/*
 * Copyright © 2012 Intel Corporation
 *
 * Permission to use, copy, modify, distribute, and sell this software and
 * its documentation for any purpose is hereby granted without fee, provided
 * that the above copyright notice appear in all copies and that both that
 * copyright notice and this permission notice appear in supporting
 * documentation, and that the name of the copyright holders not be used in
 * advertising or publicity pertaining to distribution of the software
 * without specific, written prior permission.  The copyright holders make
 * no representations about the suitability of this software for any
 * purpose.  It is provided "as is" without express or implied warranty.
 *
 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
 * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
 * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
 * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
 * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
 * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#ifndef EVDEV_PRIVATE_H
#define EVDEV_PRIVATE_H

#include <linux/input.h>
#include <wayland-util.h>

struct evdev_seat {
	struct weston_seat base;
	struct wl_list devices_list;
	struct udev_monitor *udev_monitor;
	struct wl_event_source *udev_monitor_source;
	char *seat_id;
};

#define MAX_SLOTS 16

struct evdev_input_device {
	struct evdev_seat *master;
	struct wl_list link;
	struct wl_event_source *source;
	struct weston_output *output;
	struct evdev_dispatch *dispatch;
	char *devnode;
	int fd;
	struct {
		int min_x, max_x, min_y, max_y;
		int old_x, old_y, reset_x, reset_y;
		int32_t x, y;
	} abs;

	struct {
		int slot;
		int32_t x[MAX_SLOTS];
		int32_t y[MAX_SLOTS];
	} mt;
	struct mtdev *mtdev;

	struct {
		wl_fixed_t dx, dy;
	} rel;

	int type; /* event type flags */

	int is_touchpad, is_mt;
};

/* event type flags */
#define EVDEV_ABSOLUTE_MOTION		(1 << 0)
#define EVDEV_ABSOLUTE_MT_DOWN		(1 << 1)
#define EVDEV_ABSOLUTE_MT_MOTION	(1 << 2)
#define EVDEV_ABSOLUTE_MT_UP		(1 << 3)
#define EVDEV_RELATIVE_MOTION		(1 << 4)

/* copied from udev/extras/input_id/input_id.c */
/* we must use this kernel-compatible implementation */
#define BITS_PER_LONG (sizeof(unsigned long) * 8)
#define NBITS(x) ((((x)-1)/BITS_PER_LONG)+1)
#define OFF(x)  ((x)%BITS_PER_LONG)
#define BIT(x)  (1UL<<OFF(x))
#define LONG(x) ((x)/BITS_PER_LONG)
#define TEST_BIT(array, bit)    ((array[LONG(bit)] >> OFF(bit)) & 1)
/* end copied */

struct evdev_dispatch;

struct evdev_dispatch_interface {
	/* Process an evdev input event. */
	void (*process)(struct evdev_dispatch *dispatch,
			struct evdev_input_device *device,
			struct input_event *event,
			uint32_t time);

	/* Destroy an event dispatch handler and free all its resources. */
	void (*destroy)(struct evdev_dispatch *dispatch);
};

struct evdev_dispatch {
	struct evdev_dispatch_interface *interface;
};

#endif /* EVDEV_PRIVATE_H */