Package org.dspace.app.mediafilter

Class MediaFilter

java.lang.Object

org.dspace.app.mediafilter.MediaFilter

All Implemented Interfaces:

FormatFilter

Direct Known Subclasses:

BrandedPreviewJPEGFilter, ImageMagickThumbnailFilter, JPEGFilter, PDFBoxThumbnail, TikaTextExtractionFilter

public abstract class MediaFilter
extends Object
implements FormatFilter

Abstract class which defines the default settings for a *simple* Media or Format Filter. This class may be extended by any class which wishes to define a simple filter to be run by the MediaFilterManager. More complex filters should likely implement the FormatFilter interface directly, so that they can define their own pre/postProcessing methods.

Constructor Summary

Constructors

Constructor	Description
MediaFilter()

Method Summary

Modifier and Type	Method	Description
void	postProcessBitstream(Context c, Item item, Bitstream generatedBitstream)	Perform any post-processing of the generated bitstream *after* this filter has already been run.
boolean	preProcessBitstream(Context c, Item item, Bitstream source, boolean verbose)	Perform any pre-processing of the source bitstream *before* the actual filtering takes place in MediaFilterManager.processBitstream().

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.dspace.app.mediafilter.FormatFilter

getBundleName, getDescription, getDestinationStream, getFilteredName, getFormatString

Constructor Details

MediaFilter

public MediaFilter()

Method Details

preProcessBitstream

public boolean preProcessBitstream(Context c,
 Item item,
 Bitstream source,
 boolean verbose)
                            throws Exception

Perform any pre-processing of the source bitstream *before* the actual filtering takes place in MediaFilterManager.processBitstream().

Return true if pre-processing is successful (or no pre-processing is necessary). Return false if bitstream should be skipped for any reason.

Specified by:

preProcessBitstream in interface FormatFilter

Parameters:

c - context

item - item containing bitstream to process

source - source bitstream to be processed

verbose - verbose mode

Returns:

true if bitstream processing should continue, false if this bitstream should be skipped

Throws:

Exception - if error

postProcessBitstream

public void postProcessBitstream(Context c,
 Item item,
 Bitstream generatedBitstream)
                          throws Exception

Perform any post-processing of the generated bitstream *after* this filter has already been run.

Return true if pre-processing is successful (or no pre-processing is necessary). Return false if bitstream should be skipped for some reason.

Specified by:

postProcessBitstream in interface FormatFilter

Parameters:

c - context

item - item containing bitstream to process

generatedBitstream - the bitstream which was generated by this filter.

Throws:

Exception - if error