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// Copyright 2015 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_FXCODEC_JBIG2_JBIG2_SDDPROC_H_
#define CORE_FXCODEC_JBIG2_JBIG2_SDDPROC_H_
#include <stdint.h>
#include <memory>
#include <vector>
#include "core/fxcodec/jbig2/JBig2_ArithDecoder.h"
#include "core/fxcrt/unowned_ptr.h"
#include "third_party/base/span.h"
class CJBig2_BitStream;
class CJBig2_HuffmanTable;
class CJBig2_Image;
class CJBig2_SymbolDict;
class CJBig2_SDDProc {
public:
CJBig2_SDDProc();
~CJBig2_SDDProc();
std::unique_ptr<CJBig2_SymbolDict> DecodeArith(
CJBig2_ArithDecoder* pArithDecoder,
std::vector<JBig2ArithCtx>* gbContext,
std::vector<JBig2ArithCtx>* grContext);
std::unique_ptr<CJBig2_SymbolDict> DecodeHuffman(
CJBig2_BitStream* pStream,
std::vector<JBig2ArithCtx>* gbContext,
std::vector<JBig2ArithCtx>* grContext);
bool SDHUFF;
bool SDREFAGG;
bool SDRTEMPLATE;
uint8_t SDTEMPLATE;
uint32_t SDNUMINSYMS;
uint32_t SDNUMNEWSYMS;
uint32_t SDNUMEXSYMS;
CJBig2_Image** SDINSYMS;
UnownedPtr<const CJBig2_HuffmanTable> SDHUFFDH;
UnownedPtr<const CJBig2_HuffmanTable> SDHUFFDW;
UnownedPtr<const CJBig2_HuffmanTable> SDHUFFBMSIZE;
UnownedPtr<const CJBig2_HuffmanTable> SDHUFFAGGINST;
int8_t SDAT[8];
int8_t SDRAT[4];
private:
// Reads from `SDINSYMS` if `i` is in-bounds. Otherwise, reduce `i` by
// `SDNUMINSYMS` and read from `new_syms` at the new index.
CJBig2_Image* GetImage(
uint32_t i,
pdfium::span<const std::unique_ptr<CJBig2_Image>> new_syms) const;
};
#endif // CORE_FXCODEC_JBIG2_JBIG2_SDDPROC_H_