preliminary track/channel support

app/node/output/timeline/timeline.cpp

@@ -75,9 +75,9 @@ void TimelineOutput::AttachTimeline(TimelinePanel *timeline)
     attached_timeline_->SetTimebase(rational(1001, 30000));
     // END TEST CODE
 
-    if (attached_track() != nullptr) {
+    foreach (TrackOutput* track, track_cache_) {
       // Defer to the track to make all the block UI items necessary
-      attached_track()->GenerateBlockWidgets();
+      track->GenerateBlockWidgets();
     }
 
     //TimelineView* view = attached_timeline_->view();
@@ -97,6 +97,22 @@ void TimelineOutput::Process(const rational &time)
   Q_UNUSED(time)
 }
 
+int TimelineOutput::GetTrackIndex(TrackOutput *track)
+{
+  return track_cache_.indexOf(track);
+}
+
+rational TimelineOutput::GetSequenceLength()
+{
+  rational length = 0;
+
+  foreach (TrackOutput* track, track_cache_) {
+    length = qMax(length, track->in());
+  }
+
+  return length;
+}
+
 TrackOutput *TimelineOutput::attached_track()
 {
   return ValueToPtr<TrackOutput>(track_input_->get_value(0));
@@ -150,6 +166,8 @@ void TimelineOutput::TrackConnectionRemoved(NodeEdgePtr edge)
 void TimelineOutput::TrackAddedBlock(Block *block)
 {
   if (attached_timeline_ != nullptr) {
+    qDebug() << "track index lmao:" << GetTrackIndex(static_cast<TrackOutput*>(sender()));
+
     attached_timeline_->view()->AddBlock(block);
   }
 }

app/node/output/timeline/timeline.h

@@ -47,6 +47,10 @@ public slots:
   virtual void Process(const rational &time) override;
 
 private:
+  int GetTrackIndex(TrackOutput* track);
+
+  rational GetSequenceLength();
+
   TrackOutput* attached_track();
 
   TimelinePanel* attached_timeline_;

app/node/output/track/track.cpp

@@ -111,6 +111,11 @@ TrackOutput *TrackOutput::next_track()
   return ValueToPtr<TrackOutput>(track_input_->get_value(0));
 }
 
+NodeInput *TrackOutput::track_input()
+{
+  return track_input_;
+}
+
 NodeOutput* TrackOutput::track_output()
 {
   return track_output_;

app/node/output/track/track.h

@@ -50,7 +50,9 @@ public:
 
   TrackOutput* next_track();
 
-  NodeOutput *track_output();
+  NodeInput* track_input();
+
+  NodeOutput* track_output();
 
 signals:
   /**