godot/platform/x11/joystick_linux.h

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/*  joystick_linux.h                                                     */
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//author: Andreas Haas <hondres,  liugam3@gmail.com>
#ifndef JOYSTICK_LINUX_H
#define JOYSTICK_LINUX_H
#ifdef JOYDEV_ENABLED
#include "main/input_default.h"
#include "os/thread.h"
#include "os/mutex.h"

struct input_absinfo;

class joystick_linux
{
public:
	joystick_linux(InputDefault *in);
	~joystick_linux();
	uint32_t process_joysticks(uint32_t p_event_id);
private:

	enum {
		JOYSTICKS_MAX = 16,
		MAX_ABS = 63,
		MAX_KEY = 767,   // Hack because <linux/input.h> can't be included here
		BT_MISC = 256,
		HAT_MAX = 4,
	};

	struct Joystick {
		int key_map[MAX_KEY - BT_MISC];
		int abs_map[MAX_ABS];
		int num_buttons;
		int num_axes;
		int dpad;
		int fd;

		String devpath;
		struct libevdev *dev;

		Joystick();
		void reset();
	};

	bool exit_udev;
	Mutex *joy_mutex;
	Thread *joy_thread;
	InputDefault *input;
	Joystick joysticks[JOYSTICKS_MAX];

	static void joy_thread_func(void *p_user);

	int get_joy_from_path(String path) const;
	int get_free_joy_slot() const;

	void setup_joystick_properties(int p_id);
	void close_joystick(int p_id = -1);
	void enumerate_joysticks(struct udev *_udev);
	void monitor_joysticks(struct udev *_udev);
	void run_joystick_thread();
	void open_joystick(const char* path);

	InputDefault::JoyAxis axis_correct(const input_absinfo *abs, int value) const;
};

#endif
#endif // JOYSTICK_LINUX_H