void CloseClip() { HRESULT hr; // Stop media playback if(pMC) hr = pMC->Stop(); // Clear global flags g_psCurrent = Stopped; g_bAudioOnly = TRUE; g_bFullscreen = FALSE; // Free DirectShow interfaces CloseInterfaces(); // Clear file name to allow selection of new file with open dialog g_szFileName[0] = L'\0'; // No current media state g_psCurrent = Init; // Reset the player window RECT rect; GetClientRect(ghApp, &rect); InvalidateRect(ghApp, &rect, TRUE); UpdateMainTitle(); InitPlayerWindow(); }
void OpenClip() { HRESULT hr; // If no filename specified by command line, show file open dialog if(g_szFileName[0] == L'\0') { TCHAR szFilename[MAX_PATH]; UpdateMainTitle(); // If no filename was specified on the command line, then our video // window has not been created or made visible. Make our main window // visible and bring to the front to allow file selection. InitPlayerWindow(); ShowWindow(ghApp, SW_SHOWNORMAL); SetForegroundWindow(ghApp); if (! GetClipFileName(szFilename)) { DWORD dwDlgErr = CommDlgExtendedError(); // Don't show output if user cancelled the selection (no dlg error) if (dwDlgErr) { Msg(TEXT("GetClipFileName Failed! Error=0x%x\r\n"), GetLastError()); } return; } // This sample does not support playback of ASX playlists. // Since this could be confusing to a user, display a warning // message if an ASX file was opened. if (_tcsstr((_tcslwr(szFilename)), TEXT(".asx"))) { Msg(TEXT("ASX Playlists are not supported by this application.\n\n") TEXT("Please select a valid media file.\0")); return; } lstrcpy(g_szFileName, szFilename); } // Reset status variables g_psCurrent = Stopped; g_lVolume = VOLUME_FULL; // Start playing the media file hr = PlayMovieInWindow(g_szFileName, FALSE); // If we couldn't play the clip, clean up if (FAILED(hr) && ( hr != NS_E_LICENSE_REQUIRED ) ) CloseClip(); }
void OpenClip() { HRESULT hr; // If no filename specified by command line, show file open dialog if(g_szFileName[0] == L'\0') { TCHAR szFilename[MAX_PATH]; UpdateMainTitle(); InitPlayerWindow(); SetForegroundWindow(ghApp); if (! GetClipFileName(szFilename)) { DWORD dwDlgErr = CommDlgExtendedError(); // Don't show output if user cancelled the selection (no dlg error) if (dwDlgErr) { Msg(TEXT("GetClipFileName Failed! Error=0x%x\r\n"), GetLastError()); } return; } // This sample does not support playback of ASX playlists. // Since this could be confusing to a user, display a warning // message if an ASX file was opened. if (_tcsnicmp(szFilename, TEXT(".asx"), 4) == 0) { Msg(TEXT("ASX Playlists are not supported by this application.\n\n") TEXT("Please select a valid media file.\0")); return; } StringCchCopy(g_szFileName, NUMELMS(g_szFileName), szFilename); } // Reset status variables g_psCurrent = Stopped; g_lVolume = VOLUME_FULL; EnableWatermarkMenu(TRUE); // Start playing the media file hr = PlayMovieInWindow(g_szFileName); // If we couldn't play the clip, clean up if (FAILED(hr)) CloseClip(); }
void OpenClip() { HRESULT hr; // If no filename specified by command line, show file open dialog if(g_szFileName[0] == L'\0') { TCHAR szFilename[MAX_PATH]; InitPlayerWindow(); SetForegroundWindow(ghApp); if (! GetClipFileName(szFilename)) { DWORD dwDlgErr = CommDlgExtendedError(); // Don't show output if user cancelled the selection (no dlg error) if (dwDlgErr) { Msg(TEXT("GetClipFileName Failed! Error=0x%x\r\n"), GetLastError()); } return; } // This sample does not support playback of ASX playlists. // Since this could be confusing to a user, display a warning // message if an ASX file was opened. if (_tcsstr((_tcslwr(szFilename)), TEXT(".asx"))) { Msg(TEXT("ASX Playlists are not supported by this application.\n\n") TEXT("Please select a valid media file.\0")); return; } lstrcpyn(g_szFileName, szFilename, NUMELMS(g_szFileName)); } EnableTickerMenu(TRUE); // Start playing the media file hr = PlayMovieInWindow(g_szFileName); // If we couldn't play the clip, clean up if (FAILED(hr)) CloseClip(); }
void CloseFiles() { HRESULT hr; // Stop any running timer StopTimer(); // Stop media playback if(pMC) hr = pMC->Stop(); // Free DirectShow interfaces CloseInterfaces(); EnableMenus(FALSE); // Reset the player window RECT rect; GetClientRect(ghApp, &rect); InvalidateRect(ghApp, &rect, TRUE); InitPlayerWindow(); }
void CloseClip() { HRESULT hr; // Stop media playback if(pMC) hr = pMC->Stop(); // Free DirectShow interfaces CloseInterfaces(); // Clear file name to allow selection of new file with open dialog g_szFileName[0] = L'\0'; // Reset the player window RECT rect; GetClientRect(ghApp, &rect); InvalidateRect(ghApp, &rect, TRUE); InitPlayerWindow(); EnableTickerMenu(FALSE); }
HRESULT PlayMovieInWindow(LPTSTR szFile, BOOL bReOpenAfterLicenseAcquired) { USES_CONVERSION; WCHAR wFile[MAX_PATH]; HRESULT hr; // Check input string if (!szFile) 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; // First pass of rendering the media file. If a DRM license must // be acquired before the file can be loaded, then the reopen flag // will be set. if( !bReOpenAfterLicenseAcquired ) { // Get the interface for DirectShow's GraphBuilder JIF(CoCreateInstance(CLSID_FilterGraph, NULL, CLSCTX_INPROC_SERVER, IID_IGraphBuilder, (void **)&pGB)); JIF(pGB->QueryInterface(IID_IMediaEventEx, (void **)&pME)); if(SUCCEEDED(hr)) { // Have the graph signal event via window callbacks // // Start this before we insert the reader filter, since we may need // to monitor DRM license acquistion messages on reader creation // JIF(pME->SetNotifyWindow((OAHWND)ghApp, WM_GRAPHNOTIFY, 0)); // Use special handling for Windows Media files if (IsWindowsMediaFile(szFile)) { // Load the improved ASF reader filter by CLSID hr = CreateFilter(CLSID_WMAsfReader, &g_pReader); if(FAILED(hr)) { Msg(TEXT("Failed to create WMAsfWriter filter! hr=0x%x\0"), hr); return hr; } // Add the ASF reader filter to the graph. For ASF/WMV/WMA content, // this filter is NOT the default and must be added explicitly. hr = pGB->AddFilter(g_pReader, L"ASF Reader"); if(FAILED(hr)) { Msg(TEXT("Failed to add ASF reader filter to graph! hr=0x%x\0"), hr); return hr; } // Create the key provider that will be used to unlock the WM SDK JIF(AddKeyProvider(pGB)); // Create the DRM license event g_hLicenseEvent = CreateEvent( NULL, FALSE, FALSE, NULL ); if( !g_hLicenseEvent ) { return E_OUTOFMEMORY; } // Set its source filename JIF(g_pReader->QueryInterface(IID_IFileSourceFilter, (void **) &g_pFileSource)); // Attempt to load this file hr = g_pFileSource->Load(wFile, NULL); // Handle Digital Rights Management (DRM) errors if(NS_E_LICENSE_REQUIRED == hr) { Msg(TEXT("This media file is protected by DRM and needs a license.\r\n\r\n") TEXT("Attempting to acquire a license...\0")); g_bWaitingForLicense = TRUE; return hr; } else if(NS_E_PROTECTED_CONTENT == hr) { Msg(TEXT("This media file is protected by DRM and needs a license.\r\n\r\n") TEXT("In order to play DRM-encoded content, you must acquire a DRM stub library\r\n") TEXT("from Microsoft and link it with this application. The default version of\r\n") TEXT("the WMStub.lib library does not support Digital Rights Management (DRM).")); return hr; } else if (FAILED(hr)) { Msg(TEXT("Failed to load file in source filter (g_pFileSource->Load())! hr=0x%x\0"), hr); return hr; } // Render the output pins of the ASF reader to build the // remainder of the graph automatically JIF(RenderOutputPins(pGB, g_pReader)); // Since the graph is built and the filters are added to the graph, // the WM ASF reader interface can be released. g_pReader->Release(); g_pReader = NULL; } // Not a Windows Media file, so just render the standard way else { // Have the graph builder construct the appropriate graph automatically JIF(pGB->RenderFile(wFile, NULL)); } } } else { hr = g_pFileSource->Load(wFile, NULL); if( SUCCEEDED( hr ) ) { Msg(TEXT("Successfully loaded file after DRM license acquisition!")); // Render the output pins of the ASF reader to build the // remainder of the graph automatically JIF(RenderOutputPins(pGB, g_pReader)); // Since the graph is built and the filters are added to the graph, // the WM ASF reader interface can be released. g_pReader->Release(); // not really necessary g_pReader = NULL; } else { Msg(TEXT("Failed to Load file after acquiring license! hr=0x%x\0"), hr); } } if( SUCCEEDED( hr ) ) { // QueryInterface for DirectShow interfaces JIF(pGB->QueryInterface(IID_IMediaControl, (void **)&pMC)); JIF(pGB->QueryInterface(IID_IMediaSeeking, (void **)&pMS)); // Query for video interfaces, which may not be relevant for audio files JIF(pGB->QueryInterface(IID_IVideoWindow, (void **)&pVW)); JIF(pGB->QueryInterface(IID_IBasicVideo, (void **)&pBV)); // Query for audio interfaces, which may not be relevant for video-only files JIF(pGB->QueryInterface(IID_IBasicAudio, (void **)&pBA)); // Is this an audio-only file (no video component)? CheckVisibility(); if (!g_bAudioOnly) { // Setup the video window JIF(pVW->put_Owner((OAHWND)ghApp)); JIF(pVW->put_WindowStyle(WS_CHILD | WS_CLIPSIBLINGS | WS_CLIPCHILDREN)); JIF(InitVideoWindow(1, 1)); GetFrameStepInterface(); } else { // Initialize the default player size and enable playback menu items JIF(InitPlayerWindow()); EnablePlaybackMenu(TRUE, AUDIO); } // Complete window initialization CheckSizeMenu(ID_FILE_SIZE_NORMAL); ShowWindow(ghApp, SW_SHOWNORMAL); UpdateWindow(ghApp); SetForegroundWindow(ghApp); g_bFullscreen = FALSE; 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; SetFocus(ghApp); } return hr; }
HRESULT PlayMovieInWindow(LPTSTR szFile) { USES_CONVERSION; WCHAR wFile[MAX_PATH]; HRESULT hr; // Clear open dialog remnants before calling RenderFile() UpdateWindow(ghApp); // Convert filename to wide character string wcscpy(wFile, T2W(szFile)); // Get the interface for DirectShow's GraphBuilder JIF(CoCreateInstance(CLSID_FilterGraph, NULL, CLSCTX_INPROC_SERVER, IID_IGraphBuilder, (void **)&pGB)); if(SUCCEEDED(hr)) { // 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)); JIF(pGB->QueryInterface(IID_IMediaPosition, (void **)&pMP)); // Query for video interfaces, which may not be relevant for audio files JIF(pGB->QueryInterface(IID_IVideoWindow, (void **)&pVW)); JIF(pGB->QueryInterface(IID_IBasicVideo, (void **)&pBV)); // Query for audio interfaces, which may not be relevant for video-only files JIF(pGB->QueryInterface(IID_IBasicAudio, (void **)&pBA)); // Is this an audio-only file (no video component)? CheckVisibility(); // Have the graph signal event via window callbacks for performance JIF(pME->SetNotifyWindow((OAHWND)ghApp, WM_GRAPHNOTIFY, 0)); if (!g_bAudioOnly) { JIF(pVW->put_Owner((OAHWND)ghApp)); JIF(pVW->put_WindowStyle(WS_CHILD | WS_CLIPSIBLINGS | WS_CLIPCHILDREN)); JIF(InitVideoWindow(1, 1)); GetFrameStepInterface(); } else { JIF(InitPlayerWindow()); } // Let's get ready to rumble! CheckSizeMenu(ID_FILE_SIZE_NORMAL); ShowWindow(ghApp, SW_SHOWNORMAL); UpdateWindow(ghApp); SetForegroundWindow(ghApp); SetFocus(ghApp); g_bFullscreen = FALSE; g_PlaybackRate = 1.0; 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; SetFocus(ghApp); } return hr; }