Add all the files

src/audio/XAudio2API.h

@@ -0,0 +1,74 @@
+#pragma once
+
+#define DIRECTSOUND_VERSION 0x0800
+#include <mmsystem.h>
+#include <mmreg.h>
+#include <dsound.h>
+
+#include "IAudioAPI.h"
+
+struct IXAudio2;
+struct IXAudio2Voice;
+struct IXAudio2MasteringVoice;
+struct IXAudio2SourceVoice;
+
+class XAudio2API : public IAudioAPI
+{
+public:
+	class XAudio2DeviceDescription : public DeviceDescription
+	{
+	public:
+		XAudio2DeviceDescription(const std::wstring& name, std::wstring device_id)
+			: DeviceDescription(name), m_device_id(std::move(device_id)) { }
+
+		std::wstring GetIdentifier() const override { return m_device_id.empty() ? L"default" : m_device_id; }
+		const std::wstring& GetDeviceId() const { return m_device_id; }
+
+	private:
+		std::wstring m_device_id;
+	};
+
+	using XAudio2DeviceDescriptionPtr = std::shared_ptr<XAudio2DeviceDescription>;
+
+	AudioAPI GetType() const override { return XAudio27; }
+
+	XAudio2API(std::wstring device_id, uint32 samplerate, uint32 channels, uint32 samples_per_block, uint32 bits_per_sample);
+	~XAudio2API();
+	void SetVolume(sint32 volume) override;
+
+	bool Play() override;
+	bool Stop() override;
+	bool FeedBlock(sint16* data) override;
+	bool NeedAdditionalBlocks() const override;
+
+	static bool InitializeStatic();
+	static void Destroy();
+	static const std::vector<DeviceDescriptionPtr>& GetDevices() { return s_devices;	}
+
+private:
+	static const std::vector<DeviceDescriptionPtr>& RefreshDevices();
+
+	struct XAudioDeleter
+	{
+		void operator()(IXAudio2* ptr) const;
+	};
+
+	struct VoiceDeleter
+	{
+		void operator()(IXAudio2Voice* ptr) const;
+	};
+
+	static HMODULE s_xaudio_dll;
+	static bool s_com_initialized;
+	static std::vector<DeviceDescriptionPtr> s_devices;
+
+	std::unique_ptr<IXAudio2, XAudioDeleter> m_xaudio;
+	std::wstring m_device_id;
+	std::unique_ptr<IXAudio2MasteringVoice, VoiceDeleter> m_mastering_voice;
+	std::unique_ptr<IXAudio2SourceVoice, VoiceDeleter> m_source_voice;
+
+	std::unique_ptr<uint8[]> m_audio_buffer[kBlockCount];
+	DWORD m_sound_buffer_size = 0;
+	uint32_t m_offset = 0;
+	uint32_t m_blocks_queued = 0;
+};