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// Copyright 2016 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_CPDF_COLORSPACE_H_
#define CORE_FPDFAPI_PAGE_CPDF_COLORSPACE_H_
#include <memory>
#include <set>
#include "core/fpdfapi/page/cpdf_pattern.h"
#include "core/fxcrt/fx_string.h"
#include "core/fxcrt/fx_system.h"
#include "core/fxcrt/unowned_ptr.h"
#define PDFCS_DEVICEGRAY 1
#define PDFCS_DEVICERGB 2
#define PDFCS_DEVICECMYK 3
#define PDFCS_CALGRAY 4
#define PDFCS_CALRGB 5
#define PDFCS_LAB 6
#define PDFCS_ICCBASED 7
#define PDFCS_SEPARATION 8
#define PDFCS_DEVICEN 9
#define PDFCS_INDEXED 10
#define PDFCS_PATTERN 11
class CPDF_Array;
class CPDF_Document;
class CPDF_Object;
class CPDF_PatternCS;
constexpr size_t kMaxPatternColorComps = 16;
struct PatternValue {
CPDF_Pattern* m_pPattern;
CPDF_CountedPattern* m_pCountedPattern;
int m_nComps;
float m_Comps[kMaxPatternColorComps];
};
class CPDF_ColorSpace {
public:
static CPDF_ColorSpace* GetStockCS(int Family);
static CPDF_ColorSpace* ColorspaceFromName(const ByteString& name);
static std::unique_ptr<CPDF_ColorSpace> Load(CPDF_Document* pDoc,
CPDF_Object* pCSObj);
static std::unique_ptr<CPDF_ColorSpace> Load(
CPDF_Document* pDoc,
CPDF_Object* pCSObj,
std::set<CPDF_Object*>* pVisited);
void Release();
size_t GetBufSize() const;
float* CreateBuf() const;
// Should only be called if this colorspace is not a pattern.
float* CreateBufAndSetDefaultColor() const;
uint32_t CountComponents() const;
int GetFamily() const { return m_Family; }
bool IsSpecial() const {
return GetFamily() == PDFCS_SEPARATION || GetFamily() == PDFCS_DEVICEN ||
GetFamily() == PDFCS_INDEXED || GetFamily() == PDFCS_PATTERN;
}
virtual void GetDefaultValue(int iComponent,
float* value,
float* min,
float* max) const;
virtual bool GetRGB(const float* pBuf,
float* R,
float* G,
float* B) const = 0;
virtual void TranslateImageLine(uint8_t* dest_buf,
const uint8_t* src_buf,
int pixels,
int image_width,
int image_height,
bool bTransMask) const;
virtual void EnableStdConversion(bool bEnabled);
// Only call these 3 methods below if GetFamily() returns |PDFCS_PATTERN|.
// Returns |this| as a CPDF_PatternCS* if |this| is a pattern.
virtual CPDF_PatternCS* AsPatternCS();
virtual const CPDF_PatternCS* AsPatternCS() const;
// Use instead of GetRGB() for patterns.
virtual bool GetPatternRGB(const PatternValue& value,
float* R,
float* G,
float* B) const;
CPDF_Array* GetArray() const { return m_pArray.Get(); }
CPDF_Document* GetDocument() const { return m_pDocument.Get(); }
protected:
CPDF_ColorSpace(CPDF_Document* pDoc, int family);
virtual ~CPDF_ColorSpace();
// Returns the number of components, or 0 on failure.
virtual uint32_t v_Load(CPDF_Document* pDoc,
CPDF_Array* pArray,
std::set<CPDF_Object*>* pVisited) = 0;
// Stock colorspaces are not loaded normally. This initializes their
// components count.
void SetComponentsForStockCS(uint32_t nComponents);
UnownedPtr<CPDF_Document> const m_pDocument;
UnownedPtr<CPDF_Array> m_pArray;
const int m_Family;
uint32_t m_dwStdConversion = 0;
private:
uint32_t m_nComponents = 0;
};
using CPDF_CountedColorSpace = CPDF_CountedObject<CPDF_ColorSpace>;
namespace std {
// Make std::unique_ptr<CPDF_ColorSpace> call Release() rather than
// simply deleting the object.
template <>
struct default_delete<CPDF_ColorSpace> {
void operator()(CPDF_ColorSpace* pColorSpace) const {
if (pColorSpace)
pColorSpace->Release();
}
};
} // namespace std
#endif // CORE_FPDFAPI_PAGE_CPDF_COLORSPACE_H_
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