Add CP437 8x8 font

src/utils/bmp2font.c

@@ -0,0 +1,45 @@
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <sys/mman.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <errno.h>
+
+FILE* in;
+FILE* out;
+void *addr;
+
+void copyline(int c) {
+  uint8_t *ptr = addr + 0x82 + (128/8)*(127 - c);
+  int i;
+  for (i=0; i<16; i++) {
+    fputc(*ptr++, out);
+  }
+}
+
+int main(int argc, char** argv) {
+  struct stat sbuf;
+
+  in = fopen(argv[1], "r+");
+  out = fopen(argv[2], "w");
+
+  fstat(fileno(in), &sbuf);
+
+  if (sbuf.st_size != 2178) {
+    printf("File must be a 128x128 pixel 1 bit monochrome bmp\n");
+    exit(1);
+  }
+
+  addr = mmap(NULL, sbuf.st_size, PROT_READ | PROT_WRITE, MAP_SHARED, fileno(in), 0);
+
+  int i, j;
+  for(j=0; j<8; j++) {
+    for(i=0; i<16; i++) {
+      copyline(j+i*8);
+    }
+  }
+}