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CPI_CircleBuffer.h
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CPI_CircleBuffer.h：Code Content
  7. typedef void* CP_HCIRCLEBUFFER;  
  8. typedef void (*pfn_CircleBufferUninitialise)(CP_HCIRCLEBUFFER bBuffer);
  9. //
  10. typedef void (*pfn_CircleBufferWrite)(CP_HCIRCLEBUFFER bBuffer, const void* pSourceBuffer, const unsigned int iNumBytes);
  11. typedef BOOL (*pfn_CircleBufferRead)(CP_HCIRCLEBUFFER bBuffer, void* pDestBuffer, const unsigned int iBytesToRead, unsigned int* pbBytesRead);
  12. typedef unsigned int (*pfn_CircleGetUsedSpace)(CP_HCIRCLEBUFFER bBuffer);
  13. typedef unsigned int (*pfn_CircleGetFreeSpace)(CP_HCIRCLEBUFFER bBuffer);
  14. typedef void (*pfn_CircleFlush)(CP_HCIRCLEBUFFER bBuffer);
  15. typedef void (*pfn_CircleSetComplete)(CP_HCIRCLEBUFFER bBuffer);
  16. typedef BOOL (*pfn_CircleIsComplete)(CP_HCIRCLEBUFFER bBuffer);
  17. //
  22. typedef struct _CPs_CircleBuffer
  23. {
  24.     pfn_CircleBufferUninitialise Uninitialise;
  25.     pfn_CircleBufferWrite Write;
  26.     pfn_CircleBufferRead Read;
  27.     pfn_CircleFlush Flush;
  28.     pfn_CircleGetUsedSpace GetUsedSize;
  29.     pfn_CircleGetFreeSpace GetFreeSize;
  30.     pfn_CircleSetComplete SetComplete;
  31.     pfn_CircleIsComplete IsComplete;
  33.     BYTE* m_pBuffer;
  34.     unsigned int m_iBufferSize;
  35.     unsigned int m_iReadCursor;
  36.     unsigned int m_iWriteCursor;
  37.     HANDLE m_evtDataAvailable;
  38.     CRITICAL_SECTION m_csCircleBuffer;
  39.     BOOL m_bComplete;
  41. } CPs_CircleBuffer;
  42. //
  43. ////////////////////////////////////////////////////////////////////////////////
  44. CPs_CircleBuffer* CP_CreateCircleBuffer(const unsigned int iBufferSize);