TIFF: How to split TIFF file?

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TIFF file can be split to two TIFF files:

without recompression - image data is copied between TIFF files, this is very fast way
with recompression - image is loaded from source TIFF and saved to destination TIFF file

Here is C#/VB.NET code that shows how to split TIFF file to two TIFF files without recompression:

public void SplitTiffFilesWithoutRecompression(
    System.IO.Stream sourceStream, System.IO.Stream oddStream, System.IO.Stream evenStream)
{
    // open TIFF files
    Vintasoft.Imaging.Codecs.ImageFiles.Tiff.TiffFile sourceTiff = 
        new Vintasoft.Imaging.Codecs.ImageFiles.Tiff.TiffFile(sourceStream);
    Vintasoft.Imaging.Codecs.ImageFiles.Tiff.TiffFile oddTiff = 
        new Vintasoft.Imaging.Codecs.ImageFiles.Tiff.TiffFile(oddStream);
    Vintasoft.Imaging.Codecs.ImageFiles.Tiff.TiffFile evenTiff = 
        new Vintasoft.Imaging.Codecs.ImageFiles.Tiff.TiffFile(evenStream);

    // for each page of the source TIFF file
    Vintasoft.Imaging.Codecs.ImageFiles.Tiff.TiffFile tiff;
    for (int i = 0; i < sourceTiff.Pages.Count; i++)
    {
        // select necessary TIFF file
        if ((i % 2) == 0)
            tiff = evenTiff;
        else
            tiff = oddTiff;

        // add page to TIFF file
        tiff.Pages.Add(sourceTiff.Pages[i]);

        // save changes to TIFF file
        tiff.SaveChanges();
    }

    // release resources used by TIFF files
    evenTiff.Dispose();
    oddTiff.Dispose();
    sourceTiff.Dispose();
}

VB.NET

Public Sub SplitTiffFilesWithoutRecompression(sourceStream As System.IO.Stream, oddStream As System.IO.Stream, evenStream As System.IO.Stream)
    ' open TIFF files
    Dim sourceTiff As New Vintasoft.Imaging.Codecs.ImageFiles.Tiff.TiffFile(sourceStream)
    Dim oddTiff As New Vintasoft.Imaging.Codecs.ImageFiles.Tiff.TiffFile(oddStream)
    Dim evenTiff As New Vintasoft.Imaging.Codecs.ImageFiles.Tiff.TiffFile(evenStream)

    ' for each page of the source TIFF file
    Dim tiff As Vintasoft.Imaging.Codecs.ImageFiles.Tiff.TiffFile
    For i As Integer = 0 To sourceTiff.Pages.Count - 1
        ' select necessary TIFF file
        If (i Mod 2) = 0 Then
            tiff = evenTiff
        Else
            tiff = oddTiff
        End If

        ' add page to TIFF file
        tiff.Pages.Add(sourceTiff.Pages(i))

        ' save changes to TIFF file
        tiff.SaveChanges()
    Next

    ' release resources used by TIFF files
    evenTiff.Dispose()
    oddTiff.Dispose()
    sourceTiff.Dispose()
End Sub

Here is C#/VB.NET code that shows how to split TIFF file to two TIFF files with recompression:

public void SplitTiffFilesWithRecompression(System.IO.Stream sourceStream, System.IO.Stream oddStream, System.IO.Stream evenStream)
{
    // open TIFF files
    Vintasoft.Imaging.ImageCollection sourceImages = new Vintasoft.Imaging.ImageCollection();
    sourceImages.Add(sourceStream);
    Vintasoft.Imaging.Codecs.Encoders.TiffEncoder oddTiffEncoder = 
        new Vintasoft.Imaging.Codecs.Encoders.TiffEncoder(true);
    Vintasoft.Imaging.Codecs.Encoders.TiffEncoder evenTiffEncoder = 
        new Vintasoft.Imaging.Codecs.Encoders.TiffEncoder(true);

    // for each page of the source TIFF file
    for (int i = 0; i < sourceImages.Count; i++)
    {
        // save image in necessary TIFF file
        if ((i % 2) == 0)
            evenTiffEncoder.SaveImage(sourceImages[i], evenStream);
        else
            oddTiffEncoder.SaveImage(sourceImages[i], oddStream);
    }

    // release resources used by TIFF files
    evenTiffEncoder.Dispose();
    oddTiffEncoder.Dispose();
    sourceImages.Dispose();
}

VB.NET

Public Sub SplitTiffFilesWithRecompression(sourceStream As System.IO.Stream, oddStream As System.IO.Stream, evenStream As System.IO.Stream)
    ' open TIFF files
    Dim sourceImages As New Vintasoft.Imaging.ImageCollection()
    sourceImages.Add(sourceStream)
    Dim oddTiffEncoder As New Vintasoft.Imaging.Codecs.Encoders.TiffEncoder(True)
    Dim evenTiffEncoder As New Vintasoft.Imaging.Codecs.Encoders.TiffEncoder(True)

    ' for each page of the source TIFF file
    For i As Integer = 0 To sourceImages.Count - 1
        ' save image in necessary TIFF file
        If (i Mod 2) = 0 Then
            evenTiffEncoder.SaveImage(sourceImages(i), evenStream)
        Else
            oddTiffEncoder.SaveImage(sourceImages(i), oddStream)
        End If
    Next

    ' release resources used by TIFF files
    evenTiffEncoder.Dispose()
    oddTiffEncoder.Dispose()
    sourceImages.Dispose()
End Sub

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