private void Callback(IntPtr midiInHandle, MidiInterop.MidiInMessage message, IntPtr userData, IntPtr messageParameter1, IntPtr messageParameter2)
{
switch(message)
{
case MidiInterop.MidiInMessage.Open:
// message Parameter 1 & 2 are not used
break;
case MidiInterop.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 MidiInterop.MidiInMessage.Error:
// parameter 1 is invalid MIDI message
if (ErrorReceived != null)
{
ErrorReceived(this, new MidiInMessageEventArgs(messageParameter1.ToInt32(), messageParameter2.ToInt32()));
}
break;
case MidiInterop.MidiInMessage.Close:
// message Parameter 1 & 2 are not used
break;
case MidiInterop.MidiInMessage.LongData:
// parameter 1 is pointer to MIDI header
// parameter 2 is milliseconds since MidiInStart
break;
case MidiInterop.MidiInMessage.LongError:
// parameter 1 is pointer to MIDI header
// parameter 2 is milliseconds since MidiInStart
break;
case MidiInterop.MidiInMessage.MoreData:
// parameter 1 is packed MIDI message
// parameter 2 is milliseconds since MidiInStart
break;
}
}
private void Callback(IntPtr midiInHandle, MidiInterop.MidiOutMessage message, IntPtr userData, IntPtr messageParameter1, IntPtr messageParameter2)
{
}
/// <summary>
/// Opens a specified MIDI out device
/// </summary>
/// <param name="deviceNo">The device number</param>
public MidiOut(int deviceNo)
{
this.callback = new MidiInterop.MidiOutCallback(Callback);
MmException.Try(MidiInterop.midiOutOpen(out hMidiOut, (IntPtr)deviceNo, callback, IntPtr.Zero, MidiInterop.CALLBACK_FUNCTION), "midiOutOpen");
}
/// <summary>
/// Sends a MIDI message to the MIDI out device
/// </summary>
/// <param name="message">The message to send</param>
public void Send(int message)
{
MmException.Try(MidiInterop.midiOutShortMsg(hMidiOut, message), "midiOutShortMsg");
}
/// <summary>
/// Reset the MIDI in device
/// </summary>
public void Reset()
{
MmException.Try(MidiInterop.midiInReset(hMidiIn), "midiInReset");
}
/// <summary>
/// Stop the MIDI in device
/// </summary>
public void Stop()
{
MmException.Try(MidiInterop.midiInStop(hMidiIn), "midiInStop");
}
/// <summary>
/// Start the MIDI in device
/// </summary>
public void Start()
{
MmException.Try(MidiInterop.midiInStart(hMidiIn), "midiInStart");
}
