451 lines
11 KiB
C
451 lines
11 KiB
C
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/*
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* Convert a logo in ASCII PNM format to C source suitable for inclusion in
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* the Linux kernel
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*
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* (C) Copyright 2001-2003 by Geert Uytterhoeven <geert@linux-m68k.org>
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*
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* --------------------------------------------------------------------------
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file COPYING in the main directory of the Linux
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* distribution for more details.
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*/
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#include <ctype.h>
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#include <errno.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <sys/mman.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/mman.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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static const char *programname;
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static const char *filename;
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static const char *logoname = "linux_logo";
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static const char *outputname;
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static FILE *out;
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//#define debug 0
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#define LINUX_LOGO_MONO 1 /* monochrome black/white */
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#define LINUX_LOGO_VGA16 2 /* 16 colors VGA text palette */
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#define LINUX_LOGO_CLUT224 3 /* 224 colors */
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#define LINUX_LOGO_GRAY256 4 /* 256 levels grayscale */
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#define LINUX_LOGO_bmp 5 /* truecolours*/
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static const char *logo_types[LINUX_LOGO_bmp+1] = {
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[LINUX_LOGO_MONO] = "LINUX_LOGO_MONO",
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[LINUX_LOGO_VGA16] = "LINUX_LOGO_VGA16",
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[LINUX_LOGO_CLUT224] = "LINUX_LOGO_CLUT224",
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[LINUX_LOGO_GRAY256] = "LINUX_LOGO_GRAY256",
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[LINUX_LOGO_bmp] = "LINUX_LOGO_bmp"
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};
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#define MAX_LINUX_LOGO_COLORS 224
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struct color {
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char blue;
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char green;
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char red;
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};
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static const struct color clut_vga16[16] = {
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{ 0x00, 0x00, 0x00 },
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{ 0x00, 0x00, 0xaa },
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{ 0x00, 0xaa, 0x00 },
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{ 0x00, 0xaa, 0xaa },
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{ 0xaa, 0x00, 0x00 },
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{ 0xaa, 0x00, 0xaa },
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{ 0xaa, 0x55, 0x00 },
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{ 0xaa, 0xaa, 0xaa },
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{ 0x55, 0x55, 0x55 },
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{ 0x55, 0x55, 0xff },
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{ 0x55, 0xff, 0x55 },
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{ 0x55, 0xff, 0xff },
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{ 0xff, 0x55, 0x55 },
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{ 0xff, 0x55, 0xff },
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{ 0xff, 0xff, 0x55 },
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{ 0xff, 0xff, 0xff },
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};
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unsigned char data_name[] = {
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0x6C, 0x6F, 0x67,
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0x6F, 0x5F, 0x52,
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0x4B, 0x6C, 0x6F,
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0x67, 0x6F, 0x5F,
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0x64, 0x61, 0x74,
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0x61
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};
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unsigned char clut_name[] = {
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0x62, 0x6D, 0x70,
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0x6C, 0x6F, 0x67,
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0x6F, 0x5F, 0x52,
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0x4B, 0x6C, 0x6F,
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0x67, 0x6F, 0x5F,
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0x63, 0x6C, 0x75,
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0x74, 0x00
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};
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static int logo_type = LINUX_LOGO_CLUT224;
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static unsigned long logo_width;
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static unsigned long logo_height;
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static unsigned long data_long;
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static unsigned long data_start;
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static unsigned char *logo_data;
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static void die(const char *fmt, ...)
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__attribute__ ((noreturn)) __attribute ((format (printf, 1, 2)));
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static void usage(void) __attribute ((noreturn));
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static void read_image(void)
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{
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int fd;
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struct stat s;
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unsigned char *data;
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/* open image file */
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fd = open(filename, O_RDONLY);
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if (fd < 0)
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die("Cannot open file isll.. %s: %s\n", filename, strerror(errno));
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if (fstat(fd, &s) < 0)
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die("Cannot stat file isll.. %s: %s\n", filename, strerror(errno));
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#if 0
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ret = fread(read_buf,1,0x26,fp);
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if (ret != 0x26)
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die("read file %s: error read_buf=%ld\n", filename,ret);
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logo_height = (read_buf[0x19]<<24) + (read_buf[0x18]<<16) +(read_buf[0x17]<<8) +(read_buf[0x16]);
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logo_width = (read_buf[0x15]<<24) + (read_buf[0x14]<<16) +(read_buf[0x13]<<8) +(read_buf[0x12]);
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data_start = (read_buf[0x0d]<<24) + (read_buf[0x0c]<<16) +(read_buf[0x0b]<<8) +(read_buf[0x0a]);
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data_long = (read_buf[0x25]<<24) + (read_buf[0x24]<<16) +(read_buf[0x023]<<8) +(read_buf[0x22]);
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#endif
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/* allocate image data */
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//logo_data = (char *)malloc(logo_height * logo_width * 3);
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//data_long = logo_height * logo_width * 3;
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//#ifdef debug
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#if 0
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die("%s..logo_height=%ld,logo_width=%ld,data_start=%ld,data_long=%ld,sizeof(struct color)=%d, \
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read_buf[0x17]=%d read_buf[0x13]=%d\n\n",filename,logo_height,logo_width,data_start, \
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data_long,sizeof(struct color),read_buf[0x17],read_buf[0x13]);
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if ((logo_width*logo_height*3) != data_long)
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die("something is wront in scripts/bmptologo.c\n");
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#endif
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#if 0
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fseek(fp,data_start,SEEK_SET);
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ret = fread(logo_data,1,data_long,fp);
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if (ret != data_long)
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die("read file %s: error logo_data=%ld\n", filename,ret);
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#else
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data = mmap(0, s.st_size, PROT_READ, MAP_SHARED, fd, 0);
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if (data == MAP_FAILED)
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die("read file %s: error logo_data\n", filename);
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logo_data = data + 54;
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logo_height = (data[0x19]<<24) + (data[0x18]<<16) +(data[0x17]<<8) +(data[0x16]);
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logo_width = (data[0x15]<<24) + (data[0x14]<<16) +(data[0x13]<<8) +(data[0x12]);
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data_start = (data[0x0d]<<24) + (data[0x0c]<<16) +(data[0x0b]<<8) +(data[0x0a]);
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data_long = (data[0x25]<<24) + (data[0x24]<<16) +(data[0x023]<<8) +(data[0x22]);
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data_long = logo_height * logo_width * 3;
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#if 0
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die("%s..logo_height=%ld,logo_width=%ld,data_start=%ld,data_long=%ld,sizeof(struct color)=%d, \
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read_buf[0x17]=%d read_buf[0x13]=%d\n\n",filename,logo_height,logo_width,data_start, \
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data_long,sizeof(struct color),read_buf[0x17],read_buf[0x13]);
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if ((logo_width*logo_height*3) != data_long)
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die("something is wront in scripts/bmptologo.c\n");
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#endif
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#endif
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#ifdef debug
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die("logo_data is:%02x,%02x,%02x,%02x,%02x,%02x,%02x,%02x,%02x,%02x,%02x,%02x:over\n", \
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logo_data[0],logo_data[1],logo_data[2],logo_data[3],logo_data[4],logo_data[5],logo_data[6],logo_data[7],logo_data[8], \
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logo_data[9],logo_data[10],logo_data[11]);
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#endif
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/* close file */
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close(fd);
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}
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static inline int is_black(struct color c)
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{
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return c.red == 0 && c.green == 0 && c.blue == 0;
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}
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static inline int is_white(struct color c)
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{
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return c.red == 255 && c.green == 255 && c.blue == 255;
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}
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static inline int is_gray(struct color c)
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{
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return c.red == c.green && c.red == c.blue;
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}
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static inline int is_equal(struct color c1, struct color c2)
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{
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return c1.red == c2.red && c1.green == c2.green && c1.blue == c2.blue;
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}
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static int write_hex_cnt;
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static void write_hex(unsigned char byte)
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{
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if (write_hex_cnt % 12)
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fprintf(out, ", 0x%02x", byte);
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else if (write_hex_cnt)
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fprintf(out, ",\n\t0x%02x", byte);
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else
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fprintf(out, "\t0x%02x", byte);
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write_hex_cnt++;
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}
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static void write_header(void)
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{
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/* open logo file */
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if (outputname) {
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out = fopen(outputname, "w");
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if (!out)
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die("Cannot create file %s: %s\n", outputname, strerror(errno));
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} else {
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out = stdout;
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}
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fputs("/*\n", out);
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fputs(" * DO NOT EDIT THIS FILE!\n", out);
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fputs(" *\n", out);
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fprintf(out, " * It was automatically generated from %s\n", filename);
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fputs(" *\n", out);
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fprintf(out, " * Linux logo %s\n", logoname);
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fputs(" */\n\n", out);
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fputs("#include <linux/linux_logo.h>\n\n", out);
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fprintf(out, "static unsigned char %s_data[] __initdata = {\n",
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logoname);
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}
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static void write_footer(void)
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{
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fputs("\n};\n\n", out);
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fprintf(out, "const struct linux_logo %s __initconst = {\n", logoname);
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fprintf(out, "\t.type\t\t= %s,\n", logo_types[logo_type]);
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if (logo_type == LINUX_LOGO_bmp) {
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fprintf(out, "\t.width\t\t= %ld,\n", logo_width);
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fprintf(out, "\t.height\t\t= %ld,\n", logo_height);
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//fprintf(out, "\t.data\t\t= %s_data,\n", logoname);
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fprintf(out, "\t.data\t\t= &(%s_data[%ld]),\n", logoname,sizeof(data_name) + 8);
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fprintf(out, "\t.clut\t\t= %s_clut\n", logoname);
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}
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fputs("};\n\n", out);
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/* close logo file */
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if (outputname)
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fclose(out);
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}
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static void write_logo_bmp(void)
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{
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unsigned long i=0, j=0;
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unsigned char *position ;
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/* validate image */
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/*statistics how many colours ,and if have over 224
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logo_clutsize = 0;
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for (i = 0; i < logo_height; i++)
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for (j = 0; j < logo_width; j++) {
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for (k = 0; k < logo_clutsize; k++)
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if (is_equal(logo_data[i][j], logo_clut[k]))
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break;
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if (k == logo_clutsize) {
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if (logo_clutsize == MAX_LINUX_LOGO_COLORS)
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die("Image has more than %d colors\n"
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"Use ppmquant(1) to reduce the number of colors\n",
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MAX_LINUX_LOGO_COLORS);
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logo_clut[logo_clutsize++] = logo_data[i][j];
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}
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}
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*/
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write_hex_cnt = 0;
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/* write file header */
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write_header();
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#if 1
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write_hex((unsigned char)(logo_width >> 8));
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write_hex((unsigned char)logo_width);
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write_hex((unsigned char)(logo_height >> 8));
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write_hex((unsigned char)logo_height);
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for (i = 0; i < sizeof(data_name); i++){
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write_hex(data_name[i]);
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}
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write_hex((unsigned char)(logo_width >> 8));
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write_hex((unsigned char)logo_width);
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write_hex((unsigned char)(logo_height >> 8));
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write_hex((unsigned char)logo_height);
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#endif
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#if 0
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/* write logo data */
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for (i = 0; i < logo_height; i++)
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for (j = 0; j < logo_width; j++) {
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for (k = 0; k < logo_clutsize; k++)
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if (is_equal(logo_data[i][j], logo_clut[k]))
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break;
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write_hex(k+32);
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}
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fputs("\n};\n\n", out);
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/* write logo clut */
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fprintf(out, "static unsigned char %s_clut[] __initdata = {\n",
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logoname);
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write_hex_cnt = 0;
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for (i = 0; i < sizeof(clut_name); i++){
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write_hex(clut_name[i]);
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}
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write_hex(logo_clutsize);
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for (i = 0; i < logo_clutsize; i++) {
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write_hex(logo_clut[i].red);
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write_hex(logo_clut[i].green);
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write_hex(logo_clut[i].blue);
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}
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for (i = logo_clutsize; i < (MAX_LINUX_LOGO_COLORS * 3); i++)
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{
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write_hex(32);
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}
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/* write logo structure and file footer */
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#endif
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#if 1
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for (i=logo_height; i>0; i--)
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{
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for (j=0; j<logo_width; j++)
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{
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position = logo_data + (i-1)* logo_width * 3 + 3 * j;
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#if 0
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write_hex(*(position));
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write_hex(*(position+1));
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write_hex(*(position+2));
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#else
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write_hex(*(position));
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write_hex(*(position+1));
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write_hex(*(position+2));
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write_hex(0);
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#endif
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}
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}
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#endif
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fputs("\n};\n\n", out);
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/* write logo clut */
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fprintf(out, "static unsigned char %s_clut[] __initdata = {\n",
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logoname);
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write_hex_cnt = 0;
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for (i = 0; i < sizeof(clut_name); i++){
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write_hex(clut_name[i]);
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}
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write_footer();
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}
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static void die(const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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vfprintf(stderr, fmt, ap);
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va_end(ap);
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exit(1);
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}
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static void usage(void)
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{
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die("\n"
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"Usage: %s [options] <filename>\n"
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"\n"
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"Valid options:\n"
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" -h : display this usage information\n"
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" -n <name> : specify logo name (default: linux_logo)\n"
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" -o <output> : output to file <output> instead of stdout\n"
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" -t <type> : specify logo type, one of\n"
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" bmp : truecolour\n"
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"\n", programname);
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}
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int main(int argc, char *argv[])
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{
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int opt;
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programname = argv[0];
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opterr = 0;
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while (1) {
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opt = getopt(argc, argv, "hn:o:t:");
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if (opt == -1)
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break;
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switch (opt) {
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case 'h':
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usage();
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break;
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case 'n':
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logoname = optarg;
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break;
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case 'o':
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outputname = optarg;
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break;
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case 't':
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if (!strcmp(optarg, "bmp"))
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logo_type = LINUX_LOGO_bmp;
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else
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die("logo_type is wrong without bmp\n");
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break;
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default:
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usage();
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break;
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}
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}
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if (optind != argc-1)
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usage();
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filename = argv[optind];
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read_image();
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switch (logo_type) {
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case LINUX_LOGO_bmp:
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write_logo_bmp();
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break;
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default :
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die("logo_type is wrong\n");
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}
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exit(0);
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}
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