Full Screen in DirectShow
Author
Hi Guys,
Need help in resolving Fullscreen Video in Directshow. I am building graph for playing FlV files by adding appropriate filters. I am connecting all the filters by calling IGraphBuiler::Render(). In this case how can I render the output video in fullscreen?
I found out that IVideowindow will b useful in this case. But its helpful only if we call IMediaControl::renderfile(/*Filename*/) without building our own graph.
code snippet for your reference:
//After adding all the filters
pGraph->QueryInterface(IID_IVideoWindow,
(LPVOID *)&pVideoWindow);
pVideoWindow->put_FullScreenMode(OATRUE);
//Getting the outpin of the source filter and connecting the filters in the whole graph
IPin *pOutPin = 0;
hr = GetOutPin(pSourceFilter, &pOutPin);
hr = pGraph->Render(pOutPin);
pOutPin->Release();
hr = pMediaControl->Run();
The above code is not working. Wud be helpeful on your input in this problem.
Jeykumar S
Here's an ancient piece of code of mine which should do what you want. I couldn't explain how it works anymore, because after mucking around with DShow I figured VfW was far more convenient and never looked back. Hopefully you can distill the information you need.
#pragma comment(lib, "strmiids.lib")#pragma comment(lib, "quartz.lib")#include <dshow.h> //.. int Video::Play(const std::string& pFile){ IGraphBuilder* pGraph = NULL; IVideoWindow* pWin = NULL; IMediaControl* pControl = NULL; IMediaEvent* pEvent = NULL; std::string _file = MEDIA_PATH + pFile; // Initialize the COM library. HRESULT hr = CoInitialize(NULL); if (FAILED(hr)) return 1; // Create the filter graph manager and query for interfaces. hr = CoCreateInstance(CLSID_FilterGraph, NULL, CLSCTX_INPROC_SERVER, IID_IGraphBuilder, (void **)&pGraph); if (FAILED(hr)) return 1; // Get interfaces hr = pGraph->QueryInterface(IID_IMediaControl, (void **)&pControl); hr = pGraph->QueryInterface(IID_IMediaEvent, (void **)&pEvent); hr = pGraph->QueryInterface(IID_IVideoWindow, (void **)&pWin); // Build the graph. size_t _size = mbstowcs(NULL, _file.c_str(), 0) + 2; // Add 2 for ZT wchar_t* _wfile = new wchar_t[_size+2]; _size = mbstowcs(_wfile, _file.c_str(), _file.length()+1); // Add 1 for ZT hr = pGraph->RenderFile(_wfile, NULL); delete[] _wfile; pWin->put_Owner((OAHWND)DXCore::WindowInfo.window); pWin->put_WindowStyle(WS_CHILD | WS_CLIPSIBLINGS); DWORD _left = DXCore::ScreenInfo.left; DWORD _top = DXCore::ScreenInfo.top; pWin->SetWindowPosition(_left, _top, DXCore::ScreenInfo.width, DXCore::ScreenInfo.height); if (SUCCEEDED(hr)) { // Run the graph. hr = pControl->Run(); if (SUCCEEDED(hr)) { // Wait for completion. long evCode; pEvent->WaitForCompletion(INFINITE, &evCode); } } pControl->Release(); pEvent->Release(); pWin->Release(); pGraph->Release(); CoUninitialize(); return 0;}
Author
Hey Thanks your reply man.. but unfortunately its not working with my case :(. Even this renders the media file by calling RenderFile(). But in my case I am building my own graph.
I didnt get the DXCore Base in your code!!! It just tries to fill the Video in the entire window of the Handle given. But I couldnt figure out how to bring full screen????
I didnt get the DXCore Base in your code!!! It just tries to fill the Video in the entire window of the Handle given. But I couldnt figure out how to bring full screen????
This topic is closed to new replies.
Advertisement
Popular Topics
Advertisement
