separated setting time and processing node functions

app/node/block/block.cpp

@@ -70,7 +70,7 @@ void Block::set_length(const rational &length)
 
 Block *Block::previous()
 {
-  return ValueToPtr<Block>(previous_input_->get_value(0));
+  return ValueToPtr<Block>(previous_input_->get_value());
 }
 
 Block *Block::next()
@@ -83,10 +83,8 @@ NodeInput *Block::previous_input()
   return previous_input_;
 }
 
-void Block::Process(const rational &time)
+void Block::Process()
 {
-  Q_UNUSED(time)
-
   // Simply set both output values as a pointer to this object
   block_output_->set_value(PtrToValue(this));
 }

app/node/block/block.h

@@ -102,7 +102,7 @@ signals:
   void Refreshed();
 
 protected:
-  virtual void Process(const rational &time) override;
+  virtual void Process() override;
 
 private:  
   NodeInput* previous_input_;

app/node/block/clip/clip.cpp

@@ -20,6 +20,8 @@
 
 #include "clip.h"
 
+#include "node/processor/renderer/renderer.h"
+
 ClipBlock::ClipBlock()
 {
   texture_input_ = new NodeInput("tex_in");
@@ -65,17 +67,31 @@ NodeInput *ClipBlock::texture_input()
   return texture_input_;
 }
 
-void ClipBlock::Process(const rational &time)
+void ClipBlock::set_time(const rational &time)
 {
-  // Run default node processing
-  Block::Process(time);
+  Node::set_time(time);
 
-  // If the time retrieved is within this block, get texture information
-  if (time >= in() && time < out()) {
+  if (texture_input_->IsConnected()) {
     // We convert the time given (timeline time) to media time
     rational media_time = time - in() + media_in();
 
-    // Retrieve texture
-    texture_output()->set_value(texture_input_->get_value(media_time));
+    texture_input_->edges().first()->output()->parent()->set_time(media_time);
+  }
+}
+
+void ClipBlock::Process()
+{
+  // Run default node processing
+  Block::Process();
+
+  // Check if we have a renderer instance
+  if (RendererProcessor::CurrentInstance() != nullptr) {
+    // If the time retrieved is within this block, get texture information
+    if (time() >= in() && time() < out()) {
+      // Retrieve texture
+      texture_output()->set_value(texture_input_->get_value());
+    } else {
+      texture_output()->set_value(0);
+    }
   }
 }

app/node/block/clip/clip.h

@@ -42,8 +42,10 @@ public:
 
   NodeInput* texture_input();
 
+  virtual void set_time(const rational& time) override;
+
 protected:
-  virtual void Process(const rational &time) override;
+  virtual void Process() override;
 
 private:
   NodeInput* texture_input_;