--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/java.desktop/share/classes/com/sun/imageio/plugins/tiff/TIFFDeflater.java	Mon Nov 23 12:26:12 2015 -0800
@@ -0,0 +1,120 @@
+/*
+ * Copyright (c) 2005, 2015, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code 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
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package com.sun.imageio.plugins.tiff;
+
+import javax.imageio.plugins.tiff.BaselineTIFFTagSet;
+import java.io.IOException;
+import java.util.zip.Deflater;
+import javax.imageio.ImageWriteParam;
+
+/**
+ * Compressor superclass for Deflate and ZLib compression.
+ */
+public class TIFFDeflater extends TIFFCompressor {
+
+    Deflater deflater;
+    int predictor;
+
+    public TIFFDeflater(String compressionType,
+                        int compressionTagValue,
+                        ImageWriteParam param,
+                        int predictorValue) {
+        super(compressionType, compressionTagValue, true);
+
+        this.predictor = predictorValue;
+
+        // Set the deflate level.
+        int deflateLevel;
+        if(param != null &&
+           param.getCompressionMode() == ImageWriteParam.MODE_EXPLICIT) {
+            float quality = param.getCompressionQuality();
+            deflateLevel = (int)(1 + 8*quality);
+        } else {
+            deflateLevel = Deflater.DEFAULT_COMPRESSION;
+        }
+
+        this.deflater = new Deflater(deflateLevel);
+    }
+
+    public int encode(byte[] b, int off,
+                      int width, int height,
+                      int[] bitsPerSample,
+                      int scanlineStride) throws IOException {
+
+        int inputSize = height*scanlineStride;
+        int blocks = (inputSize + 32767)/32768;
+
+        // Worst case for Zlib deflate is input size + 5 bytes per 32k
+        // block, plus 6 header bytes
+        byte[] compData = new byte[inputSize + 5*blocks + 6];
+
+        int numCompressedBytes = 0;
+        if(predictor == BaselineTIFFTagSet.PREDICTOR_HORIZONTAL_DIFFERENCING) {
+            int samplesPerPixel = bitsPerSample.length;
+            int bitsPerPixel = 0;
+            for (int i = 0; i < samplesPerPixel; i++) {
+                bitsPerPixel += bitsPerSample[i];
+            }
+            int bytesPerRow = (bitsPerPixel*width + 7)/8;
+            byte[] rowBuf = new byte[bytesPerRow];
+
+            int maxRow = height - 1;
+            for(int i = 0; i < height; i++) {
+                // Cannot modify b[] in place as it might be a data
+                // array from the image being written so make a copy.
+                System.arraycopy(b, off, rowBuf, 0, bytesPerRow);
+                for(int j = bytesPerRow - 1; j >= samplesPerPixel; j--) {
+                    rowBuf[j] -= rowBuf[j - samplesPerPixel];
+                }
+
+                deflater.setInput(rowBuf);
+                if(i == maxRow) {
+                    deflater.finish();
+                }
+
+                int numBytes = 0;
+                while((numBytes = deflater.deflate(compData,
+                                                   numCompressedBytes,
+                                                   compData.length -
+                                                   numCompressedBytes)) != 0) {
+                    numCompressedBytes += numBytes;
+                }
+
+                off += scanlineStride;
+            }
+        } else {
+            deflater.setInput(b, off, height*scanlineStride);
+            deflater.finish();
+
+            numCompressedBytes = deflater.deflate(compData);
+        }
+
+        deflater.reset();
+
+        stream.write(compData, 0, numCompressedBytes);
+
+        return numCompressedBytes;
+    }
+}