obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
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14 files changed, 3191 insertions, 0 deletions

diff --git a/libjava/classpath/gnu/javax/imageio/jpeg/DCT.java b/libjava/classpath/gnu/javax/imageio/jpeg/DCT.java
new file mode 100644
index 000000000..fda52e5f5
--- /dev/null
+++ b/libjava/classpath/gnu/javax/imageio/jpeg/DCT.java
@@ -0,0 +1,347 @@
+/* DCT.java --
+   Copyright (C)  2005  Free Software Foundation, Inc.
+
+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.javax.imageio.jpeg;
+
+/**
+ * Discrete Cosine Transformations.
+ */
+public class DCT
+{
+
+  /**
+   * Cosine matrix
+   */
+  public double c[][] = new double[8][8];
+
+  /**
+   * Transformed cosine matrix
+   */
+  public double cT[][] = new double[8][8];
+
+  public DCT()
+  {
+    initMatrix();
+  }
+
+  /**
+   * Figure A.3.3 IDCT, Cu Cv on A-5 of the ISO DIS 10918-1. Requirements and
+   * Guidelines.
+   *
+   * @param u
+   * @return
+   */
+  public static double C(int u)
+  {
+    return ((u == 0) ? (double) 1 / (double) Math.sqrt((double) 2)
+                     : (double) 1);
+  }
+
+  /**
+   * Initialize matrix values for the fast_idct function
+   */
+  private void initMatrix()
+  {
+    for (int j = 0; j < 8; j++)
+      {
+        double nn = (double) (8);
+        c[0][j] = 1.0 / Math.sqrt(nn);
+        cT[j][0] = c[0][j];
+      }
+    for (int i = 1; i < 8; i++)
+      {
+      for (int j = 0; j < 8; j++)
+        {
+          double jj = (double) j;
+          double ii = (double) i;
+          c[i][j] =
+            Math.sqrt(2.0 / 8.0)
+            * Math.cos(((2.0 * jj + 1.0) * ii * Math.PI) / (2.0 * 8.0));
+          cT[j][i] = c[i][j];
+        }
+      }
+  }
+
+  /**
+   * slow_idct - Figure A.3.3 IDCT (informative) on A-5 of the ISO DIS
+   * 10918-1. Requirements and Guidelines. This is a slow IDCT, there are
+   * better algorithms to use, it's fairly expensive with processor speed.
+   *
+   * @param matrix
+   * @return
+   */
+  public static double[][] slow_idct(double[][] matrix)
+  {
+    double[][] output = new double[matrix.length][matrix.length];
+    for (int y = 0; y < 8; y++)
+      {
+        for (int x = 0; x < 8; x++)
+          {
+            double val = 0;
+            for (double v = 0; v < 8; v++)
+              {
+                double innerloop = 0;
+                for (double u = 0; u < 8; u++)
+                  innerloop += (DCT.C((int) u) / (double) 2)
+                           * matrix[(int) v][(int) u]
+                           * Math.cos((2 * x + 1) * u * Math.PI / (double) 16)
+                           * Math.cos((2 * y + 1) * v * Math.PI / (double) 16);
+                val += (DCT.C((int) v) / (double) 2) * innerloop;
+              }
+            output[y][x] = (val + 128);
+          }
+      }
+    return (output);
+  }
+
+  public static float[][] slow_fdct(float[][] value)
+  {
+    float[][] buffer = new float[8][8];
+
+    for (int u = 0; u < 8; u++)
+      {
+        for (int v = 0; v < 8; v++)
+          {
+            buffer[u][v] =
+              (float) (1 / 4) * (float) C((int) u) * (float) C((int) v);
+            float innerval = 0;
+            for (int x = 0; x < 8; x++)
+              {
+                for (int y = 0; y < 8; y++)
+                  {
+                    innerval += value[y][x]
+                                  * Math.cos(((2 * x + 1) * u * Math.PI) / 16)
+                                  * Math.cos(((2 * y + 1) * v * Math.PI) / 16);
+                  }
+              }
+            buffer[u][v] *= innerval;
+          }
+      }
+    return (buffer);
+  }
+
+  public float[][] fast_fdct(float[][] input)
+  {
+    float output[][] = new float[8][8];
+    double temp[][] = new double[8][8];
+    double temp1;
+    int i;
+    int j;
+    int k;
+
+    for (i = 0; i < 8; i++)
+      {
+        for (j = 0; j < 8; j++)
+          {
+            temp[i][j] = 0.0;
+            for (k = 0; k < 8; k++)
+              {
+                temp[i][j] += (((int) (input[i][k]) - 128) * cT[k][j]);
+              }
+          }
+      }
+
+    for (i = 0; i < 8; i++)
+      {
+        for (j = 0; j < 8; j++)
+          {
+            temp1 = 0.0;
+
+            for (k = 0; k < 8; k++)
+              {
+                temp1 += (c[i][k] * temp[k][j]);
+              }
+
+            output[i][j] = (int) Math.round(temp1) * 8;
+          }
+      }
+
+    return output;
+  }
+
+  /**
+   * fast_idct - Figure A.3.3 IDCT (informative) on A-5 of the ISO DIS
+   * 10918-1. Requires and Guidelines. This is a fast IDCT, it much more
+   * effecient and only inaccurate at about 1/1000th of a percent of values
+   * analyzed. Cannot be static because initMatrix must run before any
+   * fast_idct values can be computed.
+   *
+   * @param input
+   * @return
+   */
+  public double[][] fast_idct(double[][] input)
+  {
+    double output[][] = new double[8][8];
+    double temp[][] = new double[8][8];
+    double temp1;
+    int i, j, k;
+    for (i = 0; i < 8; i++)
+      {
+        for (j = 0; j < 8; j++)
+          {
+            temp[i][j] = 0.0;
+            for (k = 0; k < 8; k++)
+              {
+                temp[i][j] += input[i][k] * c[k][j];
+              }
+          }
+      }
+    for (i = 0; i < 8; i++)
+      {
+        for (j = 0; j < 8; j++)
+          {
+            temp1 = 0.0;
+            for (k = 0; k < 8; k++)
+              temp1 += cT[i][k] * temp[k][j];
+            temp1 += 128.0;
+            if (temp1 < 0)
+              output[i][j] = 0;
+            else if (temp1 > 255)
+              output[i][j] = 255;
+            else
+              output[i][j] = (int) Math.round(temp1);
+          }
+      }
+    return output;
+  }
+
+  public double[][] idj_fast_fdct(float input[][])
+  {
+    double output[][] = new double[8][8];
+    double tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7;
+    double tmp10, tmp11, tmp12, tmp13;
+    double z1, z2, z3, z4, z5, z11, z13;
+    int i;
+    int j;
+
+    // Subtracts 128 from the input values
+    for (i = 0; i < 8; i++)
+      {
+        for (j = 0; j < 8; j++)
+          {
+            output[i][j] = ((double) input[i][j] - (double) 128.0);
+            //                        input[i][j] -= 128;
+
+          }
+      }
+
+    for (i = 0; i < 8; i++)
+      {
+        tmp0 = output[i][0] + output[i][7];
+        tmp7 = output[i][0] - output[i][7];
+        tmp1 = output[i][1] + output[i][6];
+        tmp6 = output[i][1] - output[i][6];
+        tmp2 = output[i][2] + output[i][5];
+        tmp5 = output[i][2] - output[i][5];
+        tmp3 = output[i][3] + output[i][4];
+        tmp4 = output[i][3] - output[i][4];
+
+        tmp10 = tmp0 + tmp3;
+        tmp13 = tmp0 - tmp3;
+        tmp11 = tmp1 + tmp2;
+        tmp12 = tmp1 - tmp2;
+
+        output[i][0] = tmp10 + tmp11;
+        output[i][4] = tmp10 - tmp11;
+
+        z1 = (tmp12 + tmp13) * (double) 0.707106781;
+        output[i][2] = tmp13 + z1;
+        output[i][6] = tmp13 - z1;
+
+        tmp10 = tmp4 + tmp5;
+        tmp11 = tmp5 + tmp6;
+        tmp12 = tmp6 + tmp7;
+
+        z5 = (tmp10 - tmp12) * (double) 0.382683433;
+        z2 = ((double) 0.541196100) * tmp10 + z5;
+        z4 = ((double) 1.306562965) * tmp12 + z5;
+        z3 = tmp11 * ((double) 0.707106781);
+
+        z11 = tmp7 + z3;
+        z13 = tmp7 - z3;
+
+        output[i][5] = z13 + z2;
+        output[i][3] = z13 - z2;
+        output[i][1] = z11 + z4;
+        output[i][7] = z11 - z4;
+      }
+
+    for (i = 0; i < 8; i++)
+      {
+        tmp0 = output[0][i] + output[7][i];
+        tmp7 = output[0][i] - output[7][i];
+        tmp1 = output[1][i] + output[6][i];
+        tmp6 = output[1][i] - output[6][i];
+        tmp2 = output[2][i] + output[5][i];
+        tmp5 = output[2][i] - output[5][i];
+        tmp3 = output[3][i] + output[4][i];
+        tmp4 = output[3][i] - output[4][i];
+
+        tmp10 = tmp0 + tmp3;
+        tmp13 = tmp0 - tmp3;
+        tmp11 = tmp1 + tmp2;
+        tmp12 = tmp1 - tmp2;
+
+        output[0][i] = tmp10 + tmp11;
+        output[4][i] = tmp10 - tmp11;
+
+        z1 = (tmp12 + tmp13) * (double) 0.707106781;
+        output[2][i] = tmp13 + z1;
+        output[6][i] = tmp13 - z1;
+
+        tmp10 = tmp4 + tmp5;
+        tmp11 = tmp5 + tmp6;
+        tmp12 = tmp6 + tmp7;
+
+        z5 = (tmp10 - tmp12) * (double) 0.382683433;
+        z2 = ((double) 0.541196100) * tmp10 + z5;
+        z4 = ((double) 1.306562965) * tmp12 + z5;
+        z3 = tmp11 * ((double) 0.707106781);
+
+        z11 = tmp7 + z3;
+        z13 = tmp7 - z3;
+
+        output[5][i] = z13 + z2;
+        output[3][i] = z13 - z2;
+        output[1][i] = z11 + z4;
+        output[7][i] = z11 - z4;
+      }
+
+    return output;
+  }
+
+}
diff --git a/libjava/classpath/gnu/javax/imageio/jpeg/HuffmanTable.java b/libjava/classpath/gnu/javax/imageio/jpeg/HuffmanTable.java
new file mode 100644
index 000000000..78f3c1c4f
--- /dev/null
+++ b/libjava/classpath/gnu/javax/imageio/jpeg/HuffmanTable.java
@@ -0,0 +1,207 @@
+/* HuffmanTable.java --
+   Copyright (C)  2006  Free Software Foundation, Inc.
+
+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.javax.imageio.jpeg;
+
+import java.io.IOException;
+
+import javax.imageio.plugins.jpeg.JPEGHuffmanTable;
+
+
+/**
+ * This Object construct a JPEGHuffmanTable which can be used to encode/decode
+ * a scan from a JPEG codec stream. The table must be initalized with either a
+ * BITS byte amount and a Huffman Table Value for decoding or a Huffman Size
+ * and Huffman Code table for encoding.
+ */
+public class HuffmanTable
+{
+  public final static int HUFFMAN_MAX_TABLES = 4;
+
+  private short[]  huffcode = new short[256];
+  private short[]  huffsize = new short[256];
+  private short[]  EHUFCO;
+  private short[]  EHUFSI;
+  private short[]  valptr = new short[16];
+  private short[]  mincode = {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+                            -1,-1,-1};
+  private short[]  maxcode = {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+                            -1, -1, -1};
+  private short[] huffval;
+  private short[] bits;
+
+  static byte JPEG_DC_TABLE = 0;
+  static byte JPEG_AC_TABLE = 1;
+
+  private short lastk = 0;
+
+  public HuffmanTable(JPEGHuffmanTable table)
+  {
+    huffcode = table.getValues();
+    bits = table.getLengths();
+  }
+
+  /**
+   * Generated from FIGURE C.1 - Generation of table of Huffman code sizes on
+   * ISO DIS 10918-1. Requirements and Guidelines
+   */
+  private void generateSizeTable()
+  {
+    short index=0;
+    for(short i=0; i < bits.length ; i++)
+      {
+        for(short j=0; j < bits[i] ; j++)
+          {
+            huffsize[index] = (short) (i+1);
+            index++;
+          }
+      }
+    lastk = index;
+  }
+
+  /**
+   * Generated from FIGURE C.2 - Generation of table of Huffman codes on
+   * ISO DIS 10918-1. Requirements and Guidelines
+   */
+  private void generateCodeTable()
+  {
+    short k=0;
+    short si = huffsize[0];
+    short code = 0;
+    for(short i=0; i < huffsize.length ; i++)
+      {
+        while(huffsize[k]==si)
+          {
+            huffcode[k] = code;
+            code++;
+            k++;
+          }
+        code <<= 1;
+        si++;
+      }
+  }
+
+  /**
+   * Generated from FIGURE F.15 - Generation of decode table generation on
+   * ISO DIS 10918-1. Requirements and Guidelines
+   */
+  private void generateDecoderTables()
+  {
+    short bitcount = 0;
+    for(int i=0; i < 16 ; i++)
+      {
+        if(bits[i]!=0)
+          valptr[i] = bitcount;
+        for(int j=0 ; j < bits[i] ; j++)
+          {
+            if(huffcode[j+bitcount] < mincode[i] || mincode[i] == -1)
+              mincode[i] = huffcode[j+bitcount];
+
+            if(huffcode[j+bitcount] > maxcode[i])
+              maxcode[i] = huffcode[j+bitcount];
+          }
+        if(mincode[i]!=-1)
+          valptr[i] = (short) (valptr[i] - mincode[i]);
+        bitcount += bits[i];
+      }
+  }
+
+  /**
+   * Generated from FIGURE C.3 - Generation of Order Codes and tables EHUFCO
+   * and EHUFSI from the ISO DIS 10918-1. Requirements and Guidelines
+   */
+  public void orderCodes(boolean isDC)
+  {
+    EHUFCO = new short[isDC ? 15 : 255];
+    EHUFSI = new short[isDC ? 15 : 255];
+
+    for (int p=0; p < lastk ; p++)
+      {
+        int i = huffval[p];
+        if(i < 0 || i > EHUFCO.length || EHUFSI[i]!=0)
+          System.err.println("Error, bad huffman table.");
+        EHUFCO[i] = huffcode[p];
+        EHUFSI[i] = huffsize[p];
+      }
+  }
+
+  /**
+   * Generated from FIGURE F.12 - Extending the sign bit of a decoded value in on
+   * ISO DIS 10918-1. Requirements and Guidelines<p>
+   *
+   * @param diff TODO
+   * @param t TODO
+   * @return TODO
+   */
+  public static int extend(int diff, int t)
+  {
+    int Vt = (int)Math.pow(2,(t-1));
+    if(diff<Vt)
+      {
+        Vt=(-1 << t)+1;
+        diff=diff+Vt;
+      }
+    return diff;
+  }
+
+  /**
+   * Generated from FIGURE F.16 - Procedure for DECODE on
+   * ISO DIS 10918-1. Requirements and Guidelines<p>
+   *
+   * This function takes in a dynamic amount of bits and using the Huffman
+   * table returns information on how many bits must be read in to a byte in
+   * order to reconstruct said byte.
+   *
+   * @param JPEGStream the bits of the data stream.
+   */
+  public int decode(JPEGImageInputStream JPEGStream)
+    throws IOException, JPEGException
+  {
+    int i=0;
+    short code = (short) JPEGStream.readBits(1);
+    while(code > maxcode[i])
+      {
+        i++;
+        code <<= 1;
+        code |= JPEGStream.readBits(1);
+      }
+    int val = huffval[code+(valptr[i])];
+    if(val < 0)
+      val = 256 + val;
+    return val;
+  }
+}
diff --git a/libjava/classpath/gnu/javax/imageio/jpeg/JPEGComponent.java b/libjava/classpath/gnu/javax/imageio/jpeg/JPEGComponent.java
new file mode 100644
index 000000000..7be67a02a
--- /dev/null
+++ b/libjava/classpath/gnu/javax/imageio/jpeg/JPEGComponent.java
@@ -0,0 +1,351 @@
+/* JPEGComponent.java --
+   Copyright (C)  2005  Free Software Foundation, Inc.
+
+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.javax.imageio.jpeg;
+
+import java.util.ArrayList;
+import java.io.IOException;
+import java.awt.image.WritableRaster;
+
+import javax.imageio.plugins.jpeg.JPEGHuffmanTable;
+
+/**
+ * This class holds the methods to decode and write a component information to
+ * a raster.
+ */
+public class JPEGComponent
+{
+  public byte factorH, factorV, component_id, quant_id;
+  public int width = 0, height = 0, maxV = 0, maxH = 0;
+  public HuffmanTable ACTable;
+  public HuffmanTable DCTable;
+  public int[] quantizationTable;
+  public double previousDC = 0;
+  ArrayList data = new ArrayList();
+
+  /**
+   * Initializes the component
+   *
+   * @param id
+   * @param factorHorizontal
+   * @param factorVertical
+   * @param quantizationID
+   */
+  public JPEGComponent(byte id, byte factorHorizontal, byte factorVertical,
+                       byte quantizationID)
+  {
+    component_id = id;
+    factorH = factorHorizontal;
+    factorV = factorVertical;
+    quant_id = quantizationID;
+  }
+
+  /**
+   * If a restart marker is found with too little of an MCU count (i.e. our
+   * Restart Interval is 63 and we have 61 we copy the last MCU until it's
+   * full)
+   *
+   * @param index
+   * @param length
+   */
+  public void padMCU(int index, int length)
+  {
+    double[] src = (double[]) data.get(index - 1);
+    for (int i = 0; i < length; i++)
+      data.add(index, src);
+  }
+
+  /**
+   * Reset the interval by setting the previous DC value
+   */
+  public void resetInterval()
+  {
+    previousDC = 0;
+  }
+
+  /**
+   * Run the Quantization backward method on all of the block data.
+   */
+  public void quantitizeData()
+  {
+    for (int i = 0; i < data.size(); i++)
+      {
+        double[] mydata = (double[]) data.get(i);
+        for (int j = 0; j < mydata.length; j++)
+          mydata[j] *= quantizationTable[j];
+      }
+  }
+
+  public void setDCTable(JPEGHuffmanTable table)
+  {
+    DCTable = new HuffmanTable(table);
+  }
+
+  public void setACTable(JPEGHuffmanTable table)
+  {
+    ACTable = new HuffmanTable(table);
+  }
+
+  /**
+   * Run the Inverse DCT method on all of the block data
+   */
+  public void idctData(DCT myDCT)
+  {
+    for (int i = 0; i < data.size(); i++)
+      data.add(i,myDCT.fast_idct(ZigZag.decode8x8_map((double[]) data.remove(i))));
+  }
+
+  /**
+   * This scales up the component size based on the factor size. This
+   * calculates everyting up automatically so it's simply ran at the end of
+   * the frame to normalize the size of all of the components.
+   */
+  public void scaleByFactors()
+  {
+    int factorUpVertical = maxV / factorV;
+    int factorUpHorizontal = maxH / factorH;
+
+    if (factorUpVertical > 1)
+      {
+        for (int i = 0; i < data.size(); i++)
+          {
+            double[][] src = (double[][]) data.remove(i);
+            double[][] dest =
+              new double[src.length * factorUpVertical][src[0].length];
+            for (int j = 0; j < src.length; j++)
+              {
+                for (int u = 0; u < factorUpVertical; u++)
+                  {
+                    dest[j * factorUpVertical + u] = src[j];
+                  }
+              }
+            data.add(i, dest);
+          }
+      }
+
+    if (factorUpHorizontal > 1)
+      {
+        for (int i = 0; i < data.size(); i++)
+          {
+            double[][] src = (double[][]) data.remove(i);
+            double[][] dest =
+              new double[src.length][src[0].length * factorUpHorizontal];
+            for (int j = 0; j < src.length; j++)
+              {
+                for (int u = 0; u < src[0].length; u++)
+                  {
+                    for (int v = 0; v < factorUpHorizontal; v++)
+                      dest[j][u * factorUpHorizontal + v] = src[j][u];
+                  }
+              }
+            data.add(i, dest);
+          }
+      }
+  }
+
+  /**
+   * This write the block of data to the raster throwing out anything that
+   * spills over the raster width or height.
+   *
+   * @param raster
+   * @param data
+   * @param compIndex
+   * @param x
+   * @param y
+   */
+  public void writeBlock(WritableRaster raster, double[][] data,
+                         int compIndex, int x, int y)
+  {
+    for (int yIndex = 0; yIndex < data.length; yIndex++)
+      {
+        for (int xIndex = 0; xIndex < data[yIndex].length; xIndex++)
+          {
+            // The if statement is needed because blocks can spill over the
+            // frame width because they are padded to make sure we keep the
+            // height of the block the same as the width of the block
+            if (x + xIndex < raster.getWidth()
+                && y + yIndex < raster.getHeight())
+              raster.setSample(x + xIndex, y + yIndex, compIndex,
+                               data[yIndex][xIndex]);
+          }
+      }
+  }
+
+  /**
+   * This writes data to a raster block, so really it's reading not writing
+   * but it writes the data to the raster block by factor size in a zig zag
+   * fashion. This has the helper function writeBlock which does the actual
+   * writing.
+   *
+   * @param raster
+   * @param componentIndex
+   */
+  public void writeData(WritableRaster raster, int componentIndex)
+  {
+    int x = 0, y = 0, lastblockheight = 0, incrementblock = 0;
+
+    // Keep looping through all of the blocks until there are no more.
+    while(data.size() > 0)
+      {
+        int blockwidth = 0;
+        int blockheight = 0;
+
+        if (x >= raster.getWidth())
+          {
+            x = 0;
+            y += incrementblock;
+          }
+
+        // Loop through the horizontal component blocks of the MCU first
+        // then for each horizontal line write out all of the vertical
+        // components
+        for (int factorVIndex = 0; factorVIndex < factorV; factorVIndex++)
+          {
+            blockwidth = 0;
+
+            for (int factorHIndex = 0; factorHIndex < factorH; factorHIndex++)
+              {
+                // Captures the width of this block so we can increment the
+                // X coordinate
+                double[][] blockdata = (double[][]) data.remove(0);
+
+                // Writes the data at the specific X and Y coordinate of
+                // this component
+                writeBlock(raster, blockdata, componentIndex, x, y);
+                blockwidth += blockdata[0].length;
+                x += blockdata[0].length;
+                blockheight = blockdata.length;
+              }
+            y += blockheight;
+            x -= blockwidth;
+            lastblockheight += blockheight;
+          }
+        y -= lastblockheight;
+        incrementblock = lastblockheight;
+        lastblockheight = 0;
+        x += blockwidth;
+      }
+  }
+
+  /**
+   * Set the quantization table for this component.
+   *
+   * @param quanttable
+   */
+  public void setQuantizationTable(int[] quanttable)
+  {
+    quantizationTable = quanttable;
+  }
+
+  /**
+   * Read in a partial MCU for this component
+   *
+   * @param stream TODO
+   * @throws JPEGException TODO
+   * @throws IOException TODO
+   */
+  public void readComponentMCU(JPEGImageInputStream stream)
+    throws JPEGException, IOException
+  {
+    for (int i = 0; i < factorH * factorV; i++)
+      {
+        double dc = decode_dc_coefficient(stream);
+        double[] datablock = decode_ac_coefficients(stream);
+        datablock[0] = dc;
+        data.add(datablock);
+      }
+  }
+
+  /**
+   * Generated from text on F-22, F.2.2.1 - Huffman decoding of DC
+   * coefficients on ISO DIS 10918-1. Requirements and Guidelines.
+   *
+   * @param JPEGStream TODO
+   *
+   * @return TODO
+   * @throws JPEGException TODO
+   * @throws IOException TODO
+   */
+  public double decode_dc_coefficient(JPEGImageInputStream JPEGStream)
+        throws JPEGException, IOException
+  {
+    int t = DCTable.decode(JPEGStream);
+    double diff = JPEGStream.readBits(t);
+    diff = HuffmanTable.extend((int) diff, t);
+    diff = (previousDC + diff);
+    previousDC = diff;
+    return diff;
+  }
+
+  /**
+   * Generated from text on F-23, F.13 - Huffman decoded of AC coefficients
+   * on ISO DIS 10918-1. Requirements and Guidelines.
+   *
+   * @param JPEGStream TODO
+   * @return TODO
+   *
+   * @throws JPEGException TODO
+   * @throws IOException TODO
+   */
+  public double[] decode_ac_coefficients(JPEGImageInputStream JPEGStream)
+    throws JPEGException, IOException
+  {
+    double[] zz = new double[64];
+
+    for (int k = 1; k < 64; k++)
+      {
+        int s = ACTable.decode(JPEGStream);
+        int r = s >> 4;
+        s &= 15;
+
+        if (s != 0)
+          {
+            k += r;
+            r = (int) JPEGStream.readBits(s);
+            s = HuffmanTable.extend(r, s);
+            zz[k] = s;
+          }
+        else
+          {
+            if (r != 15)
+              return (zz);
+            k += 15;
+          }
+      }
+    return zz;
+  }
+}
diff --git a/libjava/classpath/gnu/javax/imageio/jpeg/JPEGDecoder.java b/libjava/classpath/gnu/javax/imageio/jpeg/JPEGDecoder.java
new file mode 100644
index 000000000..11d547f4d
--- /dev/null
+++ b/libjava/classpath/gnu/javax/imageio/jpeg/JPEGDecoder.java
@@ -0,0 +1,625 @@
+/* JPEGDecoder.java --
+   Copyright (C)  2006  Free Software Foundation, Inc.
+
+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.javax.imageio.jpeg;
+
+import java.io.IOException;
+import java.nio.ByteOrder;
+
+import javax.imageio.plugins.jpeg.JPEGHuffmanTable;
+import javax.imageio.plugins.jpeg.JPEGQTable;
+import javax.imageio.stream.ImageInputStream;
+
+import java.util.ArrayList;
+import java.util.Hashtable;
+import java.awt.Point;
+import java.awt.Transparency;
+import java.awt.color.ColorSpace;
+import java.awt.image.BufferedImage;
+import java.awt.image.ComponentColorModel;
+import java.awt.image.DataBuffer;
+import java.awt.image.Raster;
+import java.awt.image.WritableRaster;
+
+public class JPEGDecoder
+{
+  byte majorVersion;
+  byte minorVersion;
+  byte units;
+  short Xdensity;
+  short Ydensity;
+  byte Xthumbnail;
+  byte Ythumbnail;
+  byte[] thumbnail;
+  BufferedImage image;
+  int width;
+  int height;
+
+  byte marker;
+
+  /**
+   * This decoder expects JFIF 1.02 encoding.
+   */
+  public static final byte MAJOR_VERSION = (byte) 1;
+  public static final byte MINOR_VERSION = (byte) 2;
+
+  /**
+   * The length of the JFIF field not including thumbnail data.
+   */
+  public static final short JFIF_FIXED_LENGTH = 16;
+
+  /**
+   * The length of the JFIF extension field not including extension
+   * data.
+   */
+  public static final short JFXX_FIXED_LENGTH = 8;
+
+  private JPEGImageInputStream jpegStream;
+
+  ArrayList jpegFrames = new ArrayList();
+
+  JPEGHuffmanTable[] dcTables = new JPEGHuffmanTable[4];
+  JPEGHuffmanTable[] acTables = new JPEGHuffmanTable[4];
+  JPEGQTable[] qTables = new JPEGQTable[4];
+
+    public int getHeight()
+    {
+      return height;
+    }
+
+    public int getWidth()
+    {
+        return width;
+    }
+  public JPEGDecoder(ImageInputStream in)
+    throws IOException, JPEGException
+  {
+    jpegStream = new JPEGImageInputStream(in);
+    jpegStream.setByteOrder(ByteOrder.LITTLE_ENDIAN);
+
+    if (jpegStream.findNextMarker() != JPEGMarker.SOI)
+      throw new JPEGException("Failed to find SOI marker.");
+
+    if (jpegStream.findNextMarker() != JPEGMarker.APP0)
+      throw new JPEGException("Failed to find APP0 marker.");
+
+    int length = jpegStream.readShort();
+    if (!(length >= JFIF_FIXED_LENGTH))
+      throw new JPEGException("Failed to find JFIF field.");
+
+    byte[] identifier = new byte[5];
+    jpegStream.read(identifier);
+    if (identifier[0] != JPEGMarker.JFIF_J
+        || identifier[1] != JPEGMarker.JFIF_F
+        || identifier[2] != JPEGMarker.JFIF_I
+        || identifier[3] != JPEGMarker.JFIF_F
+        || identifier[4] != JPEGMarker.X00)
+      throw new JPEGException("Failed to read JFIF identifier.");
+
+    majorVersion = jpegStream.readByte();
+    minorVersion = jpegStream.readByte();
+    if (majorVersion != MAJOR_VERSION
+        || (majorVersion == MAJOR_VERSION
+            && minorVersion < MINOR_VERSION))
+      throw new JPEGException("Unsupported JFIF version.");
+
+    units = jpegStream.readByte();
+    if (units > (byte) 2)
+      throw new JPEGException("Units field is out of range.");
+
+    Xdensity = jpegStream.readShort();
+    Ydensity = jpegStream.readShort();
+    Xthumbnail = jpegStream.readByte();
+    Ythumbnail = jpegStream.readByte();
+
+    // 3 * for RGB data
+    int thumbnailLength = 3 * Xthumbnail * Ythumbnail;
+    if (length > JFIF_FIXED_LENGTH
+        && thumbnailLength != length - JFIF_FIXED_LENGTH)
+      throw new JPEGException("Invalid length, Xthumbnail"
+                              + " or Ythumbnail field.");
+
+    if (thumbnailLength > 0)
+      {
+        thumbnail = new byte[thumbnailLength];
+        if (jpegStream.read(thumbnail) != thumbnailLength)
+          throw new IOException("Failed to read thumbnail.");
+      }
+  }
+
+  public void decode()
+    throws IOException
+  {
+    System.out.println ("DECODE!!!");
+    // The frames in this jpeg are loaded into a list. There is
+    // usually just one frame except in heirarchial progression where
+    // there are multiple frames.
+    JPEGFrame frame = null;
+
+    // The restart interval defines how many MCU's we should have
+    // between the 8-modulo restart marker. The restart markers allow
+    // us to tell whether or not our decoding process is working
+    // correctly, also if there is corruption in the image we can
+    // recover with these restart intervals. (See RSTm DRI).
+    int resetInterval = 0;
+
+    // The JPEGDecoder constructor parses the JFIF field.  At this
+    // point jpegStream points to the first byte after the JFIF field.
+
+    // Find the first marker after the JFIF field.
+    byte marker = jpegStream.findNextMarker();
+
+    // Check for a JFIF extension field directly following the JFIF
+    // header and advance the current marker to the next marker in the
+    // stream, if necessary.
+    decodeJFIFExtension();
+
+    // Loop through until there are no more markers to read in, at
+    // that point everything is loaded into the jpegFrames array and
+    // can be processed.
+    while (true)
+      {
+        switch (marker)
+          {
+            // APPn Application Reserved Information - Just throw this
+            // information away because we wont be using it.
+          case JPEGMarker.APP0:
+          case JPEGMarker.APP1:
+          case JPEGMarker.APP2:
+          case JPEGMarker.APP3:
+          case JPEGMarker.APP4:
+          case JPEGMarker.APP5:
+          case JPEGMarker.APP6:
+          case JPEGMarker.APP7:
+          case JPEGMarker.APP8:
+          case JPEGMarker.APP9:
+          case JPEGMarker.APP10:
+          case JPEGMarker.APP11:
+          case JPEGMarker.APP12:
+          case JPEGMarker.APP13:
+          case JPEGMarker.APP14:
+          case JPEGMarker.APP15:
+            jpegStream.skipBytes(jpegStream.readShort() - 2);
+            break;
+
+          case JPEGMarker.SOF0:
+            // SOFn Start of Frame Marker, Baseline DCT - This is the start
+            // of the frame header that defines certain variables that will
+            // be carried out through the rest of the encoding. Multiple
+            // frames are used in a heirarchiel system, however most JPEG's
+            // only contain a single frame.
+            jpegFrames.add(new JPEGFrame());
+            frame = (JPEGFrame) jpegFrames.get(jpegFrames.size() - 1);
+            // Skip the frame length.
+            jpegStream.readShort();
+            // Bits percision, either 8 or 12.
+            frame.setPrecision(jpegStream.readByte());
+            // Scan lines = to the height of the frame.
+            frame.setScanLines(jpegStream.readShort());
+            // Scan samples per line = to the width of the frame.
+            frame.setSamplesPerLine(jpegStream.readShort());
+            // Number of Color Components (or channels).
+            frame.setComponentCount(jpegStream.readByte());
+
+            // Set the color mode for this frame, so far only 2 color
+            // modes are supported.
+            if (frame.getComponentCount() == 1)
+              frame.setColorMode(JPEGFrame.JPEG_COLOR_GRAY);
+            else
+              frame.setColorMode(JPEGFrame.JPEG_COLOR_YCbCr);
+            // Add all of the necessary components to the frame.
+            for (int i = 0; i < frame.getComponentCount(); i++)
+              frame.addComponent(jpegStream.readByte(), jpegStream.readByte(),
+                                 jpegStream.readByte());
+            break;
+
+          case JPEGMarker.SOF2:
+            jpegFrames.add(new JPEGFrame());
+            frame = (JPEGFrame) jpegFrames.get(jpegFrames.size() - 1);
+            // Skip the frame length.
+            jpegStream.readShort();
+            // Bits percision, either 8 or 12.
+            frame.setPrecision(jpegStream.readByte());
+            // Scan lines = to the height of the frame.
+            frame.setScanLines(jpegStream.readShort());
+            // Scan samples per line = to the width of the frame.
+            frame.setSamplesPerLine(jpegStream.readShort());
+            // Number of Color Components (or channels).
+            frame.setComponentCount(jpegStream.readByte());
+
+            // Set the color mode for this frame, so far only 2 color
+            // modes are supported.
+            if (frame.getComponentCount() == 1)
+              frame.setColorMode(JPEGFrame.JPEG_COLOR_GRAY);
+            else
+              frame.setColorMode(JPEGFrame.JPEG_COLOR_YCbCr);
+
+            // Add all of the necessary components to the frame.
+            for (int i = 0; i < frame.getComponentCount(); i++)
+              frame.addComponent(jpegStream.readByte(), jpegStream.readByte(),
+                                 jpegStream.readByte());
+            break;
+
+          case JPEGMarker.DHT:
+            // DHT non-SOF Marker - Huffman Table is required for decoding
+            // the JPEG stream, when we receive a marker we load in first
+            // the table length (16 bits), the table class (4 bits), table
+            // identifier (4 bits), then we load in 16 bytes and each byte
+            // represents the count of bytes to load in for each of the 16
+            // bytes. We load this into an array to use later and move on 4
+            // huffman tables can only be used in an image.
+            int huffmanLength = (jpegStream.readShort() - 2);
+
+            // Keep looping until we are out of length.
+            int index = huffmanLength;
+
+            // Multiple tables may be defined within a DHT marker. This
+            // will keep reading until there are no tables left, most
+            // of the time there are just one tables.
+            while (index > 0)
+              {
+                // Read the identifier information and class
+                // information about the Huffman table, then read the
+                // 16 byte codelength in and read in the Huffman values
+                // and put it into table info.
+                byte huffmanInfo = jpegStream.readByte();
+                byte tableClass = (byte) (huffmanInfo >> 4);
+                byte huffmanIndex = (byte) (huffmanInfo & 0x0f);
+                short[] codeLength = new short[16];
+                jpegStream.readFully(codeLength, 0, codeLength.length);
+                int huffmanValueLen = 0;
+                for (int i = 0; i < 16; i++)
+                  huffmanValueLen += codeLength[i];
+                index -= (huffmanValueLen + 17);
+                short[] huffmanVal = new short[huffmanValueLen];
+                for (int i = 0; i < huffmanVal.length; i++)
+                  huffmanVal[i] = jpegStream.readByte();
+                // Assign DC Huffman Table.
+                if (tableClass == HuffmanTable.JPEG_DC_TABLE)
+                  dcTables[(int) huffmanIndex] = new JPEGHuffmanTable(codeLength,
+                                                                      huffmanVal);
+                // Assign AC Huffman Table.
+                else if (tableClass == HuffmanTable.JPEG_AC_TABLE)
+                  acTables[(int) huffmanIndex] = new JPEGHuffmanTable(codeLength,
+                                                                      huffmanVal);
+              }
+            break;
+          case JPEGMarker.DQT:
+            // DQT non-SOF Marker - This defines the quantization
+            // coeffecients, this allows us to figure out the quality of
+            // compression and unencode the data. The data is loaded and
+            // then stored in to an array.
+            short quantizationLength = (short) (jpegStream.readShort() - 2);
+            for (int j = 0; j < quantizationLength / 65; j++)
+              {
+                byte quantSpecs = jpegStream.readByte();
+                int[] quantData = new int[64];
+                if ((byte) (quantSpecs >> 4) == 0)
+                  // Precision 8 bit.
+                  {
+                    for (int i = 0; i < 64; i++)
+                      quantData[i] = jpegStream.readByte();
+
+                  }
+                else if ((byte) (quantSpecs >> 4) == 1)
+                  // Precision 16 bit.
+                  {
+                    for (int i = 0; i < 64; i++)
+                      quantData[i] = jpegStream.readShort();
+                  }
+                qTables[(int) (quantSpecs & 0x0f)] = new JPEGQTable (quantData);
+              }
+            break;
+          case JPEGMarker.SOS:
+            // SOS non-SOF Marker - Start Of Scan Marker, this is where the
+            // actual data is stored in a interlaced or non-interlaced with
+            // from 1-4 components of color data, if three components most
+            // likely a YCrCb model, this is a fairly complex process.
+
+            // Read in the scan length.
+            jpegStream.readShort();
+            // Number of components in the scan.
+            byte numberOfComponents = jpegStream.readByte();
+            byte[] componentSelector = new byte[numberOfComponents];
+            for (int i = 0; i < numberOfComponents; i++)
+              {
+                // Component ID, packed byte containing the Id for the
+                // AC table and DC table.
+                byte componentID = jpegStream.readByte();
+                byte tableInfo = jpegStream.readByte();
+                frame.setHuffmanTables(componentID,
+                                       acTables[(byte) (tableInfo >> 4)],
+                                       dcTables[(byte) (tableInfo & 0x0f)]);
+                componentSelector[i] = componentID;
+              }
+            byte startSpectralSelection = jpegStream.readByte();
+            byte endSpectralSelection = jpegStream.readByte();
+            byte successiveApproximation = jpegStream.readByte();
+
+            int mcuIndex = 0;
+            int mcuTotalIndex = 0;
+            // This loops through until a MarkerTagFound exception is
+            // found, if the marker tag is a RST (Restart Marker) it
+            // simply skips it and moves on this system does not handle
+            // corrupt data streams very well, it could be improved by
+            // handling misplaced restart markers.
+            while (true)
+              {
+                try
+                  {
+                    // Loop though capturing MCU, instruct each
+                    // component to read in its necessary count, for
+                    // scaling factors the components automatically
+                    // read in how much they need
+                    for (int compIndex = 0; compIndex < numberOfComponents; compIndex++)
+                      {
+                        JPEGComponent comp = frame.components.getComponentByID(componentSelector[compIndex]);
+                        comp.readComponentMCU(jpegStream);
+                      }
+                    mcuIndex++;
+                    mcuTotalIndex++;
+                  }
+                // We've found a marker, see if the marker is a restart
+                // marker or just the next marker in the stream. If
+                // it's the next marker in the stream break out of the
+                // while loop, if it's just a restart marker skip it
+                catch (JPEGMarkerFoundException bse)
+                  {
+                    // Handle JPEG Restart Markers, this is where the
+                    // count of MCU's per interval is compared with
+                    // the count actually obtained, if it's short then
+                    // pad on some MCU's ONLY for components that are
+                    // greater than one. Also restart the DC prediction
+                    // to zero.
+                    if (marker == JPEGMarker.RST0
+                        || marker == JPEGMarker.RST1
+                        || marker == JPEGMarker.RST2
+                        || marker == JPEGMarker.RST3
+                        || marker == JPEGMarker.RST4
+                        || marker == JPEGMarker.RST5
+                        || marker == JPEGMarker.RST6
+                        || marker == JPEGMarker.RST7)
+                      {
+                        for (int compIndex = 0; compIndex < numberOfComponents; compIndex++)
+                          {
+                            JPEGComponent comp = frame.components.getComponentByID(componentSelector[compIndex]);
+                            if (compIndex > 1)
+                              comp.padMCU(mcuTotalIndex, resetInterval - mcuIndex);
+                            comp.resetInterval();
+                          }
+                        mcuTotalIndex += (resetInterval - mcuIndex);
+                        mcuIndex = 0;
+                      }
+                    else
+                      {
+                        // We're at the end of our scan, exit out.
+                        break;
+                      }
+                  }
+              }
+            break;
+          case JPEGMarker.DRI:
+            // DRI - This defines the restart interval, if we have a
+            // restart interval when we reach our restart modulo calculate
+            // whether the count of MCU's specified in the restart
+            // interval have been reached, if they havent then pad with
+            // whatever MCU was last used, this is supposed to be a form of
+            // error recovery but it turns out that some JPEG encoders
+            // purposely cause missing MCU's on repeating MCU's to compress
+            // data even more (even though it adds an extra layer of
+            // complexity.. But since when is JPEG easy?
+            jpegStream.skipBytes(2);
+            resetInterval = jpegStream.readShort();
+            break;
+          case JPEGMarker.COM:
+            // COM - This is a comment that was inserted into the JPEG, we
+            // simply skip over the comment because it's really of no
+            // importance, usually contains a verbal description of the
+            // application or author who created the JPEG.
+            jpegStream.skipBytes(jpegStream.readShort() - 2);
+            break;
+          case JPEGMarker.DNL:
+            // DNL - This sets the height of the image. This is the Define
+            // Number Lines for the image, I'm not sure exactly why we need
+            // this but, whatever we'll abide.
+            frame.setScanLines(jpegStream.readShort());
+            break;
+          case JPEGMarker.EOI:
+            // EOI - End of Image, this processes the frames and turns the
+            // frames into a buffered image.
+
+            if (jpegFrames.size() == 0)
+              {
+                return;
+              }
+            else if (jpegFrames.size() == 1)
+              {
+                // Only one frame, JPEG Non-Heirarchial Frame.
+
+                DCT myDCT = new DCT();
+                WritableRaster raster =
+                  Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE,
+                                                 frame.width,
+                                                 frame.height,
+                                                 frame.getComponentCount(),
+                                                 new Point(0, 0));
+
+                // Unencode the data.
+                for (int i = 0; i < frame.getComponentCount(); i++)
+                  {
+                    JPEGComponent comp = frame.components.get(i);
+                    comp.setQuantizationTable(qTables[comp.quant_id].getTable());
+                    comp.quantitizeData();
+                    comp.idctData(myDCT);
+                  }
+                // Scale the image and write the data to the raster.
+                for (int i = 0; i < frame.getComponentCount(); i++)
+                  {
+                    JPEGComponent comp = frame.components.get(i);
+                    comp.scaleByFactors();
+                    comp.writeData(raster, i);
+                    // Ensure garbage collection.
+                    comp = null;
+                  }
+                // Grayscale Color Image (1 Component).
+                if (frame.getComponentCount() == 1)
+                  {
+                    ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_GRAY);
+                    ComponentColorModel ccm =
+                      new ComponentColorModel(cs, false, false,
+                                              Transparency.OPAQUE,
+                                              DataBuffer.TYPE_BYTE);
+                    image = new BufferedImage(ccm, raster, false,
+                                              new Hashtable());
+                  }
+                // YCbCr Color Image (3 Components).
+                else if (frame.getComponentCount() == 3)
+                  {
+                    ComponentColorModel ccm =
+                      new ComponentColorModel(new YCbCr_ColorSpace(), false,
+                                              false, Transparency.OPAQUE,
+                                              DataBuffer.TYPE_BYTE);
+                    image = new BufferedImage(ccm, raster, false,
+                                              new Hashtable());
+                  }
+                // Possibly CMYK or RGBA ?
+                else
+                  {
+                    throw new JPEGException("Unsupported Color Mode: 4 "
+                                            + "Component Color Mode found.");
+                  }
+                height = frame.height;
+                width = frame.width;
+              }
+            else
+              {
+                //JPEG Heirarchial Frame (progressive or baseline).
+                throw new JPEGException("Unsupported Codec Type:"
+                                        + " Hierarchial JPEG");
+              }
+            break;
+          case JPEGMarker.SOF1:
+            // ERROR - If we encounter any of the following marker codes
+            // error out with a codec exception, progressive, heirarchial,
+            // differential, arithmetic, lossless JPEG's are not supported.
+            // This is where enhancements can be made for future versions.
+            // Thankfully 99% of all JPEG's are baseline DCT.
+            throw new JPEGException("Unsupported Codec Type: Extended "
+                                    + "Sequential DCT JPEG's Not-Supported");
+            //case JPEGMarker.SOF2:
+            //  throw new JPEGException("Unsupported Codec Type: Progressive DCT JPEG's Not-Supported");
+          case JPEGMarker.SOF3:
+            throw new JPEGException("Unsupported Codec Type:"
+                                    + " Lossless (sequential)");
+          case JPEGMarker.SOF5:
+            throw new JPEGException("Unsupported Codec Type:"
+                                    + " Differential sequential DCT");
+          case JPEGMarker.SOF6:
+            throw new JPEGException("Unsupported Codec Type:"
+                                    + " Differential progressive DCT");
+          case JPEGMarker.SOF7:
+            throw new JPEGException("Unsupported Codec Type:"
+                                    + " Differential lossless");
+          case JPEGMarker.SOF9:
+          case JPEGMarker.SOF10:
+          case JPEGMarker.SOF11:
+          case JPEGMarker.SOF13:
+          case JPEGMarker.SOF14:
+          case JPEGMarker.SOF15:
+            throw new JPEGException("Unsupported Codec Type:"
+                                    + " Arithmetic Coding Frame");
+          default:
+            // Unknown marker found, ignore it.
+          }
+        marker = jpegStream.findNextMarker();
+      }
+  }
+
+  // If the current marker is APP0, tries to decode a JFIF extension
+  // and advances the current marker to the next marker in the stream.
+  private void decodeJFIFExtension() throws IOException
+  {
+    if (marker == JPEGMarker.APP0)
+      {
+        int length = jpegStream.readShort();
+
+        if (length >= JFXX_FIXED_LENGTH)
+          {
+            byte[] identifier = new byte[5];
+            jpegStream.read(identifier);
+            if (identifier[0] != JPEGMarker.JFIF_J
+                || identifier[1] != JPEGMarker.JFIF_F
+                || identifier[2] != JPEGMarker.JFIF_X
+                || identifier[3] != JPEGMarker.JFIF_X
+                || identifier[4] != JPEGMarker.X00)
+              // Not a JFXX field.  Ignore it and continue.
+              jpegStream.skipBytes(length - 7);
+            else
+              {
+                byte extension_code = jpegStream.readByte();
+
+                switch (extension_code)
+                  {
+                  case JPEGMarker.JFXX_JPEG:
+                    // FIXME: add support for JFIF Extension:
+                    // Thumbnail coded using JPEG.
+                    jpegStream.skipBytes(length - 8);
+                  case JPEGMarker.JFXX_ONE_BPP:
+                    // FIXME: add support for JFIF Extension:
+                    // Thumbnail stored using 1 byte/pixel.
+                    jpegStream.skipBytes(length - 8);
+                  case JPEGMarker.JFXX_THREE_BPP:
+                    // FIXME: add support for JFIF Extension:
+                    // Thumbnail stored using 3 bytes/pixel.
+                    jpegStream.skipBytes(length - 8);
+                  }
+              }
+          }
+        else
+          {
+            // Unknown APP0 marker.  Ignore it and continue.
+            jpegStream.skipBytes(length - 2);
+          }
+        marker = jpegStream.findNextMarker();
+      }
+  }
+
+  public BufferedImage getImage()
+  {
+    return image;
+  }
+}
diff --git a/libjava/classpath/gnu/javax/imageio/jpeg/JPEGException.java b/libjava/classpath/gnu/javax/imageio/jpeg/JPEGException.java
new file mode 100644
index 000000000..a2c06e27e
--- /dev/null
+++ b/libjava/classpath/gnu/javax/imageio/jpeg/JPEGException.java
@@ -0,0 +1,48 @@
+/* JPEGException.java --
+   Copyright (C)  2006  Free Software Foundation, Inc.
+
+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.javax.imageio.jpeg;
+
+import javax.imageio.*;
+
+public class JPEGException extends IIOException
+{
+  public JPEGException(String message)
+  {
+     super(message);
+  }
+}
diff --git a/libjava/classpath/gnu/javax/imageio/jpeg/JPEGFrame.java b/libjava/classpath/gnu/javax/imageio/jpeg/JPEGFrame.java
new file mode 100644
index 000000000..35aed728a
--- /dev/null
+++ b/libjava/classpath/gnu/javax/imageio/jpeg/JPEGFrame.java
@@ -0,0 +1,108 @@
+/* JPEGFrame.java --
+   Copyright (C)  2005  Free Software Foundation, Inc.
+
+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.javax.imageio.jpeg;
+
+import javax.imageio.plugins.jpeg.JPEGHuffmanTable;
+
+public class JPEGFrame
+{
+  public final static byte JPEG_COLOR_GRAY = 1;
+  public final static byte JPEG_COLOR_RGB = 2;
+  public final static byte JPEG_COLOR_YCbCr = 3;
+  public final static byte JPEG_COLOR_CMYK = 4;
+
+  public byte precision = 8;
+  public byte colorMode = JPEGFrame.JPEG_COLOR_YCbCr;
+  public byte componentCount = 0;
+
+  public short width=0, height=0;
+
+  public JPEGScan components;
+
+  public JPEGFrame()
+  {
+    components = new JPEGScan();
+  }
+
+  public void addComponent(byte componentID, byte sampleFactors,
+                           byte quantizationTableID)
+  {
+    byte sampleHorizontalFactor = (byte)(sampleFactors >> 4);
+    byte sampleVerticalFactor = (byte)(sampleFactors & 0x0f);
+    components.addComponent(componentID, sampleHorizontalFactor,
+                            sampleVerticalFactor, quantizationTableID);
+  }
+
+  public void setPrecision(byte data)
+  {
+    precision = data;
+  }
+
+  public void setScanLines(short data)
+  {
+    height = data;
+  }
+
+  public void setSamplesPerLine(short data)
+  {
+    width = data;
+  }
+
+  public void setColorMode(byte data)
+  {
+    colorMode = data;
+  }
+
+  public void setComponentCount(byte data)
+  {
+    componentCount = data;
+  }
+
+  public byte getComponentCount()
+  {
+    return componentCount;
+  }
+
+  public void setHuffmanTables(byte componentID, JPEGHuffmanTable ACTable,
+                               JPEGHuffmanTable DCTable)
+  {
+    JPEGComponent comp = components.getComponentByID(componentID);
+    comp.setACTable(ACTable);
+    comp.setDCTable(DCTable);
+  }
+}
diff --git a/libjava/classpath/gnu/javax/imageio/jpeg/JPEGImageInputStream.java b/libjava/classpath/gnu/javax/imageio/jpeg/JPEGImageInputStream.java
new file mode 100644
index 000000000..f2c26d9d5
--- /dev/null
+++ b/libjava/classpath/gnu/javax/imageio/jpeg/JPEGImageInputStream.java
@@ -0,0 +1,188 @@
+/* JPEGImageInputStream.java --
+   Copyright (C)  2006  Free Software Foundation, Inc.
+
+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.javax.imageio.jpeg;
+
+import java.io.IOException;
+import javax.imageio.stream.ImageInputStream;
+import javax.imageio.stream.ImageInputStreamImpl;
+
+public class JPEGImageInputStream
+  extends ImageInputStreamImpl
+{
+  private ImageInputStream in;
+
+  byte marker;
+
+  public JPEGImageInputStream(ImageInputStream in)
+  {
+    super();
+
+    this.in = in;
+  }
+
+  public int read()
+    throws IOException
+  {
+    setBitOffset(0);
+    return in.read();
+  }
+
+  public int read(byte[] data, int offset, int len)
+    throws IOException
+  {
+    setBitOffset(0);
+    return in.read(data, offset, len);
+  }
+
+  /**
+   * Pull a byte from the stream, this checks to see if the byte is 0xff
+   * and if the next byte isn't 0x00 (stuffed byte) it errors out. If it's
+   * 0x00 then it simply ignores the byte.
+   *
+   * @return the next byte in the buffer
+   *
+   * @throws IOException TODO
+   * @throws BitStreamException TODO
+   */
+  private byte pullByte() throws IOException, JPEGMarkerFoundException
+  {
+    byte mybyte = readByte();
+    // FIXME: handle multiple 0xff in a row
+    if(mybyte==(byte)(0xff))
+      {
+        byte secondbyte = readByte();
+        if(secondbyte != (byte)(0x00))
+          {
+            marker = secondbyte;
+            throw new JPEGMarkerFoundException();
+          }
+      }
+    return mybyte;
+  }
+
+  /**
+   * This returns the marker that was last encountered.  This should only be
+   * used if removeBit() throws a MarkerTagFound exception.
+   *
+   * @return marker as byte
+   */
+  public byte getMarker()
+  {
+    return marker;
+  }
+
+  /**
+   * Removes a bit from the buffer. (Removes from the top of a queue). This
+   * also checks for markers and throws MarkerTagFound exception if it does.
+   * If MarkerTagFound is thrown you can use getMarker() method to get the
+   * marker that caused the throw.
+   *
+   * @param l specifies how many bits you want to remove and add to the
+   *        integer
+   * @return the amount of bits specified by l as an integer
+   *
+   * @throws IOException TODO
+   * @throws JPEGMarkerFoundException
+   * @throws BitStreamException TODO
+   */
+  public int readBit()
+  throws IOException, JPEGMarkerFoundException
+{
+  checkClosed();
+
+  // Calc new bit offset here, readByte resets it.
+  int newOffset = (bitOffset + 1) & 0x7;
+
+  byte data = pullByte();
+
+  if (bitOffset != 0)
+    {
+        seek(getStreamPosition() - 1);
+        data = (byte) (data >> (8 - newOffset));
+    }
+
+  bitOffset = newOffset;
+  return data & 0x1;
+}
+
+
+  /**
+   * This method skips over the the data and finds the next position
+   * in the bit sequence with a X'FF' X'??' sequence.  Multiple X'FF
+   * bytes in sequence are considered padding and interpreted as one
+   * X'FF byte.
+   *
+   * @return the next marker byte in the stream
+   * @throws IOException if the end of the stream is reached
+   * unexpectedly
+   */
+  public byte findNextMarker()
+    throws IOException
+  {
+    boolean marked0xff = false;
+    byte byteinfo = JPEGMarker.X00;
+
+    setBitOffset(0);
+    while (true)
+      {
+        byteinfo = readByte();
+        if (!marked0xff)
+          {
+            if (byteinfo == JPEGMarker.XFF)
+              marked0xff = true;
+          }
+        else
+          {
+            if (byteinfo == JPEGMarker.XFF)
+              // Ignore the value 0xff when it is immediately
+              // followed by another 0xff byte.
+              continue;
+            else if (byteinfo == JPEGMarker.X00)
+              // The sequence 0xff 0x00 is used to encode the
+              // actual value 0xff.  So restart our search for a
+              // marker.
+              marked0xff = false;
+            else
+              // One or more 0xff values were follwed by a
+              // non-0x00, non-0xff value so return this as the
+              // marker byte.
+              return byteinfo;
+          }
+      }
+  }
+}
diff --git a/libjava/classpath/gnu/javax/imageio/jpeg/JPEGImageReader.java b/libjava/classpath/gnu/javax/imageio/jpeg/JPEGImageReader.java
new file mode 100644
index 000000000..5ecbe0f8c
--- /dev/null
+++ b/libjava/classpath/gnu/javax/imageio/jpeg/JPEGImageReader.java
@@ -0,0 +1,141 @@
+/* JPEGImageReader.java --
+   Copyright (C)  2006  Free Software Foundation, Inc.
+
+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.javax.imageio.jpeg;
+
+import java.io.IOException;
+import javax.imageio.*;
+import javax.imageio.spi.*;
+import javax.imageio.metadata.*;
+import javax.imageio.stream.ImageInputStream;
+import java.util.Iterator;
+import java.awt.image.BufferedImage;
+
+public class JPEGImageReader extends ImageReader
+{
+  JPEGDecoder decoder;
+
+  protected JPEGImageReader(ImageReaderSpi originatingProvider)
+  {
+    super(originatingProvider);
+    System.out.println("JPEGIMAGEREADER!!!");
+  }
+
+  // Abstract ImageReader methods.
+  public int getHeight(int imageIndex)
+    throws IOException
+  {
+    checkIndex(imageIndex);
+    decodeStream();
+    return decoder.getHeight();
+  }
+
+  public IIOMetadata getImageMetadata(int imageIndex)
+    throws IOException
+  {
+    // FIXME: handle metadata
+    checkIndex(imageIndex);
+    return null;
+  }
+
+  public Iterator getImageTypes(int imageIndex)
+    throws IOException
+  {
+    return null;
+  }
+
+  public int getNumImages(boolean allowSearch)
+    throws IOException
+  {
+    return 1;
+  }
+
+  public IIOMetadata getStreamMetadata()
+    throws IOException
+  {
+    // FIXME: handle metadata
+    return null;
+  }
+
+  public int getWidth(int imageIndex)
+    throws IOException
+  {
+    checkIndex(imageIndex);
+    decodeStream();
+    return decoder.getWidth();
+  }
+
+  public BufferedImage read(int imageIndex, ImageReadParam param)
+    throws IOException
+  {
+    checkIndex(imageIndex);
+    decodeStream();
+    return decoder.getImage();
+  }
+
+  // private helper methods
+  private void checkIndex(int imageIndex)
+    throws IndexOutOfBoundsException
+  {
+    if (imageIndex != 0)
+      throw new IndexOutOfBoundsException();
+  }
+
+  private void checkStream() throws IOException
+  {
+    if (!(input instanceof ImageInputStream))
+      throw new IllegalStateException("Input not an ImageInputStream.");
+    if(input == null)
+      throw new IllegalStateException("No input stream.");
+  }
+
+  private void decodeStream()
+    throws IOException, IIOException
+  {
+    System.out.println("DECONDING 1");
+    if (decoder != null)
+      return;
+
+    System.out.println("DECONDING 2");
+    checkStream();
+
+    System.out.println("DECONDING 3");
+    decoder = new JPEGDecoder((ImageInputStream)input);
+    System.out.println("DECONDING 4");
+    decoder.decode();
+  }
+}
diff --git a/libjava/classpath/gnu/javax/imageio/jpeg/JPEGImageReaderSpi.java b/libjava/classpath/gnu/javax/imageio/jpeg/JPEGImageReaderSpi.java
new file mode 100644
index 000000000..c45b818c7
--- /dev/null
+++ b/libjava/classpath/gnu/javax/imageio/jpeg/JPEGImageReaderSpi.java
@@ -0,0 +1,137 @@
+/* JPEGImageReaderSpi.java --
+   Copyright (C)  2006  Free Software Foundation, Inc.
+
+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.javax.imageio.jpeg;
+
+import java.io.IOException;
+import java.util.Locale;
+import javax.imageio.ImageReader;
+import javax.imageio.spi.ImageReaderSpi;
+import javax.imageio.spi.IIORegistry;
+import javax.imageio.stream.ImageInputStream;
+
+public class JPEGImageReaderSpi extends ImageReaderSpi
+{
+  static final String vendorName = "GNU";
+  static final String version = "0.1";
+  static final String readerClassName =
+    "gnu.javax.imageio.jpeg.JPEGImageReader";
+  static final String[] names = { "JPEG" };
+  static final String[] suffixes = { ".jpeg", ".jpg", ".jpe" };
+  static final String[] MIMETypes = { "image/jpeg" };
+  static final String[] writerSpiNames =
+    { "gnu.javax.imageio.jpeg.JPEGImageWriterSpi" };
+
+  static final boolean supportsStandardStreamMetadataFormat = false;
+  static final String nativeStreamMetadataFormatName = null;
+  static final String nativeStreamMetadataFormatClassName = null;
+  static final String[] extraStreamMetadataFormatNames = null;
+  static final String[] extraStreamMetadataFormatClassNames = null;
+  static final boolean supportsStandardImageMetadataFormat = false;
+  static final String nativeImageMetadataFormatName = null;
+  static final String nativeImageMetadataFormatClassName = null;
+  static final String[] extraImageMetadataFormatNames = null;
+  static final String[] extraImageMetadataFormatClassNames = null;
+
+  private static JPEGImageReaderSpi readerSpi;
+
+  public JPEGImageReaderSpi()
+  {
+    super(vendorName, version,
+          names, suffixes, MIMETypes,
+          readerClassName,
+          STANDARD_INPUT_TYPE, // Accept ImageInputStreams
+          writerSpiNames,
+          supportsStandardStreamMetadataFormat,
+          nativeStreamMetadataFormatName,
+          nativeStreamMetadataFormatClassName,
+          extraStreamMetadataFormatNames,
+          extraStreamMetadataFormatClassNames,
+          supportsStandardImageMetadataFormat,
+          nativeImageMetadataFormatName,
+          nativeImageMetadataFormatClassName,
+          extraImageMetadataFormatNames,
+          extraImageMetadataFormatClassNames);
+    System.out.println ("JPEGImageReaderSPI!!!");
+  }
+
+  public String getDescription(Locale locale)
+  {
+    return "JPEG ISO 10918-1, JFIF V1.02";
+  }
+
+  public boolean canDecodeInput(Object input)
+    throws IOException
+  {
+    if (!(input instanceof ImageInputStream))
+      return false;
+
+    ImageInputStream in = (ImageInputStream) input;
+    boolean retval;
+
+    in.mark();
+    try
+      {
+        new JPEGDecoder(in);
+        retval = true;
+      }
+    catch(JPEGException e)
+      {
+        retval = false;
+      }
+    in.reset();
+
+    return retval;
+  }
+
+  public ImageReader createReaderInstance(Object extension)
+  {
+    return new JPEGImageReader(this);
+  }
+
+  public static void registerSpis(IIORegistry reg)
+  {
+    reg.registerServiceProvider(getReaderSpi(), ImageReaderSpi.class);
+  }
+
+  public static synchronized JPEGImageReaderSpi getReaderSpi()
+  {
+    if (readerSpi == null)
+      readerSpi = new JPEGImageReaderSpi();
+    return readerSpi;
+  }
+}
diff --git a/libjava/classpath/gnu/javax/imageio/jpeg/JPEGMarker.java b/libjava/classpath/gnu/javax/imageio/jpeg/JPEGMarker.java
new file mode 100644
index 000000000..bc6350fbc
--- /dev/null
+++ b/libjava/classpath/gnu/javax/imageio/jpeg/JPEGMarker.java
@@ -0,0 +1,205 @@
+/* JPEGMarker.java --
+   Copyright (C)  2006  Free Software Foundation, Inc.
+
+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.javax.imageio.jpeg;
+
+public class JPEGMarker
+{
+  /**
+   * JFIF identifiers.
+   */
+  public final static byte JFIF_J = (byte) 0x4a;
+  public final static byte JFIF_F = (byte) 0x46;
+  public final static byte JFIF_I = (byte) 0x49;
+  public final static byte JFIF_X = (byte) 0x46;
+
+  /**
+   * JFIF extension codes.
+   */
+  public final static byte JFXX_JPEG = (byte) 0x10;
+  public final static byte JFXX_ONE_BPP = (byte) 0x11;
+  public final static byte JFXX_THREE_BPP = (byte) 0x13;
+
+  /**
+   * Marker prefix byte.
+   */
+  public final static byte XFF = (byte) 0xff;
+
+  /**
+   * Marker byte that represents a literal 0xff.
+   */
+  public final static byte X00 = (byte) 0x00;
+
+  /**
+   *  Application Reserved Keyword.
+   */
+  public final static byte APP0 = (byte) 0xe0;
+
+  public final static byte APP1 = (byte) 0xe1;
+  public final static byte APP2 = (byte) 0xe2;
+  public final static byte APP3 = (byte) 0xe3;
+  public final static byte APP4 = (byte) 0xe4;
+  public final static byte APP5 = (byte) 0xe5;
+  public final static byte APP6 = (byte) 0xe6;
+  public final static byte APP7 = (byte) 0xe7;
+  public final static byte APP8 = (byte) 0xe8;
+  public final static byte APP9 = (byte) 0xe9;
+  public final static byte APP10 = (byte) 0xea;
+  public final static byte APP11 = (byte) 0xeb;
+  public final static byte APP12 = (byte) 0xec;
+  public final static byte APP13 = (byte) 0xed;
+  public final static byte APP14 = (byte) 0xee;
+  public final static byte APP15 = (byte) 0xef;
+
+  /**
+   * Modulo Restart Interval.
+   */
+  public final static byte RST0 = (byte) 0xd0;
+
+  public final static byte RST1 = (byte) 0xd1;
+  public final static byte RST2 = (byte) 0xd2;
+  public final static byte RST3 = (byte) 0xd3;
+  public final static byte RST4 = (byte) 0xd4;
+  public final static byte RST5 = (byte) 0xd5;
+  public final static byte RST6 = (byte) 0xd6;
+  public final static byte RST7 = (byte) 0xd7;
+
+  /**
+   * Nondifferential Huffman-coding frame (baseline dct).
+   */
+  public final static byte SOF0 = (byte) 0xc0;
+
+  /**
+   * Nondifferential Huffman-coding frame (extended dct).
+   */
+  public final static byte SOF1 = (byte) 0xc1;
+
+  /**
+   * Nondifferential Huffman-coding frame (progressive dct).
+   */
+  public final static byte SOF2 = (byte) 0xc2;
+
+  /**
+   * Nondifferential Huffman-coding frame Lossless (Sequential).
+   */
+  public final static byte SOF3 = (byte) 0xc3;
+
+  /**
+   * Differential Huffman-coding frame Sequential DCT.
+   */
+  public final static byte SOF5 = (byte) 0xc5;
+
+  /**
+   * Differential Huffman-coding frame Progressive DCT.
+   */
+  public final static byte SOF6 = (byte) 0xc6;
+
+  /**
+   * Differential Huffman-coding frame lossless.
+   */
+  public final static byte SOF7 = (byte) 0xc7;
+
+  /**
+   * Nondifferential Arithmetic-coding frame (extended dct).
+   */
+  public final static byte SOF9 = (byte) 0xc9;
+
+  /**
+   * Nondifferential Arithmetic-coding frame (progressive dct).
+   */
+  public final static byte SOF10 = (byte) 0xca;
+
+  /**
+   * Nondifferential Arithmetic-coding frame (lossless).
+   */
+  public final static byte SOF11 = (byte) 0xcb;
+
+  /**
+   * Differential Arithmetic-coding frame (sequential dct).
+   */
+  public final static byte SOF13 = (byte) 0xcd;
+
+  /**
+   * Differential Arithmetic-coding frame (progressive dct).
+   */
+  public final static byte SOF14 = (byte) 0xce;
+
+  /**
+   * Differential Arithmetic-coding frame (lossless).
+   */
+  public final static byte SOF15 = (byte) 0xcf;
+
+  /**
+   * Huffman Table.
+   */
+  public final static byte DHT = (byte) 0xc4;
+
+  /**
+   * Quantization Table.
+   */
+  public final static byte DQT = (byte) 0xdb;
+
+  /**
+   * Start of Scan.
+   */
+  public final static byte SOS = (byte) 0xda;
+
+  /**
+   * Defined Restart Interval.
+   */
+  public final static byte DRI = (byte) 0xdd;
+
+  /**
+   * Comment in JPEG.
+   */
+  public final static byte COM = (byte) 0xfe;
+
+  /**
+   * Start of Image.
+   */
+  public final static byte SOI = (byte) 0xd8;
+
+  /**
+   * End of Image.
+   */
+  public final static byte EOI = (byte) 0xd9;
+
+  /**
+   * Define Number of Lines.
+   */
+  public final static byte DNL = (byte) 0xdc;
+}
diff --git a/libjava/classpath/gnu/javax/imageio/jpeg/JPEGMarkerFoundException.java b/libjava/classpath/gnu/javax/imageio/jpeg/JPEGMarkerFoundException.java
new file mode 100644
index 000000000..2e72d495b
--- /dev/null
+++ b/libjava/classpath/gnu/javax/imageio/jpeg/JPEGMarkerFoundException.java
@@ -0,0 +1,50 @@
+/* JPEGMarkerFoundException.java -- FIXME: briefly describe file purpose
+   Copyright (C) 2006 Free Software Foundation, Inc.
+
+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.javax.imageio.jpeg;
+
+import java.io.IOException;
+
+public class JPEGMarkerFoundException
+    extends IOException
+{
+  public JPEGMarkerFoundException()
+  {
+    super("");
+  }
+}
diff --git a/libjava/classpath/gnu/javax/imageio/jpeg/JPEGScan.java b/libjava/classpath/gnu/javax/imageio/jpeg/JPEGScan.java
new file mode 100644
index 000000000..e07251021
--- /dev/null
+++ b/libjava/classpath/gnu/javax/imageio/jpeg/JPEGScan.java
@@ -0,0 +1,151 @@
+/* JPEGScan.java --
+   Copyright (C)  2005  Free Software Foundation, Inc.
+
+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.javax.imageio.jpeg;
+
+import java.util.ArrayList;
+
+public class JPEGScan
+{
+  private int maxHeight = 0, maxWidth = 0, maxV = 0, maxH = 0;
+  private int numOfComponents = 0, numOfComponentBlocks = 0;
+  private ArrayList components = new ArrayList();
+
+  public JPEGScan()
+  {
+    // Nothing to do here.
+  }
+
+  public JPEGScan(int h, int w)
+  {
+    maxHeight=h;
+    maxWidth=w;
+  }
+
+  private void recalculateDimensions()
+  {
+    JPEGComponent comp;
+
+    // Compute the maximum H, maximum V factors defined in Annex A of the ISO
+    // DIS 10918-1.
+    for(int i=0; i < components.size() ; i++)
+      {
+        comp = (JPEGComponent)components.get(i);
+        if(comp.factorH > maxH)
+          maxH=comp.factorH;
+        if(comp.factorV > maxV)
+          maxV=comp.factorV;
+      }
+
+    for(int i=0; i < components.size() ; i++)
+      {
+        comp = (JPEGComponent)components.get(i);
+        comp.maxH = maxH;
+        comp.maxV = maxV;
+      }
+
+  }
+
+  public void addComponent(byte id, byte factorHorizontal, byte factorVertical,
+                           byte quantizationID)
+  {
+    JPEGComponent component = new JPEGComponent(id, factorHorizontal, factorVertical, quantizationID);
+    components.add((Object)component);
+    recalculateDimensions();
+    numOfComponents++;
+    numOfComponentBlocks += factorHorizontal*factorVertical;
+  }
+
+  public JPEGComponent getComponentByID(byte id)
+  {
+    JPEGComponent comp = (JPEGComponent)components.get(0);
+    for(int i=0; i < components.size() ; i++)
+      {
+        comp=(JPEGComponent)components.get(i);
+        if(comp.component_id==id)
+          break;
+      }
+    return(comp);
+  }
+
+  public JPEGComponent get(int id)
+  {
+    return((JPEGComponent)components.get(id));
+  }
+
+  public int getX(byte id)
+  {
+    JPEGComponent comp = getComponentByID(id);
+    return(comp.width);
+  }
+
+  public int getY(byte id)
+  {
+    JPEGComponent comp = getComponentByID(id);
+    return(comp.height);
+  }
+
+  public int getMaxV()
+  {
+    return(maxV);
+  }
+
+  public int getMaxH()
+  {
+    return(maxH);
+  }
+
+  public void setWidth(int w)
+  {
+    maxWidth=w;
+  }
+
+  public void setHeight(int h)
+  {
+    maxHeight=h;
+  }
+
+  public int size()
+  {
+    return(numOfComponents);
+  }
+
+  public int sizeComponentBlocks()
+  {
+    return(numOfComponentBlocks);
+  }
+}
diff --git a/libjava/classpath/gnu/javax/imageio/jpeg/YCbCr_ColorSpace.java b/libjava/classpath/gnu/javax/imageio/jpeg/YCbCr_ColorSpace.java
new file mode 100644
index 000000000..a3970b7fa
--- /dev/null
+++ b/libjava/classpath/gnu/javax/imageio/jpeg/YCbCr_ColorSpace.java
@@ -0,0 +1,113 @@
+/* YCbCr_ColorSpace.java --
+   Copyright (C)  2005  Free Software Foundation, Inc.
+
+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.javax.imageio.jpeg;
+
+import java.awt.color.ColorSpace;
+
+public class YCbCr_ColorSpace extends ColorSpace {
+  public YCbCr_ColorSpace() {
+    super(ColorSpace.TYPE_YCbCr, 3);
+  }
+
+  public float[] fromCIEXYZ(float[] data) {
+    return(new float[data.length]);
+  }
+
+  public float[] toCIEXYZ(float[] data) {
+    return(new float[data.length]);
+  }
+
+  public float[] fromRGB(float[] data) {
+    return(new float[data.length]);
+  }
+
+  /* YCbCr to RGB range 0 to 1 */
+  public float[] toRGB(float[] data) {
+    float[] dest = new float[3];
+
+    data[0] *= 255;
+    data[1] *= 255;
+    data[2] *= 255;
+
+    dest[0] = (float)data[0] + (float)1.402*((float)data[2]-(float)128);
+    dest[1] = (float)data[0] - (float)0.34414*((float)data[1]-(float)128) - (float)0.71414*((float)data[2]-(float)128);
+    dest[2] = (float)data[0] + (float)1.772*((float)data[1]-(float)128);
+
+    dest[0] /= 255;
+    dest[1] /= 255;
+    dest[2] /= 255;
+
+    //dest[0] = ((float)1.164*((float)data[0]*(float)255 - (float)16) + (float)1.596*((float)data[2]*(float)255 - (float)128))/(float)255;
+    //dest[1] = ((float)1.164*((float)data[0]*(float)255 - (float)16) - (float)0.813*((float)data[2]*(float)255 - (float)128) - (float)0.392*(data[1]*255 - 128))/(float)255;
+    //dest[2] = ((float)1.164*((float)data[0]*(float)255 - (float)16) + (float)2.017*((float)data[1]*(float)255 - (float)128))/(float)255;
+
+    //System.err.println("toRGB values received: 0: "+data[0]+" 1: "+data[1]+" 2: "+data[2]+" sent: 0: "+dest[0]+" 1: "+dest[1]+" 2: "+dest[2]);
+    if(dest[0] < (float)0)
+      dest[0] = 0;
+    if(dest[1] < (float)0)
+      dest[1] = 0;
+    if(dest[2] < (float)0)
+      dest[2] = 0;
+
+    if(dest[0] > (float)1)
+      dest[0] = 1;
+    if(dest[1] > (float)1)
+      dest[1] = 1;
+    if(dest[2] > (float)1)
+      dest[2] = 1;
+
+
+    return(dest);
+  }
+
+  /* RGB to YCbCr range 0-255 */
+  public static float[] toYCbCr(float[] data) {
+    float[] dest = new float[3];
+    //dest[0] = (float)0.257*data[0] + (float)0.504*data[1] + (float)0.098*data[2] + 16;
+    //dest[1] = (float)-0.148*data[0] - (float)0.291*data[1] + (float)0.439*data[2] + 128;
+    //dest[2] = (float)0.439*data[0] - (float)0.368*data[1] - (float)0.071*data[2] + 128;
+
+    dest[0] = (float)((0.299 * (float)data[0] + 0.587 * (float)data[1] + 0.114 * (float)data[2]));
+    dest[1] = 128 + (float)((-0.16874 * (float)data[0] - 0.33126 * (float)data[1] + 0.5 * (float)data[2]));
+    dest[2] = 128 + (float)((0.5 * (float)data[0] - 0.41869 * (float)data[1] - 0.08131 * (float)data[2]));
+
+
+    return(dest);
+
+  }
+}
diff --git a/libjava/classpath/gnu/javax/imageio/jpeg/ZigZag.java b/libjava/classpath/gnu/javax/imageio/jpeg/ZigZag.java
new file mode 100644
index 000000000..9aac0df40
--- /dev/null
+++ b/libjava/classpath/gnu/javax/imageio/jpeg/ZigZag.java
@@ -0,0 +1,520 @@
+/* ZigZag.java --
+   Copyright (C)  2005  Free Software Foundation, Inc.
+
+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.javax.imageio.jpeg;
+
+/**
+ * This class implements the Zig Zag Algorithm on any array with
+ * the same amount of rows and columns. It takes a matrix and in turn builds an
+ * encoded byte array (or double array) from it. The adverse is also true, this
+ * will take a byte or double array and build a matrix based on the zig zag
+ * algorithm.
+ * <p>This is used exclusively in the JPEG DCT encoding.</p>
+ */
+public class ZigZag
+{
+  public final static boolean ZIGZAG_FORWARD = true;
+  public final static boolean ZIGZAG_BACKWARD = false;
+  public final static int ZIGZAG_8X8_MAP[] =
+  {
+   0,   1,  8, 16,  9,  2,  3, 10,
+   17, 24, 32, 25, 18, 11,  4,  5,
+   12, 19, 26, 33, 40, 48, 41, 34,
+   27, 20, 13,  6,  7, 14, 21, 28,
+   35, 42, 49, 56, 57, 50, 43, 36,
+   29, 22, 15, 23, 30, 37, 44, 51,
+   58, 59, 52, 45, 38, 31, 39, 46,
+   53, 60, 61, 54, 47, 55, 62, 63
+  };
+
+  /**
+   * Encodes a matrix of equal width and height to a byte array.
+   *
+   * @param matrix
+   *
+   * @return
+   */
+  public static byte[] encode(byte[][] matrix)
+  {
+    byte[] buffer = new byte[matrix.length ^ 2];
+    boolean direction = ZigZag.ZIGZAG_FORWARD;
+    int x = 0, y = 0, index = 0;
+    for (int zigIndex = 0; zigIndex < (matrix.length * 2 - 1);
+         zigIndex++, direction = !direction)
+      {
+        if (direction == ZigZag.ZIGZAG_FORWARD)
+          {
+            while (x >= 0 && y != matrix.length)
+              {
+                if (x == matrix.length)
+                  {
+                    x--;
+                    y++;
+                  }
+                buffer[index] = matrix[x][y];
+                y++;
+                x--;
+                index++;
+              }
+            x++;
+          }
+        else
+          {
+            while (y >= 0 && x != matrix.length)
+              {
+                if (y == matrix.length)
+                  {
+                    y--;
+                    x++;
+                  }
+                buffer[index] = matrix[x][y];
+                y--;
+                x++;
+                index++;
+              }
+            y++;
+          }
+      }
+    return (buffer);
+  }
+
+  /**
+   * Encodes a matrix of equal width and height to a double array
+   *
+   * @param matrix
+   *
+   * @return
+   */
+  public static double[] encode(double[][] matrix)
+  {
+    double[] buffer = new double[matrix.length * matrix.length];
+    boolean direction = ZigZag.ZIGZAG_FORWARD;
+    int x = 0, y = 0, index = 0;
+    for (int zigIndex = 0; zigIndex < (matrix.length * 2 - 1);
+         zigIndex++, direction = !direction)
+      {
+        if (direction == ZigZag.ZIGZAG_FORWARD)
+          {
+            while (x >= 0 && y != matrix.length)
+              {
+                if (x == matrix.length)
+                  {
+                    x--;
+                    y++;
+                  }
+                buffer[index] = matrix[x][y];
+                y++;
+                x--;
+                index++;
+              }
+            x++;
+          }
+        else
+          {
+            while (y >= 0 && x != matrix.length)
+              {
+                if (y == matrix.length)
+                  {
+                    y--;
+                    x++;
+                  }
+                buffer[index] = matrix[x][y];
+                y--;
+                x++;
+                index++;
+              }
+            y++;
+          }
+      }
+    return (buffer);
+  }
+
+  /**
+   * Encodes a matrix of equal width and height to a float array
+   *
+   * @param matrix
+   *
+   * @return
+   */
+  public static float[] encode(float[][] matrix)
+  {
+    float[] buffer = new float[matrix.length * matrix.length];
+    boolean direction = ZigZag.ZIGZAG_FORWARD;
+    int x = 0, y = 0, index = 0;
+    for (int zigIndex = 0; zigIndex < (matrix.length * 2 - 1);
+         zigIndex++, direction = !direction)
+      {
+        if (direction == ZigZag.ZIGZAG_FORWARD)
+          {
+            while (x >= 0 && y != matrix.length)
+              {
+                if (x == matrix.length)
+                  {
+                    x--;
+                    y++;
+                  }
+                buffer[index] = matrix[x][y];
+                y++;
+                x--;
+                index++;
+              }
+            x++;
+          }
+        else
+          {
+            while (y >= 0 && x != matrix.length)
+              {
+                if (y == matrix.length)
+                  {
+                    y--;
+                    x++;
+                  }
+                buffer[index] = matrix[x][y];
+                y--;
+                x++;
+                index++;
+              }
+            y++;
+          }
+      }
+    return (buffer);
+  }
+
+  /**
+   * Encodes a matrix of equal width and height to a float array
+   *
+   * @param matrix
+   *
+   * @return
+   */
+  public static short[] encode(short[][] matrix)
+  {
+    short[] buffer = new short[matrix.length * matrix.length];
+    boolean direction = ZigZag.ZIGZAG_FORWARD;
+    int x = 0, y = 0, index = 0;
+    for (int zigIndex = 0; zigIndex < (matrix.length * 2 - 1);
+         zigIndex++, direction = !direction)
+      {
+        if (direction == ZigZag.ZIGZAG_FORWARD)
+          {
+            while (x >= 0 && y != matrix.length)
+              {
+                if (x == matrix.length)
+                  {
+                    x--;
+                    y++;
+                  }
+                buffer[index] = matrix[x][y];
+                y++;
+                x--;
+                index++;
+              }
+            x++;
+          }
+        else
+          {
+            while (y >= 0 && x != matrix.length)
+              {
+                if (y == matrix.length)
+                  {
+                    y--;
+                    x++;
+                  }
+                buffer[index] = matrix[x][y];
+                y--;
+                x++;
+                index++;
+              }
+            y++;
+          }
+      }
+    return (buffer);
+  }
+
+  /**
+   * Convert a double array into a matrix with the same amount of columns and
+   * rows with length sqrt(double array length)
+   *
+   * @param data
+   *
+   * @return
+   */
+  public static double[][] decode(double[] data)
+  {
+    return decode(data, (int) Math.sqrt(data.length),
+                  (int) Math.sqrt(data.length));
+  }
+
+  /**
+   * Convert a byte array into a matrix with the same amount of columns and
+   * rows with length sqrt(double array length)
+   *
+   * @param data
+   *
+   * @return
+   */
+  public static byte[][] decode(byte[] data)
+  {
+    return decode(data, (int) Math.sqrt(data.length),
+                  (int) Math.sqrt(data.length));
+  }
+
+  public static int[][] decode(int[] data)
+  {
+    return decode(data, (int) Math.sqrt(data.length),
+                  (int) Math.sqrt(data.length));
+  }
+
+  public static byte[][] decode(byte[] data, int width, int height)
+  {
+    byte[][] buffer = new byte[height][width];
+
+    for (int v = 0; v < height; v++)
+      for (int z = 0; z < width; z++)
+        buffer[v][z] = 11;
+
+    boolean dir = ZigZag.ZIGZAG_FORWARD;
+    int xindex = 0, yindex = 0, dataindex = 0;
+
+    while (xindex < width && yindex < height && dataindex < data.length)
+      {
+        buffer[yindex][xindex] = data[dataindex];
+        dataindex++;
+
+        if (dir == ZigZag.ZIGZAG_FORWARD)
+          {
+            if (yindex == 0 || xindex == (width - 1))
+              {
+                dir = ZigZag.ZIGZAG_BACKWARD;
+                if (xindex == (width - 1))
+                  yindex++;
+                else
+                  xindex++;
+              }
+            else
+              {
+                yindex--;
+                xindex++;
+              }
+          }
+        else
+          { /* Backwards */
+            if (xindex == 0 || yindex == (height - 1))
+              {
+                dir = ZigZag.ZIGZAG_FORWARD;
+                if (yindex == (height - 1))
+                  xindex++;
+                else
+                  yindex++;
+              }
+            else
+              {
+                yindex++;
+                xindex--;
+              }
+          }
+      }
+    return (buffer);
+  }
+
+  public static double[][] decode(double[] data, int width, int height)
+  {
+    double[][] buffer = new double[height][width];
+
+    for (int v = 0; v < height; v++)
+      for (int z = 0; z < width; z++)
+        buffer[v][z] = 11;
+
+    boolean dir = ZigZag.ZIGZAG_FORWARD;
+    int xindex = 0, yindex = 0, dataindex = 0;
+
+    while (xindex < width && yindex < height && dataindex < data.length)
+      {
+        buffer[yindex][xindex] = data[dataindex];
+        dataindex++;
+        System.err.println("Setting " + dataindex + " to row: " + yindex
+                           + " column: " + xindex + " yourval:"
+                           + (yindex*8+xindex));
+        if (dir == ZigZag.ZIGZAG_FORWARD)
+          {
+            if (yindex == 0 || xindex == (width - 1))
+              {
+                dir = ZigZag.ZIGZAG_BACKWARD;
+                if (xindex == (width - 1))
+                  yindex++;
+                else
+                  xindex++;
+              }
+            else
+              {
+                yindex--;
+                xindex++;
+              }
+          }
+        else
+          { /* Backwards */
+            if (xindex == 0 || yindex == (height - 1))
+              {
+                dir = ZigZag.ZIGZAG_FORWARD;
+                if (yindex == (height - 1))
+                  xindex++;
+                else
+                  yindex++;
+              }
+            else
+              {
+                yindex++;
+                xindex--;
+              }
+          }
+      }
+    return (buffer);
+  }
+
+  public static float[][] decode(float[] data, int width, int height)
+  {
+    float[][] buffer = new float[height][width];
+
+    for (int v = 0; v < height; v++)
+      for (int z = 0; z < width; z++)
+        buffer[v][z] = 11;
+
+    boolean dir = ZigZag.ZIGZAG_FORWARD;
+    int xindex = 0, yindex = 0, dataindex = 0;
+
+    while (xindex < width && yindex < height && dataindex < data.length)
+      {
+        buffer[yindex][xindex] = data[dataindex];
+        dataindex++;
+
+        if (dir == ZigZag.ZIGZAG_FORWARD)
+          {
+            if (yindex == 0 || xindex == (width - 1))
+              {
+                dir = ZigZag.ZIGZAG_BACKWARD;
+                if (xindex == (width - 1))
+                  yindex++;
+                else
+                  xindex++;
+              }
+            else
+              {
+                yindex--;
+                xindex++;
+              }
+          }
+        else
+          { /* Backwards */
+            if (xindex == 0 || yindex == (height - 1))
+              {
+                dir = ZigZag.ZIGZAG_FORWARD;
+                if (yindex == (height - 1))
+                  xindex++;
+                else
+                  yindex++;
+              }
+            else
+              {
+                yindex++;
+                xindex--;
+              }
+          }
+      }
+    return (buffer);
+  }
+
+  public static int[][] decode(int[] data, int width, int height)
+  {
+    int[][] buffer = new int[height][width];
+
+    for (int v = 0; v < height; v++)
+      for (int z = 0; z < width; z++)
+        buffer[v][z] = 11;
+
+    boolean dir = ZigZag.ZIGZAG_FORWARD;
+    int xindex = 0, yindex = 0, dataindex = 0;
+
+    while (xindex < width && yindex < height && dataindex < data.length)
+      {
+        buffer[yindex][xindex] = data[dataindex];
+        dataindex++;
+
+        if (dir == ZigZag.ZIGZAG_FORWARD)
+          {
+            if (yindex == 0 || xindex == (width - 1))
+              {
+                dir = ZigZag.ZIGZAG_BACKWARD;
+                if (xindex == (width - 1))
+                  yindex++;
+                else
+                  xindex++;
+              }
+            else
+              {
+                yindex--;
+                xindex++;
+              }
+          }
+        else
+          { /* Backwards */
+            if (xindex == 0 || yindex == (height - 1))
+              {
+                dir = ZigZag.ZIGZAG_FORWARD;
+                if (yindex == (height - 1))
+                  xindex++;
+                else
+                  yindex++;
+              }
+            else
+              {
+                yindex++;
+                xindex--;
+              }
+          }
+      }
+    return (buffer);
+  }
+
+  public static double[][] decode8x8_map(double input[])
+  {
+    double[][] output = new double[8][8];
+    for(int i=0; i < 64 ; i++)
+      output[ZIGZAG_8X8_MAP[i]/8][ZIGZAG_8X8_MAP[i]%8] = input[i];
+    return (output);
+  }
+
+}