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@@ -1,872 +0,0 @@
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-!(function() {
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-
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- // alignment pattern
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- var adelta = [
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- 0, 11, 15, 19, 23, 27, 31,
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- 16, 18, 20, 22, 24, 26, 28, 20, 22, 24, 24, 26, 28, 28, 22, 24, 24,
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- 26, 26, 28, 28, 24, 24, 26, 26, 26, 28, 28, 24, 26, 26, 26, 28, 28
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- ];
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-
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- // version block
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- var vpat = [
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- 0xc94, 0x5bc, 0xa99, 0x4d3, 0xbf6, 0x762, 0x847, 0x60d,
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- 0x928, 0xb78, 0x45d, 0xa17, 0x532, 0x9a6, 0x683, 0x8c9,
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- 0x7ec, 0xec4, 0x1e1, 0xfab, 0x08e, 0xc1a, 0x33f, 0xd75,
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- 0x250, 0x9d5, 0x6f0, 0x8ba, 0x79f, 0xb0b, 0x42e, 0xa64,
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- 0x541, 0xc69
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- ];
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-
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- // final format bits with mask: level << 3 | mask
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- var fmtword = [
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- 0x77c4, 0x72f3, 0x7daa, 0x789d, 0x662f, 0x6318, 0x6c41, 0x6976, //L
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- 0x5412, 0x5125, 0x5e7c, 0x5b4b, 0x45f9, 0x40ce, 0x4f97, 0x4aa0, //M
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- 0x355f, 0x3068, 0x3f31, 0x3a06, 0x24b4, 0x2183, 0x2eda, 0x2bed, //Q
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- 0x1689, 0x13be, 0x1ce7, 0x19d0, 0x0762, 0x0255, 0x0d0c, 0x083b //H
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- ];
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-
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- // 4 per version: number of blocks 1,2; data width; ecc width
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- var eccblocks = [
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- 1, 0, 19, 7, 1, 0, 16, 10, 1, 0, 13, 13, 1, 0, 9, 17,
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- 1, 0, 34, 10, 1, 0, 28, 16, 1, 0, 22, 22, 1, 0, 16, 28,
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- 1, 0, 55, 15, 1, 0, 44, 26, 2, 0, 17, 18, 2, 0, 13, 22,
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- 1, 0, 80, 20, 2, 0, 32, 18, 2, 0, 24, 26, 4, 0, 9, 16,
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- 1, 0, 108, 26, 2, 0, 43, 24, 2, 2, 15, 18, 2, 2, 11, 22,
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- 2, 0, 68, 18, 4, 0, 27, 16, 4, 0, 19, 24, 4, 0, 15, 28,
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- 2, 0, 78, 20, 4, 0, 31, 18, 2, 4, 14, 18, 4, 1, 13, 26,
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- 2, 0, 97, 24, 2, 2, 38, 22, 4, 2, 18, 22, 4, 2, 14, 26,
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- 2, 0, 116, 30, 3, 2, 36, 22, 4, 4, 16, 20, 4, 4, 12, 24,
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- 2, 2, 68, 18, 4, 1, 43, 26, 6, 2, 19, 24, 6, 2, 15, 28,
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- 4, 0, 81, 20, 1, 4, 50, 30, 4, 4, 22, 28, 3, 8, 12, 24,
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- 2, 2, 92, 24, 6, 2, 36, 22, 4, 6, 20, 26, 7, 4, 14, 28,
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- 4, 0, 107, 26, 8, 1, 37, 22, 8, 4, 20, 24, 12, 4, 11, 22,
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- 3, 1, 115, 30, 4, 5, 40, 24, 11, 5, 16, 20, 11, 5, 12, 24,
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- 5, 1, 87, 22, 5, 5, 41, 24, 5, 7, 24, 30, 11, 7, 12, 24,
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- 5, 1, 98, 24, 7, 3, 45, 28, 15, 2, 19, 24, 3, 13, 15, 30,
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- 1, 5, 107, 28, 10, 1, 46, 28, 1, 15, 22, 28, 2, 17, 14, 28,
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- 5, 1, 120, 30, 9, 4, 43, 26, 17, 1, 22, 28, 2, 19, 14, 28,
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- 3, 4, 113, 28, 3, 11, 44, 26, 17, 4, 21, 26, 9, 16, 13, 26,
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- 3, 5, 107, 28, 3, 13, 41, 26, 15, 5, 24, 30, 15, 10, 15, 28,
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- 4, 4, 116, 28, 17, 0, 42, 26, 17, 6, 22, 28, 19, 6, 16, 30,
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- 2, 7, 111, 28, 17, 0, 46, 28, 7, 16, 24, 30, 34, 0, 13, 24,
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- 4, 5, 121, 30, 4, 14, 47, 28, 11, 14, 24, 30, 16, 14, 15, 30,
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- 6, 4, 117, 30, 6, 14, 45, 28, 11, 16, 24, 30, 30, 2, 16, 30,
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- 8, 4, 106, 26, 8, 13, 47, 28, 7, 22, 24, 30, 22, 13, 15, 30,
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- 10, 2, 114, 28, 19, 4, 46, 28, 28, 6, 22, 28, 33, 4, 16, 30,
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- 8, 4, 122, 30, 22, 3, 45, 28, 8, 26, 23, 30, 12, 28, 15, 30,
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- 3, 10, 117, 30, 3, 23, 45, 28, 4, 31, 24, 30, 11, 31, 15, 30,
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- 7, 7, 116, 30, 21, 7, 45, 28, 1, 37, 23, 30, 19, 26, 15, 30,
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- 5, 10, 115, 30, 19, 10, 47, 28, 15, 25, 24, 30, 23, 25, 15, 30,
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- 13, 3, 115, 30, 2, 29, 46, 28, 42, 1, 24, 30, 23, 28, 15, 30,
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- 17, 0, 115, 30, 10, 23, 46, 28, 10, 35, 24, 30, 19, 35, 15, 30,
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- 17, 1, 115, 30, 14, 21, 46, 28, 29, 19, 24, 30, 11, 46, 15, 30,
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- 13, 6, 115, 30, 14, 23, 46, 28, 44, 7, 24, 30, 59, 1, 16, 30,
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- 12, 7, 121, 30, 12, 26, 47, 28, 39, 14, 24, 30, 22, 41, 15, 30,
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- 6, 14, 121, 30, 6, 34, 47, 28, 46, 10, 24, 30, 2, 64, 15, 30,
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- 17, 4, 122, 30, 29, 14, 46, 28, 49, 10, 24, 30, 24, 46, 15, 30,
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- 4, 18, 122, 30, 13, 32, 46, 28, 48, 14, 24, 30, 42, 32, 15, 30,
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- 20, 4, 117, 30, 40, 7, 47, 28, 43, 22, 24, 30, 10, 67, 15, 30,
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- 19, 6, 118, 30, 18, 31, 47, 28, 34, 34, 24, 30, 20, 61, 15, 30
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- ];
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-
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- // Galois field log table
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- var glog = [
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- 0xff, 0x00, 0x01, 0x19, 0x02, 0x32, 0x1a, 0xc6, 0x03, 0xdf, 0x33, 0xee, 0x1b, 0x68, 0xc7, 0x4b,
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- 0x04, 0x64, 0xe0, 0x0e, 0x34, 0x8d, 0xef, 0x81, 0x1c, 0xc1, 0x69, 0xf8, 0xc8, 0x08, 0x4c, 0x71,
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- 0x05, 0x8a, 0x65, 0x2f, 0xe1, 0x24, 0x0f, 0x21, 0x35, 0x93, 0x8e, 0xda, 0xf0, 0x12, 0x82, 0x45,
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- 0x1d, 0xb5, 0xc2, 0x7d, 0x6a, 0x27, 0xf9, 0xb9, 0xc9, 0x9a, 0x09, 0x78, 0x4d, 0xe4, 0x72, 0xa6,
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- 0x06, 0xbf, 0x8b, 0x62, 0x66, 0xdd, 0x30, 0xfd, 0xe2, 0x98, 0x25, 0xb3, 0x10, 0x91, 0x22, 0x88,
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- 0x36, 0xd0, 0x94, 0xce, 0x8f, 0x96, 0xdb, 0xbd, 0xf1, 0xd2, 0x13, 0x5c, 0x83, 0x38, 0x46, 0x40,
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- 0x1e, 0x42, 0xb6, 0xa3, 0xc3, 0x48, 0x7e, 0x6e, 0x6b, 0x3a, 0x28, 0x54, 0xfa, 0x85, 0xba, 0x3d,
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- 0xca, 0x5e, 0x9b, 0x9f, 0x0a, 0x15, 0x79, 0x2b, 0x4e, 0xd4, 0xe5, 0xac, 0x73, 0xf3, 0xa7, 0x57,
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- 0x07, 0x70, 0xc0, 0xf7, 0x8c, 0x80, 0x63, 0x0d, 0x67, 0x4a, 0xde, 0xed, 0x31, 0xc5, 0xfe, 0x18,
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- 0xe3, 0xa5, 0x99, 0x77, 0x26, 0xb8, 0xb4, 0x7c, 0x11, 0x44, 0x92, 0xd9, 0x23, 0x20, 0x89, 0x2e,
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- 0x37, 0x3f, 0xd1, 0x5b, 0x95, 0xbc, 0xcf, 0xcd, 0x90, 0x87, 0x97, 0xb2, 0xdc, 0xfc, 0xbe, 0x61,
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- 0xf2, 0x56, 0xd3, 0xab, 0x14, 0x2a, 0x5d, 0x9e, 0x84, 0x3c, 0x39, 0x53, 0x47, 0x6d, 0x41, 0xa2,
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- 0x1f, 0x2d, 0x43, 0xd8, 0xb7, 0x7b, 0xa4, 0x76, 0xc4, 0x17, 0x49, 0xec, 0x7f, 0x0c, 0x6f, 0xf6,
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- 0x6c, 0xa1, 0x3b, 0x52, 0x29, 0x9d, 0x55, 0xaa, 0xfb, 0x60, 0x86, 0xb1, 0xbb, 0xcc, 0x3e, 0x5a,
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- 0xcb, 0x59, 0x5f, 0xb0, 0x9c, 0xa9, 0xa0, 0x51, 0x0b, 0xf5, 0x16, 0xeb, 0x7a, 0x75, 0x2c, 0xd7,
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- 0x4f, 0xae, 0xd5, 0xe9, 0xe6, 0xe7, 0xad, 0xe8, 0x74, 0xd6, 0xf4, 0xea, 0xa8, 0x50, 0x58, 0xaf
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- ];
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-
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- // Galios field exponent table
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- var gexp = [
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- 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1d, 0x3a, 0x74, 0xe8, 0xcd, 0x87, 0x13, 0x26,
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- 0x4c, 0x98, 0x2d, 0x5a, 0xb4, 0x75, 0xea, 0xc9, 0x8f, 0x03, 0x06, 0x0c, 0x18, 0x30, 0x60, 0xc0,
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- 0x9d, 0x27, 0x4e, 0x9c, 0x25, 0x4a, 0x94, 0x35, 0x6a, 0xd4, 0xb5, 0x77, 0xee, 0xc1, 0x9f, 0x23,
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- 0x46, 0x8c, 0x05, 0x0a, 0x14, 0x28, 0x50, 0xa0, 0x5d, 0xba, 0x69, 0xd2, 0xb9, 0x6f, 0xde, 0xa1,
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- 0x5f, 0xbe, 0x61, 0xc2, 0x99, 0x2f, 0x5e, 0xbc, 0x65, 0xca, 0x89, 0x0f, 0x1e, 0x3c, 0x78, 0xf0,
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- 0xfd, 0xe7, 0xd3, 0xbb, 0x6b, 0xd6, 0xb1, 0x7f, 0xfe, 0xe1, 0xdf, 0xa3, 0x5b, 0xb6, 0x71, 0xe2,
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- 0xd9, 0xaf, 0x43, 0x86, 0x11, 0x22, 0x44, 0x88, 0x0d, 0x1a, 0x34, 0x68, 0xd0, 0xbd, 0x67, 0xce,
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- 0x81, 0x1f, 0x3e, 0x7c, 0xf8, 0xed, 0xc7, 0x93, 0x3b, 0x76, 0xec, 0xc5, 0x97, 0x33, 0x66, 0xcc,
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- 0x85, 0x17, 0x2e, 0x5c, 0xb8, 0x6d, 0xda, 0xa9, 0x4f, 0x9e, 0x21, 0x42, 0x84, 0x15, 0x2a, 0x54,
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- 0xa8, 0x4d, 0x9a, 0x29, 0x52, 0xa4, 0x55, 0xaa, 0x49, 0x92, 0x39, 0x72, 0xe4, 0xd5, 0xb7, 0x73,
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- 0xe6, 0xd1, 0xbf, 0x63, 0xc6, 0x91, 0x3f, 0x7e, 0xfc, 0xe5, 0xd7, 0xb3, 0x7b, 0xf6, 0xf1, 0xff,
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- 0xe3, 0xdb, 0xab, 0x4b, 0x96, 0x31, 0x62, 0xc4, 0x95, 0x37, 0x6e, 0xdc, 0xa5, 0x57, 0xae, 0x41,
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- 0x82, 0x19, 0x32, 0x64, 0xc8, 0x8d, 0x07, 0x0e, 0x1c, 0x38, 0x70, 0xe0, 0xdd, 0xa7, 0x53, 0xa6,
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- 0x51, 0xa2, 0x59, 0xb2, 0x79, 0xf2, 0xf9, 0xef, 0xc3, 0x9b, 0x2b, 0x56, 0xac, 0x45, 0x8a, 0x09,
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- 0x12, 0x24, 0x48, 0x90, 0x3d, 0x7a, 0xf4, 0xf5, 0xf7, 0xf3, 0xfb, 0xeb, 0xcb, 0x8b, 0x0b, 0x16,
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- 0x2c, 0x58, 0xb0, 0x7d, 0xfa, 0xe9, 0xcf, 0x83, 0x1b, 0x36, 0x6c, 0xd8, 0xad, 0x47, 0x8e, 0x00
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- ];
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-
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- // Working buffers:
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- // data input and ecc append, image working buffer, fixed part of image, run lengths for badness
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- var strinbuf = [],
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- eccbuf = [],
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- qrframe = [],
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- framask = [],
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- rlens = [];
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- // Control values - width is based on version, last 4 are from table.
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- var version, width, neccblk1, neccblk2, datablkw, eccblkwid;
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- var ecclevel = 2;
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- // set bit to indicate cell in qrframe is immutable. symmetric around diagonal
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- function setmask(x, y) {
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- var bt;
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- if (x > y) {
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- bt = x;
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- x = y;
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- y = bt;
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- }
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- // y*y = 1+3+5...
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- bt = y;
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- bt *= y;
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- bt += y;
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- bt >>= 1;
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- bt += x;
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- framask[bt] = 1;
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- }
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-
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- // enter alignment pattern - black to qrframe, white to mask (later black frame merged to mask)
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- function putalign(x, y) {
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- var j;
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-
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- qrframe[x + width * y] = 1;
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- for (j = -2; j < 2; j++) {
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- qrframe[(x + j) + width * (y - 2)] = 1;
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- qrframe[(x - 2) + width * (y + j + 1)] = 1;
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- qrframe[(x + 2) + width * (y + j)] = 1;
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- qrframe[(x + j + 1) + width * (y + 2)] = 1;
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- }
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- for (j = 0; j < 2; j++) {
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- setmask(x - 1, y + j);
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- setmask(x + 1, y - j);
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- setmask(x - j, y - 1);
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- setmask(x + j, y + 1);
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- }
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- }
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-
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- //========================================================================
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- // Reed Solomon error correction
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- // exponentiation mod N
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- function modnn(x) {
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- while (x >= 255) {
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- x -= 255;
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- x = (x >> 8) + (x & 255);
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- }
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- return x;
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- }
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-
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- var genpoly = [];
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-
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- // Calculate and append ECC data to data block. Block is in strinbuf, indexes to buffers given.
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- function appendrs(data, dlen, ecbuf, eclen) {
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- var i, j, fb;
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-
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- for (i = 0; i < eclen; i++)
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- strinbuf[ecbuf + i] = 0;
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- for (i = 0; i < dlen; i++) {
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- fb = glog[strinbuf[data + i] ^ strinbuf[ecbuf]];
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- if (fb != 255) /* fb term is non-zero */
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- for (j = 1; j < eclen; j++)
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- strinbuf[ecbuf + j - 1] = strinbuf[ecbuf + j] ^ gexp[modnn(fb + genpoly[eclen - j])];
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- else
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- for (j = ecbuf; j < ecbuf + eclen; j++)
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- strinbuf[j] = strinbuf[j + 1];
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- strinbuf[ecbuf + eclen - 1] = fb == 255 ? 0 : gexp[modnn(fb + genpoly[0])];
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- }
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- }
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-
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- //========================================================================
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- // Frame data insert following the path rules
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-
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- // check mask - since symmetrical use half.
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- function ismasked(x, y) {
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- var bt;
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- if (x > y) {
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- bt = x;
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- x = y;
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- y = bt;
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- }
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- bt = y;
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- bt += y * y;
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- bt >>= 1;
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- bt += x;
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- return framask[bt];
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- }
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-
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- //========================================================================
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- // Apply the selected mask out of the 8.
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- function applymask(m) {
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- var x, y, r3x, r3y;
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-
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- switch (m) {
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- case 0:
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- for (y = 0; y < width; y++)
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- for (x = 0; x < width; x++)
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- if (!((x + y) & 1) && !ismasked(x, y))
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- qrframe[x + y * width] ^= 1;
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- break;
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- case 1:
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- for (y = 0; y < width; y++)
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- for (x = 0; x < width; x++)
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- if (!(y & 1) && !ismasked(x, y))
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- qrframe[x + y * width] ^= 1;
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- break;
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- case 2:
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- for (y = 0; y < width; y++)
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- for (r3x = 0, x = 0; x < width; x++, r3x++) {
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- if (r3x == 3)
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- r3x = 0;
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- if (!r3x && !ismasked(x, y))
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- qrframe[x + y * width] ^= 1;
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- }
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- break;
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- case 3:
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- for (r3y = 0, y = 0; y < width; y++, r3y++) {
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- if (r3y == 3)
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- r3y = 0;
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- for (r3x = r3y, x = 0; x < width; x++, r3x++) {
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- if (r3x == 3)
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- r3x = 0;
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- if (!r3x && !ismasked(x, y))
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- qrframe[x + y * width] ^= 1;
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- }
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- }
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- break;
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- case 4:
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- for (y = 0; y < width; y++)
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- for (r3x = 0, r3y = ((y >> 1) & 1), x = 0; x < width; x++, r3x++) {
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- if (r3x == 3) {
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- r3x = 0;
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- r3y = !r3y;
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- }
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- if (!r3y && !ismasked(x, y))
|
|
|
- qrframe[x + y * width] ^= 1;
|
|
|
- }
|
|
|
- break;
|
|
|
- case 5:
|
|
|
- for (r3y = 0, y = 0; y < width; y++, r3y++) {
|
|
|
- if (r3y == 3)
|
|
|
- r3y = 0;
|
|
|
- for (r3x = 0, x = 0; x < width; x++, r3x++) {
|
|
|
- if (r3x == 3)
|
|
|
- r3x = 0;
|
|
|
- if (!((x & y & 1) + !(!r3x | !r3y)) && !ismasked(x, y))
|
|
|
- qrframe[x + y * width] ^= 1;
|
|
|
- }
|
|
|
- }
|
|
|
- break;
|
|
|
- case 6:
|
|
|
- for (r3y = 0, y = 0; y < width; y++, r3y++) {
|
|
|
- if (r3y == 3)
|
|
|
- r3y = 0;
|
|
|
- for (r3x = 0, x = 0; x < width; x++, r3x++) {
|
|
|
- if (r3x == 3)
|
|
|
- r3x = 0;
|
|
|
- if (!(((x & y & 1) + (r3x && (r3x == r3y))) & 1) && !ismasked(x, y))
|
|
|
- qrframe[x + y * width] ^= 1;
|
|
|
- }
|
|
|
- }
|
|
|
- break;
|
|
|
- case 7:
|
|
|
- for (r3y = 0, y = 0; y < width; y++, r3y++) {
|
|
|
- if (r3y == 3)
|
|
|
- r3y = 0;
|
|
|
- for (r3x = 0, x = 0; x < width; x++, r3x++) {
|
|
|
- if (r3x == 3)
|
|
|
- r3x = 0;
|
|
|
- if (!(((r3x && (r3x == r3y)) + ((x + y) & 1)) & 1) && !ismasked(x, y))
|
|
|
- qrframe[x + y * width] ^= 1;
|
|
|
- }
|
|
|
- }
|
|
|
- break;
|
|
|
- }
|
|
|
- return;
|
|
|
- }
|
|
|
-
|
|
|
- // Badness coefficients.
|
|
|
- var N1 = 3,
|
|
|
- N2 = 3,
|
|
|
- N3 = 40,
|
|
|
- N4 = 10;
|
|
|
-
|
|
|
- // Using the table of the length of each run, calculate the amount of bad image
|
|
|
- // - long runs or those that look like finders; called twice, once each for X and Y
|
|
|
- function badruns(length) {
|
|
|
- var i;
|
|
|
- var runsbad = 0;
|
|
|
- for (i = 0; i <= length; i++)
|
|
|
- if (rlens[i] >= 5)
|
|
|
- runsbad += N1 + rlens[i] - 5;
|
|
|
- // BwBBBwB as in finder
|
|
|
- for (i = 3; i < length - 1; i += 2)
|
|
|
- if (rlens[i - 2] == rlens[i + 2] &&
|
|
|
- rlens[i + 2] == rlens[i - 1] &&
|
|
|
- rlens[i - 1] == rlens[i + 1] &&
|
|
|
- rlens[i - 1] * 3 == rlens[i]
|
|
|
- // white around the black pattern? Not part of spec
|
|
|
- &&
|
|
|
- (rlens[i - 3] == 0 // beginning
|
|
|
- ||
|
|
|
- i + 3 > length // end
|
|
|
- ||
|
|
|
- rlens[i - 3] * 3 >= rlens[i] * 4 || rlens[i + 3] * 3 >= rlens[i] * 4)
|
|
|
- )
|
|
|
- runsbad += N3;
|
|
|
- return runsbad;
|
|
|
- }
|
|
|
-
|
|
|
- // Calculate how bad the masked image is - blocks, imbalance, runs, or finders.
|
|
|
- function badcheck() {
|
|
|
- var x, y, h, b, b1;
|
|
|
- var thisbad = 0;
|
|
|
- var bw = 0;
|
|
|
-
|
|
|
- // blocks of same color.
|
|
|
- for (y = 0; y < width - 1; y++)
|
|
|
- for (x = 0; x < width - 1; x++)
|
|
|
- if ((qrframe[x + width * y] && qrframe[(x + 1) + width * y] &&
|
|
|
- qrframe[x + width * (y + 1)] && qrframe[(x + 1) + width * (y + 1)]) // all black
|
|
|
- ||
|
|
|
- !(qrframe[x + width * y] || qrframe[(x + 1) + width * y] ||
|
|
|
- qrframe[x + width * (y + 1)] || qrframe[(x + 1) + width * (y + 1)])) // all white
|
|
|
- thisbad += N2;
|
|
|
-
|
|
|
- // X runs
|
|
|
- for (y = 0; y < width; y++) {
|
|
|
- rlens[0] = 0;
|
|
|
- for (h = b = x = 0; x < width; x++) {
|
|
|
- if ((b1 = qrframe[x + width * y]) == b)
|
|
|
- rlens[h]++;
|
|
|
- else
|
|
|
- rlens[++h] = 1;
|
|
|
- b = b1;
|
|
|
- bw += b ? 1 : -1;
|
|
|
- }
|
|
|
- thisbad += badruns(h);
|
|
|
- }
|
|
|
-
|
|
|
- // black/white imbalance
|
|
|
- if (bw < 0)
|
|
|
- bw = -bw;
|
|
|
-
|
|
|
- var big = bw;
|
|
|
- var count = 0;
|
|
|
- big += big << 2;
|
|
|
- big <<= 1;
|
|
|
- while (big > width * width)
|
|
|
- big -= width * width, count++;
|
|
|
- thisbad += count * N4;
|
|
|
-
|
|
|
- // Y runs
|
|
|
- for (x = 0; x < width; x++) {
|
|
|
- rlens[0] = 0;
|
|
|
- for (h = b = y = 0; y < width; y++) {
|
|
|
- if ((b1 = qrframe[x + width * y]) == b)
|
|
|
- rlens[h]++;
|
|
|
- else
|
|
|
- rlens[++h] = 1;
|
|
|
- b = b1;
|
|
|
- }
|
|
|
- thisbad += badruns(h);
|
|
|
- }
|
|
|
- return thisbad;
|
|
|
- }
|
|
|
-
|
|
|
- function genframe(instring) {
|
|
|
- var x, y, k, t, v, i, j, m;
|
|
|
-
|
|
|
- // find the smallest version that fits the string
|
|
|
- t = instring.length;
|
|
|
- version = 0;
|
|
|
- do {
|
|
|
- version++;
|
|
|
- k = (ecclevel - 1) * 4 + (version - 1) * 16;
|
|
|
- neccblk1 = eccblocks[k++];
|
|
|
- neccblk2 = eccblocks[k++];
|
|
|
- datablkw = eccblocks[k++];
|
|
|
- eccblkwid = eccblocks[k];
|
|
|
- k = datablkw * (neccblk1 + neccblk2) + neccblk2 - 3 + (version <= 9);
|
|
|
- if (t <= k)
|
|
|
- break;
|
|
|
- } while (version < 40);
|
|
|
-
|
|
|
- // FIXME - insure that it fits insted of being truncated
|
|
|
- width = 17 + 4 * version;
|
|
|
-
|
|
|
- // allocate, clear and setup data structures
|
|
|
- v = datablkw + (datablkw + eccblkwid) * (neccblk1 + neccblk2) + neccblk2;
|
|
|
- for (t = 0; t < v; t++)
|
|
|
- eccbuf[t] = 0;
|
|
|
- strinbuf = instring.slice(0);
|
|
|
-
|
|
|
- for (t = 0; t < width * width; t++)
|
|
|
- qrframe[t] = 0;
|
|
|
-
|
|
|
- for (t = 0; t < (width * (width + 1) + 1) / 2; t++)
|
|
|
- framask[t] = 0;
|
|
|
-
|
|
|
- // insert finders - black to frame, white to mask
|
|
|
- for (t = 0; t < 3; t++) {
|
|
|
- k = 0;
|
|
|
- y = 0;
|
|
|
- if (t == 1)
|
|
|
- k = (width - 7);
|
|
|
- if (t == 2)
|
|
|
- y = (width - 7);
|
|
|
- qrframe[(y + 3) + width * (k + 3)] = 1;
|
|
|
- for (x = 0; x < 6; x++) {
|
|
|
- qrframe[(y + x) + width * k] = 1;
|
|
|
- qrframe[y + width * (k + x + 1)] = 1;
|
|
|
- qrframe[(y + 6) + width * (k + x)] = 1;
|
|
|
- qrframe[(y + x + 1) + width * (k + 6)] = 1;
|
|
|
- }
|
|
|
- for (x = 1; x < 5; x++) {
|
|
|
- setmask(y + x, k + 1);
|
|
|
- setmask(y + 1, k + x + 1);
|
|
|
- setmask(y + 5, k + x);
|
|
|
- setmask(y + x + 1, k + 5);
|
|
|
- }
|
|
|
- for (x = 2; x < 4; x++) {
|
|
|
- qrframe[(y + x) + width * (k + 2)] = 1;
|
|
|
- qrframe[(y + 2) + width * (k + x + 1)] = 1;
|
|
|
- qrframe[(y + 4) + width * (k + x)] = 1;
|
|
|
- qrframe[(y + x + 1) + width * (k + 4)] = 1;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- // alignment blocks
|
|
|
- if (version > 1) {
|
|
|
- t = adelta[version];
|
|
|
- y = width - 7;
|
|
|
- for (;;) {
|
|
|
- x = width - 7;
|
|
|
- while (x > t - 3) {
|
|
|
- putalign(x, y);
|
|
|
- if (x < t)
|
|
|
- break;
|
|
|
- x -= t;
|
|
|
- }
|
|
|
- if (y <= t + 9)
|
|
|
- break;
|
|
|
- y -= t;
|
|
|
- putalign(6, y);
|
|
|
- putalign(y, 6);
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- // single black
|
|
|
- qrframe[8 + width * (width - 8)] = 1;
|
|
|
-
|
|
|
- // timing gap - mask only
|
|
|
- for (y = 0; y < 7; y++) {
|
|
|
- setmask(7, y);
|
|
|
- setmask(width - 8, y);
|
|
|
- setmask(7, y + width - 7);
|
|
|
- }
|
|
|
- for (x = 0; x < 8; x++) {
|
|
|
- setmask(x, 7);
|
|
|
- setmask(x + width - 8, 7);
|
|
|
- setmask(x, width - 8);
|
|
|
- }
|
|
|
-
|
|
|
- // reserve mask-format area
|
|
|
- for (x = 0; x < 9; x++)
|
|
|
- setmask(x, 8);
|
|
|
- for (x = 0; x < 8; x++) {
|
|
|
- setmask(x + width - 8, 8);
|
|
|
- setmask(8, x);
|
|
|
- }
|
|
|
- for (y = 0; y < 7; y++)
|
|
|
- setmask(8, y + width - 7);
|
|
|
-
|
|
|
- // timing row/col
|
|
|
- for (x = 0; x < width - 14; x++)
|
|
|
- if (x & 1) {
|
|
|
- setmask(8 + x, 6);
|
|
|
- setmask(6, 8 + x);
|
|
|
- }
|
|
|
- else {
|
|
|
- qrframe[(8 + x) + width * 6] = 1;
|
|
|
- qrframe[6 + width * (8 + x)] = 1;
|
|
|
- }
|
|
|
-
|
|
|
- // version block
|
|
|
- if (version > 6) {
|
|
|
- t = vpat[version - 7];
|
|
|
- k = 17;
|
|
|
- for (x = 0; x < 6; x++)
|
|
|
- for (y = 0; y < 3; y++, k--)
|
|
|
- if (1 & (k > 11 ? version >> (k - 12) : t >> k)) {
|
|
|
- qrframe[(5 - x) + width * (2 - y + width - 11)] = 1;
|
|
|
- qrframe[(2 - y + width - 11) + width * (5 - x)] = 1;
|
|
|
- }
|
|
|
- else {
|
|
|
- setmask(5 - x, 2 - y + width - 11);
|
|
|
- setmask(2 - y + width - 11, 5 - x);
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- // sync mask bits - only set above for white spaces, so add in black bits
|
|
|
- for (y = 0; y < width; y++)
|
|
|
- for (x = 0; x <= y; x++)
|
|
|
- if (qrframe[x + width * y])
|
|
|
- setmask(x, y);
|
|
|
-
|
|
|
- // convert string to bitstream
|
|
|
- // 8 bit data to QR-coded 8 bit data (numeric or alphanum, or kanji not supported)
|
|
|
- v = strinbuf.length;
|
|
|
-
|
|
|
- // string to array
|
|
|
- for (i = 0; i < v; i++)
|
|
|
- eccbuf[i] = strinbuf.charCodeAt(i);
|
|
|
- strinbuf = eccbuf.slice(0);
|
|
|
-
|
|
|
- // calculate max string length
|
|
|
- x = datablkw * (neccblk1 + neccblk2) + neccblk2;
|
|
|
- if (v >= x - 2) {
|
|
|
- v = x - 2;
|
|
|
- if (version > 9)
|
|
|
- v--;
|
|
|
- }
|
|
|
-
|
|
|
- // shift and repack to insert length prefix
|
|
|
- i = v;
|
|
|
- if (version > 9) {
|
|
|
- strinbuf[i + 2] = 0;
|
|
|
- strinbuf[i + 3] = 0;
|
|
|
- while (i--) {
|
|
|
- t = strinbuf[i];
|
|
|
- strinbuf[i + 3] |= 255 & (t << 4);
|
|
|
- strinbuf[i + 2] = t >> 4;
|
|
|
- }
|
|
|
- strinbuf[2] |= 255 & (v << 4);
|
|
|
- strinbuf[1] = v >> 4;
|
|
|
- strinbuf[0] = 0x40 | (v >> 12);
|
|
|
- } else {
|
|
|
- strinbuf[i + 1] = 0;
|
|
|
- strinbuf[i + 2] = 0;
|
|
|
- while (i--) {
|
|
|
- t = strinbuf[i];
|
|
|
- strinbuf[i + 2] |= 255 & (t << 4);
|
|
|
- strinbuf[i + 1] = t >> 4;
|
|
|
- }
|
|
|
- strinbuf[1] |= 255 & (v << 4);
|
|
|
- strinbuf[0] = 0x40 | (v >> 4);
|
|
|
- }
|
|
|
- // fill to end with pad pattern
|
|
|
- i = v + 3 - (version < 10);
|
|
|
- while (i < x) {
|
|
|
- strinbuf[i++] = 0xec;
|
|
|
- // buffer has room if (i == x) break;
|
|
|
- strinbuf[i++] = 0x11;
|
|
|
- }
|
|
|
-
|
|
|
- // calculate and append ECC
|
|
|
-
|
|
|
- // calculate generator polynomial
|
|
|
- genpoly[0] = 1;
|
|
|
- for (i = 0; i < eccblkwid; i++) {
|
|
|
- genpoly[i + 1] = 1;
|
|
|
- for (j = i; j > 0; j--)
|
|
|
- genpoly[j] = genpoly[j] ?
|
|
|
- genpoly[j - 1] ^ gexp[modnn(glog[genpoly[j]] + i)] : genpoly[j - 1];
|
|
|
- genpoly[0] = gexp[modnn(glog[genpoly[0]] + i)];
|
|
|
- }
|
|
|
- for (i = 0; i <= eccblkwid; i++)
|
|
|
- genpoly[i] = glog[genpoly[i]]; // use logs for genpoly[] to save calc step
|
|
|
-
|
|
|
- // append ecc to data buffer
|
|
|
- k = x;
|
|
|
- y = 0;
|
|
|
- for (i = 0; i < neccblk1; i++) {
|
|
|
- appendrs(y, datablkw, k, eccblkwid);
|
|
|
- y += datablkw;
|
|
|
- k += eccblkwid;
|
|
|
- }
|
|
|
- for (i = 0; i < neccblk2; i++) {
|
|
|
- appendrs(y, datablkw + 1, k, eccblkwid);
|
|
|
- y += datablkw + 1;
|
|
|
- k += eccblkwid;
|
|
|
- }
|
|
|
- // interleave blocks
|
|
|
- y = 0;
|
|
|
- for (i = 0; i < datablkw; i++) {
|
|
|
- for (j = 0; j < neccblk1; j++)
|
|
|
- eccbuf[y++] = strinbuf[i + j * datablkw];
|
|
|
- for (j = 0; j < neccblk2; j++)
|
|
|
- eccbuf[y++] = strinbuf[(neccblk1 * datablkw) + i + (j * (datablkw + 1))];
|
|
|
- }
|
|
|
- for (j = 0; j < neccblk2; j++)
|
|
|
- eccbuf[y++] = strinbuf[(neccblk1 * datablkw) + i + (j * (datablkw + 1))];
|
|
|
- for (i = 0; i < eccblkwid; i++)
|
|
|
- for (j = 0; j < neccblk1 + neccblk2; j++)
|
|
|
- eccbuf[y++] = strinbuf[x + i + j * eccblkwid];
|
|
|
- strinbuf = eccbuf;
|
|
|
-
|
|
|
- // pack bits into frame avoiding masked area.
|
|
|
- x = y = width - 1;
|
|
|
- k = v = 1; // up, minus
|
|
|
- /* inteleaved data and ecc codes */
|
|
|
- m = (datablkw + eccblkwid) * (neccblk1 + neccblk2) + neccblk2;
|
|
|
- for (i = 0; i < m; i++) {
|
|
|
- t = strinbuf[i];
|
|
|
- for (j = 0; j < 8; j++, t <<= 1) {
|
|
|
- if (0x80 & t)
|
|
|
- qrframe[x + width * y] = 1;
|
|
|
- do { // find next fill position
|
|
|
- if (v)
|
|
|
- x--;
|
|
|
- else {
|
|
|
- x++;
|
|
|
- if (k) {
|
|
|
- if (y != 0)
|
|
|
- y--;
|
|
|
- else {
|
|
|
- x -= 2;
|
|
|
- k = !k;
|
|
|
- if (x == 6) {
|
|
|
- x--;
|
|
|
- y = 9;
|
|
|
- }
|
|
|
- }
|
|
|
- } else {
|
|
|
- if (y != width - 1)
|
|
|
- y++;
|
|
|
- else {
|
|
|
- x -= 2;
|
|
|
- k = !k;
|
|
|
- if (x == 6) {
|
|
|
- x--;
|
|
|
- y -= 8;
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- v = !v;
|
|
|
- } while (ismasked(x, y));
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- // save pre-mask copy of frame
|
|
|
- strinbuf = qrframe.slice(0);
|
|
|
- t = 0; // best
|
|
|
- y = 30000; // demerit
|
|
|
- // for instead of while since in original arduino code
|
|
|
- // if an early mask was "good enough" it wouldn't try for a better one
|
|
|
- // since they get more complex and take longer.
|
|
|
- for (k = 0; k < 8; k++) {
|
|
|
- applymask(k); // returns black-white imbalance
|
|
|
- x = badcheck();
|
|
|
- if (x < y) { // current mask better than previous best?
|
|
|
- y = x;
|
|
|
- t = k;
|
|
|
- }
|
|
|
- if (t == 7)
|
|
|
- break; // don't increment i to a void redoing mask
|
|
|
- qrframe = strinbuf.slice(0); // reset for next pass
|
|
|
- }
|
|
|
- if (t != k) // redo best mask - none good enough, last wasn't t
|
|
|
- applymask(t);
|
|
|
-
|
|
|
- // add in final mask/ecclevel bytes
|
|
|
- y = fmtword[t + ((ecclevel - 1) << 3)];
|
|
|
- // low byte
|
|
|
- for (k = 0; k < 8; k++, y >>= 1)
|
|
|
- if (y & 1) {
|
|
|
- qrframe[(width - 1 - k) + width * 8] = 1;
|
|
|
- if (k < 6)
|
|
|
- qrframe[8 + width * k] = 1;
|
|
|
- else
|
|
|
- qrframe[8 + width * (k + 1)] = 1;
|
|
|
- }
|
|
|
- // high byte
|
|
|
- for (k = 0; k < 7; k++, y >>= 1)
|
|
|
- if (y & 1) {
|
|
|
- qrframe[8 + width * (width - 7 + k)] = 1;
|
|
|
- if (k)
|
|
|
- qrframe[(6 - k) + width * 8] = 1;
|
|
|
- else
|
|
|
- qrframe[7 + width * 8] = 1;
|
|
|
- }
|
|
|
- return qrframe;
|
|
|
- }
|
|
|
-
|
|
|
-
|
|
|
-
|
|
|
-
|
|
|
- var _canvas = null;
|
|
|
-
|
|
|
- var api = {
|
|
|
-
|
|
|
- get ecclevel() {
|
|
|
- return ecclevel;
|
|
|
- },
|
|
|
-
|
|
|
- set ecclevel(val) {
|
|
|
- ecclevel = val;
|
|
|
- },
|
|
|
-
|
|
|
- get size() {
|
|
|
- return _size;
|
|
|
- },
|
|
|
-
|
|
|
- set size(val) {
|
|
|
- _size = val
|
|
|
- },
|
|
|
-
|
|
|
- get canvas() {
|
|
|
- return _canvas;
|
|
|
- },
|
|
|
-
|
|
|
- set canvas(el) {
|
|
|
- _canvas = el;
|
|
|
- },
|
|
|
-
|
|
|
- getFrame: function(string) {
|
|
|
- return genframe(string);
|
|
|
- },
|
|
|
- //这里的utf16to8(str)是对Text中的字符串进行转码，让其支持中文
|
|
|
- utf16to8: function(str) {
|
|
|
- var out, i, len, c;
|
|
|
-
|
|
|
- out = "";
|
|
|
- len = str.length;
|
|
|
- for (i = 0; i < len; i++) {
|
|
|
- c = str.charCodeAt(i);
|
|
|
- if ((c >= 0x0001) && (c <= 0x007F)) {
|
|
|
- out += str.charAt(i);
|
|
|
- } else if (c > 0x07FF) {
|
|
|
- out += String.fromCharCode(0xE0 | ((c >> 12) & 0x0F));
|
|
|
- out += String.fromCharCode(0x80 | ((c >> 6) & 0x3F));
|
|
|
- out += String.fromCharCode(0x80 | ((c >> 0) & 0x3F));
|
|
|
- } else {
|
|
|
- out += String.fromCharCode(0xC0 | ((c >> 6) & 0x1F));
|
|
|
- out += String.fromCharCode(0x80 | ((c >> 0) & 0x3F));
|
|
|
- }
|
|
|
- }
|
|
|
- return out;
|
|
|
- },
|
|
|
- /**
|
|
|
- * 新增$this参数，传入组件的this,兼容在组件中生成
|
|
|
- */
|
|
|
- draw: function(str, canvas, cavW, cavH, cavColor, haveImg, imageUrl, imageSize, $this, cb = function() {}, ecc) {
|
|
|
- var that = this;
|
|
|
- ecclevel = ecc || ecclevel;
|
|
|
- canvas = canvas || _canvas;
|
|
|
- if (!canvas) {
|
|
|
- console.warn('No canvas provided to draw QR code in!')
|
|
|
- return;
|
|
|
- }
|
|
|
-
|
|
|
-
|
|
|
- let pre_background = "#ffffff";
|
|
|
- var size = Math.min(cavW, cavH);
|
|
|
- str = that.utf16to8(str); //增加中文显示
|
|
|
-
|
|
|
- var frame = that.getFrame(str);
|
|
|
- // 组件中生成qrcode需要绑定this
|
|
|
- var ctx = uni.createCanvasContext(canvas, $this);
|
|
|
- var px = Math.round(size / (width ));
|
|
|
-
|
|
|
- var roundedSize = px * (width);
|
|
|
- // var px = 1 ;
|
|
|
- // var roundedSize = px * (width + 8) ;
|
|
|
-
|
|
|
- //var roundedSize = 0 ;
|
|
|
- //var offset = Math.floor((size - roundedSize) / 2);
|
|
|
- var offset = 0 ;
|
|
|
- size = roundedSize;
|
|
|
- //ctx.clearRect(0, 0, cavW, cavW);
|
|
|
- ctx.setFillStyle(pre_background)
|
|
|
- ctx.fillRect(0, 0, cavW, cavW);
|
|
|
- ctx.setFillStyle(cavColor);
|
|
|
- for (var i = 0; i < width; i++) {
|
|
|
- for (var j = 0; j < width; j++) {
|
|
|
- if (frame[j * width + i]) {
|
|
|
- ctx.fillRect(px * ( i) + offset, px * ( j) + offset, px, px);
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- //画图片
|
|
|
- if (haveImg) {
|
|
|
- try {
|
|
|
- var x = Number(((cavW - imageSize - 14) / 2).toFixed(2));
|
|
|
- var y = Number(((cavH - imageSize -14) / 2).toFixed(2));
|
|
|
- drawRoundedRect(ctx, x, y, imageSize, imageSize, imageSize / 2, 6, true, true)
|
|
|
-
|
|
|
- let isNetImg = false;
|
|
|
-
|
|
|
- isNetImg = imageUrl.substr(0, 4) == 'http' ? true : false;
|
|
|
-
|
|
|
- if (isNetImg) {
|
|
|
- //网络图片下载到本地
|
|
|
- uni.getImageInfo({
|
|
|
- src: imageUrl,
|
|
|
- success: function(res) {
|
|
|
- ctx.drawImage(res.path, x, y, imageSize, imageSize);
|
|
|
- //--增加绘制完成回调
|
|
|
- ctx.draw(false, function() {
|
|
|
- cb();
|
|
|
- })
|
|
|
- }
|
|
|
- })
|
|
|
- } else {
|
|
|
- ctx.drawImage(imageUrl, x, y, imageSize, imageSize);
|
|
|
- //--增加绘制完成回调
|
|
|
- ctx.draw(false, function() {
|
|
|
- cb();
|
|
|
- })
|
|
|
- }
|
|
|
-
|
|
|
-
|
|
|
-
|
|
|
-
|
|
|
- // 画圆角矩形
|
|
|
- function drawRoundedRect(ctxi, x, y, width, height, r, lineWidth, fill, stroke) {
|
|
|
- ctxi.setLineWidth(lineWidth);
|
|
|
- ctxi.setFillStyle(pre_background);
|
|
|
- ctxi.setStrokeStyle(pre_background);
|
|
|
- ctxi.beginPath(); // draw top and top right corner
|
|
|
- ctxi.moveTo(x + r, y);
|
|
|
- ctxi.arcTo(x + width, y, x + width, y + r, r); // draw right side and bottom right corner
|
|
|
- ctxi.arcTo(x + width, y + height, x + width - r, y + height, r); // draw bottom and bottom left corner
|
|
|
- ctxi.arcTo(x, y + height, x, y + height - r, r); // draw left and top left corner
|
|
|
- ctxi.arcTo(x, y, x + r, y, r);
|
|
|
- ctxi.closePath();
|
|
|
- if (fill) {
|
|
|
- ctxi.fill();
|
|
|
- }
|
|
|
- if (stroke) {
|
|
|
- ctxi.stroke();
|
|
|
- }
|
|
|
- }
|
|
|
- } catch (e) {
|
|
|
- //TODO handle the exception
|
|
|
- }
|
|
|
-
|
|
|
- } else {
|
|
|
- //--增加绘制完成回调
|
|
|
- ctx.draw(false, function() {
|
|
|
- cb();
|
|
|
- })
|
|
|
- }
|
|
|
-
|
|
|
-
|
|
|
-
|
|
|
- }
|
|
|
- }
|
|
|
- module.exports = {
|
|
|
- api
|
|
|
- }
|
|
|
-})();
|
