| /* ClutProfileConverter.java -- Conversion routines for CLUT-Based profiles |
| Copyright (C) 2004 Free Software Foundation |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath 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 for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. |
| */ |
| |
| package gnu.java.awt.color; |
| |
| import java.awt.color.ICC_Profile; |
| |
| |
| /** |
| * ClutProfileConverter - conversions through a CLUT-based profile |
| * |
| * @author Sven de Marothy |
| */ |
| public class ClutProfileConverter implements ColorSpaceConverter |
| { |
| private ColorLookUpTable toPCS; |
| private ColorLookUpTable fromPCS; |
| private int nChannels; |
| |
| public ClutProfileConverter(ICC_Profile profile) |
| { |
| nChannels = profile.getNumComponents(); |
| |
| // Sun does not specifiy which rendering intent should be used, |
| // neither does the ICC v2 spec really. |
| // Try intent 0 |
| try |
| { |
| toPCS = new ColorLookUpTable(profile, ICC_Profile.icSigAToB0Tag); |
| } |
| catch (Exception e) |
| { |
| toPCS = null; |
| } |
| |
| try |
| { |
| fromPCS = new ColorLookUpTable(profile, ICC_Profile.icSigBToA0Tag); |
| } |
| catch (Exception e) |
| { |
| fromPCS = null; |
| } |
| |
| if (toPCS != null || fromPCS != null) |
| return; |
| |
| // If no intent 0 clut is available, look for a intent 1 clut. |
| try |
| { |
| toPCS = new ColorLookUpTable(profile, ICC_Profile.icSigAToB1Tag); |
| } |
| catch (Exception e) |
| { |
| toPCS = null; |
| } |
| |
| try |
| { |
| fromPCS = new ColorLookUpTable(profile, ICC_Profile.icSigBToA1Tag); |
| } |
| catch (Exception e) |
| { |
| fromPCS = null; |
| } |
| |
| if (toPCS != null || fromPCS != null) |
| return; |
| |
| // Last shot.. intent 2 CLUT. |
| try |
| { |
| toPCS = new ColorLookUpTable(profile, ICC_Profile.icSigAToB2Tag); |
| } |
| catch (Exception e) |
| { |
| toPCS = null; |
| } |
| |
| try |
| { |
| fromPCS = new ColorLookUpTable(profile, ICC_Profile.icSigBToA2Tag); |
| } |
| catch (Exception e) |
| { |
| fromPCS = null; |
| } |
| |
| if (toPCS == null && fromPCS == null) |
| throw new IllegalArgumentException("No CLUTs in profile!"); |
| } |
| |
| public float[] toCIEXYZ(float[] in) |
| { |
| if (toPCS != null) |
| return toPCS.lookup(in); |
| else |
| return new float[3]; |
| } |
| |
| public float[] toRGB(float[] in) |
| { |
| return SrgbConverter.XYZtoRGB(toCIEXYZ(in)); |
| } |
| |
| public float[] fromCIEXYZ(float[] in) |
| { |
| if (fromPCS != null) |
| return fromPCS.lookup(in); |
| else |
| return new float[nChannels]; |
| } |
| |
| public float[] fromRGB(float[] in) |
| { |
| return fromCIEXYZ(SrgbConverter.RGBtoXYZ(in)); |
| } |
| } |