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// Copyright 2016 The PDFium Authors
// 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 <stdint.h>
#include "core/fxcrt/data_vector.h"
#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:
CONSTRUCT_VIA_MAKE_RETAIN;
// CFX_DIBBase:
pdfium::span<const uint8_t> GetScanline(int line) const override;
private:
CPDF_TransferFuncDIB(RetainPtr<CFX_DIBBase> pSrc,
RetainPtr<CPDF_TransferFunc> pTransferFunc);
~CPDF_TransferFuncDIB() override;
void TranslateScanline(pdfium::span<const uint8_t> src_span) const;
FXDIB_Format GetDestFormat() const;
RetainPtr<CFX_DIBBase> const m_pSrc;
RetainPtr<CPDF_TransferFunc> const m_pTransferFunc;
const pdfium::span<const uint8_t> m_RampR;
const pdfium::span<const uint8_t> m_RampG;
const pdfium::span<const uint8_t> m_RampB;
mutable DataVector<uint8_t> m_Scanline;
};
#endif // CORE_FPDFAPI_PAGE_CPDF_TRANSFERFUNCDIB_H_
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