public void Disassemble(Action <ChunkItem> callback = null)
{
void HandleChunk(ChunkItem chunk)
{
callback?.Invoke(chunk);
Chunks.Add(chunk);
}
if (Metadata.Codec == CodecKind.FGDM ||
Metadata.Codec == CodecKind.FGDC)
{
if (ChunkItem.Read(_input) is FileVersionChunk version &&
ChunkItem.Read(_input) is FileCompressionTypesChunk compressionTypes &&
ChunkItem.Read(_input) is AfterburnerMapChunk afterburnerMap &&
ChunkItem.Read(_input) is FGEIChunk fgei)
{
var ilsChunk = fgei.ReadInitialLoadSegment(afterburnerMap.Entries[0]);
fgei.ReadChunks(afterburnerMap.Entries, HandleChunk);
ilsChunk.ReadChunks(afterburnerMap.Entries, HandleChunk);
}
}
else if (Metadata.Codec == CodecKind.MV93)
{
var imapChunk = ChunkItem.Read(_input) as InitialMapChunk;
Version = imapChunk.Version;
foreach (int offset in imapChunk.MemoryMapOffsets)
{
_input.Position = offset;
if (ChunkItem.Read(_input) is MemoryMapChunk mmapChunk)
{
foreach (ChunkEntry entry in mmapChunk.Entries)
{
if (entry.Flags.HasFlag(ChunkEntryFlags.Ignore))
{
HandleChunk(new UnknownChunk(_input, entry.Header)); //TODO:
continue;
}
_input.Position = entry.Offset;
ChunkItem chunk = ChunkItem.Read(_input);
chunk.Header.Id = entry.Header.Id;
HandleChunk(chunk);
}
}
}
}
}
public void Disassemble()
{
var input = new ShockwaveReader(_input.Span, Metadata.IsBigEndian);
input.Advance(Metadata.Header.GetBodySize() + Metadata.GetBodySize());
if (Metadata.Codec == CodecKind.FGDM ||
Metadata.Codec == CodecKind.FGDC)
{
if (ChunkItem.Read(ref input) is FileVersionChunk version &&
ChunkItem.Read(ref input) is FileCompressionTypesChunk compressionTypes &&
ChunkItem.Read(ref input) is AfterburnerMapChunk afterburnerMap &&
ChunkItem.Read(ref input) is FileGzipEmbeddedImageChunk fgei)
{
Chunks = fgei.ReadChunks(ref input, afterburnerMap.Entries);
}
}
else if (Metadata.Codec == CodecKind.MV93)
{
var imapChunk = ChunkItem.Read(ref input) as InitialMapChunk;
Version = imapChunk.Version;
foreach (int offset in imapChunk.MemoryMapOffsets)
{
input.Position = offset;
if (ChunkItem.Read(ref input) is MemoryMapChunk mmapChunk)
{
foreach (ChunkEntry entry in mmapChunk.Entries)
{
if (entry.Header.Kind == ChunkKind.RIFX)
{
continue; //TODO: HACK
}
if (entry.Flags.HasFlag(ChunkEntryFlags.Ignore))
{
Chunks.Add(entry.Id, new UnknownChunk(ref input, entry.Header));
continue;
}
input.Position = entry.Offset;
Chunks.Add(entry.Id, ChunkItem.Read(ref input));
}
}
}
}
//TODO:
_input = null;
}
public unsafe ChunkItem ReadCompressedChunk(AfterBurnerMapEntry entry)
{
Span <byte> decompressedData = entry.DecompressedLength <= 1024 ?
stackalloc byte[entry.DecompressedLength] : new byte[entry.DecompressedLength];
fixed(byte *pBuffer = &_data.Slice(Position + 2)[0]) //Skip ZLib header
{
using var stream = new UnmanagedMemoryStream(pBuffer, entry.Length - 2);
using var deflateStream = new DeflateStream(stream, CompressionMode.Decompress);
deflateStream.Read(decompressedData);
}
Advance(entry.Length);
ShockwaveReader input = new ShockwaveReader(decompressedData, IsBigEndian);
return(ChunkItem.Read(ref input, entry.Header));
}