private static void set_measures(Sequence sequence, D_Staff staff)
{
// This function requires staff.num_of_beats to be set!
// TimeSignature messages are in channel 0
List <Tuple <MidiEvent, MetaMessage> > meta_messages = getMetaMessages(sequence[0]);
foreach (Tuple <MidiEvent, MetaMessage> metaPair in meta_messages)
{
MidiEvent midiEvent = metaPair.Item1;
MetaMessage metaMessage = metaPair.Item2;
byte[] meta_bytes = metaMessage.GetBytes();
// Time signature
if (metaMessage.MetaType == MetaType.TimeSignature)
{
int top_number = meta_bytes[0];
int bottom_number = (int)(Math.Pow(2, meta_bytes[1]));
int start_beat = midiEvent.AbsoluteTicks / sequence.Division;
staff.addMeasure(top_number, bottom_number, start_beat);
}
}
staff.setMeasureEndTimes();
}
public void Process(MetaMessage message)
{
#region Require
if (message == null)
{
throw new ArgumentNullException("message");
}
#endregion
#region Guard
if (message.MetaType != MetaType.Tempo)
{
return;
}
#endregion
TempoChangeBuilder builder = new TempoChangeBuilder(message);
// Set the new tempo.
Tempo = builder.Tempo;
Tempo = Tempo;
}
private async Task <string> GetWsdlFromMetaBodyWriter <T>(SoapSerializer serializer)
{
var service = new ServiceDescription(typeof(T));
var baseUrl = "http://tempuri.org/";
var xmlNamespaceManager = Namespaces.CreateDefaultXmlNamespaceManager();
var bodyWriter = serializer == SoapSerializer.DataContractSerializer
? new MetaWCFBodyWriter(service, baseUrl, null) as BodyWriter
: new MetaBodyWriter(service, baseUrl, null, xmlNamespaceManager) as BodyWriter;
var encoder = new SoapMessageEncoder(MessageVersion.Soap12WSAddressingAugust2004, System.Text.Encoding.UTF8, XmlDictionaryReaderQuotas.Max, false, true);
var responseMessage = Message.CreateMessage(encoder.MessageVersion, null, bodyWriter);
responseMessage = new MetaMessage(responseMessage, service, null, xmlNamespaceManager);
using (var memoryStream = new MemoryStream())
{
await encoder.WriteMessageAsync(responseMessage, memoryStream);
memoryStream.Position = 0;
using (var streamReader = new StreamReader(memoryStream))
{
var result = streamReader.ReadToEnd();
return(result);
}
}
}
private void KeySigParsed(MetaMessage meta)
{
byte scale = (byte)(meta.GetBytes()[1] == 0 ? ScaleType.Major : ScaleType.Minor);
OnKeySignatureParsed(KeyProviderFactory.GetKeyProvider().ConvertAccidentalCountToKeyRootPositionInOctave(
meta.GetBytes()[0], scale), scale);
}
private void SetTimeSignature(MetaMessage metaMessage, StringBuilder lilypondContent)
{
byte[] timeSignatureBytes = metaMessage.GetBytes();
_beatNote = timeSignatureBytes[0];
_beatsPerBar = (int)(1 / Math.Pow(timeSignatureBytes[1], -2));
lilypondContent.AppendLine($"\\time {_beatNote}/{_beatsPerBar}");
}
public void TestTimeSignature()
{
int numerator = 4;
int denominator = 4;
byte ticksPerBeat = 24;
byte thirtySecondNotesPerBeat = 8;
TimeSignatureMetaMessage message = new TimeSignatureMetaMessage(
numerator,
denominator,
ticksPerBeat,
thirtySecondNotesPerBeat,
0
);
int subdivision = (int)(Math.Log(denominator) / Math.Log(2));
MetaMessage bytes = message.MetaMessage;
MetaMessage expected = new MetaMessage
{
MetaType = 0x58,
Data = new byte[] { (byte)numerator, (byte)subdivision,
ticksPerBeat, thirtySecondNotesPerBeat },
TimeDelta = 0
};
Assert.Equal(expected, bytes);
}
private static void WriteMetaMessage(string receiver, string sender, MetaMessage message)
{
Console.Write("META MESSAGE: ");
switch (message.State)
{
case MetaState.Added:
Console.WriteLine($"Added {message.ChatMember}");
break;
case MetaState.Removed:
Console.WriteLine($"Removed {message.ChatMember}");
break;
case MetaState.Online:
Console.WriteLine($"{message.ChatMember} is online");
break;
case MetaState.Offline:
Console.WriteLine($"{message.ChatMember} is offline");
break;
default:
throw new ArgumentOutOfRangeException();
}
}
public void TestKeySignature()
{
// D major
sbyte sharpsFlats = 2;
byte majorMinor = 0;
KeySignature keySignatureExpected =
new KeySignature(Tonic.D, Scale.MAJOR);
KeySignatureMetaMessage message1 = new KeySignatureMetaMessage(
keySignatureExpected, 0);
KeySignatureMetaMessage message2 = new KeySignatureMetaMessage(
sharpsFlats, majorMinor, 0);
Assert.True(message2.KeySignature.Equals(keySignatureExpected));
MetaMessage bytes1 = message1.MetaMessage;
MetaMessage bytes2 = message2.MetaMessage;
MetaMessage expected = new MetaMessage
{
MetaType = 0x59,
Data = new byte[] { (byte)sharpsFlats, majorMinor },
TimeDelta = 0
};
Assert.Equal(expected, bytes1);
Assert.Equal(expected, bytes2);
}
private void ProcessTempo(MetaMessage message)
{
var b = message.GetBytes();
var tempoBytes = new[] { b[2], b[1], b[0], (byte)0x00 };
this._tempo = 60000000.0 / BitConverter.ToInt32(tempoBytes, 0);
}
/// <summary>
/// Builds the tempo change MetaMessage.
/// </summary>
public void Build()
{
// If the tempo has been changed since the last time the message
// was built.
if(changed)
{
byte[] data = new byte[MetaMessage.TempoLength];
// If this platform uses little endian byte order.
if(BitConverter.IsLittleEndian)
{
int d = data.Length - 1;
// Unpack tempo.
for(int i = 0; i < data.Length; i++)
{
data[d] = (byte)(tempo >> (Shift * i));
d--;
}
}
// Else this platform uses big endian byte order.
else
{
// Unpack tempo.
for(int i = 0; i < data.Length; i++)
{
data[i] = (byte)(tempo >> (Shift * i));
}
}
changed = false;
result = new MetaMessage(MetaType.Tempo, data);
}
}
private static string GetMetaString(MetaMessage metaMessage)
{
byte[] bytes = metaMessage.GetBytes();
switch (metaMessage.MetaType)
{
case MetaType.Tempo:
// Bitshifting is nodig om het tempo in BPM te be
int tempo = (bytes[0] & 0xff) << 16 | (bytes[1] & 0xff) << 8 | (bytes[2] & 0xff);
int bpm = 60000000 / tempo;
return(metaMessage.MetaType + ": " + bpm);
//case MetaType.SmpteOffset:
// break;
case MetaType.TimeSignature: //kwart = 1 / 0.25 = 4
return(metaMessage.MetaType + ": (" + bytes[0] + " / " + 1 / Math.Pow(bytes[1], -2) + ") ");
//case MetaType.KeySignature:
// break;
//case MetaType.ProprietaryEvent:
// break;
case MetaType.TrackName:
return(metaMessage.MetaType + ": " + Encoding.Default.GetString(metaMessage.GetBytes()));
default:
return(metaMessage.MetaType + ": " + Encoding.Default.GetString(metaMessage.GetBytes()));
}
}
private void ParseMetaMessage(MetaMessage message, MidiEvent @event)
{
switch (message.MetaType)
{
case MetaType.Lyric:
OnLyricParsed(Encoding.ASCII.GetString(message.GetBytes()));
HandledMidiEvent?.Invoke(this, new MidiEventArgs(@event));
break;
case MetaType.Marker:
OnMarkerParsed(Encoding.ASCII.GetString(message.GetBytes()));
HandledMidiEvent?.Invoke(this, new MidiEventArgs(@event));
break;
case MetaType.Tempo:
WhenTempoChanged(message);
HandledMidiEvent?.Invoke(this, new MidiEventArgs(@event));
break;
case MetaType.TimeSignature:
OnTimeSignatureParsed(message.GetBytes()[0], message.GetBytes()[1]);
HandledMidiEvent?.Invoke(this, new MidiEventArgs(@event));
break;
case MetaType.KeySignature:
KeySigParsed(message);
HandledMidiEvent?.Invoke(this, new MidiEventArgs(@event));
break;
default:
UnhandledMidiEvent?.Invoke(this, new MidiEventArgs(@event));
break;
}
}
private void ProcessTempoMessage(MidiEvent evt, MetaMessage msg)
{
var msgBytes = msg.GetBytes();
int microSecondsPB = (msgBytes[0] << 16 | msgBytes[1] << 8 | msgBytes[2]);
int BPM = 60_000_000 / microSecondsPB;
composition.Tokens.Add(new TempoBuilder().WithBPM(BPM).Build());
}
private void SetTempo(MetaMessage metaMessage, StringBuilder lilypondContent)
{
byte[] tempoBytes = metaMessage.GetBytes();
int tempo = (tempoBytes[0] & 0xff) << 16 | (tempoBytes[1] & 0xff) << 8 | (tempoBytes[2] & 0xff);
_bpm = 60000000 / tempo;
lilypondContent.AppendLine($"\\tempo 4={_bpm}");
}
/// <summary>
/// Test if the message data can be edited in the track editor
/// </summary>
/// <param name="mess">the message to test</param>
/// <returns><code>true</code> if the message data can be edited</returns>
public static bool IsEditable(this MetaMessage mess)
{
int type = mess.GetMetaMessageType();
return((type >= 1 && type <= 9) || // MetaEvent between TextEvent (0x01) and DeviceName (0x09), see MidiHelper.MetaEventType
type == (int)MidiHelper.MetaEventType.Tempo ||
type == (int)MidiHelper.MetaEventType.KeySignature);
}
private void WhenTempoChanged(MetaMessage meta)
{
int newTempoMSPQ = (meta.GetBytes()[2] & 0xFF) |
((meta.GetBytes()[1] & 0xFF) << 8) |
((meta.GetBytes()[0] & 0xFF) << 16);
this.tempoBPM = newTempoMSPQ = 60000000 / newTempoMSPQ;
OnTempoChanged(tempoBPM);
}
private async void OnSendNormalMessagePressed(object sender, EventArgs e)
{
string recipientUuid = RecipientUuid.Text;
string messageText = Message.Text;
MetaMessage textMessage = MessageUtils.ComposeNormalTextMessage(recipientUuid, messageText);
await _connection.SendMessageAsync(textMessage);
}
//private void HandleMarker()
//{
// MetaMessage metaMessage = _midiEvent.MidiMessage as MetaMessage;
// byte[] markerBytes = metaMessage.GetBytes();
// string markerText = System.Text.Encoding.UTF8.GetString(markerBytes);
// Marker marker = (Marker)Enum.Parse(typeof(Marker), markerText);
// this._midiStrategy.HandleMarker(_midiEvent.AbsoluteTicks, marker);
//}
private void HandleMarker()
{
MetaMessage metaMessage = _midiEvent.MidiMessage as MetaMessage;
byte[] markersBytes = metaMessage.GetBytes();
List <Tuple <Marker, int> > markers = Deserialize(markersBytes);
this._midiStrategy.HandleMarker(_midiEvent.AbsoluteTicks, markers);
}
public void handleMessage(MetaMessage metaMessage, MidiInterpreter midi, Score score)
{
byte[] timeSignatureBytes = metaMessage.GetBytes();
var timeSignature = new TimeSignature(timeSignatureBytes[0], (Length)(int)Math.Pow(2, timeSignatureBytes[1]));
midi.beatsPerMessage = timeSignature.beatsPerMeasure;
midi.timeSignatureLengthNote = timeSignature.lengthOfOneBeat;
score.staffsInScore.Last().bars.Last().notes.Add(timeSignature);
}
private void Write(MetaMessage message)
{
trackData.Add((byte)message.Status);
trackData.Add((byte)message.MetaType);
WriteVariableLengthValue(message.Length);
trackData.AddRange(message.GetBytes());
}
public void handleMessage(MetaMessage metaMessage, MidiInterpreter midi, Score score)
{
byte[] tempoBytes = metaMessage.GetBytes();
int tempo = (tempoBytes[0] & 0xff) << 16 | (tempoBytes[1] & 0xff) << 8 | (tempoBytes[2] & 0xff);
var bpm = 60000000 / tempo;
var metronome = new Metronome(Length.Quarter, bpm);
score.staffsInScore.Last().bars.Last().notes.Add(metronome);
}
/// <summary>
/// Create a Midi Meta event
/// </summary>
/// <param name="type">the type of the event as an int</param>
/// <param name="data">a String that represents the data for the event.</param>
/// <see cref="SetMetaData"/> for details.
/// <param name="tick">the position of the event in the sequence</param>
/// <param name="ticksPerBeat">the tick resolution of the sequence</param>
/// <returns>the created Midi Meta event</returns>
public static MidiEvent CreateMetaEvent(int type, string data, long tick, int ticksPerBeat)
{
var mm = new MetaMessage();
mm.SetMessage(type, null, 0);
SetMetaData(mm, data, ticksPerBeat);
var ev = new MidiEvent(mm, tick);
return(ev);
}
private string getTimeSignatureString(MetaMessage metaMessage, ref StringBuilder lilyString)
{
byte[] timeSignatureBytes = metaMessage.GetBytes();
_beatNote = timeSignatureBytes[0];
_beatsPerBar = (int)(1 / Math.Pow(timeSignatureBytes[1], -2));
string returnString = $"\\time {_beatNote}/{_beatsPerBar}";
lilyString.AppendLine(returnString);
return(returnString);
}
/// <summary>
/// Builds the time signature MetaMessage.
/// </summary>
public void Build()
{
// If any of the properties have changed since the last time the
// message was built.
if (changed)
{
result = new MetaMessage(MetaType.TimeSignature, data);
changed = false;
}
}
public void ProcessToken(TimeSignature timeSignature)
{
byte[] messageData = new byte[4];
messageData[0] = Convert.ToByte(timeSignature.Count);
messageData[1] = Convert.ToByte(Math.Log(timeSignature.Denominator.Value, 2));
var metaMessage = new MetaMessage(MetaType.TimeSignature, messageData);
metaTrack.Insert(currentAbsoluteTicks, metaMessage);
currentTimeSignature = timeSignature;
}
public override string GetFormattedLength()
{
Dictionary <int, int> tempoEvents = new Dictionary <int, int>(); // Ordered by: AbsoluteTicks, Tempo
int id = 0;
foreach (var t in sequence.Tracks)
{
foreach (var something in t.Iterator())
{
if (something.MidiMessage.MessageType == MessageType.Meta)
{
MetaMessage meta = (MetaMessage)something.MidiMessage;
if (meta.MetaType == MetaType.Tempo)
{
// I think, something.AbsoluteTicks is useful
// As for getting the actual Tempo out of it...
var bytes = meta.GetBytes();
// Apparently it's... backwards?
byte[] tempoBytes = new byte[4];
tempoBytes[2] = bytes[0];
tempoBytes[1] = bytes[1];
tempoBytes[0] = bytes[2];
int tempo = BitConverter.ToInt32(tempoBytes, 0);
// This seems legit
tempoEvents[something.AbsoluteTicks] = tempo;
}
}
}
}
TimeSpan time = TimeSpan.Zero;
int lastTempo = sequence.FirstTempo;
int lastTime = 0;
foreach (var kvp in tempoEvents)
{
time += TimeSpan.FromSeconds((((double)(kvp.Key - lastTime) / sequence.Division) * lastTempo / 1000000d));
lastTempo = kvp.Value;
lastTime = kvp.Key;
}
lastLength = sequence.GetLength();
// And then get the rest to the end
if (time != TimeSpan.Zero)
{
time += TimeSpan.FromSeconds((((double)(lastLength - lastTime) / sequence.Division) * lastTempo / 1000000d));
}
//time = TimeSpan.FromSeconds((int)((sequence.GetLength() / sequence.Division) * this.sequence.FirstTempo / 1000000f));
if (time == TimeSpan.Zero)
{
time = TimeSpan.FromSeconds((((double)lastLength / sequence.Division) * this.sequence.FirstTempo / 1000000d)); // Old method
}
lastDuration = time;
return(time.ToString(@"mm\:ss"));
}
private async void OnSendInitialMessagePressed(object sender, EventArgs e)
{
string recipientUuid = RecipientUuid.Text;
string messageText = Message.Text;
ChatPackage chatPackage = await _connection.GetChatPackage(recipientUuid);
MetaMessage initialMessage = MessageUtils.ComposeInitialMessage(recipientUuid, chatPackage, messageText);
await _connection.SendMessageAsync(initialMessage);
}
public void Convert(MidiEvent midiEvent, ref Models.Track track)
{
MetaMessage metaMessage = midiEvent.MidiMessage as MetaMessage;
MetaType metaType = metaMessage.MetaType;
if (converters.ContainsKey(metaType))
{
var converter = converters[metaType];
converter.Convert(midiEvent, ref track);
}
}
public void HandleMetaData(MidiEvent midiEvent)
{
_midiEvent = midiEvent;
MetaMessage metaMessage = midiEvent.MidiMessage as MetaMessage;
if (MetaTypesDictionary.TryGetValue(metaMessage.MetaType, out var action))
{
action();
}
}
private string getTempoString(MetaMessage metaMessage, ref StringBuilder lilyString)
{
byte[] tempoBytes = metaMessage.GetBytes();
int tempo = (tempoBytes[0] & 0xff) << 16 | (tempoBytes[1] & 0xff) << 8 | (tempoBytes[2] & 0xff);
_bpm = 60000000 / tempo;
string returnString = $"\\tempo 4={_bpm}";
lilyString.AppendLine(returnString);
return(returnString);
}
