SUNScholar/Media Filters/4.X

From Libopedia
Revision as of 22:37, 21 December 2014 by Hgibson (talk | contribs)
Jump to navigation Jump to search 
Back to Media Filters

Please note: This is an untested procedure. It is a work in progress.

Step 1 - Login to the server

http://wiki.lib.sun.ac.za/index.php/SUNScholar/Prepare_Ubuntu/S01

Step 2 - Install the Ubuntu software packages

Type the following: 

sudo apt-get install xpdf poppler-utils libjai-core-java libjai-imageio-core-java

Step 3 - Configuration

Step 3A

First, be sure there is a value for thumbnail.maxwidth and that it corresponds to the size you want for preview images for the UI.

Edit the "dspace.cfg" file. 

nano /home/dspace/source/config/dspace.cfg

Search for the following and modify. 

# maximum width and height of generated thumbnails
thumbnail.maxwidth  = 80
thumbnail.maxheight = 80

Step 3B

Now, add the absolute paths to the XPDF tools you installed.

See example below. 

xpdf.path.pdftotext = /usr/bin/pdftotext
xpdf.path.pdftoppm  = /usr/bin/pdftoppm
xpdf.path.pdfinfo   = /usr/bin/pdfinfo

Step 3C

Add the filter plugins. 

filter.plugins = \
        PDF Text Extractor, \
        PDF Thumbnail, \
        HTML Text Extractor, \
        Word Text Extractor, \
        JPEG Thumbnail, \
        Branded Preview JPEG

Step 3D

Change the MediaFilter plugin configuration to remove the old "org.dspace.app.mediafilter.PDFFilter" and add the new filters "org.dspace.app.mediafilter.XPDF2Text = PDF Text Extractor" and "org.dspace.app.mediafilter.XPDF2Thumbnail = PDF Thumbnail". 

plugin.named.org.dspace.app.mediafilter.FormatFilter = \
  org.dspace.app.mediafilter.XPDF2Text = PDF Text Extractor, \
  org.dspace.app.mediafilter.XPDF2Thumbnail = PDF Thumbnail, \
  org.dspace.app.mediafilter.HTMLFilter = HTML Text Extractor, \
  org.dspace.app.mediafilter.WordFilter = Word Text Extractor, \
  org.dspace.app.mediafilter.JPEGFilter = JPEG Thumbnail, \
  org.dspace.app.mediafilter.BrandedPreviewJPEGFilter = Branded Preview JPEG

Step 3E

Then replace "filter.org.dspace.app.mediafilter.PDFFilter.inputFormats = Adobe PDF" with the following: 

filter.org.dspace.app.mediafilter.XPDF2Thumbnail.inputFormats = Adobe PDF
filter.org.dspace.app.mediafilter.XPDF2Text.inputFormats = Adobe PDF

Step 4 - Build and Install

Perform the following as the "dspace" user.

To build, type the following: 

cd /home/dspace/source

mvn -Pxpdf-mediafilter-support package

To install, type the following: (Replace XXX with your DSpace version number) 

cd /home/dspace/source/dspace/target/dspace-XXX-build

ant update

ant clean_backups

References

Retrieved from "http://wiki.lib.sun.ac.za/index.php?title=SUNScholar/Media_Filters/4.X&oldid=32384"