/mythtv/libs/libmythtv/mythplayer.cpp

// -*- 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 "io/mythinteractivebuffer.h"
#include "audiooutput.h"
#include "cardutil.h"
#include "mythavutil.h"
#include "jitterometer.h"
#include "mythtimer.h"
#include "mythuiactions.h"
#include "io/mythmediabuffer.h"
#include "tv_actions.h"
#include "mythcodeccontext.h"

// MythUI headers
#include <mythmainwindow.h>

extern "C" {
#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_startPaused);
    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)
{
    foreach (auto lock, m_locks)
        if (lock)
            lock->lock();
}

MythPlayer::MythPlayer(PlayerFlags flags)
    : m_playerFlags(flags),
      m_display((flags & kVideoIsNull) ? nullptr : MythDisplay::AcquireRelease()),
      // CC608/708
      m_cc608(this), m_cc708(this),
      // Audio
      m_audio(this, (flags & kAudioMuted) != 0),
      // Debugging variables
      m_outputJmeter(new Jitterometer(LOC))
{
    m_playerThread = QThread::currentThread();
#ifdef Q_OS_ANDROID
    m_playerThreadId = gettid();
#endif
    // Playback (output) zoom control
    m_detectLetterBox = new DetectLetterbox(this);

    m_vbiMode = VBIMode::Parse(gCoreContext->GetSetting("VbiFormat"));
    m_captionsEnabledbyDefault = gCoreContext->GetBoolSetting("DefaultCCMode");
    m_itvEnabled         = gCoreContext->GetBoolSetting("EnableMHEG", false);
    m_clearSavedPosition = gCoreContext->GetNumSetting("ClearSavedPosition", 1);
    m_endExitPrompt      = gCoreContext->GetNumSetting("EndOfRecordingExitPrompt");
    m_pipDefaultLoc      = (PIPLocation)gCoreContext->GetNumSetting("PIPLocation", kPIPTopLeft);

    // Get VBI page number
    QString mypage = gCoreContext->GetSetting("VBIpageNr", "888");
    bool valid = false;
    uint tmp = mypage.toInt(&valid, 16);
    m_ttPageNum = (valid) ? tmp : m_ttPageNum;
    m_cc608.SetTTPageNum(m_ttPageNum);
    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(&m_itvLock);
        delete m_interactiveTV;
        m_interactiveTV = nullptr;
    }

    MythMultiLocker locker({&m_osdLock, &m_vidExitLock});

    delete m_osd;
    m_osd = nullptr;

    SetDecoder(nullptr);

    delete m_decoderThread;
    m_decoderThread = nullptr;

    delete m_videoOutput;
    m_videoOutput = nullptr;

    delete m_outputJmeter;
    m_outputJmeter = nullptr;

    delete m_detectLetterBox;
    m_detectLetterBox = nullptr;

    if (m_display)
        MythDisplay::AcquireRelease(false);
}

void MythPlayer::SetWatchingRecording(bool mode)
{
    m_watchingRecording = mode;
    if (m_decoder)
        m_decoder->SetWatchingRecording(mode);
}

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

void MythPlayer::PauseBuffer(void)
{
    m_bufferPauseLock.lock();
    if (m_playerCtx->m_buffer)
    {
        m_playerCtx->m_buffer->Pause();
        m_playerCtx->m_buffer->WaitForPause();
    }
    m_bufferPaused = true;
    m_bufferPauseLock.unlock();
}

void MythPlayer::UnpauseBuffer(void)
{
    m_bufferPauseLock.lock();
    if (m_playerCtx->m_buffer)
        m_playerCtx->m_buffer->Unpause();
    m_bufferPaused = false;
    m_bufferPauseLock.unlock();
}

bool MythPlayer::Pause(void)
{
    while (!m_pauseLock.tryLock(100))
    {
        LOG(VB_PLAYBACK, LOG_INFO, LOC + "Waited 100ms to get pause lock.");
        DecoderPauseCheck();
    }
    bool already_paused = m_allPaused;
    if (already_paused)
    {
        m_pauseLock.unlock();
        return already_paused;
    }
    m_nextPlaySpeed   = 0.0;
    m_nextNormalSpeed = false;
    PauseVideo();
    m_audio.Pause(true);
    PauseDecoder();
    PauseBuffer();
    if (!m_decoderPaused)
        PauseDecoder(); // Retry in case audio only stream
    m_allPaused = m_decoderPaused && m_videoPaused && m_bufferPaused;
    {
        if (FlagIsSet(kVideoIsNull) && m_decoder)
            m_decoder->UpdateFramesPlayed();
        else if (m_videoOutput && !FlagIsSet(kVideoIsNull))
            m_framesPlayed = m_videoOutput->GetFramesPlayed();
    }
    m_pauseLock.unlock();
    return already_paused;
}

bool MythPlayer::Play(float speed, bool normal, bool unpauseaudio)
{
    m_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 (m_deleteMap.IsEditing())
    {
        LOG(VB_GENERAL, LOG_ERR, LOC + "Ignoring Play(), in edit mode.");
        m_pauseLock.unlock();
        return false;
    }
    m_rtcBase = 0;
    m_priorAudioTimecode = 0;
    m_priorVideoTimecode = 0;
    m_lastFix  = 0.0;
    SetEof(kEofStateNone);
    UnpauseBuffer();
    UnpauseDecoder();
    if (unpauseaudio)
        m_audio.Pause(false);
    UnpauseVideo();
    m_allPaused = false;
    m_nextPlaySpeed   = speed;
    m_nextNormalSpeed = normal;
    m_pauseLock.unlock();
    return true;
}

void MythPlayer::PauseVideo(void)
{
    m_videoPauseLock.lock();
    m_needNewPauseFrame = true;
    m_videoPaused = true;
    m_videoPauseLock.unlock();
}

void MythPlayer::UnpauseVideo(void)
{
    m_videoPauseLock.lock();
    m_videoPaused = false;
    m_videoPauseLock.unlock();
}

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

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

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

    m_playing = is_playing;

    m_playingWaitCond.wakeAll();
}

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

    if (!wait_in_msec)
        return m_playing;

    MythTimer t;
    t.start();

    while ((wait_for != m_playing) && ((uint)t.elapsed() < wait_in_msec))
    {
        m_playingWaitCond.wait(
            &m_playingLock, max(0,(int)wait_in_msec - t.elapsed()));
    }

    return m_playing;
}

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

    PIPState pipState = m_playerCtx->GetPIPState();

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

    m_videoOutput = MythVideoOutput::Create(
                    m_decoder->GetCodecDecoderName(),
                    m_decoder->GetVideoCodecID(),
                    pipState, m_videoDim, m_videoDispDim, m_videoAspect,
                    m_parentWidget, m_embedRect,
                    m_videoFrameRate, (uint)m_playerFlags, m_codecName, m_maxReferenceFrames);

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

    if (m_embedding && pipState == kPIPOff)
        m_videoOutput->EmbedInWidget(m_embedRect);

    return true;
}

void MythPlayer::ReinitOSD(void)
{
    if (m_videoOutput && !FlagIsSet(kVideoIsNull))
    {
        m_osdLock.lock();
        if (!is_current_thread(m_playerThread))
        {
            m_reinitOsd = true;
            m_osdLock.unlock();
            return;
        }
        QRect visible;
        QRect total;
        float aspect = NAN;
        float scaling = NAN;
        m_videoOutput->GetOSDBounds(total, visible, aspect,
                                  scaling, 1.0F);
        if (m_osd)
        {
            m_osd->SetPainter(m_videoOutput->GetOSDPainter());
            int stretch = lroundf(aspect * 100);
            if ((m_osd->Bounds() != visible) ||
                (m_osd->GetFontStretch() != stretch))
            {
                uint old = m_textDisplayMode;
                ToggleCaptions(old);
                m_osd->Reinit(visible, aspect);
                EnableCaptions(old, false);
                if (m_deleteMap.IsEditing())
                {
                    bool const changed = m_deleteMap.IsChanged();
                    m_deleteMap.SetChanged(true);
                    m_deleteMap.UpdateOSD(m_framesPlayed, m_videoFrameRate, m_osd);
                    m_deleteMap.SetChanged(changed);
                }
            }
        }

#ifdef USING_MHEG
        if (GetInteractiveTV())
        {
            QMutexLocker locker(&m_itvLock);
            m_interactiveTV->Reinit(total, visible, aspect);
            m_itvVisible = false;
        }
#endif // USING_MHEG
        m_reinitOsd = false;
        m_osdLock.unlock();
    }
}

void MythPlayer::ReinitVideo(bool ForceUpdate)
{

    bool aspect_only = false;
    {
        MythMultiLocker locker({&m_osdLock, &m_vidExitLock});

        m_videoOutput->SetVideoFrameRate(static_cast<float>(m_videoFrameRate));
        float aspect = (m_forcedVideoAspect > 0) ? m_forcedVideoAspect : m_videoAspect;
        if (!m_videoOutput->InputChanged(m_videoDim, m_videoDispDim, aspect,
                                       m_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;
        }

        if (m_osd)
            m_osd->SetPainter(m_videoOutput->GetOSDPainter());
        ReinitOSD();
    }

    if (!aspect_only)
        ClearAfterSeek();

    if (m_textDisplayMode)
        EnableSubtitles(true);

    AutoVisualise();
}

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) const
{
    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)
{
    m_keyframeDist = (keyframedistance > 0) ? static_cast<uint>(keyframedistance) : m_keyframeDist;
}

/*! \brief Check whether deinterlacing should be enabled
 *
 * If the user has triggered an override, this will always be used (until 'detect'
 * is requested to turn it off again).
 *
 * For H264 material, the decoder will signal when the current frame is on a new
 * GOP boundary and if the frame's interlaced flag does not match the current
 * scan type, the scan type is unlocked. This works well for all test clips
 * with mixed progressive/interlaced sequences.
 *
 * For all other material, we lock the scan type to interlaced when interlaced
 * frames are seen - and do not unlock if we see progressive frames. This is
 * primarily targetted at MPEG2 material where there is a lot of content where
 * the scan type changes frequently - and for no obvious reason. This will result
 * in 'false positives' in some cases but there is no clear approach that works
 * for all cases. The previous behaviour is preserved (i.e. lock to interlaced
 * if interlaced frames are seen) which results in less erratic playback (as the
 * deinterlacers are not continually switched on and off) and correctly deinterlaces
 * material that is not otherwise flagged correctly.
*/
void MythPlayer::AutoDeint(VideoFrame *frame, bool allow_lock)
{
    if (!frame)
        return;

    if ((m_scanOverride > kScan_Detect) && (m_scan != m_scanOverride))
    {
        LOG(VB_PLAYBACK, LOG_INFO, LOC + QString("Locking scan override to '%1'")
            .arg(ScanTypeToString(m_scanOverride, true)));
        SetScanType(m_scanOverride);
    }

    // This is currently only signalled for H264 content
    if (frame->new_gop)
    {
        if (m_scanOverride < kScan_Interlaced &&
            ((frame->interlaced_frame && !is_interlaced(m_scan)) ||
            (!frame->interlaced_frame && is_interlaced(m_scan))))
        {
            LOG(VB_PLAYBACK, LOG_INFO, LOC + "Unlocking frame scan");
            m_scanLocked = false;
        }
    }

    if (m_scanLocked)
        return;

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

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

    SetScanType((m_scanTracker > min_count) ? kScan_Interlaced : kScan_Progressive);
    m_scanLocked  = false;
}

FrameScanType MythPlayer::NextScanOverride(void)
{
    int next = m_scanOverride + 1;
    if (next > kScan_Progressive)
        next = kScan_Detect;
    return static_cast<FrameScanType>(next);
}

void MythPlayer::SetScanOverride(FrameScanType Scan)
{
    if (m_scanOverride == Scan)
        return;
    m_scanOverride = Scan;
    if (m_scanOverride == kScan_Detect)
    {
        m_scanLocked = false;
        m_scanInitialized = false;
        LOG(VB_PLAYBACK, LOG_INFO, LOC + "Reverting to auto detection of scan");
    }
}

FrameScanType MythPlayer::GetScanType(void) const
{
    if (m_scanOverride > kScan_Detect)
        return m_scanOverride;
    return m_scan;
}

void MythPlayer::SetScanType(FrameScanType Scan)
{
    if (!is_current_thread(m_playerThread))
    {
        m_resetScan = Scan;
        return;
    }

    if (!m_videoOutput)
        return;

    m_resetScan = kScan_Ignore;

    if (m_scanInitialized && m_scan == Scan && m_frameIntervalPrev == m_frameInterval)
        return;

    m_scanLocked = (Scan != kScan_Detect);
    m_scanInitialized = true;
    m_frameIntervalPrev = m_frameInterval;

    if (is_interlaced(Scan))
    {
        MythDeintType forced = m_playerCtx->IsPiPOrSecondaryPBP() ? (DEINT_CPU | DEINT_MEDIUM) : DEINT_NONE;
        bool normal = m_playSpeed > 0.99F && m_playSpeed < 1.01F && m_normalSpeed;
        m_doubleFramerate = CanSupportDoubleRate() && normal && !forced;
        m_videoOutput->SetDeinterlacing(true, m_doubleFramerate, forced);
    }
    else if (kScan_Progressive == Scan)
    {
        m_doubleFramerate = false;
        m_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 >= 0 && height >= 0)
    {
        paramsChanged  = true;
        m_videoDim      = m_videoDispDim = QSize(width, height);
        m_videoAspect   = aspect > 0.0F ? aspect : static_cast<float>(width) / height;
    }

    if (!qIsNaN(fps) && fps > 0.0 && fps < 121.0)
    {
        paramsChanged    = true;
        m_videoFrameRate = fps;
        if (m_ffrewSkip != 0 && m_ffrewSkip != 1)
        {
            UpdateFFRewSkip();
        }
        else
        {
            float temp_speed = (m_playSpeed == 0.0F) ?
                m_audio.GetStretchFactor() : m_playSpeed;
            SetFrameInterval(kScan_Progressive,
                             1.0 / (m_videoFrameRate * 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 (m_videoOutput)
        ReinitVideo(ForceUpdate);

    if (IsErrored())
        return;

    // ensure deinterlacers are correctly reset after a change
    m_scanInitialized = false;
    SetScanType(detectInterlace(scan, m_scan, static_cast<float>(m_videoFrameRate),
                                m_videoDispDim.height()));
    m_scanLocked  = false;
    m_scanTracker = (m_scan == kScan_Interlaced) ? 2 : 0;
}


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

void MythPlayer::SetFileLength(int total, int frames)
{
    m_totalLength = total;
    m_totalFrames = frames;
}

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

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

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

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

void MythPlayer::CreateDecoder(char *TestBuffer, int TestSize)
{
    if (AvFormatDecoder::CanHandle(TestBuffer, m_playerCtx->m_buffer->GetFilename(), TestSize))
    {
        SetDecoder(new AvFormatDecoder(this, *m_playerCtx->m_playingInfo, m_playerFlags));
        return;
    }

    if (NuppelDecoder::CanHandle(TestBuffer, TestSize))
        SetDecoder(new NuppelDecoder(this, *m_playerCtx->m_playingInfo));
}

int MythPlayer::OpenFile(int Retries)
{
    // Sanity check
    if (!m_playerCtx || (m_playerCtx && !m_playerCtx->m_buffer))
        return -1;

    LOG(VB_GENERAL, LOG_INFO, LOC + QString("Opening '%1'")
        .arg(m_playerCtx->m_buffer->GetSafeFilename()));

    // Disable hardware acceleration for second PBP
    if (m_playerCtx && (m_playerCtx->IsPBP() && !m_playerCtx->IsPrimaryPBP()) &&
        FlagIsSet(kDecodeAllowGPU))
    {
        m_playerFlags = static_cast<PlayerFlags>(m_playerFlags - kDecodeAllowGPU);
    }

    m_isDummy = false;
    m_liveTV = m_playerCtx->m_tvchain && m_playerCtx->m_buffer->LiveMode();

    // Dummy setup for livetv transtions. Can we get rid of this?
    if (m_playerCtx->m_tvchain)
    {
        int currentposition = m_playerCtx->m_tvchain->GetCurPos();
        if (m_playerCtx->m_tvchain->GetInputType(currentposition) == "DUMMY")
        {
            OpenDummy();
            return 0;
        }
    }

    // Start the RingBuffer read ahead thread
    m_playerCtx->m_buffer->Start();

    /// OSX has a small stack, so we put this buffer on the heap instead.
    char *testbuf = new char[kDecoderProbeBufferSize];
    UnpauseBuffer();

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

    // Test the incoming buffer and create a suitable decoder
    MythTimer bigTimer;
    bigTimer.start();
    int timeout = max((Retries + 1) * 500, 30000);
    while (testreadsize <= kDecoderProbeBufferSize)
    {
        MythTimer peekTimer;
        peekTimer.start();
        while (m_playerCtx->m_buffer->Peek(testbuf, testreadsize) != testreadsize)
        {
            // NB need to allow for streams encountering network congestion
            if (peekTimer.elapsed() > 30000 || bigTimer.elapsed() > timeout
                || m_playerCtx->m_buffer->GetStopReads())
            {
                LOG(VB_GENERAL, LOG_ERR, LOC +
                    QString("OpenFile(): Could not read first %1 bytes of '%2'")
                        .arg(testreadsize)
                        .arg(m_playerCtx->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);
        }

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

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

        delete[] testbuf;
        return -1;
    }

    if (m_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;
    }

    // Pre-init the decoder
    m_decoder->SetSeekSnap(0);
    m_decoder->SetLiveTVMode(m_liveTV);
    m_decoder->SetWatchingRecording(m_watchingRecording);
    m_decoder->SetTranscoding(m_transcoding);

    // Open the decoder
    int result = m_decoder->OpenFile(m_playerCtx->m_buffer, false, testbuf, testreadsize);
    delete[] testbuf;

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

    // Disable audio if necessary
    m_audio.CheckFormat();

    // Livetv, recording or in-progress
    if (result > 0)
    {
        m_hasFullPositionMap = true;
        m_deleteMap.LoadMap();
        m_deleteMap.TrackerReset(0);
    }

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

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

    return IsErrored() ? -1 : 0;
}

void MythPlayer::SetFramesPlayed(uint64_t played)
{
    m_framesPlayed = played;
    if (m_videoOutput)
        m_videoOutput->SetFramesPlayed(played);
}

/** \fn MythPlayer::GetFreeVideoFrames(void)
 *  \brief Returns the number of frames available for decoding onto.
 */
int MythPlayer::GetFreeVideoFrames(void) const
{
    if (m_videoOutput)
        return m_videoOutput->FreeVideoFrames();
    return 0;
}

/// \brief Return a list of frame types that can be rendered directly.
VideoFrameType* MythPlayer::DirectRenderFormats(void)
{
    static VideoFrameType s_defaultFormats[] = { FMT_YV12, FMT_NONE };
    if (m_videoOutput)
        return m_videoOutput->DirectRenderFormats();
    return &s_defaultFormats[0];
}

/**
 *  \brief Removes a frame from the available queue for decoding onto.
 *
 *   This places the frame in the limbo queue, from which frames are
 *   removed if they are added to another queue. Normally a frame is
 *   freed from limbo either by a ReleaseNextVideoFrame() or
 *   DiscardVideoFrame() call; but limboed frames are also freed
 *   during a seek reset.
 */
VideoFrame *MythPlayer::GetNextVideoFrame(void)
{
    if (m_videoOutput)
        return m_videoOutput->GetNextFreeFrame();
    return nullptr;
}

/** \fn MythPlayer::ReleaseNextVideoFrame(VideoFrame*, int64_t)
 *  \brief Places frame on the queue of frames ready for display.
 */
void MythPlayer::ReleaseNextVideoFrame(VideoFrame *buffer,
                                       int64_t timecode,
                                       bool wrap)
{
    if (wrap)
        WrapTimecode(timecode, TC_VIDEO);
    buffer->timecode = timecode;
    m_latestVideoTimecode = timecode;

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

    m_detectLetterBox->Detect(buffer);
    if (m_allPaused)
        CheckAspectRatio(buffer);
}

/** \fn MythPlayer::DiscardVideoFrame(VideoFrame*)
 *  \brief Places frame in the available frames queue.
 */
void MythPlayer::DiscardVideoFrame(VideoFrame *buffer)
{
    if (m_videoOutput)
        m_videoOutput->DiscardFrame(buffer);
}

/** \fn MythPlayer::DiscardVideoFrames(bool)
 *  \brief Places frames in the available frames queue.
 *
 *   If called with 'Keyframe' set to false then all frames
 *   not in use by the decoder are made available for decoding. Otherwise,
 *   all frames are made available for decoding; this is only safe if
 *   the next frame is a keyframe.
 *
 *  \param Keyframe if this is true all frames are placed
 *         in the available queue.
 *  \param Flushed indicates that the decoder has been flushed AND the decoder
 * requires ALL frames to be released (used for VAAPI and VDPAU pause frames)
 */
void MythPlayer::DiscardVideoFrames(bool KeyFrame, bool Flushed)
{
    if (m_videoOutput)
        m_videoOutput->DiscardFrames(KeyFrame, Flushed);
}

bool MythPlayer::HasReachedEof(void) const
{
    EofState eof = GetEof();
    if (eof != kEofStateNone && !m_allPaused)
        return true;
    if (GetEditMode())
        return false;
    if (m_liveTV)
        return false;
    if (!m_deleteMap.IsEmpty() && m_framesPlayed >= m_deleteMap.GetLastFrame())
        return true;
    return false;
}

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

    VideoFrame *retval = nullptr;

    m_vidExitLock.lock();
    if (m_videoOutput)
        retval = m_videoOutput->GetLastShownFrame();

    if (!retval)
        m_vidExitLock.unlock();

    return retval;
}

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

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

void MythPlayer::EmbedInWidget(QRect rect)
{
    if (m_videoOutput)
        m_videoOutput->EmbedInWidget(rect);
    else
    {
        m_embedRect = rect;
        m_embedding = true;
    }
}

void MythPlayer::StopEmbedding(void)
{
    if (m_videoOutput)
    {
        m_videoOutput->StopEmbedding();
        ReinitOSD();
    }
    else
    {
        m_embedRect = QRect();
        m_embedding = false;
    }
}

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

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

    m_osd->EnableTeletext(true, page);
    m_prevTextDisplayMode = m_textDisplayMode;
    m_textDisplayMode = kDisplayTeletextMenu;
}

void MythPlayer::DisableTeletext(void)
{
    QMutexLocker locker(&m_osdLock);
    if (!m_osd)
        return;

    m_osd->EnableTeletext(false, 0);
    m_textDisplayMode = kDisplayNone;

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

void MythPlayer::ResetTeletext(void)
{
    QMutexLocker locker(&m_osdLock);
    if (!m_osd)
        return;

    m_osd->TeletextReset();
}

/** \fn MythPlayer::SetTeletextPage(uint)
 *  \brief Set Teletext NUV Caption page
 */
void MythPlayer::SetTeletextPage(uint page)
{
    m_osdLock.lock();
    DisableCaptions(m_textDisplayMode);
    m_ttPageNum = page;
    m_cc608.SetTTPageNum(m_ttPageNum);
    m_textDisplayMode &= ~kDisplayAllCaptions;
    m_textDisplayMode |= kDisplayNUVTeletextCaptions;
    m_osdLock.unlock();
}

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

    bool handled = true;

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

    return handled;
}

void MythPlayer::ResetCaptions(void)
{
    QMutexLocker locker(&m_osdLock);
    if (!m_osd)
        return;

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

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

    QMutexLocker locker(&m_osdLock);

    bool newTextDesired = (m_textDisplayMode & kDisplayAllTextCaptions) != 0U;
    // Only turn off textDesired if the Operator requested it.
    if (osd_msg || newTextDesired)
        m_textDesired = newTextDesired;
    QString msg = "";
    if (kDisplayNUVTeletextCaptions & mode)
        msg += tr("TXT CAP");
    if (kDisplayTeletextCaptions & mode)
    {
        if (m_decoder != nullptr)
            msg += m_decoder->GetTrackDesc(kTrackTypeTeletextCaptions,
                                       GetTrack(kTrackTypeTeletextCaptions));
        DisableTeletext();
    }
    int preserve = m_textDisplayMode & (kDisplayCC608 | kDisplayTextSubtitle |
                                        kDisplayAVSubtitle | kDisplayCC708 |
                                        kDisplayRawTextSubtitle);
    if ((kDisplayCC608 & mode) || (kDisplayCC708 & mode) ||
        (kDisplayAVSubtitle & mode) || (kDisplayRawTextSubtitle & mode))
    {
        int type = toTrackType(mode);
        if (m_decoder != nullptr)
            msg += m_decoder->GetTrackDesc(type, GetTrack(type));
        if (m_osd)
            m_osd->EnableSubtitles(preserve);
    }
    if (kDisplayTextSubtitle & mode)
    {
        msg += tr("Text subtitles");
        if (m_osd)
            m_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(&m_osdLock);
    bool newTextDesired = (mode & kDisplayAllTextCaptions) != 0U;
    // Only turn off textDesired if the Operator requested it.
    if (osd_msg || newTextDesired)
        m_textDesired = newTextDesired;
    QString msg = "";
    if ((kDisplayCC608 & mode) || (kDisplayCC708 & mode) ||
        (kDisplayAVSubtitle & mode) || kDisplayRawTextSubtitle & mode)
    {
        int type = toTrackType(mode);
        if (m_decoder != nullptr)
            msg += m_decoder->GetTrackDesc(type, GetTrack(type));
        if (m_osd)
            m_osd->EnableSubtitles(mode);
    }
    if (kDisplayTextSubtitle & mode)
    {
        if (m_osd)
            m_osd->EnableSubtitles(kDisplayTextSubtitle);
        msg += tr("Text subtitles");
    }
    if (kDisplayNUVTeletextCaptions & mode)
        msg += tr("TXT %1").arg(m_ttPageNum, 3, 16);
    if ((kDisplayTeletextCaptions & mode) && (m_decoder != nullptr))
    {
        msg += m_decoder->GetTrackDesc(kTrackTypeTeletextCaptions,
                                       GetTrack(kTrackTypeTeletextCaptions));

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

        EnableTeletext(page);
        m_textDisplayMode = kDisplayTeletextCaptions;
    }

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

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

    m_textDisplayMode = mode;
    if (m_textDisplayMode)
        m_prevNonzeroTextDisplayMode = m_textDisplayMode;
    if (osd_msg)
        SetOSDMessage(msg, kOSDTimeout_Med);
}

bool MythPlayer::ToggleCaptions(void)
{
    SetCaptionsEnabled(!((bool)m_textDisplayMode));
    return m_textDisplayMode != 0U;
}

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

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

void MythPlayer::SetCaptionsEnabled(bool enable, bool osd_msg)
{
    QMutexLocker locker(&m_osdLock);
    m_enableCaptions = m_disableCaptions = false;
    uint origMode = m_textDisplayMode;

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

    if (!enable)
    {
        DisableCaptions(origMode, osd_msg);
        return;
    }
    int mode = HasCaptionTrack(m_prevNonzeroTextDisplayMode) ?
        m_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) const
{
    return (kDisplayNUVTeletextCaptions == m_textDisplayMode) ||
           (kDisplayTeletextCaptions    == m_textDisplayMode) ||
           (kDisplayAVSubtitle          == m_textDisplayMode) ||
           (kDisplayCC608               == m_textDisplayMode) ||
           (kDisplayCC708               == m_textDisplayMode) ||
           (kDisplayTextSubtitle        == m_textDisplayMode) ||
           (kDisplayRawTextSubtitle     == m_textDisplayMode) ||
           (kDisplayTeletextMenu        == m_textDisplayMode);
}

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

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

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

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

    uint subtype = toCaptionType(type);
    if (subtype)
    {
        DisableCaptions(m_textDisplayMode, false);
        EnableCaptions(subtype, true);
        if ((kDisplayCC708 == subtype || kDisplayCC608 == subtype) && m_decoder)
        {
            int sid = m_decoder->GetTrackInfo(type, trackNo).m_stream_id;
            if (sid >= 0)
            {
                (kDisplayCC708 == subtype) ? m_cc708.SetCurrentService(sid) :
                                             m_cc608.SetMode(sid);
            }
        }
    }
    return ret;
}

/** \fn MythPlayer::TracksChanged(uint)
 *  \brief This tries to re-enable captions/subtitles if the user
 *         wants them and one of the captions/subtitles tracks has
 *         changed.
 */
void MythPlayer::TracksChanged(uint trackType)
{
    if (trackType >= kTrackTypeSubtitle &&
        trackType <= kTrackTypeTeletextCaptions && m_textDesired)
    {
        m_enableCaptions = true;
    }
}

void MythPlayer::EnableSubtitles(bool enable)
{
    if (enable)
        m_enableCaptions = true;
    else
        m_disableCaptions = true;
}

void MythPlayer::EnableForcedSubtitles(bool enable)
{
    if (enable)
        m_enableForcedSubtitles = true;
    else
        m_disableForcedSubtitles = true;
}

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

void MythPlayer::DoDisableForcedSubtitles(void)
{
    m_disableForcedSubtitles = false;
    m_osdLock.lock();
    if (m_osd)
        m_osd->DisableForcedSubtitles();
    m_osdLock.unlock();
}

void MythPlayer::DoEnableForcedSubtitles(void)
{
    m_enableForcedSubtitles = false;
    if (!m_allowForcedSubtitles)
        return;

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

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

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

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

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

    if (!((m_textDisplayMode == kDisplayTextSubtitle) ||
          (m_textDisplayMode == kDisplayNUVTeletextCaptions) ||
          (m_textDisplayMode == kDisplayNone)))
    {
        int tracktype = toTrackType(m_textDisplayMode);
        if (GetTrack(tracktype) < m_decoder->NextTrack(tracktype))
        {
            SetTrack(tracktype, m_decoder->NextTrack(tracktype));
            return;
        }
    }
    int nextmode = NextCaptionTrack(m_textDisplayMode);
    if ((nextmode == kDisplayTextSubtitle) ||
        (nextmode == kDisplayNUVTeletextCaptions) ||
        (nextmode == kDisplayNone))
    {
        DisableCaptions(m_textDisplayMode, true);
        if (nextmode != kDisplayNone)
            EnableCaptions(nextmode, true);
    }
    else
    {
        int tracktype = toTrackType(nextmode);
        int tracks = m_decoder->GetTrackCount(tracktype);
        if (tracks)
        {
            DisableCaptions(m_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) &&
               m_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      = (m_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 (m_decoder)
        m_fpsMultiplier = m_decoder->GetfpsMultiplier();
    m_frameInterval = static_cast<int>(lround(1000000.0 * frame_period) / m_fpsMultiplier);

    LOG(VB_PLAYBACK, LOG_INFO, LOC + QString("SetFrameInterval Interval:%1 Speed:%2 Scan:%3 (Multiplier: %4)")
        .arg(m_frameInterval).arg(static_cast<double>(m_playSpeed)).arg(toQString(scan)).arg(m_fpsMultiplier));
}

void MythPlayer::ResetAVSync(void)
{
    m_avsyncAvg = 0;
    m_prevTc = 0;
    m_rtcBase = 0;
    m_priorAudioTimecode = 0;
    m_priorVideoTimecode = 0;
    m_lastFix = 0.0;
    LOG(VB_PLAYBACK | VB_TIMESTAMP, LOG_INFO, LOC + "A/V sync reset");
}

void MythPlayer::InitAVSync(void)
{
    m_rtcBase = 0;
    m_priorAudioTimecode = 0;
    m_priorVideoTimecode = 0;
    m_lastFix = 0.0;

    if (!FlagIsSet(kVideoIsNull))
    {
        LOG(VB_PLAYBACK, LOG_INFO, LOC + QString("Display Refresh Rate: %1 Video Frame Rate: %2")
            .arg(1000000.0 / m_display->GetRefreshInterval(m_frameInterval), 0, 'f', 3)
            .arg(1000000.0 / m_frameInterval, 0, 'f', 3));

        SetFrameInterval(m_scan, 1.0 / (m_videoFrameRate * static_cast<double>(m_playSpeed)));

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

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));
}

/*! \brief Keep PiP frame rate in sync with master framerate
 *
 * This is a simple frame rate tracker. If a frame is not due, then just keep
 * the last displayed frame. Otherwise discard frame(s) that are too old.
*/
bool MythPlayer::PipSync(void)
{
    int maxtries = 6;
    int64_t timenow    = m_avTimer.nsecsElapsed() / 1000;
    auto playspeed1000 = static_cast<int64_t>(1000.0F / m_playSpeed);

    while (maxtries--)
    {
        if (!m_videoOutput->ValidVideoFrames())
            return false;

        m_videoOutput->StartDisplayingFrame();
        VideoFrame *last = m_videoOutput->GetLastShownFrame();
        if (!last)
            return false;

        m_videoOutput->ProcessFrame(last, nullptr, m_pipPlayers, m_scan);

        int64_t videotimecode = last->timecode & 0x0000ffffffffffff;
        if (videotimecode != last->timecode)
            videotimecode = m_maxTcVal;
        if (videotimecode == 0)
        {
            m_videoOutput->DoneDisplayingFrame(last);
            return true;
        }
        m_maxTcVal = videotimecode;

        if (m_rtcBase == 0)
            m_rtcBase = timenow - (videotimecode * playspeed1000);

        int64_t framedue = m_rtcBase + (videotimecode * playspeed1000);
        if (framedue > timenow)
            return true;

        m_videoOutput->DoneDisplayingFrame(last);
    }
    return true;
}

#define AVSYNC_MAX_LATE 10000000
void MythPlayer::AVSync(VideoFrame *buffer)
{
    if (m_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 / m_playSpeed);
    bool reset = false;
    // controller gain
    static float const s_av_control_gain = 0.4F;
    // time weighted exponential filter coefficient
    static float const s_sync_fc = 0.9F;

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

        unow = m_avTimer.nsecsElapsed() / 1000;

        if (!m_normalSpeed || FlagIsSet(kMusicChoice))
        {
            framedue = unow + m_frameInterval;
            break;
        }
        // first time or after a seek - setup of m_rtcBase
        if (m_rtcBase == 0)
        {
            // cater for DVB radio
            if (videotimecode == 0)
                videotimecode = m_audio.GetAudioTime();;

            // cater for data only streams (i.e. MHEG)
            bool dataonly = !m_audio.HasAudioIn() && m_videoDim.isEmpty();

            // On first frame we get nothing, so exit out.
            // FIXME - does this mean we skip the first frame? Should be avoidable.
            if (videotimecode == 0 && !dataonly)
                return;

            m_rtcBase = unow - videotimecode * playspeed1000;
            m_maxTcVal = 0;
            m_maxTcFrames = 0;
            m_numDroppedFrames = 0;
            m_timeOffsetBase = static_cast<int64_t>(TranslatePositionFrameToMs(m_framesPlayed, false)) - videotimecode;
        }

        if (videotimecode == 0)
            videotimecode = m_maxTcVal + m_frameInterval/1000;
        int64_t tcincr = videotimecode - m_maxTcVal;
        if (tcincr > 0 || tcincr < -100)
        {
            m_maxTcVal = videotimecode;
            m_maxTcFrames = 0;
        }
        else
        {
            m_maxTcFrames++;
            videotimecode = m_maxTcVal + m_maxTcFrames * m_frameInterval/1000;
        }

        if (m_playSpeed > 0.0F)
            framedue = m_rtcBase + videotimecode * playspeed1000;
        else
            framedue = unow + m_frameInterval / 2;

        // This code is disabled as it appears to cause multiple issues. It is
        // retained for future reference...
        // recalculate m_framesPlayed to conform to actual time code.
        //m_framesPlayed = TranslatePositionMsToFrame(static_cast<uint64_t>(videotimecode + m_timeOffsetBase), false);
        //m_decoder->SetFramesPlayed(static_cast<long long>(m_framesPlayed));

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

        if (lateness <= 30000 && m_priorAudioTimecode > 0
            && m_priorVideoTimecode > 0)
        {
            // Get video in sync with audio
            audio_adjustment = m_priorAudioTimecode - m_priorVideoTimecode;
            // If there is excess audio - throw it away.
            if (audio_adjustment < -200)
            {
                m_audio.Reset();
                audio_adjustment = 0;
            }
            int sign = audio_adjustment < 0 ? -1 : 1;
            float fix_amount = (m_lastFix * s_sync_fc + (1 - s_sync_fc) * audio_adjustment) * sign * s_av_control_gain;
            m_lastFix = fix_amount * sign;
            auto speedup1000 = static_cast<int64_t>(1000 * m_playSpeed);
            m_rtcBase -= static_cast<int64_t>(1000000 * fix_amount * sign / speedup1000);
            if (audio_adjustment * sign > 20)
                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 m_rtcBase if time codes have gone crazy.
        if ((lateness > AVSYNC_MAX_LATE || lateness < - AVSYNC_MAX_LATE))
        {
            framedue = 0;
            m_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;
        }
    }
    m_priorVideoTimecode = videotimecode;
    m_dispTimecode = videotimecode;

    m_outputJmeter && m_outputJmeter->RecordCycleTime();
    m_avsyncAvg = static_cast<int>(m_lastFix * 1000 / s_av_control_gain);

    bool decoderdeint = buffer && buffer->already_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_doubleFramerate = is_interlaced(ps) && m_lastDeinterlacer2x;

    if (buffer && !dropframe)
    {
        m_osdLock.lock();
        m_videoOutput->ProcessFrame(buffer, m_osd, m_pipPlayers, ps);
        m_osdLock.unlock();
    }

    if (!pause_audio && m_avsyncAudioPaused)
    {
        m_avsyncAudioPaused = false;
        m_audio.Pause(false);
    }
    if (pause_audio && !m_avsyncAudioPaused)
    {
        m_avsyncAudioPaused = true;
        m_audio.Pause(true);
    }

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

    if (dropframe)
    {
        LOG(VB_PLAYBACK, LOG_INFO, LOC +
            QString("Dropping frame: Video is behind by %1ms").arg(lateness / 1000));
        m_videoOutput->SetFramesPlayed(static_cast<long long>(++m_framesPlayed));
    }
    else if (!FlagIsSet(kVideoIsNull) && buffer)
    {
        // if we get here, we're actually going to do video output
        m_osdLock.lock();
        m_videoOutput->PrepareFrame(buffer, ps, m_osd);
        m_osdLock.unlock();
        // Don't wait for sync if this is a secondary PBP otherwise
        // the primary PBP will become out of sync
        if (!m_playerCtx->IsPBP() || m_playerCtx->IsPrimaryPBP())
            WaitForTime(framedue);
        // get time codes for calculating difference next time
        m_priorAudioTimecode = m_audio.GetAudioTime();
        m_videoOutput->Show(ps);
        if (m_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_doubleFramerate)
        {
            //second stage of deinterlacer processing
            if (kScan_Interlaced == ps)
                ps = kScan_Intr2ndField;
            m_osdLock.lock();
            // Only double rate CPU deinterlacers require an extra call to ProcessFrame
            if (GetDoubleRateOption(buffer, DEINT_CPU) && !GetDoubleRateOption(buffer, DEINT_SHADER))
                m_videoOutput->ProcessFrame(buffer, m_osd, m_pipPlayers, ps);
            m_videoOutput->PrepareFrame(buffer, ps, m_osd);
            m_osdLock.unlock();
            // Display the second field
            if (!m_playerCtx->IsPBP() || m_playerCtx->IsPrimaryPBP())
            {
                int64_t due = framedue + m_frameInterval / 2;
                WaitForTime(due);
            }
            m_videoOutput->Show(ps);
        }
    }
    else if (!m_playerCtx->IsPiPOrSecondaryPBP())
    {
        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(m_priorAudioTimecode)
            .arg(m_priorVideoTimecode)
            .arg(m_frameInterval)
            .arg(audio_adjustment)
            .arg(m_tcWrap[TC_AUDIO])
            .arg(unow)
            .arg(framedue)
                );

}

void MythPlayer::RefreshPauseFrame(void)
{
    if (m_needNewPauseFrame)
    {
        if (m_videoOutput->ValidVideoFrames())
        {
            m_videoOutput->UpdatePauseFrame(m_dispTimecode, m_scan);
            m_needNewPauseFrame = false;

            if (m_deleteMap.IsEditing())
            {
                m_osdLock.lock();
                if (m_osd)
                    DeleteMap::UpdateOSD(GetLatestVideoTimecode(), m_osd);
                m_osdLock.unlock();
            }
        }
        else
        {
            m_decodeOneFrame = true;
        }
    }
}

void MythPlayer::DisplayPauseFrame(void)
{
    if (!m_videoOutput)
        return;

    if (m_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;
    m_osdLock.lock();
    m_videoOutput->ProcessFrame(nullptr, m_osd, m_pipPlayers, scan);
    m_videoOutput->PrepareFrame(nullptr, scan, m_osd);
    m_osdLock.unlock();
    m_videoOutput->Show(scan);
}

void MythPlayer::SetBuffering(bool new_buffering)
{
    if (!m_buffering && new_buffering)
    {
        LOG(VB_PLAYBACK, LOG_INFO, LOC + "Waiting for video buffers...");
        m_buffering = true;
        m_bufferingStart = QTime::currentTime();
        m_bufferingLastMsg = QTime::currentTime();
    }
    else if (m_buffering && !new_buffering)
    {
        m_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 (!m_videoOutput)
        return false;

    if (!(min_buffers ? (m_videoOutput->ValidVideoFrames() >= min_buffers) :
                        (GetEof() != kEofStateNone) || m_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 ((m_liveTV || watchingTV) && !FlagIsSet(kMusicChoice))
        {
            uint64_t frameCount = GetCurrentFrameCount();
            uint64_t framesLeft = frameCount - m_framesPlayed;
            auto margin = static_cast<uint64_t>(m_videoFrameRate * 3);
            if (framesLeft < margin)
            {
                if (m_rtcBase)
                {
                    LOG(VB_PLAYBACK, LOG_NOTICE, LOC + "Pause to allow live tv catch up");
                    LOG(VB_PLAYBACK, LOG_NOTICE, LOC + QString("Played: %1 Avail: %2 Buffered: %3 Margin: %4")
                        .arg(m_framesPlayed).arg(frameCount)
                        .arg(m_videoOutput->ValidVideoFrames()).arg(margin));
                }
                m_audio.Pause(true);
                m_avsyncAudioPaused = true;
                m_rtcBase = 0;
            }
        }
        usleep(static_cast<uint>(m_frameInterval >> 3));
        int waited_for = m_bufferingStart.msecsTo(QTime::currentTime());
        int last_msg = m_bufferingLastMsg.msecsTo(QTime::currentTime());
        if (last_msg > 100 && !FlagIsSet(kMusicChoice))
        {
            if (++m_bufferingCounter == 10)
                LOG(VB_GENERAL, LOG_NOTICE, LOC +
                    "To see more buffering messages use -v playback");
            if (m_bufferingCounter >= 10)
            {
                LOG(VB_PLAYBACK, LOG_NOTICE, LOC +
                    QString("Waited %1ms for video buffers %2")
                    .arg(waited_for).arg(m_videoOutput->GetFrameStatus()));
            }
            else
            {
                LOG(VB_GENERAL, LOG_NOTICE, LOC +
                    QString("Waited %1ms for video buffers %2")
                        .arg(waited_for).arg(m_videoOutput->GetFrameStatus()));
            }
            m_bufferingLastMsg = QTime::currentTime();
            if (m_audio.IsBufferAlmostFull() && m_framesPlayed < 5
                && gCoreContext->GetBoolSetting("MusicChoiceEnabled", false))
            {
                m_playerFlags = static_cast<PlayerFlags>(m_playerFlags | kMusicChoice);
                LOG(VB_GENERAL, LOG_NOTICE, LOC +
                    "Music Choice program detected - disabling AV Sync.");
                m_avsyncAudioPaused = false;
                m_audio.Pause(false);
            }
            if (waited_for > 7000 && m_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");
                m_audio.Reset();
            }
            // Finish audio pause for sync after 1 second
            // in case of infrequent video frames (e.g. music choice)
            if (m_avsyncAudioPaused && waited_for > 1000)
            {
                m_avsyncAudioPaused = false;
                m_audio.Pause(false);
            }
        }
        int msecs = 500;
        if (preBufferDebug)
            msecs = 1800000;
        if ((waited_for > msecs /*500*/) && !m_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."));
        }
        return false;
    }

    if (!m_avsyncAudioPaused)
        m_audio.Pause(false);
    SetBuffering(false);
    return true;
}

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

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

void MythPlayer::DisplayNormalFrame(bool check_prebuffer)
{
    if (m_allPaused)
        return;
   
    bool ispip = m_playerCtx->IsPIP();
    if (ispip)
    {
        if (!m_videoOutput->ValidVideoFrames())
            return;
    }
    else if (check_prebuffer && !PrebufferEnoughFrames())
    {
        return;
    }

    // clear the buffering state
    SetBuffering(false);

    // If PiP then release the last shown frame to the decoding queue
    if (ispip)
        if (!PipSync())
            return;

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

    // Check aspect ratio
    CheckAspectRatio(frame);

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

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

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

    if (!ispip)
        AVSync(frame);

    // Update details for debug OSD
    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));

    // If PiP then keep this frame for MythPlayer::GetCurrentFrame
    if (!ispip)
        m_videoOutput->DoneDisplayingFrame(frame);
}

void MythPlayer::PreProcessNormalFrame(void)
{
#ifdef USING_MHEG
    // handle Interactive TV
    if (GetInteractiveTV())
    {
        m_osdLock.lock();
        m_itvLock.lock();
        if (m_osd && m_videoOutput->GetOSDPainter())
        {
            InteractiveScreen *window =
                dynamic_cast<InteractiveScreen *>(m_osd->GetWindow(OSD_WIN_INTERACT));
            if ((m_interactiveTV->ImageHasChanged() || !m_itvVisible) && window)
            {
                m_interactiveTV->UpdateOSD(window, m_videoOutput->GetOSDPainter());
                m_itvVisible = true;
            }
        }
        m_itvLock.unlock();
        m_osdLock.unlock();
    }
#endif // USING_MHEG
}

bool MythPlayer::CanSupportDoubleRate(void)
{
    int refreshinterval = 1;
    if (m_display)
        refreshinterval = m_display->GetRefreshInterval(m_frameInterval);

    // 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 = m_frameInterval;
    if (m_frameInterval < 30000)
        realfi = m_frameInterval * 2;
    return ((realfi / 2.0) > (refreshinterval * 0.995));
}

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

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

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

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

#ifdef USING_MHEG
        if (GetInteractiveTV())
        {
            QMutexLocker locker(&m_itvLock);
            m_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 = m_decoder->GetTrackCount(kTrackTypeRawText);
            for (uint i = 0; !hasForcedTextTrack && i < numTextTracks; ++i)
            {
                if (m_decoder->GetTrackInfo(kTrackTypeRawText, i).m_forced)
                {
                    hasForcedTextTrack = true;
                    forcedTrackNumber = i;
                }
            }
        }
        if (hasForcedTextTrack)
            SetTrack(kTrackTypeRawText, forcedTrackNumber);
        else
            SetCaptionsEnabled(m_captionsEnabledbyDefault, false);

        m_osdLock.unlock();
    }

    SetPlaying(true);
    ClearAfterSeek(false);

    m_avsyncAvg = 0;  // Frames till next sync check

    EnableFrameRateMonitor();

    // 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_scanLocked       = false;
    m_doubleFramerate  = false;
    m_scanTracker      = -2;

    if (!FlagIsSet(kVideoIsNull) && m_videoOutput)
    {
        m_doubleFramerate = CanSupportDoubleRate();
        m_videoOutput->SetDeinterlacing(true, m_doubleFramerate);
    }

    InitAVSync();
    AutoVisualise();
}

bool MythPlayer::VideoLoop(void)
{
    ProcessCallbacks();

    if (m_videoPaused || m_isDummy)
    {
        switch (m_playerCtx->GetPIPState())
        {
          case kPIPonTV:
          case kPBPRight:
            break;
          case kPIPOff:
          case kPIPStandAlone:
          case kPBPLeft:  // PrimaryBPB
            usleep(m_frameInterval);
            break;
        }
        DisplayPauseFrame();
    }
    else
        DisplayNormalFrame();

    if (FlagIsSet(kVideoIsNull) && m_decoder)
        m_decoder->UpdateFramesPlayed();
    else if (m_decoder && m_decoder->GetEof() != kEofStateNone)
        ++m_framesPlayed;
    else
        m_framesPlayed = m_videoOutput->GetFramesPlayed();
    return !IsErrored();
}

void MythPlayer::VideoEnd(void)
{
    m_osdLock.lock();
    m_vidExitLock.lock();
    delete m_osd;
    delete m_videoOutput;
    m_osd         = nullptr;
    m_videoOutput = nullptr;
    m_vidExitLock.unlock();
    m_osdLock.unlock();
}

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

    if (m_ffTime <= 0)
    {
        float current   = ComputeSecs(m_framesPlayed, true);
        float dest      = current + seconds;
        float length    = ComputeSecs(m_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 = (m_liveTV || IsWatchingInprogress()) ? -3.0 : -1.0;
        }
        uint64_t target = FindFrame(dest, true);
        m_ffTime = target - m_framesPlayed;
    }
    return m_ffTime > CalcMaxFFTime(m_ffTime, false);
}

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

    if (m_rewindTime <= 0)
    {
        float current = ComputeSecs(m_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);
        m_rewindTime = m_framesPlayed - target;
    }
    return (uint64_t)m_rewindTime >= m_framesPlayed;
}

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

    bool ret = false;
    m_ffTime = m_rewindTime = 0;
    if (frame > m_framesPlayed)
    {
        m_ffTime = frame - m_framesPlayed;
        ret = m_ffTime > CalcMaxFFTime(m_ffTime, false);
    }
    else if (frame < m_framesPlayed)
    {
        m_rewindTime = m_framesPlayed - frame;
        ret = m_ffTime > CalcMaxFFTime(m_ffTime, false);
    }
    return ret;
}


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

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

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

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

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

    bool newIsDummy = m_playerCtx->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 (m_playerCtx->m_buffer->GetType() == kMythBufferMHEG)
    {
        // Restore original ringbuffer
        auto *ic = dynamic_cast<MythInteractiveBuffer*>(m_playerCtx->m_buffer);
        if (ic)
            m_playerCtx->m_buffer = ic->TakeBuffer();
        delete ic;
    }

    m_playerCtx->m_buffer->OpenFile(
        pginfo->GetPlaybackURL(), MythMediaBuffer::kLiveTVOpenTimeout);

    if (!m_playerCtx->m_buffer->IsOpen())
    {
        LOG(VB_GENERAL, LOG_ERR, LOC + "SwitchToProgram's OpenFile failed " +
            QString("(input type: %1).")
            .arg(m_playerCtx->m_tvchain->GetInputType(newid)));
        LOG(VB_GENERAL, LOG_ERR, m_playerCtx->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)
    {
        m_playerCtx->m_tvchain->SetProgram(*pginfo);
        if (m_decoder)
            m_decoder->SetProgramInfo(*pginfo);

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

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

    SetEof(kEofStateNone);

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

    if (discontinuity || newtype)
    {
        CheckTVChain();
        m_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");
    m_fileChanged = true;
}

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

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

    m_playerCtx->SetPlayerChangingBuffers(false);

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

    CheckTVChain();
    m_forcePositionMapSync = true;
}




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

    m_inJumpToProgramPause = true;

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

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

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

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

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

    SendMythSystemPlayEvent("PLAY_CHANGED", pginfo);

    if (m_playerCtx->m_buffer->GetType() == kMythBufferMHEG)
    {
        // Restore original ringbuffer
        auto *ic = dynamic_cast<MythInteractiveBuffer*>(m_playerCtx->m_buffer);
        if (ic)
            m_playerCtx->m_buffer = ic->TakeBuffer();
        delete ic;
    }

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

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

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

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

    SetEof(kEofStateNone);

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

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

    CheckTVChain();
    m_forcePositionMapSync = true;
    m_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 = m_playerCtx->m_tvchain->GetLengthAtCurPos();
    int maxpos = m_playerCtx->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);

    m_playerCtx->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;
    }

    m_framesPlayed = 0;
    m_rewindTime = m_ffTime = 0;
    m_nextPlaySpeed = m_audio.GetStretchFactor();
    m_jumpChapter = 0;
    m_commBreakMap.SkipCommercials(0);
    m_bufferingCounter=0;

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

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

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

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


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

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

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

void MythPlayer::EventStart(void)
{
    m_playerCtx->LockPlayingInfo(__FILE__, __LINE__);
    {
        if (m_playerCtx->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.
            m_playerCtx->m_playingInfo->SetIgnoreBookmark(false);
            m_playerCtx->m_playingInfo->SetIgnoreProgStart(true);
            m_playerCtx->m_playingInfo->SetAllowLastPlayPos(false);
        }
    }
    m_playerCtx->UnlockPlayingInfo(__FILE__, __LINE__);
    m_commBreakMap.LoadMap(m_playerCtx, m_framesPlayed);
}

void MythPlayer::EventLoop(void)
{
    // Handle decoder callbacks
    ProcessCallbacks();

    // Live TV program change
    if (m_fileChanged)
        FileChanged();

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

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

    // enable/disable forced subtitles if signalled by the decoder
    if (m_enableForcedSubtitles)
        DoEnableForcedSubtitles();
    if (m_disableForcedSubtitles)
        DoDisableForcedSubtitles();

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

    // refresh the position map for an in-progress recording while editing
    if (m_hasFullPositionMap && IsWatchingInprogress() && m_deleteMap.IsEditing())
    {
        if (m_editUpdateTimer.hasExpired(2000))
        {
            // N.B. the positionmap update and osd refresh are asynchronous
            m_forcePositionMapSync = true;
            m_osdLock.lock();
            m_deleteMap.UpdateOSD(m_framesPlayed, m_videoFrameRate, m_osd);
            m_osdLock.unlock();
            m_editUpdateTimer.start();
        }
    }

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

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

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

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

    // Change interactive stream if requested
    { QMutexLocker locker(&m_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 (m_ffrewSkip > 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 (m_ffrewSkip < 0 && CalcRWTime(-m_ffrewSkip) >= 0 &&
        (m_framesPlayed <= m_keyframeDist))
    {
        LOG(VB_PLAYBACK, LOG_INFO, LOC + "Near start, stopping rewind.");
        float stretch = (m_ffrewSkip > 0) ? 1.0F : m_audio.GetStretchFactor();
        Play(stretch, true, true);
    }

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

    // Handle speed change
    if (m_playSpeed != m_nextPlaySpeed &&
        (!m_playerCtx->m_tvchain ||
         (m_playerCtx->m_tvchain && !m_playerCtx->m_tvchain->NeedsToJump())))
    {
        ChangeSpeed();
        return;
    }

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

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

        bool videoDrained =
            m_videoOutput && m_videoOutput->ValidVideoFrames() < 1;
        bool audioDrained =
            !m_audio.GetAudioOutput() ||
            m_audio.IsPaused() ||
            m_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(m_videoOutput->ValidVideoFrames()));
            }
            LOG(VB_PLAYBACK, LOG_INFO,
                QString("HasReachedEof() at framesPlayed=%1 totalFrames=%2")
                .arg(m_framesPlayed).arg(GetCurrentFrameCount()));
            Pause();
            SetPlaying(false);
            return;
        }
    }

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

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

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

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

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

    // Handle cutlist skipping
    if (!m_allPaused && (m_ffrewSkip == 1) &&
        m_deleteMap.TrackerWantsToJump(m_framesPlayed, jumpto))
    {
        if (jumpto == m_totalFrames)
        {
            if (!(m_endExitPrompt == 1 && !m_playerCtx->IsPIP() &&
                  m_playerCtx->GetState() == kState_WatchingPreRecorded))
            {
                SetEof(kEofStateDelayed);
            }
        }
        else
        {
            DoJumpToFrame(jumpto, kInaccuracyNone);
        }
    }
}

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

/*! \brief Convenience function to request and wait for a callback into the main thread.
 *
 * This is used by hardware decoders to ensure certain resources are created
 * and destroyed in the UI (render) thread.
*/
void MythPlayer::HandleDecoderCallback(const QString &Debug, DecoderCallback::Callback Function,
                                       void *Opaque1, void *Opaque2)
{
    if (!Function)
        return;

    m_decoderCallbackLock.lock();
    QAtomicInt ready{0};
    QWaitCondition wait;
    LOG(VB_GENERAL, LOG_INFO, LOC + QString("Queuing callback for %1").arg(Debug));
    m_decoderCallbacks.append(DecoderCallback(Debug, Function, &ready, &wait, Opaque1, Opaque2));
    int count = 0;
    while (!ready && !wait.wait(&m_decoderCallbackLock, 100) && (count += 100))
        LOG(VB_GENERAL, LOG_WARNING, QString("Waited %1ms for %2").arg(count).arg(Debug));
    m_decoderCallbackLock.unlock();
}

void MythPlayer::ProcessCallbacks(void)
{
    m_decoderCallbackLock.lock();
    for (auto *it = m_decoderCallbacks.begin(); it != m_decoderCallbacks.end(); ++it)
    {
        if (it->m_function)
        {
            LOG(VB_GENERAL, LOG_INFO, LOC + QString("Executing %1").arg(it->m_debug));
            it->m_function(it->m_opaque1, it->m_opaque2, it->m_opaque3);
        }
        if (it->m_ready)
            it->m_ready->ref();
    }
    m_decoderCallbacks.clear();
    m_decoderCallbackLock.unlock();
}

bool MythPlayer::PauseDecoder(void)
{
    m_decoderPauseLock.lock();
    if (is_current_thread(m_decoderThread))
    {
        m_decoderPaused = true;
        m_decoderThreadPause.wakeAll();
        m_decoderPauseLock.unlock();
        return m_decoderPaused;
    }

    int tries = 0;
    m_pauseDecoder = true;
    while (m_decoderThread && !m_killDecoder && (tries++ < 100) &&
           !m_decoderThreadPause.wait(&m_decoderPauseLock, 100))
    {
        ProcessCallbacks();
        LOG(VB_GENERAL, LOG_WARNING, LOC + "Waited 100ms for decoder to pause");
    }
    m_pauseDecoder = false;
    m_decoderPauseLock.unlock();
    return m_decoderPaused;
}

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

    if (is_current_thread(m_decoderThread))
    {
        m_decoderPaused = false;
        m_decoderThreadUnpause.wakeAll();
        m_decoderPauseLock.unlock();
        return;
    }

    if (!IsInStillFrame())
    {
        int tries = 0;
        m_unpauseDecoder = true;
        while (m_decoderThread && !m_killDecoder && (tries++ < 100) &&
               !m_decoderThreadUnpause.wait(&m_decoderPauseLock, 100))
        {
            ProcessCallbacks();
            LOG(VB_GENERAL, LOG_WARNING, LOC + "Waited 100ms for decoder to unpause");
        }
        m_unpauseDecoder = false;
    }
    m_decoderPauseLock.unlock();
}

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

    m_killDecoder = false;
    m_decoderPaused = start_paused;
    m_decoderThread = new DecoderThread(this, start_paused);
    if (m_decoderThread)
        m_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);

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

    if (m_decoderThread && m_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(m_decoderThread))
    {
        if (m_pauseDecoder)
            PauseDecoder();
        if (m_unpauseDecoder)
            UnpauseDecoder();
    }
}

//// FIXME - move the eof ownership back into MythPlayer
EofState MythPlayer::GetEof(void) const
{
    if (is_current_thread(m_playerThread))
        return m_decoder ? m_decoder->GetEof() : kEofStateImmediate;

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

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

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

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

    if (m_decoder)
        m_decoder->SetEofState(eof);
    m_decoderChangeLock.unlock();
}
//// FIXME end

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

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

        if (m_totalDecoderPause || m_inJumpToProgramPause)
        {
            usleep(1000);
            continue;
        }

        if (m_forcePositionMapSync)
        {
            if (!m_decoderChangeLock.tryLock(1))
                continue;
            if (m_decoder)
            {
                m_forcePositionMapSync = false;
                m_decoder->SyncPositionMap();
            }
            m_decoderChangeLock.unlock();
        }

        if (m_decoderSeek >= 0)
        {
            if (!m_decoderChangeLock.tryLock(1))
                continue;
            if (m_decoder)
            {
                m_decoderSeekLock.lock();
                if (((uint64_t)m_decoderSeek < m_framesPlayed) && m_decoder)
                    m_decoder->DoRewind(m_decoderSeek);
                else if (m_decoder)
                    m_decoder->DoFastForward(m_decoderSeek, !m_transcoding);
                m_decoderSeek = -1;
                m_decoderSeekLock.unlock();
            }
            m_decoderChangeLock.unlock();
        }

        bool obey_eof = (GetEof() != kEofStateNone) &&
                        !(m_playerCtx->m_tvchain && !m_allPaused);
        if (m_isDummy || ((m_decoderPaused || m_ffrewSkip == 0 || obey_eof) &&
                          !m_decodeOneFrame))
        {
            usleep(1000);
            continue;
        }

        DecodeType dt = m_deleteMap.IsEditing() || (m_audio.HasAudioOut() && m_normalSpeed) ?
            kDecodeAV : kDecodeVideo;

        DecoderGetFrame(dt);
        m_decodeOneFrame = false;
    }

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

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

    if (m_ffrewSkip > 0)
    {
        long long delta = m_decoder->GetFramesRead() - m_framesPlayed;
        long long real_skip = CalcMaxFFTime(m_ffrewSkip - m_ffrewAdjust + delta) - delta;
        long long target_frame = m_decoder->GetFramesRead() + real_skip;
        if (real_skip >= 0)
        {
            m_decoder->DoFastForward(target_frame, false);
        }
        long long seek_frame  = m_decoder->GetFramesRead();
        m_ffrewAdjust = seek_frame - target_frame;
    }
    else if (CalcRWTime(-m_ffrewSkip) >= 0)
    {
        DecoderGetFrameREW();
    }
    return DoGetFrame(m_deleteMap.IsEditing() ? kDecodeAV : kDecodeVideo);
}

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

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

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

        if (++tries > 10)
        {
            if (++m_videobufRetries >= 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);
    }
    m_videobufRetries = 0;

    if (!m_decoderChangeLock.tryLock(5))
        return false;
    if (m_killDecoder || !m_decoder || m_pauseDecoder || IsErrored())
    {
        m_decoderChangeLock.unlock();
        return false;
    }

    if (m_ffrewSkip == 1 || m_decodeOneFrame)
        ret = DoGetFrame(decodetype);
    else if (m_ffrewSkip != 0)
        ret = DecoderGetFrameFFREW();
    m_decoderChangeLock.unlock();
    return ret;
}

/*! \brief Get one frame from the decoder.
 *
 * Certain decoders operate asynchronously and will return EAGAIN if a
 * video frame is not yet ready. We handle the retries here in MythPlayer
 * so that we can abort retries if we need to pause or stop the decoder.
 *
 * This is most relevant for MediaCodec decoding when using direct rendering
 * as there are a limited number of decoder output buffers that are retained by
 * the VideoOutput classes (VideoOutput and VideoBuffers) until they have been
 * used.
 *
 * \note The caller must hold m_decoderChangeLock.
 */
bool MythPlayer::DoGetFrame(DecodeType Type)
{
    bool ret = false;
    QElapsedTimer timeout;
    timeout.start();
    bool retry = true;
    // retry for a maximum of 5 seconds
    while (retry && !m_pauseDecoder && !m_killDecoder && !timeout.hasExpired(5000))
    {
        retry = false;
        ret = m_decoder->GetFrame(Type, retry);
        if (retry)
        {
            m_decoderChangeLock.unlock();
            QThread::usleep(10000);
            m_decoderChangeLock.lock();
        }
    }

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

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

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

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

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

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

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

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

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

    m_pipPlayers.remove(pip);
    if (m_videoOutput)
        m_videoOutput->RemovePIP(pip);
    return true;
}

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

    if (m_pipPlayers.isEmpty())
        return m_pipDefaultLoc;

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

    for (auto & ol : ols)
    {
        PIPMap::const_iterator it = m_pipPlayers.begin();
        for (; it != m_pipPlayers.end() && (*it != ol); ++it);

        if (it == m_pipPlayers.end())
            return ol;
    }

    return kPIP_END;
}

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

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

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

/**
 *  \brief Determines if the recording should be considered watched
 *
 *   By comparing the number of framesPlayed to the total number of
 *   frames in the video minus an offset (14%) we determine if the
 *   recording is likely to have been watched to the end, ignoring
 *   end credits and trailing adverts.
 *
 *   PlaybackInfo::SetWatchedFlag is then called with the argument TRUE
 *   or FALSE accordingly.
 *
 *   \param forceWatched Forces a recording watched ignoring the amount
 *                       actually played (Optional)
 */
void MythPlayer::SetWatched(bool forceWatched)
{
    m_playerCtx->LockPlayingInfo(__FILE__, __LINE__);
    if (!m_playerCtx->m_playingInfo)
    {
        m_playerCtx->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 (m_playerCtx->m_playingInfo->IsRecording() &&
        m_playerCtx->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 (m_playerCtx->m_playingInfo->GetRecordingEndTime().toTime_t() <
            m_playerCtx->m_playingInfo->GetScheduledEndTime().toTime_t())
        {
            endtime = m_playerCtx->m_playingInfo->GetRecordingEndTime().toTime_t();
        }
        else
        {
            endtime = m_playerCtx->m_playingInfo->GetScheduledEndTime().toTime_t();
        }

        numFrames = (long long)
            ((endtime -
              m_playerCtx->m_playingInfo->GetRecordingStartTime().toTime_t()) *
             m_videoFrameRate);
#else
        ProgramInfo *pi = m_playerCtx->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) * m_videoFrameRate);
#endif
    }

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

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

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

    m_playerCtx->UnlockPlayingInfo(__FILE__, __LINE__);
}

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

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

    if (gCoreContext->IsDatabaseIgnored() ||
        (m_playerCtx->m_buffer && !m_playerCtx->m_buffer->IsBookmarkAllowed()))
        bookmark = 0;
    else
    {
        m_playerCtx->LockPlayingInfo(__FILE__, __LINE__);
        if (const ProgramInfo *pi = m_playerCtx->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();
        }
        m_playerCtx->UnlockPlayingInfo(__FILE__, __LINE__);
    }

    return bookmark;
}

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

    float temp_speed = (m_playSpeed == 0.0F) ?
        m_audio.GetStretchFactor() : m_playSpeed;
    if (m_playSpeed >= 0.0F && m_playSpeed <= 3.0F)
    {
        skip_changed = (m_ffrewSkip != 1);
        if (m_decoder)
            m_fpsMultiplier = m_decoder->GetfpsMultiplier();
        m_frameInterval = (int) (1000000.0 / m_videoFrameRate / static_cast<double>(temp_speed))
            / m_fpsMultiplier;
        m_ffrewSkip = static_cast<int>(m_playSpeed != 0.0F);
    }
    else
    {
        skip_changed = true;
        m_frameInterval = 200000;
        m_frameInterval = (fabs(m_playSpeed) >=   3.0F) ? 133466 : m_frameInterval;
        m_frameInterval = (fabs(m_playSpeed) >=   5.0F) ? 133466 : m_frameInterval;
        m_frameInterval = (fabs(m_playSpeed) >=   8.0F) ? 250250 : m_frameInterval;
        m_frameInterval = (fabs(m_playSpeed) >=  10.0F) ? 133466 : m_frameInterval;
        m_frameInterval = (fabs(m_playSpeed) >=  16.0F) ? 187687 : m_frameInterval;
        m_frameInterval = (fabs(m_playSpeed) >=  20.0F) ? 150150 : m_frameInterval;
        m_frameInterval = (fabs(m_playSpeed) >=  30.0F) ? 133466 : m_frameInterval;
        m_frameInterval = (fabs(m_playSpeed) >=  60.0F) ? 133466 : m_frameInterval;
        m_frameInterval = (fabs(m_playSpeed) >= 120.0F) ? 133466 : m_frameInterval;
        m_frameInterval = (fabs(m_playSpeed) >= 180.0F) ? 133466 : m_frameInterval;
        float ffw_fps = fabs(static_cast<double>(m_playSpeed)) * m_videoFrameRate;
        float dis_fps = 1000000.0F / m_frameInterval;
        m_ffrewSkip = (int)ceil(ffw_fps / dis_fps);
        m_ffrewSkip = m_playSpeed < 0.0F ? -m_ffrewSkip : m_ffrewSkip;
        m_ffrewAdjust = 0;
    }

    return skip_changed;
}

void MythPlayer::ChangeSpeed(void)
{
    float last_speed = m_playSpeed;
    m_playSpeed   = m_nextPlaySpeed;
    m_normalSpeed = m_nextNormalSpeed;
    m_rtcBase = 0;

    bool skip_changed = UpdateFFRewSkip();

    if (skip_changed && m_videoOutput)
    {
        m_videoOutput->SetPrebuffering(m_ffrewSkip == 1);
        if (m_playSpeed != 0.0F && !(last_speed == 0.0F && m_ffrewSkip == 1))
            DoJumpToFrame(m_framesPlayed + m_ffTime - m_rewindTime, kInaccuracyFull);
    }

    LOG(VB_PLAYBACK, LOG_INFO, LOC + "Play speed: " +
        QString("rate: %1 speed: %2 skip: %3 => new interval %4")
        .arg(m_videoFrameRate).arg(static_cast<double>(m_playSpeed))
        .arg(m_ffrewSkip).arg(m_frameInterval));

    if (m_videoOutput)
        m_videoOutput->SetVideoFrameRate(static_cast<float>(m_videoFrameRate));

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

    if (m_normalSpeed && m_audio.HasAudioOut())
    {
        m_audio.SetStretchFactor(m_playSpeed);
        syncWithAudioStretch();
    }
}

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

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

    m_limitKeyRepeat = false;
    if (desiredFrame < m_videoFrameRate)
        m_limitKeyRepeat = true;

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

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

/**
 * CalcRWTime(rw): rewind rw frames back.
 * Handle livetv transitions if necessary
 *
 */
long long MythPlayer::CalcRWTime(long long rw) const
{
    bool hasliveprev = (m_liveTV && m_playerCtx->m_tvchain &&
                        m_playerCtx->m_tvchain->HasPrev());

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

    m_playerCtx->m_tvchain->JumpToNext(false, ((int64_t)m_framesPlayed - rw) / m_videoFrameRate);

    return -1;
}

/**
 * CalcMaxFFTime(ffframes): forward ffframes forward.
 * Handle livetv transitions if necessay
 */
long long MythPlayer::CalcMaxFFTime(long long ffframes, bool setjump) const
{
    float maxtime = 1.0;
    bool islivetvcur = (m_liveTV && m_playerCtx->m_tvchain &&
                        !m_playerCtx->m_tvchain->HasNext());

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

    long long ret       = ffframes;
    float ff            = ComputeSecs(ffframes, true);
    float secsPlayed    = ComputeSecs(m_framesPlayed, true);
    float secsWritten   = ComputeSecs(m_totalFrames, true);

    m_limitKeyRepeat = false;

    if (m_liveTV && !islivetvcur && m_playerCtx->m_tvchain)
    {
        // recording has completed, totalFrames will always be up to date
        if ((ffframes + m_framesPlayed > m_totalFrames) && setjump)
        {
            ret = -1;
            // Number of frames to be skipped is from the end of the current segment
            m_playerCtx->m_tvchain->JumpToNext(true, ((int64_t)m_totalFrames - (int64_t)m_framesPlayed - ffframes) / m_videoFrameRate);
        }
    }
    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 = m_playerCtx->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) - m_framesPlayed;

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

    return ret;
}

/** \fn MythPlayer::IsReallyNearEnd(void) const
 *  \brief Returns true iff really near end of recording.
 *
 *   This is used by SwitchToProgram() to determine if we are so
 *   close to the end that we need to switch to the next program.
 */
bool MythPlayer::IsReallyNearEnd(void) const
{
    if (!m_videoOutput || !m_decoder)
        return false;

    return m_playerCtx->m_buffer->IsNearEnd(
        m_decoder->GetFPS(), m_videoOutput->ValidVideoFrames());
}

/** \brief Returns true iff near end of recording.
 */
bool MythPlayer::IsNearEnd(void)
{
    if (!m_playerCtx)
        return false;

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

    auto margin = (long long)(m_videoFrameRate * 2);
    margin = (long long) (margin * m_audio.GetStretchFactor());
    bool watchingTV = IsWatchingInprogress();

    uint64_t framesRead = m_framesPlayed;
    uint64_t framesLeft = 0;

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

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

    if (m_liveTV && m_playerCtx->m_tvchain && m_playerCtx->m_tvchain->HasNext())
        return false;

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

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

    return (framesLeft < (uint64_t)margin);
}

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

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

    if (!m_deleteMap.IsEditing() && IsInDelete(desiredFrame))
    {
        uint64_t endcheck = m_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);
    m_ffTime = 0;
    ClearAfterSeek(false);
    return true;
}

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

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

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

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

    bool islivetvcur = (m_liveTV && m_playerCtx->m_tvchain &&
                        !m_playerCtx->m_tvchain->HasNext());

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

    m_decoderSeekLock.lock();
    m_decoderSeek = frame;
    m_decoderSeekLock.unlock();

    int count = 0;
    bool need_clear = false;
    while (m_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.
        ProcessCallbacks();

        usleep(50 * 1000);

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

/** \fn MythPlayer::ClearAfterSeek(bool)
 *  \brief This is to support seeking...
 *
 *   This resets the output classes and discards all
 *   frames no longer being used by the decoder class.
 *
 *   Note: caller should not hold any locks
 *
 *  \param clearvideobuffers This clears the videooutput buffers as well,
 *                           this is only safe if no old frames are
 *                           required to continue decoding.
 */
void MythPlayer::ClearAfterSeek(bool clearvideobuffers)
{
    LOG(VB_PLAYBACK, LOG_INFO, LOC + QString("ClearAfterSeek(%1)")
            .arg(clearvideobuffers));

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

    int64_t savedTC = m_tcWrap[TC_AUDIO];

    for (int j = 0; j < TCTYPESMAX; j++)
        m_tcWrap[j] = m_tcLastVal[j] = 0;

    m_tcWrap[TC_AUDIO] = savedTC;

    m_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(m_textDesired);
    m_deleteMap.TrackerReset(m_framesPlayed);
    m_commBreakMap.SetTracker(m_framesPlayed);
    m_commBreakMap.ResetLastSkip();
    m_needNewPauseFrame = true;
    ResetAVSync();
}

/*! \brief Discard video frames prior to seeking
 * \note This is only used for MediaCodec surface rendering where the decoder will stall
 * waiting for buffers if we do not free those buffers first. This is currently
 * only an issue for recordings and livetv as the decoder is not paused before seeking when
 * using a position map.
 * \note m_watchingRecording does not appear to be accurate - so is currently ignored.
*/
// NOLINTNEXTLINE(readability-convert-member-functions-to-static)
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(m_watchingRecording).arg(m_liveTV));

    if ((Frames < 2) || !m_videoOutput /*|| !(m_liveTV || m_watchingRecording)*/)
        return;

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

void MythPlayer::SetPlayerInfo(TV *tv, QWidget *widget, PlayerContext *ctx)
{
    m_deleteMap.SetPlayerContext(ctx);
    m_tv = tv;
    m_parentWidget = widget;
    m_playerCtx    = ctx;
    m_liveTV       = ctx->m_tvchain;
}

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

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

    if (m_deleteMap.IsFileEditing())
        return false;

    QMutexLocker locker(&m_osdLock);
    if (!m_osd)
        return false;

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

    m_savedAudioTimecodeOffset = m_tcWrap[TC_AUDIO];
    m_tcWrap[TC_AUDIO] = 0;

    m_speedBeforeEdit = m_playSpeed;
    m_pausedBeforeEdit = Pause();
    m_deleteMap.SetEditing(true);
    m_osd->DialogQuit();
    ResetCaptions();
    m_osd->HideAll();

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

    m_deleteMap.UpdateSeekAmount(0);
    m_deleteMap.UpdateOSD(m_framesPlayed, m_videoFrameRate, m_osd);
    m_deleteMap.SetFileEditing(true);
    m_playerCtx->LockPlayingInfo(__FILE__, __LINE__);
    if (m_playerCtx->m_playingInfo)
        m_playerCtx->m_playingInfo->SaveEditing(true);
    m_playerCtx->UnlockPlayingInfo(__FILE__, __LINE__);
    m_editUpdateTimer.start();

    return m_deleteMap.IsEditing();
}

/** \fn MythPlayer::DisableEdit(int)
 *  \brief Leave cutlist edit mode, saving work in 1 of 3 ways.
 *
 *  \param howToSave If 1, save all changes.  If 0, discard all
 *  changes.  If -1, do not explicitly save changes but leave
 *  auto-save information intact in the database.
 */
void MythPlayer::DisableEdit(int howToSave)
{
    QMutexLocker locker(&m_osdLock);
    if (!m_osd)
        return;

    m_deleteMap.SetEditing(false, m_osd);
    if (howToSave == 0)
        m_deleteMap.LoadMap();
    // Unconditionally save to remove temporary marks from the DB.
    if (howToSave >= 0)
        m_deleteMap.SaveMap();
    m_deleteMap.TrackerReset(m_framesPlayed);
    m_deleteMap.SetFileEditing(false);
    m_playerCtx->LockPlayingInfo(__FILE__, __LINE__);
    if (m_playerCtx->m_playingInfo)
        m_playerCtx->m_playingInfo->SaveEditing(false);
    m_playerCtx->UnlockPlayingInfo(__FILE__, __LINE__);
    GetAudio()->removeVisual(&m_audiograph);
    m_audiograph.Reset();
    m_tcWrap[TC_AUDIO] = m_savedAudioTimecodeOffset;
    m_savedAudioTimecodeOffset = 0;

    if (!m_pausedBeforeEdit)
        Play(m_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 = m_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 (m_commBreakMap.HasMap())
            {
                frm_dir_map_t map;
                m_commBreakMap.GetMap(map);
                m_deleteMap.LoadCommBreakMap(map);
            }
        }
        else if (action == ACTION_PREVCUT)
        {
            float old_seekamount = m_deleteMap.GetSeekAmount();
            m_deleteMap.SetSeekAmount(-2);
            HandleArbSeek(false);
            m_deleteMap.SetSeekAmount(old_seekamount);
        }
        else if (action == ACTION_NEXTCUT)
        {
            float old_seekamount = m_deleteMap.GetSeekAmount();
            m_deleteMap.SetSeekAmount(-2);
            HandleArbSeek(true);
            m_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)
        {
            m_deleteMap.NewCut(frame);
            SetOSDMessage(tr("New cut added."), kOSDTimeout_Short);
            refresh = true;
        }
        else if (action == "DELETE")
        {
            m_deleteMap.Delete(frame, tr("Delete"));
            refresh = true;
        }
        else if (action == "REVERT")
        {
            m_deleteMap.LoadMap(tr("Undo Changes"));
            refresh = true;
        }
        else if (action == "REVERTEXIT")
        {
            DisableEdit(0);
            refresh = false;
        }
        else if (action == ACTION_SAVEMAP)
        {
            m_deleteMap.SaveMap();
            refresh = true;
        }
        else if (action == "EDIT" || action == "SAVEEXIT")
        {
            DisableEdit(1);
            refresh = false;
        }
        else
        {
            QString undoMessage = m_deleteMap.GetUndoMessage();
            QString redoMessage = m_deleteMap.GetRedoMessage();
            handled = m_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)
    {
        m_osdLock.lock();
        if (m_osd)
        {
            m_deleteMap.UpdateOSD(m_framesPlayed, m_videoFrameRate, m_osd);
        }
        m_osdLock.unlock();
    }

    return handled;
}

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

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

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

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

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

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

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

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

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

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

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

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

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

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

/** \fn MythPlayer::GetScreenGrab(int,int&,int&,int&,float&)
 *  \brief Returns a one RGB frame grab from a video.
 *
 *   User is responsible for deleting the buffer with delete[].
 *   This also tries to skip any commercial breaks for a more
 *   useful screen grab for previews.
 *
 *   Warning: Don't use this on something you're playing!
 *
 *  \param secondsin [in]  Seconds to seek into the buffer
 *  \param bufflen   [out] Size of buffer returned in bytes
 *  \param vw        [out] Width of buffer returned
 *  \param vh        [out] Height of buffer returned
 *  \param ar        [out] Aspect of buffer returned
 */
char *MythPlayer::GetScreenGrab(int SecondsIn, int &BufferSize,
                                int &FrameWidth, int &FrameHeight, float &AspectRatio)
{
    auto frameNum = static_cast<uint64_t>(SecondsIn * m_videoFrameRate);
    return GetScreenGrabAtFrame(frameNum, false, BufferSize, FrameWidth, FrameHeight, AspectRatio);
}

/**
 *  \brief Returns a one RGB frame grab from a video.
 *
 *   User is responsible for deleting the buffer with delete[].
 *   This also tries to skip any commercial breaks for a more
 *   useful screen grab for previews.
 *
 *   Warning: Don't use this on something you're playing!
 *
 *  \param frameNum  [in]  Frame number to capture
 *  \param absolute  [in]  If False, make sure we aren't in cutlist or Comm brk
 *  \param bufflen   [out] Size of buffer returned in bytes
 *  \param vw        [out] Width of buffer returned
 *  \param vh        [out] Height of buffer returned
 *  \param ar        [out] Aspect of buffer returned
 */
char *MythPlayer::GetScreenGrabAtFrame(uint64_t FrameNum, bool Absolute,
                                       int &BufferSize, int &FrameWidth, int &FrameHeight,
                                       float &AspectRatio)
{
    BufferSize = 0;
    FrameWidth = FrameHeight = 0;
    AspectRatio = 0;

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

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

        // This is probably an audio file, just return a grey frame.
        FrameWidth = 640;
        FrameHeight = 480;
        AspectRatio = 4.0F / 3.0F;

        BufferSize = FrameWidth * FrameHeight * 4;
        char* result = new char[BufferSize];
        memset(result, 0x3f, static_cast<size_t>(BufferSize) * sizeof(char));
        return result;
    }

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

    ClearAfterSeek();
    if (!m_decoderThread)
        DecoderStart(true /*start paused*/);
    uint64_t dummy = 0;
    SeekForScreenGrab(dummy, FrameNum, Absolute);
    int tries = 0;
    while (!m_videoOutput->ValidVideoFrames() && ((tries++) < 500))
    {
        m_decodeOneFrame = true;
        usleep(10000);
        if ((tries & 10) == 10)
            LOG(VB_PLAYBACK, LOG_INFO, LOC + "ScreenGrab: Waited 100ms for video frame");
    }

    VideoFrame *frame = nullptr;
    if (!(frame = m_videoOutput->GetLastDecodedFrame()))
        return nullptr;
    if (!frame->buf)
        return nullptr;

    if (frame->interlaced_frame)
    {
        // Use medium quality - which is currently yadif
        frame->deinterlace_double = DEINT_NONE;
        frame->deinterlace_allowed = frame->deinterlace_single = DEINT_CPU | DEINT_MEDIUM;
        MythDeinterlacer deinterlacer;
        deinterlacer.Filter(frame, kScan_Interlaced, nullptr, true);
    }
    unsigned char *result = CreateBuffer(FMT_RGB32, m_videoDim.width(), m_videoDim.height());
    MythAVCopy copyCtx;
    AVFrame retbuf;
    memset(&retbuf, 0, sizeof(AVFrame));
    copyCtx.Copy(&retbuf, frame, result, AV_PIX_FMT_RGB32);
    FrameWidth = m_videoDispDim.width();
    FrameHeight = m_videoDispDim.height();
    AspectRatio = frame->aspect;

    if (frame)
        DiscardVideoFrame(frame);

    return reinterpret_cast<char*>(result);
}

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

    if (!absolute && m_hasFullPositionMap)
    {
        m_bookmarkSeek = GetBookmark();
        // Use the bookmark if we should, otherwise make sure we aren't
        // in the cutlist or a commercial break
        if (m_bookmarkSeek > 30)
        {
            number = m_bookmarkSeek;
        }
        else
        {
            uint64_t oldnumber = number;
            m_deleteMap.LoadMap();
            m_commBreakMap.LoadMap(m_playerCtx, m_framesPlayed);

            bool started_in_break_map = false;
            while (m_commBreakMap.IsInCommBreak(number) ||
                   IsInDelete(number))
            {
                started_in_break_map = true;
                number += (uint64_t) (30 * m_videoFrameRate);
                if (number >= m_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 * m_videoFrameRate);
                if (number >= m_totalFrames)
                    number = oldnumber;
            }
        }
    }

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

/** \fn MythPlayer::GetRawVideoFrame(long long)
 *  \brief Returns a specific frame from the video.
 *
 *   NOTE: You must call DiscardVideoFrame(VideoFrame*) on
 *         the frame returned, as this marks the frame as
 *         being used and hence unavailable for decoding.
 */
VideoFrame* MythPlayer::GetRawVideoFrame(long long frameNumber)
{
    m_playerCtx->LockPlayingInfo(__FILE__, __LINE__);
    if (m_playerCtx->m_playingInfo)
        m_playerCtx->m_playingInfo->UpdateInUseMark();
    m_playerCtx->UnlockPlayingInfo(__FILE__, __LINE__);

    if (!m_decoderThread)
        DecoderStart(false);

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

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

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

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

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

    int width  = m_videoDispDim.width();
    int height = m_videoDispDim.height();
    infoMap["videocodec"]     = GetEncodingType();
    if (m_decoder)
        infoMap["videocodecdesc"] = m_decoder->GetRawEncodingType();
    infoMap["videowidth"]     = QString::number(width);
    infoMap["videoheight"]    = QString::number(height);
    infoMap["videoframerate"] = QString::number(m_videoFrameRate, '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 (m_decoder)
        return m_decoder->GetRawAudioState();
    return false;
}

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

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

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

    m_framesPlayed = 0;
    ClearAfterSeek();

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

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

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

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

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

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

    if (!m_decoder)
        return false;

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

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

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

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

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

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

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

bool MythPlayer::WriteStoredData(MythMediaBuffer *OutBuffer,
                                 bool Writevideo, long TimecodeOffset)
{
    if (!m_decoder)
        return false;
    if (Writevideo && !m_decoder->GetRawVideoState())
        Writevideo = false;
    m_decoder->WriteStoredData(OutBuffer, Writevideo, TimecodeOffset);
    return Writevideo;
}

void MythPlayer::SetCommBreakMap(frm_dir_map_t &newMap)
{
    m_commBreakMap.SetMap(newMap, m_framesPlayed);
    m_forcePositionMapSync = true;
}

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

    if (m_liveTV || IsWatchingInprogress())
    {
        spos = 1000.0 * m_framesPlayed / m_playerCtx->m_recorder->GetFramesWritten();
    }
    else if (m_totalFrames)
    {
        spos = 1000.0 * m_framesPlayed / m_totalFrames;
    }

    return((int)spos);
}

void MythPlayer::GetPlaybackData(InfoMap &infoMap)
{
    QString samplerate = MythMediaBuffer::BitrateToString(m_audio.GetSampleRate(), true);
    infoMap.insert("samplerate",  samplerate);
    infoMap.insert("filename",    m_playerCtx->m_buffer->GetSafeFilename());
    infoMap.insert("decoderrate", m_playerCtx->m_buffer->GetDecoderRate());
    infoMap.insert("storagerate", m_playerCtx->m_buffer->GetStorageRate());
    infoMap.insert("bufferavail", m_playerCtx->m_buffer->GetAvailableBuffer());
    infoMap.insert("buffersize",  QString::number(m_playerCtx->m_buffer->GetBufferSize() >> 20));
    int avsync = m_avsyncAvg / 1000;
    infoMap.insert("avsync", tr("%1 ms").arg(avsync));

    if (m_videoOutput)
    {
        QString frames = QString("%1/%2").arg(m_videoOutput->ValidVideoFrames())
                                         .arg(m_videoOutput->FreeVideoFrames());
        infoMap.insert("videoframes", frames);
    }
    if (m_decoder)
        infoMap["videodecoder"] = m_decoder->GetCodecDecoderName();
    if (m_outputJmeter)
    {
        infoMap["framerate"] = QString("%1%2%3")
            .arg(m_outputJmeter->GetLastFPS(), 0, 'f', 2)
            .arg(QChar(0xB1, 0))
            .arg(m_outputJmeter->GetLastSD(), 0, 'f', 2);
        infoMap["load"] = m_outputJmeter->GetLastCPUStats();
    }
    GetCodecDescription(infoMap);
}

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

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

    if (IsWatchingInprogress())
        pos = UINT64_MAX;

    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 = m_totalFrames;
    if (IsWatchingInprogress())
        result = m_playerCtx->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    = (m_liveTV && m_playerCtx->m_tvchain &&
                        !m_playerCtx->m_tvchain->HasNext());
    uint64_t length_ms  = TranslatePositionFrameToMs(m_totalFrames, use_cutlist);
    uint64_t position_ms = 0;

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

            if (m_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 =
                    m_playerCtx->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 (!m_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 (m_decoder->GetCodecDecoderName() == "nuppel")
    {
        playbackLen = m_totalLength;
        fixed_playbacklen = true;
    }

    if (m_liveTV && m_playerCtx->m_tvchain)
    {
        info.values["progbefore"] = (int)m_playerCtx->m_tvchain->HasPrev();
        info.values["progafter"]  = (int)m_playerCtx->m_tvchain->HasNext();
        playbackLen = m_playerCtx->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));
        int secsbehind = max((playbackLen - 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;

        QString text1;
        QString text2;
        QString text3;
        if (paddedFields)
        {
            text1 = MythFormatTime(secsplayed, "HH:mm:ss");
            text2 = MythFormatTime(playbackLen, "HH:mm:ss");
            text3 = MythFormatTime(secsbehind, "HH:mm:ss");
        }
        else
        {
            QString fmt = (playbackLen >= ONEHOURINSEC) ? "H:mm:ss" : "mm:ss";
            text1 = MythFormatTime(secsplayed, fmt);
            text2 = MythFormatTime(playbackLen, fmt);

            if (secsbehind >= ONEHOURINSEC)
            {
                text3 = MythFormatTime(secsbehind, "H:mm:ss");
            }
            else if (secsbehind >= ONEMININSEC)
            {
                text3 = MythFormatTime(secsbehind, "mm:ss");
            }
            else
            {
                text3 = tr("%n second(s)", "", secsbehind);
            }
        }

        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_MAX &&
        m_playerCtx->m_recorder && m_playerCtx->m_recorder->IsValidRecorder())
    {
        float recorderFrameRate = m_playerCtx->m_recorder->GetFrameRate();
        if (recorderFrameRate > 0)
            frameRate = recorderFrameRate;
        position = m_playerCtx->m_recorder->GetFramesWritten();
    }
    return m_deleteMap.TranslatePositionFrameToMs(position, frameRate,
                                                use_cutlist);
}

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

int MythPlayer::GetCurrentChapter()
{
    if (m_decoder)
        return m_decoder->GetCurrentChapter(m_framesPlayed);
    return 0;
}

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

bool MythPlayer::DoJumpChapter(int chapter)
{
    int64_t desiredFrame = -1;
    int total = GetNumChapters();
    int current = GetCurrentChapter();

    if (chapter < 0 || chapter > total)
    {

        if (chapter < 0)
        {
            chapter = current -1;
            if (chapter < 0) chapter = 0;
        }
        else if (chapter > total)
        {
            chapter = current + 1;
            if (chapter > total) chapter = total;
        }
    }

    desiredFrame = GetChapter(chapter);
    LOG(VB_PLAYBACK, LOG_INFO, LOC +
        QString("DoJumpChapter: current %1 want %2 (frame %3)")
            .arg(current).arg(chapter).arg(desiredFrame));

    if (desiredFrame < 0)
    {
        LOG(VB_PLAYBACK, LOG_ERR, LOC + QString("DoJumpChapter failed."));
        m_jumpChapter = 0;
        return false;
    }

    DoJumpToFrame(desiredFrame, kInaccuracyNone);
    m_jumpChapter = 0;
    return true;
}

int64_t MythPlayer::GetChapter(int chapter)
{
    if (m_decoder)
        return m_decoder->GetChapter(chapter);
    return 0;
}

InteractiveTV *MythPlayer::GetInteractiveTV(void)
{
#ifdef USING_MHEG
    if (!m_interactiveTV && m_itvEnabled && !FlagIsSet(kNoITV))
    {
        MythMultiLocker locker({&m_osdLock, &m_itvLock});
        if (!m_interactiveTV && m_osd)
            m_interactiveTV = new InteractiveTV(this);
    }
#endif // USING_MHEG
    return m_interactiveTV;
}

bool MythPlayer::ITVHandleAction(const QString &action)
{
    bool result = false;

#ifdef USING_MHEG
    if (!GetInteractiveTV())
        return result;

    QMutexLocker locker(&m_itvLock);
    result = m_interactiveTV->OfferKey(action);
#else
    Q_UNUSED(action);
#endif // USING_MHEG

    return result;
}

/** \fn MythPlayer::ITVRestart(uint chanid, uint cardid, bool isLive)
 *  \brief Restart the MHEG/MHP engine.
 */
void MythPlayer::ITVRestart(uint chanid, uint cardid, bool isLiveTV)
{
#ifdef USING_MHEG
    if (!GetInteractiveTV())
        return;

    QMutexLocker locker(&m_itvLock);
    m_interactiveTV->Restart(chanid, cardid, isLiveTV);
    m_itvVisible = false;
#else
    Q_UNUSED(chanid);
    Q_UNUSED(cardid);
    Q_UNUSED(isLiveTV);
#endif // USING_MHEG
}

// Called from the interactiveTV (MHIContext) thread
void MythPlayer::SetVideoResize(const QRect &videoRect)
{
    QMutexLocker locker(&m_osdLock);
    if (m_videoOutput)
        m_videoOutput->SetVideoResize(videoRect);
}

/** \fn MythPlayer::SetAudioByComponentTag(int tag)
 *  \brief Selects the audio stream using the DVB component tag.
 */
// Called from the interactiveTV (MHIContext) thread
bool MythPlayer::SetAudioByComponentTag(int tag)
{
    QMutexLocker locker(&m_decoderChangeLock);
    if (m_decoder)
        return m_decoder->SetAudioByComponentTag(tag);
    return false;
}

/** \fn MythPlayer::SetVideoByComponentTag(int tag)
 *  \brief Selects the video stream using the DVB component tag.
 */
// Called from the interactiveTV (MHIContext) thread
bool MythPlayer::SetVideoByComponentTag(int tag)
{
    QMutexLocker locker(&m_decoderChangeLock);
    if (m_decoder)
        return m_decoder->SetVideoByComponentTag(tag);
    return false;
}

static inline double SafeFPS(DecoderBase *m_decoder)
{
    if (!m_decoder)
        return 25;
    double fps = m_decoder->GetFPS();
    return fps > 0 ? fps : 25.0;
}

// Called from the interactiveTV (MHIContext) thread
bool MythPlayer::SetStream(const QString &stream)
{
    // The stream name is empty if the stream is closing
    LOG(VB_PLAYBACK, LOG_INFO, LOC + QString("SetStream '%1'").arg(stream));

    QMutexLocker locker(&m_streamLock);
    m_newStream = stream;
    locker.unlock();
    // Stream will be changed by JumpToStream called from EventLoop
    // If successful will call m_interactiveTV->StreamStarted();

    if (stream.isEmpty() && m_playerCtx->m_tvchain &&
        m_playerCtx->m_buffer->GetType() == kMythBufferMHEG)
    {
        // Restore livetv
        SetEof(kEofStateDelayed);
        m_playerCtx->m_tvchain->JumpToNext(false, 0);
        m_playerCtx->m_tvchain->JumpToNext(true, 0);
    }

    return !stream.isEmpty();
}

// Called from EventLoop pn the main application thread
void MythPlayer::JumpToStream(const QString &stream)
{
    LOG(VB_PLAYBACK, LOG_INFO, LOC + "JumpToStream - begin");

    if (stream.isEmpty())
        return; // Shouldn't happen

    Pause();
    ResetCaptions();

    ProgramInfo pginfo(stream);
    SetPlayingInfo(pginfo);

    if (m_playerCtx->m_buffer->GetType() != kMythBufferMHEG)
        m_playerCtx->m_buffer = new MythInteractiveBuffer(stream, m_playerCtx->m_buffer);
    else
        m_playerCtx->m_buffer->OpenFile(stream);

    if (!m_playerCtx->m_buffer->IsOpen())
    {
        LOG(VB_GENERAL, LOG_ERR, LOC + "JumpToStream buffer OpenFile failed");
        SetEof(kEofStateImmediate);
        SetErrored(tr("Error opening remote stream buffer"));
        return;
    }

    m_watchingRecording = false;
    m_totalLength = 0;
    m_totalFrames = 0;
    m_totalDuration = 0;

    if (OpenFile(120) < 0) // 120 retries ~= 60 seconds
    {
        LOG(VB_GENERAL, LOG_ERR, LOC + "JumpToStream OpenFile failed.");
        SetEof(kEofStateImmediate);
        SetErrored(tr("Error opening remote stream"));
        return;
    }

    if (m_totalLength == 0)
    {
        long long len = m_playerCtx->m_buffer->GetRealFileSize();
        m_totalLength = (int)(len / ((m_decoder->GetRawBitrate() * 1000) / 8));
        m_totalFrames = (int)(m_totalLength * SafeFPS(m_decoder));
    }
    LOG(VB_PLAYBACK, LOG_INFO, LOC +
        QString("JumpToStream length %1 bytes @ %2 Kbps = %3 Secs, %4 frames @ %5 fps")
        .arg(m_playerCtx->m_buffer->GetRealFileSize()).arg(m_decoder->GetRawBitrate())
        .arg(m_totalLength).arg(m_totalFrames).arg(m_decoder->GetFPS()) );

    SetEof(kEofStateNone);

    // the bitrate is reset by m_playerCtx->m_buffer->OpenFile()...
    m_playerCtx->m_buffer->UpdateRawBitrate(m_decoder->GetRawBitrate());
    m_decoder->SetProgramInfo(pginfo);

    Play();
    ChangeSpeed();

    m_playerCtx->SetPlayerChangingBuffers(false);
#ifdef USING_MHEG
    if (m_interactiveTV) m_interactiveTV->StreamStarted();
#endif

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

// Called from the interactiveTV (MHIContext) thread
long MythPlayer::GetStreamPos()
{
    return (long)((1000 * GetFramesPlayed()) / SafeFPS(m_decoder));
}

// Called from the interactiveTV (MHIContext) thread
long MythPlayer::GetStreamMaxPos()
{
    long maxpos = (long)(1000 * (m_totalDuration > 0 ? m_totalDuration : m_totalLength));
    long pos = GetStreamPos();
    return maxpos > pos ? maxpos : pos;
}

// Called from the interactiveTV (MHIContext) thread
long MythPlayer::SetStreamPos(long ms)
{
    auto frameNum = (uint64_t)((ms * SafeFPS(m_decoder)) / 1000);
    LOG(VB_PLAYBACK, LOG_INFO, LOC + QString("SetStreamPos %1 mS = frame %2, now=%3")
        .arg(ms).arg(frameNum).arg(GetFramesPlayed()) );
    JumpToFrame(frameNum);
    return ms;
}

// Called from the interactiveTV (MHIContext) thread
void MythPlayer::StreamPlay(bool play)
{
    if (play)
        Play();
    else
        Pause();
}

/** \fn MythPlayer::SetDecoder(DecoderBase*)
 *  \brief Sets the stream decoder, deleting any existing recorder.
 */
void MythPlayer::SetDecoder(DecoderBase *dec)
{
    m_totalDecoderPause = true;
    PauseDecoder();

    {
        while (!m_decoderChangeLock.tryLock(10))
            LOG(VB_GENERAL, LOG_INFO, LOC + "Waited 10ms for decoder lock");
        delete m_decoder;
        m_decoder = dec;
        m_decoderChangeLock.unlock();
    }
    // reset passthrough override
    m_disablePassthrough = false;
    syncWithAudioStretch();
    m_totalDecoderPause = false;
}

bool MythPlayer::PosMapFromEnc(uint64_t start,
                               frm_pos_map_t &posMap,
                               frm_pos_map_t &durMap)
{
    // Reads only new positionmap entries from encoder
    if (!(m_liveTV || (m_playerCtx->m_recorder &&
                     m_playerCtx->m_recorder->IsValidRecorder())))
        return false;

    // if livetv, and we're not the last entry, don't get it from the encoder
    if (HasTVChainNext())
        return false;

    LOG(VB_PLAYBACK, LOG_INFO, LOC +
        QString("Filling position map from %1 to %2") .arg(start).arg("end"));

    m_playerCtx->m_recorder->FillPositionMap(start, -1, posMap);
    m_playerCtx->m_recorder->FillDurationMap(start, -1, durMap);

    return true;
}

void MythPlayer::SetErrored(const QString &reason)
{
    QMutexLocker locker(&m_errorLock);

    if (m_videoOutput)
        m_errorType |= m_videoOutput->GetError();

    if (m_errorMsg.isEmpty())
    {
        m_errorMsg = reason;
    }
    else
    {
        LOG(VB_GENERAL, LOG_ERR, LOC + QString("%1").arg(reason));
    }
}

void MythPlayer::ResetErrored(void)
{
    QMutexLocker locker(&m_errorLock);

    m_errorMsg = QString();
}

bool MythPlayer::IsErrored(void) const
{
    QMutexLocker locker(&m_errorLock);
    return !m_errorMsg.isEmpty();
}

QString MythPlayer::GetError(void) const
{
    QMutexLocker locker(&m_errorLock);
    return m_errorMsg;
}

void MythPlayer::ToggleNightMode(void)
{
    if (!m_videoOutput)
        return;

    if (!(m_videoOutput->GetSupportedPictureAttributes() &
          kPictureAttributeSupported_Brightness))
        return;

    int b = m_videoOutput->GetPictureAttribute(kPictureAttribute_Brightness);
    int c = 0;
    bool has_contrast = (m_videoOutput->GetSupportedPictureAttributes() &
                         kPictureAttributeSupported_Contrast) != 0;
    if (has_contrast)
        c = m_videoOutput->GetPictureAttribute(kPictureAttribute_Contrast);

    int nm = gCoreContext->GetNumSetting("NightModeEnabled", 0);
    QString msg;
    if (!nm)
    {
        msg = tr("Enabled Night Mode");
        b -= kNightModeBrightenssAdjustment;
        c -= kNightModeContrastAdjustment;
    }
    else
    {
        msg = tr("Disabled Night Mode");
        b += kNightModeBrightenssAdjustment;
        c += kNightModeContrastAdjustment;
    }
    b = clamp(b, 0, 100);
    c = clamp(c, 0, 100);

    gCoreContext->SaveSetting("NightModeEnabled", nm ? "0" : "1");
    m_videoOutput->SetPictureAttribute(kPictureAttribute_Brightness, b);
    if (has_contrast)
        m_videoOutput->SetPictureAttribute(kPictureAttribute_Contrast, c);

    SetOSDMessage(msg, kOSDTimeout_Med);
}

bool MythPlayer::CanVisualise(void)
{
    if (m_videoOutput)
        return m_videoOutput->
            CanVisualise(&m_audio, GetMythMainWindow()->GetRenderDevice());
    return false;
}

bool MythPlayer::IsVisualising(void)
{
    if (m_videoOutput)
        return m_videoOutput->GetVisualisation();
    return false;
}

QString MythPlayer::GetVisualiserName(void)
{
    if (m_videoOutput)
        return m_videoOutput->GetVisualiserName();
    return QString("");
}

QStringList MythPlayer::GetVisualiserList(void)
{
    if (m_videoOutput)
        return m_videoOutput->GetVisualiserList();
    return QStringList();
}

bool MythPlayer::EnableVisualisation(bool enable, const QString &name)
{
    if (m_videoOutput)
        return m_videoOutput->EnableVisualisation(&m_audio, enable, name);
    return false;
}

/*! \brief Enable visualisation if possible, there is no video and user has requested.
*/
void MythPlayer::AutoVisualise(void)
{
    if (!m_videoOutput || !m_audio.HasAudioIn() || !m_videoDim.isEmpty())
        return;

    if (!CanVisualise() || IsVisualising())
        return;

    auto visualiser = gCoreContext->GetSetting("AudioVisualiser", "");
    if (!visualiser.isEmpty())
        EnableVisualisation(true, visualiser);
}

void MythPlayer::SetOSDMessage(const QString &msg, OSDTimeout timeout)
{
    QMutexLocker locker(&m_osdLock);
    if (!m_osd)
        return;

    InfoMap info;
    info.insert("message_text", msg);
    m_osd->SetText("osd_message", info, timeout);
}

void MythPlayer::SetOSDStatus(const QString &title, OSDTimeout timeout)
{
    QMutexLocker locker(&m_osdLock);
    if (!m_osd)
        return;

    osdInfo info;
    calcSliderPos(info);
    info.text.insert("title", title);
    m_osd->SetText("osd_status", info.text, timeout);
    m_osd->SetValues("osd_status", info.values, timeout);
}

void MythPlayer::SaveTotalDuration(void)
{
    if (!m_decoder)
        return;

    m_decoder->SaveTotalDuration();
}

void MythPlayer::ResetTotalDuration(void)
{
    if (!m_decoder)
        return;

    m_decoder->ResetTotalDuration();
}

void MythPlayer::SaveTotalFrames(void)
{
    if (!m_decoder)
        return;

    m_decoder->SaveTotalFrames();
}

void MythPlayer::syncWithAudioStretch()
{
    if (m_decoder && m_audio.HasAudioOut())
    {
        float stretch = m_audio.GetStretchFactor();
        m_disablePassthrough |= (stretch < 0.99F) || (stretch > 1.01F);
        LOG(VB_PLAYBACK, LOG_INFO, LOC +
            QString("Stretch Factor %1, %2 passthru ")
            .arg(m_audio.GetStretchFactor())
            .arg((m_disablePassthrough) ? "disable" : "allow"));
        SetDisablePassThrough(m_disablePassthrough);
    }
}

void MythPlayer::SetDisablePassThrough(bool disabled)
{
    if (m_decoder && m_audio.HasAudioOut())
    {
        m_decoder->SetDisablePassThrough(m_disablePassthrough || disabled);
    }
}

void MythPlayer::ForceSetupAudioStream(void)
{
    if (m_decoder && m_audio.HasAudioOut())
    {
        m_decoder->ForceSetupAudioStream();
    }
}

static unsigned dbg_ident(const MythPlayer *player)
{
    static QMutex   s_dbgLock;
    static unsigned s_dbgNextIdent = 0;
    using DbgMapType = QMap<const MythPlayer*, unsigned>;
    static DbgMapType s_dbgIdent;

    QMutexLocker locker(&s_dbgLock);
    DbgMapType::iterator it = s_dbgIdent.find(player);
    if (it != s_dbgIdent.end())
        return *it;
    return s_dbgIdent[player] = s_dbgNextIdent++;
}

/* vim: set expandtab tabstop=4 shiftwidth=4: */