视频通讯demo源码

以下的anychat视频通讯系统中的部分回调函数源码：

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/**
 * 视频数据回调函数
 */
void CALLBACK VideoData_CallBack(DWORD dwUserid, LPVOID lpBuf, DWORD dwLen, BITMAPINFOHEADER bmiHeader, LPVOID lpUserValue)
{
 CBRAnyChatSDKDemoDlg* pDemoDlg = (CBRAnyChatSDKDemoDlg*)lpUserValue;
 if(pDemoDlg)
  pDemoDlg->DrawUserVideo(dwUserid,lpBuf,dwLen,bmiHeader);
}
/**
 * 音频数据回调函数
 */
void CALLBACK AudioData_CallBack(DWORD dwUserid, LPVOID lpBuf, DWORD dwLen, WAVEFORMATEX waveFormatEx, LPVOID lpUserValue)
{
 CBRAnyChatSDKDemoDlg* pDemoDlg = (CBRAnyChatSDKDemoDlg*)lpUserValue;
 if(pDemoDlg)
 {
  // do something ...
 }
}

/**
 * 音量更改回调函数
 */
void CALLBACK VolumeChange_CallBack(BRAC_AudioDevice device, DWORD dwCurrentVolume, LPVOID lpUserValue)
{
 CBRAnyChatSDKDemoDlg* pDemoDlg = (CBRAnyChatSDKDemoDlg*)lpUserValue;
 if(pDemoDlg)
 {
  if(device == BRAC_AD_WAVEIN)
   pDemoDlg->OnWaveInVolumeChange(dwCurrentVolume);
  else
   pDemoDlg->OnWaveOutVolumeChange(dwCurrentVolume);
 }
}
// 透明通道数据回调函数定义
void CALLBACK TransBuffer_CallBack(DWORD dwUserid, LPBYTE lpBuf, DWORD dwLen, LPVOID lpUserValue)
{
 CBRAnyChatSDKDemoDlg* pDemoDlg = (CBRAnyChatSDKDemoDlg*)lpUserValue;
 if(pDemoDlg)
 {
  CString strNotify;
  strNotify.Format("TransBuffer_CallBack:dwUserid-%d, bufSize-%d",dwUserid,dwLen);
  pDemoDlg->AppendLogString(strNotify);
 }
}

// 透明通道数据扩展回调函数定义
void CALLBACK TransBufferEx_CallBack(DWORD dwUserid, LPBYTE lpBuf, DWORD dwLen, DWORD wParam, DWORD lParam, DWORD dwTaskId, LPVOID lpUserValue)
{
 CBRAnyChatSDKDemoDlg* pDemoDlg = (CBRAnyChatSDKDemoDlg*)lpUserValue;
 if(pDemoDlg)
 {
  BOOL bSuccess = FALSE;
  if(dwLen > 1000)
  {
   bSuccess = lpBuf[1000] == 'Y' ? TRUE : FALSE;
  }
  CString strNotify;
  strNotify.Format("TransBufferEx_CallBack:dwUserid-%d, bufSize-%d,verify:%s",dwUserid,dwLen,bSuccess ? "Success" : "Fail");
  pDemoDlg->AppendLogString(strNotify);
 } 
}
// 文件传输回调函数定义
void CALLBACK TransFile_CallBack(DWORD dwUserid, LPCTSTR lpFileName, LPCTSTR lpTempFilePath, DWORD dwFileLength, DWORD wParam, DWORD lParam, DWORD dwTaskId, LPVOID lpUserValue)
{
 CBRAnyChatSDKDemoDlg* pDemoDlg = (CBRAnyChatSDKDemoDlg*)lpUserValue;
 if(pDemoDlg)
 {
  CString strNotify;
  strNotify.Format("TransFile_CallBack:dwUserid-%d, lpFileName-%s, lpTempFilePath-%s",dwUserid,lpFileName,lpTempFilePath);
  pDemoDlg->AppendLogString(strNotify);
 }
}

// 录像、快照任务完成回调函数定义
void CALLBACK RecordSnapShot_CallBack(DWORD dwUserid, LPCTSTR lpFileName, DWORD dwParam, BOOL bRecordType, LPVOID lpUserValue)
{
 CBRAnyChatSDKDemoDlg* pDemoDlg = (CBRAnyChatSDKDemoDlg*)lpUserValue;
 if(pDemoDlg)
 {
  CString strNotify;
  strNotify.Format("%s CallBack:dwUserid-%d, FilePathName-%s",bRecordType?"Record":"SnapShot",(int)dwUserid,lpFileName);
  pDemoDlg->AppendLogString(strNotify);
 }
}

// SDK Filter 通信数据回调函数定义
void CALLBACK SDKFilterData_CallBack(LPBYTE lpBuf, DWORD dwLen, LPVOID lpUserValue)
{
 CBRAnyChatSDKDemoDlg* pDemoDlg = (CBRAnyChatSDKDemoDlg*)lpUserValue;
 if(pDemoDlg)
 {
  CString strNotify;
  strNotify.Format("SDK Filter CallBack:%s",lpBuf);
  pDemoDlg->AppendLogString(strNotify);
 }
}

/**
 * 绘制用户视频
 * 数据来源于回调函数
 * @param dwUserid 用户ID号
 * @param lpBuf 视频数据缓冲区
 * @param dwLen 缓冲区大小
 * @param bmiHeader 视频缓冲区的头信息，包含了视频的大小、颜色位数等信息
 */
void CBRAnyChatSDKDemoDlg::DrawUserVideo(DWORD dwUserid, LPVOID lpBuf, DWORD dwLen, BITMAPINFOHEADER bmiHeader)
{
 // 根据用户ID号找到合适的显示区域
 DWORD dwSite = -1;
 for(INT i=0; i {
  if(m_iUserID[i] == (INT)dwUserid)
  {
   dwSite = i;
   break;
  }
 }
 if(dwSite == -1)
  return;

 CRect dispRect = m_UserRect[dwSite];

 //构建Bitmap 
 BITMAPINFOHEADER  *lpbmi = (BITMAPINFOHEADER*)malloc(sizeof(BITMAPINFOHEADER)+dwLen); 
 ZeroMemory(lpbmi,sizeof(BITMAPINFOHEADER)+dwLen);
    memcpy((LPBYTE)lpbmi,&bmiHeader,sizeof(bmiHeader));
 memcpy(((LPBYTE)lpbmi+sizeof(BITMAPINFOHEADER)),lpBuf,dwLen); 

 HDC hdc = ::GetDC(m_hWnd);
 HDC dcMem = ::CreateCompatibleDC(hdc); 
 HBITMAP hBitmap = CreateDIBitmap(hdc,lpbmi,CBM_INIT,(LPBYTE)lpbmi+sizeof(BITMAPINFOHEADER),(LPBITMAPINFO)lpbmi,DIB_RGB_COLORS); 
 //绘图 
 HBITMAP holdbm = (HBITMAP)SelectObject(dcMem,hBitmap); 
 ::SetStretchBltMode(hdc,COLORONCOLOR);
 ::StretchBlt(hdc,dispRect.left,dispRect.top,dispRect.Width(),dispRect.Height(),dcMem,0,0,bmiHeader.biWidth,bmiHeader.biHeight,SRCCOPY);

 SelectObject(dcMem,holdbm); 
 ::DeleteDC(dcMem);
 ::DeleteObject(hBitmap);
 ::ReleaseDC(m_hWnd,hdc);
 free(lpbmi);
 lpbmi = NULL;
}

BOOL CBRAnyChatSDKDemoDlg::OnInitDialog()
{
 CDialog::OnInitDialog();

 // IDM_ABOUTBOX must be in the system command range.
 ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
 ASSERT(IDM_ABOUTBOX < 0xF000);

 CMenu* pSysMenu = GetSystemMenu(FALSE);
 if (pSysMenu != NULL)
 {
  CString strAboutMenu;
  strAboutMenu.LoadString(IDS_ABOUTBOX);
  if (!strAboutMenu.IsEmpty())
  {
   pSysMenu->AppendMenu(MF_SEPARATOR);
   pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
  }
 }

 SetIcon(m_hIcon, TRUE);   // Set big icon
 SetIcon(m_hIcon, FALSE);  // Set small icon
 
 // 初始化每个视频显示位置信息
 GetDlgItem(IDC_STATIC_USER0)->ShowWindow(SW_HIDE);
 GetDlgItem(IDC_STATIC_USER0)->GetClientRect(m_UserRect[0]); 
 GetDlgItem(IDC_STATIC_USER0)->ClientToScreen(m_UserRect[0]);
 ScreenToClient(m_UserRect[0]);

 GetDlgItem(IDC_STATIC_USER1)->ShowWindow(SW_HIDE);
 GetDlgItem(IDC_STATIC_USER1)->GetClientRect(m_UserRect[1]); 
 GetDlgItem(IDC_STATIC_USER1)->ClientToScreen(m_UserRect[1]);
 ScreenToClient(m_UserRect[1]);

 GetDlgItem(IDC_STATIC_USER2)->ShowWindow(SW_HIDE);
 GetDlgItem(IDC_STATIC_USER2)->GetClientRect(m_UserRect[2]); 
 GetDlgItem(IDC_STATIC_USER2)->ClientToScreen(m_UserRect[2]);
 ScreenToClient(m_UserRect[2]);

 GetDlgItem(IDC_STATIC_USER3)->ShowWindow(SW_HIDE);
 GetDlgItem(IDC_STATIC_USER3)->GetClientRect(m_UserRect[3]); 
 GetDlgItem(IDC_STATIC_USER3)->ClientToScreen(m_UserRect[3]);
 ScreenToClient(m_UserRect[3]);

 // 隐藏录像状态标志
 GetDlgItem(IDC_STATIC_RECORDSTATE0)->ShowWindow(SW_HIDE);
 GetDlgItem(IDC_STATIC_RECORDSTATE1)->ShowWindow(SW_HIDE);
 GetDlgItem(IDC_STATIC_RECORDSTATE2)->ShowWindow(SW_HIDE);
 GetDlgItem(IDC_STATIC_RECORDSTATE3)->ShowWindow(SW_HIDE);
 
 for(INT i=0; i {
  m_iUserID[i] = -1;
 }
 
 m_dwTransTaskId = -1;

 m_iPort = 8906;
 m_iRoomId = 1;
 SetDlgItemText(IDC_IPADDRESS_SERVER,"demo.anychat.cn");
 SetDlgItemText(IDC_EDIT_USERNAME,"AnyChat5");
 UpdateData(FALSE);
 return TRUE;  // return TRUE  unless you set the focus to a control
}

void CBRAnyChatSDKDemoDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
 if ((nID & 0xFFF0) == IDM_ABOUTBOX)
 {
  CAboutDlg dlgAbout;
  dlgAbout.DoModal();
 }
 else
 {
  CDialog::OnSysCommand(nID, lParam);
 }
}

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.