public uint UnpackInt(PropertyInfo info, Bitstream stream)
{
var flags = info.Flags;
if (flags.HasFlag(PropertyInfo.MultiFlag.EncodedAgainstTickcount))
{
if (flags.HasFlag(PropertyInfo.MultiFlag.Unsigned))
{
return stream.ReadVarUInt();
}
var value = stream.ReadVarUInt();
return unchecked((uint) ((-(value & 1)) ^ (value >> 1)));
}
var numBits = info.NumBits;
var isUnsigned = Convert.ToUInt32(flags.HasFlag(PropertyInfo.MultiFlag.Unsigned));
var signer = (0x80000000 >> (32 - numBits)) & unchecked((isUnsigned - 1));
{
var value = stream.ReadBits(numBits) ^ signer;
return value - signer;
}
}
public ulong UnpackInt64(PropertyInfo info, Bitstream stream)
{
if (info.Flags.HasFlag(PropertyInfo.MultiFlag.EncodedAgainstTickcount))
{
return stream.ReadVarUInt();
}
var negate = false;
var secondBits = (byte) (info.NumBits - 32);
if (!info.Flags.HasFlag(PropertyInfo.MultiFlag.Unsigned))
{
--secondBits;
if (stream.ReadBool())
{
negate = true;
}
}
ulong a = stream.ReadBits(32);
ulong b = stream.ReadBits(secondBits);
var value = (b << 32) | a;
if (negate)
{
value = unchecked((ulong) ((long) value*-1));
}
return value;
}
private uint ReadFieldNumber(uint lastField, Bitstream stream)
{
if (stream.ReadBool())
{
return unchecked(lastField + 1);
}
var value = stream.ReadVarUInt();
if (value == 0x3FFF)
{
return uint.MaxValue;
}
return unchecked(lastField + value + 1);
}
