Declaration

type TIEMediaFoundationAudioRenderer = class(TInterfacedObject, IIEMediaFoundationReaderNotifyReceiver);

Description

A wrapper for the Media Foundation audio renderer.

Applications can add a TIEMediaFoundationAudioRenderer as a notification receiver (see PushNotifyReceiver method) in order to automatically render the audio stream.

Note:
◼ Using TIEMediaFoundationAudioRenderer with TIEMediaFoundationSourceReader may produce audio out of synchronization.
◼ The Audio renderer supports only PCM or Float media types, so applications should set the appropriate media type (see example).

Example

// Add the audio renderer
audioStreamindex := ImageEnView1.IO.MediaFoundationSourceReader.IndexOfFirstStream(mmf_AUDIO_STREAM);
ImageEnView1.IO.MediaFoundationSourceReader.SetSelectedStreams(audioStreamIndex, true);
ImageEnView1.IO.MediaFoundationSourceReader.SetMediaTypeAudio(audioStreamIndex, 'PCM');
ImageEnView1.IO.MediaFoundationSourceReader.PushNotifyReceiver( TIEMediaFoundationAudioRenderer.Create(audioStreamIndex) );
ImageEnView1.IO.MediaFoundationSourceReader.StartCapture();

// Remove the audio renderer
ImageEnView1.IO.MediaFoundationSourceReader.StopCapture();
ImageEnView1.IO.MediaFoundationSourceReader.PopNotifyReceiver();

See Also

◼ PopNotifyReceiver
◼ PushNotifyReceiver

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