#define test_mask_width 10
#define test_mask_height 8
static unsigned char test_mask_bits[] = {
   0xc0, 0x03, 0x78, 0x02, 0xfc, 0x00, 0x7a, 0x01, 0x32, 0x01, 0x7b, 0x03,
   0x79, 0x02, 0x02, 0x01};
