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Add support for new Circus Voice.dat format #167

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Merged
crskycode merged 1 commit into from
Mar 1, 2026
+63 −6
Merged

Add support for new Circus Voice.dat format #167

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69 changes: 63 additions & 6 deletions ArcFormats/Circus/ArcCircus.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -47,20 +47,46 @@ public DatOpener ()

public override ArcFile TryOpen (ArcView file)
{
int count = file.View.ReadInt32 (0);
var arcFile = TryOpenFromHeader(file);
if (null != arcFile)
{
return arcFile;
}

arcFile = TryOpenFromFooter(file);

return arcFile;
}

public ArcFile TryOpenFromHeader(ArcView file)
{
int count = file.View.ReadInt32(0);
if (count <= 1 || count > 0xfffff)
return null;
var dir = ReadIndex (file, count, 0x24);
var dir = ReadIndexV1(file, count, 0x24);
if (null == dir)
dir = ReadIndex (file, count, 0x30);
dir = ReadIndexV1(file, count, 0x30);
if (null == dir)
dir = ReadIndex (file, count, 0x3C);
dir = ReadIndexV1(file, count, 0x3C);
if (null == dir)
return null;
return new ArcFile (file, this, dir);
return new ArcFile(file, this, dir);
}

public ArcFile TryOpenFromFooter(ArcView file)
{
int count = file.View.ReadInt32(file.MaxOffset - 4);
if(count <= 1 || count > 0xfffff)
{
return null;
}

var dir = ReadIndexV2(file, count, file.View.ReadInt32(file.MaxOffset - 0x8));

return new ArcFile(file, this, dir);
}

private List<Entry> ReadIndex (ArcView file, int count, int name_length)
private List<Entry> ReadIndexV1 (ArcView file, int count, int name_length)
{
long index_offset = 4;
uint index_size = (uint)((name_length + 4) * count);
Expand Down Expand Up @@ -98,5 +124,36 @@ private List<Entry> ReadIndex (ArcView file, int count, int name_length)
}
return dir;
}

private List<Entry> ReadIndexV2(ArcView file, int count, long start_offset)
{
uint max_index_size = (uint)(count * 0x4C);
long index_offset = start_offset;
var dir = new List<Entry> (count);

file.View.Reserve(start_offset, max_index_size);

for (int i = 0; i < count; i++)
{
int name_length = file.View.ReadByte(index_offset);
index_offset++;

string name = file.View.ReadString(index_offset, (uint)name_length);
index_offset += name_length;

uint entry_size = file.View.ReadUInt32(index_offset);
index_offset += 8;

long entry_offset = file.View.ReadInt32(index_offset);
index_offset += 4;

var entry = FormatCatalog.Instance.Create<Entry>(name);
entry.Size = entry_size;
entry.Offset = entry_offset;
dir.Add(entry);
}

return dir;
}
}
}