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com.aowagie.text.pdf.codec.CCITTG4Encoder Maven / Gradle / Ivy
/*
* Copyright 2005 by Paulo Soares.
*
* The contents of this file are subject to the Mozilla Public License Version 1.1
* (the "License"); you may not use this file except in compliance with the License.
* You may obtain a copy of the License at http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the License.
*
* The Original Code is 'iText, a free JAVA-PDF library'.
*
* The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
* the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
* All Rights Reserved.
* Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
* are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
*
* Contributor(s): all the names of the contributors are added in the source code
* where applicable.
*
* Alternatively, the contents of this file may be used under the terms of the
* LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
* provisions of LGPL are applicable instead of those above. If you wish to
* allow use of your version of this file only under the terms of the LGPL
* License and not to allow others to use your version of this file under
* the MPL, indicate your decision by deleting the provisions above and
* replace them with the notice and other provisions required by the LGPL.
* If you do not delete the provisions above, a recipient may use your version
* of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the MPL as stated above or under the terms of the GNU
* Library General Public License as published by the Free Software Foundation;
* either version 2 of the License, or any later version.
*
* This library 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 Library general Public License for more
* details.
*
* If you didn't download this code from the following link, you should check if
* you aren't using an obsolete version:
* http://www.lowagie.com/iText/
*
* This code is base in the libtiff encoder
*/
package com.aowagie.text.pdf.codec;
import com.aowagie.text.pdf.ByteBuffer;
/**
* Encodes data in the CCITT G4 FAX format.
*/
public class CCITTG4Encoder {
private final int rowbytes;
private final int rowpixels;
private int bit = 8;
private int data;
private final byte[] refline;
private final ByteBuffer outBuf = new ByteBuffer(1024);
private byte[] dataBp;
private int offsetData;
private int sizeData;
/**
* Creates a new encoder.
* @param width the line width
*/
CCITTG4Encoder(final int width) {
this.rowpixels = width;
this.rowbytes = (this.rowpixels + 7) / 8;
this.refline = new byte[this.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
*/
private void fax4Encode(final byte[] data, final int offset, final int size) {
this.dataBp = data;
this.offsetData = offset;
this.sizeData = size;
while (this.sizeData > 0) {
Fax3Encode2DRow();
System.arraycopy(this.dataBp, this.offsetData, this.refline, 0, this.rowbytes);
this.offsetData += this.rowbytes;
this.sizeData -= this.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(final byte[] data, final int width, final int height) {
final 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
*/
void fax4Encode(final byte[] data, final int height) {
fax4Encode(data, 0, this.rowbytes * height);
}
private void putcode(final int[] table) {
putBits(table[CODE], table[LENGTH]);
}
private void putspan(int span, final int[][] tab) {
int code, length;
while (span >= 2624) {
final int[] te = tab[63 + (2560>>6)];
code = te[CODE];
length = te[LENGTH];
putBits(code, length);
span -= te[RUNLEN];
}
if (span >= 64) {
final 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(final int bits, int length) {
while (length > this.bit) {
this.data |= bits >> length - this.bit;
length -= this.bit;
this.outBuf.append((byte)this.data);
this.data = 0;
this.bit = 8;
}
this.data |= (bits & this.msbmask[length]) << this.bit - length;
this.bit -= length;
if (this.bit == 0) {
this.outBuf.append((byte)this.data);
this.data = 0;
this.bit = 8;
}
}
private void Fax3Encode2DRow() {
int a0 = 0;
int a1 = pixel(this.dataBp, this.offsetData, 0) != 0 ? 0 : finddiff(this.dataBp, this.offsetData, 0, this.rowpixels, 0);
int b1 = pixel(this.refline, 0, 0) != 0 ? 0 : finddiff(this.refline, 0, 0, this.rowpixels, 0);
int a2, b2;
for (;;) {
b2 = finddiff2(this.refline, 0, b1, this.rowpixels, pixel(this.refline, 0,b1));
if (b2 >= a1) {
final int d = b1 - a1;
if (!(-3 <= d && d <= 3)) { /* horizontal mode */
a2 = finddiff2(this.dataBp, this.offsetData, a1, this.rowpixels, pixel(this.dataBp, this.offsetData,a1));
putcode(this.horizcode);
if (a0+a1 == 0 || pixel(this.dataBp, this.offsetData, a0) == 0) {
putspan(a1-a0, this.TIFFFaxWhiteCodes);
putspan(a2-a1, this.TIFFFaxBlackCodes);
} else {
putspan(a1-a0, this.TIFFFaxBlackCodes);
putspan(a2-a1, this.TIFFFaxWhiteCodes);
}
a0 = a2;
} else { /* vertical mode */
putcode(this.vcodes[d+3]);
a0 = a1;
}
} else { /* pass mode */
putcode(this.passcode);
a0 = b2;
}
if (a0 >= this.rowpixels) {
break;
}
a1 = finddiff(this.dataBp, this.offsetData, a0, this.rowpixels, pixel(this.dataBp, this.offsetData,a0));
b1 = finddiff(this.refline, 0, a0, this.rowpixels, pixel(this.dataBp, this.offsetData,a0) ^ 1);
b1 = finddiff(this.refline, 0, b1, this.rowpixels, pixel(this.dataBp, this.offsetData,a0));
}
}
private void Fax4PostEncode() {
putBits(EOL, 12);
putBits(EOL, 12);
if (this.bit != 8) {
this.outBuf.append((byte)this.data);
this.data = 0;
this.bit = 8;
}
}
/**
* Closes the encoder and returns the encoded data.
* @return the encoded data
*/
byte[] close() {
Fax4PostEncode();
return this.outBuf.toByteArray();
}
private int pixel(final byte[] data, final int offset, final int bit) {
if (bit >= this.rowpixels) {
return 0;
}
return (data[offset + (bit >> 3)] & 0xff) >> 7-(bit&7) & 1;
}
private static int find1span(final byte[] bp, final int offset, final int bs, final 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) {
span = 8-n;
}
if (span > bits) {
span = bits;
}
if (n+span < 8) {
return span;
}
bits -= span;
pos++;
} else {
span = 0;
}
/*
* Scan full bytes for all 1's.
*/
while (bits >= 8) {
if (bp[pos] != -1) {
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(final byte[] bp, final int offset, final int bs, final 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) {
span = 8-n;
}
if (span > bits) {
span = bits;
}
if (n+span < 8) {
return span;
}
bits -= span;
pos++;
} else {
span = 0;
}
/*
* Scan full bytes for all 1's.
*/
while (bits >= 8) {
if (bp[pos] != 0) {
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(final byte[] bp, final int offset, final int bs, final int be, final int color) {
return bs + (color != 0 ? find1span(bp, offset, bs, be) : find0span(bp, offset, bs, be));
}
private static int finddiff2(final byte[] bp, final int offset, final int bs, final int be, final 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 final 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 final 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 final int[] horizcode =
{ 3, 0x1, 0 }; /* 001 */
private final int[] passcode =
{ 4, 0x1, 0 }; /* 0001 */
private final 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 final int[] msbmask =
{ 0x00, 0x01, 0x03, 0x07, 0x0f, 0x1f, 0x3f, 0x7f, 0xff };
}
