#ifndef APE_UNBITARRAYBASE_H
#define APE_UNBITARRAYBASE_H
class IAPEDecompress;
class CIO;
struct UNBIT_ARRAY_STATE
{
uint32 k;
uint32 nKSum;
};
enum DECODE_VALUE_METHOD
{
DECODE_VALUE_METHOD_UNSIGNED_INT,
DECODE_VALUE_METHOD_UNSIGNED_RICE,
DECODE_VALUE_METHOD_X_BITS
};
class CUnBitArrayBase
{
public:
virtual ~CUnBitArrayBase() {}
virtual int FillBitArray();
virtual int FillAndResetBitArray(int nFileLocation = -1,
int nNewBitIndex = 0);
virtual void GenerateArray(int * pOutputArray, int nElements,
int nBytesRequired = -1) {}
virtual uint DecodeValue(DECODE_VALUE_METHOD DecodeMethod,
int nParam1 = 0, int nParam2 = 0) { return 0; }
virtual void AdvanceToByteBoundary();
virtual int DecodeValueRange(UNBIT_ARRAY_STATE& BitArrayState)
{ return 0; }
virtual void FlushState(UNBIT_ARRAY_STATE& BitArrayState) {}
virtual void FlushBitArray() {}
virtual void Finalize() {}
protected:
virtual int CreateHelper(CIO* pIO, int nBytes, int nVersion);
virtual uint32 DecodeValueXBits(uint32 nBits);
uint32 m_nElements;
uint32 m_nBytes;
uint32 m_nBits;
int m_nVersion;
CIO * m_pIO;
uint32 m_nCurrentBitIndex;
uint32 * m_pBitArray;
};
CUnBitArrayBase* CreateUnBitArray(IAPEDecompress* pAPEDecompress, int nVersion);
#endif
