com.ajtjp.jImageReader.reader.workInProgress

Class JFIFReader

java.lang.Object

com.ajtjp.jImageReader.reader.workInProgress.JFIFReader

All Implemented Interfaces:

JImageReader

public class JFIFReader
extends Object
implements JImageReader

Incomplete (not yet functional) JPEG reader implementation.

Author:

Andrew

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	JFIFReader.ImageComponent
class	JFIFReader.QuantizationTable

Constructor Summary

Constructors

Constructor and Description
JFIFReader(String string)

Method Summary

Modifier and Type	Method and Description
int	convertDCToDecimal(int dcCodeBits, short bits) Takes a DC Code and the next dcCode number of bits after it, and converts it into decimal.
void	createBufferedImage() Creates a BufferedImage from the PCX image.
int	getHeight() Returns the image's height.
BufferedImage	getImage() Returns the image that the reader has imported.
String	getMetadataSummary() Returns a summary of the image's metadata.
int	getWidth() Returns the image's width.
void	parse()
void	processFile() Processes the file supplied at initialization, and stores the image in the reader.
void	readFile()

Methods inherited from class java.lang.Object

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

Constructor Detail

JFIFReader

public JFIFReader(String string)

Method Detail

processFile

public void processFile()
                 throws IllegalDataException,
                        UnsupportedVariantException

Description copied from interface: JImageReader

Processes the file supplied at initialization, and stores the image in the reader.

Specified by:

processFile in interface JImageReader

Throws:

IllegalDataException - If the data is not valid for this type of reader.

UnsupportedVariantException - If the supplied file is a variant of the reader's format that is not supported.

parse

public void parse()
           throws IllegalDataException,
                  UnsupportedVariantException

Throws:

IllegalDataException

UnsupportedVariantException

convertDCToDecimal

public int convertDCToDecimal(int dcCodeBits,
                              short bits)

Takes a DC Code and the next dcCode number of bits after it, and converts it into decimal.

Parameters:

dcCodeBits - The DC Code (which is also the size)

bits - The next dcCodeBits bits

Returns:

The decimal value calculated from this

readFile

public void readFile()

createBufferedImage

public void createBufferedImage()

Creates a BufferedImage from the PCX image.

getWidth

public int getWidth()

Description copied from interface: JImageReader

Returns the image's width.

Specified by:

getWidth in interface JImageReader

Returns:

The image's width.

getHeight

public int getHeight()

Description copied from interface: JImageReader

Returns the image's height.

Specified by:

getHeight in interface JImageReader

Returns:

The image's height.

getMetadataSummary

public String getMetadataSummary()

Description copied from interface: JImageReader

Returns a summary of the image's metadata. This will likely not be a String in future releases.

Specified by:

getMetadataSummary in interface JImageReader

Returns:

A summary fo the image's metadata.

getImage

public BufferedImage getImage()

Description copied from interface: JImageReader

Returns the image that the reader has imported.

Specified by:

getImage in interface JImageReader

Returns:

The image that has been read from the file.