cache: save states to disk

app/node/block/clip/clip.cpp

@@ -311,4 +311,23 @@ void ClipBlock::Retranslate()
   SetInputName(kMaintainAudioPitchInput, tr("Maintain Audio Pitch"));
 }
 
+void ClipBlock::ConnectedToPreviewEvent()
+{
+  Track::Type type = GetTrackType();
+
+  if (type == Track::kVideo || type == Track::kAudio) {
+    if (Node *connected = GetConnectedOutput(kBufferIn)) {
+      TimeRange max_range = InputTimeAdjustment(kBufferIn, -1, TimeRange(0, length()));
+      if (type == Track::kVideo) {
+        TimeRangeList invalid = connected->thumbnail_cache()->GetInvalidatedRanges(max_range);
+        for (const TimeRange &r : invalid) {
+          emit connected->thumbnail_cache()->Request(r, PlaybackCache::kPreviewsOnly);
+        }
+      } else if (type == Track::kAudio) {
+        //emit connected->audio_playback_cache()->Request(range.Intersected(max_range), PlaybackCache::kPreviewsOnly);
+      }
+    }
+  }
+}
+
 }

app/node/block/clip/clip.h

@@ -158,6 +158,8 @@ public:
     return TimeRange(0, length());
   }
 
+  virtual void ConnectedToPreviewEvent() override;
+
   static const QString kBufferIn;
   static const QString kMediaInInput;
   static const QString kSpeedInput;

app/node/node.h

@@ -991,6 +991,7 @@ public:
   void SetInputFlags(const QString &input, const InputFlags &f);
 
   virtual void LoadFinishedEvent(){}
+  virtual void ConnectedToPreviewEvent(){}
 
   static void SetValueAtTime(const NodeInput &input, const rational &time, const QVariant &value, int track, MultiUndoCommand *command, bool insert_on_all_tracks_if_no_key);
 

app/node/project/serializer/serializer220403.cpp

@@ -544,6 +544,18 @@ void ProjectSerializer220403::LoadNode(Node *node, XMLNodeData &xml_node_data, Q
           reader->skipCurrentElement();
         }
       }
+    } else if (reader->name() == QStringLiteral("caches")) {
+      while (XMLReadNextStartElement(reader)) {
+        if (reader->name() == QStringLiteral("audio")) {
+          node->audio_playback_cache()->SetUuid(reader->readElementText());
+        } else if (reader->name() == QStringLiteral("video")) {
+          node->video_frame_cache()->SetUuid(reader->readElementText());
+        } else if (reader->name() == QStringLiteral("thumb")) {
+          node->thumbnail_cache()->SetUuid(reader->readElementText());
+        } else {
+          reader->skipCurrentElement();
+        }
+      }
     } else {
       reader->skipCurrentElement();
     }
@@ -599,6 +611,14 @@ void ProjectSerializer220403::SaveNode(Node *node, QXmlStreamWriter *writer) con
   }
   writer->writeEndElement();
 
+  writer->writeStartElement(QStringLiteral("caches"));
+
+  writer->writeTextElement(QStringLiteral("audio"), node->audio_playback_cache()->GetUuid().toString());
+  writer->writeTextElement(QStringLiteral("video"), node->video_frame_cache()->GetUuid().toString());
+  writer->writeTextElement(QStringLiteral("thumb"), node->thumbnail_cache()->GetUuid().toString());
+
+  writer->writeEndElement(); // caches
+
   writer->writeStartElement(QStringLiteral("custom"));
 
   SaveNodeCustom(writer, node);