sf2xrni.cs

// It doesn't generate useful file.
using System;
using System.Collections.Generic;
using System.IO;
using System.Text;
using NRenoiseTools;
using NAudio.SoundFont;
using NAudio.Wave;

using SInstrument = NAudio.SoundFont.Instrument;
using XInstrument = NRenoiseTools.Instrument;
using SSampleHeader = NAudio.SoundFont.SampleHeader;
using XSample = NRenoiseTools.Sample;

namespace Commons.Music.Sf2Xrni
{
	public class Driver
	{
		public static void Main (string [] args)
		{
			var sf2xrni = new Sf2Xrni ();
			foreach (var file in args)
				sf2xrni.Convert (file, Path.ChangeExtension (file, ".xrni"));
		}
	}
	
	public class Sf2Xrni
	{
		public void Convert (string soundFontFile, string xrniFile)
		{
			var sf2 = new SoundFont (soundFontFile);
			var xrni = new XInstrument ();

			// do conversion
			var samples = new List<XSample> ();
			foreach (var sh in sf2.SampleHeaders)
				samples.Add (ConvertSample (sh, sf2.SampleData));
			xrni.Name = sf2.FileInfo.BankName;
			xrni.Samples = samples.ToArray ();
			xrni.Save (xrniFile);
		}

		XSample ConvertSample (SSampleHeader sh, byte [] sample)
		{
			var xs = new XSample ();
			xs.LoopStart = sh.StartLoop - sh.Start;
			xs.LoopEnd = sh.EndLoop - sh.End;
			xs.Name = sh.SampleName;
			xs.FileName = xs.Name + ".wav";
			var ms = new MemoryStream ();
			var wfw = new WaveFileWriter (ms, new WaveFormat ());
			wfw.WriteData (sample, (int) sh.Start, (int) (sh.End - sh.Start));
			wfw.Close ();
			xs.Buffer = ms.ToArray ();

			return xs;
		}
	}
}