void AudioStream_OnBroadcast(object sender, byte [] bytes)
{
var level = AudioFunctions.CalculateLevel(bytes);
if (level > SilenceThreshold) //did we find a signal?
{
audioDetected = true;
silenceTime = null;
}
else //no audio detected
{
//see if we've detected 'near' silence for more than <audioTimeout>
if (StopRecordingOnSilence && silenceTime.HasValue)
{
if (DateTime.Now.Subtract(silenceTime.Value) > AudioSilenceTimeout)
{
Timeout("AudioRecorderService.AudioStream_OnBroadcast (): AudioSilenceTimeout exceeded, stopping recording");
return;
}
}
else
{
silenceTime = DateTime.Now;
}
}
if (StopRecordingAfterTimeout && DateTime.Now - startTime > TotalAudioTimeout)
{
Timeout("AudioRecorderService.AudioStream_OnBroadcast(): TotalAudioTimeout exceeded, stopping recording");
}
}
void AudioStream_OnBroadcast(object sender, byte [] bytes)
{
var level = AudioFunctions.CalculateLevel(bytes);
AudioLevelUpdated?.Invoke(this, level);
if (level < NearZero && !audioDetected) // discard any initial 0s so we don't jump the gun on timing out
{
Debug.WriteLine("level == {0} && !audioDetected", level);
return;
}
if (level > SilenceThreshold) // did we find a signal?
{
audioDetected = true;
silenceTime = null;
Debug.WriteLine("AudioStream_OnBroadcast :: {0} :: level > SilenceThreshold :: bytes: {1}; level: {2}", DateTime.Now, bytes.Length, level);
}
else // no audio detected
{
// see if we've detected 'near' silence for more than <audioTimeout>
if (StopRecordingOnSilence && silenceTime.HasValue)
{
var currentTime = DateTime.Now;
if (currentTime.Subtract(silenceTime.Value).TotalMilliseconds > AudioSilenceTimeout.TotalMilliseconds)
{
Timeout($"AudioStream_OnBroadcast :: {currentTime} :: AudioSilenceTimeout exceeded, stopping recording :: Near-silence detected at: {silenceTime}");
return;
}
}
else
{
silenceTime = DateTime.Now;
Debug.WriteLine("AudioStream_OnBroadcast :: {0} :: Near-silence detected :: bytes: {1}; level: {2}", silenceTime, bytes.Length, level);
}
}
if (StopRecordingAfterTimeout && DateTime.Now - startTime > TotalAudioTimeout)
{
Timeout("AudioStream_OnBroadcast(): TotalAudioTimeout exceeded, stopping recording");
}
}
async void AudioStream_OnBroadcast(object sender, byte [] bytes)
{
var level = AudioFunctions.CalculateLevel(bytes);//, bigEndian: true);//, bigEndian: true, signed: false);
//var level = Decode(bytes).Select(Math.Abs).Average(x => x);
//double level = Math.Sqrt(sum / (bytes.Length / 2));
System.Diagnostics.Debug.WriteLine("AudioStream_OnBroadcast :: calculateLevel == {0}", level);
if (level > SilenceThreshold) //did we find a signal?
{
audioDetected = true;
silenceTime = null;
}
else //no audio detected
{
//see if we've detected 'near' silence for more than <audioTimeout>
if (StopRecordingOnSilence && silenceTime.HasValue)
{
if (DateTime.Now.Subtract(silenceTime.Value) > AudioSilenceTimeout)
{
System.Diagnostics.Debug.WriteLine("AudioRecorderService.AudioStream_OnBroadcast(): AudioSilenceTimeout exceeded, stopping recording");
await StopRecording();
return;
}
}
else
{
silenceTime = DateTime.Now;
}
}
if (StopRecordingAfterTimeout && DateTime.Now - startTime > TotalAudioTimeout)
{
System.Diagnostics.Debug.WriteLine("AudioRecorderService.AudioStream_OnBroadcast(): TotalAudioTimeout exceeded, stopping recording");
await StopRecording();
}
}