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diff --git a/libjava/classpath/gnu/java/awt/color/GrayProfileConverter.java b/libjava/classpath/gnu/java/awt/color/GrayProfileConverter.java
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+/* GrayProfileConverter.java -- Gray profile conversion class
+   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., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 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;
+import java.awt.color.ICC_ProfileGray;
+import java.awt.color.ProfileDataException;
+
+/**
+ * GrayProfileConverter - converts Grayscale profiles (ICC_ProfileGray)
+ *
+ * This type of profile contains a single tone reproduction curve (TRC).
+ * Conversion consists of simple TRC lookup.
+ *
+ * This implementation is very lazy and does everything applying the TRC and
+ * utilizing the built-in linear grayscale color space.
+ *
+ * @author Sven de Marothy
+ */
+public class GrayProfileConverter implements ColorSpaceConverter
+{
+  private GrayScaleConverter gc;
+  private ToneReproductionCurve trc;
+  private ColorLookUpTable toPCS;
+  private ColorLookUpTable fromPCS;
+
+  /**
+   * Constructs the converter described by an ICC_ProfileGray object
+   */
+  public GrayProfileConverter(ICC_ProfileGray profile)
+  {
+    try
+      {
+        trc = new ToneReproductionCurve(profile.getGamma());
+      }
+    catch (ProfileDataException e)
+      {
+        trc = new ToneReproductionCurve(profile.getTRC());
+      }
+
+    // linear grayscale converter
+    gc = new GrayScaleConverter();
+
+    // If a CLUT is available, it should be used, and the TRCs ignored.
+    // Note: A valid profile may only have CLUTs in one direction, and
+    // TRC:s without useful info, making reverse-transforms impossible.
+    // In this case the TRC will be used for the reverse-transform with
+    // unpredictable results. This is in line with the Java specification,
+    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;
+      }
+  }
+
+  public float[] toCIEXYZ(float[] in)
+  {
+    if (toPCS != null)
+      return toPCS.lookup(in);
+    float[] gray = new float[1];
+    gray[0] = trc.lookup(in[0]);
+    return gc.toCIEXYZ(gray);
+  }
+
+  public float[] toRGB(float[] in)
+  {
+    float[] gray = new float[1];
+    gray[0] = trc.lookup(in[0]);
+    return gc.toRGB(gray);
+  }
+
+  public float[] fromRGB(float[] in)
+  {
+    // get linear grayscale value
+    float[] gray = gc.fromRGB(in);
+    gray[0] = trc.reverseLookup(gray[0]);
+    return gray;
+  }
+
+  public float[] fromCIEXYZ(float[] in)
+  {
+    if (fromPCS != null)
+      return fromPCS.lookup(in);
+
+    float[] gray = gc.fromCIEXYZ(in);
+    gray[0] = trc.reverseLookup(gray[0]);
+    return gray;
+  }
+}