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/* ICC_ProfileGray.java -- the ICC profile for a Gray colorspace |
/* ICC_ProfileGray.java -- the ICC profile for a Gray colorspace |
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Copyright (C) 2002 Free Software Foundation, Inc. |
Copyright (C) 2002, 2004 Free Software Foundation, Inc. |
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This file is part of GNU Classpath. |
This file is part of GNU Classpath. |
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GNU Classpath is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2, or (at your option) |
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any later version. |
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GNU Classpath is distributed in the hope that it will be useful, but |
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WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with GNU Classpath; see the file COPYING. If not, write to the |
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Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
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02111-1307 USA. |
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Linking this library statically or dynamically with other modules is |
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making a combined work based on this library. Thus, the terms and |
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conditions of the GNU General Public License cover the whole |
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combination. |
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As a special exception, the copyright holders of this library give you |
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permission to link this library with independent modules to produce an |
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executable, regardless of the license terms of these independent |
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modules, and to copy and distribute the resulting executable under |
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terms of your choice, provided that you also meet, for each linked |
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independent module, the terms and conditions of the license of that |
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module. An independent module is a module which is not derived from |
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or based on this library. If you modify this library, you may extend |
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this exception to your version of the library, but you are not |
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obligated to do so. If you do not wish to do so, delete this |
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exception statement from your version. */ |
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GNU Classpath is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2, or (at your option) |
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any later version. |
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GNU Classpath is distributed in the hope that it will be useful, but |
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WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with GNU Classpath; see the file COPYING. If not, write to the |
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Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
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02111-1307 USA. |
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|
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Linking this library statically or dynamically with other modules is |
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making a combined work based on this library. Thus, the terms and |
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conditions of the GNU General Public License cover the whole |
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combination. |
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As a special exception, the copyright holders of this library give you |
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permission to link this library with independent modules to produce an |
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executable, regardless of the license terms of these independent |
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modules, and to copy and distribute the resulting executable under |
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terms of your choice, provided that you also meet, for each linked |
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independent module, the terms and conditions of the license of that |
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module. An independent module is a module which is not derived from |
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or based on this library. If you modify this library, you may extend |
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this exception to your version of the library, but you are not |
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obligated to do so. If you do not wish to do so, delete this |
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exception statement from your version. */ |
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package java.awt.color; |
package java.awt.color; |
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/** |
/** |
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* STUBBED |
* ICC_ProfileGray - a special case of ICC_Profiles. |
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* |
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* The ICC_Profile.getInstance() method will return an instance of the |
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* ICC_ProfileGray subclass when all the following conditions are met: |
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* The device color space of the profile is TYPE_GRAY. |
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* The profile contains a gray TRCTag. |
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* The profile contains a mediaWhitePointTag. |
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* |
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* As per the ICC specification, the color space conversion can then |
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* be done through the following method: |
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* linearGray = grayTRC[deviceGray] |
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* |
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* Note that if the profile contains a CLUT for the color space conversion, |
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* it should be used instead, and the TRC information ignored. |
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* |
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* @author Sven de Marothy |
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* @since 1.2 |
* @since 1.2 |
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*/ |
*/ |
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public class ICC_ProfileGray extends ICC_Profile |
public class ICC_ProfileGray extends ICC_Profile |
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* Compatible with JDK 1.2+. |
* Compatible with JDK 1.2+. |
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*/ |
*/ |
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private static final long serialVersionUID = -1124721290732002649L; |
private static final long serialVersionUID = -1124721290732002649L; |
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private transient float[] whitePoint; |
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/** |
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* Package-private constructor used by ICC_ColorSpace for creating an |
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* ICC_ProfileGray from a predefined ColorSpace (CS_GRAY) |
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*/ |
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ICC_ProfileGray(int cspace) |
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{ |
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super(cspace); |
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whitePoint = getXYZData(icSigMediaWhitePointTag); |
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} |
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ICC_ProfileGray() |
/** |
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* Package-private constructor used by ICC_ColorSpace for creating an |
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* ICC_ProfileGray from profile data. |
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*/ |
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ICC_ProfileGray(byte[] data) |
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{ |
{ |
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super(ColorSpace.CS_GRAY); |
super(data); |
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whitePoint = getXYZData(icSigMediaWhitePointTag); |
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} |
} |
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/** |
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* Returns the media white point of the profile. |
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*/ |
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public float[] getMediaWhitePoint() |
public float[] getMediaWhitePoint() |
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{ |
{ |
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return null; |
float[] wp = new float[3]; |
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wp[0] = whitePoint[0]; |
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wp[1] = whitePoint[1]; |
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wp[2] = whitePoint[2]; |
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return wp; |
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} |
} |
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/** |
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* Returns the TRC gamma value. |
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* @throws ProfileDataException if the TRC is described by a lookup |
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* table and not a gamma value. |
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*/ |
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public float getGamma() |
public float getGamma() |
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{ |
{ |
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return 0; |
short[] data = getCurve(icSigGrayTRCTag); |
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if (data == null) |
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throw new IllegalArgumentException("Couldn't read Gray TRC data."); |
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if (data.length != 1) |
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throw new ProfileDataException("TRC is a table, not a gamma value."); |
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// convert the unsigned 7.8 fixed-point gamma to a float. |
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double gamma = (double) (data[0] & (0xFFFF)) / 256.0; |
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return (float) gamma; |
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} |
} |
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/** |
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* Returns the TRC lookup table. |
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* @throws ProfileDataException if the TRC is described by a gamma value |
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* and not a lookup table. |
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*/ |
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public short[] getTRC() |
public short[] getTRC() |
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{ |
{ |
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return null; |
short[] data = getCurve(icSigGrayTRCTag); |
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if (data == null) |
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throw new IllegalArgumentException("Couldn't read Gray TRC data."); |
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if (data.length <= 1) |
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throw new ProfileDataException("Gamma value, not a TRC table."); |
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return data; |
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} |
} |
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} // class ICC_ProfileGray |
} // class ICC_ProfileGray |