private void timerUpdateSpectrogram_Tick(object sender, EventArgs e)
{
if (spec is null)
{
return;
}
// capture new FFTs and note their indexes
int fftsBefore = spec.FftsProcessed;
spec.Add(audioControl1.listener.GetNewAudio());
int fftsAfter = spec.FftsProcessed;
int newFftCount = fftsAfter - fftsBefore;
int[] newFftIndexes = Enumerable.Range(spec.Width - newFftCount - 1, newFftCount).ToArray();
var ffts = spec.GetFFTs();
// optionally apply some sort of filter or AGC
if (settings.agcMode == 1)
{
foreach (int fftIndex in newFftIndexes)
{
ffts[fftIndex] = AGC.Method1_SortedFloorMean(ffts[fftIndex], power: settings.agcPower);
}
}
else if (settings.agcMode == 2)
{
foreach (int fftIndex in newFftIndexes)
{
ffts[fftIndex] = AGC.Method2_QuicksortFloor(ffts[fftIndex], power: settings.agcPower);
}
}
// display the annotated spectrogram
var spotsToShow = spots.Where(x => x.ageSec < (11 * 60)).ToList();
Annotate.Spectrogram(spec, band, spotsToShow, bmpSpectrogram, bmpVericalScale, cbBands.Checked, true, settings);
pictureBox1.Refresh();
GC.Collect();
}
private void SaveGrab(bool uploadToo = false)
{
int pxTop = spec.PixelY(band.upperFreq - band.dialFreq, settings.verticalReduction) - settings.grabSavePxAbove;
int pxBot = spec.PixelY(band.lowerFreq - 200 - band.dialFreq, settings.verticalReduction) + settings.grabSavePxBelow;
int height = pxBot - pxTop;
int widthWithScale = spec.Width + verticalScaleWidth;
using (Bitmap bmpFull = new Bitmap(widthWithScale, spec.Height, PixelFormat.Format32bppPArgb))
using (Bitmap bmpCropped = new Bitmap(widthWithScale, height, PixelFormat.Format32bppPArgb))
using (Graphics gfx = Graphics.FromImage(bmpCropped))
{
// annotate a full-size spectrogram
var spotsToShow = spots.Where(x => x.ageSec < (11 * 60)).ToList();
Annotate.Spectrogram(spec, band, spotsToShow, bmpFull, bmpVericalScale, false, false, settings);
// draw the full-size spectrogram on the cropped Bitmap
gfx.DrawImage(bmpFull, 0, -pxTop);
// decorate the cropped bitmap
string msg = $"FSKview {version.Major}.{version.Minor}.{version.Build}: " +
$"{settings.stationInformation} {UtcDateStamp} {UtcTimeStampNoSec} UTC";
Annotate.Logo(gfx, msg, 3, height - 3);
Annotate.TimeTicks(gfx, height, spec.SecPerPx);
// ensure output folders exist
string pathSaveWeb = $"{appPath}/grabs-web";
string pathSaveAll = $"{appPath}/grabs-all";
if (!Directory.Exists(pathSaveWeb))
{
Directory.CreateDirectory(pathSaveWeb);
}
if (!Directory.Exists(pathSaveAll))
{
Directory.CreateDirectory(pathSaveAll);
}
// save the cropped image for the web
ImageFormat imgFmt = ImageFormat.Bmp;
if (settings.grabFileName.EndsWith(".png", StringComparison.OrdinalIgnoreCase))
{
imgFmt = ImageFormat.Png;
}
else if (settings.grabFileName.EndsWith(".jpg", StringComparison.OrdinalIgnoreCase))
{
imgFmt = ImageFormat.Jpeg;
}
else if (settings.grabFileName.EndsWith(".gif", StringComparison.OrdinalIgnoreCase))
{
imgFmt = ImageFormat.Gif;
}
bmpCropped.Save($"{pathSaveWeb}/{settings.grabFileName}", imgFmt);
// save the cropped bitmap for stitching
string stitchFileName = $"{pathSaveAll}/{UtcDateStamp.Replace("-", "")}-{UtcTimeStamp.Replace(":", "")}.png";
if (settings.showScaleOnAllGrabs)
{
bmpCropped.Save(stitchFileName, ImageFormat.Png);
}
else
{
using (Bitmap bmpCropped2 = new Bitmap(spec.Width, height, PixelFormat.Format32bppPArgb))
using (Graphics gfx2 = Graphics.FromImage(bmpCropped2))
{
gfx2.DrawImage(bmpCropped, 0, 0);
bmpCropped2.Save(stitchFileName, ImageFormat.Png);
}
}
Status($"Saved spectrogram as {settings.grabFileName}");
if (uploadToo)
{
Enabled = false;
Status($"Performing FTP upload...");
Application.DoEvents();
string result = FTP.Upload(settings.ftpServerAddress, settings.ftpRemoteSubfolder, settings.ftpUsername,
settings.DeObfuscate(settings.ftpObfuscatedPassword), $"{pathSaveWeb}/{settings.grabFileName}");
if (result.Contains("Not logged in"))
{
result = "Incorrect username/password";
}
else if (result.Contains("File name not allowed"))
{
result = "Invalid path (does the target folder exist?)";
}
else if (result == "upload successful")
{
result = "FTP upload successful";
}
else
{
result = "FTP ERROR (get full message in settings)\n" + result;
}
Status(result);
Enabled = true;
}
}
}
