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// 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
#ifndef CORE_FPDFAPI_PAGE_PAGEINT_H_
#define CORE_FPDFAPI_PAGE_PAGEINT_H_
#include <memory>
#include <vector>
#include "core/fpdfapi/page/cpdf_colorspace.h"
#include "core/fpdfapi/page/cpdf_countedobject.h"
class CPDF_ExpIntFunc;
class CPDF_Pattern;
class CPDF_SampledFunc;
class CPDF_StitchFunc;
class CPDF_StreamAcc;
class CPDF_Function {
public:
enum class Type {
kTypeInvalid = -1,
kType0Sampled = 0,
kType2ExpotentialInterpolation = 2,
kType3Stitching = 3,
kType4PostScript = 4,
};
static std::unique_ptr<CPDF_Function> Load(CPDF_Object* pFuncObj);
static Type IntegerToFunctionType(int iType);
virtual ~CPDF_Function();
bool Call(float* inputs,
uint32_t ninputs,
float* results,
int* nresults) const;
uint32_t CountInputs() const { return m_nInputs; }
uint32_t CountOutputs() const { return m_nOutputs; }
float GetDomain(int i) const { return m_pDomains[i]; }
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:
explicit CPDF_Function(Type type);
bool Init(CPDF_Object* pObj);
virtual bool v_Init(CPDF_Object* pObj) = 0;
virtual bool v_Call(float* inputs, float* results) const = 0;
uint32_t m_nInputs;
uint32_t m_nOutputs;
float* m_pDomains;
float* m_pRanges;
const Type m_Type;
};
class CPDF_ExpIntFunc : public CPDF_Function {
public:
CPDF_ExpIntFunc();
~CPDF_ExpIntFunc() override;
// CPDF_Function
bool v_Init(CPDF_Object* pObj) override;
bool v_Call(float* inputs, float* results) const override;
uint32_t m_nOrigOutputs;
float m_Exponent;
float* m_pBeginValues;
float* m_pEndValues;
};
class CPDF_SampledFunc : public CPDF_Function {
public:
struct SampleEncodeInfo {
float encode_max;
float encode_min;
uint32_t sizes;
};
struct SampleDecodeInfo {
float decode_max;
float decode_min;
};
CPDF_SampledFunc();
~CPDF_SampledFunc() override;
// CPDF_Function
bool v_Init(CPDF_Object* pObj) override;
bool v_Call(float* inputs, 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_EncodeInfo;
std::vector<SampleDecodeInfo> m_DecodeInfo;
uint32_t m_nBitsPerSample;
uint32_t m_SampleMax;
std::unique_ptr<CPDF_StreamAcc> m_pSampleStream;
};
class CPDF_StitchFunc : public CPDF_Function {
public:
CPDF_StitchFunc();
~CPDF_StitchFunc() override;
// CPDF_Function
bool v_Init(CPDF_Object* pObj) override;
bool v_Call(float* inputs, float* results) const override;
const std::vector<std::unique_ptr<CPDF_Function>>& GetSubFunctions() const {
return m_pSubFunctions;
}
float GetBound(size_t i) const { return m_pBounds[i]; }
private:
std::vector<std::unique_ptr<CPDF_Function>> m_pSubFunctions;
float* m_pBounds;
float* m_pEncode;
static const uint32_t kRequiredNumInputs = 1;
};
class CPDF_IccProfile {
public:
CPDF_IccProfile(const uint8_t* pData, uint32_t dwSize);
~CPDF_IccProfile();
bool IsValid() const { return IsSRGB() || IsSupported(); }
bool IsSRGB() const { return m_bsRGB; }
bool IsSupported() const { return !!m_pTransform; }
void* transform() { return m_pTransform; }
uint32_t GetComponents() const { return m_nSrcComponents; }
private:
const bool m_bsRGB;
void* m_pTransform = nullptr;
uint32_t m_nSrcComponents = 0;
};
class CPDF_DeviceCS : public CPDF_ColorSpace {
public:
CPDF_DeviceCS(CPDF_Document* pDoc, int family);
~CPDF_DeviceCS() override;
// CPDF_ColorSpace:
bool GetRGB(float* pBuf, float* R, float* G, float* B) const override;
bool SetRGB(float* pBuf, float R, float G, float B) const override;
bool v_GetCMYK(float* pBuf,
float* c,
float* m,
float* y,
float* k) const override;
bool v_SetCMYK(float* pBuf,
float c,
float m,
float y,
float k) const override;
void TranslateImageLine(uint8_t* pDestBuf,
const uint8_t* pSrcBuf,
int pixels,
int image_width,
int image_height,
bool bTransMask) const override;
};
class CPDF_PatternCS : public CPDF_ColorSpace {
public:
explicit CPDF_PatternCS(CPDF_Document* pDoc);
~CPDF_PatternCS() override;
// CPDF_ColorSpace:
bool v_Load(CPDF_Document* pDoc, CPDF_Array* pArray) override;
bool GetRGB(float* pBuf, float* R, float* G, float* B) const override;
CPDF_ColorSpace* GetBaseCS() const override;
private:
CPDF_ColorSpace* m_pBaseCS;
CPDF_CountedColorSpace* m_pCountedBaseCS;
};
#define MAX_PATTERN_COLORCOMPS 16
struct PatternValue {
CPDF_Pattern* m_pPattern;
CPDF_CountedPattern* m_pCountedPattern;
int m_nComps;
float m_Comps[MAX_PATTERN_COLORCOMPS];
};
CFX_ByteStringC PDF_FindKeyAbbreviationForTesting(const CFX_ByteStringC& abbr);
CFX_ByteStringC PDF_FindValueAbbreviationForTesting(
const CFX_ByteStringC& abbr);
#endif // CORE_FPDFAPI_PAGE_PAGEINT_H_
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