Linux: Add an evdev based controller backend, to replace SDL.

Source/Core/InputCommon/ControllerInterface/evdev/evdev.h

@@ -0,0 +1,86 @@
+// Copyright 2015 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <string>
+#include <vector>
+#include <libevdev/libevdev.h>
+
+#include "InputCommon/ControllerInterface/Device.h"
+
+namespace ciface
+{
+namespace evdev
+{
+
+void Init(std::vector<Core::Device*>& devices);
+
+class evdevDevice : public Core::Device
+{
+private:
+	class Button : public Core::Device::Input
+	{
+	public:
+		std::string GetName() const override;
+		Button(u8 index, u16 code, libevdev* dev) : m_index(index), m_code(code), m_dev(dev) {}
+		ControlState GetState() const override;
+	private:
+		const u8 m_index;
+		const u16 m_code;
+		libevdev* m_dev;
+	};
+
+	class Axis : public Core::Device::Input
+	{
+	public:
+		std::string GetName() const override;
+		Axis(u8 index, u16 code, bool upper, libevdev* dev);
+		ControlState GetState() const override;
+	private:
+		const u16 m_code;
+		const u8 m_index;
+		const bool m_upper;
+		int m_range;
+		libevdev* m_dev;
+	};
+
+	class ForceFeedback : public Core::Device::Output
+	{
+	public:
+		std::string GetName() const override;
+		ForceFeedback(u16 type, libevdev* dev) : m_type(type), m_dev(dev), m_id(-1) { m_fd = libevdev_get_fd(dev); }
+		void SetState(ControlState state) override;
+	private:
+		const u16 m_type;
+		libevdev* m_dev;
+		int m_fd;
+		int m_id;
+	};
+
+public:
+	void UpdateInput() override;
+
+	evdevDevice(const std::string &devnode, int id);
+	~evdevDevice();
+
+	std::string GetName() const override { return m_name; }
+	int GetId() const override { return m_id; }
+	std::string GetSource() const override { return "evdev"; }
+
+	bool IsInteresting() const { return m_initialized && m_interesting; }
+
+private:
+	const std::string m_devfile;
+	int m_fd;
+	libevdev* m_dev;
+	std::string m_name;
+	const int m_id;
+	bool m_initialized;
+	bool m_interesting;
+};
+
+}
+
+}