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// Copyright 2017 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_FXGE_DIB_CFX_FILTEREDDIB_H_
#define CORE_FXGE_DIB_CFX_FILTEREDDIB_H_
#include <vector>
#include "core/fxcrt/retain_ptr.h"
#include "core/fxge/dib/cfx_dibsource.h"
class CFX_FilteredDIB : public CFX_DIBSource {
public:
template <typename T, typename... Args>
friend RetainPtr<T> pdfium::MakeRetain(Args&&... args);
~CFX_FilteredDIB() override;
virtual FXDIB_Format GetDestFormat() = 0;
virtual uint32_t* GetDestPalette() = 0;
virtual void TranslateScanline(const uint8_t* src_buf,
std::vector<uint8_t>* dest_buf) const = 0;
virtual void TranslateDownSamples(uint8_t* dest_buf,
const uint8_t* src_buf,
int pixels,
int Bpp) const = 0;
void LoadSrc(const RetainPtr<CFX_DIBSource>& pSrc);
protected:
CFX_FilteredDIB();
// CFX_DIBSource
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;
RetainPtr<CFX_DIBSource> m_pSrc;
mutable std::vector<uint8_t> m_Scanline;
};
#endif // CORE_FXGE_DIB_CFX_FILTEREDDIB_H_
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