summaryrefslogtreecommitdiff
path: root/core/fpdfapi/page/cpdf_colorspace.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'core/fpdfapi/page/cpdf_colorspace.cpp')
-rw-r--r--core/fpdfapi/page/cpdf_colorspace.cpp122
1 files changed, 62 insertions, 60 deletions
diff --git a/core/fpdfapi/page/cpdf_colorspace.cpp b/core/fpdfapi/page/cpdf_colorspace.cpp
index d7fb18edd7..aa664d4e0f 100644
--- a/core/fpdfapi/page/cpdf_colorspace.cpp
+++ b/core/fpdfapi/page/cpdf_colorspace.cpp
@@ -112,8 +112,8 @@ class CPDF_CalGray : public CPDF_ColorSpace {
// CPDF_ColorSpace:
uint32_t v_Load(CPDF_Document* pDoc,
- CPDF_Array* pArray,
- std::set<CPDF_Object*>* pVisited) override;
+ const CPDF_Array* pArray,
+ std::set<const CPDF_Object*>* pVisited) override;
bool GetRGB(const float* pBuf, float* R, float* G, float* B) const override;
void TranslateImageLine(uint8_t* pDestBuf,
const uint8_t* pSrcBuf,
@@ -136,8 +136,8 @@ class CPDF_CalRGB : public CPDF_ColorSpace {
~CPDF_CalRGB() override {}
uint32_t v_Load(CPDF_Document* pDoc,
- CPDF_Array* pArray,
- std::set<CPDF_Object*>* pVisited) override;
+ const CPDF_Array* pArray,
+ std::set<const CPDF_Object*>* pVisited) override;
bool GetRGB(const float* pBuf, float* R, float* G, float* B) const override;
@@ -166,8 +166,8 @@ class CPDF_LabCS : public CPDF_ColorSpace {
~CPDF_LabCS() override {}
uint32_t v_Load(CPDF_Document* pDoc,
- CPDF_Array* pArray,
- std::set<CPDF_Object*>* pVisited) override;
+ const CPDF_Array* pArray,
+ std::set<const CPDF_Object*>* pVisited) override;
void GetDefaultValue(int iComponent,
float* value,
@@ -197,8 +197,8 @@ class CPDF_ICCBasedCS : public CPDF_ColorSpace {
// CPDF_ColorSpace:
uint32_t v_Load(CPDF_Document* pDoc,
- CPDF_Array* pArray,
- std::set<CPDF_Object*>* pVisited) override;
+ const CPDF_Array* pArray,
+ std::set<const CPDF_Object*>* pVisited) override;
bool GetRGB(const float* pBuf, float* R, float* G, float* B) const override;
void EnableStdConversion(bool bEnabled) override;
void TranslateImageLine(uint8_t* pDestBuf,
@@ -213,12 +213,12 @@ class CPDF_ICCBasedCS : public CPDF_ColorSpace {
private:
// If no valid ICC profile or using sRGB, try looking for an alternate.
bool FindAlternateProfile(CPDF_Document* pDoc,
- CPDF_Dictionary* pDict,
- std::set<CPDF_Object*>* pVisited,
+ const CPDF_Dictionary* pDict,
+ std::set<const CPDF_Object*>* pVisited,
uint32_t nExpectedComponents);
static CPDF_ColorSpace* GetStockAlternateProfile(uint32_t nComponents);
static bool IsValidComponents(int32_t nComps);
- static std::vector<float> GetRanges(CPDF_Dictionary* pDict,
+ static std::vector<float> GetRanges(const CPDF_Dictionary* pDict,
uint32_t nComponents);
MaybeOwned<CPDF_ColorSpace> m_pAlterCS;
@@ -233,8 +233,8 @@ class CPDF_IndexedCS : public CPDF_ColorSpace {
~CPDF_IndexedCS() override;
uint32_t v_Load(CPDF_Document* pDoc,
- CPDF_Array* pArray,
- std::set<CPDF_Object*>* pVisited) override;
+ const CPDF_Array* pArray,
+ std::set<const CPDF_Object*>* pVisited) override;
bool GetRGB(const float* pBuf, float* R, float* G, float* B) const override;
@@ -242,7 +242,7 @@ class CPDF_IndexedCS : public CPDF_ColorSpace {
private:
CPDF_ColorSpace* m_pBaseCS = nullptr;
- UnownedPtr<CPDF_CountedColorSpace> m_pCountedBaseCS;
+ UnownedPtr<const CPDF_CountedColorSpace> m_pCountedBaseCS;
uint32_t m_nBaseComponents = 0;
int m_MaxIndex = 0;
ByteString m_Table;
@@ -260,14 +260,14 @@ class CPDF_SeparationCS : public CPDF_ColorSpace {
float* min,
float* max) const override;
uint32_t v_Load(CPDF_Document* pDoc,
- CPDF_Array* pArray,
- std::set<CPDF_Object*>* pVisited) override;
+ const CPDF_Array* pArray,
+ std::set<const CPDF_Object*>* pVisited) override;
bool GetRGB(const float* pBuf, float* R, float* G, float* B) const override;
void EnableStdConversion(bool bEnabled) override;
private:
std::unique_ptr<CPDF_ColorSpace> m_pAltCS;
- std::unique_ptr<CPDF_Function> m_pFunc;
+ std::unique_ptr<const CPDF_Function> m_pFunc;
enum { None, All, Colorant } m_Type;
};
@@ -282,14 +282,14 @@ class CPDF_DeviceNCS : public CPDF_ColorSpace {
float* min,
float* max) const override;
uint32_t v_Load(CPDF_Document* pDoc,
- CPDF_Array* pArray,
- std::set<CPDF_Object*>* pVisited) override;
+ const CPDF_Array* pArray,
+ std::set<const CPDF_Object*>* pVisited) override;
bool GetRGB(const float* pBuf, float* R, float* G, float* B) const override;
void EnableStdConversion(bool bEnabled) override;
private:
std::unique_ptr<CPDF_ColorSpace> m_pAltCS;
- std::unique_ptr<CPDF_Function> m_pFunc;
+ std::unique_ptr<const CPDF_Function> m_pFunc;
};
class Vector_3by1 {
@@ -437,27 +437,27 @@ CPDF_ColorSpace* CPDF_ColorSpace::GetStockCS(int family) {
// static
std::unique_ptr<CPDF_ColorSpace> CPDF_ColorSpace::Load(CPDF_Document* pDoc,
CPDF_Object* pObj) {
- std::set<CPDF_Object*> visited;
+ std::set<const CPDF_Object*> visited;
return Load(pDoc, pObj, &visited);
}
// static
std::unique_ptr<CPDF_ColorSpace> CPDF_ColorSpace::Load(
CPDF_Document* pDoc,
- CPDF_Object* pObj,
- std::set<CPDF_Object*>* pVisited) {
+ const CPDF_Object* pObj,
+ std::set<const CPDF_Object*>* pVisited) {
if (!pObj)
return nullptr;
if (pdfium::ContainsKey(*pVisited, pObj))
return nullptr;
- pdfium::ScopedSetInsertion<CPDF_Object*> insertion(pVisited, pObj);
+ pdfium::ScopedSetInsertion<const CPDF_Object*> insertion(pVisited, pObj);
if (pObj->IsName())
return pdfium::WrapUnique(ColorspaceFromName(pObj->GetString()));
- if (CPDF_Stream* pStream = pObj->AsStream()) {
+ if (const CPDF_Stream* pStream = pObj->AsStream()) {
CPDF_Dictionary* pDict = pStream->GetDict();
if (!pDict)
return nullptr;
@@ -473,11 +473,11 @@ std::unique_ptr<CPDF_ColorSpace> CPDF_ColorSpace::Load(
return nullptr;
}
- CPDF_Array* pArray = pObj->AsArray();
+ const CPDF_Array* pArray = pObj->AsArray();
if (!pArray || pArray->IsEmpty())
return nullptr;
- CPDF_Object* pFamilyObj = pArray->GetDirectObjectAt(0);
+ const CPDF_Object* pFamilyObj = pArray->GetDirectObjectAt(0);
if (!pFamilyObj)
return nullptr;
@@ -627,9 +627,9 @@ CPDF_CalGray::CPDF_CalGray(CPDF_Document* pDoc)
: CPDF_ColorSpace(pDoc, PDFCS_CALGRAY) {}
uint32_t CPDF_CalGray::v_Load(CPDF_Document* pDoc,
- CPDF_Array* pArray,
- std::set<CPDF_Object*>* pVisited) {
- CPDF_Dictionary* pDict = pArray->GetDictAt(1);
+ const CPDF_Array* pArray,
+ std::set<const CPDF_Object*>* pVisited) {
+ const CPDF_Dictionary* pDict = pArray->GetDictAt(1);
if (!pDict)
return 0;
@@ -671,9 +671,9 @@ CPDF_CalRGB::CPDF_CalRGB(CPDF_Document* pDoc)
: CPDF_ColorSpace(pDoc, PDFCS_CALRGB) {}
uint32_t CPDF_CalRGB::v_Load(CPDF_Document* pDoc,
- CPDF_Array* pArray,
- std::set<CPDF_Object*>* pVisited) {
- CPDF_Dictionary* pDict = pArray->GetDictAt(1);
+ const CPDF_Array* pArray,
+ std::set<const CPDF_Object*>* pVisited) {
+ const CPDF_Dictionary* pDict = pArray->GetDictAt(1);
if (!pDict)
return 0;
@@ -682,7 +682,7 @@ uint32_t CPDF_CalRGB::v_Load(CPDF_Document* pDoc,
GetBlackPoint(pDict, m_BlackPoint);
- CPDF_Array* pParam = pDict->GetArrayFor("Gamma");
+ const CPDF_Array* pParam = pDict->GetArrayFor("Gamma");
if (pParam) {
m_bGamma = true;
for (size_t i = 0; i < FX_ArraySize(m_Gamma); ++i)
@@ -775,9 +775,9 @@ void CPDF_LabCS::GetDefaultValue(int iComponent,
}
uint32_t CPDF_LabCS::v_Load(CPDF_Document* pDoc,
- CPDF_Array* pArray,
- std::set<CPDF_Object*>* pVisited) {
- CPDF_Dictionary* pDict = pArray->GetDictAt(1);
+ const CPDF_Array* pArray,
+ std::set<const CPDF_Object*>* pVisited) {
+ const CPDF_Dictionary* pDict = pArray->GetDictAt(1);
if (!pDict)
return 0;
@@ -786,7 +786,7 @@ uint32_t CPDF_LabCS::v_Load(CPDF_Document* pDoc,
GetBlackPoint(pDict, m_BlackPoint);
- CPDF_Array* pParam = pDict->GetArrayFor("Range");
+ const CPDF_Array* pParam = pDict->GetArrayFor("Range");
static constexpr float kDefaultRanges[kRangesCount] = {-100.0f, 100.0f,
-100.0f, 100.0f};
static_assert(FX_ArraySize(kDefaultRanges) == FX_ArraySize(m_Ranges),
@@ -863,8 +863,8 @@ CPDF_ICCBasedCS::~CPDF_ICCBasedCS() {
}
uint32_t CPDF_ICCBasedCS::v_Load(CPDF_Document* pDoc,
- CPDF_Array* pArray,
- std::set<CPDF_Object*>* pVisited) {
+ const CPDF_Array* pArray,
+ std::set<const CPDF_Object*>* pVisited) {
CPDF_Stream* pStream = pArray->GetStreamAt(1);
if (!pStream)
return 0;
@@ -872,7 +872,7 @@ uint32_t CPDF_ICCBasedCS::v_Load(CPDF_Document* pDoc,
// The PDF 1.7 spec says the number of components must be valid. While some
// PDF viewers tolerate invalid values, Acrobat does not, so be consistent
// with Acrobat and reject bad values.
- CPDF_Dictionary* pDict = pStream->GetDict();
+ const CPDF_Dictionary* pDict = pStream->GetDict();
int32_t nDictComponents = pDict ? pDict->GetIntegerFor("N") : 0;
if (!IsValidComponents(nDictComponents))
return 0;
@@ -1010,11 +1010,12 @@ void CPDF_ICCBasedCS::TranslateImageLine(uint8_t* pDestBuf,
}
}
-bool CPDF_ICCBasedCS::FindAlternateProfile(CPDF_Document* pDoc,
- CPDF_Dictionary* pDict,
- std::set<CPDF_Object*>* pVisited,
- uint32_t nExpectedComponents) {
- CPDF_Object* pAlterCSObj = pDict->GetDirectObjectFor("Alternate");
+bool CPDF_ICCBasedCS::FindAlternateProfile(
+ CPDF_Document* pDoc,
+ const CPDF_Dictionary* pDict,
+ std::set<const CPDF_Object*>* pVisited,
+ uint32_t nExpectedComponents) {
+ const CPDF_Object* pAlterCSObj = pDict->GetDirectObjectFor("Alternate");
if (!pAlterCSObj)
return false;
@@ -1051,13 +1052,13 @@ bool CPDF_ICCBasedCS::IsValidComponents(int32_t nComps) {
}
// static
-std::vector<float> CPDF_ICCBasedCS::GetRanges(CPDF_Dictionary* pDict,
+std::vector<float> CPDF_ICCBasedCS::GetRanges(const CPDF_Dictionary* pDict,
uint32_t nComponents) {
ASSERT(IsValidComponents(nComponents));
std::vector<float> ranges;
ranges.reserve(nComponents * 2);
- CPDF_Array* pRanges = pDict->GetArrayFor("Range");
+ const CPDF_Array* pRanges = pDict->GetArrayFor("Range");
if (pRanges) {
for (uint32_t i = 0; i < nComponents * 2; i++) {
ranges.push_back(pRanges->GetNumberAt(i));
@@ -1076,7 +1077,8 @@ CPDF_IndexedCS::CPDF_IndexedCS(CPDF_Document* pDoc)
CPDF_IndexedCS::~CPDF_IndexedCS() {
FX_Free(m_pCompMinMax);
- CPDF_ColorSpace* pCS = m_pCountedBaseCS ? m_pCountedBaseCS->get() : nullptr;
+ const CPDF_ColorSpace* pCS =
+ m_pCountedBaseCS ? m_pCountedBaseCS->get() : nullptr;
if (pCS && m_pDocument) {
auto* pPageData = m_pDocument->GetPageData();
if (pPageData)
@@ -1085,12 +1087,12 @@ CPDF_IndexedCS::~CPDF_IndexedCS() {
}
uint32_t CPDF_IndexedCS::v_Load(CPDF_Document* pDoc,
- CPDF_Array* pArray,
- std::set<CPDF_Object*>* pVisited) {
+ const CPDF_Array* pArray,
+ std::set<const CPDF_Object*>* pVisited) {
if (pArray->GetCount() < 4)
return 0;
- CPDF_Object* pBaseObj = pArray->GetDirectObjectAt(1);
+ const CPDF_Object* pBaseObj = pArray->GetDirectObjectAt(1);
if (pBaseObj == m_pArray)
return 0;
@@ -1181,8 +1183,8 @@ void CPDF_SeparationCS::GetDefaultValue(int iComponent,
}
uint32_t CPDF_SeparationCS::v_Load(CPDF_Document* pDoc,
- CPDF_Array* pArray,
- std::set<CPDF_Object*>* pVisited) {
+ const CPDF_Array* pArray,
+ std::set<const CPDF_Object*>* pVisited) {
ByteString name = pArray->GetStringAt(1);
if (name == "None") {
m_Type = None;
@@ -1190,7 +1192,7 @@ uint32_t CPDF_SeparationCS::v_Load(CPDF_Document* pDoc,
}
m_Type = Colorant;
- CPDF_Object* pAltCS = pArray->GetDirectObjectAt(2);
+ const CPDF_Object* pAltCS = pArray->GetDirectObjectAt(2);
if (pAltCS == m_pArray)
return 0;
@@ -1201,7 +1203,7 @@ uint32_t CPDF_SeparationCS::v_Load(CPDF_Document* pDoc,
if (m_pAltCS->IsSpecial())
return 0;
- CPDF_Object* pFuncObj = pArray->GetDirectObjectAt(3);
+ const CPDF_Object* pFuncObj = pArray->GetDirectObjectAt(3);
if (pFuncObj && !pFuncObj->IsName()) {
auto pFunc = CPDF_Function::Load(pFuncObj);
if (pFunc && pFunc->CountOutputs() >= m_pAltCS->CountComponents())
@@ -1252,13 +1254,13 @@ void CPDF_DeviceNCS::GetDefaultValue(int iComponent,
}
uint32_t CPDF_DeviceNCS::v_Load(CPDF_Document* pDoc,
- CPDF_Array* pArray,
- std::set<CPDF_Object*>* pVisited) {
- CPDF_Array* pObj = ToArray(pArray->GetDirectObjectAt(1));
+ const CPDF_Array* pArray,
+ std::set<const CPDF_Object*>* pVisited) {
+ const CPDF_Array* pObj = ToArray(pArray->GetDirectObjectAt(1));
if (!pObj)
return 0;
- CPDF_Object* pAltCS = pArray->GetDirectObjectAt(2);
+ const CPDF_Object* pAltCS = pArray->GetDirectObjectAt(2);
if (!pAltCS || pAltCS == m_pArray)
return 0;
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-11 09:07:44 +0000