Function EmbedVersionInfo

czxing/src/main/cpp/zxing/src/qrcode/QRMatrixUtil.cpp:231–251

Embed version information if need be. On success, modify the matrix and return true. See 8.10 of JISX0510:2004 (p.47) for how to embed version information.

// Embed version information if need be. On success, modify the matrix and return true.
// See 8.10 of JISX0510:2004 (p.47) for how to embed version information.
static void EmbedVersionInfo(const Version& version, TritMatrix& matrix)
{
	if (version.versionNumber() < 7) {  // Version info is necessary if version >= 7.
		return;  // Don't need version info.
	}

	BitArray versionInfoBits = MakeVersionInfoBits(version);

	int bitIndex = 6 * 3 - 1;  // It will decrease from 17 to 0.
	for (int i = 0; i < 6; ++i) {
		for (int j = 0; j < 3; ++j) {
			// Place bits in LSB (least significant bit) to MSB order.
			bool bit = versionInfoBits.get(bitIndex);
			bitIndex--;
			// Left bottom corner.
			matrix.set(i, matrix.height() - 11 + j, bit);
			// Right bottom corner.
			matrix.set(matrix.height() - 11 + j, i, bit);
		}
	}
}

// Embed "dataBits" using "getMaskPattern". On success, modify the matrix and return true.
// For debugging purposes, it skips masking process if "getMaskPattern" is -1.