Package com.drew.metadata.adobe

Class AdobeJpegDirectory

java.lang.Object

com.drew.metadata.Directory

com.drew.metadata.adobe.AdobeJpegDirectory

public class AdobeJpegDirectory
extends Directory

Contains image encoding information for DCT filters, as stored by Adobe.

Field Summary

Fields

Modifier and Type	Field	Description
private static final HashMap<Integer,String>	_tagNameMap
static final int	TAG_APP14_FLAGS0	The convention for TAG_APP14_FLAGS0 and TAG_APP14_FLAGS1 is that 0 bits are benign.
static final int	TAG_APP14_FLAGS1	The convention for TAG_APP14_FLAGS0 and TAG_APP14_FLAGS1 is that 0 bits are benign.
static final int	TAG_COLOR_TRANSFORM
static final int	TAG_DCT_ENCODE_VERSION

Fields inherited from class com.drew.metadata.Directory

_definedTagList, _descriptor, _tagMap

Constructor Summary

Constructors

Constructor	Description
AdobeJpegDirectory()

Method Summary

Modifier and Type	Method	Description
String	getName()	Provides the name of the directory, for display purposes.
protected HashMap<Integer,String>	getTagNameMap()	Provides the map of tag names, hashed by tag type identifier.

Methods inherited from class com.drew.metadata.Directory

addError, containsTag, getBoolean, getBooleanObject, getByteArray, getDate, getDate, getDate, getDescription, getDouble, getDoubleObject, getErrorCount, getErrors, getFloat, getFloatObject, getInt, getIntArray, getInteger, getLong, getLongObject, getObject, getParent, getRational, getRationalArray, getString, getString, getStringArray, getStringValue, getStringValueArray, getTagCount, getTagName, getTags, hasErrors, hasTagName, isEmpty, setBoolean, setByteArray, setDate, setDescriptor, setDouble, setDoubleArray, setFloat, setFloatArray, setInt, setIntArray, setLong, setObject, setObjectArray, setParent, setRational, setRationalArray, setString, setStringArray, setStringValue, setStringValueArray, toString

Methods inherited from class java.lang.Object

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

Field Details

TAG_DCT_ENCODE_VERSION

public static final int TAG_DCT_ENCODE_VERSION

See Also:

• Constant Field Values

TAG_APP14_FLAGS0

public static final int TAG_APP14_FLAGS0

The convention for TAG_APP14_FLAGS0 and TAG_APP14_FLAGS1 is that 0 bits are benign. 1 bits in TAG_APP14_FLAGS0 pass information that is possibly useful but not essential for decoding.

0x8000 bit: Encoder used Blend=1 downsampling

See Also:

• Constant Field Values

TAG_APP14_FLAGS1

public static final int TAG_APP14_FLAGS1

The convention for TAG_APP14_FLAGS0 and TAG_APP14_FLAGS1 is that 0 bits are benign. 1 bits in TAG_APP14_FLAGS1 pass information essential for decoding. DCTDecode could reject a compressed image, if there are 1 bits in TAG_APP14_FLAGS1 or color transform codes that it cannot interpret.

See Also:

• Constant Field Values

TAG_COLOR_TRANSFORM

public static final int TAG_COLOR_TRANSFORM

See Also:

• Constant Field Values

_tagNameMap

private static final HashMap<Integer,String> _tagNameMap

Constructor Details

AdobeJpegDirectory

public AdobeJpegDirectory()

Method Details

getName

public String getName()

Description copied from class: Directory

Provides the name of the directory, for display purposes. E.g. Exif

Specified by:

getName in class Directory

Returns:

the name of the directory

getTagNameMap

protected HashMap<Integer,String> getTagNameMap()

Description copied from class: Directory

Provides the map of tag names, hashed by tag type identifier.

Specified by:

getTagNameMap in class Directory

Returns:

the map of tag names