Implement proper microphone support (#251)

src/audio/CubebInputAPI.h

@@ -0,0 +1,52 @@
+#pragma once
+
+#include "IAudioInputAPI.h"
+
+#include <cubeb/cubeb.h>
+
+class CubebInputAPI : public IAudioInputAPI
+{
+public:
+	class CubebDeviceDescription : public DeviceDescription
+	{
+	public:
+		CubebDeviceDescription(cubeb_devid devid, std::string device_id, const std::wstring& name)
+			: DeviceDescription(name), m_devid(devid), m_device_id(std::move(device_id)) { }
+
+		std::wstring GetIdentifier() const override { return  boost::nowide::widen(m_device_id); }
+		cubeb_devid GetDeviceId() const { return m_devid; }
+
+	private:
+		cubeb_devid m_devid;
+		std::string m_device_id;
+	};
+
+	using CubebDeviceDescriptionPtr = std::shared_ptr<CubebDeviceDescription>;
+
+	CubebInputAPI(cubeb_devid devid, uint32 samplerate, uint32 channels, uint32 samples_per_block, uint32 bits_per_sample);
+	~CubebInputAPI();
+
+	AudioInputAPI GetType() const override { return Cubeb; }
+
+	bool ConsumeBlock(sint16* data) override;
+	bool Play() override;
+	bool Stop() override;
+	bool IsPlaying() const override { return m_is_playing;  };
+	void SetVolume(sint32 volume) override;
+
+	static std::vector<DeviceDescriptionPtr> GetDevices();
+
+	static bool InitializeStatic();
+	static void Destroy();
+
+private:
+	inline static bool s_com_initialized = false;
+	inline static cubeb* s_context = nullptr;
+
+	cubeb_stream* m_stream = nullptr;
+	bool m_is_playing = false;
+
+	mutable std::shared_mutex m_mutex;
+	std::vector<uint8> m_buffer;
+	static long data_cb(cubeb_stream* stream, void* user, const void* inputbuffer, void* outputbuffer, long nframes);
+};