blob: 0edb432ddeb0f6eea02382c506818ee3ef5fe550 [file] [log] [blame]
// 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.
#include "core/fxcrt/retain_ptr.h"
class CPDF_StreamAcc;
class CJBig2_BitStream {
explicit CJBig2_BitStream(const RetainPtr<CPDF_StreamAcc>& pSrcStream);
// TODO(thestig): readFoo() should return bool.
int32_t readNBits(uint32_t nBits, uint32_t* dwResult);
int32_t readNBits(uint32_t nBits, int32_t* nResult);
int32_t read1Bit(uint32_t* dwResult);
int32_t read1Bit(bool* bResult);
int32_t read1Byte(uint8_t* cResult);
int32_t readInteger(uint32_t* dwResult);
int32_t readShortInteger(uint16_t* wResult);
void alignByte();
uint8_t getCurByte() const;
void incByteIdx();
uint8_t getCurByte_arith() const;
uint8_t getNextByte_arith() const;
uint32_t getOffset() const;
void setOffset(uint32_t dwOffset);
uint32_t getBitPos() const;
void setBitPos(uint32_t dwBitPos);
const uint8_t* getBuf() const;
uint32_t getLength() const { return m_dwLength; }
const uint8_t* getPointer() const;
void offset(uint32_t dwOffset);
uint32_t getByteLeft() const;
uint32_t getObjNum() const;
bool IsInBounds() const;
void AdvanceBit();
uint32_t LengthInBits() const;
const uint8_t* m_pBuf;
uint32_t m_dwLength;
uint32_t m_dwByteIdx;
uint32_t m_dwBitIdx;
const uint32_t m_dwObjNum;
CJBig2_BitStream(const CJBig2_BitStream&) = delete;
void operator=(const CJBig2_BitStream&) = delete;