public void Process(MetaMessage message)
{
#region Require
if (message == null)
{
throw new ArgumentNullException("message");
}
#endregion
#region Guard
if (message.MetaType != MetaType.Tempo)
{
if (message.MetaType == MetaType.TimeSignature)
{
var ts = new TimeSignatureBuilder(message);
this.ClocksPerMetronomeClick = ts.ClocksPerMetronomeClick;
}
return;
}
#endregion
TempoChangeBuilder builder = new TempoChangeBuilder(message);
// Set the new tempo.
Tempo = builder.Tempo;
}
public static MetaMessage BuildMessage(int numerator = 4, int denominator = 4, int clocksPerMetronomeClick = 24, int thirtySecondNotesPerQuarterNote = 8)
{
var sb = new TimeSignatureBuilder();
sb.Numerator = (byte)numerator;
sb.Denominator = (byte)denominator;
sb.ClocksPerMetronomeClick = (byte)clocksPerMetronomeClick;
sb.ThirtySecondNotesPerQuarterNote = (byte)thirtySecondNotesPerQuarterNote;
sb.Build();
return sb.Result;
}
public GuitarTimeSignature(GuitarMessageList owner, MidiEvent ev)
: base(owner, ev, null, GuitarMessageType.GuitarTimeSignature)
{
if (ev == null)
{
SetDownTick(0);
}
else
{
SetDownEvent(ev);
var builder = new TimeSignatureBuilder((MetaMessage)ev.Clone());
Numerator = builder.Numerator;
Denominator = builder.Denominator;
ClocksPerMetronomeClick = builder.ClocksPerMetronomeClick;
ThirtySecondNotesPerQuarterNote = builder.ThirtySecondNotesPerQuarterNote;
}
}
private static IMidiMessage Convert(Event e, Track track)
{
if (e is NoteEvent)
{
NoteEvent note = (NoteEvent)e;
if (note.Type == NoteEvent.EventType.NoteOff)
{
ChannelMessageBuilder b = new ChannelMessageBuilder();
b.MidiChannel = note.Channel;
b.Command = ChannelCommand.NoteOff;
b.Data1 = ChannelNoteToMidiPitch(note.Pitch);
b.Data2 = ChannelVelocityToMidiVolume(note.Velocity);
b.Build();
return b.Result;
}
else
{
ChannelMessageBuilder b = new ChannelMessageBuilder();
b.MidiChannel = note.Channel;
b.Command = ChannelCommand.NoteOn;
b.Data1 = ChannelNoteToMidiPitch(note.Pitch);
b.Data2 = ChannelVelocityToMidiVolume(note.Velocity);
b.Build();
return b.Result;
}
}
else if (e is TempoEvent)
{
TempoEvent tempoEvent = (TempoEvent)e;
TempoChangeBuilder builder = new TempoChangeBuilder();
// convert BPM to microseconds
builder.Tempo = 60000000 / tempoEvent.TempoBpm;
builder.Build();
return builder.Result;
}
else if (e is TimeSignatureEvent)
{
TimeSignatureEvent timeSignatureEvent = (TimeSignatureEvent)e;
TimeSignatureBuilder builder = new TimeSignatureBuilder();
builder.Numerator = (byte)timeSignatureEvent.BeatsPerBar;
builder.Denominator = (byte)timeSignatureEvent.BeatValue;
builder.ClocksPerMetronomeClick = 24;
builder.ThirtySecondNotesPerQuarterNote = 8;
builder.Build();
return builder.Result;
}
else
{
Debug.Fail("unknown event type " + e.GetType().Name);
return null;
}
}
private void importMIDIToolStripMenuItem_Click(object sender, EventArgs e)
{
if (importDlg.ShowDialog(this)
== System.Windows.Forms.DialogResult.Cancel)
return;
List<PNote> notes = new List<PNote>();
PNote curNote = PNote.Default;
float tempo = 1;
float timeSig = 4f;
// first, we pull midi data
Sequence s = new Sequence(importDlg.FileName);
// quickly see if there's a piano track first
// and get the tempo as well
int piano = -1;
for (int it = 0; it < s.Count; it++)
{
Track t = s[it];
foreach (MidiEvent me in t.Iterator())
{
switch (me.MidiMessage.MessageType)
{
case MessageType.Channel:
{
ChannelMessage m = (ChannelMessage)me.MidiMessage;
if (m.Command == ChannelCommand.ProgramChange)
if ((GeneralMidiInstrument)m.Data1 == GeneralMidiInstrument.AcousticGrandPiano)
{
piano = it;
}
}
break;
case MessageType.Meta:
{
MetaMessage m = (MetaMessage)me.MidiMessage;
if (m.MetaType == MetaType.Tempo)
tempo = (new TempoChangeBuilder(m)).Tempo;
else if (m.MetaType == MetaType.TimeSignature)
timeSig = new TimeSignatureBuilder(m).Denominator;
}
break;
}
if (piano >= 0)
break;
}
if (piano >= 0)
break;
}
// didn't find one, so just try 0th track anyway
if (piano == -1)
piano = 0;
// now, pull all notes (and tempo)
// and make sure it's a channel that has content
for (int it = piano; it < s.Count; it++)
{
Track t = s[it];
int delta = 0;
foreach (MidiEvent me in t.Iterator())
{
delta += me.DeltaTicks;
switch (me.MidiMessage.MessageType)
{
case MessageType.Channel:
{
ChannelMessage m = (ChannelMessage)me.MidiMessage;
switch (m.Command)
{
case ChannelCommand.NoteOn:
if (curNote.Note != "")
{
curNote.Length = delta / 1000F;
delta = 0;
notes.Add(curNote);
}
curNote.Note = note2Piano(m.Data1);
break;
}
}
break;
case MessageType.Meta:
{
MetaMessage m = (MetaMessage)me.MidiMessage;
if (m.MetaType == MetaType.Tempo)
tempo = (new TempoChangeBuilder(m)).Tempo;
}
break;
}
}
// make sure we get last note
if (curNote.Note != "")
{
curNote.Length = delta / 1000F;
notes.Add(curNote);
}
// we found a track with content!
if (notes.Count > 0)
break;
}
// compress redundant accidentals/octaves
char[] notemods = new char[7];
int[] noteocts = new int[7];
for (int i = 0; i < 7; i++)
{
notemods[i] = 'n';
noteocts[i] = 3;
}
for (int i = 0; i < notes.Count; i++)
{
string noteStr = notes[i].Note;
int cur_note = noteStr[0] - 0x41;
char mod = noteStr[1];
int oct = int.Parse(noteStr.Substring(2));
noteStr = noteStr.Substring(0, 1);
if (mod != notemods[cur_note])
{
noteStr += new string(mod, 1);
notemods[cur_note] = mod;
}
if (oct != noteocts[cur_note])
{
noteStr += oct.ToString();
noteocts[cur_note] = oct;
}
notes[i] = new PNote(notes[i].Length, noteStr);
}
// now, we find what the "beat" length should be,
// by counting numbers of times for each length, and finding statistical mode
Dictionary<float, int> scores = new Dictionary<float, int>();
foreach (PNote n in notes)
{
if (n.Length != 0)
if (scores.Keys.Contains(n.Length))
scores[n.Length]++;
else
scores.Add(n.Length, 1);
}
float winner = 1;
int score = 0;
foreach (KeyValuePair<float, int> kv in scores)
{
if (kv.Value > score)
{
winner = kv.Key;
score = kv.Value;
}
}
// realign all of them to match beat length
for (int i = 0; i < notes.Count; i++)
{
notes[i] = new PNote(notes[i].Length / winner, notes[i].Note);
}
// compress chords down
for (int i = 0; i < notes.Count; i++)
{
if (notes[i].Length == 0 && i < notes.Count - 1)
{
notes[i + 1] = new PNote(notes[i + 1].Length, notes[i].Note + "-" + notes[i + 1].Note);
notes.RemoveAt(i);
i--;
}
}
// add in time
for (int i = 0; i < notes.Count; i++)
{
float len = notes[i].Length;
notes[i] = new PNote(len, notes[i].Note + (len != 1 ? "/" + (1 / len).ToString("0.##") : ""));
}
// what is the bpm, anyway?
int rpm = (int)(28800000 / tempo / winner); // 60 * 1,000,000 * .48 the .48 is because note lengths for some reason midi makes the beat note be .48 long
// now, output!
string line = "";
string output = "";
int lineCount = 1;
foreach (PNote n in notes)
{
if (line.Length + n.Note.Length + 1 > 51)
{
output += line.Substring(0, line.Length - 1) + "\r\n";
line = "";
if (lineCount == 50)
break;
lineCount++;
}
line += n.Note + ",";
}
if (line.Length > 0)
output += line.Substring(0, line.Length - 1);
OutputTxt.Text = "BPM: " + rpm.ToString() + "\r\n" + output;
OutputTxt.SelectAll();
}
public List<float> TicksPerQuarter(GeneralMidiInstrument inst, bool throwExceptionIfNotFound = false)
{
var messages = this.GetOrderedMessages(inst, throwExceptionIfNotFound);
var meta = messages
.Where(x => x.MidiMessage is MetaMessage)
.Select(x => x.MidiMessage as MetaMessage)
.Where(x => x.MetaType == MetaType.TimeSignature);
var time = new TimeSignatureBuilder();
return null;
}
public void Process(MetaMessage message)
{
#region Require
if (message == null)
{
throw new ArgumentNullException("message");
}
#endregion
#region Guard
if (message.MetaType != MetaType.Tempo)
{
if (message.MetaType == MetaType.TimeSignature)
{
var ts = new TimeSignatureBuilder(message);
this.ClocksPerMetronomeClick = ts.ClocksPerMetronomeClick;
}
return;
}
#endregion
TempoChangeBuilder builder = new TempoChangeBuilder(message);
// Set the new tempo.
Tempo = builder.Tempo;
}
static void Main(string[] args)
{
bool outputMidiVelocity = false;
//var filename = "01-v-drac.s3m";
//S3MFile f = S3MFile.Parse(filename);
//var tempo = 60000000 / (f.Header.InitialTempo);
//byte numerator = 4;
//byte denominator = 4;
//var speed = 3;
//var skip = 0;
var filename = "02-v-bewm.s3m";
S3MFile f = S3MFile.Parse(filename);
var tempo = 60000000 / (f.Header.InitialTempo);
byte numerator = 4;
byte denominator = 4;
var speed = 3;
var skip = 0;
outputMidiVelocity = true;
/*
var filename = "V-OPTION.S3M";
S3MFile f = S3MFile.Parse(filename);
var tempo = 60000000 / (f.Header.InitialTempo);
byte numerator = 6;
byte denominator = 8;
var speed = 3;
var skip = 4;
*/
/*
var filename = "V-FALCON.S3M";
S3MFile f = S3MFile.Parse(filename);
var tempo = 60000000 / (1 * f.Header.InitialTempo);
byte numerator = 4;
byte denominator = 4;
var speed = 3;
var skip = 0;
*/
/*
var filename = "V-CONTRA.IT";
S3MFile f = S3MFile.Parse(filename);
var tempo = 60000000 / (1 * f.Header.InitialTempo);
byte numerator = 4;
byte denominator = 4;
var speed = 3;
var skip = 0;
* */
/*
var filename = "V-BLAST.S3M";
S3MFile f = S3MFile.Parse(filename);
var tempo = 60000000 / (1 * f.Header.InitialTempo);
byte numerator = 4;
byte denominator = 4;
var speed = 3;
var skip = 0;*/
Sequence s = new Sequence();
Track t1 = new Track();
Track t2 = new Track();
Track t3 = new Track();
Track drums = new Track();
Track kick = new Track();
Track timeTrack = new Track();
s.Add(timeTrack);
s.Add(t1);
s.Add(t2);
s.Add(t3);
//s.Add(drums);
//s.Add(kick);
var drumPC = new ChannelMessageBuilder();
drumPC.MidiChannel = 09;
drumPC.Command = ChannelCommand.ProgramChange;
drumPC.Data1 = 0;// 79 + ce.Instrument;
drumPC.Build();
drums.Insert(0, drumPC.Result);
kick.Insert(0, drumPC.Result);
TimeSignatureBuilder tsb = new TimeSignatureBuilder();
tsb.Numerator = numerator;
tsb.Denominator = denominator;
tsb.ClocksPerMetronomeClick = 24;
tsb.ThirtySecondNotesPerQuarterNote = 8;
tsb.Build();
timeTrack.Insert(0, tsb.Result);
TempoChangeBuilder tcb = new TempoChangeBuilder();
tcb.Tempo = tempo;
tcb.Build();
timeTrack.Insert(0, tcb.Result);
var outputPatterns = new int[] { 5, 6, 7};
//var c1 = (from p in f.OrderedPatterns
// where patterns.Contains(p.PatternNumber)
// select p)
// .SelectMany(p => p.Channels)
// .Where(c => c.ChannelNumber == 1)
// .SelectMany(ce => ce.ChannelEvents);
//var c2 = (from p in f.OrderedPatterns
// where patterns.Contains(p.PatternNumber)
// select p)
// .SelectMany(p => p.Channels)
// .Where(c => c.ChannelNumber == 2)
// .SelectMany(ce => ce.ChannelEvents);
//var c3 = (from p in f.OrderedPatterns
// where patterns.Contains(p.PatternNumber)
// select p)
// .SelectMany(p => p.Channels)
// .Where(c => c.ChannelNumber == 3)
// .SelectMany(ce => ce.ChannelEvents);
var patterns = from p in f.OrderedPatterns.Skip(skip) /*where outputPatterns.Contains(p.PatternNumber) */select p;
//.SelectMany(p => p.Rows);
Dictionary<int, TrackInfo> tracks = new Dictionary<int, TrackInfo>();
tracks.Add(1, new TrackInfo(t1));
tracks[1].Channel = 0;
tracks.Add(2, new TrackInfo(t2));
tracks[2].Channel = 1;
tracks.Add(3, new TrackInfo(t3));
tracks[3].Channel = 2;
var di = new TrackInfo(drums);
di.Channel = 9;
var mapper = new Func<ChannelEvent, int>(ce =>
{
switch (ce.Instrument)
{
case 6:
return 42;
case 8:
return 35;
case 9:
return 38;
case 10:
return 47;
default:
Debug.Fail(ce.Instrument.ToString());
return 0;
}
});
di.NoteMapper = mapper;
var kickInfo = new TrackInfo(kick);
kickInfo.Channel = 9;
kickInfo.NoteMapper = mapper;
tracks.Add(4, di);
tracks.Add(5, kickInfo);
var tick = 0;
foreach (var pattern in patterns)
{
bool breakPattern = false;
foreach (var row in pattern.Rows)
{
//if ((row.RowNumber-1) % 16 == 0)
//{
// drums.Insert(tick, kickOn);
// drums.Insert(tick + speed, kickOff);
//}
foreach (var ce in row.ChannelEvents)
{
if (ce == null)
{
//Console.Out.WriteLine("skip");
continue;
}
if (ce.Command == 3)
{
var modulo = row.RowNumber % 32;
if (modulo != 0)
{
// sad to say, not sure why mod 8 but divide by 16 works
var m8 = row.RowNumber % 8;
if (m8 == 0)
{
var restore = tsb.Result;
tsb.Numerator = (byte)(row.RowNumber / 16);
tsb.Build();
var change = tsb.Result;
timeTrack.Insert(tick, change);
timeTrack.Insert(tick + 3, restore);
}
}
//Debugger.Break();
// pattern break
// figure out the time signature of the pattern up to this point
// then go back and insert a time signature change message at the beginning
// of the pattern
// and another one at the end to revert
//var restore = tsb.Result;
//tsb.Numerator = 2;
//tsb.Build();
//var change = tsb.Result;
//timeTrack.Insert(rowStartTick, change);
//timeTrack.Insert(tick + 3, restore);
breakPattern = true;
}
if (!tracks.ContainsKey(ce.ChannelNumber)) continue;
TrackInfo ti = tracks[ce.ChannelNumber];
if (ce.Note == -1 )
{
// skip
}
else if( ce.Note == 0xFF)
{
// re-use current note, but change instrument
//Console.Out.WriteLine("skip");
}
else if (ce.Note == 0xFE) //off
{
if (ti.LastPitch != -1)
{
NoteOff(tick, ti);
}
}
else
{
//if (ce.Volume != -1 && ce.Volume < 32) continue;
if (ti.LastPitch != -1)
{
NoteOff(tick, ti);
}
//p = ProgramChange(ti.Track, tick, p, ce);
var delay = 0;
if (ce.Command == 19)
{
if (208 <= ce.Data && ce.Data <= 214) // HACK: 214 is a guess at the top range of SD commands
{
delay = ce.Data - 208;
Debug.Assert(delay >= 0);
}
}
NoteOn(tick + delay, ti, ce);
}
}
tick += speed;
if (breakPattern)
{
break;
}
}
}
foreach (var pair in tracks)
{
if (pair.Value.LastPitch != -1)
{
NoteOff(tick, pair.Value);
}
}
foreach (MidiEvent m in drums.Iterator().Take(5))
{
if (m.MidiMessage is ChannelMessage)
{
ChannelMessage cm = (ChannelMessage)m.MidiMessage;
Console.Out.WriteLine("{0} {1}", m.AbsoluteTicks, cm.Command);
}
}
s.Save(Path.ChangeExtension(filename, ".mid"));
/*
var tick = 0;
var speed = 3;
var lastNote = -1;
var p = -1;
foreach (var ce in c1)
{
if (ce == null || ce.Note == -1 || ce.Note == 0xFF)
{
tick += speed;
Console.Out.WriteLine("skip");
continue;
}
else if (ce.Note == 0xFE) //off
{
lastNote = NoteOff(t, tick, lastNote);
}
else
{
if (lastNote != -1)
{
lastNote = NoteOff(t, tick, lastNote);
}
p = ProgramChange(t, tick, p, ce);
var delay = 0;
if (ce.Command == 19)
{
if (208 <= ce.Data && ce.Data <= 214) // HACK: 214 is a guess at the top range of SD commands
{
delay = ce.Data - 208;
Debug.Assert(delay >= 0);
}
}
lastNote = NoteOn(t, tick + delay, ce.Note);
}
tick += speed;
}
lastNote = NoteOff(t, tick, lastNote);
*
* */
}
