| // 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_ |