// Make bit vector of type information. On success, store the result in "bits" and return true.
// Encode error correction level and mask pattern. See 8.9 of
// JISX0510:2004 (p.45) for details.
internal static void makeTypeInfoBits(ErrorCorrectionLevelInternal m_EcLevelInternal, int maskPattern, BitVector bits)
{
if (!QRCodeInternal.isValidMaskPattern(maskPattern))
{
throw new WriterException("Invalid mask pattern");
}
int typeInfo = (m_EcLevelInternal.Bits << 3) | maskPattern;
bits.appendBits(typeInfo, 5);
int bchCode = calculateBCHCode(typeInfo, TYPE_INFO_POLY);
bits.appendBits(bchCode, 10);
BitVector maskBits = new BitVector();
maskBits.appendBits(TYPE_INFO_MASK_PATTERN, 15);
bits.xor(maskBits);
if (bits.size() != 15)
{
// Just in case.
throw new WriterException("should not happen but we got: " + bits.size());
}
}
internal static void encode(System.String content, ErrorCorrectionLevelInternal m_EcLevelInternal, System.Collections.Hashtable hints, QRCodeInternal qrCodeInternal)
{
System.String encoding = hints == null?null:(System.String) hints[EncodeHintType.CHARACTER_SET];
if (encoding == null)
{
encoding = DEFAULT_BYTE_MODE_ENCODING;
}
// Step 1: Choose the mode (encoding).
Mode mode = chooseMode(content, encoding);
// Step 2: Append "bytes" into "dataBits" in appropriate encoding.
BitVector dataBits = new BitVector();
appendBytes(content, mode, dataBits, encoding);
// Step 3: Initialize QR code that can contain "dataBits".
int numInputBytes = dataBits.sizeInBytes();
initQRCode(numInputBytes, m_EcLevelInternal, mode, qrCodeInternal);
// Step 4: Build another bit vector that contains header and data.
BitVector headerAndDataBits = new BitVector();
// Step 4.5: Append ECI message if applicable
if (mode == Mode.BYTE && !DEFAULT_BYTE_MODE_ENCODING.Equals(encoding))
{
CharacterSetECI eci = CharacterSetECI.getCharacterSetECIByName(encoding);
if (eci != null)
{
appendECI(eci, headerAndDataBits);
}
}
appendModeInfo(mode, headerAndDataBits);
int numLetters = mode.Equals(Mode.BYTE)?dataBits.sizeInBytes():content.Length;
appendLengthInfo(numLetters, qrCodeInternal.Version, mode, headerAndDataBits);
headerAndDataBits.appendBitVector(dataBits);
// Step 5: Terminate the bits properly.
terminateBits(qrCodeInternal.NumDataBytes, headerAndDataBits);
// Step 6: Interleave data bits with error correction code.
BitVector finalBits = new BitVector();
interleaveWithECBytes(headerAndDataBits, qrCodeInternal.NumTotalBytes, qrCodeInternal.NumDataBytes, qrCodeInternal.NumRSBlocks, finalBits);
// Step 7: Choose the mask pattern and set to "QRCodeInternal".
ByteMatrix matrix = new ByteMatrix(qrCodeInternal.MatrixWidth, qrCodeInternal.MatrixWidth);
qrCodeInternal.MaskPattern = chooseMaskPattern(finalBits, qrCodeInternal.EcLevelInternal, qrCodeInternal.Version, matrix);
// Step 8. Build the matrix and set it to "QRCodeInternal".
MatrixUtil.buildMatrix(finalBits, qrCodeInternal.EcLevelInternal, qrCodeInternal.Version, qrCodeInternal.MaskPattern, matrix);
qrCodeInternal.Matrix = matrix;
// Step 9. Make sure we have a valid QR Code.
if (!qrCodeInternal.Valid)
{
throw new WriterException("Invalid QR code: " + qrCodeInternal.ToString());
}
}
private void ZXEncode(string content, int option)
{
System.String encoding = QRCodeConstantVariable.DefaultEncoding;
ErrorCorrectionLevelInternal m_EcLevelInternal = ErrorCorrectionLevelInternal.H;
QRCodeInternal qrCodeInternal = new QRCodeInternal();
// Step 1: Choose the mode (encoding).
Mode mode = EncoderInternal.chooseMode(content, encoding);
// Step 2: Append "bytes" into "dataBits" in appropriate encoding.
BitVector dataBits = new BitVector();
EncoderInternal.appendBytes(content, mode, dataBits, encoding);
// Step 3: Initialize QR code that can contain "dataBits".
int numInputBytes = dataBits.sizeInBytes();
EncoderInternal.initQRCode(numInputBytes, m_EcLevelInternal, mode, qrCodeInternal);
// Step 4: Build another bit vector that contains header and data.
BitVector headerAndDataBits = new BitVector();
// Step 4.5: Append ECI message if applicable
if (mode == Mode.BYTE && !QRCodeConstantVariable.DefaultEncoding.Equals(encoding))
{
CharacterSetECI eci = CharacterSetECI.getCharacterSetECIByName(encoding);
if (eci != null)
{
EncoderInternal.appendECI(eci, headerAndDataBits);
}
}
EncoderInternal.appendModeInfo(mode, headerAndDataBits);
int numLetters = mode.Equals(Mode.BYTE)?dataBits.sizeInBytes():content.Length;
EncoderInternal.appendLengthInfo(numLetters, qrCodeInternal.Version, mode, headerAndDataBits);
headerAndDataBits.appendBitVector(dataBits);
// Step 5: Terminate the bits properly.
EncoderInternal.terminateBits(qrCodeInternal.NumDataBytes, headerAndDataBits);
// Step 6: Interleave data bits with error correction code.
BitVector finalBits = new BitVector();
EncoderInternal.interleaveWithECBytes(headerAndDataBits, qrCodeInternal.NumTotalBytes, qrCodeInternal.NumDataBytes, qrCodeInternal.NumRSBlocks, finalBits);
if(option == 3)
{
return;
}
// Step 7: Choose the mask pattern and set to "QRCodeInternal".
ByteMatrix matrix = new ByteMatrix(qrCodeInternal.MatrixWidth, qrCodeInternal.MatrixWidth);
qrCodeInternal.MaskPattern = EncoderInternal.chooseMaskPattern(finalBits, qrCodeInternal.EcLevelInternal, qrCodeInternal.Version, matrix);
// Step 8. Build the matrix and set it to "QRCodeInternal".
MatrixUtil.buildMatrix(finalBits, qrCodeInternal.EcLevelInternal, qrCodeInternal.Version, qrCodeInternal.MaskPattern, matrix);
qrCodeInternal.Matrix = matrix;
}
// Return the mask bit for "getMaskPattern" at "x" and "y". See 8.8 of JISX0510:2004 for mask
// pattern conditions.
internal static bool getDataMaskBit(int maskPattern, int x, int y)
{
if (!QRCodeInternal.isValidMaskPattern(maskPattern))
{
throw new System.ArgumentException("Invalid mask pattern");
}
int intermediate, temp;
switch (maskPattern)
{
case 0:
intermediate = (y + x) & 0x1;
break;
case 1:
intermediate = y & 0x1;
break;
case 2:
intermediate = x % 3;
break;
case 3:
intermediate = (y + x) % 3;
break;
case 4:
intermediate = ((SupportClass.URShift(y, 1)) + (x / 3)) & 0x1;
break;
case 5:
temp = y * x;
intermediate = (temp & 0x1) + (temp % 3);
break;
case 6:
temp = y * x;
intermediate = (((temp & 0x1) + (temp % 3)) & 0x1);
break;
case 7:
temp = y * x;
intermediate = (((temp % 3) + ((y + x) & 0x1)) & 0x1);
break;
default:
throw new System.ArgumentException("Invalid mask pattern: " + maskPattern);
}
return(intermediate == 0);
}
/// <summary>
/// Combine Gma.QrCodeNet.Encoding input recognition method and version control method
/// with legacy code. To create expected answer.
/// This is base on assume Gma.QrCodeNet.Encoding input recognition and version control sometime
/// give different result as legacy code.
/// </summary>
/// <param name="content"></param>
/// <returns></returns>
internal static BitVector DataEncodeUsingReferenceImplementation(string content, ErrorCorrectionLevel ecLevel, out QRCodeInternal qrInternal)
{
if(string.IsNullOrEmpty(content))
throw new ArgumentException("input string content can not be null or empty");
//Choose mode
RecognitionStruct recognitionResult = InputRecognise.Recognise(content);
string encodingName = recognitionResult.EncodingName;
Mode mode = ConvertMode(recognitionResult.Mode);
//append byte to databits
BitVector dataBits = new BitVector();
EncoderInternal.appendBytes(content, mode, dataBits, encodingName);
int dataBitsLength = dataBits.size();
VersionControlStruct vcStruct =
VersionControl.InitialSetup(dataBitsLength, recognitionResult.Mode, ecLevel, recognitionResult.EncodingName);
//ECI
BitVector headerAndDataBits = new BitVector();
string defaultByteMode = "iso-8859-1";
if (mode == Mode.BYTE && !defaultByteMode.Equals(encodingName))
{
CharacterSetECI eci = CharacterSetECI.getCharacterSetECIByName(encodingName);
if (eci != null)
{
EncoderInternal.appendECI(eci, headerAndDataBits);
}
}
//Mode
EncoderInternal.appendModeInfo(mode, headerAndDataBits);
//Char info
int numLetters = mode.Equals(Mode.BYTE)?dataBits.sizeInBytes():content.Length;
EncoderInternal.appendLengthInfo(numLetters, vcStruct.VersionDetail.Version, mode, headerAndDataBits);
//Combine with dataBits
headerAndDataBits.appendBitVector(dataBits);
// Terminate the bits properly.
EncoderInternal.terminateBits(vcStruct.VersionDetail.NumDataBytes, headerAndDataBits);
qrInternal = new QRCodeInternal();
qrInternal.Version = vcStruct.VersionDetail.Version;
qrInternal.MatrixWidth = vcStruct.VersionDetail.MatrixWidth;
qrInternal.EcLevelInternal = ErrorCorrectionLevelConverter.ToInternal(ecLevel);
qrInternal.NumTotalBytes = vcStruct.VersionDetail.NumTotalBytes;
qrInternal.NumDataBytes = vcStruct.VersionDetail.NumDataBytes;
qrInternal.NumRSBlocks = vcStruct.VersionDetail.NumECBlocks;
return headerAndDataBits;
}
public void QrPerformanceTest()
{
Stopwatch sw = new Stopwatch();
int timesofTest = 1000;
string[] timeElapsed = new string[2];
string testCase = "sdg;alwsetuo1204985lkscvzlkjt;sdfjwltkja;slkdfjoiutLSAFAJ;GLKAJS;LDKJT;LKJ";
QrEncoder encoder = new QrEncoder(ErrorCorrectionLevel.H);
sw.Start();
for(int i = 0; i < timesofTest; i++)
{
encoder.Encode(testCase);
}
sw.Stop();
timeElapsed[0] = sw.ElapsedMilliseconds.ToString();
sw.Reset();
ErrorCorrectionLevelInternal level = ErrorCorrectionLevelConverter.ToInternal(ErrorCorrectionLevel.H);
QRCodeInternal qrCodeInternal = new QRCodeInternal();
sw.Start();
for(int i = 0; i < timesofTest; i++)
{
EncoderInternal.encode(testCase, level, qrCodeInternal);
}
sw.Stop();
timeElapsed[1] = sw.ElapsedMilliseconds.ToString();
Assert.Pass("Encode performance {0} Tests~ QrCode.Net: {1} ZXing: {2}", timesofTest, timeElapsed[0], timeElapsed[1]);
}
private void PTest(int contentLength)
{
Stopwatch sw = new Stopwatch();
int timesofTest = 1000;
string[] timeElapsed = new string[2];
sw.Start();
for(int i = 0; i < timesofTest; i++)
{
VersionControl.InitialSetup(contentLength, Mode.Alphanumeric, ErrorCorrectionLevel.H, QRCodeConstantVariable.DefaultEncoding);
}
sw.Stop();
timeElapsed[0] = sw.ElapsedMilliseconds.ToString();
sw.Reset();
QRCodeInternal qrInternal = new QRCodeInternal();
int byteLength = contentLength / 8;
sw.Start();
for(int i = 0; i < timesofTest; i++)
{
EncoderInternal.initQRCode(byteLength, ErrorCorrectionLevelInternal.H, ZMode.ALPHANUMERIC, qrInternal);
}
sw.Stop();
timeElapsed[1] = sw.ElapsedMilliseconds.ToString();
Assert.Pass("VersionControl {0} Tests~ QrCode.Net: {1} ZXing: {2}", timesofTest, timeElapsed[0], timeElapsed[1]);
}
internal static void encode(System.String content, ErrorCorrectionLevelInternal m_EcLevelInternal, System.Collections.Hashtable hints, QRCodeInternal qrCodeInternal)
{
System.String encoding = hints == null ? null : (System.String)hints[EncodeHintType.CHARACTER_SET];
if (encoding == null)
{
encoding = DEFAULT_BYTE_MODE_ENCODING;
}
// Step 1: Choose the mode (encoding).
Mode mode = chooseMode(content, encoding);
// Step 2: Append "bytes" into "dataBits" in appropriate encoding.
BitVector dataBits = new BitVector();
appendBytes(content, mode, dataBits, encoding);
// Step 3: Initialize QR code that can contain "dataBits".
int numInputBytes = dataBits.sizeInBytes();
initQRCode(numInputBytes, m_EcLevelInternal, mode, qrCodeInternal);
// Step 4: Build another bit vector that contains header and data.
BitVector headerAndDataBits = new BitVector();
// Step 4.5: Append ECI message if applicable
if (mode == Mode.BYTE && !DEFAULT_BYTE_MODE_ENCODING.Equals(encoding))
{
CharacterSetECI eci = CharacterSetECI.getCharacterSetECIByName(encoding);
if (eci != null)
{
appendECI(eci, headerAndDataBits);
}
}
appendModeInfo(mode, headerAndDataBits);
int numLetters = mode.Equals(Mode.BYTE) ? dataBits.sizeInBytes() : content.Length;
appendLengthInfo(numLetters, qrCodeInternal.Version, mode, headerAndDataBits);
headerAndDataBits.appendBitVector(dataBits);
// Step 5: Terminate the bits properly.
terminateBits(qrCodeInternal.NumDataBytes, headerAndDataBits);
// Step 6: Interleave data bits with error correction code.
BitVector finalBits = new BitVector();
interleaveWithECBytes(headerAndDataBits, qrCodeInternal.NumTotalBytes, qrCodeInternal.NumDataBytes, qrCodeInternal.NumRSBlocks, finalBits);
// Step 7: Choose the mask pattern and set to "QRCodeInternal".
ByteMatrix matrix = new ByteMatrix(qrCodeInternal.MatrixWidth, qrCodeInternal.MatrixWidth);
qrCodeInternal.MaskPattern = chooseMaskPattern(finalBits, qrCodeInternal.EcLevelInternal, qrCodeInternal.Version, matrix);
// Step 8. Build the matrix and set it to "QRCodeInternal".
MatrixUtil.buildMatrix(finalBits, qrCodeInternal.EcLevelInternal, qrCodeInternal.Version, qrCodeInternal.MaskPattern, matrix);
qrCodeInternal.Matrix = matrix;
// Step 9. Make sure we have a valid QR Code.
if (!qrCodeInternal.Valid)
{
throw new WriterException("Invalid QR code: " + qrCodeInternal.ToString());
}
}
/// <summary> Encode "bytes" with the error correction level "m_EcLevelInternal". The encoding mode will be chosen
/// internally by chooseMode(). On success, store the result in "QRCodeInternal".
///
/// We recommend you to use QRCodeInternal.EC_LEVEL_L (the lowest level) for
/// "getECLevel" since our primary use is to show QR code on desktop screens. We don't need very
/// strong error correction for this purpose.
///
/// Note that there is no way to encode bytes in MODE_KANJI. We might want to add EncodeWithMode()
/// with which clients can specify the encoding mode. For now, we don't need the functionality.
/// </summary>
public static void encode(System.String content, ErrorCorrectionLevelInternal m_EcLevelInternal, QRCodeInternal qrCodeInternal)
{
encode(content, m_EcLevelInternal, null, qrCodeInternal);
}
/// <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?)");
}
/// <summary> Encode "bytes" with the error correction level "m_EcLevelInternal". The encoding mode will be chosen
/// internally by chooseMode(). On success, store the result in "QRCodeInternal".
///
/// We recommend you to use QRCodeInternal.EC_LEVEL_L (the lowest level) for
/// "getECLevel" since our primary use is to show QR code on desktop screens. We don't need very
/// strong error correction for this purpose.
///
/// Note that there is no way to encode bytes in MODE_KANJI. We might want to add EncodeWithMode()
/// with which clients can specify the encoding mode. For now, we don't need the functionality.
/// </summary>
public static void encode(System.String content, ErrorCorrectionLevelInternal m_EcLevelInternal, QRCodeInternal qrCodeInternal)
{
encode(content, m_EcLevelInternal, null, qrCodeInternal);
}
/// <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?)");
}
