一个vc++ direct sound播放wav文件的类.doc

一个vc+ direct sound播放wav文件的类 分类： VC+编程技术 2009-02-24 15:44 2422人阅读 评论(0) 收藏 举报 头文件#if !defined(AFX_DIRECTSOUND_H_A20FE86F_118F_11D2_9AB3_0060B0CDC13E_INCLUDED_) #define AFX_DIRECTSOUND_H_A20FE86F_118F_11D2_9AB3_0060B0CDC13E_INCLUDED_ #if _MSC_VER = 1000 #pragma once #endif / _MSC_VER = 1000 #include #include #pragma message(linking with Microsofts DirectSound library .) #pragma comment(lib, dsound.lib) class CDirectSound public: / 构造、析构函数 CDirectSound(); virtual CDirectSound(); /创建DirectSound对象 BOOL Create(LPCTSTR pszResource, CWnd * pWnd = 0); BOOL Create(UINT uResourceID, CWnd * pWnd = 0) return Create(MAKEINTRESOURCE(uResourceID), pWnd); BOOL Create(LPVOID pSoundData, CWnd * pWnd = 0); public: /操作函数 BOOL IsValid() const; void Play(DWORD dwStartPosition = 0, BOOL bLoop = FALSE); void Stop(); void Pause(); void Continue(); CDirectSound & EnableSound(BOOL bEnable = TRUE) m_bEnabled = bEnable; if( ! bEnable ) Stop(); return * this; BOOL IsEnabled() const return m_bEnabled; protected: /设置声音数据缓冲区 BOOL SetSoundData(LPVOID pSoundData, DWORD dwSoundSize); /创建DirectSoundBuffer BOOL CreateSoundBuffer(WAVEFORMATEX * pcmwf); /获取Wave数据 BOOL GetWaveData(void * pRes, WAVEFORMATEX * & pWaveHeader, void * & pbWaveData, DWORD & cbWaveSize); private: /声音数据 LPVOID m_pTheSound; /数据大小 DWORD m_dwTheSound; /DirectSoundBuffer指针 LPDIRECTSOUNDBUFFER m_pDsb; BOOL m_bEnabled; /DirectSound对象 static LPDIRECTSOUND m_lpDirectSound; static DWORD m_dwInstances; ; #endif / !defined(AFX_DIRECTSOUND_H_A20FE86F_118F_11D2_9AB3_0060B0CDC13E_INCLUDED_) 类的主体1. #includestdafx.h 2. #includeDirectSound.h 3. 4. /ThefollowingmacroisdefinedsinceDirectX5,butwillworkwith 5. /olderversionstoo. 6. #ifndefDSBLOCK_ENTIREBUFFER 7. #defineDSBLOCK_ENTIREBUFFER0x00000002 8. #endif 9. 10. #ifdef_DEBUG 11. #undefTHIS_FILE 12. staticcharTHIS_FILE=_FILE_; 13. #definenewDEBUG_NEW 14. #endif 15. 16. staticvoidDSError(HRESULThRes) 17. switch(hRes) 18. caseDS_OK:TRACE0(NOERROR/n);break; 19. caseDSERR_ALLOCATED:TRACE0(ALLOCATED/n);break; 20. caseDSERR_INVALIDPARAM:TRACE0(INVALIDPARAM/n);break; 21. caseDSERR_OUTOFMEMORY:TRACE0(OUTOFMEMORY/n);break; 22. caseDSERR_UNSUPPORTED:TRACE0(UNSUPPORTED/n);break; 23. caseDSERR_NOAGGREGATION:TRACE0(NOAGGREGATION/n);break; 24. caseDSERR_UNINITIALIZED:TRACE0(UNINITIALIZED/n);break; 25. caseDSERR_BADFORMAT:TRACE0(BADFORMAT/n);break; 26. caseDSERR_ALREADYINITIALIZED:TRACE0(ALREADYINITIALIZED/n);break; 27. caseDSERR_BUFFERLOST:TRACE0(BUFFERLOST/n);break; 28. caseDSERR_CONTROLUNAVAIL:TRACE0(CONTROLUNAVAIL/n);break; 29. caseDSERR_GENERIC:TRACE0(GENERIC/n);break; 30. caseDSERR_INVALIDCALL:TRACE0(INVALIDCALL/n);break; 31. caseDSERR_OTHERAPPHASPRIO:TRACE0(OTHERAPPHASPRIO/n);break; 32. caseDSERR_PRIOLEVELNEEDED:TRACE0(PRIOLEVELNEEDED/n);break; 33. default:TRACE1(%lu/n,hRes);break; 34. 35. 36. 37. / 38. /Construction/Destruction 39. / 40. 41. LPDIRECTSOUNDCDirectSound:m_lpDirectSound; 42. DWORDCDirectSound:m_dwInstances; 43. 44. 45. CDirectSound:CDirectSound() 46. 47. m_lpDirectSound=0; 48. m_pDsb=0; 49. m_pTheSound=0; 50. m_dwTheSound=0; 51. m_bEnabled=TRUE; 52. 53. +m_dwInstances; 54. 55. 56. CDirectSound:CDirectSound() 57. 58. if(m_pDsb) 59. m_pDsb-Release(); 60. 61. if(!-m_dwInstances&m_lpDirectSound) 62. m_lpDirectSound-Release(); 63. m_lpDirectSound=0; 64. 65. 66. 67. BOOLCDirectSound:Create(LPCTSTRpszResource,CWnd*pWnd) 68. 69. / 70. /loadresource 71. HINSTANCEhApp=:GetModuleHandle(0); 72. ASSERT(hApp); 73. 74. HRSRChResInfo=:FindResource(hApp,pszResource,TEXT(WAVE); 75. if(hResInfo=0) 76. returnFALSE; 77. 78. HGLOBALhRes=:LoadResource(hApp,hResInfo); 79. if(hRes=0) 80. returnFALSE; 81. 82. LPVOIDpTheSound=:LockResource(hRes); 83. if(pTheSound=0) 84. returnFALSE; 85. 86. returnCreate(pTheSound,pWnd); 87. 88. 89. 90. BOOLCDirectSound:Create(LPVOIDpSoundData,CWnd*pWnd) 91. /获取窗口句柄 92. if(pWnd=0) 93. pWnd=AfxGetApp()-GetMainWnd(); 94. ASSERT(pWnd!=0); 95. ASSERT(:IsWindow(pWnd-GetSafeHwnd(); 96. ASSERT(pSoundData!=0); 97. /创建DirectSound对象 98. if(m_lpDirectSound=0) 99. 100. HRESULThRes=DS_OK; 101. shortnRes=0; 102. do 103. if(nRes) 104. :Sleep(500); 105. hRes=:DirectSoundCreate(0,&m_lpDirectSound,0); 106. +nRes; 107. while(nResSetCooperativeLevel(pWnd-GetSafeHwnd(),DSSCL_NORMAL); 113. 114. ASSERT(m_lpDirectSound!=0); 115. /准备数据 116. WAVEFORMATEX*pcmwf; 117. if(!GetWaveData(pSoundData,pcmwf,m_pTheSound,m_dwTheSound)| 118. !CreateSoundBuffer(pcmwf)| 119. !SetSoundData(m_pTheSound,m_dwTheSound) 120. returnFALSE; 121. 122. returnTRUE; 123. 124. 125. 126. BOOLCDirectSound:GetWaveData(void*pRes,WAVEFORMATEX*&pWaveHeader,void*&pbWaveData,DWORD&cbWaveSize) 127. pWaveHeader=0; 128. pbWaveData=0; 129. cbWaveSize=0; 130. 131. DWORD*pdw=(DWORD*)pRes; 132. DWORDdwRiff=*pdw+; 133. DWORDdwLength=*pdw+; 134. DWORDdwType=*pdw+; 135. /检验“RIFF”标志 136. if(dwRiff!=mmioFOURCC(R,I,F,F) 137. returnFALSE; 138. /检验“WAVE”标志 139. if(dwType!=mmioFOURCC(W,A,V,E) 140. returnFALSE; 141. /指向声音数据 142. DWORD*pdwEnd=(DWORD*)(BYTE*)pdw+dwLength-4); 143. /查找声音数据 144. while(pdwpdwEnd) 145. 146. dwType=*pdw+; 147. dwLength=*pdw+; 148. switch(dwType) 149. casemmioFOURCC(f,m,t,): 150. if(!pWaveHeader) 151. 152. if(dwLengthCreateSoundBuffer(&dsbdesc,&m_pDsb,0) 187. 188. /Failed. 189. DSError(hRes); 190. m_pDsb=0; 191. returnFALSE; 192. 193. 194. returnTRUE; 195. 196. 197. 198. BOOLCDirectSound:SetSoundData(void*pSoundData,DWORDdwSoundSize) 199. LPVOIDlpvPtr1; 200. DWORDdwBytes1; 201. /获取一块内存 202. HRESULThr=m_pDsb-Lock(0,0,&lpvPtr1,&dwBytes1,0,0,DSBLOCK_ENTIREBUFFER); 203. /如果失败，重新分配 204. if(DSERR_BUFFERLOST=hr) 205. 206. m_pDsb-Restore(); 207. hr=m_pDsb-Lock(0,0,&lpvPtr1,&dwBytes1,0,0,DSBLOCK_ENTIREBUFFER); 208. 209. if(DS_OK=hr) 210. /复制声音数据 211. :CopyMemory(lpvPtr1,pSoundData,dwBytes1); 212. /释放锁定的内存块 213. hr=m_pDsb-Unlock(lpvPtr1,dwBytes1,0,0); 214. if(DS_OK=hr) 215. returnTRUE; 216. 217. returnFALSE; 218. 219. 220. voidCDirectSound:Play(DWORDdwStartPosition,BOOLbLoop) 221. 222. if(!IsValid()|!IsEnabled() 223. return; 224. /播放位置边界检验 225. if(dwStartPositionm_dwTheSound) 226. dwStartPosition=m_dwTheSound; 227. /重新设置播放位置 228. m_pDsb-SetCurre