First commit.

include/ehs/io/audio/AudioDevice_ALSA.h

@@ -0,0 +1,46 @@
+#pragma once
+
+#include "ehs/EHS.h"
+#include "BaseAudioDevice.h"
+
+#include <alsa/asoundlib.h>
+
+namespace ehs
+{
+	class AudioDevice : public BaseAudioDevice
+	{
+	private:
+		snd_pcm_t* hdl;
+
+	public:
+		~AudioDevice() override;
+
+		AudioDevice();
+
+		AudioDevice(AudioDevice&& device) noexcept;
+
+		AudioDevice(const AudioDevice& device);
+
+		AudioDevice& operator=(AudioDevice&& device) noexcept;
+
+		AudioDevice& operator=(const AudioDevice& device);
+
+		void Release() override;
+
+		void OpenStream() override;
+
+		void CloseStream() override;
+
+		UInt_64 GetAvailFrames() const override;
+
+		Byte* Map(UInt_64* offset, UInt_64* frames) override;
+
+		void UnMap(const UInt_64 offset, const UInt_64 frames) override;
+
+		bool IsValid() const override;
+
+		static AudioDevice GetDefault(const AudioDeviceType type);
+
+		static Array<AudioDevice> Get(const AudioDeviceType type, const AudioDeviceState state);
+	};
+}