C# MemoryStream.WriteValueU32方法代码示例

        public byte[] ToArray()
        {
            MemoryStream buffer = new MemoryStream();
            buffer.WriteValueU32(firstVal);
            buffer.WriteValueS32(pccRef.Names.FindIndex(name => name == "None"));
            buffer.Seek(16, SeekOrigin.Begin);
            buffer.WriteValueU32(otherVal);
            buffer.WriteValueS32(enumTextureGroups.Count);
            foreach (ByteProp byteProp in enumTextureGroups)
            {
                buffer.WriteValueS32(pccRef.Names.FindIndex(name => name == byteProp.name));
                buffer.WriteValueS32(byteProp.value);
            }

            return buffer.ToArray();
        }

        /*
         * Name function: Compress
         * Purpose: compress a part of the byte array into a Zlib Block
         * Input: - buffer: byte array
         *        - offset: starting offset inside the array
         *        - count: num of bytes to compress starting from the offset
         * Output: compressed byte array block, the structure is:
         *         - magic word
         *         - max segment size
         *         - total compressed size
         *         - total uncompressed size
         *         - segment list
         *         - compressed data list
         */
        public static byte[] Compress(byte[] buffer, int offset, int count)
        {
            if(buffer == null)
                throw new ArgumentNullException();
            if (count < 0)
                throw new FormatException();
            if (offset + count > buffer.Length)
                throw new IndexOutOfRangeException();

            MemoryStream headBlock = new MemoryStream();
            MemoryStream dataBlock = new MemoryStream();
            DeflaterOutputStream zipStream;

            int numSeg = (int)Math.Ceiling((double)count / (double)maxSegmentSize);

            headBlock.WriteValueU32(magic);
            headBlock.WriteValueU32(maxSegmentSize);
            headBlock.WriteValueU32(0x0);            //total compressed size, still to calculate
            headBlock.WriteValueS32(count);          //total uncompressed size

            for (int i = count; i > 0; i -= (int)maxSegmentSize)
            {
                int copyBytes = Math.Min(i, (int)maxSegmentSize);
                uint precCompSize = (uint)dataBlock.Length;
                zipStream = new DeflaterOutputStream(dataBlock);
                zipStream.Write(buffer, offset + (count - i), copyBytes);
                zipStream.Flush();
                zipStream.Finish();
                headBlock.WriteValueU32((uint)dataBlock.Length - precCompSize); //compressed segment size
                headBlock.WriteValueS32(copyBytes); //uncompressed segment size
                //Console.WriteLine("  Segment size: {0}, total read: {1}, compr size: {2}", maxSegmentSize, copyBytes, (uint)dataBlock.Length - precCompSize);
            }

            headBlock.Seek(8, SeekOrigin.Begin);
            headBlock.WriteValueS32((int)dataBlock.Length); // total compressed size

            byte[] finalBlock = new byte[headBlock.Length + dataBlock.Length];
            Buffer.BlockCopy(headBlock.ToArray(), 0, finalBlock, 0, (int)headBlock.Length);
            Buffer.BlockCopy(dataBlock.ToArray(), 0, finalBlock, (int)headBlock.Length, (int)dataBlock.Length);
            headBlock.Close();
            dataBlock.Close();

            return finalBlock;
        }

        void SetData(UInt32 Length, byte opCode, byte Flags)
        {
            this.Length = Length;
            this.opCode = opCode;
            this.Flags = Flags;

            this.Data = new byte[6];

            using (var stream = new MemoryStream(this.Data))
            {
                stream.WriteValueU32(this.Length, false);
                stream.WriteValueU8(this.opCode);
                stream.WriteValueU8(this.Flags);

                this.Data = stream.ToArray();
                stream.Flush();
            }
        }

        /// <summary>
        /// Block headers are sent in a headers packet in response to a getheaders message.
        /// </summary>
        /// <remarks>
        /// https://en.bitcoin.it/wiki/Protocol_specification#Block_Headers
        /// </remarks>
        /// <example>
        /// nodejs: https://github.com/zone117x/node-stratum-pool/blob/master/lib/blockTemplate.js#L85
        /// </example>
        /// <param name="job"></param>
        /// <param name="merkleRoot"></param>
        /// <param name="nTime"></param>
        /// <param name="nonce"></param>
        /// <returns></returns>
        public static byte[] SerializeHeader(IJob job, byte[] merkleRoot, UInt32 nTime, UInt32 nonce)
        {
            byte[] result;

            using (var stream = new MemoryStream())
            {
                stream.WriteValueU32(nonce.BigEndian());
                stream.WriteValueU32(Convert.ToUInt32(job.EncodedDifficulty, 16).BigEndian());
                stream.WriteValueU32(nTime.BigEndian());
                stream.WriteBytes(merkleRoot);
                stream.WriteBytes(job.PreviousBlockHash.HexToByteArray());
                stream.WriteValueU32(job.BlockTemplate.Version.BigEndian());

                result = stream.ToArray();
                result = result.ReverseBytes();
            }

            return result;
        }

        public byte[] ToArray(int pccExportDataOffset)
        {
            MemoryStream buffer = new MemoryStream();
            buffer.Write(headerData, 0, headerData.Length);
            foreach (KeyValuePair<string, PropertyReader.Property> kvp in properties)
            {
                PropertyReader.Property property = kvp.Value;

                // this is the part when I get rid of the LODGroup property!!!!!!!!!!!!!!!
                // the texture will use texturegroup_world as default texturegroup
                //if (kvp.Key == "LODGroup")
                //    continue;
                if (kvp.Key == "LODBias")
                    continue;
                if (kvp.Key == "InternalFormatLODBias")
                    continue;

                buffer.Write(property.raw, 0, property.raw.Length);
                if (kvp.Key == "UnpackMin")
                {
                    buffer.Write(property.raw, 0, property.raw.Length);
                    buffer.Write(property.raw, 0, property.raw.Length);
                }
            }
            buffer.WriteValueU32(numMipMaps);
            foreach (ImageInfo imgInfo in imgList)
            {
                buffer.WriteValueS32((int)imgInfo.storageType);
                buffer.WriteValueS32(imgInfo.uncSize);
                buffer.WriteValueS32(imgInfo.cprSize);
                if (imgInfo.storageType == storage.pccSto)
                {
                    buffer.WriteValueS32((int)(imgInfo.offset + pccExportDataOffset + dataOffset));
                    buffer.Write(imageData, imgInfo.offset, imgInfo.uncSize);
                }
                else
                    buffer.WriteValueS32(imgInfo.offset);
                buffer.WriteValueU32(imgInfo.imgSize.width);
                buffer.WriteValueU32(imgInfo.imgSize.height);
            }
            // Texture2D footer, 24 bytes size
            buffer.Write(imageData, imageData.Length-24, 24);
            return buffer.ToArray();
        }

        public static void Write(SFXSaveGameFile save, Stream output)
        {
            if (save == null)
            {
                throw new ArgumentNullException("save");
            }

            if (output == null)
            {
                throw new ArgumentNullException("output");
            }

            using (var memory = new MemoryStream())
            {
                memory.WriteValueU32(save.Version, save._Endian);

                var writer = new Unreal.FileWriter(memory, save._Version, save._Endian);
                save.Serialize(writer);

                if (save._Version >= 27)
                {
                    memory.Position = 0;
                    uint checksum = 0;

                    var buffer = new byte[1024];
                    while (memory.Position < memory.Length)
                    {
                        int read = memory.Read(buffer, 0, 1024);
                        checksum = Crc32.Compute(buffer, 0, read, checksum);
                    }

                    save._Checksum = checksum;
                    memory.WriteValueU32(checksum, save._Endian);
                }

                memory.Position = 0;
                output.WriteFromStream(memory, memory.Length);
            }
        }

        public void Serialize(Stream output)
        {
            var endian = this.Endian;

            const uint headerSize = 32;
            output.WriteValueU32(0x42424947, endian);
            output.WriteValueU32(this.Version, endian);

            var keys = new List<string>() {""};

            int maxValueLength = 0;
            var blob = new StringBuilder();
            foreach (var file in this.Files)
            {
                keys.Add(file.Name);
                foreach (var section in file.Sections)
                {
                    keys.Add(section.Key);
                    foreach (var value in section.Value)
                    {
                        keys.Add(value.Key);
                        foreach (var item in value.Value)
                        {
                            if (item.Value != null)
                            {
                                blob.Append(item.Value + '\0');
                                maxValueLength = Math.Max(maxValueLength, item.Value.Length);
                            }
                        }
                    }
                }
            }

            var huffmanEncoder = new Huffman.Encoder();
            huffmanEncoder.Build(blob.ToString());

            keys = keys.Distinct().OrderBy(k => k.HashCrc32()).ToList();
            int maxKeyLength = keys.Max(k => k.Length);

            uint stringTableSize;
            using (var data = new MemoryStream())
            {
                data.Position = 4;
                data.WriteValueS32(keys.Count, endian);

                data.Position = 4 + 4 + (8 * keys.Count);
                var offsets = new List<KeyValuePair<uint, uint>>();
                foreach (var key in keys)
                {
                    var offset = (uint)data.Position;
                    data.WriteValueU16((ushort)key.Length, endian);
                    data.WriteString(key, Encoding.UTF8);
                    offsets.Add(new KeyValuePair<uint, uint>(key.HashCrc32(), offset));
                }

                data.Position = 8;
                foreach (var kv in offsets)
                {
                    data.WriteValueU32(kv.Key, endian);
                    data.WriteValueU32(kv.Value - 8, endian);
                }

                data.Position = 0;
                data.WriteValueU32((uint)data.Length, endian);

                data.Position = 0;
                stringTableSize = (uint)data.Length;

                output.Seek(headerSize, SeekOrigin.Begin);
                output.WriteFromStream(data, data.Length);
            }

            uint huffmanSize;
            using (var data = new MemoryStream())
            {
                var pairs = huffmanEncoder.GetPairs();
                data.WriteValueU16((ushort)pairs.Length, endian);
                foreach (var pair in pairs)
                {
                    data.WriteValueS32(pair.Left, endian);
                    data.WriteValueS32(pair.Right, endian);
                }

                data.Position = 0;
                huffmanSize = (uint)data.Length;

                output.Seek(headerSize + stringTableSize, SeekOrigin.Begin);
                output.WriteFromStream(data, data.Length);
            }

            var bits = new BitArray(huffmanEncoder.TotalBits);
            var bitOffset = 0;

            uint indexSize;
            using (var index = new MemoryStream())
            {
                var fileDataOffset = 2 + (this.Files.Count * 6);

                var files = new List<KeyValuePair<ushort, int>>();
                foreach (var file in this.Files.OrderBy(f => keys.IndexOf(f.Name)))
//.........这里部分代码省略.........

//.........这里部分代码省略.........
                        buffer.WriteValueS64(pcc.AddName(prop.TypeVal.ToString()));
                        buffer.WriteValueS32(prop.Size);
                        buffer.WriteValueS32(j);
                        buffer.WriteValueF32(prop.Value.FloatValue, Endian.Little);
                    }
                    continue;
                }

                buffer.WriteValueS64(pcc.AddName(prop.Name));
                if (prop.Name == "None")
                {
                    for (int j = 0; j < 12; j++)
                        buffer.WriteByte(0);
                }
                else
                {
                    buffer.WriteValueS64(pcc.AddName(prop.TypeVal.ToString()));
                    buffer.WriteValueS64(prop.Size);

                    switch (prop.TypeVal)
                    {
                        case SaltPropertyReader.Type.IntProperty:
                            buffer.WriteValueS32(prop.Value.IntValue);
                            break;
                        case SaltPropertyReader.Type.BoolProperty:
                            buffer.WriteValueS32(prop.Value.IntValue);
                            break;
                        case SaltPropertyReader.Type.NameProperty:
                            buffer.WriteValueS64(pcc.AddName(prop.Value.StringValue));
                            // Heff: Modified to handle name references.
                            //var index = pcc.AddName(prop.Value.StringValue);
                            //buffer.WriteValueS32(index);
                            //buffer.WriteValueS32(prop.Value.NameValue.count);
                            break;
                        case SaltPropertyReader.Type.StrProperty:
                            buffer.WriteValueS32(prop.Value.StringValue.Length + 1);
                            foreach (char c in prop.Value.StringValue)
                                buffer.WriteByte((byte)c);
                            buffer.WriteByte(0);
                            break;
                        case SaltPropertyReader.Type.StructProperty:
                            string strVal = prop.Value.StringValue;
                                if (prop.Name.ToLowerInvariant().Contains("guid"))
                                    strVal = "Guid";

                            buffer.WriteValueS64(pcc.AddName(strVal));
                            foreach (SaltPropertyReader.PropertyValue value in prop.Value.Array)
                                buffer.WriteValueS32(value.IntValue);
                            break;
                        case SaltPropertyReader.Type.ByteProperty:
                            buffer.WriteValueS32(pcc.AddName(prop.Value.StringValue));
                            buffer.WriteValueS32(pcc.AddName(prop.Value.String2));
                            break;
                        case SaltPropertyReader.Type.FloatProperty:
                            buffer.WriteValueF32(prop.Value.FloatValue, Endian.Little);
                            break;
                        default:
                            throw new FormatException("unknown property");
                    }
                }

            }

            buffer.WriteValueS32((int)buffer.Position + (int)pccExportDataOffset);

            //Remove empty textures
            List<ImageInfo> tempList = new List<ImageInfo>();
            foreach (ImageInfo imgInfo in privateimgList)
            {
                if (imgInfo.storageType != storage.empty)
                    tempList.Add(imgInfo);
            }
            privateimgList = tempList;
            numMipMaps = (uint)privateimgList.Count;

            buffer.WriteValueU32(numMipMaps);
            foreach (ImageInfo imgInfo in privateimgList)
            {
                buffer.WriteValueS32((int)imgInfo.storageType);
                buffer.WriteValueS32(imgInfo.uncSize);
                buffer.WriteValueS32(imgInfo.cprSize);
                if (imgInfo.storageType == storage.pccSto)
                {
                    buffer.WriteValueS32((int)(buffer.Position + pccExportDataOffset));
                    buffer.Write(imageData, imgInfo.offset, imgInfo.uncSize);
                }
                else
                    buffer.WriteValueS32(imgInfo.offset);
                if (imgInfo.imgSize.width < 4)
                    buffer.WriteValueU32(4);
                else
                    buffer.WriteValueU32(imgInfo.imgSize.width);
                if (imgInfo.imgSize.height < 4)
                    buffer.WriteValueU32(4);
                else
                    buffer.WriteValueU32(imgInfo.imgSize.height);
            }
            buffer.WriteBytes(footerData);
            return buffer.ToArray();
        }

        public void Create()
        {
            // create the first part.
            using (var stream = new MemoryStream())
            {
                stream.WriteValueU32(Version.LittleEndian()); // write version

                if(PoolConfig.Coin.Options.IsProofOfStakeHybrid) // if coin is a proof-of-stake coin
                    stream.WriteValueU32(BlockTemplate.CurTime); // include time-stamp in the transaction.

                // write transaction input.
                stream.WriteBytes(Serializers.VarInt(InputsCount));
                stream.WriteBytes(Inputs.First().PreviousOutput.Hash.Bytes);
                stream.WriteValueU32(Inputs.First().PreviousOutput.Index.LittleEndian());

                // write signature script lenght
                var signatureScriptLenght = (UInt32)(Inputs.First().SignatureScript.Initial.Length + ExtraNonce.ExtraNoncePlaceholder.Length + Inputs.First().SignatureScript.Final.Length);
                stream.WriteBytes(Serializers.VarInt(signatureScriptLenght).ToArray());

                stream.WriteBytes(Inputs.First().SignatureScript.Initial);

                Initial = stream.ToArray();
            }

            /*  The generation transaction must be split at the extranonce (which located in the transaction input
                scriptSig). Miners send us unique extranonces that we use to join the two parts in attempt to create
                a valid share and/or block. */

            // create the second part.
            using (var stream = new MemoryStream())
            {
                // transaction input
                stream.WriteBytes(Inputs.First().SignatureScript.Final);
                stream.WriteValueU32(Inputs.First().Sequence);
                // transaction inputs end here.

                // transaction output
                var outputBuffer = Outputs.GetBuffer();
                stream.WriteBytes(outputBuffer);
                // transaction output ends here.

                stream.WriteValueU32(LockTime.LittleEndian());

                if (PoolConfig.Coin.Options.TxMessageSupported)
                    stream.WriteBytes(TxMessage);

                Final = stream.ToArray();
            }
        }

        /// <summary>
        /// Encoded an integer to save space.
        /// </summary>
        /// <remarks>
        /// Integer can be encoded depending on the represented value to save space. Variable length integers always precede 
        /// an array/vector of a type of data that may vary in length. Longer numbers are encoded in little endian. 
        /// </remarks>
        /// <specification>https://en.bitcoin.it/wiki/Protocol_specification#Variable_length_integer</specification>
        /// <example>
        /// nodejs: https://c9.io/raistlinthewiz/bitcoin-coinbase-varint-nodejs
        /// </example>
        /// <returns></returns>
        public static byte[] VarInt(UInt32 value)
        {
            if (value < 0xfd)
                return new[] { (byte)value };

            byte[] result;

            using (var stream = new MemoryStream())
            {
                if (value < 0xffff)
                {
                    stream.WriteValueU8(0xfd);
                    stream.WriteValueU16(((UInt16)value).LittleEndian());
                }
                else if (value < 0xffffffff)
                {
                    stream.WriteValueU8(0xfe);
                    stream.WriteValueU32(value.LittleEndian());
                }
                else
                {
                    stream.WriteValueU8(0xff);
                    stream.WriteValueU16(((UInt16)value).LittleEndian());
                }
                result = stream.ToArray();
            }

            return result;
        }

        /// <summary>
        ///     decompress an entire ME3 pcc file into a new stream
        /// </summary>
        /// <param name="input">pcc file passed in stream format</param>
        /// <returns>a decompressed array of bytes</returns>
        public static MemoryStream DecompressME3(Stream input)
        {
            input.Seek(0, SeekOrigin.Begin);
            var magic = input.ReadValueU32(Endian.Little);
            if (magic != 0x9E2A83C1 &&
                magic.Swap() != 0x9E2A83C1)
            {
                throw new FormatException("not a pcc file");
            }
            var endian = magic == 0x9E2A83C1 ? Endian.Little : Endian.Big;

            var versionLo = input.ReadValueU16(endian);
            var versionHi = input.ReadValueU16(endian);

            if (versionLo != 684 &&
                versionHi != 194)
            {
                throw new FormatException("unsupported pcc version");
            }

            long headerSize = 8;

            input.Seek(4, SeekOrigin.Current);
            headerSize += 4;

            var folderNameLength = input.ReadValueS32(endian);
            headerSize += 4;

            var folderNameByteLength =
                folderNameLength >= 0 ? folderNameLength : (-folderNameLength * 2);
            input.Seek(folderNameByteLength, SeekOrigin.Current);
            headerSize += folderNameByteLength;

            var packageFlagsOffset = input.Position;
            var packageFlags = input.ReadValueU32(endian);
            headerSize += 4;

            if ((packageFlags & 0x02000000u) == 0)
            {
                throw new FormatException("pcc file is already decompressed");
            }

            if ((packageFlags & 8) != 0)
            {
                input.Seek(4, SeekOrigin.Current);
                headerSize += 4;
            }

            uint nameCount = input.ReadValueU32(endian);
            uint nameOffset = input.ReadValueU32(endian);

            input.Seek(52, SeekOrigin.Current);
            headerSize += 60;

            var generationsCount = input.ReadValueU32(endian);
            input.Seek(generationsCount * 12, SeekOrigin.Current);
            headerSize += generationsCount * 12;

            input.Seek(20, SeekOrigin.Current);
            headerSize += 24;

            var blockCount = input.ReadValueU32(endian);
            int headBlockOff = (int)input.Position;
            var afterBlockTableOffset = headBlockOff + (blockCount * 16);
            var indataOffset = afterBlockTableOffset + 8;
            byte[] buff;

            input.Seek(0, SeekOrigin.Begin);
            MemoryStream output = new MemoryStream();
            output.Seek(0, SeekOrigin.Begin);

            output.WriteFromStream(input, headerSize);
            output.WriteValueU32(0, endian); // block count

            input.Seek(afterBlockTableOffset, SeekOrigin.Begin);
            output.WriteFromStream(input, 8);

            //check if has extra name list (don't know it's usage...)
            if ((packageFlags & 0x10000000) != 0)
            {
                long curPos = output.Position;
                output.WriteFromStream(input, nameOffset - curPos);
            }

            //decompress blocks in parallel
            Task<byte[]>[] tasks = new Task<byte[]>[blockCount];
            uint[] uncompressedOffsets = new uint[blockCount];
            for (int i = 0; i < blockCount; i++)
            {
                input.Seek(headBlockOff, SeekOrigin.Begin);
                uncompressedOffsets[i] = input.ReadValueU32(endian);
                var uncompressedSize = input.ReadValueU32(endian);
                var compressedOffset = input.ReadValueU32(endian);
                var compressedSize = input.ReadValueU32(endian);
                headBlockOff = (int)input.Position;
//.........这里部分代码省略.........

        public void Create()
        {
            // create the first part.
            using (var stream = new MemoryStream())
            {
                stream.WriteValueU32(Version.LittleEndian()); // write version

                // for proof-of-stake coins we need here timestamp - https://github.com/zone117x/node-stratum-pool/blob/b24151729d77e0439e092fe3a1cdbba71ca5d12e/lib/transactions.js#L210

                // write transaction input.
                stream.WriteBytes(Serializers.VarInt(InputsCount));
                stream.WriteBytes(Inputs.First().PreviousOutput.Hash.Bytes);
                stream.WriteValueU32(Inputs.First().PreviousOutput.Index.LittleEndian());

                // write signature script lenght
                var signatureScriptLenght = (UInt32)(Inputs.First().SignatureScript.Initial.Length + ExtraNonce.ExtraNoncePlaceholder.Length + Inputs.First().SignatureScript.Final.Length);
                stream.WriteBytes(Serializers.VarInt(signatureScriptLenght).ToArray());

                stream.WriteBytes(Inputs.First().SignatureScript.Initial);

                Initial = stream.ToArray();
            }

            /*  The generation transaction must be split at the extranonce (which located in the transaction input
                scriptSig). Miners send us unique extranonces that we use to join the two parts in attempt to create
                a valid share and/or block. */

            // create the second part.
            using (var stream = new MemoryStream())
            {
                // transaction input
                stream.WriteBytes(Inputs.First().SignatureScript.Final);
                stream.WriteValueU32(Inputs.First().Sequence);
                // transaction inputs end here.

                // transaction output
                var outputBuffer = Outputs.GetBuffer();
                stream.WriteBytes(outputBuffer);
                // transaction output ends here.

                stream.WriteValueU32(LockTime.LittleEndian());

                if (SupportTxMessages)
                    stream.WriteBytes(Message);

                Final = stream.ToArray();
            }
        }

        public void Serialize(Stream output)
        {
            var saveGame = this.SaveGame;

            byte[] innerUncompressedBytes;
            using (var innerUncompressedData = new MemoryStream())
            {
                saveGame.Compose();
                try
                {
                    ProtoBuf.Serializer.Serialize(innerUncompressedData, saveGame);
                }
                finally
                {
                    saveGame.Decompose();
                }
                innerUncompressedData.Position = 0;
                innerUncompressedBytes = innerUncompressedData.ReadBytes((uint)innerUncompressedData.Length);
            }

            byte[] innerCompressedBytes;
            using (var innerCompressedData = new MemoryStream())
            {
                var endian = this.Endian;

                innerCompressedData.WriteValueS32(0, Endian.Big);
                innerCompressedData.WriteString("WSG");
                innerCompressedData.WriteValueU32(2, endian);
                innerCompressedData.WriteValueU32(CRC32.Hash(innerUncompressedBytes, 0, innerUncompressedBytes.Length),
                                                  endian); // crc32
                innerCompressedData.WriteValueS32(innerUncompressedBytes.Length, endian);

                var encoder = new Huffman.Encoder();
                encoder.Build(innerUncompressedBytes);
                innerCompressedData.WriteBytes(encoder.Encode(innerUncompressedBytes));

                innerCompressedData.Position = 0;
                innerCompressedData.WriteValueU32((uint)(innerCompressedData.Length - 4), Endian.Big);

                innerCompressedData.Position = 0;
                innerCompressedBytes = innerCompressedData.ReadBytes((uint)innerCompressedData.Length);
            }

            byte[] compressedBytes;

            if (innerCompressedBytes.Length <= BlockSize)
            {
                compressedBytes = new byte[innerCompressedBytes.Length +
                                           (innerCompressedBytes.Length / 16) + 64 + 3];
                var actualCompressedSize = compressedBytes.Length;

                var result = LZO.Compress(innerCompressedBytes,
                                          0,
                                          innerCompressedBytes.Length,
                                          compressedBytes,
                                          0,
                                          ref actualCompressedSize);
                if (result != LZO.ErrorCode.Success)
                {
                    throw new SaveCorruptionException(string.Format("LZO compression failure ({0})", result));
                }

                Array.Resize(ref compressedBytes, actualCompressedSize);
            }
            else
            {
                int innerCompressedOffset = 0;
                int innerCompressedSizeLeft = innerCompressedBytes.Length;

                using (var blockData = new MemoryStream())
                {
                    var blockCount = (innerCompressedSizeLeft + BlockSize) / BlockSize;
                    blockData.WriteValueS32(blockCount, Endian.Big);

                    blockData.Position = 4 + (blockCount * 8);

                    var blockInfos = new List<Tuple<uint, uint>>();
                    while (innerCompressedSizeLeft > 0)
                    {
                        var blockUncompressedSize = Math.Min(BlockSize, innerCompressedSizeLeft);

                        compressedBytes = new byte[blockUncompressedSize +
                                                   (blockUncompressedSize / 16) + 64 + 3];
                        var actualCompressedSize = compressedBytes.Length;

                        var result = LZO.Compress(innerCompressedBytes,
                                                  innerCompressedOffset,
                                                  blockUncompressedSize,
                                                  compressedBytes,
                                                  0,
                                                  ref actualCompressedSize);
                        if (result != LZO.ErrorCode.Success)
                        {
                            throw new SaveCorruptionException(string.Format("LZO compression failure ({0})", result));
                        }

                        blockData.Write(compressedBytes, 0, actualCompressedSize);
                        blockInfos.Add(new Tuple<uint, uint>((uint)actualCompressedSize, BlockSize));

                        innerCompressedOffset += blockUncompressedSize;
//.........这里部分代码省略.........

        public Stream Serialize(Endian endianness)
        {
            MemoryStream data = new MemoryStream();

            data.WriteValueU32((uint)LocalDataResolvers.Count, endianness);
            data.WriteValueU32((uint)RemoteDataResolvers.Count, endianness);
            data.WriteValueU32((uint)Unknown2s.Count, endianness);
            data.WriteValueU32(0, endianness); // 0 because we crashed if it was >0
            data.WriteValueU32((uint)Unknown4s.Count, endianness);

            foreach (LocalDataResolver r in LocalDataResolvers)
            {
                var val = r.Serialize();
                data.WriteValueU64(val, endianness);
            }

            foreach (RemoteDataResolver r in RemoteDataResolvers)
            {
                data.WriteValueU64(r.Serialize(), endianness);
            }

            foreach (Unknown2Resolver r in Unknown2s)
            {
                data.WriteValueU32(r.Serialize(), endianness);
            }

            foreach (Unknown4Resolver r in Unknown4s)
            {
                data.WriteValueU32(r.Serialize(), endianness);
            }

            data.Position = 0;
            return data;
        }

        public byte[] ToArray(int pccExportDataOffset, PCCObject pcc)
        {
            MemoryStream buffer = new MemoryStream();
            buffer.Write(headerData, 0, headerData.Length);

            if (properties.ContainsKey("LODGroup"))
            {
                properties["LODGroup"].Value.StringValue = "TEXTUREGROUP_LightAndShadowMap";
                //properties["LODGroup"].Value.IntValue = 1025;
            }
            else
            {
                buffer.WriteValueS64(pcc.AddName("LODGroup"));
                buffer.WriteValueS64(pcc.AddName("ByteProperty"));
                buffer.WriteValueS64(8);
                buffer.WriteValueS32(pcc.AddName("TEXTUREGROUP_LightAndShadowMap"));
                buffer.WriteValueS32(1025);
            }

            foreach (KeyValuePair<string, SaltPropertyReader.Property> kvp in properties)
            {
                SaltPropertyReader.Property prop = kvp.Value;

                if (prop.Name == "UnpackMin")
                {
                    for (int j = 0; j < UnpackNum; j++)
                    {
                        buffer.WriteValueS64(pcc.AddName(prop.Name));
                        buffer.WriteValueS64(pcc.AddName(prop.TypeVal.ToString()));
                        buffer.WriteValueS32(prop.Size);
                        buffer.WriteValueS32(j);
                        buffer.WriteValueF32(prop.Value.FloatValue, Endian.Little);
                    }
                    continue;
                }

                buffer.WriteValueS64(pcc.AddName(prop.Name));
                if (prop.Name == "None")
                {
                    for (int j = 0; j < 12; j++)
                        buffer.WriteByte(0);
                }
                else
                {
                    buffer.WriteValueS64(pcc.AddName(prop.TypeVal.ToString()));
                    buffer.WriteValueS64(prop.Size);

                    switch (prop.TypeVal)
                    {
                        case SaltPropertyReader.Type.IntProperty:
                            buffer.WriteValueS32(prop.Value.IntValue);
                            break;
                        case SaltPropertyReader.Type.BoolProperty:
                            buffer.Seek(-4, SeekOrigin.Current);
                            buffer.WriteValueS32(prop.Value.IntValue);
                            buffer.Seek(4, SeekOrigin.Current);
                            break;
                        case SaltPropertyReader.Type.NameProperty:
                            buffer.WriteValueS64(pcc.AddName(prop.Value.StringValue));
                            break;
                        case SaltPropertyReader.Type.StrProperty:
                            buffer.WriteValueS32(prop.Value.StringValue.Length + 1);
                            foreach (char c in prop.Value.StringValue)
                                buffer.WriteByte((byte)c);
                            buffer.WriteByte(0);
                            break;
                        case SaltPropertyReader.Type.StructProperty:
                            buffer.WriteValueS64(pcc.AddName(prop.Value.StringValue));
                            foreach (SaltPropertyReader.PropertyValue value in prop.Value.Array)
                                buffer.WriteValueS32(value.IntValue);
                            break;
                        case SaltPropertyReader.Type.ByteProperty:
                            buffer.WriteValueS32(pcc.AddName(prop.Value.StringValue));
                            buffer.WriteValueS32(prop.Value.IntValue);
                            break;
                        case SaltPropertyReader.Type.FloatProperty:
                            buffer.WriteValueF32(prop.Value.FloatValue, Endian.Little);
                            break;
                        default:
                            throw new FormatException("unknown property");
                    }
                }
            }

            buffer.WriteValueS32((int)(pccOffset + buffer.Position + 4));

            //Remove empty textures
            List<ImageInfo> tempList = new List<ImageInfo>();
            foreach (ImageInfo imgInfo in imgList)
            {
                if (imgInfo.storageType != storage.empty)
                    tempList.Add(imgInfo);
            }
            imgList = tempList;
            numMipMaps = (uint)imgList.Count;

            buffer.WriteValueU32(numMipMaps);

            foreach (ImageInfo imgInfo in imgList)
            {
//.........这里部分代码省略.........