private void CreateMidi(string trackName, int[] notes, int tempo, int[] instruments, int[] durations, string fileName)
{
MIDISong song = new MIDISong();
song.AddTrack(trackName);
song.SetTimeSignature(0, 4, 4);
song.SetTempo(0, m_nBeats[tempo]);
for (int channel = 0; channel < instruments.Length; channel++)
{
song.SetChannelInstrument(0, channel, instruments[channel]);
foreach (int duration in durations)
{
for (int i = 0; i < notes.Length; i++)
{
int noteNumber = notes[i];
noteNumber += 12 * (6 + (channel % 2));
song.AddNote(0, channel, noteNumber, duration);
}
}
}
try
{
MemoryStream ms = new MemoryStream();
song.Save(ms);
ms.Seek(0, SeekOrigin.Begin);
byte[] src = ms.GetBuffer();
byte[] dst = new byte[src.Length];
for (int i = 0; i < src.Length; i++)
{
dst[i] = src[i];
}
ms.Close();
FileInfo FI = new FileInfo(fileName + ".mid");
if (!FI.Directory.Exists)
{
FI.Directory.Create();
}
FileStream objWriter = File.Create(FI.FullName);
objWriter.Write(dst, 0, dst.Length);
objWriter.Close();
objWriter.Dispose();
objWriter = null;
}
catch (Exception e)
{
throw e;
}
}
// Ecriture musique dans fichier temporaire
private void WriteMusic(Individu individu, int numeroPiste)
{
// 1) Créer le fichier MIDI
// a. Créer un fichier et une piste audio ainsi que les informations de tempo
MIDISong song = new MIDISong();
song.AddTrack("Piste1");
song.SetTimeSignature(0, 4, 4);
song.SetTempo(0, tempo);
// Récupération du tableau contenant les notes de musique
int[] tabMusique = individu.GetNotesDeMusique();
// Récupération du type d'instrument dans l'individu présent dans la population
int instrument = individu.GetTypeInstrument();
song.SetChannelInstrument(0, 0, instrument);
// Ajout des notes une à une dans la piste son
for (int i = 0; i < numberIndividu; i++)
{
song.AddNote(0, 0, tabMusique[i], lengthNote);
}
// d. Enregistrer le fichier .mid (lisible dans un lecteur externe par exemple)
// on prépare le flux de sortie
MemoryStream ms = new MemoryStream();
song.Save(ms);
ms.Seek(0, SeekOrigin.Begin);
byte[] src = ms.GetBuffer();
ms.Close();
FileStream objWriter = File.Create(directory + "/piste" + numeroPiste + ".midi");
objWriter.Write(src, 0, src.Length);
objWriter.Close();
objWriter.Dispose();
objWriter = null;
}
public MIDISong ToMidi(Dictionary <string, int> instrumentMap, int songId = 0)
{
var inst = Instruments;
var ovtb = Voices;
var stbl = Songs[songId];
var notb = Notes;
var song = new MIDISong();
for (int i = 0; i < 4; i++)
{
var track = song.AddTrack(null);
song.SetTempo(track, 3000 / stbl.SongSpeed);
song.SetTimeSignature(track, 4, 4);
}
for (int i = 0; i < inst.Length; i++)
{
var instr = inst[i];
int minst;
if (!instrumentMap.TryGetValue(instr.Name, out minst))
{
Console.WriteLine("Unknown instrument " + instr.Name);
}
else
{
Console.WriteLine(minst + " set for " + instr.Name);
}
if (i < 15 && i != 9)
{
for (int j = 0; j < 4; j++)
{
if (minst != -1)
{
song.SetChannelInstrument(j, i, minst);
}
}
}
}
int lastinstr = Int32.MinValue;
for (int i = stbl.StartPos; i <= stbl.StopPos; i++)
{
for (int j = 0; j < 4; j++)
{
var voice = ovtb[i * 4 + j];
for (int k = 0; k < stbl.PatternLength; k++)
{
var note = notb[voice.NoteAddress + k];
if (note.Command == 15)
{
for (int l = 0; l < 4; l++)
{
song.SetTempo(l, 3000 / note.CommandInfo);
}
}
int instr = note.Instrument - 1;
if (instr >= 0)
{
if (instr == 9 || instr >= 15)
{
if (lastinstr != instr)
{
int minst;
instrumentMap.TryGetValue(inst[instr].Name, out minst);
song.SetChannelInstrument(j, 15, minst);
lastinstr = instr;
}
song.AddNote(j, 15, note.Value - 1, 12);
}
else
{
song.AddNote(j, instr, note.Value - 1, 12);
}
}
else
{
song.AddNote(j, 0, -1, 12);
}
}
}
}
return(song);
}
