Class TIFFFaxCompressor

java.lang.Object
com.github.jaiimageio.plugins.tiff.TIFFCompressor
com.github.jaiimageio.impl.plugins.tiff.TIFFFaxCompressor
Direct Known Subclasses:
TIFFRLECompressor, TIFFT4Compressor, TIFFT6Compressor
public abstract class TIFFFaxCompressor extends TIFFCompressor

  • Field Details

    • WHITE

      public static final int WHITE
      The CCITT numerical definition of white.
      See Also:

    • BLACK

      public static final int BLACK
      The CCITT numerical definition of black.
      See Also:

    • byteTable

      public static byte[] byteTable

    • termCodesBlack

      public static int[] termCodesBlack
      Terminating codes for black runs.

    • termCodesWhite

      public static int[] termCodesWhite
      Terminating codes for white runs.

    • makeupCodesBlack

      public static int[] makeupCodesBlack
      Make-up codes for black runs.

    • makeupCodesWhite

      public static int[] makeupCodesWhite
      Make-up codes for white runs.

    • passMode

      public static int[] passMode
      Pass mode table.

    • vertMode

      public static int[] vertMode
      Vertical mode table.

    • horzMode

      public static int[] horzMode
      Horizontal mode table.

    • termCodes

      public static int[][] termCodes
      Black and white terminating code table.

    • makeupCodes

      public static int[][] makeupCodes
      Black and white make-up code table.

    • pass

      public static int[][] pass
      Black and white pass mode table.

    • vert

      public static int[][] vert
      Black and white vertical mode table.

    • horz

      public static int[][] horz
      Black and white horizontal mode table.

    • inverseFill

      public boolean inverseFill
      Whether bits are inserted in reverse order (TIFF FillOrder 2).

    • bits

      public int bits
      Output bit buffer.

    • ndex

      public int ndex
      Number of bits in the output bit buffer.

  • Constructor Details

    • TIFFFaxCompressor

      protected TIFFFaxCompressor(String compressionType, int compressionTagValue, boolean isCompressionLossless)
      Constructor. The superclass constructor is merely invoked with the same parameters.

  • Method Details

    • setMetadata

      public void setMetadata(IIOMetadata metadata)
      Sets the value of the metadata field.

      The implementation in this class also sets local options from the FILL_ORDER field if it exists.

      Overrides:
      setMetadata in class TIFFCompressor
      Parameters:
      metadata - the IIOMetadata object for the image being written.
      See Also:

    • nextState

      public int nextState(byte[] data, int base, int bitOffset, int maxOffset)
      Return min of maxOffset or offset of first pixel different from pixel at bitOffset.

    • initBitBuf

      public void initBitBuf()
      Initialize bit buffer machinery.

    • add1DBits

      public int add1DBits(byte[] buf, int where, int count, int color)
      Get code for run and add to compressed bitstream.

    • add2DBits

      public int add2DBits(byte[] buf, int where, int[][] mode, int entry)
      Place entry from mode table into compressed bitstream.

    • addEOL

      public int addEOL(boolean is1DMode, boolean addFill, boolean add1, byte[] buf, int where)
      Add an End-of-Line (EOL == 0x001) to the compressed bitstream with optional byte alignment.

    • addEOFB

      public int addEOFB(byte[] buf, int where)
      Add an End-of-Facsimile-Block (EOFB == 0x001001) to the compressed bitstream.

    • encode1D

      public int encode1D(byte[] data, int rowOffset, int colOffset, int rowLength, byte[] compData, int compOffset)
      One-dimensionally encode a row of data using CCITT Huffman compression. The bit buffer should be initialized as required before invoking this method and should be flushed after the method returns. The fill order is always highest-order to lowest-order bit so the calling routine should handle bit inversion.