com.itextpdf.kernel.pdf.filters

Class FlateDecodeFilter

java.lang.Object

com.itextpdf.kernel.pdf.filters.FlateDecodeFilter

All Implemented Interfaces:

IFilterHandler

public class FlateDecodeFilter
extends Object
implements IFilterHandler

Handles FlateDecode filter.

Constructor Summary

Constructors

Constructor and Description
FlateDecodeFilter()

Method Summary

Modifier and Type	Method and Description
byte[]	decode(byte[] b, PdfName filterName, PdfObject decodeParams, PdfDictionary streamDictionary) Decode the byte[] using the provided filterName.
static byte[]	decodePredictor(byte[] in, PdfObject decodeParams)
static byte[]	flateDecode(byte[] in, boolean strict) A helper to flateDecode.

Methods inherited from class java.lang.Object

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

Constructor Detail

FlateDecodeFilter

public FlateDecodeFilter()

Method Detail

decode

public byte[] decode(byte[] b,
                     PdfName filterName,
                     PdfObject decodeParams,
                     PdfDictionary streamDictionary)

Description copied from interface: IFilterHandler

Decode the byte[] using the provided filterName.

Specified by:

decode in interface IFilterHandler

Parameters:

b - the bytes that need to be decoded

filterName - PdfName of the filter

decodeParams - decode parameters

streamDictionary - the dictionary of the stream. Can contain additional information needed to decode the byte[].

Returns:

decoded byte array

flateDecode

public static byte[] flateDecode(byte[] in,
                                 boolean strict)

A helper to flateDecode.

Parameters:

in - the input data

strict - true to read a correct stream. false to try to read a corrupted stream.

Returns:

the decoded data

decodePredictor

public static byte[] decodePredictor(byte[] in,
                                     PdfObject decodeParams)

Parameters:

in - Input byte array.

decodeParams - PdfDictionary of decodeParams.

Returns:

a byte array