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Acrobat SDK Export with CCITT

Forum|Forum|8 years ago
August 4, 2017
2 replies
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I have created an Acrobat Plugin using Visual Studio 2013 and C++.

In that plugin, I am doing the following:

Create a new PDF document
Use AVConversionConvertToPDF and PDEElementCopy to create a PDEImage ( I repeat for 2 images: a 1-bit monochrome TIF and an 8-bit grayscale TIF)
Use PDEContentAddElem to add the images to a new document.
Save document

The saved document has the 2 images with the proper values (bit depth, dimensions), except for 'Filters'. The 1-bit monochrome image shows JBIG2 as a filter, but I want to use CCITT.

Can I change the compression for a PDEImage element before I save the PDF file?

Note: I am not using PDEImageCreate because AVConversionConvertToPDF handles all types of image formats already. The resulting PDF file is fine, except for the image's compression.

Acrobat SDK and JavaScript

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Adobe Employee

You can change the settings in the AVConversionConvertToPDF API call to specify which compression algorithm to use

mariog69599891Author

Known Participant

Thanks for the reply.

I looked at the function closer, and see no settings options like compression algorithms. The AVConversionConvertToPDF method has 5 parameters:

flags, for thing like asynchronous operation or display or not display dialogs.

inPath, for the input filename

inFileSys, for the input file system (looks promising but I see nothing regards to compression)

outPDDoc, for the output PDDoc

statusMonitor, for a status monitor.

Where would I change the compression specification?

Adobe Employee

In the ASCab of settings.

mariog69599891Author

Known Participant

Update: I just found out that the use of JBIG2 compression was based on the Preferences / Convert to PDF / TIF settings.

I can change it there to CCITT and get what I want.

Now, how can I change that value programmatically?

Or my original question still stands: How can I convert the PDEImage to be CCITT encoded?