// 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_TRANSFERFUNCDIB_H_ #define CORE_FPDFAPI_PAGE_CPDF_TRANSFERFUNCDIB_H_ #include #include "core/fxcrt/retain_ptr.h" #include "core/fxge/dib/cfx_dibbase.h" #include "third_party/base/span.h" class CPDF_TransferFunc; class CPDF_TransferFuncDIB final : public CFX_DIBBase { public: template friend RetainPtr pdfium::MakeRetain(Args&&... args); void TranslateScanline(const uint8_t* src_buf, std::vector* dest_buf) const; void TranslateDownSamples(uint8_t* dest_buf, const uint8_t* src_buf, int pixels, int Bpp) const; private: CPDF_TransferFuncDIB(const RetainPtr& pSrc, const RetainPtr& pTransferFunc); ~CPDF_TransferFuncDIB() override; // CFX_DIBBase: const uint8_t* GetScanline(int line) const override; void DownSampleScanline(int line, uint8_t* dest_scan, int dest_bpp, int dest_width, bool bFlipX, int clip_left, int clip_width) const override; FXDIB_Format GetDestFormat() const; RetainPtr const m_pSrc; mutable std::vector m_Scanline; RetainPtr const m_pTransferFunc; const pdfium::span m_RampR; const pdfium::span m_RampG; const pdfium::span m_RampB; }; #endif // CORE_FPDFAPI_PAGE_CPDF_TRANSFERFUNCDIB_H_