mythplayer.cpp

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// -*- Mode: c++ -*-

#undef HAVE_AV_CONFIG_H

// C++ headers
#include <algorithm>
#include <cassert>
#include <cmath>                        // for fabs, ceil, round, signbit
#include <cstdint>
#include <cstdio>
#include <cstdlib>
#include <unistd.h>
using namespace std;

// Qt headers
#include <QCoreApplication>
#include <QDir>
#include <QHash>                        // for QHash
#include <QMap>                         // for QMap<>::iterator, etc
#include <QThread>                      // for QThread, etc
#include <QtCore/qnumeric.h>            // for qIsNaN
#include <utility>

// MythTV headers
#include "mthread.h"
#include "mythconfig.h"
#include "mythplayer.h"
#include "DetectLetterbox.h"
#include "audioplayer.h"
#include "interactivescreen.h"
#include "programinfo.h"
#include "mythcorecontext.h"
#include "livetvchain.h"
#include "decoderbase.h"
#include "nuppeldecoder.h"
#include "avformatdecoder.h"
#include "dummydecoder.h"
#include "tv_play.h"
#include "interactivetv.h"
#include "mythsystemevent.h"
#include "mythlogging.h"
#include "mythmiscutil.h"
#include "icringbuffer.h"
#include "audiooutput.h"
#include "cardutil.h"
#include "mythavutil.h"
#include "jitterometer.h"               // for Jitterometer
#include "mythtimer.h"                  // for MythTimer
#include "mythuiactions.h"              // for ACTION_LEFT, ACTION_RIGHT, etc
#include "ringbuffer.h"                 // for RingBuffer, etc
#include "tv_actions.h"                 // for ACTION_BIGJUMPFWD, etc
#include "mythcodeccontext.h"

// MythUI headers
#include <mythmainwindow.h>

extern "C" {
#include "vsync.h"
#include "libavcodec/avcodec.h"
}

#include "remoteencoder.h"

#if ! HAVE_ROUND
#define round(x) ((int) ((x) + 0.5))
#endif

static unsigned dbg_ident(const MythPlayer* /*player*/);

#define LOC      QString("Player(%1): ").arg(dbg_ident(this),0,36)
#define LOC_DEC  QString("Player(%1): ").arg(dbg_ident(m_mp),0,36)

const int MythPlayer::kNightModeBrightenssAdjustment = 10;
const int MythPlayer::kNightModeContrastAdjustment = 10;

// Exact frame seeking, no inaccuracy allowed.
const double MythPlayer::kInaccuracyNone = 0;

// By default, when seeking, snap to a keyframe if the keyframe's
// distance from the target frame is less than 10% of the total seek
// distance.
const double MythPlayer::kInaccuracyDefault = 0.1;

// Allow greater inaccuracy (50%) in the cutlist editor (unless the
// editor seek distance is set to 1 frame or 1 keyframe).
const double MythPlayer::kInaccuracyEditor = 0.5;

// Any negative value means completely inexact, i.e. seek to the
// keyframe that is closest to the target.
const double MythPlayer::kInaccuracyFull = -1.0;

void DecoderThread::run(void)
{
    RunProlog();
    LOG(VB_PLAYBACK, LOG_INFO, LOC_DEC + "Decoder thread starting.");
    if (m_mp)
        m_mp->DecoderLoop(m_start_paused);
    LOG(VB_PLAYBACK, LOG_INFO, LOC_DEC + "Decoder thread exiting.");
    RunEpilog();
}

static int toCaptionType(int type)
{
    if (kTrackTypeCC608 == type)            return kDisplayCC608;
    if (kTrackTypeCC708 == type)            return kDisplayCC708;
    if (kTrackTypeSubtitle == type)         return kDisplayAVSubtitle;
    if (kTrackTypeTeletextCaptions == type) return kDisplayTeletextCaptions;
    if (kTrackTypeTextSubtitle == type)     return kDisplayTextSubtitle;
    if (kTrackTypeRawText == type)          return kDisplayRawTextSubtitle;
    return 0;
}

static int toTrackType(int type)
{
    if (kDisplayCC608 == type)            return kTrackTypeCC608;
    if (kDisplayCC708 == type)            return kTrackTypeCC708;
    if (kDisplayAVSubtitle == type)       return kTrackTypeSubtitle;
    if (kDisplayTeletextCaptions == type) return kTrackTypeTeletextCaptions;
    if (kDisplayTextSubtitle == type)     return kTrackTypeTextSubtitle;
    if (kDisplayRawTextSubtitle == type)  return kTrackTypeRawText;
    return kTrackTypeUnknown;
}

MythMultiLocker::MythMultiLocker(std::initializer_list<QMutex*> Locks)
  : m_locks(Locks)
{
    Relock();
}

MythMultiLocker::~MythMultiLocker()
{
    Unlock();
}

void MythMultiLocker::Unlock(void)
{
    for (QVector<QMutex*>::const_reverse_iterator it = m_locks.crbegin(); it != m_locks.crend(); ++it)
        if (*it)
            (*it)->unlock();
}

void MythMultiLocker::Relock(void)
{
    for (QVector<QMutex*>::const_iterator it = m_locks.cbegin(); it != m_locks.cend(); ++it)
        if (*it)
            (*it)->lock();
}

MythPlayer::MythPlayer(PlayerFlags flags)
    : playerFlags(flags),
      m_display((flags & kVideoIsNull) ? nullptr : MythDisplay::AcquireRelease()),
      // CC608/708
      cc608(this), cc708(this),
      // Audio
      audio(this, (flags & kAudioMuted) != 0),
      // Debugging variables
      output_jmeter(new Jitterometer(LOC))
{
    max_diverge = float(gCoreContext->GetFloatSetting
        ("PlayerMaxDiverge", 3.0));
    if (max_diverge < 1.0F)
        max_diverge = 1.0F;

    playerThread = QThread::currentThread();
#ifdef Q_OS_ANDROID
    playerThreadId = gettid();
#endif
    // Playback (output) zoom control
    detect_letter_box = new DetectLetterbox(this);

    vbimode = VBIMode::Parse(gCoreContext->GetSetting("VbiFormat"));
    captionsEnabledbyDefault = gCoreContext->GetBoolSetting("DefaultCCMode");
    decode_extra_audio = gCoreContext->GetBoolSetting("DecodeExtraAudio", false);
    itvEnabled         = gCoreContext->GetBoolSetting("EnableMHEG", false);
    clearSavedPosition = gCoreContext->GetNumSetting("ClearSavedPosition", 1);
    endExitPrompt      = gCoreContext->GetNumSetting("EndOfRecordingExitPrompt");
    pip_default_loc    = (PIPLocation)gCoreContext->GetNumSetting("PIPLocation", kPIPTopLeft);

    // Get VBI page number
    QString mypage = gCoreContext->GetSetting("VBIpageNr", "888");
    bool valid = false;
    uint tmp = mypage.toInt(&valid, 16);
    ttPageNum = (valid) ? tmp : ttPageNum;
    cc608.SetTTPageNum(ttPageNum);
    avsync2adjustms = (int64_t)gCoreContext->GetNumSetting("AVSync2AdjustMS", 10);
    if (avsync2adjustms < 1)
        avsync2adjustms = 1;
    if (avsync2adjustms > 40)
        avsync2adjustms = 40;
    m_avTimer.start();
}

MythPlayer::~MythPlayer(void)
{
    // NB the interactiveTV thread is a client of OSD so must be deleted
    // before locking and deleting the OSD
    {
        QMutexLocker lk0(&itvLock);
        delete interactiveTV;
        interactiveTV = nullptr;
    }

    MythMultiLocker locker({&osdLock, &vidExitLock});

    if (osd)
    {
        delete osd;
        osd = nullptr;
    }

    SetDecoder(nullptr);

    if (decoderThread)
    {
        delete decoderThread;
        decoderThread = nullptr;
    }

    if (videosync)
    {
        delete videosync;
        videosync = nullptr;
    }

    if (videoOutput)
    {
        delete videoOutput;
        videoOutput = nullptr;
    }

    if (output_jmeter)
    {
        delete output_jmeter;
        output_jmeter = nullptr;
    }

    if (detect_letter_box)
    {
        delete detect_letter_box;
        detect_letter_box = nullptr;
    }

    MythDisplay::AcquireRelease(false);
}

void MythPlayer::SetWatchingRecording(bool mode)
{
    watchingrecording = mode;
    if (decoder)
        decoder->SetWatchingRecording(mode);
}

bool MythPlayer::IsWatchingInprogress(void) const
{
    return watchingrecording && player_ctx->m_recorder &&
        player_ctx->m_recorder->IsValidRecorder();
}

void MythPlayer::PauseBuffer(void)
{
    bufferPauseLock.lock();
    if (player_ctx->m_buffer)
    {
        player_ctx->m_buffer->Pause();
        player_ctx->m_buffer->WaitForPause();
    }
    bufferPaused = true;
    bufferPauseLock.unlock();
}

void MythPlayer::UnpauseBuffer(void)
{
    bufferPauseLock.lock();
    if (player_ctx->m_buffer)
        player_ctx->m_buffer->Unpause();
    bufferPaused = false;
    bufferPauseLock.unlock();
}

bool MythPlayer::Pause(void)
{
    if (!pauseLock.tryLock(100))
    {
        LOG(VB_PLAYBACK, LOG_INFO, LOC + "Waited 100ms to get pause lock.");
        DecoderPauseCheck();
    }
    bool already_paused = allpaused;
    if (already_paused)
    {
        pauseLock.unlock();
        return already_paused;
    }
    next_play_speed   = 0.0;
    next_normal_speed = false;
    PauseVideo();
    audio.Pause(true);
    PauseDecoder();
    PauseBuffer();
    if (!decoderPaused)
        PauseDecoder(); // Retry in case audio only stream
    allpaused = decoderPaused && videoPaused && bufferPaused;
    {
        if (FlagIsSet(kVideoIsNull) && decoder)
            decoder->UpdateFramesPlayed();
        else if (videoOutput && !FlagIsSet(kVideoIsNull))
            framesPlayed = videoOutput->GetFramesPlayed() + framesPlayedExtra;
    }
    pauseLock.unlock();
    return already_paused;
}

bool MythPlayer::Play(float speed, bool normal, bool unpauseaudio)
{
    pauseLock.lock();
    LOG(VB_PLAYBACK, LOG_INFO, LOC +
        QString("Play(%1, normal %2, unpause audio %3)")
            .arg(speed,5,'f',1).arg(normal).arg(unpauseaudio));

    if (deleteMap.IsEditing())
    {
        LOG(VB_GENERAL, LOG_ERR, LOC + "Ignoring Play(), in edit mode.");
        pauseLock.unlock();
        return false;
    }
    rtcbase = 0;
    prior_audiotimecode = 0;
    prior_videotimecode = 0;
    SetEof(kEofStateNone);
    UnpauseBuffer();
    UnpauseDecoder();
    if (unpauseaudio)
        audio.Pause(false);
    UnpauseVideo();
    allpaused = false;
    next_play_speed   = speed;
    next_normal_speed = normal;
    pauseLock.unlock();
    return true;
}

void MythPlayer::PauseVideo(void)
{
    videoPauseLock.lock();
    needNewPauseFrame = true;
    videoPaused = true;
    videoPauseLock.unlock();
}

void MythPlayer::UnpauseVideo(void)
{
    videoPauseLock.lock();
    videoPaused = false;
    videoPauseLock.unlock();
}

void MythPlayer::SetPlayingInfo(const ProgramInfo &pginfo)
{
    assert(player_ctx);
    if (!player_ctx)
        return;

    player_ctx->LockPlayingInfo(__FILE__, __LINE__);
    player_ctx->SetPlayingInfo(&pginfo);
    player_ctx->UnlockPlayingInfo(__FILE__, __LINE__);
}

void MythPlayer::SetPlaying(bool is_playing)
{
    QMutexLocker locker(&playingLock);

    playing = is_playing;

    playingWaitCond.wakeAll();
}

bool MythPlayer::IsPlaying(uint wait_in_msec, bool wait_for) const
{
    QMutexLocker locker(&playingLock);

    if (!wait_in_msec)
        return playing;

    MythTimer t;
    t.start();

    while ((wait_for != playing) && ((uint)t.elapsed() < wait_in_msec))
    {
        playingWaitCond.wait(
            &playingLock, max(0,(int)wait_in_msec - t.elapsed()));
    }

    return playing;
}

bool MythPlayer::InitVideo(void)
{
    if (!player_ctx)
        return false;

    PIPState pipState = player_ctx->GetPIPState();

    if (!decoder)
    {
        LOG(VB_GENERAL, LOG_ERR, LOC +
            "Cannot create a video renderer without a decoder.");
        return false;
    }

    videoOutput = MythVideoOutput::Create(
                    decoder->GetCodecDecoderName(),
                    decoder->GetVideoCodecID(),
                    pipState, video_dim, video_disp_dim, video_aspect,
                    parentWidget, embedRect,
                    video_frame_rate, (uint)playerFlags, m_codecName, m_maxReferenceFrames);

    if (!videoOutput)
    {
        LOG(VB_GENERAL, LOG_ERR, LOC +
                "Couldn't create VideoOutput instance. Exiting..");
        SetErrored(tr("Failed to initialize video output"));
        return false;
    }

    if (embedding && pipState == kPIPOff)
        videoOutput->EmbedInWidget(embedRect);

    return true;
}

void MythPlayer::ReinitOSD(void)
{
    if (videoOutput && !FlagIsSet(kVideoIsNull))
    {
        osdLock.lock();
        if (!is_current_thread(playerThread))
        {
            reinit_osd = true;
            osdLock.unlock();
            return;
        }
        QRect visible, total;
        float aspect, scaling;
        videoOutput->GetOSDBounds(total, visible, aspect,
                                  scaling, 1.0F);
        if (osd)
        {
            osd->SetPainter(videoOutput->GetOSDPainter());
            int stretch = lroundf(aspect * 100);
            if ((osd->Bounds() != visible) ||
                (osd->GetFontStretch() != stretch))
            {
                uint old = textDisplayMode;
                ToggleCaptions(old);
                osd->Reinit(visible, aspect);
                EnableCaptions(old, false);
                if (deleteMap.IsEditing())
                {
                    bool const changed = deleteMap.IsChanged();
                    deleteMap.SetChanged(true);
                    deleteMap.UpdateOSD(framesPlayed, video_frame_rate, osd);
                    deleteMap.SetChanged(changed);
                }
            }
        }

#ifdef USING_MHEG
        if (GetInteractiveTV())
        {
            QMutexLocker locker(&itvLock);
            interactiveTV->Reinit(total, visible, aspect);
            itvVisible = false;
        }
#endif // USING_MHEG
        reinit_osd = false;
        osdLock.unlock();
    }
}

void MythPlayer::ReinitVideo(bool ForceUpdate)
{

    bool aspect_only = false;
    {
        MythMultiLocker locker({&osdLock, &vidExitLock});

        videoOutput->SetVideoFrameRate(static_cast<float>(video_frame_rate));
        float aspect = (forced_video_aspect > 0) ? forced_video_aspect : video_aspect;
        if (!videoOutput->InputChanged(video_dim, video_disp_dim, aspect,
                                       decoder->GetVideoCodecID(), aspect_only, &locker,
                                       m_maxReferenceFrames, ForceUpdate))
        {
            LOG(VB_GENERAL, LOG_ERR, LOC +
                "Failed to Reinitialize Video. Exiting..");
            SetErrored(tr("Failed to reinitialize video output"));
            return;
        }

        // the display refresh rate may have been changed by VideoOutput
        if (videosync)
        {
            int ri = m_display->GetDisplayInfo(frame_interval).Rate();
            if (ri != videosync->getRefreshInterval())
            {
                LOG(VB_PLAYBACK, LOG_INFO, LOC +
                    QString("Refresh rate has changed from %1 to %2")
                    .arg(videosync->getRefreshInterval())
                    .arg(ri));
                videosync->setRefreshInterval(ri);
             }
        }

        if (osd)
            osd->SetPainter(videoOutput->GetOSDPainter());
        ReinitOSD();
    }

    if (!aspect_only)
        ClearAfterSeek();

    if (textDisplayMode)
        EnableSubtitles(true);
}

static inline QString toQString(FrameScanType scan) {
    switch (scan) {
        case kScan_Ignore: return QString("Ignore Scan");
        case kScan_Detect: return QString("Detect Scan");
        case kScan_Interlaced:  return QString("Interlaced Scan");
        case kScan_Progressive: return QString("Progressive Scan");
        default: return QString("Unknown Scan");
    }
}

FrameScanType MythPlayer::detectInterlace(FrameScanType newScan,
                                          FrameScanType scan,
                                          float fps, int video_height)
{
    QString dbg = QString("detectInterlace(") + toQString(newScan) +
        QString(", ") + toQString(scan) + QString(", ") +
        QString("%1").arg(static_cast<double>(fps)) + QString(", ") +
        QString("%1").arg(video_height) + QString(") ->");

    if (kScan_Ignore != newScan || kScan_Detect == scan)
    {
        // The scanning mode should be decoded from the stream, but if it
        // isn't, we have to guess.

        scan = kScan_Interlaced; // default to interlaced
        if ((720 == video_height) || // ATSC 720p
            (fps > 45))              // software deinterlacing
            scan = kScan_Progressive;

        if (kScan_Detect != newScan)
            scan = newScan;
    };

    LOG(VB_PLAYBACK, LOG_INFO, LOC + dbg +toQString(scan));

    return scan;
}

void MythPlayer::SetKeyframeDistance(int keyframedistance)
{
    keyframedist = (keyframedistance > 0) ? keyframedistance : keyframedist;
}

void MythPlayer::AutoDeint(VideoFrame *frame, bool allow_lock)
{
    if (!frame || m_scan_locked)
        return;

    if (frame->interlaced_frame)
    {
        if (m_scan_tracker < 0)
        {
            LOG(VB_PLAYBACK, LOG_INFO, LOC +
                QString("Interlaced frame seen after %1 progressive frames")
                    .arg(abs(m_scan_tracker)));
            m_scan_tracker = 2;
            if (allow_lock)
            {
                LOG(VB_PLAYBACK, LOG_INFO, LOC + "Locking scan to Interlaced.");
                SetScanType(kScan_Interlaced);
                return;
            }
        }
        m_scan_tracker++;
    }
    else
    {
        if (m_scan_tracker > 0)
        {
            LOG(VB_PLAYBACK, LOG_INFO, LOC +
                QString("Progressive frame seen after %1 interlaced frames")
                    .arg(m_scan_tracker));
            m_scan_tracker = 0;
        }
        m_scan_tracker--;
    }

    int min_count = !allow_lock ? 0 : 2;
    if (abs(m_scan_tracker) <= min_count)
        return;

    SetScanType((m_scan_tracker > min_count) ? kScan_Interlaced : kScan_Progressive);
    m_scan_locked  = false;
}

void MythPlayer::SetScanType(FrameScanType scan)
{
    if (!is_current_thread(playerThread))
    {
        resetScan = scan;
        return;
    }

    if (!videoOutput || !videosync)
        return; // hopefully this will be called again later...

    resetScan = kScan_Ignore;

    if (m_scan_initialized && m_scan == scan && m_frame_interval == frame_interval)
        return;

    m_scan_locked = (scan != kScan_Detect);

    m_scan_initialized = true;
    m_frame_interval = frame_interval;

    if (is_interlaced(scan))
    {
        bool normal = play_speed > 0.99F && play_speed < 1.01F && normal_speed;
        m_double_framerate = CanSupportDoubleRate() && normal;
        videoOutput->SetDeinterlacing(true, m_double_framerate);
    }
    else if (kScan_Progressive == scan)
    {
        m_double_framerate = false;
        videoOutput->SetDeinterlacing(false, false);
    }

    m_scan = scan;
}

void MythPlayer::SetVideoParams(int width, int height, double fps,
                                float aspect, bool ForceUpdate,
                                int ReferenceFrames, FrameScanType scan, const QString& codecName)
{
    bool paramsChanged = ForceUpdate;

    if (width >= 1 && height >= 1)
    {
        paramsChanged  = true;
        video_dim      = video_disp_dim = QSize(width, height);
        video_aspect   = aspect > 0.0F ? aspect : static_cast<float>(width) / height;
    }

    if (!qIsNaN(fps) && fps > 0.0 && fps < 121.0)
    {
        paramsChanged    = true;
        video_frame_rate = fps;
        if (ffrew_skip != 0 && ffrew_skip != 1)
        {
            UpdateFFRewSkip();
        }
        else
        {
            float temp_speed = (play_speed == 0.0F) ?
                audio.GetStretchFactor() : play_speed;
            SetFrameInterval(kScan_Progressive,
                             1.0 / (video_frame_rate * static_cast<double>(temp_speed)));
        }
    }

    if (!codecName.isEmpty())
    {
        m_codecName = codecName;
        paramsChanged = true;
    }

    if (ReferenceFrames > 0)
    {
        m_maxReferenceFrames = ReferenceFrames;
        paramsChanged = true;
    }

    if (!paramsChanged)
        return;

    if (videoOutput)
        ReinitVideo(ForceUpdate);

    if (IsErrored())
        return;

    // ensure deinterlacers are correctly reset after a change
    m_scan_initialized = false;
    SetScanType(detectInterlace(scan, m_scan, static_cast<float>(video_frame_rate),
                                video_disp_dim.height()));
    m_scan_locked  = false;
    m_scan_tracker = (m_scan == kScan_Interlaced) ? 2 : 0;
}


void MythPlayer::SetFrameRate(double fps)
{
    video_frame_rate = fps;
    float temp_speed = (play_speed == 0.0F) ?
        audio.GetStretchFactor() : play_speed;
    SetFrameInterval(kScan_Progressive,
                     1.0 / (video_frame_rate * static_cast<double>(temp_speed)));
}

void MythPlayer::SetFileLength(int total, int frames)
{
    totalLength = total;
    totalFrames = frames;
}

void MythPlayer::SetDuration(int duration)
{
    totalDuration = duration;
}

void MythPlayer::OpenDummy(void)
{
    isDummy = true;

    if (!videoOutput)
    {
        SetKeyframeDistance(15);
        SetVideoParams(720, 576, 25.00, 1.25F, false, 2);
    }

    player_ctx->LockPlayingInfo(__FILE__, __LINE__);
    auto *dec = new DummyDecoder(this, *(player_ctx->m_playingInfo));
    player_ctx->UnlockPlayingInfo(__FILE__, __LINE__);
    SetDecoder(dec);
}

void MythPlayer::CreateDecoder(char *testbuf, int testreadsize)
{
    if (NuppelDecoder::CanHandle(testbuf, testreadsize))
        SetDecoder(new NuppelDecoder(this, *player_ctx->m_playingInfo));
    else if (AvFormatDecoder::CanHandle(testbuf,
                                        player_ctx->m_buffer->GetFilename(),
                                        testreadsize))
    {
        SetDecoder(new AvFormatDecoder(this, *player_ctx->m_playingInfo,
                                       playerFlags));
    }
}

int MythPlayer::OpenFile(uint retries)
{
    // Disable hardware acceleration for second PBP
    if (player_ctx && (player_ctx->IsPBP() && !player_ctx->IsPrimaryPBP()) &&
        FlagIsSet(kDecodeAllowGPU))
    {
        playerFlags = (PlayerFlags)(playerFlags - kDecodeAllowGPU);
    }

    isDummy = false;

    if (!player_ctx || !player_ctx->m_buffer)
        return -1;

    livetv = player_ctx->m_tvchain && player_ctx->m_buffer->LiveMode();

    if (player_ctx->m_tvchain &&
        player_ctx->m_tvchain->GetInputType(player_ctx->m_tvchain->GetCurPos()) ==
        "DUMMY")
    {
        OpenDummy();
        return 0;
    }

    player_ctx->m_buffer->Start();
    char *testbuf = new char[kDecoderProbeBufferSize];
    UnpauseBuffer();

    // delete any pre-existing recorder
    SetDecoder(nullptr);
    int testreadsize = 2048;

    MythTimer bigTimer; bigTimer.start();
    int timeout = max((retries + 1) * 500, 30000U);
    while (testreadsize <= kDecoderProbeBufferSize)
    {
        MythTimer peekTimer; peekTimer.start();
        while (player_ctx->m_buffer->Peek(testbuf, testreadsize) != testreadsize)
        {
            // NB need to allow for streams encountering network congestion
            if (peekTimer.elapsed() > 30000 || bigTimer.elapsed() > timeout
                || player_ctx->m_buffer->GetStopReads())
            {
                LOG(VB_GENERAL, LOG_ERR, LOC +
                    QString("OpenFile(): Could not read first %1 bytes of '%2'")
                        .arg(testreadsize)
                        .arg(player_ctx->m_buffer->GetFilename()));
                delete[] testbuf;
                SetErrored(tr("Could not read first %1 bytes").arg(testreadsize));
                return -1;
            }
            LOG(VB_GENERAL, LOG_WARNING, LOC + "OpenFile() waiting on data");
            usleep(50 * 1000);
        }

        player_ctx->LockPlayingInfo(__FILE__, __LINE__);
        CreateDecoder(testbuf, testreadsize);
        player_ctx->UnlockPlayingInfo(__FILE__, __LINE__);
        if (decoder || (bigTimer.elapsed() > timeout))
            break;
        testreadsize <<= 1;
    }

    if (!decoder)
    {
        LOG(VB_GENERAL, LOG_ERR, LOC +
            QString("Couldn't find an A/V decoder for: '%1'")
                .arg(player_ctx->m_buffer->GetFilename()));
        SetErrored(tr("Could not find an A/V decoder"));

        delete[] testbuf;
        return -1;
    }
    if (decoder->IsErrored())
    {
        LOG(VB_GENERAL, LOG_ERR, LOC + "Could not initialize A/V decoder.");
        SetDecoder(nullptr);
        SetErrored(tr("Could not initialize A/V decoder"));

        delete[] testbuf;
        return -1;
    }

    decoder->SetSeekSnap(0);
    decoder->SetLiveTVMode(livetv);
    decoder->SetWatchingRecording(watchingrecording);
    decoder->SetTranscoding(transcoding);

    // Set 'no_video_decode' to true for audio only decodeing
    bool no_video_decode = false;

    // We want to locate decoder for video even if using_null_videoout
    // is true, only disable if no_video_decode is true.
    int ret = decoder->OpenFile(
        player_ctx->m_buffer, no_video_decode, testbuf, testreadsize);
    delete[] testbuf;

    if (ret < 0)
    {
        LOG(VB_GENERAL, LOG_ERR, QString("Couldn't open decoder for: %1")
                .arg(player_ctx->m_buffer->GetFilename()));
        SetErrored(tr("Could not open decoder"));
        return -1;
    }

    audio.CheckFormat();

    if (ret > 0)
    {
        hasFullPositionMap = true;
        deleteMap.LoadMap();
        deleteMap.TrackerReset(0);
    }

    // Determine the initial bookmark and update it for the cutlist
    bookmarkseek = GetBookmark();
    deleteMap.TrackerReset(bookmarkseek);
    deleteMap.TrackerWantsToJump(bookmarkseek, bookmarkseek);

    if (!gCoreContext->IsDatabaseIgnored() &&
        player_ctx->m_playingInfo->QueryAutoExpire() == kLiveTVAutoExpire)
    {
        gCoreContext->SaveSetting(
            "DefaultChanid", player_ctx->m_playingInfo->GetChanID());
        QString callsign = player_ctx->m_playingInfo->GetChannelSchedulingID();
        QString channum = player_ctx->m_playingInfo->GetChanNum();
        gCoreContext->SaveSetting(
            "DefaultChanKeys", callsign + "[]:[]" + channum);
        if (player_ctx->m_recorder && player_ctx->m_recorder->IsValidRecorder())
        {
            int cardid = player_ctx->m_recorder->GetRecorderNumber();
            CardUtil::SetStartChannel(cardid, channum);
        }
    }

    return IsErrored() ? -1 : 0;
}

void MythPlayer::SetFramesPlayed(uint64_t played)
{
    framesPlayed = played;
    framesPlayedExtra = 0;
    if (videoOutput)
        videoOutput->SetFramesPlayed(played);
}

int MythPlayer::GetFreeVideoFrames(void) const
{
    if (videoOutput)
        return videoOutput->FreeVideoFrames();
    return 0;
}

VideoFrameType* MythPlayer::DirectRenderFormats(void)
{
    static VideoFrameType s_defaultFormats[] = { FMT_YV12, FMT_NONE };
    if (videoOutput)
        return videoOutput->DirectRenderFormats();
    return &s_defaultFormats[0];
}

VideoFrame *MythPlayer::GetNextVideoFrame(void)
{
    if (videoOutput)
        return videoOutput->GetNextFreeFrame();
    return nullptr;
}

void MythPlayer::ReleaseNextVideoFrame(VideoFrame *buffer,
                                       int64_t timecode,
                                       bool wrap)
{
    if (wrap)
        WrapTimecode(timecode, TC_VIDEO);
    buffer->timecode = timecode;
    m_latestVideoTimecode = timecode;

    if (videoOutput)
        videoOutput->ReleaseFrame(buffer);

    detect_letter_box->Detect(buffer);
    if (allpaused)
        CheckAspectRatio(buffer);
}

void MythPlayer::DiscardVideoFrame(VideoFrame *buffer)
{
    if (videoOutput)
        videoOutput->DiscardFrame(buffer);
}

void MythPlayer::DiscardVideoFrames(bool KeyFrame, bool Flushed)
{
    if (videoOutput)
        videoOutput->DiscardFrames(KeyFrame, Flushed);
}

bool MythPlayer::HasReachedEof(void) const
{
    EofState eof = GetEof();
    if (eof != kEofStateNone && !allpaused)
        return true;
    if (GetEditMode())
        return false;
    if (livetv)
        return false;
    if (!deleteMap.IsEmpty() && framesPlayed >= deleteMap.GetLastFrame())
        return true;
    return false;
}

VideoFrame *MythPlayer::GetCurrentFrame(int &w, int &h)
{
    w = video_dim.width();
    h = video_dim.height();

    VideoFrame *retval = nullptr;

    vidExitLock.lock();
    if (videoOutput)
        retval = videoOutput->GetLastShownFrame();

    if (!retval)
        vidExitLock.unlock();

    return retval;
}

void MythPlayer::DeLimboFrame(VideoFrame *frame)
{
    if (videoOutput)
        videoOutput->DeLimboFrame(frame);
}

void MythPlayer::ReleaseCurrentFrame(VideoFrame *frame)
{
    if (frame)
        vidExitLock.unlock();
}

void MythPlayer::EmbedInWidget(QRect rect)
{
    if (videoOutput)
        videoOutput->EmbedInWidget(rect);
    else
    {
        embedRect = rect;
        embedding = true;
    }
}

void MythPlayer::StopEmbedding(void)
{
    if (videoOutput)
    {
        videoOutput->StopEmbedding();
        ReinitOSD();
    }
    else
    {
        embedRect = QRect();
        embedding = false;
    }
}

void MythPlayer::WindowResized(const QSize &new_size)
{
    if (videoOutput)
        videoOutput->WindowResized(new_size);
    ReinitOSD();
}

void MythPlayer::EnableTeletext(int page)
{
    QMutexLocker locker(&osdLock);
    if (!osd)
        return;

    osd->EnableTeletext(true, page);
    prevTextDisplayMode = textDisplayMode;
    textDisplayMode = kDisplayTeletextMenu;
}

void MythPlayer::DisableTeletext(void)
{
    QMutexLocker locker(&osdLock);
    if (!osd)
        return;

    osd->EnableTeletext(false, 0);
    textDisplayMode = kDisplayNone;

    /* If subtitles are enabled before the teletext menu was displayed,
       re-enabled them. */
    if (prevTextDisplayMode & kDisplayAllCaptions)
        EnableCaptions(prevTextDisplayMode, false);
}

void MythPlayer::ResetTeletext(void)
{
    QMutexLocker locker(&osdLock);
    if (!osd)
        return;

    osd->TeletextReset();
}

void MythPlayer::SetTeletextPage(uint page)
{
    osdLock.lock();
    DisableCaptions(textDisplayMode);
    ttPageNum = page;
    cc608.SetTTPageNum(ttPageNum);
    textDisplayMode &= ~kDisplayAllCaptions;
    textDisplayMode |= kDisplayNUVTeletextCaptions;
    osdLock.unlock();
}

bool MythPlayer::HandleTeletextAction(const QString &action)
{
    if (!(textDisplayMode & kDisplayTeletextMenu) || !osd)
        return false;

    bool handled = true;

    osdLock.lock();
    if (action == "MENU" || action == ACTION_TOGGLETT || action == "ESCAPE")
        DisableTeletext();
    else if (osd)
        handled = osd->TeletextAction(action);
    osdLock.unlock();

    return handled;
}

void MythPlayer::ResetCaptions(void)
{
    QMutexLocker locker(&osdLock);
    if (!osd)
        return;

    if (((textDisplayMode & kDisplayAVSubtitle)      ||
         (textDisplayMode & kDisplayTextSubtitle)    ||
         (textDisplayMode & kDisplayRawTextSubtitle) ||
         (textDisplayMode & kDisplayDVDButton)       ||
         (textDisplayMode & kDisplayCC608)           ||
         (textDisplayMode & kDisplayCC708)))
    {
        osd->ClearSubtitles();
    }
    else if ((textDisplayMode & kDisplayTeletextCaptions) ||
             (textDisplayMode & kDisplayNUVTeletextCaptions))
    {
        osd->TeletextClear();
    }
}

void MythPlayer::DisableCaptions(uint mode, bool osd_msg)
{
    if (textDisplayMode)
        prevNonzeroTextDisplayMode = textDisplayMode;
    textDisplayMode &= ~mode;
    ResetCaptions();

    QMutexLocker locker(&osdLock);

    bool newTextDesired = (textDisplayMode & kDisplayAllTextCaptions) != 0U;
    // Only turn off textDesired if the Operator requested it.
    if (osd_msg || newTextDesired)
        textDesired = newTextDesired;
    QString msg = "";
    if (kDisplayNUVTeletextCaptions & mode)
        msg += tr("TXT CAP");
    if (kDisplayTeletextCaptions & mode)
    {
        msg += decoder->GetTrackDesc(kTrackTypeTeletextCaptions,
                                     GetTrack(kTrackTypeTeletextCaptions));
        DisableTeletext();
    }
    int preserve = textDisplayMode & (kDisplayCC608 | kDisplayTextSubtitle |
                                      kDisplayAVSubtitle | kDisplayCC708 |
                                      kDisplayRawTextSubtitle);
    if ((kDisplayCC608 & mode) || (kDisplayCC708 & mode) ||
        (kDisplayAVSubtitle & mode) || (kDisplayRawTextSubtitle & mode))
    {
        int type = toTrackType(mode);
        msg += decoder->GetTrackDesc(type, GetTrack(type));
        if (osd)
            osd->EnableSubtitles(preserve);
    }
    if (kDisplayTextSubtitle & mode)
    {
        msg += tr("Text subtitles");
        if (osd)
            osd->EnableSubtitles(preserve);
    }
    if (!msg.isEmpty() && osd_msg)
    {
        msg += " " + tr("Off");
        SetOSDMessage(msg, kOSDTimeout_Med);
    }
}

void MythPlayer::EnableCaptions(uint mode, bool osd_msg)
{
    QMutexLocker locker(&osdLock);
    bool newTextDesired = (mode & kDisplayAllTextCaptions) != 0U;
    // Only turn off textDesired if the Operator requested it.
    if (osd_msg || newTextDesired)
        textDesired = newTextDesired;
    QString msg = "";
    if ((kDisplayCC608 & mode) || (kDisplayCC708 & mode) ||
        (kDisplayAVSubtitle & mode) || kDisplayRawTextSubtitle & mode)
    {
        int type = toTrackType(mode);
        msg += decoder->GetTrackDesc(type, GetTrack(type));
        if (osd)
            osd->EnableSubtitles(mode);
    }
    if (kDisplayTextSubtitle & mode)
    {
        if (osd)
            osd->EnableSubtitles(kDisplayTextSubtitle);
        msg += tr("Text subtitles");
    }
    if (kDisplayNUVTeletextCaptions & mode)
        msg += tr("TXT %1").arg(ttPageNum, 3, 16);
    if (kDisplayTeletextCaptions & mode)
    {
        msg += decoder->GetTrackDesc(kTrackTypeTeletextCaptions,
                                     GetTrack(kTrackTypeTeletextCaptions));

        int page = decoder->GetTrackLanguageIndex(
            kTrackTypeTeletextCaptions,
            GetTrack(kTrackTypeTeletextCaptions));

        EnableTeletext(page);
        textDisplayMode = kDisplayTeletextCaptions;
    }

    msg += " " + tr("On");

    LOG(VB_PLAYBACK, LOG_INFO, QString("EnableCaptions(%1) msg: %2")
        .arg(mode).arg(msg));

    textDisplayMode = mode;
    if (textDisplayMode)
        prevNonzeroTextDisplayMode = textDisplayMode;
    if (osd_msg)
        SetOSDMessage(msg, kOSDTimeout_Med);
}

bool MythPlayer::ToggleCaptions(void)
{
    SetCaptionsEnabled(!((bool)textDisplayMode));
    return textDisplayMode;
}

bool MythPlayer::ToggleCaptions(uint type)
{
    QMutexLocker locker(&osdLock);
    uint mode = toCaptionType(type);
    uint origMode = textDisplayMode;

    if (textDisplayMode)
        DisableCaptions(textDisplayMode, (origMode & mode) != 0U);
    if (origMode & mode)
        return textDisplayMode;
    if (mode)
        EnableCaptions(mode);
    return textDisplayMode;
}

void MythPlayer::SetCaptionsEnabled(bool enable, bool osd_msg)
{
    QMutexLocker locker(&osdLock);
    enableCaptions = disableCaptions = false;
    uint origMode = textDisplayMode;

    // Only turn off textDesired if the Operator requested it.
    if (osd_msg || enable)
        textDesired = enable;

    if (!enable)
    {
        DisableCaptions(origMode, osd_msg);
        return;
    }
    int mode = HasCaptionTrack(prevNonzeroTextDisplayMode) ?
        prevNonzeroTextDisplayMode : NextCaptionTrack(kDisplayNone);
    if (origMode != (uint)mode)
    {
        DisableCaptions(origMode, false);

        if (kDisplayNone == mode)
        {
            if (osd_msg)
            {
                SetOSDMessage(tr("No captions",
                                 "CC/Teletext/Subtitle text not available"),
                              kOSDTimeout_Med);
            }
            LOG(VB_PLAYBACK, LOG_INFO,
                "No captions available yet to enable.");
        }
        else if (mode)
        {
            EnableCaptions(mode, osd_msg);
        }
    }
    ResetCaptions();
}

bool MythPlayer::GetCaptionsEnabled(void)
{
    return (kDisplayNUVTeletextCaptions == textDisplayMode) ||
           (kDisplayTeletextCaptions    == textDisplayMode) ||
           (kDisplayAVSubtitle          == textDisplayMode) ||
           (kDisplayCC608               == textDisplayMode) ||
           (kDisplayCC708               == textDisplayMode) ||
           (kDisplayTextSubtitle        == textDisplayMode) ||
           (kDisplayRawTextSubtitle     == textDisplayMode) ||
           (kDisplayTeletextMenu        == textDisplayMode);
}

QStringList MythPlayer::GetTracks(uint type)
{
    if (decoder)
        return decoder->GetTracks(type);
    return QStringList();
}

uint MythPlayer::GetTrackCount(uint type)
{
    if (decoder)
        return decoder->GetTrackCount(type);
    return 0;
}

int MythPlayer::SetTrack(uint type, int trackNo)
{
    int ret = -1;
    if (!decoder)
        return ret;

    ret = decoder->SetTrack(type, trackNo);
    if (kTrackTypeAudio == type)
    {
        QString msg = "";
        if (decoder)
            SetOSDMessage(decoder->GetTrackDesc(type, GetTrack(type)),
                          kOSDTimeout_Med);
        return ret;
    }

    uint subtype = toCaptionType(type);
    if (subtype)
    {
        DisableCaptions(textDisplayMode, false);
        EnableCaptions(subtype, true);
        if ((kDisplayCC708 == subtype || kDisplayCC608 == subtype) && decoder)
        {
            int sid = decoder->GetTrackInfo(type, trackNo).m_stream_id;
            if (sid >= 0)
            {
                (kDisplayCC708 == subtype) ? cc708.SetCurrentService(sid) :
                                             cc608.SetMode(sid);
            }
        }
    }
    return ret;
}

void MythPlayer::TracksChanged(uint trackType)
{
    if (trackType >= kTrackTypeSubtitle &&
        trackType <= kTrackTypeTeletextCaptions && textDesired)
    {
        enableCaptions = true;
    }
}

void MythPlayer::EnableSubtitles(bool enable)
{
    if (enable)
        enableCaptions = true;
    else
        disableCaptions = true;
}

void MythPlayer::EnableForcedSubtitles(bool enable)
{
    if (enable)
        enableForcedSubtitles = true;
    else
        disableForcedSubtitles = true;
}

void MythPlayer::SetAllowForcedSubtitles(bool allow)
{
    allowForcedSubtitles = allow;
    SetOSDMessage(allowForcedSubtitles ?
                      tr("Forced Subtitles On") :
                      tr("Forced Subtitles Off"),
                  kOSDTimeout_Med);
}

void MythPlayer::DoDisableForcedSubtitles(void)
{
    disableForcedSubtitles = false;
    osdLock.lock();
    if (osd)
        osd->DisableForcedSubtitles();
    osdLock.unlock();
}

void MythPlayer::DoEnableForcedSubtitles(void)
{
    enableForcedSubtitles = false;
    if (!allowForcedSubtitles)
        return;

    osdLock.lock();
    if (osd)
        osd->EnableSubtitles(kDisplayAVSubtitle, true /*forced only*/);
    osdLock.unlock();
}

int MythPlayer::GetTrack(uint type)
{
    if (decoder)
        return decoder->GetTrack(type);
    return -1;
}

int MythPlayer::ChangeTrack(uint type, int dir)
{
    if (!decoder)
        return -1;

    int retval = decoder->ChangeTrack(type, dir);
    if (retval >= 0)
    {
        SetOSDMessage(decoder->GetTrackDesc(type, GetTrack(type)),
                      kOSDTimeout_Med);
        return retval;
    }
    return -1;
}

void MythPlayer::ChangeCaptionTrack(int dir)
{
    if (!decoder || (dir < 0))
        return;

    if (!((textDisplayMode == kDisplayTextSubtitle) ||
          (textDisplayMode == kDisplayNUVTeletextCaptions) ||
          (textDisplayMode == kDisplayNone)))
    {
        int tracktype = toTrackType(textDisplayMode);
        if (GetTrack(tracktype) < decoder->NextTrack(tracktype))
        {
            SetTrack(tracktype, decoder->NextTrack(tracktype));
            return;
        }
    }
    int nextmode = NextCaptionTrack(textDisplayMode);
    if ((nextmode == kDisplayTextSubtitle) ||
        (nextmode == kDisplayNUVTeletextCaptions) ||
        (nextmode == kDisplayNone))
    {
        DisableCaptions(textDisplayMode, true);
        if (nextmode != kDisplayNone)
            EnableCaptions(nextmode, true);
    }
    else
    {
        int tracktype = toTrackType(nextmode);
        int tracks = decoder->GetTrackCount(tracktype);
        if (tracks)
        {
            DisableCaptions(textDisplayMode, true);
            SetTrack(tracktype, 0);
        }
    }
}

bool MythPlayer::HasCaptionTrack(int mode)
{
    if (mode == kDisplayNone)
        return false;
    if (((mode == kDisplayTextSubtitle) && HasTextSubtitles()) ||
         (mode == kDisplayNUVTeletextCaptions))
    {
        return true;
    }
    if (!(mode == kDisplayTextSubtitle) &&
               decoder->GetTrackCount(toTrackType(mode)))
    {
        return true;
    }
    return false;
}

int MythPlayer::NextCaptionTrack(int mode)
{
    // Text->TextStream->708->608->AVSubs->Teletext->NUV->None
    // NUV only offerred if PAL
    bool pal      = (vbimode == VBIMode::PAL_TT);
    int  nextmode = kDisplayNone;

    if (kDisplayTextSubtitle == mode)
        nextmode = kDisplayRawTextSubtitle;
    else if (kDisplayRawTextSubtitle == mode)
        nextmode = kDisplayCC708;
    else if (kDisplayCC708 == mode)
        nextmode = kDisplayCC608;
    else if (kDisplayCC608 == mode)
        nextmode = kDisplayAVSubtitle;
    else if (kDisplayAVSubtitle == mode)
        nextmode = kDisplayTeletextCaptions;
    else if (kDisplayTeletextCaptions == mode)
        nextmode = pal ? kDisplayNUVTeletextCaptions : kDisplayNone;
    else if ((kDisplayNUVTeletextCaptions == mode) && pal)
        nextmode = kDisplayNone;
    else if (kDisplayNone == mode)
        nextmode = kDisplayTextSubtitle;

    if (nextmode == kDisplayNone || HasCaptionTrack(nextmode))
        return nextmode;

    return NextCaptionTrack(nextmode);
}

void MythPlayer::SetFrameInterval(FrameScanType scan, double frame_period)
{
    if (decoder)
        m_fpsMultiplier = decoder->GetfpsMultiplier();
    frame_interval = static_cast<int>(lround(1000000.0 * frame_period) / m_fpsMultiplier);
    if (!avsync_predictor_enabled)
        avsync_predictor = 0;
    avsync_predictor_enabled = false;

    LOG(VB_PLAYBACK, LOG_INFO, LOC + QString("SetFrameInterval Interval:%1 Speed:%2 Scan:%3 (Multiplier: %4)")
        .arg(frame_interval).arg(static_cast<double>(play_speed)).arg(toQString(scan)).arg(m_fpsMultiplier));
    if (play_speed < 1 || play_speed > 2 || refreshrate <= 0)
        return;

    avsync_predictor_enabled = ((frame_interval - (frame_interval / 200)) < refreshrate);
}

void MythPlayer::ResetAVSync(void)
{
    avsync_avg = 0;
    if (!avsync_predictor_enabled || avsync_predictor >= refreshrate)
        avsync_predictor = 0;
    prevtc = 0;
    avsync_next = avsync_interval;      // Frames till next sync check
    rtcbase = 0;
    prior_audiotimecode = 0;
    prior_videotimecode = 0;
    LOG(VB_PLAYBACK | VB_TIMESTAMP, LOG_INFO, LOC + "A/V sync reset");
}

void MythPlayer::InitAVSync(void)
{
    videosync->Start();

    avsync_adjustment = 0;

    repeat_delay = 0;

    refreshrate = m_display->GetDisplayInfo(frame_interval).Rate();

    // Number of frames over which to average time divergence
    avsync_averaging=4;
    rtcbase = 0;
    prior_audiotimecode = 0;
    prior_videotimecode = 0;

    // Allow override of averaging value
    avsync_averaging = gCoreContext->GetNumSetting("AVSyncAveraging", avsync_averaging);  // Number of frames to average
    if (avsync_averaging < 4)
        avsync_averaging = 4;
    avsync_interval = avsync_averaging / max_diverge - 1;   // Number of frames skip between sync checks
    if (avsync_interval < 0)
        avsync_interval = 0;
    avsync_next = avsync_interval;      // Frames till next sync check

    if (!FlagIsSet(kVideoIsNull))
    {
        QString timing_type = videosync->getName();

        QString msg = QString("Video timing method: %1").arg(timing_type);
        LOG(VB_GENERAL, LOG_INFO, LOC + msg);
        msg = QString("Display Refresh Rate: %1 Video Frame Rate: %2")
                       .arg(1000000.0 / refreshrate, 0, 'f', 3)
                       .arg(1000000.0 / frame_interval, 0, 'f', 3);
        LOG(VB_PLAYBACK, LOG_INFO, LOC + msg);

        SetFrameInterval(m_scan,
                         1.0 / (video_frame_rate * static_cast<double>(play_speed)));

        // try to get preferential scheduling, but ignore if we fail to.
        myth_nice(-19);
    }
}

int64_t MythPlayer::AVSyncGetAudiotime(void)
{
    int64_t currentaudiotime = 0;
    if (normal_speed)
    {
        currentaudiotime = audio.GetAudioTime();
    }
    return currentaudiotime;
}

void MythPlayer::AVSync(VideoFrame *buffer, bool limit_delay)
{
    if (gCoreContext->GetBoolSetting("PlaybackAVSync2", false))
    {
        AVSync2(buffer);
        return;
    }

    int repeat_pict  = 0;
    int64_t timecode = audio.GetAudioTime();

    if (buffer)
    {
        repeat_pict   = buffer->repeat_pict;
        timecode      = buffer->timecode;
        disp_timecode = buffer->disp_timecode;
    }

    bool decoderdeint = buffer && buffer->decoder_deinterlaced;
    FrameScanType ps = m_scan;
    if (kScan_Detect == m_scan || kScan_Ignore == m_scan || decoderdeint)
    {
        ps = kScan_Progressive;
    }
    else if (buffer && is_interlaced(ps))
    {
        ps = kScan_Interlaced;
        buffer->interlaced_reversed = m_scan == kScan_Intr2ndField;
    }

    // only display the second field if needed
    m_double_framerate = is_interlaced(ps) && m_lastDeinterlacer2x;

    float diverge = 0.0F;
    int frameDelay = m_double_framerate ? frame_interval / 2 : frame_interval;
    int vsync_delay_clock = 0;
    //int64_t currentaudiotime = 0;

    if (videoOutput->IsErrored())
    {
        LOG(VB_GENERAL, LOG_ERR, LOC +
            "AVSync: Unknown error in videoOutput, aborting playback.");
        SetErrored(tr("Failed to initialize A/V Sync"));
        return;
    }

    if (normal_speed && avsync_next==0)
    {
        diverge = (float)avsync_avg / (float)frame_interval;
    }

    if (avsync_next > 0)
    {
        avsync_next--;
    }
    else
    {
        int divisor = int(abs(diverge) - max_diverge - 1.0F);
        if (divisor < 1)
            divisor=1;
        avsync_next = avsync_interval/divisor;
    }

    bool max_video_behind = diverge < -max_diverge;
    bool dropframe = false;
    QString dbg;

    if (avsync_predictor_enabled)
    {
        avsync_predictor += frame_interval + avsync_adjustment + repeat_delay;
        if (avsync_predictor >= refreshrate)
        {
            int refreshperiodsinframe = avsync_predictor/refreshrate;
            avsync_predictor -= refreshrate * refreshperiodsinframe;
        }
        else
        {
            dropframe = !FlagIsSet(kMusicChoice);
            dbg = QString("A/V predict drop frame, refreshrate %1, avsync_predictor %2, diverge %3, ")
            .arg(refreshrate).arg(avsync_predictor).arg(diverge);
        }
    }

    if (max_video_behind)
    {
        dropframe = !FlagIsSet(kMusicChoice);
        // If video is way behind of audio, adjust for it...
        dbg = QString("Video is %1 frames behind audio (too slow), ")
            .arg(-diverge);
    }

    if (!dropframe && avsync_audiopaused)
    {
        avsync_audiopaused = false;
        audio.Pause(false);
    }

    if (!dropframe)
    {
        // PGB this was orignally in the calling methods
        // MythPlayer::DisplayNormalFrame and MythDVDPlayer::DisplayLastFrame
        // Moved here to reduce CPU usage since the OSD was being merged
        // into frames that were not being displayed, thereby causing
        // interruptions and slowdowns.
        osdLock.lock();
        videoOutput->ProcessFrame(buffer, osd, pip_players, ps);
        osdLock.unlock();
    }

    if (dropframe)
    {
        // Reset A/V Sync
        lastsync = true;
        //currentaudiotime = AVSyncGetAudiotime();
        LOG(VB_PLAYBACK, LOG_INFO, LOC + dbg + "dropping frame to catch up.");
        if (max_video_behind)
        {
            audio.Pause(true);
            avsync_audiopaused = true;
        }
    }
    else if (!FlagIsSet(kVideoIsNull))
    {
        // if we get here, we're actually going to do video output
        osdLock.lock();
        videoOutput->PrepareFrame(buffer, ps, osd);
        osdLock.unlock();
        // Don't wait for sync if this is a secondary PBP otherwise
        // the primary PBP will become out of sync
        if (!player_ctx->IsPBP() || player_ctx->IsPrimaryPBP())
        {
            LOG(VB_PLAYBACK | VB_TIMESTAMP, LOG_INFO,
                LOC + QString("AVSync waitforframe %1 %2 %3")
                    .arg(frameDelay).arg(avsync_adjustment).arg(m_double_framerate));
            vsync_delay_clock = videosync->WaitForFrame(frameDelay, avsync_adjustment + repeat_delay);
        }
        else
        {
            vsync_delay_clock = 0;
            lastsync = true;
        }
        //currentaudiotime = AVSyncGetAudiotime();
        LOG(VB_PLAYBACK | VB_TIMESTAMP, LOG_INFO, LOC + "AVSync show");
        videoOutput->Show(ps);

        if (videoOutput->IsErrored())
        {
            LOG(VB_GENERAL, LOG_ERR, LOC + "Error condition detected "
                    "in videoOutput after Show(), aborting playback.");
            SetErrored(tr("Serious error detected in Video Output"));
            return;
        }

        if (m_double_framerate)
        {
            // second stage of deinterlacer processing
            if (ps == kScan_Interlaced)
                ps = kScan_Intr2ndField;
            osdLock.lock();
            // Only double rate CPU deinterlacers require an extra call to ProcessFrame
            if (GetDoubleRateOption(buffer, DEINT_CPU) && !GetDoubleRateOption(buffer, DEINT_SHADER))
                videoOutput->ProcessFrame(buffer, osd, pip_players, ps);
            videoOutput->PrepareFrame(buffer, ps, osd);
            osdLock.unlock();
            // Display the second field
            if (!player_ctx->IsPBP() || player_ctx->IsPrimaryPBP())
            {
                LOG(VB_PLAYBACK | VB_TIMESTAMP, LOG_INFO, LOC + QString("AVSync waitforframe %1 %2 %3")
                        .arg(frameDelay).arg(avsync_adjustment).arg(m_double_framerate));
                vsync_delay_clock = videosync->WaitForFrame(frameDelay, avsync_adjustment);
            }
            videoOutput->Show(ps);
        }

        repeat_delay = frame_interval * repeat_pict * 0.5;

        if (repeat_delay)
            LOG(VB_TIMESTAMP, LOG_INFO, LOC +
                QString("A/V repeat_pict, adding %1 repeat delay")
                    .arg(repeat_delay));
    }
    else
    {
        vsync_delay_clock = videosync->WaitForFrame(frameDelay, 0);
        //currentaudiotime = AVSyncGetAudiotime();
    }

    if (output_jmeter && output_jmeter->RecordCycleTime())
    {
        LOG(VB_PLAYBACK | VB_TIMESTAMP, LOG_INFO, LOC +
            QString("A/V avsync_delay: %1, avsync_avg: %2")
                .arg(avsync_delay / 1000).arg(avsync_avg / 1000));
    }

    avsync_adjustment = 0;

    if (diverge > max_diverge)
    {
        // If audio is way behind of video, adjust for it...
        // by cutting the frame rate in half for the length of this frame
        avsync_adjustment = frame_interval;
        lastsync = true;
        LOG(VB_PLAYBACK, LOG_INFO, LOC +
            QString("Video is %1 frames ahead of audio,\n"
                    "\t\t\tdoubling video frame interval to slow down.")
                .arg(diverge));
    }

    if (audio.HasAudioOut() && normal_speed)
    {
        // must be sampled here due to Show delays
        int64_t currentaudiotime = audio.GetAudioTime();
        LOG(VB_PLAYBACK | VB_TIMESTAMP, LOG_INFO, LOC +
            QString("A/V timecodes audio %1 video %2 frameinterval %3 "
                    "avdel %4 avg %5 tcoffset %6 avp %7 avpen %8 avdc %9 "
                    "diverge %10")
                .arg(currentaudiotime)
                .arg(timecode)
                .arg(frame_interval)
                .arg(timecode - currentaudiotime -
                     (int)(vsync_delay_clock*audio.GetStretchFactor()+500)/1000)
                .arg(avsync_avg)
                .arg(tc_wrap[TC_AUDIO])
                .arg(avsync_predictor)
                .arg(avsync_predictor_enabled)
                .arg(vsync_delay_clock)
                .arg(diverge)
                 );
        if (currentaudiotime != 0 && timecode != 0)
        { // currentaudiotime == 0 after a seek
            // The time at the start of this frame (ie, now) is given by
            // last->timecode
            if (prevtc != 0)
            {
                int delta = (int)((timecode - prevtc)/play_speed) -
                                  (frame_interval / 1000);
                // If timecode is off by a frame (dropped frame) wait to sync
                if (delta > frame_interval / 1200 &&
                    delta < frame_interval / 1000 * 3 &&
                    prevrp == 0)
                {
                    // wait an extra frame interval
                    LOG(VB_PLAYBACK | VB_TIMESTAMP, LOG_INFO, LOC +
                        QString("A/V delay %1").arg(delta));
                    avsync_adjustment += frame_interval;
                    // If we're duplicating a frame, it may be because
                    // the container frame rate doesn't match the
                    // stream frame rate.  In this case, we increment
                    // the fake frame counter so that avformat
                    // timestamp-based seeking will work.
                    if (!decoder->HasPositionMap())
                        ++framesPlayedExtra;
                }
            }
            prevtc = timecode;
            prevrp = repeat_pict;

            // usec
            avsync_delay = (timecode - currentaudiotime) * 1000 -
                            (int)(vsync_delay_clock*audio.GetStretchFactor());

            // prevents major jitter when pts resets during dvd title
            if (avsync_delay > 2000000 && limit_delay)
                avsync_delay = 90000;
            avsync_avg = (avsync_delay + (avsync_avg * (avsync_averaging-1))) / avsync_averaging;

            int avsync_used = avsync_avg;
            if (labs(avsync_used) > labs(avsync_delay))
                avsync_used = avsync_delay;

            /* If the audio time codes and video diverge, shift
               the video by one interlaced field (1/2 frame) */
            if (!lastsync)
            {
                if (avsync_used > refreshrate)
                {
                    avsync_adjustment += refreshrate;
                }
                else if (avsync_used < 0 - refreshrate)
                {
                    avsync_adjustment -= refreshrate;
                }
            }
            else
                lastsync = false;
        }
        else
        {
            ResetAVSync();
        }
    }
    else
    {
        LOG(VB_PLAYBACK | VB_TIMESTAMP, LOG_INFO, LOC +
            QString("A/V no sync proc ns:%1").arg(normal_speed));
    }
}

void MythPlayer::WaitForTime(int64_t framedue)
{
    int64_t unow = m_avTimer.nsecsElapsed() / 1000;
    int64_t delay = framedue - unow;
    if (delay > 0)
        QThread::usleep(static_cast<unsigned long>(delay));
}

#define AVSYNC_MAX_LATE 10000000
void MythPlayer::AVSync2(VideoFrame *buffer)
{
    if (videoOutput->IsErrored())
    {
        LOG(VB_GENERAL, LOG_ERR, LOC +
            "AVSync: Unknown error in videoOutput, aborting playback.");
        SetErrored(tr("Failed to initialize A/V Sync"));
        return;
    }
    int64_t videotimecode = 0;

    bool dropframe = false;
    bool pause_audio = false;
    int64_t framedue = 0;
    int64_t audio_adjustment = 0;
    int64_t unow = 0;
    int64_t lateness = 0;
    auto playspeed1000 = static_cast<int64_t>(1000.0F / play_speed);
    bool reset = false;

    while (framedue == 0)
    {
        if (buffer)
        {
            videotimecode = buffer->timecode & 0x0000ffffffffffff;
            // Detect bogus timecodes from DVD and ignore them.
            if (videotimecode != buffer->timecode)
                videotimecode = maxtcval;
        }

        unow = m_avTimer.nsecsElapsed() / 1000;

        if (!normal_speed || FlagIsSet(kMusicChoice))
        {
            framedue = unow + frame_interval;
            break;
        }
        // first time or after a seek - setup of rtcbase
        if (rtcbase == 0)
        {
            // cater for DVB radio
            if (videotimecode == 0)
                videotimecode = audio.GetAudioTime();;
            // On first frame we get nothing, so exit out.
            if (videotimecode == 0)
                return;
            rtcbase = unow - videotimecode * playspeed1000;
            maxtcval = 0;
            maxtcframes = 0;
            numdroppedframes = 0;
            m_timeOffsetBase = static_cast<int64_t>(TranslatePositionFrameToMs(framesPlayed, false)) - videotimecode;
        }

        if (videotimecode == 0)
            videotimecode = maxtcval + frame_interval/1000;
        int64_t tcincr = videotimecode - maxtcval;
        if (tcincr > 0 || tcincr < -100)
        {
            maxtcval = videotimecode;
            maxtcframes = 0;
        }
        else
        {
            maxtcframes++;
            videotimecode = maxtcval + maxtcframes * frame_interval/1000;
        }

        if (play_speed > 0.0F)
            framedue = rtcbase + videotimecode * playspeed1000;
        else
            framedue = unow + frame_interval / 2;

        // recalculate framesPlayed to conform to actual time code.
        framesPlayed = TranslatePositionMsToFrame(static_cast<uint64_t>(videotimecode + m_timeOffsetBase), false);
        decoder->SetFramesPlayed(static_cast<long long>(framesPlayed));

        lateness = unow - framedue;
        dropframe = false;
        if (lateness > 30000)
            dropframe = numdroppedframes < 10;

        if (lateness <= 30000 && prior_audiotimecode > 0
            && prior_videotimecode > 0)
        {
            // Get video in sync with audio
            audio_adjustment = prior_audiotimecode - prior_videotimecode;
            // If there is excess audio - throw it away.
            if (audio_adjustment < -200)
            {
                audio.Reset();
                audio_adjustment = 0;
            }
            int sign = audio_adjustment < 0 ? -1 : 1;
            int64_t fix_amount = audio_adjustment * sign;
            if (fix_amount > avsync2adjustms)
                fix_amount = avsync2adjustms;
            // Faster catch-up when off by more than 200 ms
            if (audio_adjustment * sign > 200)
                // fix the sync within 15 - 20 frames
                fix_amount = audio_adjustment * sign / 15;
            auto speedup1000 = static_cast<int64_t>(1000 * play_speed);
            rtcbase -= static_cast<int64_t>(1000000 * fix_amount * sign / speedup1000);
            if (audio_adjustment * sign > 20 || (framesPlayed % 400 == 0))
                LOG(VB_PLAYBACK, LOG_INFO, LOC + QString("AV Sync: Audio %1 by %2 ms")
                    .arg(audio_adjustment > 0 ? "ahead" : "behind").arg(abs(audio_adjustment)));
            if (audio_adjustment > 200)
                pause_audio = true;
        }
        // sanity check - reset rtcbase if time codes have gone crazy.
        if ((lateness > AVSYNC_MAX_LATE || lateness < - AVSYNC_MAX_LATE))
        {
            framedue = 0;
            rtcbase = 0;
            if (reset)
            {
                LOG(VB_GENERAL, LOG_ERR, LOC +
                    QString("Resetting AV Sync2 failed, lateness = %1").arg(lateness));
                SetErrored(tr("Failed to initialize A/V Sync"));
                return;
            }
            LOG(VB_PLAYBACK, LOG_INFO, LOC +
                QString("Resetting AV Sync2, lateness = %1").arg(lateness));
            reset = true;
        }
    }
    prior_videotimecode = videotimecode;
    disp_timecode = videotimecode;

    output_jmeter && output_jmeter->RecordCycleTime();
    avsync_avg = static_cast<int>(audio_adjustment * 1000);

    bool decoderdeint = buffer && buffer->decoder_deinterlaced;
    FrameScanType ps = m_scan;
    if (kScan_Detect == m_scan || kScan_Ignore == m_scan || decoderdeint)
    {
        ps = kScan_Progressive;
    }
    else if (buffer && is_interlaced(ps))
    {
        ps = kScan_Interlaced;
        buffer->interlaced_reversed = m_scan == kScan_Intr2ndField;
    }

    // only display the second field if needed
    m_double_framerate = is_interlaced(ps) && m_lastDeinterlacer2x;

    if (buffer && !dropframe)
    {
        osdLock.lock();
        videoOutput->ProcessFrame(buffer, osd, pip_players, ps);
        osdLock.unlock();
    }

    if (!pause_audio && avsync_audiopaused)
    {
        avsync_audiopaused = false;
        audio.Pause(false);
    }
    if (pause_audio && !avsync_audiopaused)
    {
        avsync_audiopaused = true;
        audio.Pause(true);
    }

    if (dropframe)
        numdroppedframes++;
    else
        numdroppedframes = 0;

    if (dropframe)
        LOG(VB_PLAYBACK, LOG_INFO, LOC +
            QString("dropping frame to catch up, lateness=%1 usec")
                .arg(lateness));
    else if (!FlagIsSet(kVideoIsNull) && buffer)
    {
        // if we get here, we're actually going to do video output
        osdLock.lock();
        videoOutput->PrepareFrame(buffer, ps, osd);
        osdLock.unlock();
        // Don't wait for sync if this is a secondary PBP otherwise
        // the primary PBP will become out of sync
        if (!player_ctx->IsPBP() || player_ctx->IsPrimaryPBP())
            WaitForTime(framedue);
        // get time codes for calculating difference next time
        prior_audiotimecode = audio.GetAudioTime();
        videoOutput->Show(ps);
        if (videoOutput->IsErrored())
        {
            LOG(VB_GENERAL, LOG_ERR, LOC + "Error condition detected "
                    "in videoOutput after Show(), aborting playback.");
            SetErrored(tr("Serious error detected in Video Output"));
            return;
        }
        if (m_double_framerate)
        {
            //second stage of deinterlacer processing
            if (kScan_Interlaced == ps)
                ps = kScan_Intr2ndField;
            osdLock.lock();
            // Only double rate CPU deinterlacers require an extra call to ProcessFrame
            if (GetDoubleRateOption(buffer, DEINT_CPU) && !GetDoubleRateOption(buffer, DEINT_SHADER))
                videoOutput->ProcessFrame(buffer, osd, pip_players, ps);
            videoOutput->PrepareFrame(buffer, ps, osd);
            osdLock.unlock();
            // Display the second field
            if (!player_ctx->IsPBP() || player_ctx->IsPrimaryPBP())
            {
                int64_t due = framedue + frame_interval / 2;
                WaitForTime(due);
            }
            videoOutput->Show(ps);
        }
    }
    else
        WaitForTime(framedue);

    LOG(VB_PLAYBACK | VB_TIMESTAMP, LOG_INFO, LOC +
        QString("A/V timecodes audio=%1 video=%2 frameinterval=%3 "
                "audioadj=%4 tcoffset=%5 unow=%6 udue=%7")
            .arg(prior_audiotimecode)
            .arg(prior_videotimecode)
            .arg(frame_interval)
            .arg(audio_adjustment)
            .arg(tc_wrap[TC_AUDIO])
            .arg(unow)
            .arg(framedue)
                );

}

void MythPlayer::RefreshPauseFrame(void)
{
    if (needNewPauseFrame)
    {
        if (videoOutput->ValidVideoFrames())
        {
            videoOutput->UpdatePauseFrame(disp_timecode);
            needNewPauseFrame = false;

            if (deleteMap.IsEditing())
            {
                osdLock.lock();
                if (osd)
                    DeleteMap::UpdateOSD(GetLatestVideoTimecode(), osd);
                osdLock.unlock();
            }
        }
        else
        {
            decodeOneFrame = true;
        }
    }
}

void MythPlayer::DisplayPauseFrame(void)
{
    if (!videoOutput || ! videosync)
        return;

    if (videoOutput->IsErrored())
    {
        SetErrored(tr("Serious error detected in Video Output"));
        return;
    }

    // clear the buffering state
    SetBuffering(false);

    RefreshPauseFrame();
    PreProcessNormalFrame(); // Allow interactiveTV to draw on pause frame

    FrameScanType scan = (kScan_Detect == m_scan || kScan_Ignore == m_scan) ? kScan_Progressive : m_scan;
    osdLock.lock();
    videoOutput->ProcessFrame(nullptr, osd, pip_players);
    videoOutput->PrepareFrame(nullptr, scan, osd);
    osdLock.unlock();
    videoOutput->Show(scan);
    videosync->Start();
}

void MythPlayer::SetBuffering(bool new_buffering)
{
    if (!buffering && new_buffering)
    {
        LOG(VB_PLAYBACK, LOG_INFO, LOC + "Waiting for video buffers...");
        buffering = true;
        buffering_start = QTime::currentTime();
        buffering_last_msg = QTime::currentTime();
    }
    else if (buffering && !new_buffering)
    {
        buffering = false;
    }
}

// For debugging playback set this to increase the timeout so that
// playback does not fail if stepping through code.
// Set PREBUFFERDEBUG to any value and you will get 30 minutes.
static char *preBufferDebug = getenv("PREBUFFERDEBUG");

bool MythPlayer::PrebufferEnoughFrames(int min_buffers)
{
    if (!videoOutput)
        return false;

    if (!(min_buffers ? (videoOutput->ValidVideoFrames() >= min_buffers) :
                        (GetEof() != kEofStateNone) || videoOutput->EnoughDecodedFrames()))
    {
        SetBuffering(true);

        // This piece of code is to address the problem, when starting
        // Live TV, of jerking and stuttering. Without this code
        // that could go on forever, but is cured by a pause and play.
        // This code inserts a brief pause and play when the potential
        // for the jerking is detected.

        bool watchingTV = IsWatchingInprogress();
        if ( (livetv || watchingTV) && !FlagIsSet(kMusicChoice))
        {
            uint64_t frameCount = GetCurrentFrameCount();
            uint64_t framesLeft = frameCount - framesPlayed;
            auto margin = (uint64_t) (video_frame_rate * 3);
            if (framesLeft < margin)
            {
                if (rtcbase)
                    LOG(VB_PLAYBACK, LOG_NOTICE, LOC +
                        QString("Pause to allow live tv catch up. Position in sec. Current: %2, Total: %3")
                        .arg(framesPlayed).arg(frameCount));
                audio.Pause(true);
                avsync_audiopaused = true;
                rtcbase = 0;
            }
        }
        usleep(frame_interval >> 3);
        int waited_for = buffering_start.msecsTo(QTime::currentTime());
        int last_msg = buffering_last_msg.msecsTo(QTime::currentTime());
        if (last_msg > 100 && !FlagIsSet(kMusicChoice))
        {
            if (++bufferingCounter == 10)
                LOG(VB_GENERAL, LOG_NOTICE, LOC +
                    "To see more buffering messages use -v playback");
            if (bufferingCounter >= 10)
                LOG(VB_PLAYBACK, LOG_NOTICE, LOC +
                    QString("Waited %1ms for video buffers %2")
                    .arg(waited_for).arg(videoOutput->GetFrameStatus()));
            else
                LOG(VB_GENERAL, LOG_NOTICE, LOC +
                    QString("Waited %1ms for video buffers %2")
                        .arg(waited_for).arg(videoOutput->GetFrameStatus()));
            buffering_last_msg = QTime::currentTime();
            if (audio.IsBufferAlmostFull() && framesPlayed < 5
                && gCoreContext->GetBoolSetting("MusicChoiceEnabled", false))
            {
                playerFlags = (PlayerFlags)(playerFlags | kMusicChoice);
                LOG(VB_GENERAL, LOG_NOTICE, LOC +
                    "Music Choice program detected - disabling AV Sync.");
                avsync_audiopaused = false;
                audio.Pause(false);
            }
            if (waited_for > 7000 && audio.IsBufferAlmostFull()
                && !FlagIsSet(kMusicChoice))
            {
                // We are likely to enter this condition
                // if the audio buffer was too full during GetFrame in AVFD
                LOG(VB_GENERAL, LOG_NOTICE, LOC + "Resetting audio buffer");
                audio.Reset();
            }
            // Finish audio pause for sync after 1 second
            // in case of infrequent video frames (e.g. music choice)
            if (avsync_audiopaused && waited_for > 1000)
            {
                avsync_audiopaused = false;
                audio.Pause(false);
            }
        }
        int msecs = 500;
        if (preBufferDebug)
            msecs = 1800000;
        if ((waited_for > msecs /*500*/) && !videoOutput->EnoughFreeFrames())
        {
            LOG(VB_GENERAL, LOG_NOTICE, LOC +
                "Timed out waiting for frames, and"
                "\n\t\t\tthere are not enough free frames. "
                "Discarding buffered frames.");
            // This call will result in some ugly frames, but allows us
            // to recover from serious problems if frames get leaked.
            DiscardVideoFrames(true, true);
        }
        msecs = 30000;
        if (preBufferDebug)
            msecs = 1800000;
        if (waited_for > msecs /*30000*/) // 30 seconds for internet streamed media
        {
            LOG(VB_GENERAL, LOG_ERR, LOC +
                "Waited too long for decoder to fill video buffers. Exiting..");
            SetErrored(tr("Video frame buffering failed too many times."));
        }
        if (normal_speed)
            videosync->Start();
        return false;
    }

    SetBuffering(false);
    return true;
}

void MythPlayer::CheckAspectRatio(VideoFrame* frame)
{
    if (!frame)
        return;

    if (!qFuzzyCompare(frame->aspect, video_aspect) && frame->aspect > 0.0F)
    {
        LOG(VB_PLAYBACK, LOG_INFO, LOC +
            QString("Video Aspect ratio changed from %1 to %2")
            .arg(video_aspect).arg(frame->aspect));
        video_aspect = frame->aspect;
        if (videoOutput)
        {
            videoOutput->VideoAspectRatioChanged(video_aspect);
            ReinitOSD();
        }
    }
}

void MythPlayer::DisplayNormalFrame(bool check_prebuffer)
{
    if (allpaused || (check_prebuffer && !PrebufferEnoughFrames()))
        return;

    // clear the buffering state
    SetBuffering(false);

    // If PiP then release the last shown frame to the decoding queue
    if (player_ctx->IsPIP())
        videoOutput->DoneDisplayingFrame(videoOutput->GetLastShownFrame());

    // retrieve the next frame
    videoOutput->StartDisplayingFrame();
    VideoFrame *frame = videoOutput->GetLastShownFrame();

    // Check aspect ratio
    CheckAspectRatio(frame);

    if (decoder && m_fpsMultiplier != decoder->GetfpsMultiplier())
        UpdateFFRewSkip();

    // Player specific processing (dvd, bd, mheg etc)
    PreProcessNormalFrame();

    // handle scan type changes
    AutoDeint(frame);
    detect_letter_box->SwitchTo(frame);

    AVSync(frame, false);

    // If PiP then keep this frame for MythPlayer::GetCurrentFrame
    if (!player_ctx->IsPIP())
    {
        m_lastDeinterlacer = frame->deinterlace_inuse;
        m_lastDeinterlacer2x = frame->deinterlace_inuse2x;
        // We use the underlying pix_fmt as it retains the distinction between hardware
        // and software frames for decode only decoders.
        m_lastFrameCodec = PixelFormatToFrameType(static_cast<AVPixelFormat>(frame->pix_fmt));
        videoOutput->DoneDisplayingFrame(frame);
    }
}

void MythPlayer::PreProcessNormalFrame(void)
{
#ifdef USING_MHEG
    // handle Interactive TV
    if (GetInteractiveTV())
    {
        osdLock.lock();
        itvLock.lock();
        if (osd && videoOutput->GetOSDPainter())
        {
            InteractiveScreen *window =
                dynamic_cast<InteractiveScreen *>(osd->GetWindow(OSD_WIN_INTERACT));
            if ((interactiveTV->ImageHasChanged() || !itvVisible) && window)
            {
                interactiveTV->UpdateOSD(window, videoOutput->GetOSDPainter());
                itvVisible = true;
            }
        }
        itvLock.unlock();
        osdLock.unlock();
    }
#endif // USING_MHEG
}

bool MythPlayer::CanSupportDoubleRate(void)
{
    int refreshinterval = 1;
    if (videosync)
    {
        refreshinterval = videosync->getRefreshInterval();
    }
    else if (m_display)
    {
        // used by the decoder before videosync is created
        refreshinterval = m_display->GetDisplayInfo(frame_interval).Rate();
    }

    // At this point we may not have the correct frame rate.
    // Since interlaced is always at 25 or 30 fps, if the interval
    // is less than 30000 (33fps) it must be representing one
    // field and not one frame, so multiply by 2.
    int realfi = frame_interval;
    if (frame_interval < 30000)
        realfi = frame_interval * 2;
    return ((realfi / 2.0) > (refreshinterval * 0.995));
}

void MythPlayer::EnableFrameRateMonitor(bool enable)
{
    if (!output_jmeter)
        return;
    bool verbose = VERBOSE_LEVEL_CHECK(VB_PLAYBACK, LOG_ANY);
    double rate = enable ? video_frame_rate : verbose ? (video_frame_rate * 4) : 0.0;
    output_jmeter->SetNumCycles(static_cast<int>(rate));
}

void MythPlayer::ForceDeinterlacer(bool DoubleRate, MythDeintType Deinterlacer)
{
    if (videoOutput)
        videoOutput->SetDeinterlacing(true, DoubleRate, Deinterlacer);
}

void MythPlayer::VideoStart(void)
{
    if (!FlagIsSet(kVideoIsNull) && !player_ctx->IsPIP())
    {
        QRect visible, total;
        float aspect, scaling;

        osdLock.lock();
        osd = new OSD(this, m_tv, videoOutput->GetOSDPainter());
        videoOutput->GetOSDBounds(total, visible, aspect, scaling, 1.0F);
        osd->Init(visible, aspect);
        osd->EnableSubtitles(kDisplayNone);

#ifdef USING_MHEG
        if (GetInteractiveTV())
        {
            QMutexLocker locker(&itvLock);
            interactiveTV->Reinit(total, visible, aspect);
        }
#endif // USING_MHEG

        // If there is a forced text subtitle track (which is possible
        // in e.g. a .mkv container), and forced subtitles are
        // allowed, then start playback with that subtitle track
        // selected.  Otherwise, use the frontend settings to decide
        // which captions/subtitles (if any) to enable at startup.
        // TODO: modify the fix to #10735 to use this approach
        // instead.
        bool hasForcedTextTrack = false;
        uint forcedTrackNumber = 0;
        if (GetAllowForcedSubtitles())
        {
            uint numTextTracks = decoder->GetTrackCount(kTrackTypeRawText);
            for (uint i = 0; !hasForcedTextTrack && i < numTextTracks; ++i)
            {
                if (decoder->GetTrackInfo(kTrackTypeRawText, i).m_forced)
                {
                    hasForcedTextTrack = true;
                    forcedTrackNumber = i;
                }
            }
        }
        if (hasForcedTextTrack)
            SetTrack(kTrackTypeRawText, forcedTrackNumber);
        else
            SetCaptionsEnabled(captionsEnabledbyDefault, false);

        osdLock.unlock();
    }

    SetPlaying(true);
    ClearAfterSeek(false);

    avsync_delay = 0;
    avsync_avg = 0;
    avsync_next = avsync_interval;      // Frames till next sync check
    refreshrate = 0;
    lastsync = false;

    EnableFrameRateMonitor();
    refreshrate = frame_interval;

    float temp_speed = (play_speed == 0.0F) ? audio.GetStretchFactor() : play_speed;
    int fr_int = (1000000.0 / video_frame_rate / static_cast<double>(temp_speed));
    int rf_int = m_display->GetDisplayInfo(fr_int).Rate();

    // Default to interlaced playback but set the tracker to progressive
    // Enable autodetection of interlaced/progressive from video stream
    // Previously we set to interlaced and the scan tracker to 2 but this
    // mis-'detected' a number of streams as interlaced when they are progressive.
    // This significantly reduces the number of errors and also ensures we do not
    // needlessly setup deinterlacers - which may consume significant resources.
    // We set to interlaced for those streams whose frame rate is initially detected
    // as e.g. 59.9 when it is actually 29.97 interlaced.
    m_scan             = kScan_Interlaced;
    m_scan_locked      = false;
    m_double_framerate = false;
    m_scan_tracker     = -2;

    if (player_ctx->IsPIP() && FlagIsSet(kVideoIsNull))
    {
        videosync = new DummyVideoSync(videoOutput, 0);
    }
    else if (FlagIsSet(kVideoIsNull))
    {
        videosync = new USleepVideoSync(videoOutput, 0);
    }
    else if (videoOutput)
    {
        videosync = VideoSync::BestMethod(videoOutput, static_cast<uint>(rf_int));
        m_double_framerate = CanSupportDoubleRate(); // needs videosync
        videoOutput->SetDeinterlacing(true, m_double_framerate);
    }

    if (!videosync)
        videosync = new BusyWaitVideoSync(videoOutput, rf_int);

    InitAVSync();
    videosync->Start();
}

bool MythPlayer::VideoLoop(void)
{
    if (videoPaused || isDummy)
    {
        switch (player_ctx->GetPIPState())
        {
          case kPIPonTV:
          case kPBPRight:
            break;
          case kPIPOff:
          case kPIPStandAlone:
          case kPBPLeft:  // PrimaryBPB
            usleep(frame_interval);
            break;
        }
        DisplayPauseFrame();
    }
    else
        DisplayNormalFrame();

    if (FlagIsSet(kVideoIsNull) && decoder)
        decoder->UpdateFramesPlayed();
    else if (decoder && decoder->GetEof() != kEofStateNone)
        ++framesPlayed;
    else
        framesPlayed = videoOutput->GetFramesPlayed() + framesPlayedExtra;
    return !IsErrored();
}

void MythPlayer::VideoEnd(void)
{
    osdLock.lock();
    vidExitLock.lock();
    delete osd;
    delete videosync;
    delete videoOutput;
    osd         = nullptr;
    videosync   = nullptr;
    videoOutput = nullptr;
    vidExitLock.unlock();
    osdLock.unlock();
}

bool MythPlayer::FastForward(float seconds)
{
    if (!videoOutput)
        return false;

    if (fftime <= 0)
    {
        float current   = ComputeSecs(framesPlayed, true);
        float dest      = current + seconds;
        float length    = ComputeSecs(totalFrames, true);

        if (dest > length)
        {
            int64_t pos = TranslatePositionMsToFrame(seconds * 1000, false);
            if (CalcMaxFFTime(pos) < 0)
                return true;
            // Reach end of recording, go to 1 or 3s before the end
            dest = (livetv || IsWatchingInprogress()) ? -3.0 : -1.0;
        }
        uint64_t target = FindFrame(dest, true);
        fftime = target - framesPlayed;
    }
    return fftime > CalcMaxFFTime(fftime, false);
}

bool MythPlayer::Rewind(float seconds)
{
    if (!videoOutput)
        return false;

    if (rewindtime <= 0)
    {
        float current = ComputeSecs(framesPlayed, true);
        float dest = current - seconds;
        if (dest < 0)
        {
            int64_t pos = TranslatePositionMsToFrame(seconds * 1000, false);
            if (CalcRWTime(pos) < 0)
                return true;
            dest = 0;
        }
        uint64_t target = FindFrame(dest, true);
        rewindtime = framesPlayed - target;
    }
    return (uint64_t)rewindtime >= framesPlayed;
}

bool MythPlayer::JumpToFrame(uint64_t frame)
{
    if (!videoOutput)
        return false;

    bool ret = false;
    fftime = rewindtime = 0;
    if (frame > framesPlayed)
    {
        fftime = frame - framesPlayed;
        ret = fftime > CalcMaxFFTime(fftime, false);
    }
    else if (frame < framesPlayed)
    {
        rewindtime = framesPlayed - frame;
        ret = fftime > CalcMaxFFTime(fftime, false);
    }
    return ret;
}


void MythPlayer::JumpChapter(int chapter)
{
    if (jumpchapter == 0)
        jumpchapter = chapter;
}

void MythPlayer::ResetPlaying(bool resetframes)
{
    ClearAfterSeek();
    ffrew_skip = 1;
    if (resetframes)
        framesPlayed = framesPlayedExtra = 0;
    if (decoder)
    {
        decoder->Reset(true, true, true);
        if (decoder->IsErrored())
            SetErrored("Unable to reset video decoder");
    }
}

void MythPlayer::CheckTVChain(void)
{
    bool last = !(player_ctx->m_tvchain->HasNext());
    SetWatchingRecording(last);
}

void MythPlayer::SwitchToProgram(void)
{
    if (!IsReallyNearEnd())
        return;

    LOG(VB_PLAYBACK, LOG_INFO, LOC + "SwitchToProgram - start");
    bool discontinuity = false, newtype = false;
    int newid = -1;
    ProgramInfo *pginfo = player_ctx->m_tvchain->GetSwitchProgram(
        discontinuity, newtype, newid);
    if (!pginfo)
        return;

    bool newIsDummy = player_ctx->m_tvchain->GetInputType(newid) == "DUMMY";

    SetPlayingInfo(*pginfo);
    Pause();
    ChangeSpeed();

    // Release all frames to ensure the current decoder resources are released
    DiscardVideoFrames(true, true);

    if (newIsDummy)
    {
        OpenDummy();
        ResetPlaying();
        SetEof(kEofStateNone);
        delete pginfo;
        return;
    }

    if (player_ctx->m_buffer->GetType() == ICRingBuffer::kRingBufferType)
    {
        // Restore original ringbuffer
        auto *ic = dynamic_cast< ICRingBuffer* >(player_ctx->m_buffer);
        if (ic) // should always be true
            player_ctx->m_buffer = ic->Take();
        delete ic;
    }

    player_ctx->m_buffer->OpenFile(
        pginfo->GetPlaybackURL(), RingBuffer::kLiveTVOpenTimeout);

    if (!player_ctx->m_buffer->IsOpen())
    {
        LOG(VB_GENERAL, LOG_ERR, LOC + "SwitchToProgram's OpenFile failed " +
            QString("(input type: %1).")
            .arg(player_ctx->m_tvchain->GetInputType(newid)));
        LOG(VB_GENERAL, LOG_ERR, player_ctx->m_tvchain->toString());
        SetEof(kEofStateImmediate);
        SetErrored(tr("Error opening switch program buffer"));
        delete pginfo;
        return;
    }

    if (GetEof() != kEofStateNone)
    {
        discontinuity = true;
        ResetCaptions();
    }

    LOG(VB_PLAYBACK, LOG_INFO, LOC + QString("SwitchToProgram(void) "
        "discont: %1 newtype: %2 newid: %3 decoderEof: %4")
        .arg(discontinuity).arg(newtype).arg(newid).arg(GetEof()));

    if (discontinuity || newtype)
    {
        player_ctx->m_tvchain->SetProgram(*pginfo);
        if (decoder)
            decoder->SetProgramInfo(*pginfo);

        player_ctx->m_buffer->Reset(true);
        if (newtype)
        {
            if (OpenFile() < 0)
                SetErrored(tr("Error opening switch program file"));
        }
        else
            ResetPlaying();
    }
    else
    {
        player_ctx->SetPlayerChangingBuffers(true);
        if (decoder)
        {
            decoder->SetReadAdjust(player_ctx->m_buffer->SetAdjustFilesize());
            decoder->SetWaitForChange();
        }
    }
    delete pginfo;

    if (IsErrored())
    {
        LOG(VB_GENERAL, LOG_ERR, LOC + "SwitchToProgram failed.");
        SetEof(kEofStateDelayed);
        return;
    }

    SetEof(kEofStateNone);

    // the bitrate is reset by player_ctx->m_buffer->OpenFile()...
    if (decoder)
        player_ctx->m_buffer->UpdateRawBitrate(decoder->GetRawBitrate());
    player_ctx->m_buffer->Unpause();

    if (discontinuity || newtype)
    {
        CheckTVChain();
        forcePositionMapSync = true;
    }

    Play();
    LOG(VB_PLAYBACK, LOG_INFO, LOC + "SwitchToProgram - end");
}

// This is called from decoder thread. Set an indicator that will
// be checked and actioned in the player thread.
void MythPlayer::FileChangedCallback(void)
{
    LOG(VB_PLAYBACK, LOG_INFO, LOC + "FileChangedCallback");
    fileChanged = true;
}

// Called from the player thread.
void MythPlayer::FileChanged(void)
{
    fileChanged = false;
    LOG(VB_PLAYBACK, LOG_INFO, LOC + "FileChanged");

    Pause();
    ChangeSpeed();
    if (dynamic_cast<AvFormatDecoder *>(decoder))
        player_ctx->m_buffer->Reset(false, true);
    else
        player_ctx->m_buffer->Reset(false, true, true);
    SetEof(kEofStateNone);
    Play();

    player_ctx->SetPlayerChangingBuffers(false);

    player_ctx->LockPlayingInfo(__FILE__, __LINE__);
    player_ctx->m_tvchain->SetProgram(*player_ctx->m_playingInfo);
    if (decoder)
        decoder->SetProgramInfo(*player_ctx->m_playingInfo);
    player_ctx->UnlockPlayingInfo(__FILE__, __LINE__);

    CheckTVChain();
    forcePositionMapSync = true;
}




void MythPlayer::JumpToProgram(void)
{
    LOG(VB_PLAYBACK, LOG_INFO, LOC + "JumpToProgram - start");
    bool discontinuity = false, newtype = false;
    int newid = -1;
    long long nextpos = player_ctx->m_tvchain->GetJumpPos();
    ProgramInfo *pginfo = player_ctx->m_tvchain->GetSwitchProgram(
        discontinuity, newtype, newid);
    if (!pginfo)
        return;

    inJumpToProgramPause = true;

    bool newIsDummy = player_ctx->m_tvchain->GetInputType(newid) == "DUMMY";
    SetPlayingInfo(*pginfo);

    Pause();
    ChangeSpeed();
    ResetCaptions();

    // Release all frames to ensure the current decoder resources are released
    DiscardVideoFrames(true, true);

    player_ctx->m_tvchain->SetProgram(*pginfo);
    player_ctx->m_buffer->Reset(true);

    if (newIsDummy)
    {
        OpenDummy();
        ResetPlaying();
        SetEof(kEofStateNone);
        delete pginfo;
        inJumpToProgramPause = false;
        return;
    }

    SendMythSystemPlayEvent("PLAY_CHANGED", pginfo);

    if (player_ctx->m_buffer->GetType() == ICRingBuffer::kRingBufferType)
    {
        // Restore original ringbuffer
        auto *ic = dynamic_cast< ICRingBuffer* >(player_ctx->m_buffer);
        if (ic) // should always be true
            player_ctx->m_buffer = ic->Take();
        delete ic;
    }

    player_ctx->m_buffer->OpenFile(
        pginfo->GetPlaybackURL(), RingBuffer::kLiveTVOpenTimeout);
    QString subfn = player_ctx->m_buffer->GetSubtitleFilename();
    TVState desiredState = player_ctx->GetState();
    bool isInProgress = (desiredState == kState_WatchingRecording ||
                         desiredState == kState_WatchingLiveTV);
    if (GetSubReader())
        GetSubReader()->LoadExternalSubtitles(subfn, isInProgress &&
                                              !subfn.isEmpty());

    if (!player_ctx->m_buffer->IsOpen())
    {
        LOG(VB_GENERAL, LOG_ERR, LOC + "JumpToProgram's OpenFile failed " +
            QString("(input type: %1).")
                .arg(player_ctx->m_tvchain->GetInputType(newid)));
        LOG(VB_GENERAL, LOG_ERR, player_ctx->m_tvchain->toString());
        SetEof(kEofStateImmediate);
        SetErrored(tr("Error opening jump program file buffer"));
        delete pginfo;
        inJumpToProgramPause = false;
        return;
    }

    bool wasDummy = isDummy;
    if (newtype || wasDummy)
    {
        if (OpenFile() < 0)
            SetErrored(tr("Error opening jump program file"));
    }
    else
        ResetPlaying();

    if (IsErrored() || !decoder)
    {
        LOG(VB_GENERAL, LOG_ERR, LOC + "JumpToProgram failed.");
        if (!IsErrored())
            SetErrored(tr("Error reopening video decoder"));
        delete pginfo;
        inJumpToProgramPause = false;
        return;
    }

    SetEof(kEofStateNone);

    // the bitrate is reset by player_ctx->m_buffer->OpenFile()...
    player_ctx->m_buffer->UpdateRawBitrate(decoder->GetRawBitrate());
    player_ctx->m_buffer->IgnoreLiveEOF(false);

    decoder->SetProgramInfo(*pginfo);
    delete pginfo;

    CheckTVChain();
    forcePositionMapSync = true;
    inJumpToProgramPause = false;
    Play();
    ChangeSpeed();

    // check that we aren't too close to the end of program.
    // and if so set it to 10s from the end if completed recordings
    // or 3s if live
    long long duration = player_ctx->m_tvchain->GetLengthAtCurPos();
    int maxpos = player_ctx->m_tvchain->HasNext() ? 10 : 3;

    if (nextpos > (duration - maxpos))
    {
        nextpos = duration - maxpos;
        if (nextpos < 0)
        {
            nextpos = 0;
        }
    }
    else if (nextpos < 0)
    {
        // it's a relative position to the end
        nextpos += duration;
    }

    // nextpos is the new position to use in seconds
    nextpos = TranslatePositionMsToFrame(nextpos * 1000, true);

    if (nextpos > 10)
        DoJumpToFrame(nextpos, kInaccuracyNone);

    player_ctx->SetPlayerChangingBuffers(false);
    LOG(VB_PLAYBACK, LOG_INFO, LOC + "JumpToProgram - end");
}

bool MythPlayer::StartPlaying(void)
{
    if (OpenFile() < 0)
    {
        LOG(VB_GENERAL, LOG_ERR, LOC + "Unable to open video file.");
        return false;
    }

    framesPlayed = 0;
    framesPlayedExtra = 0;
    rewindtime = fftime = 0;
    next_play_speed = audio.GetStretchFactor();
    jumpchapter = 0;
    commBreakMap.SkipCommercials(0);
    bufferingCounter=0;

    if (!InitVideo())
    {
        LOG(VB_GENERAL, LOG_ERR, LOC + "Unable to initialize video.");
        audio.DeleteOutput();
        return false;
    }

    bool seek = bookmarkseek > 30;
    EventStart();
    DecoderStart(true);
    if (seek)
        InitialSeek();
    VideoStart();

    playerThread->setPriority(QThread::TimeCriticalPriority);
#ifdef Q_OS_ANDROID
    setpriority(PRIO_PROCESS, playerThreadId, -20);
#endif
    UnpauseDecoder();
    return !IsErrored();
}

void MythPlayer::InitialSeek(void)
{
    // TODO handle initial commskip and/or cutlist skip as well
    if (bookmarkseek > 30)
    {
        DoJumpToFrame(bookmarkseek, kInaccuracyNone);
        if (clearSavedPosition && !player_ctx->IsPIP())
            SetBookmark(true);
    }
}


void MythPlayer::StopPlaying()
{
    LOG(VB_PLAYBACK, LOG_INFO, LOC + QString("StopPlaying - begin"));
    playerThread->setPriority(QThread::NormalPriority);
#ifdef Q_OS_ANDROID
    setpriority(PRIO_PROCESS, playerThreadId, 0);
#endif

    DecoderEnd();
    VideoEnd();
    AudioEnd();

    LOG(VB_PLAYBACK, LOG_INFO, LOC + QString("StopPlaying - end"));
}

void MythPlayer::EventStart(void)
{
    player_ctx->LockPlayingInfo(__FILE__, __LINE__);
    {
        if (player_ctx->m_playingInfo)
        {
            // When initial playback gets underway, we override the ProgramInfo
            // flags such that future calls to GetBookmark() will consider only
            // an actual bookmark and not progstart or lastplaypos information.
            player_ctx->m_playingInfo->SetIgnoreBookmark(false);
            player_ctx->m_playingInfo->SetIgnoreProgStart(true);
            player_ctx->m_playingInfo->SetAllowLastPlayPos(false);
        }
    }
    player_ctx->UnlockPlayingInfo(__FILE__, __LINE__);
    commBreakMap.LoadMap(player_ctx, framesPlayed);
}

void MythPlayer::EventLoop(void)
{
    // Live TV program change
    if (fileChanged)
        FileChanged();

    // recreate the osd if a reinit was triggered by another thread
    if (reinit_osd)
        ReinitOSD();

    // reselect subtitle tracks if triggered by the decoder
    if (enableCaptions)
        SetCaptionsEnabled(true, false);
    if (disableCaptions)
        SetCaptionsEnabled(false, false);

    // enable/disable forced subtitles if signalled by the decoder
    if (enableForcedSubtitles)
        DoEnableForcedSubtitles();
    if (disableForcedSubtitles)
        DoDisableForcedSubtitles();

    // reset the scan (and hence deinterlacers) if triggered by the decoder
    if (resetScan != kScan_Ignore)
        SetScanType(resetScan);

    // refresh the position map for an in-progress recording while editing
    if (hasFullPositionMap && IsWatchingInprogress() && deleteMap.IsEditing())
    {
        if (editUpdateTimer.elapsed() > 2000)
        {
            // N.B. the positionmap update and osd refresh are asynchronous
            forcePositionMapSync = true;
            osdLock.lock();
            deleteMap.UpdateOSD(framesPlayed, video_frame_rate, osd);
            osdLock.unlock();
            editUpdateTimer.start();
        }
    }

    // Refresh the programinfo in use status
    player_ctx->LockPlayingInfo(__FILE__, __LINE__);
    if (player_ctx->m_playingInfo)
        player_ctx->m_playingInfo->UpdateInUseMark();
    player_ctx->UnlockPlayingInfo(__FILE__, __LINE__);

    // Disable timestretch if we are too close to the end of the buffer
    if (ffrew_skip == 1 && (play_speed > 1.0F) && IsNearEnd())
    {
        LOG(VB_PLAYBACK, LOG_INFO, LOC + "Near end, Slowing down playback.");
        Play(1.0F, true, true);
    }

    if (isDummy && player_ctx->m_tvchain && player_ctx->m_tvchain->HasNext())
    {
        // Switch from the dummy recorder to the tuned program in livetv
        player_ctx->m_tvchain->JumpToNext(true, 0);
        JumpToProgram();
    }
    else if ((!allpaused || GetEof() != kEofStateNone) &&
             player_ctx->m_tvchain &&
             (decoder && !decoder->GetWaitForChange()))
    {
        // Switch to the next program in livetv
        if (player_ctx->m_tvchain->NeedsToSwitch())
            SwitchToProgram();
    }

    // Jump to the next program in livetv
    if (player_ctx->m_tvchain && player_ctx->m_tvchain->NeedsToJump())
    {
        JumpToProgram();
    }

    // Change interactive stream if requested
    { QMutexLocker locker(&streamLock);
    if (!m_newStream.isEmpty())
    {
        QString stream = m_newStream;
        m_newStream.clear();
        locker.unlock();
        JumpToStream(stream);
    }}

    // Disable fastforward if we are too close to the end of the buffer
    if (ffrew_skip > 1 && (CalcMaxFFTime(100, false) < 100))
    {
        LOG(VB_PLAYBACK, LOG_INFO, LOC + "Near end, stopping fastforward.");
        Play(1.0F, true, true);
    }

    // Disable rewind if we are too close to the beginning of the buffer
    if (ffrew_skip < 0 && CalcRWTime(-ffrew_skip) >= 0 &&
        (framesPlayed <= keyframedist))
    {
        LOG(VB_PLAYBACK, LOG_INFO, LOC + "Near start, stopping rewind.");
        float stretch = (ffrew_skip > 0) ? 1.0F : audio.GetStretchFactor();
        Play(stretch, true, true);
    }

    // Check for error
    if (IsErrored() || player_ctx->IsRecorderErrored())
    {
        LOG(VB_GENERAL, LOG_ERR, LOC +
            "Unknown recorder error, exiting decoder");
        if (!IsErrored())
            SetErrored(tr("Irrecoverable recorder error"));
        killdecoder = true;
        return;
    }

    // Handle speed change
    if (play_speed != next_play_speed &&
        (!player_ctx->m_tvchain ||
         (player_ctx->m_tvchain && !player_ctx->m_tvchain->NeedsToJump())))
    {
        ChangeSpeed();
        return;
    }

    // Check if we got a communication error, and if so pause playback
    if (player_ctx->m_buffer->GetCommsError())
    {
        Pause();
        player_ctx->m_buffer->ResetCommsError();
    }

    // Handle end of file
    EofState eof = GetEof();
    if (HasReachedEof())
    {
#ifdef USING_MHEG
        if (interactiveTV && interactiveTV->StreamStarted(false))
        {
            Pause();
            return;
        }
#endif
        if (player_ctx->m_tvchain && player_ctx->m_tvchain->HasNext())
        {
            LOG(VB_GENERAL, LOG_NOTICE, LOC + "LiveTV forcing JumpTo 1");
            player_ctx->m_tvchain->JumpToNext(true, 0);
            return;
        }

        bool videoDrained =
            videoOutput && videoOutput->ValidVideoFrames() < 1;
        bool audioDrained =
            !audio.GetAudioOutput() ||
            audio.IsPaused() ||
            audio.GetAudioOutput()->GetAudioBufferedTime() < 100;
        if (eof != kEofStateDelayed || (videoDrained && audioDrained))
        {
            if (eof == kEofStateDelayed)
                LOG(VB_PLAYBACK, LOG_INFO,
                    QString("waiting for no video frames %1")
                    .arg(videoOutput->ValidVideoFrames()));
            LOG(VB_PLAYBACK, LOG_INFO,
                QString("HasReachedEof() at framesPlayed=%1 totalFrames=%2")
                .arg(framesPlayed).arg(GetCurrentFrameCount()));
            Pause();
            SetPlaying(false);
            return;
        }
    }

    // Handle rewind
    if (rewindtime > 0 && (ffrew_skip == 1 || ffrew_skip == 0))
    {
        rewindtime = CalcRWTime(rewindtime);
        if (rewindtime > 0)
            DoRewind(rewindtime, kInaccuracyDefault);
    }

    // Handle fast forward
    if (fftime > 0 && (ffrew_skip == 1 || ffrew_skip == 0))
    {
        fftime = CalcMaxFFTime(fftime);
        if (fftime > 0)
        {
            DoFastForward(fftime, kInaccuracyDefault);
            if (GetEof() != kEofStateNone)
               return;
        }
    }

    // Handle chapter jump
    if (jumpchapter != 0)
        DoJumpChapter(jumpchapter);

    // Handle commercial skipping
    if (commBreakMap.GetSkipCommercials() != 0 && (ffrew_skip == 1))
    {
        if (!commBreakMap.HasMap())
        {
            //: The commercials/adverts have not been flagged
            SetOSDStatus(tr("Not Flagged"), kOSDTimeout_Med);
            QString message = "COMMFLAG_REQUEST ";
            player_ctx->LockPlayingInfo(__FILE__, __LINE__);
            message += QString("%1").arg(player_ctx->m_playingInfo->GetChanID()) +
                " " + player_ctx->m_playingInfo->MakeUniqueKey();
            player_ctx->UnlockPlayingInfo(__FILE__, __LINE__);
            gCoreContext->SendMessage(message);
        }
        else
        {
            QString msg;
            uint64_t jumpto = 0;
            uint64_t frameCount = GetCurrentFrameCount();
            // XXX CommBreakMap should use duration map not video_frame_rate
            bool jump = commBreakMap.DoSkipCommercials(jumpto, framesPlayed,
                                                       video_frame_rate,
                                                       frameCount, msg);
            if (!msg.isEmpty())
                SetOSDStatus(msg, kOSDTimeout_Med);
            if (jump)
                DoJumpToFrame(jumpto, kInaccuracyNone);
        }
        commBreakMap.SkipCommercials(0);
        return;
    }

    // Handle automatic commercial skipping
    uint64_t jumpto = 0;
    if (deleteMap.IsEmpty() && (ffrew_skip == 1) &&
       (kCommSkipOff != commBreakMap.GetAutoCommercialSkip()) &&
        commBreakMap.HasMap())
    {
        QString msg;
        uint64_t frameCount = GetCurrentFrameCount();
        // XXX CommBreakMap should use duration map not video_frame_rate
        bool jump = commBreakMap.AutoCommercialSkip(jumpto, framesPlayed,
                                                    video_frame_rate,
                                                    frameCount, msg);
        if (!msg.isEmpty())
            SetOSDStatus(msg, kOSDTimeout_Med);
        if (jump)
            DoJumpToFrame(jumpto, kInaccuracyNone);
    }

    // Handle cutlist skipping
    if (!allpaused && (ffrew_skip == 1) &&
        deleteMap.TrackerWantsToJump(framesPlayed, jumpto))
    {
        if (jumpto == totalFrames)
        {
            if (!(endExitPrompt == 1 && !player_ctx->IsPIP() &&
                  player_ctx->GetState() == kState_WatchingPreRecorded))
            {
                SetEof(kEofStateDelayed);
            }
        }
        else
        {
            DoJumpToFrame(jumpto, kInaccuracyNone);
        }
    }
}

void MythPlayer::AudioEnd(void)
{
    audio.DeleteOutput();
}

bool MythPlayer::PauseDecoder(void)
{
    decoderPauseLock.lock();
    if (is_current_thread(decoderThread))
    {
        decoderPaused = true;
        decoderThreadPause.wakeAll();
        decoderPauseLock.unlock();
        return decoderPaused;
    }

    int tries = 0;
    pauseDecoder = true;
    while (decoderThread && !killdecoder && (tries++ < 100) &&
           !decoderThreadPause.wait(&decoderPauseLock, 100))
    {
        qApp->processEvents();
        LOG(VB_GENERAL, LOG_WARNING, LOC + "Waited 100ms for decoder to pause");
    }
    pauseDecoder = false;
    decoderPauseLock.unlock();
    return decoderPaused;
}

void MythPlayer::UnpauseDecoder(void)
{
    decoderPauseLock.lock();

    if (is_current_thread(decoderThread))
    {
        decoderPaused = false;
        decoderThreadUnpause.wakeAll();
        decoderPauseLock.unlock();
        return;
    }

    if (!IsInStillFrame())
    {
        int tries = 0;
        unpauseDecoder = true;
        while (decoderThread && !killdecoder && (tries++ < 100) &&
              !decoderThreadUnpause.wait(&decoderPauseLock, 100))
        {
            qApp->processEvents();
            LOG(VB_GENERAL, LOG_WARNING, LOC + "Waited 100ms for decoder to unpause");
        }
        unpauseDecoder = false;
    }
    decoderPauseLock.unlock();
}

void MythPlayer::DecoderStart(bool start_paused)
{
    if (decoderThread)
    {
        if (decoderThread->isRunning())
        {
            LOG(VB_GENERAL, LOG_ERR, LOC + "Decoder thread already running");
        }
        delete decoderThread;
    }

    killdecoder = false;
    decoderPaused = start_paused;
    decoderThread = new DecoderThread(this, start_paused);
    if (decoderThread)
        decoderThread->start();
}

void MythPlayer::DecoderEnd(void)
{
    PauseDecoder();
    SetPlaying(false);
    // Ensure any hardware frames are released (after pausing the decoder) to
    // allow the decoder to exit cleanly
    DiscardVideoFrames(true, true);

    killdecoder = true;
    int tries = 0;
    while (decoderThread && !decoderThread->wait(100) && (tries++ < 50))
        LOG(VB_PLAYBACK, LOG_INFO, LOC +
            "Waited 100ms for decoder loop to stop");

    if (decoderThread && decoderThread->isRunning())
        LOG(VB_GENERAL, LOG_ERR, LOC + "Failed to stop decoder loop.");
    else
        LOG(VB_PLAYBACK, LOG_INFO, LOC + "Exited decoder loop.");
    SetDecoder(nullptr);
}

void MythPlayer::DecoderPauseCheck(void)
{
    if (is_current_thread(decoderThread))
    {
        if (pauseDecoder)
            PauseDecoder();
        if (unpauseDecoder)
            UnpauseDecoder();
    }
}

EofState MythPlayer::GetEof(void) const
{
    if (is_current_thread(playerThread))
        return decoder ? decoder->GetEof() : kEofStateImmediate;

    if (!decoder_change_lock.tryLock(50))
        return kEofStateNone;

    EofState eof = decoder ? decoder->GetEof() : kEofStateImmediate;
    decoder_change_lock.unlock();
    return eof;
}

void MythPlayer::SetEof(EofState eof)
{
    if (is_current_thread(playerThread))
    {
        if (decoder)
            decoder->SetEofState(eof);
        return;
    }

    if (!decoder_change_lock.tryLock(50))
        return;

    if (decoder)
        decoder->SetEofState(eof);
    decoder_change_lock.unlock();
}

void MythPlayer::DecoderLoop(bool pause)
{
    if (pause)
        PauseDecoder();

    while (!killdecoder && !IsErrored())
    {
        DecoderPauseCheck();

        if (totalDecoderPause || inJumpToProgramPause)
        {
            usleep(1000);
            continue;
        }

        if (forcePositionMapSync)
        {
            if (!decoder_change_lock.tryLock(1))
                continue;
            if (decoder)
            {
                forcePositionMapSync = false;
                decoder->SyncPositionMap();
            }
            decoder_change_lock.unlock();
        }

        if (decoderSeek >= 0)
        {
            if (!decoder_change_lock.tryLock(1))
                continue;
            if (decoder)
            {
                decoderSeekLock.lock();
                if (((uint64_t)decoderSeek < framesPlayed) && decoder)
                    decoder->DoRewind(decoderSeek);
                else if (decoder)
                    decoder->DoFastForward(decoderSeek, !transcoding);
                decoderSeek = -1;
                decoderSeekLock.unlock();
            }
            decoder_change_lock.unlock();
        }

        bool obey_eof = (GetEof() != kEofStateNone) &&
                        !(player_ctx->m_tvchain && !allpaused);
        if (isDummy || ((decoderPaused || ffrew_skip == 0 || obey_eof) &&
            !decodeOneFrame))
        {
            usleep(1000);
            continue;
        }

        DecodeType dt = deleteMap.IsEditing() || (audio.HasAudioOut() && normal_speed) ?
            kDecodeAV : kDecodeVideo;

        DecoderGetFrame(dt);
        decodeOneFrame = false;
    }

    // Clear any wait conditions
    DecoderPauseCheck();
    decoderSeek = -1;
}

bool MythPlayer::DecoderGetFrameFFREW(void)
{
    if (!decoder)
        return false;

    if (ffrew_skip > 0)
    {
        long long delta = decoder->GetFramesRead() - framesPlayed;
        long long real_skip = CalcMaxFFTime(ffrew_skip - ffrew_adjust + delta) - delta;
        long long target_frame = decoder->GetFramesRead() + real_skip;
        if (real_skip >= 0)
        {
            decoder->DoFastForward(target_frame, false);
        }
        long long seek_frame  = decoder->GetFramesRead();
        ffrew_adjust = seek_frame - target_frame;
    }
    else if (CalcRWTime(-ffrew_skip) >= 0)
    {
        DecoderGetFrameREW();
    }
    return DoGetFrame(deleteMap.IsEditing() ? kDecodeAV : kDecodeVideo);
}

bool MythPlayer::DecoderGetFrameREW(void)
{
    long long cur_frame    = decoder->GetFramesPlayed();
    bool      toBegin      = -cur_frame > ffrew_skip + ffrew_adjust;
    long long real_skip    = (toBegin) ? -cur_frame : ffrew_skip + ffrew_adjust;
    long long target_frame = cur_frame + real_skip;
    bool ret = decoder->DoRewind(target_frame, false);
    long long seek_frame  = decoder->GetFramesPlayed();
    ffrew_adjust = target_frame - seek_frame;
    return ret;
}

bool MythPlayer::DecoderGetFrame(DecodeType decodetype, bool unsafe)
{
    bool ret = false;
    if (!videoOutput)
        return false;

    // Wait for frames to be available for decoding onto
    int tries = 0;
    while (!unsafe &&
        (!videoOutput->EnoughFreeFrames() || GetAudio()->IsBufferAlmostFull()) )
    {
        if (killdecoder || pauseDecoder)
            return false;

        if (++tries > 10)
        {
            if (++videobuf_retries >= 2000)
            {
                LOG(VB_GENERAL, LOG_ERR, LOC +
                    "Decoder timed out waiting for free video buffers.");
                // We've tried for 20 seconds now, give up so that we don't
                // get stuck permanently in this state
                SetErrored("Decoder timed out waiting for free video buffers.");
            }
            return false;
        }

        usleep(1000);
    }
    videobuf_retries = 0;

    if (!decoder_change_lock.tryLock(5))
        return false;
    if (killdecoder || !decoder || pauseDecoder || IsErrored())
    {
        decoder_change_lock.unlock();
        return false;
    }

    if (ffrew_skip == 1 || decodeOneFrame)
        ret = DoGetFrame(decodetype);
    else if (ffrew_skip != 0)
        ret = DecoderGetFrameFFREW();
    decoder_change_lock.unlock();
    return ret;
}

bool MythPlayer::DoGetFrame(DecodeType Type)
{
    bool ret = false;
    QElapsedTimer timeout;
    timeout.start();
    bool retry = true;
    // retry for a maximum of 5 seconds
    while (retry && !pauseDecoder && !killdecoder && !timeout.hasExpired(5000))
    {
        retry = false;
        ret = decoder->GetFrame(Type, retry);
        if (retry)
        {
            decoder_change_lock.unlock();
            QThread::usleep(10000);
            decoder_change_lock.lock();
        }
    }

    if (timeout.hasExpired(5000))
        return false;
    return ret;
}

void MythPlayer::SetTranscoding(bool value)
{
    transcoding = value;

    if (decoder)
        decoder->SetTranscoding(value);
}

bool MythPlayer::AddPIPPlayer(MythPlayer *pip, PIPLocation loc)
{
    if (!is_current_thread(playerThread))
    {
        LOG(VB_GENERAL, LOG_ERR, LOC + "Cannot add PiP from another thread");
        return false;
    }

    if (pip_players.contains(pip))
    {
        LOG(VB_GENERAL, LOG_ERR, LOC + "PiPMap already contains PiP.");
        return false;
    }

    QList<PIPLocation> locs = pip_players.values();
    if (locs.contains(loc))
    {
        LOG(VB_GENERAL, LOG_ERR, LOC +"Already have a PiP at that location.");
        return false;
    }

    pip_players.insert(pip, loc);
    return true;
}

bool MythPlayer::RemovePIPPlayer(MythPlayer *pip)
{
    if (!is_current_thread(playerThread))
        return false;

    if (!pip_players.contains(pip))
        return false;

    pip_players.remove(pip);
    if (videoOutput)
        videoOutput->RemovePIP(pip);
    return true;
}

PIPLocation MythPlayer::GetNextPIPLocation(void) const
{
    if (!is_current_thread(playerThread))
        return kPIP_END;

    if (pip_players.isEmpty())
        return pip_default_loc;

    // order of preference, could be stored in db if we want it configurable
    PIPLocation ols[] =
        { kPIPTopLeft, kPIPTopRight, kPIPBottomLeft, kPIPBottomRight };

    for (size_t i = 0; i < sizeof(ols)/sizeof(PIPLocation); i++)
    {
        PIPMap::const_iterator it = pip_players.begin();
        for (; it != pip_players.end() && (*it != ols[i]); ++it);

        if (it == pip_players.end())
            return ols[i];
    }

    return kPIP_END;
}

int64_t MythPlayer::AdjustAudioTimecodeOffset(int64_t v, int newsync)
{
    if ((newsync >= -1000) && (newsync <= 1000))
        tc_wrap[TC_AUDIO] = newsync;
    else
        tc_wrap[TC_AUDIO] += v;
    return tc_wrap[TC_AUDIO];
}

void MythPlayer::WrapTimecode(int64_t &timecode, TCTypes tc_type)
{
    timecode += tc_wrap[tc_type];
}

bool MythPlayer::PrepareAudioSample(int64_t &timecode)
{
    WrapTimecode(timecode, TC_AUDIO);
    return false;
}

void MythPlayer::SetWatched(bool forceWatched)
{
    player_ctx->LockPlayingInfo(__FILE__, __LINE__);
    if (!player_ctx->m_playingInfo)
    {
        player_ctx->UnlockPlayingInfo(__FILE__, __LINE__);
        return;
    }

    uint64_t numFrames = GetCurrentFrameCount();

    // For recordings we want to ignore the post-roll and account for
    // in-progress recordings where totalFrames doesn't represent
    // the full length of the recording. For videos we can only rely on
    // totalFrames as duration metadata can be wrong
    if (player_ctx->m_playingInfo->IsRecording() &&
        player_ctx->m_playingInfo->QueryTranscodeStatus() !=
        TRANSCODING_COMPLETE)
    {

        // If the recording is stopped early we need to use the recording end
        // time, not the programme end time
#if QT_VERSION < QT_VERSION_CHECK(5,8,0)
        uint endtime;
        if (player_ctx->m_playingInfo->GetRecordingEndTime().toTime_t() <
            player_ctx->m_playingInfo->GetScheduledEndTime().toTime_t())
        {
            endtime = player_ctx->m_playingInfo->GetRecordingEndTime().toTime_t();
        }
        else
        {
            endtime = player_ctx->m_playingInfo->GetScheduledEndTime().toTime_t();
        }

        numFrames = (long long)
            ((endtime -
              player_ctx->m_playingInfo->GetRecordingStartTime().toTime_t()) *
             video_frame_rate);
#else
        ProgramInfo *pi = player_ctx->m_playingInfo;
        qint64 starttime = pi->GetRecordingStartTime().toSecsSinceEpoch();
        qint64 endactual = pi->GetRecordingEndTime().toSecsSinceEpoch();
        qint64 endsched = pi->GetScheduledEndTime().toSecsSinceEpoch();
        qint64 endtime = min(endactual, endsched);
        numFrames = (long long) ((endtime - starttime) * video_frame_rate);
#endif
    }

    int offset = (int) round(0.14 * (numFrames / video_frame_rate));

    if (offset < 240)
        offset = 240; // 4 Minutes Min
    else if (offset > 720)
        offset = 720; // 12 Minutes Max

    if (forceWatched || framesPlayed > numFrames - (offset * video_frame_rate))
    {
        player_ctx->m_playingInfo->SaveWatched(true);
        LOG(VB_GENERAL, LOG_INFO, LOC +
            QString("Marking recording as watched using offset %1 minutes")
                .arg(offset/60));
    }

    player_ctx->UnlockPlayingInfo(__FILE__, __LINE__);
}

void MythPlayer::SetBookmark(bool clear)
{
    player_ctx->LockPlayingInfo(__FILE__, __LINE__);
    if (player_ctx->m_playingInfo)
        player_ctx->m_playingInfo->SaveBookmark(clear ? 0 : framesPlayed);
    player_ctx->UnlockPlayingInfo(__FILE__, __LINE__);
}

uint64_t MythPlayer::GetBookmark(void)
{
    uint64_t bookmark = 0;

    if (gCoreContext->IsDatabaseIgnored() ||
       (player_ctx->m_buffer && !player_ctx->m_buffer->IsBookmarkAllowed()))
        bookmark = 0;
    else
    {
        player_ctx->LockPlayingInfo(__FILE__, __LINE__);
        if (const ProgramInfo *pi = player_ctx->m_playingInfo)
        {
            bookmark = pi->QueryBookmark();
            // Disable progstart if the program has a cutlist.
            if (bookmark == 0 && !pi->HasCutlist())
                bookmark = pi->QueryProgStart();
            if (bookmark == 0)
                bookmark = pi->QueryLastPlayPos();
        }
        player_ctx->UnlockPlayingInfo(__FILE__, __LINE__);
    }

    return bookmark;
}

bool MythPlayer::UpdateFFRewSkip(void)
{
    bool skip_changed;

    float temp_speed = (play_speed == 0.0F) ?
        audio.GetStretchFactor() : play_speed;
    if (play_speed >= 0.0F && play_speed <= 3.0F)
    {
        skip_changed = (ffrew_skip != 1);
        if (decoder)
            m_fpsMultiplier = decoder->GetfpsMultiplier();
        frame_interval = (int) (1000000.0 / video_frame_rate / static_cast<double>(temp_speed))
          / m_fpsMultiplier;
        ffrew_skip = (play_speed != 0.0F);
    }
    else
    {
        skip_changed = true;
        frame_interval = 200000;
        frame_interval = (fabs(play_speed) >=   3.0F) ? 133466 : frame_interval;
        frame_interval = (fabs(play_speed) >=   5.0F) ? 133466 : frame_interval;
        frame_interval = (fabs(play_speed) >=   8.0F) ? 250250 : frame_interval;
        frame_interval = (fabs(play_speed) >=  10.0F) ? 133466 : frame_interval;
        frame_interval = (fabs(play_speed) >=  16.0F) ? 187687 : frame_interval;
        frame_interval = (fabs(play_speed) >=  20.0F) ? 150150 : frame_interval;
        frame_interval = (fabs(play_speed) >=  30.0F) ? 133466 : frame_interval;
        frame_interval = (fabs(play_speed) >=  60.0F) ? 133466 : frame_interval;
        frame_interval = (fabs(play_speed) >= 120.0F) ? 133466 : frame_interval;
        frame_interval = (fabs(play_speed) >= 180.0F) ? 133466 : frame_interval;
        float ffw_fps = fabs(static_cast<double>(play_speed)) * video_frame_rate;
        float dis_fps = 1000000.0F / frame_interval;
        ffrew_skip = (int)ceil(ffw_fps / dis_fps);
        ffrew_skip = play_speed < 0.0F ? -ffrew_skip : ffrew_skip;
        ffrew_adjust = 0;
    }

    return skip_changed;
}

void MythPlayer::ChangeSpeed(void)
{
    float last_speed = play_speed;
    play_speed   = next_play_speed;
    normal_speed = next_normal_speed;
    rtcbase = 0;

    bool skip_changed = UpdateFFRewSkip();

    if (skip_changed && videoOutput)
    {
        videoOutput->SetPrebuffering(ffrew_skip == 1);
        if (play_speed != 0.0F && !(last_speed == 0.0F && ffrew_skip == 1))
            DoJumpToFrame(framesPlayed + fftime - rewindtime, kInaccuracyFull);
    }

    LOG(VB_PLAYBACK, LOG_INFO, LOC + "Play speed: " +
        QString("rate: %1 speed: %2 skip: %3 => new interval %4")
            .arg(video_frame_rate).arg(static_cast<double>(play_speed))
            .arg(ffrew_skip).arg(frame_interval));

    if (videoOutput && videosync)
        videoOutput->SetVideoFrameRate(static_cast<float>(video_frame_rate));

    // ensure we re-check double rate support following a speed change
    m_scan_initialized = false;

    if (normal_speed && audio.HasAudioOut())
    {
        audio.SetStretchFactor(play_speed);
        syncWithAudioStretch();
    }
}

bool MythPlayer::DoRewind(uint64_t frames, double inaccuracy)
{
    if (player_ctx->m_buffer && !player_ctx->m_buffer->IsSeekingAllowed())
        return false;

    uint64_t number = frames + 1;
    uint64_t desiredFrame = (framesPlayed > number) ? framesPlayed - number : 0;

    limitKeyRepeat = false;
    if (desiredFrame < video_frame_rate)
        limitKeyRepeat = true;

    uint64_t seeksnap_wanted = UINT64_MAX;
    if (inaccuracy != kInaccuracyFull)
        seeksnap_wanted = frames * inaccuracy;
    ClearBeforeSeek(frames);
    WaitForSeek(desiredFrame, seeksnap_wanted);
    rewindtime = 0;
    ClearAfterSeek();
    return true;
}

bool MythPlayer::DoRewindSecs(float secs, double inaccuracy, bool use_cutlist)
{
    float current = ComputeSecs(framesPlayed, use_cutlist);
    float target = current - secs;
    if (target < 0)
        target = 0;
    uint64_t targetFrame = FindFrame(target, use_cutlist);
    return DoRewind(framesPlayed - targetFrame, inaccuracy);
}

long long MythPlayer::CalcRWTime(long long rw) const
{
    bool hasliveprev = (livetv && player_ctx->m_tvchain &&
                        player_ctx->m_tvchain->HasPrev());

    if (!hasliveprev || ((int64_t)framesPlayed >= rw))
    {
        return rw;
    }

    player_ctx->m_tvchain->JumpToNext(false, ((int64_t)framesPlayed - rw) / video_frame_rate);

    return -1;
}

long long MythPlayer::CalcMaxFFTime(long long ffframes, bool setjump) const
{
    float maxtime = 1.0;
    bool islivetvcur = (livetv && player_ctx->m_tvchain &&
                        !player_ctx->m_tvchain->HasNext());

    if (livetv || IsWatchingInprogress())
        maxtime = 3.0;

    long long ret       = ffframes;
    float ff            = ComputeSecs(ffframes, true);
    float secsPlayed    = ComputeSecs(framesPlayed, true);
    float secsWritten   = ComputeSecs(totalFrames, true);

    limitKeyRepeat = false;

    if (livetv && !islivetvcur && player_ctx->m_tvchain)
    {
        // recording has completed, totalFrames will always be up to date
        if ((ffframes + framesPlayed > totalFrames) && setjump)
        {
            ret = -1;
            // Number of frames to be skipped is from the end of the current segment
            player_ctx->m_tvchain->JumpToNext(true, ((int64_t)totalFrames - (int64_t)framesPlayed - ffframes) / video_frame_rate);
        }
    }
    else if (islivetvcur || IsWatchingInprogress())
    {
        if ((ff + secsPlayed) > secsWritten)
        {
            // If we attempt to seek past the last known duration,
            // check for up to date data
            long long framesWritten = player_ctx->m_recorder->GetFramesWritten();

            secsWritten = ComputeSecs(framesWritten, true);
        }

        float behind = secsWritten - secsPlayed;

        if (behind < maxtime) // if we're close, do nothing
            ret = 0;
        else if (behind - ff <= maxtime)
            ret = TranslatePositionMsToFrame(1000 * (secsWritten - maxtime),
                                             true) - framesPlayed;

        if (behind < maxtime * 3)
            limitKeyRepeat = true;
    }
    else if (IsPaused())
    {
        uint64_t lastFrame  = deleteMap.IsEmpty() ? totalFrames
                                                 : deleteMap.GetLastFrame();
        if (framesPlayed + ffframes >= lastFrame)
            ret = lastFrame - 1 - framesPlayed;
    }
    else
    {
        float secsMax = secsWritten - 2.F * maxtime;
        if (secsMax <= 0.F)
            ret = 0;
        else if (secsMax < secsPlayed + ff)
            ret = TranslatePositionMsToFrame(1000 * secsMax, true)
                    - framesPlayed;
    }

    return ret;
}

bool MythPlayer::IsReallyNearEnd(void) const
{
    if (!videoOutput || !decoder)
        return false;

    return player_ctx->m_buffer->IsNearEnd(
        decoder->GetFPS(), videoOutput->ValidVideoFrames());
}

bool MythPlayer::IsNearEnd(void)
{
    uint64_t framesRead, framesLeft = 0;

    if (!player_ctx)
        return false;

    player_ctx->LockPlayingInfo(__FILE__, __LINE__);
    if (!player_ctx->m_playingInfo || player_ctx->m_playingInfo->IsVideo() ||
        !decoder)
    {
        player_ctx->UnlockPlayingInfo(__FILE__, __LINE__);
        return false;
    }
    player_ctx->UnlockPlayingInfo(__FILE__, __LINE__);

    auto margin = (long long)(video_frame_rate * 2);
    margin = (long long) (margin * audio.GetStretchFactor());
    bool watchingTV = IsWatchingInprogress();

    framesRead = framesPlayed;

    if (!player_ctx->IsPIP() &&
        player_ctx->GetState() == kState_WatchingPreRecorded)
    {
        if (framesRead >= deleteMap.GetLastFrame())
            return true;
        uint64_t frameCount = GetCurrentFrameCount();
        framesLeft = (frameCount > framesRead) ? frameCount - framesRead : 0;
        return (framesLeft < (uint64_t)margin);
    }

    if (!livetv && !watchingTV)
        return false;

    if (livetv && player_ctx->m_tvchain && player_ctx->m_tvchain->HasNext())
        return false;

    if (player_ctx->m_recorder)
    {
        framesLeft =
            player_ctx->m_recorder->GetCachedFramesWritten() - framesRead;

        // if it looks like we are near end, get an updated GetFramesWritten()
        if (framesLeft < (uint64_t)margin)
            framesLeft = player_ctx->m_recorder->GetFramesWritten() - framesRead;
    }

    return (framesLeft < (uint64_t)margin);
}

bool MythPlayer::DoFastForward(uint64_t frames, double inaccuracy)
{
    if (player_ctx->m_buffer && !player_ctx->m_buffer->IsSeekingAllowed())
        return false;

    uint64_t number = (frames ? frames - 1 : 0);
    uint64_t desiredFrame = framesPlayed + number;

    if (!deleteMap.IsEditing() && IsInDelete(desiredFrame))
    {
        uint64_t endcheck = deleteMap.GetLastFrame();
        if (desiredFrame > endcheck)
            desiredFrame = endcheck;
    }

    uint64_t seeksnap_wanted = UINT64_MAX;
    if (inaccuracy != kInaccuracyFull)
        seeksnap_wanted = frames * inaccuracy;
    ClearBeforeSeek(frames);
    WaitForSeek(desiredFrame, seeksnap_wanted);
    fftime = 0;
    ClearAfterSeek(false);
    return true;
}

bool MythPlayer::DoFastForwardSecs(float secs, double inaccuracy,
                                   bool use_cutlist)
{
    float current = ComputeSecs(framesPlayed, use_cutlist);
    float target = current + secs;
    uint64_t targetFrame = FindFrame(target, use_cutlist);
    return DoFastForward(targetFrame - framesPlayed, inaccuracy);
}

void MythPlayer::DoJumpToFrame(uint64_t frame, double inaccuracy)
{
    if (frame > framesPlayed)
        DoFastForward(frame - framesPlayed, inaccuracy);
    else if (frame <= framesPlayed)
        DoRewind(framesPlayed - frame, inaccuracy);
}

void MythPlayer::WaitForSeek(uint64_t frame, uint64_t seeksnap_wanted)
{
    if (!decoder)
        return;

    SetEof(kEofStateNone);
    decoder->SetSeekSnap(seeksnap_wanted);

    bool islivetvcur = (livetv && player_ctx->m_tvchain &&
                        !player_ctx->m_tvchain->HasNext());

    uint64_t max = GetCurrentFrameCount();
    if (islivetvcur || IsWatchingInprogress())
    {
        max = (uint64_t)player_ctx->m_recorder->GetFramesWritten();
    }
    if (frame >= max)
        frame = max - 1;

    decoderSeekLock.lock();
    decoderSeek = frame;
    decoderSeekLock.unlock();

    int count = 0;
    bool need_clear = false;
    while (decoderSeek >= 0)
    {
        // Waiting blocks the main UI thread but the decoder may
        // have initiated a callback into the UI thread to create
        // certain resources. Ensure the callback is processed.
        // Ideally MythPlayer should be fully event driven and these
        // calls wouldn't be necessary.
        qApp->processEvents();

        usleep(50 * 1000);

        // provide some on screen feedback if seeking is slow
        count++;
        if (!(count % 3) && !hasFullPositionMap)
        {
            int num = count % 3;
            SetOSDMessage(tr("Searching") + QString().fill('.', num),
                          kOSDTimeout_Short);
            DisplayPauseFrame();
            need_clear = true;
        }
    }
    if (need_clear)
    {
        osdLock.lock();
        if (osd)
            osd->HideWindow("osd_message");
        osdLock.unlock();
    }
}

void MythPlayer::ClearAfterSeek(bool clearvideobuffers)
{
    LOG(VB_PLAYBACK, LOG_INFO, LOC + QString("ClearAfterSeek(%1)")
            .arg(clearvideobuffers));

    if (clearvideobuffers && videoOutput)
        videoOutput->ClearAfterSeek();

    int64_t savedTC = tc_wrap[TC_AUDIO];

    for (int j = 0; j < TCTYPESMAX; j++)
        tc_wrap[j] = tc_lastval[j] = 0;

    tc_wrap[TC_AUDIO] = savedTC;

    audio.Reset();
    // Reenable (or re-disable) subtitles, which ultimately does
    // nothing except to call ResetCaptions() to erase any captions
    // currently on-screen.  The key is that the erasing is done in
    // the UI thread, not the decoder thread.
    EnableSubtitles(textDesired);
    deleteMap.TrackerReset(framesPlayed);
    commBreakMap.SetTracker(framesPlayed);
    commBreakMap.ResetLastSkip();
    needNewPauseFrame = true;
    ResetAVSync();
}

void MythPlayer::ClearBeforeSeek(uint64_t Frames)
{
#ifdef USING_MEDIACODEC
    LOG(VB_PLAYBACK, LOG_DEBUG, LOC + QString("ClearBeforeSeek: decoder %1 frames %2 recording %3 livetv %4")
       .arg(m_codecName).arg(Frames).arg(watchingrecording).arg(livetv));

    if ((Frames < 2) || !videoOutput /*|| !(livetv || watchingrecording)*/)
        return;

    decoder_change_lock.lock();
    MythCodecID codec = decoder ? decoder->GetVideoCodecID() : kCodec_NONE;
    decoder_change_lock.unlock();
    if (codec_is_mediacodec(codec))
        videoOutput->DiscardFrames(true, true);
#else
    Q_UNUSED(Frames);
#endif
}

void MythPlayer::SetPlayerInfo(TV *tv, QWidget *widget, PlayerContext *ctx)
{
    deleteMap.SetPlayerContext(ctx);
    m_tv = tv;
    parentWidget = widget;
    player_ctx   = ctx;
    livetv       = ctx->m_tvchain;
}

bool MythPlayer::EnableEdit(void)
{
    deleteMap.SetEditing(false);

    if (!hasFullPositionMap)
    {
        LOG(VB_GENERAL, LOG_ERR, LOC + "Cannot edit - no full position map");
        SetOSDStatus(tr("No Seektable"), kOSDTimeout_Med);
        return false;
    }

    if (deleteMap.IsFileEditing())
        return false;

    QMutexLocker locker(&osdLock);
    if (!osd)
        return false;

    m_audiograph.SetPainter(videoOutput->GetOSDPainter());
    int sample_rate = GetAudio()->GetSampleRate();
    m_audiograph.SetSampleRate(sample_rate);
    m_audiograph.SetSampleCount((unsigned)(sample_rate / video_frame_rate));
    GetAudio()->addVisual(&m_audiograph);

    savedAudioTimecodeOffset = tc_wrap[TC_AUDIO];
    tc_wrap[TC_AUDIO] = 0;

    speedBeforeEdit = play_speed;
    pausedBeforeEdit = Pause();
    deleteMap.SetEditing(true);
    osd->DialogQuit();
    ResetCaptions();
    osd->HideAll();

    bool loadedAutoSave = deleteMap.LoadAutoSaveMap();
    if (loadedAutoSave)
    {
        SetOSDMessage(tr("Using previously auto-saved cuts"),
                      kOSDTimeout_Short);
    }

    deleteMap.UpdateSeekAmount(0);
    deleteMap.UpdateOSD(framesPlayed, video_frame_rate, osd);
    deleteMap.SetFileEditing(true);
    player_ctx->LockPlayingInfo(__FILE__, __LINE__);
    if (player_ctx->m_playingInfo)
        player_ctx->m_playingInfo->SaveEditing(true);
    player_ctx->UnlockPlayingInfo(__FILE__, __LINE__);
    editUpdateTimer.start();

    return deleteMap.IsEditing();
}

void MythPlayer::DisableEdit(int howToSave)
{
    QMutexLocker locker(&osdLock);
    if (!osd)
        return;

    deleteMap.SetEditing(false, osd);
    if (howToSave == 0)
        deleteMap.LoadMap();
    // Unconditionally save to remove temporary marks from the DB.
    if (howToSave >= 0)
        deleteMap.SaveMap();
    deleteMap.TrackerReset(framesPlayed);
    deleteMap.SetFileEditing(false);
    player_ctx->LockPlayingInfo(__FILE__, __LINE__);
    if (player_ctx->m_playingInfo)
        player_ctx->m_playingInfo->SaveEditing(false);
    player_ctx->UnlockPlayingInfo(__FILE__, __LINE__);
    GetAudio()->removeVisual(&m_audiograph);
    m_audiograph.Reset();
    tc_wrap[TC_AUDIO] = savedAudioTimecodeOffset;
    savedAudioTimecodeOffset = 0;

    if (!pausedBeforeEdit)
        Play(speedBeforeEdit);
    else
        SetOSDStatus(tr("Paused"), kOSDTimeout_None);
}

bool MythPlayer::HandleProgramEditorActions(QStringList &actions)
{
    bool handled = false;
    bool refresh = true;
    long long frame = GetFramesPlayed();

    for (int i = 0; i < actions.size() && !handled; i++)
    {
        QString action = actions[i];
        handled = true;
        float seekamount = deleteMap.GetSeekAmount();
        if (action == ACTION_LEFT)
        {
            if (seekamount == 0) // 1 frame
                DoRewind(1, kInaccuracyNone);
            else if (seekamount > 0)
                // Use fully-accurate seeks for less than 1 second.
                DoRewindSecs(seekamount, seekamount < 1.0F ? kInaccuracyNone :
                             kInaccuracyEditor, false);
            else
                HandleArbSeek(false);
        }
        else if (action == ACTION_RIGHT)
        {
            if (seekamount == 0) // 1 frame
                DoFastForward(1, kInaccuracyNone);
            else if (seekamount > 0)
                // Use fully-accurate seeks for less than 1 second.
                DoFastForwardSecs(seekamount, seekamount < 1.0F ? kInaccuracyNone :
                             kInaccuracyEditor, false);
            else
                HandleArbSeek(true);
        }
        else if (action == ACTION_LOADCOMMSKIP)
        {
            if (commBreakMap.HasMap())
            {
                frm_dir_map_t map;
                commBreakMap.GetMap(map);
                deleteMap.LoadCommBreakMap(map);
            }
        }
        else if (action == ACTION_PREVCUT)
        {
            float old_seekamount = deleteMap.GetSeekAmount();
            deleteMap.SetSeekAmount(-2);
            HandleArbSeek(false);
            deleteMap.SetSeekAmount(old_seekamount);
        }
        else if (action == ACTION_NEXTCUT)
        {
            float old_seekamount = deleteMap.GetSeekAmount();
            deleteMap.SetSeekAmount(-2);
            HandleArbSeek(true);
            deleteMap.SetSeekAmount(old_seekamount);
        }
#define FFREW_MULTICOUNT 10.0F
        else if (action == ACTION_BIGJUMPREW)
        {
            if (seekamount == 0)
                DoRewind(FFREW_MULTICOUNT, kInaccuracyNone);
            else if (seekamount > 0)
                DoRewindSecs(seekamount * FFREW_MULTICOUNT,
                             kInaccuracyEditor, false);
            else
                DoRewindSecs(FFREW_MULTICOUNT / 2,
                             kInaccuracyNone, false);
        }
        else if (action == ACTION_BIGJUMPFWD)
        {
            if (seekamount == 0)
                DoFastForward(FFREW_MULTICOUNT, kInaccuracyNone);
            else if (seekamount > 0)
                DoFastForwardSecs(seekamount * FFREW_MULTICOUNT,
                                  kInaccuracyEditor, false);
            else
                DoFastForwardSecs(FFREW_MULTICOUNT / 2,
                                  kInaccuracyNone, false);
        }
        else if (action == ACTION_SELECT)
        {
            deleteMap.NewCut(frame);
            SetOSDMessage(tr("New cut added."), kOSDTimeout_Short);
            refresh = true;
        }
        else if (action == "DELETE")
        {
            deleteMap.Delete(frame, tr("Delete"));
            refresh = true;
        }
        else if (action == "REVERT")
        {
            deleteMap.LoadMap(tr("Undo Changes"));
            refresh = true;
        }
        else if (action == "REVERTEXIT")
        {
            DisableEdit(0);
            refresh = false;
        }
        else if (action == ACTION_SAVEMAP)
        {
            deleteMap.SaveMap();
            refresh = true;
        }
        else if (action == "EDIT" || action == "SAVEEXIT")
        {
            DisableEdit(1);
            refresh = false;
        }
        else
        {
            QString undoMessage = deleteMap.GetUndoMessage();
            QString redoMessage = deleteMap.GetRedoMessage();
            handled = deleteMap.HandleAction(action, frame);
            if (handled && (action == "CUTTOBEGINNING" ||
                action == "CUTTOEND" || action == "NEWCUT"))
            {
                SetOSDMessage(tr("New cut added."), kOSDTimeout_Short);
            }
            else if (handled && action == "UNDO")
            {
                //: %1 is the undo message
                SetOSDMessage(tr("Undo - %1").arg(undoMessage),
                              kOSDTimeout_Short);
            }
            else if (handled && action == "REDO")
            {
                //: %1 is the redo message
                SetOSDMessage(tr("Redo - %1").arg(redoMessage),
                              kOSDTimeout_Short);
            }
        }
    }

    if (handled && refresh)
    {
        osdLock.lock();
        if (osd)
        {
            deleteMap.UpdateOSD(framesPlayed, video_frame_rate, osd);
        }
        osdLock.unlock();
    }

    return handled;
}

bool MythPlayer::IsInDelete(uint64_t frame)
{
    return deleteMap.IsInDelete(frame);
}

uint64_t MythPlayer::GetNearestMark(uint64_t frame, bool right)
{
    return deleteMap.GetNearestMark(frame, right);
}

bool MythPlayer::IsTemporaryMark(uint64_t frame)
{
    return deleteMap.IsTemporaryMark(frame);
}

bool MythPlayer::HasTemporaryMark(void)
{
    return deleteMap.HasTemporaryMark();
}

void MythPlayer::HandleArbSeek(bool right)
{
    if (deleteMap.GetSeekAmount() == -2)
    {
        uint64_t framenum = deleteMap.GetNearestMark(framesPlayed, right);
        if (right && (framenum > framesPlayed))
            DoFastForward(framenum - framesPlayed, kInaccuracyNone);
        else if (!right && (framesPlayed > framenum))
            DoRewind(framesPlayed - framenum, kInaccuracyNone);
    }
    else
    {
        if (right)
            DoFastForward(2, kInaccuracyFull);
        else
            DoRewind(2, kInaccuracyFull);
    }
}

AspectOverrideMode MythPlayer::GetAspectOverride(void) const
{
    if (videoOutput)
        return videoOutput->GetAspectOverride();
    return kAspect_Off;
}

AdjustFillMode MythPlayer::GetAdjustFill(void) const
{
    if (videoOutput)
        return videoOutput->GetAdjustFill();
    return kAdjustFill_Off;
}

void MythPlayer::ToggleAspectOverride(AspectOverrideMode aspectMode)
{
    if (videoOutput)
    {
        videoOutput->ToggleAspectOverride(aspectMode);
        ReinitOSD();
    }
}

void MythPlayer::ToggleAdjustFill(AdjustFillMode adjustfillMode)
{
    if (videoOutput)
    {
        detect_letter_box->SetDetectLetterbox(false);
        videoOutput->ToggleAdjustFill(adjustfillMode);
        ReinitOSD();
    }
}

void MythPlayer::Zoom(ZoomDirection direction)
{
    if (videoOutput)
    {
        videoOutput->Zoom(direction);
        ReinitOSD();
    }
}

void MythPlayer::ToggleMoveBottomLine(void)
{
    if (videoOutput)
    {
        videoOutput->ToggleMoveBottomLine();
        ReinitOSD();
    }
}

void MythPlayer::SaveBottomLine(void)
{
    if (videoOutput)
        videoOutput->SaveBottomLine();
}

bool MythPlayer::IsEmbedding(void)
{
    if (videoOutput)
        return videoOutput->IsEmbedding();
    return false;
}

bool MythPlayer::HasTVChainNext(void) const
{
    return player_ctx->m_tvchain && player_ctx->m_tvchain->HasNext();
}

char *MythPlayer::GetScreenGrab(int secondsin, int &bufflen,
                                int &vw, int &vh, float &ar)
{
    auto frameNum = (long long)(secondsin * video_frame_rate);

    return GetScreenGrabAtFrame(frameNum, false, bufflen, vw, vh, ar);
}

char *MythPlayer::GetScreenGrabAtFrame(uint64_t frameNum, bool absolute,
                                       int &bufflen, int &vw, int &vh,
                                       float &ar)
{
    uint64_t       number    = 0;
    unsigned char *data      = nullptr;
    unsigned char *outputbuf = nullptr;
    VideoFrame    *frame     = nullptr;
    AVFrame      orig;
    AVFrame      retbuf;
    MythAVCopy     copyCtx;
    memset(&orig,   0, sizeof(AVFrame));
    memset(&retbuf, 0, sizeof(AVFrame));

    bufflen = 0;
    vw = vh = 0;
    ar = 0;

    if (OpenFile(0) < 0)
    {
        LOG(VB_GENERAL, LOG_ERR, LOC + "Could not open file for preview.");
        return nullptr;
    }

    if ((video_dim.width() <= 0) || (video_dim.height() <= 0))
    {
        LOG(VB_PLAYBACK, LOG_ERR, LOC +
            QString("Video Resolution invalid %1x%2")
                .arg(video_dim.width()).arg(video_dim.height()));

        // This is probably an audio file, just return a grey frame.
        vw = 640;
        vh = 480;
        ar = 4.0F / 3.0F;

        bufflen = vw * vh * 4;
        outputbuf = new unsigned char[bufflen];
        memset(outputbuf, 0x3f, bufflen * sizeof(unsigned char));
        return (char*) outputbuf;
    }

    if (!InitVideo())
    {
        LOG(VB_GENERAL, LOG_ERR, LOC +
            "Unable to initialize video for screen grab.");
        return nullptr;
    }

    ClearAfterSeek();
    if (!decoderThread)
        DecoderStart(true /*start paused*/);
    SeekForScreenGrab(number, frameNum, absolute);
    int tries = 0;
    while (!videoOutput->ValidVideoFrames() && ((tries++) < 500))
    {
        decodeOneFrame = true;
        usleep(10000);
        if ((tries & 10) == 10)
            LOG(VB_PLAYBACK, LOG_INFO, LOC +
                "ScreenGrab: Waited 100ms for video frame");
    }

    if (!(frame = videoOutput->GetLastDecodedFrame()))
    {
        return nullptr;
    }

    while (true)
    {
        if (!(data = frame->buf))
        {
            break;
        }

        AVPictureFill(&orig, frame);
        float par = frame->aspect * video_dim.height() / video_dim.width();
        MythPictureDeinterlacer deinterlacer(AV_PIX_FMT_YUV420P,
                                             video_dim.width(), video_dim.height(),
                                             par);
        if (deinterlacer.DeinterlaceSingle(&orig, &orig) < 0)
        {
            break;
        }

        outputbuf = CreateBuffer(FMT_RGB32, video_dim.width(), video_dim.height());
        copyCtx.Copy(&retbuf, frame, outputbuf, AV_PIX_FMT_RGB32);
        vw = video_disp_dim.width();
        vh = video_disp_dim.height();
        ar = frame->aspect;
        break;
    }
    if (frame)
    {
        DiscardVideoFrame(frame);
    }
    return reinterpret_cast<char*>(outputbuf);
}

void MythPlayer::SeekForScreenGrab(uint64_t &number, uint64_t frameNum,
                                   bool absolute)
{
    number = frameNum;
    if (number >= totalFrames)
    {
        LOG(VB_PLAYBACK, LOG_ERR, LOC +
            "Screen grab requested for frame number beyond end of file.");
        number = totalFrames / 2;
    }

    if (!absolute && hasFullPositionMap)
    {
        bookmarkseek = GetBookmark();
        // Use the bookmark if we should, otherwise make sure we aren't
        // in the cutlist or a commercial break
        if (bookmarkseek > 30)
        {
            number = bookmarkseek;
        }
        else
        {
            uint64_t oldnumber = number;
            deleteMap.LoadMap();
            commBreakMap.LoadMap(player_ctx, framesPlayed);

            bool started_in_break_map = false;
            while (commBreakMap.IsInCommBreak(number) ||
                   IsInDelete(number))
            {
                started_in_break_map = true;
                number += (uint64_t) (30 * video_frame_rate);
                if (number >= totalFrames)
                {
                    number = oldnumber;
                    break;
                }
            }

            // Advance a few seconds from the end of the break
            if (started_in_break_map)
            {
                oldnumber = number;
                number += (long long) (10 * video_frame_rate);
                if (number >= totalFrames)
                    number = oldnumber;
            }
        }
    }

    DiscardVideoFrame(videoOutput->GetLastDecodedFrame());
    DoJumpToFrame(number, kInaccuracyNone);
}

VideoFrame* MythPlayer::GetRawVideoFrame(long long frameNumber)
{
    player_ctx->LockPlayingInfo(__FILE__, __LINE__);
    if (player_ctx->m_playingInfo)
        player_ctx->m_playingInfo->UpdateInUseMark();
    player_ctx->UnlockPlayingInfo(__FILE__, __LINE__);

    if (!decoderThread)
        DecoderStart(false);

    if (frameNumber >= 0)
    {
        DoJumpToFrame(frameNumber, kInaccuracyNone);
        ClearAfterSeek();
    }

    int tries = 0;
    while (!videoOutput->ValidVideoFrames() && ((tries++) < 100))
    {
        decodeOneFrame = true;
        usleep(10000);
        if ((tries & 10) == 10)
            LOG(VB_PLAYBACK, LOG_INFO, LOC + "Waited 100ms for video frame");
    }

    videoOutput->StartDisplayingFrame();
    return videoOutput->GetLastShownFrame();
}

QString MythPlayer::GetEncodingType(void) const
{
    if (decoder)
        return get_encoding_type(decoder->GetVideoCodecID());
    return QString();
}

void MythPlayer::GetCodecDescription(InfoMap &infoMap)
{
    infoMap["audiocodec"]    = ff_codec_id_string(audio.GetCodec());
    infoMap["audiochannels"] = QString::number(audio.GetOrigChannels());

    int width  = video_disp_dim.width();
    int height = video_disp_dim.height();
    infoMap["videocodec"]     = GetEncodingType();
    if (decoder)
        infoMap["videocodecdesc"] = decoder->GetRawEncodingType();
    infoMap["videowidth"]     = QString::number(width);
    infoMap["videoheight"]    = QString::number(height);
    infoMap["videoframerate"] = QString::number(video_frame_rate, 'f', 2);
    infoMap["deinterlacer"]   = DeinterlacerName(m_lastDeinterlacer,
                                                 m_lastDeinterlacer2x, m_lastFrameCodec);

    if (width < 640)
        return;

    bool interlaced = is_interlaced(m_scan);
    if (width == 1920 || height == 1080 || height == 1088)
        infoMap["videodescrip"] = interlaced ? "HD_1080_I" : "HD_1080_P";
    else if ((width == 1280 || height == 720) && !interlaced)
        infoMap["videodescrip"] = "HD_720_P";
    else if (height >= 720)
        infoMap["videodescrip"] = "HD";
    else infoMap["videodescrip"] = "SD";
}

bool MythPlayer::GetRawAudioState(void) const
{
    if (decoder)
        return decoder->GetRawAudioState();
    return false;
}

QString MythPlayer::GetXDS(const QString &key) const
{
    if (!decoder)
        return QString();
    return decoder->GetXDS(key);
}

void MythPlayer::InitForTranscode(bool copyaudio, bool copyvideo)
{
    // Are these really needed?
    SetPlaying(true);
    keyframedist = 30;

    if (!InitVideo())
    {
        LOG(VB_GENERAL, LOG_ERR, LOC +
            "Unable to initialize video for transcode.");
        SetPlaying(false);
        return;
    }

    framesPlayed = 0;
    framesPlayedExtra = 0;
    ClearAfterSeek();

    if (copyvideo && decoder)
        decoder->SetRawVideoState(true);
    if (copyaudio && decoder)
        decoder->SetRawAudioState(true);

    if (decoder)
    {
        decoder->SetSeekSnap(0);
    }
}

bool MythPlayer::TranscodeGetNextFrame(
    int &did_ff, bool &is_key, bool honorCutList)
{
    player_ctx->LockPlayingInfo(__FILE__, __LINE__);
    if (player_ctx->m_playingInfo)
        player_ctx->m_playingInfo->UpdateInUseMark();
    player_ctx->UnlockPlayingInfo(__FILE__, __LINE__);

    int64_t lastDecodedFrameNumber =
        videoOutput->GetLastDecodedFrame()->frameNumber;

    if ((lastDecodedFrameNumber == 0) && honorCutList)
        deleteMap.TrackerReset(0);

    if (!decoderThread)
        DecoderStart(true/*start paused*/);

    if (!decoder)
        return false;

    {
        QMutexLocker decoderlocker(&decoder_change_lock);
        if (!DoGetFrame(kDecodeAV))
            return false;
    }

    if (GetEof() != kEofStateNone)
        return false;

    if (honorCutList && !deleteMap.IsEmpty())
    {
        if (totalFrames && lastDecodedFrameNumber >= (int64_t)totalFrames)
            return false;

        uint64_t jumpto = 0;
        if (deleteMap.TrackerWantsToJump(lastDecodedFrameNumber, jumpto))
        {
            LOG(VB_GENERAL, LOG_INFO, LOC +
                QString("Fast-Forwarding from %1 to %2")
                    .arg(lastDecodedFrameNumber).arg(jumpto));
            if (jumpto >= totalFrames)
            {
                SetEof(kEofStateDelayed);
                return false;
            }

            // For 0.25, move this to DoJumpToFrame(jumpto)
            WaitForSeek(jumpto, 0);
            decoder->ClearStoredData();
            ClearAfterSeek();
            decoder_change_lock.lock();
            DoGetFrame(kDecodeAV);
            decoder_change_lock.unlock();
            did_ff = 1;
        }
    }
    if (GetEof() != kEofStateNone)
      return false;
    is_key = decoder->IsLastFrameKey();
    return true;
}

long MythPlayer::UpdateStoredFrameNum(long curFrameNum)
{
    if (decoder)
        return decoder->UpdateStoredFrameNum(curFrameNum);
    return 0;
}

void MythPlayer::SetCutList(const frm_dir_map_t &newCutList)
{
    deleteMap.SetMap(newCutList);
}

bool MythPlayer::WriteStoredData(RingBuffer *outRingBuffer,
                                 bool writevideo, long timecodeOffset)
{
    if (!decoder)
        return false;
    if (writevideo && !decoder->GetRawVideoState())
        writevideo = false;
    decoder->WriteStoredData(outRingBuffer, writevideo, timecodeOffset);
    return writevideo;
}

void MythPlayer::SetCommBreakMap(frm_dir_map_t &newMap)
{
    commBreakMap.SetMap(newMap, framesPlayed);
    forcePositionMapSync = true;
}

int MythPlayer::GetStatusbarPos(void) const
{
    double spos = 0.0;

    if (livetv || IsWatchingInprogress())
    {
        spos = 1000.0 * framesPlayed / player_ctx->m_recorder->GetFramesWritten();
    }
    else if (totalFrames)
    {
        spos = 1000.0 * framesPlayed / totalFrames;
    }

    return((int)spos);
}

void MythPlayer::GetPlaybackData(InfoMap &infoMap)
{
    QString samplerate = RingBuffer::BitrateToString(audio.GetSampleRate(), true);
    infoMap.insert("samplerate",  samplerate);
    infoMap.insert("filename",    player_ctx->m_buffer->GetSafeFilename());
    infoMap.insert("decoderrate", player_ctx->m_buffer->GetDecoderRate());
    infoMap.insert("storagerate", player_ctx->m_buffer->GetStorageRate());
    infoMap.insert("bufferavail", player_ctx->m_buffer->GetAvailableBuffer());
    infoMap.insert("buffersize",  QString::number(player_ctx->m_buffer->GetBufferSize() >> 20));
    if (gCoreContext->GetBoolSetting("PlaybackAVSync2", false))
    {
        int avsync = avsync_avg / 1000;
        infoMap.insert("avsync", tr("%1 ms").arg(avsync));
    }
    else
        infoMap.insert("avsync", QString::number((float)avsync_avg / (float)frame_interval, 'f', 2));
    if (videoOutput)
    {
        QString frames = QString("%1/%2").arg(videoOutput->ValidVideoFrames())
                                         .arg(videoOutput->FreeVideoFrames());
        infoMap.insert("videoframes", frames);
    }
    if (decoder)
        infoMap["videodecoder"] = decoder->GetCodecDecoderName();
    if (output_jmeter)
    {
        infoMap["framerate"] = QString("%1%2%3")
            .arg(output_jmeter->GetLastFPS(), 0, 'f', 2)
            .arg(QChar(0xB1, 0))
            .arg(output_jmeter->GetLastSD(), 0, 'f', 2);
        infoMap["load"] = output_jmeter->GetLastCPUStats();
    }
    GetCodecDescription(infoMap);
}

int64_t MythPlayer::GetSecondsPlayed(bool honorCutList, int divisor)
{
    int64_t pos = TranslatePositionFrameToMs(framesPlayed, honorCutList);
    LOG(VB_PLAYBACK, LOG_DEBUG, LOC +
        QString("GetSecondsPlayed: framesPlayed %1, honorCutList %2, divisor %3, pos %4")
        .arg(framesPlayed).arg(honorCutList).arg(divisor).arg(pos));
    return TranslatePositionFrameToMs(framesPlayed, honorCutList) / divisor;
}

int64_t MythPlayer::GetTotalSeconds(bool honorCutList, int divisor) const
{
    uint64_t pos = totalFrames;

    if (IsWatchingInprogress())
        pos = (uint64_t)-1;

    return TranslatePositionFrameToMs(pos, honorCutList) / divisor;
}

// Returns the total frame count, as totalFrames for a completed
// recording, or the most recent frame count from the recorder for
// live TV or an in-progress recording.
uint64_t MythPlayer::GetCurrentFrameCount(void) const
{
    uint64_t result = totalFrames;
    if (IsWatchingInprogress())
        result = player_ctx->m_recorder->GetFramesWritten();
    return result;
}

// Finds the frame number associated with the given time offset.  A
// positive offset or +0.0F indicate offset from the beginning.  A
// negative offset or -0.0F indicate offset from the end.  Limit the
// result to within bounds of the video.
uint64_t MythPlayer::FindFrame(float offset, bool use_cutlist) const
{
    bool islivetvcur    = (livetv && player_ctx->m_tvchain &&
                        !player_ctx->m_tvchain->HasNext());
    uint64_t length_ms  = TranslatePositionFrameToMs(totalFrames, use_cutlist);
    uint64_t position_ms;

    if (signbit(offset))
    {
        // Always get an updated totalFrame value for in progress recordings
        if (islivetvcur || IsWatchingInprogress())
        {
            uint64_t framesWritten = player_ctx->m_recorder->GetFramesWritten();

            if (totalFrames < framesWritten)
            {
                // Known duration is less than what the backend reported, use new value
                length_ms =
                    TranslatePositionFrameToMs(framesWritten, use_cutlist);
            }
        }
        uint64_t offset_ms = llroundf(-offset * 1000);
        position_ms = (offset_ms > length_ms) ? 0 : length_ms - offset_ms;
    }
    else
    {
        position_ms = llroundf(offset * 1000);

        if (offset > length_ms)
        {
            // Make sure we have an updated totalFrames
            if ((islivetvcur || IsWatchingInprogress()) &&
                (length_ms < offset))
            {
                long long framesWritten =
                    player_ctx->m_recorder->GetFramesWritten();

                length_ms =
                    TranslatePositionFrameToMs(framesWritten, use_cutlist);
            }
            position_ms = min(position_ms, length_ms);
        }
    }
    return TranslatePositionMsToFrame(position_ms, use_cutlist);
}

void MythPlayer::calcSliderPos(osdInfo &info, bool paddedFields)
{
    if (!decoder)
        return;

    bool islive = false;
    info.text.insert("chapteridx",    QString());
    info.text.insert("totalchapters", QString());
    info.text.insert("titleidx",      QString());
    info.text.insert("totaltitles",   QString());
    info.text.insert("angleidx",      QString());
    info.text.insert("totalangles",   QString());
    info.values.insert("position",   0);
    info.values.insert("progbefore", 0);
    info.values.insert("progafter",  0);

    int playbackLen = 0;
    bool fixed_playbacklen = false;

    if (decoder->GetCodecDecoderName() == "nuppel")
    {
        playbackLen = totalLength;
        fixed_playbacklen = true;
    }

    if (livetv && player_ctx->m_tvchain)
    {
        info.values["progbefore"] = (int)player_ctx->m_tvchain->HasPrev();
        info.values["progafter"]  = (int)player_ctx->m_tvchain->HasNext();
        playbackLen = player_ctx->m_tvchain->GetLengthAtCurPos();
        islive = true;
        fixed_playbacklen = true;
    }
    else if (IsWatchingInprogress())
    {
        islive = true;
    }
    else
    {
        int chapter  = GetCurrentChapter();
        int chapters = GetNumChapters();
        if (chapter && chapters > 1)
        {
            info.text["chapteridx"] = QString::number(chapter + 1);
            info.text["totalchapters"] =  QString::number(chapters);
        }

        int title  = GetCurrentTitle();
        int titles = GetNumTitles();
        if (title && titles > 1)
        {
            info.text["titleidx"] = QString::number(title + 1);
            info.text["totaltitles"] = QString::number(titles);
        }

        int angle  = GetCurrentAngle();
        int angles = GetNumAngles();
        if (angle && angles > 1)
        {
            info.text["angleidx"] = QString::number(angle + 1);
            info.text["totalangles"] = QString::number(angles);
        }
    }

    // Set the raw values, followed by the translated values.
    for (int i = 0; i < 2 ; ++i)
    {
        bool honorCutList = (i > 0);
        bool stillFrame = false;
        int  pos = 0;

        QString relPrefix = (honorCutList ? "rel" : "");
        if (!fixed_playbacklen)
            playbackLen = GetTotalSeconds(honorCutList);
        int secsplayed = GetSecondsPlayed(honorCutList);

        stillFrame = (secsplayed < 0);
        playbackLen = max(playbackLen, 0);
        secsplayed = min(playbackLen, max(secsplayed, 0));

        if (playbackLen > 0)
            pos = (int)(1000.0F * (secsplayed / (float)playbackLen));

        info.values.insert(relPrefix + "secondsplayed", secsplayed);
        info.values.insert(relPrefix + "totalseconds", playbackLen);
        info.values[relPrefix + "position"] = pos;

        int phours = secsplayed / 3600;
        int pmins = (secsplayed - phours * 3600) / 60;
        int psecs = (secsplayed - phours * 3600 - pmins * 60);

        int shours = playbackLen / 3600;
        int smins = (playbackLen - shours * 3600) / 60;
        int ssecs = (playbackLen - shours * 3600 - smins * 60);

        int secsbehind = max((playbackLen - secsplayed), 0);
        int sbhours = secsbehind / 3600;
        int sbmins = (secsbehind - sbhours * 3600) / 60;
        int sbsecs = (secsbehind - sbhours * 3600 - sbmins * 60);

        QString text1, text2, text3;
        if (paddedFields)
        {
            text1.sprintf("%02d:%02d:%02d", phours, pmins, psecs);
            text2.sprintf("%02d:%02d:%02d", shours, smins, ssecs);
            text3.sprintf("%02d:%02d:%02d", sbhours, sbmins, sbsecs);
        }
        else
        {
            if (shours > 0)
            {
                text1.sprintf("%d:%02d:%02d", phours, pmins, psecs);
                text2.sprintf("%d:%02d:%02d", shours, smins, ssecs);
            }
            else
            {
                text1.sprintf("%d:%02d", pmins, psecs);
                text2.sprintf("%d:%02d", smins, ssecs);
            }

            if (sbhours > 0)
            {
                text3.sprintf("%d:%02d:%02d", sbhours, sbmins, sbsecs);
            }
            else if (sbmins > 0)
            {
                text3.sprintf("%d:%02d", sbmins, sbsecs);
            }
            else
            {
                text3 = tr("%n second(s)", "", sbsecs);
            }
        }

        QString desc = stillFrame ? tr("Still Frame") :
                                    tr("%1 of %2").arg(text1).arg(text2);

        info.text[relPrefix + "description"] = desc;
        info.text[relPrefix + "playedtime"] = text1;
        info.text[relPrefix + "totaltime"] = text2;
        info.text[relPrefix + "remainingtime"] = islive ? QString() : text3;
        info.text[relPrefix + "behindtime"] = islive ? text3 : QString();
    }
}

// If position == -1, it signifies that we are computing the current
// duration of an in-progress recording.  In this case, we fetch the
// current frame rate and frame count from the recorder.
uint64_t MythPlayer::TranslatePositionFrameToMs(uint64_t position,
                                                bool use_cutlist) const
{
    float frameRate = GetFrameRate();
    if (position == (uint64_t)-1 &&
        player_ctx->m_recorder && player_ctx->m_recorder->IsValidRecorder())
    {
        float recorderFrameRate = player_ctx->m_recorder->GetFrameRate();
        if (recorderFrameRate > 0)
            frameRate = recorderFrameRate;
        position = player_ctx->m_recorder->GetFramesWritten();
    }
    return deleteMap.TranslatePositionFrameToMs(position, frameRate,
                                                use_cutlist);
}

int MythPlayer::GetNumChapters()
{
    if (decoder)
        return decoder->GetNumChapters();
    return 0;
}

int MythPlayer::GetCurrentChapter()
{
    if (decoder)
        return decoder->GetCurrentChapter(framesPlayed);
    return 0;
}

void MythPlayer::GetChapterTimes(QList<long long> &times)
{
    if (decoder)
        return decoder->GetChapterTimes(times);