public static byte[] ExtractAudioBytes(Vinyl vinyl, ExtractionParameters parameters, ExtractionOptions options)
{
int startX = vinyl.FindStartX(parameters.Center);
vinyl._trackedLastExtraction = options.HasFlag(ExtractionOptions.SaveTrack);
if (vinyl._trackedLastExtraction)
{
vinyl._trackBitmap = vinyl._recordImage.GetOriginal();
}
int centerX = parameters.Center.X;
int centerY = parameters.Center.Y;
if (vinyl._trackedLastExtraction)
{
vinyl.MarkTrack(centerX, centerY, Color.Red);
}
var audioBytes = new byte[vinyl.SamplesCount(startX)];
double lapRadiusDelta = parameters.TrackWidth + parameters.GapWidth;
double outerRadius = centerX - startX - (int)(vinyl.TrackWidth / 2);
double radius = outerRadius;
double angle = Math.PI;
double samplesCount = radius * 4;
double angleDelta = (Math.PI * 2) / samplesCount;
double radiusDelta = (lapRadiusDelta / samplesCount);
int lapcount = 0;
for (int i = 0; i < audioBytes.Length; i++)
{
if (angle < -Math.PI)
{
radius = outerRadius - ++lapcount * lapRadiusDelta;
angle = Math.PI;
}
int x = (int)Math.Round(centerX + radius * Math.Cos(angle));
int y = (int)Math.Round(centerY + radius * Math.Sin(angle));
audioBytes[i] = vinyl._recordImage[x, y];
if (vinyl._trackedLastExtraction)
{
vinyl.MarkTrack(x, y, Color.Red);
}
radius -= radiusDelta;
angle -= angleDelta;
}
return(audioBytes);
}
public static byte[] ExtractAudioBytes(Vinyl vinyl, ExtractionOptions options)
{
var parameters = new ExtractionParameters
{
Center = vinyl.Center,
GapWidth = vinyl.GapWidth,
TrackWidth = vinyl.TrackWidth
};
return(ExtractAudioBytes(vinyl, parameters, options));
}
public static byte[] ExtractAudioBytes(Vinyl vinyl)
{
return(ExtractAudioBytes(vinyl, ExtractionOptions.None));
}