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// Copyright 2014 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_FXCODEC_JBIG2_JBIG2_IMAGE_H_
#define CORE_FXCODEC_JBIG2_JBIG2_IMAGE_H_
#include <memory>
#include "core/fxcodec/jbig2/JBig2_Define.h"
#include "core/fxcrt/maybe_owned.h"
struct FX_RECT;
enum JBig2ComposeOp {
JBIG2_COMPOSE_OR = 0,
JBIG2_COMPOSE_AND = 1,
JBIG2_COMPOSE_XOR = 2,
JBIG2_COMPOSE_XNOR = 3,
JBIG2_COMPOSE_REPLACE = 4
};
class CJBig2_Image {
public:
CJBig2_Image(int32_t w, int32_t h);
CJBig2_Image(int32_t w, int32_t h, int32_t stride, uint8_t* pBuf);
CJBig2_Image(const CJBig2_Image& im);
~CJBig2_Image();
static bool IsValidImageSize(int32_t w, int32_t h);
int32_t width() const { return m_nWidth; }
int32_t height() const { return m_nHeight; }
int32_t stride() const { return m_nStride; }
uint8_t* data() const { return m_pData.Get(); }
int GetPixel(int32_t x, int32_t y) const;
void SetPixel(int32_t x, int32_t y, int bVal);
uint8_t* GetLineUnsafe(int32_t y) const { return data() + y * m_nStride; }
uint8_t* GetLine(int32_t y) const {
return (y >= 0 && y < m_nHeight) ? GetLineUnsafe(y) : nullptr;
}
void CopyLine(int32_t hTo, int32_t hFrom);
void Fill(bool v);
bool ComposeFrom(int32_t x, int32_t y, CJBig2_Image* pSrc, JBig2ComposeOp op);
bool ComposeFromWithRect(int32_t x,
int32_t y,
CJBig2_Image* pSrc,
const FX_RECT& rtSrc,
JBig2ComposeOp op);
std::unique_ptr<CJBig2_Image> SubImage(int32_t x,
int32_t y,
int32_t w,
int32_t h);
void Expand(int32_t h, bool v);
bool ComposeTo(CJBig2_Image* pDst, int32_t x, int32_t y, JBig2ComposeOp op);
bool ComposeToWithRect(CJBig2_Image* pDst,
int32_t x,
int32_t y,
const FX_RECT& rtSrc,
JBig2ComposeOp op);
private:
void SubImageFast(int32_t x,
int32_t y,
int32_t w,
int32_t h,
CJBig2_Image* pImage);
void SubImageSlow(int32_t x,
int32_t y,
int32_t w,
int32_t h,
CJBig2_Image* pImage);
bool ComposeToOpt2(CJBig2_Image* pDst,
int32_t x,
int32_t y,
JBig2ComposeOp op);
bool ComposeToOpt2WithRect(CJBig2_Image* pDst,
int32_t x,
int32_t y,
JBig2ComposeOp op,
const FX_RECT& rtSrc);
MaybeOwned<uint8_t, FxFreeDeleter> m_pData;
int32_t m_nWidth = 0; // 1-bit pixels
int32_t m_nHeight = 0; // lines
int32_t m_nStride = 0; // bytes, must be multiple of 4.
};
#endif // CORE_FXCODEC_JBIG2_JBIG2_IMAGE_H_
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