static private void ReadTrack()
{
MIDITrack track = new MIDITrack();
track.events = new List <MIDIEvent>();
string trackChunkType = ReadString(4);
if (!trackChunkType.Equals("MTrk"))
{
throw new System.FormatException("No track chunk type has been found.");
}
int trackChunkLength = ReadInt32();
uint trackChunkEnd = m_index + (uint)trackChunkLength;
int accumulatedDeltaTicks = 0;
m_prevStatus = 0;
while (m_index < trackChunkEnd)
{
int deltaTicks = ReadVariableLengthInt();
accumulatedDeltaTicks += deltaTicks;
m_status = ReadByte();
MIDIEvent midiEvent = ReadEvent(accumulatedDeltaTicks);
if (midiEvent != null)
{
track.events.Add(midiEvent);
accumulatedDeltaTicks = 0;
}
}
m_song.tracks.Add(track);
}
/// <summary>
/// MIDIデータに歌詞を追加します。
/// </summary>
private void MakeLyric(MIDITrack midiTrack, List <MeasureAndTextBox> measures)
{
RemoveLyric(midiTrack);
foreach (MeasureAndTextBox measure in measures)
{
StringBuilder stringBuilder = new StringBuilder(measure.Lyric);
for (int i = 0; i < measure.MidiEvent.Length; i++)
{
if (stringBuilder.Length <= 0)
{
break;
}
string lyricChar = stringBuilder[0].ToString(); //先頭の文字を取得
stringBuilder.Remove(0, 1); //先頭の文字を削除
//次の文字が小文字の場合、一緒に歌詞に含める。
if (IsFirstCharacterLowerCase(stringBuilder.ToString()))
{
lyricChar += stringBuilder[0].ToString(); //先頭の文字を追加
stringBuilder.Remove(0, 1); //先頭の文字を削除
}
MIDIEvent targetEvent = measure.MidiEvent[i];
MIDIEvent lyricEvent = MIDIEvent.CreateLyric(targetEvent.Time, lyricChar);
midiTrack.InsertEventAfter(lyricEvent, targetEvent);
}
}
}
static void AnalyzeTrack(MIDITrack track)
{
foreach (IMIDIEvent lEvent in track.Events)
{
switch (lEvent.Type)
{
case MIDIEventType.NoteOn:
MIDIChannelEvent cEvent = (MIDIChannelEvent)lEvent;
Console.WriteLine($"Note on: {cEvent.Data1}");
break;
case MIDIEventType.Meta:
MIDIMetaEvent mEvent = (MIDIMetaEvent)lEvent;
if (mEvent.MetaType == 3)
{
Console.WriteLine($"Track name: {Encoding.ASCII.GetString(mEvent.Data)}");
}
if (mEvent.MetaType == 4)
{
Console.WriteLine($"Instrument: {Encoding.ASCII.GetString(mEvent.Data)}");
}
break;
}
}
}
public void TestRead()
{
midi.Read(TestUtils.GetResourceStream("Bass_sample.mid"));
Assert.AreEqual(2, midi.TrackCount);
int i = 0;
List <MIDIEvent> events = new List <MIDIEvent>();
MIDITrack track0 = midi.Tracks[0];
Assert.AreEqual(4, track0.EventCount);
events.Clear();
events.AddRange(track0.GetAllEvents());
Assert.AreEqual(0, events[0].Time);
Assert.AreEqual(MIDIMessageType.TimeSignature, events[0].Data.Type);
Assert.AreEqual(4, (events[0].Data as MIDITimeSignatureMessage).Numerator);
Assert.AreEqual(4, (events[0].Data as MIDITimeSignatureMessage).Denominator);
Assert.AreEqual(24, (events[0].Data as MIDITimeSignatureMessage).MetronomeClocks);
Assert.AreEqual(8, (events[0].Data as MIDITimeSignatureMessage).NotatedQuarterTicks);
Assert.AreEqual(0, events[1].Time);
Assert.AreEqual(MIDIMessageType.SetTempo, events[1].Data.Type);
Assert.AreEqual(500000, (events[1].Data as MIDITempoMessage).Tempo);
Assert.That((events[1].Data as MIDITempoMessage).BeatsPerMinute, Is.EqualTo(120).Within(0.001));
MIDITrack track1 = midi.Tracks[1];
Assert.AreEqual(31, track1.EventCount);
events.Clear();
events.AddRange(track1.GetAllEvents());
Assert.AreEqual(0, events[0].Time);
Assert.AreEqual(MIDIMessageType.ProgramChange, events[0].Data.Type);
Assert.AreEqual(0x21, (events[0].Data as MIDIProgramChangeMessage).Program);
Assert.AreEqual(0, events[1].Time);
Assert.AreEqual(MIDIMessageType.ControlChange, events[1].Data.Type);
Assert.AreEqual(MIDIControl.ChannelVolumeMSB, (events[1].Data as MIDIControlChangeMessage).Controller);
Assert.AreEqual(0, events[2].Time);
Assert.AreEqual(129, events[3].Time);
Assert.AreEqual(360, events[4].Time);
Assert.AreEqual(480, events[5].Time);
Assert.AreEqual(483, events[6].Time);
Assert.AreEqual(600, events[7].Time);
Assert.AreEqual(3450, events[29].Time);
Assert.AreEqual(MIDIMessageType.NoteOn, events[2].Data.Type);
Assert.AreEqual(MIDIMessageType.NoteOff, events[3].Data.Type);
Assert.AreEqual(MIDIMessageType.NoteOff, events[29].Data.Type);
Assert.AreEqual(0, (events[2].Data as MIDINoteMessage).Channel);
Assert.AreEqual(0x2D, (events[2].Data as MIDINoteMessage).Key);
Assert.AreEqual(0x2D, (events[3].Data as MIDINoteMessage).Key);
Assert.AreEqual(0x32, (events[22].Data as MIDINoteMessage).Key);
}
public void ReadMIDIFile(string path)
{
Debug.Log(path);
this.midiFile = File.OpenRead(path);
this.header = ParseHeader(midiFile);
this.tracks = new List <MIDITrack>();
this.currentNotes = new Dictionary <uint, MIDINote>();
for (int i = 0; i < header.number_of_tracks; i++)
{
MIDITrack track = ParseTrack(midiFile);
this.tracks.Add(track);
}
}
/// <summary>
/// MIDIデータから歌詞を削除します。
/// </summary>
public void RemoveLyric(MIDITrack midiTrack)
{
List <MIDIEvent> lyricEvents = new List <MIDIEvent>();
//ループ中にイベントを除外又は削除してはならない。イベントの消滅により次のイベントが探索できなくなるからだ。
foreach (MIDIEvent midiEvent in midiTrack)
{
if (midiEvent.IsLyric)
{
lyricEvents.Add(midiEvent);
}
}
foreach (MIDIEvent midiEvent in lyricEvents)
{
midiTrack.RemoveEvent(midiEvent);
}
}
private void Reset()
{
if (m_song == null)
{
return;
}
m_elapsedTime = -m_song.firstMeasureDuration;
m_score = 0;
m_totalNoteCount = 0;
m_correctNoteCount = 0;
m_hitStreak = 0;
m_multiplier = 1.0f;
m_leftHandSongNoteIndex = 0;
m_rightHandSongNoteIndex = 0;
m_leftHandSongNotes.Clear();
m_rightHandSongNotes.Clear();
for (int i = 0; i < m_song.tracks.Count; i++)
{
MIDITrack track = m_song.tracks[i];
foreach (MIDIEvent midiEvent in track.events)
{
if (midiEvent.GetType() == typeof(MIDINoteEvent))
{
MIDINoteEvent noteEvent = midiEvent as MIDINoteEvent;
if (noteEvent.isNoteOn)
{
if (i == 1)
{
m_leftHandSongNotes.Add(noteEvent);
}
else if (i == 0)
{
m_rightHandSongNotes.Add(noteEvent);
}
}
}
}
}
m_deviceNoteTimestamps.Clear();
}
static private void ForwardMinNextEvent(MIDIEvent minNextEvent, List <MIDIEvent> nextEventList)
{
for (int i = 0; i < m_song.tracks.Count; i++)
{
MIDITrack track = m_song.tracks[i];
int nextEventIndex = track.events.IndexOf(minNextEvent);
if (nextEventIndex == -1)
{
continue;
}
nextEventList[i] = null;
nextEventIndex++;
if (nextEventIndex < track.events.Count)
{
nextEventList[i] = track.events[nextEventIndex];
}
}
}
// Use this for initialization
void Start()
{
midi = GetComponent <MIDI>();
midi.ReadMIDIFile(midiFilePath);
int trackCount = midi.tracks.Count;
if (generateOnlyFromFirstTrack)
{
trackCount = 1;
}
for (int i = 0; i < trackCount; i++)
{
MIDITrack track = midi.tracks[i];
foreach (MIDIEvent e in track.events)
{
Debug.Log("type of event" + e.GetType().ToString());
if (e.GetType() != typeof(MIDINote))
{
continue;
}
MIDINote note = (MIDINote)e;
GameObject platform;
if (this.platforms.Length > 0)
{
int idx = Random.Range(0, this.platforms.Length);
platform = GameObject.Instantiate(this.platforms[idx]) as GameObject;
}
else
{
platform = GameObject.CreatePrimitive(PrimitiveType.Cube);
}
Vector3 pos = new Vector3(note.absoluteStartTime, (float)note.note, 0.0f);
platform.transform.position = pos;
}
}
}
private void PrepareNextEventIndexList()
{
for (int i = 0; i < m_song.tracks.Count; i++)
{
MIDITrack track = m_song.tracks[i];
for (int j = 0; j < track.events.Count; j++)
{
if (track.events[j].timestamp >= m_elapsedTime - 0.001f)
{
m_nextEventIndexList[i] = j;
break;
}
else
{
m_nextEventIndexList[i] = track.events.Count;
}
}
}
}
void OnGUI()
{
if (GUI.Button(new Rect(10, 70, 120, 30), "Play"))
{
AudioSource audioSrc = GetComponent <AudioSource>();
MIDITrack track = midi.tracks[0];
foreach (MIDIEvent e in track.events)
{
Debug.Log("type of event" + e.GetType().ToString());
if (e.GetType() != typeof(MIDINote))
{
continue;
}
MIDINote note = (MIDINote)e;
Debug.Log("note:" + note.note);
audioSrc.clip = sampler.samples[note.note];
audioSrc.PlayScheduled((double)note.absoluteStartTime);
}
}
}
public void Update(float deltaTime)
{
if (m_isPlaying && !m_isSleeping)
{
deltaTime = deltaTime * m_speedFactor;
NotifyUpdate(deltaTime);
m_elapsedTime += deltaTime;
CalcCurrentMeasure();
for (int i = 0; i < m_song.tracks.Count; i++)
{
MIDITrack track = m_song.tracks[i];
bool processedAllEventsWithCurrentTimestamp = false;
while (!processedAllEventsWithCurrentTimestamp)
{
int nextEventIndex = m_nextEventIndexList[i];
if (nextEventIndex >= track.events.Count)
{
break;
}
MIDIEvent nextEvent = track.events[nextEventIndex];
if (nextEvent.timestamp <= m_elapsedTime)
{
NotifyEvent(nextEvent, i);
m_nextEventIndexList[i]++;
}
else
{
processedAllEventsWithCurrentTimestamp = true;
}
}
}
}
}
public void TestRead()
{
midi.ReadHMP(TestUtils.GetResourceStream("vgame20.hmp"));
Assert.AreEqual(13, midi.TrackCount);
Assert.AreEqual(HMPValidDevice.Default, midi.Tracks[0].HMPDevices);
for (int i = 1; i < midi.TrackCount; ++i)
{
Assert.AreEqual(HMPValidDevice.All, midi.Tracks[i].HMPDevices);
}
foreach (MIDITrack track in midi.Tracks)
{
Assert.AreEqual(0, track.HMPBranchPoints.Count);
}
List <MIDIEvent> events = new List <MIDIEvent>();
MIDITrack track1 = midi.Tracks[1];
Assert.AreEqual(2952, track1.EventCount);
events.Clear();
events.AddRange(track1.GetAllEvents());
Assert.AreEqual(0, events[2].Time);
Assert.AreEqual(5743, events[120].Time);
Assert.AreEqual(5977, events[300].Time);
}
MIDITrack ParseTrack(FileStream inFile)
{
MIDITrack track = new MIDITrack();
// MThd
{
byte[] _mtrk = new byte[4];
inFile.Read(_mtrk, 0, 4);
Array.Reverse(_mtrk);
track.MTrk = BitConverter.ToUInt32(_mtrk, 0);
if(track.MTrk != (UInt32)MIDI_EVENT_TYPES.TRACK_CHUNK_ID){
throw new Exception("wrong track header");
}
}
// track length
{
byte[] _len = new byte[4];
inFile.Read(_len, 0, 4);
Array.Reverse(_len);
track.track_length = BitConverter.ToUInt32(_len, 0);
}
// start reading events
long pos = inFile.Position;
this.timeOffset = 0;
while(inFile.Position < pos + track.track_length){
int deltaTime = ParseVarLen(inFile);
this.timeOffset += deltaTime;
MIDIEvent midi_event = new MIDIEvent();
midi_event.delta_time = deltaTime;
midi_event.event_type = inFile.ReadByte();
switch(midi_event.event_type){
case (int)MIDI_EVENT_TYPES.META_EVENT:
ParseMetaEvent(inFile, midi_event);
// Debug.Log("Meta event");
break;
case (int)MIDI_EVENT_TYPES.SYSEX_EVENT:
case (int)MIDI_EVENT_TYPES.SYSEX_CHUNK:
ParseSysexEvent(inFile, midi_event);
// Debug.Log("Sysex event");
break;
default:
midi_event = ParseChannelEvent(inFile, midi_event);
// Debug.Log("channel event");
break;
}
Debug.Log(midi_event);
track.events.Add(midi_event);
}
return track;
}
public byte[] ProcessMessage(MIDITrack track, int messageIndex)
{
return(track.MidiEvents[messageIndex].MidiMessage);
}
private void ShowNotesInVisibleRegion(float startTimeOfVisibleRegion, float endTimeOfVisibleRegion)
{
for (int i = 0; i < m_noteObjectsRingBuffer.GetSize(); i++)
{
GameObject noteObject = m_noteObjectsRingBuffer.GetCurrentElement();
m_noteObjectsRingBuffer.Advance();
noteObject.transform.localPosition = new Vector3(0.0f, 0.0f, -10.0f);
noteObject.transform.localScale = new Vector3(0.1f, 0.1f, 0.1f);
}
List <MIDINoteEvent> pressedNoteEvents = new List <MIDINoteEvent>();
for (int i = 0; i < m_song.tracks.Count; i++)
{
if (!m_isRightHandEnabled && i == 0)
{
continue;
}
if (!m_isLeftHandEnabled && i == 1)
{
continue;
}
MIDITrack track = m_song.tracks[i];
foreach (MIDIEvent midiEvent in track.events)
{
if (midiEvent.GetType() == typeof(MIDINoteEvent))
{
MIDINoteEvent noteEvent = midiEvent as MIDINoteEvent;
if (noteEvent.isNoteOn &&
noteEvent.timestamp >= startTimeOfVisibleRegion - 5.0f &&
noteEvent.timestamp <= endTimeOfVisibleRegion + 5.0f)
{
pressedNoteEvents.Add(noteEvent);
}
else if (!noteEvent.isNoteOn &&
noteEvent.timestamp >= startTimeOfVisibleRegion - 5.0f &&
noteEvent.timestamp <= endTimeOfVisibleRegion + 5.0f)
{
MIDINoteEvent releasedNoteEvent = noteEvent;
foreach (MIDINoteEvent pressedNoteEvent in pressedNoteEvents)
{
if (pressedNoteEvent.note == releasedNoteEvent.note)
{
if (releasedNoteEvent.timestamp < pressedNoteEvent.timestamp)
{
break;
}
pressedNoteEvents.Remove(pressedNoteEvent);
GameObject noteObject = m_noteObjectsRingBuffer.GetCurrentElement();
m_noteObjectsRingBuffer.Advance();
float startX, startY, startZ, endX, endY, endZ;
startZ = (pressedNoteEvent.timestamp - startTimeOfVisibleRegion) * m_defaultSpeed;
endZ = (releasedNoteEvent.timestamp - startTimeOfVisibleRegion) * m_defaultSpeed;
float offset = GetNoteOffset(noteEvent.note, m_octavePitch);
if (IsBlackNote(noteEvent.note))
{
startX = offset * m_noteWidth + 0.0015f;
endX = (offset + 0.5f) * m_noteWidth - 0.0015f;
startY = 0.0f - 0.059f;
endY = 0.0121f - 0.059f;
}
else
{
startX = offset * m_noteWidth;
endX = (offset + 1.0f) * m_noteWidth;
startY = 0.0f - 0.059f;
endY = m_noteHeight - 0.059f;
}
noteObject.transform.localPosition = new Vector3((startX + endX) * 0.5f, (startY + endY) * 0.5f, (startZ + endZ) * 0.5f);
noteObject.transform.localScale = new Vector3(Mathf.Abs(endX - startX), Mathf.Abs(endY - startY), Mathf.Abs(endZ - startZ));
// determine vertex colors
Color color = Color.HSVToRGB((float)i / (float)m_song.tracks.Count, 1.0f, 1.0f);
if (IsBlackNote(noteEvent.note))
{
color *= 0.5f;
}
Mesh mesh = noteObject.GetComponent <MeshFilter>().mesh;
Vector3[] vertPositions = mesh.vertices;
Color[] vertColors = new Color[vertPositions.Length];
for (int j = 0; j < vertPositions.Length; j++)
{
float t = vertPositions[j].z + 0.5f;
vertColors[j] = Color.Lerp(color, color * 0.5f, t);
}
mesh.colors = vertColors;
break;
}
}
}
}
}
}
}
MIDITrack ParseTrack(FileStream inFile)
{
MIDITrack track = new MIDITrack();
// MThd
{
byte[] _mtrk = new byte[4];
inFile.Read(_mtrk, 0, 4);
Array.Reverse(_mtrk);
track.MTrk = BitConverter.ToUInt32(_mtrk, 0);
if (track.MTrk != (UInt32)MIDI_EVENT_TYPES.TRACK_CHUNK_ID)
{
throw new Exception("wrong track header");
}
}
// track length
{
byte[] _len = new byte[4];
inFile.Read(_len, 0, 4);
Array.Reverse(_len);
track.track_length = BitConverter.ToUInt32(_len, 0);
}
// start reading events
long pos = inFile.Position;
this.timeOffset = 0;
while (inFile.Position < pos + track.track_length)
{
int deltaTime = ParseVarLen(inFile);
this.timeOffset += deltaTime;
MIDIEvent midi_event = new MIDIEvent();
midi_event.delta_time = deltaTime;
midi_event.event_type = inFile.ReadByte();
switch (midi_event.event_type)
{
case (int)MIDI_EVENT_TYPES.META_EVENT:
ParseMetaEvent(inFile, midi_event);
// Debug.Log("Meta event");
break;
case (int)MIDI_EVENT_TYPES.SYSEX_EVENT:
case (int)MIDI_EVENT_TYPES.SYSEX_CHUNK:
ParseSysexEvent(inFile, midi_event);
// Debug.Log("Sysex event");
break;
default:
midi_event = ParseChannelEvent(inFile, midi_event);
// Debug.Log("channel event");
break;
}
Debug.Log(midi_event);
track.events.Add(midi_event);
}
return(track);
}
private void ExecuteButton_Click(object sender, RoutedEventArgs e)
{
OutputStackPanel.Children.Clear();
Measures.Clear();
if (!File.Exists(MidiFileName))
{
return;
}
try
{
MidiData = new MIDIData(MidiFileName);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
return;
}
if (MidiData.TimeMode != MIDIData.TimeModes.TPQN)
{
MessageBox.Show("TPQN以外の形式には対応していません。", "エラー", MessageBoxButton.OK, MessageBoxImage.Error);
return;
}
MIDITrack track = TargetTrack;
if (track == null)
{
MessageBox.Show("未対応のフォーマットです。\n対応フォーマットは「Format0」と「Format1」です。", "エラー", MessageBoxButton.OK, MessageBoxImage.Error);
return;
}
//結合できるイベントを結合
foreach (MIDIEvent midiEvent in track)
{
if (midiEvent.IsNoteOn) //ノートONで
{
if (!midiEvent.IsCombined) //結合されていない場合
{
midiEvent.Combine();
}
}
}
int currentMeasure = -1;
List <MIDIEvent> events = new List <MIDIEvent>(); //一小節分のノートイベントを保管する。
//ノートのある小節の個数分、テキストボックス追加
foreach (MIDIEvent midiEvent in track)
{
if (midiEvent.IsNoteOn)
{
int measure = MidiData.BreakTime(midiEvent.Time).Measure; //このノートの所属している小節取得
if (measure > currentMeasure) //次の小節に行ったら
{
if (events.Count != 0) //小節へイベントの追加、その後クリア
{
Measures.Last().MidiEvent = events.ToArray();
events.Clear();
}
TextBox textBox = AddTextBox(measure); //ここで作成しないと、小節番号がわからない。
Measures.Add(new MeasureAndTextBox(textBox));
events.Add(midiEvent);
currentMeasure = measure;
}
else
{
events.Add(midiEvent);
}
}
}
//最後のイベント追加
if (events.Count != 0)
{
Measures.Last().MidiEvent = events.ToArray();
events.Clear();
}
SaveButton.IsEnabled = true;
}