захват видео с web camera, DirectX SDK int VS2005 -> Форум на Исходниках.RU [Powered by Invision Power Board]

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HRESULT hr;

IGraphBuilder *pGraph = NULL; //менеджер графа фильтров

ICaptureGraphBuilder2 *pBuild = NULL; //граф фильтра аудио\видео захвата

IBaseFilter *pCapture = NULL; //видеофильтр

ICreateDevEnum *pDevEnum = NULL; //счетчик для определенной категории устройств

IEnumMoniker* pEnum = NULL;

IMoniker* pMoniker = NULL;

IMediaControl * pMediaControl(NULL);

IMediaEventEx * pEvent(NULL);

//Инициализируем библиотеку COM

hr = CoInitializeEx(NULL, COINIT_APARTMENTTHREADED);

if(SUCCEEDED(hr))

{

//Создание графа-фильтров - Create the Capture Graph Builder

hr = CoCreateInstance(CLSID_CaptureGraphBuilder2, NULL, CLSCTX_INPROC_SERVER, IID_ICaptureGraphBuilder2, (void**)&pBuild );

if (SUCCEEDED(hr))

{

//Создание менеджера графа фильтров - Create the Filter Graph Manager

hr = CoCreateInstance(CLSID_FilterGraph, 0, CLSCTX_INPROC_SERVER, IID_IGraphBuilder, (void**)&pGraph);

if (SUCCEEDED(hr))

{

//Initialize the Capture Graph Builder

pBuild->SetFiltergraph(pGraph);

//Find system device enumerator to find a video capture device.

hr = CoCreateInstance(CLSID_SystemDeviceEnum, 0, CLSCTX_INPROC_SERVER, IID_ICreateDevEnum, (LPVOID*)&pDevEnum);

if(SUCCEEDED(hr))

{

//создает счетчик для определенной категории устройств

hr = pDevEnum->CreateClassEnumerator(CLSID_VideoInputDeviceCategory, &pEnum, 0);

if(SUCCEEDED(hr))

{

if( pEnum->Next(1, &pMoniker,0) == S_OK )

{

hr = pMoniker->BindToObject(0, 0, IID_IBaseFilter, (void **)&pCapture);

//hr = pGraph->AddFilter(pCapture, L"CaptureFilter");

//pGraph->RenderFile(L"D:\\Wildlife.wmv", NULL); //чтение файла - работает

if(SUCCEEDED(hr))

{

pGraph->AddFilter(pCapture, L"Capture Filter");

hr = pBuild->RenderStream(&PIN_CATEGORY_PREVIEW, &MEDIATYPE_Video, pCapture, NULL, NULL); //3,4,5 Параметры - фильтры, которые объединены в граф

pDevEnum->Release();

pEnum->Release();

pMoniker->Release();

// Specify the owner window.

IVideoWindow *pVidWin = NULL;

OAHWND hWnd;

pGraph->QueryInterface(IID_IVideoWindow, (void **)&pVidWin);

pVidWin->put_Owner((OAHWND)hWnd);

pVidWin->put_WindowStyle( WS_CHILD | WS_CLIPSIBLINGS );

pVidWin->put_Left(0);

pVidWin->put_Top(0);

pVidWin->put_Width(1500);

pVidWin->put_Height(1000);

// Set the owner window to receive event notices.

pGraph->QueryInterface(IID_IMediaEventEx, (void **)&pEvent);

pEvent->SetNotifyWindow((OAHWND)hWnd, 0, 0);

// Run the graph.

pGraph->QueryInterface(IID_IMediaControl, (void **)&pMediaControl);

pMediaControl->Run();

}

else

pBuild->Release();

}