private static TrackChunk AddEventsOfNote(
TrackChunk chunkito,
Note n,
byte channel)
{
var noteOn = new NoteOnEvent()
{
Channel = new FourBitNumber(channel),
DeltaTime = n.StartSinceBeginningOfSongInTicks,
NoteNumber = new SevenBitNumber(n.Pitch),
Velocity = new SevenBitNumber(n.Volume)
};
chunkito.Events.Add(noteOn);
var noteOff = new NoteOffEvent()
{
Channel = new FourBitNumber(channel),
DeltaTime = n.EndSinceBeginningOfSongInTicks,
NoteNumber = new SevenBitNumber(n.Pitch)
};
chunkito.Events.Add(noteOff);
foreach (var pb in n.PitchBending)
{
var p = new PitchBendEvent()
{
Channel = new FourBitNumber(channel),
DeltaTime = pb.TicksSinceBeginningOfSong,
PitchValue = pb.Pitch
};
chunkito.Events.Add(p);
}
return(chunkito);
}
public void PitchBend_CreateWithPitchValue()
{
const ushort pitchValue = 1234;
var pitchBendEvent = new PitchBendEvent(pitchValue);
Assert.AreEqual(pitchValue, pitchBendEvent.PitchValue, "Pitch value is set incorrectly.");
}
private void InitializePitchBendData(PitchBendEvent pitchBendEvent, long time)
{
if (pitchBendEvent == null)
{
return;
}
_pitchValueLines[pitchBendEvent.Channel].SetValue(time, pitchBendEvent.PitchValue);
}
private void UpdateCurrentPitchBendData(PitchBendEvent pitchBendEvent)
{
if (pitchBendEvent == null)
{
return;
}
_currentPitchValues[pitchBendEvent.Channel] = pitchBendEvent.PitchValue;
}
public void PitchBend_SetPitchValue()
{
const ushort pitchValue = 1234;
var pitchBendEvent = new PitchBendEvent();
pitchBendEvent.PitchValue = pitchValue;
Assert.AreEqual(pitchValue, pitchBendEvent.PitchValue, "Pitch value is set incorrectly.");
}
public void PitchBendEvent()
{
var value = GetRandomValue();
var x = new PitchBendEvent(5, PitchWheelStep.WholeStepDown);
var y = ReDeserialize(x);
Assert.That(x.UpperBits == y.UpperBits);
Assert.That(x.LowerBits == y.LowerBits);
Assert.That(x.Position == y.Position);
}
private void _read()
{
_vTime = new VlqBase128Be(m_io);
_eventHeader = m_io.ReadU1();
if (EventHeader == 255)
{
_metaEventBody = new MetaEventBody(m_io, this, m_root);
}
if (EventHeader == 240)
{
_sysexBody = new SysexEventBody(m_io, this, m_root);
}
switch (EventType)
{
case 224: {
_eventBody = new PitchBendEvent(m_io, this, m_root);
break;
}
case 144: {
_eventBody = new NoteOnEvent(m_io, this, m_root);
break;
}
case 208: {
_eventBody = new ChannelPressureEvent(m_io, this, m_root);
break;
}
case 192: {
_eventBody = new ProgramChangeEvent(m_io, this, m_root);
break;
}
case 160: {
_eventBody = new PolyphonicPressureEvent(m_io, this, m_root);
break;
}
case 176: {
_eventBody = new ControllerEvent(m_io, this, m_root);
break;
}
case 128: {
_eventBody = new NoteOffEvent(m_io, this, m_root);
break;
}
}
}
public static SongSimplification GetSimplificationZeroOfSong(string base64encodedMidiFile)
{
var notesObj = new List <Note>();
var midiFile = MidiFile.Read(base64encodedMidiFile);
long songDuration = GetSongDurationInTicks(base64encodedMidiFile);
var isSustainPedalOn = false;
var notesOnBecauseOfSustainPedal = new List <Note>();
var instrumentOfChannel = new byte[16];
short chunkNo = -1;
foreach (TrackChunk chunk in midiFile.Chunks)
{
chunkNo++;
var currentNotes = new List <Note>();
long currentTick = 0;
foreach (MidiEvent eventito in chunk.Events)
{
currentTick += eventito.DeltaTime;
if (eventito is ProgramChangeEvent)
{
var pg = eventito as ProgramChangeEvent;
instrumentOfChannel[pg.Channel] = (byte)pg.ProgramNumber.valor;
continue;
}
if (IsSustainPedalEventOn(eventito))
{
isSustainPedalOn = true;
continue;
}
if (IsSustainPedalEventOff(eventito))
{
isSustainPedalOn = false;
foreach (var n in notesOnBecauseOfSustainPedal)
{
ProcessNoteOff(n.Pitch, currentNotes, notesObj, currentTick,
n.Instrument, (byte)chunkNo);
}
continue;
}
if (eventito is NoteOnEvent)
{
NoteOnEvent noteOnEvent = eventito as NoteOnEvent;
if (noteOnEvent.Velocity > 0 || isSustainPedalOn == false)
{
ProcessNoteOn(noteOnEvent.NoteNumber, noteOnEvent.Velocity,
currentNotes, notesObj, currentTick,
instrumentOfChannel[noteOnEvent.Channel],
IsPercussionEvent(eventito), (byte)chunkNo);
}
continue;
}
if (eventito is NoteOffEvent && isSustainPedalOn == false)
{
NoteOffEvent noteOffEvent = eventito as NoteOffEvent;
ProcessNoteOff(noteOffEvent.NoteNumber, currentNotes, notesObj, currentTick,
instrumentOfChannel[noteOffEvent.Channel], (byte)chunkNo);
continue;
}
if (eventito is PitchBendEvent)
{
PitchBendEvent bendito = eventito as PitchBendEvent;
foreach (var notita in currentNotes)
{
PitchBendEvent maldito = bendito.Clone() as PitchBendEvent;
maldito.DeltaTime = currentTick;
notita.PitchBending.Add(new PitchBendItem
{
Note = notita,
Pitch = maldito.PitchValue,
TicksSinceBeginningOfSong = maldito.DeltaTime
});
}
continue;
}
}
}
var retObj = new SongSimplification()
{
Notes = notesObj,
SimplificationVersion = 0,
NumberOfVoices = chunkNo
};
return(retObj);
}
private static Tuple <Option <MidiEvent>, int, byte> NextEvent(List <byte> trackData, int startIndex, byte lastMidiChannel)
{
var i = startIndex - 1;
MidiEvent midiEvent = null;
{
int deltaTime;
{
var lengthTemp = new List <byte>();
do
{
i += 1;
lengthTemp.Add(trackData.ElementAt(i));
} while (trackData.ElementAt(i) > 0x7F);
deltaTime = VariableLengthUtil.decode_to_int(lengthTemp);
}
i += 1;
var eventTypeValue = trackData.ElementAt(i);
// MIDI Channel Events
if ((eventTypeValue & 0xF0) < 0xF0)
{
var midiChannelEventType = (byte)(eventTypeValue & 0xF0);
var midiChannel = (byte)(eventTypeValue & 0x0F);
i += 1;
var parameter1 = trackData.ElementAt(i);
byte parameter2;
// One or two parameter type
switch (midiChannelEventType)
{
// One parameter types
case 0xC0:
midiEvent = new ProgramChangeEvent(deltaTime, midiChannel, parameter1);
lastMidiChannel = midiChannel;
break;
case 0xD0:
midiEvent = new ChannelAftertouchEvent(deltaTime, midiChannel, parameter1);
lastMidiChannel = midiChannel;
break;
// Two parameter types
case 0x80:
i += 1;
parameter2 = trackData.ElementAt(i);
midiEvent = new NoteOffEvent(deltaTime, midiChannel, parameter1, parameter2);
lastMidiChannel = midiChannel;
break;
case 0x90:
i += 1;
parameter2 = trackData.ElementAt(i);
midiEvent = new NoteOnEvent(deltaTime, midiChannel, parameter1, parameter2);
lastMidiChannel = midiChannel;
break;
case 0xA0:
i += 1;
parameter2 = trackData.ElementAt(i);
midiEvent = new NoteAftertouchEvent(deltaTime, midiChannel, parameter1, parameter2);
lastMidiChannel = midiChannel;
break;
case 0xB0:
i += 1;
parameter2 = trackData.ElementAt(i);
midiEvent = new ControllerEvent(deltaTime, midiChannel, parameter1, parameter2);
lastMidiChannel = midiChannel;
break;
case 0xE0:
i += 1;
parameter2 = trackData.ElementAt(i);
midiEvent = new PitchBendEvent(deltaTime, midiChannel, parameter1, parameter2);
lastMidiChannel = midiChannel;
break;
// Might be a Control Change Messages LSB
default:
midiEvent = new ControllerEvent(deltaTime, lastMidiChannel, eventTypeValue, parameter1);
break;
}
i += 1;
}
// Meta Events
else if (eventTypeValue == 0xFF)
{
i += 1;
var metaEventType = trackData.ElementAt(i);
i += 1;
var metaEventLength = trackData.ElementAt(i);
i += 1;
var metaEventData = Enumerable.Range(i, metaEventLength).Select(trackData.ElementAt).ToArray();
switch (metaEventType)
{
case 0x00:
midiEvent = new SequenceNumberEvent(BitConverter.ToUInt16(metaEventData.Reverse().ToArray(), 0));
break;
case 0x01:
midiEvent = new TextEvent(deltaTime, StringEncoder.GetString(metaEventData));
break;
case 0x02:
midiEvent = new CopyrightNoticeEvent(StringEncoder.GetString(metaEventData));
break;
case 0x03:
midiEvent = new SequenceOrTrackNameEvent(StringEncoder.GetString(metaEventData));
break;
case 0x04:
midiEvent = new InstrumentNameEvent(deltaTime, StringEncoder.GetString(metaEventData));
break;
case 0x05:
midiEvent = new LyricsEvent(deltaTime, StringEncoder.GetString(metaEventData));
break;
case 0x06:
midiEvent = new MarkerEvent(deltaTime, StringEncoder.GetString(metaEventData));
break;
case 0x07:
midiEvent = new CuePointEvent(deltaTime, StringEncoder.GetString(metaEventData));
break;
case 0x20:
midiEvent = new MIDIChannelPrefixEvent(deltaTime, metaEventData[0]);
break;
case 0x2F:
midiEvent = new EndOfTrackEvent(deltaTime);
break;
case 0x51:
var tempo =
(metaEventData[2] & 0x0F) +
((metaEventData[2] & 0xF0) * 16) +
((metaEventData[1] & 0x0F) * 256) +
((metaEventData[1] & 0xF0) * 4096) +
((metaEventData[0] & 0x0F) * 65536) +
((metaEventData[0] & 0xF0) * 1048576);
midiEvent = new SetTempoEvent(deltaTime, tempo);
break;
case 0x54:
midiEvent = new SMPTEOffsetEvent(deltaTime, metaEventData[0], metaEventData[1], metaEventData[2], metaEventData[3], metaEventData[4]);
break;
case 0x58:
midiEvent = new TimeSignatureEvent(deltaTime, metaEventData[0], metaEventData[1], metaEventData[2], metaEventData[3]);
break;
case 0x59:
midiEvent = new KeySignatureEvent(deltaTime, metaEventData[0], metaEventData[1]);
break;
case 0x7F:
midiEvent = new SequencerSpecificEvent(deltaTime, metaEventData);
break;
}
i += metaEventLength;
}
// System Exclusive Events
else if (eventTypeValue == 0xF0 || eventTypeValue == 0xF7)
{
var lengthTemp = new List <byte>();
do
{
i += 1;
lengthTemp.Add(trackData.ElementAt(i));
} while (trackData.ElementAt(i) > 0x7F);
var eventLength = VariableLengthUtil.decode_to_int(lengthTemp);
i += 1;
var eventData = Enumerable.Range(i, eventLength).Select(trackData.ElementAt);
midiEvent = new SysexEvent(deltaTime, eventTypeValue, eventData);
i += eventLength;
}
}
return(midiEvent != null
? new Tuple <Option <MidiEvent>, int, byte>(new Some <MidiEvent>(midiEvent), i - startIndex, lastMidiChannel)
: new Tuple <Option <MidiEvent>, int, byte>(new None <MidiEvent>(), i - startIndex, lastMidiChannel));
}
/// <summary>
///
/// </summary>
/// <param name="midiEvent"></param>
protected override void OnPitchBendEvent(PitchBendEvent midiEvent)
{
base.OnPitchBendEvent(midiEvent);
soundManager.ProcessPitchBend(midiEvent);
}
public PitchBendEventLabel(PitchBendEvent pitchBendEvent) : base(pitchBendEvent)
{
}
public void PitchBend_CreateDefault()
{
var pitchBendEvent = new PitchBendEvent();
Assert.AreEqual(PitchBendEvent.MinPitchValue, pitchBendEvent.PitchValue, "Pitch value is invalid.");
}
public void PitchBend_SetInvalidPitchValue()
{
var pitchBendEvent = new PitchBendEvent();
Assert.Throws <ArgumentOutOfRangeException>(() => pitchBendEvent.PitchValue = PitchBendEvent.MaxPitchValue + 1);
}
