Package org.apache.pdfbox.filter

Class FlateFilter

java.lang.Object

org.apache.pdfbox.filter.Filter

org.apache.pdfbox.filter.FlateFilter

final class FlateFilter
extends Filter

Decompresses data encoded using the zlib/deflate compression method, reproducing the original text or binary data.

Field Summary

Fields

Modifier and Type	Field	Description
private static final org.apache.commons.logging.Log	LOG

Fields inherited from class org.apache.pdfbox.filter.Filter

SYSPROP_DEFLATELEVEL

Constructor Summary

Constructors

Constructor	Description
FlateFilter()

Method Summary

Modifier and Type	Method	Description
DecodeResult	decode(InputStream encoded, OutputStream decoded, COSDictionary parameters, int index)	Decodes data, producing the original non-encoded data.
private void	decompress(InputStream in, OutputStream out)
protected void	encode(InputStream input, OutputStream encoded, COSDictionary parameters)

Methods inherited from class org.apache.pdfbox.filter.Filter

decode, encode, findImageReader, getCompressionLevel, getDecodeParams

Methods inherited from class java.lang.Object

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

Field Details

LOG

private static final org.apache.commons.logging.Log LOG

Constructor Details

FlateFilter

FlateFilter()

Method Details

decode

public DecodeResult decode(InputStream encoded,
 OutputStream decoded,
 COSDictionary parameters,
 int index)
                    throws IOException

Description copied from class: Filter

Decodes data, producing the original non-encoded data.

Specified by:

decode in class Filter

Parameters:

encoded - the encoded byte stream

decoded - the stream where decoded data will be written

parameters - the parameters used for decoding

index - the index to the filter being decoded

Returns:

repaired parameters dictionary, or the original parameters dictionary

Throws:

IOException - if the stream cannot be decoded

decompress

private void decompress(InputStream in,
 OutputStream out)
                 throws IOException,
DataFormatException

Throws:

IOException

DataFormatException

encode

protected void encode(InputStream input,
 OutputStream encoded,
 COSDictionary parameters)
               throws IOException

Specified by:

encode in class Filter

Throws:

IOException