public MainPage()
{
this.InitializeComponent();
App.Current.Suspending += Current_Suspending;
mArduino = new ArduinoManager();
mGPIO = new GPIOManager();
mGameNoteIndexs = new int[5] {
0, 0, 0, 0, 0
};
mCurrentGameNote = new MidiGameNote[5];
mIsInited = false;
mIsPlaying = false;
Task.Run(async() =>
{
SMFReader r = new SMFReader();
mSMF = await r.Read(@"Assets\out.mid");
var w = new MidiDeviceWatcher(MidiOutPort.GetDeviceSelector(), Dispatcher);
w.Start();
var col = w.GetDeviceInformationCollection();
var l = await DeviceInformation.FindAllAsync(MidiOutPort.GetDeviceSelector());
MIDIPort = await MidiOutPort.FromIdAsync(l[0].Id);
await mArduino.Init();
await mGPIO.Init(GpioController.GetDefault());
mGPIO.MidiButtonChanged += MGPIO_MidiButtonChanged;
mGPIO.JoyButtonChanged += MGPIO_JoyButtonChanged;
mPlayer = new SMFPlayer(mSMF, MIDIPort);
mPlayer.OnLED += Player_OnLED;
mPlayer.OnBarBeatChanged += Player_BarBeatChanged;
mPlayer.OnTempoChanged += Player_OnTempoChanged;
mGPIO.Ack();
mIsInited = true;
});
mVolTimer = new DispatcherTimer();
mVolTimer.Interval = new TimeSpan(0, 0, 0, 0, 100);
mVolTimer.Tick += MVolTimer_Tick;
mVolTimer.Start();
}
public SMFPlayer(SMF smf, IMidiOutPort p)
{
mSMF = smf;
mMidi = p;
}
public async Task <SMF> Read(String path)
{
SMF smf = new SMF();
ulong cursol = 0;
var sf = await Windows.ApplicationModel.Package.Current.InstalledLocation.GetFileAsync(path);
using (Stream fs = await sf.OpenStreamForReadAsync())
{
SMFByte = new byte[fs.Length];
fs.Read(SMFByte, 0, SMFByte.Length);
}
byte[] head = ReadAsBytes(cursol, 4); cursol += 4;
ulong head_len = ReadAsInt64(cursol); cursol += 4;
smf.FormatType = ReadAsInt(cursol); cursol += 2;
smf.TrackNum = ReadAsInt(cursol); cursol += 2;
smf.TimeMode = ReadAsInt(cursol); cursol += 2;
for (int i = 0; i < smf.TrackNum; i++)
{
byte[] track = ReadAsBytes(cursol, 4); cursol += 4;
ulong track_len = ReadAsInt64(cursol); cursol += 4;
ulong time = 0;
for (ulong c = cursol; c < track_len + cursol;)
{
var dt = ReadVlen(c); c += dt.Item2;
time += dt.Item1;
//小節へ変換
byte dat = SMFByte[c];
if ((dat & 0xF0) == 0xF0)
{
byte type = SMFByte[c + 1]; c += 2;
var len = ReadVlen(c); c += len.Item2;
byte[] exdat = ReadAsBytes(c, len.Item1); c += len.Item1;
ulong beat = time / smf.TimeMode;
uint tick = (uint)(time % smf.TimeMode);
switch (type)
{
case 0x51:
smf.SystemEvents.Add(new TempoEvent(beat, tick, exdat[0], exdat[1], exdat[2]));
break;
case 0x58:
smf.SystemEvents.Add(new MeterEvent(beat, tick, exdat[0], exdat[1], exdat[2], exdat[3]));
break;
case 0x59:
smf.SystemEvents.Add(new KeyEvent(beat, tick, exdat[0], exdat[1]));
break;
}
/*
*
* FF type len dats
* FF 01-05 len text
* FF 2F 00 End of Track
* FF 51 03 tempo(3byte) Set Tempo テンポ。 4分音符の長さをマイクロ秒単位で表現。
* FF 58 04 nn dd cc bb Time Signature 拍子nn=分子 dd=分子（2の負のべき乗で表す） cc=メトロノーム間隔（四分音符間隔なら18H） bb=四分音符あたりの三十二分音符の数
* FFH 59H 02H sf ml Key Signature キー（調）を表す sf=正・・シャープの数 負・・フラットの数 ml=0・・・長調 1・・・短調
*/
}
else
{
byte ch = (byte)(dat & 0x0F);
switch (dat & 0xF0)
{
case 0x80:
if (ch == 0 && SMFByte[c + 2] <= 5 && smf.GameNotes[SMFByte[c + 2]].Count > 0)
{
foreach (var mg in smf.GameNotes[SMFByte[c + 2]])
{
if (mg.Note == SMFByte[c + 1] && !mg.IsSetEnd)
{
mg.IsSetEnd = true;
mg.EndTick = time;
break;
}
}
}
else
{
smf.CHData[ch].Add(new NoteOFF(ch, time, SMFByte[c + 1], SMFByte[c + 2]));
}
c += 3;
break;
case 0x90:
if (ch == 0 && SMFByte[c + 2] <= 5)
{
smf.GameNotes[SMFByte[c + 2]].Add(
new MidiGameNote(time, SMFByte[c + 1]));
}
else
{
smf.CHData[ch].Add(new NoteON(ch, time, SMFByte[c + 1], SMFByte[c + 2]));
}
c += 3;
break;
case 0xB0:
if (SMFByte[c + 1] == 12)
{
smf.SystemEvents.Add(new LEDEvent(time / smf.TimeMode, (uint)(time % smf.TimeMode), SMFByte[c + 2]));
}
else
{
smf.CHData[ch].Add(new ControleChange(ch, time, SMFByte[c + 1], SMFByte[c + 2]));
}
c += 3;
break;
case 0xC0:
smf.CHData[ch].Add(new ProgramChange(ch, time, SMFByte[c + 1]));
c += 2;
break;
case 0xE0:
smf.CHData[ch].Add(new PitchBend(ch, time, SMFByte[c + 1], SMFByte[c + 2]));
c += 3;
break;
}
}
}
cursol += track_len;
}
smf.InitMidiMessage();
return(smf);
}
