1 files changed, 3 insertions, 0 deletions
diff --git a/src/audio/include/audio_element.hpp b/src/audio/include/audio_element.hpp
index 133a6ae7..7e3d9d7d 100644
--- a/src/audio/include/audio_element.hpp
+++ b/src/audio/include/audio_element.hpp
@@ -10,6 +10,7 @@
 #include <cstdint>
 #include <deque>
 #include <memory>
+#include <vector>
 
 #include "freertos/FreeRTOS.h"
 
@@ -46,6 +47,8 @@ class IAudioElement {
   IAudioElement() {}
   virtual ~IAudioElement() {}
 
+  virtual auto NeedsToProcess() const -> bool = 0;
+
   virtual auto Process(const std::vector<InputStream>& inputs,
                        OutputStream* output) -> void = 0;
 };