Nanook.TheGhost.ProjectSong.adjustFrets C# (CSharp) Method

        private int[] adjustFrets(int[] frets)
        {
            int fretPadding = 0;
            List<int> f = new List<int>(frets);

            //remove frets < first note (sometimes there's a padding note at 0 which is not accurate)
            while (f[0] < this.Notes.MinNoteOffsetSynced + _startPaddingMs)
                f.RemoveAt(0);

            //add frets from 0 to start of frets
            int fretLen = 0; //first fret length
            if (f.Count > 1 && f[1] - f[0] < f[0])
            {
                fretLen = f[1] - f[0];
                int x = f[0] - fretLen;

                do
                {
                    f.Insert(0, x);
                    x -= fretLen;
                }
                while (x > 0);
            }

            //do we need to pad the frets to get a position of 0 (as in, move frets back so that we can have a natural fret at time 0)
            int maxNote = this.Notes.MaxNoteOffsetSynced + _startPaddingMs;

            //HACK - NOTESONLY
            //int maxNote = this.Length - 1500;

            if (f.Count > 1)
            {
                int l = f[f.Count - 1] - f[f.Count - 2];
                while (f[f.Count - 1] < maxNote)
                    f.Add(f[f.Count - 1] + l);
            }

            //remove frets that are after the end of the audio but at least 1 after the last note and length
            while (f.Count != 0 && f[f.Count - 1] > this.Length && f[f.Count - 2] > maxNote)
                f.RemoveAt(f.Count - 1);

            //do we need to pad the frets to get a position of 0
            if (f.Count > 1 && f[0] != 0)
            {
                fretPadding = fretLen - f[0];
                for (int i = 0; i < f.Count; i++)
                    f[i] += fretPadding;
                f.Insert(0, 0); //insert 0 fret
            }

            _fretPadding = fretPadding;

            return f.ToArray();
        }