Method DoSetLinkType

libraries/lib-track/Track.cpp:151–196

}

void Track::DoSetLinkType(LinkType linkType, bool completeList)
{
   auto oldType = GetLinkType();
   if (linkType == oldType)
      // No change
      return;

   if (oldType == LinkType::None) {
      // Becoming linked

      // First ensure that the previous does not link to this
      if (auto partner = GetLinkedTrack())
         partner->mLinkType = LinkType::None;
      assert(!GetLinkedTrack());

      // Change my link type
      mLinkType = linkType;

      // Keep link consistency, while still in un-zipped state
      if (auto partner = GetLinkedTrack()) {
         partner->mLinkType = LinkType::None;
         partner->CopyGroupProperties(*this);
      }
   }
   else if (linkType == LinkType::None) {
      // Becoming unlinked
      if (HasLinkedTrack()) {
         if (auto partner = GetLinkedTrack()) {
            // Make independent copy of group data in the partner, which should
            // have had none
            ChannelGroupAttachments &base = *partner;
            // Intentional slice assignment deep-copies the attachment array:
            base = *this;
            partner->CopyGroupProperties(*this);
            partner->mLinkType = LinkType::None;
         }
      }
      mLinkType = LinkType::None;
   }
   else
      // Remaining linked, changing the type
      mLinkType = linkType;

   // Assertion checks only in a debug build, does not have side effects!
   assert(!completeList || LinkConsistencyCheck());
}

Track *Track::GetLinkedTrack() const
{