/// <summary>
/// Handles and filters the incoming midi events.
/// </summary>
/// <param name="events">The midi events for the current cycle.</param>
public void Process(VstEventCollection events)
{
foreach (VstEvent evnt in events)
{
if (evnt.EventType == VstEventTypes.MidiEvent)
{
VstMidiEvent midiEvent = (VstMidiEvent)evnt;
//System.Diagnostics.Debug.WriteLine("Receiving Midi Event:" + midiEvent.MidiData[0], "VST.NET");
// pass note on and note off to the sample manager
if ((midiEvent.Data[0] & 0xF0) == 0x80)
{
NoteOff?.Invoke(midiEvent.Data[1]);
}
if ((midiEvent.Data[0] & 0xF0) == 0x90)
{
// note on with velocity = 0 is a note off
if (midiEvent.Data[2] == 0)
{
NoteOff?.Invoke(midiEvent.Data[1]);
}
else
{
NoteOn?.Invoke(midiEvent.Data[1]);
}
}
}
}
}
private void Decode(byte[] message)
{
byte status = message[0];
switch (status & 0b1111_0000)
{
case Midi.Status.NoteOffBitmask:
if (NoteOffMessage.TryDecode(message, out var noteOffMessage))
{
NoteOff?.Invoke(this, in noteOffMessage);
}
break;
case Midi.Status.NoteOnBitmask:
if (NoteOnMessage.TryDecoce(message, out var noteOnMessage))
{
NoteOn?.Invoke(this, in noteOnMessage);
}
break;
case Midi.Status.PolyphonicKeyPressureBitmask:
if (PolyphonicKeyPressureMessage.TryDecode(message, out var polyphonicKeyPressureMessage))
{
PolyphonicKeyPressure?.Invoke(this, in polyphonicKeyPressureMessage);
}
break;
case Midi.Status.ControlChangeBitmask:
if (ControlChangeMessage.TryDecode(message, out var controlChangeMessage))
{
_nrpnInterpreters[(int)controlChangeMessage.Channel].HandleControlChangeMessage(in controlChangeMessage);
}
break;
case Midi.Status.ProgramChangeBitmask:
if (ProgramChangeMessage.TryDecode(message, out var programChangeMessage))
{
ProgramChange?.Invoke(this, in programChangeMessage);
}
break;
case Midi.Status.ChannelPressureBitmask:
if (ChannelPressureMessage.TryDecode(message, out var channelPressureMessage))
{
ChannelPressure?.Invoke(this, in channelPressureMessage);
}
break;
case Midi.Status.PitchBendChange:
if (PitchBendMessage.TryDecode(message, out var pitchBendMessage))
{
PitchBend?.Invoke(this, in pitchBendMessage);
}
break;
default:
Log.Error("Unknown message type {Bitmask}", $"{status & 0b1111_0000:X2}");
break;
}
}
private void lastKeyOff()
{
if (lastKeyOn >= 0)
{
NoteOffEvent noe = new NoteOffEvent((SevenBitNumber)lastKeyOn, (SevenBitNumber)127);
NoteOff?.Invoke(this, noe);
lastKeyOn = -1;
}
}
private void Update()
{
foreach (var key in virtualKeysDict.Keys)
{
if (Input.GetKeyDown(key))
{
NoteOn?.Invoke(virtualKeysDict[key], 1f);
}
if (Input.GetKeyUp(key))
{
NoteOff?.Invoke(virtualKeysDict[key]);
}
}
}
/// <summary>
/// Метод, вызывающий событие NoteOff с заданными параметрами.
/// </summary>
/// <param name="noteNo"></param>
/// <param name="velocity"></param>
private void OnNoteOff(byte noteNo, byte velocity)
{
NoteOff?.Invoke(this, new MidiNoteEventArgs(noteNo, velocity, pressedNotesCount));
}
private void Decode(byte[] message)
{
byte status = message[0];
switch (status & 0b1111_0000)
{
case Midi.Status.NoteOffBitmask:
if (NoteOffMessage.TryDecode(message, out var noteOffMessage))
{
NoteOff?.Invoke(this, in noteOffMessage);
}
break;
case Midi.Status.NoteOnBitmask:
if (NoteOnMessage.TryDecode(message, out var noteOnMessage))
{
NoteOn?.Invoke(this, in noteOnMessage);
}
break;
case Midi.Status.PolyphonicKeyPressureBitmask:
if (PolyphonicKeyPressureMessage.TryDecode(message, out var polyphonicKeyPressureMessage))
{
PolyphonicKeyPressure?.Invoke(this, in polyphonicKeyPressureMessage);
}
break;
case Midi.Status.ControlChangeBitmask:
if (ControlChangeMessage.TryDecode(message, out var controlChangeMessage))
{
_nrpnInterpreters[(int)controlChangeMessage.Channel].HandleControlChangeMessage(in controlChangeMessage);
}
break;
case Midi.Status.ProgramChangeBitmask:
if (ProgramChangeMessage.TryDecode(message, out var programChangeMessage))
{
ProgramChange?.Invoke(this, in programChangeMessage);
}
break;
case Midi.Status.ChannelPressureBitmask:
if (ChannelPressureMessage.TryDecode(message, out var channelPressureMessage))
{
ChannelPressure?.Invoke(this, in channelPressureMessage);
}
break;
case Midi.Status.PitchBendChange:
if (PitchBendMessage.TryDecode(message, out var pitchBendMessage))
{
PitchBend?.Invoke(this, in pitchBendMessage);
}
break;
case Midi.Status.System:
switch (status)
{
case Midi.Status.SysExStart:
if (SysExMessage.TryDecode(message, out var sysExMessage))
{
SysEx?.Invoke(this, in sysExMessage);
}
break;
case Midi.Status.MidiTimeCodeQuarterFrame:
if (MidiTimeCodeQuarterFrameMessage.TryDecode(message, out var timeCodeQuarterFrameMessage))
{
MidiTimeCodeQuarterFrame?.Invoke(this, in timeCodeQuarterFrameMessage);
}
break;
case Midi.Status.SongPositionPointer:
if (SongPositionPointerMessage.TryDecode(message, out var songPositionPointerMessage))
{
SongPositionPointer?.Invoke(this, in songPositionPointerMessage);
}
break;
case Midi.Status.SongSelect:
if (SongSelectMessage.TryDecode(message, out var songSelectMessage))
{
SongSelect?.Invoke(this, in songSelectMessage);
}
break;
case Midi.Status.TuneRequest:
if (TuneRequestMessage.TryDecode(message, out var tuneRequestMessage))
{
TuneRequest?.Invoke(this, in tuneRequestMessage);
}
break;
default:
Log.Error("Unknown system message type {Status}", $"{status:X2}");
break;
}
break;
default:
Log.Error("Unknown message type {Bitmask}", $"{status & 0b1111_0000:X2}");
break;
}
}
private void HandleNoteOff(int noteNumber)
{
currentNoteNumbers.Remove(noteNumber);
NoteOff?.Invoke(noteNumber);
}