2006-11-22 Roman Kennke <kennke@aicas.com>

	* java/awt/image/ImageFilter.java
	Reformat whole class.
	(getFilterInstance): Don't touch the consumer field. Don't check
	consumer.
	(imageComplete): Don't check consumer.
	(setColorModel): Don't check consumer.
	(setDimensions): Don't check consumer.
	(setHints): Don't check consumer.
	(setPixels): Don't check consumer.
	(setProperties): Pass the original property too.
	* java/awt/image/IndexColorModel.java
	(IndexColorModel(int,int,byte[],byte[],byte[],int)): Set the
	transparent pixel by calling the new helper method.
	(IndexColorModel(int,int,byte[],int,boolean,int)): Set the
	transparent pixel by calling the new helper method.
	(IndexColorModel(int,int,int[],int,boolean,int,int)): Set the
	transparent pixel by calling the new helper method.
	(coerceData): Removed. This is not needed.
	(getAlpha): Simply return value from color map. The transparent
	pixel has to be there.
	(setTransparentPixel): New helper method. Inserts the transparent
	pixel.
	* java/awt/image/RGBImageFilter.java
	Reformat whole class.
	(convertColorModelToDefault): Removed. No longer needed.
	(filterIndexColorModel): Don't handle transparent pixels
	separately.
	(filterRGBPixels): Set pixels on consumer already.
	(makeColor): Removed. No longer needed.
	* java/awt/image/ReplicateScaleFilter.java
	(replicatePixels): Removed.
	(setDimension): Correctly compute destination size, avoid double
	calculations.
	(setPixels): Avoid double calculations. Fixed some boundary cases.
	(setupSources): New helper method.
	* java/awt/image/SampleModel.java
	(setDataElements): Also handle TYPE_SHORT, TYPE_FLOAT
	and TYPE_DOUBLE.
	* java/awt/image/SinglePixelPackedSampleModel.java
	(setDataElements(int,int,int,int,Object,DataBuffer)): Removed.
	This is not needed as the superclass already copies line
	by line.
	(setDataElements(int,int,Object,DataBuffer)): Simplified code,
	removed some checks that the RI also doesn't perform. Call
	DataBuffer.setElem().

7 files changed, 569 insertions, 597 deletions

diff --git a/ChangeLog b/ChangeLog
index a8769aca7..e2fd016d0 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,53 @@
 2006-11-22  Roman Kennke  <kennke@aicas.com>
 
+	* java/awt/image/ImageFilter.java
+	Reformat whole class.
+	(getFilterInstance): Don't touch the consumer field. Don't check
+	consumer.
+	(imageComplete): Don't check consumer.
+	(setColorModel): Don't check consumer.
+	(setDimensions): Don't check consumer.
+	(setHints): Don't check consumer.
+	(setPixels): Don't check consumer.
+	(setProperties): Pass the original property too.
+	* java/awt/image/IndexColorModel.java
+	(IndexColorModel(int,int,byte[],byte[],byte[],int)): Set the
+	transparent pixel by calling the new helper method.
+	(IndexColorModel(int,int,byte[],int,boolean,int)): Set the
+	transparent pixel by calling the new helper method.
+	(IndexColorModel(int,int,int[],int,boolean,int,int)): Set the
+	transparent pixel by calling the new helper method.
+	(coerceData): Removed. This is not needed.
+	(getAlpha): Simply return value from color map. The transparent
+	pixel has to be there.
+	(setTransparentPixel): New helper method. Inserts the transparent
+	pixel.
+	* java/awt/image/RGBImageFilter.java
+	Reformat whole class.
+	(convertColorModelToDefault): Removed. No longer needed.
+	(filterIndexColorModel): Don't handle transparent pixels
+	separately.
+	(filterRGBPixels): Set pixels on consumer already.
+	(makeColor): Removed. No longer needed.
+	* java/awt/image/ReplicateScaleFilter.java
+	(replicatePixels): Removed.
+	(setDimension): Correctly compute destination size, avoid double
+	calculations.
+	(setPixels): Avoid double calculations. Fixed some boundary cases.
+	(setupSources): New helper method.
+	* java/awt/image/SampleModel.java
+	(setDataElements): Also handle TYPE_SHORT, TYPE_FLOAT
+	and TYPE_DOUBLE.
+	* java/awt/image/SinglePixelPackedSampleModel.java
+	(setDataElements(int,int,int,int,Object,DataBuffer)): Removed.
+	This is not needed as the superclass already copies line
+	by line.
+	(setDataElements(int,int,Object,DataBuffer)): Simplified code,
+	removed some checks that the RI also doesn't perform. Call
+	DataBuffer.setElem().
+
+2006-11-22  Roman Kennke  <kennke@aicas.com>
+
 	* java/awt/text/TextLayout.java
 	(getLogicalRangesForVisualSelection): Implemented.
 
diff --git a/java/awt/image/ImageFilter.java b/java/awt/image/ImageFilter.java
index c39c4a428..d5eb8bf47 100644
--- a/java/awt/image/ImageFilter.java
+++ b/java/awt/image/ImageFilter.java
@@ -49,180 +49,179 @@ import java.util.Hashtable;
  */
 public class ImageFilter implements ImageConsumer, Cloneable
 {
-    /**
-     * The consumer this filter is filtering an image data stream for.
-     * It is initialized in the method <code>getFilterInstance</code>.  
-     */
-    protected ImageConsumer consumer = null;
-
-    /**
-     * The <code>ImageConsumer</code> can use this method to request
-     * the pixels be delivered in top-down, left-right order.  
-     * <br> 
-     * The filter can respond in three different ways.  
-     * <ul>
-     *   <li>The default behavior is to forward the request to the 
-     *       <code>ImageProducer</code> 
-     *       using the method <code>requestTopDownLeftRightResend</code>
-     *       and using the filter as the consumer.</li>
-     *   <li>The filter has the pixels and can retransmit them in the
-     *       top-down, left-right order.</li>
-     *   <li>The filter can do nothing when this method is called.</li>
-     * </ul>
-     */
-    public void resendTopDownLeftRight(ImageProducer ip)
-    {
-	ip.requestTopDownLeftRightResend(this);
-    }
-
-    /**
-     * By default, returns a shallow copy of the object created by
-     * <code>Object.clone()</code> 
-     *
-     * @see java.lang.Object#clone ()
-     */
-    public Object clone()
-    {
-      try
-        {
-          return super.clone();
-        }
-      catch (CloneNotSupportedException e)
-        {
-          // This should never happen as this class implements the
-          // Cloneable interface.
-          throw new InternalError ();
-        }
-    }
-
-    /**
-     * This is the only method which can set the
-     * <code>ImageConsumer</code> for this filter.  By default a clone
-     * of this filter with the appropriate consumer set is returned.  
-     *
-     * @see #clone ()
-     */
-    public ImageFilter getFilterInstance(ImageConsumer ic)
-    {
-	if ( ic == null )
-	    throw new IllegalArgumentException("null argument for ImageFilter.getFilterInstance(ImageConsumer)");
-
-	consumer = ic;
-	ImageFilter f = (ImageFilter)clone();
-	consumer = null;
-	return f;
-    }
-
-    /**
-     * An <code>ImageProducer</code> indicates the size of the image
-     * being produced using this method.  A filter can override this 
-     * method to intercept these calls from the producer in order to
-     * change either the width or the height before in turn calling
-     * the consumer's <code>setDimensions</code> method.
-     * 
-     * @param width the width of the image
-     * @param height the height of the image 
-     */
-    public void setDimensions(int width, int height)
-    {
-      if (consumer != null)
-	consumer.setDimensions(width, height);
-    }
-
-    /**
-     * An <code>ImageProducer</code> can set a list of properties
-     * associated with this image by using this method.
-     *
-     * @param props the list of properties associated with this image 
-     */
-    public void setProperties(Hashtable props)
-    {
-	props.put("filters", "ImageFilter");
-	if (consumer != null)
-	  consumer.setProperties(props);
-    }
-
-    /**
-     * Override this method to process calls to this method from the
-     * <code>ImageProducer</code>.  By default the <code>setColorModel</code>
-     * method of the consumer is called with the specified <code>model</code>.
-     *
-     * @param model the color model to be used most often by setPixels
-     * @see ColorModel */
-    public void setColorModel(ColorModel model)
-    {
-      if (consumer != null)
-	consumer.setColorModel(model);
-    }
-
-    /**
-     * The <code>ImageProducer</code> should call this method with a
-     * bit mask of hints from any of <code>RANDOMPIXELORDER</code>,
-     * <code>TOPDOWNLEFTRIGHT</code>, <code>COMPLETESCANLINES</code>,
-     * <code>SINGLEPASS</code>, <code>SINGLEFRAME</code> from the 
-     * <code>ImageConsumer</code> interface.
-     * 
-     * @param flags a bit mask of hints
-     * @see ImageConsumer
-     */
-    public void setHints(int flags)
-    {
-      if (consumer != null)
-	consumer.setHints(flags);
-    }
-
-    /**
-     * This function delivers a rectangle of pixels where any
-     * pixel(m,n) is stored in the array as a <code>byte</code> at
-     * index (n * scansize + m + offset).  
-     *
-     * @param x the x coordinate of the rectangle
-     * @param y the y coordinate of the rectangle
-     * @param w the width of the rectangle
-     * @param h the height of the rectangle
-     * @param model the <code>ColorModel</code> used to translate the pixels
-     * @param pixels the array of pixel values
-     * @param offset the index of the first pixels in the <code>pixels</code> array
-     * @param scansize the width to use in extracting pixels from the <code>pixels</code> array
-     */
-    public void setPixels(int x, int y, int w, int h, 
-	   ColorModel model, byte[] pixels, int offset, int scansize)
-    {
-      if (consumer != null)
-	consumer.setPixels(x, y, w, h, model, pixels, offset, scansize);
-    }
-
-    /**
-     * This function delivers a rectangle of pixels where any
-     * pixel(m,n) is stored in the array as an <code>int</code> at
-     * index (n * scansize + m + offset).  
-     *
-     * @param x the x coordinate of the rectangle
-     * @param y the y coordinate of the rectangle
-     * @param w the width of the rectangle
-     * @param h the height of the rectangle
-     * @param model the <code>ColorModel</code> used to translate the pixels
-     * @param pixels the array of pixel values
-     * @param offset the index of the first pixels in the <code>pixels</code> array
-     * @param scansize the width to use in extracting pixels from the <code>pixels</code> array
-     */
-    public void setPixels(int x, int y, int w, int h, 
-           ColorModel model, int[] pixels, int offset, int scansize)
-    {
-      if (consumer != null)
-	consumer.setPixels(x, y, w, h, model, pixels, offset, scansize);
-    }
-
-    /**
-     * The <code>ImageProducer</code> calls this method to indicate a
-     * single frame or the entire image is complete.  The method is
-     * also used to indicate an error in loading or producing the
-     * image.  
-     */
-    public void imageComplete(int status)
-    {
-      if (consumer != null)
-	consumer.imageComplete(status);
-    }
+  /**
+   * The consumer this filter is filtering an image data stream for.
+   * It is initialized in the method <code>getFilterInstance</code>.  
+   */
+  protected ImageConsumer consumer = null;
+
+  /**
+   * The <code>ImageConsumer</code> can use this method to request
+   * the pixels be delivered in top-down, left-right order.  
+   * <br> 
+   * The filter can respond in three different ways.  
+   * <ul>
+   *   <li>The default behavior is to forward the request to the 
+   *       <code>ImageProducer</code> 
+   *       using the method <code>requestTopDownLeftRightResend</code>
+   *       and using the filter as the consumer.</li>
+   *   <li>The filter has the pixels and can retransmit them in the
+   *       top-down, left-right order.</li>
+   *   <li>The filter can do nothing when this method is called.</li>
+   * </ul>
+   */
+  public void resendTopDownLeftRight(ImageProducer ip)
+  {
+    ip.requestTopDownLeftRightResend(this);
+  }
+
+  /**
+   * By default, returns a shallow copy of the object created by
+   * <code>Object.clone()</code> 
+   *
+   * @see java.lang.Object#clone ()
+   */
+  public Object clone()
+  {
+    try
+      {
+        return super.clone();
+      }
+    catch (CloneNotSupportedException e)
+      {
+        // This should never happen as this class implements the
+        // Cloneable interface.
+        throw new InternalError ();
+      }
+  }
+
+  /**
+   * This is the only method which can set the
+   * <code>ImageConsumer</code> for this filter.  By default a clone
+   * of this filter with the appropriate consumer set is returned.  
+   *
+   * @see #clone ()
+   */
+  public ImageFilter getFilterInstance(ImageConsumer ic)
+  {
+    ImageFilter f = (ImageFilter)clone();
+    f.consumer = ic;
+    return f;
+  }
+
+  /**
+   * An <code>ImageProducer</code> indicates the size of the image
+   * being produced using this method.  A filter can override this 
+   * method to intercept these calls from the producer in order to
+   * change either the width or the height before in turn calling
+   * the consumer's <code>setDimensions</code> method.
+   * 
+   * @param width the width of the image
+   * @param height the height of the image 
+   */
+  public void setDimensions(int width, int height)
+  {
+    consumer.setDimensions(width, height);
+  }
+
+  /**
+   * An <code>ImageProducer</code> can set a list of properties
+   * associated with this image by using this method.
+   *
+   * @param props the list of properties associated with this image 
+   */
+  public void setProperties(Hashtable props)
+  {
+    Hashtable copy = (Hashtable) props.clone();
+    Object o = copy.get("filters");
+    if (o == null)
+      copy.put("filters", toString());
+    else if (o instanceof String)
+      copy.put("filters", ((String) o) + toString());
+
+    consumer.setProperties(copy);
+  }
+
+  /**
+   * Override this method to process calls to this method from the
+   * <code>ImageProducer</code>.  By default the <code>setColorModel</code>
+   * method of the consumer is called with the specified <code>model</code>.
+   *
+   * @param model the color model to be used most often by setPixels
+   *
+   * @see ColorModel
+   */
+  public void setColorModel(ColorModel model)
+  {
+    consumer.setColorModel(model);
+  }
+
+  /**
+   * The <code>ImageProducer</code> should call this method with a
+   * bit mask of hints from any of <code>RANDOMPIXELORDER</code>,
+   * <code>TOPDOWNLEFTRIGHT</code>, <code>COMPLETESCANLINES</code>,
+   * <code>SINGLEPASS</code>, <code>SINGLEFRAME</code> from the 
+   * <code>ImageConsumer</code> interface.
+   * 
+   * @param flags a bit mask of hints
+   * @see ImageConsumer
+   */
+  public void setHints(int flags)
+  {
+    consumer.setHints(flags);
+  }
+
+  /**
+   * This function delivers a rectangle of pixels where any
+   * pixel(m,n) is stored in the array as a <code>byte</code> at
+   * index (n * scansize + m + offset).  
+   *
+   * @param x the x coordinate of the rectangle
+   * @param y the y coordinate of the rectangle
+   * @param w the width of the rectangle
+   * @param h the height of the rectangle
+   * @param model the <code>ColorModel</code> used to translate the pixels
+   * @param pixels the array of pixel values
+   * @param offset the index of the first pixels in the <code>pixels</code> array
+   * @param scansize the width to use in extracting pixels from the <code>pixels</code> array
+   */
+  public void setPixels(int x, int y, int w, int h, 
+                        ColorModel model, byte[] pixels, int offset,
+                        int scansize)
+  {
+    consumer.setPixels(x, y, w, h, model, pixels, offset, scansize);
+  }
+
+  /**
+   * This function delivers a rectangle of pixels where any
+   * pixel(m,n) is stored in the array as an <code>int</code> at
+   * index (n * scansize + m + offset).  
+   *
+   * @param x the x coordinate of the rectangle
+   * @param y the y coordinate of the rectangle
+   * @param w the width of the rectangle
+   * @param h the height of the rectangle
+   * @param model the <code>ColorModel</code> used to translate the pixels
+   * @param pixels the array of pixel values
+   * @param offset the index of the first pixels in the <code>pixels</code> array
+   * @param scansize the width to use in extracting pixels from the <code>pixels</code> array
+   */
+  public void setPixels(int x, int y, int w, int h, 
+                        ColorModel model, int[] pixels, int offset,
+                        int scansize)
+  {
+    consumer.setPixels(x, y, w, h, model, pixels, offset, scansize);
+  }
+
+  /**
+   * The <code>ImageProducer</code> calls this method to indicate a
+   * single frame or the entire image is complete.  The method is
+   * also used to indicate an error in loading or producing the
+   * image.  
+   */
+  public void imageComplete(int status)
+  {
+    consumer.imageComplete(status);
+  }
 }
 
diff --git a/java/awt/image/IndexColorModel.java b/java/awt/image/IndexColorModel.java
index a16c01b69..46879cc98 100644
--- a/java/awt/image/IndexColorModel.java
+++ b/java/awt/image/IndexColorModel.java
@@ -134,10 +134,6 @@ public class IndexColorModel extends ColorModel
     if (size < 1)
       throw new IllegalArgumentException("size < 1");
     map_size = size;
-    if (0 <= trans && trans < size) {
-      this.trans = trans;
-      transparency = BITMASK;
-    }
     rgb = new int[size];
     for (int i = 0; i < size; i++)
       {
@@ -146,6 +142,9 @@ public class IndexColorModel extends ColorModel
                   | ((greens[i] & 0xff) << 8)
                   | (blues[i] & 0xff));
       }
+
+    setTransparentPixel(trans);
+
     // Generate a bigint with 1's for every pixel
     validBits = validBits.setBit(size).subtract(BigInteger.ONE);
   }
@@ -275,8 +274,6 @@ public class IndexColorModel extends ColorModel
       throw new IllegalArgumentException("size < 1");
     map_size = size;
     opaque = !hasAlpha;
-    if (0 <= trans && trans < size)
-      this.trans = trans;
 
     rgb = new int[size];
     if (hasAlpha)
@@ -318,6 +315,8 @@ public class IndexColorModel extends ColorModel
 	transparency = BITMASK;
     }
 
+    setTransparentPixel(trans);
+
     // Generate a bigint with 1's for every pixel
     validBits = validBits.setBit(size).subtract(BigInteger.ONE);
   }
@@ -361,9 +360,6 @@ public class IndexColorModel extends ColorModel
       throw new IllegalArgumentException("size < 1");
     map_size = size;
     opaque = !hasAlpha;
-    if (0 <= trans && trans < size)
-      this.trans = trans;
-
     rgb = new int[size];
     if (!hasAlpha)
       for (int i = 0; i < size; i++)
@@ -371,6 +367,8 @@ public class IndexColorModel extends ColorModel
     else
       System.arraycopy(cmap, start, rgb, 0, size);
 
+    setTransparentPixel(trans);
+
     // Generate a bigint with 1's for every pixel
     validBits = validBits.setBit(size).subtract(BigInteger.ONE);
   }
@@ -584,12 +582,7 @@ public class IndexColorModel extends ColorModel
    */
   public final int getAlpha(int pixel)
   {
-    if (opaque && pixel != trans) 
-      return 255;
-    if ((pixel == trans && trans != -1) || pixel >= map_size)
-      return 0;
-
-    return (0xFF000000 & rgb[pixel]) >> 24;
+    return (rgb[pixel] >> 24) & 0xFF;
   }
 
   /**
@@ -694,23 +687,6 @@ public class IndexColorModel extends ColorModel
 
     return im;
   }
-  
-  public ColorModel coerceData (WritableRaster raster,
-                                boolean isAlphaPremultiplied)
-  {
-    if (this.isAlphaPremultiplied == isAlphaPremultiplied || !hasAlpha())
-      return this;
-        
-    /* TODO: provide better implementation based on the
-       assumptions we can make due to the specific type of the
-       color model. */
-    super.coerceDataWorker(raster, isAlphaPremultiplied);
-    
-    ColorModel cm = new IndexColorModel(pixel_bits, map_size, rgb, 0, hasAlpha, trans,
-                                        transferType);
-    cm.isAlphaPremultiplied = !(cm.isAlphaPremultiplied);
-    return cm;
-  }
 
   /**
    * Creates a {@link SampleModel} that is compatible to this color model.
@@ -731,4 +707,23 @@ public class IndexColorModel extends ColorModel
       sm = new ComponentSampleModel(transferType, w, h, 1, w, new int[]{0});
     return sm;
   }
+
+  /**
+   * Sets the transparent pixel. This is called by the various constructors.
+   *
+   * @param t the transparent pixel
+   */
+  private void setTransparentPixel(int t)
+  {
+    if (t >= 0 && t < map_size)
+      {
+        rgb[t] &= 0xffffff; // Make the value transparent.
+        trans = t;
+        if (transparency == OPAQUE)
+          {
+            transparency = BITMASK;
+            hasAlpha = true;
+          }
+      }
+  }
 }
diff --git a/java/awt/image/RGBImageFilter.java b/java/awt/image/RGBImageFilter.java
index ecfed0674..c777fecd9 100644
--- a/java/awt/image/RGBImageFilter.java
+++ b/java/awt/image/RGBImageFilter.java
@@ -46,228 +46,220 @@ package java.awt.image;
  */
 public abstract class RGBImageFilter extends ImageFilter
 {
-    protected ColorModel origmodel;
+  protected ColorModel origmodel;
 
-    protected ColorModel newmodel;
+  protected ColorModel newmodel;
     
-    /**
-       Specifies whether to apply the filter to the index entries of the 
-       IndexColorModel. Subclasses should set this to true if the filter 
-       does not depend on the pixel's coordinate.
-     */
-    protected boolean canFilterIndexColorModel = false;
+  /**
+   * Specifies whether to apply the filter to the index entries of the
+   * IndexColorModel. Subclasses should set this to true if the filter
+   * does not depend on the pixel's coordinate.
+   */
+  protected boolean canFilterIndexColorModel = false;
 
-    /**
-       Construct new RGBImageFilter.
-     */
-    public RGBImageFilter() 
-    {
-    }
+  /**
+   * Construct new RGBImageFilter.
+   */
+  public RGBImageFilter() 
+  {
+  }
 
-    /**
-     * Sets the ColorModel used to filter with. If the specified ColorModel is IndexColorModel 
-     * and canFilterIndexColorModel is true, we subsitute the ColorModel for a filtered one
-     * here and in setPixels whenever the original one appears. Otherwise overrides the default
-     * ColorModel of ImageProducer and specifies the default RGBColorModel
-     *
-     * @param model the color model to be used most often by setPixels
-     * @see ColorModel */
-    public void setColorModel(ColorModel model) 
-    {
-	origmodel = model;
-	newmodel = model;
+  /**
+   * Sets the ColorModel used to filter with. If the specified ColorModel is
+   * IndexColorModel and canFilterIndexColorModel is true, we subsitute the
+   * ColorModel for a filtered one here and in setPixels whenever the original
+   * one appears. Otherwise overrides the default ColorModel of ImageProducer
+   * and specifies the default RGBColorModel
+   *
+   * @param model the color model to be used most often by setPixels
+   *
+   * @see ColorModel
+   */
+  public void setColorModel(ColorModel model) 
+  {
+    if ((model instanceof IndexColorModel) && canFilterIndexColorModel)
+      {
+        ColorModel newCM = filterIndexColorModel((IndexColorModel) model);
+        substituteColorModel(model, newCM);
+        consumer.setColorModel(newmodel);
+      }
+    else
+      {
+        consumer.setColorModel(ColorModel.getRGBdefault());
+      }
+  }
 
-	if( ( model instanceof IndexColorModel) && canFilterIndexColorModel  ) {
-		newmodel = filterIndexColorModel( (IndexColorModel) model );
-		if (consumer != null)
-		  consumer.setColorModel(newmodel);
-	    }
-	else {
-	  if (consumer != null)
-	    consumer.setColorModel(ColorModel.getRGBdefault());
-	}
-    }
-    
-    /**
-       Registers a new ColorModel to subsitute for the old ColorModel when 
-       setPixels encounters the a pixel with the old ColorModel. The pixel 
-       remains unchanged except for a new ColorModel.
-       
-       @param oldcm the old ColorModel
-       @param newcm the new ColorModel
-     */
-    public void substituteColorModel(ColorModel oldcm,
-				     ColorModel newcm)
-    {
-	origmodel = oldcm;
-	newmodel = newcm;
-    }
-
-    /**
-       Filters an IndexColorModel through the filterRGB function. Uses
-       coordinates of -1 to indicate its filtering an index and not a pixel.
-
-       @param icm an IndexColorModel to filter
-     */
-    public IndexColorModel filterIndexColorModel(IndexColorModel icm) 
-    {
-	int len = icm.getMapSize(), rgb;
-	byte reds[] = new byte[len], greens[] = new byte[len], blues[] = new byte[len], alphas[]  = new byte[len];
-	
-	icm.getAlphas( alphas );
-	icm.getReds( reds );
-	icm.getGreens( greens );
-	icm.getBlues( blues );
-
-	for( int i = 0; i < len; i++ )
-	    {
-		rgb = filterRGB( -1, -1, makeColor ( alphas[i], reds[i], greens[i], blues[i] ) );
-		alphas[i] = (byte)(( 0xff000000 & rgb ) >> 24);
-		reds[i] = (byte)(( 0xff0000 & rgb ) >> 16);
-		greens[i] = (byte)(( 0xff00 & rgb ) >> 8);
-		blues[i] = (byte)(0xff & rgb);
-	    }
-	return new IndexColorModel( icm.getPixelSize(), len, reds, greens, blues, alphas );
-    }
-
-    private int makeColor( byte a, byte r, byte g, byte b )
-    {
-	return ( 0xff000000 & (a << 24) | 0xff0000 & (r << 16) | 0xff00 & (g << 8) | 0xff & b ); 
-    }
-
-    /**
-       This functions filters a set of RGB pixels through filterRGB.
-
-       @param x the x coordinate of the rectangle
-       @param y the y coordinate of the rectangle
-       @param w the width of the rectangle
-       @param h the height of the rectangle
-       @param pixels the array of pixel values
-       @param offset the index of the first pixels in the <code>pixels</code> array
-       @param scansize the width to use in extracting pixels from the <code>pixels</code> array
-    */
-    public void filterRGBPixels(int x, int y, int w, int h, int[] pixels,
-				int offset, int scansize)
-    {
-      for (int yp = 0; yp < h; yp++)
-	{
-	  for (int xp = 0; xp < w; xp++)
-	    {
-	      pixels[offset + xp] = filterRGB(xp + x, yp + y, pixels[offset + xp]);
-	    }
-	  offset += scansize;
-	}
-    }
-
-
-    /**
-     * If the ColorModel is the same ColorModel which as already converted 
-     * then it converts it the converted ColorModel. Otherwise it passes the 
-     * array of pixels through filterRGBpixels.
-     *
-     * @param x the x coordinate of the rectangle
-     * @param y the y coordinate of the rectangle
-     * @param w the width of the rectangle
-     * @param h the height of the rectangle
-     * @param model the <code>ColorModel</code> used to translate the pixels
-     * @param pixels the array of pixel values
-     * @param offset the index of the first pixels in the <code>pixels</code> array
-     * @param scansize the width to use in extracting pixels from the <code>pixels</code> array
-     */
-    public void setPixels(int x, int y, int w, int h, 
-                          ColorModel model, byte[] pixels,
-                          int offset, int scansize)
-    {
-	if(model == origmodel && (model instanceof IndexColorModel) && canFilterIndexColorModel)
-	{
-	  if (consumer != null)
-	    consumer.setPixels(x, y, w, h, newmodel, pixels, offset, scansize);
-	}
-	else
-	{
-	    int intPixels[] =
-		convertColorModelToDefault( x, y, w, h, model, pixels, offset, scansize );
-	    filterRGBPixels( x, y, w, h, intPixels, offset, scansize );
-	    if (consumer != null)
-	      consumer.setPixels(x, y, w, h, ColorModel.getRGBdefault(), intPixels, offset, scansize);
-	}
-    }
-
-    /**
-     * This function delivers a rectangle of pixels where any
-     * pixel(m,n) is stored in the array as an <code>int</code> at
-     * index (n * scansize + m + offset).  
-     *
-     * @param x the x coordinate of the rectangle
-     * @param y the y coordinate of the rectangle
-     * @param w the width of the rectangle
-     * @param h the height of the rectangle
-     * @param model the <code>ColorModel</code> used to translate the pixels
-     * @param pixels the array of pixel values
-     * @param offset the index of the first pixels in the <code>pixels</code> array
-     * @param scansize the width to use in extracting pixels from the <code>pixels</code> array
-     */
-    public void setPixels(int x, int y, int w, int h, 
-                          ColorModel model, int[] pixels,
-                          int offset, int scansize)
-    {
-	if(model == origmodel && (model instanceof IndexColorModel) && canFilterIndexColorModel)
-	{
-	  if (consumer != null)
-	    consumer.setPixels(x, y, w, h, newmodel, pixels, offset, scansize);
-	}
-	else
-	{
-	    //FIXME: Store the filtered pixels in a separate temporary buffer?
-	  convertColorModelToDefault( x, y, w, h, model, pixels, offset, scansize );
-	  filterRGBPixels( x, y, w, h, pixels, offset, scansize );
-	  if (consumer != null)
-	    consumer.setPixels(x, y, w, h, ColorModel.getRGBdefault(), pixels, offset, scansize);
-	}
-    }
-
-    private int[] convertColorModelToDefault(int x, int y, int w, int h, 
-                                            ColorModel model, byte pixels[],
-                                            int offset, int scansize)
-    {
-	int intPixels[] = new int[pixels.length];
-	for (int i = 0; i < pixels.length; i++)
-	    intPixels[i] = makeColorbyDefaultCM(model, pixels[i]);
-	return intPixels;
-    }
+  /**
+   * Registers a new ColorModel to subsitute for the old ColorModel when 
+   * setPixels encounters the a pixel with the old ColorModel. The pixel 
+   * remains unchanged except for a new ColorModel.
+   * 
+   * @param oldcm the old ColorModel
+   * @param newcm the new ColorModel
+   */
+  public void substituteColorModel(ColorModel oldcm, ColorModel newcm)
+  {
+    origmodel = oldcm;
+    newmodel = newcm;
+  }
 
-    private void convertColorModelToDefault(int x, int y, int w, int h, 
-                                            ColorModel model, int pixels[],
-                                            int offset, int scansize)
-    {
-	for (int i = 0; i < pixels.length; i++)
-	    pixels[i] = makeColorbyDefaultCM(model, pixels[i]);
-    }
+  /**
+   * Filters an IndexColorModel through the filterRGB function. Uses
+   * coordinates of -1 to indicate its filtering an index and not a pixel.
+   *
+   * @param icm an IndexColorModel to filter
+   */
+  public IndexColorModel filterIndexColorModel(IndexColorModel icm) 
+  {
+    int len = icm.getMapSize();
+    byte[] reds = new byte[len];
+    byte[] greens = new byte[len];
+    byte[] blues = new byte[len];
+    byte[] alphas = new byte[len];
 
-    private int makeColorbyDefaultCM(ColorModel model, byte rgb) 
-    {
-	return makeColor( model.getAlpha( rgb ) * 4, model.getRed( rgb ) * 4, model.getGreen( rgb ) * 4, model.getBlue( rgb ) * 4 );
-    }
+    icm.getAlphas( alphas );
+    icm.getReds( reds );
+    icm.getGreens( greens );
+    icm.getBlues( blues );
 
-    private int makeColorbyDefaultCM(ColorModel model, int rgb) 
-    {
-	return makeColor( model.getAlpha( rgb ), model.getRed( rgb ), model.getGreen( rgb ), model.getBlue( rgb ) );
-    }
+    int transparent = icm.getTransparentPixel();
+    boolean needAlpha = false;
+    for( int i = 0; i < len; i++ )
+      {
+        int rgb = filterRGB(-1, -1, icm.getRGB(i));
+        alphas[i] = (byte) (rgb >> 24);
+        if (alphas[i] != ((byte) 0xff) && i != transparent)
+          needAlpha = true;
+        reds[i] = (byte) (rgb >> 16);
+        greens[i] = (byte) (rgb >> 8);
+        blues[i] = (byte) (rgb);
+      }
+    IndexColorModel newIcm;
+    if (needAlpha)
+      newIcm = new IndexColorModel(icm.getPixelSize(), len, reds, greens,
+                                   blues, alphas);
+    else
+      newIcm = new IndexColorModel(icm.getPixelSize(), len, reds, greens,
+                                   blues, transparent);
+    return newIcm;
+  }
 
-    private int makeColor( int a, int r, int g, int b )
-    {
-	return (int)( 0xff000000 & (a << 24) | 0xff0000 & (r << 16) | 0xff00 & (g << 8) | 0xff & b ); 
-    }
+  /**
+   * This functions filters a set of RGB pixels through filterRGB.
+   *
+   * @param x the x coordinate of the rectangle
+   * @param y the y coordinate of the rectangle
+   * @param w the width of the rectangle
+   * @param h the height of the rectangle
+   * @param pixels the array of pixel values
+   * @param offset the index of the first pixels in the
+   *        <code>pixels</code> array
+   * @param scansize the width to use in extracting pixels from the
+   *        <code>pixels</code> array
+   */
+  public void filterRGBPixels(int x, int y, int w, int h, int[] pixels,
+                              int offset, int scansize)
+  {
+    int index = offset;
+    for (int yp = 0; yp < h; yp++)
+      {
+        for (int xp = 0; xp < w; xp++)
+          {
+            pixels[index] = filterRGB(xp + x, yp + y, pixels[index]);
+            index++;
+          }
+        index += scansize - w;
+      }
+    consumer.setPixels(x, y, w, h, ColorModel.getRGBdefault(), pixels, offset,
+                       scansize);
+  }
 
+  /**
+   * If the ColorModel is the same ColorModel which as already converted 
+   * then it converts it the converted ColorModel. Otherwise it passes the 
+   * array of pixels through filterRGBpixels.
+   *
+   * @param x the x coordinate of the rectangle
+   * @param y the y coordinate of the rectangle
+   * @param w the width of the rectangle
+   * @param h the height of the rectangle
+   * @param model the <code>ColorModel</code> used to translate the pixels
+   * @param pixels the array of pixel values
+   * @param offset the index of the first pixels in the <code>pixels</code>
+   *        array
+   * @param scansize the width to use in extracting pixels from the
+   *        <code>pixels</code> array
+   */
+  public void setPixels(int x, int y, int w, int h, ColorModel model,
+                        byte[] pixels, int offset, int scansize)
+  {
+    if (model == origmodel)
+      {
+        consumer.setPixels(x, y, w, h, newmodel, pixels, offset, scansize);
+      }
+    else
+      {
+        int[] filtered = new int[w];
+        int index = offset;
+        for (int yp = 0; yp < h; yp++)
+          {
+            for (int xp = 0; xp < w; xp++)
+              {
+                filtered[xp] = model.getRGB((pixels[index] & 0xff));
+                index++;
+              }
+            index += scansize - w;
+            filterRGBPixels(x, y + yp, w, 1, filtered, 0, w);
+          }
+      }
+  }
 
-    /**
-       Filters a single pixel from the default ColorModel.
+  /**
+   * This function delivers a rectangle of pixels where any
+   * pixel(m,n) is stored in the array as an <code>int</code> at
+   * index (n * scansize + m + offset).  
+   *
+   * @param x the x coordinate of the rectangle
+   * @param y the y coordinate of the rectangle
+   * @param w the width of the rectangle
+   * @param h the height of the rectangle
+   * @param model the <code>ColorModel</code> used to translate the pixels
+   * @param pixels the array of pixel values
+   * @param offset the index of the first pixels in the <code>pixels</code>
+   *        array
+   * @param scansize the width to use in extracting pixels from the
+   *        <code>pixels</code> array
+   */
+  public void setPixels(int x, int y, int w, int h, ColorModel model,
+                        int[] pixels, int offset, int scansize)
+  {
+    if (model == origmodel)
+      {
+        consumer.setPixels(x, y, w, h, newmodel, pixels, offset, scansize);
+      }
+    else
+      {
+        int[] filtered = new int[w];
+        int index = offset;
+        for (int yp = 0; yp < h; yp++)
+          {
+            for (int xp = 0; xp < w; xp++)
+              {
+                filtered[xp] = model.getRGB((pixels[index] & 0xff));
+                index++;
+              }
+            index += scansize - w;
+            filterRGBPixels(x, y + yp, w, 1, filtered, 0, w);
+          }
+      }
+  }
 
-       @param x x-coordinate
-       @param y y-coordinate
-       @param rgb color
-     */
-    public abstract int filterRGB(int x,
-				  int y,
-				  int rgb);
+  /**
+   * Filters a single pixel from the default ColorModel.
+   *
+   * @param x x-coordinate
+   * @param y y-coordinate
+   * @param rgb color
+   */
+  public abstract int filterRGB(int x, int y, int rgb);
 }
diff --git a/java/awt/image/ReplicateScaleFilter.java b/java/awt/image/ReplicateScaleFilter.java
index 6d5099dea..8048838ae 100644
--- a/java/awt/image/ReplicateScaleFilter.java
+++ b/java/awt/image/ReplicateScaleFilter.java
@@ -46,6 +46,7 @@ import java.util.Hashtable;
  * exact method is not defined by Sun but some sort of fast Box filter should
  * probably be correct.
  * <br>
+ * Currently this filter does nothing and needs to be implemented.
  *
  * @author C. Brian Jones (cbj@gnu.org) 
  */
@@ -116,11 +117,11 @@ public class ReplicateScaleFilter extends ImageFilter
 	}
 	else if (destWidth < 0)
 	{
-	    destWidth = (int) (width * ((double) destHeight / srcHeight));
+	    destWidth = width * destHeight / srcHeight;
 	}
 	else if (destHeight < 0)
 	{
-	    destHeight = (int) (height * ((double) destWidth / srcWidth));
+	    destHeight = height * destWidth / srcWidth;
 	}
 
 	if (consumer != null)
@@ -157,19 +158,35 @@ public class ReplicateScaleFilter extends ImageFilter
     public void setPixels(int x, int y, int w, int h, 
 	   ColorModel model, byte[] pixels, int offset, int scansize)
     {
-	double rx = ((double) srcWidth) / destWidth;
-	double ry = ((double) srcHeight) / destHeight;
-
-	int destScansize = (int) Math.round(scansize / rx);
-
-	byte[] destPixels = replicatePixels(x, y, w, h,
-                                           model, pixels, offset, scansize,
-	                                   rx, ry, destScansize);
-
-	if (consumer != null)
-	  consumer.setPixels((int) Math.floor(x/rx), (int) Math.floor(y/ry),
-			     (int) Math.ceil(w/rx), (int) Math.ceil(h/ry),
-			     model, destPixels, 0, destScansize);
+      if (srcrows == null || srccols == null)
+        setupSources();
+      int dx1 = (2 * x * destWidth + srcWidth - 1) / (2 * destWidth);
+      int dy1 = (2 * y * destHeight + srcHeight - 1) / (2 * destHeight);
+      byte[] pix;
+      if (outpixbuf != null && outpixbuf instanceof byte[])
+        {
+          pix = (byte[]) outpixbuf;
+        }
+      else
+        {
+          pix = new byte[destWidth];
+          outpixbuf = pix;
+        }
+      int sy, sx;
+      for (int yy = dy1; (sy = srcrows[yy]) < y + h; yy++)
+        {
+          int offs = offset + scansize * (sy - y);
+          int xx;
+          for (xx = dx1; (sx = srccols[xx]) < x + w; xx++)
+            {
+              pix[xx] = pixels[offs + sx - x];
+            }
+          if (xx > dx1)
+            {
+              consumer.setPixels(dx1, yy, xx - dx1, 1, model, pix, dx1,
+                                 destWidth);
+            }
+        }
     }
 
     /**
@@ -189,59 +206,52 @@ public class ReplicateScaleFilter extends ImageFilter
     public void setPixels(int x, int y, int w, int h, 
            ColorModel model, int[] pixels, int offset, int scansize)
     {
-	double rx = ((double) srcWidth) / destWidth;
-	double ry = ((double) srcHeight) / destHeight;
-
-	int destScansize = (int) Math.round(scansize / rx);
-
-	int[] destPixels = replicatePixels(x, y, w, h,
-                                           model, pixels, offset, scansize,
-	                                   rx, ry, destScansize);
-
-	if (consumer != null)
-	  consumer.setPixels((int) Math.floor(x/rx), (int) Math.floor(y/ry),
-			     (int) Math.ceil(w/rx), (int) Math.ceil(h/ry),
-			     model, destPixels, 0, destScansize);
-    }
-
-    private byte[] replicatePixels(int srcx, int srcy, int srcw, int srch,
-                                   ColorModel model, byte[] srcPixels,
-                                   int srcOffset, int srcScansize,
-                                   double rx, double ry, int destScansize)
-    {
-	byte[] destPixels =
-	  new byte[(int) Math.ceil(srcw/rx) * (int) Math.ceil(srch/ry)];
-
-	int a, b;
-	for (int i = 0; i < destPixels.length; i++)
-	{
-	    a = (int) ((int) ( ((double) i) / destScansize) * ry) * srcScansize;
-	    b = (int) ((i % destScansize) * rx);
-	    if ((a + b + srcOffset) < srcPixels.length)
-		destPixels[i] = srcPixels[a + b + srcOffset];
-	}
-
-	return destPixels;
+      if (srcrows == null || srccols == null)
+        setupSources();
+      int dx1 = (2 * x * destWidth + srcWidth - 1) / (2 * destWidth);
+      int dy1 = (2 * y * destHeight + srcHeight - 1) / (2 * destHeight);
+      int[] pix;
+      if (outpixbuf != null && outpixbuf instanceof int[])
+        {
+          pix = (int[]) outpixbuf;
+        }
+      else
+        {
+          pix = new int[destWidth];
+          outpixbuf = pix;
+        }
+      int sy, sx;
+      for (int yy = dy1; (sy = srcrows[yy]) < y + h; yy++)
+        {
+          int offs = offset + scansize * (sy - y);
+          int xx;
+          for (xx = dx1; (sx = srccols[xx]) < x + w; xx++)
+            {
+              pix[xx] = pixels[offs + sx - x];
+            }
+          if (xx > dx1)
+            {
+              consumer.setPixels(dx1, yy, xx - dx1, 1, model, pix, dx1,
+                                 destWidth);
+            }
+        }
     }
 
-    private int[] replicatePixels(int srcx, int srcy, int srcw, int srch,
-                                  ColorModel model, int[] srcPixels,
-                                  int srcOffset, int srcScansize,
-                                  double rx, double ry, int destScansize)
-    {
-	int[] destPixels =
-	  new int[(int) Math.ceil(srcw/rx) * (int) Math.ceil(srch/ry)];
-
-	int a, b;
-	for (int i = 0; i < destPixels.length; i++)
-	{
-	    a = (int) ((int) ( ((double) i) / destScansize) * ry) * srcScansize;
-	    b = (int) ((i % destScansize) * rx);
-	    if ((a + b + srcOffset) < srcPixels.length)
-		destPixels[i] = srcPixels[a + b + srcOffset];
-	}
-
-	return destPixels;
-    }
+  /**
+   * Sets up the srcrows and srccols arrays.
+   */
+  private void setupSources()
+  {
+    srcrows = new int[destHeight + 1];
+    for (int y = 0; y <= destHeight; y++)
+      {
+        srcrows[y] = (2 * y * srcHeight + srcHeight) / (2 * destHeight);
+      }
+    srccols = new int[destWidth + 1];
+    for (int x = 0; x <= destWidth; x++)
+      {
+        srccols[x] = (2 * x * srcWidth + srcWidth) / (2 * destWidth);
+      }
+  }
 }
 
diff --git a/java/awt/image/SampleModel.java b/java/awt/image/SampleModel.java
index cb352bb4d..506e78a9b 100644
--- a/java/awt/image/SampleModel.java
+++ b/java/awt/image/SampleModel.java
@@ -246,9 +246,7 @@ public abstract class SampleModel
   public void setDataElements(int x, int y, int w, int h,
                               Object obj, DataBuffer data)
   {
-    int size = w * h;
     int numDataElements = getNumDataElements();
-    int dataSize = numDataElements * size;
     
     Object pixelData;
     switch (getTransferType())
@@ -257,25 +255,34 @@ public abstract class SampleModel
         pixelData = new byte[numDataElements];
         break;
       case DataBuffer.TYPE_USHORT:
+      case DataBuffer.TYPE_SHORT:
         pixelData = new short[numDataElements];
         break;
       case DataBuffer.TYPE_INT:
         pixelData = new int[numDataElements];
         break;
+      case DataBuffer.TYPE_FLOAT:
+        pixelData = new float[numDataElements];
+        break;
+      case DataBuffer.TYPE_DOUBLE:
+        pixelData = new double[numDataElements];
+        break;
       default:
-        // Seems like the only sensible thing to do.
-        throw new ClassCastException();
+        // The RI silently igores invalid types.
+        pixelData = null;
       }
-    int inOffset = 0;
 
-    for (int yy = y; yy < (y + h); yy++)
+    int inOffset = 0;
+    if (pixelData != null)
       {
-        for (int xx = x; xx < (x + w); xx++)
+        for (int yy=y; yy<(y+h); yy++)
           {
-            System.arraycopy(obj, inOffset, pixelData, 0,
-                             numDataElements);
-            setDataElements(xx, yy, pixelData, data);
-            inOffset += numDataElements;
+            for (int xx=x; xx<(x+w); xx++)
+              {
+                System.arraycopy(obj, inOffset, pixelData, 0, numDataElements);
+                setDataElements(xx, yy, pixelData, data);
+                inOffset += numDataElements;
+              }
           }
       }
   }
diff --git a/java/awt/image/SinglePixelPackedSampleModel.java b/java/awt/image/SinglePixelPackedSampleModel.java
index a37fc0bba..9ed948c54 100644
--- a/java/awt/image/SinglePixelPackedSampleModel.java
+++ b/java/awt/image/SinglePixelPackedSampleModel.java
@@ -412,110 +412,31 @@ public class SinglePixelPackedSampleModel extends SampleModel
     return (samples & bitMasks[b]) >>> bitOffsets[b];
   }
   
-  /**
-   * This method implements a more efficient way to set data elements than the 
-   * default implementation of the super class. It sets the data elements line 
-   * by line instead of pixel by pixel.
-   * 
-   * @param x The x-coordinate of the data elements in <code>obj</code>.
-   * @param y The y-coordinate of the data elements in <code>obj</code>.
-   * @param w The width of the data elements in <code>obj</code>.
-   * @param h The height of the data elements in <code>obj</code>.
-   * @param obj The primitive array containing the data elements to set.
-   * @param data The DataBuffer to store the data elements into.
-   * @see java.awt.image.SampleModel#setDataElements(int, int, int, int, 
-   *     java.lang.Object, java.awt.image.DataBuffer)
-   */
-  public void setDataElements(int x, int y, int w, int h,
-				Object obj, DataBuffer data)
-  {
-    
-    Object pixelData;
-    switch (getTransferType())
-    {
-      case DataBuffer.TYPE_BYTE:
-        pixelData = ((DataBufferByte) data).getData();
-        break;
-       case DataBuffer.TYPE_USHORT:
-         pixelData = ((DataBufferUShort) data).getData();
-         break;
-       case DataBuffer.TYPE_INT:
-         pixelData = ((DataBufferInt) data).getData();
-         break;
-       default:
-          // Seems like the only sensible thing to do.
-          throw new ClassCastException();
-    }
-    
-    int inOffset = 0;
-    int dataOffset = scanlineStride*y + x + data.getOffset();
-    for (int yy=y; yy<(y+h); yy++)
-    {
-      System.arraycopy(obj,inOffset,pixelData,dataOffset,w);
-      dataOffset += scanlineStride;
-      inOffset += w;
-    }
-  }
-  
-  
   public void setDataElements(int x, int y, Object obj, DataBuffer data)
   {
-    int offset = scanlineStride*y + x + data.getOffset();
     
     int transferType = getTransferType();
-    if (getTransferType() != data.getDataType())
-      {
-	throw new IllegalArgumentException("transfer type ("+
-					   getTransferType()+"), "+
-					   "does not match data "+
-					   "buffer type (" +
-					   data.getDataType() +
-					   ").");
-      }
-
-    try
-      {
-	switch (transferType)
-	  {
-	  case DataBuffer.TYPE_BYTE:
-	    {
-	      DataBufferByte out = (DataBufferByte) data;
-	      byte[] in = (byte[]) obj;
-	      out.getData()[offset] = in[0];
-	      return;
-	    }
-	  case DataBuffer.TYPE_USHORT:
-	    {
-	      DataBufferUShort out = (DataBufferUShort) data;
-	      short[] in = (short[]) obj;
-	      out.getData()[offset] = in[0];
-	      return;
-	    }
-	  case DataBuffer.TYPE_INT:
-	    {
-	      DataBufferInt out = (DataBufferInt) data;
-	      int[] in = (int[]) obj;
-	      out.getData()[offset] = in[0];
-	      return;
-	    }
-	    // FIXME: Fill in the other possible types.
-	  default:
-	    throw new InternalError();
-	  }
-      }
-    catch (ArrayIndexOutOfBoundsException aioobe)
-      {
-	String msg = "While writing data elements" +
-	  ", x="+x+", y="+y+
-	  ", width="+width+", height="+height+
-	  ", scanlineStride="+scanlineStride+
-	  ", offset="+offset+
-	  ", data.getSize()="+data.getSize()+
-	  ", data.getOffset()="+data.getOffset()+
-	  ": " +
-	  aioobe;
-	throw new ArrayIndexOutOfBoundsException(msg);
-      }
+        switch (transferType)
+          {
+          case DataBuffer.TYPE_BYTE:
+            {
+              byte[] in = (byte[]) obj;
+              data.setElem(y * scanlineStride + x, ((int) in[0]) & 0xff);
+              break;
+            }
+          case DataBuffer.TYPE_USHORT:
+            {
+              short[] in = (short[]) obj;
+          data.setElem(y * scanlineStride + x, ((int) in[0]) & 0xffff);
+          break;
+            }
+          case DataBuffer.TYPE_INT:
+            {
+              int[] in = (int[]) obj;
+          data.setElem(y * scanlineStride + x, in[0]);
+          break;
+            }
+          }
     }
 
   /**