## com.lowagie.text.pdf.codec
Class TIFFLZWDecoder

    java.lang.Object
      com.lowagie.text.pdf.codec.TIFFLZWDecoder

    public class TIFFLZWDecoder

extends java.lang.Object

A class for performing LZW decoding.

Field Summary
`(package private) int[]` `andTable`
`(package private) int` `bitPointer`
`(package private) int` `bitsToGet`
`(package private) int` `bytePointer`
`(package private) byte[]` `data`
`(package private) int` `dstIndex`
`(package private) int` `h`
`(package private) int` `nextBits`
`(package private) int` `nextData`
`(package private) int` `predictor`
`(package private) int` `samplesPerPixel`
`(package private) byte[][]` `stringTable`
`(package private) int` `tableIndex`
`(package private) byte[]` `uncompData`
`(package private) int` `w`

Constructor Summary
`TIFFLZWDecoder(int w, int predictor, int samplesPerPixel)`

Method Summary
`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)` Append `newString` to the end of `oldString`.
`byte[]` `decode(byte[] data, byte[] uncompData, int h)` Method to decode LZW compressed data.
`int` `getNextCode()`
`void` `initializeStringTable()` Initialize the string table.
`void` `writeString(byte[] string)` Write out the string just uncompressed.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

### stringTable

    byte[][] stringTable

### data

    byte[] data

### uncompData

    byte[] uncompData

### tableIndex

    int tableIndex

### bitsToGet

    int bitsToGet

### bytePointer

    int bytePointer

### bitPointer

    int bitPointer

### dstIndex

    int dstIndex

### w

    int w

### h

    int h

### predictor

    int predictor

### samplesPerPixel

    int samplesPerPixel

### nextData

    int nextData

### nextBits

    int nextBits

### andTable

    int[] andTable

Constructor Detail

### TIFFLZWDecoder

    public TIFFLZWDecoder(int w,
                          int predictor,
                          int samplesPerPixel)

Method Detail

### decode

    public byte[] decode(byte[] data,
                         byte[] uncompData,
                         int h)

  Method to decode LZW compressed data.

  Parameters:
    `data` - The compressed data.
    `uncompData` - Array to return the uncompressed data in.
    `h` - The number of rows the compressed data contains.

### 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)

  Append `newString` to the end of `oldString`.

### getNextCode

    public int getNextCode()