예제 #1
0
        private bool ReadPatterns(int idx)
        {
            var maxIdx = idx + blockSize;

            while (idx < maxIdx)
            {
                var songIdx = BitConverter.ToInt32(bytes, idx); idx += sizeof(int);
                var chanIdx = BitConverter.ToInt32(bytes, idx); idx += sizeof(int);
                var patIdx  = BitConverter.ToInt32(bytes, idx); idx += sizeof(int);
                var items   = BitConverter.ToInt32(bytes, idx); idx += sizeof(int);

                var song    = project.Songs[songIdx];
                var channel = song.Channels[chanIdx];
                var pattern = channel.GetPattern($"{patIdx:X2}");
                var dummy   = false;

                // Famitracker can have patterns that arent actually used in the song.
                // Skip with a dummy pattern.
                if (pattern == null)
                {
                    pattern = new Pattern(project.GenerateUniqueId(), song, channel.Type, $"{patIdx:X2}");
                    dummy   = true;
                }

                var fxCount = songEffectColumnCount[song][chanIdx];
                var fxData  = new RowFxData[song.PatternLength, fxCount + 1];
                patternFxData[pattern] = fxData;

                for (int i = 0; i < items; i++)
                {
                    var n = BitConverter.ToInt32(bytes, idx); idx += sizeof(int);

                    var note       = bytes[idx++];
                    var octave     = bytes[idx++];
                    var instrument = bytes[idx++];
                    var volume     = bytes[idx++];

                    // This happens when some patterns are longer than the song pattern length.
                    // The TNMT song from FamiTracker has this.
                    if (n < song.PatternLength)
                    {
                        if (volume != 16)
                        {
                            pattern.GetOrCreateNoteAt(n).Volume = (byte)(volume & 0x0f);
                        }

                        if (blockVersion < 5 && project.ExpansionAudio == Project.ExpansionFds && channel.Type == Channel.FdsWave && octave < 6 && octave != 0)
                        {
                            octave += 2;
                        }

                        if (note == 13)
                        {
                            pattern.GetOrCreateNoteAt(n).Value = Note.NoteRelease;
                        }
                        else if (note == 14)
                        {
                            pattern.GetOrCreateNoteAt(n).Value = Note.NoteStop;
                        }
                        else if (note != 0)
                        {
                            if (instrument < MaxInstruments && channel.Type != Channel.Dpcm)
                            {
                                pattern.GetOrCreateNoteAt(n).Instrument = instruments[instrument];
                            }
                            if (channel.Type == Channel.Noise)
                            {
                                pattern.GetOrCreateNoteAt(n).Value = (byte)(octave * 12 + note + 15);
                            }
                            else
                            {
                                pattern.GetOrCreateNoteAt(n).Value = (byte)(octave * 12 + note);
                            }
                        }
                    }

                    for (int j = 0; j < fxCount + 1; ++j)
                    {
                        RowFxData fx;
                        fx.fx    = bytes[idx++];
                        fx.param = bytes[idx++];

                        // See comment above.
                        if (n < song.PatternLength)
                        {
                            fxData[n, j] = fx;
                        }

                        ApplySimpleEffects(fx, pattern, n, patternLengths, !dummy);
                    }
                }
            }

            return(true);
        }
예제 #2
0
        protected void ApplySimpleEffects(RowFxData fx, Pattern pattern, int n, Dictionary <Pattern, byte> patternLengths, bool allowSongEffects)
        {
            Note note = null;

            switch (fx.fx)
            {
            case Effect_None:
                return;

            case Effect_Jump:
                // Ignore if there was a Dxx or Bxx before.
                if (allowSongEffects && !patternLengths.ContainsKey(pattern))
                {
                    pattern.Song.SetLoopPoint(fx.param);
                    patternLengths[pattern] = (byte)(n + 1);
                }
                return;

            case Effect_Skip:
                // Ignore if there was a Dxx or Bxx before.
                if (!patternLengths.ContainsKey(pattern))
                {
                    patternLengths[pattern] = (byte)(n + 1);
                }
                return;

            case Effect_Speed:
                if (pattern.Channel.SupportsEffect(Note.EffectSpeed))
                {
                    if (fx.param <= 0x1f)     // We only support speed change for now.
                    {
                        pattern.GetOrCreateNoteAt(n).Speed = Math.Max((byte)1, (byte)fx.param);
                    }
                    else
                    {
                        Log.LogMessage(LogSeverity.Warning, $"Only speed changes are supported, not tempo. Will be ignored. {GetPatternString(pattern, n)}");
                    }
                }
                return;

            case Effect_Pitch:
                if (pattern.Channel.SupportsEffect(Note.EffectFinePitch))
                {
                    pattern.GetOrCreateNoteAt(n).FinePitch = (sbyte)(0x80 - fx.param);
                }
                return;

            case Effect_Vibrato:
                if (pattern.Channel.SupportsEffect(Note.EffectVibratoDepth))
                {
                    note = pattern.GetOrCreateNoteAt(n);
                    note.VibratoDepth = (byte)(fx.param & 0x0f);
                    note.VibratoSpeed = (byte)VibratoSpeedImportLookup[fx.param >> 4];

                    if (note.VibratoDepth == 0 ||
                        note.VibratoSpeed == 0)
                    {
                        note.RawVibrato = 0;
                    }
                }
                return;

            case Effect_FdsModSpeedHi:
                if (pattern.Channel.SupportsEffect(Note.EffectFdsModSpeed))
                {
                    // TODO: If both hi/lo effects arent in a pair, this is likely not going to work.
                    note = pattern.GetOrCreateNoteAt(n);
                    if (!note.HasFdsModSpeed)
                    {
                        note.FdsModSpeed = 0;
                    }
                    note.FdsModSpeed = (ushort)(((note.FdsModSpeed) & 0x00ff) | (fx.param << 8));
                }
                return;

            case Effect_FdsModSpeedLo:
                if (pattern.Channel.SupportsEffect(Note.EffectFdsModSpeed))
                {
                    // TODO: If both hi/lo effects arent in a pair, this is likely not going to work.
                    note = pattern.GetOrCreateNoteAt(n);
                    if (!note.HasFdsModSpeed)
                    {
                        note.FdsModSpeed = 0;
                    }
                    note.FdsModSpeed = (ushort)(((note.FdsModSpeed) & 0xff00) | (fx.param << 0));
                }
                return;

            case Effect_FdsModDepth:
                if (pattern.Channel.SupportsEffect(Note.EffectFdsModDepth))
                {
                    pattern.GetOrCreateNoteAt(n).FdsModDepth = fx.param;
                }
                return;

            case Effect_DutyCycle:
                if (pattern.Channel.SupportsEffect(Note.EffectDutyCycle))
                {
                    pattern.GetOrCreateNoteAt(n).DutyCycle = fx.param;
                }
                return;

            case Effect_Delay:
                if (pattern.Channel.SupportsEffect(Note.EffectNoteDelay))
                {
                    pattern.GetOrCreateNoteAt(n).NoteDelay = Math.Min((byte)31, fx.param);
                }
                return;

            case Effect_NoteCut:
                if (pattern.Channel.SupportsEffect(Note.EffectCutDelay))
                {
                    pattern.GetOrCreateNoteAt(n).CutDelay = Math.Min((byte)31, fx.param);
                }
                return;

            case Effect_Halt:
            case Effect_PortaUp:
            case Effect_PortaDown:
            case Effect_Portamento:
            case Effect_SlideUp:
            case Effect_SlideDown:
            case Effect_Arpeggio:
                // These will be applied later.
                return;
            }

            if (EffectToTextLookup.ContainsKey(fx.fx))
            {
                Log.LogMessage(LogSeverity.Warning, $"Effect '{EffectToTextLookup[fx.fx]}' is not supported and will be ignored. {GetPatternString(pattern, n)}");
            }
            else
            {
                Log.LogMessage(LogSeverity.Warning, $"Unknown effect code ({fx.fx}) and will be ignored. {GetPatternString(pattern, n)}");
            }
        }
예제 #3
0
        public static Project Load(string filename)
        {
            var project = new Project();

            var envelopes   = new Dictionary <int, Envelope> [Project.ExpansionCount, Envelope.Max];
            var duties      = new Dictionary <int, int> [Project.ExpansionCount];
            var instruments = new Dictionary <int, Instrument>();
            var dpcms       = new Dictionary <int, DPCMSample>();
            var columns     = new int[5] {
                1, 1, 1, 1, 1
            };
            var patternFxData = new Dictionary <Pattern, RowFxData[, ]>();
            var noteLookup    = new Dictionary <string, int>
            {
                ["A-"] = 9,
                ["A#"] = 10,
                ["B-"] = 11,
                ["C-"] = 0,
                ["C#"] = 1,
                ["D-"] = 2,
                ["D#"] = 3,
                ["E-"] = 4,
                ["F-"] = 5,
                ["F#"] = 6,
                ["G-"] = 7,
                ["G#"] = 8
            };

            for (int i = 0; i < envelopes.GetLength(0); i++)
            {
                for (int j = 0; j < envelopes.GetLength(1); j++)
                {
                    envelopes[i, j] = new Dictionary <int, Envelope>();
                }
            }

            for (int i = 0; i < duties.Length; i++)
            {
                duties[i] = new Dictionary <int, int>();
            }

            DPCMSample currentDpcm  = null;
            int        dpcmWriteIdx = 0;
            Song       song         = null;
            string     patternName  = "";

            var lines = File.ReadAllLines(filename);

            for (int i = 0; i < lines.Length; i++)
            {
                var line = lines[i].Trim();

                if (line.StartsWith("TITLE"))
                {
                    project.Name = line.Substring(5).Trim(' ', '"');
                }
                else if (line.StartsWith("AUTHOR"))
                {
                    project.Author = line.Substring(6).Trim(' ', '"');
                }
                else if (line.StartsWith("COPYRIGHT"))
                {
                    project.Copyright = line.Substring(9).Trim(' ', '"');
                }
                else if (line.StartsWith("EXPANSION"))
                {
                    var exp = int.Parse(line.Substring(9));
                    if (exp == 1)
                    {
                        project.SetExpansionAudio(Project.ExpansionVrc6);
                    }
                }
                else if (line.StartsWith("MACRO"))
                {
                    var expansion = line.Substring(5, 4) == "VRC6" ? Project.ExpansionVrc6 : Project.ExpansionNone;
                    var halves    = line.Substring(line.IndexOf(' ')).Split(':');
                    var param     = halves[0].Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
                    var curve     = halves[1].Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);

                    var type = int.Parse(param[0]);
                    var idx  = int.Parse(param[1]);
                    var loop = int.Parse(param[2]);
                    var rel  = int.Parse(param[3]);

                    if (type < 3)
                    {
                        var env = new Envelope();
                        env.Length = curve.Length;

                        // FamiTracker allows envelope with release with no loop. We dont allow that.
                        if (type == Envelope.Volume && loop == -1 && rel != -1)
                        {
                            loop = rel;
                        }

                        env.Loop    = loop;
                        env.Release = type == Envelope.Volume && rel != -1 ? rel + 1 : -1;

                        for (int j = 0; j < curve.Length; j++)
                        {
                            env.Values[j] = sbyte.Parse(curve[j]);
                        }
                        if (type == 2)
                        {
                            env.Relative = true;
                        }
                        envelopes[expansion, type][idx] = env;
                    }
                    else if (type == 4)
                    {
                        duties[expansion][idx] = int.Parse(curve[0]);
                    }
                }
                else if (line.StartsWith("DPCMDEF"))
                {
                    var param = SplitStringKeepQuotes(line.Substring(7));
                    var name  = param[2];
                    var j     = 2;

                    while (!project.IsDPCMSampleNameUnique(name))
                    {
                        name = param[2] + "-" + j++;
                    }
                    currentDpcm = project.CreateDPCMSample(name, new byte[int.Parse(param[1])]);
                    dpcms[int.Parse(param[0])] = currentDpcm;
                    dpcmWriteIdx = 0;
                }
                else if (line.StartsWith("DPCM"))
                {
                    var param = line.Substring(6).Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
                    foreach (var s in param)
                    {
                        currentDpcm.Data[dpcmWriteIdx++] = Convert.ToByte(s, 16);
                    }
                }
                else if (line.StartsWith("KEYDPCM"))
                {
                    var param = line.Substring(7).Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
                    if (param[0] == "0")
                    {
                        int octave   = int.Parse(param[1]);
                        int semitone = int.Parse(param[2]);
                        int note     = octave * 12 + semitone + 1;

                        if (project.NoteSupportsDPCM(note))
                        {
                            int dpcm  = int.Parse(param[3]);
                            int pitch = int.Parse(param[4]);
                            int loop  = int.Parse(param[5]);

                            project.MapDPCMSample(note, dpcms[dpcm], pitch, loop != 0);
                        }
                    }
                }
                else if (line.StartsWith("INST2A03") || line.StartsWith("INSTVRC6"))
                {
                    var expansion = line.Substring(4, 4) == "VRC6" ? Project.ExpansionVrc6 : Project.ExpansionNone;
                    var param     = SplitStringKeepQuotes(line.Substring(line.IndexOf(' ')));

                    int idx  = int.Parse(param[0]);
                    int vol  = int.Parse(param[1]);
                    int arp  = int.Parse(param[2]);
                    int pit  = int.Parse(param[3]);
                    int dut  = int.Parse(param[5]);
                    var name = param[6];
                    var j    = 2;

                    if (!project.IsInstrumentNameUnique(name))
                    {
                        name = param[6] + "-" + j++;
                    }

                    var expansionType = line.StartsWith("INSTVRC6") ? Project.ExpansionVrc6 : Project.ExpansionNone;
                    var instrument    = project.CreateInstrument(expansionType, name);

                    if (vol >= 0)
                    {
                        instrument.Envelopes[0] = envelopes[expansion, 0][vol].Clone();
                    }
                    if (arp >= 0)
                    {
                        instrument.Envelopes[1] = envelopes[expansion, 1][arp].Clone();
                    }
                    if (pit >= 0)
                    {
                        instrument.Envelopes[2] = envelopes[expansion, 2][pit].Clone();
                    }
                    if (dut >= 0)
                    {
                        instrument.DutyCycle = duties[expansionType][dut];
                    }

                    instruments[idx] = instrument;
                }
                else if (line.StartsWith("TRACK"))
                {
                    var param = SplitStringKeepQuotes(line.Substring(5));

                    song = project.CreateSong(param[3]);
                    song.SetLength(0);
                    song.SetPatternLength(int.Parse(param[0]));
                    song.Speed = int.Parse(param[1]);
                    song.Tempo = int.Parse(param[2]);
                    columns    = new int[song.Channels.Length];
                }
                else if (line.StartsWith("COLUMNS"))
                {
                    var param = line.Substring(7).Split(new[] { ' ', ':' }, StringSplitOptions.RemoveEmptyEntries);
                    for (int j = 0; j < song.Channels.Length; j++)
                    {
                        columns[j] = int.Parse(param[j]);
                    }
                }
                else if (line.StartsWith("ORDER"))
                {
                    var orderIdx = Convert.ToInt32(line.Substring(6, 2), 16);
                    var values   = line.Substring(5).Split(':')[1].Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
                    var order    = new int[song.Channels.Length];
                    for (int j = 0; j < song.Channels.Length; j++)
                    {
                        int patternIdx = Convert.ToInt32(values[j], 16);
                        var name       = values[j];
                        var pattern    = song.Channels[j].GetPattern(name);

                        if (pattern == null)
                        {
                            pattern = song.Channels[j].CreatePattern(name);
                        }

                        song.Channels[j].PatternInstances[orderIdx] = pattern;
                    }

                    song.SetLength(song.Length + 1);
                }
                else if (line.StartsWith("PATTERN"))
                {
                    patternName = line.Substring(8);
                }
                else if (line.StartsWith("ROW"))
                {
                    var channels = line.Split(new[] { ':' }, StringSplitOptions.RemoveEmptyEntries);
                    var rowIdx   = Convert.ToInt32(channels[0].Substring(4, 2), 16);

                    for (int j = 1; j <= song.Channels.Length; j++)
                    {
                        var noteData = channels[j].Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
                        var pattern  = song.Channels[j - 1].GetPattern(patternName);

                        if (pattern == null)
                        {
                            continue;
                        }

                        //var fxData = new RowFxData[song.PatternLength];
                        if (!patternFxData.ContainsKey(pattern))
                        {
                            patternFxData[pattern] = new RowFxData[song.PatternLength, 4];
                        }

                        // Note
                        if (noteData[0] == "---")
                        {
                            pattern.Notes[rowIdx].Value = Note.NoteStop;
                        }
                        else if (noteData[0] == "===")
                        {
                            pattern.Notes[rowIdx].Value = Note.NoteRelease;
                        }
                        else if (noteData[0] != "...")
                        {
                            int famitoneNote;

                            if (j == 4)
                            {
                                famitoneNote = (Convert.ToInt32(noteData[0].Substring(0, 1), 16) + 31) + 1;
                            }
                            else
                            {
                                int semitone = noteLookup[noteData[0].Substring(0, 2)];
                                int octave   = noteData[0][2] - '0';
                                famitoneNote = octave * 12 + semitone + 1;
                            }

                            if (famitoneNote >= Note.MusicalNoteMin && famitoneNote <= Note.MusicalNoteMax)
                            {
                                pattern.Notes[rowIdx].Value      = (byte)famitoneNote;
                                pattern.Notes[rowIdx].Instrument = j == 5 ? null : instruments[Convert.ToInt32(noteData[1], 16)];
                            }
                            else
                            {
                                // Note outside of range.
                            }
                        }

                        // Volume
                        if (noteData[2] != ".")
                        {
                            pattern.Notes[rowIdx].Volume = Convert.ToByte(noteData[2], 16);
                        }

                        // Read FX.
                        for (int k = 0; k < columns[j - 1]; k++)
                        {
                            var fx = noteData[3 + k];

                            if (fx == "...")
                            {
                                continue;
                            }

                            var param = Convert.ToByte(fx.Substring(1), 16);

                            var fxData = patternFxData[pattern];
                            fxData[rowIdx, k].fx    = fx[0];
                            fxData[rowIdx, k].param = param;

                            switch (fx[0])
                            {
                            case 'B':     // Jump
                                pattern.Notes[rowIdx].Jump = param;
                                break;

                            case 'D':     // Skip
                                pattern.Notes[rowIdx].Skip = param;
                                break;

                            case 'F':              // Tempo
                                if (param <= 0x1f) // We only support speed change for now.
                                {
                                    pattern.Notes[rowIdx].Speed = param;
                                }
                                break;

                            case '4':     // Vibrato
                                pattern.Notes[rowIdx].VibratoDepth = (byte)(param & 0x0f);
                                pattern.Notes[rowIdx].VibratoSpeed = (byte)VibratoSpeedImportLookup[param >> 4];

                                if (pattern.Notes[rowIdx].VibratoDepth == 0 ||
                                    pattern.Notes[rowIdx].VibratoSpeed == 0)
                                {
                                    pattern.Notes[rowIdx].Vibrato = 0;
                                }
                                break;
                            }
                        }
                    }
                }
            }

            foreach (var s in project.Songs)
            {
                CreateSlideNotes(s, patternFxData);

                s.RemoveEmptyPatterns();
                s.SetSensibleBarLength();

                foreach (var c in s.Channels)
                {
                    c.ColorizePatterns();
                }
            }

            project.UpdateAllLastValidNotesAndVolume();

            return(project);
        }
예제 #4
0
        protected void ApplySimpleEffects(RowFxData fx, Pattern pattern, int n, Dictionary <Pattern, byte> patternLengths)
        {
            Note note = null;

            switch (fx.fx)
            {
            case Effect_Jump:
                pattern.Song.SetLoopPoint(fx.param);
                break;

            case Effect_Skip:
                patternLengths[pattern] = (byte)(n + 1);
                break;

            case Effect_Speed:
                if (fx.param <= 0x1f)     // We only support speed change for now.
                {
                    pattern.GetOrCreateNoteAt(n).Speed = Math.Max((byte)1, (byte)fx.param);
                }
                break;

            case Effect_Pitch:
                pattern.GetOrCreateNoteAt(n).FinePitch = (sbyte)(0x80 - fx.param);
                break;

            case Effect_Vibrato:
                note = pattern.GetOrCreateNoteAt(n);
                note.VibratoDepth = (byte)(fx.param & 0x0f);
                note.VibratoSpeed = (byte)VibratoSpeedImportLookup[fx.param >> 4];

                if (note.VibratoDepth == 0 ||
                    note.VibratoSpeed == 0)
                {
                    note.RawVibrato = 0;
                }
                break;

            case Effect_FdsModSpeedHi:
                // TODO: If both hi/lo effects arent in a pair, this is likely not going to work.
                note = pattern.GetOrCreateNoteAt(n);
                if (!note.HasFdsModSpeed)
                {
                    note.FdsModSpeed = 0;
                }
                note.FdsModSpeed = (ushort)(((note.FdsModSpeed) & 0x00ff) | (fx.param << 8));
                break;

            case Effect_FdsModSpeedLo:
                // TODO: If both hi/lo effects arent in a pair, this is likely not going to work.
                note = pattern.GetOrCreateNoteAt(n);
                if (!note.HasFdsModSpeed)
                {
                    note.FdsModSpeed = 0;
                }
                note.FdsModSpeed = (ushort)(((note.FdsModSpeed) & 0xff00) | (fx.param << 0));
                break;

            case Effect_FdsModDepth:
                pattern.GetOrCreateNoteAt(n).FdsModDepth = fx.param;
                break;
            }
        }
예제 #5
0
        public Project Load(string filename)
        {
            var envelopes   = new Dictionary <int, Envelope> [Project.ExpansionCount, Envelope.Count];
            var instruments = new Dictionary <int, Instrument>();
            var dpcms       = new Dictionary <int, DPCMSample>();
            var columns     = new int[5] {
                1, 1, 1, 1, 1
            };

            for (int i = 0; i < envelopes.GetLength(0); i++)
            {
                for (int j = 0; j < envelopes.GetLength(1); j++)
                {
                    envelopes[i, j] = new Dictionary <int, Envelope>();
                }
            }

            project           = new Project();
            project.TempoMode = Project.TempoFamiTracker;

            DPCMSample currentDpcm  = null;
            int        dpcmWriteIdx = 0;
            Song       song         = null;
            string     patternName  = "";

            var lines = File.ReadAllLines(filename);

            for (int i = 0; i < lines.Length; i++)
            {
                var line = lines[i].Trim();

                if (line.StartsWith("TITLE"))
                {
                    project.Name = line.Substring(5).Trim(' ', '"');
                }
                else if (line.StartsWith("AUTHOR"))
                {
                    project.Author = line.Substring(6).Trim(' ', '"');
                }
                else if (line.StartsWith("COPYRIGHT"))
                {
                    project.Copyright = line.Substring(9).Trim(' ', '"');
                }
                else if (line.StartsWith("EXPANSION"))
                {
                    var exp          = int.Parse(line.Substring(9));
                    var convertedExp = ConvertExpansionAudio(exp);

                    if (convertedExp < 0)
                    {
                        return(null);
                    }

                    project.SetExpansionAudio(convertedExp);
                }
                else if (line.StartsWith("N163CHANNELS"))
                {
                    var numExpChannels = int.Parse(line.Substring(12).Trim(' ', '"'));
                    project.SetExpansionAudio(Project.ExpansionN163, numExpChannels);
                }
                else if (line.StartsWith("MACRO"))
                {
                    var expansion = line.StartsWith("MACROVRC6") ? Project.ExpansionVrc6  :
                                    line.StartsWith("MACRON163") ? Project.ExpansionN163 : Project.ExpansionNone;

                    var halves = line.Substring(line.IndexOf(' ')).Split(':');
                    var param  = halves[0].Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
                    var curve  = halves[1].Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);

                    var type = int.Parse(param[0]);
                    var idx  = int.Parse(param[1]);
                    var loop = int.Parse(param[2]);
                    var rel  = int.Parse(param[3]);

                    var famistudioType = EnvelopeTypeLookup[type];

                    if (famistudioType < Envelope.Count)
                    {
                        var env = new Envelope(famistudioType);
                        env.Length = curve.Length;

                        // FamiTracker allows envelope with release with no loop. We dont allow that.
                        if (env.CanRelease && loop == -1 && rel != -1)
                        {
                            loop = rel;
                        }

                        env.Loop     = loop;
                        env.Release  = env.CanRelease && rel != -1 ? rel + 1 : -1;
                        env.Relative = famistudioType == Envelope.Pitch;

                        for (int j = 0; j < curve.Length; j++)
                        {
                            env.Values[j] = sbyte.Parse(curve[j]);
                        }

                        envelopes[expansion, famistudioType][idx] = env;
                    }
                }
                else if (line.StartsWith("DPCMDEF"))
                {
                    var param = SplitStringKeepQuotes(line.Substring(7));
                    currentDpcm = CreateUniquelyNamedSample(param[2], new byte[int.Parse(param[1])]);
                    dpcms[int.Parse(param[0])] = currentDpcm;
                    dpcmWriteIdx = 0;
                }
                else if (line.StartsWith("DPCM"))
                {
                    if (currentDpcm != null) // Can happen if more than 16KB of samples
                    {
                        var param = line.Substring(6).Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
                        foreach (var s in param)
                        {
                            currentDpcm.Data[dpcmWriteIdx++] = Convert.ToByte(s, 16);
                        }
                    }
                }
                else if (line.StartsWith("KEYDPCM"))
                {
                    var param = line.Substring(7).Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
                    if (param[0] == "0")
                    {
                        int octave   = int.Parse(param[1]);
                        int semitone = int.Parse(param[2]);
                        int note     = octave * 12 + semitone + 1;

                        if (project.NoteSupportsDPCM(note))
                        {
                            int dpcm  = int.Parse(param[3]);
                            int pitch = int.Parse(param[4]);
                            int loop  = int.Parse(param[5]);

                            project.MapDPCMSample(note, dpcms[dpcm], pitch, loop != 0);
                        }
                    }
                }
                else if (line.StartsWith("INST2A03") || line.StartsWith("INSTVRC6") || line.StartsWith("INSTN163"))
                {
                    var expansion = line.StartsWith("INSTVRC6") ? Project.ExpansionVrc6  :
                                    line.StartsWith("INSTN163") ? Project.ExpansionN163 : Project.ExpansionNone;

                    var param = SplitStringKeepQuotes(line.Substring(line.IndexOf(' ')));

                    int idx = int.Parse(param[0]);
                    int vol = int.Parse(param[1]);
                    int arp = int.Parse(param[2]);
                    int pit = int.Parse(param[3]);
                    int dut = int.Parse(param[5]);

                    var instrument = CreateUniquelyNamedInstrument(expansion, param[param.Length - 1]);

                    if (expansion == Project.ExpansionN163)
                    {
                        instrument.N163WavePreset = Envelope.WavePresetCustom;
                        instrument.N163WaveSize   = byte.Parse(param[6]);
                        instrument.N163WavePos    = byte.Parse(param[7]);
                    }

                    if (vol >= 0 && instrument.IsEnvelopeActive(Envelope.Volume))
                    {
                        instrument.Envelopes[Envelope.Volume] = envelopes[expansion, Envelope.Volume][vol].ShallowClone();
                    }
                    if (arp >= 0 && instrument.IsEnvelopeActive(Envelope.Arpeggio))
                    {
                        instrument.Envelopes[Envelope.Arpeggio] = envelopes[expansion, Envelope.Arpeggio][arp].ShallowClone();
                    }
                    if (pit >= 0 && instrument.IsEnvelopeActive(Envelope.Pitch))
                    {
                        instrument.Envelopes[Envelope.Pitch] = envelopes[expansion, Envelope.Pitch][pit].ShallowClone();
                    }
                    if (dut >= 0 && instrument.IsEnvelopeActive(Envelope.DutyCycle))
                    {
                        instrument.Envelopes[Envelope.DutyCycle] = envelopes[expansion, Envelope.DutyCycle][dut].ShallowClone();
                    }

                    instruments[idx] = instrument;
                }
                else if (line.StartsWith("INSTVRC7"))
                {
                    var param = SplitStringKeepQuotes(line.Substring(line.IndexOf(' ')));

                    int idx        = int.Parse(param[0]);
                    var instrument = CreateUniquelyNamedInstrument(Project.ExpansionVrc7, param[param.Length - 1]);

                    instrument.Vrc7Patch = byte.Parse(param[1]);
                    if (instrument.Vrc7Patch == 0)
                    {
                        for (int j = 0; j < 8; j++)
                        {
                            instrument.Vrc7PatchRegs[j] = Convert.ToByte(param[2 + j], 16);
                        }
                    }

                    instruments[idx] = instrument;
                }
                else if (line.StartsWith("INSTFDS"))
                {
                    var param = SplitStringKeepQuotes(line.Substring(line.IndexOf(' ')));

                    int idx       = int.Parse(param[0]);
                    int modEnable = int.Parse(param[1]);
                    int modSpeed  = int.Parse(param[2]);
                    int modDepth  = int.Parse(param[3]);
                    int modDelay  = int.Parse(param[4]);

                    if (modEnable == 0)
                    {
                        modSpeed = 0;
                        modDepth = 0;
                        modDelay = 0;
                    }

                    instruments[idx]               = CreateUniquelyNamedInstrument(Project.ExpansionFds, param[5]);
                    instruments[idx].FdsModSpeed   = (ushort)modSpeed;
                    instruments[idx].FdsModDepth   = (byte)modDepth;
                    instruments[idx].FdsModDelay   = (byte)modDelay;
                    instruments[idx].FdsWavePreset = Envelope.WavePresetCustom;
                    instruments[idx].FdsModPreset  = Envelope.WavePresetCustom;
                }
                else if (line.StartsWith("FDSMACRO"))
                {
                    var halves = line.Substring(line.IndexOf(' ')).Split(':');
                    var param  = halves[0].Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
                    var curve  = halves[1].Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);

                    var inst = int.Parse(param[0]);
                    var type = int.Parse(param[1]);
                    var loop = int.Parse(param[2]);
                    var rel  = int.Parse(param[3]);

                    var famistudioType = EnvelopeTypeLookup[type];

                    var env = instruments[inst].Envelopes[famistudioType];

                    env.Length = curve.Length;

                    // FamiTracker allows envelope with release with no loop. We dont allow that.
                    if (env.CanRelease && loop == -1 && rel != -1)
                    {
                        loop = rel;
                    }

                    env.Loop     = loop;
                    env.Release  = env.CanRelease && rel != -1 ? rel + 1 : -1;
                    env.Relative = famistudioType == Envelope.Pitch;

                    for (int j = 0; j < curve.Length; j++)
                    {
                        env.Values[j] = sbyte.Parse(curve[j]);
                    }
                }
                else if (line.StartsWith("FDSMOD") || line.StartsWith("FDSWAVE"))
                {
                    var mod    = line.StartsWith("FDSMOD");
                    var halves = line.Substring(line.IndexOf(' ')).Split(':');
                    var param  = halves[0].Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
                    var curve  = halves[1].Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);

                    var inst = int.Parse(param[0]);
                    var env  = instruments[inst].Envelopes[mod ? Envelope.FdsModulation : Envelope.FdsWaveform];
                    for (int j = 0; j < curve.Length; j++)
                    {
                        env.Values[j] = sbyte.Parse(curve[j]);
                    }
                    if (mod)
                    {
                        env.ConvertFdsModulationToAbsolute();
                    }
                }
                else if (line.StartsWith("N163WAVE"))
                {
                    var param = line.Substring(8).Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);

                    var instIdx = int.Parse(param[0]);
                    var waveIdx = int.Parse(param[1]);

                    // TODO: We could create different instruments for each wave.
                    if (waveIdx == 0)
                    {
                        var env = instruments[instIdx].Envelopes[Envelope.N163Waveform];

                        for (int j = 3; j < param.Length; j++)
                        {
                            env.Values[j - 3] = sbyte.Parse(param[j]);
                        }
                    }
                }
                else if (line.StartsWith("TRACK"))
                {
                    var param = SplitStringKeepQuotes(line.Substring(5));

                    song = project.CreateSong(param[3]);
                    song.SetLength(0);
                    song.SetDefaultPatternLength(int.Parse(param[0]));
                    song.FamitrackerSpeed = int.Parse(param[1]);
                    song.FamitrackerTempo = int.Parse(param[2]);
                    columns = new int[song.Channels.Length];
                }
                else if (line.StartsWith("COLUMNS"))
                {
                    var param = line.Substring(7).Split(new[] { ' ', ':' }, StringSplitOptions.RemoveEmptyEntries);
                    for (int j = 0; j < song.Channels.Length; j++)
                    {
                        columns[j] = int.Parse(param[j]);
                    }
                }
                else if (line.StartsWith("ORDER"))
                {
                    var orderIdx = Convert.ToInt32(line.Substring(6, 2), 16);
                    var values   = line.Substring(5).Split(':')[1].Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
                    var order    = new int[song.Channels.Length];
                    for (int j = 0; j < song.Channels.Length; j++)
                    {
                        int patternIdx = Convert.ToInt32(values[j], 16);
                        var name       = values[j];
                        var pattern    = song.Channels[j].GetPattern(name);

                        if (pattern == null)
                        {
                            pattern = song.Channels[j].CreatePattern(name);
                        }

                        song.Channels[j].PatternInstances[orderIdx] = pattern;
                    }

                    song.SetLength(song.Length + 1);
                }
                else if (line.StartsWith("PATTERN"))
                {
                    patternName = line.Substring(8);
                }
                else if (line.StartsWith("ROW"))
                {
                    var channels = line.Split(new[] { ':' }, StringSplitOptions.RemoveEmptyEntries);
                    var n        = Convert.ToInt32(channels[0].Substring(4, 2), 16);

                    for (int j = 1; j <= song.Channels.Length; j++)
                    {
                        var noteData = channels[j].Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
                        var pattern  = song.Channels[j - 1].GetPattern(patternName);

                        if (pattern == null)
                        {
                            continue;
                        }

                        //var fxData = new RowFxData[song.PatternLength];
                        if (!patternFxData.ContainsKey(pattern))
                        {
                            patternFxData[pattern] = new RowFxData[song.PatternLength, 4];
                        }

                        // Note
                        if (noteData[0] == "---")
                        {
                            pattern.GetOrCreateNoteAt(n).Value = Note.NoteStop;
                        }
                        else if (noteData[0] == "===")
                        {
                            pattern.GetOrCreateNoteAt(n).Value = Note.NoteRelease;
                        }
                        else if (noteData[0] != "...")
                        {
                            int famitoneNote;

                            if (j == 4)
                            {
                                famitoneNote = (Convert.ToInt32(noteData[0].Substring(0, 1), 16) + 31) + 1;
                            }
                            else
                            {
                                int semitone = TextToNoteLookup[noteData[0].Substring(0, 2)];
                                int octave   = noteData[0][2] - '0';
                                famitoneNote = octave * 12 + semitone + 1;
                            }

                            if (famitoneNote >= Note.MusicalNoteMin && famitoneNote <= Note.MusicalNoteMax)
                            {
                                var note = pattern.GetOrCreateNoteAt(n);
                                note.Value      = (byte)famitoneNote;
                                note.Instrument = j == 5 ? null : instruments[Convert.ToInt32(noteData[1], 16)];
                            }
                            else
                            {
                                // Note outside of range.
                            }
                        }

                        // Volume
                        if (noteData[2] != ".")
                        {
                            pattern.GetOrCreateNoteAt(n).Volume = Convert.ToByte(noteData[2], 16);
                        }

                        // Read FX.
                        for (int k = 0; k < columns[j - 1]; k++)
                        {
                            var fxStr = noteData[3 + k];

                            if (fxStr == "...")
                            {
                                continue;
                            }

                            var fx = new RowFxData();

                            if (project.ExpansionAudio == Project.ExpansionFds && FdsTextToEffectLookup.TryGetValue(fxStr[0], out var fdsFx))
                            {
                                fx.fx = (byte)fdsFx;
                            }
                            else
                            {
                                fx.fx = TextToEffectLookup[fxStr[0]];
                            }

                            fx.param = Convert.ToByte(fxStr.Substring(1), 16);
                            patternFxData[pattern][n, k] = fx;

                            ApplySimpleEffects(fx, pattern, n, patternLengths);
                        }
                    }
                }
            }

            FinishImport();

            return(project);
        }