Package com.drew.metadata.xmp

Class XmpReader

java.lang.Object

com.drew.metadata.xmp.XmpReader

All Implemented Interfaces:

JpegSegmentMetadataReader

public class XmpReader
extends Object
implements JpegSegmentMetadataReader

Extracts XMP data from JPEG APP1 segments.

Note that XMP uses a namespace and path format for identifying values, which does not map to metadata-extractor's integer based tag identifiers. Therefore, XMP data is extracted and exposed via XmpDirectory.getXMPMeta() which returns an instance of Adobe's XMPMeta which exposes the full XMP data set.

The extraction is done with Adobe's XmpCore-Library (XMP-Toolkit) Copyright (c) 1999 - 2007, Adobe Systems Incorporated All rights reserved.

Author:

Torsten Skadell, Drew Noakes https://drewnoakes.com, https://github.com/bezineb5

Constructor Summary

Constructors

Constructor	Description
XmpReader()

Method Summary

Modifier and Type	Method	Description
void	extract(byte[] xmpBytes, int offset, int length, Metadata metadata, Directory parentDirectory)	Performs the XMP data extraction, adding found values to the specified instance of Metadata.
void	extract(byte[] xmpBytes, Metadata metadata)	Performs the XMP data extraction, adding found values to the specified instance of Metadata.
void	extract(byte[] xmpBytes, Metadata metadata, Directory parentDirectory)	Performs the XMP data extraction, adding found values to the specified instance of Metadata.
void	extract(StringValue xmpString, Metadata metadata)	Performs the XMP data extraction, adding found values to the specified instance of Metadata.
void	extract(String xmpString, Metadata metadata)	Performs the XMP data extraction, adding found values to the specified instance of Metadata.
void	extract(String xmpString, Metadata metadata, Directory parentDirectory)	Performs the XMP data extraction, adding found values to the specified instance of Metadata.
Iterable<JpegSegmentType>	getSegmentTypes()	Gets the set of JPEG segment types that this reader is interested in.
void	readJpegSegments(Iterable<byte[]> segments, Metadata metadata, JpegSegmentType segmentType)	Version specifically for dealing with XMP found in JPEG segments.

Methods inherited from class java.lang.Object

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

Constructor Details

XmpReader

public XmpReader()

Method Details

getSegmentTypes

public Iterable<JpegSegmentType> getSegmentTypes()

Description copied from interface: JpegSegmentMetadataReader

Gets the set of JPEG segment types that this reader is interested in.

Specified by:

getSegmentTypes in interface JpegSegmentMetadataReader

readJpegSegments

public void readJpegSegments(Iterable<byte[]> segments,
 Metadata metadata,
 JpegSegmentType segmentType)

Version specifically for dealing with XMP found in JPEG segments. This form of XMP has a peculiar preamble, which must be removed before parsing the XML.

Specified by:

readJpegSegments in interface JpegSegmentMetadataReader

Parameters:

segments - The byte array from which the metadata should be extracted.

metadata - The Metadata object into which extracted values should be merged.

segmentType - The JpegSegmentType being read.

extract

public void extract(byte[] xmpBytes,
 Metadata metadata)

Performs the XMP data extraction, adding found values to the specified instance of Metadata.

The extraction is done with Adobe's XMPCore library.

extract

public void extract(byte[] xmpBytes,
 Metadata metadata,
 Directory parentDirectory)

Performs the XMP data extraction, adding found values to the specified instance of Metadata.

The extraction is done with Adobe's XMPCore library.

extract

public void extract(byte[] xmpBytes,
 int offset,
 int length,
 Metadata metadata,
 Directory parentDirectory)

Performs the XMP data extraction, adding found values to the specified instance of Metadata.

The extraction is done with Adobe's XMPCore library.

extract

public void extract(String xmpString,
 Metadata metadata)

Performs the XMP data extraction, adding found values to the specified instance of Metadata.

The extraction is done with Adobe's XMPCore library.

extract

public void extract(StringValue xmpString,
 Metadata metadata)

Performs the XMP data extraction, adding found values to the specified instance of Metadata.

The extraction is done with Adobe's XMPCore library.

extract

public void extract(String xmpString,
 Metadata metadata,
 Directory parentDirectory)

Performs the XMP data extraction, adding found values to the specified instance of Metadata.

The extraction is done with Adobe's XMPCore library.