PdfStreamCompressionConverter Class

In This Topic

The processing command that allows to change the compression of PDF stream.

Object Model

Syntax

Visual Basic
C#
Managed Extensions for C++
C++/CLI

'Declaration

Public Class PdfStreamCompressionConverter
   Inherits Vintasoft.Imaging.Processing.ProcessingCommand(Of TTarget)

public class PdfStreamCompressionConverter : Vintasoft.Imaging.Processing.ProcessingCommand<TTarget>

public __gc class PdfStreamCompressionConverter : public Vintasoft.Imaging.Processing.ProcessingCommand<TTarget*>*

public ref class PdfStreamCompressionConverter : public Vintasoft.Imaging.Processing.ProcessingCommand<TTarget^>^

Example

Here is an example that shows how to compress all data streams of document with Flate (ZIP) comporession:

VB.NET


Public Shared Sub CompressDataStreams(inFilename As String, outFilename As String)
    ' create stream compression converter
    Dim converter As New Vintasoft.Imaging.Pdf.Processing.BasicTypes.PdfStreamCompressionConverter(Vintasoft.Imaging.Pdf.PdfCompression.Zip)
    converter.CompressionSettings.ZipCompressionLevel = 9
    converter.ProcessImageStreams = False
    converter.ProcessDataStreams = True

    ' create compressor
    Dim compressor As New Vintasoft.Imaging.Pdf.Processing.PdfDocumentConverter("Data resources compressor", New Vintasoft.Imaging.Pdf.Processing.PdfDocumentProcessingTree(converter))

    ' execute compression
    compressor.Convert(inFilename, outFilename)
End Sub


public static void CompressDataStreams(string inFilename, string outFilename)
{
    // create stream compression converter
    Vintasoft.Imaging.Pdf.Processing.BasicTypes.PdfStreamCompressionConverter converter = 
        new Vintasoft.Imaging.Pdf.Processing.BasicTypes.PdfStreamCompressionConverter(Vintasoft.Imaging.Pdf.PdfCompression.Zip);
    converter.CompressionSettings.ZipCompressionLevel = 9;
    converter.ProcessImageStreams = false;
    converter.ProcessDataStreams = true;

    // create compressor
    Vintasoft.Imaging.Pdf.Processing.PdfDocumentConverter compressor =
        new Vintasoft.Imaging.Pdf.Processing.PdfDocumentConverter("Data resources compressor",
            new Vintasoft.Imaging.Pdf.Processing.PdfDocumentProcessingTree(converter));

    // execute compression
    compressor.Convert(inFilename, outFilename);
}

Inheritance Hierarchy

System.Object
Vintasoft.Imaging.Processing.ProcessingCommand<Vintasoft.Imaging.Pdf.BasicTypes.PdfStream>
Vintasoft.Imaging.Pdf.Processing.BasicTypes.PdfStreamCompressionConverter

Requirements

Target Platforms: .NET 8; .NET 7; .NET 6; .NET Framework 4.8, 4.7, 4.6, 4.5, 4.0, 3.5

Reference

PdfStreamCompressionConverter Members
Vintasoft.Imaging.Pdf.Processing.BasicTypes Namespace

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