com.drew.metadata.exif
Class ExifDescriptor

java.lang.Object
  com.drew.metadata.TagDescriptor
      com.drew.metadata.exif.ExifDescriptor

All Implemented Interfaces:

Serializable

public class ExifDescriptor
extends TagDescriptor

Provides human-readable string represenations of tag values stored in a ExifDirectory.

See Also:

Serialized Form

Field Summary

private boolean	_allowDecimalRepresentationOfRationals Dictates whether rational values will be represented in decimal format in instances where decimal notation is elegant (such as 1/2 -> 0.5, but not 1/3).
private static DecimalFormat	SimpleDecimalFormatter

Fields inherited from class com.drew.metadata.TagDescriptor

_directory

Constructor Summary

ExifDescriptor(Directory directory)

Method Summary

static String	convertBytesToVersionString(int[] components) Takes a series of 4 bytes from the specified offset, and converts these to a well-known version number, where possible.
String	get35mmFilmEquivFocalLengthDescription()
String	getApertureValueDescription()
String	getBitsPerSampleDescription()
String	getColorSpaceDescription()
String	getComponentConfigurationDescription()
String	getCompressionDescription()
String	getCompressionLevelDescription()
String	getContrastDescription()
String	getCustomRenderedDescription()
String	getDescription(int tagType) Returns a descriptive value of the the specified tag for this image.
String	getDigitalZoomRatioDescription()
String	getExifImageHeightDescription()
String	getExifImageWidthDescription()
String	getExifVersionDescription()
String	getExposureBiasDescription()
String	getExposureModeDescription()
String	getExposureProgramDescription()
String	getExposureTimeDescription()
String	getFileSourceDescription()
String	getFillOrderDescription()
String	getFlashDescription()
String	getFlashPixVersionDescription()
String	getFNumberDescription()
String	getFocalLengthDescription()
String	getFocalPlaneResolutionUnitDescription()
String	getFocalPlaneXResolutionDescription()
String	getFocalPlaneYResolutionDescription()
String	getGainControlDescription()
String	getIsoEquivalentDescription()
String	getMaxApertureValueDescription()
String	getMeteringModeDescription()
String	getNewSubfileTypeDescription()
String	getOrientationDescription()
String	getPhotometricInterpretationDescription()
String	getPlanarConfigurationDescription()
String	getReferenceBlackWhiteDescription()
String	getResolutionDescription()
String	getRowsPerStripDescription()
String	getSamplesPerPixelDescription()
String	getSaturationDescription()
String	getSceneCaptureTypeDescription()
String	getSceneTypeDescription()
String	getSensingMethodDescription()
String	getSharpnessDescription()
String	getShutterSpeedDescription()
String	getStripByteCountsDescription()
String	getSubfileTypeDescription()
String	getSubjectDistanceDescription()
String	getSubjectDistanceRangeDescription()
String	getThresholdingDescription()
String	getThumbnailDescription()
String	getThumbnailImageHeightDescription()
String	getThumbnailImageWidthDescription()
String	getThumbnailLengthDescription()
String	getThumbnailOffsetDescription()
private String	getUnicodeDescription(int tag) The Windows specific tags uses plain Unicode
String	getUserCommentDescription()
String	getWhiteBalanceDescription()
String	getWhiteBalanceModeDescription()
String	getWindowsAuthorDescription()
String	getWindowsCommentDescription()
String	getWindowsKeywordsDescription()
String	getWindowsSubjectDescription()
String	getWindowsTitleDescription()
String	getXResolutionDescription()
String	getYCbCrPositioningDescription()
String	getYCbCrSubsamplingDescription()
String	getYResolutionDescription()

Methods inherited from class java.lang.Object

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

Field Detail

_allowDecimalRepresentationOfRationals

private boolean _allowDecimalRepresentationOfRationals

Dictates whether rational values will be represented in decimal format in instances where decimal notation is elegant (such as 1/2 -> 0.5, but not 1/3).

SimpleDecimalFormatter

private static final DecimalFormat SimpleDecimalFormatter

Constructor Detail

ExifDescriptor

public ExifDescriptor(Directory directory)

Method Detail

getDescription

public String getDescription(int tagType)
                      throws MetadataException

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.

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

getNewSubfileTypeDescription

public String getNewSubfileTypeDescription()
                                    throws MetadataException

Throws:

MetadataException

getSubfileTypeDescription

public String getSubfileTypeDescription()
                                 throws MetadataException

Throws:

MetadataException

getThresholdingDescription

public String getThresholdingDescription()
                                  throws MetadataException

Throws:

MetadataException

getFillOrderDescription

public String getFillOrderDescription()
                               throws MetadataException

Throws:

MetadataException

getSubjectDistanceRangeDescription

public String getSubjectDistanceRangeDescription()
                                          throws MetadataException

Throws:

MetadataException

getSharpnessDescription

public String getSharpnessDescription()
                               throws MetadataException

Throws:

MetadataException

getSaturationDescription

public String getSaturationDescription()
                                throws MetadataException

Throws:

MetadataException

getContrastDescription

public String getContrastDescription()
                              throws MetadataException

Throws:

MetadataException

getGainControlDescription

public String getGainControlDescription()
                                 throws MetadataException

Throws:

MetadataException

getSceneCaptureTypeDescription

public String getSceneCaptureTypeDescription()
                                      throws MetadataException

Throws:

MetadataException

get35mmFilmEquivFocalLengthDescription

public String get35mmFilmEquivFocalLengthDescription()
                                              throws MetadataException

Throws:

MetadataException

getDigitalZoomRatioDescription

public String getDigitalZoomRatioDescription()
                                      throws MetadataException

Throws:

MetadataException

getWhiteBalanceModeDescription

public String getWhiteBalanceModeDescription()
                                      throws MetadataException

Throws:

MetadataException

getExposureModeDescription

public String getExposureModeDescription()
                                  throws MetadataException

Throws:

MetadataException

getCustomRenderedDescription

public String getCustomRenderedDescription()
                                    throws MetadataException

Throws:

MetadataException

getUserCommentDescription

public String getUserCommentDescription()
                                 throws MetadataException

Throws:

MetadataException

getThumbnailDescription

public String getThumbnailDescription()
                               throws MetadataException

Throws:

MetadataException

getIsoEquivalentDescription

public String getIsoEquivalentDescription()
                                   throws MetadataException

Throws:

MetadataException

getReferenceBlackWhiteDescription

public String getReferenceBlackWhiteDescription()
                                         throws MetadataException

Throws:

MetadataException

getExifVersionDescription

public String getExifVersionDescription()
                                 throws MetadataException

Throws:

MetadataException

getFlashPixVersionDescription

public String getFlashPixVersionDescription()
                                     throws MetadataException

Throws:

MetadataException

getSceneTypeDescription

public String getSceneTypeDescription()
                               throws MetadataException

Throws:

MetadataException

getFileSourceDescription

public String getFileSourceDescription()
                                throws MetadataException

Throws:

MetadataException

getExposureBiasDescription

public String getExposureBiasDescription()
                                  throws MetadataException

Throws:

MetadataException

getMaxApertureValueDescription

public String getMaxApertureValueDescription()
                                      throws MetadataException

Throws:

MetadataException

getApertureValueDescription

public String getApertureValueDescription()
                                   throws MetadataException

Throws:

MetadataException

getExposureProgramDescription

public String getExposureProgramDescription()
                                     throws MetadataException

Throws:

MetadataException

getYCbCrSubsamplingDescription

public String getYCbCrSubsamplingDescription()
                                      throws MetadataException

Throws:

MetadataException

getPlanarConfigurationDescription

public String getPlanarConfigurationDescription()
                                         throws MetadataException

Throws:

MetadataException

getSamplesPerPixelDescription

public String getSamplesPerPixelDescription()

getRowsPerStripDescription

public String getRowsPerStripDescription()

getStripByteCountsDescription

public String getStripByteCountsDescription()

getPhotometricInterpretationDescription

public String getPhotometricInterpretationDescription()
                                               throws MetadataException

Throws:

MetadataException

getCompressionDescription

public String getCompressionDescription()
                                 throws MetadataException

Throws:

MetadataException

getBitsPerSampleDescription

public String getBitsPerSampleDescription()

getThumbnailImageWidthDescription

public String getThumbnailImageWidthDescription()

getThumbnailImageHeightDescription

public String getThumbnailImageHeightDescription()

getFocalPlaneXResolutionDescription

public String getFocalPlaneXResolutionDescription()
                                           throws MetadataException

Throws:

MetadataException

getFocalPlaneYResolutionDescription

public String getFocalPlaneYResolutionDescription()
                                           throws MetadataException

Throws:

MetadataException

getFocalPlaneResolutionUnitDescription

public String getFocalPlaneResolutionUnitDescription()
                                              throws MetadataException

Throws:

MetadataException

getExifImageWidthDescription

public String getExifImageWidthDescription()
                                    throws MetadataException

Throws:

MetadataException

getExifImageHeightDescription

public String getExifImageHeightDescription()
                                     throws MetadataException

Throws:

MetadataException

getColorSpaceDescription

public String getColorSpaceDescription()
                                throws MetadataException

Throws:

MetadataException

getFocalLengthDescription

public String getFocalLengthDescription()
                                 throws MetadataException

Throws:

MetadataException

getFlashDescription

public String getFlashDescription()
                           throws MetadataException

Throws:

MetadataException

getWhiteBalanceDescription

public String getWhiteBalanceDescription()
                                  throws MetadataException

Throws:

MetadataException

getMeteringModeDescription

public String getMeteringModeDescription()
                                  throws MetadataException

Throws:

MetadataException

getSubjectDistanceDescription

public String getSubjectDistanceDescription()
                                     throws MetadataException

Throws:

MetadataException

getCompressionLevelDescription

public String getCompressionLevelDescription()
                                      throws MetadataException

Throws:

MetadataException

getThumbnailLengthDescription

public String getThumbnailLengthDescription()

getThumbnailOffsetDescription

public String getThumbnailOffsetDescription()

getYResolutionDescription

public String getYResolutionDescription()
                                 throws MetadataException

Throws:

MetadataException

getXResolutionDescription

public String getXResolutionDescription()
                                 throws MetadataException

Throws:

MetadataException

getExposureTimeDescription

public String getExposureTimeDescription()

getShutterSpeedDescription

public String getShutterSpeedDescription()
                                  throws MetadataException

Throws:

MetadataException

getFNumberDescription

public String getFNumberDescription()
                             throws MetadataException

Throws:

MetadataException

getYCbCrPositioningDescription

public String getYCbCrPositioningDescription()
                                      throws MetadataException

Throws:

MetadataException

getOrientationDescription

public String getOrientationDescription()
                                 throws MetadataException

Throws:

MetadataException

getResolutionDescription

public String getResolutionDescription()
                                throws MetadataException

Throws:

MetadataException

getSensingMethodDescription

public String getSensingMethodDescription()
                                   throws MetadataException

Throws:

MetadataException

getComponentConfigurationDescription

public String getComponentConfigurationDescription()
                                            throws MetadataException

Throws:

MetadataException

convertBytesToVersionString

public static String convertBytesToVersionString(int[] components)

Takes a series of 4 bytes from the specified offset, and converts these to a well-known version number, where possible. For example, (hex) 30 32 31 30 == 2.10).

Parameters:

components - the four version values

Returns:

the version as a string of form 2.10

getUnicodeDescription

private String getUnicodeDescription(int tag)
                              throws MetadataException

The Windows specific tags uses plain Unicode

Throws:

MetadataException

getWindowsAuthorDescription

public String getWindowsAuthorDescription()
                                   throws MetadataException

Throws:

MetadataException

getWindowsCommentDescription

public String getWindowsCommentDescription()
                                    throws MetadataException

Throws:

MetadataException

getWindowsKeywordsDescription

public String getWindowsKeywordsDescription()
                                     throws MetadataException

Throws:

MetadataException

getWindowsTitleDescription

public String getWindowsTitleDescription()
                                  throws MetadataException

Throws:

MetadataException

getWindowsSubjectDescription

public String getWindowsSubjectDescription()
                                    throws MetadataException

Throws:

MetadataException