IMFMediaEngine interface (mfmediaengine.h)
Enables an application to play audio or video files.
Inheritance
The IMFMediaEngine interface inherits from the IUnknown interface. IMFMediaEngine also has these types of members:
Methods
The IMFMediaEngine interface has these methods.
| IMFMediaEngine::CanPlayType Queries how likely it is that the Media Engine can play a specified type of media resource. |
| IMFMediaEngine::GetAutoPlay Queries whether the Media Engine automatically begins playback. |
| IMFMediaEngine::GetBuffered Queries how much resource data the media engine has buffered. |
| IMFMediaEngine::GetCurrentSource Gets the URL of the current media resource, or an empty string if no media resource is present. |
| IMFMediaEngine::GetCurrentTime Gets the current playback position. (IMFMediaEngine.GetCurrentTime) |
| IMFMediaEngine::GetDefaultPlaybackRate Gets the default playback rate. |
| IMFMediaEngine::GetDuration Gets the duration of the media resource. |
| IMFMediaEngine::GetError Gets the most recent error status. |
| IMFMediaEngine::GetLoop Queries whether the Media Engine will loop playback. |
| IMFMediaEngine::GetMuted Queries whether the audio is muted. (IMFMediaEngine.GetMuted) |
| IMFMediaEngine::GetNativeVideoSize Gets the size of the video frame, adjusted for aspect ratio. |
| IMFMediaEngine::GetNetworkState Gets the current network state of the media engine. |
| IMFMediaEngine::GetPlaybackRate Gets the current playback rate. (IMFMediaEngine.GetPlaybackRate) |
| IMFMediaEngine::GetPlayed Gets the time ranges that have been rendered. |
| IMFMediaEngine::GetPreload Gets the preload flag. |
| IMFMediaEngine::GetReadyState Gets the ready state, which indicates whether the current media resource can be rendered. |
| IMFMediaEngine::GetSeekable Gets the time ranges to which the Media Engine can currently seek. |
| IMFMediaEngine::GetStartTime Gets the initial playback position. |
| IMFMediaEngine::GetVideoAspectRatio Gets the picture aspect ratio of the video stream. |
| IMFMediaEngine::GetVolume Gets the audio volume level. |
| IMFMediaEngine::HasAudio Queries whether the current media resource contains an audio stream. |
| IMFMediaEngine::HasVideo Queries whether the current media resource contains a video stream. |
| IMFMediaEngine::IsEnded Queries whether playback has ended. |
| IMFMediaEngine::IsPaused Queries whether playback is currently paused. |
| IMFMediaEngine::IsSeeking Queries whether the Media Engine is currently seeking to a new playback position. |
| IMFMediaEngine::Load Loads the current media source. |
| IMFMediaEngine::OnVideoStreamTick Queries the Media Engine to find out whether a new video frame is ready. |
| IMFMediaEngine::Pause Pauses playback. (IMFMediaEngine.Pause) |
| IMFMediaEngine::Play Starts playback. (IMFMediaEngine.Play) |
| IMFMediaEngine::SetAutoPlay Specifies whether the Media Engine automatically begins playback. |
| IMFMediaEngine::SetCurrentTime Seeks to a new playback position. |
| IMFMediaEngine::SetDefaultPlaybackRate Sets the default playback rate. |
| IMFMediaEngine::SetErrorCode Sets the current error code. |
| IMFMediaEngine::SetLoop Specifies whether the Media Engine loops playback. |
| IMFMediaEngine::SetMuted Mutes or unmutes the audio. (IMFMediaEngine.SetMuted) |
| IMFMediaEngine::SetPlaybackRate Sets the current playback rate. |
| IMFMediaEngine::SetPreload Sets the preload flag. |
| IMFMediaEngine::SetSource Sets the URL of a media resource. |
| IMFMediaEngine::SetSourceElements Sets a list of media sources. |
| IMFMediaEngine::SetVolume Sets the audio volume level. |
| IMFMediaEngine::Shutdown Shuts down the Media Engine and releases the resources it is using. |
| IMFMediaEngine::TransferVideoFrame Copies the current video frame to a DXGI surface or WIC bitmap. |
Remarks
The Media Engine implements this interface. To create an instance of the Media Engine, call IMFMediaEngineClassFactory::CreateInstance.
This interface is extended with IMFMediaEngineEx.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 8 [desktop apps | UWP apps] |
| Minimum supported server | Windows Server 2012 [desktop apps | UWP apps] |
| Target Platform | Windows |
| Header | mfmediaengine.h |