Package com.pd4ml.pdf.cos.filter

Interface Filter

All Known Implementing Classes:

ASCII85DecodeFilter, ASCIIHexDecodeFilter, FlateDecodeFilter

public interface Filter

A single PDF stream filter (the algorithms named by /Filter entries, e.g. FlateDecode). Implementations only need to support decoding; this package is a reader, not a PDF writer/optimizer.

Method Summary

Modifier and Type	Method	Description
byte[]	decode(byte[] encoded, COSDictionary parameters, COSDictionary streamDict)	Decodes encoded using this filter's algorithm.

Method Detail

decode

byte[] decode(byte[] encoded,
              COSDictionary parameters,
              COSDictionary streamDict)
       throws java.io.IOException,
              COSException

Decodes encoded using this filter's algorithm.

Parameters:

encoded - the filtered bytes, as stored in the file

parameters - this filter's DecodeParms dictionary (never null; empty if the stream had none)

streamDict - the owning stream's full dictionary, in case a filter needs sibling entries (unused by the filters implemented here, but kept for extensibility/parity with PDFBox's Filter API)

Throws:

java.io.IOException

COSException