--- /dev/null
+
+/*
+ * 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 = 10*val+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 (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 */
+ 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 int write_dtsi_hex_cnt;
+
+static void write_dtsi_hex(unsigned char byte)
+{
+ if (write_dtsi_hex_cnt % 12)
+ fprintf(out, " 0x%02x", byte);
+ else if (write_dtsi_hex_cnt)
+ fprintf(out, "\n\t\t\t\t0x%02x", byte);
+ else
+ fprintf(out, "\t\t\t\t0x%02x", byte);
+ write_dtsi_hex_cnt++;
+}
+
+
+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 */
+ printf("out bin name: %s\n", outputname);
+ out = fopen(outputname, "w");
+ 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 \n");
+ fputs(" */\n\n", out);
+ fputs("/ {\n\n", out);
+ fprintf(out, "\t\tlogo: %s {\n", logoname);
+ fprintf(out, "\t\t\tlogo_type = <%d>;\n", logo_type);
+ fprintf(out, "\t\t\twidth = <%d>;\n", logo_width);
+ fprintf(out, "\t\t\theight = <%d>;\n", logo_height);
+ fprintf(out, "\t\t\tlogo_clutsize = <%d>;\n", logo_clutsize);
+ fprintf(out, "\t\t\t%s_data = <\n", logoname);
+
+ /* 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_dtsi_hex(k+32);
+ }
+ fputs(">;\n\n", out);
+ fprintf(out, "\t\t\t%s_clut = <\n", logoname);
+ write_dtsi_hex_cnt = 0;
+ for (i = 0; i < logo_clutsize; i++) {
+ write_dtsi_hex(logo_clut[i].red);
+ write_dtsi_hex(logo_clut[i].green);
+ write_dtsi_hex(logo_clut[i].blue);
+ }
+
+ /* write logo structure and file footer */
+ fputs(">;\n\n\t\t};\n};", out);
+ if (outputname){
+ fclose(out);
+ }
+}
+
+
+
+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);
+}
+
projects / firefly-linux-kernel-4.4.55.git / commitdiff