public override byte[] Decode(Bytes.Buffer data, PdfDirectObject parameters, IDictionary <PdfName, PdfDirectObject> header) { // get decode parameters PdfDictionary decodeParms = parameters as PdfDictionary; var ccittFaxParams = new CCITTFaxParams( K: decodeParms.GetInt(PdfName.K), endOfLine: decodeParms.GetBool(PdfName.EndOfLine), encodedByteAlign: decodeParms.GetBool(PdfName.EncodedByteAlign), columns: decodeParms.GetInt(PdfName.Columns), rows: decodeParms.GetInt(PdfName.Rows), endOfBlock: decodeParms.GetBool(PdfName.EndOfBlock), blackIs1: decodeParms.GetBool(PdfName.BlackIs1) ); var decoder = new CCITTFaxDecoder(data, ccittFaxParams); using (var output = new Bytes.Buffer()) { var currentByte = 0; while ((currentByte = decoder.ReadNextChar()) > -1) { output.Append(FiltersExtension.ToByte(currentByte)); } return(output.GetBuffer()); } }