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POHow to play non buffered WAV with MediaStreamSource implementation in Silverlight 4?
 

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  1. POHow to play non buffered WAV with MediaStreamSource implementation in Silverlight 4?
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    <p><strong>Background</strong></p> <p>I'm trying to stream a wave file in Silverlight 4 using MediaStreamSource implementation found <a href="http://blogs.msdn.com/b/gillesk/archive/2009/03/23/playing-back-wave-files-in-silverlight.aspx" rel="nofollow noreferrer">here</a>. The problem is I want to play the file while it's still buffering, or at least give user some visual feedback while it's buffering. For now my code looks like that:</p> <pre><code>private void button1_Click(object sender, RoutedEventArgs e) { HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(new Uri(App.Current.Host.Source, "../test.wav")); //request.ContentType = "audio/x-wav"; request.AllowReadStreamBuffering = false; request.BeginGetResponse(new AsyncCallback(RequestCallback), request); } private void RequestCallback(IAsyncResult ar) { this.Dispatcher.BeginInvoke(delegate() { HttpWebRequest request = (HttpWebRequest)ar.AsyncState; HttpWebResponse response = (HttpWebResponse)request.EndGetResponse(ar); WaveMediaStreamSource wavMss = new WaveMediaStreamSource(response.GetResponseStream()); try { me.SetSource(wavMss); } catch (InvalidOperationException) { // This file is not valid } me.Play(); }); } </code></pre> <p>The problem is that after setting <code>request.AllowReadStreamBuffering = false</code> the stream does not support seeking and the above mentioned implementation throws an exception (keep in mind I've put some of the position setting logic into <code>if (stream.CanSeek)</code> block):</p> <blockquote> <p>Read is not supported on the main thread when buffering is disabled</p> </blockquote> <p><strong>Question</strong></p> <p>Is there a way to play WAV stream without buffering it in advance in Silverlight 4?</p>
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