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

See also

Media Engine Sample

Media Foundation Interfaces