Class CodaBarReader

java.lang.Object
com.google.zxing.oned.OneDReader
com.google.zxing.oned.CodaBarReader
All Implemented Interfaces:
Reader

public final class CodaBarReader extends OneDReader

Decodes Codabar barcodes.

  • Field Details

    • MAX_ACCEPTABLE

      private static final float MAX_ACCEPTABLE
      See Also:
    • PADDING

      private static final float PADDING
      See Also:
    • ALPHABET_STRING

      private static final String ALPHABET_STRING
      See Also:
    • ALPHABET

      static final char[] ALPHABET
    • CHARACTER_ENCODINGS

      static final int[] CHARACTER_ENCODINGS
      These represent the encodings of characters, as patterns of wide and narrow bars. The 7 least-significant bits of each int correspond to the pattern of wide and narrow, with 1s representing "wide" and 0s representing narrow.
    • MIN_CHARACTER_LENGTH

      private static final int MIN_CHARACTER_LENGTH
      See Also:
    • STARTEND_ENCODING

      private static final char[] STARTEND_ENCODING
    • decodeRowResult

      private final StringBuilder decodeRowResult
    • counters

      private int[] counters
    • counterLength

      private int counterLength
  • Constructor Details

    • CodaBarReader

      public CodaBarReader()
  • Method Details

    • decodeRow

      public Result decodeRow(int rowNumber, BitArray row, Map<DecodeHintType,?> hints) throws NotFoundException
      Description copied from class: OneDReader

      Attempts to decode a one-dimensional barcode format given a single row of an image.

      Specified by:
      decodeRow in class OneDReader
      Parameters:
      rowNumber - row number from top of the row
      row - the black/white pixel data of the row
      hints - decode hints
      Returns:
      Result containing encoded string and start/end of barcode
      Throws:
      NotFoundException - if no potential barcode is found
    • validatePattern

      private void validatePattern(int start) throws NotFoundException
      Throws:
      NotFoundException
    • setCounters

      private void setCounters(BitArray row) throws NotFoundException
      Records the size of all runs of white and black pixels, starting with white. This is just like recordPattern, except it records all the counters, and uses our builtin "counters" member for storage.
      Parameters:
      row - row to count from
      Throws:
      NotFoundException
    • counterAppend

      private void counterAppend(int e)
    • findStartPattern

      private int findStartPattern() throws NotFoundException
      Throws:
      NotFoundException
    • arrayContains

      static boolean arrayContains(char[] array, char key)
    • toNarrowWidePattern

      private int toNarrowWidePattern(int position)