comparison layer/WaveformLayer.cpp @ 69:6dad2724f3aa

* Ensure plugin parameters for a transform are saved in the .sv file and
  restored in case the plugin has to be run again
* Make plugin dialog offer options for mixdown/single-channel use if the
  file has more than one channels but the plugin only accepts one
* Fix incorrect samplerate playback for second file loaded if its samplerate
  differed from first
* Add Zoom to Fit and Select Visible Range menu options, split out Import
  Audio into main model and secondary model options
* Add stubs for cut, copy and paste operations (not implemented yet)

 }
 
 void
 WaveformLayer::setModel(const RangeSummarisableTimeValueModel *model)
 {
+    bool channelsChanged = false;
+    if (m_channel == -1) {
+        if (!m_model) {
+            if (model) {
+                channelsChanged = true;
+            }
+        } else {
+            if (model &&
+                m_model->getChannelCount() != model->getChannelCount()) {
+                channelsChanged = true;
+            }
+        }
+    }
+
     m_model = model;
     m_cacheValid = false;
     if (!m_model || !m_model->isOK()) return;
 
     connect(m_model, SIGNAL(modelChanged()), this, SIGNAL(modelChanged()));

 
     connect(m_model, SIGNAL(completionChanged()),
 	    this, SIGNAL(modelCompletionChanged()));
 
     emit modelReplaced();
+
+    if (channelsChanged) emit layerParametersChanged();
 }
 
 Layer::PropertyList
 WaveformLayer::getProperties() const
 {