Ejemplo n.º 1
0
        /// <summary>
        /// Gets all MIDI resources needed to use the selected device.
        /// </summary>
        private void Acquire(MidiDevice device)
        {
            lock (_acquireLock)
            {
                if (device != null)
                {
                    // setup the input device
                    if (device.CanRead)
                    {
                        // grab the device id by name
                        uint deviceId = 0;
                        if (_deviceIdByName.TryGetValue("IN_" + device.ID, out deviceId) == false)
                        {
                            throw new Exception("Could not find MIDI input device " + device.ID);
                        }

                        // start streaming the input
                        WinMM.CheckReturnCode(Win32API.midiInOpen(out _inputHandle, (UIntPtr)deviceId, _callback, (UIntPtr)0));
                        WinMM.CheckReturnCode(Win32API.midiInStart(_inputHandle));
                        _inputOpen = true;
                    }
                    else
                    {
                        _inputOpen = false;
                    }

                    // setup the output device
                    if (device.CanWrite)
                    {
                        // grab the device id by name
                        uint deviceId = 0;
                        if (_deviceIdByName.TryGetValue("OUT_" + device.ID, out deviceId) == false)
                        {
                            throw new Exception("Could not find MIDI output device " + device.ID);
                        }

                        // setup the device
                        WinMM.CheckReturnCode(Win32API.midiOutOpen(out _outputHandle, (UIntPtr)deviceId, null, (UIntPtr)0));
                        _outputOpen = true;
                    }
                    else
                    {
                        _outputOpen = false;
                    }
                }
            }
        }
Ejemplo n.º 2
0
        /// <summary>
        /// Releases all currently used MIDI resources.
        /// </summary>
        private void Release()
        {
            lock (_acquireLock)
            {
                if (_inputOpen)
                {
                    WinMM.CheckReturnCode(Win32API.midiInStop(_inputHandle));
                    WinMM.CheckReturnCode(Win32API.midiInClose(_inputHandle));
                    _inputOpen = false;
                }

                if (_outputOpen)
                {
                    WinMM.CheckReturnCode(Win32API.midiOutReset(_outputHandle));// TODO: not sure if we should
                    WinMM.CheckReturnCode(Win32API.midiOutClose(_outputHandle));
                    _outputOpen = false;
                }
            }
        }