Method ProcessWithTimeWarper

libraries/lib-builtin-effects/SoundTouchBase.cpp:73–168

#endif

bool SoundTouchBase::ProcessWithTimeWarper(InitFunction initer,
                                             const TimeWarper &warper,
                                             bool preserveLength)
{
   // Assumes that mSoundTouch has already been initialized
   // by the subclass for subclass-specific parameters. The
   // time warper should also be set.

   // Check if this effect will alter the selection length; if so, we need
   // to operate on sync-lock selected tracks.
   bool mustSync = true;
   if (mT1 == warper.Warp(mT1)) {
      mustSync = false;
   }

   //Iterate over each track
   // Needs all for sync-lock grouping.
   EffectOutputTracks outputs { *mTracks, GetType(), { { mT0, mT1 } }, true };
   bool bGoodResult = true;

   mPreserveLength = preserveLength;
   mCurTrackNum = 0;
   m_maxNewLength = 0.0;

   outputs.Get().Any().VisitWhile(bGoodResult,
      [&](auto &&fallthrough){ return [&](LabelTrack &lt) {
         if ( !(lt.GetSelected() ||
                (mustSync && SyncLock::IsSyncLockSelected(lt))) )
            return fallthrough();
         if (!ProcessLabelTrack(&lt, warper))
            bGoodResult = false;
      }; },
#ifdef USE_MIDI
      [&](auto &&fallthrough){ return [&](NoteTrack &nt) {
         if (!(nt.GetSelected() ||
               (mustSync && SyncLock::IsSyncLockSelected(nt))))
            return fallthrough();
         if (!ProcessNoteTrack(&nt, warper))
            bGoodResult = false;
      }; },
#endif
      [&](auto &&fallthrough){ return [&](WaveTrack &orig) {
         if (!orig.GetSelected())
            return fallthrough();

         if (!orig.NIntervals())
            return fallthrough();

         // Process only if the right marker is to the right of the left marker
         if (mT1 > mT0) {
            //Transform the marker timepoints to samples
            const auto start = orig.TimeToLongSamples(mT0);
            const auto end = orig.TimeToLongSamples(mT1);

            const auto tempTrack = orig.EmptyCopy();
            auto &out = *tempTrack;

            const auto pSoundTouch = std::make_unique<soundtouch::SoundTouch>();