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VideoCapture.cpp
资源名称：网络视频电话系统.rar　[点击查看]
上传用户：oldpeter23
上传日期：2013-01-09
资源大小：1111k
文件大小：3k
源码类别：

IP电话/视频会议

开发平台：

Visual C++

VideoCapture.cpp：源码内容
  1. //NetTalk
  2. /*------------------------------------------------------------------------------*
  3.  =============================
  4.    模块名称: VideoCapture.cpp
  5.  =============================
  6.  
  7.  [版权]
  8.  
  9.    2000-2002  115软件工厂  版权所有
  10.                                               
  11. *------------------------------------------------------------------------------*/
  12. #include "WndX.h"
  13. #include <vfw.h>
  14. #include "VideoCapture.h"
  16. #include "AVIOMgr.h"
  18. #pragma comment(lib,"vfw32")
  20. /*------------------------------------------------------------------------------*/
  22. CVideoCapture::CVideoCapture()
  24. {
  26. m_hWndCap = NULL;
  30. }
  31. /*------------------------------------------------------------------------------*/
  32. CVideoCapture::~CVideoCapture()
  33. {
  34. Destroy();
  35. }
  36. /*------------------------------------------------------------------------------*/
  37. BOOL CVideoCapture::Init()
  38. {
  40. BOOL bRet = FALSE;
  41. int i;
  42. Destroy();
  44. m_hWndCap=capCreateCaptureWindow(0,0,0,0,0,0,0,0);
  45. if(!m_hWndCap)
  46. goto RET;
  47. for(i=0;i<MAX_VFW_DEVICES;i++)
  48. m_DriverIndex[i]=-1;
  50. capSetUserData(m_hWndCap,this);
  53. bRet=TRUE;
  54. RET:
  56. return bRet;
  57. }
  59. /*------------------------------------------------------------------------------*/
  61. HWND CVideoCapture::GetCapWindow()
  62. {
  63. return m_hWndCap;
  64. }
  66. /*------------------------------------------------------------------------------*/
  68. VOID CVideoCapture::Destroy()
  69. {
  71. if (m_hWndCap)
  72. {
  73. if(IsWindow(m_hWndCap))
  74. capCaptureAbort(m_hWndCap);
  75. capSetCallbackOnVideoStream(m_hWndCap, NULL);
  76. DisconnectFromDriver();
  77. }
  78. DestroyWindow(m_hWndCap);
  79. m_hWndCap = NULL;
  80. }
  82. /*------------------------------------------------------------------------------*/
  83. //连接设备驱动
  84. BOOL CVideoCapture::ConnectToDriver(SHORT DriverIndex)
  85. {
  86. BOOL bRet = FALSE;
  87. CAPTUREPARMS CapParms = {0};
  90. if(DriverIndex>=MAX_VFW_DEVICES)
  91. {
  93. goto RET;
  94. }
  97. if (m_hWndCap==NULL||m_DriverIndex[DriverIndex]==-1)
  98. goto RET;
  99. capCaptureAbort(m_hWndCap);
  101. if(!capDriverConnect(m_hWndCap, m_DriverIndex[DriverIndex]))
  102. goto RET;
  105. capCaptureGetSetup(m_hWndCap,&CapParms,sizeof(CapParms));
  106. CapParms.vKeyAbort=0;
  107. CapParms.fAbortLeftMouse = FALSE;
  108. CapParms.fAbortRightMouse = FALSE;
  109. CapParms.fYield = TRUE;
  110. CapParms.fCaptureAudio=FALSE;
  111. CapParms.wPercentDropForError = 100;
  112. capCaptureSetSetup(m_hWndCap,&CapParms,sizeof(CapParms));
  113. bRet=TRUE;
  114. RET:
  116. return bRet;
  117. }
  120. /*------------------------------------------------------------------------------*/
  123. //得到设备数
  124. int CVideoCapture::GetDriverNum()
  125. {
  126. int iDriverNum=0;
  127. char    achDeviceVersion[80] ;
  128.     char    achDeviceAndVersion[160] ;
  129. for(int i=0;i<MAX_VFW_DEVICES;i++)
  130. {
  131. if(capGetDriverDescription(i,
  132. achDeviceAndVersion,
  133. sizeof(achDeviceAndVersion),
  134.             achDeviceVersion,
  135. sizeof(achDeviceVersion)))//buf fixed:the 24 param should not be null in win98
  136. {
  137. m_DriverIndex[iDriverNum]=(SHORT)i;
  138. iDriverNum++;
  139. }
  140. }
  141. return iDriverNum;
  142. }
  143. /*------------------------------------------------------------------------------*/
  144. //断开与驱动程序的连接
  145. BOOL CVideoCapture::DisconnectFromDriver()
  146. {
  147. BOOL bRet=FALSE;
  148. if(!m_hWndCap)
  149. goto RET;
  150. if(!capDriverDisconnect(m_hWndCap))
  151. goto RET;
  153. bRet=TRUE;
  154. RET:
  155. return bRet;
  156. }