//-- Play a note by number (0-127), specifying a velocity value (0-127)
public void PlayNote(byte Note, byte Velocity)
{
byte Msg = 0;
Int32 MidiMsg = default(Int32);
if (_Engaged == false)
{
return;
}
Msg = StuffByte(GetByte(MIDIStatusMessages.NoteOn), _OutputChannel);
MidiMsg = StuffInt32(Msg, GetByte(Note + _Transpose), Velocity, 0);
try
{
MIDI.midiOutShortMsg(hMidiOUT, MidiMsg);
if (_NoteDuration > 0)
{
NotesOff no = default(NotesOff);
no.Note = GetByte(Note + _Transpose);
no.ShutoffTime = DateAndTime.DateAdd(DateInterval.Second, _NoteDuration, DateAndTime.Now);
lock (notesToTurnOff)
{
notesToTurnOff.Add(no);
}
}
}
catch (Exception ex)
{
throw ex;
}
}
//-- This is called by the thread to shut off a note after it has played.
// Only called when NoteDuration is set to non-zero
protected void ShutoffNoteCallback()
{
NotesOff no = default(NotesOff);
bool there = false;
byte Msg = 0;
Int32 MidiMsg = default(Int32);
while (!(_Engaged == false))
{
lock (notesToTurnOff)
{
if (notesToTurnOff.Count > 0)
{
no = (NotesOff)notesToTurnOff[0];
there = true;
}
else
{
there = false;
}
}
if (there)
{
while (!(DateAndTime.Now >= no.ShutoffTime))
{
System.Threading.Thread.Sleep(1);
if (_Engaged == false)
{
notesToTurnOff.Clear();
ev.Set();
return;
}
}
Msg = StuffByte(GetByte(MIDIStatusMessages.NoteOff), _OutputChannel);
MidiMsg = StuffInt32(Msg, no.Note, 64, 0);
try
{
MIDI.midiOutShortMsg(hMidiOUT, MidiMsg);
}
catch (Exception ex)
{
break; // TODO: might not be correct. Was : Exit Do
}
lock (notesToTurnOff)
{
notesToTurnOff.RemoveAt(0);
}
}
System.Threading.Thread.Sleep(1);
}
notesToTurnOff.Clear();
ev.Set();
}
