Package com.drew.metadata.iptc

Class IptcReader

java.lang.Object

com.drew.metadata.iptc.IptcReader

All Implemented Interfaces:

JpegSegmentMetadataReader

public class IptcReader
extends java.lang.Object
implements JpegSegmentMetadataReader

Decodes IPTC binary data, populating a Metadata object with tag values in an IptcDirectory.

http://www.iptc.org/std/IIM/4.1/specification/IIMV4.1.pdf

Field Summary

Fields

Modifier and Type	Field	Description
private static byte	IptcMarkerByte

Constructor Summary

Constructors

Constructor	Description
IptcReader()

Method Summary

Modifier and Type	Method	Description
void	extract(SequentialReader reader, Metadata metadata, long length)	Performs the IPTC data extraction, adding found values to the specified instance of Metadata.
void	extract(SequentialReader reader, Metadata metadata, long length, Directory parentDirectory)	Performs the IPTC data extraction, adding found values to the specified instance of Metadata.
java.lang.Iterable<JpegSegmentType>	getSegmentTypes()	Gets the set of JPEG segment types that this reader is interested in.
private void	processTag(SequentialReader reader, Directory directory, int directoryType, int tagType, int tagByteCount)
void	readJpegSegments(java.lang.Iterable<byte[]> segments, Metadata metadata, JpegSegmentType segmentType)	Extracts metadata from all instances of a particular JPEG segment type.

Methods inherited from class java.lang.Object

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

Field Detail

IptcMarkerByte

private static final byte IptcMarkerByte

See Also:

Constant Field Values

Constructor Detail

IptcReader

public IptcReader()

Method Detail

getSegmentTypes

public java.lang.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(java.lang.Iterable<byte[]> segments,
                             Metadata metadata,
                             JpegSegmentType segmentType)

Description copied from interface: JpegSegmentMetadataReader

Extracts metadata from all instances of a particular JPEG segment type.

Specified by:

readJpegSegments in interface JpegSegmentMetadataReader

Parameters:

segments - A sequence of byte arrays from which the metadata should be extracted. These are in the order encountered in the original file.

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

segmentType - The JpegSegmentType being read.

extract

public void extract(SequentialReader reader,
                    Metadata metadata,
                    long length)

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

extract

public void extract(SequentialReader reader,
                    Metadata metadata,
                    long length,
                    Directory parentDirectory)

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

processTag

private void processTag(SequentialReader reader,
                        Directory directory,
                        int directoryType,
                        int tagType,
                        int tagByteCount)
                 throws java.io.IOException

Throws:

java.io.IOException