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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 <array>
#include <memory>
#include <set>
#include <vector>
#include "core/fpdfapi/page/cpdf_pattern.h"
#include "core/fxcrt/fx_string.h"
#include "core/fxcrt/fx_system.h"
#include "core/fxcrt/observed_ptr.h"
#include "core/fxcrt/retain_ptr.h"
#include "core/fxcrt/unowned_ptr.h"
#include "third_party/base/span.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;
class PatternValue {
public:
PatternValue();
PatternValue(const PatternValue& that);
~PatternValue();
void SetComps(pdfium::span<const float> comps);
pdfium::span<const float> GetComps() const {
// TODO(tsepez): update span.h from base for implicit std::array ctor.
return {m_Comps.data(), m_Comps.size()};
}
CPDF_Pattern* GetPattern() const { return m_pRetainedPattern.Get(); }
void SetPattern(const RetainPtr<CPDF_Pattern>& pPattern) {
m_pRetainedPattern = pPattern;
}
private:
RetainPtr<CPDF_Pattern> m_pRetainedPattern;
std::array<float, kMaxPatternColorComps> m_Comps;
};
class CPDF_ColorSpace : public Retainable, public Observable {
public:
static RetainPtr<CPDF_ColorSpace> GetStockCS(int Family);
static RetainPtr<CPDF_ColorSpace> ColorspaceFromName(const ByteString& name);
static RetainPtr<CPDF_ColorSpace> Load(CPDF_Document* pDoc,
CPDF_Object* pObj);
static RetainPtr<CPDF_ColorSpace> Load(
CPDF_Document* pDoc,
const CPDF_Object* pObj,
std::set<const CPDF_Object*>* pVisited);
static uint32_t ComponentsForFamily(int family);
static bool IsValidIccComponents(int components);
const CPDF_Array* GetArray() const { return m_pArray.Get(); }
CPDF_Document* GetDocument() const { return m_pDocument.Get(); }
// Should only be called if this colorspace is not a pattern.
std::vector<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 bool GetRGB(pdfium::span<const float> pBuf,
float* R,
float* G,
float* B) const = 0;
virtual void GetDefaultValue(int iComponent,
float* value,
float* min,
float* max) const;
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);
virtual bool IsNormal() const;
// 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;
protected:
CPDF_ColorSpace(CPDF_Document* pDoc, int family);
~CPDF_ColorSpace() override;
// Returns the number of components, or 0 on failure.
virtual uint32_t v_Load(CPDF_Document* pDoc,
const CPDF_Array* pArray,
std::set<const 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;
RetainPtr<const CPDF_Array> m_pArray;
const int m_Family;
uint32_t m_dwStdConversion = 0;
private:
uint32_t m_nComponents = 0;
};
#endif // CORE_FPDFAPI_PAGE_CPDF_COLORSPACE_H_