ensure frame rate and sample rate changes ripple through widgets

app/node/output/viewer/viewer.cpp

@@ -431,10 +431,20 @@ void ViewerOutput::InputValueChangedEvent(const QString &input, int element)
 
     } else if (input == kAudioParamsInput) {
 
+      AudioParams new_audio_params = GetAudioParams();
+
+      bool sample_rate_changed = new_audio_params.sample_rate() != cached_audio_params_.sample_rate();
+
+      if (sample_rate_changed) {
+        emit SampleRateChanged(new_audio_params.sample_rate());
+      }
+
       emit AudioParamsChanged();
 
       audio_playback_cache_.SetParameters(GetAudioParams());
 
+      cached_audio_params_ = new_audio_params;
+
     }
   }
 

app/node/output/viewer/viewer.h

@@ -167,6 +167,8 @@ signals:
 
   void TextureInputChanged();
 
+  void SampleRateChanged(int sr);
+
 public slots:
   void VerifyLength();
 
@@ -200,6 +202,8 @@ private:
 
   VideoParams cached_video_params_;
 
+  AudioParams cached_audio_params_;
+
   TimelinePoints timeline_points_;
 
 private slots: