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Unified Diff: core/fpdfapi/fpdf_render/fpdf_render_loadimage.cpp

Issue 2393593002: Move core/fpdfapi/fpdf_render to core/fpdfapi/render (Closed)
Patch Set: Rebase to master Created 4 years, 2 months ago
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Index: core/fpdfapi/fpdf_render/fpdf_render_loadimage.cpp
diff --git a/core/fpdfapi/fpdf_render/fpdf_render_loadimage.cpp b/core/fpdfapi/fpdf_render/fpdf_render_loadimage.cpp
deleted file mode 100644
index ef4074ff15c12d961da0373c15ac62621d319351..0000000000000000000000000000000000000000
--- a/core/fpdfapi/fpdf_render/fpdf_render_loadimage.cpp
+++ /dev/null
@@ -1,1559 +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/fpdfapi/fpdf_render/render_int.h"
-
-#include <algorithm>
-#include <memory>
-#include <vector>
-
-#include "core/fpdfapi/cpdf_modulemgr.h"
-#include "core/fpdfapi/fpdf_render/cpdf_pagerendercache.h"
-#include "core/fpdfapi/page/cpdf_image.h"
-#include "core/fpdfapi/page/cpdf_imageobject.h"
-#include "core/fpdfapi/page/pageint.h"
-#include "core/fpdfapi/parser/cpdf_array.h"
-#include "core/fpdfapi/parser/cpdf_dictionary.h"
-#include "core/fpdfapi/parser/cpdf_document.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;
- }
-}
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