public void OpenMidiFile(string fileName)
{
if (!File.Exists(fileName))
{
Form1_Resize(null, null);
return;
}
//NAudio.Midi.MidiFile midiFile = new MidiFile(@"D:\Libraries\Musics\Midi\beethoven-pour-elise.mid");
//flourish
//town
MidiFile midiFile = new MidiFile(fileName);
string part = String.Empty;
TimeSignatureEvent lastTimeSignature = null;// new TimeSignatureEvent(4,4,24,32,
List<NoteEvent> listNote = new List<NoteEvent>();
Dictionary<float, string> dicNoteType = new Dictionary<float, string>();
//dicNoteType.Add(1.75f * 4f, "Ronde double pointée");
//dicNoteType.Add(1.5f * 4f, "Ronde pointée");
dicNoteType.Add(4f, "Ronde");
dicNoteType.Add(1.75f * 2f, "Blanche double pointée");
dicNoteType.Add(1.5f * 2f, "Blanche pointée");
dicNoteType.Add(2f, "Blanche");
dicNoteType.Add(1.75f * 1f, "Noire double pointée");
dicNoteType.Add(1.5f * 1f, "Noire pointée");
dicNoteType.Add(1f, "Noire");
dicNoteType.Add(1.75f * 0.5f, "Croche double pointée");
dicNoteType.Add(1.5f * 0.5f, "Croche pointée");
dicNoteType.Add(0.5f, "Croche");
dicNoteType.Add(1.75f * 0.25f, "Double croche double pointée");
dicNoteType.Add(1.5f * 0.25f, "Double croche pointée");
dicNoteType.Add(0.25f, "Double croche");
dicNoteType.Add(1.75f * 0.125f, "Triple croche double pointée");
dicNoteType.Add(1.5f * 0.125f, "Triple croche pointée");
dicNoteType.Add(0.125f, "Triple croche");
dicNoteType.Add(1.75f * 0.0625f, "Quadruple croche double pointée");
dicNoteType.Add(1.5f * 0.0625f, "Quadruple croche pointée");
dicNoteType.Add(0.0625f, "Quadruple croche");
music = new Music();
music.ListChanel = new List<Channel>();
Measure curMeasure = null;
bool hasNote = false;
StringBuilder partition = new StringBuilder();
if (midiFile != null)
{
part += String.Format(" [ DeltaTicksPerQuarterNote : {0} ] ", midiFile.DeltaTicksPerQuarterNote);
for (int i = 0; i < midiFile.Tracks; i++)
{
Channel currentChannel = null;
currentChannel = new Channel();
hasNote = false;
partition.AppendLine();
foreach (MidiEvent midiEvent in midiFile.Events[i])
{
NoteOnEvent noteEvent = midiEvent as NoteOnEvent;
partition.AppendLine();
if (midiEvent is TimeSignatureEvent)
{
lastTimeSignature = midiEvent as TimeSignatureEvent;
//part += String.Format(" [ {0} ] ", midiEvent.ToString());
partition.AppendLine(String.Format(" [ {0} ] ", midiEvent.ToString()));
}
else if (noteEvent != null && noteEvent.CommandCode == MidiCommandCode.NoteOn && noteEvent.Velocity > 0)
{
int noteLength = 1;
noteLength = noteEvent.NoteLength;
partition.AppendLine(String.Format(" [ AbsoluteTime {0} # DeltaTime {1} # NoteName {2} # NoteNumber {3} # NoteLength {4} # Channel {5}] ", noteEvent.AbsoluteTime, noteEvent.DeltaTime, noteEvent.NoteName, noteEvent.NoteNumber, noteLength, noteEvent.Channel));
float typeNote = (float)noteLength / (float)midiFile.DeltaTicksPerQuarterNote;
string typeNoteString = String.Empty;
if (dicNoteType.ContainsKey(typeNote))
typeNoteString = dicNoteType[typeNote];
partition.AppendLine(String.Format(" OFF :: {0} :: {1}", typeNote, typeNoteString));
listNote.Add(noteEvent);
float measureLenght = (float)lastTimeSignature.Numerator * 4f / (float)lastTimeSignature.No32ndNotesInQuarterNote * (float)midiFile.DeltaTicksPerQuarterNote;
Note newNote = new Note();
newNote.NoteLength = noteEvent.NoteLength;
newNote.NoteName = noteEvent.NoteName;
newNote.NoteNumber = noteEvent.NoteNumber;
newNote.AbsoluteTime = noteEvent.AbsoluteTime;
curMeasure = currentChannel.FindMeasure(noteEvent.AbsoluteTime);
if (curMeasure == null)
{
int nbPrevMeasure = (int)(noteEvent.AbsoluteTime / measureLenght);
curMeasure = new Measure(nbPrevMeasure * measureLenght, measureLenght);
currentChannel.AddMeasure(curMeasure);
}
curMeasure.AddNote(newNote);
hasNote = true;
}
else
{
partition.AppendLine(String.Format(" [ {0} ] ", midiEvent.ToString()));
}
}
if (hasNote)
{
music.AddChannel(currentChannel);
}
}
}
Form1_Resize(null, null);
}