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| 1 // Copyright 2015 PDFium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
| 6 |
| 7 #include "JBig2_GrdProc.h" |
| 8 |
| 9 #include "../../../../third_party/base/nonstd_unique_ptr.h" |
| 10 #include "JBig2_ArithDecoder.h" |
| 11 #include "JBig2_BitStream.h" |
| 12 #include "JBig2_Image.h" |
| 13 |
| 14 CJBig2_GRDProc::CJBig2_GRDProc() |
| 15 : m_loopIndex(0), |
| 16 m_pLine(nullptr), |
| 17 m_pPause(nullptr), |
| 18 m_DecodeType(0), |
| 19 LTP(0) { |
| 20 m_ReplaceRect.left = 0; |
| 21 m_ReplaceRect.bottom = 0; |
| 22 m_ReplaceRect.top = 0; |
| 23 m_ReplaceRect.right = 0; |
| 24 } |
| 25 |
| 26 bool CJBig2_GRDProc::UseTemplate0Opt3() const { |
| 27 return (GBAT[0] == 3) && (GBAT[1] == -1) && (GBAT[2] == -3) && |
| 28 (GBAT[3] == -1) && (GBAT[4] == 2) && (GBAT[5] == -2) && |
| 29 (GBAT[6] == -2) && (GBAT[7] == -2); |
| 30 } |
| 31 |
| 32 bool CJBig2_GRDProc::UseTemplate1Opt3() const { |
| 33 return (GBAT[0] == 3) && (GBAT[1] == -1); |
| 34 } |
| 35 |
| 36 bool CJBig2_GRDProc::UseTemplate23Opt3() const { |
| 37 return (GBAT[0] == 2) && (GBAT[1] == -1); |
| 38 } |
| 39 |
| 40 CJBig2_Image* CJBig2_GRDProc::decode_Arith(CJBig2_ArithDecoder* pArithDecoder, |
| 41 JBig2ArithCtx* gbContext) { |
| 42 if (GBW == 0 || GBH == 0) |
| 43 return new CJBig2_Image(GBW, GBH); |
| 44 |
| 45 if (GBTEMPLATE == 0) { |
| 46 if (UseTemplate0Opt3()) |
| 47 return decode_Arith_Template0_opt3(pArithDecoder, gbContext); |
| 48 return decode_Arith_Template0_unopt(pArithDecoder, gbContext); |
| 49 } else if (GBTEMPLATE == 1) { |
| 50 if (UseTemplate1Opt3()) |
| 51 return decode_Arith_Template1_opt3(pArithDecoder, gbContext); |
| 52 return decode_Arith_Template1_unopt(pArithDecoder, gbContext); |
| 53 } else if (GBTEMPLATE == 2) { |
| 54 if (UseTemplate23Opt3()) |
| 55 return decode_Arith_Template2_opt3(pArithDecoder, gbContext); |
| 56 return decode_Arith_Template2_unopt(pArithDecoder, gbContext); |
| 57 } else { |
| 58 if (UseTemplate23Opt3()) |
| 59 return decode_Arith_Template3_opt3(pArithDecoder, gbContext); |
| 60 return decode_Arith_Template3_unopt(pArithDecoder, gbContext); |
| 61 } |
| 62 } |
| 63 CJBig2_Image* CJBig2_GRDProc::decode_Arith_Template0_opt3( |
| 64 CJBig2_ArithDecoder* pArithDecoder, |
| 65 JBig2ArithCtx* gbContext) { |
| 66 FX_BOOL LTP, SLTP, bVal; |
| 67 FX_DWORD CONTEXT; |
| 68 FX_DWORD line1, line2; |
| 69 uint8_t* pLine, *pLine1, *pLine2, cVal; |
| 70 int32_t nStride, nStride2, k; |
| 71 int32_t nLineBytes, nBitsLeft, cc; |
| 72 LTP = 0; |
| 73 nonstd::unique_ptr<CJBig2_Image> GBREG(new CJBig2_Image(GBW, GBH)); |
| 74 if (!GBREG->m_pData) |
| 75 return nullptr; |
| 76 |
| 77 pLine = GBREG->m_pData; |
| 78 nStride = GBREG->m_nStride; |
| 79 nStride2 = nStride << 1; |
| 80 nLineBytes = ((GBW + 7) >> 3) - 1; |
| 81 nBitsLeft = GBW - (nLineBytes << 3); |
| 82 FX_DWORD height = GBH & 0x7fffffff; |
| 83 for (FX_DWORD h = 0; h < height; h++) { |
| 84 if (TPGDON) { |
| 85 SLTP = pArithDecoder->DECODE(&gbContext[0x9b25]); |
| 86 LTP = LTP ^ SLTP; |
| 87 } |
| 88 if (LTP == 1) { |
| 89 GBREG->copyLine(h, h - 1); |
| 90 } else { |
| 91 if (h > 1) { |
| 92 pLine1 = pLine - nStride2; |
| 93 pLine2 = pLine - nStride; |
| 94 line1 = (*pLine1++) << 6; |
| 95 line2 = *pLine2++; |
| 96 CONTEXT = ((line1 & 0xf800) | (line2 & 0x07f0)); |
| 97 for (cc = 0; cc < nLineBytes; cc++) { |
| 98 line1 = (line1 << 8) | ((*pLine1++) << 6); |
| 99 line2 = (line2 << 8) | (*pLine2++); |
| 100 cVal = 0; |
| 101 for (k = 7; k >= 0; k--) { |
| 102 bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| 103 cVal |= bVal << k; |
| 104 CONTEXT = (((CONTEXT & 0x7bf7) << 1) | bVal | |
| 105 ((line1 >> k) & 0x0800) | ((line2 >> k) & 0x0010)); |
| 106 } |
| 107 pLine[cc] = cVal; |
| 108 } |
| 109 line1 <<= 8; |
| 110 line2 <<= 8; |
| 111 cVal = 0; |
| 112 for (k = 0; k < nBitsLeft; k++) { |
| 113 bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| 114 cVal |= bVal << (7 - k); |
| 115 CONTEXT = |
| 116 (((CONTEXT & 0x7bf7) << 1) | bVal | |
| 117 ((line1 >> (7 - k)) & 0x0800) | ((line2 >> (7 - k)) & 0x0010)); |
| 118 } |
| 119 pLine[nLineBytes] = cVal; |
| 120 } else { |
| 121 pLine2 = pLine - nStride; |
| 122 line2 = (h & 1) ? (*pLine2++) : 0; |
| 123 CONTEXT = (line2 & 0x07f0); |
| 124 for (cc = 0; cc < nLineBytes; cc++) { |
| 125 if (h & 1) { |
| 126 line2 = (line2 << 8) | (*pLine2++); |
| 127 } |
| 128 cVal = 0; |
| 129 for (k = 7; k >= 0; k--) { |
| 130 bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| 131 cVal |= bVal << k; |
| 132 CONTEXT = |
| 133 (((CONTEXT & 0x7bf7) << 1) | bVal | ((line2 >> k) & 0x0010)); |
| 134 } |
| 135 pLine[cc] = cVal; |
| 136 } |
| 137 line2 <<= 8; |
| 138 cVal = 0; |
| 139 for (k = 0; k < nBitsLeft; k++) { |
| 140 bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| 141 cVal |= bVal << (7 - k); |
| 142 CONTEXT = (((CONTEXT & 0x7bf7) << 1) | bVal | |
| 143 (((line2 >> (7 - k))) & 0x0010)); |
| 144 } |
| 145 pLine[nLineBytes] = cVal; |
| 146 } |
| 147 } |
| 148 pLine += nStride; |
| 149 } |
| 150 return GBREG.release(); |
| 151 } |
| 152 |
| 153 CJBig2_Image* CJBig2_GRDProc::decode_Arith_Template0_unopt( |
| 154 CJBig2_ArithDecoder* pArithDecoder, |
| 155 JBig2ArithCtx* gbContext) { |
| 156 FX_BOOL LTP, SLTP, bVal; |
| 157 FX_DWORD CONTEXT; |
| 158 FX_DWORD line1, line2, line3; |
| 159 LTP = 0; |
| 160 nonstd::unique_ptr<CJBig2_Image> GBREG(new CJBig2_Image(GBW, GBH)); |
| 161 GBREG->fill(0); |
| 162 for (FX_DWORD h = 0; h < GBH; h++) { |
| 163 if (TPGDON) { |
| 164 SLTP = pArithDecoder->DECODE(&gbContext[0x9b25]); |
| 165 LTP = LTP ^ SLTP; |
| 166 } |
| 167 if (LTP == 1) { |
| 168 GBREG->copyLine(h, h - 1); |
| 169 } else { |
| 170 line1 = GBREG->getPixel(1, h - 2); |
| 171 line1 |= GBREG->getPixel(0, h - 2) << 1; |
| 172 line2 = GBREG->getPixel(2, h - 1); |
| 173 line2 |= GBREG->getPixel(1, h - 1) << 1; |
| 174 line2 |= GBREG->getPixel(0, h - 1) << 2; |
| 175 line3 = 0; |
| 176 for (FX_DWORD w = 0; w < GBW; w++) { |
| 177 if (USESKIP && SKIP->getPixel(w, h)) { |
| 178 bVal = 0; |
| 179 } else { |
| 180 CONTEXT = line3; |
| 181 CONTEXT |= GBREG->getPixel(w + GBAT[0], h + GBAT[1]) << 4; |
| 182 CONTEXT |= line2 << 5; |
| 183 CONTEXT |= GBREG->getPixel(w + GBAT[2], h + GBAT[3]) << 10; |
| 184 CONTEXT |= GBREG->getPixel(w + GBAT[4], h + GBAT[5]) << 11; |
| 185 CONTEXT |= line1 << 12; |
| 186 CONTEXT |= GBREG->getPixel(w + GBAT[6], h + GBAT[7]) << 15; |
| 187 bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| 188 } |
| 189 if (bVal) { |
| 190 GBREG->setPixel(w, h, bVal); |
| 191 } |
| 192 line1 = ((line1 << 1) | GBREG->getPixel(w + 2, h - 2)) & 0x07; |
| 193 line2 = ((line2 << 1) | GBREG->getPixel(w + 3, h - 1)) & 0x1f; |
| 194 line3 = ((line3 << 1) | bVal) & 0x0f; |
| 195 } |
| 196 } |
| 197 } |
| 198 return GBREG.release(); |
| 199 } |
| 200 |
| 201 CJBig2_Image* CJBig2_GRDProc::decode_Arith_Template1_opt3( |
| 202 CJBig2_ArithDecoder* pArithDecoder, |
| 203 JBig2ArithCtx* gbContext) { |
| 204 FX_BOOL LTP, SLTP, bVal; |
| 205 FX_DWORD CONTEXT; |
| 206 FX_DWORD line1, line2; |
| 207 uint8_t* pLine, *pLine1, *pLine2, cVal; |
| 208 int32_t nStride, nStride2, k; |
| 209 int32_t nLineBytes, nBitsLeft, cc; |
| 210 LTP = 0; |
| 211 nonstd::unique_ptr<CJBig2_Image> GBREG(new CJBig2_Image(GBW, GBH)); |
| 212 if (!GBREG->m_pData) |
| 213 return nullptr; |
| 214 |
| 215 pLine = GBREG->m_pData; |
| 216 nStride = GBREG->m_nStride; |
| 217 nStride2 = nStride << 1; |
| 218 nLineBytes = ((GBW + 7) >> 3) - 1; |
| 219 nBitsLeft = GBW - (nLineBytes << 3); |
| 220 for (FX_DWORD h = 0; h < GBH; h++) { |
| 221 if (TPGDON) { |
| 222 SLTP = pArithDecoder->DECODE(&gbContext[0x0795]); |
| 223 LTP = LTP ^ SLTP; |
| 224 } |
| 225 if (LTP == 1) { |
| 226 GBREG->copyLine(h, h - 1); |
| 227 } else { |
| 228 if (h > 1) { |
| 229 pLine1 = pLine - nStride2; |
| 230 pLine2 = pLine - nStride; |
| 231 line1 = (*pLine1++) << 4; |
| 232 line2 = *pLine2++; |
| 233 CONTEXT = (line1 & 0x1e00) | ((line2 >> 1) & 0x01f8); |
| 234 for (cc = 0; cc < nLineBytes; cc++) { |
| 235 line1 = (line1 << 8) | ((*pLine1++) << 4); |
| 236 line2 = (line2 << 8) | (*pLine2++); |
| 237 cVal = 0; |
| 238 for (k = 7; k >= 0; k--) { |
| 239 bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| 240 cVal |= bVal << k; |
| 241 CONTEXT = ((CONTEXT & 0x0efb) << 1) | bVal | |
| 242 ((line1 >> k) & 0x0200) | ((line2 >> (k + 1)) & 0x0008); |
| 243 } |
| 244 pLine[cc] = cVal; |
| 245 } |
| 246 line1 <<= 8; |
| 247 line2 <<= 8; |
| 248 cVal = 0; |
| 249 for (k = 0; k < nBitsLeft; k++) { |
| 250 bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| 251 cVal |= bVal << (7 - k); |
| 252 CONTEXT = ((CONTEXT & 0x0efb) << 1) | bVal | |
| 253 ((line1 >> (7 - k)) & 0x0200) | |
| 254 ((line2 >> (8 - k)) & 0x0008); |
| 255 } |
| 256 pLine[nLineBytes] = cVal; |
| 257 } else { |
| 258 pLine2 = pLine - nStride; |
| 259 line2 = (h & 1) ? (*pLine2++) : 0; |
| 260 CONTEXT = (line2 >> 1) & 0x01f8; |
| 261 for (cc = 0; cc < nLineBytes; cc++) { |
| 262 if (h & 1) { |
| 263 line2 = (line2 << 8) | (*pLine2++); |
| 264 } |
| 265 cVal = 0; |
| 266 for (k = 7; k >= 0; k--) { |
| 267 bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| 268 cVal |= bVal << k; |
| 269 CONTEXT = ((CONTEXT & 0x0efb) << 1) | bVal | |
| 270 ((line2 >> (k + 1)) & 0x0008); |
| 271 } |
| 272 pLine[cc] = cVal; |
| 273 } |
| 274 line2 <<= 8; |
| 275 cVal = 0; |
| 276 for (k = 0; k < nBitsLeft; k++) { |
| 277 bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| 278 cVal |= bVal << (7 - k); |
| 279 CONTEXT = |
| 280 ((CONTEXT & 0x0efb) << 1) | bVal | ((line2 >> (8 - k)) & 0x0008); |
| 281 } |
| 282 pLine[nLineBytes] = cVal; |
| 283 } |
| 284 } |
| 285 pLine += nStride; |
| 286 } |
| 287 return GBREG.release(); |
| 288 } |
| 289 |
| 290 CJBig2_Image* CJBig2_GRDProc::decode_Arith_Template1_unopt( |
| 291 CJBig2_ArithDecoder* pArithDecoder, |
| 292 JBig2ArithCtx* gbContext) { |
| 293 FX_BOOL LTP, SLTP, bVal; |
| 294 FX_DWORD CONTEXT; |
| 295 FX_DWORD line1, line2, line3; |
| 296 LTP = 0; |
| 297 nonstd::unique_ptr<CJBig2_Image> GBREG(new CJBig2_Image(GBW, GBH)); |
| 298 GBREG->fill(0); |
| 299 for (FX_DWORD h = 0; h < GBH; h++) { |
| 300 if (TPGDON) { |
| 301 SLTP = pArithDecoder->DECODE(&gbContext[0x0795]); |
| 302 LTP = LTP ^ SLTP; |
| 303 } |
| 304 if (LTP == 1) { |
| 305 GBREG->copyLine(h, h - 1); |
| 306 } else { |
| 307 line1 = GBREG->getPixel(2, h - 2); |
| 308 line1 |= GBREG->getPixel(1, h - 2) << 1; |
| 309 line1 |= GBREG->getPixel(0, h - 2) << 2; |
| 310 line2 = GBREG->getPixel(2, h - 1); |
| 311 line2 |= GBREG->getPixel(1, h - 1) << 1; |
| 312 line2 |= GBREG->getPixel(0, h - 1) << 2; |
| 313 line3 = 0; |
| 314 for (FX_DWORD w = 0; w < GBW; w++) { |
| 315 if (USESKIP && SKIP->getPixel(w, h)) { |
| 316 bVal = 0; |
| 317 } else { |
| 318 CONTEXT = line3; |
| 319 CONTEXT |= GBREG->getPixel(w + GBAT[0], h + GBAT[1]) << 3; |
| 320 CONTEXT |= line2 << 4; |
| 321 CONTEXT |= line1 << 9; |
| 322 bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| 323 } |
| 324 if (bVal) { |
| 325 GBREG->setPixel(w, h, bVal); |
| 326 } |
| 327 line1 = ((line1 << 1) | GBREG->getPixel(w + 3, h - 2)) & 0x0f; |
| 328 line2 = ((line2 << 1) | GBREG->getPixel(w + 3, h - 1)) & 0x1f; |
| 329 line3 = ((line3 << 1) | bVal) & 0x07; |
| 330 } |
| 331 } |
| 332 } |
| 333 return GBREG.release(); |
| 334 } |
| 335 CJBig2_Image* CJBig2_GRDProc::decode_Arith_Template2_opt3( |
| 336 CJBig2_ArithDecoder* pArithDecoder, |
| 337 JBig2ArithCtx* gbContext) { |
| 338 FX_BOOL LTP, SLTP, bVal; |
| 339 FX_DWORD CONTEXT; |
| 340 FX_DWORD line1, line2; |
| 341 uint8_t* pLine, *pLine1, *pLine2, cVal; |
| 342 int32_t nStride, nStride2, k; |
| 343 int32_t nLineBytes, nBitsLeft, cc; |
| 344 LTP = 0; |
| 345 nonstd::unique_ptr<CJBig2_Image> GBREG(new CJBig2_Image(GBW, GBH)); |
| 346 if (!GBREG->m_pData) |
| 347 return nullptr; |
| 348 |
| 349 pLine = GBREG->m_pData; |
| 350 nStride = GBREG->m_nStride; |
| 351 nStride2 = nStride << 1; |
| 352 nLineBytes = ((GBW + 7) >> 3) - 1; |
| 353 nBitsLeft = GBW - (nLineBytes << 3); |
| 354 for (FX_DWORD h = 0; h < GBH; h++) { |
| 355 if (TPGDON) { |
| 356 SLTP = pArithDecoder->DECODE(&gbContext[0x00e5]); |
| 357 LTP = LTP ^ SLTP; |
| 358 } |
| 359 if (LTP == 1) { |
| 360 GBREG->copyLine(h, h - 1); |
| 361 } else { |
| 362 if (h > 1) { |
| 363 pLine1 = pLine - nStride2; |
| 364 pLine2 = pLine - nStride; |
| 365 line1 = (*pLine1++) << 1; |
| 366 line2 = *pLine2++; |
| 367 CONTEXT = (line1 & 0x0380) | ((line2 >> 3) & 0x007c); |
| 368 for (cc = 0; cc < nLineBytes; cc++) { |
| 369 line1 = (line1 << 8) | ((*pLine1++) << 1); |
| 370 line2 = (line2 << 8) | (*pLine2++); |
| 371 cVal = 0; |
| 372 for (k = 7; k >= 0; k--) { |
| 373 bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| 374 cVal |= bVal << k; |
| 375 CONTEXT = ((CONTEXT & 0x01bd) << 1) | bVal | |
| 376 ((line1 >> k) & 0x0080) | ((line2 >> (k + 3)) & 0x0004); |
| 377 } |
| 378 pLine[cc] = cVal; |
| 379 } |
| 380 line1 <<= 8; |
| 381 line2 <<= 8; |
| 382 cVal = 0; |
| 383 for (k = 0; k < nBitsLeft; k++) { |
| 384 bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| 385 cVal |= bVal << (7 - k); |
| 386 CONTEXT = ((CONTEXT & 0x01bd) << 1) | bVal | |
| 387 ((line1 >> (7 - k)) & 0x0080) | |
| 388 ((line2 >> (10 - k)) & 0x0004); |
| 389 } |
| 390 pLine[nLineBytes] = cVal; |
| 391 } else { |
| 392 pLine2 = pLine - nStride; |
| 393 line2 = (h & 1) ? (*pLine2++) : 0; |
| 394 CONTEXT = (line2 >> 3) & 0x007c; |
| 395 for (cc = 0; cc < nLineBytes; cc++) { |
| 396 if (h & 1) { |
| 397 line2 = (line2 << 8) | (*pLine2++); |
| 398 } |
| 399 cVal = 0; |
| 400 for (k = 7; k >= 0; k--) { |
| 401 bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| 402 cVal |= bVal << k; |
| 403 CONTEXT = ((CONTEXT & 0x01bd) << 1) | bVal | |
| 404 ((line2 >> (k + 3)) & 0x0004); |
| 405 } |
| 406 pLine[cc] = cVal; |
| 407 } |
| 408 line2 <<= 8; |
| 409 cVal = 0; |
| 410 for (k = 0; k < nBitsLeft; k++) { |
| 411 bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| 412 cVal |= bVal << (7 - k); |
| 413 CONTEXT = ((CONTEXT & 0x01bd) << 1) | bVal | |
| 414 (((line2 >> (10 - k))) & 0x0004); |
| 415 } |
| 416 pLine[nLineBytes] = cVal; |
| 417 } |
| 418 } |
| 419 pLine += nStride; |
| 420 } |
| 421 return GBREG.release(); |
| 422 } |
| 423 |
| 424 CJBig2_Image* CJBig2_GRDProc::decode_Arith_Template2_unopt( |
| 425 CJBig2_ArithDecoder* pArithDecoder, |
| 426 JBig2ArithCtx* gbContext) { |
| 427 FX_BOOL LTP, SLTP, bVal; |
| 428 FX_DWORD CONTEXT; |
| 429 FX_DWORD line1, line2, line3; |
| 430 LTP = 0; |
| 431 nonstd::unique_ptr<CJBig2_Image> GBREG(new CJBig2_Image(GBW, GBH)); |
| 432 GBREG->fill(0); |
| 433 for (FX_DWORD h = 0; h < GBH; h++) { |
| 434 if (TPGDON) { |
| 435 SLTP = pArithDecoder->DECODE(&gbContext[0x00e5]); |
| 436 LTP = LTP ^ SLTP; |
| 437 } |
| 438 if (LTP == 1) { |
| 439 GBREG->copyLine(h, h - 1); |
| 440 } else { |
| 441 line1 = GBREG->getPixel(1, h - 2); |
| 442 line1 |= GBREG->getPixel(0, h - 2) << 1; |
| 443 line2 = GBREG->getPixel(1, h - 1); |
| 444 line2 |= GBREG->getPixel(0, h - 1) << 1; |
| 445 line3 = 0; |
| 446 for (FX_DWORD w = 0; w < GBW; w++) { |
| 447 if (USESKIP && SKIP->getPixel(w, h)) { |
| 448 bVal = 0; |
| 449 } else { |
| 450 CONTEXT = line3; |
| 451 CONTEXT |= GBREG->getPixel(w + GBAT[0], h + GBAT[1]) << 2; |
| 452 CONTEXT |= line2 << 3; |
| 453 CONTEXT |= line1 << 7; |
| 454 bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| 455 } |
| 456 if (bVal) { |
| 457 GBREG->setPixel(w, h, bVal); |
| 458 } |
| 459 line1 = ((line1 << 1) | GBREG->getPixel(w + 2, h - 2)) & 0x07; |
| 460 line2 = ((line2 << 1) | GBREG->getPixel(w + 2, h - 1)) & 0x0f; |
| 461 line3 = ((line3 << 1) | bVal) & 0x03; |
| 462 } |
| 463 } |
| 464 } |
| 465 return GBREG.release(); |
| 466 } |
| 467 |
| 468 CJBig2_Image* CJBig2_GRDProc::decode_Arith_Template3_opt3( |
| 469 CJBig2_ArithDecoder* pArithDecoder, |
| 470 JBig2ArithCtx* gbContext) { |
| 471 FX_BOOL LTP, SLTP, bVal; |
| 472 FX_DWORD CONTEXT; |
| 473 FX_DWORD line1; |
| 474 uint8_t* pLine, *pLine1, cVal; |
| 475 int32_t nStride, k; |
| 476 int32_t nLineBytes, nBitsLeft, cc; |
| 477 LTP = 0; |
| 478 nonstd::unique_ptr<CJBig2_Image> GBREG(new CJBig2_Image(GBW, GBH)); |
| 479 if (!GBREG->m_pData) |
| 480 return nullptr; |
| 481 |
| 482 pLine = GBREG->m_pData; |
| 483 nStride = GBREG->m_nStride; |
| 484 nLineBytes = ((GBW + 7) >> 3) - 1; |
| 485 nBitsLeft = GBW - (nLineBytes << 3); |
| 486 for (FX_DWORD h = 0; h < GBH; h++) { |
| 487 if (TPGDON) { |
| 488 SLTP = pArithDecoder->DECODE(&gbContext[0x0195]); |
| 489 LTP = LTP ^ SLTP; |
| 490 } |
| 491 if (LTP == 1) { |
| 492 GBREG->copyLine(h, h - 1); |
| 493 } else { |
| 494 if (h > 0) { |
| 495 pLine1 = pLine - nStride; |
| 496 line1 = *pLine1++; |
| 497 CONTEXT = (line1 >> 1) & 0x03f0; |
| 498 for (cc = 0; cc < nLineBytes; cc++) { |
| 499 line1 = (line1 << 8) | (*pLine1++); |
| 500 cVal = 0; |
| 501 for (k = 7; k >= 0; k--) { |
| 502 bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| 503 cVal |= bVal << k; |
| 504 CONTEXT = ((CONTEXT & 0x01f7) << 1) | bVal | |
| 505 ((line1 >> (k + 1)) & 0x0010); |
| 506 } |
| 507 pLine[cc] = cVal; |
| 508 } |
| 509 line1 <<= 8; |
| 510 cVal = 0; |
| 511 for (k = 0; k < nBitsLeft; k++) { |
| 512 bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| 513 cVal |= bVal << (7 - k); |
| 514 CONTEXT = |
| 515 ((CONTEXT & 0x01f7) << 1) | bVal | ((line1 >> (8 - k)) & 0x0010); |
| 516 } |
| 517 pLine[nLineBytes] = cVal; |
| 518 } else { |
| 519 CONTEXT = 0; |
| 520 for (cc = 0; cc < nLineBytes; cc++) { |
| 521 cVal = 0; |
| 522 for (k = 7; k >= 0; k--) { |
| 523 bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| 524 cVal |= bVal << k; |
| 525 CONTEXT = ((CONTEXT & 0x01f7) << 1) | bVal; |
| 526 } |
| 527 pLine[cc] = cVal; |
| 528 } |
| 529 cVal = 0; |
| 530 for (k = 0; k < nBitsLeft; k++) { |
| 531 bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| 532 cVal |= bVal << (7 - k); |
| 533 CONTEXT = ((CONTEXT & 0x01f7) << 1) | bVal; |
| 534 } |
| 535 pLine[nLineBytes] = cVal; |
| 536 } |
| 537 } |
| 538 pLine += nStride; |
| 539 } |
| 540 return GBREG.release(); |
| 541 } |
| 542 |
| 543 CJBig2_Image* CJBig2_GRDProc::decode_Arith_Template3_unopt( |
| 544 CJBig2_ArithDecoder* pArithDecoder, |
| 545 JBig2ArithCtx* gbContext) { |
| 546 FX_BOOL LTP, SLTP, bVal; |
| 547 FX_DWORD CONTEXT; |
| 548 FX_DWORD line1, line2; |
| 549 LTP = 0; |
| 550 nonstd::unique_ptr<CJBig2_Image> GBREG(new CJBig2_Image(GBW, GBH)); |
| 551 GBREG->fill(0); |
| 552 for (FX_DWORD h = 0; h < GBH; h++) { |
| 553 if (TPGDON) { |
| 554 SLTP = pArithDecoder->DECODE(&gbContext[0x0195]); |
| 555 LTP = LTP ^ SLTP; |
| 556 } |
| 557 if (LTP == 1) { |
| 558 GBREG->copyLine(h, h - 1); |
| 559 } else { |
| 560 line1 = GBREG->getPixel(1, h - 1); |
| 561 line1 |= GBREG->getPixel(0, h - 1) << 1; |
| 562 line2 = 0; |
| 563 for (FX_DWORD w = 0; w < GBW; w++) { |
| 564 if (USESKIP && SKIP->getPixel(w, h)) { |
| 565 bVal = 0; |
| 566 } else { |
| 567 CONTEXT = line2; |
| 568 CONTEXT |= GBREG->getPixel(w + GBAT[0], h + GBAT[1]) << 4; |
| 569 CONTEXT |= line1 << 5; |
| 570 bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| 571 } |
| 572 if (bVal) { |
| 573 GBREG->setPixel(w, h, bVal); |
| 574 } |
| 575 line1 = ((line1 << 1) | GBREG->getPixel(w + 2, h - 1)) & 0x1f; |
| 576 line2 = ((line2 << 1) | bVal) & 0x0f; |
| 577 } |
| 578 } |
| 579 } |
| 580 return GBREG.release(); |
| 581 } |
| 582 |
| 583 FXCODEC_STATUS CJBig2_GRDProc::Start_decode_Arith( |
| 584 CJBig2_Image** pImage, |
| 585 CJBig2_ArithDecoder* pArithDecoder, |
| 586 JBig2ArithCtx* gbContext, |
| 587 IFX_Pause* pPause) { |
| 588 if (GBW == 0 || GBH == 0) { |
| 589 m_ProssiveStatus = FXCODEC_STATUS_DECODE_FINISH; |
| 590 return FXCODEC_STATUS_DECODE_FINISH; |
| 591 } |
| 592 m_ProssiveStatus = FXCODEC_STATUS_DECODE_READY; |
| 593 m_pPause = pPause; |
| 594 if (!*pImage) |
| 595 *pImage = new CJBig2_Image(GBW, GBH); |
| 596 if (!(*pImage)->m_pData) { |
| 597 delete *pImage; |
| 598 *pImage = nullptr; |
| 599 m_ProssiveStatus = FXCODEC_STATUS_ERROR; |
| 600 return FXCODEC_STATUS_ERROR; |
| 601 } |
| 602 m_DecodeType = 1; |
| 603 m_pImage = pImage; |
| 604 (*m_pImage)->fill(0); |
| 605 m_pArithDecoder = pArithDecoder; |
| 606 m_gbContext = gbContext; |
| 607 LTP = 0; |
| 608 m_pLine = nullptr; |
| 609 m_loopIndex = 0; |
| 610 return decode_Arith(pPause); |
| 611 } |
| 612 |
| 613 FXCODEC_STATUS CJBig2_GRDProc::decode_Arith(IFX_Pause* pPause) { |
| 614 int iline = m_loopIndex; |
| 615 CJBig2_Image* pImage = *m_pImage; |
| 616 if (GBTEMPLATE == 0) { |
| 617 if (UseTemplate0Opt3()) { |
| 618 m_ProssiveStatus = decode_Arith_Template0_opt3(pImage, m_pArithDecoder, |
| 619 m_gbContext, pPause); |
| 620 } else { |
| 621 m_ProssiveStatus = decode_Arith_Template0_unopt(pImage, m_pArithDecoder, |
| 622 m_gbContext, pPause); |
| 623 } |
| 624 } else if (GBTEMPLATE == 1) { |
| 625 if (UseTemplate1Opt3()) { |
| 626 m_ProssiveStatus = decode_Arith_Template1_opt3(pImage, m_pArithDecoder, |
| 627 m_gbContext, pPause); |
| 628 } else { |
| 629 m_ProssiveStatus = decode_Arith_Template1_unopt(pImage, m_pArithDecoder, |
| 630 m_gbContext, pPause); |
| 631 } |
| 632 } else if (GBTEMPLATE == 2) { |
| 633 if (UseTemplate23Opt3()) { |
| 634 m_ProssiveStatus = decode_Arith_Template2_opt3(pImage, m_pArithDecoder, |
| 635 m_gbContext, pPause); |
| 636 } else { |
| 637 m_ProssiveStatus = decode_Arith_Template2_unopt(pImage, m_pArithDecoder, |
| 638 m_gbContext, pPause); |
| 639 } |
| 640 } else { |
| 641 if (UseTemplate23Opt3()) { |
| 642 m_ProssiveStatus = decode_Arith_Template3_opt3(pImage, m_pArithDecoder, |
| 643 m_gbContext, pPause); |
| 644 } else { |
| 645 m_ProssiveStatus = decode_Arith_Template3_unopt(pImage, m_pArithDecoder, |
| 646 m_gbContext, pPause); |
| 647 } |
| 648 } |
| 649 m_ReplaceRect.left = 0; |
| 650 m_ReplaceRect.right = pImage->m_nWidth; |
| 651 m_ReplaceRect.top = iline; |
| 652 m_ReplaceRect.bottom = m_loopIndex; |
| 653 if (m_ProssiveStatus == FXCODEC_STATUS_DECODE_FINISH) { |
| 654 m_loopIndex = 0; |
| 655 } |
| 656 return m_ProssiveStatus; |
| 657 } |
| 658 |
| 659 FXCODEC_STATUS CJBig2_GRDProc::Start_decode_MMR(CJBig2_Image** pImage, |
| 660 CJBig2_BitStream* pStream, |
| 661 IFX_Pause* pPause) { |
| 662 int bitpos, i; |
| 663 *pImage = new CJBig2_Image(GBW, GBH); |
| 664 if (!(*pImage)->m_pData) { |
| 665 delete (*pImage); |
| 666 (*pImage) = nullptr; |
| 667 m_ProssiveStatus = FXCODEC_STATUS_ERROR; |
| 668 return m_ProssiveStatus; |
| 669 } |
| 670 bitpos = (int)pStream->getBitPos(); |
| 671 _FaxG4Decode(pStream->getBuf(), pStream->getLength(), &bitpos, |
| 672 (*pImage)->m_pData, GBW, GBH, (*pImage)->m_nStride); |
| 673 pStream->setBitPos(bitpos); |
| 674 for (i = 0; (FX_DWORD)i < (*pImage)->m_nStride * GBH; i++) { |
| 675 (*pImage)->m_pData[i] = ~(*pImage)->m_pData[i]; |
| 676 } |
| 677 m_ProssiveStatus = FXCODEC_STATUS_DECODE_FINISH; |
| 678 return m_ProssiveStatus; |
| 679 } |
| 680 |
| 681 FXCODEC_STATUS CJBig2_GRDProc::Continue_decode(IFX_Pause* pPause) { |
| 682 if (m_ProssiveStatus != FXCODEC_STATUS_DECODE_TOBECONTINUE) |
| 683 return m_ProssiveStatus; |
| 684 |
| 685 if (m_DecodeType != 1) { |
| 686 m_ProssiveStatus = FXCODEC_STATUS_ERROR; |
| 687 return m_ProssiveStatus; |
| 688 } |
| 689 |
| 690 return decode_Arith(pPause); |
| 691 } |
| 692 |
| 693 FXCODEC_STATUS CJBig2_GRDProc::decode_Arith_Template0_opt3( |
| 694 CJBig2_Image* pImage, |
| 695 CJBig2_ArithDecoder* pArithDecoder, |
| 696 JBig2ArithCtx* gbContext, |
| 697 IFX_Pause* pPause) { |
| 698 FX_BOOL SLTP, bVal; |
| 699 FX_DWORD CONTEXT; |
| 700 FX_DWORD line1, line2; |
| 701 uint8_t* pLine1, *pLine2, cVal; |
| 702 int32_t nStride, nStride2, k; |
| 703 int32_t nLineBytes, nBitsLeft, cc; |
| 704 if (!m_pLine) { |
| 705 m_pLine = pImage->m_pData; |
| 706 } |
| 707 nStride = pImage->m_nStride; |
| 708 nStride2 = nStride << 1; |
| 709 nLineBytes = ((GBW + 7) >> 3) - 1; |
| 710 nBitsLeft = GBW - (nLineBytes << 3); |
| 711 FX_DWORD height = GBH & 0x7fffffff; |
| 712 for (; m_loopIndex < height; m_loopIndex++) { |
| 713 if (TPGDON) { |
| 714 SLTP = pArithDecoder->DECODE(&gbContext[0x9b25]); |
| 715 LTP = LTP ^ SLTP; |
| 716 } |
| 717 if (LTP == 1) { |
| 718 pImage->copyLine(m_loopIndex, m_loopIndex - 1); |
| 719 } else { |
| 720 if (m_loopIndex > 1) { |
| 721 pLine1 = m_pLine - nStride2; |
| 722 pLine2 = m_pLine - nStride; |
| 723 line1 = (*pLine1++) << 6; |
| 724 line2 = *pLine2++; |
| 725 CONTEXT = ((line1 & 0xf800) | (line2 & 0x07f0)); |
| 726 for (cc = 0; cc < nLineBytes; cc++) { |
| 727 line1 = (line1 << 8) | ((*pLine1++) << 6); |
| 728 line2 = (line2 << 8) | (*pLine2++); |
| 729 cVal = 0; |
| 730 for (k = 7; k >= 0; k--) { |
| 731 bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| 732 cVal |= bVal << k; |
| 733 CONTEXT = (((CONTEXT & 0x7bf7) << 1) | bVal | |
| 734 ((line1 >> k) & 0x0800) | ((line2 >> k) & 0x0010)); |
| 735 } |
| 736 m_pLine[cc] = cVal; |
| 737 } |
| 738 line1 <<= 8; |
| 739 line2 <<= 8; |
| 740 cVal = 0; |
| 741 for (k = 0; k < nBitsLeft; k++) { |
| 742 bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| 743 cVal |= bVal << (7 - k); |
| 744 CONTEXT = |
| 745 (((CONTEXT & 0x7bf7) << 1) | bVal | |
| 746 ((line1 >> (7 - k)) & 0x0800) | ((line2 >> (7 - k)) & 0x0010)); |
| 747 } |
| 748 m_pLine[nLineBytes] = cVal; |
| 749 } else { |
| 750 pLine2 = m_pLine - nStride; |
| 751 line2 = (m_loopIndex & 1) ? (*pLine2++) : 0; |
| 752 CONTEXT = (line2 & 0x07f0); |
| 753 for (cc = 0; cc < nLineBytes; cc++) { |
| 754 if (m_loopIndex & 1) { |
| 755 line2 = (line2 << 8) | (*pLine2++); |
| 756 } |
| 757 cVal = 0; |
| 758 for (k = 7; k >= 0; k--) { |
| 759 bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| 760 cVal |= bVal << k; |
| 761 CONTEXT = |
| 762 (((CONTEXT & 0x7bf7) << 1) | bVal | ((line2 >> k) & 0x0010)); |
| 763 } |
| 764 m_pLine[cc] = cVal; |
| 765 } |
| 766 line2 <<= 8; |
| 767 cVal = 0; |
| 768 for (k = 0; k < nBitsLeft; k++) { |
| 769 bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| 770 cVal |= bVal << (7 - k); |
| 771 CONTEXT = (((CONTEXT & 0x7bf7) << 1) | bVal | |
| 772 ((line2 >> (7 - k)) & 0x0010)); |
| 773 } |
| 774 m_pLine[nLineBytes] = cVal; |
| 775 } |
| 776 } |
| 777 m_pLine += nStride; |
| 778 if (pPause && pPause->NeedToPauseNow()) { |
| 779 m_loopIndex++; |
| 780 m_ProssiveStatus = FXCODEC_STATUS_DECODE_TOBECONTINUE; |
| 781 return FXCODEC_STATUS_DECODE_TOBECONTINUE; |
| 782 } |
| 783 } |
| 784 m_ProssiveStatus = FXCODEC_STATUS_DECODE_FINISH; |
| 785 return FXCODEC_STATUS_DECODE_FINISH; |
| 786 } |
| 787 |
| 788 FXCODEC_STATUS CJBig2_GRDProc::decode_Arith_Template0_unopt( |
| 789 CJBig2_Image* pImage, |
| 790 CJBig2_ArithDecoder* pArithDecoder, |
| 791 JBig2ArithCtx* gbContext, |
| 792 IFX_Pause* pPause) { |
| 793 FX_BOOL SLTP, bVal; |
| 794 FX_DWORD CONTEXT; |
| 795 FX_DWORD line1, line2, line3; |
| 796 for (; m_loopIndex < GBH; m_loopIndex++) { |
| 797 if (TPGDON) { |
| 798 SLTP = pArithDecoder->DECODE(&gbContext[0x9b25]); |
| 799 LTP = LTP ^ SLTP; |
| 800 } |
| 801 if (LTP == 1) { |
| 802 pImage->copyLine(m_loopIndex, m_loopIndex - 1); |
| 803 } else { |
| 804 line1 = pImage->getPixel(1, m_loopIndex - 2); |
| 805 line1 |= pImage->getPixel(0, m_loopIndex - 2) << 1; |
| 806 line2 = pImage->getPixel(2, m_loopIndex - 1); |
| 807 line2 |= pImage->getPixel(1, m_loopIndex - 1) << 1; |
| 808 line2 |= pImage->getPixel(0, m_loopIndex - 1) << 2; |
| 809 line3 = 0; |
| 810 for (FX_DWORD w = 0; w < GBW; w++) { |
| 811 if (USESKIP && SKIP->getPixel(w, m_loopIndex)) { |
| 812 bVal = 0; |
| 813 } else { |
| 814 CONTEXT = line3; |
| 815 CONTEXT |= pImage->getPixel(w + GBAT[0], m_loopIndex + GBAT[1]) << 4; |
| 816 CONTEXT |= line2 << 5; |
| 817 CONTEXT |= pImage->getPixel(w + GBAT[2], m_loopIndex + GBAT[3]) << 10; |
| 818 CONTEXT |= pImage->getPixel(w + GBAT[4], m_loopIndex + GBAT[5]) << 11; |
| 819 CONTEXT |= line1 << 12; |
| 820 CONTEXT |= pImage->getPixel(w + GBAT[6], m_loopIndex + GBAT[7]) << 15; |
| 821 bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| 822 } |
| 823 if (bVal) { |
| 824 pImage->setPixel(w, m_loopIndex, bVal); |
| 825 } |
| 826 line1 = |
| 827 ((line1 << 1) | pImage->getPixel(w + 2, m_loopIndex - 2)) & 0x07; |
| 828 line2 = |
| 829 ((line2 << 1) | pImage->getPixel(w + 3, m_loopIndex - 1)) & 0x1f; |
| 830 line3 = ((line3 << 1) | bVal) & 0x0f; |
| 831 } |
| 832 } |
| 833 if (pPause && pPause->NeedToPauseNow()) { |
| 834 m_loopIndex++; |
| 835 m_ProssiveStatus = FXCODEC_STATUS_DECODE_TOBECONTINUE; |
| 836 return FXCODEC_STATUS_DECODE_TOBECONTINUE; |
| 837 } |
| 838 } |
| 839 m_ProssiveStatus = FXCODEC_STATUS_DECODE_FINISH; |
| 840 return FXCODEC_STATUS_DECODE_FINISH; |
| 841 } |
| 842 |
| 843 FXCODEC_STATUS CJBig2_GRDProc::decode_Arith_Template1_opt3( |
| 844 CJBig2_Image* pImage, |
| 845 CJBig2_ArithDecoder* pArithDecoder, |
| 846 JBig2ArithCtx* gbContext, |
| 847 IFX_Pause* pPause) { |
| 848 FX_BOOL SLTP, bVal; |
| 849 FX_DWORD CONTEXT; |
| 850 FX_DWORD line1, line2; |
| 851 uint8_t* pLine1, *pLine2, cVal; |
| 852 int32_t nStride, nStride2, k; |
| 853 int32_t nLineBytes, nBitsLeft, cc; |
| 854 if (!m_pLine) { |
| 855 m_pLine = pImage->m_pData; |
| 856 } |
| 857 nStride = pImage->m_nStride; |
| 858 nStride2 = nStride << 1; |
| 859 nLineBytes = ((GBW + 7) >> 3) - 1; |
| 860 nBitsLeft = GBW - (nLineBytes << 3); |
| 861 for (; m_loopIndex < GBH; m_loopIndex++) { |
| 862 if (TPGDON) { |
| 863 SLTP = pArithDecoder->DECODE(&gbContext[0x0795]); |
| 864 LTP = LTP ^ SLTP; |
| 865 } |
| 866 if (LTP == 1) { |
| 867 pImage->copyLine(m_loopIndex, m_loopIndex - 1); |
| 868 } else { |
| 869 if (m_loopIndex > 1) { |
| 870 pLine1 = m_pLine - nStride2; |
| 871 pLine2 = m_pLine - nStride; |
| 872 line1 = (*pLine1++) << 4; |
| 873 line2 = *pLine2++; |
| 874 CONTEXT = (line1 & 0x1e00) | ((line2 >> 1) & 0x01f8); |
| 875 for (cc = 0; cc < nLineBytes; cc++) { |
| 876 line1 = (line1 << 8) | ((*pLine1++) << 4); |
| 877 line2 = (line2 << 8) | (*pLine2++); |
| 878 cVal = 0; |
| 879 for (k = 7; k >= 0; k--) { |
| 880 bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| 881 cVal |= bVal << k; |
| 882 CONTEXT = ((CONTEXT & 0x0efb) << 1) | bVal | |
| 883 ((line1 >> k) & 0x0200) | ((line2 >> (k + 1)) & 0x0008); |
| 884 } |
| 885 m_pLine[cc] = cVal; |
| 886 } |
| 887 line1 <<= 8; |
| 888 line2 <<= 8; |
| 889 cVal = 0; |
| 890 for (k = 0; k < nBitsLeft; k++) { |
| 891 bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| 892 cVal |= bVal << (7 - k); |
| 893 CONTEXT = ((CONTEXT & 0x0efb) << 1) | bVal | |
| 894 ((line1 >> (7 - k)) & 0x0200) | |
| 895 ((line2 >> (8 - k)) & 0x0008); |
| 896 } |
| 897 m_pLine[nLineBytes] = cVal; |
| 898 } else { |
| 899 pLine2 = m_pLine - nStride; |
| 900 line2 = (m_loopIndex & 1) ? (*pLine2++) : 0; |
| 901 CONTEXT = (line2 >> 1) & 0x01f8; |
| 902 for (cc = 0; cc < nLineBytes; cc++) { |
| 903 if (m_loopIndex & 1) { |
| 904 line2 = (line2 << 8) | (*pLine2++); |
| 905 } |
| 906 cVal = 0; |
| 907 for (k = 7; k >= 0; k--) { |
| 908 bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| 909 cVal |= bVal << k; |
| 910 CONTEXT = ((CONTEXT & 0x0efb) << 1) | bVal | |
| 911 ((line2 >> (k + 1)) & 0x0008); |
| 912 } |
| 913 m_pLine[cc] = cVal; |
| 914 } |
| 915 line2 <<= 8; |
| 916 cVal = 0; |
| 917 for (k = 0; k < nBitsLeft; k++) { |
| 918 bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| 919 cVal |= bVal << (7 - k); |
| 920 CONTEXT = |
| 921 ((CONTEXT & 0x0efb) << 1) | bVal | ((line2 >> (8 - k)) & 0x0008); |
| 922 } |
| 923 m_pLine[nLineBytes] = cVal; |
| 924 } |
| 925 } |
| 926 m_pLine += nStride; |
| 927 if (pPause && pPause->NeedToPauseNow()) { |
| 928 m_loopIndex++; |
| 929 m_ProssiveStatus = FXCODEC_STATUS_DECODE_TOBECONTINUE; |
| 930 return FXCODEC_STATUS_DECODE_TOBECONTINUE; |
| 931 } |
| 932 } |
| 933 m_ProssiveStatus = FXCODEC_STATUS_DECODE_FINISH; |
| 934 return FXCODEC_STATUS_DECODE_FINISH; |
| 935 } |
| 936 |
| 937 FXCODEC_STATUS CJBig2_GRDProc::decode_Arith_Template1_unopt( |
| 938 CJBig2_Image* pImage, |
| 939 CJBig2_ArithDecoder* pArithDecoder, |
| 940 JBig2ArithCtx* gbContext, |
| 941 IFX_Pause* pPause) { |
| 942 FX_BOOL SLTP, bVal; |
| 943 FX_DWORD CONTEXT; |
| 944 FX_DWORD line1, line2, line3; |
| 945 for (FX_DWORD h = 0; h < GBH; h++) { |
| 946 if (TPGDON) { |
| 947 SLTP = pArithDecoder->DECODE(&gbContext[0x0795]); |
| 948 LTP = LTP ^ SLTP; |
| 949 } |
| 950 if (LTP == 1) { |
| 951 pImage->copyLine(h, h - 1); |
| 952 } else { |
| 953 line1 = pImage->getPixel(2, h - 2); |
| 954 line1 |= pImage->getPixel(1, h - 2) << 1; |
| 955 line1 |= pImage->getPixel(0, h - 2) << 2; |
| 956 line2 = pImage->getPixel(2, h - 1); |
| 957 line2 |= pImage->getPixel(1, h - 1) << 1; |
| 958 line2 |= pImage->getPixel(0, h - 1) << 2; |
| 959 line3 = 0; |
| 960 for (FX_DWORD w = 0; w < GBW; w++) { |
| 961 if (USESKIP && SKIP->getPixel(w, h)) { |
| 962 bVal = 0; |
| 963 } else { |
| 964 CONTEXT = line3; |
| 965 CONTEXT |= pImage->getPixel(w + GBAT[0], h + GBAT[1]) << 3; |
| 966 CONTEXT |= line2 << 4; |
| 967 CONTEXT |= line1 << 9; |
| 968 bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| 969 } |
| 970 if (bVal) { |
| 971 pImage->setPixel(w, h, bVal); |
| 972 } |
| 973 line1 = ((line1 << 1) | pImage->getPixel(w + 3, h - 2)) & 0x0f; |
| 974 line2 = ((line2 << 1) | pImage->getPixel(w + 3, h - 1)) & 0x1f; |
| 975 line3 = ((line3 << 1) | bVal) & 0x07; |
| 976 } |
| 977 } |
| 978 if (pPause && pPause->NeedToPauseNow()) { |
| 979 m_loopIndex++; |
| 980 m_ProssiveStatus = FXCODEC_STATUS_DECODE_TOBECONTINUE; |
| 981 return FXCODEC_STATUS_DECODE_TOBECONTINUE; |
| 982 } |
| 983 } |
| 984 m_ProssiveStatus = FXCODEC_STATUS_DECODE_FINISH; |
| 985 return FXCODEC_STATUS_DECODE_FINISH; |
| 986 } |
| 987 |
| 988 FXCODEC_STATUS CJBig2_GRDProc::decode_Arith_Template2_opt3( |
| 989 CJBig2_Image* pImage, |
| 990 CJBig2_ArithDecoder* pArithDecoder, |
| 991 JBig2ArithCtx* gbContext, |
| 992 IFX_Pause* pPause) { |
| 993 FX_BOOL SLTP, bVal; |
| 994 FX_DWORD CONTEXT; |
| 995 FX_DWORD line1, line2; |
| 996 uint8_t* pLine1, *pLine2, cVal; |
| 997 int32_t nStride, nStride2, k; |
| 998 int32_t nLineBytes, nBitsLeft, cc; |
| 999 if (!m_pLine) { |
| 1000 m_pLine = pImage->m_pData; |
| 1001 } |
| 1002 nStride = pImage->m_nStride; |
| 1003 nStride2 = nStride << 1; |
| 1004 nLineBytes = ((GBW + 7) >> 3) - 1; |
| 1005 nBitsLeft = GBW - (nLineBytes << 3); |
| 1006 for (; m_loopIndex < GBH; m_loopIndex++) { |
| 1007 if (TPGDON) { |
| 1008 SLTP = pArithDecoder->DECODE(&gbContext[0x00e5]); |
| 1009 LTP = LTP ^ SLTP; |
| 1010 } |
| 1011 if (LTP == 1) { |
| 1012 pImage->copyLine(m_loopIndex, m_loopIndex - 1); |
| 1013 } else { |
| 1014 if (m_loopIndex > 1) { |
| 1015 pLine1 = m_pLine - nStride2; |
| 1016 pLine2 = m_pLine - nStride; |
| 1017 line1 = (*pLine1++) << 1; |
| 1018 line2 = *pLine2++; |
| 1019 CONTEXT = (line1 & 0x0380) | ((line2 >> 3) & 0x007c); |
| 1020 for (cc = 0; cc < nLineBytes; cc++) { |
| 1021 line1 = (line1 << 8) | ((*pLine1++) << 1); |
| 1022 line2 = (line2 << 8) | (*pLine2++); |
| 1023 cVal = 0; |
| 1024 for (k = 7; k >= 0; k--) { |
| 1025 bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| 1026 cVal |= bVal << k; |
| 1027 CONTEXT = ((CONTEXT & 0x01bd) << 1) | bVal | |
| 1028 ((line1 >> k) & 0x0080) | ((line2 >> (k + 3)) & 0x0004); |
| 1029 } |
| 1030 m_pLine[cc] = cVal; |
| 1031 } |
| 1032 line1 <<= 8; |
| 1033 line2 <<= 8; |
| 1034 cVal = 0; |
| 1035 for (k = 0; k < nBitsLeft; k++) { |
| 1036 bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| 1037 cVal |= bVal << (7 - k); |
| 1038 CONTEXT = ((CONTEXT & 0x01bd) << 1) | bVal | |
| 1039 ((line1 >> (7 - k)) & 0x0080) | |
| 1040 ((line2 >> (10 - k)) & 0x0004); |
| 1041 } |
| 1042 m_pLine[nLineBytes] = cVal; |
| 1043 } else { |
| 1044 pLine2 = m_pLine - nStride; |
| 1045 line2 = (m_loopIndex & 1) ? (*pLine2++) : 0; |
| 1046 CONTEXT = (line2 >> 3) & 0x007c; |
| 1047 for (cc = 0; cc < nLineBytes; cc++) { |
| 1048 if (m_loopIndex & 1) { |
| 1049 line2 = (line2 << 8) | (*pLine2++); |
| 1050 } |
| 1051 cVal = 0; |
| 1052 for (k = 7; k >= 0; k--) { |
| 1053 bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| 1054 cVal |= bVal << k; |
| 1055 CONTEXT = ((CONTEXT & 0x01bd) << 1) | bVal | |
| 1056 ((line2 >> (k + 3)) & 0x0004); |
| 1057 } |
| 1058 m_pLine[cc] = cVal; |
| 1059 } |
| 1060 line2 <<= 8; |
| 1061 cVal = 0; |
| 1062 for (k = 0; k < nBitsLeft; k++) { |
| 1063 bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| 1064 cVal |= bVal << (7 - k); |
| 1065 CONTEXT = ((CONTEXT & 0x01bd) << 1) | bVal | |
| 1066 (((line2 >> (10 - k))) & 0x0004); |
| 1067 } |
| 1068 m_pLine[nLineBytes] = cVal; |
| 1069 } |
| 1070 } |
| 1071 m_pLine += nStride; |
| 1072 if (pPause && m_loopIndex % 50 == 0 && pPause->NeedToPauseNow()) { |
| 1073 m_loopIndex++; |
| 1074 m_ProssiveStatus = FXCODEC_STATUS_DECODE_TOBECONTINUE; |
| 1075 return FXCODEC_STATUS_DECODE_TOBECONTINUE; |
| 1076 } |
| 1077 } |
| 1078 m_ProssiveStatus = FXCODEC_STATUS_DECODE_FINISH; |
| 1079 return FXCODEC_STATUS_DECODE_FINISH; |
| 1080 } |
| 1081 |
| 1082 FXCODEC_STATUS CJBig2_GRDProc::decode_Arith_Template2_unopt( |
| 1083 CJBig2_Image* pImage, |
| 1084 CJBig2_ArithDecoder* pArithDecoder, |
| 1085 JBig2ArithCtx* gbContext, |
| 1086 IFX_Pause* pPause) { |
| 1087 FX_BOOL SLTP, bVal; |
| 1088 FX_DWORD CONTEXT; |
| 1089 FX_DWORD line1, line2, line3; |
| 1090 for (; m_loopIndex < GBH; m_loopIndex++) { |
| 1091 if (TPGDON) { |
| 1092 SLTP = pArithDecoder->DECODE(&gbContext[0x00e5]); |
| 1093 LTP = LTP ^ SLTP; |
| 1094 } |
| 1095 if (LTP == 1) { |
| 1096 pImage->copyLine(m_loopIndex, m_loopIndex - 1); |
| 1097 } else { |
| 1098 line1 = pImage->getPixel(1, m_loopIndex - 2); |
| 1099 line1 |= pImage->getPixel(0, m_loopIndex - 2) << 1; |
| 1100 line2 = pImage->getPixel(1, m_loopIndex - 1); |
| 1101 line2 |= pImage->getPixel(0, m_loopIndex - 1) << 1; |
| 1102 line3 = 0; |
| 1103 for (FX_DWORD w = 0; w < GBW; w++) { |
| 1104 if (USESKIP && SKIP->getPixel(w, m_loopIndex)) { |
| 1105 bVal = 0; |
| 1106 } else { |
| 1107 CONTEXT = line3; |
| 1108 CONTEXT |= pImage->getPixel(w + GBAT[0], m_loopIndex + GBAT[1]) << 2; |
| 1109 CONTEXT |= line2 << 3; |
| 1110 CONTEXT |= line1 << 7; |
| 1111 bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| 1112 } |
| 1113 if (bVal) { |
| 1114 pImage->setPixel(w, m_loopIndex, bVal); |
| 1115 } |
| 1116 line1 = |
| 1117 ((line1 << 1) | pImage->getPixel(w + 2, m_loopIndex - 2)) & 0x07; |
| 1118 line2 = |
| 1119 ((line2 << 1) | pImage->getPixel(w + 2, m_loopIndex - 1)) & 0x0f; |
| 1120 line3 = ((line3 << 1) | bVal) & 0x03; |
| 1121 } |
| 1122 } |
| 1123 if (pPause && pPause->NeedToPauseNow()) { |
| 1124 m_loopIndex++; |
| 1125 m_ProssiveStatus = FXCODEC_STATUS_DECODE_TOBECONTINUE; |
| 1126 return FXCODEC_STATUS_DECODE_TOBECONTINUE; |
| 1127 } |
| 1128 } |
| 1129 m_ProssiveStatus = FXCODEC_STATUS_DECODE_FINISH; |
| 1130 return FXCODEC_STATUS_DECODE_FINISH; |
| 1131 } |
| 1132 |
| 1133 FXCODEC_STATUS CJBig2_GRDProc::decode_Arith_Template3_opt3( |
| 1134 CJBig2_Image* pImage, |
| 1135 CJBig2_ArithDecoder* pArithDecoder, |
| 1136 JBig2ArithCtx* gbContext, |
| 1137 IFX_Pause* pPause) { |
| 1138 FX_BOOL SLTP, bVal; |
| 1139 FX_DWORD CONTEXT; |
| 1140 FX_DWORD line1; |
| 1141 uint8_t* pLine1, cVal; |
| 1142 int32_t nStride, k; |
| 1143 int32_t nLineBytes, nBitsLeft, cc; |
| 1144 if (!m_pLine) { |
| 1145 m_pLine = pImage->m_pData; |
| 1146 } |
| 1147 nStride = pImage->m_nStride; |
| 1148 nLineBytes = ((GBW + 7) >> 3) - 1; |
| 1149 nBitsLeft = GBW - (nLineBytes << 3); |
| 1150 for (; m_loopIndex < GBH; m_loopIndex++) { |
| 1151 if (TPGDON) { |
| 1152 SLTP = pArithDecoder->DECODE(&gbContext[0x0195]); |
| 1153 LTP = LTP ^ SLTP; |
| 1154 } |
| 1155 if (LTP == 1) { |
| 1156 pImage->copyLine(m_loopIndex, m_loopIndex - 1); |
| 1157 } else { |
| 1158 if (m_loopIndex > 0) { |
| 1159 pLine1 = m_pLine - nStride; |
| 1160 line1 = *pLine1++; |
| 1161 CONTEXT = (line1 >> 1) & 0x03f0; |
| 1162 for (cc = 0; cc < nLineBytes; cc++) { |
| 1163 line1 = (line1 << 8) | (*pLine1++); |
| 1164 cVal = 0; |
| 1165 for (k = 7; k >= 0; k--) { |
| 1166 bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| 1167 cVal |= bVal << k; |
| 1168 CONTEXT = ((CONTEXT & 0x01f7) << 1) | bVal | |
| 1169 ((line1 >> (k + 1)) & 0x0010); |
| 1170 } |
| 1171 m_pLine[cc] = cVal; |
| 1172 } |
| 1173 line1 <<= 8; |
| 1174 cVal = 0; |
| 1175 for (k = 0; k < nBitsLeft; k++) { |
| 1176 bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| 1177 cVal |= bVal << (7 - k); |
| 1178 CONTEXT = |
| 1179 ((CONTEXT & 0x01f7) << 1) | bVal | ((line1 >> (8 - k)) & 0x0010); |
| 1180 } |
| 1181 m_pLine[nLineBytes] = cVal; |
| 1182 } else { |
| 1183 CONTEXT = 0; |
| 1184 for (cc = 0; cc < nLineBytes; cc++) { |
| 1185 cVal = 0; |
| 1186 for (k = 7; k >= 0; k--) { |
| 1187 bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| 1188 cVal |= bVal << k; |
| 1189 CONTEXT = ((CONTEXT & 0x01f7) << 1) | bVal; |
| 1190 } |
| 1191 m_pLine[cc] = cVal; |
| 1192 } |
| 1193 cVal = 0; |
| 1194 for (k = 0; k < nBitsLeft; k++) { |
| 1195 bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| 1196 cVal |= bVal << (7 - k); |
| 1197 CONTEXT = ((CONTEXT & 0x01f7) << 1) | bVal; |
| 1198 } |
| 1199 m_pLine[nLineBytes] = cVal; |
| 1200 } |
| 1201 } |
| 1202 m_pLine += nStride; |
| 1203 if (pPause && pPause->NeedToPauseNow()) { |
| 1204 m_loopIndex++; |
| 1205 m_ProssiveStatus = FXCODEC_STATUS_DECODE_TOBECONTINUE; |
| 1206 return FXCODEC_STATUS_DECODE_TOBECONTINUE; |
| 1207 } |
| 1208 } |
| 1209 m_ProssiveStatus = FXCODEC_STATUS_DECODE_FINISH; |
| 1210 return FXCODEC_STATUS_DECODE_FINISH; |
| 1211 } |
| 1212 |
| 1213 FXCODEC_STATUS CJBig2_GRDProc::decode_Arith_Template3_unopt( |
| 1214 CJBig2_Image* pImage, |
| 1215 CJBig2_ArithDecoder* pArithDecoder, |
| 1216 JBig2ArithCtx* gbContext, |
| 1217 IFX_Pause* pPause) { |
| 1218 FX_BOOL SLTP, bVal; |
| 1219 FX_DWORD CONTEXT; |
| 1220 FX_DWORD line1, line2; |
| 1221 for (; m_loopIndex < GBH; m_loopIndex++) { |
| 1222 if (TPGDON) { |
| 1223 SLTP = pArithDecoder->DECODE(&gbContext[0x0195]); |
| 1224 LTP = LTP ^ SLTP; |
| 1225 } |
| 1226 if (LTP == 1) { |
| 1227 pImage->copyLine(m_loopIndex, m_loopIndex - 1); |
| 1228 } else { |
| 1229 line1 = pImage->getPixel(1, m_loopIndex - 1); |
| 1230 line1 |= pImage->getPixel(0, m_loopIndex - 1) << 1; |
| 1231 line2 = 0; |
| 1232 for (FX_DWORD w = 0; w < GBW; w++) { |
| 1233 if (USESKIP && SKIP->getPixel(w, m_loopIndex)) { |
| 1234 bVal = 0; |
| 1235 } else { |
| 1236 CONTEXT = line2; |
| 1237 CONTEXT |= pImage->getPixel(w + GBAT[0], m_loopIndex + GBAT[1]) << 4; |
| 1238 CONTEXT |= line1 << 5; |
| 1239 bVal = pArithDecoder->DECODE(&gbContext[CONTEXT]); |
| 1240 } |
| 1241 if (bVal) { |
| 1242 pImage->setPixel(w, m_loopIndex, bVal); |
| 1243 } |
| 1244 line1 = |
| 1245 ((line1 << 1) | pImage->getPixel(w + 2, m_loopIndex - 1)) & 0x1f; |
| 1246 line2 = ((line2 << 1) | bVal) & 0x0f; |
| 1247 } |
| 1248 } |
| 1249 if (pPause && pPause->NeedToPauseNow()) { |
| 1250 m_loopIndex++; |
| 1251 m_ProssiveStatus = FXCODEC_STATUS_DECODE_TOBECONTINUE; |
| 1252 return FXCODEC_STATUS_DECODE_TOBECONTINUE; |
| 1253 } |
| 1254 } |
| 1255 m_ProssiveStatus = FXCODEC_STATUS_DECODE_FINISH; |
| 1256 return FXCODEC_STATUS_DECODE_FINISH; |
| 1257 } |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 1359233002:
Split up JBig2_GeneralDecoder.cpp. (Closed)
Base URL: https://pdfium.googlesource.com/pdfium.git@master