Package com.drew.metadata.jpeg

Class JpegDnlReader

java.lang.Object

com.drew.metadata.jpeg.JpegDnlReader

All Implemented Interfaces:

JpegSegmentMetadataReader

public class JpegDnlReader
extends java.lang.Object
implements JpegSegmentMetadataReader

Decodes JPEG DNL data, adjusting the image height with information missing from the JPEG SOFx segment.

Constructor Summary

Constructors

Constructor	Description
JpegDnlReader()

Method Summary

Modifier and Type	Method	Description
void	extract(byte[] segmentBytes, Metadata metadata, JpegSegmentType segmentType)
java.lang.Iterable<JpegSegmentType>	getSegmentTypes()	Gets the set of JPEG segment types that this reader is interested in.
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

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

Constructor Detail

JpegDnlReader

public JpegDnlReader()

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(byte[] segmentBytes,
                    Metadata metadata,
                    JpegSegmentType segmentType)