public static int SerializeToBlock <T>(ref byte[] bytes, int offset, T obj, IFormatterResolver resolver)
{
var serializedData = MessagePackSerializer.SerializeUnsafe(obj, resolver);
if (serializedData.Count < NotCompressionSize)
{
// can't write direct, shoganai...
MessagePackBinary.EnsureCapacity(ref bytes, offset, serializedData.Count);
Buffer.BlockCopy(serializedData.Array, serializedData.Offset, bytes, offset, serializedData.Count);
return(serializedData.Count);
}
else
{
#if NET451 || NET40
var maxOutCount = LZ4Codec.MaximumOutputLength(serializedData.Count);
#else
var maxOutCount = LZ4Codec.MaximumOutputSize(serializedData.Count);
#endif
MessagePackBinary.EnsureCapacity(ref bytes, offset, c_lz4PackageHeaderSize + maxOutCount); // (ext header size + fixed length size)
// acquire ext header position
var extHeaderOffset = offset;
offset += c_lz4PackageHeaderSize;
// write body
var lz4Length = LZ4Codec.Encode(serializedData.Array, serializedData.Offset, serializedData.Count, bytes, offset, bytes.Length - offset);
// write extension header(always 6 bytes)
extHeaderOffset += MessagePackBinary.WriteExtensionFormatHeaderForceExt32Block(ref bytes, extHeaderOffset, ExtensionTypeCode, lz4Length + 5);
// write length(always 5 bytes)
MessagePackBinary.WriteInt32ForceInt32Block(ref bytes, extHeaderOffset, serializedData.Count);
return(c_lz4PackageHeaderSize + lz4Length);
}
}
