public byte[] vocaloid; // uncompressed
// From known item and packpath
public BBPRecord(JbMgrFormat.JbMgrItem item, string path, int slot)
{
Slot = slot;
FullPath = path;
mgrItem = item;
if (item.Flags.OnSD)
{
var buffer = File.ReadAllBytes(path);
var bytes = buffer;
var nums = Enumerable.Range(0, 17).Select(i => BitConverter.ToInt32(bytes, i * 4)).ToList();
var unc1 = Decompress(bytes, nums[3], nums[4]);
bbp = unc1.ToStruct<BBPFormat>();
if (nums[5] == 1) vocaloid = Decompress(bytes, nums[7], nums[8]);
}
else
{
bbp = new BBPFormat
{
title = item.Title.StringToArray(250),
channelInfo = new BBPFormat.ChannelInfo[0]
};
}
}
public JbManager(string path)
{
FilePath = path;
if (new FileInfo(path).Length != binSize)
{
throw new InvalidDataException($"{path} has an incorrect filesize!");
}
using (var ms = new MemoryStream())
{
using (var gz = new GZipStream(File.OpenRead(path), CompressionMode.Decompress))
{
gz.CopyTo(ms);
}
// Convert file contents into our struct
if (ms.Length != Marshal.SizeOf<JbMgrFormat>())
{
throw new InvalidDataException($"{path} has an incorrect buffer length!");
}
mgr = ms.ToArray().ToStruct<JbMgrFormat>();
}
}
public static void Convert(string path, out JbMgrFormat.JbMgrItem mgrItem, out BBPFormat bbp, out byte[] vocaloid)
{
mgrItem = JbMgrFormat.JbMgrItem.Empty;
vocaloid = null;
using (var br = new BinReader(path))
{
// Obtain ID2 and go look for all records in memory
br.Goto(0xC16C68);
mgrItem.OtherID = br.ReadUInt32();
br.Goto(0xC16E90);
br.Goto(br.ReadUInt32() + 4);
br.Goto(br.ReadUInt32());
br.Goto(br.ReadUInt32() + 56);
br.Goto(br.ReadUInt32() + 24);
br.Goto(br.ReadUInt32() + 12);
// Go through records in memory to find the matching one
uint recordCount = br.ReadUInt32();
br.BaseStream.Position += 4;
uint recordAddr = br.ReadUInt32();
if (recordCount == 100)
{
br.BaseStream.Position += 8;
recordCount = br.ReadUInt32();
}
br.Goto(recordAddr);
while (br.ReadUInt32() != mgrItem.OtherID)
{
if (--recordCount == 0) throw new InvalidDataException($"{path} has incorrect data -- could not find matching record");
br.BaseStream.Position += 48;
}
// Read mgrItem metadata from memory
mgrItem.ID = br.ReadUInt32();
mgrItem.Title = br.ReadStringPointer();
if (mgrItem.Title.Length == 50 && mgrItem.Title[49] == '…')
{
mgrItem.Title = mgrItem.Title.Substring(0, 49);
}
mgrItem.TitleSimple = br.ReadStringPointer().Simplify();
br.BaseStream.Position += 8;
mgrItem.Author = br.ReadStringPointer();
br.BaseStream.Position += 12;
var code = br.ReadStringPointer();
// Finally, obtain pack data
br.Goto(0xC16CF4);
var packaddr = br.ReadUInt32();
var packsize = br.ReadInt32();
if (packsize >= 16777216) throw new InvalidDataException($"{path} has incorrect header error #5 {mgrItem.Title}:{mgrItem.Author}");
br.Goto(packaddr);
var bytes = br.ReadBytes(packsize);
if (!gzipHeaderBytes.SequenceEqual(bytes.Take(16)))
throw new InvalidDataException($"{path} has incorrect data error #7 {mgrItem.Title}:{mgrItem.Author}");
var nums = Enumerable.Range(0, 17).Select(i => BitConverter.ToInt32(bytes, i * 4)).ToList();
//overwrite bbp's ID and title
bbp = Decompress(bytes, nums[3], nums[4]).ToStruct<BBPFormat>();
bbp.titleID = (int)mgrItem.ID;
bbp.title = mgrItem.Title.StringToArray(bbp.title.Length);
bbp.test0 = 1;
bbp.test2 = (byte)(char.IsNumber(code[1]) ? 0 : 1);
vocaloid = null;
if (nums[5] == 1) vocaloid = Decompress(bytes, nums[7], nums[8]);
//File.WriteAllBytes($"{path}.dat", bbp.StructToArray());
//if (vocaloid != null) File.WriteAllBytes($"{path}.voc", vocaloid);
// metadata stuff temporarily here
var instrTypes = bbp.channelInfo.Select(c => c.playType);
var hasPiano = instrTypes.Contains(PlayType.Piano);
var hasGuitar = instrTypes.Contains(PlayType.Guitar);
var hasDrum = instrTypes.Contains(PlayType.Drum);
//mgr.Flags
var instrx = bbp.timeSignature == 3;
var lyrics = bbp.karaokeTimer[0] != 0x3FFF;
var melody = bbp.test3 != -1;
var isclassic = bbp.test2 == 1;
mgrItem.Flags = new JbMgrFormat.JbMgrItem.JbFlags
{
HasDrum = hasDrum,
HasGuitar = hasGuitar,
HasPiano = hasPiano,
HasLyrics = lyrics,
HasMelody = melody,
IsValid = true,
OnSD = true,
HasVocals = vocaloid != null,
IsSingable = vocaloid != null,
Parts = bbp.channelInfo.Count(c => c.instrument != 0),
IsReceived = true,
HasInstrX = instrx,
IsClassic = isclassic
};
}
}
public static BBPFormat Convert(BDXFormat bdx, out JbMgrFormat.JbMgrItem mgr)
{
var converted = new BDX2BBP(bdx);
mgr = converted.mgr;
return converted.bbp;
}