private static Image Render(MaxPeakGetter peakProvider, Settings settings)
{
var b = new Bitmap(settings.Width, settings.TopHeight + settings.BottomHeight);
using (var g = Graphics.FromImage(b))
{
g.FillRectangle(new SolidBrush(Color.White), 0, 0, b.Width, b.Height);
var midPoint = settings.TopHeight;
int x = 0;
PeakInfo currentPeak;
while ((currentPeak = peakProvider.GetNextPeak()) != null)
{
for (int n = 0; n < settings.PixelsPerPeak; n++)
{
var lineHeight = settings.TopHeight * currentPeak.Max;
g.DrawLine(settings.TopPeakPen, x, midPoint, x, midPoint - lineHeight);
lineHeight = settings.BottomHeight * currentPeak.Min;
g.DrawLine(settings.BottomPeakPen, x, midPoint, x, midPoint - lineHeight);
x++;
}
}
}
return(b);
}
public Image Render(string selectedFile, Settings settings)
{
using (var reader = new AudioFileReader(selectedFile))
{
int bytesPerSample = (reader.WaveFormat.BitsPerSample / 8);
var samples = reader.Length / (bytesPerSample);
settings.Width = (int)samples;
//var samplesPerPixel = settings.Width;
//var stepSize = settings.PixelsPerPeak;
//settings.Width = settings.PixelsPerPeak * samples;
var peakGetter = new MaxPeakGetter();
peakGetter.Init(reader, 1);
return(Render(peakGetter, settings));
}
}
