diff transform/ModelTransformer.h @ 911:73c2fd9a7dbe

Merge from branch tony_integration

--- a/transform/ModelTransformer.h	Wed May 07 15:17:58 2014 +0100
+++ b/transform/ModelTransformer.h	Wed May 14 09:54:20 2014 +0100
@@ -40,6 +40,8 @@
 public:
     virtual ~ModelTransformer();
 
+    typedef std::vector<Model *> Models;
+
     class Input {
     public:
         Input(Model *m) : m_model(m), m_channel(-1) { }
@@ -76,18 +78,47 @@
     int getInputChannel() { return m_input.getChannel(); }
 
     /**
-     * Return the output model created by the transform.  Returns a
-     * null model if the transform could not be initialised; an error
-     * message may be available via getMessage() in this situation.
+     * Return the set of output models created by the transform or
+     * transforms.  Returns an empty list if any transform could not
+     * be initialised; an error message may be available via
+     * getMessage() in this situation.
      */
-    Model *getOutputModel() { return m_output; }
+    Models getOutputModels() { return m_outputs; }
 
     /**
-     * Return the output model, also detaching it from the transformer
-     * so that it will not be deleted when the transformer is.  The
-     * caller takes ownership of the model.
+     * Return the set of output models, also detaching them from the
+     * transformer so that they will not be deleted when the
+     * transformer is.  The caller takes ownership of the models.
      */
-    Model *detachOutputModel() { m_detached = true; return m_output; }
+    Models detachOutputModels() { 
+        m_detached = true; 
+        return getOutputModels(); 
+    }
+
+    /**
+     * Return any additional models that were created during
+     * processing. This might happen if, for example, a transform was
+     * configured to split a multi-bin output into separate single-bin
+     * models as it processed. These should not be queried until after
+     * the transform has completed.
+     */
+    virtual Models getAdditionalOutputModels() { return Models(); }
+
+    /**
+     * Return true if the current transform is one that may produce
+     * additional models (to be retrieved through
+     * getAdditionalOutputModels above).
+     */
+    virtual bool willHaveAdditionalOutputModels() { return false; }
+
+    /**
+     * Return the set of additional models, also detaching them from
+     * the transformer.  The caller takes ownership of the models.
+     */
+    virtual Models detachAdditionalOutputModels() { 
+        m_detachedAdd = true;
+        return getAdditionalOutputModels();
+    }
 
     /**
      * Return a warning or error message.  If getOutputModel returned
@@ -99,11 +130,13 @@
 
 protected:
     ModelTransformer(Input input, const Transform &transform);
+    ModelTransformer(Input input, const Transforms &transforms);
 
-    Transform m_transform;
+    Transforms m_transforms;
     Input m_input; // I don't own the model in this
-    Model *m_output; // I own this, unless...
+    Models m_outputs; // I own this, unless...
     bool m_detached; // ... this is true.
+    bool m_detachedAdd;
     bool m_abandoned;
     QString m_message;
 };