Java Code Examples for com.google.zxing.common.BitArray#appendBitArray()

The following examples show how to use com.google.zxing.common.BitArray#appendBitArray() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example 1

Source File: Encoder.java From ScreenCapture with MIT License

4 votes

public static QRCode encode(String content,
                            ErrorCorrectionLevel ecLevel,
                            Map<EncodeHintType,?> hints) throws WriterException {

  // Determine what character encoding has been specified by the caller, if any
  String encoding = DEFAULT_BYTE_MODE_ENCODING;
  boolean hasEncodingHint = hints != null && hints.containsKey(EncodeHintType.CHARACTER_SET);
  if (hasEncodingHint) {
    encoding = hints.get(EncodeHintType.CHARACTER_SET).toString();
  }

  // Pick an encoding mode appropriate for the content. Note that this will not attempt to use
  // multiple modes / segments even if that were more efficient. Twould be nice.
  Mode mode = chooseMode(content, encoding);

  // This will store the header information, like mode and
  // length, as well as "header" segments like an ECI segment.
  BitArray headerBits = new BitArray();

  // Append ECI segment if applicable
  if (mode == Mode.BYTE && (hasEncodingHint || !DEFAULT_BYTE_MODE_ENCODING.equals(encoding))) {
    CharacterSetECI eci = CharacterSetECI.getCharacterSetECIByName(encoding);
    if (eci != null) {
      appendECI(eci, headerBits);
    }
  }

  // (With ECI in place,) Write the mode marker
  appendModeInfo(mode, headerBits);

  // Collect data within the main segment, separately, to count its size if needed. Don't add it to
  // main payload yet.
  BitArray dataBits = new BitArray();
  appendBytes(content, mode, dataBits, encoding);

  Version version;
  if (hints != null && hints.containsKey(EncodeHintType.QR_VERSION)) {
    int versionNumber = Integer.parseInt(hints.get(EncodeHintType.QR_VERSION).toString());
    version = Version.getVersionForNumber(versionNumber);
    int bitsNeeded = calculateBitsNeeded(mode, headerBits, dataBits, version);
    if (!willFit(bitsNeeded, version, ecLevel)) {
      throw new WriterException("Data too big for requested version");
    }
  } else {
    version = recommendVersion(ecLevel, mode, headerBits, dataBits);
  }

  BitArray headerAndDataBits = new BitArray();
  headerAndDataBits.appendBitArray(headerBits);
  // Find "length" of main segment and write it
  int numLetters = mode == Mode.BYTE ? dataBits.getSizeInBytes() : content.length();
  appendLengthInfo(numLetters, version, mode, headerAndDataBits);
  // Put data together into the overall payload
  headerAndDataBits.appendBitArray(dataBits);

  Version.ECBlocks ecBlocks = version.getECBlocksForLevel(ecLevel);
  int numDataBytes = version.getTotalCodewords() - ecBlocks.getTotalECCodewords();

  // Terminate the bits properly.
  terminateBits(numDataBytes, headerAndDataBits);

  // Interleave data bits with error correction code.
  BitArray finalBits = interleaveWithECBytes(headerAndDataBits,
                                             version.getTotalCodewords(),
                                             numDataBytes,
                                             ecBlocks.getNumBlocks());

  QRCode qrCode = new QRCode();

  qrCode.setECLevel(ecLevel);
  qrCode.setMode(mode);
  qrCode.setVersion(version);

  //  Choose the mask pattern and set to "qrCode".
  int dimension = version.getDimensionForVersion();
  ByteMatrix matrix = new ByteMatrix(dimension, dimension);
  int maskPattern = chooseMaskPattern(finalBits, ecLevel, version, matrix);
  qrCode.setMaskPattern(maskPattern);

  // Build the matrix and set it to "qrCode".
  MatrixUtil.buildMatrix(finalBits, ecLevel, version, maskPattern, matrix);
  qrCode.setMatrix(matrix);

  return qrCode;
}

Example 2

Source File: Encoder.java From Tesseract-OCR-Scanner with Apache License 2.0

4 votes

public static QRCode encode(String content,
                            ErrorCorrectionLevel ecLevel,
                            Map<EncodeHintType,?> hints) throws WriterException {

  // Determine what character encoding has been specified by the caller, if any
  String encoding = DEFAULT_BYTE_MODE_ENCODING;
  boolean hasEncodingHint = hints != null && hints.containsKey(EncodeHintType.CHARACTER_SET);
  if (hasEncodingHint) {
    encoding = hints.get(EncodeHintType.CHARACTER_SET).toString();
  }

  // Pick an encoding mode appropriate for the content. Note that this will not attempt to use
  // multiple modes / segments even if that were more efficient. Twould be nice.
  Mode mode = chooseMode(content, encoding);

  // This will store the header information, like mode and
  // length, as well as "header" segments like an ECI segment.
  BitArray headerBits = new BitArray();

  // Append ECI segment if applicable
  if (mode == Mode.BYTE && (hasEncodingHint || !DEFAULT_BYTE_MODE_ENCODING.equals(encoding))) {
    CharacterSetECI eci = CharacterSetECI.getCharacterSetECIByName(encoding);
    if (eci != null) {
      appendECI(eci, headerBits);
    }
  }

  // (With ECI in place,) Write the mode marker
  appendModeInfo(mode, headerBits);

  // Collect data within the main segment, separately, to count its size if needed. Don't add it to
  // main payload yet.
  BitArray dataBits = new BitArray();
  appendBytes(content, mode, dataBits, encoding);

  Version version;
  if (hints != null && hints.containsKey(EncodeHintType.QR_VERSION)) {
    int versionNumber = Integer.parseInt(hints.get(EncodeHintType.QR_VERSION).toString());
    version = Version.getVersionForNumber(versionNumber);
    int bitsNeeded = calculateBitsNeeded(mode, headerBits, dataBits, version);
    if (!willFit(bitsNeeded, version, ecLevel)) {
      throw new WriterException("Data too big for requested version");
    }
  } else {
    version = recommendVersion(ecLevel, mode, headerBits, dataBits);
  }

  BitArray headerAndDataBits = new BitArray();
  headerAndDataBits.appendBitArray(headerBits);
  // Find "length" of main segment and write it
  int numLetters = mode == Mode.BYTE ? dataBits.getSizeInBytes() : content.length();
  appendLengthInfo(numLetters, version, mode, headerAndDataBits);
  // Put data together into the overall payload
  headerAndDataBits.appendBitArray(dataBits);

  Version.ECBlocks ecBlocks = version.getECBlocksForLevel(ecLevel);
  int numDataBytes = version.getTotalCodewords() - ecBlocks.getTotalECCodewords();

  // Terminate the bits properly.
  terminateBits(numDataBytes, headerAndDataBits);

  // Interleave data bits with error correction code.
  BitArray finalBits = interleaveWithECBytes(headerAndDataBits,
                                             version.getTotalCodewords(),
                                             numDataBytes,
                                             ecBlocks.getNumBlocks());

  QRCode qrCode = new QRCode();

  qrCode.setECLevel(ecLevel);
  qrCode.setMode(mode);
  qrCode.setVersion(version);

  //  Choose the mask pattern and set to "qrCode".
  int dimension = version.getDimensionForVersion();
  ByteMatrix matrix = new ByteMatrix(dimension, dimension);
  int maskPattern = chooseMaskPattern(finalBits, ecLevel, version, matrix);
  qrCode.setMaskPattern(maskPattern);

  // Build the matrix and set it to "qrCode".
  MatrixUtil.buildMatrix(finalBits, ecLevel, version, maskPattern, matrix);
  qrCode.setMatrix(matrix);

  return qrCode;
}

Example 3

Source File: Encoder.java From QrCodeScanner with GNU General Public License v3.0

4 votes

public static QRCode encode(String content,
                            ErrorCorrectionLevel ecLevel,
                            Map<EncodeHintType,?> hints) throws WriterException {

  // Determine what character encoding has been specified by the caller, if any
  String encoding = DEFAULT_BYTE_MODE_ENCODING;
  boolean hasEncodingHint = hints != null && hints.containsKey(EncodeHintType.CHARACTER_SET);
  if (hasEncodingHint) {
    encoding = hints.get(EncodeHintType.CHARACTER_SET).toString();
  }

  // Pick an encoding mode appropriate for the content. Note that this will not attempt to use
  // multiple modes / segments even if that were more efficient. Twould be nice.
  Mode mode = chooseMode(content, encoding);

  // This will store the header information, like mode and
  // length, as well as "header" segments like an ECI segment.
  BitArray headerBits = new BitArray();

  // Append ECI segment if applicable
  if (mode == Mode.BYTE && (hasEncodingHint || !DEFAULT_BYTE_MODE_ENCODING.equals(encoding))) {
    CharacterSetECI eci = CharacterSetECI.getCharacterSetECIByName(encoding);
    if (eci != null) {
      appendECI(eci, headerBits);
    }
  }

  // (With ECI in place,) Write the mode marker
  appendModeInfo(mode, headerBits);

  // Collect data within the main segment, separately, to count its size if needed. Don't add it to
  // main payload yet.
  BitArray dataBits = new BitArray();
  appendBytes(content, mode, dataBits, encoding);

  Version version;
  if (hints != null && hints.containsKey(EncodeHintType.QR_VERSION)) {
    int versionNumber = Integer.parseInt(hints.get(EncodeHintType.QR_VERSION).toString());
    version = Version.getVersionForNumber(versionNumber);
    int bitsNeeded = calculateBitsNeeded(mode, headerBits, dataBits, version);
    if (!willFit(bitsNeeded, version, ecLevel)) {
      throw new WriterException("Data too big for requested version");
    }
  } else {
    version = recommendVersion(ecLevel, mode, headerBits, dataBits);
  }

  BitArray headerAndDataBits = new BitArray();
  headerAndDataBits.appendBitArray(headerBits);
  // Find "length" of main segment and write it
  int numLetters = mode == Mode.BYTE ? dataBits.getSizeInBytes() : content.length();
  appendLengthInfo(numLetters, version, mode, headerAndDataBits);
  // Put data together into the overall payload
  headerAndDataBits.appendBitArray(dataBits);

  Version.ECBlocks ecBlocks = version.getECBlocksForLevel(ecLevel);
  int numDataBytes = version.getTotalCodewords() - ecBlocks.getTotalECCodewords();

  // Terminate the bits properly.
  terminateBits(numDataBytes, headerAndDataBits);

  // Interleave data bits with error correction code.
  BitArray finalBits = interleaveWithECBytes(headerAndDataBits,
                                             version.getTotalCodewords(),
                                             numDataBytes,
                                             ecBlocks.getNumBlocks());

  QRCode qrCode = new QRCode();

  qrCode.setECLevel(ecLevel);
  qrCode.setMode(mode);
  qrCode.setVersion(version);

  //  Choose the mask pattern and set to "qrCode".
  int dimension = version.getDimensionForVersion();
  ByteMatrix matrix = new ByteMatrix(dimension, dimension);
  int maskPattern = chooseMaskPattern(finalBits, ecLevel, version, matrix);
  qrCode.setMaskPattern(maskPattern);

  // Build the matrix and set it to "qrCode".
  MatrixUtil.buildMatrix(finalBits, ecLevel, version, maskPattern, matrix);
  qrCode.setMatrix(matrix);

  return qrCode;
}

Example 4

Source File: Encoder.java From ZXing-Orient with Apache License 2.0

4 votes

public static QRCode encode(String content,
                            ErrorCorrectionLevel ecLevel,
                            Map<EncodeHintType,?> hints) throws WriterException {

  // Determine what character encoding has been specified by the caller, if any
  String encoding = hints == null ? null : (String) hints.get(EncodeHintType.CHARACTER_SET);
  if (encoding == null) {
    encoding = DEFAULT_BYTE_MODE_ENCODING;
  }

  // Pick an encoding mode appropriate for the content. Note that this will not attempt to use
  // multiple modes / segments even if that were more efficient. Twould be nice.
  Mode mode = chooseMode(content, encoding);

  // This will store the header information, like mode and
  // length, as well as "header" segments like an ECI segment.
  BitArray headerBits = new BitArray();

  // Append ECI segment if applicable
  if (mode == Mode.BYTE && !DEFAULT_BYTE_MODE_ENCODING.equals(encoding)) {
    CharacterSetECI eci = CharacterSetECI.getCharacterSetECIByName(encoding);
    if (eci != null) {
      appendECI(eci, headerBits);
    }
  }

  // (With ECI in place,) Write the mode marker
  appendModeInfo(mode, headerBits);

  // Collect data within the main segment, separately, to count its size if needed. Don't add it to
  // main payload yet.
  BitArray dataBits = new BitArray();
  appendBytes(content, mode, dataBits, encoding);

  // Hard part: need to know version to know how many bits length takes. But need to know how many
  // bits it takes to know version. First we take a guess at version by assuming version will be
  // the minimum, 1:

  int provisionalBitsNeeded = headerBits.getSize()
      + mode.getCharacterCountBits(Version.getVersionForNumber(1))
      + dataBits.getSize();
  Version provisionalVersion = chooseVersion(provisionalBitsNeeded, ecLevel);

  // Use that guess to calculate the right version. I am still not sure this works in 100% of cases.

  int bitsNeeded = headerBits.getSize()
      + mode.getCharacterCountBits(provisionalVersion)
      + dataBits.getSize();
  Version version = chooseVersion(bitsNeeded, ecLevel);

  BitArray headerAndDataBits = new BitArray();
  headerAndDataBits.appendBitArray(headerBits);
  // Find "length" of main segment and write it
  int numLetters = mode == Mode.BYTE ? dataBits.getSizeInBytes() : content.length();
  appendLengthInfo(numLetters, version, mode, headerAndDataBits);
  // Put data together into the overall payload
  headerAndDataBits.appendBitArray(dataBits);

  Version.ECBlocks ecBlocks = version.getECBlocksForLevel(ecLevel);
  int numDataBytes = version.getTotalCodewords() - ecBlocks.getTotalECCodewords();

  // Terminate the bits properly.
  terminateBits(numDataBytes, headerAndDataBits);

  // Interleave data bits with error correction code.
  BitArray finalBits = interleaveWithECBytes(headerAndDataBits,
                                             version.getTotalCodewords(),
                                             numDataBytes,
                                             ecBlocks.getNumBlocks());

  QRCode qrCode = new QRCode();

  qrCode.setECLevel(ecLevel);
  qrCode.setMode(mode);
  qrCode.setVersion(version);

  //  Choose the mask pattern and set to "qrCode".
  int dimension = version.getDimensionForVersion();
  ByteMatrix matrix = new ByteMatrix(dimension, dimension);
  int maskPattern = chooseMaskPattern(finalBits, ecLevel, version, matrix);
  qrCode.setMaskPattern(maskPattern);

  // Build the matrix and set it to "qrCode".
  MatrixUtil.buildMatrix(finalBits, ecLevel, version, maskPattern, matrix);
  qrCode.setMatrix(matrix);

  return qrCode;
}

Example 5

Source File: Encoder.java From analyzer-of-android-for-Apache-Weex with Apache License 2.0

4 votes

public static QRCode encode(String content,
                            ErrorCorrectionLevel ecLevel,
                            Map<EncodeHintType,?> hints) throws WriterException {

  // Determine what character encoding has been specified by the caller, if any
  String encoding = DEFAULT_BYTE_MODE_ENCODING;
  if (hints != null && hints.containsKey(EncodeHintType.CHARACTER_SET)) {
    encoding = hints.get(EncodeHintType.CHARACTER_SET).toString();
  }

  // Pick an encoding mode appropriate for the content. Note that this will not attempt to use
  // multiple modes / segments even if that were more efficient. Twould be nice.
  Mode mode = chooseMode(content, encoding);

  // This will store the header information, like mode and
  // length, as well as "header" segments like an ECI segment.
  BitArray headerBits = new BitArray();

  // Append ECI segment if applicable
  if (mode == Mode.BYTE && !DEFAULT_BYTE_MODE_ENCODING.equals(encoding)) {
    CharacterSetECI eci = CharacterSetECI.getCharacterSetECIByName(encoding);
    if (eci != null) {
      appendECI(eci, headerBits);
    }
  }

  // (With ECI in place,) Write the mode marker
  appendModeInfo(mode, headerBits);

  // Collect data within the main segment, separately, to count its size if needed. Don't add it to
  // main payload yet.
  BitArray dataBits = new BitArray();
  appendBytes(content, mode, dataBits, encoding);

  // Hard part: need to know version to know how many bits length takes. But need to know how many
  // bits it takes to know version. First we take a guess at version by assuming version will be
  // the minimum, 1:

  int provisionalBitsNeeded = headerBits.getSize()
      + mode.getCharacterCountBits(Version.getVersionForNumber(1))
      + dataBits.getSize();
  Version provisionalVersion = chooseVersion(provisionalBitsNeeded, ecLevel);

  // Use that guess to calculate the right version. I am still not sure this works in 100% of cases.

  int bitsNeeded = headerBits.getSize()
      + mode.getCharacterCountBits(provisionalVersion)
      + dataBits.getSize();
  Version version = chooseVersion(bitsNeeded, ecLevel);

  BitArray headerAndDataBits = new BitArray();
  headerAndDataBits.appendBitArray(headerBits);
  // Find "length" of main segment and write it
  int numLetters = mode == Mode.BYTE ? dataBits.getSizeInBytes() : content.length();
  appendLengthInfo(numLetters, version, mode, headerAndDataBits);
  // Put data together into the overall payload
  headerAndDataBits.appendBitArray(dataBits);

  Version.ECBlocks ecBlocks = version.getECBlocksForLevel(ecLevel);
  int numDataBytes = version.getTotalCodewords() - ecBlocks.getTotalECCodewords();

  // Terminate the bits properly.
  terminateBits(numDataBytes, headerAndDataBits);

  // Interleave data bits with error correction code.
  BitArray finalBits = interleaveWithECBytes(headerAndDataBits,
                                             version.getTotalCodewords(),
                                             numDataBytes,
                                             ecBlocks.getNumBlocks());

  QRCode qrCode = new QRCode();

  qrCode.setECLevel(ecLevel);
  qrCode.setMode(mode);
  qrCode.setVersion(version);

  //  Choose the mask pattern and set to "qrCode".
  int dimension = version.getDimensionForVersion();
  ByteMatrix matrix = new ByteMatrix(dimension, dimension);
  int maskPattern = chooseMaskPattern(finalBits, ecLevel, version, matrix);
  qrCode.setMaskPattern(maskPattern);

  // Build the matrix and set it to "qrCode".
  MatrixUtil.buildMatrix(finalBits, ecLevel, version, maskPattern, matrix);
  qrCode.setMatrix(matrix);

  return qrCode;
}

Example 6

Source File: Encoder.java From weex with Apache License 2.0

4 votes

public static QRCode encode(String content,
                            ErrorCorrectionLevel ecLevel,
                            Map<EncodeHintType,?> hints) throws WriterException {

  // Determine what character encoding has been specified by the caller, if any
  String encoding = DEFAULT_BYTE_MODE_ENCODING;
  if (hints != null && hints.containsKey(EncodeHintType.CHARACTER_SET)) {
    encoding = hints.get(EncodeHintType.CHARACTER_SET).toString();
  }

  // Pick an encoding mode appropriate for the content. Note that this will not attempt to use
  // multiple modes / segments even if that were more efficient. Twould be nice.
  Mode mode = chooseMode(content, encoding);

  // This will store the header information, like mode and
  // length, as well as "header" segments like an ECI segment.
  BitArray headerBits = new BitArray();

  // Append ECI segment if applicable
  if (mode == Mode.BYTE && !DEFAULT_BYTE_MODE_ENCODING.equals(encoding)) {
    CharacterSetECI eci = CharacterSetECI.getCharacterSetECIByName(encoding);
    if (eci != null) {
      appendECI(eci, headerBits);
    }
  }

  // (With ECI in place,) Write the mode marker
  appendModeInfo(mode, headerBits);

  // Collect data within the main segment, separately, to count its size if needed. Don't add it to
  // main payload yet.
  BitArray dataBits = new BitArray();
  appendBytes(content, mode, dataBits, encoding);

  // Hard part: need to know version to know how many bits length takes. But need to know how many
  // bits it takes to know version. First we take a guess at version by assuming version will be
  // the minimum, 1:

  int provisionalBitsNeeded = headerBits.getSize()
      + mode.getCharacterCountBits(Version.getVersionForNumber(1))
      + dataBits.getSize();
  Version provisionalVersion = chooseVersion(provisionalBitsNeeded, ecLevel);

  // Use that guess to calculate the right version. I am still not sure this works in 100% of cases.

  int bitsNeeded = headerBits.getSize()
      + mode.getCharacterCountBits(provisionalVersion)
      + dataBits.getSize();
  Version version = chooseVersion(bitsNeeded, ecLevel);

  BitArray headerAndDataBits = new BitArray();
  headerAndDataBits.appendBitArray(headerBits);
  // Find "length" of main segment and write it
  int numLetters = mode == Mode.BYTE ? dataBits.getSizeInBytes() : content.length();
  appendLengthInfo(numLetters, version, mode, headerAndDataBits);
  // Put data together into the overall payload
  headerAndDataBits.appendBitArray(dataBits);

  Version.ECBlocks ecBlocks = version.getECBlocksForLevel(ecLevel);
  int numDataBytes = version.getTotalCodewords() - ecBlocks.getTotalECCodewords();

  // Terminate the bits properly.
  terminateBits(numDataBytes, headerAndDataBits);

  // Interleave data bits with error correction code.
  BitArray finalBits = interleaveWithECBytes(headerAndDataBits,
                                             version.getTotalCodewords(),
                                             numDataBytes,
                                             ecBlocks.getNumBlocks());

  QRCode qrCode = new QRCode();

  qrCode.setECLevel(ecLevel);
  qrCode.setMode(mode);
  qrCode.setVersion(version);

  //  Choose the mask pattern and set to "qrCode".
  int dimension = version.getDimensionForVersion();
  ByteMatrix matrix = new ByteMatrix(dimension, dimension);
  int maskPattern = chooseMaskPattern(finalBits, ecLevel, version, matrix);
  qrCode.setMaskPattern(maskPattern);

  // Build the matrix and set it to "qrCode".
  MatrixUtil.buildMatrix(finalBits, ecLevel, version, maskPattern, matrix);
  qrCode.setMatrix(matrix);

  return qrCode;
}

Example 7

Source File: Encoder.java From barcodescanner-lib-aar with MIT License

4 votes

public static QRCode encode(String content,
                            ErrorCorrectionLevel ecLevel,
                            Map<EncodeHintType,?> hints) throws WriterException {

  // Determine what character encoding has been specified by the caller, if any
  String encoding = DEFAULT_BYTE_MODE_ENCODING;
  if (hints != null && hints.containsKey(EncodeHintType.CHARACTER_SET)) {
    encoding = hints.get(EncodeHintType.CHARACTER_SET).toString();
  }

  // Pick an encoding mode appropriate for the content. Note that this will not attempt to use
  // multiple modes / segments even if that were more efficient. Twould be nice.
  Mode mode = chooseMode(content, encoding);

  // This will store the header information, like mode and
  // length, as well as "header" segments like an ECI segment.
  BitArray headerBits = new BitArray();

  // Append ECI segment if applicable
  if (mode == Mode.BYTE && !DEFAULT_BYTE_MODE_ENCODING.equals(encoding)) {
    CharacterSetECI eci = CharacterSetECI.getCharacterSetECIByName(encoding);
    if (eci != null) {
      appendECI(eci, headerBits);
    }
  }

  // (With ECI in place,) Write the mode marker
  appendModeInfo(mode, headerBits);

  // Collect data within the main segment, separately, to count its size if needed. Don't add it to
  // main payload yet.
  BitArray dataBits = new BitArray();
  appendBytes(content, mode, dataBits, encoding);

  Version version;
  if (hints != null && hints.containsKey(EncodeHintType.QR_VERSION)) {
    int versionNumber = Integer.parseInt(hints.get(EncodeHintType.QR_VERSION).toString());
    version = Version.getVersionForNumber(versionNumber);
    int bitsNeeded = calculateBitsNeeded(mode, headerBits, dataBits, version);
    if (!willFit(bitsNeeded, version, ecLevel)) {
      throw new WriterException("Data too big for requested version");
    }
  } else {
    version = recommendVersion(ecLevel, mode, headerBits, dataBits);
  }

  BitArray headerAndDataBits = new BitArray();
  headerAndDataBits.appendBitArray(headerBits);
  // Find "length" of main segment and write it
  int numLetters = mode == Mode.BYTE ? dataBits.getSizeInBytes() : content.length();
  appendLengthInfo(numLetters, version, mode, headerAndDataBits);
  // Put data together into the overall payload
  headerAndDataBits.appendBitArray(dataBits);

  Version.ECBlocks ecBlocks = version.getECBlocksForLevel(ecLevel);
  int numDataBytes = version.getTotalCodewords() - ecBlocks.getTotalECCodewords();

  // Terminate the bits properly.
  terminateBits(numDataBytes, headerAndDataBits);

  // Interleave data bits with error correction code.
  BitArray finalBits = interleaveWithECBytes(headerAndDataBits,
                                             version.getTotalCodewords(),
                                             numDataBytes,
                                             ecBlocks.getNumBlocks());

  QRCode qrCode = new QRCode();

  qrCode.setECLevel(ecLevel);
  qrCode.setMode(mode);
  qrCode.setVersion(version);

  //  Choose the mask pattern and set to "qrCode".
  int dimension = version.getDimensionForVersion();
  ByteMatrix matrix = new ByteMatrix(dimension, dimension);
  int maskPattern = chooseMaskPattern(finalBits, ecLevel, version, matrix);
  qrCode.setMaskPattern(maskPattern);

  // Build the matrix and set it to "qrCode".
  MatrixUtil.buildMatrix(finalBits, ecLevel, version, maskPattern, matrix);
  qrCode.setMatrix(matrix);

  return qrCode;
}

Example 8

Source File: Encoder.java From reacteu-app with MIT License

4 votes

public static QRCode encode(String content,
                            ErrorCorrectionLevel ecLevel,
                            Map<EncodeHintType,?> hints) throws WriterException {

  // Determine what character encoding has been specified by the caller, if any
  String encoding = hints == null ? null : (String) hints.get(EncodeHintType.CHARACTER_SET);
  if (encoding == null) {
    encoding = DEFAULT_BYTE_MODE_ENCODING;
  }

  // Pick an encoding mode appropriate for the content. Note that this will not attempt to use
  // multiple modes / segments even if that were more efficient. Twould be nice.
  Mode mode = chooseMode(content, encoding);

  // This will store the header information, like mode and
  // length, as well as "header" segments like an ECI segment.
  BitArray headerBits = new BitArray();

  // Append ECI segment if applicable
  if (mode == Mode.BYTE && !DEFAULT_BYTE_MODE_ENCODING.equals(encoding)) {
    CharacterSetECI eci = CharacterSetECI.getCharacterSetECIByName(encoding);
    if (eci != null) {
      appendECI(eci, headerBits);
    }
  }

  // (With ECI in place,) Write the mode marker
  appendModeInfo(mode, headerBits);

  // Collect data within the main segment, separately, to count its size if needed. Don't add it to
  // main payload yet.
  BitArray dataBits = new BitArray();
  appendBytes(content, mode, dataBits, encoding);

  // Hard part: need to know version to know how many bits length takes. But need to know how many
  // bits it takes to know version. First we take a guess at version by assuming version will be
  // the minimum, 1:

  int provisionalBitsNeeded = headerBits.getSize()
      + mode.getCharacterCountBits(Version.getVersionForNumber(1))
      + dataBits.getSize();
  Version provisionalVersion = chooseVersion(provisionalBitsNeeded, ecLevel);

  // Use that guess to calculate the right version. I am still not sure this works in 100% of cases.

  int bitsNeeded = headerBits.getSize()
      + mode.getCharacterCountBits(provisionalVersion)
      + dataBits.getSize();
  Version version = chooseVersion(bitsNeeded, ecLevel);

  BitArray headerAndDataBits = new BitArray();
  headerAndDataBits.appendBitArray(headerBits);
  // Find "length" of main segment and write it
  int numLetters = mode == Mode.BYTE ? dataBits.getSizeInBytes() : content.length();
  appendLengthInfo(numLetters, version, mode, headerAndDataBits);
  // Put data together into the overall payload
  headerAndDataBits.appendBitArray(dataBits);

  Version.ECBlocks ecBlocks = version.getECBlocksForLevel(ecLevel);
  int numDataBytes = version.getTotalCodewords() - ecBlocks.getTotalECCodewords();

  // Terminate the bits properly.
  terminateBits(numDataBytes, headerAndDataBits);

  // Interleave data bits with error correction code.
  BitArray finalBits = interleaveWithECBytes(headerAndDataBits,
                                             version.getTotalCodewords(),
                                             numDataBytes,
                                             ecBlocks.getNumBlocks());

  QRCode qrCode = new QRCode();

  qrCode.setECLevel(ecLevel);
  qrCode.setMode(mode);
  qrCode.setVersion(version);

  //  Choose the mask pattern and set to "qrCode".
  int dimension = version.getDimensionForVersion();
  ByteMatrix matrix = new ByteMatrix(dimension, dimension);
  int maskPattern = chooseMaskPattern(finalBits, ecLevel, version, matrix);
  qrCode.setMaskPattern(maskPattern);

  // Build the matrix and set it to "qrCode".
  MatrixUtil.buildMatrix(finalBits, ecLevel, version, maskPattern, matrix);
  qrCode.setMatrix(matrix);

  return qrCode;
}

Example 9

Source File: Encoder.java From RipplePower with Apache License 2.0

4 votes

public static QRCode encode(String content, ErrorCorrectionLevel ecLevel, Map<EncodeHintType, ?> hints)
		throws WriterException {

	// Determine what character encoding has been specified by the caller,
	// if any
	String encoding = hints == null ? null : (String) hints.get(EncodeHintType.CHARACTER_SET);
	if (encoding == null) {
		encoding = DEFAULT_BYTE_MODE_ENCODING;
	}

	// Pick an encoding mode appropriate for the content. Note that this
	// will not attempt to use
	// multiple modes / segments even if that were more efficient. Twould be
	// nice.
	Mode mode = chooseMode(content, encoding);

	// This will store the header information, like mode and
	// length, as well as "header" segments like an ECI segment.
	BitArray headerBits = new BitArray();

	// Append ECI segment if applicable
	if (mode == Mode.BYTE && !DEFAULT_BYTE_MODE_ENCODING.equals(encoding)) {
		CharacterSetECI eci = CharacterSetECI.getCharacterSetECIByName(encoding);
		if (eci != null) {
			appendECI(eci, headerBits);
		}
	}

	// (With ECI in place,) Write the mode marker
	appendModeInfo(mode, headerBits);

	// Collect data within the main segment, separately, to count its size
	// if needed. Don't add it to
	// main payload yet.
	BitArray dataBits = new BitArray();
	appendBytes(content, mode, dataBits, encoding);

	// Hard part: need to know version to know how many bits length takes.
	// But need to know how many
	// bits it takes to know version. First we take a guess at version by
	// assuming version will be
	// the minimum, 1:

	int provisionalBitsNeeded = headerBits.getSize() + mode.getCharacterCountBits(Version.getVersionForNumber(1))
			+ dataBits.getSize();
	Version provisionalVersion = chooseVersion(provisionalBitsNeeded, ecLevel);

	// Use that guess to calculate the right version. I am still not sure
	// this works in 100% of cases.

	int bitsNeeded = headerBits.getSize() + mode.getCharacterCountBits(provisionalVersion) + dataBits.getSize();
	Version version = chooseVersion(bitsNeeded, ecLevel);

	BitArray headerAndDataBits = new BitArray();
	headerAndDataBits.appendBitArray(headerBits);
	// Find "length" of main segment and write it
	int numLetters = mode == Mode.BYTE ? dataBits.getSizeInBytes() : content.length();
	appendLengthInfo(numLetters, version, mode, headerAndDataBits);
	// Put data together into the overall payload
	headerAndDataBits.appendBitArray(dataBits);

	Version.ECBlocks ecBlocks = version.getECBlocksForLevel(ecLevel);
	int numDataBytes = version.getTotalCodewords() - ecBlocks.getTotalECCodewords();

	// Terminate the bits properly.
	terminateBits(numDataBytes, headerAndDataBits);

	// Interleave data bits with error correction code.
	BitArray finalBits = interleaveWithECBytes(headerAndDataBits, version.getTotalCodewords(), numDataBytes,
			ecBlocks.getNumBlocks());

	QRCode qrCode = new QRCode();

	qrCode.setECLevel(ecLevel);
	qrCode.setMode(mode);
	qrCode.setVersion(version);

	// Choose the mask pattern and set to "qrCode".
	int dimension = version.getDimensionForVersion();
	ByteMatrix matrix = new ByteMatrix(dimension, dimension);
	int maskPattern = chooseMaskPattern(finalBits, ecLevel, version, matrix);
	qrCode.setMaskPattern(maskPattern);

	// Build the matrix and set it to "qrCode".
	MatrixUtil.buildMatrix(finalBits, ecLevel, version, maskPattern, matrix);
	qrCode.setMatrix(matrix);

	return qrCode;
}

Example 10

Source File: Encoder.java From barterli_android with Apache License 2.0

4 votes

public static void encode(String content, ErrorCorrectionLevel ecLevel, Map<EncodeHintType, ?> hints, QRCode qrCode) throws WriterException {

        String encoding = hints == null ? null : (String) hints.get(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.
        BitArray dataBits = new BitArray();
        appendBytes(content, mode, dataBits, encoding);
        // Step 3: Initialize QR code that can contain "dataBits".
        int numInputBits = dataBits.getSize();
        initQRCode(numInputBits, ecLevel, mode, qrCode);

        // Step 4: Build another bit vector that contains header and data.
        BitArray headerAndDataBits = new BitArray();

        // 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 == Mode.BYTE ? dataBits.getSizeInBytes() : content.length();
        appendLengthInfo(numLetters, qrCode.getVersion(), mode, headerAndDataBits);
        headerAndDataBits.appendBitArray(dataBits);

        // Step 5: Terminate the bits properly.
        terminateBits(qrCode.getNumDataBytes(), headerAndDataBits);

        // Step 6: Interleave data bits with error correction code.
        BitArray finalBits = new BitArray();
        interleaveWithECBytes(headerAndDataBits, qrCode.getNumTotalBytes(), qrCode.getNumDataBytes(), qrCode.getNumRSBlocks(), finalBits);

        // Step 7: Choose the mask pattern and set to "qrCode".
        ByteMatrix matrix = new ByteMatrix(qrCode.getMatrixWidth(), qrCode.getMatrixWidth());
        qrCode.setMaskPattern(chooseMaskPattern(finalBits, ecLevel, qrCode.getVersion(), matrix));

        // Step 8. Build the matrix and set it to "qrCode".
        MatrixUtil.buildMatrix(finalBits, ecLevel, qrCode.getVersion(), qrCode.getMaskPattern(), matrix);
        qrCode.setMatrix(matrix);
        // Step 9. Make sure we have a valid QR Code.
        if (!qrCode.isValid()) {
            throw new WriterException("Invalid QR code: " + qrCode.toString());
        }
    }

Example 11

Source File: Encoder.java From android-quick-response-code with Apache License 2.0

4 votes

public static void encode(String content, ErrorCorrectionLevel ecLevel, Map<EncodeHintType, ?> hints, QRCode qrCode) throws WriterException {

        String encoding = hints == null ? null : (String) hints.get(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.
        BitArray dataBits = new BitArray();
        appendBytes(content, mode, dataBits, encoding);
        // Step 3: Initialize QR code that can contain "dataBits".
        int numInputBits = dataBits.getSize();
        initQRCode(numInputBits, ecLevel, mode, qrCode);

        // Step 4: Build another bit vector that contains header and data.
        BitArray headerAndDataBits = new BitArray();

        // 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 == Mode.BYTE ? dataBits.getSizeInBytes() : content.length();
        appendLengthInfo(numLetters, qrCode.getVersion(), mode, headerAndDataBits);
        headerAndDataBits.appendBitArray(dataBits);

        // Step 5: Terminate the bits properly.
        terminateBits(qrCode.getNumDataBytes(), headerAndDataBits);

        // Step 6: Interleave data bits with error correction code.
        BitArray finalBits = new BitArray();
        interleaveWithECBytes(headerAndDataBits, qrCode.getNumTotalBytes(), qrCode.getNumDataBytes(), qrCode.getNumRSBlocks(), finalBits);

        // Step 7: Choose the mask pattern and set to "qrCode".
        ByteMatrix matrix = new ByteMatrix(qrCode.getMatrixWidth(), qrCode.getMatrixWidth());
        qrCode.setMaskPattern(chooseMaskPattern(finalBits, ecLevel, qrCode.getVersion(), matrix));

        // Step 8. Build the matrix and set it to "qrCode".
        MatrixUtil.buildMatrix(finalBits, ecLevel, qrCode.getVersion(), qrCode.getMaskPattern(), matrix);
        qrCode.setMatrix(matrix);
        // Step 9. Make sure we have a valid QR Code.
        if (!qrCode.isValid()) {
            throw new WriterException("Invalid QR code: " + qrCode.toString());
        }
    }