Ejemplo n.º 1
0
        public static AssetHeader ReadAssetHeader(BinaryReader reader)
        {
            AssetHeader header = new AssetHeader();

            header.compression       = (AssetCompression)reader.ReadInt32();
            header.sizeInBytes       = reader.ReadInt64();
            header.uncompressedBytes = reader.ReadInt64();
            header.assetName         = reader.ReadUtf8String();
            string typeName = reader.ReadUtf8String();

            header.assetType = TypeFinder.FindType(typeName);
            return(header);
        }
Ejemplo n.º 2
0
        private void ReadHeaders()
        {
            var stream = GetThreadStream();

            stream.Seek(0, SeekOrigin.Begin);

            BinaryReader reader = new BinaryReader(stream, Encoding.UTF8, true);

            int numberOfAssets = reader.ReadInt32();             // Read number of assets

            for (int i = 0; i < numberOfAssets; i++)
            {
                AssetHeader header        = AssetHeader.ReadAssetHeader(reader);
                long        assetPosition = stream.Position;
                assetPositions.Add(header.assetName, assetPosition);
                assetHeaders.Add(header.assetName, header);
                stream.Seek(header.sizeInBytes, SeekOrigin.Current);
            }
        }
Ejemplo n.º 3
0
        public Stream GetUncompressedFileStream(string assetName)
        {
            if (!assetHeaders.ContainsKey(assetName))
            {
                throw new ArgumentException($"No asset found with name {assetName} in package {assetFile.Name}");
            }

            AssetHeader header   = assetHeaders[assetName];
            long        position = assetPositions[assetName];
            FileStream  fs       = GetThreadStream();

            fs.Seek(position, SeekOrigin.Begin);

            var source = new NonClosingFileStreamReaderWrapper(fs, header.sizeInBytes);

            //var source = new DeflateStream(stream, CompressionMode.Decompress, true);

            //var output = new byte[header.uncompressedBytes];
            //MemoryStream outStream = new MemoryStream(output);
            //source.CopyTo(outStream);

            switch (header.compression)
            {
            case AssetCompression.NotCompressed:
                return(source);

                break;

            case AssetCompression.Deflate:
                return(new DeflateStream(source, CompressionMode.Decompress, true));

                break;

            case AssetCompression.Gzip:
                return(new GZipStream(source, CompressionMode.Decompress, true));

                break;

            default:
                throw new ArgumentOutOfRangeException();
            }
        }