#define shuffle_width 9
#define shuffle_height 9
static unsigned char shuffle_bits[] = {
   0x00, 0x00, 0x00, 0x00, 0xe3, 0x01, 0x14, 0x00, 0x48, 0x00, 0xd4, 0x00,
   0xe3, 0x01, 0xc0, 0x00, 0x40, 0x00 };