#define swap_width 8
#define swap_height 15
static unsigned char swap_bits[] = {
  0x00, 0x00, 0x00, 0x06, 0x18, 0x60, 0x18, 0x06, 0x00, 0x60, 0x18, 0x06,
  0x18, 0x60, 0x00, };