public void Start()
{
if (IsDisposed)
{
throw new ObjectDisposedException("InputDevice");
}
if (!_recording)
{
lock (_lockObject)
{
var result = 0;
const int bufcount = 4;
var currentBufCount = 0;
while (result == (int)EDeviceException.MmsyserrNoerror && currentBufCount < bufcount)
{
result = AddSysExBuffer();
currentBufCount++;
}
if (result == (int)EDeviceException.MmsyserrNoerror)
{
result = WindowsMultimediaDevice.midiInStart(Handle);
}
if (result != (int)EDeviceException.MmsyserrNoerror)
{
throw new InputDeviceException(result);
}
_recording = true;
}
}
}
private void Send(byte[] message)
{
_runningStatus = 0;
if (IsDisposed)
{
throw new ObjectDisposedException(GetType().Name);
}
lock (_lockObject)
{
_headerBuilder.InitializeBuffer(message);
_headerBuilder.Build();
int result = WindowsMultimediaDevice.midiOutPrepareHeader(Handle, _headerBuilder.Result, SizeOfMidiHeader);
if (result == (int)EDeviceException.MmsyserrNoerror)
{
_bufferCount++;
result = WindowsMultimediaDevice.midiOutLongMsg(Handle, _headerBuilder.Result, SizeOfMidiHeader);
if (result != (int)EDeviceException.MmsyserrNoerror)
{
WindowsMultimediaDevice.midiOutUnprepareHeader(Handle, _headerBuilder.Result, SizeOfMidiHeader);
_bufferCount--;
_headerBuilder.Destroy();
OnError(new ErrorEventArgs(new OutputDeviceException(result)));
}
}
else
{
_headerBuilder.Destroy();
OnError(new ErrorEventArgs(new OutputDeviceException(result)));
}
}
}
private void Send(int message)
{
lock (_lockObject)
{
var result = WindowsMultimediaDevice.midiOutShortMsg(Handle, message);
if (result != (int)EDeviceException.MmsyserrNoerror)
{
OnError(new ErrorEventArgs(new OutputDeviceException(result)));
}
}
}
private void ReleaseBuffer(IntPtr headerPtr)
{
int result = WindowsMultimediaDevice.midiInUnprepareHeader(Handle, headerPtr, SizeOfMidiHeader);
if (result != (int)EDeviceException.MmsyserrNoerror)
{
OnError(new ErrorEventArgs(new InputDeviceException(result)));
}
_headerBuilder.Destroy(headerPtr);
_bufferCount--;
}
public OutputDevice(int deviceId) : base(deviceId)
{
_lockObject = new object();
_bufferCount = 0;
_headerBuilder = new MidiHeaderBuilder();
Handle = 0;
_runningStatusEnabled = false;
_runningStatus = 0;
_midiOutProcIstance = HandleMessage;
var result = WindowsMultimediaDevice.midiOutOpen(ref Handle, deviceId, _midiOutProcIstance, 0, 0x30000);
if (result != (int)EDeviceException.MmsyserrNoerror)
{
OnError(new ErrorEventArgs(new OutputDeviceException(result)));
}
}
public InputDevice(int deviceId) : base(deviceId)
{
_bufferCount = 0;
_lockObject = new object();
_recording = false;
_headerBuilder = new MidiHeaderBuilder();
Handle = 0;
_resetting = false;
_sysExBufferSize = 0x1000;
_midiInProc = HandleMessage;
var result = WindowsMultimediaDevice.midiInOpen(ref Handle, deviceId, _midiInProc, 0, 0x30000);
if (result != (int)EDeviceException.MmsyserrNoerror)
{
throw new InputDeviceException(result);
}
}
public void Stop()
{
if (IsDisposed)
{
throw new ObjectDisposedException("InputDevice");
}
if (_recording)
{
lock (_lockObject)
{
int result = WindowsMultimediaDevice.midiInStop(Handle);
if (result != 0)
{
throw new InputDeviceException(result);
}
_recording = false;
}
}
}
public override void Reset()
{
if (IsDisposed)
{
throw new ObjectDisposedException(GetType().Name);
}
_runningStatus = 0;
lock (_lockObject)
{
int result = WindowsMultimediaDevice.midiOutReset(Handle);
if (result != (int)EDeviceException.MmsyserrNoerror)
{
OnError(new ErrorEventArgs(new OutputDeviceException(result)));
}
while (_bufferCount > 0)
{
Monitor.Wait(_lockObject);
}
}
}
protected override void Dispose(bool disposing)
{
if (disposing)
{
lock (_lockObject)
{
Reset();
int result = WindowsMultimediaDevice.midiOutClose(Handle);
if (result != (int)EDeviceException.MmsyserrNoerror)
{
OnError(new ErrorEventArgs(new OutputDeviceException(result)));
}
}
}
else
{
WindowsMultimediaDevice.midiOutReset(Handle);
WindowsMultimediaDevice.midiOutClose(Handle);
}
base.Dispose(disposing);
}
protected override void Dispose(bool disposing)
{
if (disposing)
{
lock (_lockObject)
{
Reset();
var result = WindowsMultimediaDevice.midiInClose(Handle);
if (result != 0)
{
throw new InputDeviceException(result);
}
}
}
else
{
WindowsMultimediaDevice.midiInReset(Handle);
WindowsMultimediaDevice.midiInClose(Handle);
}
base.Dispose(disposing);
}
public int AddSysExBuffer()
{
_headerBuilder.BufferLength = _sysExBufferSize;
_headerBuilder.Build();
var headerPtr = _headerBuilder.Result;
var result = WindowsMultimediaDevice.midiInPrepareHeader(Handle, headerPtr, SizeOfMidiHeader);
if (result == 0)
{
_bufferCount++;
result = WindowsMultimediaDevice.midiInAddBuffer(Handle, headerPtr, SizeOfMidiHeader);
if (result != 0)
{
WindowsMultimediaDevice.midiInUnprepareHeader(Handle, headerPtr, SizeOfMidiHeader);
_bufferCount--;
_headerBuilder.Destroy();
}
return(result);
}
_headerBuilder.Destroy();
return(result);
}
public override void Reset()
{
if (IsDisposed)
{
throw new ObjectDisposedException("InputDevice");
}
lock (_lockObject)
{
_resetting = true;
var result = WindowsMultimediaDevice.midiInReset(Handle);
if (result == (int)EDeviceException.MmsyserrNoerror)
{
_recording = false;
_resetting = false;
}
else
{
_resetting = false;
throw new InputDeviceException(result);
}
}
}
