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
directory might differ from line-endings of the respective
files in the upstream repository.

1 files changed, 265 insertions, 0 deletions

diff --git a/libjava/classpath/java/awt/image/RGBImageFilter.java b/libjava/classpath/java/awt/image/RGBImageFilter.java
new file mode 100644
index 000000000..1354c3a80
--- /dev/null
+++ b/libjava/classpath/java/awt/image/RGBImageFilter.java
@@ -0,0 +1,265 @@
+/* RGBImageFilter.java -- Java class for filtering Pixels by RGB values
+   Copyright (C) 1999, 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 java.awt.image;
+
+/**
+ * A filter designed to filter images in the default RGBColorModel regardless of
+ * the ImageProducer's ColorModel.
+ *
+ * @author Mark Benvenuto (mcb54@columbia.edu)
+ */
+public abstract class RGBImageFilter extends ImageFilter
+{
+  protected ColorModel origmodel;
+
+  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;
+
+  /**
+   * 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)
+  {
+    if ((model instanceof IndexColorModel) && canFilterIndexColorModel)
+      {
+        ColorModel newCM = filterIndexColorModel((IndexColorModel) model);
+        substituteColorModel(model, newCM);
+        consumer.setColorModel(newmodel);
+      }
+    else
+      {
+        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();
+    byte[] reds = new byte[len];
+    byte[] greens = new byte[len];
+    byte[] blues = new byte[len];
+    byte[] alphas = new byte[len];
+
+    icm.getAlphas( alphas );
+    icm.getReds( reds );
+    icm.getGreens( greens );
+    icm.getBlues( blues );
+
+    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;
+  }
+
+  /**
+   * 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);
+          }
+      }
+  }
+
+  /**
+   * 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]));
+                index++;
+              }
+            index += scansize - w;
+            filterRGBPixels(x, y + yp, w, 1, filtered, 0, w);
+          }
+      }
+  }
+
+  /**
+   * 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);
+}