diff options
Diffstat (limited to 'core/src/fpdfapi/fpdf_render/fpdf_render_loadimage.cpp')
| -rw-r--r-- | core/src/fpdfapi/fpdf_render/fpdf_render_loadimage.cpp | 1656 |
1 files changed, 0 insertions, 1656 deletions
diff --git a/core/src/fpdfapi/fpdf_render/fpdf_render_loadimage.cpp b/core/src/fpdfapi/fpdf_render/fpdf_render_loadimage.cpp deleted file mode 100644 index 93b867005c..0000000000 --- a/core/src/fpdfapi/fpdf_render/fpdf_render_loadimage.cpp +++ /dev/null @@ -1,1656 +0,0 @@ -// 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/src/fpdfapi/fpdf_render/render_int.h" - -#include <algorithm> -#include <memory> -#include <vector> - -#include "core/include/fpdfapi/cpdf_array.h" -#include "core/include/fpdfapi/cpdf_dictionary.h" -#include "core/include/fpdfapi/cpdf_document.h" -#include "core/include/fpdfapi/fpdf_module.h" -#include "core/include/fpdfapi/fpdf_pageobj.h" -#include "core/include/fpdfapi/fpdf_render.h" -#include "core/include/fxcodec/fx_codec.h" -#include "core/include/fxcrt/fx_safe_types.h" -#include "core/include/fxge/fx_ge.h" -#include "core/src/fpdfapi/fpdf_page/pageint.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; - } else if (nbits == 16) { - return byte * 256 + pData[bitpos / 8 + 1]; - } - - return (byte >> (8 - nbits - (bitpos % 8))) & ((1 << nbits) - 1); -} - -FX_SAFE_DWORD CalculatePitch8(FX_DWORD bpc, FX_DWORD components, int width) { - FX_SAFE_DWORD pitch = bpc; - pitch *= components; - pitch *= width; - pitch += 7; - pitch /= 8; - return pitch; -} - -FX_SAFE_DWORD CalculatePitch32(int bpp, int width) { - FX_SAFE_DWORD 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(ICodec_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: - ICodec_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 - -CFX_DIBSource* CPDF_Image::LoadDIBSource(CFX_DIBSource** ppMask, - FX_DWORD* pMatteColor, - FX_BOOL bStdCS, - FX_DWORD GroupFamily, - FX_BOOL bLoadMask) const { - std::unique_ptr<CPDF_DIBSource> source(new CPDF_DIBSource); - if (source->Load(m_pDocument, m_pStream, - reinterpret_cast<CPDF_DIBSource**>(ppMask), pMatteColor, - nullptr, nullptr, bStdCS, GroupFamily, bLoadMask)) { - return source.release(); - } - return nullptr; -} - -CFX_DIBSource* CPDF_Image::DetachBitmap() { - CFX_DIBSource* pBitmap = m_pDIBSource; - m_pDIBSource = nullptr; - return pBitmap; -} - -CFX_DIBSource* CPDF_Image::DetachMask() { - CFX_DIBSource* pBitmap = m_pMask; - m_pMask = nullptr; - return pBitmap; -} - -FX_BOOL CPDF_Image::StartLoadDIBSource(CPDF_Dictionary* pFormResource, - CPDF_Dictionary* pPageResource, - FX_BOOL bStdCS, - FX_DWORD GroupFamily, - FX_BOOL bLoadMask) { - std::unique_ptr<CPDF_DIBSource> source(new CPDF_DIBSource); - int ret = - source->StartLoadDIBSource(m_pDocument, m_pStream, TRUE, pFormResource, - pPageResource, bStdCS, GroupFamily, bLoadMask); - if (ret == 2) { - m_pDIBSource = source.release(); - return TRUE; - } - if (!ret) { - m_pDIBSource = nullptr; - return FALSE; - } - m_pMask = source->DetachMask(); - m_MatteColor = source->GetMatteColor(); - m_pDIBSource = source.release(); - return FALSE; -} - -FX_BOOL CPDF_Image::Continue(IFX_Pause* pPause) { - CPDF_DIBSource* pSource = static_cast<CPDF_DIBSource*>(m_pDIBSource); - int ret = pSource->ContinueLoadDIBSource(pPause); - if (ret == 2) { - return TRUE; - } - if (!ret) { - delete m_pDIBSource; - m_pDIBSource = nullptr; - return FALSE; - } - m_pMask = pSource->DetachMask(); - m_MatteColor = pSource->GetMatteColor(); - return FALSE; -} - -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_pJbig2Context(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()); - } - if (m_pJbig2Context) { - ICodec_Jbig2Module* pJbig2Module = CPDF_ModuleMgr::Get()->GetJbig2Module(); - pJbig2Module->DestroyJbig2Context(m_pJbig2Context); - } -} - -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, - FX_DWORD* pMatteColor, - CPDF_Dictionary* pFormResources, - CPDF_Dictionary* pPageResources, - FX_BOOL bStdCS, - FX_DWORD 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->GetIntegerBy("Width"); - m_Height = m_pDict->GetIntegerBy("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_DWORD 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_DWORD 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_DWORD 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, - FX_DWORD 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->GetIntegerBy("Width"); - m_Height = m_pDict->GetIntegerBy("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_DWORD 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; - } - ICodec_Jbig2Module* pJbig2Module = CPDF_ModuleMgr::Get()->GetJbig2Module(); - if (!m_pJbig2Context) { - m_pJbig2Context = pJbig2Module->CreateJbig2Context(); - if (m_pStreamAcc->GetImageParam()) { - CPDF_Stream* pGlobals = - m_pStreamAcc->GetImageParam()->GetStreamBy("JBIG2Globals"); - if (pGlobals) { - m_pGlobalStream.reset(new CPDF_StreamAcc); - m_pGlobalStream->LoadAllData(pGlobals, FALSE); - } - } - ret = pJbig2Module->StartDecode( - m_pJbig2Context, m_pDocument, 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(); - pJbig2Module->DestroyJbig2Context(m_pJbig2Context); - m_pJbig2Context = nullptr; - 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; - } - FXCODEC_STATUS ret = pJbig2Module->ContinueDecode(m_pJbig2Context, pPause); - if (ret < 0) { - m_pCachedBitmap.reset(); - m_pGlobalStream.reset(); - pJbig2Module->DestroyJbig2Context(m_pJbig2Context); - m_pJbig2Context = nullptr; - 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->GetIntegerBy("BitsPerComponent"); - if (m_pDict->GetIntegerBy("ImageMask")) - m_bImageMask = TRUE; - - if (m_bImageMask || !m_pDict->KeyExist("ColorSpace")) { - if (!m_bImageMask) { - CPDF_Object* pFilter = m_pDict->GetElementValue("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->GetArrayBy("Decode"); - m_bDefaultDecode = !pDecode || !pDecode->GetIntegerAt(0); - return true; - } - - CPDF_Object* pCSObj = m_pDict->GetElementValue("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->GetArrayBy("Decode"); - if (pDecode) { - for (FX_DWORD 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 (FX_DWORD 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->GetElementValue("Mask"); - if (!pMask) { - return pCompData; - } - if (CPDF_Array* pArray = pMask->AsArray()) { - if (pArray->GetCount() >= m_nComponents * 2) { - for (FX_DWORD 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; -} - -ICodec_ScanlineDecoder* FPDFAPI_CreateFaxDecoder( - const uint8_t* src_buf, - FX_DWORD src_size, - int width, - int height, - const CPDF_Dictionary* pParams); - -ICodec_ScanlineDecoder* FPDFAPI_CreateFlateDecoder( - const uint8_t* src_buf, - FX_DWORD 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(); - FX_DWORD 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->GetIntegerBy("ColorTransform", 1) : 1)); - if (!m_pDecoder) { - FX_BOOL bTransform = FALSE; - int comps; - int bpc; - ICodec_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<FX_DWORD>(comps)) { - FX_Free(m_pCompData); - m_nComponents = static_cast<FX_DWORD>(comps); - if (m_Family == PDFCS_LAB && m_nComponents != 3) { - m_pCompData = nullptr; - 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_DWORD requested_pitch = - CalculatePitch8(m_bpc, m_nComponents, m_Width); - if (!requested_pitch.IsValid()) { - return 0; - } - FX_SAFE_DWORD 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() { - ICodec_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; - - FX_DWORD width = 0; - FX_DWORD height = 0; - FX_DWORD 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 (FX_DWORD 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 (FX_DWORD row = 0; row < height; ++row) { - uint8_t* scanline = - const_cast<uint8_t*>(m_pCachedBitmap->GetScanline(row)); - for (FX_DWORD col = 0; col < width; ++col) { - *scanline = (*scanline) >> scale; - ++scanline; - } - } - } - m_bpc = 8; -} - -CPDF_DIBSource* CPDF_DIBSource::LoadMask(FX_DWORD& MatteColor) { - MatteColor = 0xFFFFFFFF; - CPDF_Stream* pSoftMask = m_pDict->GetStreamBy("SMask"); - if (pSoftMask) { - CPDF_Array* pMatte = pSoftMask->GetDict()->GetArrayBy("Matte"); - if (pMatte && m_pColorSpace && - m_pColorSpace->CountComponents() <= m_nComponents) { - std::vector<FX_FLOAT> colors(m_nComponents); - for (FX_DWORD 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->GetElementValue("Mask"))) - return LoadMaskDIB(pStream); - - return nullptr; -} - -int CPDF_DIBSource::StratLoadMask() { - m_MatteColor = 0XFFFFFFFF; - m_pMaskStream = m_pDict->GetStreamBy("SMask"); - if (m_pMaskStream) { - CPDF_Array* pMatte = m_pMaskStream->GetDict()->GetArrayBy("Matte"); - if (pMatte && m_pColorSpace && - m_pColorSpace->CountComponents() <= m_nComponents) { - FX_FLOAT R, G, B; - std::vector<FX_FLOAT> colors(m_nComponents); - for (FX_DWORD 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->GetElementValue("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 (FX_DWORD 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 i = 0; i < nComponents; i++) { - temp_buf[i] = *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->GetElementValue("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) { - 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 (FX_DWORD 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 (FX_DWORD 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_DWORD src_pitch = CalculatePitch8(m_bpc, m_nComponents, m_Width); - if (!src_pitch.IsValid()) - return nullptr; - FX_DWORD 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 (FX_DWORD i = 0; i < src_pitch_value; i++) { - m_pLineBuf[i] = ~pSrcLine[i]; - } - } else if (m_bColorKey) { - FX_DWORD reset_argb, set_argb; - reset_argb = m_pPalette ? m_pPalette[0] : 0xFF000000; - set_argb = m_pPalette ? m_pPalette[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); - FX_DWORD* dest_scan = reinterpret_cast<FX_DWORD*>(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 (FX_DWORD 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[index]); - *pDestPixel++ = FXARGB_G(m_pPalette[index]); - *pDestPixel++ = FXARGB_R(m_pPalette[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; - } - - FX_DWORD src_width = m_Width; - FX_SAFE_DWORD 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 { - FX_DWORD 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, - FX_DWORD src_width, - const uint8_t* pSrcLine, - uint8_t* dest_scan, - int dest_width, - FX_BOOL bFlipX, - int clip_left, - int clip_width) const { - FX_DWORD set_argb = (FX_DWORD)-1; - FX_DWORD reset_argb = 0; - if (m_bImageMask) { - if (m_bDefaultDecode) { - set_argb = 0; - reset_argb = (FX_DWORD)-1; - } - } else if (m_bColorKey) { - reset_argb = m_pPalette ? m_pPalette[0] : 0xFF000000; - set_argb = m_pPalette ? m_pPalette[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); - FX_DWORD* dest_scan_dword = reinterpret_cast<FX_DWORD*>(dest_scan); - for (int i = 0; i < clip_width; i++) { - FX_DWORD 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[0]; - set_argb = m_pPalette[1]; - } - } - for (int i = 0; i < clip_width; i++) { - FX_DWORD 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<FX_DWORD*>(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<FX_DWORD*>(dest_scan + dest_pos) = reset_argb; - } - } - } -} - -void CPDF_DIBSource::DownSampleScanline8Bit(int orig_Bpp, - int dest_Bpp, - FX_DWORD 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 (FX_DWORD col = 0; col < src_width; col++) { - unsigned int color_index = 0; - for (FX_DWORD 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++) { - FX_DWORD 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[index]); - *pDestPixel++ = FXARGB_G(m_pPalette[index]); - *pDestPixel++ = FXARGB_R(m_pPalette[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++) { - FX_DWORD 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[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, - FX_DWORD 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. - FX_DWORD 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; - FX_DWORD 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 (FX_DWORD 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 (FX_DWORD 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 (FX_DWORD 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<FX_DWORD*>(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; -} - -void CPDF_DIBSource::SetDownSampleSize(int dest_width, int dest_height) { - if (m_pDecoder) { - m_pDecoder->DownScale(dest_width, dest_height); - m_Width = m_pDecoder->GetWidth(); - m_Height = m_pDecoder->GetHeight(); - } -} - -void CPDF_DIBSource::ClearImageData() { - if (m_pDecoder) { - m_pDecoder->ClearImageData(); - } -} - -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, - FX_DWORD 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(pImage->m_pImage->GetStream(), bStdCS, - GroupFamily, bLoadMask, pRenderStatus, - m_nDownsampleWidth, m_nDownsampleHeight); - if (!ret) { - m_pImageLoader->m_bCached = TRUE; - m_pImageLoader->m_pBitmap = - pCache->GetCurImageCacheEntry()->DetachBitmap(); - m_pImageLoader->m_pMask = pCache->GetCurImageCacheEntry()->DetachMask(); - m_pImageLoader->m_MatteColor = - pCache->GetCurImageCacheEntry()->m_MatteColor; - } - } else { - ret = pImage->m_pImage->StartLoadDIBSource(pRenderStatus->m_pFormResource, - pRenderStatus->m_pPageResource, - bStdCS, GroupFamily, bLoadMask); - if (!ret) { - m_pImageLoader->m_bCached = FALSE; - m_pImageLoader->m_pBitmap = m_pImage->m_pImage->DetachBitmap(); - m_pImageLoader->m_pMask = m_pImage->m_pImage->DetachMask(); - m_pImageLoader->m_MatteColor = m_pImage->m_pImage->m_MatteColor; - } - } - return ret; -} - -FX_BOOL CPDF_ImageLoaderHandle::Continue(IFX_Pause* pPause) { - FX_BOOL ret; - if (m_pCache) { - ret = m_pCache->Continue(pPause); - if (!ret) { - m_pImageLoader->m_bCached = TRUE; - m_pImageLoader->m_pBitmap = - m_pCache->GetCurImageCacheEntry()->DetachBitmap(); - m_pImageLoader->m_pMask = m_pCache->GetCurImageCacheEntry()->DetachMask(); - m_pImageLoader->m_MatteColor = - m_pCache->GetCurImageCacheEntry()->m_MatteColor; - } - } else { - ret = m_pImage->m_pImage->Continue(pPause); - if (!ret) { - m_pImageLoader->m_bCached = FALSE; - m_pImageLoader->m_pBitmap = m_pImage->m_pImage->DetachBitmap(); - m_pImageLoader->m_pMask = m_pImage->m_pImage->DetachMask(); - m_pImageLoader->m_MatteColor = m_pImage->m_pImage->m_MatteColor; - } - } - return ret; -} - -FX_BOOL CPDF_ImageLoader::Start(const CPDF_ImageObject* pImage, - CPDF_PageRenderCache* pCache, - CPDF_ImageLoaderHandle*& LoadHandle, - FX_BOOL bStdCS, - FX_DWORD GroupFamily, - FX_BOOL bLoadMask, - CPDF_RenderStatus* pRenderStatus, - int32_t nDownsampleWidth, - int32_t nDownsampleHeight) { - m_nDownsampleWidth = nDownsampleWidth; - m_nDownsampleHeight = nDownsampleHeight; - LoadHandle = new CPDF_ImageLoaderHandle; - return LoadHandle->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; - } -} |