/// <summary> This is the background thread responsible for playing the SingleBeats. </summary>
private void ThreadEntryPrt()
{
while (_running)
{
//Get next MIDI Command, waiting until it is time to play it.
SimpleMidiMessage next = _source.GetNextMidiCommand(block: true);
Winmm.midiOutShortMsg(_handle, next.Data); //Send MIDI Comand to winmm
}
}
public override bool Stop()
{
if (Enabled)
{
bool stopped = Winmm.Stop(_timerId);
_enabled = !stopped;
return(stopped);
}
return(false);
}
public static void ExecuteCommand(string cmd)
{
var err = Winmm.mciSendString(cmd, null, 0, 0);
if (err != 0)
{
StringBuilder buf = new StringBuilder(256);
Winmm.mciGetErrorString(err, buf, 256);
string errStr = buf.ToString();
throw new MCIException(string.Format("ErrorCode: {0} ,Info: {1}", err.ToString(), errStr));
}
}
public override void Start()
{
if (Enabled)
{
return;
}
uint interval = Convert.ToUInt32(Math.Round(_intervalLength, 0));
_timerId = Winmm.Start(interval, TimerCallback);
_startTime = DateTime.Now;
_enabled = true;
}
/// <summary>
/// Disables high precision timers. Use before exiting the app.
/// </summary>
public static void DisableHighPrecisionTimers()
{
lock (_lock)
{
if (_useDefaultTimers || !_isHighPrecision)
{
return;
}
Winmm.TimeEndPeriod(1);
_isHighPrecision = false;
}
}
/// <summary>
/// Enables high precision timers. Use before calling anything else.
/// </summary>
public static void EnableHighPrecisionTimers()
{
lock (_lock)
{
if (_useDefaultTimers || _isHighPrecision)
{
return;
}
Winmm.TimeBeginPeriod(1);
_isHighPrecision = true;
}
}
private void LoadAndPlay(SoundFlags flags)
{
if (!RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
return;
}
if (_streamData == null)
{
int streamLen = (int)_stream.Length;
_streamData = new byte[streamLen];
_stream.Read(_streamData, 0, streamLen);
}
Winmm.PlaySound(_streamData, IntPtr.Zero, SoundFlags.SND_MEMORY | SoundFlags.SND_NODEFAULT | flags);
}
/// <summary>
/// Creates a new instance of the WinmmOut class which opens a MIDI port at the specified device ID.
/// </summary>
/// <param name="deviceID">The underlaying hardware port used to play music.
/// Windows should have a built-in virtual synthesizer as device 0.
/// The next port(if available) will be port 1 and so on.</param>
/// <param name="beatsPerMinutes">Specifies the length of a beat, which is the unit of time used throughout MIDI Gremlin.
/// If left at 60, a beat will be the same as a second.</param>
public WinmmOut(uint deviceID, int beatsPerMinutes = 60)
{
timeMannager = new VariableBpmCounter();
BeatsPerMinute = beatsPerMinutes;
uint numberOfDevices = Winmm.midiOutGetNumDevs();
DeviceID = numberOfDevices < deviceID ? 0 : deviceID;
if (0 != Winmm.midiOutOpen(out _handle, DeviceID, IntPtr.Zero, IntPtr.Zero, 0))
{
throw new Exception("Opening MIDI device unsuccessful. Is the device already open somwhere else?");
}
_workThread = new Thread(ThreadEntryPrt)
{
IsBackground = true
};
}
private readonly int DEAD = 16000; //スライドパッドが入力の閾値。16000だとだいたい中央から半分以上倒したら入力扱い
//この辺の処理は殆ど参考URLのパクリ。ゲームパッドの接続数を１つに限定している
private GamePadObserver()
{
var joy_info = new Winmm.JOYINFO();
var timer = new DispatcherTimer(DispatcherPriority.Normal)
{
Interval = new TimeSpan(0, 0, 0, 0, 10)
};
timer.Tick += (sender1, e1) => {
if (Winmm.joyGetPos(0, ref joy_info) == 0)
{
onEnterKeyDown.OnNext((joy_info.wButtons & Winmm.JOY_BUTTON1) != 0);
var x_pos = joy_info.wXpos;
var y_pos = joy_info.wYpos;
var y_flow = 0;
var x_flow = 0;
if (y_pos < CENTER_POINT - DEAD)
{
y_flow = 1;
}
else if (y_pos > CENTER_POINT + DEAD)
{
y_flow = -1;
}
if (x_pos > CENTER_POINT + DEAD)
{
x_flow = 1;
}
else if (x_pos < CENTER_POINT - DEAD)
{
x_flow = -1;
}
inHorizontalInput.OnNext(x_flow);
inVerticalInput.OnNext(y_flow);
}
};
timer.Start();
}
/// <summary>
/// Closes the WinmmOut instance safely.
/// </summary>
public void Dispose()
{
Winmm.midiOutClose(_handle);
_disposed = true;
}
public void Stop()
{
Winmm.PlaySound((byte[])null, IntPtr.Zero, SoundFlags.SND_PURGE);
}
