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POPlay audio from a stream using C#
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  1. POPlay audio from a stream using C#
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    copied!<p>Is there a way in C# to play audio (for example, MP3) direcly from a <a href="http://msdn.microsoft.com/en-us/library/system.io.stream%28v=vs.110%29.aspx" rel="noreferrer">System.IO.Stream</a> that for instance was returend from a WebRequest without saving the data temporarily to the disk?</p> <hr> <h3>Solution with <a href="http://www.codeplex.com/naudio" rel="noreferrer">NAudio</a></h3> <p>With the help of <a href="http://www.codeplex.com/naudio" rel="noreferrer">NAudio</a> 1.3 it is possible to:</p> <ol> <li>Load an MP3 file from a URL into a MemoryStream</li> <li>Convert MP3 data into wave data after it was completely loaded</li> <li>Playback the wave data using <a href="http://www.codeplex.com/naudio" rel="noreferrer">NAudio</a>'s WaveOut class</li> </ol> <p>It would have been nice to be able to even play a half loaded MP3 file, but this seems to be impossible due to the <a href="http://www.codeplex.com/naudio" rel="noreferrer">NAudio</a> library design.</p> <p>And this is the function that will do the work:</p> <pre><code> public static void PlayMp3FromUrl(string url) { using (Stream ms = new MemoryStream()) { using (Stream stream = WebRequest.Create(url) .GetResponse().GetResponseStream()) { byte[] buffer = new byte[32768]; int read; while ((read = stream.Read(buffer, 0, buffer.Length)) &gt; 0) { ms.Write(buffer, 0, read); } } ms.Position = 0; using (WaveStream blockAlignedStream = new BlockAlignReductionStream( WaveFormatConversionStream.CreatePcmStream( new Mp3FileReader(ms)))) { using (WaveOut waveOut = new WaveOut(WaveCallbackInfo.FunctionCallback())) { waveOut.Init(blockAlignedStream); waveOut.Play(); while (waveOut.PlaybackState == PlaybackState.Playing ) { System.Threading.Thread.Sleep(100); } } } } } </code></pre>
 

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