The ICC_ProfileRGB.java Java example source code
/*
* Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
**********************************************************************
**********************************************************************
**********************************************************************
*** COPYRIGHT (c) Eastman Kodak Company, 1997 ***
*** As an unpublished work pursuant to Title 17 of the United ***
*** States Code. All rights reserved. ***
**********************************************************************
**********************************************************************
**********************************************************************/
package java.awt.color;
import sun.java2d.cmm.Profile;
import sun.java2d.cmm.ProfileDeferralInfo;
/**
*
* The ICC_ProfileRGB class is a subclass of the ICC_Profile class
* that represents profiles which meet the following criteria:
* <ul>
* <li>The profile's color space type is RGB.
* <li>The profile includes the redColorantTag,
* <code>greenColorantTag, blueColorantTag,
* <code>redTRCTag, greenTRCTag,
* <code>blueTRCTag, and mediaWhitePointTag tags.
* </ul>
* The <code>ICC_Profile getInstance method will
* return an <code>ICC_ProfileRGB object when these conditions are met.
* Three-component, matrix-based input profiles and RGB display profiles are
* examples of this type of profile.
* <p>
* This profile class provides color transform matrices and lookup tables
* that Java or native methods can use directly to
* optimize color conversion in some cases.
* <p>
* To transform from a device profile color space to the CIEXYZ Profile
* Connection Space, each device color component is first linearized by
* a lookup through the corresponding tone reproduction curve (TRC).
* The resulting linear RGB components are converted to the CIEXYZ PCS
* using a a 3x3 matrix constructed from the RGB colorants.
* <pre>
*
* linearR = redTRC[deviceR]
*
* linearG = greenTRC[deviceG]
*
* linearB = blueTRC[deviceB]
*
* _ _ _ _ _ _
* [ PCSX ] [ redColorantX greenColorantX blueColorantX ] [ linearR ]
* [ ] [ ] [ ]
* [ PCSY ] = [ redColorantY greenColorantY blueColorantY ] [ linearG ]
* [ ] [ ] [ ]
* [_ PCSZ _] [_ redColorantZ greenColorantZ blueColorantZ _] [_ linearB _]
*
* </pre>
* The inverse transform is performed by converting PCS XYZ components to linear
* RGB components through the inverse of the above 3x3 matrix, and then converting
* linear RGB to device RGB through inverses of the TRCs.
*/
public class ICC_ProfileRGB
extends ICC_Profile {
static final long serialVersionUID = 8505067385152579334L;
/**
* Used to get a gamma value or TRC for the red component.
*/
public static final int REDCOMPONENT = 0;
/**
* Used to get a gamma value or TRC for the green component.
*/
public static final int GREENCOMPONENT = 1;
/**
* Used to get a gamma value or TRC for the blue component.
*/
public static final int BLUECOMPONENT = 2;
/**
* Constructs an new <code>ICC_ProfileRGB from a CMM ID.
*
* @param p The CMM ID for the profile.
*
*/
ICC_ProfileRGB(Profile p) {
super(p);
}
/**
* Constructs a new <code>ICC_ProfileRGB from a
* ProfileDeferralInfo object.
*
* @param pdi
*/
ICC_ProfileRGB(ProfileDeferralInfo pdi) {
super(pdi);
}
/**
* Returns an array that contains the components of the profile's
* <CODE>mediaWhitePointTag.
*
* @return A 3-element <CODE>float array containing the x, y,
* and z components of the profile's <CODE>mediaWhitePointTag.
*/
public float[] getMediaWhitePoint() {
return super.getMediaWhitePoint();
}
/**
* Returns a 3x3 <CODE>float matrix constructed from the
* X, Y, and Z components of the profile's <CODE>redColorantTag,
* <CODE>greenColorantTag, and blueColorantTag.
* <p>
* This matrix can be used for color transforms in the forward
* direction of the profile--from the profile color space
* to the CIEXYZ PCS.
*
* @return A 3x3 <CODE>float array that contains the x, y, and z
* components of the profile's <CODE>redColorantTag,
* <CODE>greenColorantTag, and blueColorantTag.
*/
public float[][] getMatrix() {
float[][] theMatrix = new float[3][3];
float[] tmpMatrix;
tmpMatrix = getXYZTag(ICC_Profile.icSigRedColorantTag);
theMatrix[0][0] = tmpMatrix[0];
theMatrix[1][0] = tmpMatrix[1];
theMatrix[2][0] = tmpMatrix[2];
tmpMatrix = getXYZTag(ICC_Profile.icSigGreenColorantTag);
theMatrix[0][1] = tmpMatrix[0];
theMatrix[1][1] = tmpMatrix[1];
theMatrix[2][1] = tmpMatrix[2];
tmpMatrix = getXYZTag(ICC_Profile.icSigBlueColorantTag);
theMatrix[0][2] = tmpMatrix[0];
theMatrix[1][2] = tmpMatrix[1];
theMatrix[2][2] = tmpMatrix[2];
return theMatrix;
}
/**
* Returns a gamma value representing the tone reproduction curve
* (TRC) for a particular component. The component parameter
* must be one of REDCOMPONENT, GREENCOMPONENT, or BLUECOMPONENT.
* <p>
* If the profile
* represents the TRC for the corresponding component
* as a table rather than a single gamma value, an
* exception is thrown. In this case the actual table
* can be obtained through the {@link #getTRC(int)} method.
* When using a gamma value,
* the linear component (R, G, or B) is computed as follows:
* <pre>
*
* gamma
* linearComponent = deviceComponent
*
*</pre>
* @param component The <CODE>ICC_ProfileRGB constant that
* represents the component whose TRC you want to retrieve
* @return the gamma value as a float.
* @exception ProfileDataException if the profile does not specify
* the corresponding TRC as a single gamma value.
*/
public float getGamma(int component) {
float theGamma;
int theSignature;
switch (component) {
case REDCOMPONENT:
theSignature = ICC_Profile.icSigRedTRCTag;
break;
case GREENCOMPONENT:
theSignature = ICC_Profile.icSigGreenTRCTag;
break;
case BLUECOMPONENT:
theSignature = ICC_Profile.icSigBlueTRCTag;
break;
default:
throw new IllegalArgumentException("Must be Red, Green, or Blue");
}
theGamma = super.getGamma(theSignature);
return theGamma;
}
/**
* Returns the TRC for a particular component as an array.
* Component must be <code>REDCOMPONENT,
* <code>GREENCOMPONENT, or BLUECOMPONENT.
* Otherwise the returned array
* represents a lookup table where the input component value
* is conceptually in the range [0.0, 1.0]. Value 0.0 maps
* to array index 0 and value 1.0 maps to array index length-1.
* Interpolation might be used to generate output values for
* input values that do not map exactly to an index in the
* array. Output values also map linearly to the range [0.0, 1.0].
* Value 0.0 is represented by an array value of 0x0000 and
* value 1.0 by 0xFFFF. In other words, the values are really unsigned
* <code>short values even though they are returned in a
* <code>short array.
*
* If the profile has specified the corresponding TRC
* as linear (gamma = 1.0) or as a simple gamma value, this method
* throws an exception. In this case, the {@link #getGamma(int)}
* method should be used to get the gamma value.
*
* @param component The <CODE>ICC_ProfileRGB constant that
* represents the component whose TRC you want to retrieve:
* <CODE>REDCOMPONENT, GREENCOMPONENT, or
* <CODE>BLUECOMPONENT.
*
* @return a short array representing the TRC.
* @exception ProfileDataException if the profile does not specify
* the corresponding TRC as a table.
*/
public short[] getTRC(int component) {
short[] theTRC;
int theSignature;
switch (component) {
case REDCOMPONENT:
theSignature = ICC_Profile.icSigRedTRCTag;
break;
case GREENCOMPONENT:
theSignature = ICC_Profile.icSigGreenTRCTag;
break;
case BLUECOMPONENT:
theSignature = ICC_Profile.icSigBlueTRCTag;
break;
default:
throw new IllegalArgumentException("Must be Red, Green, or Blue");
}
theTRC = super.getTRC(theSignature);
return theTRC;
}
}
Other Java examples (source code examples)
Here is a short list of links related to this Java ICC_ProfileRGB.java source code file:
The search page
Other Java source code examples at this package level
Click here to learn more about this project
