deletemap.cpp

Go to the documentation of this file.

 
#include "deletemap.h"
 
#include <algorithm>
#include <cstdint>
 
#include "libmythbase/mythcorecontext.h" // for MythCoreContext, etc
#include "libmythbase/mythdate.h"
#include "libmythbase/mythlogging.h"
#include "libmythbase/mythtypes.h"       // for InfoMap
#include "libmythui/mythuiactions.h"     // for ACTION_DOWN, ACTION_UP
#include "mythplayer.h"
#include "osd.h"
#include "playercontext.h"               // for PlayerContext
#include "programinfo.h"
#include "tv_actions.h"                  // for ACTION_CLEARMAP, etc
 
#define LOC     QString("DelMap: ")
#define EDIT_CHECK do { \
    if(!m_editing) { \
        LOG(VB_GENERAL, LOG_ERR, LOC + "Cannot edit outside edit mode."); \
        return; \
    } \
} while(false)
 
void DeleteMap::Push(const QString &undoMessage)
{
    DeleteMapUndoEntry entry(m_deleteMap, undoMessage);
    // Remove all "redo" entries
    while (m_undoStack.size() > m_undoStackPointer)
        m_undoStack.pop_back();
    m_undoStack.append(entry);
    m_undoStackPointer ++;
    SaveMap(true);
}
 
void DeleteMap::PushDeferred(const frm_dir_map_t &savedMap,
                             const QString &undoMessage)
{
    // Temporarily roll back to the initial state, push the undo
    // entry, then restore the correct state.
    frm_dir_map_t tmp = m_deleteMap;
    m_deleteMap = savedMap;
    Push(undoMessage);
    m_deleteMap = tmp;
    SaveMap(true);
}
 
bool DeleteMap::Undo(void)
{
    if (!HasUndo())
        return false;
    m_undoStackPointer --;
    frm_dir_map_t tmp = m_deleteMap;
    m_deleteMap = m_undoStack[m_undoStackPointer].m_deleteMap;
    m_undoStack[m_undoStackPointer].m_deleteMap = tmp;
    m_changed = true;
    SaveMap(true);
    return true;
}
 
bool DeleteMap::Redo(void)
{
    if (!HasRedo())
        return false;
    frm_dir_map_t tmp = m_deleteMap;
    m_deleteMap = m_undoStack[m_undoStackPointer].m_deleteMap;
    m_undoStack[m_undoStackPointer].m_deleteMap = tmp;
    m_undoStackPointer ++;
    m_changed = true;
    SaveMap(true);
    return true;
}
 
QString DeleteMap::GetUndoMessage(void) const
{
    return (HasUndo() ? m_undoStack[m_undoStackPointer - 1].m_message :
            tr("(Nothing to undo)"));
}
 
QString DeleteMap::GetRedoMessage(void) const
{
    return (HasRedo() ? m_undoStack[m_undoStackPointer].m_message :
            tr("(Nothing to redo)"));
}
 
bool DeleteMap::HandleAction(const QString &action, uint64_t frame)
{
    bool handled = true;
    if (action == ACTION_UP)
    {
        UpdateSeekAmount(1);
    }
    else if (action == ACTION_DOWN)
    {
        UpdateSeekAmount(-1);
    }
    else if (action == ACTION_CLEARMAP)
    {
        Clear(tr("Clear Cuts"));
    }
    else if (action == ACTION_INVERTMAP)
    {
        ReverseAll();
    }
    else if (action == "MOVEPREV")
    {
        MoveRelative(frame, false);
    }
    else if (action == "MOVENEXT")
    {
        MoveRelative(frame, true);
    }
    else if (action == "CUTTOBEGINNING")
    {
        Push(tr("Cut to Beginning"));
        AddMark(frame, MARK_CUT_END);
    }
    else if (action == "CUTTOEND")
    {
        Push(tr("Cut to End"));
        AddMark(frame, MARK_CUT_START);
        // If the recording is still in progress, add an explicit end
        // mark at the end.
        if (m_ctx->m_player && m_ctx->m_player->IsWatchingInprogress())
            AddMark(m_ctx->m_player->GetTotalFrameCount() - 1, MARK_CUT_END);
    }
    else if (action == "NEWCUT")
    {
        NewCut(frame);
    }
    else if (action == "DELETE")
    {
        //: Delete the current cut or preserved region
        Delete(frame, tr("Delete"));
    }
    else if (action == "UNDO")
    {
        Undo();
    }
    else if (action == "REDO")
    {
        Redo();
    }
    else
    {
        handled = false;
    }
    return handled;
}
 
void DeleteMap::UpdateSeekAmount(int change)
{
    m_seekamountpos += change;
    m_seekamountpos = std::clamp(m_seekamountpos, 0, 9);
 
    m_seekText = "";
    switch (m_seekamountpos)
    {
        case 0: m_seekText = tr("cut point"); m_seekamount = -2; break;
        case 1: m_seekText = tr("keyframe"); m_seekamount = -1; break;
        case 2: m_seekText = tr("1 frame"); m_seekamount = 0; break;
        case 3: m_seekText = tr("0.5 seconds"); m_seekamount = 0.5; break;
        case 4: m_seekText = tr("%n second(s)", "", 1); m_seekamount = 1; break;
        case 5: m_seekText = tr("%n second(s)", "", 5); m_seekamount = 5; break;
        case 6: m_seekText = tr("%n second(s)", "", 20); m_seekamount = 20; break;
        case 7: m_seekText = tr("%n minute(s)", "", 1); m_seekamount = 60; break;
        case 8: m_seekText = tr("%n minute(s)", "", 5); m_seekamount = 300; break;
        case 9: m_seekText = tr("%n minute(s)", "", 10); m_seekamount = 600; break;
        default: m_seekText = tr("error"); m_seekamount = 1; break;
    }
}
 
QString DeleteMap::CreateTimeString(uint64_t frame, bool use_cutlist,
                                    double frame_rate, bool full_resolution)
    const
{
    std::chrono::milliseconds ms = TranslatePositionFrameToMs(frame, frame_rate, use_cutlist);
    QString fmt = (ms >= 1h) ? "H:mm:ss" : "mm:ss";
    if (full_resolution)
        fmt += ".zzz";
    return MythDate::formatTime(ms, fmt);
}
 
void DeleteMap::UpdateOSD(uint64_t frame, double frame_rate, OSD *osd)
{
    if (!osd || !m_ctx)
        return;
    CleanMap();
 
    InfoMap infoMap;
    m_ctx->LockPlayingInfo(__FILE__, __LINE__);
    if (m_ctx->m_playingInfo)
        m_ctx->m_playingInfo->ToMap(infoMap);
    m_ctx->UnlockPlayingInfo(__FILE__, __LINE__);
 
    QString cutmarker = " ";
    if (IsInDelete(frame))
        cutmarker = tr("cut");
 
    uint64_t total = m_ctx->m_player->GetTotalFrameCount();
    QString timestr = CreateTimeString(frame, false, frame_rate, true);
    QString relTimeDisplay;
    relTimeDisplay = CreateTimeString(frame, true, frame_rate, false);
    QString relLengthDisplay;
    relLengthDisplay = CreateTimeString(total, true, frame_rate, false);
    infoMap["timedisplay"]  = timestr;
    infoMap["framedisplay"] = QString::number(frame);
    infoMap["cutindicator"] = cutmarker;
    infoMap["title"]        = tr("Edit");
    infoMap["seekamount"]   = m_seekText;;
    infoMap["reltimedisplay"] = relTimeDisplay;
    infoMap["rellengthdisplay"] = relLengthDisplay;
    //: example: "13:24 (10:23 of 24:37)"
    infoMap["fulltimedisplay"] = tr("%3 (%1 of %2)")
        .arg(relTimeDisplay, relLengthDisplay, timestr);
 
    QHash<QString,float> posMap;
    posMap.insert("position", (float)((double)frame/(double)total));
    osd->SetValues(OSD_WIN_PROGEDIT, posMap, kOSDTimeout_None);
    osd->SetText(OSD_WIN_PROGEDIT, infoMap,  kOSDTimeout_None);
    if (m_changed || total != m_cachedTotalForOSD)
        osd->SetRegions(OSD_WIN_PROGEDIT, m_deleteMap, total);
    m_changed = false;
    m_cachedTotalForOSD = total;
}
 
void DeleteMap::UpdateOSD(std::chrono::milliseconds timecode, OSD *osd)
{
    osd->SetGraph(OSD_WIN_PROGEDIT, "audiograph", timecode);
}
 
void DeleteMap::SetEditing(bool edit, OSD *osd)
{
    if (osd && !edit)
        osd->HideWindow(OSD_WIN_PROGEDIT);
    m_editing = edit;
}
 
void DeleteMap::SetFileEditing(bool edit)
{
    if (m_ctx)
    {
        m_ctx->LockPlayingInfo(__FILE__, __LINE__);
        if (m_ctx->m_playingInfo)
            m_ctx->m_playingInfo->SetEditing(edit);
        m_ctx->UnlockPlayingInfo(__FILE__, __LINE__);
    }
}
 
bool DeleteMap::IsFileEditing(void)
{
    bool result = false;
    if (m_ctx)
    {
        m_ctx->LockPlayingInfo(__FILE__, __LINE__);
        if (m_ctx->m_playingInfo)
            result = m_ctx->m_playingInfo->QueryIsEditing();
        m_ctx->UnlockPlayingInfo(__FILE__, __LINE__);
    }
    return result;
}
 
bool DeleteMap::IsEmpty(void) const
{
    return m_deleteMap.empty();
}
 
void DeleteMap::Clear(const QString& undoMessage)
{
    if (!undoMessage.isEmpty())
        Push(undoMessage);
    m_deleteMap.clear();
    m_changed = true;
}
 
void DeleteMap::ReverseAll(void)
{
    EDIT_CHECK;
    Push(tr("Reverse Cuts"));
    for (auto it = m_deleteMap.begin(); it != m_deleteMap.end(); ++it)
        Add(it.key(), it.value() == MARK_CUT_END ? MARK_CUT_START :
                                                   MARK_CUT_END);
    CleanMap();
}
 
void DeleteMap::AddMark(uint64_t frame, MarkTypes type)
{
    EDIT_CHECK;
    if ((MARK_CUT_START != type) && (MARK_CUT_END != type) &&
        (MARK_PLACEHOLDER != type))
        return;
 
    frm_dir_map_t::Iterator find_temporary = m_deleteMap.find(frame);
    if (find_temporary != m_deleteMap.end())
    {
        if (MARK_PLACEHOLDER == find_temporary.value())
        {
            // Delete the temporary mark before putting a real mark at its
            // location
            Delete(frame, "");
        }
        else
        {
            // Don't add a mark on top of a mark
            return;
        }
    }
 
    int       lasttype  = MARK_UNSET;
    long long lastframe = -1;
    long long remove    = -1;
 
    if (type == MARK_CUT_END)
    {
        // remove curent end marker if it exists
        for (auto it = m_deleteMap.cbegin(); it != m_deleteMap.cend(); ++it)
        {
            if (it.key() > frame)
            {
                if ((lasttype == MARK_CUT_END) && (lastframe > -1))
                    remove = lastframe;
                break;
            }
            lasttype  = it.value();
            lastframe = it.key();
        }
        if ((remove < 0) && (lasttype == MARK_CUT_END) &&
            (lastframe > -1) && (lastframe < (int64_t)frame))
            remove = lastframe;
    }
    else if ((type == MARK_CUT_START) && !m_deleteMap.empty())
    {
        // remove curent start marker if it exists
        for (auto it = m_deleteMap.cend(); it != m_deleteMap.cbegin(); )
        {
            --it;
            if (it.key() <= frame)
            {
                if (lasttype == MARK_CUT_START && (lastframe > -1))
                    remove = lastframe;
                break;
            }
            lasttype  = it.value();
            lastframe = it.key();
        }
        if ((remove < 0) && (lasttype == MARK_CUT_START) &&
            (lastframe > -1) && (lastframe > (int64_t)frame))
            remove = lastframe;
    }
 
    if (remove > -1)
        Delete((uint64_t)remove);
    Add(frame, type);
    CleanMap();
}
 
void DeleteMap::Delete(uint64_t frame, const QString& undoMessage)
{
    EDIT_CHECK;
    if (m_deleteMap.isEmpty())
        return;
 
    if (!undoMessage.isEmpty())
        Push(undoMessage);
 
    uint64_t prev = GetNearestMark(frame, false);
    uint64_t next = GetNearestMark(frame, true);
 
    // If frame is a cut point, GetNearestMark() would return the previous/next
    // mark (not this frame), so check to see if we need to use frame, instead
    frm_dir_map_t::Iterator it = m_deleteMap.find(frame);
    if (it != m_deleteMap.end())
    {
        int type = it.value();
        if (MARK_PLACEHOLDER == type)
            next = prev = frame;
        else if (MARK_CUT_END == type)
            next = frame;
        else if (MARK_CUT_START == type)
            prev = frame;
    }
 
    Delete(prev);
    if (prev != next)
        Delete(next);
    CleanMap();
}
 
void DeleteMap::NewCut(uint64_t frame)
{
    EDIT_CHECK;
 
    // Defer pushing the undo entry until the end, when we're sure a
    // change has been made.
    frm_dir_map_t initialDeleteMap = m_deleteMap;
 
    // find any existing temporary marker to determine cut range
    int64_t existing = -1;
    for (auto it = m_deleteMap.begin() ; it != m_deleteMap.end(); ++it)
    {
        if (MARK_PLACEHOLDER == it.value())
        {
            existing = it.key();
            break;
        }
    }
 
    if (existing > -1)
    {
        uint64_t total = m_ctx->m_player->GetTotalFrameCount();
        auto otherframe = static_cast<uint64_t>(existing);
        if (otherframe == frame)
        {
            Delete(otherframe);
        }
        else
        {
            uint64_t startframe = 0;
            uint64_t endframe = 0;
            int64_t cut_start = -1;
            int64_t cut_end = -1;
            if (IsInDelete(frame))
            {
                MarkTypes type = MARK_UNSET;
                cut_start = GetNearestMark(frame, false);
                cut_end = GetNearestMark(frame, true);
                frm_dir_map_t::Iterator it2 = m_deleteMap.find(frame);
                if (it2 != m_deleteMap.end())
                    type = it2.value();
                if (MARK_CUT_START == type)
                {
                    cut_start = frame;
                }
                else if (MARK_CUT_END == type)
                {
                    cut_end = frame;
                }
            }
 
            if (otherframe < frame)
            {
                startframe = otherframe;
                endframe = cut_end != -1 ? static_cast<uint64_t>(cut_end)
                                         : frame;
            }
            else
            {
                startframe = cut_start != -1 ? static_cast<uint64_t>(cut_start)
                                             : frame;
                endframe = otherframe;
            }
 
            // Don't place a cut marker on first or last frame; instead cut
            // to beginning or end
            if (startframe == 1)
                startframe = 0;
            if (endframe >= total - 1)
                endframe = total;
 
            // Don't cut the entire recording
            if ((startframe == 0) && (endframe == total))
            {
                LOG(VB_GENERAL, LOG_CRIT, LOC +
                    "Refusing to cut entire recording.");
                return;
            }
 
            Delete(otherframe);
            Add(startframe, MARK_CUT_START);
            Add(endframe, MARK_CUT_END);
            // Clear out any markers between the start and end frames
            otherframe = 0;
            frm_dir_map_t::Iterator it = m_deleteMap.find(startframe);
            for ( ; it != m_deleteMap.end() && otherframe < endframe; ++it)
            {
                otherframe = it.key();
                if ((startframe < otherframe) && (endframe > otherframe))
                {
                    LOG(VB_PLAYBACK, LOG_INFO, LOC +
                        QString("Deleting bounded marker: %1").arg(otherframe));
                    it = m_deleteMap.erase(it);
                    m_changed = true;
                }
            }
        }
    }
    else
    {
        Add(frame, MARK_PLACEHOLDER);
    }
 
    CleanMap();
    PushDeferred(initialDeleteMap, tr("New Cut"));
}
 
void DeleteMap::MoveRelative(uint64_t frame, bool right)
{
    frm_dir_map_t::Iterator it = m_deleteMap.find(frame);
    if (it != m_deleteMap.end())
    {
        int type = it.value();
        if (((MARK_CUT_START == type) && !right) ||
            ((MARK_CUT_END == type) && right))
        {
            // If on a mark, don't move a mark from a different cut region;
            // instead, "move" this mark onto itself
            return;
        }
        if (((MARK_CUT_START == type) && right) ||
            ((MARK_CUT_END == type) && !right))
        {
            // If on a mark, don't collapse a cut region to 0;
            // instead, delete the region
            //: Delete the current cut or preserved region
            Delete(frame, tr("Delete"));
            return;
        }
        if (MARK_PLACEHOLDER == type)
        {
            // Delete the temporary mark before putting a real mark at its
            // location
            Delete(frame, "");
        }
    }
 
    uint64_t from = GetNearestMark(frame, right);
    Move(from, frame);
}
 
void DeleteMap::Move(uint64_t frame, uint64_t to)
{
    EDIT_CHECK;
    Push(tr("Move Mark"));
    MarkTypes type = Delete(frame);
    if (MARK_UNSET == type)
    {
        if (frame == 0)
            type = MARK_CUT_START;
        else if (frame == m_ctx->m_player->GetTotalFrameCount())
            type = MARK_CUT_END;
    }
    AddMark(to, type);
}
 
void DeleteMap::Add(uint64_t frame, MarkTypes type)
{
    m_deleteMap[frame] = type;
    m_changed = true;
}
 
MarkTypes DeleteMap::Delete(uint64_t frame)
{
    if (m_deleteMap.contains(frame))
    {
        m_changed = true;
        return m_deleteMap.take(frame);
    }
    return MARK_UNSET;
}
 
bool DeleteMap::IsInDelete(uint64_t frame) const
{
    if (m_deleteMap.isEmpty())
        return false;
 
    frm_dir_map_t::const_iterator it = m_deleteMap.find(frame);
    if (it != m_deleteMap.end())
        return true;
 
    int      lasttype  = MARK_UNSET;
    uint64_t lastframe = UINT64_MAX;
    for (it = m_deleteMap.begin() ; it != m_deleteMap.end(); ++it)
    {
        if (it.key() > frame)
            return MARK_CUT_END == it.value();
        lasttype  = it.value();
        lastframe = it.key();
    }
 
    return lasttype == MARK_CUT_START && lastframe <= frame;
}
 
bool DeleteMap::IsTemporaryMark(uint64_t frame) const
{
    if (m_deleteMap.isEmpty())
        return false;
 
    frm_dir_map_t::const_iterator it = m_deleteMap.find(frame);
    return (it != m_deleteMap.end()) && (MARK_PLACEHOLDER == it.value());
}
 
uint64_t DeleteMap::GetNearestMark(uint64_t frame, bool right, bool *hasMark)
    const
{
    uint64_t result = 0;
    if (hasMark)
        *hasMark = true;
    frm_dir_map_t::const_iterator it = m_deleteMap.begin();
    if (right)
    {
        result = m_ctx->m_player->GetTotalFrameCount();
        for (; it != m_deleteMap.end(); ++it)
            if (it.key() > frame)
                return it.key();
        if (hasMark)
            *hasMark = false;
    }
    else
    {
        result = 0;
        for (; it != m_deleteMap.end(); ++it)
        {
            if (it.key() >= frame)
                return result;
            result = it.key();
        }
    }
    return result;
}
 
bool DeleteMap::HasTemporaryMark(void) const
{
    if (!m_deleteMap.isEmpty())
    {
        for (auto it = m_deleteMap.cbegin(); it != m_deleteMap.cend(); ++it)
            if (MARK_PLACEHOLDER == it.value())
                return true;
    }
 
    return false;
}
 
void DeleteMap::CleanMap(void)
{
    if (IsEmpty())
        return;
 
    uint64_t total = m_ctx->m_player->GetTotalFrameCount();
    Delete(0);
    Delete(total);
 
    bool clear = false;
    while (!IsEmpty() && !clear)
    {
        clear = true;
        int     lasttype  = MARK_UNSET;
        int64_t lastframe = -1;
        int64_t tempframe = -1;
        QList<int64_t> deleteList;
        for (auto it = m_deleteMap.begin(); it != m_deleteMap.end(); ++it)
        {
            int      thistype  = it.value();
            uint64_t thisframe = it.key();
            if (thisframe >= total)
            {
                deleteList.append(thisframe);
            }
            else if (lasttype == thistype)
            {
                deleteList.append(thistype == MARK_CUT_END ? thisframe :
                                                  (uint64_t)lastframe);
                clear = false;
                break;
            }
            if (MARK_PLACEHOLDER == thistype)
            {
                if (tempframe > 0)
                    deleteList.append(tempframe);
                tempframe = thisframe;
            }
            else
            {
                lasttype  = thistype;
                lastframe = thisframe;
            }
        }
 
        // Delete the unwanted frame marks safely, and not while iterating over
        // the map which would lead to a crash
        for (const int64_t & dit : std::as_const(deleteList))
        {
            Delete(dit);
        }
        deleteList.clear();
    }
}
 
void DeleteMap::SetMap(const frm_dir_map_t &map)
{
    // Can't save an undo point for SetMap() or transcodes fail.
    // Leaving as a marker for refactor.
    //Push(tr("Set New Cut List"));
 
    Clear();
    m_deleteMap = map;
}
 
void DeleteMap::LoadCommBreakMap(frm_dir_map_t &map)
{
    Push(tr("Load Detected Commercials"));
    Clear();
    for (auto it = map.begin(); it != map.end(); ++it)
        Add(it.key(), it.value() == MARK_COMM_START ?
                MARK_CUT_START : MARK_CUT_END);
    CleanMap();
}
 
void DeleteMap::LoadMap(const QString& undoMessage)
{
    if (!m_ctx || !m_ctx->m_playingInfo || gCoreContext->IsDatabaseIgnored())
        return;
 
    if (!undoMessage.isEmpty())
        Push(undoMessage);
    Clear();
    m_ctx->LockPlayingInfo(__FILE__, __LINE__);
    m_ctx->m_playingInfo->QueryCutList(m_deleteMap);
    m_ctx->UnlockPlayingInfo(__FILE__, __LINE__);
    CleanMap();
}
 
bool DeleteMap::LoadAutoSaveMap(void)
{
    if (!m_ctx || !m_ctx->m_playingInfo || gCoreContext->IsDatabaseIgnored())
        return false;
 
    frm_dir_map_t tmpDeleteMap = m_deleteMap;
    Clear();
    m_ctx->LockPlayingInfo(__FILE__, __LINE__);
    bool result = m_ctx->m_playingInfo->QueryCutList(m_deleteMap, true);
    m_ctx->UnlockPlayingInfo(__FILE__, __LINE__);
    CleanMap();
    if (result)
        PushDeferred(tmpDeleteMap, tr("Load Auto-saved Cuts"));
    else
        m_deleteMap = tmpDeleteMap;
 
    return result;
}
 
void DeleteMap::SaveMap(bool isAutoSave)
{
    if (!m_ctx || !m_ctx->m_playingInfo || gCoreContext->IsDatabaseIgnored())
        return;
 
    if (!isAutoSave)
    {
        // Remove temporary placeholder marks
        for (auto it = m_deleteMap.begin(); it != m_deleteMap.end(); /*no inc*/)
        {
            if (MARK_PLACEHOLDER == it.value())
            {
                it = m_deleteMap.erase(it);
                m_changed = true;
            }
            else
            {
                ++it;
            }
        }
 
        CleanMap();
    }
    m_ctx->LockPlayingInfo(__FILE__, __LINE__);
    m_ctx->m_playingInfo->SaveMarkupFlag(MARK_UPDATED_CUT);
    m_ctx->m_playingInfo->SaveCutList(m_deleteMap, isAutoSave);
    m_ctx->UnlockPlayingInfo(__FILE__, __LINE__);
}
 
void DeleteMap::TrackerReset(uint64_t frame)
{
    m_nextCutStart = 0;
    m_nextCutStartIsValid = false;
    if (IsEmpty())
        return;
 
    frm_dir_map_t::iterator cutpoint = m_deleteMap.find(frame);
    if (cutpoint != m_deleteMap.end())
    {
        if (cutpoint.value() == MARK_CUT_START)
        {
            m_nextCutStartIsValid = true;
            m_nextCutStart = cutpoint.key();
        }
        else
        {
            ++cutpoint;
            m_nextCutStartIsValid = (cutpoint != m_deleteMap.end());
            m_nextCutStart = m_nextCutStartIsValid ? cutpoint.key() :
                m_ctx->m_player->GetTotalFrameCount();
        }
    }
    else
    {
        m_nextCutStart = GetNearestMark(frame, !IsInDelete(frame),
                                        &m_nextCutStartIsValid);
    }
    LOG(VB_PLAYBACK, LOG_INFO, LOC + QString("Tracker next CUT_START: %1")
                                   .arg(m_nextCutStart));
}
 
bool DeleteMap::TrackerWantsToJump(uint64_t frame, uint64_t &to) const
{
    if (IsEmpty() || !m_nextCutStartIsValid || frame < m_nextCutStart)
        return false;
 
    to = GetNearestMark(m_nextCutStart, true);
    LOG(VB_PLAYBACK, LOG_INFO, LOC +
        QString("Tracker wants to jump to: %1").arg(to));
    return true;
}
 
uint64_t DeleteMap::GetLastFrame(void) const
{
    uint64_t result = m_ctx->m_player->GetCurrentFrameCount();
    if (IsEmpty())
        return result;
 
    frm_dir_map_t::const_iterator it = m_deleteMap.end();
    --it;
 
    if (it.value() == MARK_CUT_START)
        result = it.key();
    return result;
}
 
bool DeleteMap::IsSaved(void) const
{
    if (!m_ctx || !m_ctx->m_playingInfo || gCoreContext->IsDatabaseIgnored())
        return true;
 
    frm_dir_map_t currentMap(m_deleteMap);
    frm_dir_map_t savedMap;
    m_ctx->LockPlayingInfo(__FILE__, __LINE__);
    m_ctx->m_playingInfo->QueryCutList(savedMap);
    m_ctx->UnlockPlayingInfo(__FILE__, __LINE__);
 
    // Remove temporary placeholder marks from currentMap
    for (auto it = currentMap.begin(); it != currentMap.end(); /* no inc */)
    {
        if (MARK_PLACEHOLDER == it.value())
            it = currentMap.erase(it);
        else
            ++it;
    }
 
    return currentMap == savedMap;
}
 
std::chrono::milliseconds DeleteMap::TranslatePositionFrameToMs(uint64_t position,
                                               float fallback_framerate,
                                               bool use_cutlist) const
{
    return m_ctx->m_player->GetDecoder()
        ->TranslatePositionFrameToMs(position, fallback_framerate,
                                     use_cutlist ? m_deleteMap :
                                     frm_dir_map_t());
}
uint64_t DeleteMap::TranslatePositionMsToFrame(std::chrono::milliseconds dur_ms,
                                               float fallback_framerate,
                                               bool use_cutlist) const
{
    return m_ctx->m_player->GetDecoder()
        ->TranslatePositionMsToFrame(dur_ms, fallback_framerate,
                                     use_cutlist ? m_deleteMap :
                                     frm_dir_map_t());
}
 
uint64_t DeleteMap::TranslatePositionAbsToRel(uint64_t position) const
{
    return DecoderBase::TranslatePositionAbsToRel(m_deleteMap, position);
}
 
uint64_t DeleteMap::TranslatePositionRelToAbs(uint64_t position) const
{
    return DecoderBase::TranslatePositionRelToAbs(m_deleteMap, position);
}