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 // put your font data here!
  25 #include "/usr/src/linux/drivers/video/console/font_pearl_8x8.c"
  26
  27 #define CHAR 1
  28 #define BINARY 2
  29
  30 int main(int argc,char **argv) {
  31
  32         unsigned char *font_data;
  33         int font,col,row;
  34         unsigned char buf;
  35         unsigned char stat;
  36         int fd=0;
  37
  38         // adjust the font data pointer here!
  39         font_data=(unsigned char *)fontdata_pearl8x8;
  40
  41         stat=CHAR;
  42         if(argc==2) {
  43                 fd=open(argv[1],O_WRONLY|O_CREAT);
  44                 if(fd<0) {
  45                         perror("file open");
  46                         return fd;
  47                 }
  48                 stat=BINARY;
  49         }
  50
  51         if(stat==CHAR)
  52                 printf("const unsigned char default_font[%d]={\n",256*8*2);
  53
  54         for(font=0;font<=0xff;font++) {
  55
  56                 /* print the font number */
  57                 if(stat==CHAR) {
  58                         printf("\t/* %d 0x%02x",font,font);
  59                         if((font>0x1f)&(font<0x7f))
  60                                 printf(" %c */\n",font);
  61                         else
  62                                 printf(" */\n");
  63                 }
  64
  65                 /* print the array content of the font */
  66                 for(col=0;col<8;col++) {
  67                         buf=0;
  68                         for(row=0;row<8;row++)
  69                                 buf|=(font_data[font*8+row]&(1<<(7-col)));
  70                         if(stat==CHAR) {
  71                                 if(!(col%4))
  72                                         printf("\t");
  73                                 printf("0x%02x,0x%02x",buf,buf);
  74                                 if((font!=0xff)|(col!=7))
  75                                         printf(",");
  76                                 if(col==3)
  77                                         printf("\n");
  78                         }
  79                         else {
  80                                 write(fd,&buf,1);
  81                                 write(fd,&buf,1);
  82                         }
  83                 }
  84                 if(stat==CHAR)
  85                         printf("\n");
  86         }
  87
  88         /* end */
  89         if(stat==CHAR)
  90                 printf("};\n");
  91         else
  92                 close(fd);
  93
  94         return 0;
  95 }