5 #include "../../../C/Alloc.h"
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7 #include "BZip2Decoder.h"
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10 namespace NCompress {
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16 static const UInt32 kNumThreadsMax = 4;
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18 static const UInt32 kBufferSize = (1 << 17);
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20 static const UInt16 kRandNums[512] = {
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21 619, 720, 127, 481, 931, 816, 813, 233, 566, 247,
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22 985, 724, 205, 454, 863, 491, 741, 242, 949, 214,
\r
23 733, 859, 335, 708, 621, 574, 73, 654, 730, 472,
\r
24 419, 436, 278, 496, 867, 210, 399, 680, 480, 51,
\r
25 878, 465, 811, 169, 869, 675, 611, 697, 867, 561,
\r
26 862, 687, 507, 283, 482, 129, 807, 591, 733, 623,
\r
27 150, 238, 59, 379, 684, 877, 625, 169, 643, 105,
\r
28 170, 607, 520, 932, 727, 476, 693, 425, 174, 647,
\r
29 73, 122, 335, 530, 442, 853, 695, 249, 445, 515,
\r
30 909, 545, 703, 919, 874, 474, 882, 500, 594, 612,
\r
31 641, 801, 220, 162, 819, 984, 589, 513, 495, 799,
\r
32 161, 604, 958, 533, 221, 400, 386, 867, 600, 782,
\r
33 382, 596, 414, 171, 516, 375, 682, 485, 911, 276,
\r
34 98, 553, 163, 354, 666, 933, 424, 341, 533, 870,
\r
35 227, 730, 475, 186, 263, 647, 537, 686, 600, 224,
\r
36 469, 68, 770, 919, 190, 373, 294, 822, 808, 206,
\r
37 184, 943, 795, 384, 383, 461, 404, 758, 839, 887,
\r
38 715, 67, 618, 276, 204, 918, 873, 777, 604, 560,
\r
39 951, 160, 578, 722, 79, 804, 96, 409, 713, 940,
\r
40 652, 934, 970, 447, 318, 353, 859, 672, 112, 785,
\r
41 645, 863, 803, 350, 139, 93, 354, 99, 820, 908,
\r
42 609, 772, 154, 274, 580, 184, 79, 626, 630, 742,
\r
43 653, 282, 762, 623, 680, 81, 927, 626, 789, 125,
\r
44 411, 521, 938, 300, 821, 78, 343, 175, 128, 250,
\r
45 170, 774, 972, 275, 999, 639, 495, 78, 352, 126,
\r
46 857, 956, 358, 619, 580, 124, 737, 594, 701, 612,
\r
47 669, 112, 134, 694, 363, 992, 809, 743, 168, 974,
\r
48 944, 375, 748, 52, 600, 747, 642, 182, 862, 81,
\r
49 344, 805, 988, 739, 511, 655, 814, 334, 249, 515,
\r
50 897, 955, 664, 981, 649, 113, 974, 459, 893, 228,
\r
51 433, 837, 553, 268, 926, 240, 102, 654, 459, 51,
\r
52 686, 754, 806, 760, 493, 403, 415, 394, 687, 700,
\r
53 946, 670, 656, 610, 738, 392, 760, 799, 887, 653,
\r
54 978, 321, 576, 617, 626, 502, 894, 679, 243, 440,
\r
55 680, 879, 194, 572, 640, 724, 926, 56, 204, 700,
\r
56 707, 151, 457, 449, 797, 195, 791, 558, 945, 679,
\r
57 297, 59, 87, 824, 713, 663, 412, 693, 342, 606,
\r
58 134, 108, 571, 364, 631, 212, 174, 643, 304, 329,
\r
59 343, 97, 430, 751, 497, 314, 983, 374, 822, 928,
\r
60 140, 206, 73, 263, 980, 736, 876, 478, 430, 305,
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61 170, 514, 364, 692, 829, 82, 855, 953, 676, 246,
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62 369, 970, 294, 750, 807, 827, 150, 790, 288, 923,
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63 804, 378, 215, 828, 592, 281, 565, 555, 710, 82,
\r
64 896, 831, 547, 261, 524, 462, 293, 465, 502, 56,
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65 661, 821, 976, 991, 658, 869, 905, 758, 745, 193,
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66 768, 550, 608, 933, 378, 286, 215, 979, 792, 961,
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67 61, 688, 793, 644, 986, 403, 106, 366, 905, 644,
\r
68 372, 567, 466, 434, 645, 210, 389, 550, 919, 135,
\r
69 780, 773, 635, 389, 707, 100, 626, 958, 165, 504,
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70 920, 176, 193, 713, 857, 265, 203, 50, 668, 108,
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71 645, 990, 626, 197, 510, 357, 358, 850, 858, 364,
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75 bool CState::Alloc()
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78 Counters = (UInt32 *)::BigAlloc((256 + kBlockSizeMax) * sizeof(UInt32));
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79 return (Counters != 0);
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84 ::BigFree(Counters);
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88 UInt32 CDecoder::ReadBits(unsigned numBits) { return m_InStream.ReadBits(numBits); }
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89 Byte CDecoder::ReadByte() {return (Byte)ReadBits(8); }
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90 bool CDecoder::ReadBit() { return ReadBits(1) != 0; }
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92 UInt32 CDecoder::ReadCrc()
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95 for (int i = 0; i < 4; i++)
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103 static UInt32 NO_INLINE ReadBits(NBitm::CDecoder<CInBuffer> *m_InStream, unsigned num)
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105 return m_InStream->ReadBits(num);
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108 static UInt32 NO_INLINE ReadBit(NBitm::CDecoder<CInBuffer> *m_InStream)
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110 return m_InStream->ReadBits(1);
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113 static HRESULT NO_INLINE ReadBlock(NBitm::CDecoder<CInBuffer> *m_InStream,
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114 UInt32 *CharCounters, UInt32 blockSizeMax, Byte *m_Selectors, CHuffmanDecoder *m_HuffmanDecoders,
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115 UInt32 *blockSizeRes, UInt32 *origPtrRes, bool *randRes)
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118 *randRes = ReadBit(m_InStream) ? true : false;
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119 *origPtrRes = ReadBits(m_InStream, kNumOrigBits);
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121 // in original code it compares OrigPtr to (UInt32)(10 + blockSizeMax)) : why ?
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122 if (*origPtrRes >= blockSizeMax)
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132 for (i = 0; i < 16; i++)
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133 inUse16[i] = (Byte)ReadBit(m_InStream);
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134 for (i = 0; i < 256; i++)
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135 if (inUse16[i >> 4])
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137 if (ReadBit(m_InStream))
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138 mtf.Add(numInUse++, (Byte)i);
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142 // mtf.Init(numInUse);
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144 int alphaSize = numInUse + 2;
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146 int numTables = ReadBits(m_InStream, kNumTablesBits);
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147 if (numTables < kNumTablesMin || numTables > kNumTablesMax)
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150 UInt32 numSelectors = ReadBits(m_InStream, kNumSelectorsBits);
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151 if (numSelectors < 1 || numSelectors > kNumSelectorsMax)
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155 Byte mtfPos[kNumTablesMax];
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158 mtfPos[t] = (Byte)t;
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159 while(++t < numTables);
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164 while (ReadBit(m_InStream))
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165 if (++j >= numTables)
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167 Byte tmp = mtfPos[j];
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169 mtfPos[j] = mtfPos[j - 1];
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170 m_Selectors[i] = mtfPos[0] = tmp;
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172 while(++i < numSelectors);
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178 Byte lens[kMaxAlphaSize];
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179 int len = (int)ReadBits(m_InStream, kNumLevelsBits);
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181 for (i = 0; i < alphaSize; i++)
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185 if (len < 1 || len > kMaxHuffmanLen)
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187 if (!ReadBit(m_InStream))
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189 len += 1 - (int)(ReadBit(m_InStream) << 1);
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191 lens[i] = (Byte)len;
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193 for (; i < kMaxAlphaSize; i++)
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195 if(!m_HuffmanDecoders[t].SetCodeLengths(lens))
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198 while(++t < numTables);
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201 for (int i = 0; i < 256; i++)
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202 CharCounters[i] = 0;
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205 UInt32 blockSize = 0;
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207 UInt32 groupIndex = 0;
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208 UInt32 groupSize = 0;
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209 CHuffmanDecoder *huffmanDecoder = 0;
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211 UInt32 runCounter = 0;
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215 if (groupSize == 0)
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217 if (groupIndex >= numSelectors)
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219 groupSize = kGroupSize;
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220 huffmanDecoder = &m_HuffmanDecoders[m_Selectors[groupIndex++]];
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224 UInt32 nextSym = huffmanDecoder->DecodeSymbol(m_InStream);
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228 runCounter += ((UInt32)(nextSym + 1) << runPower++);
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229 if (blockSizeMax - blockSize < runCounter)
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233 if (runCounter != 0)
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235 UInt32 b = (UInt32)mtf.GetHead();
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236 CharCounters[b] += runCounter;
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238 CharCounters[256 + blockSize++] = b;
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239 while(--runCounter != 0);
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242 if (nextSym <= (UInt32)numInUse)
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244 UInt32 b = (UInt32)mtf.GetAndMove((int)nextSym - 1);
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245 if (blockSize >= blockSizeMax)
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248 CharCounters[256 + blockSize++] = b;
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250 else if (nextSym == (UInt32)numInUse + 1)
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256 *blockSizeRes = blockSize;
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257 return (*origPtrRes < blockSize) ? S_OK : S_FALSE;
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260 static void NO_INLINE DecodeBlock1(UInt32 *charCounters, UInt32 blockSize)
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264 for (UInt32 i = 0; i < 256; i++)
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266 sum += charCounters[i];
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267 charCounters[i] = sum - charCounters[i];
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271 UInt32 *tt = charCounters + 256;
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272 // Compute the T^(-1) vector
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275 tt[charCounters[tt[i] & 0xFF]++] |= (i << 8);
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276 while(++i < blockSize);
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279 static UInt32 NO_INLINE DecodeBlock2(const UInt32 *tt, UInt32 blockSize, UInt32 OrigPtr, COutBuffer &m_OutStream)
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283 // it's for speed optimization: prefetch & prevByte_init;
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284 UInt32 tPos = tt[tt[OrigPtr] >> 8];
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285 unsigned prevByte = (unsigned)(tPos & 0xFF);
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287 unsigned numReps = 0;
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291 unsigned b = (unsigned)(tPos & 0xFF);
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292 tPos = tt[tPos >> 8];
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294 if (numReps == kRleModeRepSize)
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298 crc.UpdateByte(prevByte);
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299 m_OutStream.WriteByte((Byte)prevByte);
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309 m_OutStream.WriteByte((Byte)b);
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314 m_OutStream.WriteByte((Byte)b);
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315 for (; --blockSize != 0;)
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317 b = (unsigned)(tPos & 0xFF);
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318 tPos = tt[tPos >> 8];
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320 m_OutStream.WriteByte((Byte)b);
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326 if (--blockSize == 0)
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329 b = (unsigned)(tPos & 0xFF);
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330 tPos = tt[tPos >> 8];
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332 m_OutStream.WriteByte((Byte)b);
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338 if (--blockSize == 0)
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341 b = (unsigned)(tPos & 0xFF);
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342 tPos = tt[tPos >> 8];
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344 m_OutStream.WriteByte((Byte)b);
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353 if (blockSize == 0)
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356 b = (unsigned)(tPos & 0xFF);
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357 tPos = tt[tPos >> 8];
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361 crc.UpdateByte(prevByte);
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362 m_OutStream.WriteByte((Byte)prevByte);
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366 while(--blockSize != 0);
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367 return crc.GetDigest();
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370 static UInt32 NO_INLINE DecodeBlock2Rand(const UInt32 *tt, UInt32 blockSize, UInt32 OrigPtr, COutBuffer &m_OutStream)
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374 UInt32 randIndex = 1;
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375 UInt32 randToGo = kRandNums[0] - 2;
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377 unsigned numReps = 0;
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379 // it's for speed optimization: prefetch & prevByte_init;
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380 UInt32 tPos = tt[tt[OrigPtr] >> 8];
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381 unsigned prevByte = (unsigned)(tPos & 0xFF);
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385 unsigned b = (unsigned)(tPos & 0xFF);
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386 tPos = tt[tPos >> 8];
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392 randToGo = kRandNums[randIndex++];
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393 randIndex &= 0x1FF;
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398 if (numReps == kRleModeRepSize)
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402 crc.UpdateByte(prevByte);
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403 m_OutStream.WriteByte((Byte)prevByte);
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413 m_OutStream.WriteByte((Byte)b);
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415 while(--blockSize != 0);
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416 return crc.GetDigest();
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420 CDecoder::CDecoder()
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424 m_NumThreadsPrev = 0;
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427 _needInStreamInit = true;
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432 CDecoder::~CDecoder()
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437 #define RINOK_THREAD(x) { WRes __result_ = (x); if(__result_ != 0) return __result_; }
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439 HRESULT CDecoder::Create()
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441 RINOK_THREAD(CanProcessEvent.CreateIfNotCreated());
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442 RINOK_THREAD(CanStartWaitingEvent.CreateIfNotCreated());
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443 if (m_States != 0 && m_NumThreadsPrev == NumThreads)
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446 MtMode = (NumThreads > 1);
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447 m_NumThreadsPrev = NumThreads;
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450 m_States = new CState[NumThreads];
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452 return E_OUTOFMEMORY;
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454 catch(...) { return E_OUTOFMEMORY; }
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455 for (UInt32 t = 0; t < NumThreads; t++)
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457 CState &ti = m_States[t];
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461 HRESULT res = ti.Create();
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473 void CDecoder::Free()
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477 CloseThreads = true;
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478 CanProcessEvent.Set();
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479 for (UInt32 t = 0; t < NumThreads; t++)
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481 CState &s = m_States[t];
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492 HRESULT CDecoder::ReadSignatures(bool &wasFinished, UInt32 &crc)
\r
494 wasFinished = false;
\r
496 for (int i = 0; i < 6; i++)
\r
499 if (s[0] == kFinSig0)
\r
501 if (s[1] != kFinSig1 ||
\r
502 s[2] != kFinSig2 ||
\r
503 s[3] != kFinSig3 ||
\r
504 s[4] != kFinSig4 ||
\r
508 wasFinished = true;
\r
509 return (crc == CombinedCrc.GetDigest()) ? S_OK : S_FALSE;
\r
511 if (s[0] != kBlockSig0 ||
\r
512 s[1] != kBlockSig1 ||
\r
513 s[2] != kBlockSig2 ||
\r
514 s[3] != kBlockSig3 ||
\r
515 s[4] != kBlockSig4 ||
\r
516 s[5] != kBlockSig5)
\r
518 CombinedCrc.Update(crc);
\r
522 HRESULT CDecoder::DecodeFile(bool &isBZ, ICompressProgressInfo *progress)
\r
524 Progress = progress;
\r
527 for (UInt32 t = 0; t < NumThreads; t++)
\r
529 CState &s = m_States[t];
\r
531 return E_OUTOFMEMORY;
\r
534 RINOK(s.StreamWasFinishedEvent.Reset());
\r
535 RINOK(s.WaitingWasStartedEvent.Reset());
\r
536 RINOK(s.CanWriteEvent.Reset());
\r
540 if (!m_States[0].Alloc())
\r
541 return E_OUTOFMEMORY;
\r
547 for (i = 0; i < 4; i++)
\r
549 if (s[0] != kArSig0 ||
\r
553 s[3] > kArSig3 + kBlockSizeMultMax)
\r
556 UInt32 dicSize = (UInt32)(s[3] - kArSig3) * kBlockSizeStep;
\r
558 CombinedCrc.Init();
\r
562 NextBlockIndex = 0;
\r
563 StreamWasFinished1 = StreamWasFinished2 = false;
\r
564 CloseThreads = false;
\r
565 CanStartWaitingEvent.Reset();
\r
566 m_States[0].CanWriteEvent.Set();
\r
567 BlockSizeMax = dicSize;
\r
568 Result1 = Result2 = S_OK;
\r
569 CanProcessEvent.Set();
\r
571 for (t = 0; t < NumThreads; t++)
\r
572 m_States[t].StreamWasFinishedEvent.Lock();
\r
573 CanProcessEvent.Reset();
\r
574 CanStartWaitingEvent.Set();
\r
575 for (t = 0; t < NumThreads; t++)
\r
576 m_States[t].WaitingWasStartedEvent.Lock();
\r
577 CanStartWaitingEvent.Reset();
\r
584 CState &state = m_States[0];
\r
587 RINOK(SetRatioProgress(m_InStream.GetProcessedSize()));
\r
590 RINOK(ReadSignatures(wasFinished, crc));
\r
594 UInt32 blockSize, origPtr;
\r
596 RINOK(ReadBlock(&m_InStream, state.Counters, dicSize,
\r
597 m_Selectors, m_HuffmanDecoders,
\r
598 &blockSize, &origPtr, &randMode));
\r
599 DecodeBlock1(state.Counters, blockSize);
\r
601 DecodeBlock2Rand(state.Counters + 256, blockSize, origPtr, m_OutStream) :
\r
602 DecodeBlock2(state.Counters + 256, blockSize, origPtr, m_OutStream)) != crc)
\r
606 return SetRatioProgress(m_InStream.GetProcessedSize());
\r
609 HRESULT CDecoder::CodeReal(ISequentialInStream *inStream, ISequentialOutStream *outStream,
\r
610 bool &isBZ, ICompressProgressInfo *progress)
\r
616 if (!m_InStream.Create(kBufferSize))
\r
617 return E_OUTOFMEMORY;
\r
618 if (!m_OutStream.Create(kBufferSize))
\r
619 return E_OUTOFMEMORY;
\r
622 m_InStream.SetStream(inStream);
\r
624 CDecoderFlusher flusher(this, inStream != NULL);
\r
626 if (_needInStreamInit)
\r
629 _needInStreamInit = false;
\r
631 _inStart = m_InStream.GetProcessedSize();
\r
633 m_InStream.AlignToByte();
\r
635 m_OutStream.SetStream(outStream);
\r
636 m_OutStream.Init();
\r
638 RINOK(DecodeFile(isBZ, progress));
\r
639 flusher.NeedFlush = false;
\r
643 catch(const CInBufferException &e) { return e.ErrorCode; }
\r
644 catch(const COutBufferException &e) { return e.ErrorCode; }
\r
645 catch(...) { return E_FAIL; }
\r
648 STDMETHODIMP CDecoder::Code(ISequentialInStream *inStream, ISequentialOutStream *outStream,
\r
649 const UInt64 * /* inSize */, const UInt64 * /* outSize */, ICompressProgressInfo *progress)
\r
651 _needInStreamInit = true;
\r
653 RINOK(CodeReal(inStream, outStream, isBZ, progress));
\r
654 return isBZ ? S_OK : S_FALSE;
\r
657 HRESULT CDecoder::CodeResume(ISequentialOutStream *outStream, bool &isBZ, ICompressProgressInfo *progress)
\r
659 return CodeReal(NULL, outStream, isBZ, progress);
\r
662 STDMETHODIMP CDecoder::SetInStream(ISequentialInStream *inStream) { m_InStream.SetStream(inStream); return S_OK; }
\r
663 STDMETHODIMP CDecoder::ReleaseInStream() { m_InStream.ReleaseStream(); return S_OK; }
\r
667 static THREAD_FUNC_DECL MFThread(void *p) { ((CState *)p)->ThreadFunc(); return 0; }
\r
669 HRESULT CState::Create()
\r
671 RINOK_THREAD(StreamWasFinishedEvent.CreateIfNotCreated());
\r
672 RINOK_THREAD(WaitingWasStartedEvent.CreateIfNotCreated());
\r
673 RINOK_THREAD(CanWriteEvent.CreateIfNotCreated());
\r
674 RINOK_THREAD(Thread.Create(MFThread, this));
\r
678 void CState::FinishStream()
\r
680 Decoder->StreamWasFinished1 = true;
\r
681 StreamWasFinishedEvent.Set();
\r
682 Decoder->CS.Leave();
\r
683 Decoder->CanStartWaitingEvent.Lock();
\r
684 WaitingWasStartedEvent.Set();
\r
687 void CState::ThreadFunc()
\r
691 Decoder->CanProcessEvent.Lock();
\r
692 Decoder->CS.Enter();
\r
693 if (Decoder->CloseThreads)
\r
695 Decoder->CS.Leave();
\r
698 if (Decoder->StreamWasFinished1)
\r
703 HRESULT res = S_OK;
\r
705 UInt32 blockIndex = Decoder->NextBlockIndex;
\r
706 UInt32 nextBlockIndex = blockIndex + 1;
\r
707 if (nextBlockIndex == Decoder->NumThreads)
\r
708 nextBlockIndex = 0;
\r
709 Decoder->NextBlockIndex = nextBlockIndex;
\r
711 UInt64 packSize = 0;
\r
712 UInt32 blockSize = 0, origPtr = 0;
\r
713 bool randMode = false;
\r
718 res = Decoder->ReadSignatures(wasFinished, crc);
\r
721 Decoder->Result1 = res;
\r
727 Decoder->Result1 = res;
\r
732 res = ReadBlock(&Decoder->m_InStream, Counters, Decoder->BlockSizeMax,
\r
733 Decoder->m_Selectors, Decoder->m_HuffmanDecoders,
\r
734 &blockSize, &origPtr, &randMode);
\r
737 Decoder->Result1 = res;
\r
741 packSize = Decoder->m_InStream.GetProcessedSize();
\r
743 catch(const CInBufferException &e) { res = e.ErrorCode; if (res != S_OK) res = E_FAIL; }
\r
744 catch(...) { res = E_FAIL; }
\r
747 Decoder->Result1 = res;
\r
752 Decoder->CS.Leave();
\r
754 DecodeBlock1(Counters, blockSize);
\r
756 bool needFinish = true;
\r
759 Decoder->m_States[blockIndex].CanWriteEvent.Lock();
\r
760 needFinish = Decoder->StreamWasFinished2;
\r
764 DecodeBlock2Rand(Counters + 256, blockSize, origPtr, Decoder->m_OutStream) :
\r
765 DecodeBlock2(Counters + 256, blockSize, origPtr, Decoder->m_OutStream)) == crc)
\r
766 res = Decoder->SetRatioProgress(packSize);
\r
771 catch(const COutBufferException &e) { res = e.ErrorCode; if (res != S_OK) res = E_FAIL; }
\r
772 catch(...) { res = E_FAIL; }
\r
775 Decoder->Result2 = res;
\r
776 Decoder->StreamWasFinished2 = true;
\r
778 Decoder->m_States[nextBlockIndex].CanWriteEvent.Set();
\r
779 if (res != S_OK || needFinish)
\r
781 StreamWasFinishedEvent.Set();
\r
782 Decoder->CanStartWaitingEvent.Lock();
\r
783 WaitingWasStartedEvent.Set();
\r
788 STDMETHODIMP CDecoder::SetNumberOfThreads(UInt32 numThreads)
\r
790 NumThreads = numThreads;
\r
791 if (NumThreads < 1)
\r
793 if (NumThreads > kNumThreadsMax)
\r
794 NumThreads = kNumThreadsMax;
\r
800 HRESULT CDecoder::SetRatioProgress(UInt64 packSize)
\r
804 packSize -= _inStart;
\r
805 UInt64 unpackSize = m_OutStream.GetProcessedSize();
\r
806 return Progress->SetRatioInfo(&packSize, &unpackSize);
\r
810 // ---------- NSIS ----------
\r
815 NSIS_STATE_NEW_BLOCK,
\r
817 NSIS_STATE_FINISHED,
\r
821 STDMETHODIMP CNsisDecoder::SetInStream(ISequentialInStream *inStream) { m_InStream.SetStream(inStream); return S_OK; }
\r
822 STDMETHODIMP CNsisDecoder::ReleaseInStream() { m_InStream.ReleaseStream(); return S_OK; }
\r
824 STDMETHODIMP CNsisDecoder::SetOutStreamSize(const UInt64 * /* outSize */)
\r
826 _nsisState = NSIS_STATE_INIT;
\r
830 STDMETHODIMP CNsisDecoder::Read(void *data, UInt32 size, UInt32 *processedSize)
\r
834 *processedSize = 0;
\r
835 if (_nsisState == NSIS_STATE_FINISHED)
\r
837 if (_nsisState == NSIS_STATE_ERROR)
\r
842 CState &state = m_State;
\r
844 if (_nsisState == NSIS_STATE_INIT)
\r
846 if (!m_InStream.Create(kBufferSize))
\r
847 return E_OUTOFMEMORY;
\r
848 if (!state.Alloc())
\r
849 return E_OUTOFMEMORY;
\r
851 _nsisState = NSIS_STATE_NEW_BLOCK;
\r
854 if (_nsisState == NSIS_STATE_NEW_BLOCK)
\r
856 Byte b = (Byte)m_InStream.ReadBits(8);
\r
859 _nsisState = NSIS_STATE_FINISHED;
\r
862 if (b != kBlockSig0)
\r
864 _nsisState = NSIS_STATE_ERROR;
\r
868 RINOK(ReadBlock(&m_InStream, state.Counters, 9 * kBlockSizeStep,
\r
869 m_Selectors, m_HuffmanDecoders, &_blockSize, &origPtr, NULL));
\r
870 DecodeBlock1(state.Counters, _blockSize);
\r
871 const UInt32 *tt = state.Counters + 256;
\r
872 _tPos = tt[tt[origPtr] >> 8];
\r
873 _prevByte = (unsigned)(_tPos & 0xFF);
\r
876 _nsisState = NSIS_STATE_DATA;
\r
879 UInt32 tPos = _tPos;
\r
880 unsigned prevByte = _prevByte;
\r
881 unsigned numReps = _numReps;
\r
882 UInt32 blockSize = _blockSize;
\r
883 const UInt32 *tt = state.Counters + 256;
\r
888 *(Byte *)data = (Byte)prevByte;
\r
889 data = (Byte *)data + 1;
\r
890 (*processedSize)++;
\r
895 if (blockSize == 0)
\r
897 _nsisState = NSIS_STATE_NEW_BLOCK;
\r
903 unsigned b = (unsigned)(tPos & 0xFF);
\r
904 tPos = tt[tPos >> 8];
\r
907 if (numReps == kRleModeRepSize)
\r
913 *(Byte *)data = (Byte)prevByte;
\r
914 data = (Byte *)data + 1;
\r
915 (*processedSize)++;
\r
926 *(Byte *)data = (Byte)b;
\r
927 data = (Byte *)data + 1;
\r
928 (*processedSize)++;
\r
931 while (size && blockSize);
\r
933 _prevByte = prevByte;
\r
934 _numReps = numReps;
\r
935 _blockSize = blockSize;
\r
939 catch(const CInBufferException &e) { return e.ErrorCode; }
\r
940 catch(...) { return S_FALSE; }
\r