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Compression.h
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Upload User: onsales
Upload Date: 2010-01-31
Package Size: 224k
Code Size: 2k
Category:

WinSock-NDIS

Development Platform:

Visual C++

Compression.h：Code Content
  1. // Compression.h: interface for the CCompression class.
  2. //
  3. //////////////////////////////////////////////////////////////////////
  5. #if !defined(AFX_COMPRESSION_H__D764BF21_0E55_11D4_8D3A_00002100A114__INCLUDED_)
  6. #define AFX_COMPRESSION_H__D764BF21_0E55_11D4_8D3A_00002100A114__INCLUDED_
  8. #if _MSC_VER > 1000
  9. #pragma once
  10. #endif // _MSC_VER > 1000
  12. #include "mmsystem.h"
  13. #include "mmreg.h"  // Multimedia registration
  14. #include "msacm.h" // Audio Compression Manager
  15. #include "winsock.h"
  17. #define ADPCM      2
  18. #define TRUESPEECH 1
  19. #define MSN        0
  20. #define GSM610     3
  21. #define ALAW       4
  22. #define MULAW      5
  24. typedef struct {
  25. HACMDRIVERID hadid;
  26. WORD wFormatTag;
  27. unsigned short nBits;
  28. unsigned long lSampleRate;
  29. } FIND_DRIVER_INFO;
  31. class CCompression  
  32. {
  33. public:
  34. long UnConvert(BOOL bQuery,unsigned char* pSrcData,long bytes);
  35. BOOL PrepareSpace(BOOL bCompression);
  36. void SetDstSamples(long bytes,unsigned char* pDstData);
  37. BOOL ConvertSend(SOCKET s,SOCKADDR_IN addr);
  38. long MyConvert(BOOL bQuery,unsigned char *pDetData, long detLength);
  39. BOOL Initialize();
  40. void SelectMethod(int i);
  41. void SetWaveFormat(int channels,long samplerate,int bitspersample);
  42. void SetSrcSamples(long samples,unsigned char* pSrcData);
  43. CCompression();
  44. virtual ~CCompression();
  45. WORD wFormatTag;
  46. WAVEFORMATEX m_wfSrc;
  47. DWORD m_dwSrcSamples;
  48. DWORD m_dwSrcBytes;
  49. BYTE* m_pSrcData;
  50. WAVEFORMATEX* pwfDrv;
  51. WAVEFORMATEX* pwfPCM;
  52. HACMDRIVERID hadid;
  53. private:
  54. WAVEFORMATEX* GetDriverFormat(HACMDRIVERID hadid, WORD wFormatTag,BOOL bPCM);
  55. HACMDRIVERID FindDriver(WORD wFormatTag);
  56. DWORD dwDst2Bytes;
  57. DWORD dwDst1Bytes;
  58. DWORD dwDst1Samples;
  59. long length;
  60. long unlength;
  61. BYTE* pDst1Data;
  62. BYTE* pDst2Data;
  63. };
  65. #endif // !defined(AFX_COMPRESSION_H__D764BF21_0E55_11D4_8D3A_00002100A114__INCLUDED_)