1 files changed, 0 insertions, 121 deletions
diff --git a/src/main/java/org/pdfbox/pdmodel/graphics/predictor/Paeth.java b/src/main/java/org/pdfbox/pdmodel/graphics/predictor/Paeth.java
deleted file mode 100644
index 1fddef0..0000000
--- a/src/main/java/org/pdfbox/pdmodel/graphics/predictor/Paeth.java
+++ /dev/null
@@ -1,121 +0,0 @@
-/**
- * Copyright (c) 2005, 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.pdmodel.graphics.predictor;
-
-/**
- * From http://www.w3.org/TR/PNG-Filters.html: The Paeth filter computes a
- * simple linear function of the three neighboring pixels (left, above, upper
- * left), then chooses as predictor the neighboring pixel closest to the
- * computed value. This technique is due to Alan W. Paeth [PAETH].
- * 
- * To compute the Paeth filter, apply the following formula to each byte of the
- * scanline:
- * 
- * <code>Paeth(i,j) = Raw(i,j) - PaethPredictor(Raw(i-1,j), Raw(i,j-1), Raw(i-1,j-1))</code>
- * 
- * To decode the Paeth filter
- * 
- * <code>Raw(i,j) = Paeth(i,j) - PaethPredictor(Raw(i-1,j), Raw(i,j-1), Raw(i-1,j-1))</code>
- * 
- * @author xylifyx@yahoo.co.uk
- * @version $Revision: 1.2 $
- */
-public class Paeth extends PredictorAlgorithm 
-{
-    /**
-     * The paeth predictor function.
-     * 
-     * This function is taken almost directly from the PNG definition on
-     * http://www.w3.org/TR/PNG-Filters.html
-     * 
-     * @param a
-     *            left
-     * @param b
-     *            above
-     * @param c
-     *            upper left
-     * @return The result of the paeth predictor.
-     */
-    public int paethPredictor(int a, int b, int c) 
-    {
-        int p = a + b - c; // initial estimate
-        int pa = Math.abs(p - a); // distances to a, b, c
-        int pb = Math.abs(p - b);
-        int pc = Math.abs(p - c);
-        // return nearest of a,b,c,
-        // breaking ties in order a,b,c.
-        if (pa <= pb && pa <= pc)
-        {
-            return a;
-        }
-        else if (pb <= pc)
-        {
-            return b;
-        }
-        else
-        {
-            return c;
-        }
-    }
-
-    /**
-     * @see org.pdfbox.pdmodel.graphics.predictor.PredictorAlgorithm#encodeLine(byte[], byte[],
-     *      int, int, int, int)
-     */
-    public void encodeLine(byte[] src, byte[] dest, int srcDy, int srcOffset,
-            int destDy, int destOffset) 
-    {
-        int bpl = getWidth() * getBpp();
-        for (int x = 0; x < bpl; x++) 
-        {
-            dest[x + destOffset] = (byte) (src[x + srcOffset] - paethPredictor(
-                    leftPixel(src, srcOffset, srcDy, x), abovePixel(src,
-                            srcOffset, srcDy, x), aboveLeftPixel(src,
-                            srcOffset, srcDy, x)));
-        }
-    }
-
-    /**
-     * @see org.pdfbox.pdmodel.graphics.predictor.PredictorAlgorithm#decodeLine(byte[], byte[],
-     *      int, int, int, int)
-     */
-    public void decodeLine(byte[] src, byte[] dest, int srcDy, int srcOffset,
-            int destDy, int destOffset) 
-    {
-        int bpl = getWidth() * getBpp();
-        for (int x = 0; x < bpl; x++) 
-        {
-            dest[x + destOffset] = (byte) (src[x + srcOffset] + paethPredictor(
-                    leftPixel(dest, destOffset, destDy, x), abovePixel(dest,
-                            destOffset, destDy, x), aboveLeftPixel(dest,
-                            destOffset, destDy, x)));
-        }
-    }
-}