#define rotr_width 16
#define rotr_height 16
static unsigned char rotr_bits[] = {
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0, 0x07, 0xfc, 0x3f,
   0x1e, 0x78, 0x03, 0xc0, 0x03, 0x81, 0xc2, 0xc0, 0x60, 0x78, 0xf0, 0x3f,
   0xe0, 0x07, 0x40, 0x00, 0x80, 0x00, 0x00, 0x00};