public static void Dechunk(string finalName, BinaryReader reader, int size)
{
using (BinaryWriter writer = new BinaryWriter(File.Open(finalName, FileMode.Create)))
{
using (BinaryReader chunkedFileReader = new BinaryReader(new MemoryStream(reader.ReadBytes(size))))
{
while (chunkedFileReader.BaseStream.Position < size)
{
UInt32 uncompressedSize = chunkedFileReader.ReadUInt32BE();
byte compressionType = chunkedFileReader.ReadByte();
byte compressionSignature = chunkedFileReader.ReadByte();
UInt16 compressedSize = chunkedFileReader.ReadUInt16BE();
if (compressionType == 0x00)
{
writer.Write(chunkedFileReader.ReadBytes((int)uncompressedSize));
}
else if (compressionType == 0x09)
{
byte[] input = chunkedFileReader.ReadBytes(compressedSize);
byte[] output = new byte[(int)uncompressedSize];
int result = LZ4Handler.LZ4_decompress_safe(input, output, input.Length, (int)uncompressedSize);
if (result != uncompressedSize)
{
throw new ArgumentException();
}
writer.Write(output);
}
else if (compressionType == 0x0F)
{
ZstdNet.Decompressor decompressor = new ZstdNet.Decompressor();
byte[] input = chunkedFileReader.ReadBytes(compressedSize);
byte[] output = decompressor.Unwrap(input);
writer.Write(output);
}
}
}
}
}
public int Compress(byte[] inBuffer, byte[] outBuffer, int uncompressedSize)
{
return(LZ4Handler.LZ4_compress(inBuffer, outBuffer, uncompressedSize));
}
