/// <summary>
/// 指定されたイベントの後ろにイベントを挿入する
/// </summary>
/// <param name="TargetEvent">このイベントの後ろに新たに入る</param>
/// <param name="Step">Step値</param>
/// <param name="EventType">イベントタイプ</param>
/// <param name="MIDImessage">MIDIメッセージ(Chは0固定であること)</param>
/// <returns>新たに挿入したイベント</returns>
public MIDIEvent insertEvent(MIDIEvent TargetEvent, int Step, MIDIEventType EventType, byte[] MIDImessage)
{
if (MIDImessage == null)
{
return(null);
}
MIDIEvent eve = new MIDIEvent();
eve.EventType = EventType;
eve.MIDIMessage = MIDImessage;
eve.MIDIMessageLst = null;
eve.Step = Step;
insertEve(TargetEvent, Step, eve);
return(eve);
}
/// <summary>
/// Tickを考慮せずに最後のイベントの後ろに追加する。
/// </summary>
/// <param name="Tick"></param>
/// <param name="EventType"></param>
/// <param name="MIDImessage"></param>
public void addEvent(int Step, MIDIEventType EventType, byte[] MIDImessage)
{
if (MIDImessage == null)
{
return;
}
MIDIEvent eve = new MIDIEvent();
eve.EventType = EventType;
eve.MIDIMessage = MIDImessage;
eve.MIDIMessageLst = null;
eve.Step = Step;
MIDIEvent lastEvent = this.getEndEvent();
if (lastEvent == null)//初めのイベント
{
eve.AfterIndex = null;
eve.BeforeIndex = null;
eve.Number = this.eNumber;
this.Event.Add(eve);
this.eStartIndex = 0;
this.eEndIndex = 0;
this.eCounter = 1;
this.eNumber++;
return;
}
eve.BeforeIndex = lastEvent.Number;
eve.AfterIndex = null;
eve.Number = this.eNumber;
this.eEndIndex = this.eNumber;
this.Event.Add(eve);
this.eCounter++;
this.eNumber++;
lastEvent.AfterIndex = eve.Number;
}
public MIDIEvent(int delta, byte type)
{
Delta = delta;
RawType = type;
Type = GetEventType(type);
}
IMIDIEvent GetNextEvent()
{
int delta = dReader.Read7BitEncodedInt32();
byte type = dReader.ReadByte();
if (type < 0x80)
{
// data byte found
if (runningStatus && lastEvent != null)
{
// if running status the read type byte is actually the first databyte
if (lastEvent.Type == MIDIEventType.ProgramChange || lastEvent.Type == MIDIEventType.KeyPressure)
{
return(new MIDIChannelEvent(delta, lastEvent.RawType, type, 0));
}
else
{
byte secondData = dReader.ReadByte();
return(new MIDIChannelEvent(delta, lastEvent.RawType, type, secondData));
}
}
throw new InvalidDataException("data byte found but running status not set");
}
else
{
MIDIEventType eType = MIDIEvent.GetEventType(type);
byte data1, data2;
switch (eType)
{
case MIDIEventType.ProgramChange:
case MIDIEventType.KeyPressure:
data1 = dReader.ReadByte();
lastEvent = new MIDIChannelEvent(delta, type, data1, 0);
break;
case MIDIEventType.NoteOff:
case MIDIEventType.NoteOn:
case MIDIEventType.PolyphonicKeyPressure:
case MIDIEventType.ControllerChange:
case MIDIEventType.ChannelPitchBend:
data1 = dReader.ReadByte();
data2 = dReader.ReadByte();
lastEvent = new MIDIChannelEvent(delta, type, data1, data2);
break;
case MIDIEventType.Meta:
data1 = dReader.ReadByte();
int length = dReader.Read7BitEncodedInt32();
byte[] buffer = dReader.ReadBytes(length);
lastEvent = new MIDIMetaEvent(delta, type, data1, buffer);
break;
default:
throw new NotImplementedException("unknown MIDI Event found !");
}
if (type >= 0xF0 && runningStatus)
{
runningStatus = false;
}
else
{
runningStatus = true;
}
return(lastEvent);
}
}
