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/pdf/codec/CCITTG4Encoder.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.pdf.codec;

import com.itextpdf.text.pdf.ByteBuffer;

/**
 * Encodes data in the CCITT G4 FAX format.
 */
public class CCITTG4Encoder {
    private int rowbytes;
    private int rowpixels;
    private int bit = 8;
    private int data;
    private byte[] refline;
    private ByteBuffer outBuf = new ByteBuffer(1024);
    private byte[] dataBp;
    private int offsetData;
    private int sizeData;
    
    /**
     * Creates a new encoder.
     * @param width the line width
     */    
    public CCITTG4Encoder(int width) {
        rowpixels = width;
        rowbytes = (rowpixels + 7) / 8;
        refline = new byte[rowbytes];
    }
    
    /**
     * Encodes a number of lines.
     * @param data the data to be encoded
     * @param offset the offset into the data
     * @param size the size of the data to be encoded
     */    
    public void fax4Encode(byte[] data, int offset, int size) {
        dataBp = data;
        offsetData = offset;
        sizeData = size;
        while (sizeData > 0) {
            Fax3Encode2DRow();
            System.arraycopy(dataBp, offsetData, refline, 0, rowbytes);
            offsetData += rowbytes;
            sizeData -= rowbytes;
        }
    }
    

    /**
     * Encodes a full image.
     * @param data the data to encode
     * @param width the image width
     * @param height the image height
     * @return the encoded image
     */    
    public static byte[] compress(byte[] data, int width, int height) {
        CCITTG4Encoder g4 = new CCITTG4Encoder(width);
        g4.fax4Encode(data, 0, g4.rowbytes * height);
        return g4.close();
    }
    
    /**
     * Encodes a number of lines.
     * @param data the data to be encoded
     * @param height the number of lines to encode
     */    
    public void fax4Encode(byte[] data, int height) {
        fax4Encode(data, 0, rowbytes * height);
    }

    private void putcode(int[] table) {
        putBits(table[CODE], table[LENGTH]);
    }
    
    private void putspan(int span, int[][] tab) {
        int code, length;
        
        while (span >= 2624) {
            int[] te = tab[63 + (2560>>6)];
            code = te[CODE];
            length = te[LENGTH];
            putBits(code, length);
            span -= te[RUNLEN];
        }
        if (span >= 64) {
            int[] te = tab[63 + (span>>6)];
            code = te[CODE];
            length = te[LENGTH];
            putBits(code, length);
            span -= te[RUNLEN];
        }
        code = tab[span][CODE];
        length = tab[span][LENGTH];
        putBits(code, length);
    }
    
    private void putBits(int bits, int length) {
        while (length > bit) {
            data |= bits >> (length - bit);
            length -= bit;
            outBuf.append((byte)data);
            data = 0;
            bit = 8;
        }
        data |= (bits & msbmask[length]) << (bit - length);
        bit -= length;
        if (bit == 0) {
            outBuf.append((byte)data);
            data = 0;
            bit = 8;
        }
    }
    
    private void Fax3Encode2DRow() {
        int a0 = 0;
        int a1 = (pixel(dataBp, offsetData, 0) != 0 ? 0 : finddiff(dataBp, offsetData, 0, rowpixels, 0));
        int b1 = (pixel(refline, 0, 0) != 0 ? 0 : finddiff(refline, 0, 0, rowpixels, 0));
        int a2, b2;
        
        for (;;) {
            b2 = finddiff2(refline, 0, b1, rowpixels, pixel(refline, 0,b1));
            if (b2 >= a1) {
                int d = b1 - a1;
                if (!(-3 <= d && d <= 3)) {	/* horizontal mode */
                    a2 = finddiff2(dataBp, offsetData, a1, rowpixels, pixel(dataBp, offsetData,a1));
                    putcode(horizcode);
                    if (a0+a1 == 0 || pixel(dataBp, offsetData, a0) == 0) {
                        putspan(a1-a0, TIFFFaxWhiteCodes);
                        putspan(a2-a1, TIFFFaxBlackCodes);
                    } else {
                        putspan(a1-a0, TIFFFaxBlackCodes);
                        putspan(a2-a1, TIFFFaxWhiteCodes);
                    }
                    a0 = a2;
                } else {			/* vertical mode */
                    putcode(vcodes[d+3]);
                    a0 = a1;
                }
            } else {				/* pass mode */
                putcode(passcode);
                a0 = b2;
            }
            if (a0 >= rowpixels)
                break;
            a1 = finddiff(dataBp, offsetData, a0, rowpixels, pixel(dataBp, offsetData,a0));
            b1 = finddiff(refline, 0, a0, rowpixels, pixel(dataBp, offsetData,a0) ^ 1);
            b1 = finddiff(refline, 0, b1, rowpixels, pixel(dataBp, offsetData,a0));
        }
    }
    
    private void Fax4PostEncode() {
        putBits(EOL, 12);
        putBits(EOL, 12);
        if (bit != 8) {
            outBuf.append((byte)data);
            data = 0;
            bit = 8;
        }
    }
    
    /**
     * Closes the encoder and returns the encoded data.
     * @return the encoded data
     */    
    public byte[] close() {
        Fax4PostEncode();
        return outBuf.toByteArray();
    }
    
    private int pixel(byte[] data, int offset, int bit) {
        if (bit >= rowpixels)
            return 0;
        return ((data[offset + (bit >> 3)] & 0xff) >> (7-((bit)&7))) & 1;
    }
    
    private static int find1span(byte[] bp, int offset, int bs, int be) {
        int bits = be - bs;
        int n, span;
        
        int pos = offset + (bs >> 3);
        /*
         * Check partial byte on lhs.
         */
        if (bits > 0 && (n = (bs & 7)) != 0) {
            span = oneruns[(bp[pos] << n) & 0xff];
            if (span > 8-n)		/* table value too generous */
                span = 8-n;
            if (span > bits)	/* constrain span to bit range */
                span = bits;
            if (n+span < 8)		/* doesn't extend to edge of byte */
                return span;
            bits -= span;
            pos++;
        } else
            span = 0;
        /*
         * Scan full bytes for all 1's.
         */
        while (bits >= 8) {
            if (bp[pos] != -1)	/* end of run */
                return (span + oneruns[bp[pos] & 0xff]);
            span += 8;
            bits -= 8;
            pos++;
        }
        /*
         * Check partial byte on rhs.
         */
        if (bits > 0) {
            n = oneruns[bp[pos] & 0xff];
            span += (n > bits ? bits : n);
        }
        return span;
    }
    
    private static int find0span(byte[] bp, int offset, int bs, int be) {
        int bits = be - bs;
        int n, span;
        
        int pos = offset + (bs >> 3);
        /*
         * Check partial byte on lhs.
         */
        if (bits > 0 && (n = (bs & 7)) != 0) {
            span = zeroruns[(bp[pos] << n) & 0xff];
            if (span > 8-n)		/* table value too generous */
                span = 8-n;
            if (span > bits)	/* constrain span to bit range */
                span = bits;
            if (n+span < 8)		/* doesn't extend to edge of byte */
                return span;
            bits -= span;
            pos++;
        } else
            span = 0;
        /*
         * Scan full bytes for all 1's.
         */
        while (bits >= 8) {
            if (bp[pos] != 0)	/* end of run */
                return (span + zeroruns[bp[pos] & 0xff]);
            span += 8;
            bits -= 8;
            pos++;
        }
        /*
         * Check partial byte on rhs.
         */
        if (bits > 0) {
            n = zeroruns[bp[pos] & 0xff];
            span += (n > bits ? bits : n);
        }
        return span;
    }
    
    private static int finddiff(byte[] bp, int offset, int bs, int be, int color) {
        return bs + (color != 0 ? find1span(bp, offset, bs, be) : find0span(bp, offset, bs, be));
    }
    
    private static int finddiff2(byte[] bp, int offset, int bs, int be, int color) {
        return bs < be ? finddiff(bp, offset, bs, be, color) : be;
    }
    
    private static byte zeroruns[] = {
        8, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4,	/* 0x00 - 0x0f */
        3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,	/* 0x10 - 0x1f */
        2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,	/* 0x20 - 0x2f */
        2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,	/* 0x30 - 0x3f */
        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,	/* 0x40 - 0x4f */
        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,	/* 0x50 - 0x5f */
        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,	/* 0x60 - 0x6f */
        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,	/* 0x70 - 0x7f */
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	/* 0x80 - 0x8f */
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	/* 0x90 - 0x9f */
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	/* 0xa0 - 0xaf */
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	/* 0xb0 - 0xbf */
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	/* 0xc0 - 0xcf */
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	/* 0xd0 - 0xdf */
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	/* 0xe0 - 0xef */
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0	/* 0xf0 - 0xff */
    };
    
    private static byte oneruns[] = {
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	/* 0x00 - 0x0f */
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	/* 0x10 - 0x1f */
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	/* 0x20 - 0x2f */
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	/* 0x30 - 0x3f */
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	/* 0x40 - 0x4f */
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	/* 0x50 - 0x5f */
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	/* 0x60 - 0x6f */
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	/* 0x70 - 0x7f */
        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,	/* 0x80 - 0x8f */
        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,	/* 0x90 - 0x9f */
        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,	/* 0xa0 - 0xaf */
        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,	/* 0xb0 - 0xbf */
        2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,	/* 0xc0 - 0xcf */
        2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,	/* 0xd0 - 0xdf */
        3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,	/* 0xe0 - 0xef */
        4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 7, 8	/* 0xf0 - 0xff */
    };

    private static final int LENGTH = 0; /* bit length of g3 code */
    private static final int CODE = 1;   /* g3 code */
    private static final int RUNLEN = 2; /* run length in bits */

    private static final int EOL = 0x001; /* EOL code value - 0000 0000 0000 1 */

    /* status values returned instead of a run length */
    private static final int G3CODE_EOL	= -1;     /* NB: ACT_EOL - ACT_WRUNT */
    private static final int G3CODE_INVALID = -2; /* NB: ACT_INVALID - ACT_WRUNT */
    private static final int G3CODE_EOF = -3;     /* end of input data */
    private static final int G3CODE_INCOMP = -4;  /* incomplete run code */

    private int[][] TIFFFaxWhiteCodes = {
        { 8, 0x35, 0 },	/* 0011 0101 */
        { 6, 0x7, 1 },	/* 0001 11 */
        { 4, 0x7, 2 },	/* 0111 */
        { 4, 0x8, 3 },	/* 1000 */
        { 4, 0xB, 4 },	/* 1011 */
        { 4, 0xC, 5 },	/* 1100 */
        { 4, 0xE, 6 },	/* 1110 */
        { 4, 0xF, 7 },	/* 1111 */
        { 5, 0x13, 8 },	/* 1001 1 */
        { 5, 0x14, 9 },	/* 1010 0 */
        { 5, 0x7, 10 },	/* 0011 1 */
        { 5, 0x8, 11 },	/* 0100 0 */
        { 6, 0x8, 12 },	/* 0010 00 */
        { 6, 0x3, 13 },	/* 0000 11 */
        { 6, 0x34, 14 },	/* 1101 00 */
        { 6, 0x35, 15 },	/* 1101 01 */
        { 6, 0x2A, 16 },	/* 1010 10 */
        { 6, 0x2B, 17 },	/* 1010 11 */
        { 7, 0x27, 18 },	/* 0100 111 */
        { 7, 0xC, 19 },	/* 0001 100 */
        { 7, 0x8, 20 },	/* 0001 000 */
        { 7, 0x17, 21 },	/* 0010 111 */
        { 7, 0x3, 22 },	/* 0000 011 */
        { 7, 0x4, 23 },	/* 0000 100 */
        { 7, 0x28, 24 },	/* 0101 000 */
        { 7, 0x2B, 25 },	/* 0101 011 */
        { 7, 0x13, 26 },	/* 0010 011 */
        { 7, 0x24, 27 },	/* 0100 100 */
        { 7, 0x18, 28 },	/* 0011 000 */
        { 8, 0x2, 29 },	/* 0000 0010 */
        { 8, 0x3, 30 },	/* 0000 0011 */
        { 8, 0x1A, 31 },	/* 0001 1010 */
        { 8, 0x1B, 32 },	/* 0001 1011 */
        { 8, 0x12, 33 },	/* 0001 0010 */
        { 8, 0x13, 34 },	/* 0001 0011 */
        { 8, 0x14, 35 },	/* 0001 0100 */
        { 8, 0x15, 36 },	/* 0001 0101 */
        { 8, 0x16, 37 },	/* 0001 0110 */
        { 8, 0x17, 38 },	/* 0001 0111 */
        { 8, 0x28, 39 },	/* 0010 1000 */
        { 8, 0x29, 40 },	/* 0010 1001 */
        { 8, 0x2A, 41 },	/* 0010 1010 */
        { 8, 0x2B, 42 },	/* 0010 1011 */
        { 8, 0x2C, 43 },	/* 0010 1100 */
        { 8, 0x2D, 44 },	/* 0010 1101 */
        { 8, 0x4, 45 },	/* 0000 0100 */
        { 8, 0x5, 46 },	/* 0000 0101 */
        { 8, 0xA, 47 },	/* 0000 1010 */
        { 8, 0xB, 48 },	/* 0000 1011 */
        { 8, 0x52, 49 },	/* 0101 0010 */
        { 8, 0x53, 50 },	/* 0101 0011 */
        { 8, 0x54, 51 },	/* 0101 0100 */
        { 8, 0x55, 52 },	/* 0101 0101 */
        { 8, 0x24, 53 },	/* 0010 0100 */
        { 8, 0x25, 54 },	/* 0010 0101 */
        { 8, 0x58, 55 },	/* 0101 1000 */
        { 8, 0x59, 56 },	/* 0101 1001 */
        { 8, 0x5A, 57 },	/* 0101 1010 */
        { 8, 0x5B, 58 },	/* 0101 1011 */
        { 8, 0x4A, 59 },	/* 0100 1010 */
        { 8, 0x4B, 60 },	/* 0100 1011 */
        { 8, 0x32, 61 },	/* 0011 0010 */
        { 8, 0x33, 62 },	/* 0011 0011 */
        { 8, 0x34, 63 },	/* 0011 0100 */
        { 5, 0x1B, 64 },	/* 1101 1 */
        { 5, 0x12, 128 },	/* 1001 0 */
        { 6, 0x17, 192 },	/* 0101 11 */
        { 7, 0x37, 256 },	/* 0110 111 */
        { 8, 0x36, 320 },	/* 0011 0110 */
        { 8, 0x37, 384 },	/* 0011 0111 */
        { 8, 0x64, 448 },	/* 0110 0100 */
        { 8, 0x65, 512 },	/* 0110 0101 */
        { 8, 0x68, 576 },	/* 0110 1000 */
        { 8, 0x67, 640 },	/* 0110 0111 */
        { 9, 0xCC, 704 },	/* 0110 0110 0 */
        { 9, 0xCD, 768 },	/* 0110 0110 1 */
        { 9, 0xD2, 832 },	/* 0110 1001 0 */
        { 9, 0xD3, 896 },	/* 0110 1001 1 */
        { 9, 0xD4, 960 },	/* 0110 1010 0 */
        { 9, 0xD5, 1024 },	/* 0110 1010 1 */
        { 9, 0xD6, 1088 },	/* 0110 1011 0 */
        { 9, 0xD7, 1152 },	/* 0110 1011 1 */
        { 9, 0xD8, 1216 },	/* 0110 1100 0 */
        { 9, 0xD9, 1280 },	/* 0110 1100 1 */
        { 9, 0xDA, 1344 },	/* 0110 1101 0 */
        { 9, 0xDB, 1408 },	/* 0110 1101 1 */
        { 9, 0x98, 1472 },	/* 0100 1100 0 */
        { 9, 0x99, 1536 },	/* 0100 1100 1 */
        { 9, 0x9A, 1600 },	/* 0100 1101 0 */
        { 6, 0x18, 1664 },	/* 0110 00 */
        { 9, 0x9B, 1728 },	/* 0100 1101 1 */
        { 11, 0x8, 1792 },	/* 0000 0001 000 */
        { 11, 0xC, 1856 },	/* 0000 0001 100 */
        { 11, 0xD, 1920 },	/* 0000 0001 101 */
        { 12, 0x12, 1984 },	/* 0000 0001 0010 */
        { 12, 0x13, 2048 },	/* 0000 0001 0011 */
        { 12, 0x14, 2112 },	/* 0000 0001 0100 */
        { 12, 0x15, 2176 },	/* 0000 0001 0101 */
        { 12, 0x16, 2240 },	/* 0000 0001 0110 */
        { 12, 0x17, 2304 },	/* 0000 0001 0111 */
        { 12, 0x1C, 2368 },	/* 0000 0001 1100 */
        { 12, 0x1D, 2432 },	/* 0000 0001 1101 */
        { 12, 0x1E, 2496 },	/* 0000 0001 1110 */
        { 12, 0x1F, 2560 },	/* 0000 0001 1111 */
        { 12, 0x1, G3CODE_EOL },	/* 0000 0000 0001 */
        { 9, 0x1, G3CODE_INVALID },	/* 0000 0000 1 */
        { 10, 0x1, G3CODE_INVALID },	/* 0000 0000 01 */
        { 11, 0x1, G3CODE_INVALID },	/* 0000 0000 001 */
        { 12, 0x0, G3CODE_INVALID }	/* 0000 0000 0000 */
    };

    private int[][] TIFFFaxBlackCodes = {
        { 10, 0x37, 0 },	/* 0000 1101 11 */
        { 3, 0x2, 1 },	/* 010 */
        { 2, 0x3, 2 },	/* 11 */
        { 2, 0x2, 3 },	/* 10 */
        { 3, 0x3, 4 },	/* 011 */
        { 4, 0x3, 5 },	/* 0011 */
        { 4, 0x2, 6 },	/* 0010 */
        { 5, 0x3, 7 },	/* 0001 1 */
        { 6, 0x5, 8 },	/* 0001 01 */
        { 6, 0x4, 9 },	/* 0001 00 */
        { 7, 0x4, 10 },	/* 0000 100 */
        { 7, 0x5, 11 },	/* 0000 101 */
        { 7, 0x7, 12 },	/* 0000 111 */
        { 8, 0x4, 13 },	/* 0000 0100 */
        { 8, 0x7, 14 },	/* 0000 0111 */
        { 9, 0x18, 15 },	/* 0000 1100 0 */
        { 10, 0x17, 16 },	/* 0000 0101 11 */
        { 10, 0x18, 17 },	/* 0000 0110 00 */
        { 10, 0x8, 18 },	/* 0000 0010 00 */
        { 11, 0x67, 19 },	/* 0000 1100 111 */
        { 11, 0x68, 20 },	/* 0000 1101 000 */
        { 11, 0x6C, 21 },	/* 0000 1101 100 */
        { 11, 0x37, 22 },	/* 0000 0110 111 */
        { 11, 0x28, 23 },	/* 0000 0101 000 */
        { 11, 0x17, 24 },	/* 0000 0010 111 */
        { 11, 0x18, 25 },	/* 0000 0011 000 */
        { 12, 0xCA, 26 },	/* 0000 1100 1010 */
        { 12, 0xCB, 27 },	/* 0000 1100 1011 */
        { 12, 0xCC, 28 },	/* 0000 1100 1100 */
        { 12, 0xCD, 29 },	/* 0000 1100 1101 */
        { 12, 0x68, 30 },	/* 0000 0110 1000 */
        { 12, 0x69, 31 },	/* 0000 0110 1001 */
        { 12, 0x6A, 32 },	/* 0000 0110 1010 */
        { 12, 0x6B, 33 },	/* 0000 0110 1011 */
        { 12, 0xD2, 34 },	/* 0000 1101 0010 */
        { 12, 0xD3, 35 },	/* 0000 1101 0011 */
        { 12, 0xD4, 36 },	/* 0000 1101 0100 */
        { 12, 0xD5, 37 },	/* 0000 1101 0101 */
        { 12, 0xD6, 38 },	/* 0000 1101 0110 */
        { 12, 0xD7, 39 },	/* 0000 1101 0111 */
        { 12, 0x6C, 40 },	/* 0000 0110 1100 */
        { 12, 0x6D, 41 },	/* 0000 0110 1101 */
        { 12, 0xDA, 42 },	/* 0000 1101 1010 */
        { 12, 0xDB, 43 },	/* 0000 1101 1011 */
        { 12, 0x54, 44 },	/* 0000 0101 0100 */
        { 12, 0x55, 45 },	/* 0000 0101 0101 */
        { 12, 0x56, 46 },	/* 0000 0101 0110 */
        { 12, 0x57, 47 },	/* 0000 0101 0111 */
        { 12, 0x64, 48 },	/* 0000 0110 0100 */
        { 12, 0x65, 49 },	/* 0000 0110 0101 */
        { 12, 0x52, 50 },	/* 0000 0101 0010 */
        { 12, 0x53, 51 },	/* 0000 0101 0011 */
        { 12, 0x24, 52 },	/* 0000 0010 0100 */
        { 12, 0x37, 53 },	/* 0000 0011 0111 */
        { 12, 0x38, 54 },	/* 0000 0011 1000 */
        { 12, 0x27, 55 },	/* 0000 0010 0111 */
        { 12, 0x28, 56 },	/* 0000 0010 1000 */
        { 12, 0x58, 57 },	/* 0000 0101 1000 */
        { 12, 0x59, 58 },	/* 0000 0101 1001 */
        { 12, 0x2B, 59 },	/* 0000 0010 1011 */
        { 12, 0x2C, 60 },	/* 0000 0010 1100 */
        { 12, 0x5A, 61 },	/* 0000 0101 1010 */
        { 12, 0x66, 62 },	/* 0000 0110 0110 */
        { 12, 0x67, 63 },	/* 0000 0110 0111 */
        { 10, 0xF, 64 },	/* 0000 0011 11 */
        { 12, 0xC8, 128 },	/* 0000 1100 1000 */
        { 12, 0xC9, 192 },	/* 0000 1100 1001 */
        { 12, 0x5B, 256 },	/* 0000 0101 1011 */
        { 12, 0x33, 320 },	/* 0000 0011 0011 */
        { 12, 0x34, 384 },	/* 0000 0011 0100 */
        { 12, 0x35, 448 },	/* 0000 0011 0101 */
        { 13, 0x6C, 512 },	/* 0000 0011 0110 0 */
        { 13, 0x6D, 576 },	/* 0000 0011 0110 1 */
        { 13, 0x4A, 640 },	/* 0000 0010 0101 0 */
        { 13, 0x4B, 704 },	/* 0000 0010 0101 1 */
        { 13, 0x4C, 768 },	/* 0000 0010 0110 0 */
        { 13, 0x4D, 832 },	/* 0000 0010 0110 1 */
        { 13, 0x72, 896 },	/* 0000 0011 1001 0 */
        { 13, 0x73, 960 },	/* 0000 0011 1001 1 */
        { 13, 0x74, 1024 },	/* 0000 0011 1010 0 */
        { 13, 0x75, 1088 },	/* 0000 0011 1010 1 */
        { 13, 0x76, 1152 },	/* 0000 0011 1011 0 */
        { 13, 0x77, 1216 },	/* 0000 0011 1011 1 */
        { 13, 0x52, 1280 },	/* 0000 0010 1001 0 */
        { 13, 0x53, 1344 },	/* 0000 0010 1001 1 */
        { 13, 0x54, 1408 },	/* 0000 0010 1010 0 */
        { 13, 0x55, 1472 },	/* 0000 0010 1010 1 */
        { 13, 0x5A, 1536 },	/* 0000 0010 1101 0 */
        { 13, 0x5B, 1600 },	/* 0000 0010 1101 1 */
        { 13, 0x64, 1664 },	/* 0000 0011 0010 0 */
        { 13, 0x65, 1728 },	/* 0000 0011 0010 1 */
        { 11, 0x8, 1792 },	/* 0000 0001 000 */
        { 11, 0xC, 1856 },	/* 0000 0001 100 */
        { 11, 0xD, 1920 },	/* 0000 0001 101 */
        { 12, 0x12, 1984 },	/* 0000 0001 0010 */
        { 12, 0x13, 2048 },	/* 0000 0001 0011 */
        { 12, 0x14, 2112 },	/* 0000 0001 0100 */
        { 12, 0x15, 2176 },	/* 0000 0001 0101 */
        { 12, 0x16, 2240 },	/* 0000 0001 0110 */
        { 12, 0x17, 2304 },	/* 0000 0001 0111 */
        { 12, 0x1C, 2368 },	/* 0000 0001 1100 */
        { 12, 0x1D, 2432 },	/* 0000 0001 1101 */
        { 12, 0x1E, 2496 },	/* 0000 0001 1110 */
        { 12, 0x1F, 2560 },	/* 0000 0001 1111 */
        { 12, 0x1, G3CODE_EOL },	/* 0000 0000 0001 */
        { 9, 0x1, G3CODE_INVALID },	/* 0000 0000 1 */
        { 10, 0x1, G3CODE_INVALID },	/* 0000 0000 01 */
        { 11, 0x1, G3CODE_INVALID },	/* 0000 0000 001 */
        { 12, 0x0, G3CODE_INVALID }	/* 0000 0000 0000 */
    };
    
    private int[] horizcode =
        { 3, 0x1, 0 };		/* 001 */
    private int[] passcode =
        { 4, 0x1, 0 };		/* 0001 */
    private int[][] vcodes = {
        { 7, 0x03, 0 },	/* 0000 011 */
        { 6, 0x03, 0 },	/* 0000 11 */
        { 3, 0x03, 0 },	/* 011 */
        { 1, 0x1, 0 },		/* 1 */
        { 3, 0x2, 0 },		/* 010 */
        { 6, 0x02, 0 },	/* 0000 10 */
        { 7, 0x02, 0 }		/* 0000 010 */
    };
    private int[] msbmask =
    { 0x00, 0x01, 0x03, 0x07, 0x0f, 0x1f, 0x3f, 0x7f, 0xff };
}

com/itextpdf/text/pdf/codec/CCITTG4Encoder.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, 47957👍, 0💬