cache: reimplemented disk manager to enforce limit in preferences

app/render/framehashcache.h

@@ -35,10 +35,7 @@ class FrameHashCache : public PlaybackCache
 {
   Q_OBJECT
 public:
-  FrameHashCache(QObject* parent = nullptr) :
-    PlaybackCache(parent)
-  {
-  }
+  FrameHashCache(QObject* parent = nullptr);
 
   QByteArray GetHash(const rational& time);
 
@@ -82,8 +79,6 @@ public slots:
 protected:
   virtual void LengthChangedEvent(const rational& old, const rational& newlen) override;
 
-  virtual void InvalidateEvent(const TimeRange& range) override;
-
   virtual void ShiftEvent(const rational& from, const rational& to) override;
 
 private:
@@ -91,6 +86,9 @@ private:
 
   rational timebase_;
 
+private slots:
+  void HashDeleted(const QByteArray& hash);
+
 };
 
 OLIVE_NAMESPACE_EXIT