private static string ECBlocksToString(VersionZX.ECBlocks ecBlocks)
{
VersionZX.ECB[] ecBlock = ecBlocks.getECBlocks();
string returnValue = "";
foreach (VersionZX.ECB ecb in ecBlock)
{
returnValue = string.Join(s_Separator, returnValue, ecb.Count, ecb.DataCodewords);
}
return(returnValue);
}
/// <summary> Initialize "QRCodeInternal" according to "numInputBytes", "m_EcLevelInternal", and "mode". On success,
/// modify "QRCodeInternal".
/// </summary>
internal static void initQRCode(int numInputBytes, ErrorCorrectionLevelInternal m_EcLevelInternal, Mode mode, QRCodeInternal qrCodeInternal)
{
qrCodeInternal.EcLevelInternal = m_EcLevelInternal;
qrCodeInternal.Mode = mode;
// In the following comments, we use numbers of Version 7-H.
for (int versionNum = 1; versionNum <= 40; versionNum++)
{
Version version = Version.getVersionForNumber(versionNum);
// numBytes = 196
int numBytes = version.TotalCodewords;
// getNumECBytes = 130
Version.ECBlocks ecBlocks = version.getECBlocksForLevel(m_EcLevelInternal);
int numEcBytes = ecBlocks.TotalECCodewords;
// getNumRSBlocks = 5
int numRSBlocks = ecBlocks.NumBlocks;
// getNumDataBytes = 196 - 130 = 66
int numDataBytes = numBytes - numEcBytes;
// We want to choose the smallest version which can contain data of "numInputBytes" + some
// extra bits for the header (mode info and length info). The header can be three bytes
// (precisely 4 + 16 bits) at most. Hence we do +3 here.
if (numDataBytes >= numInputBytes + 3)
{
// Yay, we found the proper rs block info!
qrCodeInternal.Version = versionNum;
qrCodeInternal.NumTotalBytes = numBytes;
qrCodeInternal.NumDataBytes = numDataBytes;
qrCodeInternal.NumRSBlocks = numRSBlocks;
// getNumECBytes = 196 - 66 = 130
qrCodeInternal.NumECBytes = numEcBytes;
// matrix width = 21 + 6 * 4 = 45
qrCodeInternal.MatrixWidth = version.DimensionForVersion;
return;
}
}
throw new WriterException("Cannot find proper rs block info (input data too big?)");
}