Adding audio interface part 1

include/audio/libretro_audio_device.hpp

@@ -0,0 +1,33 @@
+#pragma once
+#include <atomic>
+#include <string>
+#include <vector>
+
+#include "audio/audio_device.hpp"
+
+class LibretroAudioDevice : public AudioDeviceInterface {
+	bool initialized = false;
+
+  public:
+	LibretroAudioDevice(const AudioDeviceConfig& audioSettings) : AudioDeviceInterface(nullptr, audioSettings), initialized(false) {
+		running = false;
+	}
+
+	void init(Samples& samples, bool safe = false) override {
+		this->samples = &samples;
+
+		initialized = true;
+		running = false;
+	}
+
+	void close() override {
+		initialized = false;
+		running = false;
+	};
+
+	void start() override { running = true; }
+	void stop() override { running = false; };
+
+	bool isInitialized() const { return initialized; }
+	bool isRunning() const { return running; }
+};