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| 1 // Copyright 2014 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 "core/fpdfapi/fpdf_render/render_int.h" | |
| 8 | |
| 9 #include <algorithm> | |
| 10 #include <memory> | |
| 11 #include <vector> | |
| 12 | |
| 13 #include "core/fpdfapi/cpdf_modulemgr.h" | |
| 14 #include "core/fpdfapi/fpdf_render/cpdf_pagerendercache.h" | |
| 15 #include "core/fpdfapi/page/cpdf_image.h" | |
| 16 #include "core/fpdfapi/page/cpdf_imageobject.h" | |
| 17 #include "core/fpdfapi/page/pageint.h" | |
| 18 #include "core/fpdfapi/parser/cpdf_array.h" | |
| 19 #include "core/fpdfapi/parser/cpdf_dictionary.h" | |
| 20 #include "core/fpdfapi/parser/cpdf_document.h" | |
| 21 #include "core/fxcodec/fx_codec.h" | |
| 22 #include "core/fxcrt/fx_safe_types.h" | |
| 23 | |
| 24 namespace { | |
| 25 | |
| 26 unsigned int GetBits8(const uint8_t* pData, uint64_t bitpos, size_t nbits) { | |
| 27 ASSERT(nbits == 1 || nbits == 2 || nbits == 4 || nbits == 8 || nbits == 16); | |
| 28 ASSERT((bitpos & (nbits - 1)) == 0); | |
| 29 unsigned int byte = pData[bitpos / 8]; | |
| 30 if (nbits == 8) | |
| 31 return byte; | |
| 32 | |
| 33 if (nbits == 16) | |
| 34 return byte * 256 + pData[bitpos / 8 + 1]; | |
| 35 | |
| 36 return (byte >> (8 - nbits - (bitpos % 8))) & ((1 << nbits) - 1); | |
| 37 } | |
| 38 | |
| 39 FX_SAFE_UINT32 CalculatePitch8(uint32_t bpc, uint32_t components, int width) { | |
| 40 FX_SAFE_UINT32 pitch = bpc; | |
| 41 pitch *= components; | |
| 42 pitch *= width; | |
| 43 pitch += 7; | |
| 44 pitch /= 8; | |
| 45 return pitch; | |
| 46 } | |
| 47 | |
| 48 FX_SAFE_UINT32 CalculatePitch32(int bpp, int width) { | |
| 49 FX_SAFE_UINT32 pitch = bpp; | |
| 50 pitch *= width; | |
| 51 pitch += 31; | |
| 52 pitch /= 32; // quantized to number of 32-bit words. | |
| 53 pitch *= 4; // and then back to bytes, (not just /8 in one step). | |
| 54 return pitch; | |
| 55 } | |
| 56 | |
| 57 bool IsAllowedBPCValue(int bpc) { | |
| 58 return bpc == 1 || bpc == 2 || bpc == 4 || bpc == 8 || bpc == 16; | |
| 59 } | |
| 60 | |
| 61 template <typename T> | |
| 62 T ClampValue(T value, T max_value) { | |
| 63 value = std::min(value, max_value); | |
| 64 value = std::max<T>(0, value); | |
| 65 return value; | |
| 66 } | |
| 67 | |
| 68 // Wrapper class to use with std::unique_ptr for CJPX_Decoder. | |
| 69 class JpxBitMapContext { | |
| 70 public: | |
| 71 explicit JpxBitMapContext(CCodec_JpxModule* jpx_module) | |
| 72 : jpx_module_(jpx_module), decoder_(nullptr) {} | |
| 73 | |
| 74 ~JpxBitMapContext() { jpx_module_->DestroyDecoder(decoder_); } | |
| 75 | |
| 76 // Takes ownership of |decoder|. | |
| 77 void set_decoder(CJPX_Decoder* decoder) { decoder_ = decoder; } | |
| 78 | |
| 79 CJPX_Decoder* decoder() { return decoder_; } | |
| 80 | |
| 81 private: | |
| 82 CCodec_JpxModule* const jpx_module_; // Weak pointer. | |
| 83 CJPX_Decoder* decoder_; // Decoder, owned. | |
| 84 | |
| 85 // Disallow evil constructors | |
| 86 JpxBitMapContext(const JpxBitMapContext&); | |
| 87 void operator=(const JpxBitMapContext&); | |
| 88 }; | |
| 89 | |
| 90 const int kMaxImageDimension = 0x01FFFF; | |
| 91 | |
| 92 } // namespace | |
| 93 | |
| 94 CPDF_DIBSource::CPDF_DIBSource() | |
| 95 : m_pDocument(nullptr), | |
| 96 m_pStream(nullptr), | |
| 97 m_pDict(nullptr), | |
| 98 m_pColorSpace(nullptr), | |
| 99 m_Family(0), | |
| 100 m_bpc(0), | |
| 101 m_bpc_orig(0), | |
| 102 m_nComponents(0), | |
| 103 m_GroupFamily(0), | |
| 104 m_MatteColor(0), | |
| 105 m_bLoadMask(FALSE), | |
| 106 m_bDefaultDecode(TRUE), | |
| 107 m_bImageMask(FALSE), | |
| 108 m_bDoBpcCheck(TRUE), | |
| 109 m_bColorKey(FALSE), | |
| 110 m_bHasMask(FALSE), | |
| 111 m_bStdCS(FALSE), | |
| 112 m_pCompData(nullptr), | |
| 113 m_pLineBuf(nullptr), | |
| 114 m_pMaskedLine(nullptr), | |
| 115 m_pMask(nullptr), | |
| 116 m_pMaskStream(nullptr), | |
| 117 m_Status(0) {} | |
| 118 | |
| 119 CPDF_DIBSource::~CPDF_DIBSource() { | |
| 120 FX_Free(m_pMaskedLine); | |
| 121 FX_Free(m_pLineBuf); | |
| 122 m_pCachedBitmap.reset(); | |
| 123 FX_Free(m_pCompData); | |
| 124 CPDF_ColorSpace* pCS = m_pColorSpace; | |
| 125 if (pCS && m_pDocument) { | |
| 126 m_pDocument->GetPageData()->ReleaseColorSpace(pCS->GetArray()); | |
| 127 } | |
| 128 } | |
| 129 | |
| 130 CFX_DIBitmap* CPDF_DIBSource::GetBitmap() const { | |
| 131 return m_pCachedBitmap ? m_pCachedBitmap.get() : Clone(); | |
| 132 } | |
| 133 | |
| 134 void CPDF_DIBSource::ReleaseBitmap(CFX_DIBitmap* pBitmap) const { | |
| 135 if (pBitmap && pBitmap != m_pCachedBitmap.get()) { | |
| 136 delete pBitmap; | |
| 137 } | |
| 138 } | |
| 139 | |
| 140 FX_BOOL CPDF_DIBSource::Load(CPDF_Document* pDoc, | |
| 141 const CPDF_Stream* pStream, | |
| 142 CPDF_DIBSource** ppMask, | |
| 143 uint32_t* pMatteColor, | |
| 144 CPDF_Dictionary* pFormResources, | |
| 145 CPDF_Dictionary* pPageResources, | |
| 146 FX_BOOL bStdCS, | |
| 147 uint32_t GroupFamily, | |
| 148 FX_BOOL bLoadMask) { | |
| 149 if (!pStream) { | |
| 150 return FALSE; | |
| 151 } | |
| 152 m_pDocument = pDoc; | |
| 153 m_pDict = pStream->GetDict(); | |
| 154 if (!m_pDict) { | |
| 155 return FALSE; | |
| 156 } | |
| 157 m_pStream = pStream; | |
| 158 m_Width = m_pDict->GetIntegerFor("Width"); | |
| 159 m_Height = m_pDict->GetIntegerFor("Height"); | |
| 160 if (m_Width <= 0 || m_Height <= 0 || m_Width > kMaxImageDimension || | |
| 161 m_Height > kMaxImageDimension) { | |
| 162 return FALSE; | |
| 163 } | |
| 164 m_GroupFamily = GroupFamily; | |
| 165 m_bLoadMask = bLoadMask; | |
| 166 if (!LoadColorInfo(m_pStream->GetObjNum() != 0 ? nullptr : pFormResources, | |
| 167 pPageResources)) { | |
| 168 return FALSE; | |
| 169 } | |
| 170 if (m_bDoBpcCheck && (m_bpc == 0 || m_nComponents == 0)) { | |
| 171 return FALSE; | |
| 172 } | |
| 173 FX_SAFE_UINT32 src_size = | |
| 174 CalculatePitch8(m_bpc, m_nComponents, m_Width) * m_Height; | |
| 175 if (!src_size.IsValid()) { | |
| 176 return FALSE; | |
| 177 } | |
| 178 m_pStreamAcc.reset(new CPDF_StreamAcc); | |
| 179 m_pStreamAcc->LoadAllData(pStream, FALSE, src_size.ValueOrDie(), TRUE); | |
| 180 if (m_pStreamAcc->GetSize() == 0 || !m_pStreamAcc->GetData()) { | |
| 181 return FALSE; | |
| 182 } | |
| 183 if (!CreateDecoder()) { | |
| 184 return FALSE; | |
| 185 } | |
| 186 if (m_bImageMask) { | |
| 187 m_bpp = 1; | |
| 188 m_bpc = 1; | |
| 189 m_nComponents = 1; | |
| 190 m_AlphaFlag = 1; | |
| 191 } else if (m_bpc * m_nComponents == 1) { | |
| 192 m_bpp = 1; | |
| 193 } else if (m_bpc * m_nComponents <= 8) { | |
| 194 m_bpp = 8; | |
| 195 } else { | |
| 196 m_bpp = 24; | |
| 197 } | |
| 198 FX_SAFE_UINT32 pitch = CalculatePitch32(m_bpp, m_Width); | |
| 199 if (!pitch.IsValid()) { | |
| 200 return FALSE; | |
| 201 } | |
| 202 m_pLineBuf = FX_Alloc(uint8_t, pitch.ValueOrDie()); | |
| 203 if (m_pColorSpace && bStdCS) { | |
| 204 m_pColorSpace->EnableStdConversion(TRUE); | |
| 205 } | |
| 206 LoadPalette(); | |
| 207 if (m_bColorKey) { | |
| 208 m_bpp = 32; | |
| 209 m_AlphaFlag = 2; | |
| 210 pitch = CalculatePitch32(m_bpp, m_Width); | |
| 211 if (!pitch.IsValid()) { | |
| 212 return FALSE; | |
| 213 } | |
| 214 m_pMaskedLine = FX_Alloc(uint8_t, pitch.ValueOrDie()); | |
| 215 } | |
| 216 m_Pitch = pitch.ValueOrDie(); | |
| 217 if (ppMask) { | |
| 218 *ppMask = LoadMask(*pMatteColor); | |
| 219 } | |
| 220 if (m_pColorSpace && bStdCS) { | |
| 221 m_pColorSpace->EnableStdConversion(FALSE); | |
| 222 } | |
| 223 return TRUE; | |
| 224 } | |
| 225 | |
| 226 int CPDF_DIBSource::ContinueToLoadMask() { | |
| 227 if (m_bImageMask) { | |
| 228 m_bpp = 1; | |
| 229 m_bpc = 1; | |
| 230 m_nComponents = 1; | |
| 231 m_AlphaFlag = 1; | |
| 232 } else if (m_bpc * m_nComponents == 1) { | |
| 233 m_bpp = 1; | |
| 234 } else if (m_bpc * m_nComponents <= 8) { | |
| 235 m_bpp = 8; | |
| 236 } else { | |
| 237 m_bpp = 24; | |
| 238 } | |
| 239 if (!m_bpc || !m_nComponents) { | |
| 240 return 0; | |
| 241 } | |
| 242 FX_SAFE_UINT32 pitch = CalculatePitch32(m_bpp, m_Width); | |
| 243 if (!pitch.IsValid()) { | |
| 244 return 0; | |
| 245 } | |
| 246 m_pLineBuf = FX_Alloc(uint8_t, pitch.ValueOrDie()); | |
| 247 if (m_pColorSpace && m_bStdCS) { | |
| 248 m_pColorSpace->EnableStdConversion(TRUE); | |
| 249 } | |
| 250 LoadPalette(); | |
| 251 if (m_bColorKey) { | |
| 252 m_bpp = 32; | |
| 253 m_AlphaFlag = 2; | |
| 254 pitch = CalculatePitch32(m_bpp, m_Width); | |
| 255 if (!pitch.IsValid()) { | |
| 256 return 0; | |
| 257 } | |
| 258 m_pMaskedLine = FX_Alloc(uint8_t, pitch.ValueOrDie()); | |
| 259 } | |
| 260 m_Pitch = pitch.ValueOrDie(); | |
| 261 return 1; | |
| 262 } | |
| 263 | |
| 264 int CPDF_DIBSource::StartLoadDIBSource(CPDF_Document* pDoc, | |
| 265 const CPDF_Stream* pStream, | |
| 266 FX_BOOL bHasMask, | |
| 267 CPDF_Dictionary* pFormResources, | |
| 268 CPDF_Dictionary* pPageResources, | |
| 269 FX_BOOL bStdCS, | |
| 270 uint32_t GroupFamily, | |
| 271 FX_BOOL bLoadMask) { | |
| 272 if (!pStream) { | |
| 273 return 0; | |
| 274 } | |
| 275 m_pDocument = pDoc; | |
| 276 m_pDict = pStream->GetDict(); | |
| 277 m_pStream = pStream; | |
| 278 m_bStdCS = bStdCS; | |
| 279 m_bHasMask = bHasMask; | |
| 280 m_Width = m_pDict->GetIntegerFor("Width"); | |
| 281 m_Height = m_pDict->GetIntegerFor("Height"); | |
| 282 if (m_Width <= 0 || m_Height <= 0 || m_Width > kMaxImageDimension || | |
| 283 m_Height > kMaxImageDimension) { | |
| 284 return 0; | |
| 285 } | |
| 286 m_GroupFamily = GroupFamily; | |
| 287 m_bLoadMask = bLoadMask; | |
| 288 if (!LoadColorInfo(m_pStream->GetObjNum() != 0 ? nullptr : pFormResources, | |
| 289 pPageResources)) { | |
| 290 return 0; | |
| 291 } | |
| 292 if (m_bDoBpcCheck && (m_bpc == 0 || m_nComponents == 0)) { | |
| 293 return 0; | |
| 294 } | |
| 295 FX_SAFE_UINT32 src_size = | |
| 296 CalculatePitch8(m_bpc, m_nComponents, m_Width) * m_Height; | |
| 297 if (!src_size.IsValid()) { | |
| 298 return 0; | |
| 299 } | |
| 300 m_pStreamAcc.reset(new CPDF_StreamAcc); | |
| 301 m_pStreamAcc->LoadAllData(pStream, FALSE, src_size.ValueOrDie(), TRUE); | |
| 302 if (m_pStreamAcc->GetSize() == 0 || !m_pStreamAcc->GetData()) { | |
| 303 return 0; | |
| 304 } | |
| 305 int ret = CreateDecoder(); | |
| 306 if (!ret) | |
| 307 return ret; | |
| 308 | |
| 309 if (ret != 1) { | |
| 310 if (!ContinueToLoadMask()) { | |
| 311 return 0; | |
| 312 } | |
| 313 if (m_bHasMask) { | |
| 314 StratLoadMask(); | |
| 315 } | |
| 316 return ret; | |
| 317 } | |
| 318 if (!ContinueToLoadMask()) { | |
| 319 return 0; | |
| 320 } | |
| 321 if (m_bHasMask) { | |
| 322 ret = StratLoadMask(); | |
| 323 } | |
| 324 if (ret == 2) { | |
| 325 return ret; | |
| 326 } | |
| 327 if (m_pColorSpace && m_bStdCS) { | |
| 328 m_pColorSpace->EnableStdConversion(FALSE); | |
| 329 } | |
| 330 return ret; | |
| 331 } | |
| 332 | |
| 333 int CPDF_DIBSource::ContinueLoadDIBSource(IFX_Pause* pPause) { | |
| 334 FXCODEC_STATUS ret; | |
| 335 if (m_Status == 1) { | |
| 336 const CFX_ByteString& decoder = m_pStreamAcc->GetImageDecoder(); | |
| 337 if (decoder == "JPXDecode") { | |
| 338 return 0; | |
| 339 } | |
| 340 CCodec_Jbig2Module* pJbig2Module = CPDF_ModuleMgr::Get()->GetJbig2Module(); | |
| 341 if (!m_pJbig2Context) { | |
| 342 m_pJbig2Context.reset(new CCodec_Jbig2Context()); | |
| 343 if (m_pStreamAcc->GetImageParam()) { | |
| 344 CPDF_Stream* pGlobals = | |
| 345 m_pStreamAcc->GetImageParam()->GetStreamFor("JBIG2Globals"); | |
| 346 if (pGlobals) { | |
| 347 m_pGlobalStream.reset(new CPDF_StreamAcc); | |
| 348 m_pGlobalStream->LoadAllData(pGlobals, FALSE); | |
| 349 } | |
| 350 } | |
| 351 ret = pJbig2Module->StartDecode( | |
| 352 m_pJbig2Context.get(), m_pDocument->CodecContext(), m_Width, m_Height, | |
| 353 m_pStreamAcc.get(), m_pGlobalStream.get(), | |
| 354 m_pCachedBitmap->GetBuffer(), m_pCachedBitmap->GetPitch(), pPause); | |
| 355 if (ret < 0) { | |
| 356 m_pCachedBitmap.reset(); | |
| 357 m_pGlobalStream.reset(); | |
| 358 m_pJbig2Context.reset(); | |
| 359 return 0; | |
| 360 } | |
| 361 if (ret == FXCODEC_STATUS_DECODE_TOBECONTINUE) { | |
| 362 return 2; | |
| 363 } | |
| 364 int ret1 = 1; | |
| 365 if (m_bHasMask) { | |
| 366 ret1 = ContinueLoadMaskDIB(pPause); | |
| 367 m_Status = 2; | |
| 368 } | |
| 369 if (ret1 == 2) { | |
| 370 return ret1; | |
| 371 } | |
| 372 if (m_pColorSpace && m_bStdCS) { | |
| 373 m_pColorSpace->EnableStdConversion(FALSE); | |
| 374 } | |
| 375 return ret1; | |
| 376 } | |
| 377 ret = pJbig2Module->ContinueDecode(m_pJbig2Context.get(), pPause); | |
| 378 if (ret < 0) { | |
| 379 m_pCachedBitmap.reset(); | |
| 380 m_pGlobalStream.reset(); | |
| 381 m_pJbig2Context.reset(); | |
| 382 return 0; | |
| 383 } | |
| 384 if (ret == FXCODEC_STATUS_DECODE_TOBECONTINUE) { | |
| 385 return 2; | |
| 386 } | |
| 387 int ret1 = 1; | |
| 388 if (m_bHasMask) { | |
| 389 ret1 = ContinueLoadMaskDIB(pPause); | |
| 390 m_Status = 2; | |
| 391 } | |
| 392 if (ret1 == 2) { | |
| 393 return ret1; | |
| 394 } | |
| 395 if (m_pColorSpace && m_bStdCS) { | |
| 396 m_pColorSpace->EnableStdConversion(FALSE); | |
| 397 } | |
| 398 return ret1; | |
| 399 } | |
| 400 if (m_Status == 2) { | |
| 401 return ContinueLoadMaskDIB(pPause); | |
| 402 } | |
| 403 return 0; | |
| 404 } | |
| 405 | |
| 406 bool CPDF_DIBSource::LoadColorInfo(const CPDF_Dictionary* pFormResources, | |
| 407 const CPDF_Dictionary* pPageResources) { | |
| 408 m_bpc_orig = m_pDict->GetIntegerFor("BitsPerComponent"); | |
| 409 if (m_pDict->GetIntegerFor("ImageMask")) | |
| 410 m_bImageMask = TRUE; | |
| 411 | |
| 412 if (m_bImageMask || !m_pDict->KeyExist("ColorSpace")) { | |
| 413 if (!m_bImageMask) { | |
| 414 CPDF_Object* pFilter = m_pDict->GetDirectObjectFor("Filter"); | |
| 415 if (pFilter) { | |
| 416 CFX_ByteString filter; | |
| 417 if (pFilter->IsName()) { | |
| 418 filter = pFilter->GetString(); | |
| 419 } else if (CPDF_Array* pArray = pFilter->AsArray()) { | |
| 420 filter = pArray->GetStringAt(pArray->GetCount() - 1); | |
| 421 } | |
| 422 | |
| 423 if (filter == "JPXDecode") { | |
| 424 m_bDoBpcCheck = FALSE; | |
| 425 return true; | |
| 426 } | |
| 427 } | |
| 428 } | |
| 429 m_bImageMask = TRUE; | |
| 430 m_bpc = m_nComponents = 1; | |
| 431 CPDF_Array* pDecode = m_pDict->GetArrayFor("Decode"); | |
| 432 m_bDefaultDecode = !pDecode || !pDecode->GetIntegerAt(0); | |
| 433 return true; | |
| 434 } | |
| 435 | |
| 436 CPDF_Object* pCSObj = m_pDict->GetDirectObjectFor("ColorSpace"); | |
| 437 if (!pCSObj) | |
| 438 return false; | |
| 439 | |
| 440 CPDF_DocPageData* pDocPageData = m_pDocument->GetPageData(); | |
| 441 if (pFormResources) | |
| 442 m_pColorSpace = pDocPageData->GetColorSpace(pCSObj, pFormResources); | |
| 443 if (!m_pColorSpace) | |
| 444 m_pColorSpace = pDocPageData->GetColorSpace(pCSObj, pPageResources); | |
| 445 if (!m_pColorSpace) | |
| 446 return false; | |
| 447 | |
| 448 m_Family = m_pColorSpace->GetFamily(); | |
| 449 m_nComponents = m_pColorSpace->CountComponents(); | |
| 450 if (m_Family == PDFCS_ICCBASED && pCSObj->IsName()) { | |
| 451 CFX_ByteString cs = pCSObj->GetString(); | |
| 452 if (cs == "DeviceGray") { | |
| 453 m_nComponents = 1; | |
| 454 } else if (cs == "DeviceRGB") { | |
| 455 m_nComponents = 3; | |
| 456 } else if (cs == "DeviceCMYK") { | |
| 457 m_nComponents = 4; | |
| 458 } | |
| 459 } | |
| 460 ValidateDictParam(); | |
| 461 m_pCompData = GetDecodeAndMaskArray(m_bDefaultDecode, m_bColorKey); | |
| 462 return !!m_pCompData; | |
| 463 } | |
| 464 | |
| 465 DIB_COMP_DATA* CPDF_DIBSource::GetDecodeAndMaskArray(FX_BOOL& bDefaultDecode, | |
| 466 FX_BOOL& bColorKey) { | |
| 467 if (!m_pColorSpace) { | |
| 468 return nullptr; | |
| 469 } | |
| 470 DIB_COMP_DATA* pCompData = FX_Alloc(DIB_COMP_DATA, m_nComponents); | |
| 471 int max_data = (1 << m_bpc) - 1; | |
| 472 CPDF_Array* pDecode = m_pDict->GetArrayFor("Decode"); | |
| 473 if (pDecode) { | |
| 474 for (uint32_t i = 0; i < m_nComponents; i++) { | |
| 475 pCompData[i].m_DecodeMin = pDecode->GetNumberAt(i * 2); | |
| 476 FX_FLOAT max = pDecode->GetNumberAt(i * 2 + 1); | |
| 477 pCompData[i].m_DecodeStep = (max - pCompData[i].m_DecodeMin) / max_data; | |
| 478 FX_FLOAT def_value; | |
| 479 FX_FLOAT def_min; | |
| 480 FX_FLOAT def_max; | |
| 481 m_pColorSpace->GetDefaultValue(i, def_value, def_min, def_max); | |
| 482 if (m_Family == PDFCS_INDEXED) { | |
| 483 def_max = max_data; | |
| 484 } | |
| 485 if (def_min != pCompData[i].m_DecodeMin || def_max != max) { | |
| 486 bDefaultDecode = FALSE; | |
| 487 } | |
| 488 } | |
| 489 } else { | |
| 490 for (uint32_t i = 0; i < m_nComponents; i++) { | |
| 491 FX_FLOAT def_value; | |
| 492 m_pColorSpace->GetDefaultValue(i, def_value, pCompData[i].m_DecodeMin, | |
| 493 pCompData[i].m_DecodeStep); | |
| 494 if (m_Family == PDFCS_INDEXED) { | |
| 495 pCompData[i].m_DecodeStep = max_data; | |
| 496 } | |
| 497 pCompData[i].m_DecodeStep = | |
| 498 (pCompData[i].m_DecodeStep - pCompData[i].m_DecodeMin) / max_data; | |
| 499 } | |
| 500 } | |
| 501 if (!m_pDict->KeyExist("SMask")) { | |
| 502 CPDF_Object* pMask = m_pDict->GetDirectObjectFor("Mask"); | |
| 503 if (!pMask) { | |
| 504 return pCompData; | |
| 505 } | |
| 506 if (CPDF_Array* pArray = pMask->AsArray()) { | |
| 507 if (pArray->GetCount() >= m_nComponents * 2) { | |
| 508 for (uint32_t i = 0; i < m_nComponents; i++) { | |
| 509 int min_num = pArray->GetIntegerAt(i * 2); | |
| 510 int max_num = pArray->GetIntegerAt(i * 2 + 1); | |
| 511 pCompData[i].m_ColorKeyMin = std::max(min_num, 0); | |
| 512 pCompData[i].m_ColorKeyMax = std::min(max_num, max_data); | |
| 513 } | |
| 514 } | |
| 515 bColorKey = TRUE; | |
| 516 } | |
| 517 } | |
| 518 return pCompData; | |
| 519 } | |
| 520 | |
| 521 CCodec_ScanlineDecoder* FPDFAPI_CreateFaxDecoder( | |
| 522 const uint8_t* src_buf, | |
| 523 uint32_t src_size, | |
| 524 int width, | |
| 525 int height, | |
| 526 const CPDF_Dictionary* pParams); | |
| 527 | |
| 528 CCodec_ScanlineDecoder* FPDFAPI_CreateFlateDecoder( | |
| 529 const uint8_t* src_buf, | |
| 530 uint32_t src_size, | |
| 531 int width, | |
| 532 int height, | |
| 533 int nComps, | |
| 534 int bpc, | |
| 535 const CPDF_Dictionary* pParams); | |
| 536 | |
| 537 int CPDF_DIBSource::CreateDecoder() { | |
| 538 const CFX_ByteString& decoder = m_pStreamAcc->GetImageDecoder(); | |
| 539 if (decoder.IsEmpty()) { | |
| 540 return 1; | |
| 541 } | |
| 542 if (m_bDoBpcCheck && m_bpc == 0) { | |
| 543 return 0; | |
| 544 } | |
| 545 const uint8_t* src_data = m_pStreamAcc->GetData(); | |
| 546 uint32_t src_size = m_pStreamAcc->GetSize(); | |
| 547 const CPDF_Dictionary* pParams = m_pStreamAcc->GetImageParam(); | |
| 548 if (decoder == "CCITTFaxDecode") { | |
| 549 m_pDecoder.reset(FPDFAPI_CreateFaxDecoder(src_data, src_size, m_Width, | |
| 550 m_Height, pParams)); | |
| 551 } else if (decoder == "DCTDecode") { | |
| 552 m_pDecoder.reset(CPDF_ModuleMgr::Get()->GetJpegModule()->CreateDecoder( | |
| 553 src_data, src_size, m_Width, m_Height, m_nComponents, | |
| 554 pParams ? pParams->GetIntegerFor("ColorTransform", 1) : 1)); | |
| 555 if (!m_pDecoder) { | |
| 556 bool bTransform = false; | |
| 557 int comps; | |
| 558 int bpc; | |
| 559 CCodec_JpegModule* pJpegModule = CPDF_ModuleMgr::Get()->GetJpegModule(); | |
| 560 if (pJpegModule->LoadInfo(src_data, src_size, &m_Width, &m_Height, &comps, | |
| 561 &bpc, &bTransform)) { | |
| 562 if (m_nComponents != static_cast<uint32_t>(comps)) { | |
| 563 FX_Free(m_pCompData); | |
| 564 m_pCompData = nullptr; | |
| 565 m_nComponents = static_cast<uint32_t>(comps); | |
| 566 if (m_pColorSpace && | |
| 567 m_pColorSpace->CountComponents() != m_nComponents) { | |
| 568 return 0; | |
| 569 } | |
| 570 if (m_Family == PDFCS_LAB && m_nComponents != 3) | |
| 571 return 0; | |
| 572 m_pCompData = GetDecodeAndMaskArray(m_bDefaultDecode, m_bColorKey); | |
| 573 if (!m_pCompData) | |
| 574 return 0; | |
| 575 } | |
| 576 m_bpc = bpc; | |
| 577 m_pDecoder.reset(CPDF_ModuleMgr::Get()->GetJpegModule()->CreateDecoder( | |
| 578 src_data, src_size, m_Width, m_Height, m_nComponents, bTransform)); | |
| 579 } | |
| 580 } | |
| 581 } else if (decoder == "FlateDecode") { | |
| 582 m_pDecoder.reset(FPDFAPI_CreateFlateDecoder( | |
| 583 src_data, src_size, m_Width, m_Height, m_nComponents, m_bpc, pParams)); | |
| 584 } else if (decoder == "JPXDecode") { | |
| 585 LoadJpxBitmap(); | |
| 586 return m_pCachedBitmap ? 1 : 0; | |
| 587 } else if (decoder == "JBIG2Decode") { | |
| 588 m_pCachedBitmap.reset(new CFX_DIBitmap); | |
| 589 if (!m_pCachedBitmap->Create( | |
| 590 m_Width, m_Height, m_bImageMask ? FXDIB_1bppMask : FXDIB_1bppRgb)) { | |
| 591 m_pCachedBitmap.reset(); | |
| 592 return 0; | |
| 593 } | |
| 594 m_Status = 1; | |
| 595 return 2; | |
| 596 } else if (decoder == "RunLengthDecode") { | |
| 597 m_pDecoder.reset(CPDF_ModuleMgr::Get() | |
| 598 ->GetCodecModule() | |
| 599 ->GetBasicModule() | |
| 600 ->CreateRunLengthDecoder(src_data, src_size, m_Width, | |
| 601 m_Height, m_nComponents, | |
| 602 m_bpc)); | |
| 603 } | |
| 604 if (!m_pDecoder) | |
| 605 return 0; | |
| 606 | |
| 607 FX_SAFE_UINT32 requested_pitch = | |
| 608 CalculatePitch8(m_bpc, m_nComponents, m_Width); | |
| 609 if (!requested_pitch.IsValid()) | |
| 610 return 0; | |
| 611 FX_SAFE_UINT32 provided_pitch = CalculatePitch8( | |
| 612 m_pDecoder->GetBPC(), m_pDecoder->CountComps(), m_pDecoder->GetWidth()); | |
| 613 if (!provided_pitch.IsValid()) | |
| 614 return 0; | |
| 615 if (provided_pitch.ValueOrDie() < requested_pitch.ValueOrDie()) | |
| 616 return 0; | |
| 617 return 1; | |
| 618 } | |
| 619 | |
| 620 void CPDF_DIBSource::LoadJpxBitmap() { | |
| 621 CCodec_JpxModule* pJpxModule = CPDF_ModuleMgr::Get()->GetJpxModule(); | |
| 622 if (!pJpxModule) | |
| 623 return; | |
| 624 | |
| 625 std::unique_ptr<JpxBitMapContext> context(new JpxBitMapContext(pJpxModule)); | |
| 626 context->set_decoder(pJpxModule->CreateDecoder( | |
| 627 m_pStreamAcc->GetData(), m_pStreamAcc->GetSize(), m_pColorSpace)); | |
| 628 if (!context->decoder()) | |
| 629 return; | |
| 630 | |
| 631 uint32_t width = 0; | |
| 632 uint32_t height = 0; | |
| 633 uint32_t components = 0; | |
| 634 pJpxModule->GetImageInfo(context->decoder(), &width, &height, &components); | |
| 635 if (static_cast<int>(width) < m_Width || static_cast<int>(height) < m_Height) | |
| 636 return; | |
| 637 | |
| 638 FX_BOOL bSwapRGB = FALSE; | |
| 639 if (m_pColorSpace) { | |
| 640 if (components != m_pColorSpace->CountComponents()) | |
| 641 return; | |
| 642 | |
| 643 if (m_pColorSpace == CPDF_ColorSpace::GetStockCS(PDFCS_DEVICERGB)) { | |
| 644 bSwapRGB = TRUE; | |
| 645 m_pColorSpace = nullptr; | |
| 646 } | |
| 647 } else { | |
| 648 if (components == 3) { | |
| 649 bSwapRGB = TRUE; | |
| 650 } else if (components == 4) { | |
| 651 m_pColorSpace = CPDF_ColorSpace::GetStockCS(PDFCS_DEVICECMYK); | |
| 652 } | |
| 653 m_nComponents = components; | |
| 654 } | |
| 655 | |
| 656 FXDIB_Format format; | |
| 657 if (components == 1) { | |
| 658 format = FXDIB_8bppRgb; | |
| 659 } else if (components <= 3) { | |
| 660 format = FXDIB_Rgb; | |
| 661 } else if (components == 4) { | |
| 662 format = FXDIB_Rgb32; | |
| 663 } else { | |
| 664 width = (width * components + 2) / 3; | |
| 665 format = FXDIB_Rgb; | |
| 666 } | |
| 667 | |
| 668 m_pCachedBitmap.reset(new CFX_DIBitmap); | |
| 669 if (!m_pCachedBitmap->Create(width, height, format)) { | |
| 670 m_pCachedBitmap.reset(); | |
| 671 return; | |
| 672 } | |
| 673 m_pCachedBitmap->Clear(0xFFFFFFFF); | |
| 674 std::vector<uint8_t> output_offsets(components); | |
| 675 for (uint32_t i = 0; i < components; ++i) | |
| 676 output_offsets[i] = i; | |
| 677 if (bSwapRGB) { | |
| 678 output_offsets[0] = 2; | |
| 679 output_offsets[2] = 0; | |
| 680 } | |
| 681 if (!pJpxModule->Decode(context->decoder(), m_pCachedBitmap->GetBuffer(), | |
| 682 m_pCachedBitmap->GetPitch(), output_offsets)) { | |
| 683 m_pCachedBitmap.reset(); | |
| 684 return; | |
| 685 } | |
| 686 if (m_pColorSpace && m_pColorSpace->GetFamily() == PDFCS_INDEXED && | |
| 687 m_bpc < 8) { | |
| 688 int scale = 8 - m_bpc; | |
| 689 for (uint32_t row = 0; row < height; ++row) { | |
| 690 uint8_t* scanline = | |
| 691 const_cast<uint8_t*>(m_pCachedBitmap->GetScanline(row)); | |
| 692 for (uint32_t col = 0; col < width; ++col) { | |
| 693 *scanline = (*scanline) >> scale; | |
| 694 ++scanline; | |
| 695 } | |
| 696 } | |
| 697 } | |
| 698 m_bpc = 8; | |
| 699 } | |
| 700 | |
| 701 CPDF_DIBSource* CPDF_DIBSource::LoadMask(uint32_t& MatteColor) { | |
| 702 MatteColor = 0xFFFFFFFF; | |
| 703 CPDF_Stream* pSoftMask = m_pDict->GetStreamFor("SMask"); | |
| 704 if (pSoftMask) { | |
| 705 CPDF_Array* pMatte = pSoftMask->GetDict()->GetArrayFor("Matte"); | |
| 706 if (pMatte && m_pColorSpace && | |
| 707 m_pColorSpace->CountComponents() <= m_nComponents) { | |
| 708 std::vector<FX_FLOAT> colors(m_nComponents); | |
| 709 for (uint32_t i = 0; i < m_nComponents; i++) { | |
| 710 colors[i] = pMatte->GetFloatAt(i); | |
| 711 } | |
| 712 FX_FLOAT R, G, B; | |
| 713 m_pColorSpace->GetRGB(colors.data(), R, G, B); | |
| 714 MatteColor = FXARGB_MAKE(0, FXSYS_round(R * 255), FXSYS_round(G * 255), | |
| 715 FXSYS_round(B * 255)); | |
| 716 } | |
| 717 return LoadMaskDIB(pSoftMask); | |
| 718 } | |
| 719 | |
| 720 if (CPDF_Stream* pStream = ToStream(m_pDict->GetDirectObjectFor("Mask"))) | |
| 721 return LoadMaskDIB(pStream); | |
| 722 | |
| 723 return nullptr; | |
| 724 } | |
| 725 | |
| 726 int CPDF_DIBSource::StratLoadMask() { | |
| 727 m_MatteColor = 0XFFFFFFFF; | |
| 728 m_pMaskStream = m_pDict->GetStreamFor("SMask"); | |
| 729 if (m_pMaskStream) { | |
| 730 CPDF_Array* pMatte = m_pMaskStream->GetDict()->GetArrayFor("Matte"); | |
| 731 if (pMatte && m_pColorSpace && | |
| 732 m_pColorSpace->CountComponents() <= m_nComponents) { | |
| 733 FX_FLOAT R, G, B; | |
| 734 std::vector<FX_FLOAT> colors(m_nComponents); | |
| 735 for (uint32_t i = 0; i < m_nComponents; i++) { | |
| 736 colors[i] = pMatte->GetFloatAt(i); | |
| 737 } | |
| 738 m_pColorSpace->GetRGB(colors.data(), R, G, B); | |
| 739 m_MatteColor = FXARGB_MAKE(0, FXSYS_round(R * 255), FXSYS_round(G * 255), | |
| 740 FXSYS_round(B * 255)); | |
| 741 } | |
| 742 return StartLoadMaskDIB(); | |
| 743 } | |
| 744 | |
| 745 m_pMaskStream = ToStream(m_pDict->GetDirectObjectFor("Mask")); | |
| 746 return m_pMaskStream ? StartLoadMaskDIB() : 1; | |
| 747 } | |
| 748 | |
| 749 int CPDF_DIBSource::ContinueLoadMaskDIB(IFX_Pause* pPause) { | |
| 750 if (!m_pMask) { | |
| 751 return 1; | |
| 752 } | |
| 753 int ret = m_pMask->ContinueLoadDIBSource(pPause); | |
| 754 if (ret == 2) { | |
| 755 return ret; | |
| 756 } | |
| 757 if (m_pColorSpace && m_bStdCS) { | |
| 758 m_pColorSpace->EnableStdConversion(FALSE); | |
| 759 } | |
| 760 if (!ret) { | |
| 761 delete m_pMask; | |
| 762 m_pMask = nullptr; | |
| 763 return ret; | |
| 764 } | |
| 765 return 1; | |
| 766 } | |
| 767 | |
| 768 CPDF_DIBSource* CPDF_DIBSource::DetachMask() { | |
| 769 CPDF_DIBSource* pDIBSource = m_pMask; | |
| 770 m_pMask = nullptr; | |
| 771 return pDIBSource; | |
| 772 } | |
| 773 | |
| 774 CPDF_DIBSource* CPDF_DIBSource::LoadMaskDIB(CPDF_Stream* pMask) { | |
| 775 CPDF_DIBSource* pMaskSource = new CPDF_DIBSource; | |
| 776 if (!pMaskSource->Load(m_pDocument, pMask, nullptr, nullptr, nullptr, nullptr, | |
| 777 TRUE)) { | |
| 778 delete pMaskSource; | |
| 779 return nullptr; | |
| 780 } | |
| 781 return pMaskSource; | |
| 782 } | |
| 783 | |
| 784 int CPDF_DIBSource::StartLoadMaskDIB() { | |
| 785 m_pMask = new CPDF_DIBSource; | |
| 786 int ret = m_pMask->StartLoadDIBSource(m_pDocument, m_pMaskStream, FALSE, | |
| 787 nullptr, nullptr, TRUE); | |
| 788 if (ret == 2) { | |
| 789 if (m_Status == 0) | |
| 790 m_Status = 2; | |
| 791 return 2; | |
| 792 } | |
| 793 if (!ret) { | |
| 794 delete m_pMask; | |
| 795 m_pMask = nullptr; | |
| 796 return 1; | |
| 797 } | |
| 798 return 1; | |
| 799 } | |
| 800 | |
| 801 void CPDF_DIBSource::LoadPalette() { | |
| 802 if (m_bpc == 0) { | |
| 803 return; | |
| 804 } | |
| 805 if (m_bpc * m_nComponents > 8) { | |
| 806 return; | |
| 807 } | |
| 808 if (!m_pColorSpace) { | |
| 809 return; | |
| 810 } | |
| 811 if (m_bpc * m_nComponents == 1) { | |
| 812 if (m_bDefaultDecode && | |
| 813 (m_Family == PDFCS_DEVICEGRAY || m_Family == PDFCS_DEVICERGB)) { | |
| 814 return; | |
| 815 } | |
| 816 if (m_pColorSpace->CountComponents() > 3) { | |
| 817 return; | |
| 818 } | |
| 819 FX_FLOAT color_values[3]; | |
| 820 color_values[0] = m_pCompData[0].m_DecodeMin; | |
| 821 color_values[1] = color_values[2] = color_values[0]; | |
| 822 FX_FLOAT R = 0.0f, G = 0.0f, B = 0.0f; | |
| 823 m_pColorSpace->GetRGB(color_values, R, G, B); | |
| 824 FX_ARGB argb0 = ArgbEncode(255, FXSYS_round(R * 255), FXSYS_round(G * 255), | |
| 825 FXSYS_round(B * 255)); | |
| 826 color_values[0] += m_pCompData[0].m_DecodeStep; | |
| 827 color_values[1] += m_pCompData[0].m_DecodeStep; | |
| 828 color_values[2] += m_pCompData[0].m_DecodeStep; | |
| 829 m_pColorSpace->GetRGB(color_values, R, G, B); | |
| 830 FX_ARGB argb1 = ArgbEncode(255, FXSYS_round(R * 255), FXSYS_round(G * 255), | |
| 831 FXSYS_round(B * 255)); | |
| 832 if (argb0 != 0xFF000000 || argb1 != 0xFFFFFFFF) { | |
| 833 SetPaletteArgb(0, argb0); | |
| 834 SetPaletteArgb(1, argb1); | |
| 835 } | |
| 836 return; | |
| 837 } | |
| 838 if (m_pColorSpace == CPDF_ColorSpace::GetStockCS(PDFCS_DEVICEGRAY) && | |
| 839 m_bpc == 8 && m_bDefaultDecode) { | |
| 840 } else { | |
| 841 int palette_count = 1 << (m_bpc * m_nComponents); | |
| 842 CFX_FixedBufGrow<FX_FLOAT, 16> color_values(m_nComponents); | |
| 843 FX_FLOAT* color_value = color_values; | |
| 844 for (int i = 0; i < palette_count; i++) { | |
| 845 int color_data = i; | |
| 846 for (uint32_t j = 0; j < m_nComponents; j++) { | |
| 847 int encoded_component = color_data % (1 << m_bpc); | |
| 848 color_data /= 1 << m_bpc; | |
| 849 color_value[j] = m_pCompData[j].m_DecodeMin + | |
| 850 m_pCompData[j].m_DecodeStep * encoded_component; | |
| 851 } | |
| 852 FX_FLOAT R = 0, G = 0, B = 0; | |
| 853 if (m_nComponents == 1 && m_Family == PDFCS_ICCBASED && | |
| 854 m_pColorSpace->CountComponents() > 1) { | |
| 855 int nComponents = m_pColorSpace->CountComponents(); | |
| 856 std::vector<FX_FLOAT> temp_buf(nComponents); | |
| 857 for (int k = 0; k < nComponents; k++) { | |
| 858 temp_buf[k] = *color_value; | |
| 859 } | |
| 860 m_pColorSpace->GetRGB(temp_buf.data(), R, G, B); | |
| 861 } else { | |
| 862 m_pColorSpace->GetRGB(color_value, R, G, B); | |
| 863 } | |
| 864 SetPaletteArgb(i, ArgbEncode(255, FXSYS_round(R * 255), | |
| 865 FXSYS_round(G * 255), FXSYS_round(B * 255))); | |
| 866 } | |
| 867 } | |
| 868 } | |
| 869 | |
| 870 void CPDF_DIBSource::ValidateDictParam() { | |
| 871 m_bpc = m_bpc_orig; | |
| 872 CPDF_Object* pFilter = m_pDict->GetDirectObjectFor("Filter"); | |
| 873 if (pFilter) { | |
| 874 if (pFilter->IsName()) { | |
| 875 CFX_ByteString filter = pFilter->GetString(); | |
| 876 if (filter == "CCITTFaxDecode" || filter == "JBIG2Decode") { | |
| 877 m_bpc = 1; | |
| 878 m_nComponents = 1; | |
| 879 } else if (filter == "RunLengthDecode") { | |
| 880 if (m_bpc != 1) { | |
| 881 m_bpc = 8; | |
| 882 } | |
| 883 } else if (filter == "DCTDecode") { | |
| 884 m_bpc = 8; | |
| 885 } | |
| 886 } else if (CPDF_Array* pArray = pFilter->AsArray()) { | |
| 887 CFX_ByteString filter = pArray->GetStringAt(pArray->GetCount() - 1); | |
| 888 if (filter == "CCITTFaxDecode" || filter == "JBIG2Decode") { | |
| 889 m_bpc = 1; | |
| 890 m_nComponents = 1; | |
| 891 } else if (filter == "DCTDecode") { | |
| 892 // Previously, filter == "RunLengthDecode" was checked in the "if" | |
| 893 // statement as well, but too many documents don't conform to it. | |
| 894 m_bpc = 8; | |
| 895 } | |
| 896 } | |
| 897 } | |
| 898 | |
| 899 if (!IsAllowedBPCValue(m_bpc)) | |
| 900 m_bpc = 0; | |
| 901 } | |
| 902 | |
| 903 void CPDF_DIBSource::TranslateScanline24bpp(uint8_t* dest_scan, | |
| 904 const uint8_t* src_scan) const { | |
| 905 if (m_bpc == 0) { | |
| 906 return; | |
| 907 } | |
| 908 unsigned int max_data = (1 << m_bpc) - 1; | |
| 909 if (m_bDefaultDecode) { | |
| 910 if (m_Family == PDFCS_DEVICERGB || m_Family == PDFCS_CALRGB) { | |
| 911 if (m_nComponents != 3) | |
| 912 return; | |
| 913 | |
| 914 const uint8_t* src_pos = src_scan; | |
| 915 switch (m_bpc) { | |
| 916 case 16: | |
| 917 for (int col = 0; col < m_Width; col++) { | |
| 918 *dest_scan++ = src_pos[4]; | |
| 919 *dest_scan++ = src_pos[2]; | |
| 920 *dest_scan++ = *src_pos; | |
| 921 src_pos += 6; | |
| 922 } | |
| 923 break; | |
| 924 case 8: | |
| 925 for (int column = 0; column < m_Width; column++) { | |
| 926 *dest_scan++ = src_pos[2]; | |
| 927 *dest_scan++ = src_pos[1]; | |
| 928 *dest_scan++ = *src_pos; | |
| 929 src_pos += 3; | |
| 930 } | |
| 931 break; | |
| 932 default: | |
| 933 uint64_t src_bit_pos = 0; | |
| 934 size_t dest_byte_pos = 0; | |
| 935 for (int column = 0; column < m_Width; column++) { | |
| 936 unsigned int R = GetBits8(src_scan, src_bit_pos, m_bpc); | |
| 937 src_bit_pos += m_bpc; | |
| 938 unsigned int G = GetBits8(src_scan, src_bit_pos, m_bpc); | |
| 939 src_bit_pos += m_bpc; | |
| 940 unsigned int B = GetBits8(src_scan, src_bit_pos, m_bpc); | |
| 941 src_bit_pos += m_bpc; | |
| 942 R = std::min(R, max_data); | |
| 943 G = std::min(G, max_data); | |
| 944 B = std::min(B, max_data); | |
| 945 dest_scan[dest_byte_pos] = B * 255 / max_data; | |
| 946 dest_scan[dest_byte_pos + 1] = G * 255 / max_data; | |
| 947 dest_scan[dest_byte_pos + 2] = R * 255 / max_data; | |
| 948 dest_byte_pos += 3; | |
| 949 } | |
| 950 break; | |
| 951 } | |
| 952 return; | |
| 953 } | |
| 954 if (m_bpc == 8) { | |
| 955 if (m_nComponents == m_pColorSpace->CountComponents()) | |
| 956 m_pColorSpace->TranslateImageLine(dest_scan, src_scan, m_Width, m_Width, | |
| 957 m_Height, TransMask()); | |
| 958 return; | |
| 959 } | |
| 960 } | |
| 961 CFX_FixedBufGrow<FX_FLOAT, 16> color_values1(m_nComponents); | |
| 962 FX_FLOAT* color_values = color_values1; | |
| 963 FX_FLOAT R = 0.0f, G = 0.0f, B = 0.0f; | |
| 964 if (m_bpc == 8) { | |
| 965 uint64_t src_byte_pos = 0; | |
| 966 size_t dest_byte_pos = 0; | |
| 967 for (int column = 0; column < m_Width; column++) { | |
| 968 for (uint32_t color = 0; color < m_nComponents; color++) { | |
| 969 uint8_t data = src_scan[src_byte_pos++]; | |
| 970 color_values[color] = m_pCompData[color].m_DecodeMin + | |
| 971 m_pCompData[color].m_DecodeStep * data; | |
| 972 } | |
| 973 if (TransMask()) { | |
| 974 FX_FLOAT k = 1.0f - color_values[3]; | |
| 975 R = (1.0f - color_values[0]) * k; | |
| 976 G = (1.0f - color_values[1]) * k; | |
| 977 B = (1.0f - color_values[2]) * k; | |
| 978 } else { | |
| 979 m_pColorSpace->GetRGB(color_values, R, G, B); | |
| 980 } | |
| 981 R = ClampValue(R, 1.0f); | |
| 982 G = ClampValue(G, 1.0f); | |
| 983 B = ClampValue(B, 1.0f); | |
| 984 dest_scan[dest_byte_pos] = static_cast<uint8_t>(B * 255); | |
| 985 dest_scan[dest_byte_pos + 1] = static_cast<uint8_t>(G * 255); | |
| 986 dest_scan[dest_byte_pos + 2] = static_cast<uint8_t>(R * 255); | |
| 987 dest_byte_pos += 3; | |
| 988 } | |
| 989 } else { | |
| 990 uint64_t src_bit_pos = 0; | |
| 991 size_t dest_byte_pos = 0; | |
| 992 for (int column = 0; column < m_Width; column++) { | |
| 993 for (uint32_t color = 0; color < m_nComponents; color++) { | |
| 994 unsigned int data = GetBits8(src_scan, src_bit_pos, m_bpc); | |
| 995 color_values[color] = m_pCompData[color].m_DecodeMin + | |
| 996 m_pCompData[color].m_DecodeStep * data; | |
| 997 src_bit_pos += m_bpc; | |
| 998 } | |
| 999 if (TransMask()) { | |
| 1000 FX_FLOAT k = 1.0f - color_values[3]; | |
| 1001 R = (1.0f - color_values[0]) * k; | |
| 1002 G = (1.0f - color_values[1]) * k; | |
| 1003 B = (1.0f - color_values[2]) * k; | |
| 1004 } else { | |
| 1005 m_pColorSpace->GetRGB(color_values, R, G, B); | |
| 1006 } | |
| 1007 R = ClampValue(R, 1.0f); | |
| 1008 G = ClampValue(G, 1.0f); | |
| 1009 B = ClampValue(B, 1.0f); | |
| 1010 dest_scan[dest_byte_pos] = static_cast<uint8_t>(B * 255); | |
| 1011 dest_scan[dest_byte_pos + 1] = static_cast<uint8_t>(G * 255); | |
| 1012 dest_scan[dest_byte_pos + 2] = static_cast<uint8_t>(R * 255); | |
| 1013 dest_byte_pos += 3; | |
| 1014 } | |
| 1015 } | |
| 1016 } | |
| 1017 | |
| 1018 uint8_t* CPDF_DIBSource::GetBuffer() const { | |
| 1019 return m_pCachedBitmap ? m_pCachedBitmap->GetBuffer() : nullptr; | |
| 1020 } | |
| 1021 | |
| 1022 const uint8_t* CPDF_DIBSource::GetScanline(int line) const { | |
| 1023 if (m_bpc == 0) { | |
| 1024 return nullptr; | |
| 1025 } | |
| 1026 FX_SAFE_UINT32 src_pitch = CalculatePitch8(m_bpc, m_nComponents, m_Width); | |
| 1027 if (!src_pitch.IsValid()) | |
| 1028 return nullptr; | |
| 1029 uint32_t src_pitch_value = src_pitch.ValueOrDie(); | |
| 1030 const uint8_t* pSrcLine = nullptr; | |
| 1031 if (m_pCachedBitmap && src_pitch_value <= m_pCachedBitmap->GetPitch()) { | |
| 1032 if (line >= m_pCachedBitmap->GetHeight()) { | |
| 1033 line = m_pCachedBitmap->GetHeight() - 1; | |
| 1034 } | |
| 1035 pSrcLine = m_pCachedBitmap->GetScanline(line); | |
| 1036 } else if (m_pDecoder) { | |
| 1037 pSrcLine = m_pDecoder->GetScanline(line); | |
| 1038 } else { | |
| 1039 if (m_pStreamAcc->GetSize() >= (line + 1) * src_pitch_value) { | |
| 1040 pSrcLine = m_pStreamAcc->GetData() + line * src_pitch_value; | |
| 1041 } | |
| 1042 } | |
| 1043 if (!pSrcLine) { | |
| 1044 uint8_t* pLineBuf = m_pMaskedLine ? m_pMaskedLine : m_pLineBuf; | |
| 1045 FXSYS_memset(pLineBuf, 0xFF, m_Pitch); | |
| 1046 return pLineBuf; | |
| 1047 } | |
| 1048 if (m_bpc * m_nComponents == 1) { | |
| 1049 if (m_bImageMask && m_bDefaultDecode) { | |
| 1050 for (uint32_t i = 0; i < src_pitch_value; i++) { | |
| 1051 m_pLineBuf[i] = ~pSrcLine[i]; | |
| 1052 } | |
| 1053 } else if (m_bColorKey) { | |
| 1054 uint32_t reset_argb, set_argb; | |
| 1055 reset_argb = m_pPalette ? m_pPalette.get()[0] : 0xFF000000; | |
| 1056 set_argb = m_pPalette ? m_pPalette.get()[1] : 0xFFFFFFFF; | |
| 1057 if (m_pCompData[0].m_ColorKeyMin == 0) { | |
| 1058 reset_argb = 0; | |
| 1059 } | |
| 1060 if (m_pCompData[0].m_ColorKeyMax == 1) { | |
| 1061 set_argb = 0; | |
| 1062 } | |
| 1063 set_argb = FXARGB_TODIB(set_argb); | |
| 1064 reset_argb = FXARGB_TODIB(reset_argb); | |
| 1065 uint32_t* dest_scan = reinterpret_cast<uint32_t*>(m_pMaskedLine); | |
| 1066 for (int col = 0; col < m_Width; col++) { | |
| 1067 if (pSrcLine[col / 8] & (1 << (7 - col % 8))) { | |
| 1068 *dest_scan = set_argb; | |
| 1069 } else { | |
| 1070 *dest_scan = reset_argb; | |
| 1071 } | |
| 1072 dest_scan++; | |
| 1073 } | |
| 1074 return m_pMaskedLine; | |
| 1075 } else { | |
| 1076 FXSYS_memcpy(m_pLineBuf, pSrcLine, src_pitch_value); | |
| 1077 } | |
| 1078 return m_pLineBuf; | |
| 1079 } | |
| 1080 if (m_bpc * m_nComponents <= 8) { | |
| 1081 if (m_bpc == 8) { | |
| 1082 FXSYS_memcpy(m_pLineBuf, pSrcLine, src_pitch_value); | |
| 1083 } else { | |
| 1084 uint64_t src_bit_pos = 0; | |
| 1085 for (int col = 0; col < m_Width; col++) { | |
| 1086 unsigned int color_index = 0; | |
| 1087 for (uint32_t color = 0; color < m_nComponents; color++) { | |
| 1088 unsigned int data = GetBits8(pSrcLine, src_bit_pos, m_bpc); | |
| 1089 color_index |= data << (color * m_bpc); | |
| 1090 src_bit_pos += m_bpc; | |
| 1091 } | |
| 1092 m_pLineBuf[col] = color_index; | |
| 1093 } | |
| 1094 } | |
| 1095 if (m_bColorKey) { | |
| 1096 uint8_t* pDestPixel = m_pMaskedLine; | |
| 1097 const uint8_t* pSrcPixel = m_pLineBuf; | |
| 1098 for (int col = 0; col < m_Width; col++) { | |
| 1099 uint8_t index = *pSrcPixel++; | |
| 1100 if (m_pPalette) { | |
| 1101 *pDestPixel++ = FXARGB_B(m_pPalette.get()[index]); | |
| 1102 *pDestPixel++ = FXARGB_G(m_pPalette.get()[index]); | |
| 1103 *pDestPixel++ = FXARGB_R(m_pPalette.get()[index]); | |
| 1104 } else { | |
| 1105 *pDestPixel++ = index; | |
| 1106 *pDestPixel++ = index; | |
| 1107 *pDestPixel++ = index; | |
| 1108 } | |
| 1109 *pDestPixel = (index < m_pCompData[0].m_ColorKeyMin || | |
| 1110 index > m_pCompData[0].m_ColorKeyMax) | |
| 1111 ? 0xFF | |
| 1112 : 0; | |
| 1113 pDestPixel++; | |
| 1114 } | |
| 1115 return m_pMaskedLine; | |
| 1116 } | |
| 1117 return m_pLineBuf; | |
| 1118 } | |
| 1119 if (m_bColorKey) { | |
| 1120 if (m_nComponents == 3 && m_bpc == 8) { | |
| 1121 uint8_t* alpha_channel = m_pMaskedLine + 3; | |
| 1122 for (int col = 0; col < m_Width; col++) { | |
| 1123 const uint8_t* pPixel = pSrcLine + col * 3; | |
| 1124 alpha_channel[col * 4] = (pPixel[0] < m_pCompData[0].m_ColorKeyMin || | |
| 1125 pPixel[0] > m_pCompData[0].m_ColorKeyMax || | |
| 1126 pPixel[1] < m_pCompData[1].m_ColorKeyMin || | |
| 1127 pPixel[1] > m_pCompData[1].m_ColorKeyMax || | |
| 1128 pPixel[2] < m_pCompData[2].m_ColorKeyMin || | |
| 1129 pPixel[2] > m_pCompData[2].m_ColorKeyMax) | |
| 1130 ? 0xFF | |
| 1131 : 0; | |
| 1132 } | |
| 1133 } else { | |
| 1134 FXSYS_memset(m_pMaskedLine, 0xFF, m_Pitch); | |
| 1135 } | |
| 1136 } | |
| 1137 if (m_pColorSpace) { | |
| 1138 TranslateScanline24bpp(m_pLineBuf, pSrcLine); | |
| 1139 pSrcLine = m_pLineBuf; | |
| 1140 } | |
| 1141 if (m_bColorKey) { | |
| 1142 const uint8_t* pSrcPixel = pSrcLine; | |
| 1143 uint8_t* pDestPixel = m_pMaskedLine; | |
| 1144 for (int col = 0; col < m_Width; col++) { | |
| 1145 *pDestPixel++ = *pSrcPixel++; | |
| 1146 *pDestPixel++ = *pSrcPixel++; | |
| 1147 *pDestPixel++ = *pSrcPixel++; | |
| 1148 pDestPixel++; | |
| 1149 } | |
| 1150 return m_pMaskedLine; | |
| 1151 } | |
| 1152 return pSrcLine; | |
| 1153 } | |
| 1154 | |
| 1155 FX_BOOL CPDF_DIBSource::SkipToScanline(int line, IFX_Pause* pPause) const { | |
| 1156 return m_pDecoder && m_pDecoder->SkipToScanline(line, pPause); | |
| 1157 } | |
| 1158 | |
| 1159 void CPDF_DIBSource::DownSampleScanline(int line, | |
| 1160 uint8_t* dest_scan, | |
| 1161 int dest_bpp, | |
| 1162 int dest_width, | |
| 1163 FX_BOOL bFlipX, | |
| 1164 int clip_left, | |
| 1165 int clip_width) const { | |
| 1166 if (line < 0 || !dest_scan || dest_bpp <= 0 || dest_width <= 0 || | |
| 1167 clip_left < 0 || clip_width <= 0) { | |
| 1168 return; | |
| 1169 } | |
| 1170 | |
| 1171 uint32_t src_width = m_Width; | |
| 1172 FX_SAFE_UINT32 pitch = CalculatePitch8(m_bpc, m_nComponents, m_Width); | |
| 1173 if (!pitch.IsValid()) | |
| 1174 return; | |
| 1175 | |
| 1176 const uint8_t* pSrcLine = nullptr; | |
| 1177 if (m_pCachedBitmap) { | |
| 1178 pSrcLine = m_pCachedBitmap->GetScanline(line); | |
| 1179 } else if (m_pDecoder) { | |
| 1180 pSrcLine = m_pDecoder->GetScanline(line); | |
| 1181 } else { | |
| 1182 uint32_t src_pitch = pitch.ValueOrDie(); | |
| 1183 pitch *= (line + 1); | |
| 1184 if (!pitch.IsValid()) { | |
| 1185 return; | |
| 1186 } | |
| 1187 | |
| 1188 if (m_pStreamAcc->GetSize() >= pitch.ValueOrDie()) { | |
| 1189 pSrcLine = m_pStreamAcc->GetData() + line * src_pitch; | |
| 1190 } | |
| 1191 } | |
| 1192 int orig_Bpp = m_bpc * m_nComponents / 8; | |
| 1193 int dest_Bpp = dest_bpp / 8; | |
| 1194 if (!pSrcLine) { | |
| 1195 FXSYS_memset(dest_scan, 0xFF, dest_Bpp * clip_width); | |
| 1196 return; | |
| 1197 } | |
| 1198 | |
| 1199 FX_SAFE_INT32 max_src_x = clip_left; | |
| 1200 max_src_x += clip_width - 1; | |
| 1201 max_src_x *= src_width; | |
| 1202 max_src_x /= dest_width; | |
| 1203 if (!max_src_x.IsValid()) | |
| 1204 return; | |
| 1205 | |
| 1206 if (m_bpc * m_nComponents == 1) { | |
| 1207 DownSampleScanline1Bit(orig_Bpp, dest_Bpp, src_width, pSrcLine, dest_scan, | |
| 1208 dest_width, bFlipX, clip_left, clip_width); | |
| 1209 } else if (m_bpc * m_nComponents <= 8) { | |
| 1210 DownSampleScanline8Bit(orig_Bpp, dest_Bpp, src_width, pSrcLine, dest_scan, | |
| 1211 dest_width, bFlipX, clip_left, clip_width); | |
| 1212 } else { | |
| 1213 DownSampleScanline32Bit(orig_Bpp, dest_Bpp, src_width, pSrcLine, dest_scan, | |
| 1214 dest_width, bFlipX, clip_left, clip_width); | |
| 1215 } | |
| 1216 } | |
| 1217 | |
| 1218 void CPDF_DIBSource::DownSampleScanline1Bit(int orig_Bpp, | |
| 1219 int dest_Bpp, | |
| 1220 uint32_t src_width, | |
| 1221 const uint8_t* pSrcLine, | |
| 1222 uint8_t* dest_scan, | |
| 1223 int dest_width, | |
| 1224 FX_BOOL bFlipX, | |
| 1225 int clip_left, | |
| 1226 int clip_width) const { | |
| 1227 uint32_t set_argb = (uint32_t)-1; | |
| 1228 uint32_t reset_argb = 0; | |
| 1229 if (m_bImageMask) { | |
| 1230 if (m_bDefaultDecode) { | |
| 1231 set_argb = 0; | |
| 1232 reset_argb = (uint32_t)-1; | |
| 1233 } | |
| 1234 } else if (m_bColorKey) { | |
| 1235 reset_argb = m_pPalette ? m_pPalette.get()[0] : 0xFF000000; | |
| 1236 set_argb = m_pPalette ? m_pPalette.get()[1] : 0xFFFFFFFF; | |
| 1237 if (m_pCompData[0].m_ColorKeyMin == 0) { | |
| 1238 reset_argb = 0; | |
| 1239 } | |
| 1240 if (m_pCompData[0].m_ColorKeyMax == 1) { | |
| 1241 set_argb = 0; | |
| 1242 } | |
| 1243 set_argb = FXARGB_TODIB(set_argb); | |
| 1244 reset_argb = FXARGB_TODIB(reset_argb); | |
| 1245 uint32_t* dest_scan_dword = reinterpret_cast<uint32_t*>(dest_scan); | |
| 1246 for (int i = 0; i < clip_width; i++) { | |
| 1247 uint32_t src_x = (clip_left + i) * src_width / dest_width; | |
| 1248 if (bFlipX) { | |
| 1249 src_x = src_width - src_x - 1; | |
| 1250 } | |
| 1251 src_x %= src_width; | |
| 1252 if (pSrcLine[src_x / 8] & (1 << (7 - src_x % 8))) { | |
| 1253 dest_scan_dword[i] = set_argb; | |
| 1254 } else { | |
| 1255 dest_scan_dword[i] = reset_argb; | |
| 1256 } | |
| 1257 } | |
| 1258 return; | |
| 1259 } else { | |
| 1260 if (dest_Bpp == 1) { | |
| 1261 } else if (m_pPalette) { | |
| 1262 reset_argb = m_pPalette.get()[0]; | |
| 1263 set_argb = m_pPalette.get()[1]; | |
| 1264 } | |
| 1265 } | |
| 1266 for (int i = 0; i < clip_width; i++) { | |
| 1267 uint32_t src_x = (clip_left + i) * src_width / dest_width; | |
| 1268 if (bFlipX) { | |
| 1269 src_x = src_width - src_x - 1; | |
| 1270 } | |
| 1271 src_x %= src_width; | |
| 1272 int dest_pos = i * dest_Bpp; | |
| 1273 if (pSrcLine[src_x / 8] & (1 << (7 - src_x % 8))) { | |
| 1274 if (dest_Bpp == 1) { | |
| 1275 dest_scan[dest_pos] = static_cast<uint8_t>(set_argb); | |
| 1276 } else if (dest_Bpp == 3) { | |
| 1277 dest_scan[dest_pos] = FXARGB_B(set_argb); | |
| 1278 dest_scan[dest_pos + 1] = FXARGB_G(set_argb); | |
| 1279 dest_scan[dest_pos + 2] = FXARGB_R(set_argb); | |
| 1280 } else { | |
| 1281 *reinterpret_cast<uint32_t*>(dest_scan + dest_pos) = set_argb; | |
| 1282 } | |
| 1283 } else { | |
| 1284 if (dest_Bpp == 1) { | |
| 1285 dest_scan[dest_pos] = static_cast<uint8_t>(reset_argb); | |
| 1286 } else if (dest_Bpp == 3) { | |
| 1287 dest_scan[dest_pos] = FXARGB_B(reset_argb); | |
| 1288 dest_scan[dest_pos + 1] = FXARGB_G(reset_argb); | |
| 1289 dest_scan[dest_pos + 2] = FXARGB_R(reset_argb); | |
| 1290 } else { | |
| 1291 *reinterpret_cast<uint32_t*>(dest_scan + dest_pos) = reset_argb; | |
| 1292 } | |
| 1293 } | |
| 1294 } | |
| 1295 } | |
| 1296 | |
| 1297 void CPDF_DIBSource::DownSampleScanline8Bit(int orig_Bpp, | |
| 1298 int dest_Bpp, | |
| 1299 uint32_t src_width, | |
| 1300 const uint8_t* pSrcLine, | |
| 1301 uint8_t* dest_scan, | |
| 1302 int dest_width, | |
| 1303 FX_BOOL bFlipX, | |
| 1304 int clip_left, | |
| 1305 int clip_width) const { | |
| 1306 if (m_bpc < 8) { | |
| 1307 uint64_t src_bit_pos = 0; | |
| 1308 for (uint32_t col = 0; col < src_width; col++) { | |
| 1309 unsigned int color_index = 0; | |
| 1310 for (uint32_t color = 0; color < m_nComponents; color++) { | |
| 1311 unsigned int data = GetBits8(pSrcLine, src_bit_pos, m_bpc); | |
| 1312 color_index |= data << (color * m_bpc); | |
| 1313 src_bit_pos += m_bpc; | |
| 1314 } | |
| 1315 m_pLineBuf[col] = color_index; | |
| 1316 } | |
| 1317 pSrcLine = m_pLineBuf; | |
| 1318 } | |
| 1319 if (m_bColorKey) { | |
| 1320 for (int i = 0; i < clip_width; i++) { | |
| 1321 uint32_t src_x = (clip_left + i) * src_width / dest_width; | |
| 1322 if (bFlipX) { | |
| 1323 src_x = src_width - src_x - 1; | |
| 1324 } | |
| 1325 src_x %= src_width; | |
| 1326 uint8_t* pDestPixel = dest_scan + i * 4; | |
| 1327 uint8_t index = pSrcLine[src_x]; | |
| 1328 if (m_pPalette) { | |
| 1329 *pDestPixel++ = FXARGB_B(m_pPalette.get()[index]); | |
| 1330 *pDestPixel++ = FXARGB_G(m_pPalette.get()[index]); | |
| 1331 *pDestPixel++ = FXARGB_R(m_pPalette.get()[index]); | |
| 1332 } else { | |
| 1333 *pDestPixel++ = index; | |
| 1334 *pDestPixel++ = index; | |
| 1335 *pDestPixel++ = index; | |
| 1336 } | |
| 1337 *pDestPixel = (index < m_pCompData[0].m_ColorKeyMin || | |
| 1338 index > m_pCompData[0].m_ColorKeyMax) | |
| 1339 ? 0xFF | |
| 1340 : 0; | |
| 1341 } | |
| 1342 return; | |
| 1343 } | |
| 1344 for (int i = 0; i < clip_width; i++) { | |
| 1345 uint32_t src_x = (clip_left + i) * src_width / dest_width; | |
| 1346 if (bFlipX) { | |
| 1347 src_x = src_width - src_x - 1; | |
| 1348 } | |
| 1349 src_x %= src_width; | |
| 1350 uint8_t index = pSrcLine[src_x]; | |
| 1351 if (dest_Bpp == 1) { | |
| 1352 dest_scan[i] = index; | |
| 1353 } else { | |
| 1354 int dest_pos = i * dest_Bpp; | |
| 1355 FX_ARGB argb = m_pPalette.get()[index]; | |
| 1356 dest_scan[dest_pos] = FXARGB_B(argb); | |
| 1357 dest_scan[dest_pos + 1] = FXARGB_G(argb); | |
| 1358 dest_scan[dest_pos + 2] = FXARGB_R(argb); | |
| 1359 } | |
| 1360 } | |
| 1361 } | |
| 1362 | |
| 1363 void CPDF_DIBSource::DownSampleScanline32Bit(int orig_Bpp, | |
| 1364 int dest_Bpp, | |
| 1365 uint32_t src_width, | |
| 1366 const uint8_t* pSrcLine, | |
| 1367 uint8_t* dest_scan, | |
| 1368 int dest_width, | |
| 1369 FX_BOOL bFlipX, | |
| 1370 int clip_left, | |
| 1371 int clip_width) const { | |
| 1372 // last_src_x used to store the last seen src_x position which should be | |
| 1373 // in [0, src_width). Set the initial value to be an invalid src_x value. | |
| 1374 uint32_t last_src_x = src_width; | |
| 1375 FX_ARGB last_argb = FXARGB_MAKE(0xFF, 0xFF, 0xFF, 0xFF); | |
| 1376 FX_FLOAT unit_To8Bpc = 255.0f / ((1 << m_bpc) - 1); | |
| 1377 for (int i = 0; i < clip_width; i++) { | |
| 1378 int dest_x = clip_left + i; | |
| 1379 uint32_t src_x = (bFlipX ? (dest_width - dest_x - 1) : dest_x) * | |
| 1380 (int64_t)src_width / dest_width; | |
| 1381 src_x %= src_width; | |
| 1382 | |
| 1383 uint8_t* pDestPixel = dest_scan + i * dest_Bpp; | |
| 1384 FX_ARGB argb; | |
| 1385 if (src_x == last_src_x) { | |
| 1386 argb = last_argb; | |
| 1387 } else { | |
| 1388 CFX_FixedBufGrow<uint8_t, 128> extracted_components(m_nComponents); | |
| 1389 const uint8_t* pSrcPixel = nullptr; | |
| 1390 if (m_bpc % 8 != 0) { | |
| 1391 // No need to check for 32-bit overflow, as |src_x| is bounded by | |
| 1392 // |src_width| and DownSampleScanline() already checked for overflow | |
| 1393 // with the pitch calculation. | |
| 1394 size_t num_bits = src_x * m_bpc * m_nComponents; | |
| 1395 uint64_t src_bit_pos = num_bits % 8; | |
| 1396 pSrcPixel = pSrcLine + num_bits / 8; | |
| 1397 for (uint32_t j = 0; j < m_nComponents; ++j) { | |
| 1398 extracted_components[j] = static_cast<uint8_t>( | |
| 1399 GetBits8(pSrcPixel, src_bit_pos, m_bpc) * unit_To8Bpc); | |
| 1400 src_bit_pos += m_bpc; | |
| 1401 } | |
| 1402 pSrcPixel = extracted_components; | |
| 1403 } else { | |
| 1404 pSrcPixel = pSrcLine + src_x * orig_Bpp; | |
| 1405 if (m_bpc == 16) { | |
| 1406 for (uint32_t j = 0; j < m_nComponents; ++j) | |
| 1407 extracted_components[j] = pSrcPixel[j * 2]; | |
| 1408 pSrcPixel = extracted_components; | |
| 1409 } | |
| 1410 } | |
| 1411 | |
| 1412 if (m_pColorSpace) { | |
| 1413 uint8_t color[4]; | |
| 1414 const FX_BOOL bTransMask = TransMask(); | |
| 1415 if (m_bDefaultDecode) { | |
| 1416 m_pColorSpace->TranslateImageLine(color, pSrcPixel, 1, 0, 0, | |
| 1417 bTransMask); | |
| 1418 } else { | |
| 1419 for (uint32_t j = 0; j < m_nComponents; ++j) { | |
| 1420 FX_FLOAT component_value = | |
| 1421 static_cast<FX_FLOAT>(extracted_components[j]); | |
| 1422 int color_value = static_cast<int>( | |
| 1423 (m_pCompData[j].m_DecodeMin + | |
| 1424 m_pCompData[j].m_DecodeStep * component_value) * | |
| 1425 255.0f + | |
| 1426 0.5f); | |
| 1427 extracted_components[j] = | |
| 1428 color_value > 255 ? 255 : (color_value < 0 ? 0 : color_value); | |
| 1429 } | |
| 1430 m_pColorSpace->TranslateImageLine(color, extracted_components, 1, 0, | |
| 1431 0, bTransMask); | |
| 1432 } | |
| 1433 argb = FXARGB_MAKE(0xFF, color[2], color[1], color[0]); | |
| 1434 } else { | |
| 1435 argb = FXARGB_MAKE(0xFF, pSrcPixel[2], pSrcPixel[1], pSrcPixel[0]); | |
| 1436 } | |
| 1437 if (m_bColorKey) { | |
| 1438 int alpha = 0xFF; | |
| 1439 if (m_nComponents == 3 && m_bpc == 8) { | |
| 1440 alpha = (pSrcPixel[0] < m_pCompData[0].m_ColorKeyMin || | |
| 1441 pSrcPixel[0] > m_pCompData[0].m_ColorKeyMax || | |
| 1442 pSrcPixel[1] < m_pCompData[1].m_ColorKeyMin || | |
| 1443 pSrcPixel[1] > m_pCompData[1].m_ColorKeyMax || | |
| 1444 pSrcPixel[2] < m_pCompData[2].m_ColorKeyMin || | |
| 1445 pSrcPixel[2] > m_pCompData[2].m_ColorKeyMax) | |
| 1446 ? 0xFF | |
| 1447 : 0; | |
| 1448 } | |
| 1449 argb &= 0xFFFFFF; | |
| 1450 argb |= alpha << 24; | |
| 1451 } | |
| 1452 last_src_x = src_x; | |
| 1453 last_argb = argb; | |
| 1454 } | |
| 1455 if (dest_Bpp == 4) { | |
| 1456 *reinterpret_cast<uint32_t*>(pDestPixel) = FXARGB_TODIB(argb); | |
| 1457 } else { | |
| 1458 *pDestPixel++ = FXARGB_B(argb); | |
| 1459 *pDestPixel++ = FXARGB_G(argb); | |
| 1460 *pDestPixel = FXARGB_R(argb); | |
| 1461 } | |
| 1462 } | |
| 1463 } | |
| 1464 | |
| 1465 FX_BOOL CPDF_DIBSource::TransMask() const { | |
| 1466 return m_bLoadMask && m_GroupFamily == PDFCS_DEVICECMYK && | |
| 1467 m_Family == PDFCS_DEVICECMYK; | |
| 1468 } | |
| 1469 | |
| 1470 CPDF_ImageLoaderHandle::CPDF_ImageLoaderHandle() { | |
| 1471 m_pImageLoader = nullptr; | |
| 1472 m_pCache = nullptr; | |
| 1473 m_pImage = nullptr; | |
| 1474 } | |
| 1475 | |
| 1476 CPDF_ImageLoaderHandle::~CPDF_ImageLoaderHandle() {} | |
| 1477 | |
| 1478 FX_BOOL CPDF_ImageLoaderHandle::Start(CPDF_ImageLoader* pImageLoader, | |
| 1479 const CPDF_ImageObject* pImage, | |
| 1480 CPDF_PageRenderCache* pCache, | |
| 1481 FX_BOOL bStdCS, | |
| 1482 uint32_t GroupFamily, | |
| 1483 FX_BOOL bLoadMask, | |
| 1484 CPDF_RenderStatus* pRenderStatus, | |
| 1485 int32_t nDownsampleWidth, | |
| 1486 int32_t nDownsampleHeight) { | |
| 1487 m_pImageLoader = pImageLoader; | |
| 1488 m_pCache = pCache; | |
| 1489 m_pImage = const_cast<CPDF_ImageObject*>(pImage); | |
| 1490 m_nDownsampleWidth = nDownsampleWidth; | |
| 1491 m_nDownsampleHeight = nDownsampleHeight; | |
| 1492 FX_BOOL ret; | |
| 1493 if (pCache) { | |
| 1494 ret = pCache->StartGetCachedBitmap( | |
| 1495 m_pImage->GetImage()->GetStream(), bStdCS, GroupFamily, bLoadMask, | |
| 1496 pRenderStatus, m_nDownsampleWidth, m_nDownsampleHeight); | |
| 1497 } else { | |
| 1498 ret = m_pImage->GetImage()->StartLoadDIBSource( | |
| 1499 pRenderStatus->m_pFormResource, pRenderStatus->m_pPageResource, bStdCS, | |
| 1500 GroupFamily, bLoadMask); | |
| 1501 } | |
| 1502 if (!ret) | |
| 1503 HandleFailure(); | |
| 1504 return ret; | |
| 1505 } | |
| 1506 | |
| 1507 FX_BOOL CPDF_ImageLoaderHandle::Continue(IFX_Pause* pPause) { | |
| 1508 FX_BOOL ret = m_pCache ? m_pCache->Continue(pPause) | |
| 1509 : m_pImage->GetImage()->Continue(pPause); | |
| 1510 if (!ret) | |
| 1511 HandleFailure(); | |
| 1512 return ret; | |
| 1513 } | |
| 1514 | |
| 1515 void CPDF_ImageLoaderHandle::HandleFailure() { | |
| 1516 if (m_pCache) { | |
| 1517 CPDF_ImageCacheEntry* entry = m_pCache->GetCurImageCacheEntry(); | |
| 1518 m_pImageLoader->m_bCached = TRUE; | |
| 1519 m_pImageLoader->m_pBitmap = entry->DetachBitmap(); | |
| 1520 m_pImageLoader->m_pMask = entry->DetachMask(); | |
| 1521 m_pImageLoader->m_MatteColor = entry->m_MatteColor; | |
| 1522 } else { | |
| 1523 CPDF_Image* pImage = m_pImage->GetImage(); | |
| 1524 m_pImageLoader->m_bCached = FALSE; | |
| 1525 m_pImageLoader->m_pBitmap = pImage->DetachBitmap(); | |
| 1526 m_pImageLoader->m_pMask = pImage->DetachMask(); | |
| 1527 m_pImageLoader->m_MatteColor = pImage->m_MatteColor; | |
| 1528 } | |
| 1529 } | |
| 1530 | |
| 1531 FX_BOOL CPDF_ImageLoader::Start( | |
| 1532 const CPDF_ImageObject* pImage, | |
| 1533 CPDF_PageRenderCache* pCache, | |
| 1534 std::unique_ptr<CPDF_ImageLoaderHandle>* pLoadHandle, | |
| 1535 FX_BOOL bStdCS, | |
| 1536 uint32_t GroupFamily, | |
| 1537 FX_BOOL bLoadMask, | |
| 1538 CPDF_RenderStatus* pRenderStatus, | |
| 1539 int32_t nDownsampleWidth, | |
| 1540 int32_t nDownsampleHeight) { | |
| 1541 m_nDownsampleWidth = nDownsampleWidth; | |
| 1542 m_nDownsampleHeight = nDownsampleHeight; | |
| 1543 pLoadHandle->reset(new CPDF_ImageLoaderHandle); | |
| 1544 return (*pLoadHandle) | |
| 1545 ->Start(this, pImage, pCache, bStdCS, GroupFamily, bLoadMask, | |
| 1546 pRenderStatus, m_nDownsampleWidth, m_nDownsampleHeight); | |
| 1547 } | |
| 1548 | |
| 1549 FX_BOOL CPDF_ImageLoader::Continue(CPDF_ImageLoaderHandle* LoadHandle, | |
| 1550 IFX_Pause* pPause) { | |
| 1551 return LoadHandle->Continue(pPause); | |
| 1552 } | |
| 1553 | |
| 1554 CPDF_ImageLoader::~CPDF_ImageLoader() { | |
| 1555 if (!m_bCached) { | |
| 1556 delete m_pBitmap; | |
| 1557 delete m_pMask; | |
| 1558 } | |
| 1559 } | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 2393593002:
Move core/fpdfapi/fpdf_render to core/fpdfapi/render (Closed)
