path: root/test-input.c

/* See LICENSE file for copyright and license details. */
#include "libgamepad.h"

#include <assert.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>

#define GRAB_DEVICE 0


static struct libgamepad_device gamepad;


static void
sigint_handler(int signo)
{
	(void) signo;

#if GRAB_DEVICE
	if (libgamepad_ungrab(&gamepad))
		perror("libgamepad_ungrab");
#endif

	libgamepad_close_device(&gamepad);
	exit(0);
}


int
main(int argc, char *argv[])
{
	struct libgamepad_input_event event;
	int r;

	if (argc != 2) {
		fprintf(stderr, "Please provide the path to the subdevice as the only command line argument\n");
		return 1;
	}

	if (libgamepad_open_device(&gamepad, AT_FDCWD, argv[1], O_RDONLY)) {
		perror("libgamepad_open_device");
		return 1;
	}

#if GRAB_DEVICE
	if (libgamepad_grab(&gamepad))
		perror("libgamepad_grab");
#endif

	if (signal(SIGINT, sigint_handler) == SIG_ERR) {
		perror("signal");
		return 1;
	}

	for (;;) {
		r = libgamepad_next_event(&gamepad, &event);
		if (r <= 0) {
			if (!r || errno == EINTR)
				continue;
			perror("libgamepad_next_event");
			return 1;
		}
		printf("[%lli.%06li] ", (long long int)event.time.tv_sec, event.time.tv_usec);
		if (event.sync_event)
			printf("[sync] ");
		if (event.type == LIBGAMEPAD_BUTTON) {
			printf("%s ", libgamepad_get_button_name(NULL, event.code));
		} else if (event.type == LIBGAMEPAD_ABSOLUTE_AXIS) {
			printf("%s ", libgamepad_get_absolute_axis_name(NULL, event.code));
		} else {
			assert(event.type == LIBGAMEPAD_RELATIVE_AXIS);
			printf("%s ", libgamepad_get_relative_axis_name(NULL, event.code));
		}
		printf("%lli\n", (long long int)event.value);
	}
}