/// <summary>
/// Internal Constructor, only called by the getter for the InstalledDevices property.
/// </summary>
/// <param name="deviceId">Position of this device in the list of all devices.</param>
/// <param name="caps">Win32 Struct with device metadata</param>
internal InputDevice(UIntPtr deviceId, MIDIINCAPS caps)
: base(caps.szPname)
{
_deviceId = deviceId;
_caps = caps;
_inputCallbackDelegate = InputCallback;
_isOpen = false;
_clock = null;
_nrpnWatcher = new NrpnWatcher(this);
}
/// <summary>
/// Opens the input device.
/// </summary>
/// <exception cref="InvalidOperationException">The device is already open.</exception>
/// <exception cref="DeviceException">The device cannot be opened.</exception>
/// <remarks>Note that Open() establishes a connection to the device, but no messages will
/// be received until <see cref="StartReceiving()"/> is called.</remarks>
public void Open()
{
lock (_lockObj)
{
CheckNotOpen();
_inputCallbackDelegate = this.InputCallback;
StartMessageProcessingThread();
CheckReturnCode(Win32API.midiInOpen(out _handle, _deviceId, _inputCallbackDelegate, (UIntPtr)0));
_isOpen = true;
}
}
/// <summary>
/// Private Constructor, only called by the getter for the InstalledDevices property.
/// </summary>
/// <param name="deviceId">Position of this device in the list of all devices.</param>
/// <param name="caps">Win32 Struct with device metadata</param>
private InputDevice(UIntPtr deviceId, Win32API.MIDIINCAPS caps)
: base(caps.szPname)
{
this.deviceId = deviceId;
this.caps = caps;
this.inputCallbackDelegate = new Win32API.MidiInProc(this.InputCallback);
this.isOpen = false;
this.clock = null;
}
internal WindowsMidiDriver() : base()
{
_callback = new Win32API.MidiInProc(this.InputCallback);
}