| 74 | } |
| 75 | |
| 76 | uint32_t vectorGraphicEcc(const Bytes& bytes) |
| 77 | { |
| 78 | uint32_t e = 0; |
| 79 | Bytes payloadBytes = bytes.slice(0, bytes.size() - 4); |
| 80 | ByteReader payload(payloadBytes); |
| 81 | while (!payload.eof()) |
| 82 | { |
| 83 | uint8_t byte = payload.read_8(); |
| 84 | for (int i = 0; i < 8; i++) |
| 85 | { |
| 86 | e = (e << 1) | eccNextBit(e, byte >> 7); |
| 87 | byte <<= 1; |
| 88 | } |
| 89 | } |
| 90 | Bytes trailerBytes = bytes.slice(bytes.size() - 4); |
| 91 | ByteReader trailer(trailerBytes); |
| 92 | uint32_t res = e; |
| 93 | while (!trailer.eof()) |
| 94 | { |
| 95 | uint8_t byte = trailer.read_8(); |
| 96 | for (int i = 0; i < 8; i++) |
| 97 | { |
| 98 | res = (res << 1) | eccNextBit(e, byte >> 7); |
| 99 | e <<= 1; |
| 100 | byte <<= 1; |
| 101 | } |
| 102 | } |
| 103 | return res; |
| 104 | } |
| 105 | |
| 106 | /* Fixes bytes when possible, returning true if changed. */ |
| 107 | static bool vectorGraphicEccFix(Bytes& bytes, uint32_t syndrome) |
no test coverage detected