Question

There are many examples on how to use the Background Audio Agent but very few show how to use the Background Audio Streaming Agent and the ones that I found don’t show streaming mp3 but instead create a pretend stream.

When I create a new Windows Phone Audio Streaming Agent project, it gives me:

public class AudioTrackStreamer : AudioStreamingAgent
{
    /// <summary>
    /// Called when a new track requires audio decoding
    /// (typically because it is about to start playing)
    /// </summary>
    /// <param name="track">
    /// The track that needs audio streaming
    /// </param>
    /// <param name="streamer">
    /// The AudioStreamer object to which a MediaStreamSource should be
    /// attached to commence playback
    /// </param>
    /// <remarks>
    /// To invoke this method for a track set the Source parameter of the AudioTrack to null
    /// before setting  into the Track property of the BackgroundAudioPlayer instance
    /// property set to true;
    /// otherwise it is assumed that the system will perform all streaming
    /// and decoding
    /// </remarks>
    protected override void OnBeginStreaming(AudioTrack track, AudioStreamer streamer)
    {
        //TODO: Set the SetSource property of streamer to a MSS source

        NotifyComplete();
    }

    /// <summary>
    /// Called when the agent request is getting cancelled
    /// The call to base.OnCancel() is necessary to release the background streaming resources
    /// </summary>
    protected override void OnCancel()
    {
        base.OnCancel();
    }
}

How do I give it a MP3 URL like http://relay.radioreference.com:80/346246215 and have it stream it in the background? Also do I put BackgroundAudioPlayer.Instance.Play(); to play it and that’s it?

Answer 1

yes, that is enough No need of streamer, if you set the URL to the background agent and call the function BackgroundAudioPlayer.Instance.Play(); the background agent automatically streams the media