com.drew.metadata.jpeg
Class JpegDescriptor

java.lang.Object
  com.drew.metadata.TagDescriptor
      com.drew.metadata.jpeg.JpegDescriptor

All Implemented Interfaces:

Serializable

public class JpegDescriptor
extends TagDescriptor

Provides human-readable string versions of the tags stored in a JpegDirectory. Thanks to Darrell Silver (www.darrellsilver.com) for the initial version of this class.

See Also:

Serialized Form

Field Summary

Fields inherited from class com.drew.metadata.TagDescriptor

_directory

Constructor Summary

JpegDescriptor(Directory directory)

Method Summary

String	getComponentDataDescription(int componentNumber)
String	getDataPrecisionDescription()
String	getDescription(int tagType) Returns a descriptive value of the the specified tag for this image.
String	getImageHeightDescription()
String	getImageWidthDescription()

Methods inherited from class java.lang.Object

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

Constructor Detail

JpegDescriptor

public JpegDescriptor(Directory directory)

Method Detail

getDescription

public String getDescription(int tagType)
                      throws MetadataException

Description copied from class: TagDescriptor

Returns a descriptive value of the the specified tag for this image. Where possible, known values will be substituted here in place of the raw tokens actually kept in the Exif segment. If no substitution is available, the value provided by getString(int) will be returned.

This and getString(int) are the only 'get' methods that won't throw an exception.

Specified by:

getDescription in class TagDescriptor

Parameters:

tagType - the tag to find a description for

Returns:

a description of the image's value for the specified tag, or null if the tag hasn't been defined.

Throws:

MetadataException

getImageWidthDescription

public String getImageWidthDescription()

getImageHeightDescription

public String getImageHeightDescription()

getDataPrecisionDescription

public String getDataPrecisionDescription()

getComponentDataDescription

public String getComponentDataDescription(int componentNumber)
                                   throws MetadataException

Throws:

MetadataException