added a getMedia in the Generic and Clip renderers

this method will return a NULL pointer in the GenericRenderer class

src/Renderer/ClipRenderer.cpp

@@ -215,6 +215,11 @@ float       ClipRenderer::getFps() const
     return 0.0f;
 }
 
+Media*      ClipRenderer::getMedia() const
+{
+    return m_selectedMedia;
+}
+
 void        ClipRenderer::previewWidgetCursorChanged( qint64 newFrame )
 {
     if ( m_isRendering == true )

src/Renderer/ClipRenderer.h

@@ -46,6 +46,7 @@ public:
     virtual qint64          getLengthMs() const;
     virtual qint64          getCurrentFrame() const;
     virtual float           getFps() const;
+    virtual Media*          getMedia() const;
 
 private:
     void                    startPreview();

src/Renderer/GenericRenderer.h

@@ -89,6 +89,11 @@ public:
      */
     virtual float                   getFps() const = 0;
 
+    virtual Media*                  getMedia() const
+    {
+        return 0;
+    }
+
     /**
      * \brief Return the length in frames
      * \warning The returned value may not be accurate