1 files changed, 103 insertions, 0 deletions
diff --git a/src/main/java/org/pdfbox/filter/ASCII85Filter.java b/src/main/java/org/pdfbox/filter/ASCII85Filter.java
new file mode 100644
index 0000000..335208c
--- /dev/null
+++ b/src/main/java/org/pdfbox/filter/ASCII85Filter.java
@@ -0,0 +1,103 @@
+/**
+ * Copyright (c) 2003, 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.pdfbox.io.ASCII85InputStream;
+import org.pdfbox.io.ASCII85OutputStream;
+
+import org.pdfbox.cos.COSDictionary;
+
+/**
+ * This is the used for the ASCIIHexDecode filter.
+ *
+ * @author Ben Litchfield (ben@csh.rit.edu)
+ * @version $Revision: 1.6 $
+ */
+public class ASCII85Filter implements Filter
+{
+    /**
+     * 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
+    {
+        ASCII85InputStream is = null;
+        try
+        {
+            is = new ASCII85InputStream(compressedData);
+            byte[] buffer = new byte[1024];
+            int amountRead = 0;
+            while( (amountRead = is.read( buffer, 0, 1024) ) != -1 )
+            {
+                result.write(buffer, 0, amountRead);
+            }
+            result.flush();
+        }
+        finally
+        {
+            if( is != null )
+            {
+                is.close();
+            }
+        }
+    }
+
+    /**
+     * 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
+    {
+        ASCII85OutputStream os = new ASCII85OutputStream(result);
+        byte[] buffer = new byte[1024];
+        int amountRead = 0;
+        while( (amountRead = rawData.read( buffer, 0, 1024 )) != -1 )
+        {
+            os.write( buffer, 0, amountRead );
+        }
+        os.close();
+        result.flush();
+    }
+}
+\ No newline at end of file