public static ToneThumbEvent ParseEvent(byte[] data)
{
var type = (ThumbType)CharToInt(data[0]);
var dir = (ThumbDirection)CharToInt(data[1]);
var ev = new ToneThumbEvent(type, dir);
return(ev);
}
private void handleThumbEvent(ToneThumbEvent e)
{
if (!thumbMapping.ContainsKey(e.Type))
{
return;
}
var val = thumbMapping[e.Type];
switch (e.Direction)
{
case ThumbDirection.Clockwise:
val += ThumbStep;
break;
case ThumbDirection.CounterClockwise:
val -= ThumbStep;
break;
}
val = Math.Min(1, Math.Max(0, val));
thumbMapping[e.Type] = val;
switch (e.Type)
{
case ThumbType.CutoffLow:
case ThumbType.CutoffHigh:
updateFrequencyFilter();
break;
case ThumbType.Attack:
case ThumbType.Decay:
case ThumbType.Sustain:
case ThumbType.Release:
updateADSR();
break;
}
}
public EventReadResult Read()
{
if (!initialized)
{
serialPort.BaudRate = 9600;
serialPort.ReadTimeout = 500;
serialPort.WriteTimeout = 500;
serialPort.PortName = SerialPortName;
serialPort.DataBits = 8;
serialPort.Parity = Parity.None;
serialPort.StopBits = StopBits.One;
serialPort.Handshake = Handshake.None;
serialPort.Open();
initialized = true;
}
int typeInt;
do
{
try
{
var typeChar = (char)serialPort.ReadChar();
typeInt = (int)char.GetNumericValue(typeChar);
}
catch (TimeoutException)
{
return(EventReadResult.Timeout);
}
} while (typeInt > 4);
var type = (ToneEventType)typeInt;
try
{
byte[] buffer;
switch (type)
{
case ToneEventType.Key:
buffer = ReadBytes(ToneKeyEvent.DataLength);
Event = ToneKeyEvent.ParseEvent(buffer, 0);
break;
case ToneEventType.Thumb:
buffer = ReadBytes(ToneThumbEvent.DataLength);
Event = ToneThumbEvent.ParseEvent(buffer);
break;
case ToneEventType.Filter:
Event = new ToneFilterEvent();
break;
case ToneEventType.Wave:
Event = new ToneWaveEvent();
break;
}
}
catch (TimeoutException)
{
return(EventReadResult.Timeout);
}
return(EventReadResult.Success);
}