diff options
Diffstat (limited to 'src/main/java/org/pdfbox/pdmodel/graphics/predictor')
8 files changed, 0 insertions, 991 deletions
diff --git a/src/main/java/org/pdfbox/pdmodel/graphics/predictor/Average.java b/src/main/java/org/pdfbox/pdmodel/graphics/predictor/Average.java deleted file mode 100644 index 46e65dc..0000000 --- a/src/main/java/org/pdfbox/pdmodel/graphics/predictor/Average.java +++ /dev/null @@ -1,81 +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;
-
-/**
- * We can use raw on the right hand side of
- * the decoding formula because it is already decoded.
- *
- * <code>average(i,j) = raw(i,j) + (raw(i-1,j)+raw(i,j-1)/2</code>
- *
- * decoding
- *
- * <code>raw(i,j) = avarage(i,j) - (raw(i-1,j)+raw(i,j-1)/2</code>
- *
- * @author xylifyx@yahoo.co.uk
- * @version $Revision: 1.2 $
- */
-public class Average extends PredictorAlgorithm
-{
- /**
- * Not an optimal version, but close to the def.
- *
- * @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] - ((leftPixel(
- src, srcOffset, srcDy, x) + abovePixel(src, srcOffset,
- srcDy, x)) >>> 2));
- }
- }
-
- /**
- * @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] + ((leftPixel(
- dest, destOffset, destDy, x) + abovePixel(dest,
- destOffset, destDy, x)) >>> 2));
- }
- }
-}
diff --git a/src/main/java/org/pdfbox/pdmodel/graphics/predictor/None.java b/src/main/java/org/pdfbox/pdmodel/graphics/predictor/None.java deleted file mode 100644 index 20ec815..0000000 --- a/src/main/java/org/pdfbox/pdmodel/graphics/predictor/None.java +++ /dev/null @@ -1,104 +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;
-
-/**
- * The none algorithm.
- *
- * <code>None(i,j) = Raw(i,j)</code>
- *
- * <code>Raw(i,j) = None(i,j)</code>
- *
- * @author xylifyx@yahoo.co.uk
- * @version $Revision: 1.2 $
- */
-public class None extends PredictorAlgorithm
-{
- /**
- * encode a byte array full of image data using the filter that this object
- * implements.
- *
- * @param src
- * buffer
- * @param dest
- * buffer
- */
- public void encode(byte[] src, byte[] dest)
- {
- checkBufsiz(dest, src);
- System.arraycopy(src,0,dest,0,src.length);
- }
-
- /**
- * decode a byte array full of image data using the filter that this object
- * implements.
- *
- * @param src
- * buffer
- * @param dest
- * buffer
- */
- public void decode(byte[] src, byte[] dest)
- {
- System.arraycopy(src,0,dest,0,src.length);
- }
-
-
-
- /**
- * @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[destOffset + x] = src[srcOffset + 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[destOffset + x] = src[srcOffset + x];
- }
- }
-
-}
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)));
- }
- }
-}
diff --git a/src/main/java/org/pdfbox/pdmodel/graphics/predictor/PredictorAlgorithm.java b/src/main/java/org/pdfbox/pdmodel/graphics/predictor/PredictorAlgorithm.java deleted file mode 100644 index 11f60f9..0000000 --- a/src/main/java/org/pdfbox/pdmodel/graphics/predictor/PredictorAlgorithm.java +++ /dev/null @@ -1,336 +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;
-
-import java.util.Random;
-
-/**
- * Implements different PNG predictor algorithms that is used in PDF files.
- *
- * @author xylifyx@yahoo.co.uk
- * @version $Revision: 1.2 $
- * @see http://www.w3.org/TR/PNG-Filters.html
- */
-public abstract class PredictorAlgorithm
-{
- private int width;
-
- private int height;
-
- private int bpp;
-
- /**
- * check that buffer sizes matches width,height,bpp. This implementation is
- * used by most of the filters, but not Uptimum.
- *
- * @param src The source buffer.
- * @param dest The destination buffer.
- */
- public void checkBufsiz(byte[] src, byte[] dest)
- {
- if (src.length != dest.length)
- {
- throw new IllegalArgumentException("src.length != dest.length");
- }
- if (src.length != getWidth() * getHeight() * getBpp())
- {
- throw new IllegalArgumentException(
- "src.length != width * height * bpp");
- }
- }
-
- /**
- * encode line of pixel data in src from srcOffset and width*bpp bytes
- * forward, put the decoded bytes into dest.
- *
- * @param src
- * raw image data
- * @param dest
- * encoded data
- * @param srcDy
- * byte offset between lines
- * @param srcOffset
- * beginning of line data
- * @param destDy
- * byte offset between lines
- * @param destOffset
- * beginning of line data
- */
- public abstract void encodeLine(byte[] src, byte[] dest, int srcDy,
- int srcOffset, int destDy, int destOffset);
-
- /**
- * decode line of pixel data in src from src_offset and width*bpp bytes
- * forward, put the decoded bytes into dest.
- *
- * @param src
- * encoded image data
- * @param dest
- * raw data
- * @param srcDy
- * byte offset between lines
- * @param srcOffset
- * beginning of line data
- * @param destDy
- * byte offset between lines
- * @param destOffset
- * beginning of line data
- */
- public abstract void decodeLine(byte[] src, byte[] dest, int srcDy,
- int srcOffset, int destDy, int destOffset);
-
- /**
- * Simple command line program to test the algorithm.
- *
- * @param args The command line arguments.
- */
- public static void main(String[] args)
- {
- Random rnd = new Random();
- int width = 5;
- int height = 5;
- int bpp = 3;
- byte[] raw = new byte[width * height * bpp];
- rnd.nextBytes(raw);
- System.out.println("raw: ");
- dump(raw);
- for (int i = 10; i < 15; i++)
- {
- byte[] decoded = new byte[width * height * bpp];
- byte[] encoded = new byte[width * height * bpp];
-
- PredictorAlgorithm filter = PredictorAlgorithm.getFilter(i);
- filter.setWidth(width);
- filter.setHeight(height);
- filter.setBpp(bpp);
- filter.encode(raw, encoded);
- filter.decode(encoded, decoded);
- System.out.println(filter.getClass().getName());
- dump(decoded);
- }
- }
-
- /**
- * Get the left pixel from the buffer.
- *
- * @param buf The buffer.
- * @param offset The offset into the buffer.
- * @param dy The dy value.
- * @param x The x value.
- *
- * @return The left pixel.
- */
- public int leftPixel(byte[] buf, int offset, int dy, int x)
- {
- return x >= getBpp() ? buf[offset + x - getBpp()] : 0;
- }
-
- /**
- * Get the above pixel from the buffer.
- *
- * @param buf The buffer.
- * @param offset The offset into the buffer.
- * @param dy The dy value.
- * @param x The x value.
- *
- * @return The above pixel.
- */
- public int abovePixel(byte[] buf, int offset, int dy, int x)
- {
- return offset >= dy ? buf[offset + x - dy] : 0;
- }
-
- /**
- * Get the above-left pixel from the buffer.
- *
- * @param buf The buffer.
- * @param offset The offset into the buffer.
- * @param dy The dy value.
- * @param x The x value.
- *
- * @return The above-left pixel.
- */
- public int aboveLeftPixel(byte[] buf, int offset, int dy, int x)
- {
- return offset >= dy && x >= getBpp() ? buf[offset + x - dy - getBpp()]
- : 0;
- }
-
- /**
- * Simple helper to print out a buffer.
- *
- * @param raw The bytes to print out.
- */
- private static void dump(byte[] raw)
- {
- for (int i = 0; i < raw.length; i++)
- {
- System.out.print(raw[i] + " ");
- }
- System.out.println();
- }
-
- /**
- * @return Returns the bpp.
- */
- public int getBpp()
- {
- return bpp;
- }
-
- /**
- * @param newBpp
- * The bpp to set.
- */
- public void setBpp(int newBpp)
- {
- bpp = newBpp;
- }
-
- /**
- * @return Returns the height.
- */
- public int getHeight()
- {
- return height;
- }
-
- /**
- * @param newHeight
- * The height to set.
- */
- public void setHeight(int newHeight)
- {
- height = newHeight;
- }
-
- /**
- * @return Returns the width.
- */
- public int getWidth()
- {
- return width;
- }
-
- /**
- * @param newWidth
- * The width to set.
- */
- public void setWidth(int newWidth)
- {
- this.width = newWidth;
- }
-
-
- /**
- * encode a byte array full of image data using the filter that this object
- * implements.
- *
- * @param src
- * buffer
- * @param dest
- * buffer
- */
- public void encode(byte[] src, byte[] dest)
- {
- checkBufsiz(dest, src);
- int dy = getWidth()*getBpp();
- for (int y = 0; y < height; y++)
- {
- int yoffset = y * dy;
- encodeLine(src, dest, dy, yoffset, dy, yoffset);
- }
- }
-
- /**
- * decode a byte array full of image data using the filter that this object
- * implements.
- *
- * @param src
- * buffer
- * @param dest
- * buffer
- */
- public void decode(byte[] src, byte[] dest)
- {
- checkBufsiz(src, dest);
- int dy = width * bpp;
- for (int y = 0; y < height; y++)
- {
- int yoffset = y * dy;
- decodeLine(src, dest, dy, yoffset, dy, yoffset);
- }
- }
-
- /**
- * @param predictor
- * <ul>
- * <li>1 No prediction (the default value)
- * <li>2 TIFF Predictor 2
- * <li>10 PNG prediction (on encoding, PNG None on all rows)
- * <li>11 PNG prediction (on encoding, PNG Sub on all rows)
- * <li>12 PNG prediction (on encoding, PNG Up on all rows)
- * <li>13 PNG prediction (on encoding, PNG Average on all rows)
- * <li>14 PNG prediction (on encoding, PNG Paeth on all rows)
- * <li>15 PNG prediction (on encoding, PNG optimum)
- * </ul>
- *
- * @return The predictor class based on the predictor code.
- */
- public static PredictorAlgorithm getFilter(int predictor)
- {
- PredictorAlgorithm filter;
- switch (predictor)
- {
- case 10:
- filter = new None();
- break;
- case 11:
- filter = new Sub();
- break;
- case 12:
- filter = new Up();
- break;
- case 13:
- filter = new Average();
- break;
- case 14:
- filter = new Paeth();
- break;
- case 15:
- filter = new Uptimum();
- break;
- default:
- filter = new None();
- }
- return filter;
- }
-}
diff --git a/src/main/java/org/pdfbox/pdmodel/graphics/predictor/Sub.java b/src/main/java/org/pdfbox/pdmodel/graphics/predictor/Sub.java deleted file mode 100644 index 3959dbe..0000000 --- a/src/main/java/org/pdfbox/pdmodel/graphics/predictor/Sub.java +++ /dev/null @@ -1,86 +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;
-
-/**
- * The sub algorithm.
- *
- * <code>Sub(i,j) = Raw(i,j) - Raw(i-1,j)</code>
- *
- * <code>Raw(i,j) = Sub(i,j) + Raw(i-1,j)</code>
- *
- * @author xylifyx@yahoo.co.uk
- * @version $Revision: 1.2 $
- */
-public class Sub extends PredictorAlgorithm
-{
- /**
- * @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();
- int bpp = getBpp();
- // case: x < bpp
- for (int x = 0; x < bpl && x < bpp; x++)
- {
- dest[x + destOffset] = src[x + srcOffset];
- }
- // otherwise
- for (int x = getBpp(); x < bpl; x++)
- {
- dest[x + destOffset] = (byte) (src[x + srcOffset] - src[x
- + srcOffset - bpp]);
- }
- }
-
- /**
- * @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();
- int bpp = getBpp();
- // case: x < bpp
- for (int x = 0; x < bpl && x < bpp; x++)
- {
- dest[x + destOffset] = src[x + srcOffset];
- }
- // otherwise
- for (int x = getBpp(); x < bpl; x++)
- {
- dest[x + destOffset] = (byte) (src[x + srcOffset] + dest[x
- + destOffset - bpp]);
- }
- }
-}
diff --git a/src/main/java/org/pdfbox/pdmodel/graphics/predictor/Up.java b/src/main/java/org/pdfbox/pdmodel/graphics/predictor/Up.java deleted file mode 100644 index f1932b4..0000000 --- a/src/main/java/org/pdfbox/pdmodel/graphics/predictor/Up.java +++ /dev/null @@ -1,100 +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;
-
-/**
- * The up algorithm.
- *
- * <code>Up(i,j) = Raw(i,j) - Raw(i,j-1)</code>
- *
- * <code>Raw(i,j) = Up(i,j) + Raw(i,j-1)</code>
- *
- * @author xylifyx@yahoo.co.uk
- * @version $Revision: 1.2 $
- */
-public class Up extends PredictorAlgorithm
-{
- /**
- * @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();
- // case: y = 0;
- if (srcOffset - srcDy < 0)
- {
- if (0 < getHeight())
- {
- for (int x = 0; x < bpl; x++)
- {
- dest[destOffset + x] = src[srcOffset + x];
- }
- }
- }
- else
- {
- for (int x = 0; x < bpl; x++)
- {
- dest[destOffset + x] = (byte) (src[srcOffset + x] - src[srcOffset
- + x - srcDy]);
- }
- }
- }
-
- /**
- * @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)
- {
- // case: y = 0;
- int bpl = getWidth()*getBpp();
- if (destOffset - destDy < 0)
- {
- if (0 < getHeight())
- {
- for (int x = 0; x < bpl; x++)
- {
- dest[destOffset + x] = src[srcOffset + x];
- }
- }
- }
- else
- {
- for (int x = 0; x < bpl; x++)
- {
- dest[destOffset + x] = (byte) (src[srcOffset + x] + dest[destOffset
- + x - destDy]);
- }
- }
- }
-}
diff --git a/src/main/java/org/pdfbox/pdmodel/graphics/predictor/Uptimum.java b/src/main/java/org/pdfbox/pdmodel/graphics/predictor/Uptimum.java deleted file mode 100644 index ac03162..0000000 --- a/src/main/java/org/pdfbox/pdmodel/graphics/predictor/Uptimum.java +++ /dev/null @@ -1,153 +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;
-
-/**
- *
- *
- * In an Uptimum encoded image, each line takes up width*bpp+1 bytes. The first
- * byte holds a number that signifies which algorithm encoded the line.
- *
- * @author xylifyx@yahoo.co.uk
- * @version $Revision: 1.2 $
- */
-public class Uptimum extends PredictorAlgorithm
-{
- /**
- * @see PredictorAlgorithm#checkBufsiz(byte[], byte[])
- */
- public void checkBufsiz(byte[] filtered, byte[] raw)
- {
- if (filtered.length != (getWidth() * getBpp() + 1) * getHeight())
- {
-
- throw new IllegalArgumentException(
- "filtered.length != (width*bpp + 1) * height, "
- + filtered.length + " "
- + (getWidth() * getBpp() + 1) * getHeight()
- + "w,h,bpp=" + getWidth() + "," + getHeight() + ","
- + getBpp());
- }
- if (raw.length != getWidth() * getHeight() * getBpp())
- {
- throw new IllegalArgumentException(
- "raw.length != width * height * bpp, raw.length="
- + raw.length + " w,h,bpp=" + getWidth() + ","
- + getHeight() + "," + getBpp());
- }
- }
-
- /**
- * @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)
- {
- throw new UnsupportedOperationException("encodeLine");
- }
-
- /**
- * @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)
- {
- throw new UnsupportedOperationException("decodeLine");
- }
-
- /**
- * @see PredictorAlgorithm#encode(byte[], byte[])
- */
- public void encode(byte[] src, byte[] dest)
- {
- checkBufsiz(dest, src);
- throw new UnsupportedOperationException("encode");
- }
-
- /**
- * filter indexed by byte code.
- */
- PredictorAlgorithm[] filter = { new None(), new Sub(), new Up(), new Average(),
- new Paeth() };
-
- /**
- * @see org.pdfbox.pdmodel.graphics.predictor.PredictorAlgorithm#setBpp(int)
- */
- public void setBpp(int bpp)
- {
- super.setBpp(bpp);
- for (int i = 0; i < filter.length; i++)
- {
- filter[i].setBpp(bpp);
- }
- }
- /**
- * @see org.pdfbox.pdmodel.graphics.predictor.PredictorAlgorithm#setHeight(int)
- */
- public void setHeight(int height)
- {
- super.setHeight(height);
- for (int i = 0; i < filter.length; i++)
- {
- filter[i].setHeight(height);
- }
- }
-
- /**
- * @see org.pdfbox.pdmodel.graphics.predictor.PredictorAlgorithm#setWidth(int)
- */
- public void setWidth(int width)
- {
- super.setWidth(width);
- for (int i = 0; i < filter.length; i++)
- {
- filter[i].setWidth(width);
- }
- }
-
- /**
- * @see PredictorAlgorithm#decode(byte[], byte[])
- */
- public void decode(byte[] src, byte[] dest)
- {
- checkBufsiz(src, dest);
- int bpl = getWidth() * getBpp();
- int srcDy = bpl + 1;
- for (int y = 0; y < getHeight(); y++)
- {
- PredictorAlgorithm f = filter[src[y * srcDy]];
- int srcOffset = y * srcDy + 1;
- f.decodeLine(src, dest, srcDy, srcOffset, bpl, y * bpl);
- }
- }
-}
\ No newline at end of file diff --git a/src/main/java/org/pdfbox/pdmodel/graphics/predictor/package.html b/src/main/java/org/pdfbox/pdmodel/graphics/predictor/package.html deleted file mode 100644 index 127d2e0..0000000 --- a/src/main/java/org/pdfbox/pdmodel/graphics/predictor/package.html +++ /dev/null @@ -1,10 +0,0 @@ -<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
-<html>
-<head>
-
-</head>
-<body>
-The predictor package contains code for different PNG predictor algorithms that
-are present in PDF documents. These classes are used internally by PDFBox.
-</body>
-</html>
|