void HandleMidiInProc(IntPtr midiIn, MidiInMessage msg, IntPtr instance, IntPtr param1, IntPtr param2)
{
if (MessageReceived != null)
{
switch (msg)
{
case MidiInMessage.Data:
HandleData(param1, param2);
break;
case MidiInMessage.LongData:
HandleLongData(param1, param2);
break;
case MidiInMessage.MoreData:
// TODO input too slow, handle.
break;
case MidiInMessage.Error:
throw new InvalidOperationException($"Invalid MIDI message: {param1}");
case MidiInMessage.LongError:
throw new InvalidOperationException("Invalid SysEx message.");
default:
break;
}
}
}
private void MidiInProc(HMIDIIN hMidiIn, MidiInMessage wMsg, IntPtr dwInstance, IntPtr dwParam1, IntPtr dwParam2)
{
switch (wMsg)
{
case MidiInMessage.MIM_DATA:
HandleMidiData(dwParam1, dwParam2);
break;
case MidiInMessage.MIM_LONGDATA:
HandleLongData(dwParam1, dwParam2);
break;
case MidiInMessage.MIM_MOREDATA:
// doesn't happen, since we don't use the IO_STATUS flag
break;
case MidiInMessage.MIM_ERROR:
throw new InvalidOperationException($"Invalid MIDI message: {dwParam1}");
case MidiInMessage.MIM_LONGERROR:
throw new InvalidOperationException("Invalid SysEx message.");
default:
break;
}
}
private void InputCallback(HMIDIIN hMidiIn, MidiInMessage wMsg,
UIntPtr dwInstance, UIntPtr dwParam1, UIntPtr dwParam2)
{
_isInsideInputHandler = true;
try
{
switch (wMsg)
{
case MidiInMessage.MIM_DATA:
{
HandleInputMimData(dwParam1, dwParam2);
break;
}
case MidiInMessage.MIM_LONGDATA:
{
HandleInputMimLongData(dwParam1, dwParam2);
}
break;
case MidiInMessage.MIM_MOREDATA:
SysEx?.Invoke(new SysExMessage(this, new byte[] { 0x13 }, 13));
break;
case MidiInMessage.MIM_OPEN:
//SysEx(new SysExMessage(this, new byte[] { 0x01 }, 1));
break;
case MidiInMessage.MIM_CLOSE:
//SysEx(new SysExMessage(this, new byte[] { 0x02 }, 2));
break;
case MidiInMessage.MIM_ERROR:
SysEx?.Invoke(new SysExMessage(this, new byte[] { 0x03 }, 3));
break;
case MidiInMessage.MIM_LONGERROR:
SysEx?.Invoke(new SysExMessage(this, new byte[] { 0x04 }, 4));
break;
default:
SysEx?.Invoke(new SysExMessage(this, new byte[] { 0x05 }, 5));
break;
}
}
finally
{
_isInsideInputHandler = false;
}
}
private void Callback(IntPtr midiInHandle, MidiInMessage message, IntPtr userData, IntPtr messageParameter1, IntPtr messageParameter2)
{
switch (message)
{
case MidiInMessage.Open:
// message Parameter 1 & 2 are not used
break;
case MidiInMessage.Data:
// parameter 1 is packed MIDI message
// parameter 2 is milliseconds since MidiInStart
if (MessageReceived != null)
{
MessageReceived(this, new MidiInMessageEventArgs(messageParameter1.ToInt32(), messageParameter2.ToInt32()));
}
break;
case MidiInMessage.Error:
// parameter 1 is invalid MIDI message
if (ErrorReceived != null)
{
ErrorReceived(this, new MidiInMessageEventArgs(messageParameter1.ToInt32(), messageParameter2.ToInt32()));
}
break;
case MidiInMessage.Close:
// message Parameter 1 & 2 are not used
break;
case MidiInMessage.LongData:
// parameter 1 is pointer to MIDI header
// parameter 2 is milliseconds since MidiInStart
/*
Me.MIDIInHdr.lpData = Me.ddd
Me.MIDIInHdr.dwBufferLength = Len(Me.ddd)
Me.MIDIInHdr.dwFlags = 0
Err = midiInPrepareHeader(hMidiIn, Me.MIDIInHdr, Len(Me.MIDIInHdr))
If Err <> C_MMSYSERR_NOERROR Then
Me.pLastError = Err
Debug.WriteLine(CStr(Err))
End If
Err = midiInAddBuffer(hMidiIn, Me.MIDIInHdr, Len(Me.MIDIInHdr))
If Err <> C_MMSYSERR_NOERROR Then
Me.pLastError = Err
Debug.WriteLine(CStr(Err))
End If*/
break;
case MidiInMessage.LongError:
// parameter 1 is pointer to MIDI header
// parameter 2 is milliseconds since MidiInStart
break;
case MidiInMessage.MoreData:
// parameter 1 is packed MIDI message
// parameter 2 is milliseconds since MidiInStart
break;
}
}