IMFVideoDisplayControl Interface
Controls how the Enhanced Video Renderer (EVR) displays video.
The EVR presenter implements this interface. To get a pointer to the interface, call IMFGetService::GetService. The service identifier is GUID MR_VIDEO_RENDER_SERVICE. Call GetService on any of the following objects:
- The Media Session, if the topology contains an instance of the EVR.
- The EVR media sink.
- The DirectShow EVR filter.
- The EVR presenter.
If you implement a custom presenter for the EVR, the presenter can optionally expose this interface as a service.
Mitglieder
IMFVideoDisplayControlSchnittstelle erbt von der IUnknown-Schnittstelle. IMFVideoDisplayControl umfasst auch die folgenden Typen von Mitgliedern:
- Methoden
Methoden
IMFVideoDisplayControlSchnittstelle umfasst die folgenden Methoden.
| Methode | Beschreibung |
|---|---|
| GetAspectRatioMode | Queries how the EVR handles the aspect ratio of the source video. |
| GetBorderColor | Retrieves the border color for the video. |
| GetCurrentImage | Retrieves a copy of the current image being displayed by the video renderer. |
| GetFullscreen | Queries whether the EVR is currently in full-screen mode. |
| GetIdealVideoSize | Gets the range of sizes that the EVR can display without significantly degrading performance or image quality. |
| GetNativeVideoSize | Gets the size and aspect ratio of the video, prior to any stretching by the video renderer. |
| GetRenderingPrefs | Gets various video rendering settings. |
| GetVideoPosition | Gets the source and destination rectangles for the video. |
| GetVideoWindow | Gets the clipping window for the video. |
| RepaintVideo | Gets the current video frame. |
| SetAspectRatioMode | Specifies how the EVR handles the aspect ratio of the source video. |
| SetBorderColor | Sets the border color for the video. |
| SetFullscreen | Sets or unsets full-screen rendering mode. |
| SetRenderingPrefs | Sets various preferences related to video rendering. |
| SetVideoPosition | Sets the source and destination rectangles for the video. |
| SetVideoWindow | Sets the clipping window for the video. |
Anforderungen
Mindestens unterstützter Client |
Windows Vista |
Mindestens unterstützter Server |
Windows Server 2008 |
Header |
Evr.h |
Bibliothek |
Strmiids.lib |