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PONAudio MeteringSampleProvider not firing events?
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  1. PONAudio MeteringSampleProvider not firing events?
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    copied!<p>From all the samples I've seen using NAudio's MeteringSampleProvider to update a VolumeMeter control, I think I've got the right code, but it seems that the event for the MeteringSampleProvider as well as the SampleChannel never fire. I'm writing to a wav file at the same time and when I play it back, the recording has worked fine. Any ideas?</p> <pre><code>IWaveIn wavStream; WaveFileWriter wavWriter; BufferedWaveProvider bufferedWaveProvider; SampleChannel sampleChannel; MeteringSampleProvider meteringSampleProvider; wavStream = new WaveIn(); wavWriter = new WaveFileWriter(CurrentRecording.Filename, wavStream.WaveFormat); wavStream.DataAvailable += new EventHandler&lt;WaveInEventArgs&gt;((s2, e2) =&gt; { //Add sample to the buffered provider bufferedWaveProvider.AddSamples(e2.Buffer, 0, e2.BytesRecorded); //************************************************************ //EDIT: This is how I solved the issue!!! var tmpBuffer = new float[e2.BytesRecorded]; if (meteringSampleProvider != null) meteringSampleProvider.Read(tmpBuffer, 0, e2.BytesRecorded); //END EDIT //************************************************************ //Write to the wave file wavWriter.Write(e2.Buffer, 0, e2.BytesRecorded); }); //Create our Buffered provider bufferedWaveProvider = new BufferedWaveProvider(wavStream.WaveFormat); bufferedWaveProvider.DiscardOnBufferOverflow = true; //Create the sample channel sampleChannel = new SampleChannel(bufferedWaveProvider); sampleChannel.PreVolumeMeter += new EventHandler&lt;StreamVolumeEventArgs&gt;((s2, e2) =&gt; { Console.WriteLine("PreVolumeMeter"); }); //Create the metering sample provider meteringSampleProvider = new MeteringSampleProvider(sampleChannel); meteringSampleProvider.StreamVolume += new EventHandler&lt;StreamVolumeEventArgs&gt;((s2, e2) =&gt; { Console.WriteLine("PostVolumeMeter"); }); //Start Recording wavStream.StartRecording(); </code></pre>
 

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