Hr = OleCreatePropertyFrame(ghwndApp, 30, 30, NULL, 1,ĭisplaying a Filter's Property Pages on MSDN should be even of more help for you (you already have IBaseFilter interface pointer in your code snippet in the question). Hr = gcap.pVCap->QueryInterface(IID_ISpecifyPropertyPages, AMCap has relevant code for this as well: else if(id - MENU_DIALOG0 = gcap.iVCapDialogPos) With DirectShow you would typically pop up configuration interface with ISpecifyPropertyPages and OleCreatePropertyFrame. IID_IAMVfwCaptureDialogs, (void **)&gcap.pDlg) Hr = gcap.pBuilder->FindInterface(&PIN_CATEGORY_CAPTURE, up dialogs for legacy VfW capture drivers, since only those have dialogs NOTE: Only the VfW capture filter supports this. Note AMCap source comment: // we use this interface to bring up the 3 dialogs Then I doubt that AMCap uses exactly the code path you mentioned in the question. Presumably you interact with cameras via DirectShow (well, it does not make much sense to use VFW, esp. If it is DirectShow then you are basically not interested in VFW dialogs.
You can also individually enable and disable Red, Green, and Blue shades to add more variations to the filters. If it is Video for Windows, then you should look into VFW API on dialog interface. During the video recording, you can instantly add Black & White and Sepia filters to the video. In your Qt/OpenCV application what is the API used and what exactly you have for given web camera. Hr = pVfw->ShowDialog(VfwCaptureDialog_Source, HWND(this->winId())) įirst of all, you skipped a really important part. If (S_OK = pVfw->HasDialog(VfwCaptureDialog_Source)) Check if the device supports this dialog box. Hr = cap->QueryInterface(IID_IAMVfwCaptureDialogs, (void**)&pVfw) Hr = mon?mon->BindToObject(nullptr,nullptr,IID_IBaseFilter, (void**)&cam):0 Hr = cams?cams->Next (1, &mon, nullptr):0 Hr = devs?devs->CreateClassEnumerator (CLSID_VideoInputDeviceCategory, &cams, 0):0 Hr = CoCreateInstance (CLSID_SystemDeviceEnum, nullptr, CLSCTX_INPROC, IID_ICreateDevEnum, (void **) &devs) Hr = graph->QueryInterface(IID_IMediaEvent, (LPVOID *) &mediaEvent) Hr = graph->QueryInterface( IID_IMediaControl, (void **)&ctrl ) Hr = CoCreateInstance( CLSID_FilterGraph, 0, CLSCTX_INPROC,IID_IGraphBuilder, (void **)&graph )
Attendant Pro has call recording functionality built into it. The error I get from this code is 1170 : "The property set specified does not exist on the object" //libs -lDxva2 -lstrmiids -lvfw32 -lole32 -loleaut32 This means that calls made with Skype for Business (Lync) or Attendant Pro will be cut off. The index is from Qt where can I get nice list of camera names. In opencv just camera index is used to select proper camera. Can you help me to get this code working for given webcam (multiple camera support is required)? I use Qt and OpenCV while working with camera. For now, I found out that the dialog is from vfw and it can be activated from dshow api. I want to allow the user to change camera settings (VfwCaptureDialog_Source) as it is common in skype or amcap application.
I am doing a windows based app where I use a camera.