_width; j++)
- logo_data[i][j].red = logo_data[i][j].green =
- logo_data[i][j].blue = 255*(1-get_number(fp));
- break;
- case '2':
- /* Plain PGM */
- maxval = get_number(fp);
- for (i = 0; i < logo_height; i++)
- for (j = 0; j < logo_width; j++)
- logo_data[i][j].red = logo_data[i][j].green =
- logo_data[i][j].blue = get_number255(fp, maxval);
- break;
- case '3':
- /* Plain PPM */
- maxval = get_number(fp);
- for (i = 0; i < logo_height; i++)
- for (j = 0; j < logo_width; j++) {
- logo_data[i][j].red = get_number255(fp, maxval);
- logo_data[i][j].green = get_number255(fp, maxval);
- logo_data[i][j].blue = get_number255(fp, maxval);
- }
- break;
- }
- /* close file */
- fclose(fp);
- }
- static inline int is_black(struct color c)
- {
- return c.red == 0 && c.green == 0 && c.blue == 0;
- }
- static inline int is_white(struct color c)
- {
- return c.red == 255 && c.green == 255 && c.blue == 255;
- }
- static inline int is_gray(struct color c)
- {
- return c.red == c.green && c.red == c.blue;
- }
- static inline int is_equal(struct color c1, struct color c2)
- {
- return c1.red == c2.red && c1.green == c2.green && c1.blue == c2.blue;
- }
- static void write_header(void)
- {
- /* open logo file */
- if (outputname) {
- out = fopen(outputname, "w");
- if (!out)
- die("Cannot create file %s: %s\n", outputname, strerror(errno));
- } else {
- out = stdout;
- }
- fputs("/*\n", out);
- fputs(" * DO NOT EDIT THIS FILE!\n", out);
- fputs(" *\n", out);
- fprintf(out, " * It was automatically generated from %s\n", filename);
- fputs(" *\n", out);
- fprintf(out, " * Linux logo %s\n", logoname);
- fputs(" */\n\n", out);
- fputs("#include <linux/linux_logo.h>\n\n", out);
- fprintf(out, "static unsigned char %s_data[] __initdata = {\n",
- logoname);
- }
- static void write_footer(void)
- {
- fputs("\n};\n\n", out);
- fprintf(out, "struct linux_logo %s __initdata = {\n", logoname);
- fprintf(out, " .type\t= %s,\n", logo_types[logo_type]);
- fprintf(out, " .width\t= %d,\n", logo_width);
- fprintf(out, " .height\t= %d,\n", logo_height);
- if (logo_type == LINUX_LOGO_CLUT224) {
- fprintf(out, " .clutsize\t= %d,\n", logo_clutsize);
- fprintf(out, " .clut\t= %s_clut,\n", logoname);
- }
- fprintf(out, " .data\t= %s_data\n", logoname);
- fputs("};\n\n", out);
- /* close logo file */
- if (outputname)
- fclose(out);
- }
- static int write_hex_cnt;
- static void write_hex(unsigned char byte)
- {
- if (write_hex_cnt % 12)
- fprintf(out, ", 0x%02x", byte);
- else if (write_hex_cnt)
- fprintf(out, ",\n\t0x%02x", byte);
- else
- fprintf(out, "\t0x%02x", byte);
- write_hex_cnt++;
- }
- static void write_logo_mono(void)
- {
- unsigned int i, j;
- unsigned char val, bit;
- /* validate image */
- for (i = 0; i < logo_height; i++)
- for (j = 0; j < logo_width; j++)
- if (!is_black(logo_data[i][j]) && !is_white(logo_data[i][j]))
- die("Image must be monochrome\n");
- /* write file header */
- write_header();
- /* write logo data */
- for (i = 0; i < logo_height; i++) {
- for (j = 0; j < logo_width;) {
- for (val = 0, bit = 0x80; bit && j < logo_width; j++, bit >>= 1)
- if (logo_data[i][j].red)
- val |= bit;
- write_hex(val);
- }
- }
- /* write logo structure and file footer */
- write_footer();
- }
- static void write_logo_vga16(void)
- {
- unsigned int i, j, k;
- unsigned char val;
- /* validate image */
- for (i = 0; i < logo_height; i++)
- for (j = 0; j < logo_width; j++) {
- for (k = 0; k < 16; k++)
- if (is_equal(logo_data[i][j], clut_vga16[k]))
- break;
- if (k == 16)
- die("Image must use the 16 console colors only\n"
- "Use ppmquant(1) -map clut_vga16.ppm to reduce the number "
- "of colors\n");
- }
- /* write file header */
- write_header();
- /* write logo data */
- for (i = 0; i < logo_height; i++)
- for (j = 0; j < logo_width; j++) {
- for (k = 0; k < 16; k++)
- if (is_equal(logo_data[i][j], clut_vga16[k]))
- break;
- val = k<<4;
- if (++j < logo_width) {
- for (k = 0; k < 16; k++)
- if (is_equal(logo_data[i][j], clut_vga16[k]))
- break;
- val |= k;
- }
- write_hex(val);
- }
- /* write logo structure and file footer */
- write_footer();
- }
- static void write_logo_clut224(void)
- {
- unsigned int i, j, k;
- /* validate image */
- for (i = 0; i < logo_height; i++)
- for (j = 0; j < logo_width; j++) {
- for (k = 0; k < logo_clutsize; k++)
- if (is_equal(logo_data[i][j], logo_clut[k]))
- break;
- if (k == logo_clutsize) {
- if (logo_clutsize == MAX_LINUX_LOGO_COLORS)
- die("Image has more than %d colors\n"
- "Use ppmquant(1) to reduce the number of colors\n",
- MAX_LINUX_LOGO_COLORS);
- logo_clut[logo_clutsize++] = logo_data[i][j];
- }
- }
- /* write file header */
- write_header();
- /* write logo data */
- for (i = 0; i < logo_height; i++)
- for (j = 0; j < logo_width; j++) {
- for (k = 0; k < logo_clutsize; k++)
- if (is_equal(logo_data[i][j], logo_clut[k]))
- break;
- write_hex(k+32);
- }
- fputs("\n};\n\n", out);
- /* write logo clut */
- fprintf(out, "static unsigned char %s_clut[] __initdata = {\n",
- logoname);
- write_hex_cnt = 0;
- for (i = 0; i < logo_clutsize; i++) {
- write_hex(logo_clut[i].red);
- write_hex(logo_clut[i].green);
- write_hex(logo_clut[i].blue);
- }
- /* write logo structure and file footer */
- write_footer();
- }
- static void write_logo_gray256(void)
- {
- unsigned int i, j;
- /* validate image */
- for (i = 0; i < logo_height; i++)
- for (j = 0; j < logo_width; j++)
- if (!is_gray(logo_data[i][j]))
- die("Image must be grayscale\n");
- /* write file header */
- write_header();
- /* write logo data */
- for (i = 0; i < logo_height; i++)
- for (j = 0; j < logo_width; j++)
- write_hex(logo_data[i][j].red);
- /* write logo structure and file footer */
- write_footer();
- }
- static void die(const char *fmt, ...)
- {
- va_list ap;
- va_start(ap, fmt);
- vfprintf(stderr, fmt, ap);
- va_end(ap);
- exit(1);
- }
- static void usage(void)
- {
- die("\n"
- "Usage: %s [options] <filename>\n"
- "\n"
- "Valid options:\n"
- " -h : display this usage information\n"
- " -n <name> : specify logo name (default: linux_logo)\n"
- " -o <output> : output to file <output> instead of stdout\n"
- " -t <type> : specify logo type, one of\n"
- " mono : monochrome black/white\n"
- " vga16 : 16 colors VGA text palette\n"
- " clut224 : 224 colors (default)\n"
- " gray256 : 256 levels grayscale\n"
- "\n", programname);
- }
- int main(int argc, char *argv[])
- {
- int opt;
- programname = argv[0];
- opterr = 0;
- while (1) {
- opt = getopt(argc, argv, "hn:o:t:");
- if (opt == -1)
- break;
- switch (opt) {
- case 'h':
- usage();
- break;
- case 'n':
- logoname = optarg;
- break;
- case 'o':
- outputname = optarg;
- break;
- case 't':
- if (!strcmp(optarg, "mono"))
- logo_type = LINUX_LOGO_MONO;
- else if (!strcmp(optarg, "vga16"))
- logo_type = LINUX_LOGO_VGA16;
- else if (!strcmp(optarg, "clut224"))
- logo_type = LINUX_LOGO_CLUT224;
- else if (!strcmp(optarg, "gray256"))
- logo_type = LINUX_LOGO_GRAY256;
- else
- usage();
- break;
- default:
- usage();
- break;
- }
- }
- if (optind != argc-1)
- usage();
- filename = argv[optind];
- read_image();
- switch (logo_type) {
- case LINUX_LOGO_MONO:
- write_logo_mono();
- break;
- case LINUX_LOGO_VGA16:
- write_logo_vga16();
- break;
- case LINUX_LOGO_CLUT224:
- write_logo_clut224();
- break;
- case LINUX_LOGO_GRAY256:
- write_logo_gray256();
- break;
- }
- exit(0);
- }