org.w3c.tools.jpeg
Class JpegHeaders

java.lang.Object
  org.w3c.tools.jpeg.JpegHeaders

All Implemented Interfaces:

Jpeg

public class JpegHeaders
extends java.lang.Object
implements Jpeg

Field Summary

protected byte[][]	appcomments
protected int	bitsPerPixel
protected java.lang.String[]	comments
protected int	compression
protected Exif	exif
protected int	height
protected java.io.InputStream	in
protected java.io.File	jpegfile
protected int	numComponents
protected java.util.Vector[]	vacom
protected java.util.Vector	vcom
protected int	width

Fields inherited from interface org.w3c.tools.jpeg.Jpeg

M_APP0, M_APP1, M_APP10, M_APP11, M_APP12, M_APP13, M_APP14, M_APP15, M_APP2, M_APP3, M_APP4, M_APP5, M_APP6, M_APP7, M_APP8, M_APP9, M_COM, M_EOI, M_MAX_COM_LENGTH, M_SOF0, M_SOF1, M_SOF10, M_SOF11, M_SOF13, M_SOF14, M_SOF15, M_SOF2, M_SOF3, M_SOF5, M_SOF6, M_SOF7, M_SOF9, M_SOI, M_SOS

Constructor Summary

JpegHeaders(java.io.File jpegfile)
get the headers out of a file, ignoring EXIF

JpegHeaders(java.io.File jpegfile, Exif exif)
get the headers out of a file, including EXIF

JpegHeaders(java.io.InputStream in)
get the headers out of a stream, ignoring EXIF

JpegHeaders(java.io.InputStream in, Exif exif)
get the headers out of a stream, including EXIF

Method Summary

protected int	firstMarker()
java.lang.String[]	getAppComments() Deprecated. use getStringAppComments instead
byte[][]	getByteArrayAPPComment()
java.lang.String[]	getComments() Get the comments extracted from the jpeg stream
java.lang.String[]	getStringAppComments() An old default, it gets only the M_APP12
java.lang.String[]	getStringAPPComments(int marker) Get the application specific values extracted from the jpeg stream
java.lang.String	getXMP() A get XMP in APP1
static void	main(java.lang.String[] args)
protected int	nextMarker()
protected void	parseJpeg(java.io.File jpegfile, Exif exif)
protected byte[]	processComment()
protected int	read2bytes()
protected int	read2bytes(java.io.StringReader sr)
protected void	readImageInfo() read the image info then the section
protected int	scanHeaders()
protected void	skipVariable() skip the body after a marker
protected void	updateExif() Update the EXIF to include the intrinsic values

Methods inherited from class java.lang.Object

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

Field Detail

jpegfile

protected java.io.File jpegfile

in

protected java.io.InputStream in

vcom

protected java.util.Vector vcom

vacom

protected java.util.Vector[] vacom

comments

protected java.lang.String[] comments

appcomments

protected byte[][] appcomments

exif

protected Exif exif

compression

protected int compression

bitsPerPixel

protected int bitsPerPixel

height

protected int height

width

protected int width

numComponents

protected int numComponents

Constructor Detail

JpegHeaders

public JpegHeaders(java.io.File jpegfile)
            throws java.io.FileNotFoundException,
                   JpegException,
                   java.io.IOException

get the headers out of a file, ignoring EXIF

Throws:

java.io.FileNotFoundException

JpegException

java.io.IOException

JpegHeaders

public JpegHeaders(java.io.File jpegfile,
                   Exif exif)
            throws java.io.FileNotFoundException,
                   JpegException,
                   java.io.IOException

get the headers out of a file, including EXIF

Throws:

java.io.FileNotFoundException

JpegException

java.io.IOException

JpegHeaders

public JpegHeaders(java.io.InputStream in)
            throws JpegException,
                   java.io.IOException

get the headers out of a stream, ignoring EXIF

Throws:

JpegException

java.io.IOException

JpegHeaders

public JpegHeaders(java.io.InputStream in,
                   Exif exif)
            throws JpegException,
                   java.io.IOException

get the headers out of a stream, including EXIF

Throws:

JpegException

java.io.IOException

Method Detail

getComments

public java.lang.String[] getComments()

Get the comments extracted from the jpeg stream

Returns:

an array of Strings

getStringAPPComments

public java.lang.String[] getStringAPPComments(int marker)

Get the application specific values extracted from the jpeg stream

Returns:

an array of Strings

getStringAppComments

public java.lang.String[] getStringAppComments()

An old default, it gets only the M_APP12

getXMP

public java.lang.String getXMP()
                        throws java.io.IOException,
                               JpegException

A get XMP in APP1

Throws:

java.io.IOException

JpegException

getByteArrayAPPComment

public byte[][] getByteArrayAPPComment()

getAppComments

public java.lang.String[] getAppComments()

Deprecated. use getStringAppComments instead

The old way of extracting comments in M_APP12 markers

scanHeaders

protected int scanHeaders()
                   throws java.io.IOException,
                          JpegException

Throws:

java.io.IOException

JpegException

updateExif

protected void updateExif()

Update the EXIF to include the intrinsic values

processComment

protected byte[] processComment()
                         throws java.io.IOException,
                                JpegException

Throws:

java.io.IOException

JpegException

read2bytes

protected int read2bytes()
                  throws java.io.IOException,
                         JpegException

Throws:

java.io.IOException

JpegException

read2bytes

protected int read2bytes(java.io.StringReader sr)
                  throws java.io.IOException,
                         JpegException

Throws:

java.io.IOException

JpegException

skipVariable

protected void skipVariable()
                     throws java.io.IOException,
                            JpegException

skip the body after a marker

Throws:

java.io.IOException

JpegException

readImageInfo

protected void readImageInfo()
                      throws java.io.IOException,
                             JpegException

read the image info then the section

Throws:

java.io.IOException

JpegException

firstMarker

protected int firstMarker()
                   throws java.io.IOException,
                          JpegException

Throws:

java.io.IOException

JpegException

nextMarker

protected int nextMarker()
                  throws java.io.IOException

Throws:

java.io.IOException

parseJpeg

protected void parseJpeg(java.io.File jpegfile,
                         Exif exif)
                  throws java.io.FileNotFoundException,
                         JpegException,
                         java.io.IOException

Throws:

java.io.FileNotFoundException

JpegException

java.io.IOException

main

public static void main(java.lang.String[] args)