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    Class RemoteAudioTrack

    Audio track receiving audio frames from the remote peer.

    Inheritance
    Object
    MediaTrack
    RemoteAudioTrack
    Implements
    IAudioSource
    Inherited Members
    MediaTrack.Transceiver
    MediaTrack.PeerConnection
    MediaTrack.Name
    Namespace: Microsoft.MixedReality.WebRTC
    Assembly: Microsoft.MixedReality.WebRTC.dll
    Syntax
    public class RemoteAudioTrack : MediaTrack, IAudioSource
    Remarks

    Instances of this class are created by PeerConnection when a negotiation adds tracks sent by the remote peer.

    New tracks are automatically played on the system audio device after AudioTrackAdded is fired on track creation. To avoid the track being played, call OutputToDevice(Boolean) in a AudioTrackAdded handler (or later).

    Properties

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    Enabled

    Enabled status of the track. If enabled, receives audio frames from the remote peer as expected. If disabled, does not receive anything (silence).

    Declaration
    public bool Enabled { get; }
    Property Value
    Type Description
    Boolean
    Remarks

    Reading the value of this property after the track has been disposed is valid, and returns false. The remote audio track enabled status is controlled by the remote peer only.

    Methods

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    CreateReadBuffer()

    Starts buffering the audio frames from in an AudioTrackReadBuffer.

    Declaration
    public AudioTrackReadBuffer CreateReadBuffer()
    Returns
    Type Description
    AudioTrackReadBuffer
    Remarks

    WebRTC audio tracks produce an audio frame every 10 ms. If you want the audio frames to be buffered (and optionally resampled) automatically, and you want the application to control when new audio data is read, create an AudioTrackReadBuffer using CreateReadBuffer(). If you want to process the audio frames as soon as they are received, without conversions, subscribe to AudioFrameReady instead.

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    IsOutputToDevice()

    Returns whether the track is output directly to the system audio device.

    Declaration
    public bool IsOutputToDevice()
    Returns
    Type Description
    Boolean
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    OutputToDevice(Boolean)

    Output the audio track to the WebRTC audio device.

    Declaration
    public void OutputToDevice(bool output)
    Parameters
    Type Name Description
    Boolean output
    Remarks

    The default behavior is for every remote audio frame to be passed to remote audio frame callbacks, as well as output automatically to the audio device used by WebRTC. If |false| is passed to this function, remote audio frames will still be received and passed to callbacks, but won't be output to the audio device.

    NOTE: Changing the default behavior is not supported on UWP.

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    ToString()

    Declaration
    public override string ToString()
    Returns
    Type Description
    String
    Overrides
    MediaTrack.ToString()

    Events

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    AudioFrameReady

    Event that occurs when a new audio frame is available from the source, either because the source produced it locally (AudioTrackSource, LocalAudioTrack) or because it received it from the remote peer (RemoteAudioTrack).

    Declaration
    public event AudioFrameDelegate AudioFrameReady
    Event Type
    Type Description
    AudioFrameDelegate
    Remarks

    WebRTC audio tracks produce an audio frame every 10 ms. If you want to process the audio frames as soon as they are received, without conversions, subscribe to AudioFrameReady. If you want the audio frames to be buffered (and optionally resampled) automatically, and you want the application to control when new audio data is read, create an AudioTrackReadBuffer using CreateReadBuffer().

    Implements

    IAudioSource
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