Class TIFFFaxDecompressor

java.lang.Object
com.github.jaiimageio.plugins.tiff.TIFFDecompressor
com.github.jaiimageio.impl.plugins.tiff.TIFFFaxDecompressor

public class TIFFFaxDecompressor extends TIFFDecompressor
  • Field Details

    • fillOrder

      protected int fillOrder
      The logical order of bits within a byte.
       1 = MSB-to-LSB
       2 = LSB-to-MSB (flipped)
       
    • compression

      protected int compression
    • t4Options

      private int t4Options
    • t6Options

      private int t6Options
    • uncompressedMode

      protected int uncompressedMode
      Uncompressed mode flag: 1 if uncompressed, 0 if not.
    • fillBits

      protected int fillBits
      EOL padding flag: 1 if fill bits have been added before an EOL such that the EOL ends on a byte boundary, 0 otherwise.
    • oneD

      protected int oneD
      Coding dimensionality: 1 for 2-dimensional, 0 for 1-dimensional.
    • data

      private byte[] data
    • bitPointer

      private int bitPointer
    • bytePointer

      private int bytePointer
    • buffer

      private byte[] buffer
    • w

      private int w
    • h

      private int h
    • bitsPerScanline

      private int bitsPerScanline
    • lineBitNum

      private int lineBitNum
    • changingElemSize

      private int changingElemSize
    • prevChangingElems

      private int[] prevChangingElems
    • currChangingElems

      private int[] currChangingElems
    • lastChangingElement

      private int lastChangingElement
    • table1

      static int[] table1
    • table2

      static int[] table2
    • flipTable

      static byte[] flipTable
    • white

      static short[] white
    • additionalMakeup

      static short[] additionalMakeup
    • initBlack

      static short[] initBlack
    • twoBitBlack

      static short[] twoBitBlack
    • black

      static short[] black
    • twoDCodes

      static byte[] twoDCodes
  • Constructor Details

    • TIFFFaxDecompressor

      public TIFFFaxDecompressor()
  • Method Details

    • beginDecoding

      public void beginDecoding()
      Invokes the superclass method and then sets instance variables on the basis of the metadata set on this decompressor.
      Overrides:
      beginDecoding in class TIFFDecompressor
    • decodeRaw

      public void decodeRaw(byte[] b, int dstOffset, int pixelBitStride, int scanlineStride) throws IOException
      Description copied from class: TIFFDecompressor
      Decodes the source data into the provided byte array b, starting at the offset given by dstOffset. Each pixel occupies bitsPerPixel bits, with no padding between pixels. Scanlines are separated by scanlineStride bytes.
      Specified by:
      decodeRaw in class TIFFDecompressor
      Parameters:
      b - a byte array to be written.
      dstOffset - the starting offset in b to be written.
      pixelBitStride - the number of bits for each pixel.
      scanlineStride - the number of bytes to advance between that starting pixels of each scanline.
      Throws:
      IOException - if an error occurs reading from the source ImageInputStream.
    • decodeRLE

      public void decodeRLE() throws IIOException
      Throws:
      IIOException
    • decodeNextScanline

      public void decodeNextScanline(int lineIndex) throws IIOException
      Throws:
      IIOException
    • decodeT4

      public void decodeT4() throws IIOException
      Throws:
      IIOException
    • decodeT6

      public void decodeT6() throws IIOException
      Throws:
      IIOException
    • setToBlack

      private void setToBlack(int bitNum, int numBits)
    • decodeWhiteCodeWord

      private int decodeWhiteCodeWord() throws IIOException
      Throws:
      IIOException
    • decodeBlackCodeWord

      private int decodeBlackCodeWord() throws IIOException
      Throws:
      IIOException
    • findNextLine

      private int findNextLine() throws IIOException, EOFException
      Throws:
      IIOException
      EOFException
    • getNextChangingElement

      private void getNextChangingElement(int a0, boolean isWhite, int[] ret) throws IIOException
      Throws:
      IIOException
    • nextNBits

      private int nextNBits(int bitsToGet) throws IIOException
      Throws:
      IIOException
    • nextLesserThan8Bits

      private int nextLesserThan8Bits(int bitsToGet) throws IIOException
      Throws:
      IIOException
    • updatePointer

      private void updatePointer(int bitsToMoveBack)
    • warning

      private void warning(String msg)