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;
}
}
public MidiInputLongDataBuffer(HMIDIIN inputHandle, int bufferSize = 4096)
{
_inputHandle = inputHandle;
var header = new MIDIHDR()
{
lpData = Marshal.AllocHGlobal(bufferSize),
dwBufferLength = (uint)bufferSize,
};
try
{
Ptr = Marshal.AllocHGlobal(Marshal.SizeOf <MIDIHDR>());
Marshal.StructureToPtr(header, Ptr, false);
}
catch
{
Free();
throw;
}
}
public static extern MMRESULT midiInStop(HMIDIIN hMidiIn);
/// <summary>
/// Opens a MIDI input device.
/// </summary>
/// NOTE: This is adapted from the original Win32 function in order to make it typesafe.
///
/// Win32 docs: http://msdn.microsoft.com/en-us/library/ms711610(VS.85).aspx
public static MMRESULT midiInOpen(out HMIDIIN lphMidiIn, UIntPtr uDeviceID,
MidiInProc dwCallback, UIntPtr dwCallbackInstance)
{
return(midiInOpen(out lphMidiIn, uDeviceID, dwCallback, dwCallbackInstance,
dwCallback == null ? MidiOpenFlags.CALLBACK_NULL : MidiOpenFlags.CALLBACK_FUNCTION));
}
public static extern MMRESULT midiInUnprepareHeader(HMIDIIN hMidiIn, IntPtr headerPtr, UInt32 cbMidiInHdr);
public static extern MMRESULT midiInReset(HMIDIIN hMidiIn);
public static extern MMRESULT midiInClose(HMIDIIN hMidiIn);
private static extern MMRESULT midiInOpen(out HMIDIIN lphMidiIn, UIntPtr uDeviceID,
MidiInProc dwCallback, UIntPtr dwCallbackInstance, MidiOpenFlags dwFlags);
public static extern uint midiInReset(HMIDIIN hmi);
public static extern uint midiInStop(HMIDIIN hmi);
public static extern uint midiInAddBuffer(HMIDIIN hmi, [NativeTypeName("LPMIDIHDR")] MIDIHDR *pmh, uint cbmh);
public static extern uint midiInUnprepareHeader(HMIDIIN hmi, [NativeTypeName("LPMIDIHDR")] MIDIHDR *pmh, uint cbmh);
public static extern uint midiInClose(HMIDIIN hmi);
public static extern MMRESULT midiInReset(HMIDIIN hMidiIn);
public static extern MMRESULT midiInClose(HMIDIIN hMidiIn);
public static extern uint midiInGetID(HMIDIIN hmi, [NativeTypeName("LPUINT")] uint *puDeviceID);
public static extern MMRESULT midiInAddBuffer(HMIDIIN hMidiIn, IntPtr lpMidiInHdr, UInt32 cbMidiInHdr);
public static extern uint midiInMessage(HMIDIIN hmi, uint uMsg, [NativeTypeName("DWORD_PTR")] nuint dw1, [NativeTypeName("DWORD_PTR")] nuint dw2);
/// <summary>
/// Opens a MIDI input device.
/// </summary>
/// NOTE: This is adapted from the original Win32 function in order to make it typesafe.
///
/// Win32 docs: http://msdn.microsoft.com/en-us/library/ms711610(VS.85).aspx
public static MMRESULT midiInOpen(out HMIDIIN lphMidiIn, UIntPtr uDeviceID,
MidiInProc dwCallback, UIntPtr dwCallbackInstance)
{
return midiInOpen(out lphMidiIn, uDeviceID, dwCallback, dwCallbackInstance,
dwCallback == null ? MidiOpenFlags.CALLBACK_NULL : MidiOpenFlags.CALLBACK_FUNCTION);
}
public static extern MMRESULT midiInAddBuffer(HMIDIIN hMidiIn, IntPtr lpMidiInHdr, UInt32 cbMidiInHdr);
public static extern MMRESULT midiInStop(HMIDIIN hMidiIn);
public static extern MMRESULT midiInUnprepareHeader(HMIDIIN hMidiIn, IntPtr headerPtr, UInt32 cbMidiInHdr);
private static extern MMRESULT midiInOpen(out HMIDIIN lphMidiIn, UIntPtr uDeviceID,
MidiInProc dwCallback, UIntPtr dwCallbackInstance, MidiOpenFlags dwFlags);
public static extern MMRESULT midiInPrepareHeader(HMIDIIN hMidiIn, IntPtr headerPtr, uint cbMidiInHdr);
