static void Main(string[] args)
{
Console.WriteLine("m4a2s version 0.1, Copyright (C) 2017 ipatix");
Console.WriteLine("m4a2s comes with ABSOLUTELY NO WARRANTY; for details see LICENSE.txt");
Console.WriteLine("This is free software, and you are welcome to redistribute it");
Console.WriteLine("under certain conditions; see LICENSE.txt for details.");
int songtable = 0;
if (args.Length != 3)
{
ShowUsage();
}
if (!File.Exists(args[0]))
{
ShowUsage();
}
if (!Directory.Exists(args[2]))
{
ShowUsage();
}
try
{
songtable = Convert.ToInt32(args[1], 16);
}
catch
{
ShowUsage();
}
string romPath = args[0];
string destFolder = args[2];
if (!Directory.Exists(Path.Combine(destFolder, "seq")))
{
Directory.CreateDirectory(Path.Combine(destFolder, "seq"));
}
if (!Directory.Exists(Path.Combine(destFolder, "wave")))
{
Directory.CreateDirectory(Path.Combine(destFolder, "wave"));
}
if (!Directory.Exists(Path.Combine(destFolder, "bank")))
{
Directory.CreateDirectory(Path.Combine(destFolder, "bank"));
}
Rom.LoadRom(romPath, songtable);
/*
* build up the rom index
*/
Console.WriteLine("Building up index");
Stopwatch sw = new Stopwatch();
sw.Start();
Index.IndexRom();
sw.Stop();
Console.WriteLine("Index successfully build in {0} ms", sw.ElapsedMilliseconds);
sw.Reset();
sw.Start();
Hashtable index = Index.GetHashtable();
foreach (DictionaryEntry Hent in index)
{
Entity ent = (Entity)Hent.Value;
string fileName;
switch (ent.Type)
{
case EntityType.Bank:
fileName = Path.Combine(Path.Combine(destFolder, "bank"), ent.Guid + ".s");
Voicegroup.disassemble(index, ent, fileName);
break;
case EntityType.KeyMap:
fileName = Path.Combine(Path.Combine(destFolder, "bank"), ent.Guid + ".s");
KeyMap.disassemble(ent, fileName);
break;
case EntityType.Wave:
fileName = Path.Combine(Path.Combine(destFolder, "wave"), ent.Guid + ".s");
Wave.disassemble(ent, fileName);
break;
case EntityType.GbWave:
fileName = Path.Combine(Path.Combine(destFolder, "wave"), ent.Guid + ".s");
GbWave.disassemble(ent, fileName);
break;
case EntityType.Song:
fileName = Path.Combine(Path.Combine(destFolder, "seq"), ent.Guid + ".s");
Song.disassemble(index, ent, fileName);
break;
default:
throw new Exception("Invalid Entity Type!");
}
Console.WriteLine("Succesfully disassembled Entity from 0x{0} to file: {1}", ent.Offset.ToString("X7"), fileName);
}
Songtable.disassemble(index, Path.Combine(destFolder, "_songtable.s"));
sw.Stop();
Console.WriteLine("Succesfully disassembled Songtable from 0x{0}", Rom.SongtableOffset);
Console.WriteLine("Finished exporting data after {0} ms", sw.ElapsedMilliseconds);
}
public static void disassemble(Hashtable index, Entity song, string destFile)
{
StringBuilder oasm = new StringBuilder();
oasm.AppendLine("@ File generated by m4a2s Song-Module");
// read header information from ROM
int songOffset = song.Offset;
Rom.Reader.BaseStream.Position = songOffset;
byte numTracks = Rom.Reader.ReadByte();
byte numBlocks = Rom.Reader.ReadByte(); // as usual, the usage of this byte is unknown
byte priority = Rom.Reader.ReadByte();
byte reverb = Rom.Reader.ReadByte();
int vgrOffset = Rom.Reader.ReadInt32() - Rom.Map;
int[] trackOffsets = new int[numTracks];
for (int i = 0; i < numTracks; i++)
{
trackOffsets[i] = Rom.Reader.ReadInt32() - Rom.Map;
}
oasm.AppendLine("\t.include \"MPlayDef.s\"");
oasm.AppendLine();
oasm.AppendLine("\t.equ\t" + song.Guid + "_grp, " + ((Entity)index[vgrOffset]).Guid);
oasm.AppendLine("\t.equ\t" + song.Guid + "_pri, " + priority);
oasm.AppendLine("\t.equ\t" + song.Guid + "_rev, " + reverb);
oasm.AppendLine("\t.equ\t" + song.Guid + "_mvl, 127");
oasm.AppendLine("\t.equ\t" + song.Guid + "_key, 0");
oasm.AppendLine();
oasm.AppendLine("\t.section .rodata");
oasm.AppendLine("\t.global\t" + song.Guid);
oasm.AppendLine("\t.align\t2");
oasm.AppendLine();
for (int cTrack = 0; cTrack < numTracks; cTrack++)
{
oasm.AppendLine("@*********************** Track " + (cTrack + 1).ToString("D2") + " ***********************@");
oasm.AppendLine();
oasm.AppendLine(song.Guid + "_" + cTrack + ":");
// set reader position
Rom.Reader.BaseStream.Position = trackOffsets[cTrack];
Event lastEvent = Event.None;
while (true)
{
byte cmd = Rom.Reader.ReadByte();
// if delay
if (cmd >= 0x80 && cmd <= (0x80 + 48))
{
oasm.AppendLine("\t.byte\t" + Tables.Wxx[cmd - 0x80]);
}
// if FINE
else if (cmd == 0xB1)
{
oasm.AppendLine("\t.byte\tFINE");
oasm.AppendLine();
break;
}
// if GOTO
else if (cmd == 0xB2)
{
oasm.AppendLine("\t.byte\tGOTO");
int targetPosition = Rom.Reader.ReadInt32() - Rom.Map;
oasm.AppendLine("\t .word\t" + song.Guid + "_" + cTrack + " + 0x" +
(targetPosition - trackOffsets[cTrack]).ToString("X"));
oasm.AppendLine("\t.byte\tFINE");
oasm.AppendLine();
break;
}
// if PATT
else if (cmd == 0xB3)
{
oasm.AppendLine("\t.byte\tPATT");
int targetPosition = Rom.Reader.ReadInt32() - Rom.Map;
oasm.AppendLine("\t .word\t" + song.Guid + "_" + cTrack + " + 0x" + (targetPosition - trackOffsets[cTrack]).ToString("X"));
}
// if PEND
else if (cmd == 0xB4)
{
oasm.AppendLine("\t.byte\tPEND");
}
// if REPT
else if (cmd == 0xB5)
{
byte numRepeats = Rom.Reader.ReadByte();
oasm.AppendLine("\t.byte\tREPT , " + numRepeats);
int targetPosition = Rom.Reader.ReadInt32() - Rom.Map;
oasm.AppendLine("\t .word\t" + song.Guid + "_" + cTrack + " + 0x" + (targetPosition - trackOffsets[cTrack]).ToString("X"));
}
// if MEMACC
else if (cmd == 0xB9)
{
byte par1 = Rom.Reader.ReadByte();
byte par2 = Rom.Reader.ReadByte();
byte par3 = Rom.Reader.ReadByte();
oasm.AppendLine("\t.byte\tMEMACC, " + par1 + ", " + par2 + ", " + par3);
}
// if PRIO
else if (cmd == 0xBA)
{
byte prio = Rom.Reader.ReadByte();
oasm.AppendLine("\t.byte\tPRIO , " + prio);
}
// if TEMPO
else if (cmd == 0xBB)
{
int speed = Rom.Reader.ReadByte() * 2;
oasm.AppendLine("\t.byte\tTEMPO , " + speed + "/2");
}
// if KEYSH
else if (cmd == 0xBC)
{
int shift = Rom.Reader.ReadSByte();
string str;
if (shift < 0)
{
str = shift.ToString();
}
else
{
str = "+" + shift;
}
oasm.AppendLine("\t.byte\tKEYSH , " + song.Guid + "_key" + str);
}
// if VOICE
else if (cmd == 0xBD)
{
byte instr = Rom.Reader.ReadByte();
oasm.AppendLine("\t.byte\t\tVOICE , " + instr);
}
/*
* from here repeatable commands will follow
*/
// if VOL
else if (cmd == 0xBE)
{
byte vol = Rom.Reader.ReadByte();
oasm.AppendLine("\t.byte\t\tVOL , " + vol + "*" + song.Guid + "_mvl/mxv");
lastEvent = Event.Vol;
}
// if PAN
else if (cmd == 0xBF)
{
byte pan = Rom.Reader.ReadByte();
string str;
if (pan < 0x40)
{
str = (pan - 0x40).ToString();
}
else
{
str = "+" + (pan - 0x40);
}
oasm.AppendLine("\t.byte\t\tPAN , c_v" + str);
lastEvent = Event.Pan;
}
// if BEND
else if (cmd == 0xC0)
{
byte bend = Rom.Reader.ReadByte();
string str;
if (bend < 0x40)
{
str = (bend - 0x40).ToString();
}
else
{
str = "+" + (bend - 0x40);
}
oasm.AppendLine("\t.byte\t\tBEND , c_v" + str);
lastEvent = Event.Bend;
}
// if BENDR
else if (cmd == 0xC1)
{
byte bendr = Rom.Reader.ReadByte();
oasm.AppendLine("\t.byte\t\tBENDR , " + bendr);
lastEvent = Event.Bendr;
}
// if LFOS
else if (cmd == 0xC2)
{
byte lfos = Rom.Reader.ReadByte();
oasm.AppendLine("\t.byte\t\tLFOS , " + lfos);
}
// if LFODL
else if (cmd == 0xC3)
{
byte lfodl = Rom.Reader.ReadByte();
oasm.AppendLine("\t.byte\t\tLFODL , " + lfodl);
}
// if MOD
else if (cmd == 0xC4)
{
byte mod = Rom.Reader.ReadByte();
oasm.AppendLine("\t.byte\t\tMOD , " + mod);
lastEvent = Event.Mod;
}
// if MODT
else if (cmd == 0xC5)
{
byte modt = Rom.Reader.ReadByte();
if (modt < 3)
{
oasm.AppendLine("\t.byte\t\tMODT , " + Tables.Modt[modt]);
}
else
{
oasm.AppendLine("\t.byte\t\tMODT , " + modt);
}
}
// if TUNE
else if (cmd == 0xC8)
{
byte tune = Rom.Reader.ReadByte();
string str;
if (tune < 0x40)
{
str = (tune - 0x40).ToString();
}
else
{
str = "+" + (tune - 0x40);
}
oasm.AppendLine("\t.byte\t\tTUNE , c_v" + str);
lastEvent = Event.Tune;
}
// if XCMD
else if (cmd == 0xCD)
{
byte xcmdtype = Rom.Reader.ReadByte();
byte xcmdarg = Rom.Reader.ReadByte();
if (xcmdtype == 0x8)
{
oasm.AppendLine("\t.byte\t\tXCMD , xIECV , " + xcmdarg);
}
else if (xcmdtype == 0x9)
{
oasm.AppendLine("\t.byte\t\tXCMD , xIECL , " + xcmdarg);
}
else
{
throw new NotSupportedException("Invalid XCMD Type");
}
lastEvent = Event.Xcmd;
}
// if EOT
else if (cmd == 0xCE)
{
if (Rom.ReaderPeekByte() <= 127)
{
oasm.AppendLine("\t.byte\t\tEOT , " + Tables.Note[Rom.Reader.ReadByte()]);
}
else
{
oasm.AppendLine("\t.byte\t\tEOT");
}
lastEvent = Event.Eot;
}
// if NOTE
else if (cmd >= 0xCF && cmd <= (0xD0 + 47))
{
oasm.Append("\t.byte\t\t" + Tables.Nxx[cmd - 0xCF]);
if (Rom.ReaderPeekByte() > 127) // peek note pitch
{
oasm.AppendLine();
}
else
{
oasm.Append(" , " + Tables.Note[Rom.Reader.ReadByte()]);
if (Rom.ReaderPeekByte() > 127) // peek note velocity
{
oasm.AppendLine();
}
else
{
oasm.Append(", v" + Rom.Reader.ReadByte().ToString("D3"));
if (Rom.ReaderPeekByte() > 127)
{
oasm.AppendLine();
}
else
{
oasm.AppendLine(", " + Tables.Gtp(Rom.Reader.ReadByte()));
}
}
}
lastEvent = Event.Note;
}
else if (cmd >= 0x0 && cmd <= 0x7F)
{
if (lastEvent == Event.Bend)
{
int bend = cmd - 0x40;
string str;
if (bend < 0)
{
str = bend.ToString();
}
else
{
str = "+" + bend;
}
oasm.AppendLine("\t.byte\t\t c_v" + str);
}
else if (lastEvent == Event.Bendr)
{
oasm.AppendLine("\t.byte\t\t " + cmd);
}
else if (lastEvent == Event.Eot)
{
oasm.AppendLine("\t.byte\t\t " + Tables.Note[cmd]);
}
else if (lastEvent == Event.Mod)
{
oasm.AppendLine("\t.byte\t\t " + cmd);
}
else if (lastEvent == Event.None)
{
Console.Write(oasm.ToString());
throw new Exception("Trying to repeat an event that hasn't occured yet");
}
else if (lastEvent == Event.Note)
{
oasm.Append("\t.byte\t\t " + Tables.Note[cmd]);
if (Rom.ReaderPeekByte() > 128) // probe for velocity
{
oasm.AppendLine();
}
else
{
oasm.Append(", v" + Rom.Reader.ReadByte().ToString("D3"));
if (Rom.ReaderPeekByte() > 128) // peek for gate time
{
oasm.AppendLine();
}
else
{
oasm.AppendLine(", " + Tables.Gtp(Rom.Reader.ReadByte()));
}
}
}
else if (lastEvent == Event.Pan)
{
int pan = cmd - 0x40;
string str;
if (pan < 0)
{
str = pan.ToString();
}
else
{
str = "+" + pan;
}
oasm.AppendLine("\t.byte\t\t c_v" + str);
}
else if (lastEvent == Event.Tune)
{
int tune = cmd - 0x40;
string str;
if (tune < 0)
{
str = tune.ToString();
}
else
{
str = "+" + tune;
}
oasm.AppendLine("\t.byte\t\t c_v" + str);
}
else if (lastEvent == Event.Vol)
{
oasm.AppendLine("\t.byte\t\t " + cmd + "*" + song.Guid + "_mvl/mxv");
}
else if (lastEvent == Event.Xcmd)
{
byte xcmdtype = cmd;
byte xcmdarg = Rom.Reader.ReadByte();
if (xcmdtype == 0x8)
{
oasm.AppendLine("\t.byte\t\t xIECV , " + xcmdarg);
}
else if (xcmdtype == 0x9)
{
oasm.AppendLine("\t.byte\t\t xIECL , " + xcmdarg);
}
else
{
Console.Write(oasm.ToString());
throw new NotSupportedException("Invalid XCMD Type");
}
}
else
{
throw new Exception("This Exception shouldn't be able to occur!");
}
}
// if an unsupported command occurs
else
{
throw new Exception("Unsupported command 0x" + cmd.ToString("X2")
+ " at offset 0x" + (Rom.Reader.BaseStream.Position - 1).ToString("X7")
+ " on track " + cTrack
+ " from song-header at 0x" + song.Offset.ToString("X7"));
}
}
}
oasm.AppendLine("@******************************************************@");
oasm.AppendLine();
oasm.AppendLine("\t.align\t2");
oasm.AppendLine();
oasm.AppendLine(song.Guid + ":");
oasm.AppendLine("\t.byte\t" + numTracks + "\t@ NumTrks");
oasm.AppendLine("\t.byte\t" + numBlocks + "\t@ NumBlks");
oasm.AppendLine("\t.byte\t" + song.Guid + "_pri\t@ Priority");
oasm.AppendLine("\t.byte\t" + song.Guid + "_rev\t@ Reverb");
oasm.AppendLine();
oasm.AppendLine("\t.word\t" + song.Guid + "_grp");
oasm.AppendLine();
for (int i = 0; i < numTracks; i++)
{
oasm.AppendLine("\t.word\t" + song.Guid + "_" + i);
}
oasm.AppendLine();
oasm.AppendLine("\t.end");
File.WriteAllText(destFile, oasm.ToString());
}
