Package org.apache.pdfbox.jbig2.decoder.arithmetic

Class ArithmeticDecoder

  • public class ArithmeticDecoder
extends java.lang.Object
    This class represents the arithmetic decoder, described in ISO/IEC 14492:2001 in E.3

    • Field Summary

      Fields 
      Modifier and Type Field Description
      private int a  
      private int b  
      private long c  
      private int ct  
      private javax.imageio.stream.ImageInputStream iis  
      private static int[][] QE  
      private long streamPos0  

    • Constructor Summary

      Constructors 
      Constructor Description
      ArithmeticDecoder​(javax.imageio.stream.ImageInputStream iis)  

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      private void byteIn()  
      int decode​(CX cx)  
      (package private) int getA()  
      (package private) long getC()  
      private void init()  
      private int lpsExchange​(CX cx, int icx, int qeValue)  
      private int mpsExchange​(CX cx, int icx)  
      private void renormalize()  

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Field Detail

      • QE

        private static final int[][] QE

      • a

        private int a

      • c

        private long c

      • ct

        private int ct

      • b

        private int b

      • streamPos0

        private long streamPos0

      • iis

        private final javax.imageio.stream.ImageInputStream iis

    • Constructor Detail

      • ArithmeticDecoder

        public ArithmeticDecoder​(javax.imageio.stream.ImageInputStream iis)
                  throws java.io.IOException
        Throws:
        java.io.IOException

    • Method Detail

      • init

        private void init()
           throws java.io.IOException
        Throws:
        java.io.IOException

      • decode

        public int decode​(CX cx)
           throws java.io.IOException
        Throws:
        java.io.IOException

      • byteIn

        private void byteIn()
             throws java.io.IOException
        Throws:
        java.io.IOException

      • renormalize

        private void renormalize()
                  throws java.io.IOException
        Throws:
        java.io.IOException

      • mpsExchange

        private int mpsExchange​(CX cx,
                        int icx)

      • lpsExchange

        private int lpsExchange​(CX cx,
                        int icx,
                        int qeValue)

      • getA

        int getA()

      • getC

        long getC()