public BlockCompressionBuffer(int blockSize)
{
// https://github.com/madler/zlib/blob/2fa463bacfff79181df1a5270fb67cc679a53e71/compress.c#L81-L86
// compressBound(sourceLen): sourceLen + sourceLen/4096 + sourceLen/16384 + sourceLen/33554432 + 13
Input = new byte[blockSize];
Output = new byte[Zlib.compressBound(blockSize)];
}
private static int CompressBlock(byte[] inputBlock, byte[] outputBlock, int read)
{
int compressedSize = outputBlock.Length;
int result = Zlib.compress2(outputBlock, ref compressedSize, inputBlock, read, 9); // 1-9, fast to slow, -1 for default
if (!(result == 0))
{
throw new ZlibException(result);
}
return(compressedSize);
//var compressed = new MemoryStream(outputBlock, true);
//var deflate = new DeflateStream(compressed, CompressionLevel.Optimal, true);
//deflate.Write(inputBlock, 0, read);
//deflate.Close();
//return (int)compressed.Position;
}