Package org.apache.commons.imaging.formats.jpeg

Class JpegImageParser

java.lang.Object

org.apache.commons.imaging.common.BinaryFileParser

org.apache.commons.imaging.ImageParser

org.apache.commons.imaging.formats.jpeg.JpegImageParser

All Implemented Interfaces:

XmpEmbeddable

public class JpegImageParser
extends ImageParser
implements XmpEmbeddable

Field Summary

Fields

Modifier and Type	Field	Description
private static final String[]	ACCEPTED_EXTENSIONS
private static final String	DEFAULT_EXTENSION
private static final Logger	LOGGER

Constructor Summary

Constructors

Constructor	Description
JpegImageParser()

Method Summary

Modifier and Type	Method	Description
private byte[]	assembleSegments(List<App2Segment> segments)
private byte[]	assembleSegments(List<App2Segment> segments, boolean startWithZero)
boolean	dumpImageFile(PrintWriter pw, ByteSource byteSource)	Write the ImageInfo and format-specific information for the image content of the specified byte source to a PrintWriter
private void	dumpSegments(List<? extends Segment> v)
private List<Segment>	filterAPP1Segments(List<Segment> segments)
protected String[]	getAcceptedExtensions()	Get an array of all accepted extensions
protected ImageFormat[]	getAcceptedTypes()	Get an array of ImageFormat objects describing all accepted types
final BufferedImage	getBufferedImage(ByteSource byteSource, Map<String,Object> params)	Gets a buffered image specified by the byte source (for sources that specify multiple images, choice of which image is returned is implementation dependent).
String	getDefaultExtension()	Get the default extension for the format specified by an implementation of ImageParser.
TiffImageMetadata	getExifMetadata(ByteSource byteSource, Map<String,Object> params)
byte[]	getExifRawData(ByteSource byteSource)
byte[]	getICCProfileBytes(ByteSource byteSource, Map<String,Object> params)	Get an array of bytes describing the International Color Consortium (ICC) specification for the color space of the image contained in the input byteSource.
ImageInfo	getImageInfo(ByteSource byteSource, Map<String,Object> params)	Get image information from the specified ByteSource.
Dimension	getImageSize(ByteSource byteSource, Map<String,Object> params)	Get the size of the image described by the specified ByteSource.
ImageMetadata	getMetadata(ByteSource byteSource, Map<String,Object> params)	Get image metadata from the specified byte source.
String	getName()	Get a descriptive name for the implementation of an ImageParser.
JpegPhotoshopMetadata	getPhotoshopMetadata(ByteSource byteSource, Map<String,Object> params)
String	getXmpXml(ByteSource byteSource, Map<String,Object> params)	Extracts embedded XML metadata as XML string.
boolean	hasExifSegment(ByteSource byteSource)
boolean	hasIptcSegment(ByteSource byteSource)
boolean	hasXmpSegment(ByteSource byteSource)
static boolean	isExifAPP1Segment(GenericSegment segment)
private boolean	keepMarker(int marker, int[] markers)
List<Segment>	readSegments(ByteSource byteSource, int[] markers, boolean returnAfterFirst)
List<Segment>	readSegments(ByteSource byteSource, int[] markers, boolean returnAfterFirst, boolean readEverything)

Methods inherited from class org.apache.commons.imaging.ImageParser

canAcceptExtension, canAcceptExtension, canAcceptType, dumpImageFile, dumpImageFile, dumpImageFile, getAllBufferedImages, getAllBufferedImages, getAllBufferedImages, getAllImageParsers, getBufferedImage, getBufferedImage, getBufferedImageFactory, getFormatCompliance, getFormatCompliance, getFormatCompliance, getICCProfileBytes, getICCProfileBytes, getICCProfileBytes, getICCProfileBytes, getImageInfo, getImageInfo, getImageInfo, getImageSize, getImageSize, getImageSize, getImageSize, getMetadata, getMetadata, getMetadata, getMetadata, getMetadata, isStrict, writeImage

Methods inherited from class org.apache.commons.imaging.common.BinaryFileParser

debugNumber, debugNumber, getByteOrder, setByteOrder

Methods inherited from class java.lang.Object

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

Field Details

LOGGER

private static final Logger LOGGER

DEFAULT_EXTENSION

private static final String DEFAULT_EXTENSION

See Also:

• Constant Field Values

ACCEPTED_EXTENSIONS

private static final String[] ACCEPTED_EXTENSIONS

Constructor Details

JpegImageParser

public JpegImageParser()

Method Details

getAcceptedTypes

protected ImageFormat[] getAcceptedTypes()

Description copied from class: ImageParser

Get an array of ImageFormat objects describing all accepted types

Specified by:

getAcceptedTypes in class ImageParser

Returns:

A valid array of one or more elements.

getName

public String getName()

Description copied from class: ImageParser

Get a descriptive name for the implementation of an ImageParser.

Specified by:

getName in class ImageParser

Returns:

a valid, subject-matter-specific string.

getDefaultExtension

public String getDefaultExtension()

Description copied from class: ImageParser

Get the default extension for the format specified by an implementation of ImageParser. Some parsers can support more than one extension (i.e. .JPEG, .JPG; .TIF, .TIFF, etc.).

Specified by:

getDefaultExtension in class ImageParser

Returns:

A valid string.

getAcceptedExtensions

protected String[] getAcceptedExtensions()

Description copied from class: ImageParser

Get an array of all accepted extensions

Specified by:

getAcceptedExtensions in class ImageParser

Returns:

A valid array of one or more elements.

getBufferedImage

public final BufferedImage getBufferedImage(ByteSource byteSource,
 Map<String,Object> params)
                                     throws ImageReadException,
IOException

Description copied from class: ImageParser

Gets a buffered image specified by the byte source (for sources that specify multiple images, choice of which image is returned is implementation dependent).

Specified by:

getBufferedImage in class ImageParser

Parameters:

byteSource - A valid instance of ByteSource

params - Optional instructions for special-handling or interpretation of the input data (null objects are permitted and must be supported by implementations).

Returns:

A valid instance of BufferedImage.

Throws:

ImageReadException - In the event that the specified content does not conform to the format of the specific parser implementation.

IOException - In the event of unsuccessful read or access operation.

keepMarker

private boolean keepMarker(int marker,
 int[] markers)

readSegments

public List<Segment> readSegments(ByteSource byteSource,
 int[] markers,
 boolean returnAfterFirst,
 boolean readEverything)
                           throws ImageReadException,
IOException

Throws:

ImageReadException

IOException

assembleSegments

private byte[] assembleSegments(List<App2Segment> segments)
                         throws ImageReadException

Throws:

ImageReadException

assembleSegments

private byte[] assembleSegments(List<App2Segment> segments,
 boolean startWithZero)
                         throws ImageReadException

Throws:

ImageReadException

dumpSegments

private void dumpSegments(List<? extends Segment> v)

readSegments

public List<Segment> readSegments(ByteSource byteSource,
 int[] markers,
 boolean returnAfterFirst)
                           throws ImageReadException,
IOException

Throws:

ImageReadException

IOException

getICCProfileBytes

public byte[] getICCProfileBytes(ByteSource byteSource,
 Map<String,Object> params)
                          throws ImageReadException,
IOException

Description copied from class: ImageParser

Get an array of bytes describing the International Color Consortium (ICC) specification for the color space of the image contained in the input byteSource. Not all formats support ICC profiles.

Specified by:

getICCProfileBytes in class ImageParser

Parameters:

byteSource - A valid ByteSource.

params - Optional instructions for special-handling or interpretation of the input data.

Returns:

If available, a valid array of bytes; otherwise, a null

Throws:

ImageReadException - In the event that the specified content does not conform to the format of the specific parser implementation.

IOException - In the event of unsuccessful read or access operation.

getMetadata

public ImageMetadata getMetadata(ByteSource byteSource,
 Map<String,Object> params)
                          throws ImageReadException,
IOException

Description copied from class: ImageParser

Get image metadata from the specified byte source. Format-specific ImageParser implementations are expected to return a valid IImageMetadata object or to throw an ImageReadException if unable to process the specified byte source.

The params argument provides a mechanism for individual implementations to pass optional information into the parser. Not all formats will require this capability. Because the base class may call this method with a null params argument, implementations should always include logic for ignoring null input.

Specified by:

getMetadata in class ImageParser

Parameters:

byteSource - A valid byte source.

params - Optional instructions for special-handling or interpretation of the input data (null objects are permitted and must be supported by implementations).

Returns:

A valid, potentially subject-matter-specific implementation of the IImageMetadata interface describing the content extracted from the source content.

Throws:

ImageReadException - In the event that the ByteSource content does not conform to the format of the specific parser implementation.

IOException - In the event of unsuccessful data read operation.

isExifAPP1Segment

public static boolean isExifAPP1Segment(GenericSegment segment)

filterAPP1Segments

private List<Segment> filterAPP1Segments(List<Segment> segments)

getExifMetadata

public TiffImageMetadata getExifMetadata(ByteSource byteSource,
 Map<String,Object> params)
                                  throws ImageReadException,
IOException

Throws:

ImageReadException

IOException

getExifRawData

public byte[] getExifRawData(ByteSource byteSource)
                      throws ImageReadException,
IOException

Throws:

ImageReadException

IOException

hasExifSegment

public boolean hasExifSegment(ByteSource byteSource)
                       throws ImageReadException,
IOException

Throws:

ImageReadException

IOException

hasIptcSegment

public boolean hasIptcSegment(ByteSource byteSource)
                       throws ImageReadException,
IOException

Throws:

ImageReadException

IOException

hasXmpSegment

public boolean hasXmpSegment(ByteSource byteSource)
                      throws ImageReadException,
IOException

Throws:

ImageReadException

IOException

getXmpXml

public String getXmpXml(ByteSource byteSource,
 Map<String,Object> params)
                 throws ImageReadException,
IOException

Extracts embedded XML metadata as XML string.

Specified by:

getXmpXml in interface XmpEmbeddable

Parameters:

byteSource - File containing image data.

params - Map of optional parameters, defined in ImagingConstants.

Returns:

Xmp Xml as String, if present. Otherwise, returns null.

Throws:

ImageReadException - In the event that the specified content does not conform to the format of the specific parser implementation.

IOException - In the event of unsuccessful read or access operation.

getPhotoshopMetadata

public JpegPhotoshopMetadata getPhotoshopMetadata(ByteSource byteSource,
 Map<String,Object> params)
                                           throws ImageReadException,
IOException

Throws:

ImageReadException

IOException

getImageSize

public Dimension getImageSize(ByteSource byteSource,
 Map<String,Object> params)
                       throws ImageReadException,
IOException

Description copied from class: ImageParser

Get the size of the image described by the specified ByteSource.

Specified by:

getImageSize in class ImageParser

Parameters:

byteSource - A valid reference to a ByteSource.

params - Optional instructions for special-handling or interpretation of the input data.

Returns:

A valid instance of Dimension.

Throws:

ImageReadException - In the event that the specified content does not conform to the format of the specific parser implementation.

IOException - In the event of unsuccessful read or access operation.

getImageInfo

public ImageInfo getImageInfo(ByteSource byteSource,
 Map<String,Object> params)
                       throws ImageReadException,
IOException

Description copied from class: ImageParser

Get image information from the specified ByteSource. Format-specific ImageParser implementations are expected to return a valid ImageInfo object or to throw an ImageReadException if unable to process the specified data.

The params argument provides a mechanism for individual implementations to pass optional information into the parser. Not all formats will require this capability. Because the base class may call this method with a null params argument, implementations should always include logic for ignoring null input.

Specified by:

getImageInfo in class ImageParser

Parameters:

byteSource - A valid ByteSource object

params - Optional instructions for special-handling or interpretation of the input data (null objects are permitted and must be supported by implementations).

Returns:

A valid image information object describing the content extracted from the specified data.

Throws:

ImageReadException - In the event that the specified content does not conform to the format of the specific parser implementation.

IOException - In the event of unsuccessful data access operation.

dumpImageFile

public boolean dumpImageFile(PrintWriter pw,
 ByteSource byteSource)
                      throws ImageReadException,
IOException

Description copied from class: ImageParser

Write the ImageInfo and format-specific information for the image content of the specified byte source to a PrintWriter

Overrides:

dumpImageFile in class ImageParser

Parameters:

pw - print writer used for writing the ImageInfo

byteSource - A valid byte source.

Returns:

A valid PrintWriter.

Throws:

ImageReadException - In the event that the specified content does not conform to the format of the specific parser implementation.

IOException - In the event of unsuccessful read or access operation.