Category

Development Platform
Home > SourceCode/Document > Embeded-SCM Develop > Windows CE > View Code
AudioFile.cpp
Package: 111.rar　[view]
Upload User: mony888
Upload Date: 2022-07-26
Package Size: 1247k
Code Size: 2k
Category:

Windows CE

Development Platform:

Visual C++

AudioFile.cpp：Code Content
  2. #include "stdafx.h"
  3. //#include "AudioFile.h"
  5. AudioFile::AudioFile()
  6. {
  7. m_pFileHdr = NULL;
  8. }
  10. AudioFile::~AudioFile()
  11. {
  12. }
  14. BOOL AudioFile::ToClos()
  15. {
  16. return CloseHandle(m_fh);
  17. }
  19. MMRESULT AudioFile::ToOpen(LPCTSTR lpFileName, PVOID pFilehdr, DWORD cbHdrSiz, OpenMod Flags)
  20. {
  21. DWORD cbBytsDone;
  23. if (READ == Flags)
  24. {
  25. m_fh = CreateFile(lpFileName, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_READONLY, NULL);
  26. if (INVALID_HANDLE_VALUE == m_fh)
  27. {
  28. return MMSYSERR_ERROR;
  29. }
  30. if (!ReadFile(m_fh, pFilehdr, cbHdrSiz, &cbBytsDone, NULL) || cbBytsDone < cbHdrSiz)
  31. {
  32. return MMSYSERR_ERROR;
  33. }
  34. return MMSYSERR_NOERROR;
  35. }
  36. else if (WRIT == Flags)
  37. {
  38. m_fh = CreateFile(lpFileName, GENERIC_WRITE, FILE_SHARE_READ, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
  39. if (INVALID_HANDLE_VALUE == m_fh)
  40. {
  41. return MMSYSERR_ERROR;
  42. }
  43. if (!WriteFile(m_fh, pFilehdr, cbHdrSiz, &cbBytsDone, NULL) || cbBytsDone < cbHdrSiz)
  44. {
  45. return MMSYSERR_ERROR;
  46. }
  47. return MMSYSERR_NOERROR;
  48. }
  49. else
  50. {
  51. return MMSYSERR_INVALPARAM;
  52. }
  53. }
  55. MMRESULT AudioFile::ToRead(PBYTE pBuf, DWORD cbSiz2Read, PDWORD pcbSizRead)
  56. {
  57. if (!ReadFile(m_fh, pBuf, cbSiz2Read, pcbSizRead, NULL))
  58. {
  59. return MMSYSERR_ERROR;
  60. }
  61. return MMSYSERR_NOERROR;
  62. }
  64. MMRESULT AudioFile::ToWrit(PBYTE pData, DWORD cbSiz2Writ, PDWORD pcbSizWrot)
  65. {
  66. if (!WriteFile(m_fh, pData, cbSiz2Writ, pcbSizWrot, NULL) || *pcbSizWrot < cbSiz2Writ)
  67. {
  68. return MMSYSERR_ERROR;
  69. }
  70. return MMSYSERR_NOERROR;
  71. }