iText 5 itextpdf.jar Source Code

itextpdf.jar is a component in iText 5 Java library to provide core functionalities. iText Java library allows you to generate and manage PDF documents.

The Source Code files are provided at iText GitHub site.

You can compile it to generate your JAR file, using pom.xml as the build configuration file.

The source code of itextpdf-5.5.14.jar is provided below:

✍: FYIcenter.com

com/itextpdf/text/Jpeg2000.java

/*
 *
 * This file is part of the iText (R) project.
    Copyright (c) 1998-2020 iText Group NV
 * Authors: Bruno Lowagie, Paulo Soares, et al.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License version 3
 * as published by the Free Software Foundation with the addition of the
 * following permission added to Section 15 as permitted in Section 7(a):
 * FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY
 * ITEXT GROUP. ITEXT GROUP DISCLAIMS THE WARRANTY OF NON INFRINGEMENT
 * OF THIRD PARTY RIGHTS
 *
 * This program 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 Affero General Public License for more details.
 * You should have received a copy of the GNU Affero General Public License
 * along with this program; if not, see http://www.gnu.org/licenses or write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA, 02110-1301 USA, or download the license from the following URL:
 * http://itextpdf.com/terms-of-use/
 *
 * The interactive user interfaces in modified source and object code versions
 * of this program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU Affero General Public License.
 *
 * In accordance with Section 7(b) of the GNU Affero General Public License,
 * a covered work must retain the producer line in every PDF that is created
 * or manipulated using iText.
 *
 * You can be released from the requirements of the license by purchasing
 * a commercial license. Buying such a license is mandatory as soon as you
 * develop commercial activities involving the iText software without
 * disclosing the source code of your own applications.
 * These activities include: offering paid services to customers as an ASP,
 * serving PDFs on the fly in a web application, shipping iText with a closed
 * source product.
 *
 * For more information, please contact iText Software Corp. at this
 * address: sales@itextpdf.com
 */
package com.itextpdf.text;

import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.ArrayList;

import com.itextpdf.text.error_messages.MessageLocalization;

/**
 * An <CODE>Jpeg2000</CODE> is the representation of a graphic element (JPEG)
 * that has to be inserted into the document
 *
 * @see		Element
 * @see		Image
 */

public class Jpeg2000 extends Image {
    
    // public static final membervariables
    
    public static final int JP2_JP = 0x6a502020;
    public static final int JP2_IHDR = 0x69686472;
    public static final int JPIP_JPIP = 0x6a706970;

    public static final int JP2_FTYP = 0x66747970;
    public static final int JP2_JP2H = 0x6a703268;
    public static final int JP2_COLR = 0x636f6c72;
    public static final int JP2_JP2C = 0x6a703263;
    public static final int JP2_URL = 0x75726c20;
    public static final int JP2_DBTL = 0x6474626c;
    public static final int JP2_BPCC = 0x62706363;
    public static final int JP2_JP2 = 0x6a703220;

    InputStream inp;
    int boxLength;
    int boxType;
    int numOfComps;
    ArrayList<ColorSpecBox> colorSpecBoxes = null;
    boolean isJp2 = false;
    byte[] bpcBoxData;
    
    // Constructors
    
    Jpeg2000(Image image) {
        super(image);
        if (image instanceof Jpeg2000) {
            Jpeg2000 jpeg2000 = (Jpeg2000)image;
            numOfComps = jpeg2000.numOfComps;
            if (colorSpecBoxes != null)
                colorSpecBoxes = (ArrayList<ColorSpecBox>)jpeg2000.colorSpecBoxes.clone();
            isJp2 = jpeg2000.isJp2;
            if (bpcBoxData != null)
                bpcBoxData = jpeg2000.bpcBoxData.clone();

        }
    }

    /**
     * Constructs a <CODE>Jpeg2000</CODE>-object, using an <VAR>url</VAR>.
     *
     * @param		url			the <CODE>URL</CODE> where the image can be found
     * @throws BadElementException
     * @throws IOException
     */
    public Jpeg2000(URL url) throws BadElementException, IOException {
        super(url);
        processParameters();
    }
    
    /**
     * Constructs a <CODE>Jpeg2000</CODE>-object from memory.
     *
     * @param		img		the memory image
     * @throws BadElementException
     * @throws IOException
     */
    
    public Jpeg2000(byte[] img) throws BadElementException, IOException {
        super((URL)null);
        rawData = img;
        originalData = img;
        processParameters();
    }
    
    /**
     * Constructs a <CODE>Jpeg2000</CODE>-object from memory.
     *
     * @param		img			the memory image.
     * @param		width		the width you want the image to have
     * @param		height		the height you want the image to have
     * @throws BadElementException
     * @throws IOException
     */
    
    public Jpeg2000(byte[] img, float width, float height) throws BadElementException, IOException {
        this(img);
        scaledWidth = width;
        scaledHeight = height;
    }
    
    private int cio_read(int n) throws IOException {
        int v = 0;
        for (int i = n - 1; i >= 0; i--) {
            v += inp.read() << (i << 3);
        }
        return v;
    }
    
    public void jp2_read_boxhdr() throws IOException {
        boxLength = cio_read(4);
        boxType = cio_read(4);
        if (boxLength == 1) {
            if (cio_read(4) != 0) {
                throw new IOException(MessageLocalization.getComposedMessage("cannot.handle.box.sizes.higher.than.2.32"));
            }
            boxLength = cio_read(4);
            if (boxLength == 0) 
                throw new IOException(MessageLocalization.getComposedMessage("unsupported.box.size.eq.eq.0"));
        }
        else if (boxLength == 0) {
            throw new ZeroBoxSizeException(MessageLocalization.getComposedMessage("unsupported.box.size.eq.eq.0"));
        }
    }
    
    /**
     * This method checks if the image is a valid JPEG and processes some parameters.
     * @throws IOException
     */
    private void processParameters() throws IOException {
        type = JPEG2000;
        originalType = ORIGINAL_JPEG2000;
        inp = null;
        try {
            if (rawData == null){
                inp = url.openStream();
            }
            else{
                inp = new java.io.ByteArrayInputStream(rawData);
            }
            boxLength = cio_read(4);
            if (boxLength == 0x0000000c) {
                isJp2 = true;
                boxType = cio_read(4);
                if (JP2_JP != boxType) {
                    throw new IOException(MessageLocalization.getComposedMessage("expected.jp.marker"));
                }
                if (0x0d0a870a != cio_read(4)) {
                    throw new IOException(MessageLocalization.getComposedMessage("error.with.jp.marker"));
                }

                jp2_read_boxhdr();
                if (JP2_FTYP != boxType) {
                    throw new IOException(MessageLocalization.getComposedMessage("expected.ftyp.marker"));
                }
                Utilities.skip(inp, boxLength - 8);
                jp2_read_boxhdr();
                do {
                    if (JP2_JP2H != boxType) {
                        if (boxType == JP2_JP2C) {
                            throw new IOException(MessageLocalization.getComposedMessage("expected.jp2h.marker"));
                        }
                        Utilities.skip(inp, boxLength - 8);
                        jp2_read_boxhdr();
                    }
                } while(JP2_JP2H != boxType);
                jp2_read_boxhdr();
                if (JP2_IHDR != boxType) {
                    throw new IOException(MessageLocalization.getComposedMessage("expected.ihdr.marker"));
                }
                scaledHeight = cio_read(4);
                setTop(scaledHeight);
                scaledWidth = cio_read(4);
                setRight(scaledWidth);
                numOfComps = cio_read(2);
                bpc = -1;
                bpc = cio_read(1);

                Utilities.skip(inp, 3);

                jp2_read_boxhdr();
                if (boxType == JP2_BPCC) {
                    bpcBoxData = new byte[boxLength - 8];
                    inp.read(bpcBoxData, 0, boxLength - 8);
                } else if (boxType == JP2_COLR) {
                    do {
                        if (colorSpecBoxes == null)
                            colorSpecBoxes = new ArrayList<ColorSpecBox>();
                        colorSpecBoxes.add(jp2_read_colr());
                        try {
                            jp2_read_boxhdr();
                        } catch (ZeroBoxSizeException ioe) {
                            //Probably we have reached the contiguous codestream box which is the last in jpeg2000 and has no length.
                        }
                    } while (JP2_COLR == boxType);
                }
            }
            else if (boxLength == 0xff4fff51) {
                Utilities.skip(inp, 4);
                int x1 = cio_read(4);
                int y1 = cio_read(4);
                int x0 = cio_read(4);
                int y0 = cio_read(4);
                Utilities.skip(inp, 16);
                colorspace = cio_read(2);
                bpc = 8;
                scaledHeight = y1 - y0;
                setTop(scaledHeight);
                scaledWidth = x1 - x0;
                setRight(scaledWidth);
            }
            else {
                throw new IOException(MessageLocalization.getComposedMessage("not.a.valid.jpeg2000.file"));
            }
        }
        finally {
            if (inp != null) {
                try{inp.close();}catch(Exception e){}
                inp = null;
            }
        }
        plainWidth = getWidth();
        plainHeight = getHeight();
    }

    private ColorSpecBox jp2_read_colr() throws IOException {
        int readBytes = 8;
        ColorSpecBox colr = new ColorSpecBox();
        for (int i = 0; i < 3; i++) {
            colr.add(cio_read(1));
            readBytes++;
        }
        if (colr.getMeth() == 1) {
            colr.add(cio_read(4));
            readBytes += 4;
        } else {
            colr.add(0);
        }

        if (boxLength - readBytes > 0) {
            byte[] colorProfile = new byte[boxLength - readBytes];
            inp.read(colorProfile, 0, boxLength - readBytes);
            colr.setColorProfile(colorProfile);
        }
        return colr;
    }

    public int getNumOfComps() {
        return numOfComps;
    }

    public byte[] getBpcBoxData() {
        return bpcBoxData;
    }

    public ArrayList<ColorSpecBox> getColorSpecBoxes() {
        return colorSpecBoxes;
    }

    /**
     * @return <code>true</code> if the image is JP2, <code>false</code> if a codestream.
     */
    public boolean isJp2() {
        return isJp2;
    }

    public static class ColorSpecBox extends ArrayList<Integer> {
        private byte[] colorProfile;

        public int getMeth() {
            return get(0).intValue();
        }

        public int getPrec() {
            return get(1).intValue();
        }

        public int getApprox() {
            return get(2).intValue();
        }

        public int getEnumCs() {
            return get(3).intValue();
        }

        public byte[] getColorProfile() {
            return colorProfile;
        }

        void setColorProfile(byte[] colorProfile) {
            this.colorProfile = colorProfile;
        }
    }

    private class ZeroBoxSizeException extends IOException {
        public ZeroBoxSizeException() {
            super();
        }

        public ZeroBoxSizeException(String s) {
            super(s);
        }
    }

}

com/itextpdf/text/Jpeg2000.java

 

⇒ iText-2.1.6.jar - iText, a JAVA-PDF library

⇐ iText layout.jar Source Code

⇑ Download and Install iText Java Library

⇑⇑ iText for PDF Generation

2021-07-03, 47739👍, 0💬