Package com.itextpdf.text.pdf
Class LZWDecoder
- java.lang.Object
-
- com.itextpdf.text.pdf.LZWDecoder
-
public class LZWDecoder extends java.lang.Object
A class for performing LZW decoding.
-
-
Field Summary
Fields Modifier and Type Field Description (package private) int[]
andTable
(package private) int
bitPointer
(package private) int
bitsToGet
(package private) int
bytePointer
(package private) byte[]
data
(package private) int
nextBits
(package private) int
nextData
(package private) byte[][]
stringTable
(package private) int
tableIndex
(package private) java.io.OutputStream
uncompData
-
Constructor Summary
Constructors Constructor Description LZWDecoder()
-
Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
addStringToTable(byte[] string)
Add a new string to the string table.void
addStringToTable(byte[] oldString, byte newString)
Add a new string to the string table.byte[]
composeString(byte[] oldString, byte newString)
AppendnewString
to the end ofoldString
.void
decode(byte[] data, java.io.OutputStream uncompData)
Method to decode LZW compressed data.int
getNextCode()
void
initializeStringTable()
Initialize the string table.void
writeString(byte[] string)
Write out the string just uncompressed.
-
-
-
Method Detail
-
decode
public void decode(byte[] data, java.io.OutputStream uncompData)
Method to decode LZW compressed data.- Parameters:
data
- The compressed data.uncompData
- Array to return the uncompressed data in.
-
initializeStringTable
public void initializeStringTable()
Initialize the string table.
-
writeString
public void writeString(byte[] string)
Write out the string just uncompressed.
-
addStringToTable
public void addStringToTable(byte[] oldString, byte newString)
Add a new string to the string table.
-
addStringToTable
public void addStringToTable(byte[] string)
Add a new string to the string table.
-
composeString
public byte[] composeString(byte[] oldString, byte newString)
AppendnewString
to the end ofoldString
.
-
getNextCode
public int getNextCode()
-
-