/// <summary>Flushes current chunk.</summary>
private void FlushCurrentChunk()
{
if (bufferOffset <= 0)
{
return;
}
var compressed = new byte[bufferOffset];
var compressedLength = highCompression
? LZ4Codec.EncodeHC(dataBuffer, 0, bufferOffset, compressed, 0, bufferOffset)
: LZ4Codec.Encode(dataBuffer, 0, bufferOffset, compressed, 0, bufferOffset);
if (compressedLength <= 0 || compressedLength >= bufferOffset)
{
// uncompressible block
compressed = dataBuffer;
compressedLength = bufferOffset;
}
var isCompressed = compressedLength < bufferOffset;
var flags = ChunkFlags.None;
if (isCompressed)
{
flags |= ChunkFlags.Compressed;
}
if (highCompression)
{
flags |= ChunkFlags.HighCompression;
}
WriteVarInt((ulong)flags);
WriteVarInt((ulong)bufferOffset);
if (isCompressed)
{
WriteVarInt((ulong)compressedLength);
}
innerStream.Write(compressed, 0, compressedLength);
innerStreamPosition += compressedLength;
bufferOffset = 0;
}