private int ReadInt(Stream stream)
{
int b1 = ReadUnsignedByte(stream);
int b2 = ReadUnsignedByte(stream);
int b3 = ReadUnsignedByte(stream);
int b4 = ReadUnsignedByte(stream);
return (b4 << 24) | (b3 << 16) | (b2 << 8) | b1;
}