Файловый менеджер

Файловый менеджер - Редактировать - /usr/src/linux-headers-5.4.0-200-generic/scripts/pnmtologo.c

Назад
/* * 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 int is_plain_pbm = 0; 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 = 10val+c-'0'; /* some PBM are 'broken'; GiMP for example exports a PBM without space * between the digits. This is Ok cause we know a PBM can only have a '1' * or a '0' for the digit. / if (is_plain_pbm) break; 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 (255val+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_heightsizeof(struct color )); if (!logo_data) die("%s\n", strerror(errno)); for (i = 0; i < logo_height; i++) { logo_data[i] = malloc(logo_widthsizeof(struct color)); if (!logo_data[i]) die("%s\n", strerror(errno)); } /* read image data / switch (magic) { case '1': / Plain PBM / is_plain_pbm = 1; 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, "const struct linux_logo %s __initconst = {\n", logoname); fprintf(out, "\t.type\t\t= %s,\n", logo_types[logo_type]); fprintf(out, "\t.width\t\t= %d,\n", logo_width); fprintf(out, "\t.height\t\t= %d,\n", logo_height); if (logo_type == LINUX_LOGO_CLUT224) { fprintf(out, "\t.clutsize\t= %d,\n", logo_clutsize); fprintf(out, "\t.clut\t\t= %s_clut,\n", logoname); } fprintf(out, "\t.data\t\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); }

| ver. 1.4 | Github | . | PHP 7.4.3-4ubuntu2.24 | Генерация страницы: 0 | proxy | phpinfo | Настройка