Function Decode

czxing/src/main/cpp/zxing/src/maxicode/MCDecoder.cpp:298–330

} // DecodedBitStreamParser

DecoderResult Decode(const BitMatrix& bits)
{
	ByteArray codewords = BitMatrixParser::ReadCodewords(bits);

	if (!CorrectErrors(codewords, 0, 10, 10, ALL))
		return ChecksumError();

	int mode = codewords[0] & 0x0F;
	ByteArray datawords;
	switch (mode) {
	case 2: // Structured Carrier Message (numeric postcode)
	case 3: // Structured Carrier Message (alphanumeric postcode)
	case 4: // Standard Symbol
	case 6: // Reader Programming
		if (CorrectErrors(codewords, 20, 84, 40, EVEN) && CorrectErrors(codewords, 20, 84, 40, ODD))
			datawords.resize(94, 0);
		else
			return ChecksumError();
		break;
	case 5: // Full ECC
		if (CorrectErrors(codewords, 20, 68, 56, EVEN) && CorrectErrors(codewords, 20, 68, 56, ODD))
			datawords.resize(78, 0);
		else
			return ChecksumError();
		break;
	default: return FormatError("Invalid mode");
	}

	std::copy_n(codewords.begin(), 10, datawords.begin());
	std::copy_n(codewords.begin() + 20, datawords.size() - 10, datawords.begin() + 10);

	return DecodedBitStreamParser::Decode(std::move(datawords), mode);
}

} // namespace ZXing::MaxiCode