betty/font2b.c

   1 /*
   2  * font2b.c - convert linux console 8x8 font data to betty lcd ram layout
   3  *
   4  * author: hackbard@hackdaworld.org
   5  *
   6  * usage:
   7  *
   8  * first you have to adjust this file two times (see comments!)
   9  * don't forget to rebuild.
  10  *
  11  * ./font2b > default_font.h
  12  *
  13  * ONLY 8x8 FONTS SUPPORTED!
  14  *
  15  */
  16
  17 #define _GNU_SOURCE
  18 #include <stdio.h>
  19 #include <sys/types.h>
  20 #include <sys/stat.h>
  21 #include <fcntl.h>
  22 #include <unistd.h>
  23
  24 typedef unsigned int u32;
  25
  26 // put your font data here!
  27 #include "/usr/src/linux/drivers/video/console/font_pearl_8x8.c"
  28
  29 #define CHAR 1
  30 #define BINARY 2
  31
  32 int main(int argc,char **argv) {
  33
  34         unsigned char *font_data;
  35         int font,col,row;
  36         unsigned char buf;
  37         unsigned char stat;
  38         int fd=0;
  39
  40         // adjust the font data pointer here!
  41         font_data=(unsigned char *)fontdata_pearl8x8;
  42
  43         stat=CHAR;
  44         if(argc==2) {
  45                 fd=open(argv[1],O_WRONLY|O_CREAT);
  46                 if(fd<0) {
  47                         perror("file open");
  48                         return fd;
  49                 }
  50                 stat=BINARY;
  51         }
  52
  53         if(stat==CHAR)
  54                 printf("const unsigned char default_font[%d]={\n",256*8);
  55
  56         for(font=0;font<=0xff;font++) {
  57
  58                 /* print the font number */
  59                 if(stat==CHAR) {
  60                         printf("\t/* %d 0x%02x",font,font);
  61                         if((font>0x1f)&(font<0x7f))
  62                                 printf(" %c */\n",font);
  63                         else
  64                                 printf(" */\n");
  65                 }
  66
  67                 /* print the array content of the font */
  68                 for(col=0;col<8;col++) {
  69                         buf=0;
  70                         for(row=0;row<8;row++)
  71                                 buf|=(((font_data[font*8+row]>>(7-col))&1)<<row);
  72                         if(stat==CHAR) {
  73                                 if(col==0)
  74                                         printf("\t");
  75                                 printf("0x%02x",buf);
  76                                 if((font!=0xff)|(col!=7))
  77                                         printf(",");
  78                         }
  79                         else {
  80                                 write(fd,&buf,1);
  81                         }
  82                 }
  83                 if(stat==CHAR)
  84                         printf("\n");
  85         }
  86
  87         /* end */
  88         if(stat==CHAR)
  89                 printf("};\n");
  90         else
  91                 close(fd);
  92
  93         return 0;
  94 }