#pragma once #include "fl/unused.h" #include "fl/audio_input.h" namespace fl { class Null_Audio : public IAudioInput { public: ~Null_Audio() = default; // Starts the audio source. void start() override {} // Stops the audio source, call this before light sleep. void stop() override {} bool error(fl::string* msg = nullptr) override { if (msg) { *msg = "No audio device available: this is a null device."; } return true; } // Read audio data and return as AudioSample with calculated timestamp. // Returns invalid AudioSample on error or when no data is available. AudioSample read() override { return AudioSample(); // Always return invalid sample } }; } // namespace fl