public void Start()
{
if (running)
{
throw new Exception("Input is already started");
}
timeCallback = PortMidi.Pt_Time;
var err = PortMidi.Pm_OpenInput(out stream, deviceId, (IntPtr)0, 128, timeCallback, (IntPtr)0);
running = true;
insideSysexMessage = false;
this.thread = new Thread(Listen)
{
IsBackground = true
};
thread.Start();
}
private void Listen()
{
while (running)
{
var count = PortMidi.Pm_Read(stream, buffer, BufferSize);
for (int i = 0; i < count; i++)
{
var d = (uint)buffer[i].message;
var b0 = (byte)(d & 0xFF);
var b1 = (byte)((d & 0xFF00) >> 8);
var b2 = (byte)((d & 0xFF0000) >> 16);
var b3 = (byte)((d & 0xFF000000) >> 24);
if (b0 == 0xF0)
{
insideSysexMessage = true;
sysexMessage.Clear();
}
if (insideSysexMessage)
{
ParseSysex(new[] { b0, b1, b2, b3 });
if (!insideSysexMessage && DataReceived != null)
{
DataReceived.Invoke(sysexMessage.ToArray(), true);
}
}
else
{
var output = new[] { b0, b1, b2, b3 };
if (DataReceived != null)
{
DataReceived.Invoke(output.ToArray(), false);
}
}
}
Thread.Sleep(1);
}
}