BladeRF output: fixed audio input

plugins/samplesink/bladerfoutput/bladerfoutputgui.cpp

@@ -314,13 +314,13 @@ void BladerfOutputGui::on_startStop_toggled(bool checked)
         if (m_deviceAPI->initGeneration())
         {
             m_deviceAPI->startGeneration();
-            DSPEngine::instance()->startAudioOutput();
+            DSPEngine::instance()->startAudioInput();
         }
     }
     else
     {
         m_deviceAPI->stopGeneration();
-        DSPEngine::instance()->stopAudioOutput();
+        DSPEngine::instance()->stopAudioInput();
     }
 }