public void Write(Resource resource) { Compression = CompressionMethod.LZ4; CompressionLevel = CompressionLevel.MaxCompression; using (this.Writer = new BinaryWriter(Stream)) using (this.NodeStream = new MemoryStream()) using (this.NodeWriter = new BinaryWriter(NodeStream)) using (this.AttributeStream = new MemoryStream()) using (this.AttributeWriter = new BinaryWriter(AttributeStream)) using (this.ValueStream = new MemoryStream()) using (this.ValueWriter = new BinaryWriter(ValueStream)) { NextNodeIndex = 0; NextAttributeIndex = 0; NodeIndices = new Dictionary<Node, int>(); StringHashMap = new List<List<string>>(StringHashMapSize); while (StringHashMap.Count < StringHashMapSize) { StringHashMap.Add(new List<string>()); } WriteRegions(resource); byte[] stringBuffer = null; using (var stringStream = new MemoryStream()) using (var stringWriter = new BinaryWriter(stringStream)) { WriteStaticStrings(stringWriter); stringBuffer = stringStream.ToArray(); } var nodeBuffer = NodeStream.ToArray(); var attributeBuffer = AttributeStream.ToArray(); var valueBuffer = ValueStream.ToArray(); var header = new Header(); header.Magic = BitConverter.ToUInt32(Header.Signature, 0); header.Version = Version; header.EngineVersion = (resource.Metadata.majorVersion << 24) | (resource.Metadata.minorVersion << 16) | (resource.Metadata.revision << 8) | resource.Metadata.buildNumber; bool chunked = (header.Version >= FileVersion.VerChunkedCompress); byte[] stringsCompressed = BinUtils.Compress(stringBuffer, Compression, CompressionLevel); byte[] nodesCompressed = BinUtils.Compress(nodeBuffer, Compression, CompressionLevel, chunked); byte[] attributesCompressed = BinUtils.Compress(attributeBuffer, Compression, CompressionLevel, chunked); byte[] valuesCompressed = BinUtils.Compress(valueBuffer, Compression, CompressionLevel, chunked); header.StringsUncompressedSize = (UInt32)stringBuffer.Length; header.StringsSizeOnDisk = (UInt32)stringsCompressed.Length; header.NodesUncompressedSize = (UInt32)nodeBuffer.Length; header.NodesSizeOnDisk = (UInt32)nodesCompressed.Length; header.AttributesUncompressedSize = (UInt32)attributeBuffer.Length; header.AttributesSizeOnDisk = (UInt32)attributesCompressed.Length; header.ValuesUncompressedSize = (UInt32)valueBuffer.Length; header.ValuesSizeOnDisk = (UInt32)valuesCompressed.Length; header.CompressionFlags = BinUtils.MakeCompressionFlags(Compression, CompressionLevel); header.Unknown2 = 0; header.Unknown3 = 0; header.Extended = ExtendedNodes ? 1u : 0u; BinUtils.WriteStruct<Header>(Writer, ref header); Writer.Write(stringsCompressed, 0, stringsCompressed.Length); Writer.Write(nodesCompressed, 0, nodesCompressed.Length); Writer.Write(attributesCompressed, 0, attributesCompressed.Length); Writer.Write(valuesCompressed, 0, valuesCompressed.Length); } }
private byte[] Decompress(BinaryReader reader, uint compressedSize, uint uncompressedSize, Header header) { bool chunked = (header.Version >= FileVersion.VerChunkedCompress); byte[] compressed = reader.ReadBytes((int)compressedSize); return BinUtils.Decompress(compressed, (int)uncompressedSize, header.CompressionFlags, chunked); }