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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_SCANLINECOMPOSITOR_H_
#define CORE_FXGE_DIB_CFX_SCANLINECOMPOSITOR_H_
#include <memory>
#include "core/fxge/fx_dib.h"
class CFX_ScanlineCompositor {
public:
CFX_ScanlineCompositor();
~CFX_ScanlineCompositor();
bool Init(FXDIB_Format dest_format,
FXDIB_Format src_format,
int32_t width,
uint32_t* pSrcPalette,
uint32_t mask_color,
BlendMode blend_type,
bool bClip,
bool bRgbByteOrder,
int alpha_flag);
void CompositeRgbBitmapLine(uint8_t* dest_scan,
const uint8_t* src_scan,
int width,
const uint8_t* clip_scan,
const uint8_t* src_extra_alpha,
uint8_t* dst_extra_alpha);
void CompositePalBitmapLine(uint8_t* dest_scan,
const uint8_t* src_scan,
int src_left,
int width,
const uint8_t* clip_scan,
const uint8_t* src_extra_alpha,
uint8_t* dst_extra_alpha);
void CompositeByteMaskLine(uint8_t* dest_scan,
const uint8_t* src_scan,
int width,
const uint8_t* clip_scan,
uint8_t* dst_extra_alpha);
void CompositeBitMaskLine(uint8_t* dest_scan,
const uint8_t* src_scan,
int src_left,
int width,
const uint8_t* clip_scan,
uint8_t* dst_extra_alpha);
private:
void InitSourcePalette(FXDIB_Format src_format,
FXDIB_Format dest_format,
const uint32_t* pSrcPalette);
void InitSourceMask(int alpha_flag, uint32_t mask_color);
int m_iTransparency;
FXDIB_Format m_SrcFormat;
FXDIB_Format m_DestFormat;
std::unique_ptr<uint32_t, FxFreeDeleter> m_pSrcPalette;
int m_MaskAlpha;
int m_MaskRed;
int m_MaskGreen;
int m_MaskBlue;
BlendMode m_BlendType = BlendMode::kNormal;
bool m_bRgbByteOrder = false;
};
#endif // CORE_FXGE_DIB_CFX_SCANLINECOMPOSITOR_H_
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