Method EffectOutputTracks

libraries/lib-effects/EffectOutputTracks.cpp:20–77

int EffectOutputTracks::nEffectsDone = 0;

EffectOutputTracks::EffectOutputTracks(
   TrackList& tracks, EffectType effectType,
   std::optional<TimeInterval> effectTimeInterval, bool allSyncLockSelected,
   bool stretchSyncLocked)
    : mTracks { tracks }
    , mEffectType { effectType }
{
   assert(
      !effectTimeInterval.has_value() ||
      effectTimeInterval->first <= effectTimeInterval->second);
   // Reset map
   mIMap.clear();
   mOMap.clear();
   mOutputTracks = TrackList::Create(mTracks.GetOwner());

   auto trackRange = mTracks.Any() +
      [&] (const Track *pTrack) {
         return allSyncLockSelected
         ? SyncLock::IsSelectedOrSyncLockSelected(*pTrack)
         : dynamic_cast<const WaveTrack*>(pTrack) && pTrack->GetSelected();
      };

   for (auto aTrack : trackRange) {
      auto pTrack = aTrack->Duplicate();
      mIMap.push_back(aTrack);
      mOMap.push_back(pTrack.get());
      mOutputTracks->Add(pTrack);
   }

   if (
      effectTimeInterval.has_value() &&
      effectTimeInterval->second > effectTimeInterval->first)
   {
      TimeStretching::WithClipRenderingProgress(
         [&](const ProgressReporter& parent)
         {
            const auto tracksToUnstretch =
               (stretchSyncLocked ? mOutputTracks->Any<WaveTrack>() :
                                    mOutputTracks->Selected<WaveTrack>()) +
               [&](const WaveTrack* pTrack)
            {
               return TimeStretching::HasPitchOrSpeed(
                  *pTrack, effectTimeInterval->first,
                  effectTimeInterval->second);
            };
            BasicUI::SplitProgress(
               tracksToUnstretch.begin(), tracksToUnstretch.end(),
               [&](WaveTrack* aTrack, const ProgressReporter& child) {
                  aTrack->ApplyPitchAndSpeed(effectTimeInterval, child);
               },
               parent);
         });
   }

   // Invariant is established
   assert(mIMap.size() == mOutputTracks->Size());
   assert(mIMap.size() == mOMap.size());
}