public void Serialize(Stream stream)
{
if (this.compress)
{
this.CompressAndSerialize(stream);
}
else
{
using var obj = new FastSerializationObject(stream, this.blockName, this.version, this.miniumReaderVersion);
const int headerSize = 20;
int blockSize = headerSize;
for (int i = 0; i < this.eventBlobs.Length; ++i)
{
blockSize += this.eventBlobs[i].GetSerializationSize();
}
obj.WriteIntValue(blockSize);
obj.Align(4);
obj.WriteShortValue(headerSize);
obj.WriteShortValue(0);
obj.WriteLongValue(0);
obj.WriteLongValue(0);
for (int i = 0; i < this.eventBlobs.Length; ++i)
{
this.eventBlobs[i].Serialize(stream);
obj.Align(4);
}
}
}
private void CompressAndSerialize(Stream stream)
{
using var obj = new FastSerializationObject(stream, this.blockName, this.version, this.miniumReaderVersion);
var arrayPool = ArrayPool <byte> .Shared;
byte[] compressionMemory = null;
byte[] outputMemory = null;
try
{
const int OneMB = 1024 * 1024;
compressionMemory = arrayPool.Rent(OneMB);
var compressionStream = new MemoryStream(compressionMemory, 0, OneMB);
for (int i = 0; i < this.eventBlobs.Length; ++i)
{
this.eventBlobs[i].Serialize(compressionStream);
}
outputMemory = arrayPool.Rent(1024 * 1024); // !MB
var decompressedSize = (int)compressionStream.Position;
var compressedSize = ULZCompression.Compress(new ArraySegment <byte>(compressionMemory, 0, (int)compressionStream.Position), outputMemory, 2);
const int headerSize = 24;
obj.WriteIntValue(headerSize + compressedSize);
obj.Align(4);
obj.WriteShortValue(headerSize);
obj.WriteShortValue(0x2); // 2 means ULZCompression
obj.WriteLongValue(0);
obj.WriteLongValue(0);
obj.WriteIntValue(decompressedSize);
obj.WriteBytes(new ReadOnlySpan <byte>(outputMemory, 0, compressedSize));
}
finally
{
if (compressionMemory != null)
{
arrayPool.Return(compressionMemory);
}
if (outputMemory != null)
{
arrayPool.Return(outputMemory);
}
}
}
