Implemented Buzzer

Buzzer.hpp

@@ -0,0 +1,24 @@
+#pragma once
+
+#include <vector>
+#include <SDL2/SDL_audio.h>
+
+class Buzzer {
+public:
+  using sample_t = Sint16;
+
+  Buzzer(unsigned frequency);
+  ~Buzzer();
+
+  void on();
+  void off();
+
+private:
+  static void SDLCALL audioCallback(void *userdata, Uint8 *stream, int len);
+  void copySamples(Uint8 *stream, int len);
+
+private:
+  std::vector<sample_t> mSamples;
+  SDL_AudioDeviceID mAudioDevice;
+  size_t miCurrentSample;
+};