/// <summary>
///
/// </summary>
/// <param name="message"></param>
private void UpdateScreenCapture(ScreenCaptureMessage message)
{
if (ScreenCaptureImage.Source != null)
{
((BitmapImage)ScreenCaptureImage.Source).StreamSource.Dispose();
}
ScreenCaptureImage.Source = ImageHelpers.BitmapToImageSource(message.RawImage);
}
/// <summary>
///
/// </summary>
/// <param name="message"></param>
private void UpdateScreenCapture(WebcamCaptureMessage message)
{
if (WebcamImage.Source != null)
{
((BitmapImage)WebcamImage.Source).StreamSource.Dispose();
}
WebcamImage.Source = ImageHelpers.BitmapToImageSource(message.RawImage);
TxtBoxRate.Text = message.FrameRate.ToString();
}
private void Timer_Tick(object sender, EventArgs e)
{
double[] newAudio = listener.GetNewAudio();
spec.Add(newAudio, process: false);
double multiplier = Brightness / 20.0;
if (spec.FftsToProcess > 0)
{
Stopwatch sw = Stopwatch.StartNew();
spec.Process();
//if (SpectrogamImageSource != null)
spec.SetFixedWidth(1024);// (int)SpectrogamImageSource.Width);
Bitmap bmpSpec = new Bitmap(spec.Width, spec.Height, System.Drawing.Imaging.PixelFormat.Format32bppPArgb);
using (var bmpSpecIndexed = spec.GetBitmap(multiplier, Decibels, Roll))
using (var gfx = Graphics.FromImage(bmpSpec))
using (var pen = new System.Drawing.Pen(System.Drawing.Color.White))
{
gfx.DrawImage(bmpSpecIndexed, 0, 0);
if (Roll)
{
gfx.DrawLine(pen, spec.NextColumnIndex, 0, spec.NextColumnIndex, SpectrogramHeight);
}
}
sw.Stop();
//SpectrogamImageSource.Dispose();
SpectrogamImageSource = ImageHelpers.BitmapToImageSource(bmpSpec);
VerticalScaleImageSource = ImageHelpers.BitmapToImageSource(spec.GetVerticalScale(75));
RenderTime = $"Render time: {sw.ElapsedMilliseconds:D2} ms";
Peak = $"Peak (Hz): {spec.GetPeak().freqHz:N0}";
}
TotalTime = $"Time: {listener.TotalTimeSec:N3} sec";
FftsProcessed = $"FFTs processed: {spec.FftsProcessed:N0}";
//Default max on the progressbar is 100 so hardcoding it here for now
Amplitude = (int)(listener.AmplitudeFrac * 100);
SpectrogramHeight = spec.Height;
VerticalScaleImageSource = null;
VerticalScaleImageSource = ImageHelpers.BitmapToImageSource(spec.GetVerticalScale(LEGEND_WIDTH));
}
private void StartListening()
{
try
{
int sampleRate = 6000;
int fftSize = SelectedFftSize;
int stepSize = fftSize / 20;
SpectrogamImageSource = null;
listener?.Dispose();
listener = new Listener(DeviceCapabilities.IndexOf(selectedDevice), sampleRate);
spec = new Spectrogram.Spectrogram(sampleRate, fftSize, stepSize);
spec.SetWindow(FftSharp.Window.Rectangular(fftSize));
SpectrogramHeight = spec.Height;
VerticalScaleImageSource = null;
VerticalScaleImageSource = ImageHelpers.BitmapToImageSource(spec.GetVerticalScale(LEGEND_WIDTH));
}
catch (Exception ex)
{
Console.WriteLine("Exeption when attempting to start to listen: " + ex.Message);
}
}
