def test_dual_formats_one_right_one_wrong(self):
samples = [
0b010001111010110, # L0
0b011001000111101, # L4
0b000111101011001, # M3
0b001101110000101, # M6
0b110101100100011, # Q2
0b111010110010001, # Q5
0b100011110101100, # H1
0b101110000101001, # H7
]
for sample in samples:
self.assertEqual(sample >> 10, validate_format_info(sample, sample))
self.assertEqual(sample >> 10, validate_format_info(sample ^ 0b111100000000000, sample ^ 0b000100000011101))
def _read_format_information(self):
print('ImageScanner._read_format_information: {}'.format(
self._was_read))
'''
Read 5 data bits and 10 BCH bits
'''
# Read both locations
source_1 = (self._get_straight_bits(
(8, -7), 7, 'd') << 8) + self._get_straight_bits((-1, 8), 8, 'l')
source_2 = (self._get_straight_bits(
(7, 8), 8, 'l', (1, )) << 8) + self._get_straight_bits(
(8, 0), 9, 'd', (6, ))
print('FI1: ', source_1)
print('FI2: ', source_2)
# FORMAT_INFO_MASK = 0b101010000010010
format_info = validate_format_info(source_1 ^ FORMAT_INFO_MASK,
source_2 ^ FORMAT_INFO_MASK)
print('format information: {:b}'.format(format_info))
print('format information: {:b}'.format(format_info >> 3))
self.info.error_correction_level = ec_level_from_format_info_code(
format_info >> 3)
print('EC level: {}'.format(self.info.error_correction_level))
self.info.mask_id = format_info & 0b111
return
def _read_format_info(self):
source_1 = (self._get_straight_bits((8, -7), 7, 'd') << 8) + self._get_straight_bits((-1, 8), 8, 'l')
source_2 = (self._get_straight_bits((7, 8), 8, 'l', (1,)) << 8) + self._get_straight_bits((8, 0), 9, 'd', (6,))
format_info = validate_format_info(source_1 ^ FORMAT_INFO_MASK, source_2 ^ FORMAT_INFO_MASK)
self.info.error_correction_level = ec_level_from_format_info_code(format_info >> 3)
self.info.mask_id = format_info & 0b111
def test_dual_formats_one_right_one_wrong(self):
samples = [
0b010001111010110, # L0
0b011001000111101, # L4
0b000111101011001, # M3
0b001101110000101, # M6
0b110101100100011, # Q2
0b111010110010001, # Q5
0b100011110101100, # H1
0b101110000101001, # H7
]
for sample in samples:
self.assertEqual(sample >> 10,
validate_format_info(sample, sample))
self.assertEqual(
sample >> 10,
validate_format_info(sample ^ 0b111100000000000,
sample ^ 0b000100000011101))
def test_completely_wrong_format_info(self):
samples = [
0b010001111010110, # L0
0b011001000111101, # L4
0b000111101011001, # M3
0b001101110000101, # M6
0b110101100100011, # Q2
0b111010110010001, # Q5
0b100011110101100, # H1
0b101110000101001, # H7
]
for sample in samples:
self.assertNotEqual(sample >> 10, validate_format_info(sample ^ 0b111111000000000))
def test_completely_wrong_format_info(self):
samples = [
0b010001111010110, # L0
0b011001000111101, # L4
0b000111101011001, # M3
0b001101110000101, # M6
0b110101100100011, # Q2
0b111010110010001, # Q5
0b100011110101100, # H1
0b101110000101001, # H7
]
for sample in samples:
self.assertNotEqual(
sample >> 10, validate_format_info(sample ^ 0b111111000000000))
def test_validate_erroneous_format_info(self):
single_bit_error = [
(0b010011111010110, 0b01000), # L0
(0b011001010111101, 0b01100), # L4
(0b000111001011001, 0b00011), # M3
(0b001100110000101, 0b00110), # M6
]
double_bit_error = [
(0b110101101000011, 0b11010), # Q2
(0b111110110011001, 0b11101), # Q5
(0b101011110001100, 0b10001), # H1
(0b111110000111001, 0b10111), # H7
]
triple_bit_error = [
(0b110101101000010, 0b11010), # Q2
(0b111110110011000, 0b11101), # Q5
(0b101011110001101, 0b10001), # H1
(0b111110000111000, 0b10111), # H7
]
for sample, correct in single_bit_error + double_bit_error + triple_bit_error:
self.assertEqual(correct, validate_format_info(sample))
def test_validate_erroneous_format_info(self):
single_bit_error = [
(0b010011111010110, 0b01000), # L0
(0b011001010111101, 0b01100), # L4
(0b000111001011001, 0b00011), # M3
(0b001100110000101, 0b00110), # M6
]
double_bit_error = [
(0b110101101000011, 0b11010), # Q2
(0b111110110011001, 0b11101), # Q5
(0b101011110001100, 0b10001), # H1
(0b111110000111001, 0b10111), # H7
]
triple_bit_error = [
(0b110101101000010, 0b11010), # Q2
(0b111110110011000, 0b11101), # Q5
(0b101011110001101, 0b10001), # H1
(0b111110000111000, 0b10111), # H7
]
for sample, correct in single_bit_error + double_bit_error + triple_bit_error:
self.assertEqual(correct, validate_format_info(sample))
