com.drew.metadata.jpeg
Class JpegDescriptor

java.lang.Object
  extended by com.drew.metadata.TagDescriptor
      extended by com.drew.metadata.jpeg.JpegDescriptor
All Implemented Interfaces:
java.io.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
 java.lang.String getComponentDataDescription(int componentNumber)
           
 java.lang.String getDataPrecisionDescription()
           
 java.lang.String getDescription(int tagType)
          Returns a descriptive value of the the specified tag for this image.
 java.lang.String getImageHeightDescription()
           
 java.lang.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 java.lang.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 java.lang.String getImageWidthDescription()

getImageHeightDescription

public java.lang.String getImageHeightDescription()

getDataPrecisionDescription

public java.lang.String getDataPrecisionDescription()

getComponentDataDescription

public java.lang.String getComponentDataDescription(int componentNumber)
                                             throws MetadataException
Throws:
MetadataException


Copyright © 2006 Drew Noakes. All Rights Reserved.