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1 files changed, 1249 insertions, 0 deletions

diff --git a/libjava/classpath/java/awt/color/ICC_Profile.java b/libjava/classpath/java/awt/color/ICC_Profile.java
new file mode 100644
index 000000000..0eef22e49
--- /dev/null
+++ b/libjava/classpath/java/awt/color/ICC_Profile.java
@@ -0,0 +1,1249 @@
+/* ICC_Profile.java -- color space profiling
+   Copyright (C) 2000, 2002, 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 java.awt.color;
+
+import gnu.java.awt.color.ProfileHeader;
+import gnu.java.awt.color.TagEntry;
+
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
+import java.io.ObjectStreamException;
+import java.io.OutputStream;
+import java.io.Serializable;
+import java.io.UnsupportedEncodingException;
+import java.nio.ByteBuffer;
+import java.util.Enumeration;
+import java.util.Hashtable;
+
+/**
+ * ICC Profile - represents an ICC Color profile.
+ * The ICC profile format is a standard file format which maps the transform
+ * from a device color space to a standard Profile Color Space (PCS), which
+ * can either be CIE L*a*b or CIE XYZ.
+ * (With the exception of device link profiles which map from one device space
+ * to another)
+ *
+ * ICC profiles calibrated to specific input/output devices are used when color
+ * fidelity is of importance.
+ *
+ * An instance of ICC_Profile can be created using the getInstance() methods,
+ * either using one of the predefined color spaces enumerated in ColorSpace,
+ * or from an ICC profile file, or from an input stream.
+ *
+ * An ICC_ColorSpace object can then be created to transform color values
+ * through the profile.
+ *
+ * The ICC_Profile class implements the version 2 format specified by
+ * International Color Consortium Specification ICC.1:1998-09,
+ * and its addendum ICC.1A:1999-04, April 1999
+ * (available at www.color.org)
+ *
+ * @author Sven de Marothy
+ * @author Rolf W. Rasmussen (rolfwr@ii.uib.no)
+ * @since 1.2
+ */
+public class ICC_Profile implements Serializable
+{
+  /**
+   * Compatible with JDK 1.2+.
+   */
+  private static final long serialVersionUID = -3938515861990936766L;
+
+  /**
+   * ICC Profile classes
+   */
+  public static final int CLASS_INPUT = 0;
+  public static final int CLASS_DISPLAY = 1;
+  public static final int CLASS_OUTPUT = 2;
+  public static final int CLASS_DEVICELINK = 3;
+  public static final int CLASS_COLORSPACECONVERSION = 4;
+  public static final int CLASS_ABSTRACT = 5;
+  public static final int CLASS_NAMEDCOLOR = 6;
+
+  /**
+   * ICC Profile class signatures
+   */
+  public static final int icSigInputClass = 0x73636e72; // 'scnr'
+  public static final int icSigDisplayClass = 0x6d6e7472; // 'mntr'
+  public static final int icSigOutputClass = 0x70727472; // 'prtr'
+  public static final int icSigLinkClass = 0x6c696e6b; // 'link'
+  public static final int icSigColorSpaceClass = 0x73706163; // 'spac'
+  public static final int icSigAbstractClass = 0x61627374; // 'abst'
+  public static final int icSigNamedColorClass = 0x6e6d636c; // 'nmcl'
+
+  /**
+   * Color space signatures
+   */
+  public static final int icSigXYZData = 0x58595A20; // 'XYZ '
+  public static final int icSigLabData = 0x4C616220; // 'Lab '
+  public static final int icSigLuvData = 0x4C757620; // 'Luv '
+  public static final int icSigYCbCrData = 0x59436272; // 'YCbr'
+  public static final int icSigYxyData = 0x59787920; // 'Yxy '
+  public static final int icSigRgbData = 0x52474220; // 'RGB '
+  public static final int icSigGrayData = 0x47524159; // 'GRAY'
+  public static final int icSigHsvData = 0x48535620; // 'HSV '
+  public static final int icSigHlsData = 0x484C5320; // 'HLS '
+  public static final int icSigCmykData = 0x434D594B; // 'CMYK'
+  public static final int icSigCmyData = 0x434D5920; // 'CMY '
+  public static final int icSigSpace2CLR = 0x32434C52; // '2CLR'
+  public static final int icSigSpace3CLR = 0x33434C52; // '3CLR'
+  public static final int icSigSpace4CLR = 0x34434C52; // '4CLR'
+  public static final int icSigSpace5CLR = 0x35434C52; // '5CLR'
+  public static final int icSigSpace6CLR = 0x36434C52; // '6CLR'
+  public static final int icSigSpace7CLR = 0x37434C52; // '7CLR'
+  public static final int icSigSpace8CLR = 0x38434C52; // '8CLR'
+  public static final int icSigSpace9CLR = 0x39434C52; // '9CLR'
+  public static final int icSigSpaceACLR = 0x41434C52; // 'ACLR'
+  public static final int icSigSpaceBCLR = 0x42434C52; // 'BCLR'
+  public static final int icSigSpaceCCLR = 0x43434C52; // 'CCLR'
+  public static final int icSigSpaceDCLR = 0x44434C52; // 'DCLR'
+  public static final int icSigSpaceECLR = 0x45434C52; // 'ECLR'
+  public static final int icSigSpaceFCLR = 0x46434C52; // 'FCLR'
+
+  /**
+   * Rendering intents
+   */
+  public static final int icPerceptual = 0;
+  public static final int icRelativeColorimetric = 1;
+  public static final int icSaturation = 2;
+  public static final int icAbsoluteColorimetric = 3;
+
+  /**
+   * Tag signatures
+   */
+  public static final int icSigAToB0Tag = 0x41324230; // 'A2B0'
+  public static final int icSigAToB1Tag = 0x41324231; // 'A2B1'
+  public static final int icSigAToB2Tag = 0x41324232; // 'A2B2'
+  public static final int icSigBlueColorantTag = 0x6258595A; // 'bXYZ'
+  public static final int icSigBlueTRCTag = 0x62545243; // 'bTRC'
+  public static final int icSigBToA0Tag = 0x42324130; // 'B2A0'
+  public static final int icSigBToA1Tag = 0x42324131; // 'B2A1'
+  public static final int icSigBToA2Tag = 0x42324132; // 'B2A2'
+  public static final int icSigCalibrationDateTimeTag = 0x63616C74; // 'calt'
+  public static final int icSigCharTargetTag = 0x74617267; // 'targ'
+  public static final int icSigCopyrightTag = 0x63707274; // 'cprt'
+  public static final int icSigCrdInfoTag = 0x63726469; // 'crdi'
+  public static final int icSigDeviceMfgDescTag = 0x646D6E64; // 'dmnd'
+  public static final int icSigDeviceModelDescTag = 0x646D6464; // 'dmdd'
+  public static final int icSigDeviceSettingsTag = 0x64657673; // 'devs'
+  public static final int icSigGamutTag = 0x67616D74; // 'gamt'
+  public static final int icSigGrayTRCTag = 0x6b545243; // 'kTRC'
+  public static final int icSigGreenColorantTag = 0x6758595A; // 'gXYZ'
+  public static final int icSigGreenTRCTag = 0x67545243; // 'gTRC'
+  public static final int icSigLuminanceTag = 0x6C756d69; // 'lumi'
+  public static final int icSigMeasurementTag = 0x6D656173; // 'meas'
+  public static final int icSigMediaBlackPointTag = 0x626B7074; // 'bkpt'
+  public static final int icSigMediaWhitePointTag = 0x77747074; // 'wtpt'
+  public static final int icSigNamedColor2Tag = 0x6E636C32; // 'ncl2'
+  public static final int icSigOutputResponseTag = 0x72657370; // 'resp'
+  public static final int icSigPreview0Tag = 0x70726530; // 'pre0'
+  public static final int icSigPreview1Tag = 0x70726531; // 'pre1'
+  public static final int icSigPreview2Tag = 0x70726532; // 'pre2'
+  public static final int icSigProfileDescriptionTag = 0x64657363; // 'desc'
+  public static final int icSigProfileSequenceDescTag = 0x70736571; // 'pseq'
+  public static final int icSigPs2CRD0Tag = 0x70736430; // 'psd0'
+  public static final int icSigPs2CRD1Tag = 0x70736431; // 'psd1'
+  public static final int icSigPs2CRD2Tag = 0x70736432; // 'psd2'
+  public static final int icSigPs2CRD3Tag = 0x70736433; // 'psd3'
+  public static final int icSigPs2CSATag = 0x70733273; // 'ps2s'
+  public static final int icSigPs2RenderingIntentTag = 0x70733269; // 'ps2i'
+  public static final int icSigRedColorantTag = 0x7258595A; // 'rXYZ'
+  public static final int icSigRedTRCTag = 0x72545243; // 'rTRC'
+  public static final int icSigScreeningDescTag = 0x73637264; // 'scrd'
+  public static final int icSigScreeningTag = 0x7363726E; // 'scrn'
+  public static final int icSigTechnologyTag = 0x74656368; // 'tech'
+  public static final int icSigUcrBgTag = 0x62666420; // 'bfd '
+  public static final int icSigViewingCondDescTag = 0x76756564; // 'vued'
+  public static final int icSigViewingConditionsTag = 0x76696577; // 'view'
+  public static final int icSigChromaticityTag = 0x6368726D; // 'chrm'
+
+  /**
+   * Non-ICC tag 'head' for use in retrieving the header with getData()
+   */
+  public static final int icSigHead = 0x68656164;
+
+  /**
+   * Header offsets
+   */
+  public static final int icHdrSize = 0;
+  public static final int icHdrCmmId = 4;
+  public static final int icHdrVersion = 8;
+  public static final int icHdrDeviceClass = 12;
+  public static final int icHdrColorSpace = 16;
+  public static final int icHdrPcs = 20;
+  public static final int icHdrDate = 24;
+  public static final int icHdrMagic = 36;
+  public static final int icHdrPlatform = 40;
+  public static final int icHdrFlags = 44;
+  public static final int icHdrManufacturer = 48;
+  public static final int icHdrModel = 52;
+  public static final int icHdrAttributes = 56;
+  public static final int icHdrRenderingIntent = 64;
+  public static final int icHdrIlluminant = 68;
+  public static final int icHdrCreator = 80;
+
+  /**
+   *
+   */
+  public static final int icTagType = 0;
+  public static final int icTagReserved = 4;
+  public static final int icCurveCount = 8;
+  public static final int icCurveData = 12;
+  public static final int icXYZNumberX = 8;
+
+  /**
+   * offset of the Tag table
+   */
+  private static final int tagTableOffset = 128;
+
+  /**
+   * @serial
+   */
+  private static final int iccProfileSerializedDataVersion = 1;
+
+  /**
+   * Constants related to generating profiles for
+   * built-in colorspace profiles
+   */
+  /**
+   * Copyright notice to stick into built-in-profile files.
+   */
+  private static final String copyrightNotice = "Generated by GNU Classpath.";
+
+  /**
+   * Resolution of the TRC to use for predefined profiles.
+   * 1024 should suffice.
+   */
+  private static final int TRC_POINTS = 1024;
+
+  /**
+   * CIE 1931 D50 white point (in Lab coordinates)
+   */
+  private static final float[] D50 = { 0.96422f, 1.00f, 0.82521f };
+
+  /**
+   * Color space profile ID
+   * Set to the predefined profile class (e.g. CS_sRGB) if a predefined
+   * color space is used, set to -1 otherwise.
+   * (or if the profile has been modified)
+   */
+  private transient int profileID;
+
+  /**
+   * The profile header data
+   */
+  private transient ProfileHeader header;
+
+  /**
+   * A hashtable containing the profile tags as TagEntry objects
+   */
+  private transient Hashtable tagTable;
+
+  /**
+   * Contructor for predefined colorspaces
+   */
+  ICC_Profile(int profileID)
+  {
+    header = null;
+    tagTable = null;
+    createProfile(profileID);
+  }
+
+  /**
+   * Constructs an ICC_Profile from a header and a table of loaded tags.
+   */
+  ICC_Profile(ProfileHeader h, Hashtable tags) throws IllegalArgumentException
+  {
+    header = h;
+    tagTable = tags;
+    profileID = -1; // Not a predefined color space
+  }
+
+  /**
+   * Constructs an ICC_Profile from a byte array of data.
+   */
+  ICC_Profile(byte[] data) throws IllegalArgumentException
+  {
+    // get header and verify it
+    header = new ProfileHeader(data);
+    header.verifyHeader(data.length);
+    tagTable = createTagTable(data);
+    profileID = -1; // Not a predefined color space
+  }
+
+  /**
+   * Free up the used memory.
+   */
+  protected void finalize()
+  {
+  }
+
+  /**
+   * Returns an ICC_Profile instance from a byte array of profile data.
+   *
+   * An instance of the specialized classes ICC_ProfileRGB or ICC_ProfileGray
+   * may be returned if appropriate.
+   *
+   * @param data - the profile data
+   * @return An ICC_Profile object
+   *
+   * @throws IllegalArgumentException if the profile data is an invalid
+   * v2 profile.
+   */
+  public static ICC_Profile getInstance(byte[] data)
+  {
+    ProfileHeader header = new ProfileHeader(data);
+
+    // verify it as a correct ICC header, including size
+    header.verifyHeader(data.length);
+
+    Hashtable tags = createTagTable(data);
+
+    if (isRGBProfile(header, tags))
+      return new ICC_ProfileRGB(data);
+    if (isGrayProfile(header, tags))
+      return new ICC_ProfileGray(data);
+
+    return new ICC_Profile(header, tags);
+  }
+
+  /**
+   * Returns an predefined ICC_Profile instance.
+   *
+   * This will construct an ICC_Profile instance from one of the predefined
+   * color spaces in the ColorSpace class. (e.g. CS_sRGB, CS_GRAY, etc)
+   *
+   * An instance of the specialized classes ICC_ProfileRGB or ICC_ProfileGray
+   * may be returned if appropriate.
+   *
+   * @return An ICC_Profile object
+   */
+  public static ICC_Profile getInstance(int cspace)
+  {
+    if (cspace == ColorSpace.CS_sRGB || cspace == ColorSpace.CS_LINEAR_RGB)
+      return new ICC_ProfileRGB(cspace);
+    if (cspace == ColorSpace.CS_GRAY)
+      return new ICC_ProfileGray(cspace);
+    return new ICC_Profile(cspace);
+  }
+
+  /**
+   * Returns an ICC_Profile instance from an ICC Profile file.
+   *
+   * An instance of the specialized classes ICC_ProfileRGB or ICC_ProfileGray
+   * may be returned if appropriate.
+   *
+   * @param filename - the file name of the profile file.
+   * @return An ICC_Profile object
+   *
+   * @throws IllegalArgumentException if the profile data is an invalid
+   * v2 profile.
+   * @throws IOException if the file could not be read.
+   */
+  public static ICC_Profile getInstance(String filename)
+                                 throws IOException
+  {
+    return getInstance(new FileInputStream(filename));
+  }
+
+  /**
+   * Returns an ICC_Profile instance from an InputStream.
+   *
+   * This method can be used for reading ICC profiles embedded in files
+   * which support this. (JPEG and SVG for instance).
+   *
+   * The stream is treated in the following way: The profile header
+   * (128 bytes) is read first, and the header is validated. If the profile
+   * header is valid, it will then attempt to read the rest of the profile
+   * from the stream. The stream is not closed after reading.
+   *
+   * An instance of the specialized classes ICC_ProfileRGB or ICC_ProfileGray
+   * may be returned if appropriate.
+   *
+   * @param in - the input stream to read the profile from.
+   * @return An ICC_Profile object
+   *
+   * @throws IllegalArgumentException if the profile data is an invalid
+   * v2 profile.
+   * @throws IOException if the stream could not be read.
+   */
+  public static ICC_Profile getInstance(InputStream in)
+                                 throws IOException
+  {
+    // read the header
+    byte[] headerData = new byte[ProfileHeader.HEADERSIZE];
+    if (in.read(headerData) != ProfileHeader.HEADERSIZE)
+      throw new IllegalArgumentException("Invalid profile header");
+
+    ProfileHeader header = new ProfileHeader(headerData);
+
+    // verify it as a correct ICC header, but do not verify the
+    // size as we are reading from a stream.
+    header.verifyHeader(-1);
+
+    // get the size
+    byte[] data = new byte[header.getSize()];
+    System.arraycopy(headerData, 0, data, 0, ProfileHeader.HEADERSIZE);
+
+    // read the rest
+    int totalBytes = header.getSize() - ProfileHeader.HEADERSIZE;
+    int bytesLeft = totalBytes;
+    while (bytesLeft > 0)
+      {
+        int read = in.read(data,
+                           ProfileHeader.HEADERSIZE + (totalBytes - bytesLeft),
+                           bytesLeft);
+        bytesLeft -= read;
+      }
+
+    return getInstance(data);
+  }
+
+  /**
+   * Returns the major version number
+   */
+  public int getMajorVersion()
+  {
+    return header.getMajorVersion();
+  }
+
+  /**
+   * Returns the minor version number.
+   *
+   * Only the least-significant byte contains data, in BCD form:
+   * the least-significant nibble is the BCD bug fix revision,
+   * the most-significant nibble is the BCD minor revision number.
+   *
+   * (E.g. For a v2.1.0 profile this will return <code>0x10</code>)
+   */
+  public int getMinorVersion()
+  {
+    return header.getMinorVersion();
+  }
+
+  /**
+   * Returns the device class of this profile,
+   *
+   * (E.g. CLASS_INPUT for a scanner profile,
+   * CLASS_OUTPUT for a printer)
+   */
+  public int getProfileClass()
+  {
+    return header.getProfileClass();
+  }
+
+  /**
+   * Returns the color space of this profile, in terms
+   * of the color space constants defined in ColorSpace.
+   * (For example, it may be a ColorSpace.TYPE_RGB)
+   */
+  public int getColorSpaceType()
+  {
+    return header.getColorSpace();
+  }
+
+  /**
+   * Returns the color space of this profile's Profile Connection Space (OCS)
+   *
+   * In terms of the color space constants defined in ColorSpace.
+   * This may be TYPE_XYZ or TYPE_Lab
+   */
+  public int getPCSType()
+  {
+    return header.getProfileColorSpace();
+  }
+
+  /**
+   * Writes the profile data to an ICC profile file.
+   * @param filename - The name of the file to write
+   * @throws IOException if the write failed.
+   */
+  public void write(String filename) throws IOException
+  {
+    FileOutputStream out = new FileOutputStream(filename);
+    write(out);
+    out.flush();
+    out.close();
+  }
+
+  /**
+   * Writes the profile data in ICC profile file-format to a stream.
+   * This is useful for embedding ICC profiles in file formats which
+   * support this (such as JPEG and SVG).
+   *
+   * The stream is not closed after writing.
+   * @param out - The outputstream to which the profile data should be written
+   * @throws IOException if the write failed.
+   */
+  public void write(OutputStream out) throws IOException
+  {
+    out.write(getData());
+  }
+
+  /**
+   * Returns the data corresponding to this ICC_Profile as a byte array.
+   *
+   * @return The data in a byte array,
+   * where the first element corresponds to first byte of the profile file.
+   */
+  public byte[] getData()
+  {
+    int size = getSize();
+    byte[] data = new byte[size];
+
+    // Header
+    System.arraycopy(header.getData(size), 0, data, 0, ProfileHeader.HEADERSIZE);
+    // # of tags
+    byte[] tt = getTagTable();
+    System.arraycopy(tt, 0, data, ProfileHeader.HEADERSIZE, tt.length);
+
+    Enumeration e = tagTable.elements();
+    while (e.hasMoreElements())
+      {
+        TagEntry tag = (TagEntry) e.nextElement();
+        System.arraycopy(tag.getData(), 0,
+                         data, tag.getOffset(), tag.getSize());
+      }
+    return data;
+  }
+
+  /**
+   * Returns the ICC profile tag data
+   * The non ICC-tag icSigHead is also permitted to request the header data.
+   *
+   * @param tagSignature The ICC signature of the requested tag
+   * @return A byte array containing the tag data
+   */
+  public byte[] getData(int tagSignature)
+  {
+    if (tagSignature == icSigHead)
+      return header.getData(getSize());
+
+    TagEntry t = (TagEntry) tagTable.get(TagEntry.tagHashKey(tagSignature));
+    if (t == null)
+      return null;
+    return t.getData();
+  }
+
+  /**
+   * Sets the ICC profile tag data.
+   *
+   * Note that an ICC profile can only contain one tag of each type, if
+   * a tag already exists with the given signature, it is replaced.
+   *
+   * @param tagSignature - The signature of the tag to set
+   * @param data - A byte array containing the tag data
+   */
+  public void setData(int tagSignature, byte[] data)
+  {
+    profileID = -1; // Not a predefined color space if modified.
+
+    if (tagSignature == icSigHead)
+      header = new ProfileHeader(data);
+    else
+      {
+        TagEntry t = new TagEntry(tagSignature, data);
+        tagTable.put(t.hashKey(), t);
+      }
+  }
+
+  /**
+   * Get the number of components in the profile's device color space.
+   */
+  public int getNumComponents()
+  {
+    int[] lookup =
+                   {
+                     ColorSpace.TYPE_RGB, 3, ColorSpace.TYPE_CMY, 3,
+                     ColorSpace.TYPE_CMYK, 4, ColorSpace.TYPE_GRAY, 1,
+                     ColorSpace.TYPE_YCbCr, 3, ColorSpace.TYPE_XYZ, 3,
+                     ColorSpace.TYPE_Lab, 3, ColorSpace.TYPE_HSV, 3,
+                     ColorSpace.TYPE_2CLR, 2, ColorSpace.TYPE_Luv, 3,
+                     ColorSpace.TYPE_Yxy, 3, ColorSpace.TYPE_HLS, 3,
+                     ColorSpace.TYPE_3CLR, 3, ColorSpace.TYPE_4CLR, 4,
+                     ColorSpace.TYPE_5CLR, 5, ColorSpace.TYPE_6CLR, 6,
+                     ColorSpace.TYPE_7CLR, 7, ColorSpace.TYPE_8CLR, 8,
+                     ColorSpace.TYPE_9CLR, 9, ColorSpace.TYPE_ACLR, 10,
+                     ColorSpace.TYPE_BCLR, 11, ColorSpace.TYPE_CCLR, 12,
+                     ColorSpace.TYPE_DCLR, 13, ColorSpace.TYPE_ECLR, 14,
+                     ColorSpace.TYPE_FCLR, 15
+                   };
+    for (int i = 0; i < lookup.length; i += 2)
+      if (header.getColorSpace() == lookup[i])
+        return lookup[i + 1];
+    return 3; // should never happen.
+  }
+
+  /**
+   * After deserializing we must determine if the class we want
+   * is really one of the more specialized ICC_ProfileRGB or
+   * ICC_ProfileGray classes.
+   */
+  protected Object readResolve() throws ObjectStreamException
+  {
+    if (isRGBProfile(header, tagTable))
+      return new ICC_ProfileRGB(getData());
+    if (isGrayProfile(header, tagTable))
+      return new ICC_ProfileGray(getData());
+    return this;
+  }
+
+  /**
+   * Deserializes an instance
+   */
+  private void readObject(ObjectInputStream s)
+                   throws IOException, ClassNotFoundException
+  {
+    s.defaultReadObject();
+    String predef = (String) s.readObject();
+    byte[] data = (byte[]) s.readObject();
+
+    if (data != null)
+      {
+        header = new ProfileHeader(data);
+        tagTable = createTagTable(data);
+        profileID = -1; // Not a predefined color space
+      }
+
+    if (predef != null)
+      {
+        predef = predef.intern();
+        if (predef.equals("CS_sRGB"))
+          createProfile(ColorSpace.CS_sRGB);
+        if (predef.equals("CS_LINEAR_RGB"))
+          createProfile(ColorSpace.CS_LINEAR_RGB);
+        if (predef.equals("CS_CIEXYZ"))
+          createProfile(ColorSpace.CS_CIEXYZ);
+        if (predef.equals("CS_GRAY"))
+          createProfile(ColorSpace.CS_GRAY);
+        if (predef.equals("CS_PYCC"))
+          createProfile(ColorSpace.CS_PYCC);
+      }
+  }
+
+  /**
+   * Serializes an instance
+   * The format is a String and a byte array,
+   * The string is non-null if the instance is one of the built-in profiles.
+   * Otherwise the byte array is non-null and represents the profile data.
+   */
+  private void writeObject(ObjectOutputStream s) throws IOException
+  {
+    s.defaultWriteObject();
+    if (profileID == ColorSpace.CS_sRGB)
+      s.writeObject("CS_sRGB");
+    else if (profileID == ColorSpace.CS_LINEAR_RGB)
+      s.writeObject("CS_LINEAR_RGB");
+    else if (profileID == ColorSpace.CS_CIEXYZ)
+      s.writeObject("CS_CIEXYZ");
+    else if (profileID == ColorSpace.CS_GRAY)
+      s.writeObject("CS_GRAY");
+    else if (profileID == ColorSpace.CS_PYCC)
+      s.writeObject("CS_PYCC");
+    else
+      {
+        s.writeObject(null); // null string
+        s.writeObject(getData()); // data
+        return;
+      }
+    s.writeObject(null); // null data
+  }
+
+  /**
+   * Sorts a ICC profile byte array into TagEntry objects stored in
+   * a hash table.
+   */
+  private static Hashtable createTagTable(byte[] data)
+                                   throws IllegalArgumentException
+  {
+    ByteBuffer buf = ByteBuffer.wrap(data);
+    int nTags = buf.getInt(tagTableOffset);
+
+    Hashtable tagTable = new Hashtable();
+    for (int i = 0; i < nTags; i++)
+      {
+        TagEntry te = new TagEntry(buf.getInt(tagTableOffset
+                                              + i * TagEntry.entrySize + 4),
+                                   buf.getInt(tagTableOffset
+                                              + i * TagEntry.entrySize + 8),
+                                   buf.getInt(tagTableOffset
+                                              + i * TagEntry.entrySize + 12),
+                                   data);
+
+        if (tagTable.put(te.hashKey(), te) != null)
+          throw new IllegalArgumentException("Duplicate tag in profile:" + te);
+      }
+    return tagTable;
+  }
+
+  /**
+   * Returns the total size of the padded, stored data
+   * Note: Tags must be stored on 4-byte aligned offsets.
+   */
+  private int getSize()
+  {
+    int totalSize = ProfileHeader.HEADERSIZE; // size of header
+
+    int tagTableSize = 4 + tagTable.size() * TagEntry.entrySize; // size of tag table
+    if ((tagTableSize & 0x0003) != 0)
+      tagTableSize += 4 - (tagTableSize & 0x0003); // pad
+    totalSize += tagTableSize;
+
+    Enumeration e = tagTable.elements();
+    while (e.hasMoreElements())
+      { // tag data
+        int tagSize = ((TagEntry) e.nextElement()).getSize();
+        if ((tagSize & 0x0003) != 0)
+          tagSize += 4 - (tagSize & 0x0003); // pad
+        totalSize += tagSize;
+      }
+    return totalSize;
+  }
+
+  /**
+   * Generates the tag index table
+   */
+  private byte[] getTagTable()
+  {
+    int tagTableSize = 4 + tagTable.size() * TagEntry.entrySize;
+    if ((tagTableSize & 0x0003) != 0)
+      tagTableSize += 4 - (tagTableSize & 0x0003); // pad
+
+    int offset = 4;
+    int tagOffset = ProfileHeader.HEADERSIZE + tagTableSize;
+    ByteBuffer buf = ByteBuffer.allocate(tagTableSize);
+    buf.putInt(tagTable.size()); // number of tags
+
+    Enumeration e = tagTable.elements();
+    while (e.hasMoreElements())
+      {
+        TagEntry tag = (TagEntry) e.nextElement();
+        buf.putInt(offset, tag.getSignature());
+        buf.putInt(offset + 4, tagOffset);
+        buf.putInt(offset + 8, tag.getSize());
+        tag.setOffset(tagOffset);
+        int tagSize = tag.getSize();
+        if ((tagSize & 0x0003) != 0)
+          tagSize += 4 - (tagSize & 0x0003); // pad
+        tagOffset += tagSize;
+        offset += 12;
+      }
+    return buf.array();
+  }
+
+  /**
+   * Returns if the criteria for an ICC_ProfileRGB are met.
+   * This means:
+   * Color space is TYPE_RGB
+   * (r,g,b)ColorantTags included
+   * (r,g,b)TRCTags included
+   * mediaWhitePointTag included
+   */
+  private static boolean isRGBProfile(ProfileHeader header, Hashtable tags)
+  {
+    if (header.getColorSpace() != ColorSpace.TYPE_RGB)
+      return false;
+    if (tags.get(TagEntry.tagHashKey(icSigRedColorantTag)) == null)
+      return false;
+    if (tags.get(TagEntry.tagHashKey(icSigGreenColorantTag)) == null)
+      return false;
+    if (tags.get(TagEntry.tagHashKey(icSigBlueColorantTag)) == null)
+      return false;
+    if (tags.get(TagEntry.tagHashKey(icSigRedTRCTag)) == null)
+      return false;
+    if (tags.get(TagEntry.tagHashKey(icSigGreenTRCTag)) == null)
+      return false;
+    if (tags.get(TagEntry.tagHashKey(icSigBlueTRCTag)) == null)
+      return false;
+    return (tags.get(TagEntry.tagHashKey(icSigMediaWhitePointTag)) != null);
+  }
+
+  /**
+   * Returns if the criteria for an ICC_ProfileGray are met.
+   * This means:
+   * Colorspace is TYPE_GRAY
+   * grayTRCTag included
+   * mediaWhitePointTag included
+   */
+  private static boolean isGrayProfile(ProfileHeader header, Hashtable tags)
+  {
+    if (header.getColorSpace() != ColorSpace.TYPE_GRAY)
+      return false;
+    if (tags.get(TagEntry.tagHashKey(icSigGrayTRCTag)) == null)
+      return false;
+    return (tags.get(TagEntry.tagHashKey(icSigMediaWhitePointTag)) != null);
+  }
+
+  /**
+   * Returns curve data for a 'curv'-type tag
+   * If it's a gamma curve, a single entry will be returned with the
+   * gamma value (including 1.0 for linear response)
+   * Otherwise the TRC table is returned.
+   *
+   * (Package private - used by ICC_ProfileRGB and ICC_ProfileGray)
+   */
+  short[] getCurve(int signature)
+  {
+    byte[] data = getData(signature);
+    short[] curve;
+
+    // can't find tag?
+    if (data == null)
+      return null;
+
+    // not an curve type tag?
+    ByteBuffer buf = ByteBuffer.wrap(data);
+    if (buf.getInt(0) != 0x63757276) // 'curv' type
+      return null;
+    int count = buf.getInt(8);
+    if (count == 0)
+      {
+        curve = new short[1];
+        curve[0] = 0x0100; // 1.00 in u8fixed8
+        return curve;
+      }
+    if (count == 1)
+      {
+        curve = new short[1];
+        curve[0] = buf.getShort(12); // other u8fixed8 gamma
+        return curve;
+      }
+    curve = new short[count];
+    for (int i = 0; i < count; i++)
+      curve[i] = buf.getShort(12 + i * 2);
+    return curve;
+  }
+
+  /**
+   * Returns XYZ tristimulus values for an 'XYZ ' type tag
+   * @return the XYZ values, or null if the tag was not an 'XYZ ' type tag.
+   *
+   * (Package private - used by ICC_ProfileXYZ and ICC_ProfileGray)
+   */
+  float[] getXYZData(int signature)
+  {
+    byte[] data = getData(signature);
+
+    // can't find tag?
+    if (data == null)
+      return null;
+
+    // not an XYZData type tag?
+    ByteBuffer buf = ByteBuffer.wrap(data);
+    if (buf.getInt(0) != icSigXYZData) // 'XYZ ' type
+      return null;
+
+    float[] point = new float[3];
+
+    // get the X,Y,Z tristimulus values
+    point[0] = ((float) buf.getInt(8)) / 65536f;
+    point[1] = ((float) buf.getInt(12)) / 65536f;
+    point[2] = ((float) buf.getInt(16)) / 65536f;
+    return point;
+  }
+
+  /**
+   * Returns the profile ID if it's a predefined profile
+   * Or -1 for a profile loaded from an ICC profile
+   *
+   * (Package private - used by ICC_ColorSpace)
+   */
+  int isPredefined()
+  {
+    return profileID;
+  }
+
+  /**
+   * Creates a tag of XYZ-value type.
+   */
+  private byte[] makeXYZData(float[] values)
+  {
+    ByteBuffer buf = ByteBuffer.allocate(20);
+    buf.putInt(0, icSigXYZData); // 'XYZ '
+    buf.putInt(4, 0);
+    buf.putInt(8, (int) (values[0] * 65536.0));
+    buf.putInt(12, (int) (values[1] * 65536.0));
+    buf.putInt(16, (int) (values[2] * 65536.0));
+    return buf.array();
+  }
+
+  /**
+   * Creates a tag of text type
+   */
+  private byte[] makeTextTag(String text)
+  {
+    int length = text.length();
+    ByteBuffer buf = ByteBuffer.allocate(8 + length + 1);
+    byte[] data;
+    try
+      {
+        data = text.getBytes("US-ASCII");
+      }
+    catch (UnsupportedEncodingException e)
+      {
+        data = new byte[length]; // shouldn't happen
+      }
+
+    buf.putInt(0, (int) 0x74657874); // 'text'
+    buf.putInt(4, 0);
+    for (int i = 0; i < length; i++)
+      buf.put(8 + i, data[i]);
+    buf.put(8 + length, (byte) 0); // null-terminate
+    return buf.array();
+  }
+
+  /**
+   * Creates a tag of textDescriptionType
+   */
+  private byte[] makeDescTag(String text)
+  {
+    int length = text.length();
+    ByteBuffer buf = ByteBuffer.allocate(90 + length + 1);
+    buf.putInt(0, (int) 0x64657363); // 'desc'
+    buf.putInt(4, 0); // reserved
+    buf.putInt(8, length + 1); // ASCII length, including null termination
+    byte[] data;
+
+    try
+      {
+        data = text.getBytes("US-ASCII");
+      }
+    catch (UnsupportedEncodingException e)
+      {
+        data = new byte[length]; // shouldn't happen
+      }
+
+    for (int i = 0; i < length; i++)
+      buf.put(12 + i, data[i]);
+    buf.put(12 + length, (byte) 0); // null-terminate
+
+    for (int i = 0; i < 39; i++)
+      buf.putShort(13 + length + (i * 2), (short) 0); // 78 bytes we can ignore
+
+    return buf.array();
+  }
+
+  /**
+   * Creates a tag of TRC type (linear curve)
+   */
+  private byte[] makeTRC()
+  {
+    ByteBuffer buf = ByteBuffer.allocate(12);
+    buf.putInt(0, 0x63757276); // 'curv' type
+    buf.putInt(4, 0); // reserved
+    buf.putInt(8, 0);
+    return buf.array();
+  }
+
+  /**
+   * Creates a tag of TRC type (single gamma value)
+   */
+  private byte[] makeTRC(float gamma)
+  {
+    short gammaValue = (short) (gamma * 256f);
+    ByteBuffer buf = ByteBuffer.allocate(14);
+    buf.putInt(0, 0x63757276); // 'curv' type
+    buf.putInt(4, 0); // reserved
+    buf.putInt(8, 1);
+    buf.putShort(12, gammaValue); // 1.00 in u8fixed8
+    return buf.array();
+  }
+
+  /**
+   * Creates a tag of TRC type (TRC curve points)
+   */
+  private byte[] makeTRC(float[] trc)
+  {
+    ByteBuffer buf = ByteBuffer.allocate(12 + 2 * trc.length);
+    buf.putInt(0, 0x63757276); // 'curv' type
+    buf.putInt(4, 0); // reserved
+    buf.putInt(8, trc.length); // number of points
+
+    // put the curve values
+    for (int i = 0; i < trc.length; i++)
+      buf.putShort(12 + i * 2, (short) (trc[i] * 65535f));
+
+    return buf.array();
+  }
+
+  /**
+   * Creates an identity color lookup table.
+   */
+  private byte[] makeIdentityClut()
+  {
+    final int nIn = 3;
+    final int nOut = 3;
+    final int nInEntries = 256;
+    final int nOutEntries = 256;
+    final int gridpoints = 16;
+
+    // gridpoints**nIn
+    final int clutSize = 2 * nOut * gridpoints * gridpoints * gridpoints;
+    final int totalSize = clutSize + 2 * nInEntries * nIn
+                          + 2 * nOutEntries * nOut + 52;
+
+    ByteBuffer buf = ByteBuffer.allocate(totalSize);
+    buf.putInt(0, 0x6D667432); // 'mft2'
+    buf.putInt(4, 0); // reserved
+    buf.put(8, (byte) nIn); // number input channels
+    buf.put(9, (byte) nOut); // number output channels
+    buf.put(10, (byte) gridpoints); // number gridpoints
+    buf.put(11, (byte) 0); // padding
+
+    // identity matrix
+    buf.putInt(12, 65536); // = 1 in s15.16 fixed point
+    buf.putInt(16, 0);
+    buf.putInt(20, 0);
+    buf.putInt(24, 0);
+    buf.putInt(28, 65536);
+    buf.putInt(32, 0);
+    buf.putInt(36, 0);
+    buf.putInt(40, 0);
+    buf.putInt(44, 65536);
+
+    buf.putShort(48, (short) nInEntries); // input table entries
+    buf.putShort(50, (short) nOutEntries); // output table entries
+
+    // write the linear input channels, unsigned 16.16 fixed point,
+    // from 0.0 to FF.FF
+    for (int channel = 0; channel < 3; channel++)
+      for (int i = 0; i < nInEntries; i++)
+        {
+          short n = (short) ((i << 8) | i); // assumes 256 entries
+          buf.putShort(52 + (channel * nInEntries + i) * 2, n);
+        }
+    int clutOffset = 52 + nInEntries * nIn * 2;
+
+    for (int x = 0; x < gridpoints; x++)
+      for (int y = 0; y < gridpoints; y++)
+        for (int z = 0; z < gridpoints; z++)
+          {
+            int offset = clutOffset + z * 2 * nOut + y * gridpoints * 2 * nOut
+                         + x * gridpoints * gridpoints * 2 * nOut;
+            double xf = ((double) x) / ((double) gridpoints - 1.0);
+            double yf = ((double) y) / ((double) gridpoints - 1.0);
+            double zf = ((double) z) / ((double) gridpoints - 1.0);
+            buf.putShort(offset, (short) (xf * 65535.0));
+            buf.putShort(offset + 2, (short) (yf * 65535.0));
+            buf.putShort(offset + 4, (short) (zf * 65535.0));
+          }
+
+    for (int channel = 0; channel < 3; channel++)
+      for (int i = 0; i < nOutEntries; i++)
+        {
+          short n = (short) ((i << 8) | i); // assumes 256 entries
+          buf.putShort(clutOffset + clutSize + (channel * nOutEntries + i) * 2,
+                       n);
+        }
+
+    return buf.array();
+  }
+
+  /**
+   * Creates profile data corresponding to the built-in colorspaces.
+   */
+  private void createProfile(int colorSpace) throws IllegalArgumentException
+  {
+    this.profileID = colorSpace;
+    header = new ProfileHeader();
+    tagTable = new Hashtable();
+
+    switch (colorSpace)
+      {
+      case ColorSpace.CS_sRGB:
+        createRGBProfile();
+        return;
+      case ColorSpace.CS_LINEAR_RGB:
+        createLinearRGBProfile();
+        return;
+      case ColorSpace.CS_CIEXYZ:
+        createCIEProfile();
+        return;
+      case ColorSpace.CS_GRAY:
+        createGrayProfile();
+        return;
+      case ColorSpace.CS_PYCC:
+        createPyccProfile();
+        return;
+      default:
+        throw new IllegalArgumentException("Not a predefined color space!");
+      }
+  }
+
+  /**
+   * Creates an ICC_Profile representing the sRGB color space
+   */
+  private void createRGBProfile()
+  {
+    header.setColorSpace( ColorSpace.TYPE_RGB );
+    header.setProfileColorSpace( ColorSpace.TYPE_XYZ );
+    ICC_ColorSpace cs = new ICC_ColorSpace(this);
+
+    float[] r = { 1f, 0f, 0f };
+    float[] g = { 0f, 1f, 0f };
+    float[] b = { 0f, 0f, 1f };
+    float[] black = { 0f, 0f, 0f };
+
+    // CIE 1931 D50 white point (in Lab coordinates)
+    float[] white = D50;
+
+    // Get tristimulus values (matrix elements)
+    r = cs.toCIEXYZ(r);
+    g = cs.toCIEXYZ(g);
+    b = cs.toCIEXYZ(b);
+
+    // Generate the sRGB TRC curve, this is the linear->nonlinear
+    // RGB transform.
+    cs = new ICC_ColorSpace(getInstance(ICC_ColorSpace.CS_LINEAR_RGB));
+    float[] points = new float[TRC_POINTS];
+    float[] in = new float[3];
+    for (int i = 0; i < TRC_POINTS; i++)
+      {
+        in[0] = in[1] = in[2] = ((float) i) / ((float) TRC_POINTS - 1);
+        in = cs.fromRGB(in);
+        // Note this value is the same for all components.
+        points[i] = in[0];
+      }
+
+    setData(icSigRedColorantTag, makeXYZData(r));
+    setData(icSigGreenColorantTag, makeXYZData(g));
+    setData(icSigBlueColorantTag, makeXYZData(b));
+    setData(icSigMediaWhitePointTag, makeXYZData(white));
+    setData(icSigMediaBlackPointTag, makeXYZData(black));
+    setData(icSigRedTRCTag, makeTRC(points));
+    setData(icSigGreenTRCTag, makeTRC(points));
+    setData(icSigBlueTRCTag, makeTRC(points));
+    setData(icSigCopyrightTag, makeTextTag(copyrightNotice));
+    setData(icSigProfileDescriptionTag, makeDescTag("Generic sRGB"));
+    this.profileID = ColorSpace.CS_sRGB;
+  }
+
+  /**
+   * Creates an linear sRGB profile
+   */
+  private void createLinearRGBProfile()
+  {
+    header.setColorSpace(ColorSpace.TYPE_RGB);
+    header.setProfileColorSpace(ColorSpace.TYPE_XYZ);
+    ICC_ColorSpace cs = new ICC_ColorSpace(this);
+
+    float[] r = { 1f, 0f, 0f };
+    float[] g = { 0f, 1f, 0f };
+    float[] b = { 0f, 0f, 1f };
+    float[] black = { 0f, 0f, 0f };
+
+    float[] white = D50;
+
+    // Get tristimulus values (matrix elements)
+    r = cs.toCIEXYZ(r);
+    g = cs.toCIEXYZ(g);
+    b = cs.toCIEXYZ(b);
+
+    setData(icSigRedColorantTag, makeXYZData(r));
+    setData(icSigGreenColorantTag, makeXYZData(g));
+    setData(icSigBlueColorantTag, makeXYZData(b));
+
+    setData(icSigMediaWhitePointTag, makeXYZData(white));
+    setData(icSigMediaBlackPointTag, makeXYZData(black));
+
+    setData(icSigRedTRCTag, makeTRC());
+    setData(icSigGreenTRCTag, makeTRC());
+    setData(icSigBlueTRCTag, makeTRC());
+    setData(icSigCopyrightTag, makeTextTag(copyrightNotice));
+    setData(icSigProfileDescriptionTag, makeDescTag("Linear RGB"));
+    this.profileID = ColorSpace.CS_LINEAR_RGB;
+  }
+
+  /**
+   * Creates an CIE XYZ identity profile
+   */
+  private void createCIEProfile()
+  {
+    header.setColorSpace( ColorSpace.TYPE_XYZ );
+    header.setProfileColorSpace( ColorSpace.TYPE_XYZ );
+    header.setProfileClass( CLASS_COLORSPACECONVERSION );
+    ICC_ColorSpace cs = new ICC_ColorSpace(this);
+
+    float[] white = D50;
+
+    setData(icSigMediaWhitePointTag, makeXYZData(white));
+    setData(icSigAToB0Tag, makeIdentityClut());
+    setData(icSigBToA0Tag, makeIdentityClut());
+    setData(icSigCopyrightTag, makeTextTag(copyrightNotice));
+    setData(icSigProfileDescriptionTag, makeDescTag("CIE XYZ identity profile"));
+    this.profileID = ColorSpace.CS_CIEXYZ;
+  }
+
+  /**
+   * Creates a linear gray ICC_Profile
+   */
+  private void createGrayProfile()
+  {
+    header.setColorSpace(ColorSpace.TYPE_GRAY);
+    header.setProfileColorSpace(ColorSpace.TYPE_XYZ);
+
+    // CIE 1931 D50 white point (in Lab coordinates)
+    float[] white = D50;
+
+    setData(icSigMediaWhitePointTag, makeXYZData(white));
+    setData(icSigGrayTRCTag, makeTRC(1.0f));
+    setData(icSigCopyrightTag, makeTextTag(copyrightNotice));
+    setData(icSigProfileDescriptionTag, makeDescTag("Linear grayscale"));
+    this.profileID = ColorSpace.CS_GRAY;
+  }
+
+  /**
+   * XXX Implement me
+   */
+  private void createPyccProfile()
+  {
+    header.setColorSpace(ColorSpace.TYPE_3CLR);
+    header.setProfileColorSpace(ColorSpace.TYPE_XYZ);
+
+    // Create CLUTs here. :-)
+
+    setData(icSigCopyrightTag, makeTextTag(copyrightNotice));
+    setData(icSigProfileDescriptionTag, makeDescTag("Photo YCC"));
+    this.profileID = ColorSpace.CS_PYCC;
+  }
+} // class ICC_Profile