typedef void* CP_HCIRCLEBUFFER;  
typedef void (*pfn_CircleBufferUninitialise)(CP_HCIRCLEBUFFER bBuffer);
//
typedef void (*pfn_CircleBufferWrite)(CP_HCIRCLEBUFFER bBuffer, const void* pSourceBuffer, const unsigned int iNumBytes);
typedef BOOL (*pfn_CircleBufferRead)(CP_HCIRCLEBUFFER bBuffer, void* pDestBuffer, const unsigned int iBytesToRead, unsigned int* pbBytesRead);
typedef unsigned int (*pfn_CircleGetUsedSpace)(CP_HCIRCLEBUFFER bBuffer);
typedef unsigned int (*pfn_CircleGetFreeSpace)(CP_HCIRCLEBUFFER bBuffer);
typedef void (*pfn_CircleFlush)(CP_HCIRCLEBUFFER bBuffer);
typedef void (*pfn_CircleSetComplete)(CP_HCIRCLEBUFFER bBuffer);
typedef BOOL (*pfn_CircleIsComplete)(CP_HCIRCLEBUFFER bBuffer);
//




typedef struct _CPs_CircleBuffer
{
    pfn_CircleBufferUninitialise Uninitialise;
    pfn_CircleBufferWrite Write;
    pfn_CircleBufferRead Read;
    pfn_CircleFlush Flush;
    pfn_CircleGetUsedSpace GetUsedSize;
    pfn_CircleGetFreeSpace GetFreeSize;
    pfn_CircleSetComplete SetComplete;
    pfn_CircleIsComplete IsComplete;

    BYTE* m_pBuffer;
    unsigned int m_iBufferSize;
    unsigned int m_iReadCursor;
    unsigned int m_iWriteCursor;
    HANDLE m_evtDataAvailable;
    CRITICAL_SECTION m_csCircleBuffer;
    BOOL m_bComplete;

} CPs_CircleBuffer;
//
////////////////////////////////////////////////////////////////////////////////
CPs_CircleBuffer* CP_CreateCircleBuffer(const unsigned int iBufferSize);