Method Details

• numBitsDiffering

  static int numBitsDiffering(int a, int b)

  Counts the bits that differ between the two format info bit patterns.

  Parameters:

  a - first of the two format info bit patterns to compare

  b - second of the two format info bit patterns to compare

  Returns:

  number of differing bits

• decodeFormatInformation

  static FormatInformation decodeFormatInformation(int maskedFormatInfo1, int maskedFormatInfo2)

  to establish best match if doesn't seem to match any known pattern

  Parameters:

  maskedFormatInfo1 - format info indicator, with mask still applied

  maskedFormatInfo2 - second copy of same info; both are checked at the same time

  Returns:

  information about the format it specifies, or null

• getErrorCorrectionLevel

  ErrorCorrectionLevel getErrorCorrectionLevel()

  Error correction level decoded from format info bits.

  Returns:

  the level selected by bits 3 and 4 of the format information

• getDataMask

  byte getDataMask()

  Data mask reference decoded from format info bits.

  Returns:

  the 0-7 mask pattern reference taken from the bottom three bits

• hashCode

  public int hashCode()

  Hash of the error correction level combined with the data mask.

  Overrides:

  hashCode in class Object

• equals

  public boolean equals(Object o)

  True if the other object has the same error correction level and data mask.

  Overrides:

  equals in class Object