// TnzCore includes

#include "tsystem.h"

#include "tstopwatch.h"

#include "tthreadmessage.h"

#include "timagecache.h"

#include "tlevel_io.h"

#include "trasterimage.h"

#include "timageinfo.h"

#include "trop.h"

#include "tsop.h"

// TnzLib includes

#include "toonz/toonzscene.h"

#include "toonz/sceneproperties.h"

#include "toonz/txsheet.h"

#include "toonz/tcamera.h"

#include "toonz/preferences.h"

#include "toonz/trasterimageutils.h"

#include "toonz/levelupdater.h"

#include "toutputproperties.h"

#include "toonz/boardsettings.h"

// tcg includes

#include "tcg/tcg_macros.h"

// Qt includes

#include <qcoreapplication></qcoreapplication>

#include <qtimer></qtimer>

#include "toonz/movierenderer.h"

//**************************************************************************

//    Local Namespace  stuff

//**************************************************************************

namespace {

int RenderSessionId = 0;

//---------------------------------------------------------

void addMark(const TRasterP &mark, TRasterImageP img) {

  TRasterP raster = img->getRaster();

  if (raster->getLx() >= mark->getLx() && raster->getLy() >= mark->getLy()) {

    TRasterP ras = raster->clone();

    int borderx = troundp(0.035 * (ras->getLx() - mark->getLx()));

    int bordery = troundp(0.035 * (ras->getLy() - mark->getLy()));

    TRect rect = TRect(borderx, bordery, borderx + mark->getLx() - 1,

                       bordery + mark->getLy() - 1);

    TRop::over(ras->extract(rect), mark);

    img->setRaster(ras);

  }

}

//---------------------------------------------------------

void getRange(ToonzScene *scene, bool isPreview, int &from, int &to) {

  TSceneProperties *sprop = scene->getProperties();

  int step;

  if (isPreview)

    sprop->getPreviewProperties()->getRange(from, to, step);

  else

    sprop->getOutputProperties()->getRange(from, to, step);

  if (to < 0) {

    TXsheet *xs = scene->getXsheet();

    // NOTE: Use of numeric_limits::min is justified since the type is

    // *INTERGRAL*.

    from = (std::numeric_limits<int>::max)(),</int>

    to   = (std::numeric_limits<int>::min)();</int>

    for (int k = 0; k < xs->getColumnCount(); ++k) {

      int r0, r1;

      xs->getCellRange(k, r0, r1);

       TXshColumn *col         = xs->getColumn(k);

      TXshSoundColumn *sndCol = col ? col->getSoundColumn() : 0;

      if (sndCol) r0  = 0;

      from = std::min(from, r0), to = std::max(to, r1);

    }

  }

}

//---------------------------------------------------------

QString getPreviewName(unsigned long renderSessionId) {

  return "previewed" + QString::number(renderSessionId) + ".noext";

}

}  // namespace

//**************************************************************************

//    MovieRenderer::Imp  definition

//**************************************************************************

class MovieRenderer::Imp final : public TRenderPort, public TSmartObject {

public:

  ToonzScene *m_scene;

  TRenderer m_renderer;

  TFilePath m_fp;

  TRenderSettings m_renderSettings;

  TDimension m_frameSize;

  double m_xDpi, m_yDpi;

  std::set<movierenderer::listener *=""> m_listeners;</movierenderer::listener>

  std::unique_ptr<levelupdater> m_levelUpdaterA, m_levelUpdaterB;</levelupdater>

  TSoundTrackP m_st;

  std::map<double, std::pair<trasterp,="" trasterp="">> m_toBeSaved;</double,>

  std::vector<std::pair<double, tfxpair="">> m_framesToBeRendered;</std::pair<double,>

  std::string m_renderCacheId;

  /*--- 同じラスタのキャッシュを使いまわすとき、

          最初のものだけガンマをかけ、以降はそれを使いまわすようにする。

  ---*/

  std::map<double, bool=""> m_toBeAppliedGamma;</double,>

  TThread::Mutex m_mutex;

  int m_renderSessionId;

  long m_whiteSample;

  int m_nextFrameIdxToSave;

  int m_savingThreadsCount;

  bool m_firstCompletedRaster;

  bool m_failure;

  bool m_cacheResults;

  bool m_preview;

  bool m_movieType;

  bool m_seqRequired;

  bool m_waitAfterFinish;

public:

  Imp(ToonzScene *scene, const TFilePath &moviePath, int threadCount,

      bool cacheResults);

  ~Imp();

  // TRenderPort methods

  void onRenderRasterCompleted(const RenderData &renderData) override;

  void onRenderFailure(const RenderData &renderData, TException &e) override;

  /*-- キャンセル時にはm_overallRenderedRegionを更新しない --*/

  void onRenderFinished(bool isCanceled = false) override;

  void doRenderRasterCompleted(const RenderData &renderData);

  void doPreviewRasterCompleted(const RenderData &renderData);

  // Helper methods

  void prepareForStart();

  void addSoundtrack(int r0, int r1, double fps, int boardDuration = 0);

  void postProcessImage(const TRasterImageP &img, bool has64bitOutputSupport,

                        const TRasterP &mark, int frame);

  //! Saves the specified rasters at the specified time; returns whether the

  //! frames were successfully saved, and

  //! the associated time-adjusted level frame.

  std::pair<bool, int=""> saveFrame(double frame,</bool,>

                                 const std::pair<trasterp, trasterp=""> &rasters);</trasterp,>

  std::string getRenderCacheId();

  // returns board duration in frame

  int addBoard();

};

//---------------------------------------------------------

MovieRenderer::Imp::Imp(ToonzScene *scene, const TFilePath &moviePath,

                        int threadCount, bool cacheResults)

    : m_scene(scene)

    , m_renderer(threadCount)

    , m_fp(moviePath)

    , m_frameSize(scene->getCurrentCamera()->getRes())

    , m_xDpi(72)

    , m_yDpi(72)

    , m_renderSessionId(RenderSessionId++)

    , m_nextFrameIdxToSave(0)

    , m_savingThreadsCount(0)

    , m_whiteSample(0)

    , m_firstCompletedRaster(

          true)         //< I know, sounds weird - it's just set to false

    , m_failure(false)  //  AFTER the first completed raster gets processed

    , m_cacheResults(cacheResults)

    , m_preview(moviePath.isEmpty())

    , m_movieType(isMovieType(moviePath))

    , m_seqRequired(isSequencialRequired(moviePath)) {

  m_renderCacheId =

      m_fp.withName(m_fp.getName() + "#RENDERID" +

                    QString::number(m_renderSessionId).toStdString())

          .getLevelName();

  m_renderer.addPort(this);

  m_waitAfterFinish = m_movieType && !m_seqRequired && threadCount > 1;

}

//---------------------------------------------------------

MovieRenderer::Imp::~Imp() {

  m_renderer.removePort(this);  // Please, note: a TRenderer instance is

                                // currently a shared-pointer-like

}  // object to a private worker. *That* object may outlive the TRenderer

   // instance.

//---------------------------------------------------------

void MovieRenderer::Imp::prepareForStart() {

  struct locals {

    static void eraseUncompatibleExistingLevel(

        const TFilePath &fp, const TDimension &imageSize)  // nothrow

    {

      assert(!fp.isEmpty());

      if (TSystem::doesExistFileOrLevel(fp)) {

        bool remove = false;

        // In case the raster specifics are different from those of a currently

        // existing movie, erase it

        try {

          if (fp.isFfmpegType()) {

            TSystem::removeFileOrLevel(fp);

          } else {

            TLevelReaderP lr(fp);

            lr->loadInfo();

            const TImageInfo *info = lr->getImageInfo();

            if (!info || info->m_lx != imageSize.lx ||

                info->m_ly != imageSize.ly)

              TSystem::removeFileOrLevel(fp);  // nothrow

          }

        } catch (...) {

          // Same if the level could not be read/opened

          TSystem::removeFileOrLevel(fp);  // nothrow

        }

        // NOTE: The level removal procedure could still fail.

        // In this case, no signaling takes place. The level readers will throw

        // when the time to write on the file comes, leading to a render

        // failure.

      }

    }

  };

  TOutputProperties *oprop = m_scene->getProperties()->getOutputProperties();

  double frameRate         = (double)oprop->getFrameRate();

  /*-- Frame rate の stretch --*/

  double stretchFactor = oprop->getRenderSettings().m_timeStretchTo /

                         oprop->getRenderSettings().m_timeStretchFrom;

  frameRate *= stretchFactor;

  // Get the shrink

  int shrinkX = m_renderSettings.m_shrinkX,

      shrinkY = m_renderSettings.m_shrinkY;

  // Build the render area

  TPointD cameraPos(-0.5 * m_frameSize.lx, -0.5 * m_frameSize.ly);

  TDimensionD cameraRes(double(m_frameSize.lx) / shrinkX,

                        double(m_frameSize.ly) / shrinkY);

  TDimension cameraResI(cameraRes.lx, cameraRes.ly);

  TRectD renderArea(cameraPos.x, cameraPos.y, cameraPos.x + cameraRes.lx,

                    cameraPos.y + cameraRes.ly);

  setRenderArea(renderArea);

  if (!m_fp.isEmpty()) {

    try  // Construction of a LevelUpdater may throw (well, almost ANY operation

         // on a LevelUpdater

    {    // could throw). But due to backward compatibility this function is

         // assumed to be non-throwing.

      if (!m_renderSettings.m_stereoscopic) {

        locals::eraseUncompatibleExistingLevel(m_fp, cameraResI);

        m_levelUpdaterA.reset(new LevelUpdater(

            m_fp, oprop->getFileFormatProperties(m_fp.getType()),

            oprop->formatTemplateFId()));

        m_levelUpdaterA->getLevelWriter()->setFrameRate(frameRate);

        m_fp = m_levelUpdaterA->getLevelWriter()->getFilePath();

      } else {

        TFilePath leftFp  = m_fp.withName(m_fp.getName() + "_l");

        TFilePath rightFp = m_fp.withName(m_fp.getName() + "_r");

        locals::eraseUncompatibleExistingLevel(leftFp, cameraResI);

        locals::eraseUncompatibleExistingLevel(rightFp, cameraResI);

        m_levelUpdaterA.reset(new LevelUpdater(

            leftFp, oprop->getFileFormatProperties(leftFp.getType()),

            oprop->formatTemplateFId()));

        m_levelUpdaterA->getLevelWriter()->setFrameRate(frameRate);

        leftFp = m_levelUpdaterA->getLevelWriter()->getFilePath();

        m_levelUpdaterB.reset(new LevelUpdater(

            rightFp, oprop->getFileFormatProperties(rightFp.getType()),

            oprop->formatTemplateFId()));

        m_levelUpdaterB->getLevelWriter()->setFrameRate(frameRate);

        rightFp = m_levelUpdaterB->getLevelWriter()->getFilePath();

      }

    } catch (...) {

      // If we get here, it's because one of the LevelUpdaters could not be

      // created. So, let's say

      // that if one could not be created, then ALL OF THEM couldn't (ie saving

      // is not possible at all).

      m_levelUpdaterA.reset();

      m_levelUpdaterB.reset();

    }

  }

}

//---------------------------------------------------------

void MovieRenderer::Imp::addSoundtrack(int r0, int r1, double fps,

                                       int boardDuration) {

  TCG_ASSERT(r0 <= r1, return );

  TXsheet::SoundProperties *prop =

      new TXsheet::SoundProperties();  // Ownership will be surrendered ...

  prop->m_frameRate = fps;

  TSoundTrack *snd = m_scene->getXsheet()->makeSound(prop);  // ... here

  if (!snd) {

    // No soundtrack

    m_whiteSample = (r1 - r0 + 1) * 918;  // 918?? wtf... I don't think it has

    return;  // any arcane meaning - but i'm not touching it.

  }          // My impression would be that... no sound implies

             // no access to m_whiteSample, no?

  double samplePerFrame = snd->getSampleRate() / fps;

  // Extract the useful part of scene soundtrack

  TSoundTrackP snd1 = snd->extract((TINT32)(r0 * samplePerFrame),

                                   (TINT32)(r1 * samplePerFrame));

  assert(!m_st);

  if (!m_st) {

    // First, add white sound before the 'from' instant

    m_st          = TSoundTrack::create(snd1->getFormat(), m_whiteSample);

    m_whiteSample = 0;  // Why?  Probably being pedantic here... I guess

  }

  // Then, add the rest

  TINT32 fromSample = m_st->getSampleCount();

  TINT32 numSample =

      std::max(TINT32((r1 - r0 + 1) * samplePerFrame), snd1->getSampleCount());

  m_st = TSop::insertBlank(m_st, fromSample, numSample + m_whiteSample);

  m_st->copy(snd1, TINT32(fromSample + m_whiteSample));

  // insert blank sound for clapperboard

  if (boardDuration > 0)

    m_st = TSop::insertBlank(m_st, 0, TINT32(boardDuration * samplePerFrame));

  m_whiteSample = 0;

}

//---------------------------------------------------------

void MovieRenderer::Imp::onRenderRasterCompleted(const RenderData &renderData) {

  if (m_preview)

    doPreviewRasterCompleted(renderData);

  else

    doRenderRasterCompleted(renderData);

}

//---------------------------------------------------------

void MovieRenderer::Imp::postProcessImage(const TRasterImageP &img,

                                          bool has64bitOutputSupport,

                                          const TRasterP &mark, int frame) {

  img->setDpi(m_xDpi, m_yDpi);

  if (img->getRaster()->getPixelSize() == 8 && !has64bitOutputSupport) {

    TRaster32P aux(img->getRaster()->getLx(), img->getRaster()->getLy());

    TRop::convert(aux, img->getRaster());

    img->setRaster(aux);

  }

  if (mark) addMark(mark, img);

  if (Preferences::instance()->isSceneNumberingEnabled())

    TRasterImageUtils::addGlobalNumbering(img, m_scene->getSceneName(), frame);

}

//---------------------------------------------------------------------

std::pair<bool, int=""> MovieRenderer::Imp::saveFrame(</bool,>

    double frame, const std::pair<trasterp, trasterp=""> &rasters) {</trasterp,>

  bool success = false;

  // Build the frame number to write to

  double stretchFac = double(m_renderSettings.m_timeStretchTo) /

                      m_renderSettings.m_timeStretchFrom;

  int fr = (stretchFac != 1) ? tround(frame * stretchFac) : int(frame);

  int boardDuration = 0;

  if (m_movieType) {

    BoardSettings *bs =

        m_scene->getProperties()->getOutputProperties()->getBoardSettings();

    boardDuration = (bs->isActive()) ? bs->getDuration() : 0;

  }

  TFrameId fid(fr + 1 + boardDuration);

  if (m_levelUpdaterA.get()) {

    assert(m_levelUpdaterB.get() || !rasters.second);

    // Analyze writer

    bool has64bitOutputSupport = false;

    {

      if (TImageWriterP writerA =

              m_levelUpdaterA->getLevelWriter()->getFrameWriter(fid))

        has64bitOutputSupport = writerA->is64bitOutputSupported();

      // NOTE: If the writer could not be retrieved, the updater will throw.

      // Failure will be caught then.

    }

    // Prepare the images to be flushed

    TRasterP rasterA = rasters.first, rasterB = rasters.second;

    assert(rasterA);

    /*--- 同じラスタのキャッシュを使いまわすとき、

    最初のものだけガンマをかけ、以降はそれを使いまわすようにする。

---*/

    if (m_renderSettings.m_gamma != 1.0 && m_toBeAppliedGamma[frame]) {

      TRop::gammaCorrect(rasterA, m_renderSettings.m_gamma);

      if (rasterB) TRop::gammaCorrect(rasterB, m_renderSettings.m_gamma);

    }

    // Flush images

    try {

      TRasterImageP imgA(rasterA);

      postProcessImage(imgA, has64bitOutputSupport, m_renderSettings.m_mark,

                       fid.getNumber());

      m_levelUpdaterA->update(fid, imgA);

      if (rasterB) {

        TRasterImageP imgB(rasterB);

        postProcessImage(imgB, has64bitOutputSupport, m_renderSettings.m_mark,

                         fid.getNumber());

        m_levelUpdaterB->update(fid, imgB);

      }

      // Should no more throw from here on

      if (m_cacheResults) {

        if (imgA->getRaster()->getPixelSize() == 8) {

          // Convert 64-bit images to 32 - cached images are supposed to be

          // 32-bit

          TRaster32P aux(imgA->getRaster()->getLx(),

                         imgA->getRaster()->getLy());

          TRop::convert(aux, imgA->getRaster());

          imgA->setRaster(aux);

        }

        TImageCache::instance()->add(

            m_renderCacheId + std::to_string(fid.getNumber()), imgA);

      }

      success = true;

    } catch (...) {

      // Nothing. The images could not be saved for whatever reason.

      // Failure is reported.

    }

  }

  return std::make_pair(success, fr);

}

//---------------------------------------------------------------------

void MovieRenderer::Imp::doRenderRasterCompleted(const RenderData &renderData) {

  assert(!(m_cacheResults &&

           m_levelUpdaterB.get()));  // Cannot cache results on stereoscopy

  QMutexLocker locker(&m_mutex);

  bool allowMT    = Preferences::instance()->getFfmpegMultiThread();

  bool requireSeq = allowMT ? m_seqRequired : m_movieType;

  // Build soundtrack at the first time a frame is completed - and the filetype

  // is that of a movie.

  if (m_firstCompletedRaster && m_movieType && !m_st) {

    int boardDuration = addBoard();

    int from, to;

    getRange(m_scene, false, from, to);

    TLevelP oldLevel(m_levelUpdaterA->getInputLevel());

    if (oldLevel) {

      from = std::min(from, oldLevel->begin()->first.getNumber() - 1);

      to   = std::max(to, (--oldLevel->end())->first.getNumber() - 1);

    }

    addSoundtrack(

        from, to,

        m_scene->getProperties()->getOutputProperties()->getFrameRate(),

        boardDuration);

    if (m_st) {

      m_levelUpdaterA->getLevelWriter()->saveSoundTrack(m_st.getPointer());

      if (m_levelUpdaterB.get())

        m_levelUpdaterB->getLevelWriter()->saveSoundTrack(m_st.getPointer());

    }

  }

  // Output frames must be *cloned*, since the supplied rasters will be

  // overwritten by m_renderer

  TRasterP toBeSavedRasA = renderData.m_rasA->clone();

  TRasterP toBeSavedRasB =

      renderData.m_rasB ? renderData.m_rasB->clone() : TRasterP();

  m_toBeSaved[renderData.m_frames[0]] =

      std::make_pair(toBeSavedRasA, toBeSavedRasB);

  m_toBeAppliedGamma[renderData.m_frames[0]] = true;

  // Prepare the cluster's frames to be saved (possibly in the future)

  std::vector<double>::const_iterator jt;</double>

  for (jt = renderData.m_frames.begin(), ++jt; jt != renderData.m_frames.end();

       ++jt) {

    m_toBeSaved[*jt]        = std::make_pair(toBeSavedRasA, toBeSavedRasB);

    m_toBeAppliedGamma[*jt] = false;

  }

  // Attempt flushing as many frames as possible to the level updater(s)

  while (!m_toBeSaved.empty()) {

    std::map<double, std::pair<trasterp,="" trasterp="">>::iterator ft =</double,>

        m_toBeSaved.begin();

    // In the *movie type* case, frames must be saved sequentially.

    // If the frame is not the next one in the sequence, wait until *that* frame

    // is available.

    if (requireSeq &&

        (ft->first != m_framesToBeRendered[m_nextFrameIdxToSave].first))

      break;

    // This thread will be the one processing ft - remove it from the map to

    // prevent another

    // thread from interfering

    double frame                          = ft->first;

    std::pair<trasterp, trasterp=""> rasters = ft->second;</trasterp,>

    ++m_nextFrameIdxToSave;

    m_toBeSaved.erase(ft);

    // Save current frame

    std::pair<bool, int=""> savedFrame;</bool,>

    {

      // Time the saving procedure

      struct SaveTimer {

        int &m_count;

        SaveTimer(int &count) : m_count(count) {

          if (m_count++ == 0) TStopWatch::global(0).start();

        }

        ~SaveTimer() {

          if (--m_count == 0) TStopWatch::global(0).stop();

        }

      } saveTimer(m_savingThreadsCount);

      // Unlock the mutex only in case this is NOT a movie type. Single images

      // can be saved concurrently.

      struct MutexUnlocker {

        QMutexLocker *m_locker;

        ~MutexUnlocker() {

          if (m_locker) m_locker->relock();

        }

      } unlocker = {requireSeq ? (QMutexLocker *)0

                               : (locker.unlock(), &locker)};

      savedFrame = saveFrame(frame, rasters);

    }

    // Report status and deal with responses

    bool okToContinue = true;

    std::set<movierenderer::listener *="">::iterator lt = m_listeners.begin();</movierenderer::listener>

    if (savedFrame.first) {

      for (; lt != m_listeners.end(); ++lt)

        okToContinue &= (*lt)->onFrameCompleted(savedFrame.second);

    } else {

      for (; lt != m_listeners.end(); ++lt) {

        TException e;

        okToContinue &= (*lt)->onFrameFailed(savedFrame.second, e);

      }

    }

    if (!okToContinue) {

      // Some listener invoked termination of the render procedure. It seems

      // it's their right

      // to do so. I wonder what happens if two listeners would disagree on the

      // matter...

      // BTW stop the rendering, alright.

      {

        int from, to;

        getRange(m_scene, false, from,

                 to);  // It's ok since cancels can only happen from Toonz...

        for (int i = from; i < to; i++)

          TImageCache::instance()->remove(m_renderCacheId +

                                          std::to_string(i + 1));

      }

      m_renderer.stopRendering();

      m_levelUpdaterA

          .reset();  // No more saving. Further attempts to save images

      m_levelUpdaterB.reset();  // will be rejected and treated as failures.

    }

  }

  m_firstCompletedRaster = false;

}

//---------------------------------------------------------

void MovieRenderer::Imp::doPreviewRasterCompleted(

    const RenderData &renderData) {

  // Most probably unused now. I'm not reviewing this.

  assert(!m_levelUpdaterA.get());

  QMutexLocker sl(&m_mutex);

  QString name = getPreviewName(m_renderSessionId);

  TRasterP ras = renderData.m_rasA->clone();

  if (renderData.m_rasB) {

    assert(m_renderSettings.m_stereoscopic);

    TRop::makeStereoRaster(ras, renderData.m_rasB);

  }

  TRasterImageP img(ras);

  img->setDpi(m_xDpi, m_yDpi);

  try {

    if (renderData.m_info.m_mark != TRasterP())

      addMark(renderData.m_info.m_mark, img);

    if (img->getRaster()->getPixelSize() == 8) {

      TRaster32P aux(img->getRaster()->getLx(), img->getRaster()->getLy());

      TRop::convert(aux, img->getRaster());

      img->setRaster(aux);

    }

    QString frameName = name + QString::number(renderData.m_frames[0] + 1);

    TImageCache::instance()->add(frameName.toStdString(), img);

    // controlla se ci sono frame(uguali ad altri) da mettere in cache

    std::vector<double>::const_iterator jt;</double>

    for (jt = renderData.m_frames.begin(), ++jt;

         jt != renderData.m_frames.end(); ++jt) {

      frameName = name + QString::number(*jt + 1);

      TImageCache::instance()->add(frameName.toStdString(), img);

    }

  } catch (...) {

  }

  std::set<movierenderer::listener *="">::iterator listenerIt =</movierenderer::listener>

      m_listeners.begin();

  bool okToContinue = true;

  for (; listenerIt != m_listeners.end(); ++listenerIt)

    okToContinue &= (*listenerIt)->onFrameCompleted(renderData.m_frames[0]);

  if (!okToContinue) {

    // Svuoto la cache nel caso in cui si esce dal render prima della fine

    int from, to;

    getRange(m_scene, true, from, to);

    for (int i = from; i < to; i++) {

      QString frameName = name + QString::number(i + 1);

      TImageCache::instance()->remove(frameName.toStdString());

    }

    m_renderer.stopRendering();

  }

  m_firstCompletedRaster = false;

}

//---------------------------------------------------------

void MovieRenderer::Imp::onRenderFailure(const RenderData &renderData,

                                         TException &e) {

  QMutexLocker sl(&m_mutex);  // Lock as soon as possible.

                              // No sense making it later in this case!

  m_failure = true;

  bool allowMT    = Preferences::instance()->getFfmpegMultiThread();

  bool requireSeq = allowMT ? m_seqRequired : m_movieType;

  // If the saver object has already been destroyed - or it was never

  // created to begin with, nothing to be done

  if (!m_levelUpdaterA.get()) return;  // The preview case would fall here

  // Flush out as much as we can of the frames that were already rendered

  m_toBeSaved[0.0] =

      std::make_pair(TRasterP(), TRasterP());  // ?? Why is this ??

  std::map<double, std::pair<trasterp,="" trasterp="">>::iterator it =</double,>

      m_toBeSaved.begin();

  while (it != m_toBeSaved.end()) {

    if (requireSeq &&

        (it->first != m_framesToBeRendered[m_nextFrameIdxToSave].first))

      break;

    // o_o!

    // I would have expected that at least those frames that were computed could

    // attempt saving! Why is this not addressed? They're even marked as

    // 'failed'!

    double stretchFac = (double)renderData.m_info.m_timeStretchTo /

                        renderData.m_info.m_timeStretchFrom;

    int fr;

    if (stretchFac != 1)

      fr = tround(it->first * stretchFac);

    else

      fr = (int)it->first;

    // No saving? Really?

    std::set<movierenderer::listener *="">::iterator lt = m_listeners.begin();</movierenderer::listener>

    bool okToContinue                                = true;

    for (; lt != m_listeners.end(); ++lt)

      okToContinue &= (*lt)->onFrameFailed((int)it->first, e);

    if (!okToContinue) m_renderer.stopRendering();

    ++m_nextFrameIdxToSave;

    m_toBeSaved.erase(it++);

  }

}

//---------------------------------------------------------

void MovieRenderer::Imp::onRenderFinished(bool isCanceled) {

  TFilePath levelName(

      m_levelUpdaterA.get()

          ? m_fp

          : TFilePath(getPreviewName(m_renderSessionId).toStdWString()));

  if (m_waitAfterFinish) {

    // Wait half a second to add some stability before finalizing

    QEventLoop eloop;

    QTimer timer;

    timer.connect(&timer, &QTimer::timeout, &eloop, &QEventLoop::quit);

    timer.start(500);

    eloop.exec();

  }

  // Close updaters. After this, the output levels should be finalized on disk.

  m_levelUpdaterA.reset();

  m_levelUpdaterB.reset();

  if (!m_failure) {

    // Inform listeners of the render completion

    std::set<movierenderer::listener *="">::iterator it;</movierenderer::listener>

    for (it = m_listeners.begin(); it != m_listeners.end(); ++it)

      (*it)->onSequenceCompleted(levelName);

    // I wonder why listeners are not informed of a failed sequence, btw...

  }

  release();  // The movieRenderer is released by the render process. It could

              // eventually be deleted.

}

//---------------------------------------------------------

int MovieRenderer::Imp::addBoard() {

  BoardSettings *boardSettings =

      m_scene->getProperties()->getOutputProperties()->getBoardSettings();

  if (!boardSettings->isActive()) return 0;

  int duration = boardSettings->getDuration();

  if (duration == 0) return 0;

  // Get the image size

  int shrinkX = m_renderSettings.m_shrinkX,

      shrinkY = m_renderSettings.m_shrinkY;

  TDimensionD cameraRes(double(m_frameSize.lx) / shrinkX,

                        double(m_frameSize.ly) / shrinkY);

  TDimension cameraResI(cameraRes.lx, cameraRes.ly);

  TRaster32P boardRas =

      boardSettings->getBoardRaster(cameraResI, shrinkX, m_scene);

  if (m_levelUpdaterA.get()) {

    // Flush images

    try {

      TRasterImageP img(boardRas);

      for (int f = 0; f < duration; f++) {

        m_levelUpdaterA->update(TFrameId(f + 1), img);

        if (m_levelUpdaterB.get())

          m_levelUpdaterB->update(TFrameId(f + 1), img);

      }

    } catch (...) {

      // Nothing. The images could not be saved for whatever reason.

      // Failure is reported.

    }

  }

  return duration;

}

//======================================================================================

//======================

//    MovieRenderer

//----------------------

MovieRenderer::MovieRenderer(ToonzScene *scene, const TFilePath &moviePath,

                             int threadCount, bool cacheResults)

    : m_imp(new Imp(scene, moviePath, threadCount, cacheResults)) {

  m_imp->addRef();  // See MovieRenderer::start(). Can't just delete it in the

                    // dtor.

}

//---------------------------------------------------------

MovieRenderer::~MovieRenderer() { m_imp->release(); }

//---------------------------------------------------------

void MovieRenderer::setRenderSettings(const TRenderSettings &renderSettings) {

  m_imp->m_renderSettings = renderSettings;

}

//---------------------------------------------------------

void MovieRenderer::setDpi(double xDpi, double yDpi) {

  m_imp->m_xDpi = xDpi;

  m_imp->m_yDpi = yDpi;

}

//---------------------------------------------------------

void MovieRenderer::addListener(Listener *listener) {

  m_imp->m_listeners.insert(listener);

}

//---------------------------------------------------------

void MovieRenderer::addFrame(double frame, const TFxPair &fxPair) {

  m_imp->m_framesToBeRendered.push_back(std::make_pair(frame, fxPair));

}

//---------------------------------------------------------

void MovieRenderer::enablePrecomputing(bool on) {

  m_imp->m_renderer.enablePrecomputing(on);

}

//---------------------------------------------------------

bool MovieRenderer::isPrecomputingEnabled() const {

  return m_imp->m_renderer.isPrecomputingEnabled();

}

//---------------------------------------------------------

void MovieRenderer::start() {

  m_imp->prepareForStart();