📄 tifffaxdecoder.java
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/*
* Copyright (c) 2001 Sun Microsystems, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* -Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* -Redistribution in binary form must reproduct the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of Sun Microsystems, Inc. or the names of contributors may
* be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY
* IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
* NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE
* LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
* OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS
* LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT,
* INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
* CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF
* OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that Software is not designed,licensed or intended for use in
* the design, construction, operation or maintenance of any nuclear facility.
*/
package com.lowagie.text.pdf.codec;
public class TIFFFaxDecoder {
private int bitPointer, bytePointer;
private byte[] data;
private int w, h;
private int fillOrder;
// Data structures needed to store changing elements for the previous
// and the current scanline
private int changingElemSize = 0;
private int prevChangingElems[];
private int currChangingElems[];
// Element at which to start search in getNextChangingElement
private int lastChangingElement = 0;
private int compression = 2;
// Variables set by T4Options
private int uncompressedMode = 0;
private int fillBits = 0;
private int oneD;
static int table1[] = {
0x00, // 0 bits are left in first byte - SHOULD NOT HAPPEN
0x01, // 1 bits are left in first byte
0x03, // 2 bits are left in first byte
0x07, // 3 bits are left in first byte
0x0f, // 4 bits are left in first byte
0x1f, // 5 bits are left in first byte
0x3f, // 6 bits are left in first byte
0x7f, // 7 bits are left in first byte
0xff // 8 bits are left in first byte
};
static int table2[] = {
0x00, // 0
0x80, // 1
0xc0, // 2
0xe0, // 3
0xf0, // 4
0xf8, // 5
0xfc, // 6
0xfe, // 7
0xff // 8
};
// Table to be used when fillOrder = 2, for flipping bytes.
static byte flipTable[] = {
0, -128, 64, -64, 32, -96, 96, -32,
16, -112, 80, -48, 48, -80, 112, -16,
8, -120, 72, -56, 40, -88, 104, -24,
24, -104, 88, -40, 56, -72, 120, -8,
4, -124, 68, -60, 36, -92, 100, -28,
20, -108, 84, -44, 52, -76, 116, -12,
12, -116, 76, -52, 44, -84, 108, -20,
28, -100, 92, -36, 60, -68, 124, -4,
2, -126, 66, -62, 34, -94, 98, -30,
18, -110, 82, -46, 50, -78, 114, -14,
10, -118, 74, -54, 42, -86, 106, -22,
26, -102, 90, -38, 58, -70, 122, -6,
6, -122, 70, -58, 38, -90, 102, -26,
22, -106, 86, -42, 54, -74, 118, -10,
14, -114, 78, -50, 46, -82, 110, -18,
30, -98, 94, -34, 62, -66, 126, -2,
1, -127, 65, -63, 33, -95, 97, -31,
17, -111, 81, -47, 49, -79, 113, -15,
9, -119, 73, -55, 41, -87, 105, -23,
25, -103, 89, -39, 57, -71, 121, -7,
5, -123, 69, -59, 37, -91, 101, -27,
21, -107, 85, -43, 53, -75, 117, -11,
13, -115, 77, -51, 45, -83, 109, -19,
29, -99, 93, -35, 61, -67, 125, -3,
3, -125, 67, -61, 35, -93, 99, -29,
19, -109, 83, -45, 51, -77, 115, -13,
11, -117, 75, -53, 43, -85, 107, -21,
27, -101, 91, -37, 59, -69, 123, -5,
7, -121, 71, -57, 39, -89, 103, -25,
23, -105, 87, -41, 55, -73, 119, -9,
15, -113, 79, -49, 47, -81, 111, -17,
31, -97, 95, -33, 63, -65, 127, -1,
};
// The main 10 bit white runs lookup table
static short white[] = {
// 0 - 7
6430, 6400, 6400, 6400, 3225, 3225, 3225, 3225,
// 8 - 15
944, 944, 944, 944, 976, 976, 976, 976,
// 16 - 23
1456, 1456, 1456, 1456, 1488, 1488, 1488, 1488,
// 24 - 31
718, 718, 718, 718, 718, 718, 718, 718,
// 32 - 39
750, 750, 750, 750, 750, 750, 750, 750,
// 40 - 47
1520, 1520, 1520, 1520, 1552, 1552, 1552, 1552,
// 48 - 55
428, 428, 428, 428, 428, 428, 428, 428,
// 56 - 63
428, 428, 428, 428, 428, 428, 428, 428,
// 64 - 71
654, 654, 654, 654, 654, 654, 654, 654,
// 72 - 79
1072, 1072, 1072, 1072, 1104, 1104, 1104, 1104,
// 80 - 87
1136, 1136, 1136, 1136, 1168, 1168, 1168, 1168,
// 88 - 95
1200, 1200, 1200, 1200, 1232, 1232, 1232, 1232,
// 96 - 103
622, 622, 622, 622, 622, 622, 622, 622,
// 104 - 111
1008, 1008, 1008, 1008, 1040, 1040, 1040, 1040,
// 112 - 119
44, 44, 44, 44, 44, 44, 44, 44,
// 120 - 127
44, 44, 44, 44, 44, 44, 44, 44,
// 128 - 135
396, 396, 396, 396, 396, 396, 396, 396,
// 136 - 143
396, 396, 396, 396, 396, 396, 396, 396,
// 144 - 151
1712, 1712, 1712, 1712, 1744, 1744, 1744, 1744,
// 152 - 159
846, 846, 846, 846, 846, 846, 846, 846,
// 160 - 167
1264, 1264, 1264, 1264, 1296, 1296, 1296, 1296,
// 168 - 175
1328, 1328, 1328, 1328, 1360, 1360, 1360, 1360,
// 176 - 183
1392, 1392, 1392, 1392, 1424, 1424, 1424, 1424,
// 184 - 191
686, 686, 686, 686, 686, 686, 686, 686,
// 192 - 199
910, 910, 910, 910, 910, 910, 910, 910,
// 200 - 207
1968, 1968, 1968, 1968, 2000, 2000, 2000, 2000,
// 208 - 215
2032, 2032, 2032, 2032, 16, 16, 16, 16,
// 216 - 223
10257, 10257, 10257, 10257, 12305, 12305, 12305, 12305,
// 224 - 231
330, 330, 330, 330, 330, 330, 330, 330,
// 232 - 239
330, 330, 330, 330, 330, 330, 330, 330,
// 240 - 247
330, 330, 330, 330, 330, 330, 330, 330,
// 248 - 255
330, 330, 330, 330, 330, 330, 330, 330,
// 256 - 263
362, 362, 362, 362, 362, 362, 362, 362,
// 264 - 271
362, 362, 362, 362, 362, 362, 362, 362,
// 272 - 279
362, 362, 362, 362, 362, 362, 362, 362,
// 280 - 287
362, 362, 362, 362, 362, 362, 362, 362,
// 288 - 295
878, 878, 878, 878, 878, 878, 878, 878,
// 296 - 303
1904, 1904, 1904, 1904, 1936, 1936, 1936, 1936,
// 304 - 311
-18413, -18413, -16365, -16365, -14317, -14317, -10221, -10221,
// 312 - 319
590, 590, 590, 590, 590, 590, 590, 590,
// 320 - 327
782, 782, 782, 782, 782, 782, 782, 782,
// 328 - 335
1584, 1584, 1584, 1584, 1616, 1616, 1616, 1616,
// 336 - 343
1648, 1648, 1648, 1648, 1680, 1680, 1680, 1680,
// 344 - 351
814, 814, 814, 814, 814, 814, 814, 814,
// 352 - 359
1776, 1776, 1776, 1776, 1808, 1808, 1808, 1808,
// 360 - 367
1840, 1840, 1840, 1840, 1872, 1872, 1872, 1872,
// 368 - 375
6157, 6157, 6157, 6157, 6157, 6157, 6157, 6157,
// 376 - 383
6157, 6157, 6157, 6157, 6157, 6157, 6157, 6157,
// 384 - 391
-12275, -12275, -12275, -12275, -12275, -12275, -12275, -12275,
// 392 - 399
-12275, -12275, -12275, -12275, -12275, -12275, -12275, -12275,
// 400 - 407
14353, 14353, 14353, 14353, 16401, 16401, 16401, 16401,
// 408 - 415
22547, 22547, 24595, 24595, 20497, 20497, 20497, 20497,
// 416 - 423
18449, 18449, 18449, 18449, 26643, 26643, 28691, 28691,
// 424 - 431
30739, 30739, -32749, -32749, -30701, -30701, -28653, -28653,
// 432 - 439
-26605, -26605, -24557, -24557, -22509, -22509, -20461, -20461,
// 440 - 447
8207, 8207, 8207, 8207, 8207, 8207, 8207, 8207,
// 448 - 455
72, 72, 72, 72, 72, 72, 72, 72,
// 456 - 463
72, 72, 72, 72, 72, 72, 72, 72,
// 464 - 471
72, 72, 72, 72, 72, 72, 72, 72,
// 472 - 479
72, 72, 72, 72, 72, 72, 72, 72,
// 480 - 487
72, 72, 72, 72, 72, 72, 72, 72,
// 488 - 495
72, 72, 72, 72, 72, 72, 72, 72,
// 496 - 503
72, 72, 72, 72, 72, 72, 72, 72,
// 504 - 511
72, 72, 72, 72, 72, 72, 72, 72,
// 512 - 519
104, 104, 104, 104, 104, 104, 104, 104,
// 520 - 527
104, 104, 104, 104, 104, 104, 104, 104,
// 528 - 535
104, 104, 104, 104, 104, 104, 104, 104,
// 536 - 543
104, 104, 104, 104, 104, 104, 104, 104,
// 544 - 551
104, 104, 104, 104, 104, 104, 104, 104,
// 552 - 559
104, 104, 104, 104, 104, 104, 104, 104,
// 560 - 567
104, 104, 104, 104, 104, 104, 104, 104,
// 568 - 575
104, 104, 104, 104, 104, 104, 104, 104,
// 576 - 583
4107, 4107, 4107, 4107, 4107, 4107, 4107, 4107,
// 584 - 591
4107, 4107, 4107, 4107, 4107, 4107, 4107, 4107,
// 592 - 599
4107, 4107, 4107, 4107, 4107, 4107, 4107, 4107,
// 600 - 607
4107, 4107, 4107, 4107, 4107, 4107, 4107, 4107,
// 608 - 615
266, 266, 266, 266, 266, 266, 266, 266,
// 616 - 623
266, 266, 266, 266, 266, 266, 266, 266,
// 624 - 631
266, 266, 266, 266, 266, 266, 266, 266,
// 632 - 639
266, 266, 266, 266, 266, 266, 266, 266,
// 640 - 647
298, 298, 298, 298, 298, 298, 298, 298,
// 648 - 655
298, 298, 298, 298, 298, 298, 298, 298,
// 656 - 663
298, 298, 298, 298, 298, 298, 298, 298,
// 664 - 671
298, 298, 298, 298, 298, 298, 298, 298,
// 672 - 679
524, 524, 524, 524, 524, 524, 524, 524,
// 680 - 687
524, 524, 524, 524, 524, 524, 524, 524,
// 688 - 695
556, 556, 556, 556, 556, 556, 556, 556,
// 696 - 703
556, 556, 556, 556, 556, 556, 556, 556,
// 704 - 711
136, 136, 136, 136, 136, 136, 136, 136,
// 712 - 719
136, 136, 136, 136, 136, 136, 136, 136,
// 720 - 727
136, 136, 136, 136, 136, 136, 136, 136,
// 728 - 735
136, 136, 136, 136, 136, 136, 136, 136,
// 736 - 743
136, 136, 136, 136, 136, 136, 136, 136,
// 744 - 751
136, 136, 136, 136, 136, 136, 136, 136,
// 752 - 759
136, 136, 136, 136, 136, 136, 136, 136,
// 760 - 767
136, 136, 136, 136, 136, 136, 136, 136,
// 768 - 775
168, 168, 168, 168, 168, 168, 168, 168,
// 776 - 783
168, 168, 168, 168, 168, 168, 168, 168,
// 784 - 791
168, 168, 168, 168, 168, 168, 168, 168,
// 792 - 799
168, 168, 168, 168, 168, 168, 168, 168,
// 800 - 807
168, 168, 168, 168, 168, 168, 168, 168,
// 808 - 815
168, 168, 168, 168, 168, 168, 168, 168,
// 816 - 823
168, 168, 168, 168, 168, 168, 168, 168,
// 824 - 831
168, 168, 168, 168, 168, 168, 168, 168,
// 832 - 839
460, 460, 460, 460, 460, 460, 460, 460,
// 840 - 847
460, 460, 460, 460, 460, 460, 460, 460,
// 848 - 855
492, 492, 492, 492, 492, 492, 492, 492,
// 856 - 863
492, 492, 492, 492, 492, 492, 492, 492,
// 864 - 871
2059, 2059, 2059, 2059, 2059, 2059, 2059, 2059,
// 872 - 879
2059, 2059, 2059, 2059, 2059, 2059, 2059, 2059,
// 880 - 887
2059, 2059, 2059, 2059, 2059, 2059, 2059, 2059,
// 888 - 895
2059, 2059, 2059, 2059, 2059, 2059, 2059, 2059,
// 896 - 903
200, 200, 200, 200, 200, 200, 200, 200,
// 904 - 911
200, 200, 200, 200, 200, 200, 200, 200,
// 912 - 919
200, 200, 200, 200, 200, 200, 200, 200,
// 920 - 927
200, 200, 200, 200, 200, 200, 200, 200,
// 928 - 935
200, 200, 200, 200, 200, 200, 200, 200,
// 936 - 943
200, 200, 200, 200, 200, 200, 200, 200,
// 944 - 951
200, 200, 200, 200, 200, 200, 200, 200,
// 952 - 959
200, 200, 200, 200, 200, 200, 200, 200,
// 960 - 967
232, 232, 232, 232, 232, 232, 232, 232,
// 968 - 975
232, 232, 232, 232, 232, 232, 232, 232,
// 976 - 983
232, 232, 232, 232, 232, 232, 232, 232,
// 984 - 991
232, 232, 232, 232, 232, 232, 232, 232,
// 992 - 999
232, 232, 232, 232, 232, 232, 232, 232,
// 1000 - 1007
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