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44 lines
3.9 KiB
Python
44 lines
3.9 KiB
Python
# -*- coding: utf-8 -*-
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required_remainder_bits = (0,7,7,7,7,7,0,0,0,0,0,0,0,3,3,3,3,3,3,3,4,4,4,4,4,4,4,3,3,3,3,3,3,3,0,0,0,0,0,0)
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lindex = {'L':0, 'M':1, 'Q':2, 'H':3}
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# [
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# version1[
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# level1(num_of_group_1_blocks, DC_per_group_1_block, num_of_group_2_blocks, DC_per_group_2_block),
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# level2(..,..,..,..),
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# level3(..,..,..,..),
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# level4(..,..,..,..)
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# ],
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# version2[level1(..), level2(..), level3(..), level4(..)],
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# ...
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# ]
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grouping_list = [
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[(1, 19, 0, 0), (1, 16, 0, 0), (1, 13, 0, 0), (1, 9, 0, 0)], [(1, 34, 0, 0), (1, 28, 0, 0), (1, 22, 0, 0), (1, 16, 0, 0)], [(1, 55, 0, 0), (1, 44, 0, 0), (2, 17, 0, 0), (2, 13, 0, 0)], [(1, 80, 0, 0), (2, 32, 0, 0), (2, 24, 0, 0), (4, 9, 0, 0)], [(1, 108, 0, 0), (2, 43, 0, 0), (2, 15, 2, 16), (2, 11, 2, 12)], [(2, 68, 0, 0), (4, 27, 0, 0), (4, 19, 0, 0), (4, 15, 0, 0)], [(2, 78, 0, 0), (4, 31, 0, 0), (2, 14, 4, 15), (4, 13, 1, 14)], [(2, 97, 0, 0), (2, 38, 2, 39), (4, 18, 2, 19), (4, 14, 2, 15)], [(2, 116, 0, 0), (3, 36, 2, 37), (4, 16, 4, 17), (4, 12, 4, 13)], [(2, 68, 2, 69), (4, 43, 1, 44), (6, 19, 2, 20), (6, 15, 2, 16)], [(4, 81, 0, 0), (1, 50, 4, 51), (4, 22, 4, 23), (3, 12, 8, 13)], [(2, 92, 2, 93), (6, 36, 2, 37), (4, 20, 6, 21), (7, 14, 4, 15)], [(4, 107, 0, 0), (8, 37, 1, 38), (8, 20, 4, 21), (12, 11, 4, 12)], [(3, 115, 1, 116), (4, 40, 5, 41), (11, 16, 5, 17), (11, 12, 5, 13)], [(5, 87, 1, 88), (5, 41, 5, 42), (5, 24, 7, 25), (11, 12, 7, 13)], [(5, 98, 1, 99), (7, 45, 3, 46), (15, 19, 2, 20), (3, 15, 13, 16)], [(1, 107, 5, 108), (10, 46, 1, 47), (1, 22, 15, 23), (2, 14, 17, 15)], [(5, 120, 1, 121), (9, 43, 4, 44), (17, 22, 1, 23), (2, 14, 19, 15)], [(3, 113, 4, 114), (3, 44, 11, 45), (17, 21, 4, 22), (9, 13, 16, 14)], [(3, 107, 5, 108), (3, 41, 13, 42), (15, 24, 5, 25), (15, 15, 10, 16)], [(4, 116, 4, 117), (17, 42, 0, 0), (17, 22, 6, 23), (19, 16, 6, 17)], [(2, 111, 7, 112), (17, 46, 0, 0), (7, 24, 16, 25), (34, 13, 0, 0)], [(4, 121, 5, 122), (4, 47, 14, 48), (11, 24, 14, 25), (16, 15, 14, 16)], [(6, 117, 4, 118), (6, 45, 14, 46), (11, 24, 16, 25), (30, 16, 2, 17)], [(8, 106, 4, 107), (8, 47, 13, 48), (7, 24, 22, 25), (22, 15, 13, 16)], [(10, 114, 2, 115), (19, 46, 4, 47), (28, 22, 6, 23), (33, 16, 4, 17)], [(8, 122, 4, 123), (22, 45, 3, 46), (8, 23, 26, 24), (12, 15, 28, 16)], [(3, 117, 10, 118), (3, 45, 23, 46), (4, 24, 31, 25), (11, 15, 31, 16)], [(7, 116, 7, 117), (21, 45, 7, 46), (1, 23, 37, 24), (19, 15, 26, 16)], [(5, 115, 10, 116), (19, 47, 10, 48), (15, 24, 25, 25), (23, 15, 25, 16)], [(13, 115, 3, 116), (2, 46, 29, 47), (42, 24, 1, 25), (23, 15, 28, 16)], [(17, 115, 0, 0), (10, 46, 23, 47), (10, 24, 35, 25), (19, 15, 35, 16)], [(17, 115, 1, 116), (14, 46, 21, 47), (29, 24, 19, 25), (11, 15, 46, 16)], [(13, 115, 6, 116), (14, 46, 23, 47), (44, 24, 7, 25), (59, 16, 1, 17)], [(12, 121, 7, 122), (12, 47, 26, 48), (39, 24, 14, 25), (22, 15, 41, 16)], [(6, 121, 14, 122), (6, 47, 34, 48), (46, 24, 10, 25), (2, 15, 64, 16)], [(17, 122, 4, 123), (29, 46, 14, 47), (49, 24, 10, 25), (24, 15, 46, 16)], [(4, 122, 18, 123), (13, 46, 32, 47), (48, 24, 14, 25), (42, 15, 32, 16)], [(20, 117, 4, 118), (40, 47, 7, 48), (43, 24, 22, 25), (10, 15, 67, 16)], [(19, 118, 6, 119), (18, 47, 31, 48), (34, 24, 34, 25), (20, 15, 61, 16)]
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]
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def structure_final_bits(ver, ecl, data_codewords, ecc):
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final_message = interleave_dc(ver, ecl, data_codewords) + interleave_ecc(ecc)
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# convert to binary & Add Remainder Bits if Necessary
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final_bits = ''.join(['0'*(8-len(i))+i for i in [bin(i)[2:] for i in final_message]]) + '0' * required_remainder_bits[ver-1]
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return final_bits
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def interleave_dc(ver, ecl, data_codewords):
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id = []
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for t in zip(*data_codewords):
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id += list(t)
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g = grouping_list[ver-1][lindex[ecl]]
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if g[3]:
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for i in range(g[2]):
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id.append(data_codewords[i-g[2]][-1])
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return id
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def interleave_ecc(ecc):
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ie = []
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for t in zip(*ecc):
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ie += list(t)
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return ie |