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diff --git a/src/main/java/org/pdfbox/filter/RunLengthDecodeFilter.java b/src/main/java/org/pdfbox/filter/RunLengthDecodeFilter.java
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+++ b/src/main/java/org/pdfbox/filter/RunLengthDecodeFilter.java
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+/**
+ * Copyright (c) 2004, www.pdfbox.org
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. Neither the name of pdfbox; nor the names of its
+ *    contributors may be used to endorse or promote products derived from this
+ *    software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * http://www.pdfbox.org
+ *
+ */
+package org.pdfbox.filter;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+
+import org.apache.log4j.Logger;
+import org.pdfbox.cos.COSDictionary;
+
+/**
+ * This is a filter for the RunLength Decoder.
+ * 
+ * From the PDF Reference 
+ * <pre>
+ * The RunLengthDecode filter decodes data that has been encoded in a simple
+ * byte-oriented format based on run length. The encoded data is a sequence of
+ * runs, where each run consists of a length byte followed by 1 to 128 bytes of data. If
+ * the length byte is in the range 0 to 127, the following length + 1 (1 to 128) bytes
+ * are copied literally during decompression. If length is in the range 129 to 255, the
+ * following single byte is to be copied 257 ? length (2 to 128) times during decompression.
+ * A length value of 128 denotes EOD.
+ * 
+ * The compression achieved by run-length encoding depends on the input data. In
+ * the best case (all zeros), a compression of approximately 64:1 is achieved for long
+ * files. The worst case (the hexadecimal sequence 00 alternating with FF) results in
+ * an expansion of 127:128.
+ * </pre>
+ *
+ * @author  Ben Litchfield
+ * @version $Revision: 1.3 $
+ */
+public class RunLengthDecodeFilter implements Filter
+{
+    private static Logger log = Logger.getLogger( RunLengthDecodeFilter.class );
+    
+    private static final int RUN_LENGTH_EOD = 128;
+
+    /**
+     * Constructor.
+     */
+    public RunLengthDecodeFilter()
+    {
+        //default constructor
+    }
+
+    /**
+     * This will decode some compressed data.
+     *
+     * @param compressedData The compressed byte stream.
+     * @param result The place to write the uncompressed byte stream.
+     * @param options The options to use to encode the data.
+     *
+     * @throws IOException If there is an error decompressing the stream.
+     */
+    public void decode( InputStream compressedData, OutputStream result, COSDictionary options ) throws IOException
+    {
+        int dupAmount = -1;
+        byte[] buffer = new byte[128];
+        while( (dupAmount = compressedData.read()) != -1 && dupAmount != RUN_LENGTH_EOD )
+        {
+            if( dupAmount <= 127 )
+            {
+                int amountToCopy = dupAmount+1;
+                int compressedRead = 0;
+                while( amountToCopy > 0 )
+                {
+                    compressedRead = compressedData.read( buffer, 0, amountToCopy );
+                    result.write( buffer, 0, compressedRead );
+                    amountToCopy -= compressedRead;
+                }
+            }
+            else
+            {
+                int dupByte = compressedData.read();
+                for( int i=0; i<257-dupAmount; i++ )
+                {
+                    result.write( dupByte );
+                }
+            }
+        }
+    }
+
+     /**
+     * This will encode some data.
+     *
+     * @param rawData The raw data to encode.
+     * @param result The place to write to encoded results to.
+     * @param options The options to use to encode the data.
+     *
+     * @throws IOException If there is an error compressing the stream.
+     */
+    public void encode( InputStream rawData, OutputStream result, COSDictionary options ) throws IOException
+    {
+        log.warn( "Warning: RunLengthDecodeFilter.encode is not implemented yet, skipping this stream." );
+    }
+}
+\ No newline at end of file