FX_BOOL CPDF_IndexedCS::v_Load(CPDF_Document* pDoc, CPDF_Array* pArray)
{
if (pArray->GetCount() < 4) {
return FALSE;
}
CPDF_Object* pBaseObj = pArray->GetElementValue(1);
if (pBaseObj == m_pArray) {
return FALSE;
}
CPDF_DocPageData* pDocPageData = pDoc->GetPageData();
m_pBaseCS = pDocPageData->GetColorSpace(pBaseObj, NULL);
if (m_pBaseCS == NULL) {
return FALSE;
}
m_nBaseComponents = m_pBaseCS->CountComponents();
m_pCompMinMax = FX_Alloc(FX_FLOAT, m_nBaseComponents * 2);
FX_FLOAT defvalue;
for (int i = 0; i < m_nBaseComponents; i ++) {
m_pBaseCS->GetDefaultValue(i, defvalue, m_pCompMinMax[i * 2], m_pCompMinMax[i * 2 + 1]);
m_pCompMinMax[i * 2 + 1] -= m_pCompMinMax[i * 2];
}
m_MaxIndex = pArray->GetInteger(2);
CPDF_Object* pTableObj = pArray->GetElementValue(3);
if (pTableObj == NULL) {
return FALSE;
}
if (pTableObj->GetType() == PDFOBJ_STRING) {
m_Table = ((CPDF_String*)pTableObj)->GetString();
} else if (pTableObj->GetType() == PDFOBJ_STREAM) {
CPDF_StreamAcc acc;
acc.LoadAllData((CPDF_Stream*)pTableObj, FALSE);
m_Table = CFX_ByteStringC(acc.GetData(), acc.GetSize());
}
return TRUE;
}
FX_BOOL CPDF_SeparationCS::GetRGB(FX_FLOAT* pBuf, FX_FLOAT& R, FX_FLOAT& G, FX_FLOAT& B) const
{
if (m_Type == None) {
return FALSE;
}
if (m_pFunc == NULL) {
if (m_pAltCS == NULL) {
return FALSE;
}
int nComps = m_pAltCS->CountComponents();
CFX_FixedBufGrow<FX_FLOAT, 16> results(nComps);
for (int i = 0; i < nComps; i ++) {
results[i] = *pBuf;
}
m_pAltCS->GetRGB(results, R, G, B);
return TRUE;
}
CFX_FixedBufGrow<FX_FLOAT, 16> results(m_pFunc->CountOutputs());
int nresults = 0;
m_pFunc->Call(pBuf, 1, results, nresults);
if (nresults == 0) {
return FALSE;
}
if (m_pAltCS) {
m_pAltCS->GetRGB(results, R, G, B);
return TRUE;
}
R = G = B = 0;
return FALSE;
}
CPDF_IndexedCS::~CPDF_IndexedCS() {
FX_Free(m_pCompMinMax);
CPDF_ColorSpace* pCS = m_pCountedBaseCS ? m_pCountedBaseCS->get() : NULL;
if (pCS && m_pDocument) {
m_pDocument->GetPageData()->ReleaseColorSpace(pCS->GetArray());
}
}
CPDF_PatternCS::~CPDF_PatternCS()
{
CPDF_ColorSpace* pCS = m_pCountedBaseCS ? m_pCountedBaseCS->get() : NULL;
if (pCS && m_pDocument) {
m_pDocument->GetPageData()->ReleaseColorSpace(pCS->GetArray());
}
}
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());
}
}
void CPDF_ShadingPattern::Clear()
{
for (int i = 0; i < m_nFuncs; i ++) {
if (m_pFunctions[i]) {
delete m_pFunctions[i];
}
m_pFunctions[i] = NULL;
}
CPDF_ColorSpace* pCS = m_pCS;
if (pCS && m_pDocument) {
m_pDocument->GetPageData()->ReleaseColorSpace(pCS->GetArray());
}
m_ShadingType = 0;
m_pCS = NULL;
m_nFuncs = 0;
}
void CPDF_ICCBasedCS::EnableStdConversion(FX_BOOL bEnabled)
{
CPDF_ColorSpace::EnableStdConversion(bEnabled);
if (m_pAlterCS) {
m_pAlterCS->EnableStdConversion(bEnabled);
}
}
void CPDF_IndexedCS::EnableStdConversion(FX_BOOL bEnabled)
{
CPDF_ColorSpace::EnableStdConversion(bEnabled);
if (m_pBaseCS) {
m_pBaseCS->EnableStdConversion(bEnabled);
}
}
FX_BOOL CPDF_SeparationCS::v_Load(CPDF_Document* pDoc, CPDF_Array* pArray)
{
CFX_ByteString name = pArray->GetString(1);
if (name == FX_BSTRC("None")) {
m_Type = None;
} else {
m_Type = Colorant;
CPDF_Object* pAltCS = pArray->GetElementValue(2);
if (pAltCS == m_pArray) {
return FALSE;
}
m_pAltCS = Load(pDoc, pAltCS);
if (!m_pAltCS) {
return FALSE;
}
CPDF_Object* pFuncObj = pArray->GetElementValue(3);
if (pFuncObj && pFuncObj->GetType() != PDFOBJ_NAME) {
m_pFunc = CPDF_Function::Load(pFuncObj);
}
if (m_pFunc && m_pFunc->CountOutputs() < m_pAltCS->CountComponents()) {
delete m_pFunc;
m_pFunc = NULL;
}
}
return TRUE;
}
FX_BOOL CPDF_IndexedCS::GetRGB(FX_FLOAT* pBuf,
FX_FLOAT& R,
FX_FLOAT& G,
FX_FLOAT& B) const {
int index = (int32_t)(*pBuf);
if (index < 0 || index > m_MaxIndex) {
return FALSE;
}
if (m_nBaseComponents) {
if (index == INT_MAX || (index + 1) > INT_MAX / m_nBaseComponents ||
(index + 1) * m_nBaseComponents > (int)m_Table.GetLength()) {
R = G = B = 0;
return FALSE;
}
}
CFX_FixedBufGrow<FX_FLOAT, 16> Comps(m_nBaseComponents);
FX_FLOAT* comps = Comps;
const uint8_t* pTable = m_Table;
for (int i = 0; i < m_nBaseComponents; i++) {
comps[i] =
m_pCompMinMax[i * 2] +
m_pCompMinMax[i * 2 + 1] * pTable[index * m_nBaseComponents + i] / 255;
}
m_pBaseCS->GetRGB(comps, R, G, B);
return TRUE;
}
FX_BOOL CPDF_ICCBasedCS::GetRGB(FX_FLOAT* pBuf, FX_FLOAT& R, FX_FLOAT& G, FX_FLOAT& B) const
{
if (m_pProfile && m_pProfile->m_bsRGB) {
R = pBuf[0];
G = pBuf[1];
B = pBuf[2];
return TRUE;
}
ICodec_IccModule *pIccModule = CPDF_ModuleMgr::Get()->GetIccModule();
if (m_pProfile->m_pTransform == NULL || pIccModule == NULL) {
if (m_pAlterCS) {
m_pAlterCS->GetRGB(pBuf, R, G, B);
} else {
R = G = B = 0.0f;
}
return TRUE;
}
FX_FLOAT rgb[3];
pIccModule->SetComponents(m_nComponents);
pIccModule->Translate(m_pProfile->m_pTransform, pBuf, rgb);
R = rgb[0];
G = rgb[1];
B = rgb[2];
return TRUE;
}
void CPDF_SeparationCS::EnableStdConversion(FX_BOOL bEnabled)
{
CPDF_ColorSpace::EnableStdConversion(bEnabled);
if (m_pAltCS) {
m_pAltCS->EnableStdConversion(bEnabled);
}
}
void CPDF_ICCBasedCS::TranslateImageLine(uint8_t* pDestBuf,
const uint8_t* pSrcBuf,
int pixels,
int image_width,
int image_height,
FX_BOOL bTransMask) const {
if (m_pProfile->m_bsRGB) {
ReverseRGB(pDestBuf, pSrcBuf, pixels);
} else if (m_pProfile->m_pTransform) {
int nMaxColors = 1;
for (int i = 0; i < m_nComponents; i++) {
nMaxColors *= 52;
}
if (m_nComponents > 3 || image_width * image_height < nMaxColors * 3 / 2) {
CPDF_ModuleMgr::Get()->GetIccModule()->TranslateScanline(
m_pProfile->m_pTransform, pDestBuf, pSrcBuf, pixels);
} else {
if (m_pCache == NULL) {
((CPDF_ICCBasedCS*)this)->m_pCache = FX_Alloc2D(uint8_t, nMaxColors, 3);
uint8_t* temp_src = FX_Alloc2D(uint8_t, nMaxColors, m_nComponents);
uint8_t* pSrc = temp_src;
for (int i = 0; i < nMaxColors; i++) {
FX_DWORD color = i;
FX_DWORD order = nMaxColors / 52;
for (int c = 0; c < m_nComponents; c++) {
*pSrc++ = (uint8_t)(color / order * 5);
color %= order;
order /= 52;
}
}
CPDF_ModuleMgr::Get()->GetIccModule()->TranslateScanline(
m_pProfile->m_pTransform, m_pCache, temp_src, nMaxColors);
FX_Free(temp_src);
}
for (int i = 0; i < pixels; i++) {
int index = 0;
for (int c = 0; c < m_nComponents; c++) {
index = index * 52 + (*pSrcBuf) / 5;
pSrcBuf++;
}
index *= 3;
*pDestBuf++ = m_pCache[index];
*pDestBuf++ = m_pCache[index + 1];
*pDestBuf++ = m_pCache[index + 2];
}
}
} else if (m_pAlterCS) {
m_pAlterCS->TranslateImageLine(pDestBuf, pSrcBuf, pixels, image_width,
image_height);
}
}
FX_BOOL CPDF_DeviceNCS::GetRGB(FX_FLOAT* pBuf, FX_FLOAT& R, FX_FLOAT& G, FX_FLOAT& B) const
{
if (m_pFunc == NULL) {
return FALSE;
}
CFX_FixedBufGrow<FX_FLOAT, 16> results(m_pFunc->CountOutputs());
int nresults = 0;
m_pFunc->Call(pBuf, m_nComponents, results, nresults);
if (nresults == 0) {
return FALSE;
}
m_pAltCS->GetRGB(results, R, G, B);
return TRUE;
}
FX_BOOL CPDF_IndexedCS::v_Load(CPDF_Document* pDoc, CPDF_Array* pArray) {
if (pArray->GetCount() < 4) {
return FALSE;
}
CPDF_Object* pBaseObj = pArray->GetElementValue(1);
if (pBaseObj == m_pArray) {
return FALSE;
}
CPDF_DocPageData* pDocPageData = pDoc->GetPageData();
m_pBaseCS = pDocPageData->GetColorSpace(pBaseObj, NULL);
if (!m_pBaseCS) {
return FALSE;
}
m_pCountedBaseCS = pDocPageData->FindColorSpacePtr(m_pBaseCS->GetArray());
m_nBaseComponents = m_pBaseCS->CountComponents();
m_pCompMinMax = FX_Alloc2D(FX_FLOAT, m_nBaseComponents, 2);
FX_FLOAT defvalue;
for (int i = 0; i < m_nBaseComponents; i++) {
m_pBaseCS->GetDefaultValue(i, defvalue, m_pCompMinMax[i * 2],
m_pCompMinMax[i * 2 + 1]);
m_pCompMinMax[i * 2 + 1] -= m_pCompMinMax[i * 2];
}
m_MaxIndex = pArray->GetInteger(2);
CPDF_Object* pTableObj = pArray->GetElementValue(3);
if (!pTableObj)
return FALSE;
if (CPDF_String* pString = pTableObj->AsString()) {
m_Table = pString->GetString();
} else if (CPDF_Stream* pStream = pTableObj->AsStream()) {
CPDF_StreamAcc acc;
acc.LoadAllData(pStream, FALSE);
m_Table = CFX_ByteStringC(acc.GetData(), acc.GetSize());
}
return TRUE;
}
FX_BOOL CPDF_DeviceNCS::v_Load(CPDF_Document* pDoc, CPDF_Array* pArray) {
CPDF_Array* pObj = ToArray(pArray->GetElementValue(1));
if (!pObj)
return FALSE;
m_nComponents = pObj->GetCount();
CPDF_Object* pAltCS = pArray->GetElementValue(2);
if (!pAltCS || pAltCS == m_pArray) {
return FALSE;
}
m_pAltCS = Load(pDoc, pAltCS);
m_pFunc = CPDF_Function::Load(pArray->GetElementValue(3));
if (!m_pAltCS || !m_pFunc) {
return FALSE;
}
if (m_pFunc->CountOutputs() < m_pAltCS->CountComponents()) {
return FALSE;
}
return TRUE;
}
FX_BOOL CPDF_DeviceNCS::v_Load(CPDF_Document* pDoc, CPDF_Array* pArray) {
CPDF_Object* pObj = pArray->GetElementValue(1);
if (!pObj) {
return FALSE;
}
if (pObj->GetType() != PDFOBJ_ARRAY) {
return FALSE;
}
m_nComponents = ((CPDF_Array*)pObj)->GetCount();
CPDF_Object* pAltCS = pArray->GetElementValue(2);
if (!pAltCS || pAltCS == m_pArray) {
return FALSE;
}
m_pAltCS = Load(pDoc, pAltCS);
m_pFunc = CPDF_Function::Load(pArray->GetElementValue(3));
if (m_pAltCS == NULL || m_pFunc == NULL) {
return FALSE;
}
if (m_pFunc->CountOutputs() < m_pAltCS->CountComponents()) {
return FALSE;
}
return TRUE;
}
std::unique_ptr<CPDF_Stream> CPDF_StreamParser::ReadInlineStream(
CPDF_Document* pDoc,
std::unique_ptr<CPDF_Dictionary> pDict,
const CPDF_Object* pCSObj) {
if (m_Pos < m_pBuf.size() && PDFCharIsWhitespace(m_pBuf[m_Pos]))
m_Pos++;
if (m_Pos == m_pBuf.size())
return nullptr;
ByteString Decoder;
CPDF_Dictionary* pParam = nullptr;
CPDF_Object* pFilter = pDict->GetDirectObjectFor("Filter");
if (pFilter) {
if (CPDF_Array* pArray = pFilter->AsArray()) {
Decoder = pArray->GetStringAt(0);
CPDF_Array* pParams = pDict->GetArrayFor(pdfium::stream::kDecodeParms);
if (pParams)
pParam = pParams->GetDictAt(0);
} else {
Decoder = pFilter->GetString();
pParam = pDict->GetDictFor(pdfium::stream::kDecodeParms);
}
}
uint32_t width = pDict->GetIntegerFor("Width");
uint32_t height = pDict->GetIntegerFor("Height");
uint32_t OrigSize = 0;
if (pCSObj) {
uint32_t bpc = pDict->GetIntegerFor("BitsPerComponent");
uint32_t nComponents = 1;
CPDF_ColorSpace* pCS = pDoc->LoadColorSpace(pCSObj, nullptr);
if (pCS) {
nComponents = pCS->CountComponents();
pDoc->GetPageData()->ReleaseColorSpace(pCSObj);
} else {
nComponents = 3;
}
uint32_t pitch = width;
if (bpc && pitch > INT_MAX / bpc)
return nullptr;
pitch *= bpc;
if (nComponents && pitch > INT_MAX / nComponents)
return nullptr;
pitch *= nComponents;
if (pitch > INT_MAX - 7)
return nullptr;
pitch += 7;
pitch /= 8;
OrigSize = pitch;
} else {
if (width > INT_MAX - 7)
return nullptr;
OrigSize = ((width + 7) / 8);
}
if (height && OrigSize > INT_MAX / height)
return nullptr;
OrigSize *= height;
std::unique_ptr<uint8_t, FxFreeDeleter> pData;
uint32_t dwStreamSize;
if (Decoder.IsEmpty()) {
if (OrigSize > m_pBuf.size() - m_Pos)
OrigSize = m_pBuf.size() - m_Pos;
pData.reset(FX_Alloc(uint8_t, OrigSize));
auto copy_span = m_pBuf.subspan(m_Pos, OrigSize);
memcpy(pData.get(), copy_span.data(), copy_span.size());
dwStreamSize = OrigSize;
m_Pos += OrigSize;
} else {
dwStreamSize = DecodeInlineStream(m_pBuf.subspan(m_Pos), width, height,
Decoder, pParam, OrigSize);
if (static_cast<int>(dwStreamSize) < 0)
return nullptr;
uint32_t dwSavePos = m_Pos;
m_Pos += dwStreamSize;
while (1) {
uint32_t dwPrevPos = m_Pos;
CPDF_StreamParser::SyntaxType type = ParseNextElement();
if (type == CPDF_StreamParser::EndOfData)
break;
if (type != CPDF_StreamParser::Keyword) {
dwStreamSize += m_Pos - dwPrevPos;
continue;
}
if (GetWord() == "EI") {
m_Pos = dwPrevPos;
break;
}
dwStreamSize += m_Pos - dwPrevPos;
}
m_Pos = dwSavePos;
pData.reset(FX_Alloc(uint8_t, dwStreamSize));
auto copy_span = m_pBuf.subspan(m_Pos, dwStreamSize);
memcpy(pData.get(), copy_span.data(), copy_span.size());
m_Pos += dwStreamSize;
}
pDict->SetNewFor<CPDF_Number>("Length", static_cast<int>(dwStreamSize));
return pdfium::MakeUnique<CPDF_Stream>(std::move(pData), dwStreamSize,
std::move(pDict));
}
void CPDF_StreamContentParser::EndImageDict()
{
if (m_StringBuf.GetSize() != m_LastImageDict.GetSize() ||
FXSYS_memcmp32(m_StringBuf.GetBuffer(), m_LastImageDict.GetBuffer(), m_StringBuf.GetSize())) {
m_WordState = 0;
StartDict();
InputData(m_StringBuf.GetBuffer(), m_StringBuf.GetSize());
Finish();
m_bSameLastDict = FALSE;
if (m_pLastImageDict && m_bReleaseLastDict) {
m_pLastImageDict->Release();
m_pLastImageDict = NULL;
}
if (!m_ObjectSize) {
m_InlineImageState = 0;
return;
}
m_pLastImageDict = (CPDF_Dictionary*)m_pObjectStack[--m_ObjectSize];
m_bReleaseLastDict = !m_pObjectState[m_ObjectSize];
m_pObjectState[m_ObjectSize] = FALSE;
_PDF_ReplaceAbbr(m_pLastImageDict);
m_LastImageDict.TakeOver(m_StringBuf);
if (m_pLastImageDict->KeyExist(FX_BSTRC("ColorSpace"))) {
CPDF_Object* pCSObj = m_pLastImageDict->GetElementValue(FX_BSTRC("ColorSpace"));
if (pCSObj->GetType() == PDFOBJ_NAME) {
CFX_ByteString name = pCSObj->GetString();
if (name != FX_BSTRC("DeviceRGB") && name != FX_BSTRC("DeviceGray") && name != FX_BSTRC("DeviceCMYK")) {
pCSObj = FindResourceObj(FX_BSTRC("ColorSpace"), name);
if (pCSObj) {
if (!pCSObj->GetObjNum()) {
pCSObj = pCSObj->Clone();
}
m_pLastImageDict->SetAt(FX_BSTRC("ColorSpace"), pCSObj, m_pDocument);
}
}
}
}
} else {
m_bSameLastDict = TRUE;
}
m_ImageSrcBuf.Clear();
if (m_pLastCloneImageDict) {
m_pLastCloneImageDict->Release();
}
m_pLastCloneImageDict = (CPDF_Dictionary*)m_pLastImageDict->Clone();
if (m_pLastCloneImageDict->KeyExist(FX_BSTRC("Filter"))) {
m_WordState = 10;
m_InlineImageState = 0;
} else {
int width = m_pLastCloneImageDict->GetInteger(FX_BSTRC("Width"));
int height = m_pLastCloneImageDict->GetInteger(FX_BSTRC("Height"));
int OrigSize = 0;
CPDF_Object* pCSObj = m_pLastCloneImageDict->GetElementValue(FX_BSTRC("ColorSpace"));
if (pCSObj != NULL) {
int bpc = m_pLastCloneImageDict->GetInteger(FX_BSTRC("BitsPerComponent"));
int nComponents = 1;
CPDF_ColorSpace* pCS = m_pDocument->LoadColorSpace(pCSObj);
if (pCS == NULL) {
nComponents = 3;
} else {
nComponents = pCS->CountComponents();
m_pDocument->GetPageData()->ReleaseColorSpace(pCSObj);
}
int pitch = (width * bpc * nComponents + 7) / 8;
OrigSize = pitch * height;
} else {
OrigSize = ((width + 7) / 8) * height;
}
m_ImageSrcBuf.AppendBlock(NULL, OrigSize);
m_WordState = 11;
m_InlineImageState = 0;
}
}
CPDF_Stream* CPDF_StreamParser::ReadInlineStream(CPDF_Document* pDoc, CPDF_Dictionary* pDict, CPDF_Object* pCSObj, FX_BOOL bDecode)
{
if (m_Pos == m_Size) {
return NULL;
}
if (PDF_CharType[m_pBuf[m_Pos]] == 'W') {
m_Pos ++;
}
CFX_ByteString Decoder;
CPDF_Dictionary* pParam = NULL;
CPDF_Object* pFilter = pDict->GetElementValue(FX_BSTRC("Filter"));
if (pFilter == NULL) {
} else if (pFilter->GetType() == PDFOBJ_ARRAY) {
Decoder = ((CPDF_Array*)pFilter)->GetString(0);
CPDF_Array* pParams = pDict->GetArray(FX_BSTRC("DecodeParms"));
if (pParams) {
pParam = pParams->GetDict(0);
}
} else {
Decoder = pFilter->GetString();
pParam = pDict->GetDict(FX_BSTRC("DecodeParms"));
}
FX_DWORD width = pDict->GetInteger(FX_BSTRC("Width"));
FX_DWORD height = pDict->GetInteger(FX_BSTRC("Height"));
FX_DWORD OrigSize = 0;
if (pCSObj != NULL) {
FX_DWORD bpc = pDict->GetInteger(FX_BSTRC("BitsPerComponent"));
FX_DWORD nComponents = 1;
CPDF_ColorSpace* pCS = pDoc->LoadColorSpace(pCSObj);
if (pCS == NULL) {
nComponents = 3;
} else {
nComponents = pCS->CountComponents();
pDoc->GetPageData()->ReleaseColorSpace(pCSObj);
}
FX_DWORD pitch = width;
if (bpc && pitch > INT_MAX / bpc) {
return NULL;
}
pitch *= bpc;
if (nComponents && pitch > INT_MAX / nComponents) {
return NULL;
}
pitch *= nComponents;
if (pitch > INT_MAX - 7) {
return NULL;
}
pitch += 7;
pitch /= 8;
OrigSize = pitch;
} else {
if (width > INT_MAX - 7) {
return NULL;
}
OrigSize = ((width + 7) / 8);
}
if (height && OrigSize > INT_MAX / height) {
return NULL;
}
OrigSize *= height;
uint8_t* pData = NULL;
FX_DWORD dwStreamSize;
if (Decoder.IsEmpty()) {
if (OrigSize > m_Size - m_Pos) {
OrigSize = m_Size - m_Pos;
}
pData = FX_Alloc(uint8_t, OrigSize);
FXSYS_memcpy(pData, m_pBuf + m_Pos, OrigSize);
dwStreamSize = OrigSize;
m_Pos += OrigSize;
} else {
FX_DWORD dwDestSize = OrigSize;
dwStreamSize = PDF_DecodeInlineStream(m_pBuf + m_Pos, m_Size - m_Pos, width, height, Decoder, pParam,
pData, dwDestSize);
if ((int)dwStreamSize < 0) {
return NULL;
}
if (bDecode) {
m_Pos += dwStreamSize;
dwStreamSize = dwDestSize;
if (pFilter->GetType() == PDFOBJ_ARRAY) {
((CPDF_Array*)pFilter)->RemoveAt(0);
CPDF_Array* pParams = pDict->GetArray(FX_BSTRC("DecodeParms"));
if (pParams) {
pParams->RemoveAt(0);
}
} else {
pDict->RemoveAt(FX_BSTRC("Filter"));
pDict->RemoveAt(FX_BSTRC("DecodeParms"));
}
} else {
if (pData) {
FX_Free(pData);
}
FX_DWORD dwSavePos = m_Pos;
m_Pos += dwStreamSize;
while (1) {
FX_DWORD dwPrevPos = m_Pos;
CPDF_StreamParser::SyntaxType type = ParseNextElement();
if (type == CPDF_StreamParser::EndOfData) {
break;
}
if (type != CPDF_StreamParser::Keyword) {
dwStreamSize += m_Pos - dwPrevPos;
continue;
}
if (GetWordSize() == 2 && GetWordBuf()[0] == 'E' &&
GetWordBuf()[1] == 'I') {
m_Pos = dwPrevPos;
break;
}
dwStreamSize += m_Pos - dwPrevPos;
}
m_Pos = dwSavePos;
pData = FX_Alloc(uint8_t, dwStreamSize);
FXSYS_memcpy(pData, m_pBuf + m_Pos, dwStreamSize);
m_Pos += dwStreamSize;
}
}
pDict->SetAtInteger(FX_BSTRC("Length"), (int)dwStreamSize);
return CPDF_Stream::Create(pData, dwStreamSize, pDict);
}
bool CPDF_ImageRenderer::StartRenderDIBSource() {
if (!m_Loader.m_pBitmap)
return false;
m_BitmapAlpha =
FXSYS_round(255 * m_pImageObject->m_GeneralState.GetFillAlpha());
m_pDIBSource = m_Loader.m_pBitmap;
if (m_pRenderStatus->m_Options.m_ColorMode == RENDER_COLOR_ALPHA &&
!m_Loader.m_pMask) {
return StartBitmapAlpha();
}
if (m_pImageObject->m_GeneralState.GetTR()) {
if (!m_pImageObject->m_GeneralState.GetTransferFunc()) {
m_pImageObject->m_GeneralState.SetTransferFunc(
m_pRenderStatus->GetTransferFunc(
m_pImageObject->m_GeneralState.GetTR()));
}
if (m_pImageObject->m_GeneralState.GetTransferFunc() &&
!m_pImageObject->m_GeneralState.GetTransferFunc()->m_bIdentity) {
m_pDIBSource = m_Loader.m_pBitmap =
m_pImageObject->m_GeneralState.GetTransferFunc()->TranslateImage(
m_Loader.m_pBitmap, !m_Loader.m_bCached);
if (m_Loader.m_bCached && m_Loader.m_pMask)
m_Loader.m_pMask = m_Loader.m_pMask->Clone().release();
m_Loader.m_bCached = false;
}
}
m_FillArgb = 0;
m_bPatternColor = false;
m_pPattern = nullptr;
if (m_pDIBSource->IsAlphaMask()) {
const CPDF_Color* pColor = m_pImageObject->m_ColorState.GetFillColor();
if (pColor && pColor->IsPattern()) {
m_pPattern = pColor->GetPattern();
if (m_pPattern)
m_bPatternColor = true;
}
m_FillArgb = m_pRenderStatus->GetFillArgb(m_pImageObject);
} else if (m_pRenderStatus->m_Options.m_ColorMode == RENDER_COLOR_GRAY) {
m_pClone = m_pDIBSource->Clone();
m_pClone->ConvertColorScale(m_pRenderStatus->m_Options.m_BackColor,
m_pRenderStatus->m_Options.m_ForeColor);
m_pDIBSource = m_pClone.get();
}
m_Flags = 0;
if (m_pRenderStatus->m_Options.m_Flags & RENDER_FORCE_DOWNSAMPLE)
m_Flags |= RENDER_FORCE_DOWNSAMPLE;
else if (m_pRenderStatus->m_Options.m_Flags & RENDER_FORCE_HALFTONE)
m_Flags |= RENDER_FORCE_HALFTONE;
if (m_pRenderStatus->m_pDevice->GetDeviceClass() != FXDC_DISPLAY) {
CPDF_Object* pFilters =
m_pImageObject->GetImage()->GetStream()->GetDict()->GetDirectObjectFor(
"Filter");
if (pFilters) {
if (pFilters->IsName()) {
CFX_ByteString bsDecodeType = pFilters->GetString();
if (bsDecodeType == "DCTDecode" || bsDecodeType == "JPXDecode")
m_Flags |= FXRENDER_IMAGE_LOSSY;
} else if (CPDF_Array* pArray = pFilters->AsArray()) {
for (size_t i = 0; i < pArray->GetCount(); i++) {
CFX_ByteString bsDecodeType = pArray->GetStringAt(i);
if (bsDecodeType == "DCTDecode" || bsDecodeType == "JPXDecode") {
m_Flags |= FXRENDER_IMAGE_LOSSY;
break;
}
}
}
}
}
if (m_pRenderStatus->m_Options.m_Flags & RENDER_NOIMAGESMOOTH)
m_Flags |= FXDIB_NOSMOOTH;
else if (m_pImageObject->GetImage()->IsInterpol())
m_Flags |= FXDIB_INTERPOL;
if (m_Loader.m_pMask)
return DrawMaskedImage();
if (m_bPatternColor)
return DrawPatternImage(m_pObj2Device);
if (m_BitmapAlpha != 255 || !m_pImageObject->m_GeneralState ||
!m_pImageObject->m_GeneralState.GetFillOP() ||
m_pImageObject->m_GeneralState.GetOPMode() != 0 ||
m_pImageObject->m_GeneralState.GetBlendType() != FXDIB_BLEND_NORMAL ||
m_pImageObject->m_GeneralState.GetStrokeAlpha() != 1.0f ||
m_pImageObject->m_GeneralState.GetFillAlpha() != 1.0f) {
return StartDIBSource();
}
CPDF_Document* pDocument = nullptr;
CPDF_Page* pPage = nullptr;
if (m_pRenderStatus->m_pContext->GetPageCache()) {
pPage = m_pRenderStatus->m_pContext->GetPageCache()->GetPage();
pDocument = pPage->m_pDocument;
} else {
pDocument = m_pImageObject->GetImage()->GetDocument();
}
CPDF_Dictionary* pPageResources = pPage ? pPage->m_pPageResources : nullptr;
CPDF_Object* pCSObj =
m_pImageObject->GetImage()->GetStream()->GetDict()->GetDirectObjectFor(
"ColorSpace");
CPDF_ColorSpace* pColorSpace =
pDocument->LoadColorSpace(pCSObj, pPageResources);
if (!pColorSpace)
return StartDIBSource();
int format = pColorSpace->GetFamily();
if (format == PDFCS_DEVICECMYK || format == PDFCS_SEPARATION ||
format == PDFCS_DEVICEN) {
m_BlendType = FXDIB_BLEND_DARKEN;
}
pDocument->GetPageData()->ReleaseColorSpace(pCSObj);
return StartDIBSource();
}
FX_BOOL CPDF_RenderStatus::ProcessTransparency(
const CPDF_PageObject* pPageObj,
const CFX_AffineMatrix* pObj2Device) {
const CPDF_GeneralStateData* pGeneralState = pPageObj->m_GeneralState;
int blend_type =
pGeneralState ? pGeneralState->m_BlendType : FXDIB_BLEND_NORMAL;
if (blend_type == FXDIB_BLEND_UNSUPPORTED) {
return TRUE;
}
CPDF_Dictionary* pSMaskDict =
pGeneralState ? ToDictionary(pGeneralState->m_pSoftMask) : NULL;
if (pSMaskDict) {
if (pPageObj->m_Type == PDFPAGE_IMAGE &&
((CPDF_ImageObject*)pPageObj)
->m_pImage->GetDict()
->KeyExist(FX_BSTRC("SMask"))) {
pSMaskDict = NULL;
}
}
CPDF_Dictionary* pFormResource = NULL;
FX_FLOAT group_alpha = 1.0f;
int Transparency = m_Transparency;
FX_BOOL bGroupTransparent = FALSE;
if (pPageObj->m_Type == PDFPAGE_FORM) {
CPDF_FormObject* pFormObj = (CPDF_FormObject*)pPageObj;
const CPDF_GeneralStateData* pStateData =
pFormObj->m_GeneralState.GetObject();
if (pStateData) {
group_alpha = pStateData->m_FillAlpha;
}
Transparency = pFormObj->m_pForm->m_Transparency;
bGroupTransparent = !!(Transparency & PDFTRANS_ISOLATED);
if (pFormObj->m_pForm->m_pFormDict) {
pFormResource = pFormObj->m_pForm->m_pFormDict->GetDict("Resources");
}
}
FX_BOOL bTextClip = FALSE;
if (pPageObj->m_ClipPath.NotNull() && pPageObj->m_ClipPath.GetTextCount() &&
m_pDevice->GetDeviceClass() == FXDC_DISPLAY &&
!(m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_SOFT_CLIP)) {
bTextClip = TRUE;
}
if ((m_Options.m_Flags & RENDER_OVERPRINT) &&
pPageObj->m_Type == PDFPAGE_IMAGE && pGeneralState &&
pGeneralState->m_FillOP && pGeneralState->m_StrokeOP) {
CPDF_Document* pDocument = NULL;
CPDF_Page* pPage = NULL;
if (m_pContext->m_pPageCache) {
pPage = m_pContext->m_pPageCache->GetPage();
pDocument = pPage->m_pDocument;
} else {
pDocument = ((CPDF_ImageObject*)pPageObj)->m_pImage->GetDocument();
}
CPDF_Dictionary* pPageResources = pPage ? pPage->m_pPageResources : NULL;
CPDF_Object* pCSObj = ((CPDF_ImageObject*)pPageObj)
->m_pImage->GetStream()
->GetDict()
->GetElementValue(FX_BSTRC("ColorSpace"));
CPDF_ColorSpace* pColorSpace =
pDocument->LoadColorSpace(pCSObj, pPageResources);
if (pColorSpace) {
int format = pColorSpace->GetFamily();
if (format == PDFCS_DEVICECMYK || format == PDFCS_SEPARATION ||
format == PDFCS_DEVICEN) {
blend_type = FXDIB_BLEND_DARKEN;
}
pDocument->GetPageData()->ReleaseColorSpace(pCSObj);
}
}
if (pSMaskDict == NULL && group_alpha == 1.0f &&
blend_type == FXDIB_BLEND_NORMAL && !bTextClip && !bGroupTransparent) {
return FALSE;
}
FX_BOOL isolated = Transparency & PDFTRANS_ISOLATED;
if (m_bPrint) {
FX_BOOL bRet = FALSE;
int rendCaps = m_pDevice->GetRenderCaps();
if (!((Transparency & PDFTRANS_ISOLATED) || pSMaskDict || bTextClip) &&
(rendCaps & FXRC_BLEND_MODE)) {
int oldBlend = m_curBlend;
m_curBlend = blend_type;
bRet = DrawObjWithBlend(pPageObj, pObj2Device);
m_curBlend = oldBlend;
}
if (!bRet) {
DrawObjWithBackground(pPageObj, pObj2Device);
}
return TRUE;
}
FX_RECT rect = pPageObj->GetBBox(pObj2Device);
rect.Intersect(m_pDevice->GetClipBox());
if (rect.IsEmpty()) {
return TRUE;
}
CFX_Matrix deviceCTM = m_pDevice->GetCTM();
FX_FLOAT scaleX = FXSYS_fabs(deviceCTM.a);
FX_FLOAT scaleY = FXSYS_fabs(deviceCTM.d);
int width = FXSYS_round((FX_FLOAT)rect.Width() * scaleX);
int height = FXSYS_round((FX_FLOAT)rect.Height() * scaleY);
CFX_FxgeDevice bitmap_device;
nonstd::unique_ptr<CFX_DIBitmap> oriDevice;
if (!isolated && (m_pDevice->GetRenderCaps() & FXRC_GET_BITS)) {
oriDevice.reset(new CFX_DIBitmap);
if (!m_pDevice->CreateCompatibleBitmap(oriDevice.get(), width, height))
return TRUE;
m_pDevice->GetDIBits(oriDevice.get(), rect.left, rect.top);
}
if (!bitmap_device.Create(width, height, FXDIB_Argb, 0, oriDevice.get()))
return TRUE;
CFX_DIBitmap* bitmap = bitmap_device.GetBitmap();
bitmap->Clear(0);
CFX_AffineMatrix new_matrix = *pObj2Device;
new_matrix.TranslateI(-rect.left, -rect.top);
new_matrix.Scale(scaleX, scaleY);
nonstd::unique_ptr<CFX_DIBitmap> pTextMask;
if (bTextClip) {
pTextMask.reset(new CFX_DIBitmap);
if (!pTextMask->Create(width, height, FXDIB_8bppMask))
return TRUE;
pTextMask->Clear(0);
CFX_FxgeDevice text_device;
text_device.Attach(pTextMask.get());
for (FX_DWORD i = 0; i < pPageObj->m_ClipPath.GetTextCount(); i++) {
CPDF_TextObject* textobj = pPageObj->m_ClipPath.GetText(i);
if (textobj == NULL) {
break;
}
CFX_AffineMatrix text_matrix;
textobj->GetTextMatrix(&text_matrix);
CPDF_TextRenderer::DrawTextPath(
&text_device, textobj->m_nChars, textobj->m_pCharCodes,
textobj->m_pCharPos, textobj->m_TextState.GetFont(),
textobj->m_TextState.GetFontSize(), &text_matrix, &new_matrix,
textobj->m_GraphState, (FX_ARGB)-1, 0, NULL);
}
}
CPDF_RenderStatus bitmap_render;
bitmap_render.Initialize(m_pContext, &bitmap_device, NULL, m_pStopObj, NULL,
NULL, &m_Options, 0, m_bDropObjects, pFormResource,
TRUE);
bitmap_render.ProcessObjectNoClip(pPageObj, &new_matrix);
m_bStopped = bitmap_render.m_bStopped;
if (pSMaskDict) {
CFX_AffineMatrix smask_matrix;
FXSYS_memcpy(&smask_matrix, pGeneralState->m_SMaskMatrix,
sizeof smask_matrix);
smask_matrix.Concat(*pObj2Device);
nonstd::unique_ptr<CFX_DIBSource> pSMaskSource(
LoadSMask(pSMaskDict, &rect, &smask_matrix));
if (pSMaskSource)
bitmap->MultiplyAlpha(pSMaskSource.get());
}
if (pTextMask) {
bitmap->MultiplyAlpha(pTextMask.get());
pTextMask.reset();
}
if (Transparency & PDFTRANS_GROUP && group_alpha != 1.0f) {
bitmap->MultiplyAlpha((int32_t)(group_alpha * 255));
}
Transparency = m_Transparency;
if (pPageObj->m_Type == PDFPAGE_FORM) {
Transparency |= PDFTRANS_GROUP;
}
CompositeDIBitmap(bitmap, rect.left, rect.top, 0, 255, blend_type,
Transparency);
return TRUE;
}
void CPDF_RenderStatus::DrawShading(CPDF_ShadingPattern* pPattern,
CFX_Matrix* pMatrix,
FX_RECT& clip_rect,
int alpha,
FX_BOOL bAlphaMode) {
CPDF_Function** pFuncs = pPattern->m_pFunctions;
int nFuncs = pPattern->m_nFuncs;
CPDF_Dictionary* pDict = pPattern->m_pShadingObj->GetDict();
CPDF_ColorSpace* pColorSpace = pPattern->m_pCS;
if (!pColorSpace) {
return;
}
FX_ARGB background = 0;
if (!pPattern->m_bShadingObj &&
pPattern->m_pShadingObj->GetDict()->KeyExist("Background")) {
CPDF_Array* pBackColor =
pPattern->m_pShadingObj->GetDict()->GetArray("Background");
if (pBackColor &&
pBackColor->GetCount() >= (FX_DWORD)pColorSpace->CountComponents()) {
CFX_FixedBufGrow<FX_FLOAT, 16> comps(pColorSpace->CountComponents());
for (int i = 0; i < pColorSpace->CountComponents(); i++) {
comps[i] = pBackColor->GetNumber(i);
}
FX_FLOAT R = 0.0f, G = 0.0f, B = 0.0f;
pColorSpace->GetRGB(comps, R, G, B);
background = ArgbEncode(255, (int32_t)(R * 255), (int32_t)(G * 255),
(int32_t)(B * 255));
}
}
if (pDict->KeyExist("BBox")) {
CFX_FloatRect rect = pDict->GetRect("BBox");
rect.Transform(pMatrix);
clip_rect.Intersect(rect.GetOutterRect());
}
CPDF_DeviceBuffer buffer;
buffer.Initialize(m_pContext, m_pDevice, &clip_rect, m_pCurObj, 150);
CFX_Matrix FinalMatrix = *pMatrix;
FinalMatrix.Concat(*buffer.GetMatrix());
CFX_DIBitmap* pBitmap = buffer.GetBitmap();
if (!pBitmap->GetBuffer()) {
return;
}
pBitmap->Clear(background);
int fill_mode = m_Options.m_Flags;
switch (pPattern->m_ShadingType) {
case kInvalidShading:
case kMaxShading:
return;
case kFunctionBasedShading:
DrawFuncShading(pBitmap, &FinalMatrix, pDict, pFuncs, nFuncs, pColorSpace,
alpha);
break;
case kAxialShading:
DrawAxialShading(pBitmap, &FinalMatrix, pDict, pFuncs, nFuncs,
pColorSpace, alpha);
break;
case kRadialShading:
DrawRadialShading(pBitmap, &FinalMatrix, pDict, pFuncs, nFuncs,
pColorSpace, alpha);
break;
case kFreeFormGouraudTriangleMeshShading: {
DrawFreeGouraudShading(pBitmap, &FinalMatrix,
ToStream(pPattern->m_pShadingObj), pFuncs, nFuncs,
pColorSpace, alpha);
} break;
case kLatticeFormGouraudTriangleMeshShading: {
DrawLatticeGouraudShading(pBitmap, &FinalMatrix,
ToStream(pPattern->m_pShadingObj), pFuncs,
nFuncs, pColorSpace, alpha);
} break;
case kCoonsPatchMeshShading:
case kTensorProductPatchMeshShading: {
DrawCoonPatchMeshes(
pPattern->m_ShadingType == kTensorProductPatchMeshShading, pBitmap,
&FinalMatrix, ToStream(pPattern->m_pShadingObj), pFuncs, nFuncs,
pColorSpace, fill_mode, alpha);
} break;
}
if (bAlphaMode) {
pBitmap->LoadChannel(FXDIB_Red, pBitmap, FXDIB_Alpha);
}
if (m_Options.m_ColorMode == RENDER_COLOR_GRAY) {
pBitmap->ConvertColorScale(m_Options.m_ForeColor, m_Options.m_BackColor);
}
buffer.OutputToDevice();
}
CPDF_ColorSpace* CPDF_ColorSpace::Load(CPDF_Document* pDoc, CPDF_Object* pObj)
{
if (pObj == NULL) {
return NULL;
}
if (pObj->GetType() == PDFOBJ_NAME) {
return _CSFromName(pObj->GetString());
}
if (pObj->GetType() == PDFOBJ_STREAM) {
CPDF_Dictionary *pDict = ((CPDF_Stream *)pObj)->GetDict();
if (!pDict) {
return NULL;
}
CPDF_ColorSpace *pRet = NULL;
FX_POSITION pos = pDict->GetStartPos();
while (pos) {
CFX_ByteString bsKey;
CPDF_Object *pValue = pDict->GetNextElement(pos, bsKey);
if (pValue && pValue->GetType() == PDFOBJ_NAME) {
pRet = _CSFromName(pValue->GetString());
}
if (pRet) {
return pRet;
}
}
return NULL;
}
if (pObj->GetType() != PDFOBJ_ARRAY) {
return NULL;
}
CPDF_Array* pArray = (CPDF_Array*)pObj;
if (pArray->GetCount() == 0) {
return NULL;
}
CPDF_Object *pFamilyObj = pArray->GetElementValue(0);
if (!pFamilyObj) {
return NULL;
}
CFX_ByteString familyname = pFamilyObj->GetString();
if (pArray->GetCount() == 1) {
return _CSFromName(familyname);
}
CPDF_ColorSpace* pCS = NULL;
FX_DWORD id = familyname.GetID();
if (id == FXBSTR_ID('C', 'a', 'l', 'G')) {
pCS = new CPDF_CalGray(pDoc);
} else if (id == FXBSTR_ID('C', 'a', 'l', 'R')) {
pCS = new CPDF_CalRGB(pDoc);
} else if (id == FXBSTR_ID('L', 'a', 'b', 0)) {
pCS = new CPDF_LabCS(pDoc);
} else if (id == FXBSTR_ID('I', 'C', 'C', 'B')) {
pCS = new CPDF_ICCBasedCS(pDoc);
} else if (id == FXBSTR_ID('I', 'n', 'd', 'e') || id == FXBSTR_ID('I', 0, 0, 0)) {
pCS = new CPDF_IndexedCS(pDoc);
} else if (id == FXBSTR_ID('S', 'e', 'p', 'a')) {
pCS = new CPDF_SeparationCS(pDoc);
} else if (id == FXBSTR_ID('D', 'e', 'v', 'i')) {
pCS = new CPDF_DeviceNCS(pDoc);
} else if (id == FXBSTR_ID('P', 'a', 't', 't')) {
pCS = new CPDF_PatternCS(pDoc);
} else {
return NULL;
}
pCS->m_pArray = pArray;
if (!pCS->v_Load(pDoc, pArray)) {
pCS->ReleaseCS();
return NULL;
}
return pCS;
}
FX_BOOL CPDF_ImageRenderer::StartRenderDIBSource() {
if (m_Loader.m_pBitmap == NULL) {
return FALSE;
}
m_BitmapAlpha = 255;
const CPDF_GeneralStateData* pGeneralState = m_pImageObject->m_GeneralState;
if (pGeneralState) {
m_BitmapAlpha = FXSYS_round(pGeneralState->m_FillAlpha * 255);
}
m_pDIBSource = m_Loader.m_pBitmap;
if (m_pRenderStatus->m_Options.m_ColorMode == RENDER_COLOR_ALPHA &&
m_Loader.m_pMask == NULL) {
return StartBitmapAlpha();
}
if (pGeneralState && pGeneralState->m_pTR) {
if (!pGeneralState->m_pTransferFunc) {
((CPDF_GeneralStateData*)pGeneralState)->m_pTransferFunc =
m_pRenderStatus->GetTransferFunc(pGeneralState->m_pTR);
}
if (pGeneralState->m_pTransferFunc &&
!pGeneralState->m_pTransferFunc->m_bIdentity) {
m_pDIBSource = m_Loader.m_pBitmap =
pGeneralState->m_pTransferFunc->TranslateImage(m_Loader.m_pBitmap,
!m_Loader.m_bCached);
if (m_Loader.m_bCached && m_Loader.m_pMask) {
m_Loader.m_pMask = m_Loader.m_pMask->Clone();
}
m_Loader.m_bCached = FALSE;
}
}
m_FillArgb = 0;
m_bPatternColor = FALSE;
m_pPattern = NULL;
if (m_pDIBSource->IsAlphaMask()) {
CPDF_Color* pColor = m_pImageObject->m_ColorState.GetFillColor();
if (pColor && pColor->IsPattern()) {
m_pPattern = pColor->GetPattern();
if (m_pPattern != NULL) {
m_bPatternColor = TRUE;
}
}
m_FillArgb = m_pRenderStatus->GetFillArgb(m_pImageObject);
} else if (m_pRenderStatus->m_Options.m_ColorMode == RENDER_COLOR_GRAY) {
m_pClone = m_pDIBSource->Clone();
m_pClone->ConvertColorScale(m_pRenderStatus->m_Options.m_BackColor,
m_pRenderStatus->m_Options.m_ForeColor);
m_pDIBSource = m_pClone;
}
m_Flags = 0;
if (m_pRenderStatus->m_Options.m_Flags & RENDER_FORCE_DOWNSAMPLE) {
m_Flags |= RENDER_FORCE_DOWNSAMPLE;
} else if (m_pRenderStatus->m_Options.m_Flags & RENDER_FORCE_HALFTONE) {
m_Flags |= RENDER_FORCE_HALFTONE;
}
if (m_pRenderStatus->m_pDevice->GetDeviceClass() != FXDC_DISPLAY) {
CPDF_Object* pFilters =
m_pImageObject->m_pImage->GetStream()->GetDict()->GetElementValue(
FX_BSTRC("Filter"));
if (pFilters) {
if (pFilters->IsName()) {
CFX_ByteStringC bsDecodeType = pFilters->GetConstString();
if (bsDecodeType == FX_BSTRC("DCTDecode") ||
bsDecodeType == FX_BSTRC("JPXDecode")) {
m_Flags |= FXRENDER_IMAGE_LOSSY;
}
} else if (CPDF_Array* pArray = pFilters->AsArray()) {
for (FX_DWORD i = 0; i < pArray->GetCount(); i++) {
CFX_ByteStringC bsDecodeType = pArray->GetConstString(i);
if (bsDecodeType == FX_BSTRC("DCTDecode") ||
bsDecodeType == FX_BSTRC("JPXDecode")) {
m_Flags |= FXRENDER_IMAGE_LOSSY;
break;
}
}
}
}
}
if (m_pRenderStatus->m_Options.m_Flags & RENDER_NOIMAGESMOOTH) {
m_Flags |= FXDIB_NOSMOOTH;
} else if (m_pImageObject->m_pImage->IsInterpol()) {
m_Flags |= FXDIB_INTERPOL;
}
if (m_Loader.m_pMask) {
return DrawMaskedImage();
}
if (m_bPatternColor) {
return DrawPatternImage(m_pObj2Device);
}
if (m_BitmapAlpha == 255 && pGeneralState && pGeneralState->m_FillOP &&
pGeneralState->m_OPMode == 0 &&
pGeneralState->m_BlendType == FXDIB_BLEND_NORMAL &&
pGeneralState->m_StrokeAlpha == 1 && pGeneralState->m_FillAlpha == 1) {
CPDF_Document* pDocument = NULL;
CPDF_Page* pPage = NULL;
if (m_pRenderStatus->m_pContext->m_pPageCache) {
pPage = m_pRenderStatus->m_pContext->m_pPageCache->GetPage();
pDocument = pPage->m_pDocument;
} else {
pDocument = m_pImageObject->m_pImage->GetDocument();
}
CPDF_Dictionary* pPageResources = pPage ? pPage->m_pPageResources : NULL;
CPDF_Object* pCSObj =
m_pImageObject->m_pImage->GetStream()->GetDict()->GetElementValue(
FX_BSTRC("ColorSpace"));
CPDF_ColorSpace* pColorSpace =
pDocument->LoadColorSpace(pCSObj, pPageResources);
if (pColorSpace) {
int format = pColorSpace->GetFamily();
if (format == PDFCS_DEVICECMYK || format == PDFCS_SEPARATION ||
format == PDFCS_DEVICEN) {
m_BlendType = FXDIB_BLEND_DARKEN;
}
pDocument->GetPageData()->ReleaseColorSpace(pCSObj);
}
}
return StartDIBSource();
}
CFX_DIBitmap* CPDF_RenderStatus::LoadSMask(CPDF_Dictionary* pSMaskDict,
FX_RECT* pClipRect,
const CFX_AffineMatrix* pMatrix) {
if (pSMaskDict == NULL) {
return NULL;
}
int width = pClipRect->right - pClipRect->left;
int height = pClipRect->bottom - pClipRect->top;
FX_BOOL bLuminosity = FALSE;
bLuminosity = pSMaskDict->GetConstString(FX_BSTRC("S")) != FX_BSTRC("Alpha");
CPDF_Stream* pGroup = pSMaskDict->GetStream(FX_BSTRC("G"));
if (pGroup == NULL) {
return NULL;
}
nonstd::unique_ptr<CPDF_Function> pFunc;
CPDF_Object* pFuncObj = pSMaskDict->GetElementValue(FX_BSTRC("TR"));
if (pFuncObj && (pFuncObj->IsDictionary() || pFuncObj->IsStream()))
pFunc.reset(CPDF_Function::Load(pFuncObj));
CFX_AffineMatrix matrix = *pMatrix;
matrix.TranslateI(-pClipRect->left, -pClipRect->top);
CPDF_Form form(m_pContext->m_pDocument, m_pContext->m_pPageResources, pGroup);
form.ParseContent(NULL, NULL, NULL, NULL);
CFX_FxgeDevice bitmap_device;
#if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_
if (!bitmap_device.Create(width, height,
bLuminosity ? FXDIB_Rgb32 : FXDIB_8bppMask)) {
return NULL;
}
#else
if (!bitmap_device.Create(width, height,
bLuminosity ? FXDIB_Rgb : FXDIB_8bppMask)) {
return NULL;
}
#endif
CFX_DIBitmap& bitmap = *bitmap_device.GetBitmap();
CPDF_Object* pCSObj = NULL;
CPDF_ColorSpace* pCS = NULL;
if (bLuminosity) {
CPDF_Array* pBC = pSMaskDict->GetArray(FX_BSTRC("BC"));
FX_ARGB back_color = 0xff000000;
if (pBC) {
CPDF_Dictionary* pDict = pGroup->GetDict();
if (pDict && pDict->GetDict(FX_BSTRC("Group")))
pCSObj =
pDict->GetDict(FX_BSTRC("Group"))->GetElementValue(FX_BSTRC("CS"));
else
pCSObj = NULL;
pCS = m_pContext->m_pDocument->LoadColorSpace(pCSObj);
if (pCS) {
FX_FLOAT R, G, B;
FX_DWORD comps = 8;
if (pCS->CountComponents() > static_cast<int32_t>(comps)) {
comps = (FX_DWORD)pCS->CountComponents();
}
CFX_FixedBufGrow<FX_FLOAT, 8> float_array(comps);
FX_FLOAT* pFloats = float_array;
FX_SAFE_DWORD num_floats = comps;
num_floats *= sizeof(FX_FLOAT);
if (!num_floats.IsValid()) {
return NULL;
}
FXSYS_memset(pFloats, 0, num_floats.ValueOrDie());
int count = pBC->GetCount() > 8 ? 8 : pBC->GetCount();
for (int i = 0; i < count; i++) {
pFloats[i] = pBC->GetNumber(i);
}
pCS->GetRGB(pFloats, R, G, B);
back_color = 0xff000000 | ((int32_t)(R * 255) << 16) |
((int32_t)(G * 255) << 8) | (int32_t)(B * 255);
m_pContext->m_pDocument->GetPageData()->ReleaseColorSpace(pCSObj);
}
}
bitmap.Clear(back_color);
} else {
bitmap.Clear(0);
}
CPDF_Dictionary* pFormResource = NULL;
if (form.m_pFormDict) {
pFormResource = form.m_pFormDict->GetDict(FX_BSTRC("Resources"));
}
CPDF_RenderOptions options;
options.m_ColorMode = bLuminosity ? RENDER_COLOR_NORMAL : RENDER_COLOR_ALPHA;
CPDF_RenderStatus status;
status.Initialize(m_pContext, &bitmap_device, NULL, NULL, NULL, NULL,
&options, 0, m_bDropObjects, pFormResource, TRUE, NULL, 0,
pCS ? pCS->GetFamily() : 0, bLuminosity);
status.RenderObjectList(&form, &matrix);
nonstd::unique_ptr<CFX_DIBitmap> pMask(new CFX_DIBitmap);
if (!pMask->Create(width, height, FXDIB_8bppMask))
return nullptr;
uint8_t* dest_buf = pMask->GetBuffer();
int dest_pitch = pMask->GetPitch();
uint8_t* src_buf = bitmap.GetBuffer();
int src_pitch = bitmap.GetPitch();
std::vector<uint8_t> transfers(256);
if (pFunc) {
CFX_FixedBufGrow<FX_FLOAT, 16> results(pFunc->CountOutputs());
for (int i = 0; i < 256; i++) {
FX_FLOAT input = (FX_FLOAT)i / 255.0f;
int nresult;
pFunc->Call(&input, 1, results, nresult);
transfers[i] = FXSYS_round(results[0] * 255);
}
} else {
for (int i = 0; i < 256; i++) {
transfers[i] = i;
}
}
if (bLuminosity) {
int Bpp = bitmap.GetBPP() / 8;
for (int row = 0; row < height; row++) {
uint8_t* dest_pos = dest_buf + row * dest_pitch;
uint8_t* src_pos = src_buf + row * src_pitch;
for (int col = 0; col < width; col++) {
*dest_pos++ = transfers[FXRGB2GRAY(src_pos[2], src_pos[1], *src_pos)];
src_pos += Bpp;
}
}
} else if (pFunc) {
int size = dest_pitch * height;
for (int i = 0; i < size; i++) {
dest_buf[i] = transfers[src_buf[i]];
}
} else {
FXSYS_memcpy(dest_buf, src_buf, dest_pitch * height);
}
return pMask.release();
}
CFX_DIBitmap* CPDF_RenderStatus::LoadSMask(CPDF_Dictionary* pSMaskDict,
FX_RECT* pClipRect, const CFX_AffineMatrix* pMatrix)
{
if (pSMaskDict == NULL) {
return NULL;
}
CFX_DIBitmap* pMask = NULL;
int width = pClipRect->right - pClipRect->left;
int height = pClipRect->bottom - pClipRect->top;
FX_BOOL bLuminosity = FALSE;
bLuminosity = pSMaskDict->GetConstString(FX_BSTRC("S")) != FX_BSTRC("Alpha");
CPDF_Stream* pGroup = pSMaskDict->GetStream(FX_BSTRC("G"));
if (pGroup == NULL) {
return NULL;
}
CPDF_Function* pFunc = NULL;
CPDF_Object* pFuncObj = pSMaskDict->GetElementValue(FX_BSTRC("TR"));
if (pFuncObj && (pFuncObj->GetType() == PDFOBJ_DICTIONARY || pFuncObj->GetType() == PDFOBJ_STREAM)) {
pFunc = CPDF_Function::Load(pFuncObj);
}
CFX_AffineMatrix matrix = *pMatrix;
matrix.TranslateI(-pClipRect->left, -pClipRect->top);
CPDF_Form form(m_pContext->m_pDocument, m_pContext->m_pPageResources, pGroup);
form.ParseContent(NULL, NULL, NULL, NULL);
CFX_FxgeDevice bitmap_device;
#if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_
if (!bitmap_device.Create(width, height, bLuminosity ? FXDIB_Rgb32 : FXDIB_8bppMask)) {
return NULL;
}
#else
if (!bitmap_device.Create(width, height, bLuminosity ? FXDIB_Rgb : FXDIB_8bppMask)) {
return NULL;
}
#endif
CFX_DIBitmap& bitmap = *bitmap_device.GetBitmap();
CPDF_Object* pCSObj = NULL;
CPDF_ColorSpace* pCS = NULL;
if (bLuminosity) {
CPDF_Array* pBC = pSMaskDict->GetArray(FX_BSTRC("BC"));
FX_ARGB back_color = 0xff000000;
if (pBC) {
pCSObj = pGroup->GetDict()->GetDict(FX_BSTRC("Group"))->GetElementValue(FX_BSTRC("CS"));
pCS = m_pContext->m_pDocument->LoadColorSpace(pCSObj);
if (pCS) {
FX_FLOAT R, G, B;
FX_DWORD num_floats = 8;
if (pCS->CountComponents() > (FX_INT32)num_floats) {
num_floats = (FX_DWORD)pCS->CountComponents();
}
CFX_FixedBufGrow<FX_FLOAT, 8> float_array(num_floats);
FX_FLOAT* pFloats = float_array;
FXSYS_memset32(pFloats, 0, num_floats * sizeof(FX_FLOAT));
int count = pBC->GetCount() > 8 ? 8 : pBC->GetCount();
for (int i = 0; i < count; i ++) {
pFloats[i] = pBC->GetNumber(i);
}
pCS->GetRGB(pFloats, R, G, B);
back_color = 0xff000000 | ((FX_INT32)(R * 255) << 16) | ((FX_INT32)(G * 255) << 8) | (FX_INT32)(B * 255);
m_pContext->m_pDocument->GetPageData()->ReleaseColorSpace(pCSObj);
}
}
bitmap.Clear(back_color);
} else {
bitmap.Clear(0);
}
CPDF_Dictionary* pFormResource = NULL;
if (form.m_pFormDict) {
pFormResource = form.m_pFormDict->GetDict(FX_BSTRC("Resources"));
}
CPDF_RenderOptions options;
options.m_ColorMode = bLuminosity ? RENDER_COLOR_NORMAL : RENDER_COLOR_ALPHA;
CPDF_RenderStatus status;
status.Initialize(m_Level + 1, m_pContext, &bitmap_device, NULL, NULL, NULL, NULL,
&options, 0, m_bDropObjects, pFormResource, TRUE, NULL, 0, pCS ? pCS->GetFamily() : 0, bLuminosity);
status.RenderObjectList(&form, &matrix);
pMask = FX_NEW CFX_DIBitmap;
if (!pMask->Create(width, height, FXDIB_8bppMask)) {
delete pMask;
return NULL;
}
FX_LPBYTE dest_buf = pMask->GetBuffer();
int dest_pitch = pMask->GetPitch();
FX_LPBYTE src_buf = bitmap.GetBuffer();
int src_pitch = bitmap.GetPitch();
FX_LPBYTE pTransfer = FX_Alloc(FX_BYTE, 256);
if (pFunc) {
CFX_FixedBufGrow<FX_FLOAT, 16> results(pFunc->CountOutputs());
for (int i = 0; i < 256; i ++) {
FX_FLOAT input = (FX_FLOAT)i / 255.0f;
int nresult;
pFunc->Call(&input, 1, results, nresult);
pTransfer[i] = FXSYS_round(results[0] * 255);
}
} else {
for (int i = 0; i < 256; i ++) {
pTransfer[i] = i;
}
}
if (bLuminosity) {
int Bpp = bitmap.GetBPP() / 8;
for (int row = 0; row < height; row ++) {
FX_LPBYTE dest_pos = dest_buf + row * dest_pitch;
FX_LPBYTE src_pos = src_buf + row * src_pitch;
for (int col = 0; col < width; col ++) {
*dest_pos ++ = pTransfer[FXRGB2GRAY(src_pos[2], src_pos[1], *src_pos)];
src_pos += Bpp;
}
}
} else if (pFunc) {
int size = dest_pitch * height;
for (int i = 0; i < size; i ++) {
dest_buf[i] = pTransfer[src_buf[i]];
}
} else {
FXSYS_memcpy32(dest_buf, src_buf, dest_pitch * height);
}
if (pFunc) {
delete pFunc;
}
FX_Free(pTransfer);
return pMask;
}
FX_BOOL CPDF_RenderStatus::ProcessTransparency(CPDF_PageObject* pPageObj,
const CFX_Matrix* pObj2Device) {
#if defined _SKIA_SUPPORT_
DebugVerifyDeviceIsPreMultiplied();
#endif
int blend_type = pPageObj->m_GeneralState.GetBlendType();
if (blend_type == FXDIB_BLEND_UNSUPPORTED)
return TRUE;
CPDF_Dictionary* pSMaskDict =
ToDictionary(pPageObj->m_GeneralState.GetSoftMask());
if (pSMaskDict) {
if (pPageObj->IsImage() &&
pPageObj->AsImage()->GetImage()->GetDict()->KeyExist("SMask")) {
pSMaskDict = nullptr;
}
}
CPDF_Dictionary* pFormResource = nullptr;
FX_FLOAT group_alpha = 1.0f;
int Transparency = m_Transparency;
FX_BOOL bGroupTransparent = FALSE;
if (pPageObj->IsForm()) {
const CPDF_FormObject* pFormObj = pPageObj->AsForm();
group_alpha = pFormObj->m_GeneralState.GetFillAlpha();
Transparency = pFormObj->m_pForm->m_Transparency;
bGroupTransparent = !!(Transparency & PDFTRANS_ISOLATED);
if (pFormObj->m_pForm->m_pFormDict) {
pFormResource = pFormObj->m_pForm->m_pFormDict->GetDictBy("Resources");
}
}
bool bTextClip =
(pPageObj->m_ClipPath && pPageObj->m_ClipPath.GetTextCount() &&
m_pDevice->GetDeviceClass() == FXDC_DISPLAY &&
!(m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_SOFT_CLIP));
if ((m_Options.m_Flags & RENDER_OVERPRINT) && pPageObj->IsImage() &&
pPageObj->m_GeneralState.GetFillOP() &&
pPageObj->m_GeneralState.GetStrokeOP()) {
CPDF_Document* pDocument = nullptr;
CPDF_Page* pPage = nullptr;
if (m_pContext->GetPageCache()) {
pPage = m_pContext->GetPageCache()->GetPage();
pDocument = pPage->m_pDocument;
} else {
pDocument = pPageObj->AsImage()->GetImage()->GetDocument();
}
CPDF_Dictionary* pPageResources = pPage ? pPage->m_pPageResources : nullptr;
CPDF_Object* pCSObj = pPageObj->AsImage()
->GetImage()
->GetStream()
->GetDict()
->GetDirectObjectBy("ColorSpace");
CPDF_ColorSpace* pColorSpace =
pDocument->LoadColorSpace(pCSObj, pPageResources);
if (pColorSpace) {
int format = pColorSpace->GetFamily();
if (format == PDFCS_DEVICECMYK || format == PDFCS_SEPARATION ||
format == PDFCS_DEVICEN) {
blend_type = FXDIB_BLEND_DARKEN;
}
pDocument->GetPageData()->ReleaseColorSpace(pCSObj);
}
}
if (!pSMaskDict && group_alpha == 1.0f && blend_type == FXDIB_BLEND_NORMAL &&
!bTextClip && !bGroupTransparent) {
return FALSE;
}
bool isolated = !!(Transparency & PDFTRANS_ISOLATED);
if (m_bPrint) {
FX_BOOL bRet = FALSE;
int rendCaps = m_pDevice->GetRenderCaps();
if (!((Transparency & PDFTRANS_ISOLATED) || pSMaskDict || bTextClip) &&
(rendCaps & FXRC_BLEND_MODE)) {
int oldBlend = m_curBlend;
m_curBlend = blend_type;
bRet = DrawObjWithBlend(pPageObj, pObj2Device);
m_curBlend = oldBlend;
}
if (!bRet) {
DrawObjWithBackground(pPageObj, pObj2Device);
}
return TRUE;
}
FX_RECT rect = pPageObj->GetBBox(pObj2Device);
rect.Intersect(m_pDevice->GetClipBox());
if (rect.IsEmpty()) {
return TRUE;
}
CFX_Matrix deviceCTM = m_pDevice->GetCTM();
FX_FLOAT scaleX = FXSYS_fabs(deviceCTM.a);
FX_FLOAT scaleY = FXSYS_fabs(deviceCTM.d);
int width = FXSYS_round((FX_FLOAT)rect.Width() * scaleX);
int height = FXSYS_round((FX_FLOAT)rect.Height() * scaleY);
CFX_FxgeDevice bitmap_device;
std::unique_ptr<CFX_DIBitmap> oriDevice;
if (!isolated && (m_pDevice->GetRenderCaps() & FXRC_GET_BITS)) {
oriDevice.reset(new CFX_DIBitmap);
if (!m_pDevice->CreateCompatibleBitmap(oriDevice.get(), width, height))
return TRUE;
m_pDevice->GetDIBits(oriDevice.get(), rect.left, rect.top);
}
if (!bitmap_device.Create(width, height, FXDIB_Argb, oriDevice.get()))
return TRUE;
CFX_DIBitmap* bitmap = bitmap_device.GetBitmap();
bitmap->Clear(0);
CFX_Matrix new_matrix = *pObj2Device;
new_matrix.TranslateI(-rect.left, -rect.top);
new_matrix.Scale(scaleX, scaleY);
std::unique_ptr<CFX_DIBitmap> pTextMask;
if (bTextClip) {
pTextMask.reset(new CFX_DIBitmap);
if (!pTextMask->Create(width, height, FXDIB_8bppMask))
return TRUE;
pTextMask->Clear(0);
CFX_FxgeDevice text_device;
text_device.Attach(pTextMask.get(), false, nullptr, false);
for (uint32_t i = 0; i < pPageObj->m_ClipPath.GetTextCount(); i++) {
CPDF_TextObject* textobj = pPageObj->m_ClipPath.GetText(i);
if (!textobj) {
break;
}
CFX_Matrix text_matrix;
textobj->GetTextMatrix(&text_matrix);
CPDF_TextRenderer::DrawTextPath(
&text_device, textobj->m_nChars, textobj->m_pCharCodes,
textobj->m_pCharPos, textobj->m_TextState.GetFont(),
textobj->m_TextState.GetFontSize(), &text_matrix, &new_matrix,
textobj->m_GraphState.GetObject(), (FX_ARGB)-1, 0, nullptr, 0);
}
}
CPDF_RenderStatus bitmap_render;
bitmap_render.Initialize(m_pContext, &bitmap_device, nullptr, m_pStopObj,
nullptr, nullptr, &m_Options, 0, m_bDropObjects,
pFormResource, TRUE);
bitmap_render.ProcessObjectNoClip(pPageObj, &new_matrix);
m_bStopped = bitmap_render.m_bStopped;
if (pSMaskDict) {
CFX_Matrix smask_matrix = *pPageObj->m_GeneralState.GetSMaskMatrix();
smask_matrix.Concat(*pObj2Device);
std::unique_ptr<CFX_DIBSource> pSMaskSource(
LoadSMask(pSMaskDict, &rect, &smask_matrix));
if (pSMaskSource)
bitmap->MultiplyAlpha(pSMaskSource.get());
}
if (pTextMask) {
bitmap->MultiplyAlpha(pTextMask.get());
pTextMask.reset();
}
int32_t blitAlpha = 255;
if (Transparency & PDFTRANS_GROUP && group_alpha != 1.0f) {
blitAlpha = (int32_t)(group_alpha * 255);
#ifndef _SKIA_SUPPORT_
bitmap->MultiplyAlpha(blitAlpha);
blitAlpha = 255;
#endif
}
Transparency = m_Transparency;
if (pPageObj->IsForm()) {
Transparency |= PDFTRANS_GROUP;
}
CompositeDIBitmap(bitmap, rect.left, rect.top, 0, blitAlpha, blend_type,
Transparency);
#if defined _SKIA_SUPPORT_
DebugVerifyDeviceIsPreMultiplied();
#endif
return TRUE;
}
CPDF_ShadingPattern::~CPDF_ShadingPattern() {
CPDF_ColorSpace* pCS = m_pCountedCS ? m_pCountedCS->get() : nullptr;
if (pCS && m_pDocument)
m_pDocument->GetPageData()->ReleaseColorSpace(pCS->GetArray());
}
FX_BOOL CPDF_ICCBasedCS::v_Load(CPDF_Document* pDoc, CPDF_Array* pArray)
{
CPDF_Stream* pStream = pArray->GetStream(1);
if (pStream == NULL) {
return FALSE;
}
m_pProfile = pDoc->LoadIccProfile(pStream);
if (!m_pProfile) {
return FALSE;
}
m_nComponents = m_pProfile->GetComponents(); //Try using the nComponents from ICC profile
CPDF_Dictionary* pDict = pStream->GetDict();
if (m_pProfile->m_pTransform == NULL) { // No valid ICC profile or using sRGB
CPDF_Object* pAlterCSObj = pDict ? pDict->GetElementValue(FX_BSTRC("Alternate")) : NULL;
if (pAlterCSObj) {
CPDF_ColorSpace* pAlterCS = CPDF_ColorSpace::Load(pDoc, pAlterCSObj);
if (pAlterCS) {
if (m_nComponents == 0) { // NO valid ICC profile
if (pAlterCS->CountComponents() > 0) { // Use Alternative colorspace
m_nComponents = pAlterCS->CountComponents();
m_pAlterCS = pAlterCS;
m_bOwn = TRUE;
}
else { // No valid alternative colorspace
pAlterCS->ReleaseCS();
int32_t nDictComponents = pDict ? pDict->GetInteger(FX_BSTRC("N")) : 0;
if (nDictComponents != 1 && nDictComponents != 3 && nDictComponents != 4) {
return FALSE;
}
m_nComponents = nDictComponents;
}
}
else { // Using sRGB
if (pAlterCS->CountComponents() != m_nComponents) {
pAlterCS->ReleaseCS();
}
else {
m_pAlterCS = pAlterCS;
m_bOwn = TRUE;
}
}
}
}
if (!m_pAlterCS) {
if (m_nComponents == 1) {
m_pAlterCS = GetStockCS(PDFCS_DEVICEGRAY);
}
else if (m_nComponents == 3) {
m_pAlterCS = GetStockCS(PDFCS_DEVICERGB);
}
else if (m_nComponents == 4) {
m_pAlterCS = GetStockCS(PDFCS_DEVICECMYK);
}
}
}
CPDF_Array* pRanges = pDict->GetArray(FX_BSTRC("Range"));
m_pRanges = FX_Alloc2D(FX_FLOAT, m_nComponents, 2);
for (int i = 0; i < m_nComponents * 2; i ++) {
if (pRanges) {
m_pRanges[i] = pRanges->GetNumber(i);
} else if (i % 2) {
m_pRanges[i] = 1.0f;
} else {
m_pRanges[i] = 0;
}
}
return TRUE;
}