#define test_mask_width 12
#define test_mask_height 21
static unsigned char test_mask_bits[] = {
   0x70, 0x00, 0xf0, 0x00, 0xf0, 0x07, 0xf0, 0x0d, 0xf3, 0x03, 0xe3, 0x03,
   0xe1, 0x00, 0xff, 0x01, 0xf8, 0x07, 0xe0, 0x05, 0xe0, 0x05, 0xf0, 0x0d,
   0xfe, 0x0d, 0xfe, 0x00, 0xc6, 0x00, 0xcc, 0x00, 0xd8, 0x00, 0x8c, 0x00,
   0x80, 0x01, 0x00, 0x01, 0xc0, 0x01};
