static ArraySegment <byte> SerializeCore <T>(T obj, IFormatterResolver resolver)
{
var serializedData = MessagePackSerializer.SerializeUnsafe(obj, resolver);
if (serializedData.Count < NotCompressionSize)
{
return(serializedData);
}
else
{
var offset = 0;
var buffer = LZ4MemoryPool.GetBuffer();
var maxOutCount = LZ4Codec.MaximumOutputLength(serializedData.Count);
if (buffer.Length + 6 + 5 < maxOutCount) // (ext header size + fixed length size)
{
buffer = new byte[6 + 5 + maxOutCount];
}
// acquire ext header position
var extHeaderOffset = offset;
offset += (6 + 5);
// write body
var lz4Length = LZ4Codec.Encode(serializedData.Array, serializedData.Offset, serializedData.Count, buffer, offset, buffer.Length - offset);
// write extension header(always 6 bytes)
extHeaderOffset += MessagePackBinary.WriteExtensionFormatHeaderForceExt32Block(ref buffer, extHeaderOffset, (sbyte)ExtensionTypeCode, lz4Length + 5);
// write length(always 5 bytes)
MessagePackBinary.WriteInt32ForceInt32Block(ref buffer, extHeaderOffset, serializedData.Count);
return(new ArraySegment <byte>(buffer, 0, 6 + 5 + lz4Length));
}
}
public static void Serialize <T>(IArrayBufferWriter <byte> output, T obj, IFormatterResolver resolver)
{
using (var serializedData = MessagePackSerializer.SerializeUnsafe(obj, resolver))
{
var serializedDataLen = serializedData.Count;
if ((uint)serializedDataLen < NotCompressionSize)
{
// can't write direct, shoganai...
serializedData.Span.CopyTo(output.GetSpan(serializedDataLen));
output.Advance(serializedDataLen);
return;
}
#if NET451
var maxOutCount = LZ4Codec.MaximumOutputLength(serializedDataLen);
var outputBuffer = output.GetBuffer(c_lz4PackageHeaderSize + maxOutCount);
// write body
var serializedBuffer = serializedData.Buffer;
var lz4Length = LZ4Codec.Encode(serializedBuffer.Array, serializedBuffer.Offset, serializedBuffer.Count, outputBuffer.Array, outputBuffer.Offset + c_lz4PackageHeaderSize, outputBuffer.Count - c_lz4PackageHeaderSize);
#else
var maxOutCount = LZ4Codec.MaximumOutputSize(serializedDataLen);
var outputSpan = output.GetSpan(c_lz4PackageHeaderSize + maxOutCount);
// write body
var lz4Length = LZ4Codec.Encode(serializedData.Span, outputSpan.Slice(c_lz4PackageHeaderSize));
#endif
ref byte addr = ref output.Origin;
MessagePackBinary.WriteExtensionFormatHeaderForceExt32Block(ref addr, 0, ExtensionTypeCode, lz4Length + 5);
MessagePackBinary.WriteInt32ForceInt32Block(ref addr, 6, serializedDataLen);
output.Advance(lz4Length + c_lz4PackageHeaderSize);
}
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
{
var maxOutCount = LZ4Codec.MaximumOutputLength(serializedData.Count);
MessagePackBinary.EnsureCapacity(ref bytes, offset, 6 + 5 + maxOutCount); // (ext header size + fixed length size)
// acquire ext header position
var extHeaderOffset = offset;
offset += (6 + 5);
// 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, (sbyte)ExtensionTypeCode, lz4Length + 5);
// write length(always 5 bytes)
MessagePackBinary.WriteInt32ForceInt32Block(ref bytes, extHeaderOffset, serializedData.Count);
return(6 + 5 + lz4Length);
}
}