HRESULT PlayMovieInWindow(LPTSTR szFile)
{
USES_CONVERSION;
WCHAR wFile[MAX_PATH];
HRESULT hr;
// Check input string
if (szFile == NULL)
return E_POINTER;
// Clear open dialog remnants before calling RenderFile()
UpdateWindow(ghApp);
// Convert filename to wide character string
wcsncpy(wFile, T2W(szFile), NUMELMS(wFile)-1);
wFile[MAX_PATH-1] = 0;
// Get the interface for DirectShow's GraphBuilder
JIF(CoCreateInstance(CLSID_FilterGraph, NULL, CLSCTX_INPROC_SERVER,
IID_IGraphBuilder, (void **)&pGB));
if(SUCCEEDED(hr))
{
// Create the Video Mixing Renderer and add it to the graph
JIF(InitializeWindowlessVMR());
// Have the graph builder construct its the appropriate graph automatically
JIF(pGB->RenderFile(wFile, NULL));
// QueryInterface for DirectShow interfaces
JIF(pGB->QueryInterface(IID_IMediaControl, (void **)&pMC));
JIF(pGB->QueryInterface(IID_IMediaEventEx, (void **)&pME));
JIF(pGB->QueryInterface(IID_IMediaSeeking, (void **)&pMS));
// Is this an audio-only file (no video component)?
if (CheckVideoVisibility())
{
JIF(InitVideoWindow(1, 1));
}
else
{
// This sample requires a video clip to be loaded
Msg(TEXT("This sample requires media with a video component. ")
TEXT("Please select another file."));
return E_FAIL;
}
// Have the graph signal event via window callbacks for performance
JIF(pME->SetNotifyWindow((OAHWND)ghApp, WM_GRAPHNOTIFY, 0));
// Add the bitmap (static image or dynamic text) to the VMR's input
if (g_dwTickerFlags & MARK_STATIC_IMAGE)
{
hr = BlendApplicationImage(ghApp);
if (FAILED(hr))
PostMessage(ghApp, WM_CLOSE, 0, 0);
CheckMenuItem(ghMenu, ID_TICKER_STATIC_IMAGE, MF_CHECKED);
CheckMenuItem(ghMenu, ID_TICKER_DYNAMIC_TEXT, MF_UNCHECKED);
}
else // MARK_DYNAMIC_TEXT
{
if (!g_hFont)
g_hFont = SetTextFont(FALSE); // Don't display the Windows Font Select dialog
// If the initial blend fails, post a close message to exit the app
hr = BlendApplicationText(ghApp, g_szAppText);
if (FAILED(hr))
PostMessage(ghApp, WM_CLOSE, 0, 0);
CheckMenuItem(ghMenu, ID_TICKER_STATIC_IMAGE, MF_UNCHECKED);
CheckMenuItem(ghMenu, ID_TICKER_DYNAMIC_TEXT, MF_CHECKED);
}
// Complete the window setup
ShowWindow(ghApp, SW_SHOWNORMAL);
UpdateWindow(ghApp);
SetForegroundWindow(ghApp);
SetFocus(ghApp);
#ifdef REGISTER_FILTERGRAPH
if (FAILED(AddGraphToRot(pGB, &g_dwGraphRegister)))
{
Msg(TEXT("Failed to register filter graph with ROT!"));
g_dwGraphRegister = 0;
}
#endif
// Run the graph to play the media file
JIF(pMC->Run());
// Start animation by default
PostMessage(ghApp, WM_COMMAND, ID_SLIDE, 0);
}
return hr;
}
HRESULT BlendVideo(LPTSTR szFile1, LPTSTR szFile2)
{
USES_CONVERSION;
WCHAR wFile1[MAX_PATH], wFile2[MAX_PATH];
HRESULT hr;
// Check input string
if ((szFile1 == NULL) || (szFile2 == NULL))
return E_POINTER;
// Clear open dialog remnants before calling RenderFile()
UpdateWindow(ghApp);
// Convert filenames to wide character strings
wcsncpy(wFile1, T2W(szFile1), NUMELMS(wFile1)-1);
wcsncpy(wFile2, T2W(szFile2), NUMELMS(wFile2)-1);
wFile1[MAX_PATH-1] = wFile2[MAX_PATH-1] = 0;
// Get the interface for DirectShow's GraphBuilder
JIF(CoCreateInstance(CLSID_FilterGraph, NULL, CLSCTX_INPROC_SERVER,
IID_IGraphBuilder, (void **)&pGB));
if(SUCCEEDED(hr))
{
// Unlike the VMR7 in Windows XP, the VMR9 is not the default renderer
// (to preserve backward compatibility). In some multifile graphs,
// the filter graph manager could decide to load the default Video Renderer
// filter during RenderFile(), even though the VMR9 is already present
// in the graph. Since the default Video Renderer has a higher merit
// than the VMR9, it would be connected instead of the VMR9, leading to
// the video streams being displayed in multiple separate windows.
// This could be the case with AVI files created with legacy VfW codecs
// or when two Color Space convertors must be used (each requiring its
// own allocator).
// Therefore, we render the files programmatically instead of using
// the standard IGraphBuilder::RenderFile() method.
if (FAILED(ConfigureMultiFileVMR9(wFile1, wFile2)))
return hr;
// QueryInterface for DirectShow interfaces
JIF(pGB->QueryInterface(IID_IMediaControl, (void **)&pMC));
JIF(pGB->QueryInterface(IID_IMediaEventEx, (void **)&pME));
JIF(pGB->QueryInterface(IID_IMediaSeeking, (void **)&pMS));
// Is this an audio-only file (no video component)?
if (CheckVideoVisibility())
{
JIF(InitVideoWindow(1, 1));
}
else
{
// This sample requires video clips to be loaded
Msg(TEXT("This sample requires media with a video component. ")
TEXT("Please select another file."));
return E_FAIL;
}
// Have the graph signal event via window callbacks
JIF(pME->SetNotifyWindow((OAHWND)ghApp, WM_GRAPHNOTIFY, 0));
// Complete the window setup
ShowWindow(ghApp, SW_SHOWNORMAL);
UpdateWindow(ghApp);
SetForegroundWindow(ghApp);
SetFocus(ghApp);
#ifdef REGISTER_FILTERGRAPH
if (FAILED(AddGraphToRot(pGB, &g_dwGraphRegister)))
{
Msg(TEXT("Failed to register filter graph with ROT!"));
g_dwGraphRegister = 0;
}
#endif
// Run the graph to play the media files
MoveVideoWindow();
JIF(pMC->Run());
EnableMenus(TRUE);
}
return hr;
}
HRESULT PlayMovieInWindow(LPTSTR szFile)
{
HRESULT hr;
// Check input string
if (szFile == NULL)
return E_POINTER;
// Clear open dialog remnants before calling RenderFile()
UpdateWindow(ghApp);
// Get the interface for DirectShow's GraphBuilder
JIF(CoCreateInstance(CLSID_FilterGraph, NULL, CLSCTX_INPROC_SERVER,
IID_IGraphBuilder, (void **)&pGB));
if(SUCCEEDED(hr))
{
SmartPtr <IBaseFilter> pVmr;
// Create the Video Mixing Renderer and add it to the graph
JIF(InitializeWindowlessVMR(&pVmr));
// Render the file programmatically to use the VMR9 as renderer.
// Pass TRUE to create an audio renderer also.
if (FAILED(hr = RenderFileToVideoRenderer(pGB, szFile, TRUE)))
return hr;
// QueryInterface for DirectShow interfaces
JIF(pGB->QueryInterface(IID_IMediaControl, (void **)&pMC));
JIF(pGB->QueryInterface(IID_IMediaEventEx, (void **)&pME));
JIF(pGB->QueryInterface(IID_IMediaSeeking, (void **)&pMS));
JIF(pGB->QueryInterface(IID_IBasicAudio, (void **)&pBA));
// Is this an audio-only file (no video component)?
if (CheckVideoVisibility())
{
JIF(InitVideoWindow(1, 1));
}
else
{
// This sample requires a video clip to be loaded
Msg(TEXT("This sample requires media with a video component. ")
TEXT("Please select another file."));
return E_FAIL;
}
// Add the bitmap to the VMR's input
BlendApplicationImage(ghApp);
// Have the graph signal event via window callbacks for performance
JIF(pME->SetNotifyWindow((OAHWND)ghApp, WM_GRAPHNOTIFY, 0));
// Complete the window setup
ShowWindow(ghApp, SW_SHOWNORMAL);
UpdateWindow(ghApp);
SetForegroundWindow(ghApp);
SetFocus(ghApp);
UpdateMainTitle();
#ifdef REGISTER_FILTERGRAPH
hr = AddGraphToRot(pGB, &g_dwGraphRegister);
if (FAILED(hr))
{
Msg(TEXT("Failed to register filter graph with ROT! hr=0x%x"), hr);
g_dwGraphRegister = 0;
}
#endif
// Run the graph to play the media file
JIF(pMC->Run());
g_psCurrent=Running;
}
return hr;
}
