Package com.idrsolutions.image.jpeg

Class JpegDecoder

java.lang.Object

com.idrsolutions.image.JDeliImage

com.idrsolutions.image.jpeg.JpegDecoder

public class JpegDecoder
extends com.idrsolutions.image.JDeliImage

Class reads JPEG image as BufferedImage // Make NO assumptions about type of BufferedImage type returned (may change)

Example:

 JpegDecoder decoder = new JpegDecoder();
 BufferedImage decodedImage = decoder.read(jpegByteData);
 

Field Summary

Fields

Modifier and Type	Field	Description
static byte[]	ZIGZAGORDER

Constructor Summary

Constructors

Constructor	Description
JpegDecoder()

Method Summary

Modifier and Type	Method	Description
com.idrsolutions.image.jpeg.Info	getInfo()	Returns the JPEG information object
BufferedImage	read(byte[] jpegRawData)	Make NO assumptions about BufferedImage type returned as it may change
byte[]	readAsUnconvertedBytes(byte[] jpegRawData, int adobeColorTransform)	Not recommended for external use.
byte[]	readComponentsAsConvertedBytes(byte[] jpegRawData)	Not recommended for external use.
byte[]	readComponentsAsRawBytes(byte[] jpegRawData)	Not recommended for external use.
void	setInverted(boolean inverted)	Not recommended for external use.

Methods inherited from class java.lang.Object

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

Field Detail

ZIGZAGORDER

public static final byte[] ZIGZAGORDER

Constructor Detail

JpegDecoder

public JpegDecoder()

Method Detail

read

public BufferedImage read(byte[] jpegRawData)
                   throws Exception

Make NO assumptions about BufferedImage type returned as it may change

Decodes and returns the JPEG image as a BufferedImage from bytes

Parameters:

jpegRawData - byte[] containing the JPEG data to be decoded

Returns:

BufferedImage The decoded image

Throws:

Exception

readComponentsAsRawBytes

public byte[] readComponentsAsRawBytes(byte[] jpegRawData)
                                throws Exception

Not recommended for external use.

Decodes JPEG image data as non converted bytes. Please note this method does not perform YCBCR/CMYK/YCCK to RGB/gray conversion.

Parameters:

jpegRawData - byte[] containing the raw JPEG data

Returns:

byte[] YCBCR converted data of the JPEG

Throws:

Exception - Provides for different exceptions thrown under Java Lang package

readComponentsAsConvertedBytes

public byte[] readComponentsAsConvertedBytes(byte[] jpegRawData)
                                      throws Exception

Not recommended for external use.

Decodes JPEG image data as converted(RGB/gray) bytes

Parameters:

jpegRawData - byte[] array containing the JPEG dataoPngChunk

Returns:

converted JPEG byte[]

Throws:

Exception - Provides for different exceptions thrown under java Lang package

readAsUnconvertedBytes

public byte[] readAsUnconvertedBytes(byte[] jpegRawData,
                                     int adobeColorTransform)
                              throws Exception

Not recommended for external use.

Decodes JPEG image data as un-converted(RGB/gray) bytes

Parameters:

jpegRawData - byte[] array containing the un-converted JPEG bytes

Returns:

converted JPEG byte[]

Throws:

Exception - Provides for different exceptions thrown under java Lang package

setInverted

public void setInverted(boolean inverted)

Not recommended for external use. Inverts CMYK

Parameters:

inverted - set true for CMYK inversion

getInfo

public com.idrsolutions.image.jpeg.Info getInfo()

Returns the JPEG information object

Returns:

JPEG information object