void timer_Tick(object sender, EventArgs e)
{
string note = String.Empty;
double cents = 0;
if (tuner.IsRecording())
{
double freq = tuner.CurrentFrequency;
note = "N/A";
cents = 0;
if (freq > 0)
{
Utility.FreqToNote(freq, out note, out cents);
}
Frequency = freq;
Note = note;
Cents = cents;
}
}
void StartListening(int device, double threshold)
{
Console.ForegroundColor = CONSOLE_INFO_COLOR;
string[] devices = tuner.GetDevices();
tuner.SetDevice(device);
bool res = tuner.StartListening();
if (res)
{
int recHandle = tuner.Stream;
int samplerate = tuner.GetSampleRate();
char[] loopCharSeq = { '\\', '|', '/', '-' };
int curChar = 0;
string emptyLine = new string(' ', Console.WindowWidth);
StringBuilder sb = new StringBuilder();
bool exitRequired = false;
// loop until record stream is active and no key is pressed
while (tuner.IsRecording() && exitRequired == false)
{
double freq = tuner.CurrentFrequency;
Console.CursorLeft = CURSOR_LEFT_POSITION;
sb.Append("freq: ");
sb.Append(freq.ToString("#0.000"));
sb.Append(" Hz ");
if (freq > 0)
{
sb.Append(" note: ");
string note = String.Empty;
double cents = 0;
Utility.FreqToNote(freq, out note, out cents);
sb.Append(note);
sb.Append(' ');
sb.Append(cents);
sb.Append(" cents ");
}
if (Console.KeyAvailable)
{
ConsoleKey input = Console.ReadKey(true).Key;
double tmpthreshold = tuner.Threshold;
bool isThresholdCommandRequested = false;
switch (input)
{
case ConsoleKey.Enter:
exitRequired = true;
break;
case ConsoleKey.RightArrow:
isThresholdCommandRequested = true;
tmpthreshold += STEP_THRESHOLD;
if (tmpthreshold <= MAX_THRESHOLD)
{
tuner.Threshold = tmpthreshold;
}
break;
case ConsoleKey.LeftArrow:
isThresholdCommandRequested = true;
tmpthreshold -= STEP_THRESHOLD;
if (tmpthreshold >= MIN_THRESHOLD)
{
tuner.Threshold = tmpthreshold;
}
break;
}
// set showThresholdValue = false
/*
* if (isThresholdCommandRequested)
* {
* showThresholdValue = true;
* if (timer.Enabled)
* timer.Stop();
* timer.Start();
* }
* */
}
sb.Append(loopCharSeq[curChar++ % 4]);
Console.Write(emptyLine);
Console.CursorTop--;
Console.Write(sb.ToString());
if (showThresholdValue)
{
Console.CursorTop += CURSOR_THRESHOLD_DISTANCE;
Console.CursorLeft = CURSOR_LEFT_POSITION;
Console.Write(emptyLine);
Console.CursorTop--;
sb.Clear();
sb.Append("Threshold: ");
sb.Append(tuner.Threshold);
Console.Write(sb.ToString());
Console.CursorTop -= CURSOR_THRESHOLD_DISTANCE;
}
sb.Clear();
Thread.Sleep(PROCESS_DELAY);
}
}
else
{
Console.ForegroundColor = CONSOLE_ERROR_COLOR;
Console.WriteLine("ERROR: Can't listen to this device");
}
tuner.Free();
}