public static IReadOnlyList <MidiDevice> GetLaunchpads()
{
var devices = new List <WinmmMidiDevice>();
int inDeviceCount = NativeMethods.midiInGetNumDevs();
for (uint i = 0; i < inDeviceCount; i++)
{
var caps = new MIDIINCAPS();
if (NativeMethods.midiInGetDevCaps(i, ref caps, MIDIINCAPS.Size) <= 0)
{
continue;
}
foreach (var deviceType in DeviceInfo.SupportedDevices)
{
if (caps.szPname.Contains(deviceType.MidiName))
{
devices.Add(new WinmmMidiDevice(caps.szPname, caps.szPname, deviceType.Type));
}
}
}
return(devices);
}
protected override bool ConnectInternal(bool isNormal)
{
int inDeviceCount = NativeMethods.midiInGetNumDevs();
uint?inDeviceId = null;
for (uint i = 0; i < inDeviceCount; i++)
{
var caps = new MIDIINCAPS();
NativeMethods.midiInGetDevCaps(i, ref caps, MIDIINCAPS.Size);
if (caps.szPname == Id)
{
inDeviceId = i;
break;
}
}
if (inDeviceId == null)
{
return(false);
}
int outDeviceCount = NativeMethods.midiOutGetNumDevs();
uint?outDeviceId = null;
for (uint i = 0; i < outDeviceCount; i++)
{
var caps = new MIDIOUTCAPS();
NativeMethods.midiOutGetDevCaps(i, ref caps, MIDIOUTCAPS.Size);
if (caps.szPname == Id.Replace("MIDIIN", "MIDIOUT"))
{
outDeviceId = i;
break;
}
}
if (outDeviceId == null)
{
return(false);
}
if (NativeMethods.midiInOpen(out var inDeviceHandle, inDeviceId.Value, _inputCallback, 0, 0x00030000) != 0)
{
return(false);
}
if (NativeMethods.midiOutOpen(out var outDeviceHandle, outDeviceId.Value, _outputCallback, 0, 0x00030000) != 0)
{
return(false);
}
if (NativeMethods.midiInStart(inDeviceHandle) != 0)
{
return(false);
}
_outBuffer = new MidiBuffer(outDeviceHandle, SysEx.MaxMessageLength);
_inDeviceId = inDeviceId.Value;
_outDeviceId = outDeviceId.Value;
_inDeviceHandle = inDeviceHandle;
_outDeviceHandle = outDeviceHandle;
_inputCallback = InputEvent;
_outputCallback = OutputEvent;
_inputClosed.Reset();
_outputClosed.Reset();
return(true);
}
public static extern int midiInGetDevCaps(uint uDeviceID, ref MIDIINCAPS lpMidiInCaps, uint cbMidiInCaps);