remove shifts, operations, and make caches node-agnostic

app/node/output/viewer/viewer.h

@@ -60,10 +60,6 @@ public:
 
   void set_parameters_from_footage(const QVector<ViewerOutput *> footage);
 
-  void ShiftVideoCache(const rational& from, const rational& to);
-  void ShiftAudioCache(const rational& from, const rational& to);
-  void ShiftCache(const rational& from, const rational& to);
-
   virtual void InvalidateCache(const TimeRange& range, const QString& from, int element, InvalidateCacheOptions options) override;
 
   VideoParams GetVideoParams(int index = 0) const
@@ -146,16 +142,6 @@ public:
   const rational &GetVideoLength() const { return video_length_; }
   const rational &GetAudioLength() const { return audio_length_; }
 
-  FrameHashCache* video_frame_cache()
-  {
-    return &video_frame_cache_;
-  }
-
-  AudioPlaybackCache* audio_playback_cache()
-  {
-    return &audio_playback_cache_;
-  }
-
   TimelinePoints* GetTimelinePoints()
   {
     return timeline_points_;
@@ -253,10 +239,6 @@ protected:
 
   virtual rational VerifyLengthInternal(Track::Type type) const;
 
-  virtual void ShiftVideoEvent(const rational &from, const rational &to);
-
-  virtual void ShiftAudioEvent(const rational &from, const rational &to);
-
   virtual void InputValueChangedEvent(const QString& input, int element) override;
 
   int AddStream(Track::Type type, const QVariant &value);
@@ -266,10 +248,6 @@ private:
   rational video_length_;
   rational audio_length_;
 
-  FrameHashCache video_frame_cache_;
-
-  AudioPlaybackCache audio_playback_cache_;
-
   VideoParams cached_video_params_;
 
   AudioParams cached_audio_params_;