Package com.itextpdf.text.pdf.codec

Class TIFFFaxDecompressor

  • public class TIFFFaxDecompressor
extends java.lang.Object
    Class that can decompress TIFF files.
    Since:
    5.0.3

    • Field Detail

      • 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

      • fails

        public int fails

      • 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 Detail

      • TIFFFaxDecompressor

        public TIFFFaxDecompressor()

    • Method Detail

      • SetOptions

        public void SetOptions​(int fillOrder,
                       int compression,
                       int t4Options,
                       int t6Options)
        Invokes the superclass method and then sets instance variables on the basis of the metadata set on this decompressor.

      • decodeRaw

        public void decodeRaw​(byte[] buffer,
                      byte[] compData,
                      int w,
                      int h)

      • decodeRLE

        public void decodeRLE()

      • decodeNextScanline

        public void decodeNextScanline()

      • decodeT4

        public void decodeT4()

      • decodeT6

        public void decodeT6()

      • setToBlack

        private void setToBlack​(int bitNum,
                        int numBits)

      • decodeWhiteCodeWord

        private int decodeWhiteCodeWord()

      • decodeBlackCodeWord

        private int decodeBlackCodeWord()

      • findNextLine

        private int findNextLine()

      • getNextChangingElement

        private void getNextChangingElement​(int a0,
                                    boolean isWhite,
                                    int[] ret)

      • nextNBits

        private int nextNBits​(int bitsToGet)

      • nextLesserThan8Bits

        private int nextLesserThan8Bits​(int bitsToGet)

      • updatePointer

        private void updatePointer​(int bitsToMoveBack)