public Task <bool> LoadDataAsync(CancellationToken token = new CancellationToken())
{
return(Task.Factory.StartNew(() =>
{
try
{
if (string.IsNullOrEmpty(Filename))
{
_samples = null;
SampleCount = 0;
Max = 0;
Length = TimeSpan.Zero;
Loading = false;
IsEmpty = true;
return false;
}
IsEmpty = false;
Console.WriteLine($"- Reading {Filename}");
_samples = new SampleBuffer(Filename);
SampleRate = _samples.SampleRate;
Length = _samples.Length;
token.ThrowIfCancellationRequested();
_samples.Analyze();
// We don't care about ones where the samples are all equal
if (Math.Abs(_samples.Min - _samples.Max) < 0.0001)
{
Console.WriteLine($"- {Filename} is silent");
// So we skip steps here
_samples.Dispose();
_samples = null;
SampleCount = 0;
Max = 0;
Loading = false;
return false;
}
SampleCount = _samples.Count;
token.ThrowIfCancellationRequested();
Max = Math.Max(Math.Abs(_samples.Max), Math.Abs(_samples.Min));
Console.WriteLine($"- Peak sample amplitude for {Filename} is {Max}");
Loading = false;
return true;
}
catch (TaskCanceledException)
{
// Blank out if cancelled
Max = 0;
SampleRate = 0;
Length = TimeSpan.Zero;
_samples?.Dispose();
_samples = null;
Loading = false;
return false;
}
catch (Exception ex)
{
ErrorMessage = ex.ToString();
Max = 0;
SampleRate = 0;
Length = TimeSpan.Zero;
_samples?.Dispose();
_samples = null;
Loading = false;
return false;
}
finally
{
Changed?.Invoke(this, false);
}
}, token));
}
public Task <bool> LoadDataAsync(CancellationToken token = new CancellationToken())
{
return(Task.Factory.StartNew(() =>
{
try
{
ErrorMessage = "";
if (string.IsNullOrEmpty(Filename))
{
_samples = null;
SampleCount = 0;
Max = 0;
Length = TimeSpan.Zero;
Loading = false;
IsEmpty = true;
return false;
}
IsEmpty = false;
Console.WriteLine($"- Reading {Filename}");
_samples = new SampleBuffer(Filename, Side, HighPassFilter);
SampleRate = _samples.SampleRate;
Length = _samples.Length;
token.ThrowIfCancellationRequested();
_samples.Analyze();
SampleCount = _samples.Count;
token.ThrowIfCancellationRequested();
Max = Math.Max(Math.Abs(_samples.Max), Math.Abs(_samples.Min));
Console.WriteLine($"- Peak sample amplitude for {Filename} is {Max}");
if (string.IsNullOrEmpty(ExternalTriggerFilename))
{
// Point at the same SampleBuffer
_samplesForTrigger = _samples;
}
else
{
_samplesForTrigger = new SampleBuffer(ExternalTriggerFilename, Side, HighPassFilter);
}
Loading = false;
return true;
}
catch (TaskCanceledException)
{
// Blank out if cancelled
Max = 0;
SampleRate = 0;
Length = TimeSpan.Zero;
_samples?.Dispose();
_samples = null;
Loading = false;
return false;
}
catch (Exception ex)
{
ErrorMessage = ex.ToString();
Max = 0;
SampleRate = 0;
Length = TimeSpan.Zero;
_samples?.Dispose();
_samples = null;
Loading = false;
return false;
}
finally
{
Changed?.Invoke(this, false);
}
}, token));
}