org.mmbase.util.images

Class JAIImageConverter

java.lang.Object

org.mmbase.util.images.AbstractImageConverter

org.mmbase.util.images.JAIImageConverter

All Implemented Interfaces:

ImageConverter

public class JAIImageConverter
extends AbstractImageConverter
implements ImageConverter

Converts Images using image Java Advanced Imaging

Version:

$Id$

Author:

Daniel Ockeloen, Martijn Houtman (JAI fix)

Constructor Summary

Constructors

Constructor and Description
JAIImageConverter()

Method Summary

Modifier and Type	Method and Description
protected static javax.media.jai.PlanarImage	border(javax.media.jai.PlanarImage inImg, int xpadding, int ypadding) Performs the 'border' operation: Adds a border to an image using the specified horizontal and vertical padding.
byte[]	convertImage(byte[] input, String sourceFormat, List<String> commands) This functions converts an image by the given parameters
protected static javax.media.jai.PlanarImage	crop(javax.media.jai.PlanarImage inImg, int x1, int y1, int x2, int y2)
protected static javax.media.jai.PlanarImage	flip(javax.media.jai.PlanarImage inImg) Performs the 'flip' or 'flipy' operation: Flip an image across an imaginary vertical line that runs through the center of the image.
protected static javax.media.jai.PlanarImage	flop(javax.media.jai.PlanarImage inImg) Performs the 'flop' or 'flipx' operation: Flip an image across an imaginary horizontal line that runs through the center of the image.
void	init(Map<String,String> params)
protected static javax.media.jai.PlanarImage	loadImage(String filename)
protected static javax.media.jai.PlanarImage	negate(javax.media.jai.PlanarImage inImg) Performs the 'dia' or 'negate' operation.
protected static javax.media.jai.PlanarImage	rotate(javax.media.jai.PlanarImage inImg, int x, int y, int a) Performs the 'rotate' operation: rotates an image.
protected static javax.media.jai.PlanarImage	size(javax.media.jai.PlanarImage inImg, int width, int height, boolean maintainAspectRation) Performs the 's' or 'geometry' operation: Resize an image using specified width and height.

Methods inherited from class org.mmbase.util.images.AbstractImageConverter

convertImage

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.mmbase.util.images.ImageConverter

convertImage

Constructor Detail

JAIImageConverter

public JAIImageConverter()

Method Detail

init

public void init(Map<String,String> params)

Specified by:

init in interface ImageConverter

Overrides:

init in class AbstractImageConverter

See Also:

ImageConverter.init(java.util.Map)

Javadoc:

convertImage

public byte[] convertImage(byte[] input,
                           String sourceFormat,
                           List<String> commands)

Description copied from interface: ImageConverter

This functions converts an image by the given parameters

Specified by:

convertImage in interface ImageConverter

Overrides:

convertImage in class AbstractImageConverter

Parameters:

input - an array of byte which represents the original image

sourceFormat - original image format

commands - a List of Strings containing commands which are operations on the image which will be returned.

Returns:

an array of bytes containing the new converted image.

See Also:

ImageConverter.convertImage(byte[], java.lang.String, java.util.List)

Javadoc:

crop

protected static javax.media.jai.PlanarImage crop(javax.media.jai.PlanarImage inImg,
                                                  int x1,
                                                  int y1,
                                                  int x2,
                                                  int y2)

Javadoc:

size

protected static javax.media.jai.PlanarImage size(javax.media.jai.PlanarImage inImg,
                                                  int width,
                                                  int height,
                                                  boolean maintainAspectRation)

Performs the 's' or 'geometry' operation: Resize an image using specified width and height.

Parameters:

inImg - the image to transform

width - new width of the image

height - new height of the image

maintainAspectRation - if true, width and height are maximums: aspect ratio is maintained

Returns:

the transformed image

negate

protected static javax.media.jai.PlanarImage negate(javax.media.jai.PlanarImage inImg)

Performs the 'dia' or 'negate' operation. Replace every pixel with its complementary color (white becomes black, yellow becomes blue, etc.)

Parameters:

inImg - the image to transform

Returns:

the transformed image

rotate

protected static javax.media.jai.PlanarImage rotate(javax.media.jai.PlanarImage inImg,
                                                    int x,
                                                    int y,
                                                    int a)

Performs the 'rotate' operation: rotates an image.

Parameters:

inImg - the image to transform

x - xposition of the rotation

y - yposition of the rotation

a - angle of the rotation

Returns:

the transformed image

border

protected static javax.media.jai.PlanarImage border(javax.media.jai.PlanarImage inImg,
                                                    int xpadding,
                                                    int ypadding)

Performs the 'border' operation: Adds a border to an image using the specified horizontal and vertical padding.

Parameters:

inImg - the image to transform

xpadding - the horizontal padding

ypadding - the vertical padding

Returns:

the transformed image

flop

protected static javax.media.jai.PlanarImage flop(javax.media.jai.PlanarImage inImg)

Performs the 'flop' or 'flipx' operation: Flip an image across an imaginary horizontal line that runs through the center of the image.

Parameters:

inImg - the image to transform

Returns:

the transformed image

flip

protected static javax.media.jai.PlanarImage flip(javax.media.jai.PlanarImage inImg)

Performs the 'flip' or 'flipy' operation: Flip an image across an imaginary vertical line that runs through the center of the image.

Parameters:

inImg - the image to transform

Returns:

the transformed image

loadImage

protected static javax.media.jai.PlanarImage loadImage(String filename)

Javadoc: