public static int[] SlidingCompressedSize(byte[] data, int stride, int len, int dictionarySizeLog2 = 26)
{
if (data.Length < len)
{
return(new int[0]);
}
var end = data.Length - len + 1;
var numWindows = end / stride + 1;
var results = new int[numWindows];
try
{
var encoder = new lzma1801.LzmaEncoder();
encoder.DictionarySizeLog2 =
dictionarySizeLog2; // Do not go over 26 !!! will consume ~10 times more memory than specified
for (int idx = 0; idx < numWindows; idx++)
{
var pos = idx * stride;
results[idx] = encoder.EncodedLen(data, pos, len);
}
}
catch
{
}
finally
{
}
return(results);
}
public static long CompressedSize(byte[] data, int dictionarySizeLog2 = 26)
{
//var outputBuffer = new byte[(int)(data.Length * 1.2)];
var encoder = new lzma1801.LzmaEncoder();
encoder.DictionarySizeLog2 = dictionarySizeLog2; // Do not go over 26 !!! will consume ~10 times more memory than specified
//var compressedSize = encoder.EncodedLen(data, data.Length, outputBuffer);
var compressedSize = encoder.EncodedLen(data, 0, data.Length);
return(compressedSize);
}