internal int DecodeScalar(DataPacket packet)
{
int bits = (int)packet.TryPeekU64Bits(PrefixBitLength, out int bitCnt);
if (bitCnt == 0)
{
return(-1);
}
// try to get the value from the prefix list...
HuffmanNode node = PrefixList[bits];
if (node != null)
{
packet.SkipBits(node.Length);
return(node.Value);
}
// nope, not possible... run the tree
bits = (int)packet.TryPeekU64Bits(MaxBits, out _);
node = PrefixOverflowTree;
do
{
if (node.Bits == (bits & node.Mask))
{
packet.SkipBits(node.Length);
return(node.Value);
}
} while ((node = node.Next) != null);
return(-1);
}