void CommBreakMap::GetMap(frm_dir_map_t &map) const
{
    QMutexLocker locker(&commBreakMapLock);
    map.clear();
    map = commBreakMap;
    map.detach();
}

// Convert from a "relative" (cutlist-adjusted) value to its
// "absolute" (not cutlist-adjusted) mapped value.  Usually the
// position argument is in milliseconds, the map argument maps frames
// to milliseconds, the fallback_ratio is 1000/framerate_fps, and the
// return value is also in milliseconds.  Upon return, if necessary,
// the result may need a separate, non-cutlist adjusted conversion
// from milliseconds to frame number, using the inverse
// millisecond-to-frame map and the inverse fallback_ratio; see for
// example TranslatePositionMsToFrame().
//
// If the map and fallback_ratio arguments are omitted, it simply
// converts from a relatve (cutlist-adjusted) frame number to an
// absolute frame number.
uint64_t
DecoderBase::TranslatePositionRelToAbs(const frm_dir_map_t &deleteMap,
                                       uint64_t relPosition, // ms
                                       const frm_pos_map_t &map, // frame->ms
                                       float fallback_ratio)
{
    uint64_t addition = 0;
    uint64_t startOfCutRegion = 0;
    bool withinCut = false;
    bool first = true;
    for (frm_dir_map_t::const_iterator i = deleteMap.begin();
         i != deleteMap.end(); ++i)
    {
        if (first)
            withinCut = (i.value() == MARK_CUT_END);
        first = false;
        uint64_t mappedKey = TranslatePosition(map, i.key(), fallback_ratio);
        if (i.value() == MARK_CUT_START && !withinCut)
        {
            withinCut = true;
            startOfCutRegion = mappedKey;
            if (relPosition + addition <= startOfCutRegion)
                break;
        }
        else if (i.value() == MARK_CUT_END && withinCut)
        {
            withinCut = false;
            addition += (mappedKey - startOfCutRegion);
        }
    }
    return relPosition + addition;
}

void CommBreakMap::SetMap(const frm_dir_map_t &newMap, uint64_t framesPlayed)
{
    QMutexLocker locker(&m_commBreakMapLock);
    LOG(VB_COMMFLAG, LOG_INFO, LOC +
        QString("Setting New Commercial Break List, old size %1, new %2")
                    .arg(m_commBreakMap.size()).arg(newMap.size()));

    m_commBreakMap.clear();
    m_commBreakMap = newMap;
    m_hascommbreaktable = !m_commBreakMap.isEmpty();
    SetTracker(framesPlayed);
}

static void streamOutCommercialBreakList(
    ostream &output, const frm_dir_map_t &commercialBreakList)
{
    if (progress)
        output << "----------------------------" << endl;

    if (commercialBreakList.empty())
    {
        if (progress)
            output << "No breaks" << endl;
    }
    else
    {
        frm_dir_map_t::const_iterator it = commercialBreakList.begin();
        for (; it != commercialBreakList.end(); ++it)
        {
            output << "framenum: " << it.key() << "\tmarktype: " << *it
                   << endl;
        }
    }

    if (progress)
        output << "----------------------------" << endl;
}

void OSD::SetRegions(const QString &window, frm_dir_map_t &map,
                     long long total)
{
    MythScreenType *win = GetWindow(window);
    if (!win)
        return;

    MythUIEditBar *bar = dynamic_cast<MythUIEditBar*>(win->GetChild("editbar"));
    if (!bar)
        return;

    bar->ClearRegions();
    if (!map.size() || total < 1)
    {
        bar->Display();
        return;
    }

    long long start = -1;
    long long end   = -1;
    bool first = true;
    QMapIterator<uint64_t, MarkTypes> it(map);
    while (it.hasNext())
    {
        bool error = false;
        it.next();
        if (it.value() == MARK_CUT_START)
        {
            start = it.key();
            if (end > -1)
                error = true;
        }
        else if (it.value() == MARK_CUT_END)
        {
            if (first)
                start = 0;
            if (start < 0)
                error = true;
            end = it.key();
        }
        else if (it.value() == MARK_PLACEHOLDER)
        {
            start = end = it.key();
        }
        first = false;

        if (error)
        {
            LOG(VB_GENERAL, LOG_ERR, LOC + "deleteMap discontinuity");
            start = -1;
            end   = -1;
        }

        if (start >=0 && end >= 0)
        {
            bar->AddRegion((float)((double)start/(double)total),
                           (float)((double)end/(double)total));
            start = -1;
            end   = -1;
        }
    }
    if (start > -1 && end < 0)
        bar->AddRegion((float)((double)start/(double)total), 1.0f);

    bar->Display();
}

void CommBreakMap::GetMap(frm_dir_map_t &map) const
{
    QMutexLocker locker(&m_commBreakMapLock);
    map.clear();
    map = m_commBreakMap;
}