int HevcUnit::extractSEGolombCode()
{
    unsigned rez = extractUEGolombCode();
    if (rez % 2 == 0)
        return -(int)(rez / 2);
    else
        return (int)((rez + 1) / 2);
}
int HevcUnit::extractSEGolombCode()
{
    unsigned rez = extractUEGolombCode();
    if (rez % 2 == 0)
        return -(int)(rez / 2);
    else
        return (int)((rez + 1) / 2);
}