org.jpedal.io

Class ColorSpaceConvertor

java.lang.Object

org.jpedal.io.ColorSpaceConvertor

public class ColorSpaceConvertor
extends Object

set of static methods to save/load objects to convert images between different colorspaces -

Several methods are very similar and I should recode my code to use a common method for the RGB conversion

LogWriter is JPedal logging class

Field Summary

Fields

Modifier and Type	Field and Description
static boolean	isUsingARGB Flag to trigger raster printing

Constructor Summary

Constructors

Constructor and Description
ColorSpaceConvertor()

Method Summary

Modifier and Type	Method and Description
static BufferedImage	algorithmicConvertCMYKImageToRGB(byte[] buffer, int w, int h)
static BufferedImage	algorithmicConvertYCbCrToRGB(byte[] buffer, int w, int h) Convert YCbCr to RGB using formula.
static BufferedImage	convertColorspace(BufferedImage image, int newType) Convert a BufferedImage to RGB colourspace.
static BufferedImage	convertFromICCCMYK(int width, int height, byte[] data)
static BufferedImage	convertIndexedToFlat(int d, int w, int h, byte[] data, byte[] index, boolean isARGB, boolean isDownsampled)
static byte[]	convertIndexToRGBByte(byte[] index, int w, int h, int components, int d, byte[] data, boolean isDownsampled, boolean isARGB)
static BufferedImage	convertToARGB(BufferedImage image) convert a BufferedImage to RGB colourspace (used when I clip the image).
static BufferedImage	convertToRGB(BufferedImage image) convert any BufferedImage to RGB colourspace.
static BufferedImage	createARGBImage(int width, int height, byte[] data)
static WritableRaster	createCompatibleWritableRaaster(ColorModel colorModel, int w, int h)
static Raster	createInterleavedRaster(byte[] data, int w, int h)
static BufferedImage	createRGBImage(int width, int height, byte[] data)
static void	drawImage(Graphics2D g2, BufferedImage tileImg, AffineTransform tileAff, ImageObserver observer)
static void	flatten1bpc(int w, byte[] data, int comp, byte[] index, boolean isARGB, int length, int transparency, byte[] newData)
static void	flatten2bpc(int w, byte[] data, byte[] index, boolean isARGB, int length, byte[] newData) convert to RGB or gray.
static void	flatten4bpc(int w, byte[] data, int newSize, byte[] newData)
static void	flatten8bpc(byte[] data, boolean isDownsampled, float ratio, int id, int length, byte[] newData, byte[] index, int indexLength, boolean isARGB)
static BufferedImage	iccConvertCMYKImageToRGB(byte[] buffer, int w, int h) Convert YCC to CMY via formula and the CMYK to sRGB via profiles.
static byte[]	normaliseTo8Bit(int d, int w, int h, byte[] data)

Methods inherited from class java.lang.Object

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

Field Detail

isUsingARGB

public static boolean isUsingARGB

Flag to trigger raster printing

Constructor Detail

ColorSpaceConvertor

public ColorSpaceConvertor()

Method Detail

convertFromICCCMYK

public static BufferedImage convertFromICCCMYK(int width,
                                               int height,
                                               byte[] data)

convertToRGB

public static BufferedImage convertToRGB(BufferedImage image)

convert any BufferedImage to RGB colourspace.

Parameters:

image - is of type BufferedImage

Returns:

is of type BufferedImage

convertToARGB

public static BufferedImage convertToARGB(BufferedImage image)

convert a BufferedImage to RGB colourspace (used when I clip the image).

Parameters:

image - is of type BufferedImage

Returns:

is type BufferedImage

algorithmicConvertYCbCrToRGB

public static BufferedImage algorithmicConvertYCbCrToRGB(byte[] buffer,
                                                         int w,
                                                         int h)

Convert YCbCr to RGB using formula.

Parameters:

buffer - is of type byte[]

w - is of type final int

h - is of type final int

Returns:

BufferedImage

convertIndexedToFlat

public static BufferedImage convertIndexedToFlat(int d,
                                                 int w,
                                                 int h,
                                                 byte[] data,
                                                 byte[] index,
                                                 boolean isARGB,
                                                 boolean isDownsampled)

normaliseTo8Bit

public static byte[] normaliseTo8Bit(int d,
                                     int w,
                                     int h,
                                     byte[] data)
                              throws RuntimeException

Throws:

RuntimeException

convertIndexToRGBByte

public static byte[] convertIndexToRGBByte(byte[] index,
                                           int w,
                                           int h,
                                           int components,
                                           int d,
                                           byte[] data,
                                           boolean isDownsampled,
                                           boolean isARGB)

flatten8bpc

public static void flatten8bpc(byte[] data,
                               boolean isDownsampled,
                               float ratio,
                               int id,
                               int length,
                               byte[] newData,
                               byte[] index,
                               int indexLength,
                               boolean isARGB)

flatten1bpc

public static void flatten1bpc(int w,
                               byte[] data,
                               int comp,
                               byte[] index,
                               boolean isARGB,
                               int length,
                               int transparency,
                               byte[] newData)

flatten2bpc

public static void flatten2bpc(int w,
                               byte[] data,
                               byte[] index,
                               boolean isARGB,
                               int length,
                               byte[] newData)

convert to RGB or gray. If index is null we assume single component gray

Parameters:

w - is of type int

data - is of type byte[]

index - is of type byte[]

isARGB - is of type boolean

length - is of type int

newData - is of type byte[]

iccConvertCMYKImageToRGB

public static BufferedImage iccConvertCMYKImageToRGB(byte[] buffer,
                                                     int w,
                                                     int h)

Convert YCC to CMY via formula and the CMYK to sRGB via profiles.

Parameters:

buffer - is of type byte[]

w - is of type int

h - is of type int

Returns:

BufferedImage

convertColorspace

public static BufferedImage convertColorspace(BufferedImage image,
                                              int newType)

Convert a BufferedImage to RGB colourspace.

Parameters:

image - is of type BufferedImage

newType - is of type int

Returns:

BufferedImage

createCompatibleWritableRaaster

public static WritableRaster createCompatibleWritableRaaster(ColorModel colorModel,
                                                             int w,
                                                             int h)

createInterleavedRaster

public static Raster createInterleavedRaster(byte[] data,
                                             int w,
                                             int h)

drawImage

public static void drawImage(Graphics2D g2,
                             BufferedImage tileImg,
                             AffineTransform tileAff,
                             ImageObserver observer)

flatten4bpc

public static void flatten4bpc(int w,
                               byte[] data,
                               int newSize,
                               byte[] newData)

createRGBImage

public static BufferedImage createRGBImage(int width,
                                           int height,
                                           byte[] data)

createARGBImage

public static BufferedImage createARGBImage(int width,
                                            int height,
                                            byte[] data)

algorithmicConvertCMYKImageToRGB

public static BufferedImage algorithmicConvertCMYKImageToRGB(byte[] buffer,
                                                             int w,
                                                             int h)