remove shifts, operations, and make caches node-agnostic

app/node/node.h

@@ -39,6 +39,8 @@
 #include "node/inputimmediate.h"
 #include "node/param.h"
 #include "render/audioparams.h"
+#include "render/audioplaybackcache.h"
+#include "render/framehashcache.h"
 #include "render/job/generatejob.h"
 #include "render/job/samplejob.h"
 #include "render/job/shaderjob.h"
@@ -219,6 +221,16 @@ public:
     return HasInputWithID(id);
   }
 
+  FrameHashCache* video_frame_cache() const
+  {
+    return video_cache_;
+  }
+
+  AudioPlaybackCache* audio_playback_cache() const
+  {
+    return audio_cache_;
+  }
+
   struct Position
   {
     Position(const QPointF &p = QPointF(0, 0), bool e = false)
@@ -798,19 +810,6 @@ public:
     InvalidateCache(range, from.input(), from.element(), options);
   }
 
-  /**
-   * @brief Limits cache invalidation temporarily
-   *
-   * If you intend to do a number of operations in quick succession, you can optimize it by running
-   * this function with EndOperation().
-   */
-  virtual void BeginOperation();
-
-  /**
-   * @brief Stops limiting cache invalidation and flushes changes
-   */
-  virtual void EndOperation();
-
   /**
    * @brief Adjusts time that should be sent to nodes connected to certain inputs.
    *
@@ -1030,11 +1029,6 @@ protected:
    */
   void IgnoreInvalidationsFrom(const QString &input_id);
 
-  int GetOperationStack() const
-  {
-    return operation_stack_;
-  }
-
   enum GizmoScaleHandles {
     kGizmoScaleTopLeft,
     kGizmoScaleTopCenter,
@@ -1392,8 +1386,6 @@ private:
 
   Folder* folder_;
 
-  int operation_stack_;
-
   bool cache_result_;
 
   QMap<InputElementPair, ValueHint> value_hints_;
@@ -1406,6 +1398,10 @@ private:
 
   QString effect_input_;
 
+  FrameHashCache *video_cache_;
+
+  AudioPlaybackCache *audio_cache_;
+
 private slots:
   /**
    * @brief Slot when a keyframe's time changes to keep the keyframes correctly sorted by time