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// Copyright 2015 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_TRDPROC_H_
#define CORE_FXCODEC_JBIG2_JBIG2_TRDPROC_H_
#include <memory>
#include <vector>
#include "core/fxcodec/jbig2/JBig2_Image.h"
#include "core/fxcrt/fx_system.h"
#include "core/fxcrt/unowned_ptr.h"
class CJBig2_ArithDecoder;
class CJBig2_ArithIaidDecoder;
class CJBig2_ArithIntDecoder;
class CJBig2_BitStream;
class CJBig2_HuffmanTable;
struct JBig2ArithCtx;
struct JBig2HuffmanCode;
struct JBig2IntDecoderState {
JBig2IntDecoderState();
~JBig2IntDecoderState();
UnownedPtr<CJBig2_ArithIntDecoder> IADT;
UnownedPtr<CJBig2_ArithIntDecoder> IAFS;
UnownedPtr<CJBig2_ArithIntDecoder> IADS;
UnownedPtr<CJBig2_ArithIntDecoder> IAIT;
UnownedPtr<CJBig2_ArithIntDecoder> IARI;
UnownedPtr<CJBig2_ArithIntDecoder> IARDW;
UnownedPtr<CJBig2_ArithIntDecoder> IARDH;
UnownedPtr<CJBig2_ArithIntDecoder> IARDX;
UnownedPtr<CJBig2_ArithIntDecoder> IARDY;
UnownedPtr<CJBig2_ArithIaidDecoder> IAID;
};
enum JBig2Corner {
JBIG2_CORNER_BOTTOMLEFT = 0,
JBIG2_CORNER_TOPLEFT = 1,
JBIG2_CORNER_BOTTOMRIGHT = 2,
JBIG2_CORNER_TOPRIGHT = 3
};
class CJBig2_TRDProc {
public:
CJBig2_TRDProc();
~CJBig2_TRDProc();
std::unique_ptr<CJBig2_Image> DecodeHuffman(CJBig2_BitStream* pStream,
JBig2ArithCtx* grContext);
std::unique_ptr<CJBig2_Image> DecodeArith(CJBig2_ArithDecoder* pArithDecoder,
JBig2ArithCtx* grContext,
JBig2IntDecoderState* pIDS);
bool SBHUFF;
bool SBREFINE;
uint32_t SBW;
uint32_t SBH;
uint32_t SBNUMINSTANCES;
uint32_t SBSTRIPS;
uint32_t SBNUMSYMS;
std::vector<JBig2HuffmanCode> SBSYMCODES;
uint8_t SBSYMCODELEN;
CJBig2_Image** SBSYMS;
bool SBDEFPIXEL;
JBig2ComposeOp SBCOMBOP;
bool TRANSPOSED;
JBig2Corner REFCORNER;
int8_t SBDSOFFSET;
const CJBig2_HuffmanTable* SBHUFFFS;
const CJBig2_HuffmanTable* SBHUFFDS;
const CJBig2_HuffmanTable* SBHUFFDT;
const CJBig2_HuffmanTable* SBHUFFRDW;
const CJBig2_HuffmanTable* SBHUFFRDH;
const CJBig2_HuffmanTable* SBHUFFRDX;
const CJBig2_HuffmanTable* SBHUFFRDY;
const CJBig2_HuffmanTable* SBHUFFRSIZE;
bool SBRTEMPLATE;
int8_t SBRAT[4];
private:
struct ComposeData {
int32_t x;
int32_t y;
uint32_t increment = 0;
};
ComposeData GetComposeData(int32_t SI,
int32_t TI,
uint32_t WI,
uint32_t HI) const;
};
#endif // CORE_FXCODEC_JBIG2_JBIG2_TRDPROC_H_
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