public Config(string bgmPath)
{
BGMPath = bgmPath;
BGMFiles = Directory.GetFiles(bgmPath, "bgm*.smd", SearchOption.TopDirectoryOnly);
if (BGMFiles.Length == 0)
{
throw new Exception(Strings.ErrorDSENoSequences);
}
var songs = new Song[BGMFiles.Length];
for (int i = 0; i < BGMFiles.Length; i++)
{
using (var reader = new EndianBinaryReader(File.OpenRead(BGMFiles[i])))
{
SMD.Header header = reader.ReadObject <SMD.Header>();
songs[i] = new Song(i, $"{Path.GetFileNameWithoutExtension(BGMFiles[i])} - {new string(header.Label.TakeWhile(c => c != '\0').ToArray())}");
}
}
Playlists.Add(new Playlist(Strings.PlaylistMusic, songs));
}
public void LoadSong(long index)
{
if (_tracks != null)
{
for (int i = 0; i < _tracks.Length; i++)
{
_tracks[i].StopAllChannels();
}
_tracks = null;
}
string bgm = _config.BGMFiles[index];
_localSWD = new SWD(Path.ChangeExtension(bgm, "swd"));
_smdFile = File.ReadAllBytes(bgm);
using (var reader = new EndianBinaryReader(new MemoryStream(_smdFile)))
{
SMD.Header header = reader.ReadObject <SMD.Header>();
SMD.ISongChunk songChunk;
switch (header.Version)
{
case 0x402:
{
songChunk = reader.ReadObject <SMD.SongChunk_V402>();
break;
}
case 0x415:
{
songChunk = reader.ReadObject <SMD.SongChunk_V415>();
break;
}
default: throw new Exception(string.Format(Strings.ErrorDSEInvalidHeaderVersion, header.Version));
}
_tracks = new Track[songChunk.NumTracks];
Events = new List <SongEvent> [songChunk.NumTracks];
for (byte trackIndex = 0; trackIndex < songChunk.NumTracks; trackIndex++)
{
Events[trackIndex] = new List <SongEvent>();
bool EventExists(long offset)
{
return(Events[trackIndex].Any(e => e.Offset == offset));
}
long chunkStart = reader.BaseStream.Position;
reader.BaseStream.Position += 0x14; // Skip header
_tracks[trackIndex] = new Track(trackIndex, reader.BaseStream.Position);
uint lastNoteDuration = 0, lastRest = 0;
bool cont = true;
while (cont)
{
long offset = reader.BaseStream.Position;
void AddEvent(ICommand command)
{
Events[trackIndex].Add(new SongEvent(offset, command));
}
byte cmd = reader.ReadByte();
if (cmd <= 0x7F)
{
byte arg = reader.ReadByte();
int numParams = (arg & 0xC0) >> 6;
int oct = ((arg & 0x30) >> 4) - 2;
int k = arg & 0xF;
if (k < 12)
{
uint duration;
if (numParams == 0)
{
duration = lastNoteDuration;
}
else // Big Endian reading of 8, 16, or 24 bits
{
duration = 0;
for (int b = 0; b < numParams; b++)
{
duration = (duration << 8) | reader.ReadByte();
}
lastNoteDuration = duration;
}
if (!EventExists(offset))
{
AddEvent(new NoteCommand {
Key = (byte)k, OctaveChange = (sbyte)oct, Velocity = cmd, Duration = duration
});
}
}
else
{
throw new Exception(string.Format(Strings.ErrorDSEInvalidKey, trackIndex, offset, k));
}
}
else if (cmd >= 0x80 && cmd <= 0x8F)
{
lastRest = Utils.FixedRests[cmd - 0x80];
if (!EventExists(offset))
{
AddEvent(new RestCommand {
Rest = lastRest
});
}
}
else // 0x90-0xFF
{
// TODO: 0x95 - a rest that may or may not repeat depending on some condition within channels
// TODO: 0x9E - may or may not jump somewhere else depending on an unknown structure
switch (cmd)
{
case 0x90:
{
if (!EventExists(offset))
{
AddEvent(new RestCommand {
Rest = lastRest
});
}
break;
}
case 0x91:
{
lastRest = (uint)(lastRest + reader.ReadSByte());
if (!EventExists(offset))
{
AddEvent(new RestCommand {
Rest = lastRest
});
}
break;
}
case 0x92:
{
lastRest = reader.ReadByte();
if (!EventExists(offset))
{
AddEvent(new RestCommand {
Rest = lastRest
});
}
break;
}
case 0x93:
{
lastRest = reader.ReadUInt16();
if (!EventExists(offset))
{
AddEvent(new RestCommand {
Rest = lastRest
});
}
break;
}
case 0x94:
{
lastRest = (uint)(reader.ReadByte() | (reader.ReadByte() << 8) | (reader.ReadByte() << 16));
if (!EventExists(offset))
{
AddEvent(new RestCommand {
Rest = lastRest
});
}
break;
}
case 0x96:
case 0x97:
case 0x9A:
case 0x9B:
case 0x9F:
case 0xA2:
case 0xA3:
case 0xA6:
case 0xA7:
case 0xAD:
case 0xAE:
case 0xB7:
case 0xB8:
case 0xB9:
case 0xBA:
case 0xBB:
case 0xBD:
case 0xC1:
case 0xC2:
case 0xC4:
case 0xC5:
case 0xC6:
case 0xC7:
case 0xC8:
case 0xC9:
case 0xCA:
case 0xCC:
case 0xCD:
case 0xCE:
case 0xCF:
case 0xD9:
case 0xDA:
case 0xDE:
case 0xE6:
case 0xEB:
case 0xEE:
case 0xF4:
case 0xF5:
case 0xF7:
case 0xF9:
case 0xFA:
case 0xFB:
case 0xFC:
case 0xFD:
case 0xFE:
case 0xFF:
{
if (!EventExists(offset))
{
AddEvent(new InvalidCommand {
Command = cmd
});
}
break;
}
case 0x98:
{
if (!EventExists(offset))
{
AddEvent(new FinishCommand());
}
cont = false;
break;
}
case 0x99:
{
if (!EventExists(offset))
{
AddEvent(new LoopStartCommand {
Offset = reader.BaseStream.Position
});
}
break;
}
case 0xA0:
{
byte octave = reader.ReadByte();
if (!EventExists(offset))
{
AddEvent(new OctaveSetCommand {
Octave = octave
});
}
break;
}
case 0xA1:
{
sbyte change = reader.ReadSByte();
if (!EventExists(offset))
{
AddEvent(new OctaveAddCommand {
OctaveChange = change
});
}
break;
}
case 0xA4:
case 0xA5: // The code for these two is identical
{
byte tempoArg = reader.ReadByte();
if (!EventExists(offset))
{
AddEvent(new TempoCommand {
Command = cmd, Tempo = tempoArg
});
}
break;
}
case 0xAB:
{
byte[] bytes = reader.ReadBytes(1);
if (!EventExists(offset))
{
AddEvent(new SkipBytesCommand {
Command = cmd, SkippedBytes = bytes
});
}
break;
}
case 0xAC:
{
byte voice = reader.ReadByte();
if (!EventExists(offset))
{
AddEvent(new VoiceCommand {
Voice = voice
});
}
break;
}
case 0xCB:
case 0xF8:
{
byte[] bytes = reader.ReadBytes(2);
if (!EventExists(offset))
{
AddEvent(new SkipBytesCommand {
Command = cmd, SkippedBytes = bytes
});
}
break;
}
case 0xD7:
{
ushort bend = reader.ReadUInt16();
if (!EventExists(offset))
{
AddEvent(new PitchBendCommand {
Bend = bend
});
}
break;
}
case 0xE0:
{
byte volume = reader.ReadByte();
if (!EventExists(offset))
{
AddEvent(new VolumeCommand {
Volume = volume
});
}
break;
}
case 0xE3:
{
byte expression = reader.ReadByte();
if (!EventExists(offset))
{
AddEvent(new ExpressionCommand {
Expression = expression
});
}
break;
}
case 0xE8:
{
byte panArg = reader.ReadByte();
if (!EventExists(offset))
{
AddEvent(new PanpotCommand {
Panpot = (sbyte)(panArg - 0x40)
});
}
break;
}
case 0x9D:
case 0xB0:
case 0xC0:
{
if (!EventExists(offset))
{
AddEvent(new UnknownCommand {
Command = cmd, Args = Array.Empty <byte>()
});
}
break;
}
case 0x9C:
case 0xA9:
case 0xAA:
case 0xB1:
case 0xB2:
case 0xB3:
case 0xB5:
case 0xB6:
case 0xBC:
case 0xBE:
case 0xBF:
case 0xC3:
case 0xD0:
case 0xD1:
case 0xD2:
case 0xDB:
case 0xDF:
case 0xE1:
case 0xE7:
case 0xE9:
case 0xEF:
case 0xF6:
{
byte[] args = reader.ReadBytes(1);
if (!EventExists(offset))
{
AddEvent(new UnknownCommand {
Command = cmd, Args = args
});
}
break;
}
case 0xA8:
case 0xB4:
case 0xD3:
case 0xD5:
case 0xD6:
case 0xD8:
case 0xF2:
{
byte[] args = reader.ReadBytes(2);
if (!EventExists(offset))
{
AddEvent(new UnknownCommand {
Command = cmd, Args = args
});
}
break;
}
case 0xAF:
case 0xD4:
case 0xE2:
case 0xEA:
case 0xF3:
{
byte[] args = reader.ReadBytes(3);
if (!EventExists(offset))
{
AddEvent(new UnknownCommand {
Command = cmd, Args = args
});
}
break;
}
case 0xDD:
case 0xE5:
case 0xED:
case 0xF1:
{
byte[] args = reader.ReadBytes(4);
if (!EventExists(offset))
{
AddEvent(new UnknownCommand {
Command = cmd, Args = args
});
}
break;
}
case 0xDC:
case 0xE4:
case 0xEC:
case 0xF0:
{
byte[] args = reader.ReadBytes(5);
if (!EventExists(offset))
{
AddEvent(new UnknownCommand {
Command = cmd, Args = args
});
}
break;
}
default: throw new Exception(string.Format(Strings.ErrorAlphaDreamDSEMP2KSDATInvalidCommand, trackIndex, offset, cmd));
}
}
}
uint chunkLength = reader.ReadUInt32(chunkStart + 0xC);
reader.BaseStream.Position += chunkLength;
// Align 4
while (reader.BaseStream.Position % 4 != 0)
{
reader.BaseStream.Position++;
}
}
SetTicks();
}
}