public MidiEventBase(MidiEventBase aMidiEvent)
{
delta = aMidiEvent.GetDelta();
state = ( byte )(aMidiEvent.GetState() | aMidiEvent.GetChannel());
data1 = aMidiEvent.GetData1();
data2 = aMidiEvent.GetData2();
}
public static MidiEventBase Execute(int aDelta, byte aState, AByteArray aByteArray)
{
MidiEventBase lMidiEvent = null;
switch (aState & 0xF0)
{
case 0x80:
lMidiEvent = new MidiEventNoteOff(aDelta, aState, aByteArray);
break;
case 0x90:
MidiEventNoteOn lNoteOn = new MidiEventNoteOn(aDelta, aState, aByteArray);
if (lNoteOn.GetVelocity() == 0)
{
lMidiEvent = new MidiEventNoteOff(lNoteOn);
}
else
{
lMidiEvent = lNoteOn;
}
break;
case 0xA0:
lMidiEvent = new MidiEventKeyPressure(aDelta, aState, aByteArray);
break;
case 0xB0:
lMidiEvent = new MidiEventControlChange(aDelta, aState, aByteArray);
break;
case 0xC0:
lMidiEvent = new MidiEventProgramChange(aDelta, aState, aByteArray);
break;
case 0xD0:
lMidiEvent = new MidiEventChannelPressure(aDelta, aState, aByteArray);
break;
case 0xE0:
lMidiEvent = new MidiEventPitchWheelChange(aDelta, aState, aByteArray);
break;
case 0xF0:
lMidiEvent = new MidiEventSystemExclusive(aDelta, aState, aByteArray);
break;
default:
// 未定義のイベントメッセージ.
Logger.Error("Undefined Midi Event:" + aState);
throw new Exception();
}
return(lMidiEvent);
}
// トラックのイベントを読み込む.
private void ReadTrack(AByteArray aByteArray)
{
int lDelta = 0;
byte lStatePre = 0;
int lPositionPre = aByteArray.Position;
// トラック終了まで読み込む.
while (aByteArray.Position < lPositionPre + size)
{
lDelta += GetVariableLengthByte(aByteArray);
byte lState = aByteArray.ReadByte();
// ランニングステータス対応.
if (lState < 0x80)
{
lState = lStatePre;
aByteArray.SubPosition(1);
}
lStatePre = lState;
if (lState != 0xFF)
{
// MIDIイベント読み込み.
MidiEventBase lMidiEvent = MidiEventReader.Execute(lDelta, lState, aByteArray);
midiEventList.Add(lMidiEvent);
}
else
{
// メタイベント読み込み.
MetaEventBase lMetaEvent = MetaEventReader.Execute(lDelta, aByteArray);
metaEventList.Add(lMetaEvent);
}
}
}
public MidiEventNoteOff(MidiEventBase aMidiEvent)
: base(aMidiEvent)
{
}
