/// <summary>Transposes a MIDI sequence up/down the specified number of half-steps.</summary>
/// <param name="sequence">The sequence to be transposed.</param>
/// <param name="steps">The number of steps up(+) or down(-) to transpose the sequence.</param>
/// <param name="includeDrums">Whether drum tracks should also be transposed.</param>
/// <remarks>If the step value is too large or too small, notes may wrap.</remarks>
public static void Transpose(MidiSequence sequence, int steps, bool includeDrums)
{
// If the sequence is null, throw an exception.
if (sequence == null)
{
throw new ArgumentNullException("sequence");
}
// Modify each track
foreach (MidiTrack track in sequence)
{
// Modify each event
foreach (MidiEvent ev in track.Events)
{
// If the event is not a voice MIDI event but the channel is the
// drum channel and the user has chosen not to include drums in the
// transposition (which makes sense), skip this event.
NoteVoiceMidiEvent nvme = ev as NoteVoiceMidiEvent;
if (nvme == null ||
(!includeDrums && nvme.Channel == (byte)SpecialChannels.Percussion))
{
continue;
}
// If the event is a NoteOn, NoteOff, or Aftertouch, shift the note
// according to the supplied number of steps.
nvme.Note = (byte)((nvme.Note + steps) % 128);
}
}
}
static MidiSequence CreateScaleSequence()
{
MidiSequence sequence = new MidiSequence();
MidiEventCollection events = sequence.Tracks.AddNewTrack().Events;
string[] notes = new[] { "C5", "D5", "E5", "F5", "G5", "A5", "B5", "C6", "C6", "B5", "A5", "G5", "F5", "E5", "D5", "C5" };
events.AddRange(notes.SelectMany(note => NoteVoiceMidiEvent.Complete(null, 100, 0, note, 127, 100)));
events.Add(new EndOfTrackMetaMidiEvent(null, notes.Length * 100));
return(sequence);
}
public void Process(NoteVoiceMidiEvent n)
{
switch (n)
{
case OnNoteVoiceMidiEvent on:
pressed.Add((on.Note));
break;
case OffNoteVoiceMidiEvent off:
pressed.Remove((off.Note));
break;
}
}
static void Main(string[] args)
{
double toneDistance = 1;
double beatDistance = 1;
double n;
List <string> lines = new List <string>();
lines.Add("INSERT PUNCHHOLE");
string path;
double note;
double ticks;
double time;
if (args.Length == 0)
{
Console.WriteLine("Usage: WintergatanLaserMIDI <filename.mid> [Tone Distance (mm)] [Beat Distance (mm)]");
Console.WriteLine("\tfilename.mid = MIDI file for which to generate code");
Console.WriteLine("\tTone Distance = Defines the distance between every note-pitch.");
Console.WriteLine("\tBeat Distance = Defines how far away the beats are from each other.");
Console.WriteLine();
return;
}
if (!File.Exists(args[0]))
{
Console.WriteLine("Error: file {0} not found", args[0]);
return;
}
path = System.IO.Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().GetName().CodeBase) + "\\" + args[0] + ".scr";
path = new Uri(path).LocalPath;
if (File.Exists(path))
{
File.Delete(path);
}
if (args.Length == 2 && !string.IsNullOrEmpty(args[1]))
{
if (double.TryParse(args[1], out n))
{
toneDistance = n;
}
else
{
Console.WriteLine("Tone Distance must be a number!");
return;
}
}
if (args.Length == 3 && !string.IsNullOrEmpty(args[2]))
{
if (double.TryParse(args[2], out n))
{
beatDistance = n;
}
else
{
Console.WriteLine("Beat Distance must be a number!");
return;
}
}
try
{
MidiSequence sequence = MidiSequence.Open(File.OpenRead(args[0]));
ticks = (double)sequence.Division;
foreach (MidiTrack track in sequence)
{
track.Events.ConvertDeltasToTotals();
foreach (MidiEvent ev in track.Events)
{
if (ev.GetType().ToString() == "MidiSharp.Events.Voice.Note.OnNoteVoiceMidiEvent")
{
NoteVoiceMidiEvent nvme = ev as NoteVoiceMidiEvent;
note = (double)nvme.Note;
time = (double)ev.DeltaTime;
Console.WriteLine(((time / ticks) * beatDistance) + "," + ((note - 60.0d) * toneDistance));
if (lines.Count >= 2)
{
lines.Add(" " + ((time / ticks) * beatDistance) + "," + ((note - 60.0d) * toneDistance) + ",0 1 1 0");
}
else
{
lines.Add(((time / ticks) * beatDistance) + "," + ((note - 60.0d) * toneDistance) + ",0 1 1 0");
}
}
}
}
System.IO.File.WriteAllLines(path, lines);
}
catch (Exception exc)
{
Console.Error.WriteLine("Error: {0}", exc.Message);
}
}
