{"id":1082,"date":"2009-10-09T19:04:27","date_gmt":"2009-10-09T17:04:27","guid":{"rendered":"https:\/\/alax.info\/blog\/?p=1082"},"modified":"2009-10-09T19:04:27","modified_gmt":"2009-10-09T17:04:27","slug":"how-to-use-windowless-video-mixing-renderer-filter-to-show-video-fullscreen","status":"publish","type":"post","link":"https:\/\/alax.info\/blog\/1082","title":{"rendered":"How to use windowless Video Mixing Renderer Filter to show video fullscreen"},"content":{"rendered":"

The question is being asked from time to time. Everyone knows what is full screen video. Video renderers implement full screen capability since long ago through their IVideoWindow::put_FullScreenMode<\/a> property, and even Filter Graph Manager<\/a> exposes its own IVideoWindow<\/a> interface to forward calls to filter’s implementation of IVideoWindow<\/a> interface.<\/p>\n

However, for Video Mixing Renderers, version 7<\/a> and 9<\/a>, the preferred and recommended mode is windowless, where no IVideoWindow interface is available.<\/p>\n

Note<\/strong> The IVMRWindowlessControl<\/strong><\/a> or IVMRWindowlessControl9<\/strong><\/a> interface is now preferred over IVideoWindow<\/strong>. For more information, see Using Windowless Mode<\/a>.<\/p><\/blockquote>\n

So in order to implement full screen mode it takes the application to attach Video Mixing Renderer filter to a private frameless window, to its entire client area and expand the window to entire monitor area.<\/p>\n

The sample project FullScreenWindowlessVmrSample01<\/a> is illustrating this technique.<\/p>\n

\"FullScreenWindowlessVmrSample01<\/p>\n

Main application dialog owns a special window to host renderer, implemented by CRendererDialog class.<\/p>\n

\r\n
class<\/span> CRendererDialog :<\/span>\r\n    public<\/span> CDialogImpl<<\/span>CRendererDialog><\/span>\r\n{<\/span>\r\npublic<\/span>:<\/span>\r\n\r\n    enum<\/span> {<\/span> IDD =<\/span> IDD_RENDERER }<\/span>;<\/span>\r\n\r\nBEGIN_MSG_MAP_EX(<\/span>CRendererDialog)<\/span>\r\n    MSG_WM_INITDIALOG(<\/span>OnInitDialog)<\/span>\r\n    MSG_WM_DESTROY(<\/span>OnDestroy)<\/span>\r\n    MSG_WM_ERASEBKGND(<\/span>OnEraseBkgnd<\/span>)<\/span>\r\n    MSG_WM_PAINT(<\/span>OnPaint)<\/span>\r\n    MSG_WM_DISPLAYCHANGE(<\/span>OnDisplayChange)<\/span>\r\n    MSG_WM_KEYDOWN(<\/span>OnKeyDown)<\/span>\r\n    COMMAND_ID_HANDLER_EX(<\/span>IDCANCEL,<\/span> OnCancel)<\/span>\r\nEND_MSG_MAP(<\/span>)<\/span>\r\n\r\nprivate<\/span>:<\/span>\r\n    CMainDialog&<\/span> m_Owner;<\/span>\r\n\/\/...<\/span><\/pre>\n
The dialog template does not have a caption, it has no frame and has its window rectangle equal to client area. As a result, spanning the Video Mixing Renderer to the entire client area and proper positioning of the dialog window is showing video on the entire monitor.<\/p>\n
\r\n
ATLVERIFY(<\/span>m_RendererDialog.<\/span>Create(<\/span>m_hWnd)<\/span>)<\/span>;<\/span>\r\nATLVERIFY(<\/span>m_RendererDialog.<\/span>MoveWindow<\/span>(<\/span>MonitorData.<\/span>m_Position)<\/span>)<\/span>;<\/span>\r\nm_RendererDialog.<\/span>ShowWindow<\/span>(<\/span>SW_SHOWNORMAL)<\/span>;<\/span>\r\n\/\/ ...<\/span>\r\nATLENSURE_SUCCEEDED(<\/span>pVmrWindowlessControl-<\/span>><\/span>SetVideoClippingWindow(<\/span>m_RendererDialog)<\/span>)<\/span>;<\/span>\r\nATLENSURE_SUCCEEDED(<\/span>pVmrWindowlessControl-<\/span>><\/span>SetVideoPosition(<\/span>NULL<\/span>,<\/span> m_RendererDialog.<\/span>GetVideoPosition(<\/span>)<\/span>)<\/span>)<\/span>;<\/span><\/pre>\n
Visual C++ .NET 2008 source code is available from SVN<\/a>, release binary included<\/a>. The project is using ATL and WTL<\/a> libraries.<\/p>\n","protected":false},"excerpt":{"rendered":"
The question is being asked from time to time. Everyone knows what is full screen video. Video renderers implement full screen capability since long ago through their IVideoWindow::put_FullScreenMode property, and even Filter Graph Manager exposes its own IVideoWindow interface to forward calls to filter’s implementation of IVideoWindow interface. However, for Video Mixing Renderers, version 7… <\/p>\n
Read the full article<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11,13,12,10,20],"tags":[78,275,276,277,121,137,488,486,111,149],"class_list":["post-1082","post","type-post","status-publish","format-standard","hentry","category-atl","category-source","category-technology","category-video","category-wtl","tag-directshow","tag-fullscreen","tag-ivideowidow","tag-ivmrwindowlesscontrol","tag-renderer","tag-sample","tag-source","tag-video","tag-vmr","tag-windowless"],"_links":{"self":[{"href":"https:\/\/alax.info\/blog\/wp-json\/wp\/v2\/posts\/1082","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/alax.info\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/alax.info\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/alax.info\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/alax.info\/blog\/wp-json\/wp\/v2\/comments?post=1082"}],"version-history":[{"count":0,"href":"https:\/\/alax.info\/blog\/wp-json\/wp\/v2\/posts\/1082\/revisions"}],"wp:attachment":[{"href":"https:\/\/alax.info\/blog\/wp-json\/wp\/v2\/media?parent=1082"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/alax.info\/blog\/wp-json\/wp\/v2\/categories?post=1082"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/alax.info\/blog\/wp-json\/wp\/v2\/tags?post=1082"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}