/// <summary>
/// Initialises a new instance of MeteringSampleProvider
/// </summary>
/// <param name="source">source sampler provider</param>
/// <param name="samplesPerNotification">Number of samples between notifications</param>
public MeteringSampleProvider(ISampleProvider source, int samplesPerNotification)
{
this.source = source;
this.channels = source.WaveFormat.Channels;
this.maxSamples = new float[channels];
this.SamplesPerNotification = samplesPerNotification;
this.args = new StreamVolumeEventArgs() { MaxSampleValues = this.maxSamples }; // create objects up front giving GC little to do
}
/// <summary>
/// Initialises a new instance of MeteringSampleProvider
/// </summary>
/// <param name="source">source sampler provider</param>
/// <param name="samplesPerNotification">Number of samples between notifications</param>
public MeteringSampleProvider(ISampleProvider source, int samplesPerNotification)
{
this.source = source;
this.channels = source.WaveFormat.Channels;
this.maxSamples = new float[channels];
this.SamplesPerNotification = samplesPerNotification;
this.args = new StreamVolumeEventArgs()
{
MaxSampleValues = this.maxSamples
}; // create objects up front giving GC little to do
}
void SampleChannelPreVolumeMeter(object sender, StreamVolumeEventArgs e)
{
LevelChanged?.Invoke(this, new LevelChangedEventArgs(e.MaxSampleValues));
}
void MeteringProviderStreamVolume(object sender, StreamVolumeEventArgs e)
{
if (LevelChanged != null)
LevelChanged(this, new LevelChangedEventArgs(e.MaxSampleValues));
}
void SampleChannelPreVolumeMeter(object sender, StreamVolumeEventArgs e)
{
if (LevelChanged != null)
LevelChanged(this, new LevelChangedEventArgs(e.MaxSampleValues));
}
void OnPreVolumeMeter(object sender, StreamVolumeEventArgs e)
{
// we know it is stereo
waveformPainter1.AddMax(e.MaxSampleValues[0]);
waveformPainter2.AddMax(e.MaxSampleValues[1]);
}
void OnPostVolumeMeter(object sender, StreamVolumeEventArgs e)
{
// we know it is stereo
volumeMeter1.Amplitude = e.MaxSampleValues[0];
volumeMeter2.Amplitude = e.MaxSampleValues[1];
}
private void OnPreVolumeMeter(object sender, StreamVolumeEventArgs e) {
// we know it is stereo
//waveformPainter1.AddMax(e.MaxSampleValues[0]);
//waveformPainter2.AddMax(e.MaxSampleValues[1]);
float[] max = e.MaxSampleValues;
}
void _meteringProvider_StreamVolume(object sender, StreamVolumeEventArgs e)
{
UpdateLevel(e.MaxSampleValues[0]);
}
void OnPreVolumeMeter(object sender, NAudio.Wave.SampleProviders.StreamVolumeEventArgs e)
{
// we know it is stereo
//w aveformPainter1.AddMax(e.MaxSampleValues[0]);
//waveformPainter2.AddMax(e.MaxSampleValues[1]);
}
void OnPostVolumeMeter(object sender, StreamVolumeEventArgs e)
{
TimeSpan currentTime = (waveOut.PlaybackState == PlaybackState.Stopped) ? TimeSpan.Zero : fileWaveStream.CurrentTime;
string time = String.Format("{0:00}:{1:00}:{2:00}", (int)currentTime.TotalMinutes, currentTime.Seconds, currentTime.Milliseconds);
// we know it is stereo
volumeMeter1.Amplitude = e.MaxSampleValues[0];
MainLogClass.Log = string.Format("[0] v {0} t {1} \n", volumeMeter1.Amplitude, time);
volumeMeter2.Amplitude = e.MaxSampleValues[1];
MainLogClass.Log = string.Format("[0] v {0} t {1} \n", volumeMeter1.Amplitude, time);
}
void SampleChannelPreVolumeMeter(object sender, StreamVolumeEventArgs e)
{
var lc = LevelChanged;
if (lc != null)
{
lc.Invoke(this, new LevelChangedEventArgs(e.MaxSampleValues));
}
}
void onPreVolumeMeter(object sender, StreamVolumeEventArgs e)
{
waveformPainterL.AddMax(e.MaxSampleValues[0]);
waveformPainterR.AddMax(e.MaxSampleValues[1]);
}
void onPostVolumeMeter(object sender, StreamVolumeEventArgs e)
{
volumeMeterL.Amplitude = e.MaxSampleValues[0];
volumeMeterR.Amplitude = e.MaxSampleValues[1];
}
/// <summary>
/// Event handler to update volume meter
/// </summary>
/// <param name="sender">Sending object</param>
/// <param name="e">Event arguments</param>
void sampleProvider_StreamVolume(object sender, StreamVolumeEventArgs e)
{
float peak;
// If stereo, set peak to value of the highest channel
if (e.MaxSampleValues.Count() > 1)
{
peak = (e.MaxSampleValues[0] > e.MaxSampleValues[1]) ? e.MaxSampleValues[0] : e.MaxSampleValues[1];
}
// Else if mono use only channel peak value
else
{
peak = e.MaxSampleValues[0];
}
// Convert signal level to decibels and update level with result
meterLevel = (float)(20 * Math.Log10(e.MaxSampleValues[0]));
// Fire event indicating the level has changed
if (MeterLevelChanged != null)
{
MeterLevelChanged(this, new EventArgs());
}
}
