private SmartStream ReadPre530Metadata(BundleFileReader reader)
{
switch (Header.Type)
{
case BundleType.UnityRaw:
{
Metadata.Read(reader);
return(m_stream.CreateReference());
}
case BundleType.UnityWeb:
{
// read only last chunk. wtf?
ChunkInfo chunkInfo = Header.ChunkInfos[Header.ChunkInfos.Count - 1];
using (SmartStream stream = SmartStream.CreateMemory(new byte[chunkInfo.DecompressedSize]))
{
SevenZipHelper.DecompressLZMASizeStream(reader.BaseStream, chunkInfo.CompressedSize, stream);
using (BundleFileReader decompressReader = new BundleFileReader(stream, reader.EndianType, reader.Generation))
{
Metadata.Read(decompressReader);
}
return(stream.CreateReference());
}
}
default:
throw new NotSupportedException($"Bundle type {Header.Type} isn't supported before 530 generation");
}
}
private void ReadPre530Metadata(EndianReader reader)
{
switch (Header.Type)
{
case BundleType.UnityRaw:
{
Metadata = new BundleMetadata(m_filePath);
Metadata.ReadPre530(reader);
}
break;
case BundleType.UnityWeb:
case BundleType.HexFA:
{
// read only last chunk. wtf?
ChunkInfo chunkInfo = Header.ChunkInfos[Header.ChunkInfos.Count - 1];
using (SmartStream stream = SmartStream.CreateMemory(new byte[chunkInfo.DecompressedSize]))
{
SevenZipHelper.DecompressLZMASizeStream(reader.BaseStream, chunkInfo.CompressedSize, stream);
Metadata = new BundleMetadata(m_filePath);
using (EndianReader decompressReader = new EndianReader(stream, EndianType.BigEndian))
{
Metadata.ReadPre530(decompressReader);
}
}
}
break;
default:
throw new NotSupportedException($"Bundle type {Header.Type} isn't supported before 530 generation");
}
}
private void ParseBundleFormat(EndianStream stream)
{
int bundleSize = stream.ReadInt32();
short unused16 = stream.ReadInt16();
int offset = stream.ReadInt16();
int unused32 = stream.ReadInt32();
int lzmaChunkCount = stream.ReadInt32();
if (lzmaChunkCount != 1)
{
// see original project, it support only 1 chunk
throw new Exception($"Found lzma with {lzmaChunkCount} chunks");
}
MemoryStream memStream = IsBundlePacked ? new MemoryStream() : null;
for (int i = 0; i < lzmaChunkCount; i++)
{
int lzmaSize = stream.ReadInt32();
int decompressedSize = stream.ReadInt32();
stream.BaseStream.Position = offset;
switch (Signature)
{
case BundleSignature.UnityRaw:
ParseBundleFiles(stream);
break;
case BundleSignature.UnityWeb:
case BundleSignature.HexFA:
memStream.Position = 0;
SevenZipHelper.DecompressLZMASizeStream(stream.BaseStream, lzmaSize, memStream);
using (EndianStream decompressStream = new EndianStream(memStream, EndianType.BigEndian))
{
ParseBundleFiles(decompressStream);
}
break;
default:
throw new Exception($"Unsupported bundle signature '{Signature}'");
}
offset += lzmaSize;
}
}
private void ReadPre530Metadata(EndianStream stream, bool isClosable)
{
switch (Header.Type)
{
case BundleType.UnityRaw:
{
if (Header.ChunkInfos.Count > 1)
{
throw new NotSupportedException($"Raw data with several chunks {Header.ChunkInfos.Count} isn't supported");
}
BundleMetadata metadata = new BundleMetadata(stream.BaseStream, m_filePath, isClosable);
metadata.ReadPre530(stream);
Metadatas = new BundleMetadata[] { metadata };
}
break;
case BundleType.UnityWeb:
case BundleType.HexFA:
{
BundleMetadata[] metadatas = new BundleMetadata[Header.ChunkInfos.Count];
for (int i = 0; i < Header.ChunkInfos.Count; i++)
{
ChunkInfo chunkInfo = Header.ChunkInfos[i];
MemoryStream memStream = new MemoryStream(new byte[chunkInfo.DecompressedSize]);
SevenZipHelper.DecompressLZMASizeStream(stream.BaseStream, chunkInfo.CompressedSize, memStream);
BundleMetadata metadata = new BundleMetadata(memStream, m_filePath, true);
using (EndianStream decompressStream = new EndianStream(memStream, EndianType.BigEndian))
{
metadata.ReadPre530(decompressStream);
}
metadatas[i] = metadata;
}
Metadatas = metadatas;
if (isClosable)
{
stream.Dispose();
}
}
break;
default:
throw new NotSupportedException($"Bundle type {Header.Type} isn't supported before 530 generation");
}
}
private SmartStream Read530Metadata(BundleFileReader reader)
{
if (Header.Flags.IsMetadataAtTheEnd())
{
reader.BaseStream.Position = Header.BundleSize - Header.MetadataCompressedSize;
}
BundleCompressType metaCompression = Header.Flags.GetCompression();
switch (metaCompression)
{
case BundleCompressType.None:
{
Metadata.Read(reader);
long expectedPosition = Header.Flags.IsMetadataAtTheEnd() ? Header.BundleSize : Header.HeaderSize + Header.MetadataDecompressedSize;
if (reader.BaseStream.Position != expectedPosition)
{
throw new Exception($"Read {reader.BaseStream.Position - Header.HeaderSize} but expected {Header.MetadataDecompressedSize}");
}
}
break;
case BundleCompressType.LZMA:
{
using (MemoryStream stream = new MemoryStream(new byte[Header.MetadataDecompressedSize]))
{
SevenZipHelper.DecompressLZMASizeStream(reader.BaseStream, Header.MetadataCompressedSize, stream);
using (BundleFileReader decompressReader = new BundleFileReader(stream, reader.EndianType, reader.Generation))
{
Metadata.Read(decompressReader);
}
if (stream.Position != Header.MetadataDecompressedSize)
{
throw new Exception($"Read {stream.Position} but expected {Header.MetadataDecompressedSize}");
}
}
}
break;
case BundleCompressType.LZ4:
case BundleCompressType.LZ4HZ:
{
using (MemoryStream stream = new MemoryStream(new byte[Header.MetadataDecompressedSize]))
{
using (Lz4DecodeStream decodeStream = new Lz4DecodeStream(reader.BaseStream, Header.MetadataCompressedSize))
{
long read = decodeStream.Read(stream, Header.MetadataDecompressedSize);
if (read != Header.MetadataDecompressedSize || decodeStream.IsDataLeft)
{
throw new Exception($"Read {read} but expected {Header.MetadataDecompressedSize}");
}
}
stream.Position = 0;
using (BundleFileReader decompressReader = new BundleFileReader(stream, reader.EndianType, reader.Generation))
{
Metadata.Read(decompressReader);
}
if (stream.Position != Header.MetadataDecompressedSize)
{
throw new Exception($"Read {stream.Position} but expected {Header.MetadataDecompressedSize}");
}
}
}
break;
default:
throw new NotSupportedException($"Bundle compression '{metaCompression}' isn't supported");
}
return(m_stream.CreateReference());
}
private void Read530Metadata(EndianStream stream, bool isClosable, long basePosition)
{
long dataPosition = stream.BaseStream.Position;
if (Header.Flags.IsMetadataAtTheEnd())
{
stream.BaseStream.Position = basePosition + Header.BundleSize - Header.MetadataCompressedSize;
}
else
{
dataPosition += Header.MetadataCompressedSize;
}
BlockInfo[] blockInfos;
BundleMetadata metadata;
BundleCompressType metaCompress = Header.Flags.GetCompression();
switch (metaCompress)
{
case BundleCompressType.None:
{
long metaPosition = stream.BaseStream.Position;
// unknown 0x10
stream.BaseStream.Position += 0x10;
blockInfos = stream.ReadArray <BlockInfo>();
metadata = new BundleMetadata(stream.BaseStream, m_filePath, isClosable);
metadata.Read530(stream, dataPosition);
if (stream.BaseStream.Position != metaPosition + Header.MetadataDecompressedSize)
{
throw new Exception($"Read {stream.BaseStream.Position - metaPosition} but expected {Header.MetadataDecompressedSize}");
}
break;
}
case BundleCompressType.LZMA:
{
using (MemoryStream memStream = new MemoryStream(Header.MetadataDecompressedSize))
{
SevenZipHelper.DecompressLZMASizeStream(stream.BaseStream, Header.MetadataCompressedSize, memStream);
memStream.Position = 0;
using (EndianStream metadataStream = new EndianStream(memStream, EndianType.BigEndian))
{
// unknown 0x10
metadataStream.BaseStream.Position += 0x10;
blockInfos = metadataStream.ReadArray <BlockInfo>();
metadata = new BundleMetadata(stream.BaseStream, m_filePath, isClosable);
metadata.Read530(metadataStream, dataPosition);
if (memStream.Position != memStream.Length)
{
throw new Exception($"Read {memStream.Position} but expected {memStream.Length}");
}
}
}
break;
}
case BundleCompressType.LZ4:
case BundleCompressType.LZ4HZ:
{
using (MemoryStream memStream = new MemoryStream(Header.MetadataDecompressedSize))
{
using (Lz4Stream lzStream = new Lz4Stream(stream.BaseStream, Header.MetadataCompressedSize))
{
long read = lzStream.Read(memStream, Header.MetadataDecompressedSize);
memStream.Position = 0;
if (read != Header.MetadataDecompressedSize)
{
throw new Exception($"Read {read} but expected {Header.MetadataDecompressedSize}");
}
}
using (EndianStream metadataStream = new EndianStream(memStream, EndianType.BigEndian))
{
// unknown 0x10
metadataStream.BaseStream.Position += 0x10;
blockInfos = metadataStream.ReadArray <BlockInfo>();
metadata = new BundleMetadata(stream.BaseStream, m_filePath, isClosable);
metadata.Read530(metadataStream, dataPosition);
if (memStream.Position != memStream.Length)
{
throw new Exception($"Read {memStream.Position} but expected {memStream.Length}");
}
}
}
break;
}
default:
throw new NotSupportedException($"Bundle compression '{metaCompress}' isn't supported");
}
stream.BaseStream.Position = dataPosition;
Read530Blocks(stream, isClosable, blockInfos, metadata);
}
private void Read530Metadata(EndianReader reader, long basePosition)
{
SmartStream bundleStream = (SmartStream)reader.BaseStream;
long dataPosition = bundleStream.Position;
if (Header.Flags.IsMetadataAtTheEnd())
{
bundleStream.Position = basePosition + Header.BundleSize - Header.MetadataCompressedSize;
}
else
{
dataPosition += Header.MetadataCompressedSize;
}
BlockInfo[] blockInfos;
BundleCompressType metaCompression = Header.Flags.GetCompression();
switch (metaCompression)
{
case BundleCompressType.None:
{
long metaPosition = bundleStream.Position;
// unknown 0x10
bundleStream.Position += 0x10;
blockInfos = reader.ReadArray <BlockInfo>();
Metadata = new BundleMetadata(m_filePath);
Metadata.Read530(reader, bundleStream);
if (bundleStream.Position != metaPosition + Header.MetadataDecompressedSize)
{
throw new Exception($"Read {bundleStream.Position - metaPosition} but expected {Header.MetadataDecompressedSize}");
}
break;
}
case BundleCompressType.LZMA:
{
using (MemoryStream metaStream = new MemoryStream(new byte[Header.MetadataDecompressedSize]))
{
SevenZipHelper.DecompressLZMASizeStream(bundleStream, Header.MetadataCompressedSize, metaStream);
using (EndianReader metaReader = new EndianReader(metaStream, EndianType.BigEndian))
{
// unknown 0x10
metaReader.BaseStream.Position += 0x10;
blockInfos = metaReader.ReadArray <BlockInfo>();
Metadata = new BundleMetadata(m_filePath);
Metadata.Read530(metaReader, bundleStream);
}
if (metaStream.Position != metaStream.Length)
{
throw new Exception($"Read {metaStream.Position} but expected {metaStream.Length}");
}
}
break;
}
case BundleCompressType.LZ4:
case BundleCompressType.LZ4HZ:
{
using (MemoryStream metaStream = new MemoryStream(new byte[Header.MetadataDecompressedSize]))
{
using (Lz4Stream lzStream = new Lz4Stream(bundleStream, Header.MetadataCompressedSize))
{
long read = lzStream.Read(metaStream, Header.MetadataDecompressedSize);
metaStream.Position = 0;
if (read != Header.MetadataDecompressedSize)
{
throw new Exception($"Read {read} but expected {Header.MetadataDecompressedSize}");
}
}
using (EndianReader metaReader = new EndianReader(metaStream, EndianType.BigEndian))
{
// unknown 0x10
metaReader.BaseStream.Position += 0x10;
blockInfos = metaReader.ReadArray <BlockInfo>();
Metadata = new BundleMetadata(m_filePath);
Metadata.Read530(metaReader, bundleStream);
}
if (metaStream.Position != metaStream.Length)
{
throw new Exception($"Read {metaStream.Position} but expected {metaStream.Length}");
}
}
break;
}
default:
throw new NotSupportedException($"Bundle compression '{metaCompression}' isn't supported");
}
bundleStream.Position = dataPosition;
Read530Blocks(bundleStream, blockInfos);
}
