| // Copyright 2014 PDFium Authors. All rights reserved. | |
| // Use of this source code is governed by a BSD-style license that can be | |
| // found in the LICENSE file. | |
| // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com | |
| #include "core/fpdfapi/fpdf_render/render_int.h" | |
| #include <algorithm> | |
| #include <memory> | |
| #include <vector> | |
| #include "core/fpdfapi/cpdf_modulemgr.h" | |
| #include "core/fpdfapi/fpdf_page/cpdf_image.h" | |
| #include "core/fpdfapi/fpdf_page/cpdf_imageobject.h" | |
| #include "core/fpdfapi/fpdf_page/pageint.h" | |
| #include "core/fpdfapi/fpdf_parser/cpdf_array.h" | |
| #include "core/fpdfapi/fpdf_parser/cpdf_dictionary.h" | |
| #include "core/fpdfapi/fpdf_parser/cpdf_document.h" | |
| #include "core/fpdfapi/fpdf_render/cpdf_pagerendercache.h" | |
| #include "core/fxcodec/fx_codec.h" | |
| #include "core/fxcrt/fx_safe_types.h" | |
| namespace { | |
| unsigned int GetBits8(const uint8_t* pData, uint64_t bitpos, size_t nbits) { | |
| ASSERT(nbits == 1 || nbits == 2 || nbits == 4 || nbits == 8 || nbits == 16); | |
| ASSERT((bitpos & (nbits - 1)) == 0); | |
| unsigned int byte = pData[bitpos / 8]; | |
| if (nbits == 8) | |
| return byte; | |
| if (nbits == 16) | |
| return byte * 256 + pData[bitpos / 8 + 1]; | |
| return (byte >> (8 - nbits - (bitpos % 8))) & ((1 << nbits) - 1); | |
| } | |
| FX_SAFE_UINT32 CalculatePitch8(uint32_t bpc, uint32_t components, int width) { | |
| FX_SAFE_UINT32 pitch = bpc; | |
| pitch *= components; | |
| pitch *= width; | |
| pitch += 7; | |
| pitch /= 8; | |
| return pitch; | |
| } | |
| FX_SAFE_UINT32 CalculatePitch32(int bpp, int width) { | |
| FX_SAFE_UINT32 pitch = bpp; | |
| pitch *= width; | |
| pitch += 31; | |
| pitch /= 32; // quantized to number of 32-bit words. | |
| pitch *= 4; // and then back to bytes, (not just /8 in one step). | |
| return pitch; | |
| } | |
| bool IsAllowedBPCValue(int bpc) { | |
| return bpc == 1 || bpc == 2 || bpc == 4 || bpc == 8 || bpc == 16; | |
| } | |
| template <typename T> | |
| T ClampValue(T value, T max_value) { | |
| value = std::min(value, max_value); | |
| value = std::max<T>(0, value); | |
| return value; | |
| } | |
| // Wrapper class to use with std::unique_ptr for CJPX_Decoder. | |
| class JpxBitMapContext { | |
| public: | |
| explicit JpxBitMapContext(CCodec_JpxModule* jpx_module) | |
| : jpx_module_(jpx_module), decoder_(nullptr) {} | |
| ~JpxBitMapContext() { jpx_module_->DestroyDecoder(decoder_); } | |
| // Takes ownership of |decoder|. | |
| void set_decoder(CJPX_Decoder* decoder) { decoder_ = decoder; } | |
| CJPX_Decoder* decoder() { return decoder_; } | |
| private: | |
| CCodec_JpxModule* const jpx_module_; // Weak pointer. | |
| CJPX_Decoder* decoder_; // Decoder, owned. | |
| // Disallow evil constructors | |
| JpxBitMapContext(const JpxBitMapContext&); | |
| void operator=(const JpxBitMapContext&); | |
| }; | |
| const int kMaxImageDimension = 0x01FFFF; | |
| } // namespace | |
| CPDF_DIBSource::CPDF_DIBSource() | |
| : m_pDocument(nullptr), | |
| m_pStream(nullptr), | |
| m_pDict(nullptr), | |
| m_pColorSpace(nullptr), | |
| m_Family(0), | |
| m_bpc(0), | |
| m_bpc_orig(0), | |
| m_nComponents(0), | |
| m_GroupFamily(0), | |
| m_MatteColor(0), | |
| m_bLoadMask(FALSE), | |
| m_bDefaultDecode(TRUE), | |
| m_bImageMask(FALSE), | |
| m_bDoBpcCheck(TRUE), | |
| m_bColorKey(FALSE), | |
| m_bHasMask(FALSE), | |
| m_bStdCS(FALSE), | |
| m_pCompData(nullptr), | |
| m_pLineBuf(nullptr), | |
| m_pMaskedLine(nullptr), | |
| m_pMask(nullptr), | |
| m_pMaskStream(nullptr), | |
| m_Status(0) {} | |
| CPDF_DIBSource::~CPDF_DIBSource() { | |
| FX_Free(m_pMaskedLine); | |
| FX_Free(m_pLineBuf); | |
| m_pCachedBitmap.reset(); | |
| FX_Free(m_pCompData); | |
| CPDF_ColorSpace* pCS = m_pColorSpace; | |
| if (pCS && m_pDocument) { | |
| m_pDocument->GetPageData()->ReleaseColorSpace(pCS->GetArray()); | |
| } | |
| } | |
| CFX_DIBitmap* CPDF_DIBSource::GetBitmap() const { | |
| return m_pCachedBitmap ? m_pCachedBitmap.get() : Clone(); | |
| } | |
| void CPDF_DIBSource::ReleaseBitmap(CFX_DIBitmap* pBitmap) const { | |
| if (pBitmap && pBitmap != m_pCachedBitmap.get()) { | |
| delete pBitmap; | |
| } | |
| } | |
| FX_BOOL CPDF_DIBSource::Load(CPDF_Document* pDoc, | |
| const CPDF_Stream* pStream, | |
| CPDF_DIBSource** ppMask, | |
| uint32_t* pMatteColor, | |
| CPDF_Dictionary* pFormResources, | |
| CPDF_Dictionary* pPageResources, | |
| FX_BOOL bStdCS, | |
| uint32_t GroupFamily, | |
| FX_BOOL bLoadMask) { | |
| if (!pStream) { | |
| return FALSE; | |
| } | |
| m_pDocument = pDoc; | |
| m_pDict = pStream->GetDict(); | |
| if (!m_pDict) { | |
| return FALSE; | |
| } | |
| m_pStream = pStream; | |
| m_Width = m_pDict->GetIntegerFor("Width"); | |
| m_Height = m_pDict->GetIntegerFor("Height"); | |
| if (m_Width <= 0 || m_Height <= 0 || m_Width > kMaxImageDimension || | |
| m_Height > kMaxImageDimension) { | |
| return FALSE; | |
| } | |
| m_GroupFamily = GroupFamily; | |
| m_bLoadMask = bLoadMask; | |
| if (!LoadColorInfo(m_pStream->GetObjNum() != 0 ? nullptr : pFormResources, | |
| pPageResources)) { | |
| return FALSE; | |
| } | |
| if (m_bDoBpcCheck && (m_bpc == 0 || m_nComponents == 0)) { | |
| return FALSE; | |
| } | |
| FX_SAFE_UINT32 src_size = | |
| CalculatePitch8(m_bpc, m_nComponents, m_Width) * m_Height; | |
| if (!src_size.IsValid()) { | |
| return FALSE; | |
| } | |
| m_pStreamAcc.reset(new CPDF_StreamAcc); | |
| m_pStreamAcc->LoadAllData(pStream, FALSE, src_size.ValueOrDie(), TRUE); | |
| if (m_pStreamAcc->GetSize() == 0 || !m_pStreamAcc->GetData()) { | |
| return FALSE; | |
| } | |
| if (!CreateDecoder()) { | |
| return FALSE; | |
| } | |
| if (m_bImageMask) { | |
| m_bpp = 1; | |
| m_bpc = 1; | |
| m_nComponents = 1; | |
| m_AlphaFlag = 1; | |
| } else if (m_bpc * m_nComponents == 1) { | |
| m_bpp = 1; | |
| } else if (m_bpc * m_nComponents <= 8) { | |
| m_bpp = 8; | |
| } else { | |
| m_bpp = 24; | |
| } | |
| FX_SAFE_UINT32 pitch = CalculatePitch32(m_bpp, m_Width); | |
| if (!pitch.IsValid()) { | |
| return FALSE; | |
| } | |
| m_pLineBuf = FX_Alloc(uint8_t, pitch.ValueOrDie()); | |
| if (m_pColorSpace && bStdCS) { | |
| m_pColorSpace->EnableStdConversion(TRUE); | |
| } | |
| LoadPalette(); | |
| if (m_bColorKey) { | |
| m_bpp = 32; | |
| m_AlphaFlag = 2; | |
| pitch = CalculatePitch32(m_bpp, m_Width); | |
| if (!pitch.IsValid()) { | |
| return FALSE; | |
| } | |
| m_pMaskedLine = FX_Alloc(uint8_t, pitch.ValueOrDie()); | |
| } | |
| m_Pitch = pitch.ValueOrDie(); | |
| if (ppMask) { | |
| *ppMask = LoadMask(*pMatteColor); | |
| } | |
| if (m_pColorSpace && bStdCS) { | |
| m_pColorSpace->EnableStdConversion(FALSE); | |
| } | |
| return TRUE; | |
| } | |
| int CPDF_DIBSource::ContinueToLoadMask() { | |
| if (m_bImageMask) { | |
| m_bpp = 1; | |
| m_bpc = 1; | |
| m_nComponents = 1; | |
| m_AlphaFlag = 1; | |
| } else if (m_bpc * m_nComponents == 1) { | |
| m_bpp = 1; | |
| } else if (m_bpc * m_nComponents <= 8) { | |
| m_bpp = 8; | |
| } else { | |
| m_bpp = 24; | |
| } | |
| if (!m_bpc || !m_nComponents) { | |
| return 0; | |
| } | |
| FX_SAFE_UINT32 pitch = CalculatePitch32(m_bpp, m_Width); | |
| if (!pitch.IsValid()) { | |
| return 0; | |
| } | |
| m_pLineBuf = FX_Alloc(uint8_t, pitch.ValueOrDie()); | |
| if (m_pColorSpace && m_bStdCS) { | |
| m_pColorSpace->EnableStdConversion(TRUE); | |
| } | |
| LoadPalette(); | |
| if (m_bColorKey) { | |
| m_bpp = 32; | |
| m_AlphaFlag = 2; | |
| pitch = CalculatePitch32(m_bpp, m_Width); | |
| if (!pitch.IsValid()) { | |
| return 0; | |
| } | |
| m_pMaskedLine = FX_Alloc(uint8_t, pitch.ValueOrDie()); | |
| } | |
| m_Pitch = pitch.ValueOrDie(); | |
| return 1; | |
| } | |
| int CPDF_DIBSource::StartLoadDIBSource(CPDF_Document* pDoc, | |
| const CPDF_Stream* pStream, | |
| FX_BOOL bHasMask, | |
| CPDF_Dictionary* pFormResources, | |
| CPDF_Dictionary* pPageResources, | |
| FX_BOOL bStdCS, | |
| uint32_t GroupFamily, | |
| FX_BOOL bLoadMask) { | |
| if (!pStream) { | |
| return 0; | |
| } | |
| m_pDocument = pDoc; | |
| m_pDict = pStream->GetDict(); | |
| m_pStream = pStream; | |
| m_bStdCS = bStdCS; | |
| m_bHasMask = bHasMask; | |
| m_Width = m_pDict->GetIntegerFor("Width"); | |
| m_Height = m_pDict->GetIntegerFor("Height"); | |
| if (m_Width <= 0 || m_Height <= 0 || m_Width > kMaxImageDimension || | |
| m_Height > kMaxImageDimension) { | |
| return 0; | |
| } | |
| m_GroupFamily = GroupFamily; | |
| m_bLoadMask = bLoadMask; | |
| if (!LoadColorInfo(m_pStream->GetObjNum() != 0 ? nullptr : pFormResources, | |
| pPageResources)) { | |
| return 0; | |
| } | |
| if (m_bDoBpcCheck && (m_bpc == 0 || m_nComponents == 0)) { | |
| return 0; | |
| } | |
| FX_SAFE_UINT32 src_size = | |
| CalculatePitch8(m_bpc, m_nComponents, m_Width) * m_Height; | |
| if (!src_size.IsValid()) { | |
| return 0; | |
| } | |
| m_pStreamAcc.reset(new CPDF_StreamAcc); | |
| m_pStreamAcc->LoadAllData(pStream, FALSE, src_size.ValueOrDie(), TRUE); | |
| if (m_pStreamAcc->GetSize() == 0 || !m_pStreamAcc->GetData()) { | |
| return 0; | |
| } | |
| int ret = CreateDecoder(); | |
| if (!ret) | |
| return ret; | |
| if (ret != 1) { | |
| if (!ContinueToLoadMask()) { | |
| return 0; | |
| } | |
| if (m_bHasMask) { | |
| StratLoadMask(); | |
| } | |
| return ret; | |
| } | |
| if (!ContinueToLoadMask()) { | |
| return 0; | |
| } | |
| if (m_bHasMask) { | |
| ret = StratLoadMask(); | |
| } | |
| if (ret == 2) { | |
| return ret; | |
| } | |
| if (m_pColorSpace && m_bStdCS) { | |
| m_pColorSpace->EnableStdConversion(FALSE); | |
| } | |
| return ret; | |
| } | |
| int CPDF_DIBSource::ContinueLoadDIBSource(IFX_Pause* pPause) { | |
| FXCODEC_STATUS ret; | |
| if (m_Status == 1) { | |
| const CFX_ByteString& decoder = m_pStreamAcc->GetImageDecoder(); | |
| if (decoder == "JPXDecode") { | |
| return 0; | |
| } | |
| CCodec_Jbig2Module* pJbig2Module = CPDF_ModuleMgr::Get()->GetJbig2Module(); | |
| if (!m_pJbig2Context) { | |
| m_pJbig2Context.reset(new CCodec_Jbig2Context()); | |
| if (m_pStreamAcc->GetImageParam()) { | |
| CPDF_Stream* pGlobals = | |
| m_pStreamAcc->GetImageParam()->GetStreamFor("JBIG2Globals"); | |
| if (pGlobals) { | |
| m_pGlobalStream.reset(new CPDF_StreamAcc); | |
| m_pGlobalStream->LoadAllData(pGlobals, FALSE); | |
| } | |
| } | |
| ret = pJbig2Module->StartDecode( | |
| m_pJbig2Context.get(), m_pDocument->CodecContext(), m_Width, m_Height, | |
| m_pStreamAcc.get(), m_pGlobalStream.get(), | |
| m_pCachedBitmap->GetBuffer(), m_pCachedBitmap->GetPitch(), pPause); | |
| if (ret < 0) { | |
| m_pCachedBitmap.reset(); | |
| m_pGlobalStream.reset(); | |
| m_pJbig2Context.reset(); | |
| return 0; | |
| } | |
| if (ret == FXCODEC_STATUS_DECODE_TOBECONTINUE) { | |
| return 2; | |
| } | |
| int ret1 = 1; | |
| if (m_bHasMask) { | |
| ret1 = ContinueLoadMaskDIB(pPause); | |
| m_Status = 2; | |
| } | |
| if (ret1 == 2) { | |
| return ret1; | |
| } | |
| if (m_pColorSpace && m_bStdCS) { | |
| m_pColorSpace->EnableStdConversion(FALSE); | |
| } | |
| return ret1; | |
| } | |
| ret = pJbig2Module->ContinueDecode(m_pJbig2Context.get(), pPause); | |
| if (ret < 0) { | |
| m_pCachedBitmap.reset(); | |
| m_pGlobalStream.reset(); | |
| m_pJbig2Context.reset(); | |
| return 0; | |
| } | |
| if (ret == FXCODEC_STATUS_DECODE_TOBECONTINUE) { | |
| return 2; | |
| } | |
| int ret1 = 1; | |
| if (m_bHasMask) { | |
| ret1 = ContinueLoadMaskDIB(pPause); | |
| m_Status = 2; | |
| } | |
| if (ret1 == 2) { | |
| return ret1; | |
| } | |
| if (m_pColorSpace && m_bStdCS) { | |
| m_pColorSpace->EnableStdConversion(FALSE); | |
| } | |
| return ret1; | |
| } | |
| if (m_Status == 2) { | |
| return ContinueLoadMaskDIB(pPause); | |
| } | |
| return 0; | |
| } | |
| bool CPDF_DIBSource::LoadColorInfo(const CPDF_Dictionary* pFormResources, | |
| const CPDF_Dictionary* pPageResources) { | |
| m_bpc_orig = m_pDict->GetIntegerFor("BitsPerComponent"); | |
| if (m_pDict->GetIntegerFor("ImageMask")) | |
| m_bImageMask = TRUE; | |
| if (m_bImageMask || !m_pDict->KeyExist("ColorSpace")) { | |
| if (!m_bImageMask) { | |
| CPDF_Object* pFilter = m_pDict->GetDirectObjectFor("Filter"); | |
| if (pFilter) { | |
| CFX_ByteString filter; | |
| if (pFilter->IsName()) { | |
| filter = pFilter->GetString(); | |
| } else if (CPDF_Array* pArray = pFilter->AsArray()) { | |
| filter = pArray->GetStringAt(pArray->GetCount() - 1); | |
| } | |
| if (filter == "JPXDecode") { | |
| m_bDoBpcCheck = FALSE; | |
| return true; | |
| } | |
| } | |
| } | |
| m_bImageMask = TRUE; | |
| m_bpc = m_nComponents = 1; | |
| CPDF_Array* pDecode = m_pDict->GetArrayFor("Decode"); | |
| m_bDefaultDecode = !pDecode || !pDecode->GetIntegerAt(0); | |
| return true; | |
| } | |
| CPDF_Object* pCSObj = m_pDict->GetDirectObjectFor("ColorSpace"); | |
| if (!pCSObj) | |
| return false; | |
| CPDF_DocPageData* pDocPageData = m_pDocument->GetPageData(); | |
| if (pFormResources) | |
| m_pColorSpace = pDocPageData->GetColorSpace(pCSObj, pFormResources); | |
| if (!m_pColorSpace) | |
| m_pColorSpace = pDocPageData->GetColorSpace(pCSObj, pPageResources); | |
| if (!m_pColorSpace) | |
| return false; | |
| m_Family = m_pColorSpace->GetFamily(); | |
| m_nComponents = m_pColorSpace->CountComponents(); | |
| if (m_Family == PDFCS_ICCBASED && pCSObj->IsName()) { | |
| CFX_ByteString cs = pCSObj->GetString(); | |
| if (cs == "DeviceGray") { | |
| m_nComponents = 1; | |
| } else if (cs == "DeviceRGB") { | |
| m_nComponents = 3; | |
| } else if (cs == "DeviceCMYK") { | |
| m_nComponents = 4; | |
| } | |
| } | |
| ValidateDictParam(); | |
| m_pCompData = GetDecodeAndMaskArray(m_bDefaultDecode, m_bColorKey); | |
| return !!m_pCompData; | |
| } | |
| DIB_COMP_DATA* CPDF_DIBSource::GetDecodeAndMaskArray(FX_BOOL& bDefaultDecode, | |
| FX_BOOL& bColorKey) { | |
| if (!m_pColorSpace) { | |
| return nullptr; | |
| } | |
| DIB_COMP_DATA* pCompData = FX_Alloc(DIB_COMP_DATA, m_nComponents); | |
| int max_data = (1 << m_bpc) - 1; | |
| CPDF_Array* pDecode = m_pDict->GetArrayFor("Decode"); | |
| if (pDecode) { | |
| for (uint32_t i = 0; i < m_nComponents; i++) { | |
| pCompData[i].m_DecodeMin = pDecode->GetNumberAt(i * 2); | |
| FX_FLOAT max = pDecode->GetNumberAt(i * 2 + 1); | |
| pCompData[i].m_DecodeStep = (max - pCompData[i].m_DecodeMin) / max_data; | |
| FX_FLOAT def_value; | |
| FX_FLOAT def_min; | |
| FX_FLOAT def_max; | |
| m_pColorSpace->GetDefaultValue(i, def_value, def_min, def_max); | |
| if (m_Family == PDFCS_INDEXED) { | |
| def_max = max_data; | |
| } | |
| if (def_min != pCompData[i].m_DecodeMin || def_max != max) { | |
| bDefaultDecode = FALSE; | |
| } | |
| } | |
| } else { | |
| for (uint32_t i = 0; i < m_nComponents; i++) { | |
| FX_FLOAT def_value; | |
| m_pColorSpace->GetDefaultValue(i, def_value, pCompData[i].m_DecodeMin, | |
| pCompData[i].m_DecodeStep); | |
| if (m_Family == PDFCS_INDEXED) { | |
| pCompData[i].m_DecodeStep = max_data; | |
| } | |
| pCompData[i].m_DecodeStep = | |
| (pCompData[i].m_DecodeStep - pCompData[i].m_DecodeMin) / max_data; | |
| } | |
| } | |
| if (!m_pDict->KeyExist("SMask")) { | |
| CPDF_Object* pMask = m_pDict->GetDirectObjectFor("Mask"); | |
| if (!pMask) { | |
| return pCompData; | |
| } | |
| if (CPDF_Array* pArray = pMask->AsArray()) { | |
| if (pArray->GetCount() >= m_nComponents * 2) { | |
| for (uint32_t i = 0; i < m_nComponents; i++) { | |
| int min_num = pArray->GetIntegerAt(i * 2); | |
| int max_num = pArray->GetIntegerAt(i * 2 + 1); | |
| pCompData[i].m_ColorKeyMin = std::max(min_num, 0); | |
| pCompData[i].m_ColorKeyMax = std::min(max_num, max_data); | |
| } | |
| } | |
| bColorKey = TRUE; | |
| } | |
| } | |
| return pCompData; | |
| } | |
| CCodec_ScanlineDecoder* FPDFAPI_CreateFaxDecoder( | |
| const uint8_t* src_buf, | |
| uint32_t src_size, | |
| int width, | |
| int height, | |
| const CPDF_Dictionary* pParams); | |
| CCodec_ScanlineDecoder* FPDFAPI_CreateFlateDecoder( | |
| const uint8_t* src_buf, | |
| uint32_t src_size, | |
| int width, | |
| int height, | |
| int nComps, | |
| int bpc, | |
| const CPDF_Dictionary* pParams); | |
| int CPDF_DIBSource::CreateDecoder() { | |
| const CFX_ByteString& decoder = m_pStreamAcc->GetImageDecoder(); | |
| if (decoder.IsEmpty()) { | |
| return 1; | |
| } | |
| if (m_bDoBpcCheck && m_bpc == 0) { | |
| return 0; | |
| } | |
| const uint8_t* src_data = m_pStreamAcc->GetData(); | |
| uint32_t src_size = m_pStreamAcc->GetSize(); | |
| const CPDF_Dictionary* pParams = m_pStreamAcc->GetImageParam(); | |
| if (decoder == "CCITTFaxDecode") { | |
| m_pDecoder.reset(FPDFAPI_CreateFaxDecoder(src_data, src_size, m_Width, | |
| m_Height, pParams)); | |
| } else if (decoder == "DCTDecode") { | |
| m_pDecoder.reset(CPDF_ModuleMgr::Get()->GetJpegModule()->CreateDecoder( | |
| src_data, src_size, m_Width, m_Height, m_nComponents, | |
| pParams ? pParams->GetIntegerFor("ColorTransform", 1) : 1)); | |
| if (!m_pDecoder) { | |
| bool bTransform = false; | |
| int comps; | |
| int bpc; | |
| CCodec_JpegModule* pJpegModule = CPDF_ModuleMgr::Get()->GetJpegModule(); | |
| if (pJpegModule->LoadInfo(src_data, src_size, &m_Width, &m_Height, &comps, | |
| &bpc, &bTransform)) { | |
| if (m_nComponents != static_cast<uint32_t>(comps)) { | |
| FX_Free(m_pCompData); | |
| m_pCompData = nullptr; | |
| m_nComponents = static_cast<uint32_t>(comps); | |
| if (m_pColorSpace && | |
| m_pColorSpace->CountComponents() != m_nComponents) { | |
| return 0; | |
| } | |
| if (m_Family == PDFCS_LAB && m_nComponents != 3) | |
| return 0; | |
| m_pCompData = GetDecodeAndMaskArray(m_bDefaultDecode, m_bColorKey); | |
| if (!m_pCompData) | |
| return 0; | |
| } | |
| m_bpc = bpc; | |
| m_pDecoder.reset(CPDF_ModuleMgr::Get()->GetJpegModule()->CreateDecoder( | |
| src_data, src_size, m_Width, m_Height, m_nComponents, bTransform)); | |
| } | |
| } | |
| } else if (decoder == "FlateDecode") { | |
| m_pDecoder.reset(FPDFAPI_CreateFlateDecoder( | |
| src_data, src_size, m_Width, m_Height, m_nComponents, m_bpc, pParams)); | |
| } else if (decoder == "JPXDecode") { | |
| LoadJpxBitmap(); | |
| return m_pCachedBitmap ? 1 : 0; | |
| } else if (decoder == "JBIG2Decode") { | |
| m_pCachedBitmap.reset(new CFX_DIBitmap); | |
| if (!m_pCachedBitmap->Create( | |
| m_Width, m_Height, m_bImageMask ? FXDIB_1bppMask : FXDIB_1bppRgb)) { | |
| m_pCachedBitmap.reset(); | |
| return 0; | |
| } | |
| m_Status = 1; | |
| return 2; | |
| } else if (decoder == "RunLengthDecode") { | |
| m_pDecoder.reset(CPDF_ModuleMgr::Get() | |
| ->GetCodecModule() | |
| ->GetBasicModule() | |
| ->CreateRunLengthDecoder(src_data, src_size, m_Width, | |
| m_Height, m_nComponents, | |
| m_bpc)); | |
| } | |
| if (!m_pDecoder) | |
| return 0; | |
| FX_SAFE_UINT32 requested_pitch = | |
| CalculatePitch8(m_bpc, m_nComponents, m_Width); | |
| if (!requested_pitch.IsValid()) | |
| return 0; | |
| FX_SAFE_UINT32 provided_pitch = CalculatePitch8( | |
| m_pDecoder->GetBPC(), m_pDecoder->CountComps(), m_pDecoder->GetWidth()); | |
| if (!provided_pitch.IsValid()) | |
| return 0; | |
| if (provided_pitch.ValueOrDie() < requested_pitch.ValueOrDie()) | |
| return 0; | |
| return 1; | |
| } | |
| void CPDF_DIBSource::LoadJpxBitmap() { | |
| CCodec_JpxModule* pJpxModule = CPDF_ModuleMgr::Get()->GetJpxModule(); | |
| if (!pJpxModule) | |
| return; | |
| std::unique_ptr<JpxBitMapContext> context(new JpxBitMapContext(pJpxModule)); | |
| context->set_decoder(pJpxModule->CreateDecoder( | |
| m_pStreamAcc->GetData(), m_pStreamAcc->GetSize(), m_pColorSpace)); | |
| if (!context->decoder()) | |
| return; | |
| uint32_t width = 0; | |
| uint32_t height = 0; | |
| uint32_t components = 0; | |
| pJpxModule->GetImageInfo(context->decoder(), &width, &height, &components); | |
| if (static_cast<int>(width) < m_Width || static_cast<int>(height) < m_Height) | |
| return; | |
| FX_BOOL bSwapRGB = FALSE; | |
| if (m_pColorSpace) { | |
| if (components != m_pColorSpace->CountComponents()) | |
| return; | |
| if (m_pColorSpace == CPDF_ColorSpace::GetStockCS(PDFCS_DEVICERGB)) { | |
| bSwapRGB = TRUE; | |
| m_pColorSpace = nullptr; | |
| } | |
| } else { | |
| if (components == 3) { | |
| bSwapRGB = TRUE; | |
| } else if (components == 4) { | |
| m_pColorSpace = CPDF_ColorSpace::GetStockCS(PDFCS_DEVICECMYK); | |
| } | |
| m_nComponents = components; | |
| } | |
| FXDIB_Format format; | |
| if (components == 1) { | |
| format = FXDIB_8bppRgb; | |
| } else if (components <= 3) { | |
| format = FXDIB_Rgb; | |
| } else if (components == 4) { | |
| format = FXDIB_Rgb32; | |
| } else { | |
| width = (width * components + 2) / 3; | |
| format = FXDIB_Rgb; | |
| } | |
| m_pCachedBitmap.reset(new CFX_DIBitmap); | |
| if (!m_pCachedBitmap->Create(width, height, format)) { | |
| m_pCachedBitmap.reset(); | |
| return; | |
| } | |
| m_pCachedBitmap->Clear(0xFFFFFFFF); | |
| std::vector<uint8_t> output_offsets(components); | |
| for (uint32_t i = 0; i < components; ++i) | |
| output_offsets[i] = i; | |
| if (bSwapRGB) { | |
| output_offsets[0] = 2; | |
| output_offsets[2] = 0; | |
| } | |
| if (!pJpxModule->Decode(context->decoder(), m_pCachedBitmap->GetBuffer(), | |
| m_pCachedBitmap->GetPitch(), output_offsets)) { | |
| m_pCachedBitmap.reset(); | |
| return; | |
| } | |
| if (m_pColorSpace && m_pColorSpace->GetFamily() == PDFCS_INDEXED && | |
| m_bpc < 8) { | |
| int scale = 8 - m_bpc; | |
| for (uint32_t row = 0; row < height; ++row) { | |
| uint8_t* scanline = | |
| const_cast<uint8_t*>(m_pCachedBitmap->GetScanline(row)); | |
| for (uint32_t col = 0; col < width; ++col) { | |
| *scanline = (*scanline) >> scale; | |
| ++scanline; | |
| } | |
| } | |
| } | |
| m_bpc = 8; | |
| } | |
| CPDF_DIBSource* CPDF_DIBSource::LoadMask(uint32_t& MatteColor) { | |
| MatteColor = 0xFFFFFFFF; | |
| CPDF_Stream* pSoftMask = m_pDict->GetStreamFor("SMask"); | |
| if (pSoftMask) { | |
| CPDF_Array* pMatte = pSoftMask->GetDict()->GetArrayFor("Matte"); | |
| if (pMatte && m_pColorSpace && | |
| m_pColorSpace->CountComponents() <= m_nComponents) { | |
| std::vector<FX_FLOAT> colors(m_nComponents); | |
| for (uint32_t i = 0; i < m_nComponents; i++) { | |
| colors[i] = pMatte->GetFloatAt(i); | |
| } | |
| FX_FLOAT R, G, B; | |
| m_pColorSpace->GetRGB(colors.data(), R, G, B); | |
| MatteColor = FXARGB_MAKE(0, FXSYS_round(R * 255), FXSYS_round(G * 255), | |
| FXSYS_round(B * 255)); | |
| } | |
| return LoadMaskDIB(pSoftMask); | |
| } | |
| if (CPDF_Stream* pStream = ToStream(m_pDict->GetDirectObjectFor("Mask"))) | |
| return LoadMaskDIB(pStream); | |
| return nullptr; | |
| } | |
| int CPDF_DIBSource::StratLoadMask() { | |
| m_MatteColor = 0XFFFFFFFF; | |
| m_pMaskStream = m_pDict->GetStreamFor("SMask"); | |
| if (m_pMaskStream) { | |
| CPDF_Array* pMatte = m_pMaskStream->GetDict()->GetArrayFor("Matte"); | |
| if (pMatte && m_pColorSpace && | |
| m_pColorSpace->CountComponents() <= m_nComponents) { | |
| FX_FLOAT R, G, B; | |
| std::vector<FX_FLOAT> colors(m_nComponents); | |
| for (uint32_t i = 0; i < m_nComponents; i++) { | |
| colors[i] = pMatte->GetFloatAt(i); | |
| } | |
| m_pColorSpace->GetRGB(colors.data(), R, G, B); | |
| m_MatteColor = FXARGB_MAKE(0, FXSYS_round(R * 255), FXSYS_round(G * 255), | |
| FXSYS_round(B * 255)); | |
| } | |
| return StartLoadMaskDIB(); | |
| } | |
| m_pMaskStream = ToStream(m_pDict->GetDirectObjectFor("Mask")); | |
| return m_pMaskStream ? StartLoadMaskDIB() : 1; | |
| } | |
| int CPDF_DIBSource::ContinueLoadMaskDIB(IFX_Pause* pPause) { | |
| if (!m_pMask) { | |
| return 1; | |
| } | |
| int ret = m_pMask->ContinueLoadDIBSource(pPause); | |
| if (ret == 2) { | |
| return ret; | |
| } | |
| if (m_pColorSpace && m_bStdCS) { | |
| m_pColorSpace->EnableStdConversion(FALSE); | |
| } | |
| if (!ret) { | |
| delete m_pMask; | |
| m_pMask = nullptr; | |
| return ret; | |
| } | |
| return 1; | |
| } | |
| CPDF_DIBSource* CPDF_DIBSource::DetachMask() { | |
| CPDF_DIBSource* pDIBSource = m_pMask; | |
| m_pMask = nullptr; | |
| return pDIBSource; | |
| } | |
| CPDF_DIBSource* CPDF_DIBSource::LoadMaskDIB(CPDF_Stream* pMask) { | |
| CPDF_DIBSource* pMaskSource = new CPDF_DIBSource; | |
| if (!pMaskSource->Load(m_pDocument, pMask, nullptr, nullptr, nullptr, nullptr, | |
| TRUE)) { | |
| delete pMaskSource; | |
| return nullptr; | |
| } | |
| return pMaskSource; | |
| } | |
| int CPDF_DIBSource::StartLoadMaskDIB() { | |
| m_pMask = new CPDF_DIBSource; | |
| int ret = m_pMask->StartLoadDIBSource(m_pDocument, m_pMaskStream, FALSE, | |
| nullptr, nullptr, TRUE); | |
| if (ret == 2) { | |
| if (m_Status == 0) | |
| m_Status = 2; | |
| return 2; | |
| } | |
| if (!ret) { | |
| delete m_pMask; | |
| m_pMask = nullptr; | |
| return 1; | |
| } | |
| return 1; | |
| } | |
| void CPDF_DIBSource::LoadPalette() { | |
| if (m_bpc == 0) { | |
| return; | |
| } | |
| if (m_bpc * m_nComponents > 8) { | |
| return; | |
| } | |
| if (!m_pColorSpace) { | |
| return; | |
| } | |
| if (m_bpc * m_nComponents == 1) { | |
| if (m_bDefaultDecode && | |
| (m_Family == PDFCS_DEVICEGRAY || m_Family == PDFCS_DEVICERGB)) { | |
| return; | |
| } | |
| if (m_pColorSpace->CountComponents() > 3) { | |
| return; | |
| } | |
| FX_FLOAT color_values[3]; | |
| color_values[0] = m_pCompData[0].m_DecodeMin; | |
| color_values[1] = color_values[2] = color_values[0]; | |
| FX_FLOAT R = 0.0f, G = 0.0f, B = 0.0f; | |
| m_pColorSpace->GetRGB(color_values, R, G, B); | |
| FX_ARGB argb0 = ArgbEncode(255, FXSYS_round(R * 255), FXSYS_round(G * 255), | |
| FXSYS_round(B * 255)); | |
| color_values[0] += m_pCompData[0].m_DecodeStep; | |
| color_values[1] += m_pCompData[0].m_DecodeStep; | |
| color_values[2] += m_pCompData[0].m_DecodeStep; | |
| m_pColorSpace->GetRGB(color_values, R, G, B); | |
| FX_ARGB argb1 = ArgbEncode(255, FXSYS_round(R * 255), FXSYS_round(G * 255), | |
| FXSYS_round(B * 255)); | |
| if (argb0 != 0xFF000000 || argb1 != 0xFFFFFFFF) { | |
| SetPaletteArgb(0, argb0); | |
| SetPaletteArgb(1, argb1); | |
| } | |
| return; | |
| } | |
| if (m_pColorSpace == CPDF_ColorSpace::GetStockCS(PDFCS_DEVICEGRAY) && | |
| m_bpc == 8 && m_bDefaultDecode) { | |
| } else { | |
| int palette_count = 1 << (m_bpc * m_nComponents); | |
| CFX_FixedBufGrow<FX_FLOAT, 16> color_values(m_nComponents); | |
| FX_FLOAT* color_value = color_values; | |
| for (int i = 0; i < palette_count; i++) { | |
| int color_data = i; | |
| for (uint32_t j = 0; j < m_nComponents; j++) { | |
| int encoded_component = color_data % (1 << m_bpc); | |
| color_data /= 1 << m_bpc; | |
| color_value[j] = m_pCompData[j].m_DecodeMin + | |
| m_pCompData[j].m_DecodeStep * encoded_component; | |
| } | |
| FX_FLOAT R = 0, G = 0, B = 0; | |
| if (m_nComponents == 1 && m_Family == PDFCS_ICCBASED && | |
| m_pColorSpace->CountComponents() > 1) { | |
| int nComponents = m_pColorSpace->CountComponents(); | |
| std::vector<FX_FLOAT> temp_buf(nComponents); | |
| for (int k = 0; k < nComponents; k++) { | |
| temp_buf[k] = *color_value; | |
| } | |
| m_pColorSpace->GetRGB(temp_buf.data(), R, G, B); | |
| } else { | |
| m_pColorSpace->GetRGB(color_value, R, G, B); | |
| } | |
| SetPaletteArgb(i, ArgbEncode(255, FXSYS_round(R * 255), | |
| FXSYS_round(G * 255), FXSYS_round(B * 255))); | |
| } | |
| } | |
| } | |
| void CPDF_DIBSource::ValidateDictParam() { | |
| m_bpc = m_bpc_orig; | |
| CPDF_Object* pFilter = m_pDict->GetDirectObjectFor("Filter"); | |
| if (pFilter) { | |
| if (pFilter->IsName()) { | |
| CFX_ByteString filter = pFilter->GetString(); | |
| if (filter == "CCITTFaxDecode" || filter == "JBIG2Decode") { | |
| m_bpc = 1; | |
| m_nComponents = 1; | |
| } else if (filter == "RunLengthDecode") { | |
| if (m_bpc != 1) { | |
| m_bpc = 8; | |
| } | |
| } else if (filter == "DCTDecode") { | |
| m_bpc = 8; | |
| } | |
| } else if (CPDF_Array* pArray = pFilter->AsArray()) { | |
| CFX_ByteString filter = pArray->GetStringAt(pArray->GetCount() - 1); | |
| if (filter == "CCITTFaxDecode" || filter == "JBIG2Decode") { | |
| m_bpc = 1; | |
| m_nComponents = 1; | |
| } else if (filter == "DCTDecode") { | |
| // Previously, filter == "RunLengthDecode" was checked in the "if" | |
| // statement as well, but too many documents don't conform to it. | |
| m_bpc = 8; | |
| } | |
| } | |
| } | |
| if (!IsAllowedBPCValue(m_bpc)) | |
| m_bpc = 0; | |
| } | |
| void CPDF_DIBSource::TranslateScanline24bpp(uint8_t* dest_scan, | |
| const uint8_t* src_scan) const { | |
| if (m_bpc == 0) { | |
| return; | |
| } | |
| unsigned int max_data = (1 << m_bpc) - 1; | |
| if (m_bDefaultDecode) { | |
| if (m_Family == PDFCS_DEVICERGB || m_Family == PDFCS_CALRGB) { | |
| if (m_nComponents != 3) | |
| return; | |
| const uint8_t* src_pos = src_scan; | |
| switch (m_bpc) { | |
| case 16: | |
| for (int col = 0; col < m_Width; col++) { | |
| *dest_scan++ = src_pos[4]; | |
| *dest_scan++ = src_pos[2]; | |
| *dest_scan++ = *src_pos; | |
| src_pos += 6; | |
| } | |
| break; | |
| case 8: | |
| for (int column = 0; column < m_Width; column++) { | |
| *dest_scan++ = src_pos[2]; | |
| *dest_scan++ = src_pos[1]; | |
| *dest_scan++ = *src_pos; | |
| src_pos += 3; | |
| } | |
| break; | |
| default: | |
| uint64_t src_bit_pos = 0; | |
| size_t dest_byte_pos = 0; | |
| for (int column = 0; column < m_Width; column++) { | |
| unsigned int R = GetBits8(src_scan, src_bit_pos, m_bpc); | |
| src_bit_pos += m_bpc; | |
| unsigned int G = GetBits8(src_scan, src_bit_pos, m_bpc); | |
| src_bit_pos += m_bpc; | |
| unsigned int B = GetBits8(src_scan, src_bit_pos, m_bpc); | |
| src_bit_pos += m_bpc; | |
| R = std::min(R, max_data); | |
| G = std::min(G, max_data); | |
| B = std::min(B, max_data); | |
| dest_scan[dest_byte_pos] = B * 255 / max_data; | |
| dest_scan[dest_byte_pos + 1] = G * 255 / max_data; | |
| dest_scan[dest_byte_pos + 2] = R * 255 / max_data; | |
| dest_byte_pos += 3; | |
| } | |
| break; | |
| } | |
| return; | |
| } | |
| if (m_bpc == 8) { | |
| if (m_nComponents == m_pColorSpace->CountComponents()) | |
| m_pColorSpace->TranslateImageLine(dest_scan, src_scan, m_Width, m_Width, | |
| m_Height, TransMask()); | |
| return; | |
| } | |
| } | |
| CFX_FixedBufGrow<FX_FLOAT, 16> color_values1(m_nComponents); | |
| FX_FLOAT* color_values = color_values1; | |
| FX_FLOAT R = 0.0f, G = 0.0f, B = 0.0f; | |
| if (m_bpc == 8) { | |
| uint64_t src_byte_pos = 0; | |
| size_t dest_byte_pos = 0; | |
| for (int column = 0; column < m_Width; column++) { | |
| for (uint32_t color = 0; color < m_nComponents; color++) { | |
| uint8_t data = src_scan[src_byte_pos++]; | |
| color_values[color] = m_pCompData[color].m_DecodeMin + | |
| m_pCompData[color].m_DecodeStep * data; | |
| } | |
| if (TransMask()) { | |
| FX_FLOAT k = 1.0f - color_values[3]; | |
| R = (1.0f - color_values[0]) * k; | |
| G = (1.0f - color_values[1]) * k; | |
| B = (1.0f - color_values[2]) * k; | |
| } else { | |
| m_pColorSpace->GetRGB(color_values, R, G, B); | |
| } | |
| R = ClampValue(R, 1.0f); | |
| G = ClampValue(G, 1.0f); | |
| B = ClampValue(B, 1.0f); | |
| dest_scan[dest_byte_pos] = static_cast<uint8_t>(B * 255); | |
| dest_scan[dest_byte_pos + 1] = static_cast<uint8_t>(G * 255); | |
| dest_scan[dest_byte_pos + 2] = static_cast<uint8_t>(R * 255); | |
| dest_byte_pos += 3; | |
| } | |
| } else { | |
| uint64_t src_bit_pos = 0; | |
| size_t dest_byte_pos = 0; | |
| for (int column = 0; column < m_Width; column++) { | |
| for (uint32_t color = 0; color < m_nComponents; color++) { | |
| unsigned int data = GetBits8(src_scan, src_bit_pos, m_bpc); | |
| color_values[color] = m_pCompData[color].m_DecodeMin + | |
| m_pCompData[color].m_DecodeStep * data; | |
| src_bit_pos += m_bpc; | |
| } | |
| if (TransMask()) { | |
| FX_FLOAT k = 1.0f - color_values[3]; | |
| R = (1.0f - color_values[0]) * k; | |
| G = (1.0f - color_values[1]) * k; | |
| B = (1.0f - color_values[2]) * k; | |
| } else { | |
| m_pColorSpace->GetRGB(color_values, R, G, B); | |
| } | |
| R = ClampValue(R, 1.0f); | |
| G = ClampValue(G, 1.0f); | |
| B = ClampValue(B, 1.0f); | |
| dest_scan[dest_byte_pos] = static_cast<uint8_t>(B * 255); | |
| dest_scan[dest_byte_pos + 1] = static_cast<uint8_t>(G * 255); | |
| dest_scan[dest_byte_pos + 2] = static_cast<uint8_t>(R * 255); | |
| dest_byte_pos += 3; | |
| } | |
| } | |
| } | |
| uint8_t* CPDF_DIBSource::GetBuffer() const { | |
| return m_pCachedBitmap ? m_pCachedBitmap->GetBuffer() : nullptr; | |
| } | |
| const uint8_t* CPDF_DIBSource::GetScanline(int line) const { | |
| if (m_bpc == 0) { | |
| return nullptr; | |
| } | |
| FX_SAFE_UINT32 src_pitch = CalculatePitch8(m_bpc, m_nComponents, m_Width); | |
| if (!src_pitch.IsValid()) | |
| return nullptr; | |
| uint32_t src_pitch_value = src_pitch.ValueOrDie(); | |
| const uint8_t* pSrcLine = nullptr; | |
| if (m_pCachedBitmap && src_pitch_value <= m_pCachedBitmap->GetPitch()) { | |
| if (line >= m_pCachedBitmap->GetHeight()) { | |
| line = m_pCachedBitmap->GetHeight() - 1; | |
| } | |
| pSrcLine = m_pCachedBitmap->GetScanline(line); | |
| } else if (m_pDecoder) { | |
| pSrcLine = m_pDecoder->GetScanline(line); | |
| } else { | |
| if (m_pStreamAcc->GetSize() >= (line + 1) * src_pitch_value) { | |
| pSrcLine = m_pStreamAcc->GetData() + line * src_pitch_value; | |
| } | |
| } | |
| if (!pSrcLine) { | |
| uint8_t* pLineBuf = m_pMaskedLine ? m_pMaskedLine : m_pLineBuf; | |
| FXSYS_memset(pLineBuf, 0xFF, m_Pitch); | |
| return pLineBuf; | |
| } | |
| if (m_bpc * m_nComponents == 1) { | |
| if (m_bImageMask && m_bDefaultDecode) { | |
| for (uint32_t i = 0; i < src_pitch_value; i++) { | |
| m_pLineBuf[i] = ~pSrcLine[i]; | |
| } | |
| } else if (m_bColorKey) { | |
| uint32_t reset_argb, set_argb; | |
| reset_argb = m_pPalette ? m_pPalette.get()[0] : 0xFF000000; | |
| set_argb = m_pPalette ? m_pPalette.get()[1] : 0xFFFFFFFF; | |
| if (m_pCompData[0].m_ColorKeyMin == 0) { | |
| reset_argb = 0; | |
| } | |
| if (m_pCompData[0].m_ColorKeyMax == 1) { | |
| set_argb = 0; | |
| } | |
| set_argb = FXARGB_TODIB(set_argb); | |
| reset_argb = FXARGB_TODIB(reset_argb); | |
| uint32_t* dest_scan = reinterpret_cast<uint32_t*>(m_pMaskedLine); | |
| for (int col = 0; col < m_Width; col++) { | |
| if (pSrcLine[col / 8] & (1 << (7 - col % 8))) { | |
| *dest_scan = set_argb; | |
| } else { | |
| *dest_scan = reset_argb; | |
| } | |
| dest_scan++; | |
| } | |
| return m_pMaskedLine; | |
| } else { | |
| FXSYS_memcpy(m_pLineBuf, pSrcLine, src_pitch_value); | |
| } | |
| return m_pLineBuf; | |
| } | |
| if (m_bpc * m_nComponents <= 8) { | |
| if (m_bpc == 8) { | |
| FXSYS_memcpy(m_pLineBuf, pSrcLine, src_pitch_value); | |
| } else { | |
| uint64_t src_bit_pos = 0; | |
| for (int col = 0; col < m_Width; col++) { | |
| unsigned int color_index = 0; | |
| for (uint32_t color = 0; color < m_nComponents; color++) { | |
| unsigned int data = GetBits8(pSrcLine, src_bit_pos, m_bpc); | |
| color_index |= data << (color * m_bpc); | |
| src_bit_pos += m_bpc; | |
| } | |
| m_pLineBuf[col] = color_index; | |
| } | |
| } | |
| if (m_bColorKey) { | |
| uint8_t* pDestPixel = m_pMaskedLine; | |
| const uint8_t* pSrcPixel = m_pLineBuf; | |
| for (int col = 0; col < m_Width; col++) { | |
| uint8_t index = *pSrcPixel++; | |
| if (m_pPalette) { | |
| *pDestPixel++ = FXARGB_B(m_pPalette.get()[index]); | |
| *pDestPixel++ = FXARGB_G(m_pPalette.get()[index]); | |
| *pDestPixel++ = FXARGB_R(m_pPalette.get()[index]); | |
| } else { | |
| *pDestPixel++ = index; | |
| *pDestPixel++ = index; | |
| *pDestPixel++ = index; | |
| } | |
| *pDestPixel = (index < m_pCompData[0].m_ColorKeyMin || | |
| index > m_pCompData[0].m_ColorKeyMax) | |
| ? 0xFF | |
| : 0; | |
| pDestPixel++; | |
| } | |
| return m_pMaskedLine; | |
| } | |
| return m_pLineBuf; | |
| } | |
| if (m_bColorKey) { | |
| if (m_nComponents == 3 && m_bpc == 8) { | |
| uint8_t* alpha_channel = m_pMaskedLine + 3; | |
| for (int col = 0; col < m_Width; col++) { | |
| const uint8_t* pPixel = pSrcLine + col * 3; | |
| alpha_channel[col * 4] = (pPixel[0] < m_pCompData[0].m_ColorKeyMin || | |
| pPixel[0] > m_pCompData[0].m_ColorKeyMax || | |
| pPixel[1] < m_pCompData[1].m_ColorKeyMin || | |
| pPixel[1] > m_pCompData[1].m_ColorKeyMax || | |
| pPixel[2] < m_pCompData[2].m_ColorKeyMin || | |
| pPixel[2] > m_pCompData[2].m_ColorKeyMax) | |
| ? 0xFF | |
| : 0; | |
| } | |
| } else { | |
| FXSYS_memset(m_pMaskedLine, 0xFF, m_Pitch); | |
| } | |
| } | |
| if (m_pColorSpace) { | |
| TranslateScanline24bpp(m_pLineBuf, pSrcLine); | |
| pSrcLine = m_pLineBuf; | |
| } | |
| if (m_bColorKey) { | |
| const uint8_t* pSrcPixel = pSrcLine; | |
| uint8_t* pDestPixel = m_pMaskedLine; | |
| for (int col = 0; col < m_Width; col++) { | |
| *pDestPixel++ = *pSrcPixel++; | |
| *pDestPixel++ = *pSrcPixel++; | |
| *pDestPixel++ = *pSrcPixel++; | |
| pDestPixel++; | |
| } | |
| return m_pMaskedLine; | |
| } | |
| return pSrcLine; | |
| } | |
| FX_BOOL CPDF_DIBSource::SkipToScanline(int line, IFX_Pause* pPause) const { | |
| return m_pDecoder && m_pDecoder->SkipToScanline(line, pPause); | |
| } | |
| void CPDF_DIBSource::DownSampleScanline(int line, | |
| uint8_t* dest_scan, | |
| int dest_bpp, | |
| int dest_width, | |
| FX_BOOL bFlipX, | |
| int clip_left, | |
| int clip_width) const { | |
| if (line < 0 || !dest_scan || dest_bpp <= 0 || dest_width <= 0 || | |
| clip_left < 0 || clip_width <= 0) { | |
| return; | |
| } | |
| uint32_t src_width = m_Width; | |
| FX_SAFE_UINT32 pitch = CalculatePitch8(m_bpc, m_nComponents, m_Width); | |
| if (!pitch.IsValid()) | |
| return; | |
| const uint8_t* pSrcLine = nullptr; | |
| if (m_pCachedBitmap) { | |
| pSrcLine = m_pCachedBitmap->GetScanline(line); | |
| } else if (m_pDecoder) { | |
| pSrcLine = m_pDecoder->GetScanline(line); | |
| } else { | |
| uint32_t src_pitch = pitch.ValueOrDie(); | |
| pitch *= (line + 1); | |
| if (!pitch.IsValid()) { | |
| return; | |
| } | |
| if (m_pStreamAcc->GetSize() >= pitch.ValueOrDie()) { | |
| pSrcLine = m_pStreamAcc->GetData() + line * src_pitch; | |
| } | |
| } | |
| int orig_Bpp = m_bpc * m_nComponents / 8; | |
| int dest_Bpp = dest_bpp / 8; | |
| if (!pSrcLine) { | |
| FXSYS_memset(dest_scan, 0xFF, dest_Bpp * clip_width); | |
| return; | |
| } | |
| FX_SAFE_INT32 max_src_x = clip_left; | |
| max_src_x += clip_width - 1; | |
| max_src_x *= src_width; | |
| max_src_x /= dest_width; | |
| if (!max_src_x.IsValid()) | |
| return; | |
| if (m_bpc * m_nComponents == 1) { | |
| DownSampleScanline1Bit(orig_Bpp, dest_Bpp, src_width, pSrcLine, dest_scan, | |
| dest_width, bFlipX, clip_left, clip_width); | |
| } else if (m_bpc * m_nComponents <= 8) { | |
| DownSampleScanline8Bit(orig_Bpp, dest_Bpp, src_width, pSrcLine, dest_scan, | |
| dest_width, bFlipX, clip_left, clip_width); | |
| } else { | |
| DownSampleScanline32Bit(orig_Bpp, dest_Bpp, src_width, pSrcLine, dest_scan, | |
| dest_width, bFlipX, clip_left, clip_width); | |
| } | |
| } | |
| void CPDF_DIBSource::DownSampleScanline1Bit(int orig_Bpp, | |
| int dest_Bpp, | |
| uint32_t src_width, | |
| const uint8_t* pSrcLine, | |
| uint8_t* dest_scan, | |
| int dest_width, | |
| FX_BOOL bFlipX, | |
| int clip_left, | |
| int clip_width) const { | |
| uint32_t set_argb = (uint32_t)-1; | |
| uint32_t reset_argb = 0; | |
| if (m_bImageMask) { | |
| if (m_bDefaultDecode) { | |
| set_argb = 0; | |
| reset_argb = (uint32_t)-1; | |
| } | |
| } else if (m_bColorKey) { | |
| reset_argb = m_pPalette ? m_pPalette.get()[0] : 0xFF000000; | |
| set_argb = m_pPalette ? m_pPalette.get()[1] : 0xFFFFFFFF; | |
| if (m_pCompData[0].m_ColorKeyMin == 0) { | |
| reset_argb = 0; | |
| } | |
| if (m_pCompData[0].m_ColorKeyMax == 1) { | |
| set_argb = 0; | |
| } | |
| set_argb = FXARGB_TODIB(set_argb); | |
| reset_argb = FXARGB_TODIB(reset_argb); | |
| uint32_t* dest_scan_dword = reinterpret_cast<uint32_t*>(dest_scan); | |
| for (int i = 0; i < clip_width; i++) { | |
| uint32_t src_x = (clip_left + i) * src_width / dest_width; | |
| if (bFlipX) { | |
| src_x = src_width - src_x - 1; | |
| } | |
| src_x %= src_width; | |
| if (pSrcLine[src_x / 8] & (1 << (7 - src_x % 8))) { | |
| dest_scan_dword[i] = set_argb; | |
| } else { | |
| dest_scan_dword[i] = reset_argb; | |
| } | |
| } | |
| return; | |
| } else { | |
| if (dest_Bpp == 1) { | |
| } else if (m_pPalette) { | |
| reset_argb = m_pPalette.get()[0]; | |
| set_argb = m_pPalette.get()[1]; | |
| } | |
| } | |
| for (int i = 0; i < clip_width; i++) { | |
| uint32_t src_x = (clip_left + i) * src_width / dest_width; | |
| if (bFlipX) { | |
| src_x = src_width - src_x - 1; | |
| } | |
| src_x %= src_width; | |
| int dest_pos = i * dest_Bpp; | |
| if (pSrcLine[src_x / 8] & (1 << (7 - src_x % 8))) { | |
| if (dest_Bpp == 1) { | |
| dest_scan[dest_pos] = static_cast<uint8_t>(set_argb); | |
| } else if (dest_Bpp == 3) { | |
| dest_scan[dest_pos] = FXARGB_B(set_argb); | |
| dest_scan[dest_pos + 1] = FXARGB_G(set_argb); | |
| dest_scan[dest_pos + 2] = FXARGB_R(set_argb); | |
| } else { | |
| *reinterpret_cast<uint32_t*>(dest_scan + dest_pos) = set_argb; | |
| } | |
| } else { | |
| if (dest_Bpp == 1) { | |
| dest_scan[dest_pos] = static_cast<uint8_t>(reset_argb); | |
| } else if (dest_Bpp == 3) { | |
| dest_scan[dest_pos] = FXARGB_B(reset_argb); | |
| dest_scan[dest_pos + 1] = FXARGB_G(reset_argb); | |
| dest_scan[dest_pos + 2] = FXARGB_R(reset_argb); | |
| } else { | |
| *reinterpret_cast<uint32_t*>(dest_scan + dest_pos) = reset_argb; | |
| } | |
| } | |
| } | |
| } | |
| void CPDF_DIBSource::DownSampleScanline8Bit(int orig_Bpp, | |
| int dest_Bpp, | |
| uint32_t src_width, | |
| const uint8_t* pSrcLine, | |
| uint8_t* dest_scan, | |
| int dest_width, | |
| FX_BOOL bFlipX, | |
| int clip_left, | |
| int clip_width) const { | |
| if (m_bpc < 8) { | |
| uint64_t src_bit_pos = 0; | |
| for (uint32_t col = 0; col < src_width; col++) { | |
| unsigned int color_index = 0; | |
| for (uint32_t color = 0; color < m_nComponents; color++) { | |
| unsigned int data = GetBits8(pSrcLine, src_bit_pos, m_bpc); | |
| color_index |= data << (color * m_bpc); | |
| src_bit_pos += m_bpc; | |
| } | |
| m_pLineBuf[col] = color_index; | |
| } | |
| pSrcLine = m_pLineBuf; | |
| } | |
| if (m_bColorKey) { | |
| for (int i = 0; i < clip_width; i++) { | |
| uint32_t src_x = (clip_left + i) * src_width / dest_width; | |
| if (bFlipX) { | |
| src_x = src_width - src_x - 1; | |
| } | |
| src_x %= src_width; | |
| uint8_t* pDestPixel = dest_scan + i * 4; | |
| uint8_t index = pSrcLine[src_x]; | |
| if (m_pPalette) { | |
| *pDestPixel++ = FXARGB_B(m_pPalette.get()[index]); | |
| *pDestPixel++ = FXARGB_G(m_pPalette.get()[index]); | |
| *pDestPixel++ = FXARGB_R(m_pPalette.get()[index]); | |
| } else { | |
| *pDestPixel++ = index; | |
| *pDestPixel++ = index; | |
| *pDestPixel++ = index; | |
| } | |
| *pDestPixel = (index < m_pCompData[0].m_ColorKeyMin || | |
| index > m_pCompData[0].m_ColorKeyMax) | |
| ? 0xFF | |
| : 0; | |
| } | |
| return; | |
| } | |
| for (int i = 0; i < clip_width; i++) { | |
| uint32_t src_x = (clip_left + i) * src_width / dest_width; | |
| if (bFlipX) { | |
| src_x = src_width - src_x - 1; | |
| } | |
| src_x %= src_width; | |
| uint8_t index = pSrcLine[src_x]; | |
| if (dest_Bpp == 1) { | |
| dest_scan[i] = index; | |
| } else { | |
| int dest_pos = i * dest_Bpp; | |
| FX_ARGB argb = m_pPalette.get()[index]; | |
| dest_scan[dest_pos] = FXARGB_B(argb); | |
| dest_scan[dest_pos + 1] = FXARGB_G(argb); | |
| dest_scan[dest_pos + 2] = FXARGB_R(argb); | |
| } | |
| } | |
| } | |
| void CPDF_DIBSource::DownSampleScanline32Bit(int orig_Bpp, | |
| int dest_Bpp, | |
| uint32_t src_width, | |
| const uint8_t* pSrcLine, | |
| uint8_t* dest_scan, | |
| int dest_width, | |
| FX_BOOL bFlipX, | |
| int clip_left, | |
| int clip_width) const { | |
| // last_src_x used to store the last seen src_x position which should be | |
| // in [0, src_width). Set the initial value to be an invalid src_x value. | |
| uint32_t last_src_x = src_width; | |
| FX_ARGB last_argb = FXARGB_MAKE(0xFF, 0xFF, 0xFF, 0xFF); | |
| FX_FLOAT unit_To8Bpc = 255.0f / ((1 << m_bpc) - 1); | |
| for (int i = 0; i < clip_width; i++) { | |
| int dest_x = clip_left + i; | |
| uint32_t src_x = (bFlipX ? (dest_width - dest_x - 1) : dest_x) * | |
| (int64_t)src_width / dest_width; | |
| src_x %= src_width; | |
| uint8_t* pDestPixel = dest_scan + i * dest_Bpp; | |
| FX_ARGB argb; | |
| if (src_x == last_src_x) { | |
| argb = last_argb; | |
| } else { | |
| CFX_FixedBufGrow<uint8_t, 128> extracted_components(m_nComponents); | |
| const uint8_t* pSrcPixel = nullptr; | |
| if (m_bpc % 8 != 0) { | |
| // No need to check for 32-bit overflow, as |src_x| is bounded by | |
| // |src_width| and DownSampleScanline() already checked for overflow | |
| // with the pitch calculation. | |
| size_t num_bits = src_x * m_bpc * m_nComponents; | |
| uint64_t src_bit_pos = num_bits % 8; | |
| pSrcPixel = pSrcLine + num_bits / 8; | |
| for (uint32_t j = 0; j < m_nComponents; ++j) { | |
| extracted_components[j] = static_cast<uint8_t>( | |
| GetBits8(pSrcPixel, src_bit_pos, m_bpc) * unit_To8Bpc); | |
| src_bit_pos += m_bpc; | |
| } | |
| pSrcPixel = extracted_components; | |
| } else { | |
| pSrcPixel = pSrcLine + src_x * orig_Bpp; | |
| if (m_bpc == 16) { | |
| for (uint32_t j = 0; j < m_nComponents; ++j) | |
| extracted_components[j] = pSrcPixel[j * 2]; | |
| pSrcPixel = extracted_components; | |
| } | |
| } | |
| if (m_pColorSpace) { | |
| uint8_t color[4]; | |
| const FX_BOOL bTransMask = TransMask(); | |
| if (m_bDefaultDecode) { | |
| m_pColorSpace->TranslateImageLine(color, pSrcPixel, 1, 0, 0, | |
| bTransMask); | |
| } else { | |
| for (uint32_t j = 0; j < m_nComponents; ++j) { | |
| FX_FLOAT component_value = | |
| static_cast<FX_FLOAT>(extracted_components[j]); | |
| int color_value = static_cast<int>( | |
| (m_pCompData[j].m_DecodeMin + | |
| m_pCompData[j].m_DecodeStep * component_value) * | |
| 255.0f + | |
| 0.5f); | |
| extracted_components[j] = | |
| color_value > 255 ? 255 : (color_value < 0 ? 0 : color_value); | |
| } | |
| m_pColorSpace->TranslateImageLine(color, extracted_components, 1, 0, | |
| 0, bTransMask); | |
| } | |
| argb = FXARGB_MAKE(0xFF, color[2], color[1], color[0]); | |
| } else { | |
| argb = FXARGB_MAKE(0xFF, pSrcPixel[2], pSrcPixel[1], pSrcPixel[0]); | |
| } | |
| if (m_bColorKey) { | |
| int alpha = 0xFF; | |
| if (m_nComponents == 3 && m_bpc == 8) { | |
| alpha = (pSrcPixel[0] < m_pCompData[0].m_ColorKeyMin || | |
| pSrcPixel[0] > m_pCompData[0].m_ColorKeyMax || | |
| pSrcPixel[1] < m_pCompData[1].m_ColorKeyMin || | |
| pSrcPixel[1] > m_pCompData[1].m_ColorKeyMax || | |
| pSrcPixel[2] < m_pCompData[2].m_ColorKeyMin || | |
| pSrcPixel[2] > m_pCompData[2].m_ColorKeyMax) | |
| ? 0xFF | |
| : 0; | |
| } | |
| argb &= 0xFFFFFF; | |
| argb |= alpha << 24; | |
| } | |
| last_src_x = src_x; | |
| last_argb = argb; | |
| } | |
| if (dest_Bpp == 4) { | |
| *reinterpret_cast<uint32_t*>(pDestPixel) = FXARGB_TODIB(argb); | |
| } else { | |
| *pDestPixel++ = FXARGB_B(argb); | |
| *pDestPixel++ = FXARGB_G(argb); | |
| *pDestPixel = FXARGB_R(argb); | |
| } | |
| } | |
| } | |
| FX_BOOL CPDF_DIBSource::TransMask() const { | |
| return m_bLoadMask && m_GroupFamily == PDFCS_DEVICECMYK && | |
| m_Family == PDFCS_DEVICECMYK; | |
| } | |
| CPDF_ImageLoaderHandle::CPDF_ImageLoaderHandle() { | |
| m_pImageLoader = nullptr; | |
| m_pCache = nullptr; | |
| m_pImage = nullptr; | |
| } | |
| CPDF_ImageLoaderHandle::~CPDF_ImageLoaderHandle() {} | |
| FX_BOOL CPDF_ImageLoaderHandle::Start(CPDF_ImageLoader* pImageLoader, | |
| const CPDF_ImageObject* pImage, | |
| CPDF_PageRenderCache* pCache, | |
| FX_BOOL bStdCS, | |
| uint32_t GroupFamily, | |
| FX_BOOL bLoadMask, | |
| CPDF_RenderStatus* pRenderStatus, | |
| int32_t nDownsampleWidth, | |
| int32_t nDownsampleHeight) { | |
| m_pImageLoader = pImageLoader; | |
| m_pCache = pCache; | |
| m_pImage = const_cast<CPDF_ImageObject*>(pImage); | |
| m_nDownsampleWidth = nDownsampleWidth; | |
| m_nDownsampleHeight = nDownsampleHeight; | |
| FX_BOOL ret; | |
| if (pCache) { | |
| ret = pCache->StartGetCachedBitmap( | |
| m_pImage->GetImage()->GetStream(), bStdCS, GroupFamily, bLoadMask, | |
| pRenderStatus, m_nDownsampleWidth, m_nDownsampleHeight); | |
| } else { | |
| ret = m_pImage->GetImage()->StartLoadDIBSource( | |
| pRenderStatus->m_pFormResource, pRenderStatus->m_pPageResource, bStdCS, | |
| GroupFamily, bLoadMask); | |
| } | |
| if (!ret) | |
| HandleFailure(); | |
| return ret; | |
| } | |
| FX_BOOL CPDF_ImageLoaderHandle::Continue(IFX_Pause* pPause) { | |
| FX_BOOL ret = m_pCache ? m_pCache->Continue(pPause) | |
| : m_pImage->GetImage()->Continue(pPause); | |
| if (!ret) | |
| HandleFailure(); | |
| return ret; | |
| } | |
| void CPDF_ImageLoaderHandle::HandleFailure() { | |
| if (m_pCache) { | |
| CPDF_ImageCacheEntry* entry = m_pCache->GetCurImageCacheEntry(); | |
| m_pImageLoader->m_bCached = TRUE; | |
| m_pImageLoader->m_pBitmap = entry->DetachBitmap(); | |
| m_pImageLoader->m_pMask = entry->DetachMask(); | |
| m_pImageLoader->m_MatteColor = entry->m_MatteColor; | |
| } else { | |
| CPDF_Image* pImage = m_pImage->GetImage(); | |
| m_pImageLoader->m_bCached = FALSE; | |
| m_pImageLoader->m_pBitmap = pImage->DetachBitmap(); | |
| m_pImageLoader->m_pMask = pImage->DetachMask(); | |
| m_pImageLoader->m_MatteColor = pImage->m_MatteColor; | |
| } | |
| } | |
| FX_BOOL CPDF_ImageLoader::Start( | |
| const CPDF_ImageObject* pImage, | |
| CPDF_PageRenderCache* pCache, | |
| std::unique_ptr<CPDF_ImageLoaderHandle>* pLoadHandle, | |
| FX_BOOL bStdCS, | |
| uint32_t GroupFamily, | |
| FX_BOOL bLoadMask, | |
| CPDF_RenderStatus* pRenderStatus, | |
| int32_t nDownsampleWidth, | |
| int32_t nDownsampleHeight) { | |
| m_nDownsampleWidth = nDownsampleWidth; | |
| m_nDownsampleHeight = nDownsampleHeight; | |
| pLoadHandle->reset(new CPDF_ImageLoaderHandle); | |
| return (*pLoadHandle) | |
| ->Start(this, pImage, pCache, bStdCS, GroupFamily, bLoadMask, | |
| pRenderStatus, m_nDownsampleWidth, m_nDownsampleHeight); | |
| } | |
| FX_BOOL CPDF_ImageLoader::Continue(CPDF_ImageLoaderHandle* LoadHandle, | |
| IFX_Pause* pPause) { | |
| return LoadHandle->Continue(pPause); | |
| } | |
| CPDF_ImageLoader::~CPDF_ImageLoader() { | |
| if (!m_bCached) { | |
| delete m_pBitmap; | |
| delete m_pMask; | |
| } | |
| } |