public int ReadCompressedInt32()
{
var b = buffer [position];
var u = (int) ReadCompressedUInt32 ();
var v = u >> 1;
if ((u & 1) == 0)
return v;
switch (b & 0xc0)
{
case 0:
case 0x40:
return v - 0x40;
case 0x80:
return v - 0x2000;
default:
return v - 0x10000000;
}
}