1 files changed, 234 insertions, 0 deletions
diff --git a/gcc-4.4.3/libjava/classpath/gnu/javax/imageio/bmp/EncodeRLE8.java b/gcc-4.4.3/libjava/classpath/gnu/javax/imageio/bmp/EncodeRLE8.java
new file mode 100644
index 000000000..dbbaeb269
--- /dev/null
+++ b/gcc-4.4.3/libjava/classpath/gnu/javax/imageio/bmp/EncodeRLE8.java
@@ -0,0 +1,234 @@
+/* EncodeRGB32.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.bmp;
+
+import java.awt.image.BufferedImage;
+import java.awt.image.PixelGrabber;
+import java.io.IOException;
+import java.nio.BufferUnderflowException;
+import java.nio.ByteBuffer;
+
+import javax.imageio.IIOImage;
+import javax.imageio.ImageWriteParam;
+import javax.imageio.metadata.IIOMetadata;
+import javax.imageio.stream.ImageOutputStream;
+
+public class EncodeRLE8
+    extends BMPEncoder
+{
+  protected BMPInfoHeader infoHeader;
+  protected BMPFileHeader fileHeader;
+  protected long offset;
+  
+  /**
+   * RLE control codes
+   */
+  private static final byte ESCAPE = (byte)0;
+  private static final byte EOL = (byte)0; // end of line
+  private static final byte EOB = (byte)1; // end of bitmap
+  private static final byte DELTA = (byte)2; // delta
+
+  /**
+   * Constructs an instance of this class.
+   * 
+   * @param fh - the file header to use.
+   * @param ih - the info header to use.
+   */
+  public EncodeRLE8(BMPFileHeader fh, BMPInfoHeader ih)
+  {
+    super();
+    fileHeader = fh;
+    infoHeader = ih;
+    offset = BMPFileHeader.SIZE + BMPInfoHeader.SIZE;
+  }
+  
+  /**
+   * The image encoder.
+   * 
+   * @param o - the image output stream
+   * @param streamMetadata - metadata associated with this stream, or
+   * null
+   * @param image - an IIOImage containing image data.
+   * @param param - image writing parameters, or null
+   * @exception IOException if a write error occurs
+   */
+  public void encode(ImageOutputStream o, IIOMetadata streamMetadata,
+                     IIOImage image, ImageWriteParam param) throws IOException
+  {
+    int size;
+    int value;
+    int j;
+    int rowCount;
+    int rowIndex;
+    int lastRowIndex;
+    int[] bitmap;
+    size = (infoHeader.biWidth * infoHeader.biHeight) - 1;
+    rowCount = 1;
+    rowIndex = size - infoHeader.biWidth;
+    lastRowIndex = rowIndex;
+    ByteBuffer buf = ByteBuffer.allocate(size);
+    try
+      {
+        bitmap = new int[infoHeader.biWidth * infoHeader.biHeight];
+        PixelGrabber pg = new PixelGrabber((BufferedImage) image.getRenderedImage(),
+                                           0, 0, infoHeader.biWidth,
+                                           infoHeader.biHeight, bitmap, 0,
+                                           infoHeader.biWidth);
+        pg.grabPixels();
+        
+        for (j = 0; j < size; j++)
+          {
+            value = bitmap[rowIndex];
+            buf.put((byte) (value & 0xFF));
+            
+            if (rowCount == infoHeader.biWidth)
+              {
+                rowCount = 1;
+                rowIndex = lastRowIndex - infoHeader.biWidth;
+                lastRowIndex = rowIndex;
+              }
+            else
+              rowCount++;
+            rowIndex++;
+          }
+        
+        buf.flip();
+        o.write(uncompress(infoHeader.biWidth, infoHeader.biHeight, buf));
+      }
+    catch (Exception wb)
+      {
+        wb.printStackTrace();
+      }
+    }
+  
+
+  /**
+   * Uncompresses the image stored in the buffer.
+   * 
+   * @param w - the width of the image
+   * @param h - the height of the image
+   * @param buf - the ByteBuffer containing the pixel values.
+   * @return byte array containing the uncompressed image
+   * @throws IOException if an error is encountered while reading
+   * buffer.
+   */
+  private byte[] uncompress(int w, int h, ByteBuffer buf) throws IOException
+  {
+    byte[] cmd = new byte[2];
+    byte[] data = new byte[w * h];
+    int offIn = 0;
+    int x = 0, y = 0;
+
+    try
+      {
+        while ((x + y * w) < w * h)
+          {
+            try
+            {
+              buf.get(cmd);
+            }
+            catch (BufferUnderflowException e)
+            {
+              throw new IOException("Error reading compressed data.");
+            }
+
+            if (cmd[0] == ESCAPE)
+              {
+                switch (cmd[1])
+                  {
+                  case EOB:
+                    return data;
+                  case EOL:
+                    x = 0;
+                    y++;
+                    break;
+                  case DELTA:
+                    try
+                    {
+                      buf.get(cmd);
+                    }
+                    catch (BufferUnderflowException e)
+                    {
+                      throw new IOException("Error reading compressed data.");
+                    }
+                    
+                    int dx = cmd[0] & (0xFF);
+                    int dy = cmd[1] & (0xFF);
+                    x += dx;
+                    y += dy;
+                    break;
+
+                  default:
+                    int length = cmd[1] & (0xFF);
+                    int copylength = length;
+
+                    length += (length & 1);
+
+                    byte[] run = new byte[length];
+
+                    try
+                    {
+                      buf.get(run);
+                    }
+                    catch (BufferUnderflowException e)
+                    {
+                      throw new IOException("Error reading compressed data.");
+                    }
+
+                    System.arraycopy(run, 0, data, (x + w * (h - y - 1)),
+                                     copylength);
+                    x += copylength;
+                    break;
+                  }
+              }
+            else
+              {
+                int length = cmd[0] & (0xFF);
+                for (int i = 0; i < length; i++)
+                  data[(h - y - 1) * w + x++] = cmd[1];
+              }
+          }
+        return data;
+      }
+    catch (ArrayIndexOutOfBoundsException e)
+      {
+        throw new BMPException("Invalid RLE data.");
+      }
+  }
+}