internal Octets Final(Octets oin)
{
if (oin.size() == 0 && legacy_in == 0)
return oin;
Octets oout = Update(oin);
int osize = oout.size();
oout.reserve(osize + (int)legacy_in * 9 / 8 + 6);
byte[] obuf = oout.buffer();
uint opos = (uint)osize;
compress_block(obuf, ref opos, legacy_in);
oout.resize((int)opos);
return oin.swap(oout);
}
internal Octets Update(Octets oin)
{
Octets oout = new Octets();
uint ipos = 0, opos = 0;
byte[] ibuf = oin.buffer();
uint isize = (uint)oin.size();
uint remain = (uint)MPPC.MPPC_HIST_LEN - histptr - legacy_in;
if (isize >= remain)
{
oout.resize((int)(isize + legacy_in) * 9 / 8 + 6);
byte[] obuf = oout.buffer();
Array.Copy(ibuf, ipos, history, histptr + legacy_in, remain);
isize -= remain;
ipos += remain;
compress_block(obuf, ref opos, remain + legacy_in);
histptr = 0;
for (; isize >= (uint)MPPC.MPPC_HIST_LEN;
isize -= (uint)MPPC.MPPC_HIST_LEN, ipos += (uint)MPPC.MPPC_HIST_LEN)
{
Array.Copy(ibuf, ipos, history, histptr, (int)MPPC.MPPC_HIST_LEN);
compress_block(obuf, ref opos, (uint)MPPC.MPPC_HIST_LEN);
histptr = 0;
}
oout.resize((int)opos);
}
Array.Copy(ibuf, ipos, history, histptr + legacy_in, isize);
legacy_in += isize;
return oin.swap(oout);
}
