public IActionResult Index()
{
var rgVM = new RGViewModel
{
Instruments = new SelectList(RG.Instruments, "Item2", "Item1", RG.Instruments[(int)GeneralMidiInstrument.DistortionGuitar].ToString()),
Pitches = new SelectList(RG.Pitches, "Item2", "Item1"),
Durations = new SelectList(RG.Durations, "Item2", "Item1"),
Octaves = new SelectList(RG.Octaves, "Item2", "Item1"),
TimeSignatures = new SelectList(RG.TimeSignatures, "Item1", "Item1")
};
return(View(rgVM));
}
public async Task <IActionResult> Generate(RGViewModel vm)
{
// get file location for saving and reading
string directory = Path.Combine(_env.WebRootPath, "midi");
// check if directory exists if not create it
if (!Directory.Exists(directory))
{
Directory.CreateDirectory(directory);
}
// instantiate the riff generator
var rg = new RG(vm.TrackName, RG.Instruments[vm.SelectedInstrument].Item3, vm.Tempo, RG.TimeSignatures[vm.SelectedTimeSignature].Item3, vm.TotalNotes);
// generate the midi based on selected values
var midi = rg.Generate(vm.SelectedOctaves, vm.SelectedPitches, vm.SelectedDurations);
// get date for file parsing
var now = DateTime.Now;
var filePath = Path.Combine(directory, $"{vm.TrackName.Replace(" ", string.Empty)}_{Guid.NewGuid().ToString()}.mid");
// save to file
using (Stream file = System.IO.File.Create(filePath))
{
midi.Save(file);
}
// generate memory stream for download
var memory = new MemoryStream();
using (var stream = new FileStream(filePath, FileMode.Open))
{
await stream.CopyToAsync(memory);
}
memory.Position = 0;
return(File(memory, "application/x-midi", Path.GetFileName(filePath)));
}
