/// <summary>
/// Creates a track chunk with the specified timed events.
/// </summary>
/// <param name="events">Collection of timed events to create a track chunk.</param>
/// <returns><see cref="TrackChunk"/> containing the specified timed events.</returns>
/// <exception cref="ArgumentNullException"><paramref name="events"/> is null.</exception>
public static TrackChunk ToTrackChunk(this IEnumerable <TimedEvent> events)
{
ThrowIfArgument.IsNull(nameof(events), events);
var trackChunk = new TrackChunk();
trackChunk.AddTimedEvents(events);
return(trackChunk);
}
private void btnSave_Click(object sender, EventArgs e)
{
if (Path.GetExtension(filePath) == ".mid")
{
var chunks = song.GetTrackChunks().ToArray();
var tempoMap = song.GetTempoMap();
var fixedMidi = new MidiFile();
var headerChunk = new TrackChunk();
int i = 0;
var t0Notes = chunks[0].GetNotes().ToArray();
if (t0Notes.Length == 0) // check if there are notes in Track0
{
i = 1;
var timedEvents = chunks[0].GetTimedEvents().ToArray();
var title = timedEvents.Where(t => t.Event.EventType == MidiEventType.SequenceTrackName);
if (title.Count() == 1)
{
headerChunk.AddTimedEvents(title);
}
}
fixedMidi.Chunks.Add(headerChunk);
fixedMidi.ReplaceTempoMap(tempoMap);
for (int ch = 0; i < chunks.Count(); i++, ch++)
{
var newChunk = new TrackChunk();
var timedEvents = chunks[i].GetTimedEvents();
using (var timedEventsManager = newChunk.ManageTimedEvents())
{
foreach (var timedEvent in timedEvents)
{
var eventType = timedEvent.Event.EventType;
if (eventType == MidiEventType.SequenceTrackName)
{
timedEventsManager.Events.Add(timedEvent);
}
else if (eventType == MidiEventType.ProgramChange)
{
var pcEvent = timedEvent.Event as ProgramChangeEvent;
pcEvent.Channel = (FourBitNumber)ch;
timedEventsManager.Events.AddEvent(pcEvent, timedEvent.Time);
}
}
}
using (var notesManager = newChunk.ManageNotes())
{
var notes = chunks[i].GetNotes().ToArray();
foreach (var n in notes)
{
var newNote = n;
newNote.Channel = (FourBitNumber)ch; // change channel of the notes in track
notesManager.Notes.Add(newNote);
}
}
fixedMidi.Chunks.Add(newChunk);
}
string outputFilename = Path.GetFileNameWithoutExtension(filePath) + "_fix.mid";
WriteMidiToFile(fixedMidi, outputFilename);
textBox1.AppendText("Wrote to file: " + outputFilename + Environment.NewLine);
}
else if (Path.GetExtension(filePath) == ".mml")
{
string outputFilename = Path.GetFileNameWithoutExtension(filePath) + "_fix.mml";
File.WriteAllText(outputFilename, sb.ToString());
textBox1.AppendText("Wrote to file: " + outputFilename + Environment.NewLine);
}
}