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- [Core] Update file foramt.

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Razmoth
2024-02-11 19:35:40 +04:00
parent 2e268e6283
commit e1d7f5301a
1 changed files with 60 additions and 30 deletions
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58
AssetStudio/BlbFile.cs
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@@ -8,8 +8,6 @@ namespace AssetStudio
{
public class BlbFile
{
private const uint DefaultUncompressedSize = 0x20000;
private List<BundleFile.StorageBlock> m_BlocksInfo;
private List<BundleFile.Node> m_DirectoryInfo;
@@ -34,7 +32,7 @@ namespace AssetStudio
version = 6,
unityVersion = "5.x.x",
unityRevision = "2017.4.30f1",
flags = (ArchiveFlags)0x43
flags = 0
};
m_Header.compressedBlocksInfoSize = size;
m_Header.uncompressedBlocksInfoSize = size;
@@ -57,9 +55,10 @@ namespace AssetStudio
var lastUncompressedSize = reader.ReadUInt32();
reader.Position += 4;
var offset = reader.ReadInt64();
var blobOffset = reader.ReadInt32();
var blobSize = reader.ReadUInt32();
var compressionType = (CompressionType)reader.ReadByte();
var serializedFileVersion = (SerializedFileFormatVersion)reader.ReadByte();
var uncompressedSize = (uint)1 << reader.ReadByte();
reader.AlignStream();
var blocksInfoCount = reader.ReadInt32();
@@ -67,7 +66,7 @@ namespace AssetStudio
var blocksInfoOffset = reader.Position + reader.ReadInt64();
var nodesInfoOffset = reader.Position + reader.ReadInt64();
var bundleInfoOffset = reader.Position + reader.ReadInt64();
var flagInfoOffset = reader.Position + reader.ReadInt64();
reader.Position = blocksInfoOffset;
m_BlocksInfo = new List<BundleFile.StorageBlock>();
@@ -77,8 +76,8 @@ namespace AssetStudio
m_BlocksInfo.Add(new BundleFile.StorageBlock
{
compressedSize = reader.ReadUInt32(),
uncompressedSize = i == blocksInfoCount - 1 ? lastUncompressedSize : DefaultUncompressedSize,
flags = (StorageBlockFlags)0x43
uncompressedSize = i == blocksInfoCount - 1 ? lastUncompressedSize : uncompressedSize,
flags = (StorageBlockFlags)compressionType
});
Logger.Verbose($"Block {i} Info: {m_BlocksInfo[i]}");
@@ -95,9 +94,19 @@ namespace AssetStudio
size = reader.ReadInt32()
});
var pos = reader.Position;
reader.Position = flagInfoOffset;
var flag = reader.ReadUInt32();
if (i >= 0x20)
{
flag = reader.ReadUInt32();
}
m_DirectoryInfo[i].flags = (uint)(flag & (1 << i)) * 4;
reader.Position = pos;
var pathOffset = reader.Position + reader.ReadInt64();
var pos = reader.Position;
pos = reader.Position;
reader.Position = pathOffset;
m_DirectoryInfo[i].path = reader.ReadStringToNull();
reader.Position = pos;
@@ -118,35 +127,56 @@ namespace AssetStudio
return blocksStream;
}
private void ReadBlocks(EndianBinaryReader reader, Stream blocksStream)
private void ReadBlocks(FileReader reader, Stream blocksStream)
{
foreach (var blockInfo in m_BlocksInfo)
{
var compressionType = (CompressionType)(blockInfo.flags & StorageBlockFlags.CompressionTypeMask);
Logger.Verbose($"Block compression type {compressionType}");
switch (compressionType) //kStorageBlockCompressionTypeMask
{
case CompressionType.None: //None
{
reader.BaseStream.CopyTo(blocksStream, blockInfo.compressedSize);
break;
}
case CompressionType.Lzma: //LZMA
{
SevenZipHelper.StreamDecompress(reader.BaseStream, blocksStream, blockInfo.compressedSize, blockInfo.uncompressedSize);
break;
}
case CompressionType.Lz4: //LZ4
case CompressionType.Lz4HC: //LZ4HC
{
var compressedSize = (int)blockInfo.compressedSize;
var uncompressedSize = (int)blockInfo.uncompressedSize;
var compressedBytes = ArrayPool<byte>.Shared.Rent(compressedSize);
var uncompressedBytes = ArrayPool<byte>.Shared.Rent(uncompressedSize);
try
{
reader.Read(compressedBytes, 0, compressedSize);
var compressedBytesSpan = compressedBytes.AsSpan(0, compressedSize);
var uncompressedBytesSpan = uncompressedBytes.AsSpan(0, uncompressedSize);
reader.Read(compressedBytesSpan);
var numWrite = LZ4.Decompress(compressedBytesSpan, uncompressedBytesSpan);
if (numWrite != uncompressedSize)
{
throw new IOException($"Lz4 decompression error, write {numWrite} bytes but expected {uncompressedSize} bytes");
}
blocksStream.Write(uncompressedBytes, 0, uncompressedSize);
blocksStream.Write(uncompressedBytesSpan);
}
finally
{
ArrayPool<byte>.Shared.Return(compressedBytes, true);
ArrayPool<byte>.Shared.Return(uncompressedBytes, true);
}
break;
}
default:
throw new IOException($"Unsupported compression type {compressionType}");
}
}
}