KStatus KCustomReader::Open (const QString& FileName, rate_t Rate, type_t Type,
    size_t FrontOffset, size_t BackOffset, size_t ChanCount)
{
    KStatus Sts = KBasicReader::Open (FileName);
    if (Sts.Failed())
        return Sts;

    if (FrontOffset + BackOffset >= m_File.size())
    {
        FrontOffset = 0;
        BackOffset = 0;
    }

    m_Rate = Rate;
    m_Type = Type;
    m_FrontOffset = FrontOffset;
    m_BackOffset = BackOffset;
    m_ChannelCount = std::max<size_t>(ChanCount, 1);

    return KStatus::Ok;
}