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-rw-r--r--core/fpdfapi/fpdf_page/fpdf_page_func.cpp91
-rw-r--r--core/fpdfapi/fpdf_page/pageint.h30
2 files changed, 80 insertions, 41 deletions
diff --git a/core/fpdfapi/fpdf_page/fpdf_page_func.cpp b/core/fpdfapi/fpdf_page/fpdf_page_func.cpp
index 1acf62b596..c9b0ea236e 100644
--- a/core/fpdfapi/fpdf_page/fpdf_page_func.cpp
+++ b/core/fpdfapi/fpdf_page/fpdf_page_func.cpp
@@ -515,7 +515,7 @@ uint32_t GetBits32(const uint8_t* pData, int bitpos, int nbits) {
class CPDF_PSFunc : public CPDF_Function {
public:
- CPDF_PSFunc() {}
+ CPDF_PSFunc() : CPDF_Function(Type::kType4PostScript) {}
~CPDF_PSFunc() override {}
// CPDF_Function
@@ -548,7 +548,7 @@ FX_BOOL CPDF_PSFunc::v_Call(FX_FLOAT* inputs, FX_FLOAT* results) const {
} // namespace
-CPDF_SampledFunc::CPDF_SampledFunc() {}
+CPDF_SampledFunc::CPDF_SampledFunc() : CPDF_Function(Type::kType0Sampled) {}
CPDF_SampledFunc::~CPDF_SampledFunc() {}
@@ -569,20 +569,19 @@ FX_BOOL CPDF_SampledFunc::v_Init(CPDF_Object* pObj) {
m_pSampleStream.reset(new CPDF_StreamAcc);
m_pSampleStream->LoadAllData(pStream, FALSE);
FX_SAFE_UINT32 nTotalSampleBits = 1;
- m_pEncodeInfo.resize(m_nInputs);
+ m_EncodeInfo.resize(m_nInputs);
for (uint32_t i = 0; i < m_nInputs; i++) {
- m_pEncodeInfo[i].sizes = pSize ? pSize->GetIntegerAt(i) : 0;
+ m_EncodeInfo[i].sizes = pSize ? pSize->GetIntegerAt(i) : 0;
if (!pSize && i == 0)
- m_pEncodeInfo[i].sizes = pDict->GetIntegerBy("Size");
- nTotalSampleBits *= m_pEncodeInfo[i].sizes;
+ m_EncodeInfo[i].sizes = pDict->GetIntegerBy("Size");
+ nTotalSampleBits *= m_EncodeInfo[i].sizes;
if (pEncode) {
- m_pEncodeInfo[i].encode_min = pEncode->GetFloatAt(i * 2);
- m_pEncodeInfo[i].encode_max = pEncode->GetFloatAt(i * 2 + 1);
+ m_EncodeInfo[i].encode_min = pEncode->GetFloatAt(i * 2);
+ m_EncodeInfo[i].encode_max = pEncode->GetFloatAt(i * 2 + 1);
} else {
- m_pEncodeInfo[i].encode_min = 0;
- m_pEncodeInfo[i].encode_max = m_pEncodeInfo[i].sizes == 1
- ? 1
- : (FX_FLOAT)m_pEncodeInfo[i].sizes - 1;
+ m_EncodeInfo[i].encode_min = 0;
+ m_EncodeInfo[i].encode_max =
+ m_EncodeInfo[i].sizes == 1 ? 1 : (FX_FLOAT)m_EncodeInfo[i].sizes - 1;
}
}
nTotalSampleBits *= m_nBitsPerSample;
@@ -594,14 +593,14 @@ FX_BOOL CPDF_SampledFunc::v_Init(CPDF_Object* pObj) {
nTotalSampleBytes.ValueOrDie() > m_pSampleStream->GetSize()) {
return FALSE;
}
- m_pDecodeInfo.resize(m_nOutputs);
+ m_DecodeInfo.resize(m_nOutputs);
for (uint32_t i = 0; i < m_nOutputs; i++) {
if (pDecode) {
- m_pDecodeInfo[i].decode_min = pDecode->GetFloatAt(2 * i);
- m_pDecodeInfo[i].decode_max = pDecode->GetFloatAt(2 * i + 1);
+ m_DecodeInfo[i].decode_min = pDecode->GetFloatAt(2 * i);
+ m_DecodeInfo[i].decode_max = pDecode->GetFloatAt(2 * i + 1);
} else {
- m_pDecodeInfo[i].decode_min = m_pRanges[i * 2];
- m_pDecodeInfo[i].decode_max = m_pRanges[i * 2 + 1];
+ m_DecodeInfo[i].decode_min = m_pRanges[i * 2];
+ m_DecodeInfo[i].decode_max = m_pRanges[i * 2 + 1];
}
}
return TRUE;
@@ -618,12 +617,12 @@ FX_BOOL CPDF_SampledFunc::v_Call(FX_FLOAT* inputs, FX_FLOAT* results) const {
if (i == 0)
blocksize[i] = 1;
else
- blocksize[i] = blocksize[i - 1] * m_pEncodeInfo[i - 1].sizes;
- encoded_input[i] = PDF_Interpolate(
- inputs[i], m_pDomains[i * 2], m_pDomains[i * 2 + 1],
- m_pEncodeInfo[i].encode_min, m_pEncodeInfo[i].encode_max);
+ blocksize[i] = blocksize[i - 1] * m_EncodeInfo[i - 1].sizes;
+ encoded_input[i] =
+ PDF_Interpolate(inputs[i], m_pDomains[i * 2], m_pDomains[i * 2 + 1],
+ m_EncodeInfo[i].encode_min, m_EncodeInfo[i].encode_max);
index[i] = std::min((uint32_t)std::max(0.f, encoded_input[i]),
- m_pEncodeInfo[i].sizes - 1);
+ m_EncodeInfo[i].sizes - 1);
pos += index[i] * blocksize[i];
}
FX_SAFE_INT32 bits_to_output = m_nOutputs;
@@ -651,7 +650,7 @@ FX_BOOL CPDF_SampledFunc::v_Call(FX_FLOAT* inputs, FX_FLOAT* results) const {
m_nBitsPerSample);
FX_FLOAT encoded = (FX_FLOAT)sample;
for (uint32_t i = 0; i < m_nInputs; i++) {
- if (index[i] == m_pEncodeInfo[i].sizes - 1) {
+ if (index[i] == m_EncodeInfo[i].sizes - 1) {
if (index[i] == 0)
encoded = encoded_input[i] * (FX_FLOAT)sample;
} else {
@@ -668,17 +667,17 @@ FX_BOOL CPDF_SampledFunc::v_Call(FX_FLOAT* inputs, FX_FLOAT* results) const {
((FX_FLOAT)sample1 - (FX_FLOAT)sample);
}
}
- results[j] = PDF_Interpolate(encoded, 0, (FX_FLOAT)m_SampleMax,
- m_pDecodeInfo[j].decode_min,
- m_pDecodeInfo[j].decode_max);
+ results[j] =
+ PDF_Interpolate(encoded, 0, (FX_FLOAT)m_SampleMax,
+ m_DecodeInfo[j].decode_min, m_DecodeInfo[j].decode_max);
}
return TRUE;
}
-CPDF_ExpIntFunc::CPDF_ExpIntFunc() {
- m_pBeginValues = NULL;
- m_pEndValues = NULL;
-}
+CPDF_ExpIntFunc::CPDF_ExpIntFunc()
+ : CPDF_Function(Type::kType2ExpotentialInterpolation),
+ m_pBeginValues(nullptr),
+ m_pEndValues(nullptr) {}
CPDF_ExpIntFunc::~CPDF_ExpIntFunc() {
FX_Free(m_pBeginValues);
@@ -722,10 +721,10 @@ FX_BOOL CPDF_ExpIntFunc::v_Call(FX_FLOAT* inputs, FX_FLOAT* results) const {
return TRUE;
}
-CPDF_StitchFunc::CPDF_StitchFunc() {
- m_pBounds = NULL;
- m_pEncode = NULL;
-}
+CPDF_StitchFunc::CPDF_StitchFunc()
+ : CPDF_Function(Type::kType3Stitching),
+ m_pBounds(nullptr),
+ m_pEncode(nullptr) {}
CPDF_StitchFunc::~CPDF_StitchFunc() {
FX_Free(m_pBounds);
@@ -840,10 +839,8 @@ CPDF_Function::Type CPDF_Function::IntegerToFunctionType(int iType) {
}
}
-CPDF_Function::CPDF_Function() {
- m_pDomains = NULL;
- m_pRanges = NULL;
-}
+CPDF_Function::CPDF_Function(Type type)
+ : m_pDomains(nullptr), m_pRanges(nullptr), m_Type(type) {}
CPDF_Function::~CPDF_Function() {
FX_Free(m_pDomains);
@@ -912,3 +909,21 @@ FX_BOOL CPDF_Function::Call(FX_FLOAT* inputs,
}
return TRUE;
}
+
+const CPDF_SampledFunc* CPDF_Function::ToSampledFunc() const {
+ return m_Type == Type::kType0Sampled
+ ? static_cast<const CPDF_SampledFunc*>(this)
+ : nullptr;
+}
+
+const CPDF_ExpIntFunc* CPDF_Function::ToExpIntFunc() const {
+ return m_Type == Type::kType2ExpotentialInterpolation
+ ? static_cast<const CPDF_ExpIntFunc*>(this)
+ : nullptr;
+}
+
+const CPDF_StitchFunc* CPDF_Function::ToStitchFunc() const {
+ return m_Type == Type::kType3Stitching
+ ? static_cast<const CPDF_StitchFunc*>(this)
+ : nullptr;
+}
diff --git a/core/fpdfapi/fpdf_page/pageint.h b/core/fpdfapi/fpdf_page/pageint.h
index 8d507a181d..64d106f1dc 100644
--- a/core/fpdfapi/fpdf_page/pageint.h
+++ b/core/fpdfapi/fpdf_page/pageint.h
@@ -19,6 +19,7 @@
class CPDF_AllStates;
class CPDF_ColorSpace;
+class CPDF_ExpIntFunc;
class CPDF_Font;
class CPDF_FontEncoding;
class CPDF_Form;
@@ -27,6 +28,8 @@ class CPDF_Image;
class CPDF_ImageObject;
class CPDF_Page;
class CPDF_Pattern;
+class CPDF_SampledFunc;
+class CPDF_StitchFunc;
class CPDF_StreamAcc;
class CPDF_TextObject;
class CPDF_Type3Char;
@@ -384,9 +387,15 @@ class CPDF_Function {
int& nresults) const;
uint32_t CountInputs() const { return m_nInputs; }
uint32_t CountOutputs() const { return m_nOutputs; }
+ FX_FLOAT GetDomain(int i) const { return m_pDomains[i]; }
+ FX_FLOAT GetRange(int i) const { return m_pRanges[i]; }
+
+ const CPDF_SampledFunc* ToSampledFunc() const;
+ const CPDF_ExpIntFunc* ToExpIntFunc() const;
+ const CPDF_StitchFunc* ToStitchFunc() const;
protected:
- CPDF_Function();
+ explicit CPDF_Function(Type type);
FX_BOOL Init(CPDF_Object* pObj);
virtual FX_BOOL v_Init(CPDF_Object* pObj) = 0;
@@ -396,6 +405,7 @@ class CPDF_Function {
uint32_t m_nOutputs;
FX_FLOAT* m_pDomains;
FX_FLOAT* m_pRanges;
+ const Type m_Type;
};
class CPDF_ExpIntFunc : public CPDF_Function {
@@ -433,9 +443,17 @@ class CPDF_SampledFunc : public CPDF_Function {
FX_BOOL v_Init(CPDF_Object* pObj) override;
FX_BOOL v_Call(FX_FLOAT* inputs, FX_FLOAT* results) const override;
+ const std::vector<SampleEncodeInfo>& GetEncodeInfo() const {
+ return m_EncodeInfo;
+ }
+ uint32_t GetBitsPerSample() const { return m_nBitsPerSample; }
+ const CPDF_StreamAcc* GetSampleStream() const {
+ return m_pSampleStream.get();
+ }
+
private:
- std::vector<SampleEncodeInfo> m_pEncodeInfo;
- std::vector<SampleDecodeInfo> m_pDecodeInfo;
+ std::vector<SampleEncodeInfo> m_EncodeInfo;
+ std::vector<SampleDecodeInfo> m_DecodeInfo;
uint32_t m_nBitsPerSample;
uint32_t m_SampleMax;
std::unique_ptr<CPDF_StreamAcc> m_pSampleStream;
@@ -450,6 +468,12 @@ class CPDF_StitchFunc : public CPDF_Function {
FX_BOOL v_Init(CPDF_Object* pObj) override;
FX_BOOL v_Call(FX_FLOAT* inputs, FX_FLOAT* results) const override;
+ const std::vector<std::unique_ptr<CPDF_Function>>& GetSubFunctions() const {
+ return m_pSubFunctions;
+ }
+ FX_FLOAT GetBound(size_t i) const { return m_pBounds[i]; }
+
+ private:
std::vector<std::unique_ptr<CPDF_Function>> m_pSubFunctions;
FX_FLOAT* m_pBounds;
FX_FLOAT* m_pEncode;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-14 08:03:36 +0000