//指定したイベントの前のイベントを得る
public MIDIEvent getPrevEvent(MIDIEvent eve)
{
if (eve == null || eve.BeforeIndex == null)
{
return(null);
}
return(Event[(int)eve.BeforeIndex]);
}
//指定したイベントの次のイベントを得る
public MIDIEvent getNextEvent(MIDIEvent eve)
{
if (eve == null || eve.AfterIndex == null)
{
return(null);
}
return(Event[(int)eve.AfterIndex]);
}
/// <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="MIDImessageLst">MIDIメッセージ</param>
/// <returns>新たに挿入したイベント</returns>
public MIDIEvent insertSpEvent(MIDIEvent TargetEvent, int Step, MIDISpEventType EventType, byte[][] MIDImessageLst)
{
//if (MIDImessageLst == null) return null;
MIDIEvent eve = new MIDIEvent();
eve.EventType = MIDIEventType.MetaSequencerSpecific;
eve.MIDIMessage = new byte[1] {
(byte)EventType
};
eve.MIDIMessageLst = MIDImessageLst;
eve.Step = Step;
insertEve(TargetEvent, Step, eve);
return(eve);
}
/// <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);
}
//指定したイベントをメモリから消去する(removeEventに比べ低速)
public bool clearEvent(MIDIEvent eve)
{
if (eve == null)
{
return(false);
}
MIDIEvent pEvent = getPrevEvent(eve);
MIDIEvent nEvent = getNextEvent(eve);
if (pEvent != null)
{
pEvent.AfterIndex = (nEvent == null) ? null : (int?)nEvent.Number;
}
if (nEvent != null)
{
nEvent.BeforeIndex = (pEvent == null) ? null : (int?)pEvent.Number;
}
pEvent.Step += eve.Step;
this.eCounter--;
this.eNumber--;
int num = eve.Number;
this.Event.Remove(eve);
foreach (MIDIEvent evt in this.Event)
{
if (evt.Number >= num)
{
evt.Number--;
}
if (evt.AfterIndex >= num)
{
evt.AfterIndex--;
}
if (evt.BeforeIndex >= num)
{
evt.BeforeIndex--;
}
}
return(true);
}
//指定したイベントを除外する（メモリには残る）
public bool removeEvent(MIDIEvent eve)
{
if (eve == null)
{
return(false);
}
MIDIEvent pEvent = getPrevEvent(eve);
MIDIEvent nEvent = getNextEvent(eve);
if (pEvent != null)
{
pEvent.AfterIndex = (nEvent == null) ? null : (int?)nEvent.Number;
}
if (nEvent != null)
{
nEvent.BeforeIndex = (pEvent == null) ? null : (int?)pEvent.Number;
}
pEvent.Step += eve.Step;
this.eCounter--;
return(true);
}
/// <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;
}
private void insertEve(MIDIEvent TargetEvent, int Step, MIDIEvent eve)
{
//イベントリストを生成
if (this.Event == null)
{
this.Event = new List <MIDIEvent>();
}
if (TargetEvent == null || this.Event.Count == 0 || this.eStartIndex == 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 = TargetEvent.Number;
eve.AfterIndex = TargetEvent.AfterIndex;
eve.Number = this.eNumber;
TargetEvent.AfterIndex = eve.Number;
this.Event.Add(eve);
if (eve.AfterIndex == null)
{
this.eEndIndex = this.eNumber;
}
else
{
TargetEvent = getNextEvent(eve);
TargetEvent.BeforeIndex = eve.Number;
}
this.eCounter++;
this.eNumber++;
}
