001/* 002 * $Id: CCITTG4Encoder.java 4784 2011-03-15 08:33:00Z blowagie $ 003 * 004 * This file is part of the iText (R) project. 005 * Copyright (c) 1998-2011 1T3XT BVBA 006 * Authors: Bruno Lowagie, Paulo Soares, et al. 007 * 008 * This program is free software; you can redistribute it and/or modify 009 * it under the terms of the GNU Affero General Public License version 3 010 * as published by the Free Software Foundation with the addition of the 011 * following permission added to Section 15 as permitted in Section 7(a): 012 * FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY 1T3XT, 013 * 1T3XT DISCLAIMS THE WARRANTY OF NON INFRINGEMENT OF THIRD PARTY RIGHTS. 014 * 015 * This program is distributed in the hope that it will be useful, but 016 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 017 * or FITNESS FOR A PARTICULAR PURPOSE. 018 * See the GNU Affero General Public License for more details. 019 * You should have received a copy of the GNU Affero General Public License 020 * along with this program; if not, see http://www.gnu.org/licenses or write to 021 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 022 * Boston, MA, 02110-1301 USA, or download the license from the following URL: 023 * http://itextpdf.com/terms-of-use/ 024 * 025 * The interactive user interfaces in modified source and object code versions 026 * of this program must display Appropriate Legal Notices, as required under 027 * Section 5 of the GNU Affero General Public License. 028 * 029 * In accordance with Section 7(b) of the GNU Affero General Public License, 030 * a covered work must retain the producer line in every PDF that is created 031 * or manipulated using iText. 032 * 033 * You can be released from the requirements of the license by purchasing 034 * a commercial license. Buying such a license is mandatory as soon as you 035 * develop commercial activities involving the iText software without 036 * disclosing the source code of your own applications. 037 * These activities include: offering paid services to customers as an ASP, 038 * serving PDFs on the fly in a web application, shipping iText with a closed 039 * source product. 040 * 041 * For more information, please contact iText Software Corp. at this 042 * address: sales@itextpdf.com 043 */ 044package com.itextpdf.text.pdf.codec; 045 046import com.itextpdf.text.pdf.ByteBuffer; 047 048/** 049 * Encodes data in the CCITT G4 FAX format. 050 */ 051public class CCITTG4Encoder { 052 private int rowbytes; 053 private int rowpixels; 054 private int bit = 8; 055 private int data; 056 private byte[] refline; 057 private ByteBuffer outBuf = new ByteBuffer(1024); 058 private byte[] dataBp; 059 private int offsetData; 060 private int sizeData; 061 062 /** 063 * Creates a new encoder. 064 * @param width the line width 065 */ 066 public CCITTG4Encoder(int width) { 067 rowpixels = width; 068 rowbytes = (rowpixels + 7) / 8; 069 refline = new byte[rowbytes]; 070 } 071 072 /** 073 * Encodes a number of lines. 074 * @param data the data to be encoded 075 * @param offset the offset into the data 076 * @param size the size of the data to be encoded 077 */ 078 public void fax4Encode(byte[] data, int offset, int size) { 079 dataBp = data; 080 offsetData = offset; 081 sizeData = size; 082 while (sizeData > 0) { 083 Fax3Encode2DRow(); 084 System.arraycopy(dataBp, offsetData, refline, 0, rowbytes); 085 offsetData += rowbytes; 086 sizeData -= rowbytes; 087 } 088 } 089 090 091 /** 092 * Encodes a full image. 093 * @param data the data to encode 094 * @param width the image width 095 * @param height the image height 096 * @return the encoded image 097 */ 098 public static byte[] compress(byte[] data, int width, int height) { 099 CCITTG4Encoder g4 = new CCITTG4Encoder(width); 100 g4.fax4Encode(data, 0, g4.rowbytes * height); 101 return g4.close(); 102 } 103 104 /** 105 * Encodes a number of lines. 106 * @param data the data to be encoded 107 * @param height the number of lines to encode 108 */ 109 public void fax4Encode(byte[] data, int height) { 110 fax4Encode(data, 0, rowbytes * height); 111 } 112 113 private void putcode(int[] table) { 114 putBits(table[CODE], table[LENGTH]); 115 } 116 117 private void putspan(int span, int[][] tab) { 118 int code, length; 119 120 while (span >= 2624) { 121 int[] te = tab[63 + (2560>>6)]; 122 code = te[CODE]; 123 length = te[LENGTH]; 124 putBits(code, length); 125 span -= te[RUNLEN]; 126 } 127 if (span >= 64) { 128 int[] te = tab[63 + (span>>6)]; 129 code = te[CODE]; 130 length = te[LENGTH]; 131 putBits(code, length); 132 span -= te[RUNLEN]; 133 } 134 code = tab[span][CODE]; 135 length = tab[span][LENGTH]; 136 putBits(code, length); 137 } 138 139 private void putBits(int bits, int length) { 140 while (length > bit) { 141 data |= bits >> (length - bit); 142 length -= bit; 143 outBuf.append((byte)data); 144 data = 0; 145 bit = 8; 146 } 147 data |= (bits & msbmask[length]) << (bit - length); 148 bit -= length; 149 if (bit == 0) { 150 outBuf.append((byte)data); 151 data = 0; 152 bit = 8; 153 } 154 } 155 156 private void Fax3Encode2DRow() { 157 int a0 = 0; 158 int a1 = (pixel(dataBp, offsetData, 0) != 0 ? 0 : finddiff(dataBp, offsetData, 0, rowpixels, 0)); 159 int b1 = (pixel(refline, 0, 0) != 0 ? 0 : finddiff(refline, 0, 0, rowpixels, 0)); 160 int a2, b2; 161 162 for (;;) { 163 b2 = finddiff2(refline, 0, b1, rowpixels, pixel(refline, 0,b1)); 164 if (b2 >= a1) { 165 int d = b1 - a1; 166 if (!(-3 <= d && d <= 3)) { /* horizontal mode */ 167 a2 = finddiff2(dataBp, offsetData, a1, rowpixels, pixel(dataBp, offsetData,a1)); 168 putcode(horizcode); 169 if (a0+a1 == 0 || pixel(dataBp, offsetData, a0) == 0) { 170 putspan(a1-a0, TIFFFaxWhiteCodes); 171 putspan(a2-a1, TIFFFaxBlackCodes); 172 } else { 173 putspan(a1-a0, TIFFFaxBlackCodes); 174 putspan(a2-a1, TIFFFaxWhiteCodes); 175 } 176 a0 = a2; 177 } else { /* vertical mode */ 178 putcode(vcodes[d+3]); 179 a0 = a1; 180 } 181 } else { /* pass mode */ 182 putcode(passcode); 183 a0 = b2; 184 } 185 if (a0 >= rowpixels) 186 break; 187 a1 = finddiff(dataBp, offsetData, a0, rowpixels, pixel(dataBp, offsetData,a0)); 188 b1 = finddiff(refline, 0, a0, rowpixels, pixel(dataBp, offsetData,a0) ^ 1); 189 b1 = finddiff(refline, 0, b1, rowpixels, pixel(dataBp, offsetData,a0)); 190 } 191 } 192 193 private void Fax4PostEncode() { 194 putBits(EOL, 12); 195 putBits(EOL, 12); 196 if (bit != 8) { 197 outBuf.append((byte)data); 198 data = 0; 199 bit = 8; 200 } 201 } 202 203 /** 204 * Closes the encoder and returns the encoded data. 205 * @return the encoded data 206 */ 207 public byte[] close() { 208 Fax4PostEncode(); 209 return outBuf.toByteArray(); 210 } 211 212 private int pixel(byte[] data, int offset, int bit) { 213 if (bit >= rowpixels) 214 return 0; 215 return ((data[offset + (bit >> 3)] & 0xff) >> (7-((bit)&7))) & 1; 216 } 217 218 private static int find1span(byte[] bp, int offset, int bs, int be) { 219 int bits = be - bs; 220 int n, span; 221 222 int pos = offset + (bs >> 3); 223 /* 224 * Check partial byte on lhs. 225 */ 226 if (bits > 0 && (n = (bs & 7)) != 0) { 227 span = oneruns[(bp[pos] << n) & 0xff]; 228 if (span > 8-n) /* table value too generous */ 229 span = 8-n; 230 if (span > bits) /* constrain span to bit range */ 231 span = bits; 232 if (n+span < 8) /* doesn't extend to edge of byte */ 233 return span; 234 bits -= span; 235 pos++; 236 } else 237 span = 0; 238 /* 239 * Scan full bytes for all 1's. 240 */ 241 while (bits >= 8) { 242 if (bp[pos] != -1) /* end of run */ 243 return (span + oneruns[bp[pos] & 0xff]); 244 span += 8; 245 bits -= 8; 246 pos++; 247 } 248 /* 249 * Check partial byte on rhs. 250 */ 251 if (bits > 0) { 252 n = oneruns[bp[pos] & 0xff]; 253 span += (n > bits ? bits : n); 254 } 255 return span; 256 } 257 258 private static int find0span(byte[] bp, int offset, int bs, int be) { 259 int bits = be - bs; 260 int n, span; 261 262 int pos = offset + (bs >> 3); 263 /* 264 * Check partial byte on lhs. 265 */ 266 if (bits > 0 && (n = (bs & 7)) != 0) { 267 span = zeroruns[(bp[pos] << n) & 0xff]; 268 if (span > 8-n) /* table value too generous */ 269 span = 8-n; 270 if (span > bits) /* constrain span to bit range */ 271 span = bits; 272 if (n+span < 8) /* doesn't extend to edge of byte */ 273 return span; 274 bits -= span; 275 pos++; 276 } else 277 span = 0; 278 /* 279 * Scan full bytes for all 1's. 280 */ 281 while (bits >= 8) { 282 if (bp[pos] != 0) /* end of run */ 283 return (span + zeroruns[bp[pos] & 0xff]); 284 span += 8; 285 bits -= 8; 286 pos++; 287 } 288 /* 289 * Check partial byte on rhs. 290 */ 291 if (bits > 0) { 292 n = zeroruns[bp[pos] & 0xff]; 293 span += (n > bits ? bits : n); 294 } 295 return span; 296 } 297 298 private static int finddiff(byte[] bp, int offset, int bs, int be, int color) { 299 return bs + (color != 0 ? find1span(bp, offset, bs, be) : find0span(bp, offset, bs, be)); 300 } 301 302 private static int finddiff2(byte[] bp, int offset, int bs, int be, int color) { 303 return bs < be ? finddiff(bp, offset, bs, be, color) : be; 304 } 305 306 private static byte zeroruns[] = { 307 8, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, /* 0x00 - 0x0f */ 308 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* 0x10 - 0x1f */ 309 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /* 0x20 - 0x2f */ 310 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /* 0x30 - 0x3f */ 311 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x40 - 0x4f */ 312 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x50 - 0x5f */ 313 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x60 - 0x6f */ 314 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x70 - 0x7f */ 315 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x80 - 0x8f */ 316 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x90 - 0x9f */ 317 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xa0 - 0xaf */ 318 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xb0 - 0xbf */ 319 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xc0 - 0xcf */ 320 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xd0 - 0xdf */ 321 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xe0 - 0xef */ 322 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 /* 0xf0 - 0xff */ 323 }; 324 325 private static byte oneruns[] = { 326 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x00 - 0x0f */ 327 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x10 - 0x1f */ 328 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x20 - 0x2f */ 329 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x30 - 0x3f */ 330 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x40 - 0x4f */ 331 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x50 - 0x5f */ 332 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x60 - 0x6f */ 333 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x70 - 0x7f */ 334 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x80 - 0x8f */ 335 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x90 - 0x9f */ 336 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0xa0 - 0xaf */ 337 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0xb0 - 0xbf */ 338 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /* 0xc0 - 0xcf */ 339 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /* 0xd0 - 0xdf */ 340 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* 0xe0 - 0xef */ 341 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 7, 8 /* 0xf0 - 0xff */ 342 }; 343 344 private static final int LENGTH = 0; /* bit length of g3 code */ 345 private static final int CODE = 1; /* g3 code */ 346 private static final int RUNLEN = 2; /* run length in bits */ 347 348 private static final int EOL = 0x001; /* EOL code value - 0000 0000 0000 1 */ 349 350 /* status values returned instead of a run length */ 351 private static final int G3CODE_EOL = -1; /* NB: ACT_EOL - ACT_WRUNT */ 352 private static final int G3CODE_INVALID = -2; /* NB: ACT_INVALID - ACT_WRUNT */ 353 private static final int G3CODE_EOF = -3; /* end of input data */ 354 private static final int G3CODE_INCOMP = -4; /* incomplete run code */ 355 356 private int[][] TIFFFaxWhiteCodes = { 357 { 8, 0x35, 0 }, /* 0011 0101 */ 358 { 6, 0x7, 1 }, /* 0001 11 */ 359 { 4, 0x7, 2 }, /* 0111 */ 360 { 4, 0x8, 3 }, /* 1000 */ 361 { 4, 0xB, 4 }, /* 1011 */ 362 { 4, 0xC, 5 }, /* 1100 */ 363 { 4, 0xE, 6 }, /* 1110 */ 364 { 4, 0xF, 7 }, /* 1111 */ 365 { 5, 0x13, 8 }, /* 1001 1 */ 366 { 5, 0x14, 9 }, /* 1010 0 */ 367 { 5, 0x7, 10 }, /* 0011 1 */ 368 { 5, 0x8, 11 }, /* 0100 0 */ 369 { 6, 0x8, 12 }, /* 0010 00 */ 370 { 6, 0x3, 13 }, /* 0000 11 */ 371 { 6, 0x34, 14 }, /* 1101 00 */ 372 { 6, 0x35, 15 }, /* 1101 01 */ 373 { 6, 0x2A, 16 }, /* 1010 10 */ 374 { 6, 0x2B, 17 }, /* 1010 11 */ 375 { 7, 0x27, 18 }, /* 0100 111 */ 376 { 7, 0xC, 19 }, /* 0001 100 */ 377 { 7, 0x8, 20 }, /* 0001 000 */ 378 { 7, 0x17, 21 }, /* 0010 111 */ 379 { 7, 0x3, 22 }, /* 0000 011 */ 380 { 7, 0x4, 23 }, /* 0000 100 */ 381 { 7, 0x28, 24 }, /* 0101 000 */ 382 { 7, 0x2B, 25 }, /* 0101 011 */ 383 { 7, 0x13, 26 }, /* 0010 011 */ 384 { 7, 0x24, 27 }, /* 0100 100 */ 385 { 7, 0x18, 28 }, /* 0011 000 */ 386 { 8, 0x2, 29 }, /* 0000 0010 */ 387 { 8, 0x3, 30 }, /* 0000 0011 */ 388 { 8, 0x1A, 31 }, /* 0001 1010 */ 389 { 8, 0x1B, 32 }, /* 0001 1011 */ 390 { 8, 0x12, 33 }, /* 0001 0010 */ 391 { 8, 0x13, 34 }, /* 0001 0011 */ 392 { 8, 0x14, 35 }, /* 0001 0100 */ 393 { 8, 0x15, 36 }, /* 0001 0101 */ 394 { 8, 0x16, 37 }, /* 0001 0110 */ 395 { 8, 0x17, 38 }, /* 0001 0111 */ 396 { 8, 0x28, 39 }, /* 0010 1000 */ 397 { 8, 0x29, 40 }, /* 0010 1001 */ 398 { 8, 0x2A, 41 }, /* 0010 1010 */ 399 { 8, 0x2B, 42 }, /* 0010 1011 */ 400 { 8, 0x2C, 43 }, /* 0010 1100 */ 401 { 8, 0x2D, 44 }, /* 0010 1101 */ 402 { 8, 0x4, 45 }, /* 0000 0100 */ 403 { 8, 0x5, 46 }, /* 0000 0101 */ 404 { 8, 0xA, 47 }, /* 0000 1010 */ 405 { 8, 0xB, 48 }, /* 0000 1011 */ 406 { 8, 0x52, 49 }, /* 0101 0010 */ 407 { 8, 0x53, 50 }, /* 0101 0011 */ 408 { 8, 0x54, 51 }, /* 0101 0100 */ 409 { 8, 0x55, 52 }, /* 0101 0101 */ 410 { 8, 0x24, 53 }, /* 0010 0100 */ 411 { 8, 0x25, 54 }, /* 0010 0101 */ 412 { 8, 0x58, 55 }, /* 0101 1000 */ 413 { 8, 0x59, 56 }, /* 0101 1001 */ 414 { 8, 0x5A, 57 }, /* 0101 1010 */ 415 { 8, 0x5B, 58 }, /* 0101 1011 */ 416 { 8, 0x4A, 59 }, /* 0100 1010 */ 417 { 8, 0x4B, 60 }, /* 0100 1011 */ 418 { 8, 0x32, 61 }, /* 0011 0010 */ 419 { 8, 0x33, 62 }, /* 0011 0011 */ 420 { 8, 0x34, 63 }, /* 0011 0100 */ 421 { 5, 0x1B, 64 }, /* 1101 1 */ 422 { 5, 0x12, 128 }, /* 1001 0 */ 423 { 6, 0x17, 192 }, /* 0101 11 */ 424 { 7, 0x37, 256 }, /* 0110 111 */ 425 { 8, 0x36, 320 }, /* 0011 0110 */ 426 { 8, 0x37, 384 }, /* 0011 0111 */ 427 { 8, 0x64, 448 }, /* 0110 0100 */ 428 { 8, 0x65, 512 }, /* 0110 0101 */ 429 { 8, 0x68, 576 }, /* 0110 1000 */ 430 { 8, 0x67, 640 }, /* 0110 0111 */ 431 { 9, 0xCC, 704 }, /* 0110 0110 0 */ 432 { 9, 0xCD, 768 }, /* 0110 0110 1 */ 433 { 9, 0xD2, 832 }, /* 0110 1001 0 */ 434 { 9, 0xD3, 896 }, /* 0110 1001 1 */ 435 { 9, 0xD4, 960 }, /* 0110 1010 0 */ 436 { 9, 0xD5, 1024 }, /* 0110 1010 1 */ 437 { 9, 0xD6, 1088 }, /* 0110 1011 0 */ 438 { 9, 0xD7, 1152 }, /* 0110 1011 1 */ 439 { 9, 0xD8, 1216 }, /* 0110 1100 0 */ 440 { 9, 0xD9, 1280 }, /* 0110 1100 1 */ 441 { 9, 0xDA, 1344 }, /* 0110 1101 0 */ 442 { 9, 0xDB, 1408 }, /* 0110 1101 1 */ 443 { 9, 0x98, 1472 }, /* 0100 1100 0 */ 444 { 9, 0x99, 1536 }, /* 0100 1100 1 */ 445 { 9, 0x9A, 1600 }, /* 0100 1101 0 */ 446 { 6, 0x18, 1664 }, /* 0110 00 */ 447 { 9, 0x9B, 1728 }, /* 0100 1101 1 */ 448 { 11, 0x8, 1792 }, /* 0000 0001 000 */ 449 { 11, 0xC, 1856 }, /* 0000 0001 100 */ 450 { 11, 0xD, 1920 }, /* 0000 0001 101 */ 451 { 12, 0x12, 1984 }, /* 0000 0001 0010 */ 452 { 12, 0x13, 2048 }, /* 0000 0001 0011 */ 453 { 12, 0x14, 2112 }, /* 0000 0001 0100 */ 454 { 12, 0x15, 2176 }, /* 0000 0001 0101 */ 455 { 12, 0x16, 2240 }, /* 0000 0001 0110 */ 456 { 12, 0x17, 2304 }, /* 0000 0001 0111 */ 457 { 12, 0x1C, 2368 }, /* 0000 0001 1100 */ 458 { 12, 0x1D, 2432 }, /* 0000 0001 1101 */ 459 { 12, 0x1E, 2496 }, /* 0000 0001 1110 */ 460 { 12, 0x1F, 2560 }, /* 0000 0001 1111 */ 461 { 12, 0x1, G3CODE_EOL }, /* 0000 0000 0001 */ 462 { 9, 0x1, G3CODE_INVALID }, /* 0000 0000 1 */ 463 { 10, 0x1, G3CODE_INVALID }, /* 0000 0000 01 */ 464 { 11, 0x1, G3CODE_INVALID }, /* 0000 0000 001 */ 465 { 12, 0x0, G3CODE_INVALID } /* 0000 0000 0000 */ 466 }; 467 468 private int[][] TIFFFaxBlackCodes = { 469 { 10, 0x37, 0 }, /* 0000 1101 11 */ 470 { 3, 0x2, 1 }, /* 010 */ 471 { 2, 0x3, 2 }, /* 11 */ 472 { 2, 0x2, 3 }, /* 10 */ 473 { 3, 0x3, 4 }, /* 011 */ 474 { 4, 0x3, 5 }, /* 0011 */ 475 { 4, 0x2, 6 }, /* 0010 */ 476 { 5, 0x3, 7 }, /* 0001 1 */ 477 { 6, 0x5, 8 }, /* 0001 01 */ 478 { 6, 0x4, 9 }, /* 0001 00 */ 479 { 7, 0x4, 10 }, /* 0000 100 */ 480 { 7, 0x5, 11 }, /* 0000 101 */ 481 { 7, 0x7, 12 }, /* 0000 111 */ 482 { 8, 0x4, 13 }, /* 0000 0100 */ 483 { 8, 0x7, 14 }, /* 0000 0111 */ 484 { 9, 0x18, 15 }, /* 0000 1100 0 */ 485 { 10, 0x17, 16 }, /* 0000 0101 11 */ 486 { 10, 0x18, 17 }, /* 0000 0110 00 */ 487 { 10, 0x8, 18 }, /* 0000 0010 00 */ 488 { 11, 0x67, 19 }, /* 0000 1100 111 */ 489 { 11, 0x68, 20 }, /* 0000 1101 000 */ 490 { 11, 0x6C, 21 }, /* 0000 1101 100 */ 491 { 11, 0x37, 22 }, /* 0000 0110 111 */ 492 { 11, 0x28, 23 }, /* 0000 0101 000 */ 493 { 11, 0x17, 24 }, /* 0000 0010 111 */ 494 { 11, 0x18, 25 }, /* 0000 0011 000 */ 495 { 12, 0xCA, 26 }, /* 0000 1100 1010 */ 496 { 12, 0xCB, 27 }, /* 0000 1100 1011 */ 497 { 12, 0xCC, 28 }, /* 0000 1100 1100 */ 498 { 12, 0xCD, 29 }, /* 0000 1100 1101 */ 499 { 12, 0x68, 30 }, /* 0000 0110 1000 */ 500 { 12, 0x69, 31 }, /* 0000 0110 1001 */ 501 { 12, 0x6A, 32 }, /* 0000 0110 1010 */ 502 { 12, 0x6B, 33 }, /* 0000 0110 1011 */ 503 { 12, 0xD2, 34 }, /* 0000 1101 0010 */ 504 { 12, 0xD3, 35 }, /* 0000 1101 0011 */ 505 { 12, 0xD4, 36 }, /* 0000 1101 0100 */ 506 { 12, 0xD5, 37 }, /* 0000 1101 0101 */ 507 { 12, 0xD6, 38 }, /* 0000 1101 0110 */ 508 { 12, 0xD7, 39 }, /* 0000 1101 0111 */ 509 { 12, 0x6C, 40 }, /* 0000 0110 1100 */ 510 { 12, 0x6D, 41 }, /* 0000 0110 1101 */ 511 { 12, 0xDA, 42 }, /* 0000 1101 1010 */ 512 { 12, 0xDB, 43 }, /* 0000 1101 1011 */ 513 { 12, 0x54, 44 }, /* 0000 0101 0100 */ 514 { 12, 0x55, 45 }, /* 0000 0101 0101 */ 515 { 12, 0x56, 46 }, /* 0000 0101 0110 */ 516 { 12, 0x57, 47 }, /* 0000 0101 0111 */ 517 { 12, 0x64, 48 }, /* 0000 0110 0100 */ 518 { 12, 0x65, 49 }, /* 0000 0110 0101 */ 519 { 12, 0x52, 50 }, /* 0000 0101 0010 */ 520 { 12, 0x53, 51 }, /* 0000 0101 0011 */ 521 { 12, 0x24, 52 }, /* 0000 0010 0100 */ 522 { 12, 0x37, 53 }, /* 0000 0011 0111 */ 523 { 12, 0x38, 54 }, /* 0000 0011 1000 */ 524 { 12, 0x27, 55 }, /* 0000 0010 0111 */ 525 { 12, 0x28, 56 }, /* 0000 0010 1000 */ 526 { 12, 0x58, 57 }, /* 0000 0101 1000 */ 527 { 12, 0x59, 58 }, /* 0000 0101 1001 */ 528 { 12, 0x2B, 59 }, /* 0000 0010 1011 */ 529 { 12, 0x2C, 60 }, /* 0000 0010 1100 */ 530 { 12, 0x5A, 61 }, /* 0000 0101 1010 */ 531 { 12, 0x66, 62 }, /* 0000 0110 0110 */ 532 { 12, 0x67, 63 }, /* 0000 0110 0111 */ 533 { 10, 0xF, 64 }, /* 0000 0011 11 */ 534 { 12, 0xC8, 128 }, /* 0000 1100 1000 */ 535 { 12, 0xC9, 192 }, /* 0000 1100 1001 */ 536 { 12, 0x5B, 256 }, /* 0000 0101 1011 */ 537 { 12, 0x33, 320 }, /* 0000 0011 0011 */ 538 { 12, 0x34, 384 }, /* 0000 0011 0100 */ 539 { 12, 0x35, 448 }, /* 0000 0011 0101 */ 540 { 13, 0x6C, 512 }, /* 0000 0011 0110 0 */ 541 { 13, 0x6D, 576 }, /* 0000 0011 0110 1 */ 542 { 13, 0x4A, 640 }, /* 0000 0010 0101 0 */ 543 { 13, 0x4B, 704 }, /* 0000 0010 0101 1 */ 544 { 13, 0x4C, 768 }, /* 0000 0010 0110 0 */ 545 { 13, 0x4D, 832 }, /* 0000 0010 0110 1 */ 546 { 13, 0x72, 896 }, /* 0000 0011 1001 0 */ 547 { 13, 0x73, 960 }, /* 0000 0011 1001 1 */ 548 { 13, 0x74, 1024 }, /* 0000 0011 1010 0 */ 549 { 13, 0x75, 1088 }, /* 0000 0011 1010 1 */ 550 { 13, 0x76, 1152 }, /* 0000 0011 1011 0 */ 551 { 13, 0x77, 1216 }, /* 0000 0011 1011 1 */ 552 { 13, 0x52, 1280 }, /* 0000 0010 1001 0 */ 553 { 13, 0x53, 1344 }, /* 0000 0010 1001 1 */ 554 { 13, 0x54, 1408 }, /* 0000 0010 1010 0 */ 555 { 13, 0x55, 1472 }, /* 0000 0010 1010 1 */ 556 { 13, 0x5A, 1536 }, /* 0000 0010 1101 0 */ 557 { 13, 0x5B, 1600 }, /* 0000 0010 1101 1 */ 558 { 13, 0x64, 1664 }, /* 0000 0011 0010 0 */ 559 { 13, 0x65, 1728 }, /* 0000 0011 0010 1 */ 560 { 11, 0x8, 1792 }, /* 0000 0001 000 */ 561 { 11, 0xC, 1856 }, /* 0000 0001 100 */ 562 { 11, 0xD, 1920 }, /* 0000 0001 101 */ 563 { 12, 0x12, 1984 }, /* 0000 0001 0010 */ 564 { 12, 0x13, 2048 }, /* 0000 0001 0011 */ 565 { 12, 0x14, 2112 }, /* 0000 0001 0100 */ 566 { 12, 0x15, 2176 }, /* 0000 0001 0101 */ 567 { 12, 0x16, 2240 }, /* 0000 0001 0110 */ 568 { 12, 0x17, 2304 }, /* 0000 0001 0111 */ 569 { 12, 0x1C, 2368 }, /* 0000 0001 1100 */ 570 { 12, 0x1D, 2432 }, /* 0000 0001 1101 */ 571 { 12, 0x1E, 2496 }, /* 0000 0001 1110 */ 572 { 12, 0x1F, 2560 }, /* 0000 0001 1111 */ 573 { 12, 0x1, G3CODE_EOL }, /* 0000 0000 0001 */ 574 { 9, 0x1, G3CODE_INVALID }, /* 0000 0000 1 */ 575 { 10, 0x1, G3CODE_INVALID }, /* 0000 0000 01 */ 576 { 11, 0x1, G3CODE_INVALID }, /* 0000 0000 001 */ 577 { 12, 0x0, G3CODE_INVALID } /* 0000 0000 0000 */ 578 }; 579 580 private int[] horizcode = 581 { 3, 0x1, 0 }; /* 001 */ 582 private int[] passcode = 583 { 4, 0x1, 0 }; /* 0001 */ 584 private int[][] vcodes = { 585 { 7, 0x03, 0 }, /* 0000 011 */ 586 { 6, 0x03, 0 }, /* 0000 11 */ 587 { 3, 0x03, 0 }, /* 011 */ 588 { 1, 0x1, 0 }, /* 1 */ 589 { 3, 0x2, 0 }, /* 010 */ 590 { 6, 0x02, 0 }, /* 0000 10 */ 591 { 7, 0x02, 0 } /* 0000 010 */ 592 }; 593 private int[] msbmask = 594 { 0x00, 0x01, 0x03, 0x07, 0x0f, 0x1f, 0x3f, 0x7f, 0xff }; 595}