QR_MODE_NUL = -1
QR_MODE_NUM = 0
QR_MODE_AN = 1
QR_MODE_8 = 2
QR_MODE_KANJI = 3
QR_MODE_STRUCTURE = 4
QR_ECLEVEL_L = 0
QR_ECLEVEL_M = 1
QR_ECLEVEL_Q = 2
QR_ECLEVEL_H = 3
QR_FORMAT_TEXT = 0
QR_FORMAT_PNG = 1
QR_CACHEABLE = false
QR_CACHE_DIR = false
QR_LOG_DIR = false
QR_FIND_BEST_MASK = true
QR_FIND_FROM_RANDOM = 2
QR_DEFAULT_MASK = 2
QR_PNG_MAXIMUM_SIZE = 1024
QRSPEC_VERSION_MAX = 40
QRSPEC_WIDTH_MAX = 177
QRCAP_WIDTH = 0
QRCAP_WORDS = 1
QRCAP_REMINDER = 2
QRCAP_EC = 3
QR_IMAGE = true
STRUCTURE_HEADER_BITS = 20
MAX_STRUCTURED_SYMBOLS = 16
N1 = 3
N2 = 3
N3 = 40
N4 = 10