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#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 destructor
virtual ~CUnBitArrayBase() {}
// functions
virtual int FillBitArray();
virtual int FillAndResetBitArray(int nFileLocation = -1, int nNewBitIndex = 0);
virtual void GenerateArray(int * pOutputArray, int nElements, int nBytesRequired = -1) {}
virtual unsigned int 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 // #ifndef APE_UNBITARRAYBASE_H
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